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freebsd-dev/sys/dev/vge/if_vgevar.h

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Start each of the license/copyright comments with /*-, minor shuffle of lines
2005-01-06 01:43:34 +00:00
/*-
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
* Copyright (c) 2004
* 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.
*
* $FreeBSD$
*/
#define VGE_JUMBO_MTU 9000
#define VGE_TX_DESC_CNT 256
Overhaul bus_dma(9) usage and fix various things. o Separate TX/RX buffer DMA tag from TX/RX descriptor ring DMA tag. o Separate RX buffer DMA tag from common buffer DMA tag. RX DMA tag has different restriction compared to TX DMA tag. o Add 40bit DMA address support. o Adjust TX/RX descriptor ring alignment to 64 bytes from 256 bytes as documented in datasheet. o Added check to ensure TX/RX ring reside within a 4GB boundary. Since TX/RX ring shares the same high address register they should have the same high address. o TX/RX side bus_dmamap_load_mbuf_sg(9) support. o Add lock assertion to vge_setmulti(). o Add RX spare DMA map to recover from DMA map load failure. o Add optimized RX buffer handler, vge_discard_rxbuf which is activated when vge(4) sees bad frames. o Don't blindly update VGE_RXDESC_RESIDUECNT register. Datasheet says the register should be updated only when number of available RX descriptors are multiple of 4. o Use __NO_STRICT_ALIGNMENT instead of defining VGE_FIXUP_RX which is only set for i386 architecture. Previously vge(4) also performed expensive copy operation to align IP header on amd64. This change should give RX performance boost on amd64 architecture. o Don't reinitialize controller if driver is already running. This should reduce number of link state flipping. o Since vge(4) drops a driver lock before passing received frame to upper layer, make sure vge(4) is still running after re-acquiring driver lock. o Add second argument count to vge_rxeof(). The argument will limit number of packets could be processed in RX handler. o Rearrange vge_rxeof() not to allocate RX buffer if received frame was bad packet. o Removed if_printf that prints DMA map failure. This type of message shouldn't be used in fast path of driver. o Reduce number of allowed TX buffer fragments to 6 from 7. A TX descriptor allows 7 fragments of a frame. However the CMZ field of descriptor has just 3bits and the controller wants to see fragment + 1 in the field. So if we have 7 fragments the field value would be 0 which seems to cause unexpected results under certain conditions. This change should fix occasional TX hang observed on vge(4). o Simplify vge_stat_locked() and add number of available TX descriptor check. o vge(4) controllers lack padding short frames. Make sure to fill zero for the padded bytes. This closes unintended information disclosure. o Don't set VGE_TDCTL_JUMBO flag. Datasheet is not clear whether this bit should be set by driver or write-back status bit after transmission. At least vendor's driver does not set this bit so remove it. Without this bit vge(4) still can send jumbo frames. o Don't start driver when vge(4) know there are not enough RX buffers. o Remove volatile keyword in RX descriptor structure. This should be handled by bus_dma(9). o Collapse two 16bits member of TX/RX descriptor into single 32bits member. o Reduce number of RX descriptors to 252 from 256. The VGE_RXDESCNUM is 16bits register but only lower 8bits are valid. So the maximum number of RX descriptors would be 255. However the number of should be multiple of 4 as controller wants to update 4 RX descriptors at a time. This limits the maximum number of RX descriptor to be 252. Tested by: Dewayne Geraghty (dewayne.geraghty <> heuristicsystems dot com dot au) Carey Jones (m.carey.jones <> gmail dot com) Yoshiaki Kasahara (kasahara <> nc dor kyushu-u dot ac dotjp)
2009-12-14 18:44:23 +00:00
#define VGE_RX_DESC_CNT 252 /* Must be a multiple of 4!! */
#define VGE_TX_RING_ALIGN 64
#define VGE_RX_RING_ALIGN 64
#define VGE_MAXTXSEGS 6
VT6130 datasheet was wrong. If VT6130 receive a jumbo frame the controller will split the jumbo frame into multiple RX buffers. However it seems the hardware always dma the frame to 8 bytes boundary for the split frames. Only the first part of the fragment can have 4 byte alignment and subsequent buffers should be 8 bytes aligned. Change RX buffer the alignment requirement to 8 bytes from 4 bytes.
2009-12-20 19:11:32 +00:00
#define VGE_RX_BUF_ALIGN sizeof(uint64_t)
Overhaul bus_dma(9) usage and fix various things. o Separate TX/RX buffer DMA tag from TX/RX descriptor ring DMA tag. o Separate RX buffer DMA tag from common buffer DMA tag. RX DMA tag has different restriction compared to TX DMA tag. o Add 40bit DMA address support. o Adjust TX/RX descriptor ring alignment to 64 bytes from 256 bytes as documented in datasheet. o Added check to ensure TX/RX ring reside within a 4GB boundary. Since TX/RX ring shares the same high address register they should have the same high address. o TX/RX side bus_dmamap_load_mbuf_sg(9) support. o Add lock assertion to vge_setmulti(). o Add RX spare DMA map to recover from DMA map load failure. o Add optimized RX buffer handler, vge_discard_rxbuf which is activated when vge(4) sees bad frames. o Don't blindly update VGE_RXDESC_RESIDUECNT register. Datasheet says the register should be updated only when number of available RX descriptors are multiple of 4. o Use __NO_STRICT_ALIGNMENT instead of defining VGE_FIXUP_RX which is only set for i386 architecture. Previously vge(4) also performed expensive copy operation to align IP header on amd64. This change should give RX performance boost on amd64 architecture. o Don't reinitialize controller if driver is already running. This should reduce number of link state flipping. o Since vge(4) drops a driver lock before passing received frame to upper layer, make sure vge(4) is still running after re-acquiring driver lock. o Add second argument count to vge_rxeof(). The argument will limit number of packets could be processed in RX handler. o Rearrange vge_rxeof() not to allocate RX buffer if received frame was bad packet. o Removed if_printf that prints DMA map failure. This type of message shouldn't be used in fast path of driver. o Reduce number of allowed TX buffer fragments to 6 from 7. A TX descriptor allows 7 fragments of a frame. However the CMZ field of descriptor has just 3bits and the controller wants to see fragment + 1 in the field. So if we have 7 fragments the field value would be 0 which seems to cause unexpected results under certain conditions. This change should fix occasional TX hang observed on vge(4). o Simplify vge_stat_locked() and add number of available TX descriptor check. o vge(4) controllers lack padding short frames. Make sure to fill zero for the padded bytes. This closes unintended information disclosure. o Don't set VGE_TDCTL_JUMBO flag. Datasheet is not clear whether this bit should be set by driver or write-back status bit after transmission. At least vendor's driver does not set this bit so remove it. Without this bit vge(4) still can send jumbo frames. o Don't start driver when vge(4) know there are not enough RX buffers. o Remove volatile keyword in RX descriptor structure. This should be handled by bus_dma(9). o Collapse two 16bits member of TX/RX descriptor into single 32bits member. o Reduce number of RX descriptors to 252 from 256. The VGE_RXDESCNUM is 16bits register but only lower 8bits are valid. So the maximum number of RX descriptors would be 255. However the number of should be multiple of 4 as controller wants to update 4 RX descriptors at a time. This limits the maximum number of RX descriptor to be 252. Tested by: Dewayne Geraghty (dewayne.geraghty <> heuristicsystems dot com dot au) Carey Jones (m.carey.jones <> gmail dot com) Yoshiaki Kasahara (kasahara <> nc dor kyushu-u dot ac dotjp)
2009-12-14 18:44:23 +00:00
/*
* VIA Velocity allows 64bit DMA addressing but high 16bits
* of the DMA address should be the same for Tx/Rx buffers.
* Because this condition can't be guaranteed vge(4) limit
* DMA address space to 48bits.
*/
#if (BUS_SPACE_MAXADDR < 0xFFFFFFFFFF)
#define VGE_BUF_DMA_MAXADDR BUS_SPACE_MAXADDR
#else
#define VGE_BUF_DMA_MAXADDR 0xFFFFFFFFFFFF
#endif
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
#define VGE_RX_LIST_SZ (VGE_RX_DESC_CNT * sizeof(struct vge_rx_desc))
#define VGE_TX_LIST_SZ (VGE_TX_DESC_CNT * sizeof(struct vge_tx_desc))
Overhaul bus_dma(9) usage and fix various things. o Separate TX/RX buffer DMA tag from TX/RX descriptor ring DMA tag. o Separate RX buffer DMA tag from common buffer DMA tag. RX DMA tag has different restriction compared to TX DMA tag. o Add 40bit DMA address support. o Adjust TX/RX descriptor ring alignment to 64 bytes from 256 bytes as documented in datasheet. o Added check to ensure TX/RX ring reside within a 4GB boundary. Since TX/RX ring shares the same high address register they should have the same high address. o TX/RX side bus_dmamap_load_mbuf_sg(9) support. o Add lock assertion to vge_setmulti(). o Add RX spare DMA map to recover from DMA map load failure. o Add optimized RX buffer handler, vge_discard_rxbuf which is activated when vge(4) sees bad frames. o Don't blindly update VGE_RXDESC_RESIDUECNT register. Datasheet says the register should be updated only when number of available RX descriptors are multiple of 4. o Use __NO_STRICT_ALIGNMENT instead of defining VGE_FIXUP_RX which is only set for i386 architecture. Previously vge(4) also performed expensive copy operation to align IP header on amd64. This change should give RX performance boost on amd64 architecture. o Don't reinitialize controller if driver is already running. This should reduce number of link state flipping. o Since vge(4) drops a driver lock before passing received frame to upper layer, make sure vge(4) is still running after re-acquiring driver lock. o Add second argument count to vge_rxeof(). The argument will limit number of packets could be processed in RX handler. o Rearrange vge_rxeof() not to allocate RX buffer if received frame was bad packet. o Removed if_printf that prints DMA map failure. This type of message shouldn't be used in fast path of driver. o Reduce number of allowed TX buffer fragments to 6 from 7. A TX descriptor allows 7 fragments of a frame. However the CMZ field of descriptor has just 3bits and the controller wants to see fragment + 1 in the field. So if we have 7 fragments the field value would be 0 which seems to cause unexpected results under certain conditions. This change should fix occasional TX hang observed on vge(4). o Simplify vge_stat_locked() and add number of available TX descriptor check. o vge(4) controllers lack padding short frames. Make sure to fill zero for the padded bytes. This closes unintended information disclosure. o Don't set VGE_TDCTL_JUMBO flag. Datasheet is not clear whether this bit should be set by driver or write-back status bit after transmission. At least vendor's driver does not set this bit so remove it. Without this bit vge(4) still can send jumbo frames. o Don't start driver when vge(4) know there are not enough RX buffers. o Remove volatile keyword in RX descriptor structure. This should be handled by bus_dma(9). o Collapse two 16bits member of TX/RX descriptor into single 32bits member. o Reduce number of RX descriptors to 252 from 256. The VGE_RXDESCNUM is 16bits register but only lower 8bits are valid. So the maximum number of RX descriptors would be 255. However the number of should be multiple of 4 as controller wants to update 4 RX descriptors at a time. This limits the maximum number of RX descriptor to be 252. Tested by: Dewayne Geraghty (dewayne.geraghty <> heuristicsystems dot com dot au) Carey Jones (m.carey.jones <> gmail dot com) Yoshiaki Kasahara (kasahara <> nc dor kyushu-u dot ac dotjp)
2009-12-14 18:44:23 +00:00
#define VGE_TX_DESC_INC(x) ((x) = ((x) + 1) % VGE_TX_DESC_CNT)
#define VGE_TX_DESC_DEC(x) \
((x) = (((x) + VGE_TX_DESC_CNT - 1) % VGE_TX_DESC_CNT))
#define VGE_RX_DESC_INC(x) ((x) = ((x) + 1) % VGE_RX_DESC_CNT)
#define VGE_ADDR_LO(y) ((uint64_t) (y) & 0xFFFFFFFF)
#define VGE_ADDR_HI(y) ((uint64_t) (y) >> 32)
#define VGE_BUFLEN(y) ((y) & 0x3FFF)
#define VGE_RXBYTES(x) (((x) & VGE_RDSTS_BUFSIZ) >> 16)
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
#define VGE_MIN_FRAMELEN 60
Implement interrupt moderation scheme supported by VT61xx controllers. TX/RX interrupt mitigation is controlled by VGE_TXSUPPTHR and VGE_RXSUPPTHR register. These registers suppress generation of interrupts until the programmed frames counter equals to the registers. VT61xx also supports interrupt hold off timer register. If this interrupt hold off timer is active all interrupts would be disabled until the timer reaches to 0. The timer value is reloaded whenever VGE_ISR register written. The timer resolution is about 20us. Previously vge(4) used single shot timer to reduce Tx completion interrupts. This required VGE_CRS1 register access in Tx start/completion handler to rearm new timeout value and it did not show satisfactory result(more than 50k interrupts under load). Rx interrupts was not moderated at all such that vge(4) used to generate too many interrupts which in turn made polling(4) better approach under high network load. This change activates all interrupt moderation mechanism and initial values were tuned to generate interrupt less than 8k per second. That number of interrupts wouldn't add additional packet latencies compared to polling(4). These interrupt parameters could be changed with sysctl. dev.vge.%d.int_holdoff dev.vge.%d.rx_coal_pkt dev.vge.%d.tx_coal_pkt Interface has be brought down and up again before change take effect. With interrupt moderation there is no more need to loop in interrupt handler. This loop always added one more register access. While I'm here remove dead code which tried to implement subset of interrupt moderation.
2009-12-17 18:00:25 +00:00
#define VGE_INT_HOLDOFF_TICK 20
#define VGE_INT_HOLDOFF_USEC(x) ((x) / VGE_INT_HOLDOFF_TICK)
#define VGE_INT_HOLDOFF_MIN 0
#define VGE_INT_HOLDOFF_MAX (255 * VGE_INT_HOLDOFF_TICK)
#define VGE_INT_HOLDOFF_DEFAULT 150
#define VGE_RX_COAL_PKT_MIN 1
#define VGE_RX_COAL_PKT_MAX VGE_RX_DESC_CNT
#define VGE_RX_COAL_PKT_DEFAULT 64
#define VGE_TX_COAL_PKT_MIN 1
#define VGE_TX_COAL_PKT_MAX VGE_TX_DESC_CNT
#define VGE_TX_COAL_PKT_DEFAULT 128
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
struct vge_type {
uint16_t vge_vid;
uint16_t vge_did;
char *vge_name;
};
Overhaul bus_dma(9) usage and fix various things. o Separate TX/RX buffer DMA tag from TX/RX descriptor ring DMA tag. o Separate RX buffer DMA tag from common buffer DMA tag. RX DMA tag has different restriction compared to TX DMA tag. o Add 40bit DMA address support. o Adjust TX/RX descriptor ring alignment to 64 bytes from 256 bytes as documented in datasheet. o Added check to ensure TX/RX ring reside within a 4GB boundary. Since TX/RX ring shares the same high address register they should have the same high address. o TX/RX side bus_dmamap_load_mbuf_sg(9) support. o Add lock assertion to vge_setmulti(). o Add RX spare DMA map to recover from DMA map load failure. o Add optimized RX buffer handler, vge_discard_rxbuf which is activated when vge(4) sees bad frames. o Don't blindly update VGE_RXDESC_RESIDUECNT register. Datasheet says the register should be updated only when number of available RX descriptors are multiple of 4. o Use __NO_STRICT_ALIGNMENT instead of defining VGE_FIXUP_RX which is only set for i386 architecture. Previously vge(4) also performed expensive copy operation to align IP header on amd64. This change should give RX performance boost on amd64 architecture. o Don't reinitialize controller if driver is already running. This should reduce number of link state flipping. o Since vge(4) drops a driver lock before passing received frame to upper layer, make sure vge(4) is still running after re-acquiring driver lock. o Add second argument count to vge_rxeof(). The argument will limit number of packets could be processed in RX handler. o Rearrange vge_rxeof() not to allocate RX buffer if received frame was bad packet. o Removed if_printf that prints DMA map failure. This type of message shouldn't be used in fast path of driver. o Reduce number of allowed TX buffer fragments to 6 from 7. A TX descriptor allows 7 fragments of a frame. However the CMZ field of descriptor has just 3bits and the controller wants to see fragment + 1 in the field. So if we have 7 fragments the field value would be 0 which seems to cause unexpected results under certain conditions. This change should fix occasional TX hang observed on vge(4). o Simplify vge_stat_locked() and add number of available TX descriptor check. o vge(4) controllers lack padding short frames. Make sure to fill zero for the padded bytes. This closes unintended information disclosure. o Don't set VGE_TDCTL_JUMBO flag. Datasheet is not clear whether this bit should be set by driver or write-back status bit after transmission. At least vendor's driver does not set this bit so remove it. Without this bit vge(4) still can send jumbo frames. o Don't start driver when vge(4) know there are not enough RX buffers. o Remove volatile keyword in RX descriptor structure. This should be handled by bus_dma(9). o Collapse two 16bits member of TX/RX descriptor into single 32bits member. o Reduce number of RX descriptors to 252 from 256. The VGE_RXDESCNUM is 16bits register but only lower 8bits are valid. So the maximum number of RX descriptors would be 255. However the number of should be multiple of 4 as controller wants to update 4 RX descriptors at a time. This limits the maximum number of RX descriptor to be 252. Tested by: Dewayne Geraghty (dewayne.geraghty <> heuristicsystems dot com dot au) Carey Jones (m.carey.jones <> gmail dot com) Yoshiaki Kasahara (kasahara <> nc dor kyushu-u dot ac dotjp)
2009-12-14 18:44:23 +00:00
struct vge_txdesc {
struct mbuf *tx_m;
bus_dmamap_t tx_dmamap;
struct vge_tx_desc *tx_desc;
struct vge_txdesc *txd_prev;
};
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
Overhaul bus_dma(9) usage and fix various things. o Separate TX/RX buffer DMA tag from TX/RX descriptor ring DMA tag. o Separate RX buffer DMA tag from common buffer DMA tag. RX DMA tag has different restriction compared to TX DMA tag. o Add 40bit DMA address support. o Adjust TX/RX descriptor ring alignment to 64 bytes from 256 bytes as documented in datasheet. o Added check to ensure TX/RX ring reside within a 4GB boundary. Since TX/RX ring shares the same high address register they should have the same high address. o TX/RX side bus_dmamap_load_mbuf_sg(9) support. o Add lock assertion to vge_setmulti(). o Add RX spare DMA map to recover from DMA map load failure. o Add optimized RX buffer handler, vge_discard_rxbuf which is activated when vge(4) sees bad frames. o Don't blindly update VGE_RXDESC_RESIDUECNT register. Datasheet says the register should be updated only when number of available RX descriptors are multiple of 4. o Use __NO_STRICT_ALIGNMENT instead of defining VGE_FIXUP_RX which is only set for i386 architecture. Previously vge(4) also performed expensive copy operation to align IP header on amd64. This change should give RX performance boost on amd64 architecture. o Don't reinitialize controller if driver is already running. This should reduce number of link state flipping. o Since vge(4) drops a driver lock before passing received frame to upper layer, make sure vge(4) is still running after re-acquiring driver lock. o Add second argument count to vge_rxeof(). The argument will limit number of packets could be processed in RX handler. o Rearrange vge_rxeof() not to allocate RX buffer if received frame was bad packet. o Removed if_printf that prints DMA map failure. This type of message shouldn't be used in fast path of driver. o Reduce number of allowed TX buffer fragments to 6 from 7. A TX descriptor allows 7 fragments of a frame. However the CMZ field of descriptor has just 3bits and the controller wants to see fragment + 1 in the field. So if we have 7 fragments the field value would be 0 which seems to cause unexpected results under certain conditions. This change should fix occasional TX hang observed on vge(4). o Simplify vge_stat_locked() and add number of available TX descriptor check. o vge(4) controllers lack padding short frames. Make sure to fill zero for the padded bytes. This closes unintended information disclosure. o Don't set VGE_TDCTL_JUMBO flag. Datasheet is not clear whether this bit should be set by driver or write-back status bit after transmission. At least vendor's driver does not set this bit so remove it. Without this bit vge(4) still can send jumbo frames. o Don't start driver when vge(4) know there are not enough RX buffers. o Remove volatile keyword in RX descriptor structure. This should be handled by bus_dma(9). o Collapse two 16bits member of TX/RX descriptor into single 32bits member. o Reduce number of RX descriptors to 252 from 256. The VGE_RXDESCNUM is 16bits register but only lower 8bits are valid. So the maximum number of RX descriptors would be 255. However the number of should be multiple of 4 as controller wants to update 4 RX descriptors at a time. This limits the maximum number of RX descriptor to be 252. Tested by: Dewayne Geraghty (dewayne.geraghty <> heuristicsystems dot com dot au) Carey Jones (m.carey.jones <> gmail dot com) Yoshiaki Kasahara (kasahara <> nc dor kyushu-u dot ac dotjp)
2009-12-14 18:44:23 +00:00
struct vge_rxdesc {
struct mbuf *rx_m;
bus_dmamap_t rx_dmamap;
struct vge_rx_desc *rx_desc;
struct vge_rxdesc *rxd_prev;
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
};
Overhaul bus_dma(9) usage and fix various things. o Separate TX/RX buffer DMA tag from TX/RX descriptor ring DMA tag. o Separate RX buffer DMA tag from common buffer DMA tag. RX DMA tag has different restriction compared to TX DMA tag. o Add 40bit DMA address support. o Adjust TX/RX descriptor ring alignment to 64 bytes from 256 bytes as documented in datasheet. o Added check to ensure TX/RX ring reside within a 4GB boundary. Since TX/RX ring shares the same high address register they should have the same high address. o TX/RX side bus_dmamap_load_mbuf_sg(9) support. o Add lock assertion to vge_setmulti(). o Add RX spare DMA map to recover from DMA map load failure. o Add optimized RX buffer handler, vge_discard_rxbuf which is activated when vge(4) sees bad frames. o Don't blindly update VGE_RXDESC_RESIDUECNT register. Datasheet says the register should be updated only when number of available RX descriptors are multiple of 4. o Use __NO_STRICT_ALIGNMENT instead of defining VGE_FIXUP_RX which is only set for i386 architecture. Previously vge(4) also performed expensive copy operation to align IP header on amd64. This change should give RX performance boost on amd64 architecture. o Don't reinitialize controller if driver is already running. This should reduce number of link state flipping. o Since vge(4) drops a driver lock before passing received frame to upper layer, make sure vge(4) is still running after re-acquiring driver lock. o Add second argument count to vge_rxeof(). The argument will limit number of packets could be processed in RX handler. o Rearrange vge_rxeof() not to allocate RX buffer if received frame was bad packet. o Removed if_printf that prints DMA map failure. This type of message shouldn't be used in fast path of driver. o Reduce number of allowed TX buffer fragments to 6 from 7. A TX descriptor allows 7 fragments of a frame. However the CMZ field of descriptor has just 3bits and the controller wants to see fragment + 1 in the field. So if we have 7 fragments the field value would be 0 which seems to cause unexpected results under certain conditions. This change should fix occasional TX hang observed on vge(4). o Simplify vge_stat_locked() and add number of available TX descriptor check. o vge(4) controllers lack padding short frames. Make sure to fill zero for the padded bytes. This closes unintended information disclosure. o Don't set VGE_TDCTL_JUMBO flag. Datasheet is not clear whether this bit should be set by driver or write-back status bit after transmission. At least vendor's driver does not set this bit so remove it. Without this bit vge(4) still can send jumbo frames. o Don't start driver when vge(4) know there are not enough RX buffers. o Remove volatile keyword in RX descriptor structure. This should be handled by bus_dma(9). o Collapse two 16bits member of TX/RX descriptor into single 32bits member. o Reduce number of RX descriptors to 252 from 256. The VGE_RXDESCNUM is 16bits register but only lower 8bits are valid. So the maximum number of RX descriptors would be 255. However the number of should be multiple of 4 as controller wants to update 4 RX descriptors at a time. This limits the maximum number of RX descriptor to be 252. Tested by: Dewayne Geraghty (dewayne.geraghty <> heuristicsystems dot com dot au) Carey Jones (m.carey.jones <> gmail dot com) Yoshiaki Kasahara (kasahara <> nc dor kyushu-u dot ac dotjp)
2009-12-14 18:44:23 +00:00
struct vge_chain_data{
bus_dma_tag_t vge_ring_tag;
bus_dma_tag_t vge_buffer_tag;
bus_dma_tag_t vge_tx_tag;
struct vge_txdesc vge_txdesc[VGE_TX_DESC_CNT];
bus_dma_tag_t vge_rx_tag;
struct vge_rxdesc vge_rxdesc[VGE_RX_DESC_CNT];
bus_dma_tag_t vge_tx_ring_tag;
bus_dmamap_t vge_tx_ring_map;
bus_dma_tag_t vge_rx_ring_tag;
bus_dmamap_t vge_rx_ring_map;
bus_dmamap_t vge_rx_sparemap;
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
int vge_tx_prodidx;
int vge_tx_considx;
Overhaul bus_dma(9) usage and fix various things. o Separate TX/RX buffer DMA tag from TX/RX descriptor ring DMA tag. o Separate RX buffer DMA tag from common buffer DMA tag. RX DMA tag has different restriction compared to TX DMA tag. o Add 40bit DMA address support. o Adjust TX/RX descriptor ring alignment to 64 bytes from 256 bytes as documented in datasheet. o Added check to ensure TX/RX ring reside within a 4GB boundary. Since TX/RX ring shares the same high address register they should have the same high address. o TX/RX side bus_dmamap_load_mbuf_sg(9) support. o Add lock assertion to vge_setmulti(). o Add RX spare DMA map to recover from DMA map load failure. o Add optimized RX buffer handler, vge_discard_rxbuf which is activated when vge(4) sees bad frames. o Don't blindly update VGE_RXDESC_RESIDUECNT register. Datasheet says the register should be updated only when number of available RX descriptors are multiple of 4. o Use __NO_STRICT_ALIGNMENT instead of defining VGE_FIXUP_RX which is only set for i386 architecture. Previously vge(4) also performed expensive copy operation to align IP header on amd64. This change should give RX performance boost on amd64 architecture. o Don't reinitialize controller if driver is already running. This should reduce number of link state flipping. o Since vge(4) drops a driver lock before passing received frame to upper layer, make sure vge(4) is still running after re-acquiring driver lock. o Add second argument count to vge_rxeof(). The argument will limit number of packets could be processed in RX handler. o Rearrange vge_rxeof() not to allocate RX buffer if received frame was bad packet. o Removed if_printf that prints DMA map failure. This type of message shouldn't be used in fast path of driver. o Reduce number of allowed TX buffer fragments to 6 from 7. A TX descriptor allows 7 fragments of a frame. However the CMZ field of descriptor has just 3bits and the controller wants to see fragment + 1 in the field. So if we have 7 fragments the field value would be 0 which seems to cause unexpected results under certain conditions. This change should fix occasional TX hang observed on vge(4). o Simplify vge_stat_locked() and add number of available TX descriptor check. o vge(4) controllers lack padding short frames. Make sure to fill zero for the padded bytes. This closes unintended information disclosure. o Don't set VGE_TDCTL_JUMBO flag. Datasheet is not clear whether this bit should be set by driver or write-back status bit after transmission. At least vendor's driver does not set this bit so remove it. Without this bit vge(4) still can send jumbo frames. o Don't start driver when vge(4) know there are not enough RX buffers. o Remove volatile keyword in RX descriptor structure. This should be handled by bus_dma(9). o Collapse two 16bits member of TX/RX descriptor into single 32bits member. o Reduce number of RX descriptors to 252 from 256. The VGE_RXDESCNUM is 16bits register but only lower 8bits are valid. So the maximum number of RX descriptors would be 255. However the number of should be multiple of 4 as controller wants to update 4 RX descriptors at a time. This limits the maximum number of RX descriptor to be 252. Tested by: Dewayne Geraghty (dewayne.geraghty <> heuristicsystems dot com dot au) Carey Jones (m.carey.jones <> gmail dot com) Yoshiaki Kasahara (kasahara <> nc dor kyushu-u dot ac dotjp)
2009-12-14 18:44:23 +00:00
int vge_tx_cnt;
int vge_rx_prodidx;
int vge_rx_commit;
struct mbuf *vge_head;
struct mbuf *vge_tail;
};
#define VGE_CHAIN_RESET(_sc) \
do { \
if ((_sc)->vge_cdata.vge_head != NULL) { \
m_freem((_sc)->vge_cdata.vge_head); \
(_sc)->vge_cdata.vge_head = NULL; \
(_sc)->vge_cdata.vge_tail = NULL; \
} \
} while (0);
struct vge_ring_data {
struct vge_tx_desc *vge_tx_ring;
bus_addr_t vge_tx_ring_paddr;
struct vge_rx_desc *vge_rx_ring;
bus_addr_t vge_rx_ring_paddr;
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
};
Add hardware MAC statistics support. This statistics could be extracted from dev.vge.%d.stats sysctl node.
2009-12-16 19:41:40 +00:00
struct vge_hw_stats {
uint32_t rx_frames;
uint32_t rx_good_frames;
uint32_t rx_fifo_oflows;
uint32_t rx_runts;
uint32_t rx_runts_errs;
uint32_t rx_pkts_64;
uint32_t rx_pkts_65_127;
uint32_t rx_pkts_128_255;
uint32_t rx_pkts_256_511;
uint32_t rx_pkts_512_1023;
uint32_t rx_pkts_1024_1518;
uint32_t rx_pkts_1519_max;
uint32_t rx_pkts_1519_max_errs;
uint32_t rx_jumbos;
uint32_t rx_crcerrs;
uint32_t rx_pause_frames;
uint32_t rx_alignerrs;
uint32_t rx_nobufs;
uint32_t rx_symerrs;
uint32_t rx_lenerrs;
uint32_t tx_good_frames;
uint32_t tx_pkts_64;
uint32_t tx_pkts_65_127;
uint32_t tx_pkts_128_255;
uint32_t tx_pkts_256_511;
uint32_t tx_pkts_512_1023;
uint32_t tx_pkts_1024_1518;
uint32_t tx_jumbos;
uint32_t tx_colls;
uint32_t tx_pause;
uint32_t tx_sqeerrs;
uint32_t tx_latecolls;
};
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
struct vge_softc {
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 *vge_ifp; /* interface info */
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
device_t vge_dev;
struct resource *vge_res;
struct resource *vge_irq;
void *vge_intrhand;
device_t vge_miibus;
int vge_if_flags;
Save PHY address by reading VGE_MIICFG register. For PCIe controllers(VT613x), we assume the PHY address is 1. Use the saved PHY address in MII register access routines and remove accessing VGE_MIICFG register. While I'm here save PCI express capability register which will be used in near future.
2009-12-14 20:39:42 +00:00
int vge_phyaddr;
Introduce vge_flags member in softc. The vge_flags member will record device specific bits. Remove vge_link and use vge_flags. While here, move clearing link state before mii_mediachg() as mii_mediachg() may affect link state.
2009-12-14 20:17:53 +00:00
int vge_flags;
Save PHY address by reading VGE_MIICFG register. For PCIe controllers(VT613x), we assume the PHY address is 1. Use the saved PHY address in MII register access routines and remove accessing VGE_MIICFG register. While I'm here save PCI express capability register which will be used in near future.
2009-12-14 20:39:42 +00:00
#define VGE_FLAG_PCIE 0x0001
Add MSI support for VT613x controllers.
2009-12-14 20:49:50 +00:00
#define VGE_FLAG_MSI 0x0002
Add rudimentary WOL support. While I'm here remove enabling busmastering/memory address in resume path. Bus driver will handle that.
2009-12-18 22:14:28 +00:00
#define VGE_FLAG_PMCAP 0x0004
Disable jumbo frame support for PCIe VT6130/VT6132 controllers. Quite contrary to VT6130 datasheet which says it supports up to 8K jumbo frame, VT6130 does not seem to send jumbo frame that is larger than 4K in length. Trying to send a frame that is larger than 4K cause TX MAC hang. Even though it's possible to allow 4K jumbo frame for VT6130, I think it's meaningless to allow 4K jumbo frame. I'm not sure VT6132 also has the same limitation but I guess it uses the same MAC of VT6130.
2009-12-20 19:45:46 +00:00
#define VGE_FLAG_JUMBO 0x0008
Add new flag VGE_FLAG_SUSPENDED to mark suspended state and remove suspended member in softc.
2009-12-16 19:49:23 +00:00
#define VGE_FLAG_SUSPENDED 0x4000
Introduce vge_flags member in softc. The vge_flags member will record device specific bits. Remove vge_link and use vge_flags. While here, move clearing link state before mii_mediachg() as mii_mediachg() may affect link state.
2009-12-14 20:17:53 +00:00
#define VGE_FLAG_LINK 0x8000
Save PHY address by reading VGE_MIICFG register. For PCIe controllers(VT613x), we assume the PHY address is 1. Use the saved PHY address in MII register access routines and remove accessing VGE_MIICFG register. While I'm here save PCI express capability register which will be used in near future.
2009-12-14 20:39:42 +00:00
int vge_expcap;
Add rudimentary WOL support. While I'm here remove enabling busmastering/memory address in resume path. Bus driver will handle that.
2009-12-18 22:14:28 +00:00
int vge_pmcap;
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
int vge_camidx;
Implement interrupt moderation scheme supported by VT61xx controllers. TX/RX interrupt mitigation is controlled by VGE_TXSUPPTHR and VGE_RXSUPPTHR register. These registers suppress generation of interrupts until the programmed frames counter equals to the registers. VT61xx also supports interrupt hold off timer register. If this interrupt hold off timer is active all interrupts would be disabled until the timer reaches to 0. The timer value is reloaded whenever VGE_ISR register written. The timer resolution is about 20us. Previously vge(4) used single shot timer to reduce Tx completion interrupts. This required VGE_CRS1 register access in Tx start/completion handler to rearm new timeout value and it did not show satisfactory result(more than 50k interrupts under load). Rx interrupts was not moderated at all such that vge(4) used to generate too many interrupts which in turn made polling(4) better approach under high network load. This change activates all interrupt moderation mechanism and initial values were tuned to generate interrupt less than 8k per second. That number of interrupts wouldn't add additional packet latencies compared to polling(4). These interrupt parameters could be changed with sysctl. dev.vge.%d.int_holdoff dev.vge.%d.rx_coal_pkt dev.vge.%d.tx_coal_pkt Interface has be brought down and up again before change take effect. With interrupt moderation there is no more need to loop in interrupt handler. This loop always added one more register access. While I'm here remove dead code which tried to implement subset of interrupt moderation.
2009-12-17 18:00:25 +00:00
int vge_int_holdoff;
int vge_rx_coal_pkt;
int vge_tx_coal_pkt;
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
struct mtx vge_mtx;
Several fixes to this driver: - Overhaul the locking to avoid recursion and add missing locking in a few places. - Don't schedule a task to call vge_start() from contexts that are safe to call vge_start() directly. Just invoke the routine directly instead (this is what all of the other NIC drivers I am familiar with do). Note that vge(4) does not use an interrupt filter handler which is the primary reason some other drivers use tasks. - Add a new private timer to drive the watchdog timer instead of using if_watchdog and if_timer. - Fixup detach by calling ether_ifdetach() before stopping the interface.
2009-11-19 19:35:15 +00:00
struct callout vge_watchdog;
int vge_timer;
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
Overhaul bus_dma(9) usage and fix various things. o Separate TX/RX buffer DMA tag from TX/RX descriptor ring DMA tag. o Separate RX buffer DMA tag from common buffer DMA tag. RX DMA tag has different restriction compared to TX DMA tag. o Add 40bit DMA address support. o Adjust TX/RX descriptor ring alignment to 64 bytes from 256 bytes as documented in datasheet. o Added check to ensure TX/RX ring reside within a 4GB boundary. Since TX/RX ring shares the same high address register they should have the same high address. o TX/RX side bus_dmamap_load_mbuf_sg(9) support. o Add lock assertion to vge_setmulti(). o Add RX spare DMA map to recover from DMA map load failure. o Add optimized RX buffer handler, vge_discard_rxbuf which is activated when vge(4) sees bad frames. o Don't blindly update VGE_RXDESC_RESIDUECNT register. Datasheet says the register should be updated only when number of available RX descriptors are multiple of 4. o Use __NO_STRICT_ALIGNMENT instead of defining VGE_FIXUP_RX which is only set for i386 architecture. Previously vge(4) also performed expensive copy operation to align IP header on amd64. This change should give RX performance boost on amd64 architecture. o Don't reinitialize controller if driver is already running. This should reduce number of link state flipping. o Since vge(4) drops a driver lock before passing received frame to upper layer, make sure vge(4) is still running after re-acquiring driver lock. o Add second argument count to vge_rxeof(). The argument will limit number of packets could be processed in RX handler. o Rearrange vge_rxeof() not to allocate RX buffer if received frame was bad packet. o Removed if_printf that prints DMA map failure. This type of message shouldn't be used in fast path of driver. o Reduce number of allowed TX buffer fragments to 6 from 7. A TX descriptor allows 7 fragments of a frame. However the CMZ field of descriptor has just 3bits and the controller wants to see fragment + 1 in the field. So if we have 7 fragments the field value would be 0 which seems to cause unexpected results under certain conditions. This change should fix occasional TX hang observed on vge(4). o Simplify vge_stat_locked() and add number of available TX descriptor check. o vge(4) controllers lack padding short frames. Make sure to fill zero for the padded bytes. This closes unintended information disclosure. o Don't set VGE_TDCTL_JUMBO flag. Datasheet is not clear whether this bit should be set by driver or write-back status bit after transmission. At least vendor's driver does not set this bit so remove it. Without this bit vge(4) still can send jumbo frames. o Don't start driver when vge(4) know there are not enough RX buffers. o Remove volatile keyword in RX descriptor structure. This should be handled by bus_dma(9). o Collapse two 16bits member of TX/RX descriptor into single 32bits member. o Reduce number of RX descriptors to 252 from 256. The VGE_RXDESCNUM is 16bits register but only lower 8bits are valid. So the maximum number of RX descriptors would be 255. However the number of should be multiple of 4 as controller wants to update 4 RX descriptors at a time. This limits the maximum number of RX descriptor to be 252. Tested by: Dewayne Geraghty (dewayne.geraghty <> heuristicsystems dot com dot au) Carey Jones (m.carey.jones <> gmail dot com) Yoshiaki Kasahara (kasahara <> nc dor kyushu-u dot ac dotjp)
2009-12-14 18:44:23 +00:00
struct vge_chain_data vge_cdata;
struct vge_ring_data vge_rdata;
Add hardware MAC statistics support. This statistics could be extracted from dev.vge.%d.stats sysctl node.
2009-12-16 19:41:40 +00:00
struct vge_hw_stats vge_stats;
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
};
#define VGE_LOCK(_sc) mtx_lock(&(_sc)->vge_mtx)
#define VGE_UNLOCK(_sc) mtx_unlock(&(_sc)->vge_mtx)
#define VGE_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->vge_mtx, MA_OWNED)
/*
* register space access macros
*/
#define CSR_WRITE_STREAM_4(sc, reg, val) \
Use the bus_*() routines rather than bus_space_*() for register operations.
2009-11-17 18:22:14 +00:00
bus_write_stream_4(sc->vge_res, reg, val)
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
#define CSR_WRITE_4(sc, reg, val) \
Use the bus_*() routines rather than bus_space_*() for register operations.
2009-11-17 18:22:14 +00:00
bus_write_4(sc->vge_res, reg, val)
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
#define CSR_WRITE_2(sc, reg, val) \
Use the bus_*() routines rather than bus_space_*() for register operations.
2009-11-17 18:22:14 +00:00
bus_write_2(sc->vge_res, reg, val)
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
#define CSR_WRITE_1(sc, reg, val) \
Use the bus_*() routines rather than bus_space_*() for register operations.
2009-11-17 18:22:14 +00:00
bus_write_1(sc->vge_res, reg, val)
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
#define CSR_READ_4(sc, reg) \
Use the bus_*() routines rather than bus_space_*() for register operations.
2009-11-17 18:22:14 +00:00
bus_read_4(sc->vge_res, reg)
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
#define CSR_READ_2(sc, reg) \
Use the bus_*() routines rather than bus_space_*() for register operations.
2009-11-17 18:22:14 +00:00
bus_read_2(sc->vge_res, reg)
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
#define CSR_READ_1(sc, reg) \
Use the bus_*() routines rather than bus_space_*() for register operations.
2009-11-17 18:22:14 +00:00
bus_read_1(sc->vge_res, reg)
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
#define CSR_SETBIT_1(sc, reg, x) \
CSR_WRITE_1(sc, reg, CSR_READ_1(sc, reg) | (x))
#define CSR_SETBIT_2(sc, reg, x) \
CSR_WRITE_2(sc, reg, CSR_READ_2(sc, reg) | (x))
#define CSR_SETBIT_4(sc, reg, x) \
CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x))
#define CSR_CLRBIT_1(sc, reg, x) \
CSR_WRITE_1(sc, reg, CSR_READ_1(sc, reg) & ~(x))
#define CSR_CLRBIT_2(sc, reg, x) \
CSR_WRITE_2(sc, reg, CSR_READ_2(sc, reg) & ~(x))
#define CSR_CLRBIT_4(sc, reg, x) \
CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x))
Overhaul bus_dma(9) usage and fix various things. o Separate TX/RX buffer DMA tag from TX/RX descriptor ring DMA tag. o Separate RX buffer DMA tag from common buffer DMA tag. RX DMA tag has different restriction compared to TX DMA tag. o Add 40bit DMA address support. o Adjust TX/RX descriptor ring alignment to 64 bytes from 256 bytes as documented in datasheet. o Added check to ensure TX/RX ring reside within a 4GB boundary. Since TX/RX ring shares the same high address register they should have the same high address. o TX/RX side bus_dmamap_load_mbuf_sg(9) support. o Add lock assertion to vge_setmulti(). o Add RX spare DMA map to recover from DMA map load failure. o Add optimized RX buffer handler, vge_discard_rxbuf which is activated when vge(4) sees bad frames. o Don't blindly update VGE_RXDESC_RESIDUECNT register. Datasheet says the register should be updated only when number of available RX descriptors are multiple of 4. o Use __NO_STRICT_ALIGNMENT instead of defining VGE_FIXUP_RX which is only set for i386 architecture. Previously vge(4) also performed expensive copy operation to align IP header on amd64. This change should give RX performance boost on amd64 architecture. o Don't reinitialize controller if driver is already running. This should reduce number of link state flipping. o Since vge(4) drops a driver lock before passing received frame to upper layer, make sure vge(4) is still running after re-acquiring driver lock. o Add second argument count to vge_rxeof(). The argument will limit number of packets could be processed in RX handler. o Rearrange vge_rxeof() not to allocate RX buffer if received frame was bad packet. o Removed if_printf that prints DMA map failure. This type of message shouldn't be used in fast path of driver. o Reduce number of allowed TX buffer fragments to 6 from 7. A TX descriptor allows 7 fragments of a frame. However the CMZ field of descriptor has just 3bits and the controller wants to see fragment + 1 in the field. So if we have 7 fragments the field value would be 0 which seems to cause unexpected results under certain conditions. This change should fix occasional TX hang observed on vge(4). o Simplify vge_stat_locked() and add number of available TX descriptor check. o vge(4) controllers lack padding short frames. Make sure to fill zero for the padded bytes. This closes unintended information disclosure. o Don't set VGE_TDCTL_JUMBO flag. Datasheet is not clear whether this bit should be set by driver or write-back status bit after transmission. At least vendor's driver does not set this bit so remove it. Without this bit vge(4) still can send jumbo frames. o Don't start driver when vge(4) know there are not enough RX buffers. o Remove volatile keyword in RX descriptor structure. This should be handled by bus_dma(9). o Collapse two 16bits member of TX/RX descriptor into single 32bits member. o Reduce number of RX descriptors to 252 from 256. The VGE_RXDESCNUM is 16bits register but only lower 8bits are valid. So the maximum number of RX descriptors would be 255. However the number of should be multiple of 4 as controller wants to update 4 RX descriptors at a time. This limits the maximum number of RX descriptor to be 252. Tested by: Dewayne Geraghty (dewayne.geraghty <> heuristicsystems dot com dot au) Carey Jones (m.carey.jones <> gmail dot com) Yoshiaki Kasahara (kasahara <> nc dor kyushu-u dot ac dotjp)
2009-12-14 18:44:23 +00:00
#define VGE_RXCHUNK 4
Add device driver support for the VIA Networking Technologies VT6122 gigabit ethernet chip and integrated 10/100/1000 copper PHY. The vge driver has been added to GENERIC for i386, pc98 and amd64, but not to sparc or ia64 since I don't have the ability to test it there. The vge(4) driver supports VLANs, checksum offload and jumbo frames. Also added the lge(4) and nge(4) drivers to GENERIC for i386 and pc98 since I was in the neighborhood. There's no reason to leave them out anymore.
2004-09-10 20:57:46 +00:00
#define VGE_TIMEOUT 10000
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