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c2d2e19cb7
freebsd/sys/dev/re/if_re.c
Pyun YongHyeon c2d2e19cb7 Reclaim transmitted frames in re_tick(). This is for PCIe 
controllers that lose Tx completion interrupts under certain
conditions. With this change it's safe to use MSI on PCIe
controllers so enable MSI on these controllers.
2009-02-09 04:59:13 +00:00

3118 lines
80 KiB
C
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/*-
* Copyright (c) 1997, 1998-2003
* Bill Paul <wpaul@windriver.com>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* RealTek 8139C+/8169/8169S/8110S/8168/8111/8101E PCI NIC driver
*
* Written by Bill Paul <wpaul@windriver.com>
* Senior Networking Software Engineer
* Wind River Systems
*/
/*
* This driver is designed to support RealTek's next generation of
* 10/100 and 10/100/1000 PCI ethernet controllers. There are currently
* seven devices in this family: the RTL8139C+, the RTL8169, the RTL8169S,
* RTL8110S, the RTL8168, the RTL8111 and the RTL8101E.
*
* The 8139C+ is a 10/100 ethernet chip. It is backwards compatible
* with the older 8139 family, however it also supports a special
* C+ mode of operation that provides several new performance enhancing
* features. These include:
*
* o Descriptor based DMA mechanism. Each descriptor represents
* a single packet fragment. Data buffers may be aligned on
* any byte boundary.
*
* o 64-bit DMA
*
* o TCP/IP checksum offload for both RX and TX
*
* o High and normal priority transmit DMA rings
*
* o VLAN tag insertion and extraction
*
* o TCP large send (segmentation offload)
*
* Like the 8139, the 8139C+ also has a built-in 10/100 PHY. The C+
* programming API is fairly straightforward. The RX filtering, EEPROM
* access and PHY access is the same as it is on the older 8139 series
* chips.
*
* The 8169 is a 64-bit 10/100/1000 gigabit ethernet MAC. It has almost the
* same programming API and feature set as the 8139C+ with the following
* differences and additions:
*
* o 1000Mbps mode
*
* o Jumbo frames
*
* o GMII and TBI ports/registers for interfacing with copper
* or fiber PHYs
*
* o RX and TX DMA rings can have up to 1024 descriptors
* (the 8139C+ allows a maximum of 64)
*
* o Slight differences in register layout from the 8139C+
*
* The TX start and timer interrupt registers are at different locations
* on the 8169 than they are on the 8139C+. Also, the status word in the
* RX descriptor has a slightly different bit layout. The 8169 does not
* have a built-in PHY. Most reference boards use a Marvell 88E1000 'Alaska'
* copper gigE PHY.
*
* The 8169S/8110S 10/100/1000 devices have built-in copper gigE PHYs
* (the 'S' stands for 'single-chip'). These devices have the same
* programming API as the older 8169, but also have some vendor-specific
* registers for the on-board PHY. The 8110S is a LAN-on-motherboard
* part designed to be pin-compatible with the RealTek 8100 10/100 chip.
*
* This driver takes advantage of the RX and TX checksum offload and
* VLAN tag insertion/extraction features. It also implements TX
* interrupt moderation using the timer interrupt registers, which
* significantly reduces TX interrupt load. There is also support
* for jumbo frames, however the 8169/8169S/8110S can not transmit
* jumbo frames larger than 7440, so the max MTU possible with this
* driver is 7422 bytes.
*/
#ifdef HAVE_KERNEL_OPTION_HEADERS
#include "opt_device_polling.h"
#endif
#include <sys/param.h>
#include <sys/endian.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/taskqueue.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/ethernet.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/if_vlan_var.h>
#include <net/bpf.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <dev/mii/mii.h>
#include <dev/mii/miivar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <pci/if_rlreg.h>
MODULE_DEPEND(re, pci, 1, 1, 1);
MODULE_DEPEND(re, ether, 1, 1, 1);
MODULE_DEPEND(re, miibus, 1, 1, 1);
/* "device miibus" required. See GENERIC if you get errors here. */
#include "miibus_if.h"
/* Tunables. */
static int msi_disable = 0;
TUNABLE_INT("hw.re.msi_disable", &msi_disable);
#define RE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
/*
* Various supported device vendors/types and their names.
*/
static struct rl_type re_devs[] = {
{ DLINK_VENDORID, DLINK_DEVICEID_528T, 0,
"D-Link DGE-528(T) Gigabit Ethernet Adapter" },
{ RT_VENDORID, RT_DEVICEID_8139, 0,
"RealTek 8139C+ 10/100BaseTX" },
{ RT_VENDORID, RT_DEVICEID_8101E, 0,
"RealTek 8101E/8102E/8102EL PCIe 10/100baseTX" },
{ RT_VENDORID, RT_DEVICEID_8168, 0,
"RealTek 8168/8168B/8168C/8168CP/8168D/8111B/8111C/8111CP PCIe "
"Gigabit Ethernet" },
{ RT_VENDORID, RT_DEVICEID_8169, 0,
"RealTek 8169/8169S/8169SB(L)/8110S/8110SB(L) Gigabit Ethernet" },
{ RT_VENDORID, RT_DEVICEID_8169SC, 0,
"RealTek 8169SC/8110SC Single-chip Gigabit Ethernet" },
{ COREGA_VENDORID, COREGA_DEVICEID_CGLAPCIGT, 0,
"Corega CG-LAPCIGT (RTL8169S) Gigabit Ethernet" },
{ LINKSYS_VENDORID, LINKSYS_DEVICEID_EG1032, 0,
"Linksys EG1032 (RTL8169S) Gigabit Ethernet" },
{ USR_VENDORID, USR_DEVICEID_997902, 0,
"US Robotics 997902 (RTL8169S) Gigabit Ethernet" }
};
static struct rl_hwrev re_hwrevs[] = {
{ RL_HWREV_8139, RL_8139, "" },
{ RL_HWREV_8139A, RL_8139, "A" },
{ RL_HWREV_8139AG, RL_8139, "A-G" },
{ RL_HWREV_8139B, RL_8139, "B" },
{ RL_HWREV_8130, RL_8139, "8130" },
{ RL_HWREV_8139C, RL_8139, "C" },
{ RL_HWREV_8139D, RL_8139, "8139D/8100B/8100C" },
{ RL_HWREV_8139CPLUS, RL_8139CPLUS, "C+"},
{ RL_HWREV_8168_SPIN1, RL_8169, "8168"},
{ RL_HWREV_8169, RL_8169, "8169"},
{ RL_HWREV_8169S, RL_8169, "8169S"},
{ RL_HWREV_8110S, RL_8169, "8110S"},
{ RL_HWREV_8169_8110SB, RL_8169, "8169SB/8110SB"},
{ RL_HWREV_8169_8110SC, RL_8169, "8169SC/8110SC"},
{ RL_HWREV_8169_8110SBL, RL_8169, "8169SBL/8110SBL"},
{ RL_HWREV_8169_8110SCE, RL_8169, "8169SC/8110SC"},
{ RL_HWREV_8100, RL_8139, "8100"},
{ RL_HWREV_8101, RL_8139, "8101"},
{ RL_HWREV_8100E, RL_8169, "8100E"},
{ RL_HWREV_8101E, RL_8169, "8101E"},
{ RL_HWREV_8102E, RL_8169, "8102E"},
{ RL_HWREV_8102EL, RL_8169, "8102EL"},
{ RL_HWREV_8168_SPIN2, RL_8169, "8168"},
{ RL_HWREV_8168_SPIN3, RL_8169, "8168"},
{ RL_HWREV_8168C, RL_8169, "8168C/8111C"},
{ RL_HWREV_8168C_SPIN2, RL_8169, "8168C/8111C"},
{ RL_HWREV_8168CP, RL_8169, "8168CP/8111CP"},
{ RL_HWREV_8168D, RL_8169, "8168D"},
{ 0, 0, NULL }
};
static int re_probe (device_t);
static int re_attach (device_t);
static int re_detach (device_t);
static int re_encap (struct rl_softc *, struct mbuf **);
static void re_dma_map_addr (void *, bus_dma_segment_t *, int, int);
static int re_allocmem (device_t, struct rl_softc *);
static __inline void re_discard_rxbuf
(struct rl_softc *, int);
static int re_newbuf (struct rl_softc *, int);
static int re_rx_list_init (struct rl_softc *);
static int re_tx_list_init (struct rl_softc *);
#ifdef RE_FIXUP_RX
static __inline void re_fixup_rx
(struct mbuf *);
#endif
static int re_rxeof (struct rl_softc *);
static void re_txeof (struct rl_softc *);
#ifdef DEVICE_POLLING
static void re_poll (struct ifnet *, enum poll_cmd, int);
static void re_poll_locked (struct ifnet *, enum poll_cmd, int);
#endif
static int re_intr (void *);
static void re_tick (void *);
static void re_tx_task (void *, int);
static void re_int_task (void *, int);
static void re_start (struct ifnet *);
static int re_ioctl (struct ifnet *, u_long, caddr_t);
static void re_init (void *);
static void re_init_locked (struct rl_softc *);
static void re_stop (struct rl_softc *);
static void re_watchdog (struct rl_softc *);
static int re_suspend (device_t);
static int re_resume (device_t);
static int re_shutdown (device_t);
static int re_ifmedia_upd (struct ifnet *);
static void re_ifmedia_sts (struct ifnet *, struct ifmediareq *);
static void re_eeprom_putbyte (struct rl_softc *, int);
static void re_eeprom_getword (struct rl_softc *, int, u_int16_t *);
static void re_read_eeprom (struct rl_softc *, caddr_t, int, int);
static int re_gmii_readreg (device_t, int, int);
static int re_gmii_writereg (device_t, int, int, int);
static int re_miibus_readreg (device_t, int, int);
static int re_miibus_writereg (device_t, int, int, int);
static void re_miibus_statchg (device_t);
static void re_set_rxmode (struct rl_softc *);
static void re_reset (struct rl_softc *);
static void re_setwol (struct rl_softc *);
static void re_clrwol (struct rl_softc *);
#ifdef RE_DIAG
static int re_diag (struct rl_softc *);
#endif
static device_method_t re_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, re_probe),
DEVMETHOD(device_attach, re_attach),
DEVMETHOD(device_detach, re_detach),
DEVMETHOD(device_suspend, re_suspend),
DEVMETHOD(device_resume, re_resume),
DEVMETHOD(device_shutdown, re_shutdown),
/* bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
/* MII interface */
DEVMETHOD(miibus_readreg, re_miibus_readreg),
DEVMETHOD(miibus_writereg, re_miibus_writereg),
DEVMETHOD(miibus_statchg, re_miibus_statchg),
{ 0, 0 }
};
static driver_t re_driver = {
"re",
re_methods,
sizeof(struct rl_softc)
};
static devclass_t re_devclass;
DRIVER_MODULE(re, pci, re_driver, re_devclass, 0, 0);
DRIVER_MODULE(re, cardbus, re_driver, re_devclass, 0, 0);
DRIVER_MODULE(miibus, re, miibus_driver, miibus_devclass, 0, 0);
#define EE_SET(x) \
CSR_WRITE_1(sc, RL_EECMD, \
CSR_READ_1(sc, RL_EECMD) | x)
#define EE_CLR(x) \
CSR_WRITE_1(sc, RL_EECMD, \
CSR_READ_1(sc, RL_EECMD) & ~x)
/*
* Send a read command and address to the EEPROM, check for ACK.
*/
static void
re_eeprom_putbyte(struct rl_softc *sc, int addr)
{
int d, i;
d = addr | (RL_9346_READ << sc->rl_eewidth);
/*
* Feed in each bit and strobe the clock.
*/
for (i = 1 << (sc->rl_eewidth + 3); i; i >>= 1) {
if (d & i) {
EE_SET(RL_EE_DATAIN);
} else {
EE_CLR(RL_EE_DATAIN);
}
DELAY(100);
EE_SET(RL_EE_CLK);
DELAY(150);
EE_CLR(RL_EE_CLK);
DELAY(100);
}
}
/*
* Read a word of data stored in the EEPROM at address 'addr.'
*/
static void
re_eeprom_getword(struct rl_softc *sc, int addr, u_int16_t *dest)
{
int i;
u_int16_t word = 0;
/*
* Send address of word we want to read.
*/
re_eeprom_putbyte(sc, addr);
/*
* Start reading bits from EEPROM.
*/
for (i = 0x8000; i; i >>= 1) {
EE_SET(RL_EE_CLK);
DELAY(100);
if (CSR_READ_1(sc, RL_EECMD) & RL_EE_DATAOUT)
word |= i;
EE_CLR(RL_EE_CLK);
DELAY(100);
}
*dest = word;
}
/*
* Read a sequence of words from the EEPROM.
*/
static void
re_read_eeprom(struct rl_softc *sc, caddr_t dest, int off, int cnt)
{
int i;
u_int16_t word = 0, *ptr;
CSR_SETBIT_1(sc, RL_EECMD, RL_EEMODE_PROGRAM);
DELAY(100);
for (i = 0; i < cnt; i++) {
CSR_SETBIT_1(sc, RL_EECMD, RL_EE_SEL);
re_eeprom_getword(sc, off + i, &word);
CSR_CLRBIT_1(sc, RL_EECMD, RL_EE_SEL);
ptr = (u_int16_t *)(dest + (i * 2));
*ptr = word;
}
CSR_CLRBIT_1(sc, RL_EECMD, RL_EEMODE_PROGRAM);
}
static int
re_gmii_readreg(device_t dev, int phy, int reg)
{
struct rl_softc *sc;
u_int32_t rval;
int i;
if (phy != 1)
return (0);
sc = device_get_softc(dev);
/* Let the rgephy driver read the GMEDIASTAT register */
if (reg == RL_GMEDIASTAT) {
rval = CSR_READ_1(sc, RL_GMEDIASTAT);
return (rval);
}
CSR_WRITE_4(sc, RL_PHYAR, reg << 16);
for (i = 0; i < RL_PHY_TIMEOUT; i++) {
rval = CSR_READ_4(sc, RL_PHYAR);
if (rval & RL_PHYAR_BUSY)
break;
DELAY(100);
}
if (i == RL_PHY_TIMEOUT) {
device_printf(sc->rl_dev, "PHY read failed\n");
return (0);
}
return (rval & RL_PHYAR_PHYDATA);
}
static int
re_gmii_writereg(device_t dev, int phy, int reg, int 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);
for (i = 0; i < RL_PHY_TIMEOUT; i++) {
rval = CSR_READ_4(sc, RL_PHYAR);
if (!(rval & RL_PHYAR_BUSY))
break;
DELAY(100);
}
if (i == RL_PHY_TIMEOUT) {
device_printf(sc->rl_dev, "PHY write failed\n");
return (0);
}
return (0);
}
static int
re_miibus_readreg(device_t dev, int phy, int 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(device_t dev, int phy, int reg, int 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(device_t dev)
{
struct rl_softc *sc;
struct ifnet *ifp;
struct mii_data *mii;
sc = device_get_softc(dev);
mii = device_get_softc(sc->rl_miibus);
ifp = sc->rl_ifp;
if (mii == NULL || ifp == NULL ||
(ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
return;
sc->rl_flags &= ~RL_FLAG_LINK;
if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
(IFM_ACTIVE | IFM_AVALID)) {
switch (IFM_SUBTYPE(mii->mii_media_active)) {
case IFM_10_T:
case IFM_100_TX:
sc->rl_flags |= RL_FLAG_LINK;
break;
case IFM_1000_T:
if ((sc->rl_flags & RL_FLAG_FASTETHER) != 0)
break;
sc->rl_flags |= RL_FLAG_LINK;
break;
default:
break;
}
}
/*
* RealTek controllers does not provide any interface to
* Tx/Rx MACs for resolved speed, duplex and flow-control
* parameters.
*/
}
/*
* Set the RX configuration and 64-bit multicast hash filter.
*/
static void
re_set_rxmode(struct rl_softc *sc)
{
struct ifnet *ifp;
struct ifmultiaddr *ifma;
uint32_t hashes[2] = { 0, 0 };
uint32_t h, rxfilt;
RL_LOCK_ASSERT(sc);
ifp = sc->rl_ifp;
rxfilt = RL_RXCFG_CONFIG | RL_RXCFG_RX_INDIV | RL_RXCFG_RX_BROAD;
if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
if (ifp->if_flags & IFF_PROMISC)
rxfilt |= RL_RXCFG_RX_ALLPHYS;
/*
* Unlike other hardwares, we have to explicitly set
* RL_RXCFG_RX_MULTI to receive multicast frames in
* promiscuous mode.
*/
rxfilt |= RL_RXCFG_RX_MULTI;
hashes[0] = hashes[1] = 0xffffffff;
goto done;
}
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));
}
IF_ADDR_UNLOCK(ifp);
if (hashes[0] != 0 || hashes[1] != 0) {
/*
* For some unfathomable reason, RealTek decided to
* reverse the order of the multicast hash registers
* in the PCI Express parts. This means we have to
* write the hash pattern in reverse order for those
* devices.
*/
if ((sc->rl_flags & RL_FLAG_PCIE) != 0) {
h = bswap32(hashes[0]);
hashes[0] = bswap32(hashes[1]);
hashes[1] = h;
}
rxfilt |= RL_RXCFG_RX_MULTI;
}
done:
CSR_WRITE_4(sc, RL_MAR0, hashes[0]);
CSR_WRITE_4(sc, RL_MAR4, hashes[1]);
CSR_WRITE_4(sc, RL_RXCFG, rxfilt);
}
static void
re_reset(struct rl_softc *sc)
{
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");
if ((sc->rl_flags & RL_FLAG_MACRESET) != 0)
CSR_WRITE_1(sc, 0x82, 1);
if (sc->rl_hwrev == RL_HWREV_8169S)
re_gmii_writereg(sc->rl_dev, 1, 0x0b, 0);
}
#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(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_init_locked(sc);
sc->rl_flags |= RL_FLAG_LINK;
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_rx_mtag,
sc->rl_ldata.rl_rx_desc[0].rx_dmamap,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->rl_ldata.rl_rx_mtag,
sc->rl_ldata.rl_rx_desc[0].rx_dmamap);
m0 = sc->rl_ldata.rl_rx_desc[0].rx_m;
sc->rl_ldata.rl_rx_desc[0].rx_m = NULL;
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_flags &= ~RL_FLAG_LINK;
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(device_t dev)
{
struct rl_type *t;
uint16_t devid, vendor;
uint16_t revid, sdevid;
int i;
vendor = pci_get_vendor(dev);
devid = pci_get_device(dev);
revid = pci_get_revid(dev);
sdevid = pci_get_subdevice(dev);
if (vendor == LINKSYS_VENDORID && devid == LINKSYS_DEVICEID_EG1032) {
if (sdevid != LINKSYS_SUBDEVICE_EG1032_REV3) {
/*
* Only attach to rev. 3 of the Linksys EG1032 adapter.
* Rev. 2 is supported by sk(4).
*/
return (ENXIO);
}
}
if (vendor == RT_VENDORID && devid == RT_DEVICEID_8139) {
if (revid != 0x20) {
/* 8139, let rl(4) take care of this device. */
return (ENXIO);
}
}
t = re_devs;
for (i = 0; i < sizeof(re_devs) / sizeof(re_devs[0]); i++, t++) {
if (vendor == t->rl_vid && devid == t->rl_did) {
device_set_desc(dev, t->rl_name);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
/*
* Map a single buffer address.
*/
static void
re_dma_map_addr(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(device_t dev, struct rl_softc *sc)
{
bus_size_t rx_list_size, tx_list_size;
int error;
int i;
rx_list_size = sc->rl_ldata.rl_rx_desc_cnt * sizeof(struct rl_desc);
tx_list_size = sc->rl_ldata.rl_tx_desc_cnt * sizeof(struct rl_desc);
/*
* Allocate the parent bus DMA tag appropriate for PCI.
* In order to use DAC, RL_CPLUSCMD_PCI_DAC bit of RL_CPLUS_CMD
* register should be set. However some RealTek chips are known
* to be buggy on DAC handling, therefore disable DAC by limiting
* DMA address space to 32bit. PCIe variants of RealTek chips
* may not have the limitation but I took safer path.
*/
error = bus_dma_tag_create(bus_get_dma_tag(dev), 1, 0,
BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL,
BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0,
NULL, NULL, &sc->rl_parent_tag);
if (error) {
device_printf(dev, "could not allocate parent DMA tag\n");
return (error);
}
/*
* Allocate map for TX mbufs.
*/
error = bus_dma_tag_create(sc->rl_parent_tag, 1, 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL,
NULL, MCLBYTES * RL_NTXSEGS, RL_NTXSEGS, 4096, 0,
NULL, NULL, &sc->rl_ldata.rl_tx_mtag);
if (error) {
device_printf(dev, "could not allocate TX DMA tag\n");
return (error);
}
/*
* Allocate map for RX mbufs.
*/
error = bus_dma_tag_create(sc->rl_parent_tag, sizeof(uint64_t), 0,
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
MCLBYTES, 1, MCLBYTES, 0, NULL, NULL, &sc->rl_ldata.rl_rx_mtag);
if (error) {
device_printf(dev, "could not allocate RX DMA tag\n");
return (error);
}
/*
* 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, tx_list_size, 1, tx_list_size, 0,
NULL, NULL, &sc->rl_ldata.rl_tx_list_tag);
if (error) {
device_printf(dev, "could not allocate TX DMA ring tag\n");
return (error);
}
/* 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_WAITOK | BUS_DMA_COHERENT | BUS_DMA_ZERO,
&sc->rl_ldata.rl_tx_list_map);
if (error) {
device_printf(dev, "could not allocate TX DMA ring\n");
return (error);
}
/* Load the map for the TX ring. */
sc->rl_ldata.rl_tx_list_addr = 0;
error = bus_dmamap_load(sc->rl_ldata.rl_tx_list_tag,
sc->rl_ldata.rl_tx_list_map, sc->rl_ldata.rl_tx_list,
tx_list_size, re_dma_map_addr,
&sc->rl_ldata.rl_tx_list_addr, BUS_DMA_NOWAIT);
if (error != 0 || sc->rl_ldata.rl_tx_list_addr == 0) {
device_printf(dev, "could not load TX DMA ring\n");
return (ENOMEM);
}
/* Create DMA maps for TX buffers */
for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++) {
error = bus_dmamap_create(sc->rl_ldata.rl_tx_mtag, 0,
&sc->rl_ldata.rl_tx_desc[i].tx_dmamap);
if (error) {
device_printf(dev, "could not create DMA map for TX\n");
return (error);
}
}
/*
* 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, rx_list_size, 1, rx_list_size, 0,
NULL, NULL, &sc->rl_ldata.rl_rx_list_tag);
if (error) {
device_printf(dev, "could not create RX DMA ring tag\n");
return (error);
}
/* 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_WAITOK | BUS_DMA_COHERENT | BUS_DMA_ZERO,
&sc->rl_ldata.rl_rx_list_map);
if (error) {
device_printf(dev, "could not allocate RX DMA ring\n");
return (error);
}
/* Load the map for the RX ring. */
sc->rl_ldata.rl_rx_list_addr = 0;
error = bus_dmamap_load(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list_map, sc->rl_ldata.rl_rx_list,
rx_list_size, re_dma_map_addr,
&sc->rl_ldata.rl_rx_list_addr, BUS_DMA_NOWAIT);
if (error != 0 || sc->rl_ldata.rl_rx_list_addr == 0) {
device_printf(dev, "could not load RX DMA ring\n");
return (ENOMEM);
}
/* Create DMA maps for RX buffers */
error = bus_dmamap_create(sc->rl_ldata.rl_rx_mtag, 0,
&sc->rl_ldata.rl_rx_sparemap);
if (error) {
device_printf(dev, "could not create spare DMA map for RX\n");
return (error);
}
for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++) {
error = bus_dmamap_create(sc->rl_ldata.rl_rx_mtag, 0,
&sc->rl_ldata.rl_rx_desc[i].rx_dmamap);
if (error) {
device_printf(dev, "could not create DMA map for RX\n");
return (error);
}
}
return (0);
}
/*
* Attach the interface. Allocate softc structures, do ifmedia
* setup and ethernet/BPF attach.
*/
static int
re_attach(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 devid, re_did = 0;
int error = 0, rid, i;
int msic, reg;
uint8_t cfg;
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);
devid = pci_get_device(dev);
/* Prefer memory space register mapping over IO space. */
sc->rl_res_id = PCIR_BAR(1);
sc->rl_res_type = SYS_RES_MEMORY;
/* RTL8168/8101E seems to use different BARs. */
if (devid == RT_DEVICEID_8168 || devid == RT_DEVICEID_8101E)
sc->rl_res_id = PCIR_BAR(2);
sc->rl_res = bus_alloc_resource_any(dev, sc->rl_res_type,
&sc->rl_res_id, RF_ACTIVE);
if (sc->rl_res == NULL) {
sc->rl_res_id = PCIR_BAR(0);
sc->rl_res_type = SYS_RES_IOPORT;
sc->rl_res = bus_alloc_resource_any(dev, sc->rl_res_type,
&sc->rl_res_id, 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);
msic = 0;
if (pci_find_extcap(dev, PCIY_EXPRESS, &reg) == 0) {
sc->rl_flags |= RL_FLAG_PCIE;
msic = pci_msi_count(dev);
if (bootverbose)
device_printf(dev, "MSI count : %d\n", msic);
}
if (msic == RL_MSI_MESSAGES && msi_disable == 0) {
if (pci_alloc_msi(dev, &msic) == 0) {
if (msic == RL_MSI_MESSAGES) {
device_printf(dev, "Using %d MSI messages\n",
msic);
sc->rl_flags |= RL_FLAG_MSI;
/* Explicitly set MSI enable bit. */
CSR_WRITE_1(sc, RL_EECMD, RL_EE_MODE);
cfg = CSR_READ_1(sc, RL_CFG2);
cfg |= RL_CFG2_MSI;
CSR_WRITE_1(sc, RL_CFG2, cfg);
CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF);
} else
pci_release_msi(dev);
}
}
/* Allocate interrupt */
if ((sc->rl_flags & RL_FLAG_MSI) == 0) {
rid = 0;
sc->rl_irq[0] = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->rl_irq[0] == NULL) {
device_printf(dev, "couldn't allocate IRQ resources\n");
error = ENXIO;
goto fail;
}
} else {
for (i = 0, rid = 1; i < RL_MSI_MESSAGES; i++, rid++) {
sc->rl_irq[i] = bus_alloc_resource_any(dev,
SYS_RES_IRQ, &rid, RF_ACTIVE);
if (sc->rl_irq[i] == NULL) {
device_printf(dev,
"couldn't llocate IRQ resources for "
"message %d\n", rid);
error = ENXIO;
goto fail;
}
}
}
if ((sc->rl_flags & RL_FLAG_MSI) == 0) {
CSR_WRITE_1(sc, RL_EECMD, RL_EE_MODE);
cfg = CSR_READ_1(sc, RL_CFG2);
if ((cfg & RL_CFG2_MSI) != 0) {
device_printf(dev, "turning off MSI enable bit.\n");
cfg &= ~RL_CFG2_MSI;
CSR_WRITE_1(sc, RL_CFG2, cfg);
}
CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF);
}
/* Reset the adapter. */
RL_LOCK(sc);
re_reset(sc);
RL_UNLOCK(sc);
hw_rev = re_hwrevs;
hwrev = CSR_READ_4(sc, RL_TXCFG);
switch (hwrev & 0x70000000) {
case 0x00000000:
case 0x10000000:
device_printf(dev, "Chip rev. 0x%08x\n", hwrev & 0xfc800000);
hwrev &= (RL_TXCFG_HWREV | 0x80000000);
break;
default:
device_printf(dev, "Chip rev. 0x%08x\n", hwrev & 0x7c800000);
hwrev &= RL_TXCFG_HWREV;
break;
}
device_printf(dev, "MAC rev. 0x%08x\n", hwrev & 0x00700000);
while (hw_rev->rl_desc != NULL) {
if (hw_rev->rl_rev == hwrev) {
sc->rl_type = hw_rev->rl_type;
sc->rl_hwrev = hw_rev->rl_rev;
break;
}
hw_rev++;
}
if (hw_rev->rl_desc == NULL) {
device_printf(dev, "Unknown H/W revision: 0x%08x\n", hwrev);
error = ENXIO;
goto fail;
}
switch (hw_rev->rl_rev) {
case RL_HWREV_8139CPLUS:
sc->rl_flags |= RL_FLAG_NOJUMBO | RL_FLAG_FASTETHER;
break;
case RL_HWREV_8100E:
case RL_HWREV_8101E:
sc->rl_flags |= RL_FLAG_NOJUMBO | RL_FLAG_PHYWAKE |
RL_FLAG_FASTETHER;
break;
case RL_HWREV_8102E:
case RL_HWREV_8102EL:
sc->rl_flags |= RL_FLAG_NOJUMBO | RL_FLAG_PHYWAKE |
RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT |
RL_FLAG_FASTETHER | RL_FLAG_CMDSTOP;
break;
case RL_HWREV_8168_SPIN1:
case RL_HWREV_8168_SPIN2:
sc->rl_flags |= RL_FLAG_WOLRXENB;
/* FALLTHROUGH */
case RL_HWREV_8168_SPIN3:
sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_MACSTAT;
break;
case RL_HWREV_8168C_SPIN2:
sc->rl_flags |= RL_FLAG_MACSLEEP;
/* FALLTHROUGH */
case RL_HWREV_8168C:
if ((hwrev & 0x00700000) == 0x00200000)
sc->rl_flags |= RL_FLAG_MACSLEEP;
/* FALLTHROUGH */
case RL_HWREV_8168CP:
case RL_HWREV_8168D:
sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_PAR |
RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_CMDSTOP;
/*
* These controllers support jumbo frame but it seems
* that enabling it requires touching additional magic
* registers. Depending on MAC revisions some
* controllers need to disable checksum offload. So
* disable jumbo frame until I have better idea what
* it really requires to make it support.
* RTL8168C/CP : supports up to 6KB jumbo frame.
* RTL8111C/CP : supports up to 9KB jumbo frame.
*/
sc->rl_flags |= RL_FLAG_NOJUMBO;
break;
case RL_HWREV_8169_8110SB:
case RL_HWREV_8169_8110SBL:
case RL_HWREV_8169_8110SC:
case RL_HWREV_8169_8110SCE:
sc->rl_flags |= RL_FLAG_PHYWAKE;
/* FALLTHROUGH */
case RL_HWREV_8169:
case RL_HWREV_8169S:
case RL_HWREV_8110S:
sc->rl_flags |= RL_FLAG_MACRESET;
break;
default:
break;
}
/* Enable PME. */
CSR_WRITE_1(sc, RL_EECMD, RL_EE_MODE);
cfg = CSR_READ_1(sc, RL_CFG1);
cfg |= RL_CFG1_PME;
CSR_WRITE_1(sc, RL_CFG1, cfg);
cfg = CSR_READ_1(sc, RL_CFG5);
cfg &= RL_CFG5_PME_STS;
CSR_WRITE_1(sc, RL_CFG5, cfg);
CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF);
if ((sc->rl_flags & RL_FLAG_PAR) != 0) {
/*
* XXX Should have a better way to extract station
* address from EEPROM.
*/
for (i = 0; i < ETHER_ADDR_LEN; i++)
eaddr[i] = CSR_READ_1(sc, RL_IDR0 + i);
} else {
sc->rl_eewidth = RL_9356_ADDR_LEN;
re_read_eeprom(sc, (caddr_t)&re_did, 0, 1);
if (re_did != 0x8129)
sc->rl_eewidth = RL_9346_ADDR_LEN;
/*
* 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 and number of descriptors. */
sc->rl_rxlenmask = RL_RDESC_STAT_GFRAGLEN;
sc->rl_txstart = RL_GTXSTART;
sc->rl_ldata.rl_tx_desc_cnt = RL_8169_TX_DESC_CNT;
sc->rl_ldata.rl_rx_desc_cnt = RL_8169_RX_DESC_CNT;
} else {
/* Set RX length mask and number of descriptors. */
sc->rl_rxlenmask = RL_RDESC_STAT_FRAGLEN;
sc->rl_txstart = RL_TXSTART;
sc->rl_ldata.rl_tx_desc_cnt = RL_8139_TX_DESC_CNT;
sc->rl_ldata.rl_rx_desc_cnt = RL_8139_RX_DESC_CNT;
}
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;
}
/* Take controller out of deep sleep mode. */
if ((sc->rl_flags & RL_FLAG_MACSLEEP) != 0) {
if ((CSR_READ_1(sc, RL_MACDBG) & 0x80) == 0x80)
CSR_WRITE_1(sc, RL_GPIO,
CSR_READ_1(sc, RL_GPIO) | 0x01);
else
CSR_WRITE_1(sc, RL_GPIO,
CSR_READ_1(sc, RL_GPIO) & ~0x01);
}
/* Take PHY out of power down mode. */
if ((sc->rl_flags & RL_FLAG_PHYWAKE) != 0) {
re_gmii_writereg(dev, 1, 0x1f, 0);
re_gmii_writereg(dev, 1, 0x0e, 0);
}
/* 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_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_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);
/*
* XXX
* Still have no idea how to make TSO work on 8168C, 8168CP,
* 8111C and 8111CP.
*/
if ((sc->rl_flags & RL_FLAG_DESCV2) == 0) {
ifp->if_hwassist |= CSUM_TSO;
ifp->if_capabilities |= IFCAP_TSO4;
}
/*
* 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;
/* Enable WOL if PM is supported. */
if (pci_find_extcap(sc->rl_dev, PCIY_PMG, &reg) == 0)
ifp->if_capabilities |= IFCAP_WOL;
ifp->if_capenable = ifp->if_capabilities;
/*
* Don't enable TSO by default. Under certain
* circumtances the controller generated corrupted
* packets in TSO size.
*/
ifp->if_hwassist &= ~CSUM_TSO;
ifp->if_capenable &= ~IFCAP_TSO4;
#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 */
if ((sc->rl_flags & RL_FLAG_MSI) == 0)
error = bus_setup_intr(dev, sc->rl_irq[0],
INTR_TYPE_NET | INTR_MPSAFE, re_intr, NULL, sc,
&sc->rl_intrhand[0]);
else {
for (i = 0; i < RL_MSI_MESSAGES; i++) {
error = bus_setup_intr(dev, sc->rl_irq[i],
INTR_TYPE_NET | INTR_MPSAFE, re_intr, NULL, sc,
&sc->rl_intrhand[i]);
if (error != 0)
break;
}
}
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(device_t dev)
{
struct rl_softc *sc;
struct ifnet *ifp;
int i, rid;
sc = device_get_softc(dev);
ifp = sc->rl_ifp;
KASSERT(mtx_initialized(&sc->rl_mtx), ("re mutex not initialized"));
/* These should only be active if attach succeeded */
if (device_is_attached(dev)) {
#ifdef DEVICE_POLLING
if (ifp->if_capenable & IFCAP_POLLING)
ether_poll_deregister(ifp);
#endif
RL_LOCK(sc);
#if 0
sc->suspended = 1;
#endif
re_stop(sc);
RL_UNLOCK(sc);
callout_drain(&sc->rl_stat_callout);
taskqueue_drain(taskqueue_fast, &sc->rl_inttask);
taskqueue_drain(taskqueue_fast, &sc->rl_txtask);
/*
* 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.
*/
for (i = 0; i < RL_MSI_MESSAGES; i++) {
if (sc->rl_intrhand[i] != NULL) {
bus_teardown_intr(dev, sc->rl_irq[i],
sc->rl_intrhand[i]);
sc->rl_intrhand[i] = NULL;
}
}
if (ifp != NULL)
if_free(ifp);
if ((sc->rl_flags & RL_FLAG_MSI) == 0) {
if (sc->rl_irq[0] != NULL) {
bus_release_resource(dev, SYS_RES_IRQ, 0,
sc->rl_irq[0]);
sc->rl_irq[0] = NULL;
}
} else {
for (i = 0, rid = 1; i < RL_MSI_MESSAGES; i++, rid++) {
if (sc->rl_irq[i] != NULL) {
bus_release_resource(dev, SYS_RES_IRQ, rid,
sc->rl_irq[i]);
sc->rl_irq[i] = NULL;
}
}
pci_release_msi(dev);
}
if (sc->rl_res)
bus_release_resource(dev, sc->rl_res_type, sc->rl_res_id,
sc->rl_res);
/* Unload and free the RX DMA ring memory and map */
if (sc->rl_ldata.rl_rx_list_tag) {
bus_dmamap_unload(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list_map);
bus_dmamem_free(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list,
sc->rl_ldata.rl_rx_list_map);
bus_dma_tag_destroy(sc->rl_ldata.rl_rx_list_tag);
}
/* Unload and free the TX DMA ring memory and map */
if (sc->rl_ldata.rl_tx_list_tag) {
bus_dmamap_unload(sc->rl_ldata.rl_tx_list_tag,
sc->rl_ldata.rl_tx_list_map);
bus_dmamem_free(sc->rl_ldata.rl_tx_list_tag,
sc->rl_ldata.rl_tx_list,
sc->rl_ldata.rl_tx_list_map);
bus_dma_tag_destroy(sc->rl_ldata.rl_tx_list_tag);
}
/* Destroy all the RX and TX buffer maps */
if (sc->rl_ldata.rl_tx_mtag) {
for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++)
bus_dmamap_destroy(sc->rl_ldata.rl_tx_mtag,
sc->rl_ldata.rl_tx_desc[i].tx_dmamap);
bus_dma_tag_destroy(sc->rl_ldata.rl_tx_mtag);
}
if (sc->rl_ldata.rl_rx_mtag) {
for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++)
bus_dmamap_destroy(sc->rl_ldata.rl_rx_mtag,
sc->rl_ldata.rl_rx_desc[i].rx_dmamap);
if (sc->rl_ldata.rl_rx_sparemap)
bus_dmamap_destroy(sc->rl_ldata.rl_rx_mtag,
sc->rl_ldata.rl_rx_sparemap);
bus_dma_tag_destroy(sc->rl_ldata.rl_rx_mtag);
}
/* 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 __inline void
re_discard_rxbuf(struct rl_softc *sc, int idx)
{
struct rl_desc *desc;
struct rl_rxdesc *rxd;
uint32_t cmdstat;
rxd = &sc->rl_ldata.rl_rx_desc[idx];
desc = &sc->rl_ldata.rl_rx_list[idx];
desc->rl_vlanctl = 0;
cmdstat = rxd->rx_size;
if (idx == sc->rl_ldata.rl_rx_desc_cnt - 1)
cmdstat |= RL_RDESC_CMD_EOR;
desc->rl_cmdstat = htole32(cmdstat | RL_RDESC_CMD_OWN);
}
static int
re_newbuf(struct rl_softc *sc, int idx)
{
struct mbuf *m;
struct rl_rxdesc *rxd;
bus_dma_segment_t segs[1];
bus_dmamap_t map;
struct rl_desc *desc;
uint32_t cmdstat;
int error, nsegs;
m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR);
if (m == NULL)
return (ENOBUFS);
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
error = bus_dmamap_load_mbuf_sg(sc->rl_ldata.rl_rx_mtag,
sc->rl_ldata.rl_rx_sparemap, m, segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
m_freem(m);
return (ENOBUFS);
}
KASSERT(nsegs == 1, ("%s: %d segment returned!", __func__, nsegs));
rxd = &sc->rl_ldata.rl_rx_desc[idx];
if (rxd->rx_m != NULL) {
bus_dmamap_sync(sc->rl_ldata.rl_rx_mtag, rxd->rx_dmamap,
BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->rl_ldata.rl_rx_mtag, rxd->rx_dmamap);
}
rxd->rx_m = m;
map = rxd->rx_dmamap;
rxd->rx_dmamap = sc->rl_ldata.rl_rx_sparemap;
rxd->rx_size = segs[0].ds_len;
sc->rl_ldata.rl_rx_sparemap = map;
bus_dmamap_sync(sc->rl_ldata.rl_rx_mtag, rxd->rx_dmamap,
BUS_DMASYNC_PREREAD);
desc = &sc->rl_ldata.rl_rx_list[idx];
desc->rl_vlanctl = 0;
desc->rl_bufaddr_lo = htole32(RL_ADDR_LO(segs[0].ds_addr));
desc->rl_bufaddr_hi = htole32(RL_ADDR_HI(segs[0].ds_addr));
cmdstat = segs[0].ds_len;
if (idx == sc->rl_ldata.rl_rx_desc_cnt - 1)
cmdstat |= RL_RDESC_CMD_EOR;
desc->rl_cmdstat = htole32(cmdstat | RL_RDESC_CMD_OWN);
return (0);
}
#ifdef RE_FIXUP_RX
static __inline void
re_fixup_rx(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;
}
#endif
static int
re_tx_list_init(struct rl_softc *sc)
{
struct rl_desc *desc;
int i;
RL_LOCK_ASSERT(sc);
bzero(sc->rl_ldata.rl_tx_list,
sc->rl_ldata.rl_tx_desc_cnt * sizeof(struct rl_desc));
for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++)
sc->rl_ldata.rl_tx_desc[i].tx_m = NULL;
/* Set EOR. */
desc = &sc->rl_ldata.rl_tx_list[sc->rl_ldata.rl_tx_desc_cnt - 1];
desc->rl_cmdstat |= htole32(RL_TDESC_CMD_EOR);
bus_dmamap_sync(sc->rl_ldata.rl_tx_list_tag,
sc->rl_ldata.rl_tx_list_map,
BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
sc->rl_ldata.rl_tx_prodidx = 0;
sc->rl_ldata.rl_tx_considx = 0;
sc->rl_ldata.rl_tx_free = sc->rl_ldata.rl_tx_desc_cnt;
return (0);
}
static int
re_rx_list_init(struct rl_softc *sc)
{
int error, i;
bzero(sc->rl_ldata.rl_rx_list,
sc->rl_ldata.rl_rx_desc_cnt * sizeof(struct rl_desc));
for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++) {
sc->rl_ldata.rl_rx_desc[i].rx_m = NULL;
if ((error = re_newbuf(sc, i)) != 0)
return (error);
}
/* 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(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;
/* Invalidate the descriptor memory */
bus_dmamap_sync(sc->rl_ldata.rl_rx_list_tag,
sc->rl_ldata.rl_rx_list_map,
BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
for (i = sc->rl_ldata.rl_rx_prodidx; maxpkt > 0;
i = RL_RX_DESC_NXT(sc, i)) {
cur_rx = &sc->rl_ldata.rl_rx_list[i];
rxstat = le32toh(cur_rx->rl_cmdstat);
if ((rxstat & RL_RDESC_STAT_OWN) != 0)
break;
total_len = rxstat & sc->rl_rxlenmask;
rxvlan = le32toh(cur_rx->rl_vlanctl);
m = sc->rl_ldata.rl_rx_desc[i].rx_m;
if (!(rxstat & RL_RDESC_STAT_EOF)) {
if (re_newbuf(sc, i) != 0) {
/*
* If this is part of a multi-fragment packet,
* discard all the pieces.
*/
if (sc->rl_head != NULL) {
m_freem(sc->rl_head);
sc->rl_head = sc->rl_tail = NULL;
}
re_discard_rxbuf(sc, i);
continue;
}
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;
}
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_discard_rxbuf(sc, i);
continue;
}
/*
* If allocating a replacement mbuf fails,
* reload the current one.
*/
if (re_newbuf(sc, i) != 0) {
ifp->if_iqdrops++;
if (sc->rl_head != NULL) {
m_freem(sc->rl_head);
sc->rl_head = sc->rl_tail = NULL;
}
re_discard_rxbuf(sc, i);
continue;
}
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) {
if ((sc->rl_flags & RL_FLAG_DESCV2) == 0) {
/* 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;
}
} else {
/*
* RTL8168C/RTL816CP/RTL8111C/RTL8111CP
*/
if ((rxstat & RL_RDESC_STAT_PROTOID) &&
(rxvlan & RL_RDESC_IPV4))
m->m_pkthdr.csum_flags |=
CSUM_IP_CHECKED;
if (!(rxstat & RL_RDESC_STAT_IPSUMBAD) &&
(rxvlan & RL_RDESC_IPV4))
m->m_pkthdr.csum_flags |=
CSUM_IP_VALID;
if (((rxstat & RL_RDESC_STAT_TCP) &&
!(rxstat & RL_RDESC_STAT_TCPSUMBAD)) ||
((rxstat & RL_RDESC_STAT_UDP) &&
!(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 =
bswap16((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(struct rl_softc *sc)
{
struct ifnet *ifp;
struct rl_txdesc *txd;
u_int32_t txstat;
int cons;
cons = sc->rl_ldata.rl_tx_considx;
if (cons == sc->rl_ldata.rl_tx_prodidx)
return;
ifp = sc->rl_ifp;
/* 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 | BUS_DMASYNC_POSTWRITE);
for (; cons != sc->rl_ldata.rl_tx_prodidx;
cons = RL_TX_DESC_NXT(sc, cons)) {
txstat = le32toh(sc->rl_ldata.rl_tx_list[cons].rl_cmdstat);
if (txstat & RL_TDESC_STAT_OWN)
break;
/*
* We only stash mbufs in the last descriptor
* in a fragment chain, which also happens to
* be the only place where the TX status bits
* are valid.
*/
if (txstat & RL_TDESC_CMD_EOF) {
txd = &sc->rl_ldata.rl_tx_desc[cons];
bus_dmamap_sync(sc->rl_ldata.rl_tx_mtag,
txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->rl_ldata.rl_tx_mtag,
txd->tx_dmamap);
KASSERT(txd->tx_m != NULL,
("%s: freeing NULL mbufs!", __func__));
m_freem(txd->tx_m);
txd->tx_m = NULL;
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++;
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
}
sc->rl_ldata.rl_tx_considx = cons;
/* No changes made to the TX ring, so no flush needed */
if (sc->rl_ldata.rl_tx_free != sc->rl_ldata.rl_tx_desc_cnt) {
#ifdef RE_TX_MODERATION
/*
* If not all descriptors have been reaped yet, reload
* the timer so that we will eventually get another
* interrupt that will cause us to re-enter this routine.
* This is done in case the transmitter has gone idle.
*/
CSR_WRITE_4(sc, RL_TIMERCNT, 1);
#endif
} else
sc->rl_watchdog_timer = 0;
}
static void
re_tick(void *xsc)
{
struct rl_softc *sc;
struct mii_data *mii;
sc = xsc;
RL_LOCK_ASSERT(sc);
mii = device_get_softc(sc->rl_miibus);
mii_tick(mii);
if ((sc->rl_flags & RL_FLAG_LINK) == 0)
re_miibus_statchg(sc->rl_dev);
/*
* Reclaim transmitted frames here. Technically it is not
* necessary to do here but it ensures periodic reclamation
* regardless of Tx completion interrupt which seems to be
* lost on PCIe based controllers under certain situations.
*/
re_txeof(sc);
re_watchdog(sc);
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);
if ((status & (RL_ISR_TX_OK | RL_ISR_TX_DESC_UNAVAIL)) &&
(sc->rl_flags & RL_FLAG_PCIE))
CSR_WRITE_1(sc, sc->rl_txstart, RL_TXSTART_START);
/*
* XXX check behaviour on receiver stalls.
*/
if (status & RL_ISR_SYSTEM_ERR)
re_init_locked(sc);
}
}
#endif /* DEVICE_POLLING */
static int
re_intr(void *arg)
{
struct rl_softc *sc;
uint16_t status;
sc = arg;
status = CSR_READ_2(sc, RL_ISR);
if (status == 0xFFFF || (status & RL_INTRS_CPLUS) == 0)
return (FILTER_STRAY);
CSR_WRITE_2(sc, RL_IMR, 0);
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_inttask);
return (FILTER_HANDLED);
}
static void
re_int_task(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_drv_flags & IFF_DRV_RUNNING) == 0) {
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);
/*
* 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 ((status & (RL_ISR_TX_OK | RL_ISR_TX_DESC_UNAVAIL)) &&
(sc->rl_flags & RL_FLAG_PCIE))
CSR_WRITE_1(sc, sc->rl_txstart, RL_TXSTART_START);
if (status & (
#ifdef RE_TX_MODERATION
RL_ISR_TIMEOUT_EXPIRED|
#else
RL_ISR_TX_OK|
#endif
RL_ISR_TX_ERR|RL_ISR_TX_DESC_UNAVAIL))
re_txeof(sc);
if (status & RL_ISR_SYSTEM_ERR)
re_init_locked(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);
}
static int
re_encap(struct rl_softc *sc, struct mbuf **m_head)
{
struct rl_txdesc *txd, *txd_last;
bus_dma_segment_t segs[RL_NTXSEGS];
bus_dmamap_t map;
struct mbuf *m_new;
struct rl_desc *desc;
int nsegs, prod;
int i, error, ei, si;
int padlen;
uint32_t cmdstat, csum_flags, vlanctl;
RL_LOCK_ASSERT(sc);
M_ASSERTPKTHDR((*m_head));
/*
* 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 IP checksum
* offload is enabled, we always manually pad short frames out
* to the minimum ethernet frame size.
*/
if ((sc->rl_flags & RL_FLAG_DESCV2) == 0 &&
(*m_head)->m_pkthdr.len < RL_IP4CSUMTX_PADLEN &&
((*m_head)->m_pkthdr.csum_flags & CSUM_IP) != 0) {
padlen = RL_MIN_FRAMELEN - (*m_head)->m_pkthdr.len;
if (M_WRITABLE(*m_head) == 0) {
/* Get a writable copy. */
m_new = m_dup(*m_head, M_DONTWAIT);
m_freem(*m_head);
if (m_new == NULL) {
*m_head = NULL;
return (ENOBUFS);
}
*m_head = m_new;
}
if ((*m_head)->m_next != NULL ||
M_TRAILINGSPACE(*m_head) < padlen) {
m_new = m_defrag(*m_head, M_DONTWAIT);
if (m_new == NULL) {
m_freem(*m_head);
*m_head = NULL;
return (ENOBUFS);
}
} else
m_new = *m_head;
/*
* Manually pad short frames, and zero the pad space
* to avoid leaking data.
*/
bzero(mtod(m_new, char *) + m_new->m_pkthdr.len, padlen);
m_new->m_pkthdr.len += padlen;
m_new->m_len = m_new->m_pkthdr.len;
*m_head = m_new;
}
prod = sc->rl_ldata.rl_tx_prodidx;
txd = &sc->rl_ldata.rl_tx_desc[prod];
error = bus_dmamap_load_mbuf_sg(sc->rl_ldata.rl_tx_mtag, txd->tx_dmamap,
*m_head, segs, &nsegs, BUS_DMA_NOWAIT);
if (error == EFBIG) {
m_new = m_collapse(*m_head, M_DONTWAIT, RL_NTXSEGS);
if (m_new == NULL) {
m_freem(*m_head);
*m_head = NULL;
return (ENOBUFS);
}
*m_head = m_new;
error = bus_dmamap_load_mbuf_sg(sc->rl_ldata.rl_tx_mtag,
txd->tx_dmamap, *m_head, segs, &nsegs, BUS_DMA_NOWAIT);
if (error != 0) {
m_freem(*m_head);
*m_head = NULL;
return (error);
}
} else if (error != 0)
return (error);
if (nsegs == 0) {
m_freem(*m_head);
*m_head = NULL;
return (EIO);
}
/* Check for number of available descriptors. */
if (sc->rl_ldata.rl_tx_free - nsegs <= 1) {
bus_dmamap_unload(sc->rl_ldata.rl_tx_mtag, txd->tx_dmamap);
return (ENOBUFS);
}
bus_dmamap_sync(sc->rl_ldata.rl_tx_mtag, txd->tx_dmamap,
BUS_DMASYNC_PREWRITE);
/*
* 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.
*/
vlanctl = 0;
csum_flags = 0;
if (((*m_head)->m_pkthdr.csum_flags & CSUM_TSO) != 0)
csum_flags = RL_TDESC_CMD_LGSEND |
((uint32_t)(*m_head)->m_pkthdr.tso_segsz <<
RL_TDESC_CMD_MSSVAL_SHIFT);
else {
/*
* Unconditionally enable IP checksum if TCP or UDP
* checksum is required. Otherwise, TCP/UDP checksum
* does't make effects.
*/
if (((*m_head)->m_pkthdr.csum_flags & RE_CSUM_FEATURES) != 0) {
if ((sc->rl_flags & RL_FLAG_DESCV2) == 0) {
csum_flags |= RL_TDESC_CMD_IPCSUM;
if (((*m_head)->m_pkthdr.csum_flags &
CSUM_TCP) != 0)
csum_flags |= RL_TDESC_CMD_TCPCSUM;
if (((*m_head)->m_pkthdr.csum_flags &
CSUM_UDP) != 0)
csum_flags |= RL_TDESC_CMD_UDPCSUM;
} else {
vlanctl |= RL_TDESC_CMD_IPCSUMV2;
if (((*m_head)->m_pkthdr.csum_flags &
CSUM_TCP) != 0)
vlanctl |= RL_TDESC_CMD_TCPCSUMV2;
if (((*m_head)->m_pkthdr.csum_flags &
CSUM_UDP) != 0)
vlanctl |= RL_TDESC_CMD_UDPCSUMV2;
}
}
}
/*
* Set up hardware VLAN tagging. Note: vlan tag info must
* appear in all descriptors of a multi-descriptor
* transmission attempt.
*/
if ((*m_head)->m_flags & M_VLANTAG)
vlanctl |= bswap16((*m_head)->m_pkthdr.ether_vtag) |
RL_TDESC_VLANCTL_TAG;
si = prod;
for (i = 0; i < nsegs; i++, prod = RL_TX_DESC_NXT(sc, prod)) {
desc = &sc->rl_ldata.rl_tx_list[prod];
desc->rl_vlanctl = htole32(vlanctl);
desc->rl_bufaddr_lo = htole32(RL_ADDR_LO(segs[i].ds_addr));
desc->rl_bufaddr_hi = htole32(RL_ADDR_HI(segs[i].ds_addr));
cmdstat = segs[i].ds_len;
if (i != 0)
cmdstat |= RL_TDESC_CMD_OWN;
if (prod == sc->rl_ldata.rl_tx_desc_cnt - 1)
cmdstat |= RL_TDESC_CMD_EOR;
desc->rl_cmdstat = htole32(cmdstat | csum_flags);
sc->rl_ldata.rl_tx_free--;
}
/* Update producer index. */
sc->rl_ldata.rl_tx_prodidx = prod;
/* Set EOF on the last descriptor. */
ei = RL_TX_DESC_PRV(sc, prod);
desc = &sc->rl_ldata.rl_tx_list[ei];
desc->rl_cmdstat |= htole32(RL_TDESC_CMD_EOF);
desc = &sc->rl_ldata.rl_tx_list[si];
/* Set SOF and transfer ownership of packet to the chip. */
desc->rl_cmdstat |= htole32(RL_TDESC_CMD_OWN | RL_TDESC_CMD_SOF);
/*
* Insure that the map for this transmission
* is placed at the array index of the last descriptor
* in this chain. (Swap last and first dmamaps.)
*/
txd_last = &sc->rl_ldata.rl_tx_desc[ei];
map = txd->tx_dmamap;
txd->tx_dmamap = txd_last->tx_dmamap;
txd_last->tx_dmamap = map;
txd_last->tx_m = *m_head;
return (0);
}
static void
re_tx_task(void *arg, int npending)
{
struct ifnet *ifp;
ifp = arg;
re_start(ifp);
}
/*
* Main transmit routine for C+ and gigE NICs.
*/
static void
re_start(struct ifnet *ifp)
{
struct rl_softc *sc;
struct mbuf *m_head;
int queued;
sc = ifp->if_softc;
RL_LOCK(sc);
if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) !=
IFF_DRV_RUNNING || (sc->rl_flags & RL_FLAG_LINK) == 0) {
RL_UNLOCK(sc);
return;
}
for (queued = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) &&
sc->rl_ldata.rl_tx_free > 1;) {
IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head);
if (m_head == NULL)
break;
if (re_encap(sc, &m_head) != 0) {
if (m_head == NULL)
break;
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.
*/
ETHER_BPF_MTAP(ifp, m_head);
queued++;
}
if (queued == 0) {
#ifdef RE_TX_MODERATION
if (sc->rl_ldata.rl_tx_free != sc->rl_ldata.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);
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.
*/
sc->rl_watchdog_timer = 5;
RL_UNLOCK(sc);
}
static void
re_init(void *xsc)
{
struct rl_softc *sc = xsc;
RL_LOCK(sc);
re_init_locked(sc);
RL_UNLOCK(sc);
}
static void
re_init_locked(struct rl_softc *sc)
{
struct ifnet *ifp = sc->rl_ifp;
struct mii_data *mii;
uint32_t reg;
uint16_t cfg;
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);
/* Put controller into known state. */
re_reset(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.
*/
cfg = RL_CPLUSCMD_PCI_MRW;
if ((ifp->if_capenable & IFCAP_RXCSUM) != 0)
cfg |= RL_CPLUSCMD_RXCSUM_ENB;
if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
cfg |= RL_CPLUSCMD_VLANSTRIP;
if ((sc->rl_flags & RL_FLAG_MACSTAT) != 0) {
cfg |= RL_CPLUSCMD_MACSTAT_DIS;
/* XXX magic. */
cfg |= 0x0001;
} else
cfg |= RL_CPLUSCMD_RXENB | RL_CPLUSCMD_TXENB;
CSR_WRITE_2(sc, RL_CPLUS_CMD, cfg);
if (sc->rl_hwrev == RL_HWREV_8169_8110SC ||
sc->rl_hwrev == RL_HWREV_8169_8110SCE) {
reg = 0x000fff00;
if ((CSR_READ_1(sc, RL_CFG2) & RL_CFG2_PCI66MHZ) != 0)
reg |= 0x000000ff;
if (sc->rl_hwrev == RL_HWREV_8169_8110SCE)
reg |= 0x00f00000;
CSR_WRITE_4(sc, 0x7c, reg);
/* Disable interrupt mitigation. */
CSR_WRITE_2(sc, 0xe2, 0);
}
/*
* Disable TSO if interface MTU size is greater than MSS
* allowed in controller.
*/
if (ifp->if_mtu > RL_TSO_MTU && (ifp->if_capenable & IFCAP_TSO4) != 0) {
ifp->if_capenable &= ~IFCAP_TSO4;
ifp->if_hwassist &= ~CSUM_TSO;
}
/*
* 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);
/*
* 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));
/*
* Enable transmit and receive.
*/
CSR_WRITE_1(sc, RL_COMMAND, RL_CMD_TX_ENB|RL_CMD_RX_ENB);
/*
* Set the initial TX 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_1(sc, RL_EARLY_TX_THRESH, 16);
/*
* Set the initial RX configuration.
*/
re_set_rxmode(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
#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_flags &= ~RL_FLAG_LINK;
sc->rl_watchdog_timer = 0;
callout_reset(&sc->rl_stat_callout, hz, re_tick, sc);
}
/*
* Set media options.
*/
static int
re_ifmedia_upd(struct ifnet *ifp)
{
struct rl_softc *sc;
struct mii_data *mii;
int error;
sc = ifp->if_softc;
mii = device_get_softc(sc->rl_miibus);
RL_LOCK(sc);
error = mii_mediachg(mii);
RL_UNLOCK(sc);
return (error);
}
/*
* Report current media status.
*/
static void
re_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
{
struct rl_softc *sc;
struct mii_data *mii;
sc = ifp->if_softc;
mii = device_get_softc(sc->rl_miibus);
RL_LOCK(sc);
mii_pollstat(mii);
RL_UNLOCK(sc);
ifmr->ifm_active = mii->mii_media_active;
ifmr->ifm_status = mii->mii_media_status;
}
static int
re_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
{
struct rl_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *) data;
struct mii_data *mii;
int error = 0;
switch (command) {
case SIOCSIFMTU:
if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > RL_JUMBO_MTU) {
error = EINVAL;
break;
}
if ((sc->rl_flags & RL_FLAG_NOJUMBO) != 0 &&
ifr->ifr_mtu > RL_MAX_FRAMELEN) {
error = EINVAL;
break;
}
RL_LOCK(sc);
if (ifp->if_mtu != ifr->ifr_mtu)
ifp->if_mtu = ifr->ifr_mtu;
if (ifp->if_mtu > RL_TSO_MTU &&
(ifp->if_capenable & IFCAP_TSO4) != 0) {
ifp->if_capenable &= ~IFCAP_TSO4;
ifp->if_hwassist &= ~CSUM_TSO;
}
RL_UNLOCK(sc);
break;
case SIOCSIFFLAGS:
RL_LOCK(sc);
if ((ifp->if_flags & IFF_UP) != 0) {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) {
if (((ifp->if_flags ^ sc->rl_if_flags)
& (IFF_PROMISC | IFF_ALLMULTI)) != 0)
re_set_rxmode(sc);
} else
re_init_locked(sc);
} else {
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
re_stop(sc);
}
sc->rl_if_flags = ifp->if_flags;
RL_UNLOCK(sc);
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
RL_LOCK(sc);
re_set_rxmode(sc);
RL_UNLOCK(sc);
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
mii = device_get_softc(sc->rl_miibus);
error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command);
break;
case SIOCSIFCAP:
{
int mask, reinit;
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
reinit = 0;
#ifdef DEVICE_POLLING
if (mask & IFCAP_POLLING) {
if (ifr->ifr_reqcap & IFCAP_POLLING) {
error = ether_poll_register(re_poll, ifp);
if (error)
return(error);
RL_LOCK(sc);
/* Disable interrupts */
CSR_WRITE_2(sc, RL_IMR, 0x0000);
ifp->if_capenable |= IFCAP_POLLING;
RL_UNLOCK(sc);
} else {
error = ether_poll_deregister(ifp);
/* Enable interrupts. */
RL_LOCK(sc);
CSR_WRITE_2(sc, RL_IMR, RL_INTRS_CPLUS);
ifp->if_capenable &= ~IFCAP_POLLING;
RL_UNLOCK(sc);
}
}
#endif /* DEVICE_POLLING */
if (mask & IFCAP_HWCSUM) {
ifp->if_capenable ^= IFCAP_HWCSUM;
if (ifp->if_capenable & IFCAP_TXCSUM)
ifp->if_hwassist |= RE_CSUM_FEATURES;
else
ifp->if_hwassist &= ~RE_CSUM_FEATURES;
reinit = 1;
}
if (mask & IFCAP_VLAN_HWTAGGING) {
ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
reinit = 1;
}
if (mask & IFCAP_TSO4) {
ifp->if_capenable ^= IFCAP_TSO4;
if ((IFCAP_TSO4 & ifp->if_capenable) &&
(IFCAP_TSO4 & ifp->if_capabilities))
ifp->if_hwassist |= CSUM_TSO;
else
ifp->if_hwassist &= ~CSUM_TSO;
if (ifp->if_mtu > RL_TSO_MTU &&
(ifp->if_capenable & IFCAP_TSO4) != 0) {
ifp->if_capenable &= ~IFCAP_TSO4;
ifp->if_hwassist &= ~CSUM_TSO;
}
}
if ((mask & IFCAP_WOL) != 0 &&
(ifp->if_capabilities & IFCAP_WOL) != 0) {
if ((mask & IFCAP_WOL_UCAST) != 0)
ifp->if_capenable ^= IFCAP_WOL_UCAST;
if ((mask & IFCAP_WOL_MCAST) != 0)
ifp->if_capenable ^= IFCAP_WOL_MCAST;
if ((mask & IFCAP_WOL_MAGIC) != 0)
ifp->if_capenable ^= IFCAP_WOL_MAGIC;
}
if (reinit && ifp->if_drv_flags & IFF_DRV_RUNNING)
re_init(sc);
VLAN_CAPABILITIES(ifp);
}
break;
default:
error = ether_ioctl(ifp, command, data);
break;
}
return (error);
}
static void
re_watchdog(struct rl_softc *sc)
{
struct ifnet *ifp;
RL_LOCK_ASSERT(sc);
if (sc->rl_watchdog_timer == 0 || --sc->rl_watchdog_timer != 0)
return;
ifp = sc->rl_ifp;
re_txeof(sc);
if (sc->rl_ldata.rl_tx_free == sc->rl_ldata.rl_tx_desc_cnt) {
if_printf(ifp, "watchdog timeout (missed Tx interrupts) "
"-- recovering\n");
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_txtask);
return;
}
if_printf(ifp, "watchdog timeout\n");
ifp->if_oerrors++;
re_rxeof(sc);
re_init_locked(sc);
if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd))
taskqueue_enqueue_fast(taskqueue_fast, &sc->rl_txtask);
}
/*
* Stop the adapter and free any mbufs allocated to the
* RX and TX lists.
*/
static void
re_stop(struct rl_softc *sc)
{
int i;
struct ifnet *ifp;
struct rl_txdesc *txd;
struct rl_rxdesc *rxd;
RL_LOCK_ASSERT(sc);
ifp = sc->rl_ifp;
sc->rl_watchdog_timer = 0;
callout_stop(&sc->rl_stat_callout);
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
if ((sc->rl_flags & RL_FLAG_CMDSTOP) != 0)
CSR_WRITE_1(sc, RL_COMMAND, RL_CMD_STOPREQ | RL_CMD_TX_ENB |
RL_CMD_RX_ENB);
else
CSR_WRITE_1(sc, RL_COMMAND, 0x00);
DELAY(1000);
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 < sc->rl_ldata.rl_tx_desc_cnt; i++) {
txd = &sc->rl_ldata.rl_tx_desc[i];
if (txd->tx_m != NULL) {
bus_dmamap_sync(sc->rl_ldata.rl_tx_mtag,
txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(sc->rl_ldata.rl_tx_mtag,
txd->tx_dmamap);
m_freem(txd->tx_m);
txd->tx_m = NULL;
}
}
/* Free the RX list buffers. */
for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++) {
rxd = &sc->rl_ldata.rl_rx_desc[i];
if (rxd->rx_m != NULL) {
bus_dmamap_sync(sc->rl_ldata.rl_tx_mtag,
rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
bus_dmamap_unload(sc->rl_ldata.rl_rx_mtag,
rxd->rx_dmamap);
m_freem(rxd->rx_m);
rxd->rx_m = NULL;
}
}
}
/*
* 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(device_t dev)
{
struct rl_softc *sc;
sc = device_get_softc(dev);
RL_LOCK(sc);
re_stop(sc);
re_setwol(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(device_t dev)
{
struct rl_softc *sc;
struct ifnet *ifp;
sc = device_get_softc(dev);
RL_LOCK(sc);
ifp = sc->rl_ifp;
/* Take controller out of sleep mode. */
if ((sc->rl_flags & RL_FLAG_MACSLEEP) != 0) {
if ((CSR_READ_1(sc, RL_MACDBG) & 0x80) == 0x80)
CSR_WRITE_1(sc, RL_GPIO,
CSR_READ_1(sc, RL_GPIO) | 0x01);
}
/* reinitialize interface if necessary */
if (ifp->if_flags & IFF_UP)
re_init_locked(sc);
/*
* Clear WOL matching such that normal Rx filtering
* wouldn't interfere with WOL patterns.
*/
re_clrwol(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 int
re_shutdown(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;
re_setwol(sc);
RL_UNLOCK(sc);
return (0);
}
static void
re_setwol(struct rl_softc *sc)
{
struct ifnet *ifp;
int pmc;
uint16_t pmstat;
uint8_t v;
RL_LOCK_ASSERT(sc);
if (pci_find_extcap(sc->rl_dev, PCIY_PMG, &pmc) != 0)
return;
ifp = sc->rl_ifp;
/* Put controller into sleep mode. */
if ((sc->rl_flags & RL_FLAG_MACSLEEP) != 0) {
if ((CSR_READ_1(sc, RL_MACDBG) & 0x80) == 0x80)
CSR_WRITE_1(sc, RL_GPIO,
CSR_READ_1(sc, RL_GPIO) & ~0x01);
}
if ((ifp->if_capenable & IFCAP_WOL) != 0 &&
(sc->rl_flags & RL_FLAG_WOLRXENB) != 0)
CSR_WRITE_1(sc, RL_COMMAND, RL_CMD_RX_ENB);
/* Enable config register write. */
CSR_WRITE_1(sc, RL_EECMD, RL_EE_MODE);
/* Enable PME. */
v = CSR_READ_1(sc, RL_CFG1);
v &= ~RL_CFG1_PME;
if ((ifp->if_capenable & IFCAP_WOL) != 0)
v |= RL_CFG1_PME;
CSR_WRITE_1(sc, RL_CFG1, v);
v = CSR_READ_1(sc, RL_CFG3);
v &= ~(RL_CFG3_WOL_LINK | RL_CFG3_WOL_MAGIC);
if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
v |= RL_CFG3_WOL_MAGIC;
CSR_WRITE_1(sc, RL_CFG3, v);
/* Config register write done. */
CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF);
v = CSR_READ_1(sc, RL_CFG5);
v &= ~(RL_CFG5_WOL_BCAST | RL_CFG5_WOL_MCAST | RL_CFG5_WOL_UCAST);
v &= ~RL_CFG5_WOL_LANWAKE;
if ((ifp->if_capenable & IFCAP_WOL_UCAST) != 0)
v |= RL_CFG5_WOL_UCAST;
if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
v |= RL_CFG5_WOL_MCAST | RL_CFG5_WOL_BCAST;
if ((ifp->if_capenable & IFCAP_WOL) != 0)
v |= RL_CFG5_WOL_LANWAKE;
CSR_WRITE_1(sc, RL_CFG5, v);
/*
* It seems that hardware resets its link speed to 100Mbps in
* power down mode so switching to 100Mbps in driver is not
* needed.
*/
/* Request PME if WOL is requested. */
pmstat = pci_read_config(sc->rl_dev, pmc + PCIR_POWER_STATUS, 2);
pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
if ((ifp->if_capenable & IFCAP_WOL) != 0)
pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
pci_write_config(sc->rl_dev, pmc + PCIR_POWER_STATUS, pmstat, 2);
}
static void
re_clrwol(struct rl_softc *sc)
{
int pmc;
uint8_t v;
RL_LOCK_ASSERT(sc);
if (pci_find_extcap(sc->rl_dev, PCIY_PMG, &pmc) != 0)
return;
/* Enable config register write. */
CSR_WRITE_1(sc, RL_EECMD, RL_EE_MODE);
v = CSR_READ_1(sc, RL_CFG3);
v &= ~(RL_CFG3_WOL_LINK | RL_CFG3_WOL_MAGIC);
CSR_WRITE_1(sc, RL_CFG3, v);
/* Config register write done. */
CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF);
v = CSR_READ_1(sc, RL_CFG5);
v &= ~(RL_CFG5_WOL_BCAST | RL_CFG5_WOL_MCAST | RL_CFG5_WOL_UCAST);
v &= ~RL_CFG5_WOL_LANWAKE;
CSR_WRITE_1(sc, RL_CFG5, v);
}
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