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freebsd-skq/sys/dev/re/if_re.c

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Start each of the license/copyright comments with /*-, minor shuffle of lines
2005-01-06 01:43:34 +00:00
/*-
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
* Copyright (c) 1997, 1998-2003
* Bill Paul <wpaul@windriver.com>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
Remove duplicate FBSDID's, move others to their right place.
2003-11-14 17:16:58 +00:00
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
* RealTek 8139C+/8169/8169S/8110S/8168/8111/8101E PCI NIC driver
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
*
* Written by Bill Paul <wpaul@windriver.com>
* Senior Networking Software Engineer
* Wind River Systems
*/
/*
* This driver is designed to support RealTek's next generation of
* 10/100 and 10/100/1000 PCI ethernet controllers. There are currently
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
* seven devices in this family: the RTL8139C+, the RTL8169, the RTL8169S,
* RTL8110S, the RTL8168, the RTL8111 and the RTL8101E.
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
*
* The 8139C+ is a 10/100 ethernet chip. It is backwards compatible
* with the older 8139 family, however it also supports a special
* C+ mode of operation that provides several new performance enhancing
* features. These include:
*
* o Descriptor based DMA mechanism. Each descriptor represents
* a single packet fragment. Data buffers may be aligned on
* any byte boundary.
*
* o 64-bit DMA
*
* o TCP/IP checksum offload for both RX and TX
*
* o High and normal priority transmit DMA rings
*
* o VLAN tag insertion and extraction
*
* o TCP large send (segmentation offload)
*
* Like the 8139, the 8139C+ also has a built-in 10/100 PHY. The C+
* programming API is fairly straightforward. The RX filtering, EEPROM
* access and PHY access is the same as it is on the older 8139 series
* chips.
*
* The 8169 is a 64-bit 10/100/1000 gigabit ethernet MAC. It has almost the
* same programming API and feature set as the 8139C+ with the following
* differences and additions:
*
* o 1000Mbps mode
*
* o Jumbo frames
*
Whitespace pass
2004-07-06 02:46:53 +00:00
* o GMII and TBI ports/registers for interfacing with copper
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
* or fiber PHYs
*
Whitespace pass
2004-07-06 02:46:53 +00:00
* o RX and TX DMA rings can have up to 1024 descriptors
* (the 8139C+ allows a maximum of 64)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
*
* o Slight differences in register layout from the 8139C+
*
* The TX start and timer interrupt registers are at different locations
* on the 8169 than they are on the 8139C+. Also, the status word in the
* RX descriptor has a slightly different bit layout. The 8169 does not
* have a built-in PHY. Most reference boards use a Marvell 88E1000 'Alaska'
* copper gigE PHY.
*
* The 8169S/8110S 10/100/1000 devices have built-in copper gigE PHYs
* (the 'S' stands for 'single-chip'). These devices have the same
* programming API as the older 8169, but also have some vendor-specific
* registers for the on-board PHY. The 8110S is a LAN-on-motherboard
* part designed to be pin-compatible with the RealTek 8100 10/100 chip.
Whitespace pass
2004-07-06 02:46:53 +00:00
*
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
* This driver takes advantage of the RX and TX checksum offload and
* VLAN tag insertion/extraction features. It also implements TX
* interrupt moderation using the timer interrupt registers, which
* significantly reduces TX interrupt load. There is also support
* for jumbo frames, however the 8169/8169S/8110S can not transmit
fix jumbo frames as much as they can be fixed for re. We now cap the MTU to 7422 since it appears that the 8169S can't transmit anything larger.. The 8169S can receive full jumbo frames, but we don't have an mru to let the upper layers know this... add fixup so that this driver should work on alignment constrained platforms (!i386 && !amd64) MFC after: 5 days
2004-09-28 18:22:24 +00:00
* jumbo frames larger than 7440, so the max MTU possible with this
* driver is 7422 bytes.
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
*/
- Don't pollute opt_global.h with DEVICE_POLLING and introduce opt_device_polling.h - Include opt_device_polling.h into appropriate files. - Embrace with HAVE_KERNEL_OPTION_HEADERS the include in the files that can be compiled as loadable modules. Reviewed by: bde
2005-10-05 10:09:17 +00:00
#ifdef HAVE_KERNEL_OPTION_HEADERS
#include "opt_device_polling.h"
#endif
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
#include <sys/param.h>
#include <sys/endian.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
Add missing <sys/module.h> includes
2004-05-30 20:08:47 +00:00
#include <sys/module.h>
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
#include <sys/kernel.h>
#include <sys/socket.h>
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/taskqueue.h>
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
Stop embedding struct ifnet at the top of driver softcs. Instead the struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam
2005-06-10 16:49:24 +00:00
#include <net/if_types.h>
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
#include <net/if_vlan_var.h>
#include <net/bpf.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
#include <pci/if_rlreg.h>
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
MODULE_DEPEND(re, pci, 1, 1, 1);
MODULE_DEPEND(re, ether, 1, 1, 1);
MODULE_DEPEND(re, miibus, 1, 1, 1);
The controller -> device switch happened in 4.0, fix comment
2005-10-22 05:01:11 +00:00
/* "device miibus" required. See GENERIC if you get errors here. */
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
#include "miibus_if.h"
/*
* Default to using PIO access for this driver.
*/
#define RE_USEIOSPACE
Add MSI support. Ever since switching to adaptive polling re(4) occasionally spews watchdog timeouts on systems with MSI capability. This change is minimal one for supporting MSI and re(4) also needs MSIX support for RTL8111C in future. Because softc structure of re(4) is shared with rl(4), rl(4) was touched to use the modified softc. Reported by: cnst Tested by: cnst Approved by: re (kensmith)
2007-07-24 01:24:03 +00:00
/* Tunables. */
static int msi_disable = 0;
TUNABLE_INT("hw.re.msi_disable", &msi_disable);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
#define RE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
/*
* Various supported device vendors/types and their names.
*/
static struct rl_type re_devs[] = {
Recognize D-Link DGE-528(T) Gigabit as an re(4) device. Submitted by: Andrus Nomm <andrus@members.ee> PR: 76780 MFC After: 1 week
2005-08-05 08:19:12 +00:00
{ DLINK_VENDORID, DLINK_DEVICEID_528T, RL_HWREV_8169S,
"D-Link DGE-528(T) Gigabit Ethernet Adapter" },
Add support for D-Link DGE-528(T) Rev.B1 PR: 112774 Submitted by: Denis Fortin <fortin at acm dot org> Approved by: imp (mentor), yongari MFC After: 3 days
2007-11-12 15:44:00 +00:00
{ DLINK_VENDORID, DLINK_DEVICEID_528T, RL_HWREV_8169_8110SB,
"D-Link DGE-528(T) Rev.B1 Gigabit Ethernet Adapter" },
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
{ RT_VENDORID, RT_DEVICEID_8139, RL_HWREV_8139CPLUS,
"RealTek 8139C+ 10/100BaseTX" },
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
{ RT_VENDORID, RT_DEVICEID_8101E, RL_HWREV_8101E,
"RealTek 8101E PCIe 10/100baseTX" },
Fix the following bugs in re(4) - Correct the PCI ID for the 8169SC/8110SC in the device list (I added the macro for it to if_rlreg.h before, but forgot to use it.) - Remove the extra interrupt spinlock I added previously. After giving it some more thought, it's not really needed. - Work around a hardware bug in some versions of the 8169. When sending very small IP datagrams with checksum offload enabled, a conflict can occur between the TX autopadding feature and the hardware checksumming that can corrupt the outbound packet. This is the reason that checksum offload sometimes breaks NFS: if you're using NFS over UDP, and you're very unlucky, you might find yourself doing a fragmented NFS write where the last fragment is smaller than the minimum ethernet frame size (60 bytes). (It's rare, but if you keep NFS running long enough it'll happen.) If checksum offload is enabled, the chip will have to both autopad the fragment and calculate its checksum header. This confuses some revs of the 8169, causing the packet that appears on the wire to be corrupted. (The IP addresses and the checksum field are mangled.) This will cause the NFS write to fail. Unfortunately, when NFS retries, it sends the same write request over and over again, and it keeps failing, so NFS stays wedged. (A simple way to provoke the failure is to connect the failing system to a network with a known good machine and do "ping -s 1473 <badhost>" from the good system. The ping will fail.) Someone had previously worked around this using the heavy-handed approahch of just disabling checksum offload. The correct fix is to manually pad short frames where the TCP/IP stack has requested checksum offloading. This allows us to have checksum offload turned on by default but still let NFS work right. - Not a bug, but change the ID strings for devices with hardware rev 0x30000000 and 0x38000000 to both be 8168B/8111B. According to RealTek, they're both the same device, but 0x30000000 is an earlier silicon spin.
2006-07-30 23:25:21 +00:00
{ RT_VENDORID, RT_DEVICEID_8168, RL_HWREV_8168_SPIN1,
"RealTek 8168/8111B PCIe Gigabit Ethernet" },
{ RT_VENDORID, RT_DEVICEID_8168, RL_HWREV_8168_SPIN2,
"RealTek 8168/8111B PCIe Gigabit Ethernet" },
Add another RTL8168 revision 3 which is found on RTL8111-GR Gigabit Ethernet Controller. Multicast filtering wasn't tested and needs more expore. While I'm here change complex if statements with switch statement which would improve readability. Reported by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca > Tested by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca >
2007-12-08 00:14:09 +00:00
{ RT_VENDORID, RT_DEVICEID_8168, RL_HWREV_8168_SPIN3,
"RealTek 8168/8111B PCIe Gigabit Ethernet" },
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
{ RT_VENDORID, RT_DEVICEID_8169, RL_HWREV_8169,
"RealTek 8169 Gigabit Ethernet" },
Update hardware revision table. 0x04000000 appears to be the revision for the 8169S, according to my sample board. The RealTek Linux driver mentions 0x00800000. I'm assigning this to the 8110S until I get more info on it. (The (preliminary) RealTek docs only say that 8169S/8110S chips will have some combination of those two bits set, but doesn't say exactly what bit combination goes with which chip variant.)
2003-09-10 07:21:43 +00:00
{ RT_VENDORID, RT_DEVICEID_8169, RL_HWREV_8169S,
"RealTek 8169S Single-chip Gigabit Ethernet" },
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
{ RT_VENDORID, RT_DEVICEID_8169, RL_HWREV_8169_8110SB,
"RealTek 8169SB/8110SB Single-chip Gigabit Ethernet" },
Add support for the RTL8110SC driver. PR: 110804 Submitted by: Daan Vreeken Sponsored by: Vitsch Electronics (patch) Approved by: imp (mentor) MFC After: 3 days
2007-03-28 18:07:12 +00:00
{ RT_VENDORID, RT_DEVICEID_8169, RL_HWREV_8169_8110SC,
"RealTek 8169SC/8110SC Single-chip Gigabit Ethernet" },
Fix the following bugs in re(4) - Correct the PCI ID for the 8169SC/8110SC in the device list (I added the macro for it to if_rlreg.h before, but forgot to use it.) - Remove the extra interrupt spinlock I added previously. After giving it some more thought, it's not really needed. - Work around a hardware bug in some versions of the 8169. When sending very small IP datagrams with checksum offload enabled, a conflict can occur between the TX autopadding feature and the hardware checksumming that can corrupt the outbound packet. This is the reason that checksum offload sometimes breaks NFS: if you're using NFS over UDP, and you're very unlucky, you might find yourself doing a fragmented NFS write where the last fragment is smaller than the minimum ethernet frame size (60 bytes). (It's rare, but if you keep NFS running long enough it'll happen.) If checksum offload is enabled, the chip will have to both autopad the fragment and calculate its checksum header. This confuses some revs of the 8169, causing the packet that appears on the wire to be corrupted. (The IP addresses and the checksum field are mangled.) This will cause the NFS write to fail. Unfortunately, when NFS retries, it sends the same write request over and over again, and it keeps failing, so NFS stays wedged. (A simple way to provoke the failure is to connect the failing system to a network with a known good machine and do "ping -s 1473 <badhost>" from the good system. The ping will fail.) Someone had previously worked around this using the heavy-handed approahch of just disabling checksum offload. The correct fix is to manually pad short frames where the TCP/IP stack has requested checksum offloading. This allows us to have checksum offload turned on by default but still let NFS work right. - Not a bug, but change the ID strings for devices with hardware rev 0x30000000 and 0x38000000 to both be 8168B/8111B. According to RealTek, they're both the same device, but 0x30000000 is an earlier silicon spin.
2006-07-30 23:25:21 +00:00
{ RT_VENDORID, RT_DEVICEID_8169SC, RL_HWREV_8169_8110SC,
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
"RealTek 8169SC/8110SC Single-chip Gigabit Ethernet" },
Update hardware revision table. 0x04000000 appears to be the revision for the 8169S, according to my sample board. The RealTek Linux driver mentions 0x00800000. I'm assigning this to the 8110S until I get more info on it. (The (preliminary) RealTek docs only say that 8169S/8110S chips will have some combination of those two bits set, but doesn't say exactly what bit combination goes with which chip variant.)
2003-09-10 07:21:43 +00:00
{ RT_VENDORID, RT_DEVICEID_8169, RL_HWREV_8110S,
"RealTek 8110S Single-chip Gigabit Ethernet" },
Add support Corega CG-LAPCIGT Gigabit Ethernet(8169S) PR: [FreeBSD-users-jp 80667] Submitted by: FUJIMOTO Kou <fujimoto@j.dendai.ac.jp> MFC after: 1 week
2004-08-28 10:59:02 +00:00
{ COREGA_VENDORID, COREGA_DEVICEID_CGLAPCIGT, RL_HWREV_8169S,
"Corega CG-LAPCIGT (RTL8169S) Gigabit Ethernet" },
Only allow the sk(4) driver to attach to revision 2 of the LinkSys EG1032 cards and teach the re(4) driver to attach to revision 3 cards. Submitted by: Fredrik Lindberg fli+freebsd-current at shapeshifter dot se MFC after: 2 weeks Reviewed by: imp, mdodd
2005-10-14 18:51:30 +00:00
{ LINKSYS_VENDORID, LINKSYS_DEVICEID_EG1032, RL_HWREV_8169S,
"Linksys EG1032 (RTL8169S) Gigabit Ethernet" },
Another small update to the re(4) driver: - Change the workaround for the autopad/checksum offload bug so that instead of lying about the map size, we actually create a properly padded mbuf and map it as usual. The other trick works, but is ugly. This approach also gives us a chance to zero the pad space to avoid possibly leaking data. - With the PCIe devices, it looks issuing a TX command while there's already a transmission in progress doesn't have any effect. In other words, if you send two packets in rapid succession, the second one may end up sitting in the TX DMA ring until another transmit command is issued later in the future. Basically, if re_txeof() sees that there are still descriptors outstanding, it needs to manually resume the TX DMA channel by issuing another TX command to make sure all transmissions are flushed out. (The PCI devices seem to keep the TX channel moving until all descriptors have been consumed. I'm not sure why the PCIe devices behave differently.) (You can see this issue if you do the following test: plug an re(4) interface into another host via crossover cable, and from the other host do 'ping -c 2 <host with re(4) NIC>' to prime the ARP cache, then do 'ping -c 1 -s 1473 <host with re(4) NIC>'. You're supposed to see two packets sent in response, but you may only see one. If you do 'ping -c 1 -s 1473 <host with re(4) NIC>' again, you'll see two packets, but one will be the missing fragment from the last ping, followed by one of the fragments from this ping.) - Add the PCI ID for the US Robotics 997902 NIC, which is based on the RTL8169S. - Add a tsleep() of 1 second in re_detach() after the interrupt handler is disconnected. This should allow any tasks queued up by the ISR to drain. Now, I know you're supposed to use taskqueue_drain() for this, but something about the way taskqueue_drain() works with taskqueue_fast queues doesn't seem quite right, and I refuse to be tricked into fixing it.
2006-08-01 17:18:25 +00:00
{ USR_VENDORID, USR_DEVICEID_997902, RL_HWREV_8169S,
"US Robotics 997902 (RTL8169S) Gigabit Ethernet" },
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
{ 0, 0, 0, NULL }
};
static struct rl_hwrev re_hwrevs[] = {
{ RL_HWREV_8139, RL_8139, "" },
{ RL_HWREV_8139A, RL_8139, "A" },
{ RL_HWREV_8139AG, RL_8139, "A-G" },
{ RL_HWREV_8139B, RL_8139, "B" },
{ RL_HWREV_8130, RL_8139, "8130" },
{ RL_HWREV_8139C, RL_8139, "C" },
{ RL_HWREV_8139D, RL_8139, "8139D/8100B/8100C" },
{ RL_HWREV_8139CPLUS, RL_8139CPLUS, "C+"},
Fix the following bugs in re(4) - Correct the PCI ID for the 8169SC/8110SC in the device list (I added the macro for it to if_rlreg.h before, but forgot to use it.) - Remove the extra interrupt spinlock I added previously. After giving it some more thought, it's not really needed. - Work around a hardware bug in some versions of the 8169. When sending very small IP datagrams with checksum offload enabled, a conflict can occur between the TX autopadding feature and the hardware checksumming that can corrupt the outbound packet. This is the reason that checksum offload sometimes breaks NFS: if you're using NFS over UDP, and you're very unlucky, you might find yourself doing a fragmented NFS write where the last fragment is smaller than the minimum ethernet frame size (60 bytes). (It's rare, but if you keep NFS running long enough it'll happen.) If checksum offload is enabled, the chip will have to both autopad the fragment and calculate its checksum header. This confuses some revs of the 8169, causing the packet that appears on the wire to be corrupted. (The IP addresses and the checksum field are mangled.) This will cause the NFS write to fail. Unfortunately, when NFS retries, it sends the same write request over and over again, and it keeps failing, so NFS stays wedged. (A simple way to provoke the failure is to connect the failing system to a network with a known good machine and do "ping -s 1473 <badhost>" from the good system. The ping will fail.) Someone had previously worked around this using the heavy-handed approahch of just disabling checksum offload. The correct fix is to manually pad short frames where the TCP/IP stack has requested checksum offloading. This allows us to have checksum offload turned on by default but still let NFS work right. - Not a bug, but change the ID strings for devices with hardware rev 0x30000000 and 0x38000000 to both be 8168B/8111B. According to RealTek, they're both the same device, but 0x30000000 is an earlier silicon spin.
2006-07-30 23:25:21 +00:00
{ RL_HWREV_8168_SPIN1, RL_8169, "8168"},
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
{ RL_HWREV_8169, RL_8169, "8169"},
Update hardware revision table. 0x04000000 appears to be the revision for the 8169S, according to my sample board. The RealTek Linux driver mentions 0x00800000. I'm assigning this to the 8110S until I get more info on it. (The (preliminary) RealTek docs only say that 8169S/8110S chips will have some combination of those two bits set, but doesn't say exactly what bit combination goes with which chip variant.)
2003-09-10 07:21:43 +00:00
{ RL_HWREV_8169S, RL_8169, "8169S"},
{ RL_HWREV_8110S, RL_8169, "8110S"},
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
{ RL_HWREV_8169_8110SB, RL_8169, "8169SB"},
{ RL_HWREV_8169_8110SC, RL_8169, "8169SC"},
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
{ RL_HWREV_8100, RL_8139, "8100"},
{ RL_HWREV_8101, RL_8139, "8101"},
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
{ RL_HWREV_8100E, RL_8169, "8100E"},
{ RL_HWREV_8101E, RL_8169, "8101E"},
Fix the following bugs in re(4) - Correct the PCI ID for the 8169SC/8110SC in the device list (I added the macro for it to if_rlreg.h before, but forgot to use it.) - Remove the extra interrupt spinlock I added previously. After giving it some more thought, it's not really needed. - Work around a hardware bug in some versions of the 8169. When sending very small IP datagrams with checksum offload enabled, a conflict can occur between the TX autopadding feature and the hardware checksumming that can corrupt the outbound packet. This is the reason that checksum offload sometimes breaks NFS: if you're using NFS over UDP, and you're very unlucky, you might find yourself doing a fragmented NFS write where the last fragment is smaller than the minimum ethernet frame size (60 bytes). (It's rare, but if you keep NFS running long enough it'll happen.) If checksum offload is enabled, the chip will have to both autopad the fragment and calculate its checksum header. This confuses some revs of the 8169, causing the packet that appears on the wire to be corrupted. (The IP addresses and the checksum field are mangled.) This will cause the NFS write to fail. Unfortunately, when NFS retries, it sends the same write request over and over again, and it keeps failing, so NFS stays wedged. (A simple way to provoke the failure is to connect the failing system to a network with a known good machine and do "ping -s 1473 <badhost>" from the good system. The ping will fail.) Someone had previously worked around this using the heavy-handed approahch of just disabling checksum offload. The correct fix is to manually pad short frames where the TCP/IP stack has requested checksum offloading. This allows us to have checksum offload turned on by default but still let NFS work right. - Not a bug, but change the ID strings for devices with hardware rev 0x30000000 and 0x38000000 to both be 8168B/8111B. According to RealTek, they're both the same device, but 0x30000000 is an earlier silicon spin.
2006-07-30 23:25:21 +00:00
{ RL_HWREV_8168_SPIN2, RL_8169, "8168"},
Add another RTL8168 revision 3 which is found on RTL8111-GR Gigabit Ethernet Controller. Multicast filtering wasn't tested and needs more expore. While I'm here change complex if statements with switch statement which would improve readability. Reported by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca > Tested by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca >
2007-12-08 00:14:09 +00:00
{ RL_HWREV_8168_SPIN3, RL_8169, "8168"},
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
{ 0, 0, NULL }
};
static int re_probe (device_t);
static int re_attach (device_t);
static int re_detach (device_t);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
static struct mbuf *re_defrag (struct mbuf *, int, int);
static int re_encap (struct rl_softc *, struct mbuf **);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static void re_dma_map_addr (void *, bus_dma_segment_t *, int, int);
static int re_allocmem (device_t, struct rl_softc *);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
static __inline void re_discard_rxbuf
(struct rl_softc *, int);
static int re_newbuf (struct rl_softc *, int);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static int re_rx_list_init (struct rl_softc *);
static int re_tx_list_init (struct rl_softc *);
fix jumbo frames as much as they can be fixed for re. We now cap the MTU to 7422 since it appears that the 8169S can't transmit anything larger.. The 8169S can receive full jumbo frames, but we don't have an mru to let the upper layers know this... add fixup so that this driver should work on alignment constrained platforms (!i386 && !amd64) MFC after: 5 days
2004-09-28 18:22:24 +00:00
#ifdef RE_FIXUP_RX
static __inline void re_fixup_rx
(struct mbuf *);
#endif
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
static int re_rxeof (struct rl_softc *);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static void re_txeof (struct rl_softc *);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
#ifdef DEVICE_POLLING
Fixed build with DEVICE_POLLING defined.
2004-09-04 07:54:05 +00:00
static void re_poll (struct ifnet *, enum poll_cmd, int);
static void re_poll_locked (struct ifnet *, enum poll_cmd, int);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
#endif
o break newbus api: add a new argument of type driver_filter_t to bus_setup_intr() o add an int return code to all fast handlers o retire INTR_FAST/IH_FAST For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current Reviewed by: many Approved by: re@
2007-02-23 12:19:07 +00:00
static int re_intr (void *);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static void re_tick (void *);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
static void re_tx_task (void *, int);
static void re_int_task (void *, int);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static void re_start (struct ifnet *);
static int re_ioctl (struct ifnet *, u_long, caddr_t);
static void re_init (void *);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
static void re_init_locked (struct rl_softc *);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static void re_stop (struct rl_softc *);
- Use the re_tick() callout instead of if_slowtimo() for driving re_watchdog() in order to avoid races accessing if_timer. - Use bus_get_dma_tag() so re(4) works on platforms requiring it. - Remove invalid BUS_DMA_ALLOCNOW when creating the parent DMA tag and the tags that are used for static memory allocations. - Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that. - Remove an unused variable in re_intr().
2006-12-20 02:13:59 +00:00
static void re_watchdog (struct rl_softc *);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static int re_suspend (device_t);
static int re_resume (device_t);
Fix function prototype for device_shutdown method.
2007-11-22 02:45:00 +00:00
static int re_shutdown (device_t);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static int re_ifmedia_upd (struct ifnet *);
static void re_ifmedia_sts (struct ifnet *, struct ifmediareq *);
static void re_eeprom_putbyte (struct rl_softc *, int);
static void re_eeprom_getword (struct rl_softc *, int, u_int16_t *);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
static void re_read_eeprom (struct rl_softc *, caddr_t, int, int);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static int re_gmii_readreg (device_t, int, int);
static int re_gmii_writereg (device_t, int, int, int);
static int re_miibus_readreg (device_t, int, int);
static int re_miibus_writereg (device_t, int, int, int);
static void re_miibus_statchg (device_t);
static void re_setmulti (struct rl_softc *);
static void re_reset (struct rl_softc *);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#ifdef RE_DIAG
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static int re_diag (struct rl_softc *);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#endif
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
#ifdef RE_USEIOSPACE
#define RL_RES SYS_RES_IOPORT
#define RL_RID RL_PCI_LOIO
#else
#define RL_RES SYS_RES_MEMORY
#define RL_RID RL_PCI_LOMEM
#endif
static device_method_t re_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, re_probe),
DEVMETHOD(device_attach, re_attach),
DEVMETHOD(device_detach, re_detach),
DEVMETHOD(device_suspend, re_suspend),
DEVMETHOD(device_resume, re_resume),
DEVMETHOD(device_shutdown, re_shutdown),
/* bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
/* MII interface */
DEVMETHOD(miibus_readreg, re_miibus_readreg),
DEVMETHOD(miibus_writereg, re_miibus_writereg),
DEVMETHOD(miibus_statchg, re_miibus_statchg),
{ 0, 0 }
};
static driver_t re_driver = {
"re",
re_methods,
sizeof(struct rl_softc)
};
static devclass_t re_devclass;
DRIVER_MODULE(re, pci, re_driver, re_devclass, 0, 0);
Sometimes cardbus attachments don't attach, so while we track down this problem put these lines back in. While they should be unnecessary, they appear to be sometimes necessary. Reviewed in concept: dfr Approved by: re (scottl@)
2003-11-28 05:28:29 +00:00
DRIVER_MODULE(re, cardbus, re_driver, re_devclass, 0, 0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
DRIVER_MODULE(miibus, re, miibus_driver, miibus_devclass, 0, 0);
#define EE_SET(x) \
CSR_WRITE_1(sc, RL_EECMD, \
CSR_READ_1(sc, RL_EECMD) | x)
#define EE_CLR(x) \
CSR_WRITE_1(sc, RL_EECMD, \
CSR_READ_1(sc, RL_EECMD) & ~x)
/*
* Send a read command and address to the EEPROM, check for ACK.
*/
static void
re_eeprom_putbyte(sc, addr)
struct rl_softc *sc;
int addr;
{
register int d, i;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
d = addr | (RL_9346_READ << sc->rl_eewidth);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Feed in each bit and strobe the clock.
*/
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
for (i = 1 << (sc->rl_eewidth + 3); i; i >>= 1) {
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (d & i) {
EE_SET(RL_EE_DATAIN);
} else {
EE_CLR(RL_EE_DATAIN);
}
DELAY(100);
EE_SET(RL_EE_CLK);
DELAY(150);
EE_CLR(RL_EE_CLK);
DELAY(100);
}
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
return;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/*
* Read a word of data stored in the EEPROM at address 'addr.'
*/
static void
re_eeprom_getword(sc, addr, dest)
struct rl_softc *sc;
int addr;
u_int16_t *dest;
{
register int i;
u_int16_t word = 0;
/*
* Send address of word we want to read.
*/
re_eeprom_putbyte(sc, addr);
/*
* Start reading bits from EEPROM.
*/
for (i = 0x8000; i; i >>= 1) {
EE_SET(RL_EE_CLK);
DELAY(100);
if (CSR_READ_1(sc, RL_EECMD) & RL_EE_DATAOUT)
word |= i;
EE_CLR(RL_EE_CLK);
DELAY(100);
}
*dest = word;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
return;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/*
* Read a sequence of words from the EEPROM.
*/
static void
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
re_read_eeprom(sc, dest, off, cnt)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
struct rl_softc *sc;
caddr_t dest;
int off;
int cnt;
{
int i;
u_int16_t word = 0, *ptr;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_SETBIT_1(sc, RL_EECMD, RL_EEMODE_PROGRAM);
DELAY(100);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
for (i = 0; i < cnt; i++) {
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_SETBIT_1(sc, RL_EECMD, RL_EE_SEL);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re_eeprom_getword(sc, off + i, &word);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_CLRBIT_1(sc, RL_EECMD, RL_EE_SEL);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
ptr = (u_int16_t *)(dest + (i * 2));
Fix re(4) breakge introduced in tree from rev 1.68. This should fix incorrect configuration of station address on big-endian architectures. Reviewed by: wpaul Tested on: sparc64
2006-08-03 00:15:19 +00:00
*ptr = word;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_CLRBIT_1(sc, RL_EECMD, RL_EEMODE_PROGRAM);
return;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
static int
re_gmii_readreg(dev, phy, reg)
device_t dev;
int phy, reg;
{
struct rl_softc *sc;
u_int32_t rval;
int i;
if (phy != 1)
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
sc = device_get_softc(dev);
Add a PHY driver to support the built-in gigE PHY in the 8169S/8110S ethernet chips. This driver is pretty simple, however it contains special DSP initialization code which is needed in order to get the chip to negotiate a gigE link. (This special initialization may not be needed in subsequent chip revs.) Also: - Fix typo in if_rlreg.h (RL_GMEDIASTAT_1000MPS -> RL_GMEDIASTAT_1000MBPS) - Deal with shared interrupts in re_intr(): if interface isn't up, return. - Fix another bug in re_gmii_writereg() (properly apply data field mask) - Allow PHY driver to read the RL_GMEDIASTAT register via the re_gmii_readreg() register (this is register needed to determine real time link/media status).
2003-09-11 03:53:46 +00:00
/* Let the rgephy driver read the GMEDIASTAT register */
if (reg == RL_GMEDIASTAT) {
rval = CSR_READ_1(sc, RL_GMEDIASTAT);
Whitespace pass
2004-07-06 02:46:53 +00:00
return (rval);
Add a PHY driver to support the built-in gigE PHY in the 8169S/8110S ethernet chips. This driver is pretty simple, however it contains special DSP initialization code which is needed in order to get the chip to negotiate a gigE link. (This special initialization may not be needed in subsequent chip revs.) Also: - Fix typo in if_rlreg.h (RL_GMEDIASTAT_1000MPS -> RL_GMEDIASTAT_1000MBPS) - Deal with shared interrupts in re_intr(): if interface isn't up, return. - Fix another bug in re_gmii_writereg() (properly apply data field mask) - Allow PHY driver to read the RL_GMEDIASTAT register via the re_gmii_readreg() register (this is register needed to determine real time link/media status).
2003-09-11 03:53:46 +00:00
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
CSR_WRITE_4(sc, RL_PHYAR, reg << 16);
DELAY(1000);
for (i = 0; i < RL_TIMEOUT; i++) {
rval = CSR_READ_4(sc, RL_PHYAR);
if (rval & RL_PHYAR_BUSY)
break;
DELAY(100);
}
if (i == RL_TIMEOUT) {
- Consistently use if_printf() only in interface methods: if_start(), if_watchdog, etc., or in functions used only in these methods. In all other functions in the driver use device_printf(). - Use __func__ instead of typing function name. Submitted by: Alex Lyashkov <umka sevcity.net>
2006-09-15 15:16:12 +00:00
device_printf(sc->rl_dev, "PHY read failed\n");
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
return (0);
}
return (rval & RL_PHYAR_PHYDATA);
}
static int
re_gmii_writereg(dev, phy, reg, data)
device_t dev;
int phy, reg, data;
{
struct rl_softc *sc;
u_int32_t rval;
int i;
sc = device_get_softc(dev);
CSR_WRITE_4(sc, RL_PHYAR, (reg << 16) |
Add a PHY driver to support the built-in gigE PHY in the 8169S/8110S ethernet chips. This driver is pretty simple, however it contains special DSP initialization code which is needed in order to get the chip to negotiate a gigE link. (This special initialization may not be needed in subsequent chip revs.) Also: - Fix typo in if_rlreg.h (RL_GMEDIASTAT_1000MPS -> RL_GMEDIASTAT_1000MBPS) - Deal with shared interrupts in re_intr(): if interface isn't up, return. - Fix another bug in re_gmii_writereg() (properly apply data field mask) - Allow PHY driver to read the RL_GMEDIASTAT register via the re_gmii_readreg() register (this is register needed to determine real time link/media status).
2003-09-11 03:53:46 +00:00
(data & RL_PHYAR_PHYDATA) | RL_PHYAR_BUSY);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
DELAY(1000);
for (i = 0; i < RL_TIMEOUT; i++) {
rval = CSR_READ_4(sc, RL_PHYAR);
if (!(rval & RL_PHYAR_BUSY))
break;
DELAY(100);
}
if (i == RL_TIMEOUT) {
- Consistently use if_printf() only in interface methods: if_start(), if_watchdog, etc., or in functions used only in these methods. In all other functions in the driver use device_printf(). - Use __func__ instead of typing function name. Submitted by: Alex Lyashkov <umka sevcity.net>
2006-09-15 15:16:12 +00:00
device_printf(sc->rl_dev, "PHY write failed\n");
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
return (0);
}
return (0);
}
static int
re_miibus_readreg(dev, phy, reg)
device_t dev;
int phy, reg;
{
struct rl_softc *sc;
u_int16_t rval = 0;
u_int16_t re8139_reg = 0;
sc = device_get_softc(dev);
if (sc->rl_type == RL_8169) {
rval = re_gmii_readreg(dev, phy, reg);
return (rval);
}
/* Pretend the internal PHY is only at address 0 */
if (phy) {
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Whitespace pass
2004-07-06 02:46:53 +00:00
switch (reg) {
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
case MII_BMCR:
re8139_reg = RL_BMCR;
break;
case MII_BMSR:
re8139_reg = RL_BMSR;
break;
case MII_ANAR:
re8139_reg = RL_ANAR;
break;
case MII_ANER:
re8139_reg = RL_ANER;
break;
case MII_ANLPAR:
re8139_reg = RL_LPAR;
break;
case MII_PHYIDR1:
case MII_PHYIDR2:
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Allow the rlphy driver to read the media status
* register. If we have a link partner which does not
* support NWAY, this is the register which will tell
* us the results of parallel detection.
*/
case RL_MEDIASTAT:
rval = CSR_READ_1(sc, RL_MEDIASTAT);
Whitespace pass
2004-07-06 02:46:53 +00:00
return (rval);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
default:
- Consistently use if_printf() only in interface methods: if_start(), if_watchdog, etc., or in functions used only in these methods. In all other functions in the driver use device_printf(). - Use __func__ instead of typing function name. Submitted by: Alex Lyashkov <umka sevcity.net>
2006-09-15 15:16:12 +00:00
device_printf(sc->rl_dev, "bad phy register\n");
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
rval = CSR_READ_2(sc, re8139_reg);
Make 8139C+ work again which was broken since rev 1.68. Ever since rev 1.68 re(4) checks the validity of link in re_start. But rlphy(4) got a garbled data due to a different bit layout used on 8139C+ and it couldn't report correct link state. To fix it, ignore BMCR_LOOP and BMCR_ISO bits which have different meanings on 8139C+. I think this also make dhclient(8) work on 8139C+. Reported by: Gerrit Kuehn <gerrit AT pmp DOT uni-hannover DOT de> Tested by: Gerrit Kuehn <gerrit AT pmp DOT uni-hannover DOT de>
2006-09-08 00:58:02 +00:00
if (sc->rl_type == RL_8139CPLUS && re8139_reg == RL_BMCR) {
/* 8139C+ has different bit layout. */
rval &= ~(BMCR_LOOP | BMCR_ISO);
}
Whitespace pass
2004-07-06 02:46:53 +00:00
return (rval);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
static int
re_miibus_writereg(dev, phy, reg, data)
device_t dev;
int phy, reg, data;
{
struct rl_softc *sc;
u_int16_t re8139_reg = 0;
int rval = 0;
sc = device_get_softc(dev);
if (sc->rl_type == RL_8169) {
rval = re_gmii_writereg(dev, phy, reg, data);
return (rval);
}
/* Pretend the internal PHY is only at address 0 */
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
if (phy)
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
Whitespace pass
2004-07-06 02:46:53 +00:00
switch (reg) {
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
case MII_BMCR:
re8139_reg = RL_BMCR;
Make 8139C+ work again which was broken since rev 1.68. Ever since rev 1.68 re(4) checks the validity of link in re_start. But rlphy(4) got a garbled data due to a different bit layout used on 8139C+ and it couldn't report correct link state. To fix it, ignore BMCR_LOOP and BMCR_ISO bits which have different meanings on 8139C+. I think this also make dhclient(8) work on 8139C+. Reported by: Gerrit Kuehn <gerrit AT pmp DOT uni-hannover DOT de> Tested by: Gerrit Kuehn <gerrit AT pmp DOT uni-hannover DOT de>
2006-09-08 00:58:02 +00:00
if (sc->rl_type == RL_8139CPLUS) {
/* 8139C+ has different bit layout. */
data &= ~(BMCR_LOOP | BMCR_ISO);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
break;
case MII_BMSR:
re8139_reg = RL_BMSR;
break;
case MII_ANAR:
re8139_reg = RL_ANAR;
break;
case MII_ANER:
re8139_reg = RL_ANER;
break;
case MII_ANLPAR:
re8139_reg = RL_LPAR;
break;
case MII_PHYIDR1:
case MII_PHYIDR2:
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
break;
default:
- Consistently use if_printf() only in interface methods: if_start(), if_watchdog, etc., or in functions used only in these methods. In all other functions in the driver use device_printf(). - Use __func__ instead of typing function name. Submitted by: Alex Lyashkov <umka sevcity.net>
2006-09-15 15:16:12 +00:00
device_printf(sc->rl_dev, "bad phy register\n");
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
CSR_WRITE_2(sc, re8139_reg, data);
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
static void
re_miibus_statchg(dev)
device_t dev;
{
Eliminate unneeded return keywords.
2004-07-06 02:48:29 +00:00
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/*
* Program the 64-bit multicast hash filter.
*/
static void
re_setmulti(sc)
struct rl_softc *sc;
{
struct ifnet *ifp;
int h = 0;
u_int32_t hashes[2] = { 0, 0 };
struct ifmultiaddr *ifma;
u_int32_t rxfilt;
int mcnt = 0;
Fix re_setmulti() so that it works correctly for PCIe chips where the multicast hash table are in reverse order compared to older devices.
2007-01-11 20:31:35 +00:00
u_int32_t hwrev;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK_ASSERT(sc);
Stop embedding struct ifnet at the top of driver softcs. Instead the struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam
2005-06-10 16:49:24 +00:00
ifp = sc->rl_ifp;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Always honor promiscuous flag prior to programming Rx multicast filter. This fixes a regression introduced in rev 1.89. PR: 114632 MFC after: 3 days
2007-12-03 01:28:08 +00:00
rxfilt = CSR_READ_4(sc, RL_RXCFG);
rxfilt &= ~(RL_RXCFG_RX_ALLPHYS | RL_RXCFG_RX_MULTI);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
Always honor promiscuous flag prior to programming Rx multicast filter. This fixes a regression introduced in rev 1.89. PR: 114632 MFC after: 3 days
2007-12-03 01:28:08 +00:00
if (ifp->if_flags & IFF_PROMISC)
rxfilt |= RL_RXCFG_RX_ALLPHYS;
By definition promiscuous mode should see all unicast frames as well as multicast/broadcast frames. Previously re(4) ignored multicast frames in promiscuous mode. The RTL8169 datasheet was not clear how it handles multicast frames in promiscuous mode. PR: kern/118572 MFC after: 3 days
2007-12-20 07:26:20 +00:00
/*
* Unlike other hardwares, we have to explicitly set
* RL_RXCFG_RX_MULTI to receive multicast frames in
* promiscuous mode.
*/
rxfilt |= RL_RXCFG_RX_MULTI;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
CSR_WRITE_4(sc, RL_RXCFG, rxfilt);
CSR_WRITE_4(sc, RL_MAR0, 0xFFFFFFFF);
CSR_WRITE_4(sc, RL_MAR4, 0xFFFFFFFF);
return;
}
/* first, zot all the existing hash bits */
CSR_WRITE_4(sc, RL_MAR0, 0);
CSR_WRITE_4(sc, RL_MAR4, 0);
/* now program new ones */
Modify device drivers supporting multicast addresses to lock if_addr_mtx over iteration of their multicast address lists when synchronizing the hardware address filter with the network stack-maintained list. Problem reported by: Ed Maste (emaste at phaedrus dot sandvine dot ca> MFC after: 1 week
2005-08-03 00:18:35 +00:00
IF_ADDR_LOCK(ifp);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
Replace handrolled CRC calculation with ether_crc32_[lb]e().
2004-06-09 14:34:04 +00:00
h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (h < 32)
hashes[0] |= (1 << h);
else
hashes[1] |= (1 << (h - 32));
mcnt++;
}
Modify device drivers supporting multicast addresses to lock if_addr_mtx over iteration of their multicast address lists when synchronizing the hardware address filter with the network stack-maintained list. Problem reported by: Ed Maste (emaste at phaedrus dot sandvine dot ca> MFC after: 1 week
2005-08-03 00:18:35 +00:00
IF_ADDR_UNLOCK(ifp);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (mcnt)
rxfilt |= RL_RXCFG_RX_MULTI;
else
rxfilt &= ~RL_RXCFG_RX_MULTI;
CSR_WRITE_4(sc, RL_RXCFG, rxfilt);
Fix re_setmulti() so that it works correctly for PCIe chips where the multicast hash table are in reverse order compared to older devices.
2007-01-11 20:31:35 +00:00
/*
* For some unfathomable reason, RealTek decided to reverse
* the order of the multicast hash registers in the PCI Express
* parts. This means we have to write the hash pattern in reverse
* order for those devices.
*/
hwrev = CSR_READ_4(sc, RL_TXCFG) & RL_TXCFG_HWREV;
Add another RTL8168 revision 3 which is found on RTL8111-GR Gigabit Ethernet Controller. Multicast filtering wasn't tested and needs more expore. While I'm here change complex if statements with switch statement which would improve readability. Reported by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca > Tested by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca >
2007-12-08 00:14:09 +00:00
switch (hwrev) {
case RL_HWREV_8100E:
case RL_HWREV_8101E:
case RL_HWREV_8168_SPIN1:
case RL_HWREV_8168_SPIN2:
case RL_HWREV_8168_SPIN3:
Fix re_setmulti() so that it works correctly for PCIe chips where the multicast hash table are in reverse order compared to older devices.
2007-01-11 20:31:35 +00:00
CSR_WRITE_4(sc, RL_MAR0, bswap32(hashes[1]));
CSR_WRITE_4(sc, RL_MAR4, bswap32(hashes[0]));
Add another RTL8168 revision 3 which is found on RTL8111-GR Gigabit Ethernet Controller. Multicast filtering wasn't tested and needs more expore. While I'm here change complex if statements with switch statement which would improve readability. Reported by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca > Tested by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca >
2007-12-08 00:14:09 +00:00
break;
default:
Fix re_setmulti() so that it works correctly for PCIe chips where the multicast hash table are in reverse order compared to older devices.
2007-01-11 20:31:35 +00:00
CSR_WRITE_4(sc, RL_MAR0, hashes[0]);
CSR_WRITE_4(sc, RL_MAR4, hashes[1]);
Add another RTL8168 revision 3 which is found on RTL8111-GR Gigabit Ethernet Controller. Multicast filtering wasn't tested and needs more expore. While I'm here change complex if statements with switch statement which would improve readability. Reported by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca > Tested by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca >
2007-12-08 00:14:09 +00:00
break;
Fix re_setmulti() so that it works correctly for PCIe chips where the multicast hash table are in reverse order compared to older devices.
2007-01-11 20:31:35 +00:00
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
static void
re_reset(sc)
struct rl_softc *sc;
{
register int i;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK_ASSERT(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
CSR_WRITE_1(sc, RL_COMMAND, RL_CMD_RESET);
for (i = 0; i < RL_TIMEOUT; i++) {
DELAY(10);
if (!(CSR_READ_1(sc, RL_COMMAND) & RL_CMD_RESET))
break;
}
if (i == RL_TIMEOUT)
- Consistently use if_printf() only in interface methods: if_start(), if_watchdog, etc., or in functions used only in these methods. In all other functions in the driver use device_printf(). - Use __func__ instead of typing function name. Submitted by: Alex Lyashkov <umka sevcity.net>
2006-09-15 15:16:12 +00:00
device_printf(sc->rl_dev, "reset never completed!\n");
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
CSR_WRITE_1(sc, 0x82, 1);
}
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#ifdef RE_DIAG
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* The following routine is designed to test for a defect on some
* 32-bit 8169 cards. Some of these NICs have the REQ64# and ACK64#
* lines connected to the bus, however for a 32-bit only card, they
* should be pulled high. The result of this defect is that the
* NIC will not work right if you plug it into a 64-bit slot: DMA
* operations will be done with 64-bit transfers, which will fail
* because the 64-bit data lines aren't connected.
*
* There's no way to work around this (short of talking a soldering
* iron to the board), however we can detect it. The method we use
* here is to put the NIC into digital loopback mode, set the receiver
* to promiscuous mode, and then try to send a frame. We then compare
* the frame data we sent to what was received. If the data matches,
* then the NIC is working correctly, otherwise we know the user has
* a defective NIC which has been mistakenly plugged into a 64-bit PCI
* slot. In the latter case, there's no way the NIC can work correctly,
* so we print out a message on the console and abort the device attach.
*/
static int
re_diag(sc)
struct rl_softc *sc;
{
Stop embedding struct ifnet at the top of driver softcs. Instead the struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam
2005-06-10 16:49:24 +00:00
struct ifnet *ifp = sc->rl_ifp;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
struct mbuf *m0;
struct ether_header *eh;
struct rl_desc *cur_rx;
u_int16_t status;
u_int32_t rxstat;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
int total_len, i, error = 0, phyaddr;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
u_int8_t dst[] = { 0x00, 'h', 'e', 'l', 'l', 'o' };
u_int8_t src[] = { 0x00, 'w', 'o', 'r', 'l', 'd' };
/* Allocate a single mbuf */
MGETHDR(m0, M_DONTWAIT, MT_DATA);
if (m0 == NULL)
Whitespace pass
2004-07-06 02:46:53 +00:00
return (ENOBUFS);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Initialize the NIC in test mode. This sets the chip up
* so that it can send and receive frames, but performs the
* following special functions:
* - Puts receiver in promiscuous mode
* - Enables digital loopback mode
* - Leaves interrupts turned off
*/
ifp->if_flags |= IFF_PROMISC;
sc->rl_testmode = 1;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
re_reset(sc);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
re_init_locked(sc);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
sc->rl_link = 1;
if (sc->rl_type == RL_8169)
phyaddr = 1;
else
phyaddr = 0;
re_miibus_writereg(sc->rl_dev, phyaddr, MII_BMCR, BMCR_RESET);
for (i = 0; i < RL_TIMEOUT; i++) {
status = re_miibus_readreg(sc->rl_dev, phyaddr, MII_BMCR);
if (!(status & BMCR_RESET))
break;
}
re_miibus_writereg(sc->rl_dev, phyaddr, MII_BMCR, BMCR_LOOP);
CSR_WRITE_2(sc, RL_ISR, RL_INTRS);
Toggle the interface on and off before starting the diag test. This seems to be necessary for the 8139C+ under certain circumstances, and doesn't appear to hurt the other chips. (In the failure case, the packet would be sent through the TX DMA ring but not get echoed back. I suspect this has something to do with the link state changing unexpectedly.)
2003-09-11 07:54:16 +00:00
DELAY(100000);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Put some data in the mbuf */
eh = mtod(m0, struct ether_header *);
bcopy ((char *)&dst, eh->ether_dhost, ETHER_ADDR_LEN);
bcopy ((char *)&src, eh->ether_shost, ETHER_ADDR_LEN);
eh->ether_type = htons(ETHERTYPE_IP);
m0->m_pkthdr.len = m0->m_len = ETHER_MIN_LEN - ETHER_CRC_LEN;
In re_diag(), there's no need for us to call re_start() ourselves: IF_HANDOFF() does it for us behind the scenes. Remove the extra call to re_start() otherwise we try to transmit twice. In re_encap(), fix the code that guards against consuming too many descriptors in the TX ring so that it actually works. With the new 8169S chip, I was able to hit a corner case that drained the free descriptor count all the way to 0. This is not supposed to be possible.
2003-09-18 18:32:15 +00:00
/*
* Queue the packet, start transmission.
* Note: IF_HANDOFF() ultimately calls re_start() for us.
*/
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
CSR_WRITE_2(sc, RL_ISR, 0xFFFF);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_UNLOCK(sc);
ALTQ support for re(4). Submitted by: Chris Dionissopoulos, Theo Schlossnagle PR: kern/78681 MFC after: 2 weeks
2005-03-12 17:35:37 +00:00
/* XXX: re_diag must not be called when in ALTQ mode */
In re_diag(), there's no need for us to call re_start() ourselves: IF_HANDOFF() does it for us behind the scenes. Remove the extra call to re_start() otherwise we try to transmit twice. In re_encap(), fix the code that guards against consuming too many descriptors in the TX ring so that it actually works. With the new 8169S chip, I was able to hit a corner case that drained the free descriptor count all the way to 0. This is not supposed to be possible.
2003-09-18 18:32:15 +00:00
IF_HANDOFF(&ifp->if_snd, m0, ifp);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
m0 = NULL;
/* Wait for it to propagate through the chip */
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
DELAY(100000);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
for (i = 0; i < RL_TIMEOUT; i++) {
status = CSR_READ_2(sc, RL_ISR);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_WRITE_2(sc, RL_ISR, status);
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
if ((status & (RL_ISR_TIMEOUT_EXPIRED|RL_ISR_RX_OK)) ==
(RL_ISR_TIMEOUT_EXPIRED|RL_ISR_RX_OK))
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
break;
DELAY(10);
}
if (i == RL_TIMEOUT) {
- Consistently use if_printf() only in interface methods: if_start(), if_watchdog, etc., or in functions used only in these methods. In all other functions in the driver use device_printf(). - Use __func__ instead of typing function name. Submitted by: Alex Lyashkov <umka sevcity.net>
2006-09-15 15:16:12 +00:00
device_printf(sc->rl_dev,
"diagnostic failed, failed to receive packet in"
" loopback mode\n");
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
error = EIO;
goto done;
}
/*
* The packet should have been dumped into the first
* entry in the RX DMA ring. Grab it from there.
*/
bus_dmamap_sync(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list_map,
BUS_DMASYNC_POSTREAD);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
bus_dmamap_sync(sc->rl_ldata.rl_rx_mtag,
sc->rl_ldata.rl_rx_desc[0].rx_dmamap,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->rl_ldata.rl_rx_mtag,
sc->rl_ldata.rl_rx_desc[0].rx_dmamap);
m0 = sc->rl_ldata.rl_rx_desc[0].rx_m;
sc->rl_ldata.rl_rx_desc[0].rx_m = NULL;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
eh = mtod(m0, struct ether_header *);
cur_rx = &sc->rl_ldata.rl_rx_list[0];
total_len = RL_RXBYTES(cur_rx);
rxstat = le32toh(cur_rx->rl_cmdstat);
if (total_len != ETHER_MIN_LEN) {
- Consistently use if_printf() only in interface methods: if_start(), if_watchdog, etc., or in functions used only in these methods. In all other functions in the driver use device_printf(). - Use __func__ instead of typing function name. Submitted by: Alex Lyashkov <umka sevcity.net>
2006-09-15 15:16:12 +00:00
device_printf(sc->rl_dev,
"diagnostic failed, received short packet\n");
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
error = EIO;
goto done;
}
/* Test that the received packet data matches what we sent. */
if (bcmp((char *)&eh->ether_dhost, (char *)&dst, ETHER_ADDR_LEN) ||
bcmp((char *)&eh->ether_shost, (char *)&src, ETHER_ADDR_LEN) ||
ntohs(eh->ether_type) != ETHERTYPE_IP) {
- Consistently use if_printf() only in interface methods: if_start(), if_watchdog, etc., or in functions used only in these methods. In all other functions in the driver use device_printf(). - Use __func__ instead of typing function name. Submitted by: Alex Lyashkov <umka sevcity.net>
2006-09-15 15:16:12 +00:00
device_printf(sc->rl_dev, "WARNING, DMA FAILURE!\n");
device_printf(sc->rl_dev, "expected TX data: %6D/%6D/0x%x\n",
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
dst, ":", src, ":", ETHERTYPE_IP);
- Consistently use if_printf() only in interface methods: if_start(), if_watchdog, etc., or in functions used only in these methods. In all other functions in the driver use device_printf(). - Use __func__ instead of typing function name. Submitted by: Alex Lyashkov <umka sevcity.net>
2006-09-15 15:16:12 +00:00
device_printf(sc->rl_dev, "received RX data: %6D/%6D/0x%x\n",
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
eh->ether_dhost, ":", eh->ether_shost, ":",
ntohs(eh->ether_type));
- Consistently use if_printf() only in interface methods: if_start(), if_watchdog, etc., or in functions used only in these methods. In all other functions in the driver use device_printf(). - Use __func__ instead of typing function name. Submitted by: Alex Lyashkov <umka sevcity.net>
2006-09-15 15:16:12 +00:00
device_printf(sc->rl_dev, "You may have a defective 32-bit "
"NIC plugged into a 64-bit PCI slot.\n");
device_printf(sc->rl_dev, "Please re-install the NIC in a "
"32-bit slot for proper operation.\n");
device_printf(sc->rl_dev, "Read the re(4) man page for more "
"details.\n");
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
error = EIO;
}
done:
/* Turn interface off, release resources */
sc->rl_testmode = 0;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
sc->rl_link = 0;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
ifp->if_flags &= ~IFF_PROMISC;
re_stop(sc);
if (m0 != NULL)
m_freem(m0);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
return (error);
}
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#endif
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Probe for a RealTek 8139C+/8169/8110 chip. Check the PCI vendor and device
* IDs against our list and return a device name if we find a match.
*/
static int
re_probe(dev)
device_t dev;
{
struct rl_type *t;
struct rl_softc *sc;
int rid;
u_int32_t hwrev;
t = re_devs;
sc = device_get_softc(dev);
Whitespace pass
2004-07-06 02:46:53 +00:00
while (t->rl_name != NULL) {
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if ((pci_get_vendor(dev) == t->rl_vid) &&
(pci_get_device(dev) == t->rl_did)) {
Only allow the sk(4) driver to attach to revision 2 of the LinkSys EG1032 cards and teach the re(4) driver to attach to revision 3 cards. Submitted by: Fredrik Lindberg fli+freebsd-current at shapeshifter dot se MFC after: 2 weeks Reviewed by: imp, mdodd
2005-10-14 18:51:30 +00:00
/*
* Only attach to rev. 3 of the Linksys EG1032 adapter.
* Rev. 2 i supported by sk(4).
*/
if ((t->rl_vid == LINKSYS_VENDORID) &&
(t->rl_did == LINKSYS_DEVICEID_EG1032) &&
(pci_get_subdevice(dev) !=
LINKSYS_SUBDEVICE_EG1032_REV3)) {
t++;
continue;
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Temporarily map the I/O space
* so we can read the chip ID register.
*/
rid = RL_RID;
Convert callers to the new bus_alloc_resource_any(9) API. Submitted by: Mark Santcroos <marks@ripe.net> Reviewed by: imp, dfr, bde
2004-03-17 17:50:55 +00:00
sc->rl_res = bus_alloc_resource_any(dev, RL_RES, &rid,
RF_ACTIVE);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (sc->rl_res == NULL) {
device_printf(dev,
"couldn't map ports/memory\n");
Whitespace pass
2004-07-06 02:46:53 +00:00
return (ENXIO);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
sc->rl_btag = rman_get_bustag(sc->rl_res);
sc->rl_bhandle = rman_get_bushandle(sc->rl_res);
hwrev = CSR_READ_4(sc, RL_TXCFG) & RL_TXCFG_HWREV;
bus_release_resource(dev, RL_RES,
RL_RID, sc->rl_res);
if (t->rl_basetype == hwrev) {
device_set_desc(dev, t->rl_name);
Use BUS_PROBE_DEFAULT in preference to 0 and BUS_PROBE_LOW_PRIORITY in preference to some random negative number to allow other drivers a bite at the apple.
2005-03-01 08:58:06 +00:00
return (BUS_PROBE_DEFAULT);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
}
t++;
}
Whitespace pass
2004-07-06 02:46:53 +00:00
return (ENXIO);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/*
* Map a single buffer address.
*/
static void
re_dma_map_addr(arg, segs, nseg, error)
void *arg;
bus_dma_segment_t *segs;
int nseg;
int error;
{
Use correct pointer type. This should fix non-functional re(4) driver on 64bit architectures. Approved by: re (scottl)
2005-07-01 04:12:42 +00:00
bus_addr_t *addr;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (error)
return;
KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg));
addr = arg;
*addr = segs->ds_addr;
}
static int
re_allocmem(dev, sc)
device_t dev;
struct rl_softc *sc;
{
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
bus_size_t rx_list_size, tx_list_size;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
int error;
int i;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
rx_list_size = sc->rl_ldata.rl_rx_desc_cnt * sizeof(struct rl_desc);
tx_list_size = sc->rl_ldata.rl_tx_desc_cnt * sizeof(struct rl_desc);
/*
* Allocate the parent bus DMA tag appropriate for PCI.
*/
error = bus_dma_tag_create(bus_get_dma_tag(dev), 1, 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0,
NULL, NULL, &sc->rl_parent_tag);
if (error) {
device_printf(dev, "could not allocate parent DMA tag\n");
return (error);
}
/*
* Allocate map for TX mbufs.
*/
error = bus_dma_tag_create(sc->rl_parent_tag, 1, 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, MCLBYTES * RL_NTXSEGS, RL_NTXSEGS, 4096, 0,
NULL, NULL, &sc->rl_ldata.rl_tx_mtag);
if (error) {
device_printf(dev, "could not allocate TX DMA tag\n");
return (error);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Allocate map for RX mbufs.
*/
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
error = bus_dma_tag_create(sc->rl_parent_tag, sizeof(uint64_t), 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
MCLBYTES, 1, MCLBYTES, 0, NULL, NULL, &sc->rl_ldata.rl_rx_mtag);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (error) {
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
device_printf(dev, "could not allocate RX DMA tag\n");
return (error);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/*
* Allocate map for TX descriptor list.
*/
error = bus_dma_tag_create(sc->rl_parent_tag, RL_RING_ALIGN,
0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL,
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
NULL, tx_list_size, 1, tx_list_size, 0,
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
NULL, NULL, &sc->rl_ldata.rl_tx_list_tag);
if (error) {
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
device_printf(dev, "could not allocate TX DMA ring tag\n");
return (error);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/* Allocate DMA'able memory for the TX ring */
Whitespace pass
2004-07-06 02:46:53 +00:00
error = bus_dmamem_alloc(sc->rl_ldata.rl_tx_list_tag,
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
(void **)&sc->rl_ldata.rl_tx_list,
BUS_DMA_WAITOK | BUS_DMA_COHERENT | BUS_DMA_ZERO,
Whitespace pass
2004-07-06 02:46:53 +00:00
&sc->rl_ldata.rl_tx_list_map);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (error) {
device_printf(dev, "could not allocate TX DMA ring\n");
return (error);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Load the map for the TX ring. */
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
sc->rl_ldata.rl_tx_list_addr = 0;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
error = bus_dmamap_load(sc->rl_ldata.rl_tx_list_tag,
sc->rl_ldata.rl_tx_list_map, sc->rl_ldata.rl_tx_list,
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
tx_list_size, re_dma_map_addr,
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
&sc->rl_ldata.rl_tx_list_addr, BUS_DMA_NOWAIT);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (error != 0 || sc->rl_ldata.rl_tx_list_addr == 0) {
device_printf(dev, "could not load TX DMA ring\n");
return (ENOMEM);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Create DMA maps for TX buffers */
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++) {
error = bus_dmamap_create(sc->rl_ldata.rl_tx_mtag, 0,
&sc->rl_ldata.rl_tx_desc[i].tx_dmamap);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (error) {
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
device_printf(dev, "could not create DMA map for TX\n");
return (error);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
}
/*
* Allocate map for RX descriptor list.
*/
error = bus_dma_tag_create(sc->rl_parent_tag, RL_RING_ALIGN,
0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL,
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
NULL, rx_list_size, 1, rx_list_size, 0,
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
NULL, NULL, &sc->rl_ldata.rl_rx_list_tag);
if (error) {
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
device_printf(dev, "could not create RX DMA ring tag\n");
return (error);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/* Allocate DMA'able memory for the RX ring */
Whitespace pass
2004-07-06 02:46:53 +00:00
error = bus_dmamem_alloc(sc->rl_ldata.rl_rx_list_tag,
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
(void **)&sc->rl_ldata.rl_rx_list,
BUS_DMA_WAITOK | BUS_DMA_COHERENT | BUS_DMA_ZERO,
Whitespace pass
2004-07-06 02:46:53 +00:00
&sc->rl_ldata.rl_rx_list_map);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (error) {
device_printf(dev, "could not allocate RX DMA ring\n");
return (error);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Load the map for the RX ring. */
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
sc->rl_ldata.rl_rx_list_addr = 0;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
error = bus_dmamap_load(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list_map, sc->rl_ldata.rl_rx_list,
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
rx_list_size, re_dma_map_addr,
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
&sc->rl_ldata.rl_rx_list_addr, BUS_DMA_NOWAIT);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (error != 0 || sc->rl_ldata.rl_rx_list_addr == 0) {
device_printf(dev, "could not load RX DMA ring\n");
return (ENOMEM);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Create DMA maps for RX buffers */
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
error = bus_dmamap_create(sc->rl_ldata.rl_rx_mtag, 0,
&sc->rl_ldata.rl_rx_sparemap);
if (error) {
device_printf(dev, "could not create spare DMA map for RX\n");
return (error);
}
for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++) {
error = bus_dmamap_create(sc->rl_ldata.rl_rx_mtag, 0,
&sc->rl_ldata.rl_rx_desc[i].rx_dmamap);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (error) {
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
device_printf(dev, "could not create DMA map for RX\n");
return (error);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
}
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/*
* Attach the interface. Allocate softc structures, do ifmedia
* setup and ethernet/BPF attach.
*/
static int
re_attach(dev)
device_t dev;
{
u_char eaddr[ETHER_ADDR_LEN];
Fix re(4) breakge introduced in tree from rev 1.68. This should fix incorrect configuration of station address on big-endian architectures. Reviewed by: wpaul Tested on: sparc64
2006-08-03 00:15:19 +00:00
u_int16_t as[ETHER_ADDR_LEN / 2];
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
struct rl_softc *sc;
struct ifnet *ifp;
struct rl_hwrev *hw_rev;
int hwrev;
u_int16_t re_did = 0;
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
int error = 0, rid, i;
Add MSI support. Ever since switching to adaptive polling re(4) occasionally spews watchdog timeouts on systems with MSI capability. This change is minimal one for supporting MSI and re(4) also needs MSIX support for RTL8111C in future. Because softc structure of re(4) is shared with rl(4), rl(4) was touched to use the modified softc. Reported by: cnst Tested by: cnst Approved by: re (kensmith)
2007-07-24 01:24:03 +00:00
int msic, reg;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
sc = device_get_softc(dev);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
sc->rl_dev = dev;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
mtx_init(&sc->rl_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
MTX_DEF);
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
callout_init_mtx(&sc->rl_stat_callout, &sc->rl_mtx, 0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Map control/status registers.
*/
pci_enable_busmaster(dev);
rid = RL_RID;
Convert callers to the new bus_alloc_resource_any(9) API. Submitted by: Mark Santcroos <marks@ripe.net> Reviewed by: imp, dfr, bde
2004-03-17 17:50:55 +00:00
sc->rl_res = bus_alloc_resource_any(dev, RL_RES, &rid,
RF_ACTIVE);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (sc->rl_res == NULL) {
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
device_printf(dev, "couldn't map ports/memory\n");
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
error = ENXIO;
goto fail;
}
sc->rl_btag = rman_get_bustag(sc->rl_res);
sc->rl_bhandle = rman_get_bushandle(sc->rl_res);
Add MSI support. Ever since switching to adaptive polling re(4) occasionally spews watchdog timeouts on systems with MSI capability. This change is minimal one for supporting MSI and re(4) also needs MSIX support for RTL8111C in future. Because softc structure of re(4) is shared with rl(4), rl(4) was touched to use the modified softc. Reported by: cnst Tested by: cnst Approved by: re (kensmith)
2007-07-24 01:24:03 +00:00
msic = 0;
if (pci_find_extcap(dev, PCIY_EXPRESS, &reg) == 0) {
msic = pci_msi_count(dev);
if (bootverbose)
device_printf(dev, "MSI count : %d\n", msic);
}
if (msic == RL_MSI_MESSAGES && msi_disable == 0) {
if (pci_alloc_msi(dev, &msic) == 0) {
if (msic == RL_MSI_MESSAGES) {
device_printf(dev, "Using %d MSI messages\n",
msic);
sc->rl_msi = 1;
style(9) Pointed out by: cnst Approved by: re (kensmith)
2007-07-27 00:43:12 +00:00
} else
pci_release_msi(dev);
Add MSI support. Ever since switching to adaptive polling re(4) occasionally spews watchdog timeouts on systems with MSI capability. This change is minimal one for supporting MSI and re(4) also needs MSIX support for RTL8111C in future. Because softc structure of re(4) is shared with rl(4), rl(4) was touched to use the modified softc. Reported by: cnst Tested by: cnst Approved by: re (kensmith)
2007-07-24 01:24:03 +00:00
}
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add MSI support. Ever since switching to adaptive polling re(4) occasionally spews watchdog timeouts on systems with MSI capability. This change is minimal one for supporting MSI and re(4) also needs MSIX support for RTL8111C in future. Because softc structure of re(4) is shared with rl(4), rl(4) was touched to use the modified softc. Reported by: cnst Tested by: cnst Approved by: re (kensmith)
2007-07-24 01:24:03 +00:00
/* Allocate interrupt */
if (sc->rl_msi == 0) {
rid = 0;
sc->rl_irq[0] = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->rl_irq[0] == NULL) {
device_printf(dev, "couldn't allocate IRQ resources\n");
error = ENXIO;
goto fail;
}
} else {
for (i = 0, rid = 1; i < RL_MSI_MESSAGES; i++, rid++) {
sc->rl_irq[i] = bus_alloc_resource_any(dev,
SYS_RES_IRQ, &rid, RF_ACTIVE);
if (sc->rl_irq[i] == NULL) {
device_printf(dev,
"couldn't llocate IRQ resources for "
"message %d\n", rid);
error = ENXIO;
goto fail;
}
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/* Reset the adapter. */
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re_reset(sc);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
hw_rev = re_hwrevs;
hwrev = CSR_READ_4(sc, RL_TXCFG) & RL_TXCFG_HWREV;
while (hw_rev->rl_desc != NULL) {
if (hw_rev->rl_rev == hwrev) {
sc->rl_type = hw_rev->rl_type;
break;
}
hw_rev++;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (hw_rev->rl_desc == NULL) {
device_printf(dev, "Unknown H/W revision: %08x\n", hwrev);
error = ENXIO;
goto fail;
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re(4) devices requires an external EEPROM. Depending on models it would be 93C46(1Kbit) or 93C56(2Kbit). One of differences between them is number of address lines required to access the EEPROM. For example, 93C56 EEPROM needs 8 address lines to read/write data. If 93C56 recevied premature end of required number of serial clock(CLK) to set OP code/address of EEPROM, the result would be unexpected behavior. Previously it tried to detect 93C46, which requires 6 address lines, and then assumed it would be 93C56 if read data was not expected value. However, this approach didn't work in some models/situations as 93C56 requries 8 address lines to access its data. In order to fix it, change EEPROM probing order such that 93C56 is detected reliably. While I'm here change hard-coded address line numbers with defined constant to enhance readability. PR: 112710 Approved by: re (mux)
2007-07-06 00:05:12 +00:00
sc->rl_eewidth = RL_9356_ADDR_LEN;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
re_read_eeprom(sc, (caddr_t)&re_did, 0, 1);
if (re_did != 0x8129)
re(4) devices requires an external EEPROM. Depending on models it would be 93C46(1Kbit) or 93C56(2Kbit). One of differences between them is number of address lines required to access the EEPROM. For example, 93C56 EEPROM needs 8 address lines to read/write data. If 93C56 recevied premature end of required number of serial clock(CLK) to set OP code/address of EEPROM, the result would be unexpected behavior. Previously it tried to detect 93C46, which requires 6 address lines, and then assumed it would be 93C56 if read data was not expected value. However, this approach didn't work in some models/situations as 93C56 requries 8 address lines to access its data. In order to fix it, change EEPROM probing order such that 93C56 is detected reliably. While I'm here change hard-coded address line numbers with defined constant to enhance readability. PR: 112710 Approved by: re (mux)
2007-07-06 00:05:12 +00:00
sc->rl_eewidth = RL_9346_ADDR_LEN;
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
/*
* Get station address from the EEPROM.
*/
re_read_eeprom(sc, (caddr_t)as, RL_EE_EADDR, 3);
Fix re(4) breakge introduced in tree from rev 1.68. This should fix incorrect configuration of station address on big-endian architectures. Reviewed by: wpaul Tested on: sparc64
2006-08-03 00:15:19 +00:00
for (i = 0; i < ETHER_ADDR_LEN / 2; i++)
as[i] = le16toh(as[i]);
bcopy(as, eaddr, sizeof(eaddr));
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if (sc->rl_type == RL_8169) {
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
/* Set RX length mask and number of descriptors. */
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
sc->rl_rxlenmask = RL_RDESC_STAT_GFRAGLEN;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
sc->rl_txstart = RL_GTXSTART;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
sc->rl_ldata.rl_tx_desc_cnt = RL_8169_TX_DESC_CNT;
sc->rl_ldata.rl_rx_desc_cnt = RL_8169_RX_DESC_CNT;
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
} else {
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
/* Set RX length mask and number of descriptors. */
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
sc->rl_rxlenmask = RL_RDESC_STAT_FRAGLEN;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
sc->rl_txstart = RL_TXSTART;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
sc->rl_ldata.rl_tx_desc_cnt = RL_8139_TX_DESC_CNT;
sc->rl_ldata.rl_rx_desc_cnt = RL_8139_RX_DESC_CNT;
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
}
Add a PHY driver to support the built-in gigE PHY in the 8169S/8110S ethernet chips. This driver is pretty simple, however it contains special DSP initialization code which is needed in order to get the chip to negotiate a gigE link. (This special initialization may not be needed in subsequent chip revs.) Also: - Fix typo in if_rlreg.h (RL_GMEDIASTAT_1000MPS -> RL_GMEDIASTAT_1000MBPS) - Deal with shared interrupts in re_intr(): if interface isn't up, return. - Fix another bug in re_gmii_writereg() (properly apply data field mask) - Allow PHY driver to read the RL_GMEDIASTAT register via the re_gmii_readreg() register (this is register needed to determine real time link/media status).
2003-09-11 03:53:46 +00:00
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
error = re_allocmem(dev, sc);
if (error)
goto fail;
Move if_alloc() up so it's before mii_phy_probe().
2005-06-11 01:37:46 +00:00
ifp = sc->rl_ifp = if_alloc(IFT_ETHER);
if (ifp == NULL) {
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
device_printf(dev, "can not if_alloc()\n");
Move if_alloc() up so it's before mii_phy_probe().
2005-06-11 01:37:46 +00:00
error = ENOSPC;
goto fail;
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Do MII setup */
if (mii_phy_probe(dev, &sc->rl_miibus,
re_ifmedia_upd, re_ifmedia_sts)) {
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
device_printf(dev, "MII without any phy!\n");
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
error = ENXIO;
goto fail;
}
Make sure to take PHY out of power down mode in device attach. Without this the PHY wouldn't work as expected. This should fix dual-boot Windows XP machine where RealTek Windows drivers put the PHY in power down mode during shutdown. The magic PHY register accesses come from RealTek driver. No datasheets mention the magic PHY registers. In general, the PHY wakeup code should go into PHY driver. However it seems that it only apply to RTL8169S single chip and it would be another hack if we have rgephy(4) check what parent driver/chip model is attached. Reported by: lofi, Laurens Timmermans ( laurens AT timkapel DOT nl ) Tested by: lofi Obtained from: RealTek FreeBSD driver Approved by: re (Ken Smith)
2007-08-14 02:00:04 +00:00
/* Take PHY out of power down mode. */
if (sc->rl_type == RL_8169) {
uint32_t rev;
rev = CSR_READ_4(sc, RL_TXCFG);
/* HWVERID 0, 1 and 2 : bit26-30, bit23 */
rev &= 0x7c800000;
if (rev != 0) {
/* RTL8169S single chip */
switch (rev) {
case RL_HWREV_8169_8110SB:
case RL_HWREV_8169_8110SC:
case RL_HWREV_8168_SPIN2:
Add another RTL8168 revision 3 which is found on RTL8111-GR Gigabit Ethernet Controller. Multicast filtering wasn't tested and needs more expore. While I'm here change complex if statements with switch statement which would improve readability. Reported by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca > Tested by: Abdullah Ibn Hamad Al-Marri < wearabnet AT yahoo DOT ca >
2007-12-08 00:14:09 +00:00
case RL_HWREV_8168_SPIN3:
Make sure to take PHY out of power down mode in device attach. Without this the PHY wouldn't work as expected. This should fix dual-boot Windows XP machine where RealTek Windows drivers put the PHY in power down mode during shutdown. The magic PHY register accesses come from RealTek driver. No datasheets mention the magic PHY registers. In general, the PHY wakeup code should go into PHY driver. However it seems that it only apply to RTL8169S single chip and it would be another hack if we have rgephy(4) check what parent driver/chip model is attached. Reported by: lofi, Laurens Timmermans ( laurens AT timkapel DOT nl ) Tested by: lofi Obtained from: RealTek FreeBSD driver Approved by: re (Ken Smith)
2007-08-14 02:00:04 +00:00
re_gmii_writereg(dev, 1, 0x1f, 0);
re_gmii_writereg(dev, 1, 0x0e, 0);
break;
default:
break;
}
}
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
ifp->if_softc = sc;
Replace the if_name and if_unit members of struct ifnet with new members if_xname, if_dname, and if_dunit. if_xname is the name of the interface and if_dname/unit are the driver name and instance. This change paves the way for interface renaming and enhanced pseudo device creation and configuration symantics. Approved By: re (in principle) Reviewed By: njl, imp Tested On: i386, amd64, sparc64 Obtained From: NetBSD (if_xname)
2003-10-31 18:32:15 +00:00
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = re_ioctl;
ifp->if_start = re_start;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
ifp->if_hwassist = RE_CSUM_FEATURES | CSUM_TSO;
ifp->if_capabilities = IFCAP_HWCSUM | IFCAP_TSO4;
Fix the following bugs in re(4) - Correct the PCI ID for the 8169SC/8110SC in the device list (I added the macro for it to if_rlreg.h before, but forgot to use it.) - Remove the extra interrupt spinlock I added previously. After giving it some more thought, it's not really needed. - Work around a hardware bug in some versions of the 8169. When sending very small IP datagrams with checksum offload enabled, a conflict can occur between the TX autopadding feature and the hardware checksumming that can corrupt the outbound packet. This is the reason that checksum offload sometimes breaks NFS: if you're using NFS over UDP, and you're very unlucky, you might find yourself doing a fragmented NFS write where the last fragment is smaller than the minimum ethernet frame size (60 bytes). (It's rare, but if you keep NFS running long enough it'll happen.) If checksum offload is enabled, the chip will have to both autopad the fragment and calculate its checksum header. This confuses some revs of the 8169, causing the packet that appears on the wire to be corrupted. (The IP addresses and the checksum field are mangled.) This will cause the NFS write to fail. Unfortunately, when NFS retries, it sends the same write request over and over again, and it keeps failing, so NFS stays wedged. (A simple way to provoke the failure is to connect the failing system to a network with a known good machine and do "ping -s 1473 <badhost>" from the good system. The ping will fail.) Someone had previously worked around this using the heavy-handed approahch of just disabling checksum offload. The correct fix is to manually pad short frames where the TCP/IP stack has requested checksum offloading. This allows us to have checksum offload turned on by default but still let NFS work right. - Not a bug, but change the ID strings for devices with hardware rev 0x30000000 and 0x38000000 to both be 8168B/8111B. According to RealTek, they're both the same device, but 0x30000000 is an earlier silicon spin.
2006-07-30 23:25:21 +00:00
ifp->if_capenable = ifp->if_capabilities;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
ifp->if_init = re_init;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
IFQ_SET_MAXLEN(&ifp->if_snd, RL_IFQ_MAXLEN);
ALTQ support for re(4). Submitted by: Chris Dionissopoulos, Theo Schlossnagle PR: kern/78681 MFC after: 2 weeks
2005-03-12 17:35:37 +00:00
ifp->if_snd.ifq_drv_maxlen = RL_IFQ_MAXLEN;
IFQ_SET_READY(&ifp->if_snd);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
TASK_INIT(&sc->rl_txtask, 1, re_tx_task, ifp);
TASK_INIT(&sc->rl_inttask, 0, re_int_task, sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Call MI attach routine.
*/
ether_ifattach(ifp, eaddr);
o Correctly set IFCAP_VLAN_HWCSUM as re(4) can do VLAN tagging/checksum offloading in hardware. o Correctly set media header length for VLAN.
2006-11-21 04:23:52 +00:00
/* VLAN capability setup */
ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING;
if (ifp->if_capabilities & IFCAP_HWCSUM)
ifp->if_capabilities |= IFCAP_VLAN_HWCSUM;
ifp->if_capenable = ifp->if_capabilities;
#ifdef DEVICE_POLLING
ifp->if_capabilities |= IFCAP_POLLING;
#endif
/*
* Tell the upper layer(s) we support long frames.
* Must appear after the call to ether_ifattach() because
* ether_ifattach() sets ifi_hdrlen to the default value.
*/
ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#ifdef RE_DIAG
/*
* Perform hardware diagnostic on the original RTL8169.
* Some 32-bit cards were incorrectly wired and would
* malfunction if plugged into a 64-bit slot.
*/
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if (hwrev == RL_HWREV_8169) {
error = re_diag(sc);
if (error) {
device_printf(dev,
"attach aborted due to hardware diag failure\n");
ether_ifdetach(ifp);
goto fail;
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#endif
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Hook interrupt last to avoid having to lock softc */
Add MSI support. Ever since switching to adaptive polling re(4) occasionally spews watchdog timeouts on systems with MSI capability. This change is minimal one for supporting MSI and re(4) also needs MSIX support for RTL8111C in future. Because softc structure of re(4) is shared with rl(4), rl(4) was touched to use the modified softc. Reported by: cnst Tested by: cnst Approved by: re (kensmith)
2007-07-24 01:24:03 +00:00
if (sc->rl_msi == 0)
error = bus_setup_intr(dev, sc->rl_irq[0],
INTR_TYPE_NET | INTR_MPSAFE, re_intr, NULL, sc,
&sc->rl_intrhand[0]);
else {
for (i = 0; i < RL_MSI_MESSAGES; i++) {
error = bus_setup_intr(dev, sc->rl_irq[i],
INTR_TYPE_NET | INTR_MPSAFE, re_intr, NULL, sc,
&sc->rl_intrhand[i]);
if (error != 0)
break;
}
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (error) {
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
device_printf(dev, "couldn't set up irq\n");
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
ether_ifdetach(ifp);
}
fail:
- Use the re_tick() callout instead of if_slowtimo() for driving re_watchdog() in order to avoid races accessing if_timer. - Use bus_get_dma_tag() so re(4) works on platforms requiring it. - Remove invalid BUS_DMA_ALLOCNOW when creating the parent DMA tag and the tags that are used for static memory allocations. - Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that. - Remove an unused variable in re_intr().
2006-12-20 02:13:59 +00:00
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (error)
re_detach(dev);
return (error);
}
/*
* Shutdown hardware and free up resources. This can be called any
* time after the mutex has been initialized. It is called in both
* the error case in attach and the normal detach case so it needs
* to be careful about only freeing resources that have actually been
* allocated.
*/
static int
re_detach(dev)
device_t dev;
{
struct rl_softc *sc;
struct ifnet *ifp;
Add MSI support. Ever since switching to adaptive polling re(4) occasionally spews watchdog timeouts on systems with MSI capability. This change is minimal one for supporting MSI and re(4) also needs MSIX support for RTL8111C in future. Because softc structure of re(4) is shared with rl(4), rl(4) was touched to use the modified softc. Reported by: cnst Tested by: cnst Approved by: re (kensmith)
2007-07-24 01:24:03 +00:00
int i, rid;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
sc = device_get_softc(dev);
Stop embedding struct ifnet at the top of driver softcs. Instead the struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam
2005-06-10 16:49:24 +00:00
ifp = sc->rl_ifp;
trim trailing white space.. call the re mutex by it's name.. MFC after: 3 days
2004-09-20 06:33:37 +00:00
KASSERT(mtx_initialized(&sc->rl_mtx), ("re mutex not initialized"));
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
/* These should only be active if attach succeeded */
re_detach() fixes: - Fixed if_free() logic screw-up that can either result in freeing a NULL pointer or leaking "struct ifnet". - Move if_free() after re_stop(); the latter accesses "struct ifnet". This bug was masked by a previous bug. - Restore the fix for a panic on detach caused by racing with BPF detach code by Bill by moving ether_ifdetach() after re_stop() and resetting IFF_UP; this got screwed up in revs. 1.30 and 1.36.
2005-09-15 18:59:34 +00:00
if (device_is_attached(dev)) {
RL_LOCK(sc);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
#if 0
re_detach() fixes: - Fixed if_free() logic screw-up that can either result in freeing a NULL pointer or leaking "struct ifnet". - Move if_free() after re_stop(); the latter accesses "struct ifnet". This bug was masked by a previous bug. - Restore the fix for a panic on detach caused by racing with BPF detach code by Bill by moving ether_ifdetach() after re_stop() and resetting IFF_UP; this got screwed up in revs. 1.30 and 1.36.
2005-09-15 18:59:34 +00:00
sc->suspended = 1;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
#endif
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re_stop(sc);
re_detach() fixes: - Fixed if_free() logic screw-up that can either result in freeing a NULL pointer or leaking "struct ifnet". - Move if_free() after re_stop(); the latter accesses "struct ifnet". This bug was masked by a previous bug. - Restore the fix for a panic on detach caused by racing with BPF detach code by Bill by moving ether_ifdetach() after re_stop() and resetting IFF_UP; this got screwed up in revs. 1.30 and 1.36.
2005-09-15 18:59:34 +00:00
RL_UNLOCK(sc);
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
callout_drain(&sc->rl_stat_callout);
Use taskqueue_drain() to wait for any pending tasks to complete rather than just pausing for a second.
2007-02-27 18:45:37 +00:00
taskqueue_drain(taskqueue_fast, &sc->rl_inttask);
taskqueue_drain(taskqueue_fast, &sc->rl_txtask);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Force off the IFF_UP flag here, in case someone
* still had a BPF descriptor attached to this
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
* interface. If they do, ether_ifdetach() will cause
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
* the BPF code to try and clear the promisc mode
* flag, which will bubble down to re_ioctl(),
* which will try to call re_init() again. This will
* turn the NIC back on and restart the MII ticker,
* which will panic the system when the kernel tries
* to invoke the re_tick() function that isn't there
* anymore.
*/
ifp->if_flags &= ~IFF_UP;
re_detach() fixes: - Fixed if_free() logic screw-up that can either result in freeing a NULL pointer or leaking "struct ifnet". - Move if_free() after re_stop(); the latter accesses "struct ifnet". This bug was masked by a previous bug. - Restore the fix for a panic on detach caused by racing with BPF detach code by Bill by moving ether_ifdetach() after re_stop() and resetting IFF_UP; this got screwed up in revs. 1.30 and 1.36.
2005-09-15 18:59:34 +00:00
ether_ifdetach(ifp);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
if (sc->rl_miibus)
device_delete_child(dev, sc->rl_miibus);
bus_generic_detach(dev);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
/*
* The rest is resource deallocation, so we should already be
* stopped here.
*/
Add MSI support. Ever since switching to adaptive polling re(4) occasionally spews watchdog timeouts on systems with MSI capability. This change is minimal one for supporting MSI and re(4) also needs MSIX support for RTL8111C in future. Because softc structure of re(4) is shared with rl(4), rl(4) was touched to use the modified softc. Reported by: cnst Tested by: cnst Approved by: re (kensmith)
2007-07-24 01:24:03 +00:00
for (i = 0; i < RL_MSI_MESSAGES; i++) {
if (sc->rl_intrhand[i] != NULL) {
bus_teardown_intr(dev, sc->rl_irq[i],
sc->rl_intrhand[i]);
sc->rl_intrhand[i] = NULL;
}
}
Make sure that we call if_free(ifp) after bus_teardown_intr. Since we could get an interrupt after we free the ifp, and the interrupt handler depended on the ifp being still alive, this could, in theory, cause a crash. Eliminate this possibility by moving the if_free to after the bus_teardown_intr() call.
2005-09-19 03:10:21 +00:00
if (ifp != NULL)
if_free(ifp);
Add MSI support. Ever since switching to adaptive polling re(4) occasionally spews watchdog timeouts on systems with MSI capability. This change is minimal one for supporting MSI and re(4) also needs MSIX support for RTL8111C in future. Because softc structure of re(4) is shared with rl(4), rl(4) was touched to use the modified softc. Reported by: cnst Tested by: cnst Approved by: re (kensmith)
2007-07-24 01:24:03 +00:00
if (sc->rl_msi == 0) {
if (sc->rl_irq[0] != NULL) {
bus_release_resource(dev, SYS_RES_IRQ, 0,
sc->rl_irq[0]);
sc->rl_irq[0] = NULL;
}
} else {
for (i = 0, rid = 1; i < RL_MSI_MESSAGES; i++, rid++) {
if (sc->rl_irq[i] != NULL) {
bus_release_resource(dev, SYS_RES_IRQ, rid,
sc->rl_irq[i]);
sc->rl_irq[i] = NULL;
}
}
pci_release_msi(dev);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (sc->rl_res)
bus_release_resource(dev, RL_RES, RL_RID, sc->rl_res);
/* Unload and free the RX DMA ring memory and map */
if (sc->rl_ldata.rl_rx_list_tag) {
bus_dmamap_unload(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list_map);
bus_dmamem_free(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list,
sc->rl_ldata.rl_rx_list_map);
bus_dma_tag_destroy(sc->rl_ldata.rl_rx_list_tag);
}
/* Unload and free the TX DMA ring memory and map */
if (sc->rl_ldata.rl_tx_list_tag) {
bus_dmamap_unload(sc->rl_ldata.rl_tx_list_tag,
sc->rl_ldata.rl_tx_list_map);
bus_dmamem_free(sc->rl_ldata.rl_tx_list_tag,
sc->rl_ldata.rl_tx_list,
sc->rl_ldata.rl_tx_list_map);
bus_dma_tag_destroy(sc->rl_ldata.rl_tx_list_tag);
}
/* Destroy all the RX and TX buffer maps */
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (sc->rl_ldata.rl_tx_mtag) {
for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++)
bus_dmamap_destroy(sc->rl_ldata.rl_tx_mtag,
sc->rl_ldata.rl_tx_desc[i].tx_dmamap);
bus_dma_tag_destroy(sc->rl_ldata.rl_tx_mtag);
}
if (sc->rl_ldata.rl_rx_mtag) {
for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++)
bus_dmamap_destroy(sc->rl_ldata.rl_rx_mtag,
sc->rl_ldata.rl_rx_desc[i].rx_dmamap);
if (sc->rl_ldata.rl_rx_sparemap)
bus_dmamap_destroy(sc->rl_ldata.rl_rx_mtag,
sc->rl_ldata.rl_rx_sparemap);
bus_dma_tag_destroy(sc->rl_ldata.rl_rx_mtag);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/* Unload and free the stats buffer and map */
if (sc->rl_ldata.rl_stag) {
bus_dmamap_unload(sc->rl_ldata.rl_stag,
sc->rl_ldata.rl_rx_list_map);
bus_dmamem_free(sc->rl_ldata.rl_stag,
sc->rl_ldata.rl_stats,
sc->rl_ldata.rl_smap);
bus_dma_tag_destroy(sc->rl_ldata.rl_stag);
}
if (sc->rl_parent_tag)
bus_dma_tag_destroy(sc->rl_parent_tag);
mtx_destroy(&sc->rl_mtx);
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
static __inline void
re_discard_rxbuf(sc, idx)
struct rl_softc *sc;
int idx;
{
struct rl_desc *desc;
struct rl_rxdesc *rxd;
uint32_t cmdstat;
rxd = &sc->rl_ldata.rl_rx_desc[idx];
desc = &sc->rl_ldata.rl_rx_list[idx];
desc->rl_vlanctl = 0;
cmdstat = rxd->rx_size;
if (idx == sc->rl_ldata.rl_rx_desc_cnt - 1)
cmdstat |= RL_RDESC_CMD_EOR;
desc->rl_cmdstat = htole32(cmdstat | RL_RDESC_CMD_OWN);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static int
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
re_newbuf(sc, idx)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
struct rl_softc *sc;
int idx;
{
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
struct mbuf *m;
struct rl_rxdesc *rxd;
bus_dma_segment_t segs[1];
bus_dmamap_t map;
struct rl_desc *desc;
uint32_t cmdstat;
int error, nsegs;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
if (m == NULL)
return (ENOBUFS);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
fix jumbo frames as much as they can be fixed for re. We now cap the MTU to 7422 since it appears that the 8169S can't transmit anything larger.. The 8169S can receive full jumbo frames, but we don't have an mru to let the upper layers know this... add fixup so that this driver should work on alignment constrained platforms (!i386 && !amd64) MFC after: 5 days
2004-09-28 18:22:24 +00:00
m->m_len = m->m_pkthdr.len = MCLBYTES;
#ifdef RE_FIXUP_RX
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
fix jumbo frames as much as they can be fixed for re. We now cap the MTU to 7422 since it appears that the 8169S can't transmit anything larger.. The 8169S can receive full jumbo frames, but we don't have an mru to let the upper layers know this... add fixup so that this driver should work on alignment constrained platforms (!i386 && !amd64) MFC after: 5 days
2004-09-28 18:22:24 +00:00
* This is part of an evil trick to deal with non-x86 platforms.
* The RealTek chip requires RX buffers to be aligned on 64-bit
* boundaries, but that will hose non-x86 machines. To get around
* this, we leave some empty space at the start of each buffer
* and for non-x86 hosts, we copy the buffer back six bytes
* to achieve word alignment. This is slightly more efficient
* than allocating a new buffer, copying the contents, and
* discarding the old buffer.
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
*/
fix jumbo frames as much as they can be fixed for re. We now cap the MTU to 7422 since it appears that the 8169S can't transmit anything larger.. The 8169S can receive full jumbo frames, but we don't have an mru to let the upper layers know this... add fixup so that this driver should work on alignment constrained platforms (!i386 && !amd64) MFC after: 5 days
2004-09-28 18:22:24 +00:00
m_adj(m, RE_ETHER_ALIGN);
#endif
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
error = bus_dmamap_load_mbuf_sg(sc->rl_ldata.rl_rx_mtag,
sc->rl_ldata.rl_rx_sparemap, m, segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
m_freem(m);
return (ENOBUFS);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
KASSERT(nsegs == 1, ("%s: %d segment returned!", __func__, nsegs));
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
rxd = &sc->rl_ldata.rl_rx_desc[idx];
if (rxd->rx_m != NULL) {
bus_dmamap_sync(sc->rl_ldata.rl_rx_mtag, rxd->rx_dmamap,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->rl_ldata.rl_rx_mtag, rxd->rx_dmamap);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
rxd->rx_m = m;
map = rxd->rx_dmamap;
rxd->rx_dmamap = sc->rl_ldata.rl_rx_sparemap;
rxd->rx_size = segs[0].ds_len;
sc->rl_ldata.rl_rx_sparemap = map;
bus_dmamap_sync(sc->rl_ldata.rl_rx_mtag, rxd->rx_dmamap,
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
BUS_DMASYNC_PREREAD);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
desc = &sc->rl_ldata.rl_rx_list[idx];
desc->rl_vlanctl = 0;
desc->rl_bufaddr_lo = htole32(RL_ADDR_LO(segs[0].ds_addr));
desc->rl_bufaddr_hi = htole32(RL_ADDR_HI(segs[0].ds_addr));
cmdstat = segs[0].ds_len;
if (idx == sc->rl_ldata.rl_rx_desc_cnt - 1)
cmdstat |= RL_RDESC_CMD_EOR;
desc->rl_cmdstat = htole32(cmdstat | RL_RDESC_CMD_OWN);
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
fix jumbo frames as much as they can be fixed for re. We now cap the MTU to 7422 since it appears that the 8169S can't transmit anything larger.. The 8169S can receive full jumbo frames, but we don't have an mru to let the upper layers know this... add fixup so that this driver should work on alignment constrained platforms (!i386 && !amd64) MFC after: 5 days
2004-09-28 18:22:24 +00:00
#ifdef RE_FIXUP_RX
static __inline void
re_fixup_rx(m)
struct mbuf *m;
{
int i;
uint16_t *src, *dst;
src = mtod(m, uint16_t *);
dst = src - (RE_ETHER_ALIGN - ETHER_ALIGN) / sizeof *src;
for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++)
*dst++ = *src++;
m->m_data -= RE_ETHER_ALIGN - ETHER_ALIGN;
return;
}
#endif
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
static int
re_tx_list_init(sc)
struct rl_softc *sc;
{
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
struct rl_desc *desc;
int i;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK_ASSERT(sc);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
bzero(sc->rl_ldata.rl_tx_list,
sc->rl_ldata.rl_tx_desc_cnt * sizeof(struct rl_desc));
for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++)
sc->rl_ldata.rl_tx_desc[i].tx_m = NULL;
/* Set EOR. */
desc = &sc->rl_ldata.rl_tx_list[sc->rl_ldata.rl_tx_desc_cnt - 1];
desc->rl_cmdstat |= htole32(RL_TDESC_CMD_EOR);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
bus_dmamap_sync(sc->rl_ldata.rl_tx_list_tag,
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
sc->rl_ldata.rl_tx_list_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
sc->rl_ldata.rl_tx_prodidx = 0;
sc->rl_ldata.rl_tx_considx = 0;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
sc->rl_ldata.rl_tx_free = sc->rl_ldata.rl_tx_desc_cnt;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
static int
re_rx_list_init(sc)
struct rl_softc *sc;
{
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
int error, i;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
bzero(sc->rl_ldata.rl_rx_list,
sc->rl_ldata.rl_rx_desc_cnt * sizeof(struct rl_desc));
for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++) {
sc->rl_ldata.rl_rx_desc[i].rx_m = NULL;
if ((error = re_newbuf(sc, i)) != 0)
return (error);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/* Flush the RX descriptors */
bus_dmamap_sync(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list_map,
BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD);
sc->rl_ldata.rl_rx_prodidx = 0;
sc->rl_head = sc->rl_tail = NULL;
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/*
* RX handler for C+ and 8169. For the gigE chips, we support
* the reception of jumbo frames that have been fragmented
* across multiple 2K mbuf cluster buffers.
*/
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
static int
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re_rxeof(sc)
struct rl_softc *sc;
{
struct mbuf *m;
struct ifnet *ifp;
int i, total_len;
struct rl_desc *cur_rx;
u_int32_t rxstat, rxvlan;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
int maxpkt = 16;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Drop the driver lock around calls to if_input to avoid a LOR when the packets are immediately returned for sending (e.g. when bridging or packet forwarding). There are more efficient ways to do this but for now use the least intrusive approach. Reviewed by: imp, rwatson
2003-11-14 19:00:32 +00:00
RL_LOCK_ASSERT(sc);
Stop embedding struct ifnet at the top of driver softcs. Instead the struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam
2005-06-10 16:49:24 +00:00
ifp = sc->rl_ifp;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Invalidate the descriptor memory */
bus_dmamap_sync(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list_map,
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
for (i = sc->rl_ldata.rl_rx_prodidx; maxpkt > 0;
i = RL_RX_DESC_NXT(sc, i)) {
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
cur_rx = &sc->rl_ldata.rl_rx_list[i];
rxstat = le32toh(cur_rx->rl_cmdstat);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if ((rxstat & RL_RDESC_STAT_OWN) != 0)
break;
total_len = rxstat & sc->rl_rxlenmask;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
rxvlan = le32toh(cur_rx->rl_vlanctl);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
m = sc->rl_ldata.rl_rx_desc[i].rx_m;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (!(rxstat & RL_RDESC_STAT_EOF)) {
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (re_newbuf(sc, i) != 0) {
/*
* If this is part of a multi-fragment packet,
* discard all the pieces.
*/
if (sc->rl_head != NULL) {
m_freem(sc->rl_head);
sc->rl_head = sc->rl_tail = NULL;
}
re_discard_rxbuf(sc, i);
continue;
}
fix jumbo frames as much as they can be fixed for re. We now cap the MTU to 7422 since it appears that the 8169S can't transmit anything larger.. The 8169S can receive full jumbo frames, but we don't have an mru to let the upper layers know this... add fixup so that this driver should work on alignment constrained platforms (!i386 && !amd64) MFC after: 5 days
2004-09-28 18:22:24 +00:00
m->m_len = RE_RX_DESC_BUFLEN;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (sc->rl_head == NULL)
sc->rl_head = sc->rl_tail = m;
else {
m->m_flags &= ~M_PKTHDR;
sc->rl_tail->m_next = m;
sc->rl_tail = m;
}
continue;
}
/*
* NOTE: for the 8139C+, the frame length field
* is always 12 bits in size, but for the gigE chips,
* it is 13 bits (since the max RX frame length is 16K).
* Unfortunately, all 32 bits in the status word
* were already used, so to make room for the extra
* length bit, RealTek took out the 'frame alignment
* error' bit and shifted the other status bits
* over one slot. The OWN, EOR, FS and LS bits are
* still in the same places. We have already extracted
* the frame length and checked the OWN bit, so rather
* than using an alternate bit mapping, we shift the
* status bits one space to the right so we can evaluate
* them using the 8169 status as though it was in the
* same format as that of the 8139C+.
*/
if (sc->rl_type == RL_8169)
rxstat >>= 1;
fix jumbo frames as much as they can be fixed for re. We now cap the MTU to 7422 since it appears that the 8169S can't transmit anything larger.. The 8169S can receive full jumbo frames, but we don't have an mru to let the upper layers know this... add fixup so that this driver should work on alignment constrained platforms (!i386 && !amd64) MFC after: 5 days
2004-09-28 18:22:24 +00:00
/*
* if total_len > 2^13-1, both _RXERRSUM and _GIANT will be
* set, but if CRC is clear, it will still be a valid frame.
*/
if (rxstat & RL_RDESC_STAT_RXERRSUM && !(total_len > 8191 &&
(rxstat & RL_RDESC_STAT_ERRS) == RL_RDESC_STAT_GIANT)) {
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
ifp->if_ierrors++;
/*
* If this is part of a multi-fragment packet,
* discard all the pieces.
*/
if (sc->rl_head != NULL) {
m_freem(sc->rl_head);
sc->rl_head = sc->rl_tail = NULL;
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
re_discard_rxbuf(sc, i);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
continue;
}
/*
* If allocating a replacement mbuf fails,
* reload the current one.
*/
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (re_newbuf(sc, i) != 0) {
ifp->if_iqdrops++;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (sc->rl_head != NULL) {
m_freem(sc->rl_head);
sc->rl_head = sc->rl_tail = NULL;
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
re_discard_rxbuf(sc, i);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
continue;
}
if (sc->rl_head != NULL) {
fix jumbo frames as much as they can be fixed for re. We now cap the MTU to 7422 since it appears that the 8169S can't transmit anything larger.. The 8169S can receive full jumbo frames, but we don't have an mru to let the upper layers know this... add fixup so that this driver should work on alignment constrained platforms (!i386 && !amd64) MFC after: 5 days
2004-09-28 18:22:24 +00:00
m->m_len = total_len % RE_RX_DESC_BUFLEN;
if (m->m_len == 0)
m->m_len = RE_RX_DESC_BUFLEN;
Whitespace pass
2004-07-06 02:46:53 +00:00
/*
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
* Special case: if there's 4 bytes or less
* in this buffer, the mbuf can be discarded:
* the last 4 bytes is the CRC, which we don't
* care about anyway.
*/
if (m->m_len <= ETHER_CRC_LEN) {
sc->rl_tail->m_len -=
(ETHER_CRC_LEN - m->m_len);
m_freem(m);
} else {
m->m_len -= ETHER_CRC_LEN;
m->m_flags &= ~M_PKTHDR;
sc->rl_tail->m_next = m;
}
m = sc->rl_head;
sc->rl_head = sc->rl_tail = NULL;
m->m_pkthdr.len = total_len - ETHER_CRC_LEN;
} else
m->m_pkthdr.len = m->m_len =
(total_len - ETHER_CRC_LEN);
fix jumbo frames as much as they can be fixed for re. We now cap the MTU to 7422 since it appears that the 8169S can't transmit anything larger.. The 8169S can receive full jumbo frames, but we don't have an mru to let the upper layers know this... add fixup so that this driver should work on alignment constrained platforms (!i386 && !amd64) MFC after: 5 days
2004-09-28 18:22:24 +00:00
#ifdef RE_FIXUP_RX
re_fixup_rx(m);
#endif
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
ifp->if_ipackets++;
m->m_pkthdr.rcvif = ifp;
/* Do RX checksumming if enabled */
if (ifp->if_capenable & IFCAP_RXCSUM) {
/* Check IP header checksum */
if (rxstat & RL_RDESC_STAT_PROTOID)
m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED;
if (!(rxstat & RL_RDESC_STAT_IPSUMBAD))
m->m_pkthdr.csum_flags |= CSUM_IP_VALID;
/* Check TCP/UDP checksum */
if ((RL_TCPPKT(rxstat) &&
!(rxstat & RL_RDESC_STAT_TCPSUMBAD)) ||
(RL_UDPPKT(rxstat) &&
!(rxstat & RL_RDESC_STAT_UDPSUMBAD))) {
m->m_pkthdr.csum_flags |=
CSUM_DATA_VALID|CSUM_PSEUDO_HDR;
m->m_pkthdr.csum_data = 0xffff;
}
}
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
maxpkt--;
- Fix VLAN_INPUT_TAG() macro, so that it doesn't touch mtag in case if memory allocation failed. - Remove fourth argument from VLAN_INPUT_TAG(), that was used incorrectly in almost all drivers. Indicate failure with mbuf value of NULL. In collaboration with: yongari, ru, sam
2005-12-18 18:24:27 +00:00
if (rxvlan & RL_RDESC_VLANCTL_TAG) {
Move ethernet VLAN tags from mtags to its own mbuf packet header field m_pkthdr.ether_vlan. The presence of the M_VLANTAG flag on the mbuf signifies the presence and validity of its content. Drivers that support hardware VLAN tag stripping fill in the received VLAN tag (containing both vlan and priority information) into the ether_vtag mbuf packet header field: m->m_pkthdr.ether_vtag = vlan_id; /* ntohs()? */ m->m_flags |= M_VLANTAG; to mark the packet m with the specified VLAN tag. On output the driver should check the mbuf for the M_VLANTAG flag to see if a VLAN tag is present and valid: if (m->m_flags & M_VLANTAG) { ... = m->m_pkthdr.ether_vtag; /* htons()? */ ... pass tag to hardware ... } VLAN tags are stored in host byte order. Byte swapping may be necessary. (Note: This driver conversion was mechanic and did not add or remove any byte swapping in the drivers.) Remove zone_mtag_vlan UMA zone and MTAG_VLAN definition. No more tag memory allocation have to be done. Reviewed by: thompsa, yar Sponsored by: TCP/IP Optimization Fundraise 2005
2006-09-17 13:33:30 +00:00
m->m_pkthdr.ether_vtag =
ntohs((rxvlan & RL_RDESC_VLANCTL_DATA));
m->m_flags |= M_VLANTAG;
- Fix VLAN_INPUT_TAG() macro, so that it doesn't touch mtag in case if memory allocation failed. - Remove fourth argument from VLAN_INPUT_TAG(), that was used incorrectly in almost all drivers. Indicate failure with mbuf value of NULL. In collaboration with: yongari, ru, sam
2005-12-18 18:24:27 +00:00
}
Drop the driver lock around calls to if_input to avoid a LOR when the packets are immediately returned for sending (e.g. when bridging or packet forwarding). There are more efficient ways to do this but for now use the least intrusive approach. Reviewed by: imp, rwatson
2003-11-14 19:00:32 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
(*ifp->if_input)(ifp, m);
Drop the driver lock around calls to if_input to avoid a LOR when the packets are immediately returned for sending (e.g. when bridging or packet forwarding). There are more efficient ways to do this but for now use the least intrusive approach. Reviewed by: imp, rwatson
2003-11-14 19:00:32 +00:00
RL_LOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/* Flush the RX DMA ring */
bus_dmamap_sync(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list_map,
BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD);
sc->rl_ldata.rl_rx_prodidx = i;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if (maxpkt)
return(EAGAIN);
return(0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
static void
re_txeof(sc)
struct rl_softc *sc;
{
struct ifnet *ifp;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
struct rl_txdesc *txd;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
u_int32_t txstat;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
int cons;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
cons = sc->rl_ldata.rl_tx_considx;
if (cons == sc->rl_ldata.rl_tx_prodidx)
return;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
ifp = sc->rl_ifp;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Invalidate the TX descriptor list */
bus_dmamap_sync(sc->rl_ldata.rl_tx_list_tag,
sc->rl_ldata.rl_tx_list_map,
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
for (; cons != sc->rl_ldata.rl_tx_prodidx;
cons = RL_TX_DESC_NXT(sc, cons)) {
txstat = le32toh(sc->rl_ldata.rl_tx_list[cons].rl_cmdstat);
if (txstat & RL_TDESC_STAT_OWN)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
break;
/*
* We only stash mbufs in the last descriptor
* in a fragment chain, which also happens to
* be the only place where the TX status bits
* are valid.
*/
if (txstat & RL_TDESC_CMD_EOF) {
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
txd = &sc->rl_ldata.rl_tx_desc[cons];
bus_dmamap_sync(sc->rl_ldata.rl_tx_mtag,
txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->rl_ldata.rl_tx_mtag,
txd->tx_dmamap);
KASSERT(txd->tx_m != NULL,
("%s: freeing NULL mbufs!", __func__));
m_freem(txd->tx_m);
txd->tx_m = NULL;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (txstat & (RL_TDESC_STAT_EXCESSCOL|
RL_TDESC_STAT_COLCNT))
ifp->if_collisions++;
if (txstat & RL_TDESC_STAT_TXERRSUM)
ifp->if_oerrors++;
else
ifp->if_opackets++;
}
sc->rl_ldata.rl_tx_free++;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
sc->rl_ldata.rl_tx_considx = cons;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* No changes made to the TX ring, so no flush needed */
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (sc->rl_ldata.rl_tx_free != sc->rl_ldata.rl_tx_desc_cnt) {
o In re_newbuf() and re_encap() if re_dma_map_desc() aborts the mapping operation as it ran out of free descriptors or if there are too many segments in the first place, call bus_dmamap_unload() in order to unload the already loaded segments. For trying to map the defragmented mbuf (chain) in re_encap() this introduces re_dma_map_desc() setting arg.rl_maxsegs to 0 as a new failure mode. Previously we just ignored this case, corrupting our view of the TX ring. o In re_txeof(): - Don't clear IFF_DRV_OACTIVE unless there are at least 4 free TX descriptors. Further down the road re_encap() will bail if there aren't at least 4 free TX descriptors, causing re_start() to abort and prepend the dequeued mbuf again so it makes no sense to pretend we could process mbufs again when in fact we won't. While at it replace this magic 4 with a macro RL_TX_DESC_THLD throughout this driver. - Don't cancel the watchdog timeout as soon as there's at least one free TX descriptor but instead only if all descriptors have been handled. It's perfectly normal, especially in the DEVICE_POLLING case, that re_txeof() is called when only a part of the enqueued TX descriptors have been handled, causing the watchdog to be disarmed prematurely. o In re_encap(): - If m_defrag() fails just drop the packet like other NIC drivers do. This should only happen when there's a mbuf shortage, in which case it was possible to end up with an IFQ full of packets which couldn't be processed as they couldn't be defragmented as they were taking up all the mbufs themselves. This includes adjusting re_start() to not trying to prepend the mbuf (chain) if re_encap() has freed it. - Remove dupe initialization of members of struct rl_dmaload_arg to values that didn't change since trying to process the fragmented mbuf chain. While at it remove an unused member from struct rl_dmaload_arg. o In re_start() remove a abandoned, banal comment. The corresponding code was moved to re_attach() some time ago. With these changes re(4) now survives one day (until stopped) of hammering out packets here. Reviewed by: yongari MFC after: 2 weeks
2007-01-16 20:35:23 +00:00
/*
* Some chips will ignore a second TX request issued
* while an existing transmission is in progress. If
* the transmitter goes idle but there are still
* packets waiting to be sent, we need to restart the
* channel here to flush them out. This only seems to
* be required with the PCIe devices.
*/
CSR_WRITE_1(sc, sc->rl_txstart, RL_TXSTART_START);
Another small update to the re(4) driver: - Change the workaround for the autopad/checksum offload bug so that instead of lying about the map size, we actually create a properly padded mbuf and map it as usual. The other trick works, but is ugly. This approach also gives us a chance to zero the pad space to avoid possibly leaking data. - With the PCIe devices, it looks issuing a TX command while there's already a transmission in progress doesn't have any effect. In other words, if you send two packets in rapid succession, the second one may end up sitting in the TX DMA ring until another transmit command is issued later in the future. Basically, if re_txeof() sees that there are still descriptors outstanding, it needs to manually resume the TX DMA channel by issuing another TX command to make sure all transmissions are flushed out. (The PCI devices seem to keep the TX channel moving until all descriptors have been consumed. I'm not sure why the PCIe devices behave differently.) (You can see this issue if you do the following test: plug an re(4) interface into another host via crossover cable, and from the other host do 'ping -c 2 <host with re(4) NIC>' to prime the ARP cache, then do 'ping -c 1 -s 1473 <host with re(4) NIC>'. You're supposed to see two packets sent in response, but you may only see one. If you do 'ping -c 1 -s 1473 <host with re(4) NIC>' again, you'll see two packets, but one will be the missing fragment from the last ping, followed by one of the fragments from this ping.) - Add the PCI ID for the US Robotics 997902 NIC, which is based on the RTL8169S. - Add a tsleep() of 1 second in re_detach() after the interrupt handler is disconnected. This should allow any tasks queued up by the ISR to drain. Now, I know you're supposed to use taskqueue_drain() for this, but something about the way taskqueue_drain() works with taskqueue_fast queues doesn't seem quite right, and I refuse to be tricked into fixing it.
2006-08-01 17:18:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#ifdef RE_TX_MODERATION
o In re_newbuf() and re_encap() if re_dma_map_desc() aborts the mapping operation as it ran out of free descriptors or if there are too many segments in the first place, call bus_dmamap_unload() in order to unload the already loaded segments. For trying to map the defragmented mbuf (chain) in re_encap() this introduces re_dma_map_desc() setting arg.rl_maxsegs to 0 as a new failure mode. Previously we just ignored this case, corrupting our view of the TX ring. o In re_txeof(): - Don't clear IFF_DRV_OACTIVE unless there are at least 4 free TX descriptors. Further down the road re_encap() will bail if there aren't at least 4 free TX descriptors, causing re_start() to abort and prepend the dequeued mbuf again so it makes no sense to pretend we could process mbufs again when in fact we won't. While at it replace this magic 4 with a macro RL_TX_DESC_THLD throughout this driver. - Don't cancel the watchdog timeout as soon as there's at least one free TX descriptor but instead only if all descriptors have been handled. It's perfectly normal, especially in the DEVICE_POLLING case, that re_txeof() is called when only a part of the enqueued TX descriptors have been handled, causing the watchdog to be disarmed prematurely. o In re_encap(): - If m_defrag() fails just drop the packet like other NIC drivers do. This should only happen when there's a mbuf shortage, in which case it was possible to end up with an IFQ full of packets which couldn't be processed as they couldn't be defragmented as they were taking up all the mbufs themselves. This includes adjusting re_start() to not trying to prepend the mbuf (chain) if re_encap() has freed it. - Remove dupe initialization of members of struct rl_dmaload_arg to values that didn't change since trying to process the fragmented mbuf chain. While at it remove an unused member from struct rl_dmaload_arg. o In re_start() remove a abandoned, banal comment. The corresponding code was moved to re_attach() some time ago. With these changes re(4) now survives one day (until stopped) of hammering out packets here. Reviewed by: yongari MFC after: 2 weeks
2007-01-16 20:35:23 +00:00
/*
* If not all descriptors have been reaped yet, reload
* the timer so that we will eventually get another
* interrupt that will cause us to re-enter this routine.
* This is done in case the transmitter has gone idle.
*/
Whitespace pass
2004-07-06 02:46:53 +00:00
CSR_WRITE_4(sc, RL_TIMERCNT, 1);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#endif
o In re_newbuf() and re_encap() if re_dma_map_desc() aborts the mapping operation as it ran out of free descriptors or if there are too many segments in the first place, call bus_dmamap_unload() in order to unload the already loaded segments. For trying to map the defragmented mbuf (chain) in re_encap() this introduces re_dma_map_desc() setting arg.rl_maxsegs to 0 as a new failure mode. Previously we just ignored this case, corrupting our view of the TX ring. o In re_txeof(): - Don't clear IFF_DRV_OACTIVE unless there are at least 4 free TX descriptors. Further down the road re_encap() will bail if there aren't at least 4 free TX descriptors, causing re_start() to abort and prepend the dequeued mbuf again so it makes no sense to pretend we could process mbufs again when in fact we won't. While at it replace this magic 4 with a macro RL_TX_DESC_THLD throughout this driver. - Don't cancel the watchdog timeout as soon as there's at least one free TX descriptor but instead only if all descriptors have been handled. It's perfectly normal, especially in the DEVICE_POLLING case, that re_txeof() is called when only a part of the enqueued TX descriptors have been handled, causing the watchdog to be disarmed prematurely. o In re_encap(): - If m_defrag() fails just drop the packet like other NIC drivers do. This should only happen when there's a mbuf shortage, in which case it was possible to end up with an IFQ full of packets which couldn't be processed as they couldn't be defragmented as they were taking up all the mbufs themselves. This includes adjusting re_start() to not trying to prepend the mbuf (chain) if re_encap() has freed it. - Remove dupe initialization of members of struct rl_dmaload_arg to values that didn't change since trying to process the fragmented mbuf chain. While at it remove an unused member from struct rl_dmaload_arg. o In re_start() remove a abandoned, banal comment. The corresponding code was moved to re_attach() some time ago. With these changes re(4) now survives one day (until stopped) of hammering out packets here. Reviewed by: yongari MFC after: 2 weeks
2007-01-16 20:35:23 +00:00
} else
sc->rl_watchdog_timer = 0;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
static void
re_tick(xsc)
void *xsc;
{
struct rl_softc *sc;
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
struct mii_data *mii;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
struct ifnet *ifp;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
sc = xsc;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
ifp = sc->rl_ifp;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK_ASSERT(sc);
- Use the re_tick() callout instead of if_slowtimo() for driving re_watchdog() in order to avoid races accessing if_timer. - Use bus_get_dma_tag() so re(4) works on platforms requiring it. - Remove invalid BUS_DMA_ALLOCNOW when creating the parent DMA tag and the tags that are used for static memory allocations. - Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that. - Remove an unused variable in re_intr().
2006-12-20 02:13:59 +00:00
re_watchdog(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
- Use the re_tick() callout instead of if_slowtimo() for driving re_watchdog() in order to avoid races accessing if_timer. - Use bus_get_dma_tag() so re(4) works on platforms requiring it. - Remove invalid BUS_DMA_ALLOCNOW when creating the parent DMA tag and the tags that are used for static memory allocations. - Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that. - Remove an unused variable in re_intr().
2006-12-20 02:13:59 +00:00
mii = device_get_softc(sc->rl_miibus);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
mii_tick(mii);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if (sc->rl_link) {
if (!(mii->mii_media_status & IFM_ACTIVE))
sc->rl_link = 0;
} else {
if (mii->mii_media_status & IFM_ACTIVE &&
IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) {
sc->rl_link = 1;
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
taskqueue_enqueue_fast(taskqueue_fast,
&sc->rl_txtask);
}
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
callout_reset(&sc->rl_stat_callout, hz, re_tick, sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
#ifdef DEVICE_POLLING
static void
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
re_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
{
struct rl_softc *sc = ifp->if_softc;
RL_LOCK(sc);
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
re_poll_locked(ifp, cmd, count);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_UNLOCK(sc);
}
static void
re_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count)
{
struct rl_softc *sc = ifp->if_softc;
RL_LOCK_ASSERT(sc);
trim trailing white space.. call the re mutex by it's name.. MFC after: 3 days
2004-09-20 06:33:37 +00:00
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
sc->rxcycles = count;
re_rxeof(sc);
re_txeof(sc);
Unbreak build with POLLING. I should really listen and test with NOTES instead of the module build.
2005-03-13 01:54:41 +00:00
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_txtask);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (cmd == POLL_AND_CHECK_STATUS) { /* also check status register */
u_int16_t status;
status = CSR_READ_2(sc, RL_ISR);
if (status == 0xffff)
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
return;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (status)
CSR_WRITE_2(sc, RL_ISR, status);
/*
* XXX check behaviour on receiver stalls.
*/
if (status & RL_ISR_SYSTEM_ERR) {
re_reset(sc);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
re_init_locked(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
}
}
#endif /* DEVICE_POLLING */
o break newbus api: add a new argument of type driver_filter_t to bus_setup_intr() o add an int return code to all fast handlers o retire INTR_FAST/IH_FAST For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current Reviewed by: many Approved by: re@
2007-02-23 12:19:07 +00:00
static int
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re_intr(arg)
void *arg;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
{
struct rl_softc *sc;
uint16_t status;
sc = arg;
status = CSR_READ_2(sc, RL_ISR);
Fix the following bugs in re(4) - Correct the PCI ID for the 8169SC/8110SC in the device list (I added the macro for it to if_rlreg.h before, but forgot to use it.) - Remove the extra interrupt spinlock I added previously. After giving it some more thought, it's not really needed. - Work around a hardware bug in some versions of the 8169. When sending very small IP datagrams with checksum offload enabled, a conflict can occur between the TX autopadding feature and the hardware checksumming that can corrupt the outbound packet. This is the reason that checksum offload sometimes breaks NFS: if you're using NFS over UDP, and you're very unlucky, you might find yourself doing a fragmented NFS write where the last fragment is smaller than the minimum ethernet frame size (60 bytes). (It's rare, but if you keep NFS running long enough it'll happen.) If checksum offload is enabled, the chip will have to both autopad the fragment and calculate its checksum header. This confuses some revs of the 8169, causing the packet that appears on the wire to be corrupted. (The IP addresses and the checksum field are mangled.) This will cause the NFS write to fail. Unfortunately, when NFS retries, it sends the same write request over and over again, and it keeps failing, so NFS stays wedged. (A simple way to provoke the failure is to connect the failing system to a network with a known good machine and do "ping -s 1473 <badhost>" from the good system. The ping will fail.) Someone had previously worked around this using the heavy-handed approahch of just disabling checksum offload. The correct fix is to manually pad short frames where the TCP/IP stack has requested checksum offloading. This allows us to have checksum offload turned on by default but still let NFS work right. - Not a bug, but change the ID strings for devices with hardware rev 0x30000000 and 0x38000000 to both be 8168B/8111B. According to RealTek, they're both the same device, but 0x30000000 is an earlier silicon spin.
2006-07-30 23:25:21 +00:00
if (status == 0xFFFF || (status & RL_INTRS_CPLUS) == 0)
o break newbus api: add a new argument of type driver_filter_t to bus_setup_intr() o add an int return code to all fast handlers o retire INTR_FAST/IH_FAST For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current Reviewed by: many Approved by: re@
2007-02-23 12:19:07 +00:00
return (FILTER_STRAY);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_WRITE_2(sc, RL_IMR, 0);
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_inttask);
o break newbus api: add a new argument of type driver_filter_t to bus_setup_intr() o add an int return code to all fast handlers o retire INTR_FAST/IH_FAST For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current Reviewed by: many Approved by: re@
2007-02-23 12:19:07 +00:00
return (FILTER_HANDLED);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
}
static void
re_int_task(arg, npending)
void *arg;
int npending;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
{
struct rl_softc *sc;
struct ifnet *ifp;
u_int16_t status;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
int rval = 0;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
sc = arg;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
ifp = sc->rl_ifp;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
RL_LOCK(sc);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
status = CSR_READ_2(sc, RL_ISR);
CSR_WRITE_2(sc, RL_ISR, status);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (sc->suspended ||
(ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
RL_UNLOCK(sc);
return;
}
Add a PHY driver to support the built-in gigE PHY in the 8169S/8110S ethernet chips. This driver is pretty simple, however it contains special DSP initialization code which is needed in order to get the chip to negotiate a gigE link. (This special initialization may not be needed in subsequent chip revs.) Also: - Fix typo in if_rlreg.h (RL_GMEDIASTAT_1000MPS -> RL_GMEDIASTAT_1000MBPS) - Deal with shared interrupts in re_intr(): if interface isn't up, return. - Fix another bug in re_gmii_writereg() (properly apply data field mask) - Allow PHY driver to read the RL_GMEDIASTAT register via the re_gmii_readreg() register (this is register needed to determine real time link/media status).
2003-09-11 03:53:46 +00:00
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
#ifdef DEVICE_POLLING
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if (ifp->if_capenable & IFCAP_POLLING) {
RL_UNLOCK(sc);
return;
}
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
#endif
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if (status & (RL_ISR_RX_OK|RL_ISR_RX_ERR|RL_ISR_FIFO_OFLOW))
rval = re_rxeof(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#ifdef RE_TX_MODERATION
if (status & (RL_ISR_TIMEOUT_EXPIRED|
#else
if (status & (RL_ISR_TX_OK|
#endif
RL_ISR_TX_ERR|RL_ISR_TX_DESC_UNAVAIL))
re_txeof(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if (status & RL_ISR_SYSTEM_ERR) {
re_reset(sc);
re_init_locked(sc);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if (status & RL_ISR_LINKCHG) {
callout_stop(&sc->rl_stat_callout);
re_tick(sc);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_txtask);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if ((CSR_READ_2(sc, RL_ISR) & RL_INTRS_CPLUS) || rval) {
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_inttask);
return;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_WRITE_2(sc, RL_IMR, RL_INTRS_CPLUS);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
return;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
/*
* It's copy of ath_defrag(ath(4)).
*
* Defragment an mbuf chain, returning at most maxfrags separate
* mbufs+clusters. If this is not possible NULL is returned and
* the original mbuf chain is left in it's present (potentially
* modified) state. We use two techniques: collapsing consecutive
* mbufs and replacing consecutive mbufs by a cluster.
*/
static struct mbuf *
re_defrag(m0, how, maxfrags)
struct mbuf *m0;
int how;
int maxfrags;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
{
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
struct mbuf *m, *n, *n2, **prev;
u_int curfrags;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
* Calculate the current number of frags.
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
*/
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
curfrags = 0;
for (m = m0; m != NULL; m = m->m_next)
curfrags++;
/*
* First, try to collapse mbufs. Note that we always collapse
* towards the front so we don't need to deal with moving the
* pkthdr. This may be suboptimal if the first mbuf has much
* less data than the following.
*/
m = m0;
again:
for (;;) {
n = m->m_next;
if (n == NULL)
break;
if ((m->m_flags & M_RDONLY) == 0 &&
n->m_len < M_TRAILINGSPACE(m)) {
bcopy(mtod(n, void *), mtod(m, char *) + m->m_len,
n->m_len);
m->m_len += n->m_len;
m->m_next = n->m_next;
m_free(n);
if (--curfrags <= maxfrags)
return (m0);
} else
m = n;
Add TSO support. Tested by: wilko, Pieter de Goeje < pieter AT degoeje DOT nl >
2006-11-21 04:40:30 +00:00
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
KASSERT(maxfrags > 1,
("maxfrags %u, but normal collapse failed", maxfrags));
/*
* Collapse consecutive mbufs to a cluster.
*/
prev = &m0->m_next; /* NB: not the first mbuf */
while ((n = *prev) != NULL) {
if ((n2 = n->m_next) != NULL &&
n->m_len + n2->m_len < MCLBYTES) {
m = m_getcl(how, MT_DATA, 0);
if (m == NULL)
goto bad;
bcopy(mtod(n, void *), mtod(m, void *), n->m_len);
bcopy(mtod(n2, void *), mtod(m, char *) + n->m_len,
n2->m_len);
m->m_len = n->m_len + n2->m_len;
m->m_next = n2->m_next;
*prev = m;
m_free(n);
m_free(n2);
if (--curfrags <= maxfrags) /* +1 cl -2 mbufs */
return m0;
/*
* Still not there, try the normal collapse
* again before we allocate another cluster.
*/
goto again;
}
prev = &n->m_next;
}
/*
* No place where we can collapse to a cluster; punt.
* This can occur if, for example, you request 2 frags
* but the packet requires that both be clusters (we
* never reallocate the first mbuf to avoid moving the
* packet header).
*/
bad:
return (NULL);
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
static int
re_encap(sc, m_head)
struct rl_softc *sc;
struct mbuf **m_head;
{
struct rl_txdesc *txd, *txd_last;
bus_dma_segment_t segs[RL_NTXSEGS];
bus_dmamap_t map;
struct mbuf *m_new;
struct rl_desc *desc;
int nsegs, prod;
int i, error, ei, si;
int padlen;
uint32_t cmdstat, csum_flags;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
RL_LOCK_ASSERT(sc);
M_ASSERTPKTHDR(*m_head);
Another small update to the re(4) driver: - Change the workaround for the autopad/checksum offload bug so that instead of lying about the map size, we actually create a properly padded mbuf and map it as usual. The other trick works, but is ugly. This approach also gives us a chance to zero the pad space to avoid possibly leaking data. - With the PCIe devices, it looks issuing a TX command while there's already a transmission in progress doesn't have any effect. In other words, if you send two packets in rapid succession, the second one may end up sitting in the TX DMA ring until another transmit command is issued later in the future. Basically, if re_txeof() sees that there are still descriptors outstanding, it needs to manually resume the TX DMA channel by issuing another TX command to make sure all transmissions are flushed out. (The PCI devices seem to keep the TX channel moving until all descriptors have been consumed. I'm not sure why the PCIe devices behave differently.) (You can see this issue if you do the following test: plug an re(4) interface into another host via crossover cable, and from the other host do 'ping -c 2 <host with re(4) NIC>' to prime the ARP cache, then do 'ping -c 1 -s 1473 <host with re(4) NIC>'. You're supposed to see two packets sent in response, but you may only see one. If you do 'ping -c 1 -s 1473 <host with re(4) NIC>' again, you'll see two packets, but one will be the missing fragment from the last ping, followed by one of the fragments from this ping.) - Add the PCI ID for the US Robotics 997902 NIC, which is based on the RTL8169S. - Add a tsleep() of 1 second in re_detach() after the interrupt handler is disconnected. This should allow any tasks queued up by the ISR to drain. Now, I know you're supposed to use taskqueue_drain() for this, but something about the way taskqueue_drain() works with taskqueue_fast queues doesn't seem quite right, and I refuse to be tricked into fixing it.
2006-08-01 17:18:25 +00:00
/*
* With some of the RealTek chips, using the checksum offload
* support in conjunction with the autopadding feature results
* in the transmission of corrupt frames. For example, if we
* need to send a really small IP fragment that's less than 60
* bytes in size, and IP header checksumming is enabled, the
* resulting ethernet frame that appears on the wire will
* have garbled payload. To work around this, if TX checksum
* offload is enabled, we always manually pad short frames out
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
* to the minimum ethernet frame size.
The TCP checksum offload handling in the 8111B/8168B and 8101E PCIe can apparently be confused by short TCP segments that have been manually padded to the minimum ethernet frame size. The driver does short frame padding in software as a workaround for a bug in the 8169 PCI devices that causes short IP fragments to be corrupted due to an apparent conflict between the hardware autopadding and hardware IP checksumming. To fix this, we avoid software padding for short TCP segments, since the hardware seems to autopad and checksum these correctly (even the older 8169 NICs get these right). Short UDP packets appear to be handled correctly in all cases. This should work around the IP header checksum bug in the 8169 while not tripping the TCP checksum bug in the 8111B/8168B and 8101E.
2007-01-25 17:30:30 +00:00
*
* Note: this appears unnecessary for TCP, and doing it for TCP
* with PCIe adapters seems to result in bad checksums.
Another small update to the re(4) driver: - Change the workaround for the autopad/checksum offload bug so that instead of lying about the map size, we actually create a properly padded mbuf and map it as usual. The other trick works, but is ugly. This approach also gives us a chance to zero the pad space to avoid possibly leaking data. - With the PCIe devices, it looks issuing a TX command while there's already a transmission in progress doesn't have any effect. In other words, if you send two packets in rapid succession, the second one may end up sitting in the TX DMA ring until another transmit command is issued later in the future. Basically, if re_txeof() sees that there are still descriptors outstanding, it needs to manually resume the TX DMA channel by issuing another TX command to make sure all transmissions are flushed out. (The PCI devices seem to keep the TX channel moving until all descriptors have been consumed. I'm not sure why the PCIe devices behave differently.) (You can see this issue if you do the following test: plug an re(4) interface into another host via crossover cable, and from the other host do 'ping -c 2 <host with re(4) NIC>' to prime the ARP cache, then do 'ping -c 1 -s 1473 <host with re(4) NIC>'. You're supposed to see two packets sent in response, but you may only see one. If you do 'ping -c 1 -s 1473 <host with re(4) NIC>' again, you'll see two packets, but one will be the missing fragment from the last ping, followed by one of the fragments from this ping.) - Add the PCI ID for the US Robotics 997902 NIC, which is based on the RTL8169S. - Add a tsleep() of 1 second in re_detach() after the interrupt handler is disconnected. This should allow any tasks queued up by the ISR to drain. Now, I know you're supposed to use taskqueue_drain() for this, but something about the way taskqueue_drain() works with taskqueue_fast queues doesn't seem quite right, and I refuse to be tricked into fixing it.
2006-08-01 17:18:25 +00:00
*/
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if ((*m_head)->m_pkthdr.csum_flags & (CSUM_IP | CSUM_UDP) &&
((*m_head)->m_pkthdr.csum_flags & CSUM_TCP) == 0 &&
(*m_head)->m_pkthdr.len < RL_MIN_FRAMELEN) {
padlen = RL_MIN_FRAMELEN - (*m_head)->m_pkthdr.len;
if (M_WRITABLE(*m_head) == 0) {
/* Get a writable copy. */
m_new = m_dup(*m_head, M_DONTWAIT);
m_freem(*m_head);
if (m_new == NULL) {
*m_head = NULL;
return (ENOBUFS);
}
*m_head = m_new;
}
if ((*m_head)->m_next != NULL ||
M_TRAILINGSPACE(*m_head) < padlen) {
m_new = m_defrag(*m_head, M_DONTWAIT);
if (m_new == NULL) {
m_freem(*m_head);
*m_head = NULL;
return (ENOBUFS);
}
} else
m_new = *m_head;
The TCP checksum offload handling in the 8111B/8168B and 8101E PCIe can apparently be confused by short TCP segments that have been manually padded to the minimum ethernet frame size. The driver does short frame padding in software as a workaround for a bug in the 8169 PCI devices that causes short IP fragments to be corrupted due to an apparent conflict between the hardware autopadding and hardware IP checksumming. To fix this, we avoid software padding for short TCP segments, since the hardware seems to autopad and checksum these correctly (even the older 8169 NICs get these right). Short UDP packets appear to be handled correctly in all cases. This should work around the IP header checksum bug in the 8169 while not tripping the TCP checksum bug in the 8111B/8168B and 8101E.
2007-01-25 17:30:30 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
/*
* Manually pad short frames, and zero the pad space
* to avoid leaking data.
*/
bzero(mtod(m_new, char *) + m_new->m_pkthdr.len, padlen);
m_new->m_pkthdr.len += padlen;
m_new->m_len = m_new->m_pkthdr.len;
*m_head = m_new;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
prod = sc->rl_ldata.rl_tx_prodidx;
txd = &sc->rl_ldata.rl_tx_desc[prod];
error = bus_dmamap_load_mbuf_sg(sc->rl_ldata.rl_tx_mtag, txd->tx_dmamap,
*m_head, segs, &nsegs, BUS_DMA_NOWAIT);
if (error == EFBIG) {
m_new = re_defrag(*m_head, M_DONTWAIT, RL_NTXSEGS);
o In re_newbuf() and re_encap() if re_dma_map_desc() aborts the mapping operation as it ran out of free descriptors or if there are too many segments in the first place, call bus_dmamap_unload() in order to unload the already loaded segments. For trying to map the defragmented mbuf (chain) in re_encap() this introduces re_dma_map_desc() setting arg.rl_maxsegs to 0 as a new failure mode. Previously we just ignored this case, corrupting our view of the TX ring. o In re_txeof(): - Don't clear IFF_DRV_OACTIVE unless there are at least 4 free TX descriptors. Further down the road re_encap() will bail if there aren't at least 4 free TX descriptors, causing re_start() to abort and prepend the dequeued mbuf again so it makes no sense to pretend we could process mbufs again when in fact we won't. While at it replace this magic 4 with a macro RL_TX_DESC_THLD throughout this driver. - Don't cancel the watchdog timeout as soon as there's at least one free TX descriptor but instead only if all descriptors have been handled. It's perfectly normal, especially in the DEVICE_POLLING case, that re_txeof() is called when only a part of the enqueued TX descriptors have been handled, causing the watchdog to be disarmed prematurely. o In re_encap(): - If m_defrag() fails just drop the packet like other NIC drivers do. This should only happen when there's a mbuf shortage, in which case it was possible to end up with an IFQ full of packets which couldn't be processed as they couldn't be defragmented as they were taking up all the mbufs themselves. This includes adjusting re_start() to not trying to prepend the mbuf (chain) if re_encap() has freed it. - Remove dupe initialization of members of struct rl_dmaload_arg to values that didn't change since trying to process the fragmented mbuf chain. While at it remove an unused member from struct rl_dmaload_arg. o In re_start() remove a abandoned, banal comment. The corresponding code was moved to re_attach() some time ago. With these changes re(4) now survives one day (until stopped) of hammering out packets here. Reviewed by: yongari MFC after: 2 weeks
2007-01-16 20:35:23 +00:00
if (m_new == NULL) {
m_freem(*m_head);
*m_head = NULL;
pass in pointer to m_head to re_encap because m_defrag could free the original mbuf causing a free'd mbuf passed to bpf later and panic'ing the system.. This should only effect jumbo frames. MFC after: 5 days
2004-09-18 18:08:28 +00:00
return (ENOBUFS);
o In re_newbuf() and re_encap() if re_dma_map_desc() aborts the mapping operation as it ran out of free descriptors or if there are too many segments in the first place, call bus_dmamap_unload() in order to unload the already loaded segments. For trying to map the defragmented mbuf (chain) in re_encap() this introduces re_dma_map_desc() setting arg.rl_maxsegs to 0 as a new failure mode. Previously we just ignored this case, corrupting our view of the TX ring. o In re_txeof(): - Don't clear IFF_DRV_OACTIVE unless there are at least 4 free TX descriptors. Further down the road re_encap() will bail if there aren't at least 4 free TX descriptors, causing re_start() to abort and prepend the dequeued mbuf again so it makes no sense to pretend we could process mbufs again when in fact we won't. While at it replace this magic 4 with a macro RL_TX_DESC_THLD throughout this driver. - Don't cancel the watchdog timeout as soon as there's at least one free TX descriptor but instead only if all descriptors have been handled. It's perfectly normal, especially in the DEVICE_POLLING case, that re_txeof() is called when only a part of the enqueued TX descriptors have been handled, causing the watchdog to be disarmed prematurely. o In re_encap(): - If m_defrag() fails just drop the packet like other NIC drivers do. This should only happen when there's a mbuf shortage, in which case it was possible to end up with an IFQ full of packets which couldn't be processed as they couldn't be defragmented as they were taking up all the mbufs themselves. This includes adjusting re_start() to not trying to prepend the mbuf (chain) if re_encap() has freed it. - Remove dupe initialization of members of struct rl_dmaload_arg to values that didn't change since trying to process the fragmented mbuf chain. While at it remove an unused member from struct rl_dmaload_arg. o In re_start() remove a abandoned, banal comment. The corresponding code was moved to re_attach() some time ago. With these changes re(4) now survives one day (until stopped) of hammering out packets here. Reviewed by: yongari MFC after: 2 weeks
2007-01-16 20:35:23 +00:00
}
*m_head = m_new;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
error = bus_dmamap_load_mbuf_sg(sc->rl_ldata.rl_tx_mtag,
txd->tx_dmamap, *m_head, segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
m_freem(*m_head);
o In re_newbuf() and re_encap() if re_dma_map_desc() aborts the mapping operation as it ran out of free descriptors or if there are too many segments in the first place, call bus_dmamap_unload() in order to unload the already loaded segments. For trying to map the defragmented mbuf (chain) in re_encap() this introduces re_dma_map_desc() setting arg.rl_maxsegs to 0 as a new failure mode. Previously we just ignored this case, corrupting our view of the TX ring. o In re_txeof(): - Don't clear IFF_DRV_OACTIVE unless there are at least 4 free TX descriptors. Further down the road re_encap() will bail if there aren't at least 4 free TX descriptors, causing re_start() to abort and prepend the dequeued mbuf again so it makes no sense to pretend we could process mbufs again when in fact we won't. While at it replace this magic 4 with a macro RL_TX_DESC_THLD throughout this driver. - Don't cancel the watchdog timeout as soon as there's at least one free TX descriptor but instead only if all descriptors have been handled. It's perfectly normal, especially in the DEVICE_POLLING case, that re_txeof() is called when only a part of the enqueued TX descriptors have been handled, causing the watchdog to be disarmed prematurely. o In re_encap(): - If m_defrag() fails just drop the packet like other NIC drivers do. This should only happen when there's a mbuf shortage, in which case it was possible to end up with an IFQ full of packets which couldn't be processed as they couldn't be defragmented as they were taking up all the mbufs themselves. This includes adjusting re_start() to not trying to prepend the mbuf (chain) if re_encap() has freed it. - Remove dupe initialization of members of struct rl_dmaload_arg to values that didn't change since trying to process the fragmented mbuf chain. While at it remove an unused member from struct rl_dmaload_arg. o In re_start() remove a abandoned, banal comment. The corresponding code was moved to re_attach() some time ago. With these changes re(4) now survives one day (until stopped) of hammering out packets here. Reviewed by: yongari MFC after: 2 weeks
2007-01-16 20:35:23 +00:00
*m_head = NULL;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
return (error);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
} else if (error != 0)
return (error);
if (nsegs == 0) {
m_freem(*m_head);
*m_head = NULL;
return (EIO);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
/* Check for number of available descriptors. */
if (sc->rl_ldata.rl_tx_free - nsegs <= 1) {
bus_dmamap_unload(sc->rl_ldata.rl_tx_mtag, txd->tx_dmamap);
return (ENOBUFS);
}
bus_dmamap_sync(sc->rl_ldata.rl_tx_mtag, txd->tx_dmamap,
BUS_DMASYNC_PREWRITE);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
* Set up checksum offload. Note: checksum offload bits must
* appear in all descriptors of a multi-descriptor transmit
* attempt. This is according to testing done with an 8169
* chip. This is a requirement.
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
*/
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
csum_flags = 0;
if (((*m_head)->m_pkthdr.csum_flags & CSUM_TSO) != 0)
csum_flags = RL_TDESC_CMD_LGSEND |
((uint32_t)(*m_head)->m_pkthdr.tso_segsz <<
RL_TDESC_CMD_MSSVAL_SHIFT);
else {
if ((*m_head)->m_pkthdr.csum_flags & CSUM_IP)
csum_flags |= RL_TDESC_CMD_IPCSUM;
if ((*m_head)->m_pkthdr.csum_flags & CSUM_TCP)
csum_flags |= RL_TDESC_CMD_TCPCSUM;
if ((*m_head)->m_pkthdr.csum_flags & CSUM_UDP)
csum_flags |= RL_TDESC_CMD_UDPCSUM;
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
si = prod;
for (i = 0; i < nsegs; i++, prod = RL_TX_DESC_NXT(sc, prod)) {
desc = &sc->rl_ldata.rl_tx_list[prod];
desc->rl_vlanctl = 0;
desc->rl_bufaddr_lo = htole32(RL_ADDR_LO(segs[i].ds_addr));
desc->rl_bufaddr_hi = htole32(RL_ADDR_HI(segs[i].ds_addr));
cmdstat = segs[i].ds_len;
if (i != 0)
cmdstat |= RL_TDESC_CMD_OWN;
if (prod == sc->rl_ldata.rl_tx_desc_cnt - 1)
cmdstat |= RL_TDESC_CMD_EOR;
desc->rl_cmdstat = htole32(cmdstat | csum_flags);
sc->rl_ldata.rl_tx_free--;
}
/* Update producer index. */
sc->rl_ldata.rl_tx_prodidx = prod;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
/* Set EOF on the last descriptor. */
ei = RL_TX_DESC_PRV(sc, prod);
desc = &sc->rl_ldata.rl_tx_list[ei];
desc->rl_cmdstat |= htole32(RL_TDESC_CMD_EOF);
desc = &sc->rl_ldata.rl_tx_list[si];
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Set up hardware VLAN tagging. Note: vlan tag info must
* appear in the first descriptor of a multi-descriptor
* transmission attempt.
*/
Move ethernet VLAN tags from mtags to its own mbuf packet header field m_pkthdr.ether_vlan. The presence of the M_VLANTAG flag on the mbuf signifies the presence and validity of its content. Drivers that support hardware VLAN tag stripping fill in the received VLAN tag (containing both vlan and priority information) into the ether_vtag mbuf packet header field: m->m_pkthdr.ether_vtag = vlan_id; /* ntohs()? */ m->m_flags |= M_VLANTAG; to mark the packet m with the specified VLAN tag. On output the driver should check the mbuf for the M_VLANTAG flag to see if a VLAN tag is present and valid: if (m->m_flags & M_VLANTAG) { ... = m->m_pkthdr.ether_vtag; /* htons()? */ ... pass tag to hardware ... } VLAN tags are stored in host byte order. Byte swapping may be necessary. (Note: This driver conversion was mechanic and did not add or remove any byte swapping in the drivers.) Remove zone_mtag_vlan UMA zone and MTAG_VLAN definition. No more tag memory allocation have to be done. Reviewed by: thompsa, yar Sponsored by: TCP/IP Optimization Fundraise 2005
2006-09-17 13:33:30 +00:00
if ((*m_head)->m_flags & M_VLANTAG)
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
desc->rl_vlanctl =
Move ethernet VLAN tags from mtags to its own mbuf packet header field m_pkthdr.ether_vlan. The presence of the M_VLANTAG flag on the mbuf signifies the presence and validity of its content. Drivers that support hardware VLAN tag stripping fill in the received VLAN tag (containing both vlan and priority information) into the ether_vtag mbuf packet header field: m->m_pkthdr.ether_vtag = vlan_id; /* ntohs()? */ m->m_flags |= M_VLANTAG; to mark the packet m with the specified VLAN tag. On output the driver should check the mbuf for the M_VLANTAG flag to see if a VLAN tag is present and valid: if (m->m_flags & M_VLANTAG) { ... = m->m_pkthdr.ether_vtag; /* htons()? */ ... pass tag to hardware ... } VLAN tags are stored in host byte order. Byte swapping may be necessary. (Note: This driver conversion was mechanic and did not add or remove any byte swapping in the drivers.) Remove zone_mtag_vlan UMA zone and MTAG_VLAN definition. No more tag memory allocation have to be done. Reviewed by: thompsa, yar Sponsored by: TCP/IP Optimization Fundraise 2005
2006-09-17 13:33:30 +00:00
htole32(htons((*m_head)->m_pkthdr.ether_vtag) |
RL_TDESC_VLANCTL_TAG);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
/* Set SOF and transfer ownership of packet to the chip. */
desc->rl_cmdstat |= htole32(RL_TDESC_CMD_OWN | RL_TDESC_CMD_SOF);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
/*
* Insure that the map for this transmission
* is placed at the array index of the last descriptor
* in this chain. (Swap last and first dmamaps.)
*/
txd_last = &sc->rl_ldata.rl_tx_desc[ei];
map = txd->tx_dmamap;
txd->tx_dmamap = txd_last->tx_dmamap;
txd_last->tx_dmamap = map;
txd_last->tx_m = *m_head;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
static void
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
re_tx_task(arg, npending)
void *arg;
int npending;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
{
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
struct ifnet *ifp;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
ifp = arg;
re_start(ifp);
return;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Main transmit routine for C+ and gigE NICs.
*/
static void
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
re_start(ifp)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
struct ifnet *ifp;
{
struct rl_softc *sc;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
struct mbuf *m_head;
int queued;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
sc = ifp->if_softc;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
RL_LOCK(sc);
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING || sc->rl_link == 0) {
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
RL_UNLOCK(sc);
return;
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
for (queued = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) &&
sc->rl_ldata.rl_tx_free > 1;) {
ALTQ support for re(4). Submitted by: Chris Dionissopoulos, Theo Schlossnagle PR: kern/78681 MFC after: 2 weeks
2005-03-12 17:35:37 +00:00
IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (m_head == NULL)
break;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (re_encap(sc, &m_head) != 0) {
o In re_newbuf() and re_encap() if re_dma_map_desc() aborts the mapping operation as it ran out of free descriptors or if there are too many segments in the first place, call bus_dmamap_unload() in order to unload the already loaded segments. For trying to map the defragmented mbuf (chain) in re_encap() this introduces re_dma_map_desc() setting arg.rl_maxsegs to 0 as a new failure mode. Previously we just ignored this case, corrupting our view of the TX ring. o In re_txeof(): - Don't clear IFF_DRV_OACTIVE unless there are at least 4 free TX descriptors. Further down the road re_encap() will bail if there aren't at least 4 free TX descriptors, causing re_start() to abort and prepend the dequeued mbuf again so it makes no sense to pretend we could process mbufs again when in fact we won't. While at it replace this magic 4 with a macro RL_TX_DESC_THLD throughout this driver. - Don't cancel the watchdog timeout as soon as there's at least one free TX descriptor but instead only if all descriptors have been handled. It's perfectly normal, especially in the DEVICE_POLLING case, that re_txeof() is called when only a part of the enqueued TX descriptors have been handled, causing the watchdog to be disarmed prematurely. o In re_encap(): - If m_defrag() fails just drop the packet like other NIC drivers do. This should only happen when there's a mbuf shortage, in which case it was possible to end up with an IFQ full of packets which couldn't be processed as they couldn't be defragmented as they were taking up all the mbufs themselves. This includes adjusting re_start() to not trying to prepend the mbuf (chain) if re_encap() has freed it. - Remove dupe initialization of members of struct rl_dmaload_arg to values that didn't change since trying to process the fragmented mbuf chain. While at it remove an unused member from struct rl_dmaload_arg. o In re_start() remove a abandoned, banal comment. The corresponding code was moved to re_attach() some time ago. With these changes re(4) now survives one day (until stopped) of hammering out packets here. Reviewed by: yongari MFC after: 2 weeks
2007-01-16 20:35:23 +00:00
if (m_head == NULL)
break;
ALTQ support for re(4). Submitted by: Chris Dionissopoulos, Theo Schlossnagle PR: kern/78681 MFC after: 2 weeks
2005-03-12 17:35:37 +00:00
IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to ifnet.if_drv_flags. Device drivers are now responsible for synchronizing access to these flags, as they are in if_drv_flags. This helps prevent races between the network stack and device driver in maintaining the interface flags field. Many __FreeBSD__ and __FreeBSD_version checks maintained and continued; some less so. Reviewed by: pjd, bz MFC after: 7 days
2005-08-09 10:20:02 +00:00
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
break;
}
/*
* If there's a BPF listener, bounce a copy of this frame
* to him.
*/
Catch up the rest of the drivers with the ether_vlan_mtap modifications. If these drivers are setting M_VLANTAG because they are stripping the layer 2 802.1Q headers, then they need to be re-inserting them so any bpf(4) peers can properly decode them. It should be noted that this is compiled tested only. MFC after: 3 weeks
2007-03-04 03:38:08 +00:00
ETHER_BPF_MTAP(ifp, m_head);
ALTQ support for re(4). Submitted by: Chris Dionissopoulos, Theo Schlossnagle PR: kern/78681 MFC after: 2 weeks
2005-03-12 17:35:37 +00:00
queued++;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
if (queued == 0) {
#ifdef RE_TX_MODERATION
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
if (sc->rl_ldata.rl_tx_free != sc->rl_ldata.rl_tx_desc_cnt)
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_WRITE_4(sc, RL_TIMERCNT, 1);
#endif
RL_UNLOCK(sc);
ALTQ support for re(4). Submitted by: Chris Dionissopoulos, Theo Schlossnagle PR: kern/78681 MFC after: 2 weeks
2005-03-12 17:35:37 +00:00
return;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
}
ALTQ support for re(4). Submitted by: Chris Dionissopoulos, Theo Schlossnagle PR: kern/78681 MFC after: 2 weeks
2005-03-12 17:35:37 +00:00
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Flush the TX descriptors */
bus_dmamap_sync(sc->rl_ldata.rl_tx_list_tag,
sc->rl_ldata.rl_tx_list_map,
BUS_DMASYNC_PREWRITE|BUS_DMASYNC_PREREAD);
Another small update to the re(4) driver: - Change the workaround for the autopad/checksum offload bug so that instead of lying about the map size, we actually create a properly padded mbuf and map it as usual. The other trick works, but is ugly. This approach also gives us a chance to zero the pad space to avoid possibly leaking data. - With the PCIe devices, it looks issuing a TX command while there's already a transmission in progress doesn't have any effect. In other words, if you send two packets in rapid succession, the second one may end up sitting in the TX DMA ring until another transmit command is issued later in the future. Basically, if re_txeof() sees that there are still descriptors outstanding, it needs to manually resume the TX DMA channel by issuing another TX command to make sure all transmissions are flushed out. (The PCI devices seem to keep the TX channel moving until all descriptors have been consumed. I'm not sure why the PCIe devices behave differently.) (You can see this issue if you do the following test: plug an re(4) interface into another host via crossover cable, and from the other host do 'ping -c 2 <host with re(4) NIC>' to prime the ARP cache, then do 'ping -c 1 -s 1473 <host with re(4) NIC>'. You're supposed to see two packets sent in response, but you may only see one. If you do 'ping -c 1 -s 1473 <host with re(4) NIC>' again, you'll see two packets, but one will be the missing fragment from the last ping, followed by one of the fragments from this ping.) - Add the PCI ID for the US Robotics 997902 NIC, which is based on the RTL8169S. - Add a tsleep() of 1 second in re_detach() after the interrupt handler is disconnected. This should allow any tasks queued up by the ISR to drain. Now, I know you're supposed to use taskqueue_drain() for this, but something about the way taskqueue_drain() works with taskqueue_fast queues doesn't seem quite right, and I refuse to be tricked into fixing it.
2006-08-01 17:18:25 +00:00
CSR_WRITE_1(sc, sc->rl_txstart, RL_TXSTART_START);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#ifdef RE_TX_MODERATION
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Use the countdown timer for interrupt moderation.
* 'TX done' interrupts are disabled. Instead, we reset the
* countdown timer, which will begin counting until it hits
* the value in the TIMERINT register, and then trigger an
* interrupt. Each time we write to the TIMERCNT register,
* the timer count is reset to 0.
*/
CSR_WRITE_4(sc, RL_TIMERCNT, 1);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#endif
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Set a timeout in case the chip goes out to lunch.
*/
- Use the re_tick() callout instead of if_slowtimo() for driving re_watchdog() in order to avoid races accessing if_timer. - Use bus_get_dma_tag() so re(4) works on platforms requiring it. - Remove invalid BUS_DMA_ALLOCNOW when creating the parent DMA tag and the tags that are used for static memory allocations. - Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that. - Remove an unused variable in re_intr().
2006-12-20 02:13:59 +00:00
sc->rl_watchdog_timer = 5;
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
RL_UNLOCK(sc);
return;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
static void
re_init(xsc)
void *xsc;
{
struct rl_softc *sc = xsc;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK(sc);
re_init_locked(sc);
RL_UNLOCK(sc);
}
static void
re_init_locked(sc)
struct rl_softc *sc;
{
Stop embedding struct ifnet at the top of driver softcs. Instead the struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam
2005-06-10 16:49:24 +00:00
struct ifnet *ifp = sc->rl_ifp;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
struct mii_data *mii;
u_int32_t rxcfg = 0;
Copy MAC address to fix alignment problems. Tested on alpha (AS600) with RTL8169S Suggested by: jhb
2006-02-20 10:29:40 +00:00
union {
uint32_t align_dummy;
u_char eaddr[ETHER_ADDR_LEN];
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
} eaddr;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK_ASSERT(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
mii = device_get_softc(sc->rl_miibus);
/*
* Cancel pending I/O and free all RX/TX buffers.
*/
re_stop(sc);
Teach the re(4) driver about the CFG2 register, which tells us whether we're on a 32-bit/64-bit bus or not. Use this to decide if we should set the PCI dual-address cycle enable bit in the C+ command register. (Enabling DAC on a 32-bit bus seems to do bad things.) Also, initialize the C+ command register early in the re_init() routine. The documentation says this register should be configured first.
2003-09-13 23:51:35 +00:00
/*
* Enable C+ RX and TX mode, as well as VLAN stripping and
Remove the dual-address cycle stuff. DAC is used to allow a bus master device to access 64-bit addresses from a 32-bit PCI bus. While the RealTek manual says you can set this bit and the chip will perform DAC only if you give it a DMA address with any of the upper 32 bits set, this appears not to be the case. If I turn on the DAC bit, the chip sets the 'system error' bit in the status register when I to do a DMA on my Athlon test box with 32-bit PCI bus (VIA chipset) even though I only have 128MB of physical memory, and thus can never give the chip a 64-bit address. Obviously, I can't just set it and forget it, so until I figure out the right rule for when it's safe/necessary to enable it, keep it turned off.
2003-09-20 21:18:27 +00:00
* RX checksum offload. We must configure the C+ register
Teach the re(4) driver about the CFG2 register, which tells us whether we're on a 32-bit/64-bit bus or not. Use this to decide if we should set the PCI dual-address cycle enable bit in the C+ command register. (Enabling DAC on a 32-bit bus seems to do bad things.) Also, initialize the C+ command register early in the re_init() routine. The documentation says this register should be configured first.
2003-09-13 23:51:35 +00:00
* before all others.
*/
CSR_WRITE_2(sc, RL_CPLUS_CMD, RL_CPLUSCMD_RXENB|
RL_CPLUSCMD_TXENB|RL_CPLUSCMD_PCI_MRW|
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
RL_CPLUSCMD_VLANSTRIP|RL_CPLUSCMD_RXCSUM_ENB);
Teach the re(4) driver about the CFG2 register, which tells us whether we're on a 32-bit/64-bit bus or not. Use this to decide if we should set the PCI dual-address cycle enable bit in the C+ command register. (Enabling DAC on a 32-bit bus seems to do bad things.) Also, initialize the C+ command register early in the re_init() routine. The documentation says this register should be configured first.
2003-09-13 23:51:35 +00:00
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Init our MAC address. Even though the chipset
* documentation doesn't mention it, we need to enter "Config
* register write enable" mode to modify the ID registers.
*/
Copy MAC address to fix alignment problems. Tested on alpha (AS600) with RTL8169S Suggested by: jhb
2006-02-20 10:29:40 +00:00
/* Copy MAC address on stack to align. */
bcopy(IF_LLADDR(ifp), eaddr.eaddr, ETHER_ADDR_LEN);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_WRITECFG);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_WRITE_4(sc, RL_IDR0,
htole32(*(u_int32_t *)(&eaddr.eaddr[0])));
CSR_WRITE_4(sc, RL_IDR4,
htole32(*(u_int32_t *)(&eaddr.eaddr[4])));
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF);
/*
* For C+ mode, initialize the RX descriptors and mbufs.
*/
re_rx_list_init(sc);
re_tx_list_init(sc);
It seems that enabling Tx and Rx before setting descriptor DMA addresses shall access invalid descriptor DMA addresses on PCIe hardwares and then panicked the system. To fix it set descriptor DMA addresses before enabling Tx and Rx such that hardware can see valid descriptor DMA addresses. Also set RL_EARLY_TX_THRESH before starting Tx and Rx. Reported by: steve.tell AT crashmail DOT de Tested by: steve.tell AT crashmail DOT de Obtained from: NetBSD MFC after: 1 week
2007-01-23 00:44:12 +00:00
/*
* Load the addresses of the RX and TX lists into the chip.
*/
CSR_WRITE_4(sc, RL_RXLIST_ADDR_HI,
RL_ADDR_HI(sc->rl_ldata.rl_rx_list_addr));
CSR_WRITE_4(sc, RL_RXLIST_ADDR_LO,
RL_ADDR_LO(sc->rl_ldata.rl_rx_list_addr));
CSR_WRITE_4(sc, RL_TXLIST_ADDR_HI,
RL_ADDR_HI(sc->rl_ldata.rl_tx_list_addr));
CSR_WRITE_4(sc, RL_TXLIST_ADDR_LO,
RL_ADDR_LO(sc->rl_ldata.rl_tx_list_addr));
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Enable transmit and receive.
*/
CSR_WRITE_1(sc, RL_COMMAND, RL_CMD_TX_ENB|RL_CMD_RX_ENB);
/*
* Set the initial TX and RX configuration.
*/
- For the 8169 chips, read the station address by forcing an EEPROM autoload and then copying the contends of the station address registers. For some reason, reading the EEPROM on the 8169S doesn't work right. This gets around the problem, and allows us to read the station address correctly on the 8169S. - Insert a delay after initiating packet transmition in re_diag() to allow lots of time for the frame to echo back to the host, and wait for both the 'RX complete' and 'timeout expired' bits in the ISR register to be set. - Deal more intelligently with the fact that the frame length field in the RX descriptor is a different width on the 8139C+ than it is on the 8169/8169S/8110S - For the 8169, you have to set bit 17 in the TX config register to enter digital loopback mode, but for the 8139C+, you have to set both bits 17 and 18. Take this into account so that re_diag() works properly for both types of chips.
2003-09-11 06:56:46 +00:00
if (sc->rl_testmode) {
if (sc->rl_type == RL_8169)
CSR_WRITE_4(sc, RL_TXCFG,
RL_TXCFG_CONFIG|RL_LOOPTEST_ON);
else
CSR_WRITE_4(sc, RL_TXCFG,
RL_TXCFG_CONFIG|RL_LOOPTEST_ON_CPLUS);
} else
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
CSR_WRITE_4(sc, RL_TXCFG, RL_TXCFG_CONFIG);
It seems that enabling Tx and Rx before setting descriptor DMA addresses shall access invalid descriptor DMA addresses on PCIe hardwares and then panicked the system. To fix it set descriptor DMA addresses before enabling Tx and Rx such that hardware can see valid descriptor DMA addresses. Also set RL_EARLY_TX_THRESH before starting Tx and Rx. Reported by: steve.tell AT crashmail DOT de Tested by: steve.tell AT crashmail DOT de Obtained from: NetBSD MFC after: 1 week
2007-01-23 00:44:12 +00:00
CSR_WRITE_1(sc, RL_EARLY_TX_THRESH, 16);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
CSR_WRITE_4(sc, RL_RXCFG, RL_RXCFG_CONFIG);
/* Set the individual bit to receive frames for this host only. */
rxcfg = CSR_READ_4(sc, RL_RXCFG);
rxcfg |= RL_RXCFG_RX_INDIV;
/* If we want promiscuous mode, set the allframes bit. */
spell RX correctly don't call re_rxeof a second time when we've already done the work pull common code out from if and else clauses MFC after: 3 days
2004-09-19 17:51:41 +00:00
if (ifp->if_flags & IFF_PROMISC)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
rxcfg |= RL_RXCFG_RX_ALLPHYS;
spell RX correctly don't call re_rxeof a second time when we've already done the work pull common code out from if and else clauses MFC after: 3 days
2004-09-19 17:51:41 +00:00
else
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
rxcfg &= ~RL_RXCFG_RX_ALLPHYS;
spell RX correctly don't call re_rxeof a second time when we've already done the work pull common code out from if and else clauses MFC after: 3 days
2004-09-19 17:51:41 +00:00
CSR_WRITE_4(sc, RL_RXCFG, rxcfg);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Set capture broadcast bit to capture broadcast frames.
*/
spell RX correctly don't call re_rxeof a second time when we've already done the work pull common code out from if and else clauses MFC after: 3 days
2004-09-19 17:51:41 +00:00
if (ifp->if_flags & IFF_BROADCAST)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
rxcfg |= RL_RXCFG_RX_BROAD;
spell RX correctly don't call re_rxeof a second time when we've already done the work pull common code out from if and else clauses MFC after: 3 days
2004-09-19 17:51:41 +00:00
else
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
rxcfg &= ~RL_RXCFG_RX_BROAD;
spell RX correctly don't call re_rxeof a second time when we've already done the work pull common code out from if and else clauses MFC after: 3 days
2004-09-19 17:51:41 +00:00
CSR_WRITE_4(sc, RL_RXCFG, rxcfg);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Program the multicast filter, if necessary.
*/
re_setmulti(sc);
#ifdef DEVICE_POLLING
/*
* Disable interrupts if we are polling.
*/
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
if (ifp->if_capenable & IFCAP_POLLING)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
CSR_WRITE_2(sc, RL_IMR, 0);
else /* otherwise ... */
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
#endif
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Enable interrupts.
*/
if (sc->rl_testmode)
CSR_WRITE_2(sc, RL_IMR, 0);
else
CSR_WRITE_2(sc, RL_IMR, RL_INTRS_CPLUS);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_WRITE_2(sc, RL_ISR, RL_INTRS_CPLUS);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* Set initial TX threshold */
sc->rl_txthresh = RL_TX_THRESH_INIT;
/* Start RX/TX process. */
CSR_WRITE_4(sc, RL_MISSEDPKT, 0);
#ifdef notdef
/* Enable receiver and transmitter. */
CSR_WRITE_1(sc, RL_COMMAND, RL_CMD_TX_ENB|RL_CMD_RX_ENB);
#endif
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#ifdef RE_TX_MODERATION
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* Initialize the timer interrupt register so that
* a timer interrupt will be generated once the timer
* reaches a certain number of ticks. The timer is
* reloaded on each transmit. This gives us TX interrupt
* moderation, which dramatically improves TX frame rate.
*/
if (sc->rl_type == RL_8169)
CSR_WRITE_4(sc, RL_TIMERINT_8169, 0x800);
else
CSR_WRITE_4(sc, RL_TIMERINT, 0x400);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
#endif
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/*
* For 8169 gigE NICs, set the max allowed RX packet
* size so we can receive jumbo frames.
*/
if (sc->rl_type == RL_8169)
CSR_WRITE_2(sc, RL_MAXRXPKTLEN, 16383);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
if (sc->rl_testmode)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
return;
mii_mediachg(mii);
Don't set RL_CFG1_FULLDUPLEX bit. The RL_CFG1_FULLDUPLEX bit in config register 1 is only valid on 8129.
2006-11-21 04:14:44 +00:00
CSR_WRITE_1(sc, RL_CFG1, CSR_READ_1(sc, RL_CFG1) | RL_CFG1_DRVLOAD);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to ifnet.if_drv_flags. Device drivers are now responsible for synchronizing access to these flags, as they are in if_drv_flags. This helps prevent races between the network stack and device driver in maintaining the interface flags field. Many __FreeBSD__ and __FreeBSD_version checks maintained and continued; some less so. Reviewed by: pjd, bz MFC after: 7 days
2005-08-09 10:20:02 +00:00
ifp->if_drv_flags |= IFF_DRV_RUNNING;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
sc->rl_link = 0;
- Use the re_tick() callout instead of if_slowtimo() for driving re_watchdog() in order to avoid races accessing if_timer. - Use bus_get_dma_tag() so re(4) works on platforms requiring it. - Remove invalid BUS_DMA_ALLOCNOW when creating the parent DMA tag and the tags that are used for static memory allocations. - Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that. - Remove an unused variable in re_intr().
2006-12-20 02:13:59 +00:00
sc->rl_watchdog_timer = 0;
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
callout_reset(&sc->rl_stat_callout, hz, re_tick, sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/*
* Set media options.
*/
static int
re_ifmedia_upd(ifp)
struct ifnet *ifp;
{
struct rl_softc *sc;
struct mii_data *mii;
sc = ifp->if_softc;
mii = device_get_softc(sc->rl_miibus);
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
RL_LOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
mii_mediachg(mii);
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Whitespace pass
2004-07-06 02:46:53 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/*
* Report current media status.
*/
static void
re_ifmedia_sts(ifp, ifmr)
struct ifnet *ifp;
struct ifmediareq *ifmr;
{
struct rl_softc *sc;
struct mii_data *mii;
sc = ifp->if_softc;
mii = device_get_softc(sc->rl_miibus);
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
RL_LOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
mii_pollstat(mii);
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
}
static int
re_ioctl(ifp, command, data)
struct ifnet *ifp;
u_long command;
caddr_t data;
{
struct rl_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *) data;
struct mii_data *mii;
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
int error = 0;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
Whitespace pass
2004-07-06 02:46:53 +00:00
switch (command) {
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
case SIOCSIFMTU:
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
RL_LOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (ifr->ifr_mtu > RL_JUMBO_MTU)
error = EINVAL;
ifp->if_mtu = ifr->ifr_mtu;
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
break;
case SIOCSIFFLAGS:
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK(sc);
Don't reinitialize the hardware if only PROMISC flag was changed. Previously whenever PROMISC mode turned on/off link renegotiation occurs and it could resulted in network unavailability for serveral seconds.(Depending on switch STP settings it could last several tens seconds.) Reported by: Prokofiev S.P. < proks AT logos DOT uptel DOT net > Tested by: Prokofiev S.P. < proks AT logos DOT uptel DOT net >
2007-04-18 00:40:43 +00:00
if ((ifp->if_flags & IFF_UP) != 0) {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
if (((ifp->if_flags ^ sc->rl_if_flags)
& IFF_PROMISC) != 0)
re_setmulti(sc);
} else
re_init_locked(sc);
} else {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
re_stop(sc);
}
sc->rl_if_flags = ifp->if_flags;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re_setmulti(sc);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
mii = device_get_softc(sc->rl_miibus);
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
{
Correctly switch IFCAP_VLAN_HWTAGGING on and off. Reported & tested by: Peter Blok <pblok bsd4all.org>
2006-03-03 12:32:51 +00:00
int mask, reinit;
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
reinit = 0;
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
#ifdef DEVICE_POLLING
if (mask & IFCAP_POLLING) {
if (ifr->ifr_reqcap & IFCAP_POLLING) {
error = ether_poll_register(re_poll, ifp);
if (error)
return(error);
RL_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_2(sc, RL_IMR, 0x0000);
ifp->if_capenable |= IFCAP_POLLING;
RL_UNLOCK(sc);
} else {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
RL_LOCK(sc);
CSR_WRITE_2(sc, RL_IMR, RL_INTRS_CPLUS);
ifp->if_capenable &= ~IFCAP_POLLING;
RL_UNLOCK(sc);
}
}
#endif /* DEVICE_POLLING */
if (mask & IFCAP_HWCSUM) {
Correctly switch IFCAP_VLAN_HWTAGGING on and off. Reported & tested by: Peter Blok <pblok bsd4all.org>
2006-03-03 12:32:51 +00:00
ifp->if_capenable ^= IFCAP_HWCSUM;
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
if (ifp->if_capenable & IFCAP_TXCSUM)
Add TSO support. Tested by: wilko, Pieter de Goeje < pieter AT degoeje DOT nl >
2006-11-21 04:40:30 +00:00
ifp->if_hwassist |= RE_CSUM_FEATURES;
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
else
Fix typo.
2006-11-21 05:41:11 +00:00
ifp->if_hwassist &= ~RE_CSUM_FEATURES;
Correctly switch IFCAP_VLAN_HWTAGGING on and off. Reported & tested by: Peter Blok <pblok bsd4all.org>
2006-03-03 12:32:51 +00:00
reinit = 1;
}
if (mask & IFCAP_VLAN_HWTAGGING) {
ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
reinit = 1;
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
}
Add TSO support. Tested by: wilko, Pieter de Goeje < pieter AT degoeje DOT nl >
2006-11-21 04:40:30 +00:00
if (mask & IFCAP_TSO4) {
ifp->if_capenable ^= IFCAP_TSO4;
if ((IFCAP_TSO4 & ifp->if_capenable) &&
(IFCAP_TSO4 & ifp->if_capabilities))
ifp->if_hwassist |= CSUM_TSO;
else
ifp->if_hwassist &= ~CSUM_TSO;
}
Correctly switch IFCAP_VLAN_HWTAGGING on and off. Reported & tested by: Peter Blok <pblok bsd4all.org>
2006-03-03 12:32:51 +00:00
if (reinit && ifp->if_drv_flags & IFF_DRV_RUNNING)
re_init(sc);
o Correctly set IFCAP_VLAN_HWCSUM as re(4) can do VLAN tagging/checksum offloading in hardware. o Correctly set media header length for VLAN.
2006-11-21 04:23:52 +00:00
VLAN_CAPABILITIES(ifp);
Big polling(4) cleanup. o Axe poll in trap. o Axe IFF_POLLING flag from if_flags. o Rework revision 1.21 (Giant removal), in such a way that poll_mtx is not dropped during call to polling handler. This fixes problem with idle polling. o Make registration and deregistration from polling in a functional way, insted of next tick/interrupt. o Obsolete kern.polling.enable. Polling is turned on/off with ifconfig. Detailed kern_poll.c changes: - Remove polling handler flags, introduced in 1.21. The are not needed now. - Forget and do not check if_flags, if_capenable and if_drv_flags. - Call all registered polling handlers unconditionally. - Do not drop poll_mtx, when entering polling handlers. - In ether_poll() NET_LOCK_GIANT prior to locking poll_mtx. - In netisr_poll() axe the block, where polling code asks drivers to unregister. - In netisr_poll() and ether_poll() do polling always, if any handlers are present. - In ether_poll_[de]register() remove a lot of error hiding code. Assert that arguments are correct, instead. - In ether_poll_[de]register() use standard return values in case of error or success. - Introduce poll_switch() that is a sysctl handler for kern.polling.enable. poll_switch() goes through interface list and enabled/disables polling. A message that kern.polling.enable is deprecated is printed. Detailed driver changes: - On attach driver announces IFCAP_POLLING in if_capabilities, but not in if_capenable. - On detach driver calls ether_poll_deregister() if polling is enabled. - In polling handler driver obtains its lock and checks IFF_DRV_RUNNING flag. If there is no, then unlocks and returns. - In ioctl handler driver checks for IFCAP_POLLING flag requested to be set or cleared. Driver first calls ether_poll_[de]register(), then obtains driver lock and [dis/en]ables interrupts. - In interrupt handler driver checks IFCAP_POLLING flag in if_capenable. If present, then returns.This is important to protect from spurious interrupts. Reviewed by: ru, sam, jhb
2005-10-01 18:56:19 +00:00
}
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
break;
default:
error = ether_ioctl(ifp, command, data);
break;
}
Whitespace pass
2004-07-06 02:46:53 +00:00
return (error);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
static void
- Use the re_tick() callout instead of if_slowtimo() for driving re_watchdog() in order to avoid races accessing if_timer. - Use bus_get_dma_tag() so re(4) works on platforms requiring it. - Remove invalid BUS_DMA_ALLOCNOW when creating the parent DMA tag and the tags that are used for static memory allocations. - Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that. - Remove an unused variable in re_intr().
2006-12-20 02:13:59 +00:00
re_watchdog(sc)
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
struct rl_softc *sc;
- Use the re_tick() callout instead of if_slowtimo() for driving re_watchdog() in order to avoid races accessing if_timer. - Use bus_get_dma_tag() so re(4) works on platforms requiring it. - Remove invalid BUS_DMA_ALLOCNOW when creating the parent DMA tag and the tags that are used for static memory allocations. - Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that. - Remove an unused variable in re_intr().
2006-12-20 02:13:59 +00:00
{
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
- Use the re_tick() callout instead of if_slowtimo() for driving re_watchdog() in order to avoid races accessing if_timer. - Use bus_get_dma_tag() so re(4) works on platforms requiring it. - Remove invalid BUS_DMA_ALLOCNOW when creating the parent DMA tag and the tags that are used for static memory allocations. - Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that. - Remove an unused variable in re_intr().
2006-12-20 02:13:59 +00:00
RL_LOCK_ASSERT(sc);
if (sc->rl_watchdog_timer == 0 || --sc->rl_watchdog_timer != 0)
return;
device_printf(sc->rl_dev, "watchdog timeout\n");
sc->rl_ifp->if_oerrors++;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re_txeof(sc);
re_rxeof(sc);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
re_init_locked(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
/*
* Stop the adapter and free any mbufs allocated to the
* RX and TX lists.
*/
static void
re_stop(sc)
struct rl_softc *sc;
{
register int i;
struct ifnet *ifp;
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
struct rl_txdesc *txd;
struct rl_rxdesc *rxd;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK_ASSERT(sc);
Stop embedding struct ifnet at the top of driver softcs. Instead the struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam
2005-06-10 16:49:24 +00:00
ifp = sc->rl_ifp;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
- Use the re_tick() callout instead of if_slowtimo() for driving re_watchdog() in order to avoid races accessing if_timer. - Use bus_get_dma_tag() so re(4) works on platforms requiring it. - Remove invalid BUS_DMA_ALLOCNOW when creating the parent DMA tag and the tags that are used for static memory allocations. - Don't bother to set if_mtu to ETHERMTU, ether_ifattach() does that. - Remove an unused variable in re_intr().
2006-12-20 02:13:59 +00:00
sc->rl_watchdog_timer = 0;
- Use if_printf() and device_printf() in re(4) and remove rl_unit from the softc. - Use callout_init_mtx() and rather than timeout/untimeout in both rl(4) and re(4). - Fix locking for ifmedia by locking the driver in the ifmedia handlers rather than in the miibus functions. (re(4) didn't lock the mii stuff at all!) - Fix some locking in re_ioctl(). Note: the two drivers share the same softc declared in if_rlreg.h, so they had to be change simultaneously. MFC after: 1 week Tested by: several on rl(4), none on re(4)
2005-09-29 16:52:19 +00:00
callout_stop(&sc->rl_stat_callout);
Propagate rename of IFF_OACTIVE and IFF_RUNNING to IFF_DRV_OACTIVE and IFF_DRV_RUNNING, as well as the move from ifnet.if_flags to ifnet.if_drv_flags. Device drivers are now responsible for synchronizing access to these flags, as they are in if_drv_flags. This helps prevent races between the network stack and device driver in maintaining the interface flags field. Many __FreeBSD__ and __FreeBSD_version checks maintained and continued; some less so. Reviewed by: pjd, bz MFC after: 7 days
2005-08-09 10:20:02 +00:00
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
CSR_WRITE_1(sc, RL_COMMAND, 0x00);
CSR_WRITE_2(sc, RL_IMR, 0x0000);
Add support for the RealTek 8169SC/8110SC and RTL8101E devices. The latter is a PCIe 10/100 chip. Finally fix the EEPROM reading code so that we can access the EEPROMs on all devices. In order to access the EEPROM, we must select 'EEPROM programming' mode, and then set the EEPROM chip select bit. Previously, we were setting both bits simultaneously, which doesn't work: they must be set in the right sequence. Always obtain the station address from the EEPROM, now that EEPROM reading works correctly. Make the TX interrupt moderation code based on the internal timer optional and turned off by default. Make the re_diag() routine conditional and off by default. When it is on, only use it for the original 8169, which was the only device that that really needed it. Modify interrupt handling to use a fast interrupt handler and fast taskqeueue. Correct the rgephy driver so that it only applies the DSP fixup for PHY revs 0 and 1. Later chips are fixed and don't need the fixup. Make the rgephy driver advertise both 1000_FD and 1000_HD bits in autoneg mode. A couple of the devices don't autoneg correctly unless configured this way.
2006-06-26 20:31:32 +00:00
CSR_WRITE_2(sc, RL_ISR, 0xFFFF);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
if (sc->rl_head != NULL) {
m_freem(sc->rl_head);
sc->rl_head = sc->rl_tail = NULL;
}
/* Free the TX list buffers. */
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++) {
txd = &sc->rl_ldata.rl_tx_desc[i];
if (txd->tx_m != NULL) {
bus_dmamap_sync(sc->rl_ldata.rl_tx_mtag,
txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->rl_ldata.rl_tx_mtag,
txd->tx_dmamap);
m_freem(txd->tx_m);
txd->tx_m = NULL;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
}
/* Free the RX list buffers. */
Overhaul re(4). o Increased number of Rx/Tx descriptors to 256 for 8169 GigEs because it's hard to push the hardware to the limit with default 64 descriptors. TSO requires large number of Tx descriptors to pass a full sized TCP segment(65535 bytes IP packet) to hardware. Previously it consumed 32 Tx descriptors, assuming MCLBYTES DMA segment size, to send the TCP segment which means re(4) couldn't queue more than two full sized IP packets. For 8139C+ it still uses 64 Rx/Tx descriptors due to its hardware limitations. With this changes there are (very) small waste of memory for 8139C+ users but I don't think it would affect 8139C+ users for most cases. o Various bus_dma(9) fixes. - The hardware supports DAC so allow 64bit DMA operations. - Removed BUS_DMA_ALLOC_NOW flag. - Increased DMA segment size to 4096 from MCLBYTES because TSO consumes too many descriptors with MCLBYTES DMA segment size. - Tx/Rx side bus_dmamap_load_mbuf_sg(9) support. With these changes the code is more readable than previous one and got a (slightly) better performance as it doesn't need to pass/ decode arguments to/from callback function. - Removed unnecessary callback function re_dmamap_desc() and nuked rl_dmaload_arg structure which was used in the callback. - Additional protection for DMA map load failure. In case of failure reuse current map instead of returning a bogus DMA map. - Deferred DMA map unloading/sync operation for maximum performance until we really need to load new DMA map. If we happen to reuse current map(e.g. input error) there is no need to sync/unload/load again. - The number of allowable Tx DMA segments for a mbuf chains are now 32 instead of magic nseg value. If the number of available Tx descriptors are short enough to send highly fragmented mbuf chains an optimized re_defrag() is called to collapse mbuf chains which is supposed to be much faster than m_defrag(9). re_defrag() was borrowed from ath(4). - Separated Rx/Tx DMA tag from a common DMA tag such that Rx DMA tag correctly uses DMA maps that were created with DMA alignment restriction(8bytes alignments). Tx DMA tag does not have such alignment limitation. - Added additional sanity checks for DMA ring map load failure. - Added additional spare Rx DMA map for graceful handling of Rx DMA map load failure. - Fixed misused bus_dmamap_sync(9) and added missing bus_dmamap_sync(9) in re_encap()/re_txeof()/re_rxeof(). o Enabled TSO again as re(4) have reasonable number of Tx descriptors. o Don't touch DMA address of a Tx descriptor in re_txeof(). It's not needed. o Fix incorrect update of if_ierrors counter. For Rx buffer shortage it should update if_qdrops as the buffer is reused. o Added checks for unsupported H/W revisions and return ENXIO for these hardwares. This is required to remove resource allocation code in re_probe as other drivers do in device probe routine. o Modified descriptor index manipulation macros as it's now possible to have different number of descriptors for Rx/Tx. o In re_start, to save a lock operation, use IFQ_DRV_IS_EMPTY before trying to invoke IFQ_DRV_DEQUEUE. Also don't blindly call re_encap since we already know the number of available Tx descriptors in advance. o Removed RL_TX_DESC_THLD which was used to reserve RL_TX_DESC_THLD descriptors in Tx path. There is no such a limitation mentioned in 8139C+/8169/8110/8168/8101/8111 datasheet and it seems to work ok without reserving RL_TX_DESC_THLD descriptors. o Fix a comment for RL_GTXSTART. The register is 8bits register. o Added comments for 8169/8139C+ hardware restrictions on descriptors. o Removed forward declaration for "struct rl_softc", it's not needed. o Added a new structure rl_txdesc for Tx descriptor managements and a structure rl_rxdesc for Rx descriptor managements. o Removed unused member variable rl_intlock in driver softc. There are still several unused member variables which are supposed to be used to access hardware statistics counters. But it seems that accessing hardware counters were not implemented yet.
2008-01-15 01:10:31 +00:00
for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++) {
rxd = &sc->rl_ldata.rl_rx_desc[i];
if (rxd->rx_m != NULL) {
bus_dmamap_sync(sc->rl_ldata.rl_tx_mtag,
rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->rl_ldata.rl_rx_mtag,
rxd->rx_dmamap);
m_freem(rxd->rx_m);
rxd->rx_m = NULL;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
}
}
/*
* Device suspend routine. Stop the interface and save some PCI
* settings in case the BIOS doesn't restore them properly on
* resume.
*/
static int
re_suspend(dev)
device_t dev;
{
struct rl_softc *sc;
sc = device_get_softc(dev);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re_stop(sc);
sc->suspended = 1;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
return (0);
}
/*
* Device resume routine. Restore some PCI settings in case the BIOS
* doesn't, re-enable busmastering, and restart the interface if
* appropriate.
*/
static int
re_resume(dev)
device_t dev;
{
struct rl_softc *sc;
struct ifnet *ifp;
sc = device_get_softc(dev);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK(sc);
Stop embedding struct ifnet at the top of driver softcs. Instead the struct ifnet or the layer 2 common structure it was embedded in have been replaced with a struct ifnet pointer to be filled by a call to the new function, if_alloc(). The layer 2 common structure is also allocated via if_alloc() based on the interface type. It is hung off the new struct ifnet member, if_l2com. This change removes the size of these structures from the kernel ABI and will allow us to better manage them as interfaces come and go. Other changes of note: - Struct arpcom is no longer referenced in normal interface code. Instead the Ethernet address is accessed via the IFP2ENADDR() macro. To enforce this ac_enaddr has been renamed to _ac_enaddr. - The second argument to ether_ifattach is now always the mac address from driver private storage rather than sometimes being ac_enaddr. Reviewed by: sobomax, sam
2005-06-10 16:49:24 +00:00
ifp = sc->rl_ifp;
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
/* reinitialize interface if necessary */
if (ifp->if_flags & IFF_UP)
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
re_init_locked(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
sc->suspended = 0;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_UNLOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
return (0);
}
/*
* Stop all chip I/O so that the kernel's probe routines don't
* get confused by errant DMAs when rebooting.
*/
Fix function prototype for device_shutdown method.
2007-11-22 02:45:00 +00:00
static int
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re_shutdown(dev)
device_t dev;
{
struct rl_softc *sc;
sc = device_get_softc(dev);
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_LOCK(sc);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
re_stop(sc);
In re_shutdown() mark interface as down since otherwise we will panic if interrupt comes in later on, which can happen in some uncommon cases. Another possible fix is to call re_detach() instead of re_stop(), like ve(4) does, but I am not sure if the latter is really RTTD, so that stick with this one-liner for now. PR: kern/80005 Approved by: silence on -arch, no reply from selected network gurus
2005-08-18 14:29:01 +00:00
/*
* Mark interface as down since otherwise we will panic if
* interrupt comes in later on, which can happen in some
Don't recommend re_detach() (like in vr(4)) as another possible method to prevent panicing in interrupt handler after re_shutdown(), sometimes seen on SMP systems. This would work here only because re_detach() clears IFF_UP (to prevent another race) and it was demonstrated that it's not enough to call vr_detach() in vr_shutdown() to prevent a panic.
2005-09-15 19:07:10 +00:00
* cases.
In re_shutdown() mark interface as down since otherwise we will panic if interrupt comes in later on, which can happen in some uncommon cases. Another possible fix is to call re_detach() instead of re_stop(), like ve(4) does, but I am not sure if the latter is really RTTD, so that stick with this one-liner for now. PR: kern/80005 Approved by: silence on -arch, no reply from selected network gurus
2005-08-18 14:29:01 +00:00
*/
sc->rl_ifp->if_flags &= ~IFF_UP;
merge in if_rl locking because if_re was originally based upon if_rl. This essentially merges revs 1.143-1.1445 of sys/pci/if_rl.c. This now marks the interrupt MPSAFE along with making the mutex non-recursive. Looked over by: bms
2004-09-03 16:41:41 +00:00
RL_UNLOCK(sc);
Fix function prototype for device_shutdown method.
2007-11-22 02:45:00 +00:00
return (0);
Take the support for the 8139C+/8169/8169S/8110S chips out of the rl(4) driver and put it in a new re(4) driver. The re(4) driver shares the if_rlreg.h file with rl(4) but is a separate module. (Ultimately I may change this. For now, it's convenient.) rl(4) has been modified so that it will never attach to an 8139C+ chip, leaving it to re(4) instead. Only re(4) has the PCI IDs to match the 8169/8169S/8110S gigE chips. if_re.c contains the same basic code that was originally bolted onto if_rl.c, with the following updates: - Added support for jumbo frames. Currently, there seems to be a limit of approximately 6200 bytes for jumbo frames on transmit. (This was determined via experimentation.) The 8169S/8110S chips apparently are limited to 7.5K frames on transmit. This may require some more work, though the framework to handle jumbo frames on RX is in place: the re_rxeof() routine will gather up frames than span multiple 2K clusters into a single mbuf list. - Fixed bug in re_txeof(): if we reap some of the TX buffers, but there are still some pending, re-arm the timer before exiting re_txeof() so that another timeout interrupt will be generated, just in case re_start() doesn't do it for us. - Handle the 'link state changed' interrupt - Fix a detach bug. If re(4) is loaded as a module, and you do tcpdump -i re0, then you do 'kldunload if_re,' the system will panic after a few seconds. This happens because ether_ifdetach() ends up calling the BPF detach code, which notices the interface is in promiscuous mode and tries to switch promisc mode off while detaching the BPF listner. This ultimately results in a call to re_ioctl() (due to SIOCSIFFLAGS), which in turn calls re_init() to handle the IFF_PROMISC flag change. Unfortunately, calling re_init() here turns the chip back on and restarts the 1-second timeout loop that drives re_tick(). By the time the timeout fires, if_re.ko has been unloaded, which results in a call to invalid code and blows up the system. To fix this, I cleared the IFF_UP flag before calling ether_ifdetach(), which stops the ioctl routine from trying to reset the chip. - Modified comments in re_rxeof() relating to the difference in RX descriptor status bit layout between the 8139C+ and the gigE chips. The layout is different because the frame length field was expanded from 12 bits to 13, and they got rid of one of the status bits to make room. - Add diagnostic code (re_diag()) to test for the case where a user has installed a broken 32-bit 8169 PCI NIC in a 64-bit slot. Some NICs have the REQ64# and ACK64# lines connected even though the board is 32-bit only (in this case, they should be pulled high). This fools the chip into doing 64-bit DMA transfers even though there is no 64-bit data path. To detect this, re_diag() puts the chip into digital loopback mode and sets the receiver to promiscuous mode, then initiates a single 64-byte packet transmission. The frame is echoed back to the host, and if the frame contents are intact, we know DMA is working correctly, otherwise we complain loudly on the console and abort the device attach. (At the moment, I don't know of any way to work around the problem other than physically modifying the board, so until/unless I can think of a software workaround, this will have do to.) - Created re(4) man page - Modified rlphy.c to allow re(4) to attach as well as rl(4). Note that this code works for the sample 8169/Marvell 88E1000 NIC that I have, but probably won't work for the 8169S/8110S chips. RealTek has sent me some sample NICs, but they haven't arrived yet. I will probably need to add an rlgphy driver to handle the on-board PHY in the 8169S/8110S (it needs special DSP initialization).
2003-09-08 02:11:25 +00:00
}
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