960fd5b3d0
offloading in hardware. o Correctly set media header length for VLAN.
2707 lines
65 KiB
C
2707 lines
65 KiB
C
/*-
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* Copyright (c) 1997, 1998-2003
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* Bill Paul <wpaul@windriver.com>. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* RealTek 8139C+/8169/8169S/8110S/8168/8111/8101E PCI NIC driver
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*
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* Written by Bill Paul <wpaul@windriver.com>
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* Senior Networking Software Engineer
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* Wind River Systems
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*/
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/*
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* This driver is designed to support RealTek's next generation of
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* 10/100 and 10/100/1000 PCI ethernet controllers. There are currently
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* seven devices in this family: the RTL8139C+, the RTL8169, the RTL8169S,
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* RTL8110S, the RTL8168, the RTL8111 and the RTL8101E.
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*
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* The 8139C+ is a 10/100 ethernet chip. It is backwards compatible
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* with the older 8139 family, however it also supports a special
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* C+ mode of operation that provides several new performance enhancing
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* features. These include:
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*
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* o Descriptor based DMA mechanism. Each descriptor represents
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* a single packet fragment. Data buffers may be aligned on
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* any byte boundary.
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*
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* o 64-bit DMA
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*
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* o TCP/IP checksum offload for both RX and TX
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*
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* o High and normal priority transmit DMA rings
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*
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* o VLAN tag insertion and extraction
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*
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* o TCP large send (segmentation offload)
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*
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* Like the 8139, the 8139C+ also has a built-in 10/100 PHY. The C+
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* programming API is fairly straightforward. The RX filtering, EEPROM
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* access and PHY access is the same as it is on the older 8139 series
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* chips.
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*
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* The 8169 is a 64-bit 10/100/1000 gigabit ethernet MAC. It has almost the
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* same programming API and feature set as the 8139C+ with the following
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* differences and additions:
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*
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* o 1000Mbps mode
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*
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* o Jumbo frames
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*
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* o GMII and TBI ports/registers for interfacing with copper
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* or fiber PHYs
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*
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* o RX and TX DMA rings can have up to 1024 descriptors
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* (the 8139C+ allows a maximum of 64)
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*
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* o Slight differences in register layout from the 8139C+
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*
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* The TX start and timer interrupt registers are at different locations
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* on the 8169 than they are on the 8139C+. Also, the status word in the
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* RX descriptor has a slightly different bit layout. The 8169 does not
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* have a built-in PHY. Most reference boards use a Marvell 88E1000 'Alaska'
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* copper gigE PHY.
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*
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* The 8169S/8110S 10/100/1000 devices have built-in copper gigE PHYs
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* (the 'S' stands for 'single-chip'). These devices have the same
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* programming API as the older 8169, but also have some vendor-specific
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* registers for the on-board PHY. The 8110S is a LAN-on-motherboard
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* part designed to be pin-compatible with the RealTek 8100 10/100 chip.
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*
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* This driver takes advantage of the RX and TX checksum offload and
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* VLAN tag insertion/extraction features. It also implements TX
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* interrupt moderation using the timer interrupt registers, which
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* significantly reduces TX interrupt load. There is also support
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* for jumbo frames, however the 8169/8169S/8110S can not transmit
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* jumbo frames larger than 7440, so the max MTU possible with this
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* driver is 7422 bytes.
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*/
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#ifdef HAVE_KERNEL_OPTION_HEADERS
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#include "opt_device_polling.h"
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#endif
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#include <sys/param.h>
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#include <sys/endian.h>
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#include <sys/systm.h>
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#include <sys/sockio.h>
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#include <sys/mbuf.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/taskqueue.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/ethernet.h>
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#include <net/if_dl.h>
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#include <net/if_media.h>
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#include <net/if_types.h>
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#include <net/if_vlan_var.h>
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#include <net/bpf.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <dev/mii/mii.h>
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#include <dev/mii/miivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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MODULE_DEPEND(re, pci, 1, 1, 1);
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MODULE_DEPEND(re, ether, 1, 1, 1);
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MODULE_DEPEND(re, miibus, 1, 1, 1);
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/* "device miibus" required. See GENERIC if you get errors here. */
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#include "miibus_if.h"
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/*
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* Default to using PIO access for this driver.
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*/
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#define RE_USEIOSPACE
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#include <pci/if_rlreg.h>
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#define RE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
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/*
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* Various supported device vendors/types and their names.
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*/
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static struct rl_type re_devs[] = {
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{ DLINK_VENDORID, DLINK_DEVICEID_528T, RL_HWREV_8169S,
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"D-Link DGE-528(T) Gigabit Ethernet Adapter" },
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{ RT_VENDORID, RT_DEVICEID_8139, RL_HWREV_8139CPLUS,
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"RealTek 8139C+ 10/100BaseTX" },
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{ RT_VENDORID, RT_DEVICEID_8101E, RL_HWREV_8101E,
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"RealTek 8101E PCIe 10/100baseTX" },
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{ RT_VENDORID, RT_DEVICEID_8168, RL_HWREV_8168_SPIN1,
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"RealTek 8168/8111B PCIe Gigabit Ethernet" },
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{ RT_VENDORID, RT_DEVICEID_8168, RL_HWREV_8168_SPIN2,
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"RealTek 8168/8111B PCIe Gigabit Ethernet" },
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{ RT_VENDORID, RT_DEVICEID_8169, RL_HWREV_8169,
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"RealTek 8169 Gigabit Ethernet" },
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{ RT_VENDORID, RT_DEVICEID_8169, RL_HWREV_8169S,
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"RealTek 8169S Single-chip Gigabit Ethernet" },
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{ RT_VENDORID, RT_DEVICEID_8169, RL_HWREV_8169_8110SB,
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"RealTek 8169SB/8110SB Single-chip Gigabit Ethernet" },
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{ RT_VENDORID, RT_DEVICEID_8169SC, RL_HWREV_8169_8110SC,
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"RealTek 8169SC/8110SC Single-chip Gigabit Ethernet" },
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{ RT_VENDORID, RT_DEVICEID_8169, RL_HWREV_8110S,
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"RealTek 8110S Single-chip Gigabit Ethernet" },
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{ COREGA_VENDORID, COREGA_DEVICEID_CGLAPCIGT, RL_HWREV_8169S,
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"Corega CG-LAPCIGT (RTL8169S) Gigabit Ethernet" },
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{ LINKSYS_VENDORID, LINKSYS_DEVICEID_EG1032, RL_HWREV_8169S,
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"Linksys EG1032 (RTL8169S) Gigabit Ethernet" },
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{ USR_VENDORID, USR_DEVICEID_997902, RL_HWREV_8169S,
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"US Robotics 997902 (RTL8169S) Gigabit Ethernet" },
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{ 0, 0, 0, NULL }
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};
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static struct rl_hwrev re_hwrevs[] = {
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{ RL_HWREV_8139, RL_8139, "" },
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{ RL_HWREV_8139A, RL_8139, "A" },
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{ RL_HWREV_8139AG, RL_8139, "A-G" },
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{ RL_HWREV_8139B, RL_8139, "B" },
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{ RL_HWREV_8130, RL_8139, "8130" },
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{ RL_HWREV_8139C, RL_8139, "C" },
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{ RL_HWREV_8139D, RL_8139, "8139D/8100B/8100C" },
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{ RL_HWREV_8139CPLUS, RL_8139CPLUS, "C+"},
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{ RL_HWREV_8168_SPIN1, RL_8169, "8168"},
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{ RL_HWREV_8169, RL_8169, "8169"},
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{ RL_HWREV_8169S, RL_8169, "8169S"},
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{ RL_HWREV_8110S, RL_8169, "8110S"},
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{ RL_HWREV_8169_8110SB, RL_8169, "8169SB"},
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{ RL_HWREV_8169_8110SC, RL_8169, "8169SC"},
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{ RL_HWREV_8100, RL_8139, "8100"},
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{ RL_HWREV_8101, RL_8139, "8101"},
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{ RL_HWREV_8100E, RL_8169, "8100E"},
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{ RL_HWREV_8101E, RL_8169, "8101E"},
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{ RL_HWREV_8168_SPIN2, RL_8169, "8168"},
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{ 0, 0, NULL }
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};
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static int re_probe (device_t);
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static int re_attach (device_t);
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static int re_detach (device_t);
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static int re_encap (struct rl_softc *, struct mbuf **, int *);
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static void re_dma_map_addr (void *, bus_dma_segment_t *, int, int);
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static void re_dma_map_desc (void *, bus_dma_segment_t *, int,
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bus_size_t, int);
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static int re_allocmem (device_t, struct rl_softc *);
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static int re_newbuf (struct rl_softc *, int, struct mbuf *);
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static int re_rx_list_init (struct rl_softc *);
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static int re_tx_list_init (struct rl_softc *);
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#ifdef RE_FIXUP_RX
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static __inline void re_fixup_rx
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(struct mbuf *);
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#endif
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static int re_rxeof (struct rl_softc *);
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static void re_txeof (struct rl_softc *);
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#ifdef DEVICE_POLLING
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static void re_poll (struct ifnet *, enum poll_cmd, int);
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static void re_poll_locked (struct ifnet *, enum poll_cmd, int);
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#endif
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static void re_intr (void *);
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static void re_tick (void *);
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static void re_tx_task (void *, int);
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static void re_int_task (void *, int);
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static void re_start (struct ifnet *);
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static int re_ioctl (struct ifnet *, u_long, caddr_t);
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static void re_init (void *);
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static void re_init_locked (struct rl_softc *);
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static void re_stop (struct rl_softc *);
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static void re_watchdog (struct ifnet *);
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static int re_suspend (device_t);
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static int re_resume (device_t);
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static void re_shutdown (device_t);
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static int re_ifmedia_upd (struct ifnet *);
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static void re_ifmedia_sts (struct ifnet *, struct ifmediareq *);
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static void re_eeprom_putbyte (struct rl_softc *, int);
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static void re_eeprom_getword (struct rl_softc *, int, u_int16_t *);
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static void re_read_eeprom (struct rl_softc *, caddr_t, int, int);
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static int re_gmii_readreg (device_t, int, int);
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static int re_gmii_writereg (device_t, int, int, int);
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static int re_miibus_readreg (device_t, int, int);
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static int re_miibus_writereg (device_t, int, int, int);
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static void re_miibus_statchg (device_t);
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static void re_setmulti (struct rl_softc *);
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static void re_reset (struct rl_softc *);
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#ifdef RE_DIAG
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static int re_diag (struct rl_softc *);
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#endif
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#ifdef RE_USEIOSPACE
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#define RL_RES SYS_RES_IOPORT
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#define RL_RID RL_PCI_LOIO
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#else
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#define RL_RES SYS_RES_MEMORY
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#define RL_RID RL_PCI_LOMEM
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#endif
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static device_method_t re_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, re_probe),
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DEVMETHOD(device_attach, re_attach),
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DEVMETHOD(device_detach, re_detach),
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DEVMETHOD(device_suspend, re_suspend),
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DEVMETHOD(device_resume, re_resume),
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DEVMETHOD(device_shutdown, re_shutdown),
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/* bus interface */
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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/* MII interface */
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DEVMETHOD(miibus_readreg, re_miibus_readreg),
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DEVMETHOD(miibus_writereg, re_miibus_writereg),
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DEVMETHOD(miibus_statchg, re_miibus_statchg),
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{ 0, 0 }
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};
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static driver_t re_driver = {
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"re",
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re_methods,
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sizeof(struct rl_softc)
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};
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static devclass_t re_devclass;
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DRIVER_MODULE(re, pci, re_driver, re_devclass, 0, 0);
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DRIVER_MODULE(re, cardbus, re_driver, re_devclass, 0, 0);
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DRIVER_MODULE(miibus, re, miibus_driver, miibus_devclass, 0, 0);
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#define EE_SET(x) \
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CSR_WRITE_1(sc, RL_EECMD, \
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CSR_READ_1(sc, RL_EECMD) | x)
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#define EE_CLR(x) \
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CSR_WRITE_1(sc, RL_EECMD, \
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CSR_READ_1(sc, RL_EECMD) & ~x)
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/*
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* Send a read command and address to the EEPROM, check for ACK.
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*/
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static void
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re_eeprom_putbyte(sc, addr)
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struct rl_softc *sc;
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int addr;
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{
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register int d, i;
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d = addr | (RL_9346_READ << sc->rl_eewidth);
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/*
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* Feed in each bit and strobe the clock.
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*/
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for (i = 1 << (sc->rl_eewidth + 3); i; i >>= 1) {
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if (d & i) {
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EE_SET(RL_EE_DATAIN);
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} else {
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EE_CLR(RL_EE_DATAIN);
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}
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DELAY(100);
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EE_SET(RL_EE_CLK);
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DELAY(150);
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EE_CLR(RL_EE_CLK);
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DELAY(100);
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}
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return;
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}
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|
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/*
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* Read a word of data stored in the EEPROM at address 'addr.'
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*/
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static void
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re_eeprom_getword(sc, addr, dest)
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struct rl_softc *sc;
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int addr;
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u_int16_t *dest;
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{
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register int i;
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u_int16_t word = 0;
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/*
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* Send address of word we want to read.
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*/
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re_eeprom_putbyte(sc, addr);
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/*
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* Start reading bits from EEPROM.
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*/
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for (i = 0x8000; i; i >>= 1) {
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EE_SET(RL_EE_CLK);
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DELAY(100);
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if (CSR_READ_1(sc, RL_EECMD) & RL_EE_DATAOUT)
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word |= i;
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EE_CLR(RL_EE_CLK);
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DELAY(100);
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}
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*dest = word;
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return;
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}
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|
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/*
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* Read a sequence of words from the EEPROM.
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*/
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static void
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re_read_eeprom(sc, dest, off, cnt)
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struct rl_softc *sc;
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caddr_t dest;
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int off;
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int cnt;
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{
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int i;
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u_int16_t word = 0, *ptr;
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CSR_SETBIT_1(sc, RL_EECMD, RL_EEMODE_PROGRAM);
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DELAY(100);
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for (i = 0; i < cnt; i++) {
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CSR_SETBIT_1(sc, RL_EECMD, RL_EE_SEL);
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re_eeprom_getword(sc, off + i, &word);
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CSR_CLRBIT_1(sc, RL_EECMD, RL_EE_SEL);
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ptr = (u_int16_t *)(dest + (i * 2));
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*ptr = word;
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}
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CSR_CLRBIT_1(sc, RL_EECMD, RL_EEMODE_PROGRAM);
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return;
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}
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|
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static int
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re_gmii_readreg(dev, phy, reg)
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device_t dev;
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int phy, reg;
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{
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struct rl_softc *sc;
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u_int32_t rval;
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int i;
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if (phy != 1)
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return (0);
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sc = device_get_softc(dev);
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/* Let the rgephy driver read the GMEDIASTAT register */
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if (reg == RL_GMEDIASTAT) {
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rval = CSR_READ_1(sc, RL_GMEDIASTAT);
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return (rval);
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}
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CSR_WRITE_4(sc, RL_PHYAR, reg << 16);
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DELAY(1000);
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for (i = 0; i < RL_TIMEOUT; i++) {
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rval = CSR_READ_4(sc, RL_PHYAR);
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if (rval & RL_PHYAR_BUSY)
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break;
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DELAY(100);
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|
}
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|
if (i == RL_TIMEOUT) {
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device_printf(sc->rl_dev, "PHY read failed\n");
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return (0);
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}
|
|
|
|
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) |
|
|
(data & RL_PHYAR_PHYDATA) | RL_PHYAR_BUSY);
|
|
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) {
|
|
device_printf(sc->rl_dev, "PHY write failed\n");
|
|
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) {
|
|
return (0);
|
|
}
|
|
switch (reg) {
|
|
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:
|
|
return (0);
|
|
/*
|
|
* 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);
|
|
return (rval);
|
|
default:
|
|
device_printf(sc->rl_dev, "bad phy register\n");
|
|
return (0);
|
|
}
|
|
rval = CSR_READ_2(sc, re8139_reg);
|
|
if (sc->rl_type == RL_8139CPLUS && re8139_reg == RL_BMCR) {
|
|
/* 8139C+ has different bit layout. */
|
|
rval &= ~(BMCR_LOOP | BMCR_ISO);
|
|
}
|
|
return (rval);
|
|
}
|
|
|
|
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 */
|
|
if (phy)
|
|
return (0);
|
|
|
|
switch (reg) {
|
|
case MII_BMCR:
|
|
re8139_reg = RL_BMCR;
|
|
if (sc->rl_type == RL_8139CPLUS) {
|
|
/* 8139C+ has different bit layout. */
|
|
data &= ~(BMCR_LOOP | BMCR_ISO);
|
|
}
|
|
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:
|
|
return (0);
|
|
break;
|
|
default:
|
|
device_printf(sc->rl_dev, "bad phy register\n");
|
|
return (0);
|
|
}
|
|
CSR_WRITE_2(sc, re8139_reg, data);
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
re_miibus_statchg(dev)
|
|
device_t dev;
|
|
{
|
|
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
RL_LOCK_ASSERT(sc);
|
|
|
|
ifp = sc->rl_ifp;
|
|
|
|
rxfilt = CSR_READ_4(sc, RL_RXCFG);
|
|
|
|
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
|
|
rxfilt |= RL_RXCFG_RX_MULTI;
|
|
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 */
|
|
IF_ADDR_LOCK(ifp);
|
|
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
|
|
if (ifma->ifma_addr->sa_family != AF_LINK)
|
|
continue;
|
|
h = ether_crc32_be(LLADDR((struct sockaddr_dl *)
|
|
ifma->ifma_addr), ETHER_ADDR_LEN) >> 26;
|
|
if (h < 32)
|
|
hashes[0] |= (1 << h);
|
|
else
|
|
hashes[1] |= (1 << (h - 32));
|
|
mcnt++;
|
|
}
|
|
IF_ADDR_UNLOCK(ifp);
|
|
|
|
if (mcnt)
|
|
rxfilt |= RL_RXCFG_RX_MULTI;
|
|
else
|
|
rxfilt &= ~RL_RXCFG_RX_MULTI;
|
|
|
|
CSR_WRITE_4(sc, RL_RXCFG, rxfilt);
|
|
CSR_WRITE_4(sc, RL_MAR0, hashes[0]);
|
|
CSR_WRITE_4(sc, RL_MAR4, hashes[1]);
|
|
}
|
|
|
|
static void
|
|
re_reset(sc)
|
|
struct rl_softc *sc;
|
|
{
|
|
register int i;
|
|
|
|
RL_LOCK_ASSERT(sc);
|
|
|
|
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)
|
|
device_printf(sc->rl_dev, "reset never completed!\n");
|
|
|
|
CSR_WRITE_1(sc, 0x82, 1);
|
|
}
|
|
|
|
#ifdef RE_DIAG
|
|
|
|
/*
|
|
* 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;
|
|
{
|
|
struct ifnet *ifp = sc->rl_ifp;
|
|
struct mbuf *m0;
|
|
struct ether_header *eh;
|
|
struct rl_desc *cur_rx;
|
|
u_int16_t status;
|
|
u_int32_t rxstat;
|
|
int total_len, i, error = 0, phyaddr;
|
|
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)
|
|
return (ENOBUFS);
|
|
|
|
RL_LOCK(sc);
|
|
|
|
/*
|
|
* 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;
|
|
re_reset(sc);
|
|
re_init_locked(sc);
|
|
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);
|
|
|
|
DELAY(100000);
|
|
|
|
/* 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;
|
|
|
|
/*
|
|
* Queue the packet, start transmission.
|
|
* Note: IF_HANDOFF() ultimately calls re_start() for us.
|
|
*/
|
|
|
|
CSR_WRITE_2(sc, RL_ISR, 0xFFFF);
|
|
RL_UNLOCK(sc);
|
|
/* XXX: re_diag must not be called when in ALTQ mode */
|
|
IF_HANDOFF(&ifp->if_snd, m0, ifp);
|
|
RL_LOCK(sc);
|
|
m0 = NULL;
|
|
|
|
/* Wait for it to propagate through the chip */
|
|
|
|
DELAY(100000);
|
|
for (i = 0; i < RL_TIMEOUT; i++) {
|
|
status = CSR_READ_2(sc, RL_ISR);
|
|
CSR_WRITE_2(sc, RL_ISR, status);
|
|
if ((status & (RL_ISR_TIMEOUT_EXPIRED|RL_ISR_RX_OK)) ==
|
|
(RL_ISR_TIMEOUT_EXPIRED|RL_ISR_RX_OK))
|
|
break;
|
|
DELAY(10);
|
|
}
|
|
|
|
if (i == RL_TIMEOUT) {
|
|
device_printf(sc->rl_dev,
|
|
"diagnostic failed, failed to receive packet in"
|
|
" loopback mode\n");
|
|
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);
|
|
bus_dmamap_sync(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_rx_dmamap[0],
|
|
BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_rx_dmamap[0]);
|
|
|
|
m0 = sc->rl_ldata.rl_rx_mbuf[0];
|
|
sc->rl_ldata.rl_rx_mbuf[0] = NULL;
|
|
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) {
|
|
device_printf(sc->rl_dev,
|
|
"diagnostic failed, received short packet\n");
|
|
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) {
|
|
device_printf(sc->rl_dev, "WARNING, DMA FAILURE!\n");
|
|
device_printf(sc->rl_dev, "expected TX data: %6D/%6D/0x%x\n",
|
|
dst, ":", src, ":", ETHERTYPE_IP);
|
|
device_printf(sc->rl_dev, "received RX data: %6D/%6D/0x%x\n",
|
|
eh->ether_dhost, ":", eh->ether_shost, ":",
|
|
ntohs(eh->ether_type));
|
|
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");
|
|
error = EIO;
|
|
}
|
|
|
|
done:
|
|
/* Turn interface off, release resources */
|
|
|
|
sc->rl_testmode = 0;
|
|
sc->rl_link = 0;
|
|
ifp->if_flags &= ~IFF_PROMISC;
|
|
re_stop(sc);
|
|
if (m0 != NULL)
|
|
m_freem(m0);
|
|
|
|
RL_UNLOCK(sc);
|
|
|
|
return (error);
|
|
}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* 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);
|
|
|
|
while (t->rl_name != NULL) {
|
|
if ((pci_get_vendor(dev) == t->rl_vid) &&
|
|
(pci_get_device(dev) == t->rl_did)) {
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
/*
|
|
* Temporarily map the I/O space
|
|
* so we can read the chip ID register.
|
|
*/
|
|
rid = RL_RID;
|
|
sc->rl_res = bus_alloc_resource_any(dev, RL_RES, &rid,
|
|
RF_ACTIVE);
|
|
if (sc->rl_res == NULL) {
|
|
device_printf(dev,
|
|
"couldn't map ports/memory\n");
|
|
return (ENXIO);
|
|
}
|
|
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);
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
}
|
|
t++;
|
|
}
|
|
|
|
return (ENXIO);
|
|
}
|
|
|
|
/*
|
|
* This routine takes the segment list provided as the result of
|
|
* a bus_dma_map_load() operation and assigns the addresses/lengths
|
|
* to RealTek DMA descriptors. This can be called either by the RX
|
|
* code or the TX code. In the RX case, we'll probably wind up mapping
|
|
* at most one segment. For the TX case, there could be any number of
|
|
* segments since TX packets may span multiple mbufs. In either case,
|
|
* if the number of segments is larger than the rl_maxsegs limit
|
|
* specified by the caller, we abort the mapping operation. Sadly,
|
|
* whoever designed the buffer mapping API did not provide a way to
|
|
* return an error from here, so we have to fake it a bit.
|
|
*/
|
|
|
|
static void
|
|
re_dma_map_desc(arg, segs, nseg, mapsize, error)
|
|
void *arg;
|
|
bus_dma_segment_t *segs;
|
|
int nseg;
|
|
bus_size_t mapsize;
|
|
int error;
|
|
{
|
|
struct rl_dmaload_arg *ctx;
|
|
struct rl_desc *d = NULL;
|
|
int i = 0, idx;
|
|
u_int32_t cmdstat;
|
|
int totlen = 0;
|
|
|
|
if (error)
|
|
return;
|
|
|
|
ctx = arg;
|
|
|
|
/* Signal error to caller if there's too many segments */
|
|
if (nseg > ctx->rl_maxsegs) {
|
|
ctx->rl_maxsegs = 0;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Map the segment array into descriptors. Note that we set the
|
|
* start-of-frame and end-of-frame markers for either TX or RX, but
|
|
* they really only have meaning in the TX case. (In the RX case,
|
|
* it's the chip that tells us where packets begin and end.)
|
|
* We also keep track of the end of the ring and set the
|
|
* end-of-ring bits as needed, and we set the ownership bits
|
|
* in all except the very first descriptor. (The caller will
|
|
* set this descriptor later when it start transmission or
|
|
* reception.)
|
|
*/
|
|
idx = ctx->rl_idx;
|
|
for (;;) {
|
|
d = &ctx->rl_ring[idx];
|
|
if (le32toh(d->rl_cmdstat) & RL_RDESC_STAT_OWN) {
|
|
ctx->rl_maxsegs = 0;
|
|
return;
|
|
}
|
|
cmdstat = segs[i].ds_len;
|
|
totlen += segs[i].ds_len;
|
|
d->rl_bufaddr_lo = htole32(RL_ADDR_LO(segs[i].ds_addr));
|
|
d->rl_bufaddr_hi = htole32(RL_ADDR_HI(segs[i].ds_addr));
|
|
if (i == 0)
|
|
cmdstat |= RL_TDESC_CMD_SOF;
|
|
else
|
|
cmdstat |= RL_TDESC_CMD_OWN;
|
|
if (idx == (RL_RX_DESC_CNT - 1))
|
|
cmdstat |= RL_TDESC_CMD_EOR;
|
|
d->rl_cmdstat = htole32(cmdstat | ctx->rl_flags);
|
|
i++;
|
|
if (i == nseg)
|
|
break;
|
|
RL_DESC_INC(idx);
|
|
}
|
|
|
|
d->rl_cmdstat |= htole32(RL_TDESC_CMD_EOF);
|
|
ctx->rl_maxsegs = nseg;
|
|
ctx->rl_idx = idx;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
{
|
|
bus_addr_t *addr;
|
|
|
|
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;
|
|
{
|
|
int error;
|
|
int nseg;
|
|
int i;
|
|
|
|
/*
|
|
* Allocate map for RX mbufs.
|
|
*/
|
|
nseg = 32;
|
|
error = bus_dma_tag_create(sc->rl_parent_tag, ETHER_ALIGN, 0,
|
|
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL,
|
|
NULL, MCLBYTES * nseg, nseg, MCLBYTES, BUS_DMA_ALLOCNOW,
|
|
NULL, NULL, &sc->rl_ldata.rl_mtag);
|
|
if (error) {
|
|
device_printf(dev, "could not allocate dma tag\n");
|
|
return (ENOMEM);
|
|
}
|
|
|
|
/*
|
|
* 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,
|
|
NULL, RL_TX_LIST_SZ, 1, RL_TX_LIST_SZ, BUS_DMA_ALLOCNOW,
|
|
NULL, NULL, &sc->rl_ldata.rl_tx_list_tag);
|
|
if (error) {
|
|
device_printf(dev, "could not allocate dma tag\n");
|
|
return (ENOMEM);
|
|
}
|
|
|
|
/* Allocate DMA'able memory for the TX ring */
|
|
|
|
error = bus_dmamem_alloc(sc->rl_ldata.rl_tx_list_tag,
|
|
(void **)&sc->rl_ldata.rl_tx_list, BUS_DMA_NOWAIT | BUS_DMA_ZERO,
|
|
&sc->rl_ldata.rl_tx_list_map);
|
|
if (error)
|
|
return (ENOMEM);
|
|
|
|
/* Load the map for the TX ring. */
|
|
|
|
error = bus_dmamap_load(sc->rl_ldata.rl_tx_list_tag,
|
|
sc->rl_ldata.rl_tx_list_map, sc->rl_ldata.rl_tx_list,
|
|
RL_TX_LIST_SZ, re_dma_map_addr,
|
|
&sc->rl_ldata.rl_tx_list_addr, BUS_DMA_NOWAIT);
|
|
|
|
/* Create DMA maps for TX buffers */
|
|
|
|
for (i = 0; i < RL_TX_DESC_CNT; i++) {
|
|
error = bus_dmamap_create(sc->rl_ldata.rl_mtag, 0,
|
|
&sc->rl_ldata.rl_tx_dmamap[i]);
|
|
if (error) {
|
|
device_printf(dev, "can't create DMA map for TX\n");
|
|
return (ENOMEM);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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,
|
|
NULL, RL_RX_LIST_SZ, 1, RL_RX_LIST_SZ, BUS_DMA_ALLOCNOW,
|
|
NULL, NULL, &sc->rl_ldata.rl_rx_list_tag);
|
|
if (error) {
|
|
device_printf(dev, "could not allocate dma tag\n");
|
|
return (ENOMEM);
|
|
}
|
|
|
|
/* Allocate DMA'able memory for the RX ring */
|
|
|
|
error = bus_dmamem_alloc(sc->rl_ldata.rl_rx_list_tag,
|
|
(void **)&sc->rl_ldata.rl_rx_list, BUS_DMA_NOWAIT | BUS_DMA_ZERO,
|
|
&sc->rl_ldata.rl_rx_list_map);
|
|
if (error)
|
|
return (ENOMEM);
|
|
|
|
/* Load the map for the RX ring. */
|
|
|
|
error = bus_dmamap_load(sc->rl_ldata.rl_rx_list_tag,
|
|
sc->rl_ldata.rl_rx_list_map, sc->rl_ldata.rl_rx_list,
|
|
RL_RX_LIST_SZ, re_dma_map_addr,
|
|
&sc->rl_ldata.rl_rx_list_addr, BUS_DMA_NOWAIT);
|
|
|
|
/* Create DMA maps for RX buffers */
|
|
|
|
for (i = 0; i < RL_RX_DESC_CNT; i++) {
|
|
error = bus_dmamap_create(sc->rl_ldata.rl_mtag, 0,
|
|
&sc->rl_ldata.rl_rx_dmamap[i]);
|
|
if (error) {
|
|
device_printf(dev, "can't create DMA map for RX\n");
|
|
return (ENOMEM);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* 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];
|
|
u_int16_t as[ETHER_ADDR_LEN / 2];
|
|
struct rl_softc *sc;
|
|
struct ifnet *ifp;
|
|
struct rl_hwrev *hw_rev;
|
|
int hwrev;
|
|
u_int16_t re_did = 0;
|
|
int error = 0, rid, i;
|
|
|
|
sc = device_get_softc(dev);
|
|
sc->rl_dev = dev;
|
|
|
|
mtx_init(&sc->rl_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK,
|
|
MTX_DEF);
|
|
callout_init_mtx(&sc->rl_stat_callout, &sc->rl_mtx, 0);
|
|
|
|
/*
|
|
* Map control/status registers.
|
|
*/
|
|
pci_enable_busmaster(dev);
|
|
|
|
rid = RL_RID;
|
|
sc->rl_res = bus_alloc_resource_any(dev, RL_RES, &rid,
|
|
RF_ACTIVE);
|
|
|
|
if (sc->rl_res == NULL) {
|
|
device_printf(dev, "couldn't map ports/memory\n");
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
sc->rl_btag = rman_get_bustag(sc->rl_res);
|
|
sc->rl_bhandle = rman_get_bushandle(sc->rl_res);
|
|
|
|
/* Allocate interrupt */
|
|
rid = 0;
|
|
sc->rl_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
|
|
RF_SHAREABLE | RF_ACTIVE);
|
|
|
|
if (sc->rl_irq == NULL) {
|
|
device_printf(dev, "couldn't map interrupt\n");
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
/* Reset the adapter. */
|
|
RL_LOCK(sc);
|
|
re_reset(sc);
|
|
RL_UNLOCK(sc);
|
|
|
|
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++;
|
|
}
|
|
|
|
sc->rl_eewidth = 6;
|
|
re_read_eeprom(sc, (caddr_t)&re_did, 0, 1);
|
|
if (re_did != 0x8129)
|
|
sc->rl_eewidth = 8;
|
|
|
|
/*
|
|
* Get station address from the EEPROM.
|
|
*/
|
|
re_read_eeprom(sc, (caddr_t)as, RL_EE_EADDR, 3);
|
|
for (i = 0; i < ETHER_ADDR_LEN / 2; i++)
|
|
as[i] = le16toh(as[i]);
|
|
bcopy(as, eaddr, sizeof(eaddr));
|
|
|
|
if (sc->rl_type == RL_8169) {
|
|
/* Set RX length mask */
|
|
sc->rl_rxlenmask = RL_RDESC_STAT_GFRAGLEN;
|
|
sc->rl_txstart = RL_GTXSTART;
|
|
} else {
|
|
/* Set RX length mask */
|
|
sc->rl_rxlenmask = RL_RDESC_STAT_FRAGLEN;
|
|
sc->rl_txstart = RL_TXSTART;
|
|
}
|
|
|
|
/*
|
|
* Allocate the parent bus DMA tag appropriate for PCI.
|
|
*/
|
|
#define RL_NSEG_NEW 32
|
|
error = bus_dma_tag_create(NULL, /* parent */
|
|
1, 0, /* alignment, boundary */
|
|
BUS_SPACE_MAXADDR_32BIT,/* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
MAXBSIZE, RL_NSEG_NEW, /* maxsize, nsegments */
|
|
BUS_SPACE_MAXSIZE_32BIT,/* maxsegsize */
|
|
BUS_DMA_ALLOCNOW, /* flags */
|
|
NULL, NULL, /* lockfunc, lockarg */
|
|
&sc->rl_parent_tag);
|
|
if (error)
|
|
goto fail;
|
|
|
|
error = re_allocmem(dev, sc);
|
|
|
|
if (error)
|
|
goto fail;
|
|
|
|
ifp = sc->rl_ifp = if_alloc(IFT_ETHER);
|
|
if (ifp == NULL) {
|
|
device_printf(dev, "can not if_alloc()\n");
|
|
error = ENOSPC;
|
|
goto fail;
|
|
}
|
|
|
|
/* Do MII setup */
|
|
if (mii_phy_probe(dev, &sc->rl_miibus,
|
|
re_ifmedia_upd, re_ifmedia_sts)) {
|
|
device_printf(dev, "MII without any phy!\n");
|
|
error = ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
ifp->if_softc = sc;
|
|
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
|
|
ifp->if_mtu = ETHERMTU;
|
|
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
|
|
ifp->if_ioctl = re_ioctl;
|
|
ifp->if_start = re_start;
|
|
ifp->if_hwassist = RE_CSUM_FEATURES;
|
|
ifp->if_capabilities = IFCAP_HWCSUM;
|
|
ifp->if_capenable = ifp->if_capabilities;
|
|
ifp->if_watchdog = re_watchdog;
|
|
ifp->if_init = re_init;
|
|
IFQ_SET_MAXLEN(&ifp->if_snd, RL_IFQ_MAXLEN);
|
|
ifp->if_snd.ifq_drv_maxlen = RL_IFQ_MAXLEN;
|
|
IFQ_SET_READY(&ifp->if_snd);
|
|
|
|
TASK_INIT(&sc->rl_txtask, 1, re_tx_task, ifp);
|
|
TASK_INIT(&sc->rl_inttask, 0, re_int_task, sc);
|
|
|
|
/*
|
|
* Call MI attach routine.
|
|
*/
|
|
ether_ifattach(ifp, eaddr);
|
|
|
|
/* 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);
|
|
|
|
#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.
|
|
*/
|
|
|
|
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;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* Hook interrupt last to avoid having to lock softc */
|
|
error = bus_setup_intr(dev, sc->rl_irq, INTR_TYPE_NET | INTR_MPSAFE |
|
|
INTR_FAST, re_intr, sc, &sc->rl_intrhand);
|
|
if (error) {
|
|
device_printf(dev, "couldn't set up irq\n");
|
|
ether_ifdetach(ifp);
|
|
}
|
|
|
|
fail:
|
|
|
|
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;
|
|
int i;
|
|
|
|
sc = device_get_softc(dev);
|
|
ifp = sc->rl_ifp;
|
|
KASSERT(mtx_initialized(&sc->rl_mtx), ("re mutex not initialized"));
|
|
|
|
#ifdef DEVICE_POLLING
|
|
if (ifp->if_capenable & IFCAP_POLLING)
|
|
ether_poll_deregister(ifp);
|
|
#endif
|
|
/* These should only be active if attach succeeded */
|
|
if (device_is_attached(dev)) {
|
|
RL_LOCK(sc);
|
|
#if 0
|
|
sc->suspended = 1;
|
|
#endif
|
|
re_stop(sc);
|
|
RL_UNLOCK(sc);
|
|
callout_drain(&sc->rl_stat_callout);
|
|
/*
|
|
* Force off the IFF_UP flag here, in case someone
|
|
* still had a BPF descriptor attached to this
|
|
* interface. If they do, ether_ifdetach() will cause
|
|
* 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;
|
|
ether_ifdetach(ifp);
|
|
}
|
|
if (sc->rl_miibus)
|
|
device_delete_child(dev, sc->rl_miibus);
|
|
bus_generic_detach(dev);
|
|
|
|
/*
|
|
* The rest is resource deallocation, so we should already be
|
|
* stopped here.
|
|
*/
|
|
|
|
if (sc->rl_intrhand)
|
|
bus_teardown_intr(dev, sc->rl_irq, sc->rl_intrhand);
|
|
if (ifp != NULL)
|
|
if_free(ifp);
|
|
if (sc->rl_irq)
|
|
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->rl_irq);
|
|
if (sc->rl_res)
|
|
bus_release_resource(dev, RL_RES, RL_RID, sc->rl_res);
|
|
|
|
/* Yield the CPU long enough for any tasks to drain */
|
|
|
|
tsleep(sc, PPAUSE, "rewait", hz);
|
|
|
|
/* 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 */
|
|
|
|
if (sc->rl_ldata.rl_mtag) {
|
|
for (i = 0; i < RL_TX_DESC_CNT; i++)
|
|
bus_dmamap_destroy(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_tx_dmamap[i]);
|
|
for (i = 0; i < RL_RX_DESC_CNT; i++)
|
|
bus_dmamap_destroy(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_rx_dmamap[i]);
|
|
bus_dma_tag_destroy(sc->rl_ldata.rl_mtag);
|
|
}
|
|
|
|
/* 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);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
re_newbuf(sc, idx, m)
|
|
struct rl_softc *sc;
|
|
int idx;
|
|
struct mbuf *m;
|
|
{
|
|
struct rl_dmaload_arg arg;
|
|
struct mbuf *n = NULL;
|
|
int error;
|
|
|
|
if (m == NULL) {
|
|
n = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
|
|
if (n == NULL)
|
|
return (ENOBUFS);
|
|
m = n;
|
|
} else
|
|
m->m_data = m->m_ext.ext_buf;
|
|
|
|
m->m_len = m->m_pkthdr.len = MCLBYTES;
|
|
#ifdef RE_FIXUP_RX
|
|
/*
|
|
* 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.
|
|
*/
|
|
m_adj(m, RE_ETHER_ALIGN);
|
|
#endif
|
|
arg.sc = sc;
|
|
arg.rl_idx = idx;
|
|
arg.rl_maxsegs = 1;
|
|
arg.rl_flags = 0;
|
|
arg.rl_ring = sc->rl_ldata.rl_rx_list;
|
|
|
|
error = bus_dmamap_load_mbuf(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_rx_dmamap[idx], m, re_dma_map_desc,
|
|
&arg, BUS_DMA_NOWAIT);
|
|
if (error || arg.rl_maxsegs != 1) {
|
|
if (n != NULL)
|
|
m_freem(n);
|
|
return (ENOMEM);
|
|
}
|
|
|
|
sc->rl_ldata.rl_rx_list[idx].rl_cmdstat |= htole32(RL_RDESC_CMD_OWN);
|
|
sc->rl_ldata.rl_rx_mbuf[idx] = m;
|
|
|
|
bus_dmamap_sync(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_rx_dmamap[idx],
|
|
BUS_DMASYNC_PREREAD);
|
|
|
|
return (0);
|
|
}
|
|
|
|
#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
|
|
|
|
static int
|
|
re_tx_list_init(sc)
|
|
struct rl_softc *sc;
|
|
{
|
|
|
|
RL_LOCK_ASSERT(sc);
|
|
|
|
bzero ((char *)sc->rl_ldata.rl_tx_list, RL_TX_LIST_SZ);
|
|
bzero ((char *)&sc->rl_ldata.rl_tx_mbuf,
|
|
(RL_TX_DESC_CNT * sizeof(struct mbuf *)));
|
|
|
|
bus_dmamap_sync(sc->rl_ldata.rl_tx_list_tag,
|
|
sc->rl_ldata.rl_tx_list_map, BUS_DMASYNC_PREWRITE);
|
|
sc->rl_ldata.rl_tx_prodidx = 0;
|
|
sc->rl_ldata.rl_tx_considx = 0;
|
|
sc->rl_ldata.rl_tx_free = RL_TX_DESC_CNT;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
re_rx_list_init(sc)
|
|
struct rl_softc *sc;
|
|
{
|
|
int i;
|
|
|
|
bzero ((char *)sc->rl_ldata.rl_rx_list, RL_RX_LIST_SZ);
|
|
bzero ((char *)&sc->rl_ldata.rl_rx_mbuf,
|
|
(RL_RX_DESC_CNT * sizeof(struct mbuf *)));
|
|
|
|
for (i = 0; i < RL_RX_DESC_CNT; i++) {
|
|
if (re_newbuf(sc, i, NULL) == ENOBUFS)
|
|
return (ENOBUFS);
|
|
}
|
|
|
|
/* 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;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
static int
|
|
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;
|
|
int maxpkt = 16;
|
|
|
|
RL_LOCK_ASSERT(sc);
|
|
|
|
ifp = sc->rl_ifp;
|
|
i = sc->rl_ldata.rl_rx_prodidx;
|
|
|
|
/* Invalidate the descriptor memory */
|
|
|
|
bus_dmamap_sync(sc->rl_ldata.rl_rx_list_tag,
|
|
sc->rl_ldata.rl_rx_list_map,
|
|
BUS_DMASYNC_POSTREAD);
|
|
|
|
while (!RL_OWN(&sc->rl_ldata.rl_rx_list[i]) && maxpkt) {
|
|
cur_rx = &sc->rl_ldata.rl_rx_list[i];
|
|
m = sc->rl_ldata.rl_rx_mbuf[i];
|
|
total_len = RL_RXBYTES(cur_rx);
|
|
rxstat = le32toh(cur_rx->rl_cmdstat);
|
|
rxvlan = le32toh(cur_rx->rl_vlanctl);
|
|
|
|
/* Invalidate the RX mbuf and unload its map */
|
|
|
|
bus_dmamap_sync(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_rx_dmamap[i],
|
|
BUS_DMASYNC_POSTWRITE);
|
|
bus_dmamap_unload(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_rx_dmamap[i]);
|
|
|
|
if (!(rxstat & RL_RDESC_STAT_EOF)) {
|
|
m->m_len = RE_RX_DESC_BUFLEN;
|
|
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;
|
|
}
|
|
re_newbuf(sc, i, NULL);
|
|
RL_DESC_INC(i);
|
|
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;
|
|
|
|
/*
|
|
* 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)) {
|
|
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;
|
|
}
|
|
re_newbuf(sc, i, m);
|
|
RL_DESC_INC(i);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If allocating a replacement mbuf fails,
|
|
* reload the current one.
|
|
*/
|
|
|
|
if (re_newbuf(sc, i, NULL)) {
|
|
ifp->if_ierrors++;
|
|
if (sc->rl_head != NULL) {
|
|
m_freem(sc->rl_head);
|
|
sc->rl_head = sc->rl_tail = NULL;
|
|
}
|
|
re_newbuf(sc, i, m);
|
|
RL_DESC_INC(i);
|
|
continue;
|
|
}
|
|
|
|
RL_DESC_INC(i);
|
|
|
|
if (sc->rl_head != NULL) {
|
|
m->m_len = total_len % RE_RX_DESC_BUFLEN;
|
|
if (m->m_len == 0)
|
|
m->m_len = RE_RX_DESC_BUFLEN;
|
|
/*
|
|
* 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);
|
|
|
|
#ifdef RE_FIXUP_RX
|
|
re_fixup_rx(m);
|
|
#endif
|
|
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;
|
|
}
|
|
}
|
|
maxpkt--;
|
|
if (rxvlan & RL_RDESC_VLANCTL_TAG) {
|
|
m->m_pkthdr.ether_vtag =
|
|
ntohs((rxvlan & RL_RDESC_VLANCTL_DATA));
|
|
m->m_flags |= M_VLANTAG;
|
|
}
|
|
RL_UNLOCK(sc);
|
|
(*ifp->if_input)(ifp, m);
|
|
RL_LOCK(sc);
|
|
}
|
|
|
|
/* 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;
|
|
|
|
if (maxpkt)
|
|
return(EAGAIN);
|
|
|
|
return(0);
|
|
}
|
|
|
|
static void
|
|
re_txeof(sc)
|
|
struct rl_softc *sc;
|
|
{
|
|
struct ifnet *ifp;
|
|
u_int32_t txstat;
|
|
int idx;
|
|
|
|
ifp = sc->rl_ifp;
|
|
idx = sc->rl_ldata.rl_tx_considx;
|
|
|
|
/* Invalidate the TX descriptor list */
|
|
|
|
bus_dmamap_sync(sc->rl_ldata.rl_tx_list_tag,
|
|
sc->rl_ldata.rl_tx_list_map,
|
|
BUS_DMASYNC_POSTREAD);
|
|
|
|
while (sc->rl_ldata.rl_tx_free < RL_TX_DESC_CNT) {
|
|
|
|
txstat = le32toh(sc->rl_ldata.rl_tx_list[idx].rl_cmdstat);
|
|
if (txstat & RL_TDESC_CMD_OWN)
|
|
break;
|
|
|
|
sc->rl_ldata.rl_tx_list[idx].rl_bufaddr_lo = 0;
|
|
|
|
/*
|
|
* 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) {
|
|
m_freem(sc->rl_ldata.rl_tx_mbuf[idx]);
|
|
sc->rl_ldata.rl_tx_mbuf[idx] = NULL;
|
|
bus_dmamap_unload(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_tx_dmamap[idx]);
|
|
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++;
|
|
RL_DESC_INC(idx);
|
|
}
|
|
|
|
/* No changes made to the TX ring, so no flush needed */
|
|
|
|
if (sc->rl_ldata.rl_tx_free) {
|
|
sc->rl_ldata.rl_tx_considx = idx;
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
ifp->if_timer = 0;
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
if (sc->rl_ldata.rl_tx_free < RL_TX_DESC_CNT)
|
|
CSR_WRITE_1(sc, sc->rl_txstart, RL_TXSTART_START);
|
|
|
|
#ifdef RE_TX_MODERATION
|
|
/*
|
|
* If not all descriptors have been released 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.
|
|
*/
|
|
if (sc->rl_ldata.rl_tx_free != RL_TX_DESC_CNT)
|
|
CSR_WRITE_4(sc, RL_TIMERCNT, 1);
|
|
#endif
|
|
|
|
}
|
|
|
|
static void
|
|
re_tick(xsc)
|
|
void *xsc;
|
|
{
|
|
struct rl_softc *sc;
|
|
struct mii_data *mii;
|
|
struct ifnet *ifp;
|
|
|
|
sc = xsc;
|
|
ifp = sc->rl_ifp;
|
|
|
|
RL_LOCK_ASSERT(sc);
|
|
|
|
mii = device_get_softc(sc->rl_miibus);
|
|
|
|
mii_tick(mii);
|
|
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);
|
|
}
|
|
}
|
|
|
|
callout_reset(&sc->rl_stat_callout, hz, re_tick, sc);
|
|
}
|
|
|
|
#ifdef DEVICE_POLLING
|
|
static void
|
|
re_poll(struct ifnet *ifp, enum poll_cmd cmd, int count)
|
|
{
|
|
struct rl_softc *sc = ifp->if_softc;
|
|
|
|
RL_LOCK(sc);
|
|
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
|
|
re_poll_locked(ifp, cmd, count);
|
|
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);
|
|
|
|
sc->rxcycles = count;
|
|
re_rxeof(sc);
|
|
re_txeof(sc);
|
|
|
|
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
|
|
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_txtask);
|
|
|
|
if (cmd == POLL_AND_CHECK_STATUS) { /* also check status register */
|
|
u_int16_t status;
|
|
|
|
status = CSR_READ_2(sc, RL_ISR);
|
|
if (status == 0xffff)
|
|
return;
|
|
if (status)
|
|
CSR_WRITE_2(sc, RL_ISR, status);
|
|
|
|
/*
|
|
* XXX check behaviour on receiver stalls.
|
|
*/
|
|
|
|
if (status & RL_ISR_SYSTEM_ERR) {
|
|
re_reset(sc);
|
|
re_init_locked(sc);
|
|
}
|
|
}
|
|
}
|
|
#endif /* DEVICE_POLLING */
|
|
|
|
static void
|
|
re_intr(arg)
|
|
void *arg;
|
|
{
|
|
struct rl_softc *sc;
|
|
struct ifnet *ifp;
|
|
uint16_t status;
|
|
|
|
sc = arg;
|
|
ifp = sc->rl_ifp;
|
|
|
|
status = CSR_READ_2(sc, RL_ISR);
|
|
if (status == 0xFFFF || (status & RL_INTRS_CPLUS) == 0)
|
|
return;
|
|
CSR_WRITE_2(sc, RL_IMR, 0);
|
|
|
|
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_inttask);
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
re_int_task(arg, npending)
|
|
void *arg;
|
|
int npending;
|
|
{
|
|
struct rl_softc *sc;
|
|
struct ifnet *ifp;
|
|
u_int16_t status;
|
|
int rval = 0;
|
|
|
|
sc = arg;
|
|
ifp = sc->rl_ifp;
|
|
|
|
RL_LOCK(sc);
|
|
|
|
status = CSR_READ_2(sc, RL_ISR);
|
|
CSR_WRITE_2(sc, RL_ISR, status);
|
|
|
|
if (sc->suspended || !(ifp->if_flags & IFF_UP)) {
|
|
RL_UNLOCK(sc);
|
|
return;
|
|
}
|
|
|
|
#ifdef DEVICE_POLLING
|
|
if (ifp->if_capenable & IFCAP_POLLING) {
|
|
RL_UNLOCK(sc);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
if (status & (RL_ISR_RX_OK|RL_ISR_RX_ERR|RL_ISR_FIFO_OFLOW))
|
|
rval = re_rxeof(sc);
|
|
|
|
#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);
|
|
|
|
if (status & RL_ISR_SYSTEM_ERR) {
|
|
re_reset(sc);
|
|
re_init_locked(sc);
|
|
}
|
|
|
|
if (status & RL_ISR_LINKCHG) {
|
|
callout_stop(&sc->rl_stat_callout);
|
|
re_tick(sc);
|
|
}
|
|
|
|
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
|
|
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_txtask);
|
|
|
|
RL_UNLOCK(sc);
|
|
|
|
if ((CSR_READ_2(sc, RL_ISR) & RL_INTRS_CPLUS) || rval) {
|
|
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_inttask);
|
|
return;
|
|
}
|
|
|
|
CSR_WRITE_2(sc, RL_IMR, RL_INTRS_CPLUS);
|
|
|
|
return;
|
|
}
|
|
|
|
static int
|
|
re_encap(sc, m_head, idx)
|
|
struct rl_softc *sc;
|
|
struct mbuf **m_head;
|
|
int *idx;
|
|
{
|
|
struct mbuf *m_new = NULL;
|
|
struct rl_dmaload_arg arg;
|
|
bus_dmamap_t map;
|
|
int error;
|
|
|
|
RL_LOCK_ASSERT(sc);
|
|
|
|
if (sc->rl_ldata.rl_tx_free <= 4)
|
|
return (EFBIG);
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
|
|
arg.rl_flags = 0;
|
|
|
|
if ((*m_head)->m_pkthdr.csum_flags & CSUM_IP)
|
|
arg.rl_flags |= RL_TDESC_CMD_IPCSUM;
|
|
if ((*m_head)->m_pkthdr.csum_flags & CSUM_TCP)
|
|
arg.rl_flags |= RL_TDESC_CMD_TCPCSUM;
|
|
if ((*m_head)->m_pkthdr.csum_flags & CSUM_UDP)
|
|
arg.rl_flags |= RL_TDESC_CMD_UDPCSUM;
|
|
|
|
arg.sc = sc;
|
|
arg.rl_idx = *idx;
|
|
arg.rl_maxsegs = sc->rl_ldata.rl_tx_free;
|
|
if (arg.rl_maxsegs > 4)
|
|
arg.rl_maxsegs -= 4;
|
|
arg.rl_ring = sc->rl_ldata.rl_tx_list;
|
|
|
|
map = sc->rl_ldata.rl_tx_dmamap[*idx];
|
|
|
|
/*
|
|
* 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
|
|
* to the minimum ethernet frame size. We do this by pretending
|
|
* the mbuf chain has too many fragments so the coalescing code
|
|
* below can assemble the packet into a single buffer that's
|
|
* padded out to the mininum frame size.
|
|
*/
|
|
|
|
if (arg.rl_flags && (*m_head)->m_pkthdr.len < RL_MIN_FRAMELEN)
|
|
error = EFBIG;
|
|
else
|
|
error = bus_dmamap_load_mbuf(sc->rl_ldata.rl_mtag, map,
|
|
*m_head, re_dma_map_desc, &arg, BUS_DMA_NOWAIT);
|
|
|
|
if (error && error != EFBIG) {
|
|
device_printf(sc->rl_dev, "can't map mbuf (error %d)\n", error);
|
|
return (ENOBUFS);
|
|
}
|
|
|
|
/* Too many segments to map, coalesce into a single mbuf */
|
|
|
|
if (error || arg.rl_maxsegs == 0) {
|
|
m_new = m_defrag(*m_head, M_DONTWAIT);
|
|
if (m_new == NULL)
|
|
return (ENOBUFS);
|
|
else
|
|
*m_head = m_new;
|
|
|
|
/*
|
|
* Manually pad short frames, and zero the pad space
|
|
* to avoid leaking data.
|
|
*/
|
|
|
|
if (m_new->m_pkthdr.len < RL_MIN_FRAMELEN) {
|
|
bzero(mtod(m_new, char *) + m_new->m_pkthdr.len,
|
|
RL_MIN_FRAMELEN - m_new->m_pkthdr.len);
|
|
m_new->m_pkthdr.len += RL_MIN_FRAMELEN -
|
|
m_new->m_pkthdr.len;
|
|
m_new->m_len = m_new->m_pkthdr.len;
|
|
}
|
|
|
|
arg.sc = sc;
|
|
arg.rl_idx = *idx;
|
|
arg.rl_maxsegs = sc->rl_ldata.rl_tx_free;
|
|
arg.rl_ring = sc->rl_ldata.rl_tx_list;
|
|
|
|
error = bus_dmamap_load_mbuf(sc->rl_ldata.rl_mtag, map,
|
|
*m_head, re_dma_map_desc, &arg, BUS_DMA_NOWAIT);
|
|
if (error) {
|
|
device_printf(sc->rl_dev, "can't map mbuf (error %d)\n",
|
|
error);
|
|
return (EFBIG);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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.)
|
|
*/
|
|
sc->rl_ldata.rl_tx_dmamap[*idx] =
|
|
sc->rl_ldata.rl_tx_dmamap[arg.rl_idx];
|
|
sc->rl_ldata.rl_tx_dmamap[arg.rl_idx] = map;
|
|
|
|
sc->rl_ldata.rl_tx_mbuf[arg.rl_idx] = *m_head;
|
|
sc->rl_ldata.rl_tx_free -= arg.rl_maxsegs;
|
|
|
|
/*
|
|
* Set up hardware VLAN tagging. Note: vlan tag info must
|
|
* appear in the first descriptor of a multi-descriptor
|
|
* transmission attempt.
|
|
*/
|
|
if ((*m_head)->m_flags & M_VLANTAG)
|
|
sc->rl_ldata.rl_tx_list[*idx].rl_vlanctl =
|
|
htole32(htons((*m_head)->m_pkthdr.ether_vtag) |
|
|
RL_TDESC_VLANCTL_TAG);
|
|
|
|
/* Transfer ownership of packet to the chip. */
|
|
|
|
sc->rl_ldata.rl_tx_list[arg.rl_idx].rl_cmdstat |=
|
|
htole32(RL_TDESC_CMD_OWN);
|
|
if (*idx != arg.rl_idx)
|
|
sc->rl_ldata.rl_tx_list[*idx].rl_cmdstat |=
|
|
htole32(RL_TDESC_CMD_OWN);
|
|
|
|
RL_DESC_INC(arg.rl_idx);
|
|
*idx = arg.rl_idx;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
re_tx_task(arg, npending)
|
|
void *arg;
|
|
int npending;
|
|
{
|
|
struct ifnet *ifp;
|
|
|
|
ifp = arg;
|
|
re_start(ifp);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Main transmit routine for C+ and gigE NICs.
|
|
*/
|
|
static void
|
|
re_start(ifp)
|
|
struct ifnet *ifp;
|
|
{
|
|
struct rl_softc *sc;
|
|
struct mbuf *m_head = NULL;
|
|
int idx, queued = 0;
|
|
|
|
sc = ifp->if_softc;
|
|
|
|
RL_LOCK(sc);
|
|
|
|
if (!sc->rl_link || ifp->if_drv_flags & IFF_DRV_OACTIVE) {
|
|
RL_UNLOCK(sc);
|
|
return;
|
|
}
|
|
|
|
idx = sc->rl_ldata.rl_tx_prodidx;
|
|
|
|
while (sc->rl_ldata.rl_tx_mbuf[idx] == NULL) {
|
|
IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
|
|
if (m_head == NULL)
|
|
break;
|
|
|
|
if (re_encap(sc, &m_head, &idx)) {
|
|
IFQ_DRV_PREPEND(&ifp->if_snd, m_head);
|
|
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* If there's a BPF listener, bounce a copy of this frame
|
|
* to him.
|
|
*/
|
|
BPF_MTAP(ifp, m_head);
|
|
|
|
queued++;
|
|
}
|
|
|
|
if (queued == 0) {
|
|
#ifdef RE_TX_MODERATION
|
|
if (sc->rl_ldata.rl_tx_free != RL_TX_DESC_CNT)
|
|
CSR_WRITE_4(sc, RL_TIMERCNT, 1);
|
|
#endif
|
|
RL_UNLOCK(sc);
|
|
return;
|
|
}
|
|
|
|
/* 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);
|
|
|
|
sc->rl_ldata.rl_tx_prodidx = idx;
|
|
|
|
/*
|
|
* RealTek put the TX poll request register in a different
|
|
* location on the 8169 gigE chip. I don't know why.
|
|
*/
|
|
|
|
CSR_WRITE_1(sc, sc->rl_txstart, RL_TXSTART_START);
|
|
|
|
#ifdef RE_TX_MODERATION
|
|
/*
|
|
* 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);
|
|
#endif
|
|
|
|
/*
|
|
* Set a timeout in case the chip goes out to lunch.
|
|
*/
|
|
|
|
ifp->if_timer = 5;
|
|
|
|
RL_UNLOCK(sc);
|
|
|
|
return;
|
|
}
|
|
|
|
static void
|
|
re_init(xsc)
|
|
void *xsc;
|
|
{
|
|
struct rl_softc *sc = xsc;
|
|
|
|
RL_LOCK(sc);
|
|
re_init_locked(sc);
|
|
RL_UNLOCK(sc);
|
|
}
|
|
|
|
static void
|
|
re_init_locked(sc)
|
|
struct rl_softc *sc;
|
|
{
|
|
struct ifnet *ifp = sc->rl_ifp;
|
|
struct mii_data *mii;
|
|
u_int32_t rxcfg = 0;
|
|
union {
|
|
uint32_t align_dummy;
|
|
u_char eaddr[ETHER_ADDR_LEN];
|
|
} eaddr;
|
|
|
|
RL_LOCK_ASSERT(sc);
|
|
|
|
mii = device_get_softc(sc->rl_miibus);
|
|
|
|
/*
|
|
* Cancel pending I/O and free all RX/TX buffers.
|
|
*/
|
|
re_stop(sc);
|
|
|
|
/*
|
|
* Enable C+ RX and TX mode, as well as VLAN stripping and
|
|
* RX checksum offload. We must configure the C+ register
|
|
* before all others.
|
|
*/
|
|
CSR_WRITE_2(sc, RL_CPLUS_CMD, RL_CPLUSCMD_RXENB|
|
|
RL_CPLUSCMD_TXENB|RL_CPLUSCMD_PCI_MRW|
|
|
RL_CPLUSCMD_VLANSTRIP|RL_CPLUSCMD_RXCSUM_ENB);
|
|
|
|
/*
|
|
* 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 on stack to align. */
|
|
bcopy(IF_LLADDR(ifp), eaddr.eaddr, ETHER_ADDR_LEN);
|
|
CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_WRITECFG);
|
|
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])));
|
|
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);
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
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
|
|
CSR_WRITE_4(sc, RL_TXCFG, RL_TXCFG_CONFIG);
|
|
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. */
|
|
if (ifp->if_flags & IFF_PROMISC)
|
|
rxcfg |= RL_RXCFG_RX_ALLPHYS;
|
|
else
|
|
rxcfg &= ~RL_RXCFG_RX_ALLPHYS;
|
|
CSR_WRITE_4(sc, RL_RXCFG, rxcfg);
|
|
|
|
/*
|
|
* Set capture broadcast bit to capture broadcast frames.
|
|
*/
|
|
if (ifp->if_flags & IFF_BROADCAST)
|
|
rxcfg |= RL_RXCFG_RX_BROAD;
|
|
else
|
|
rxcfg &= ~RL_RXCFG_RX_BROAD;
|
|
CSR_WRITE_4(sc, RL_RXCFG, rxcfg);
|
|
|
|
/*
|
|
* Program the multicast filter, if necessary.
|
|
*/
|
|
re_setmulti(sc);
|
|
|
|
#ifdef DEVICE_POLLING
|
|
/*
|
|
* Disable interrupts if we are polling.
|
|
*/
|
|
if (ifp->if_capenable & IFCAP_POLLING)
|
|
CSR_WRITE_2(sc, RL_IMR, 0);
|
|
else /* otherwise ... */
|
|
#endif
|
|
|
|
/*
|
|
* Enable interrupts.
|
|
*/
|
|
if (sc->rl_testmode)
|
|
CSR_WRITE_2(sc, RL_IMR, 0);
|
|
else
|
|
CSR_WRITE_2(sc, RL_IMR, RL_INTRS_CPLUS);
|
|
CSR_WRITE_2(sc, RL_ISR, RL_INTRS_CPLUS);
|
|
|
|
/* 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
|
|
/*
|
|
* 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));
|
|
|
|
CSR_WRITE_1(sc, RL_EARLY_TX_THRESH, 16);
|
|
|
|
#ifdef RE_TX_MODERATION
|
|
/*
|
|
* 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);
|
|
#endif
|
|
|
|
/*
|
|
* 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);
|
|
|
|
if (sc->rl_testmode)
|
|
return;
|
|
|
|
mii_mediachg(mii);
|
|
|
|
CSR_WRITE_1(sc, RL_CFG1, CSR_READ_1(sc, RL_CFG1) | RL_CFG1_DRVLOAD);
|
|
|
|
ifp->if_drv_flags |= IFF_DRV_RUNNING;
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
|
|
|
|
sc->rl_link = 0;
|
|
|
|
callout_reset(&sc->rl_stat_callout, hz, re_tick, sc);
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
RL_LOCK(sc);
|
|
mii_mediachg(mii);
|
|
RL_UNLOCK(sc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Report current media status.
|
|
*/
|
|
static void
|
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re_ifmedia_sts(ifp, ifmr)
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struct ifnet *ifp;
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struct ifmediareq *ifmr;
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{
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struct rl_softc *sc;
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struct mii_data *mii;
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sc = ifp->if_softc;
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mii = device_get_softc(sc->rl_miibus);
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RL_LOCK(sc);
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mii_pollstat(mii);
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RL_UNLOCK(sc);
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ifmr->ifm_active = mii->mii_media_active;
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ifmr->ifm_status = mii->mii_media_status;
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}
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static int
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re_ioctl(ifp, command, data)
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struct ifnet *ifp;
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u_long command;
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caddr_t data;
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{
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struct rl_softc *sc = ifp->if_softc;
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struct ifreq *ifr = (struct ifreq *) data;
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struct mii_data *mii;
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int error = 0;
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switch (command) {
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case SIOCSIFMTU:
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RL_LOCK(sc);
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if (ifr->ifr_mtu > RL_JUMBO_MTU)
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error = EINVAL;
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ifp->if_mtu = ifr->ifr_mtu;
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RL_UNLOCK(sc);
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break;
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case SIOCSIFFLAGS:
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RL_LOCK(sc);
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if (ifp->if_flags & IFF_UP)
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re_init_locked(sc);
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else if (ifp->if_drv_flags & IFF_DRV_RUNNING)
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re_stop(sc);
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RL_UNLOCK(sc);
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break;
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case SIOCADDMULTI:
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case SIOCDELMULTI:
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RL_LOCK(sc);
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re_setmulti(sc);
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RL_UNLOCK(sc);
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break;
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case SIOCGIFMEDIA:
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case SIOCSIFMEDIA:
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mii = device_get_softc(sc->rl_miibus);
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error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
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break;
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case SIOCSIFCAP:
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{
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int mask, reinit;
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mask = ifr->ifr_reqcap ^ ifp->if_capenable;
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reinit = 0;
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#ifdef DEVICE_POLLING
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if (mask & IFCAP_POLLING) {
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if (ifr->ifr_reqcap & IFCAP_POLLING) {
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error = ether_poll_register(re_poll, ifp);
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if (error)
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return(error);
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RL_LOCK(sc);
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/* Disable interrupts */
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CSR_WRITE_2(sc, RL_IMR, 0x0000);
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ifp->if_capenable |= IFCAP_POLLING;
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RL_UNLOCK(sc);
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} else {
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error = ether_poll_deregister(ifp);
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/* Enable interrupts. */
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RL_LOCK(sc);
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CSR_WRITE_2(sc, RL_IMR, RL_INTRS_CPLUS);
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ifp->if_capenable &= ~IFCAP_POLLING;
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RL_UNLOCK(sc);
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}
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}
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#endif /* DEVICE_POLLING */
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if (mask & IFCAP_HWCSUM) {
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ifp->if_capenable ^= IFCAP_HWCSUM;
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if (ifp->if_capenable & IFCAP_TXCSUM)
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ifp->if_hwassist = RE_CSUM_FEATURES;
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else
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ifp->if_hwassist = 0;
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reinit = 1;
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}
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if (mask & IFCAP_VLAN_HWTAGGING) {
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ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
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reinit = 1;
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}
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if (reinit && ifp->if_drv_flags & IFF_DRV_RUNNING)
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re_init(sc);
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VLAN_CAPABILITIES(ifp);
|
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}
|
|
break;
|
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default:
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|
error = ether_ioctl(ifp, command, data);
|
|
break;
|
|
}
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|
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|
return (error);
|
|
}
|
|
|
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static void
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|
re_watchdog(ifp)
|
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struct ifnet *ifp;
|
|
{
|
|
struct rl_softc *sc;
|
|
|
|
sc = ifp->if_softc;
|
|
RL_LOCK(sc);
|
|
if_printf(ifp, "watchdog timeout\n");
|
|
ifp->if_oerrors++;
|
|
|
|
re_txeof(sc);
|
|
re_rxeof(sc);
|
|
re_init_locked(sc);
|
|
|
|
RL_UNLOCK(sc);
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
|
|
RL_LOCK_ASSERT(sc);
|
|
|
|
ifp = sc->rl_ifp;
|
|
ifp->if_timer = 0;
|
|
|
|
callout_stop(&sc->rl_stat_callout);
|
|
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
|
|
|
|
CSR_WRITE_1(sc, RL_COMMAND, 0x00);
|
|
CSR_WRITE_2(sc, RL_IMR, 0x0000);
|
|
CSR_WRITE_2(sc, RL_ISR, 0xFFFF);
|
|
|
|
if (sc->rl_head != NULL) {
|
|
m_freem(sc->rl_head);
|
|
sc->rl_head = sc->rl_tail = NULL;
|
|
}
|
|
|
|
/* Free the TX list buffers. */
|
|
|
|
for (i = 0; i < RL_TX_DESC_CNT; i++) {
|
|
if (sc->rl_ldata.rl_tx_mbuf[i] != NULL) {
|
|
bus_dmamap_unload(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_tx_dmamap[i]);
|
|
m_freem(sc->rl_ldata.rl_tx_mbuf[i]);
|
|
sc->rl_ldata.rl_tx_mbuf[i] = NULL;
|
|
}
|
|
}
|
|
|
|
/* Free the RX list buffers. */
|
|
|
|
for (i = 0; i < RL_RX_DESC_CNT; i++) {
|
|
if (sc->rl_ldata.rl_rx_mbuf[i] != NULL) {
|
|
bus_dmamap_unload(sc->rl_ldata.rl_mtag,
|
|
sc->rl_ldata.rl_rx_dmamap[i]);
|
|
m_freem(sc->rl_ldata.rl_rx_mbuf[i]);
|
|
sc->rl_ldata.rl_rx_mbuf[i] = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
|
|
RL_LOCK(sc);
|
|
re_stop(sc);
|
|
sc->suspended = 1;
|
|
RL_UNLOCK(sc);
|
|
|
|
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);
|
|
|
|
RL_LOCK(sc);
|
|
|
|
ifp = sc->rl_ifp;
|
|
|
|
/* reinitialize interface if necessary */
|
|
if (ifp->if_flags & IFF_UP)
|
|
re_init_locked(sc);
|
|
|
|
sc->suspended = 0;
|
|
RL_UNLOCK(sc);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Stop all chip I/O so that the kernel's probe routines don't
|
|
* get confused by errant DMAs when rebooting.
|
|
*/
|
|
static void
|
|
re_shutdown(dev)
|
|
device_t dev;
|
|
{
|
|
struct rl_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
RL_LOCK(sc);
|
|
re_stop(sc);
|
|
/*
|
|
* Mark interface as down since otherwise we will panic if
|
|
* interrupt comes in later on, which can happen in some
|
|
* cases.
|
|
*/
|
|
sc->rl_ifp->if_flags &= ~IFF_UP;
|
|
RL_UNLOCK(sc);
|
|
}
|