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19bff684a4
freebsd/sys/pci/if_ax.c
Bill Paul 98a229f65e As suggested by phk, unconditionalize BPF support in these drivers. Since 
there are stubs compiled into the kernel if BPF support is not enabled,
there aren't any problems with unresolved symbols. The modules in /modules
are compiled with BPF support enabled anyway, so the most this will do is
bloat GENERIC a little.
1999-09-23 03:32:57 +00:00

2234 lines
51 KiB
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/*
* Copyright (c) 1997, 1998, 1999
* Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* ASIX AX88140A and AX88141 fast ethernet PCI NIC driver.
*
* Written by Bill Paul <wpaul@ctr.columbia.edu>
* Electrical Engineering Department
* Columbia University, New York City
*/
/*
* The ASIX Electronics AX88140A is still another DEC 21x4x clone. It's
* a reasonably close copy of the tulip, except for the receiver filter
* programming. Where the DEC chip has a special setup frame that
* needs to be downloaded into the transmit DMA engine, the ASIX chip
* has a less complicated setup frame which is written into one of
* the registers.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sockio.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/socket.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/bpf.h>
#include <vm/vm.h> /* for vtophys */
#include <vm/pmap.h> /* for vtophys */
#include <machine/clock.h> /* for DELAY */
#include <machine/bus_pio.h>
#include <machine/bus_memio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#define AX_USEIOSPACE
/* #define AX_BACKGROUND_AUTONEG */
#include <pci/if_axreg.h>
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif
/*
* Various supported device vendors/types and their names.
*/
static struct ax_type ax_devs[] = {
{ AX_VENDORID, AX_DEVICEID_AX88140A,
"ASIX AX88140A 10/100BaseTX" },
{ AX_VENDORID, AX_DEVICEID_AX88140A,
"ASIX AX88141 10/100BaseTX" },
{ 0, 0, NULL }
};
/*
* Various supported PHY vendors/types and their names. Note that
* this driver will work with pretty much any MII-compliant PHY,
* so failure to positively identify the chip is not a fatal error.
*/
static struct ax_type ax_phys[] = {
{ TI_PHY_VENDORID, TI_PHY_10BT, "<TI ThunderLAN 10BT (internal)>" },
{ TI_PHY_VENDORID, TI_PHY_100VGPMI, "<TI TNETE211 100VG Any-LAN>" },
{ NS_PHY_VENDORID, NS_PHY_83840A, "<National Semiconductor DP83840A>"},
{ LEVEL1_PHY_VENDORID, LEVEL1_PHY_LXT970, "<Level 1 LXT970>" },
{ INTEL_PHY_VENDORID, INTEL_PHY_82555, "<Intel 82555>" },
{ SEEQ_PHY_VENDORID, SEEQ_PHY_80220, "<SEEQ 80220>" },
{ 0, 0, "<MII-compliant physical interface>" }
};
static int ax_probe __P((device_t));
static int ax_attach __P((device_t));
static int ax_detach __P((device_t));
static int ax_newbuf __P((struct ax_softc *,
struct ax_chain_onefrag *,
struct mbuf *));
static int ax_encap __P((struct ax_softc *, struct ax_chain *,
struct mbuf *));
static void ax_rxeof __P((struct ax_softc *));
static void ax_rxeoc __P((struct ax_softc *));
static void ax_txeof __P((struct ax_softc *));
static void ax_txeoc __P((struct ax_softc *));
static void ax_intr __P((void *));
static void ax_start __P((struct ifnet *));
static int ax_ioctl __P((struct ifnet *, u_long, caddr_t));
static void ax_init __P((void *));
static void ax_stop __P((struct ax_softc *));
static void ax_watchdog __P((struct ifnet *));
static void ax_shutdown __P((device_t));
static int ax_ifmedia_upd __P((struct ifnet *));
static void ax_ifmedia_sts __P((struct ifnet *, struct ifmediareq *));
static void ax_delay __P((struct ax_softc *));
static void ax_eeprom_idle __P((struct ax_softc *));
static void ax_eeprom_putbyte __P((struct ax_softc *, int));
static void ax_eeprom_getword __P((struct ax_softc *, int, u_int16_t *));
static void ax_read_eeprom __P((struct ax_softc *, caddr_t, int,
int, int));
static void ax_mii_writebit __P((struct ax_softc *, int));
static int ax_mii_readbit __P((struct ax_softc *));
static void ax_mii_sync __P((struct ax_softc *));
static void ax_mii_send __P((struct ax_softc *, u_int32_t, int));
static int ax_mii_readreg __P((struct ax_softc *, struct ax_mii_frame *));
static int ax_mii_writereg __P((struct ax_softc *, struct ax_mii_frame *));
static u_int16_t ax_phy_readreg __P((struct ax_softc *, int));
static void ax_phy_writereg __P((struct ax_softc *, int, int));
static void ax_autoneg_xmit __P((struct ax_softc *));
static void ax_autoneg_mii __P((struct ax_softc *, int, int));
static void ax_setmode_mii __P((struct ax_softc *, int));
static void ax_setmode __P((struct ax_softc *, int, int));
static void ax_getmode_mii __P((struct ax_softc *));
static void ax_setcfg __P((struct ax_softc *, int));
static u_int32_t ax_calchash __P((caddr_t));
static void ax_setmulti __P((struct ax_softc *));
static void ax_reset __P((struct ax_softc *));
static int ax_list_rx_init __P((struct ax_softc *));
static int ax_list_tx_init __P((struct ax_softc *));
#ifdef AX_USEIOSPACE
#define AX_RES SYS_RES_IOPORT
#define AX_RID AX_PCI_LOIO
#else
#define AX_RES SYS_RES_IOPORT
#define AX_RID AX_PCI_LOIO
#endif
static device_method_t ax_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ax_probe),
DEVMETHOD(device_attach, ax_attach),
DEVMETHOD(device_detach, ax_detach),
DEVMETHOD(device_shutdown, ax_shutdown),
{ 0, 0 }
};
static driver_t ax_driver = {
"ax",
ax_methods,
sizeof(struct ax_softc)
};
static devclass_t ax_devclass;
DRIVER_MODULE(if_ax, pci, ax_driver, ax_devclass, 0, 0);
#define AX_SETBIT(sc, reg, x) \
CSR_WRITE_4(sc, reg, \
CSR_READ_4(sc, reg) | x)
#define AX_CLRBIT(sc, reg, x) \
CSR_WRITE_4(sc, reg, \
CSR_READ_4(sc, reg) & ~x)
#define SIO_SET(x) \
CSR_WRITE_4(sc, AX_SIO, \
CSR_READ_4(sc, AX_SIO) | x)
#define SIO_CLR(x) \
CSR_WRITE_4(sc, AX_SIO, \
CSR_READ_4(sc, AX_SIO) & ~x)
static void ax_delay(sc)
struct ax_softc *sc;
{
int idx;
for (idx = (300 / 33) + 1; idx > 0; idx--)
CSR_READ_4(sc, AX_BUSCTL);
}
static void ax_eeprom_idle(sc)
struct ax_softc *sc;
{
register int i;
CSR_WRITE_4(sc, AX_SIO, AX_SIO_EESEL);
ax_delay(sc);
AX_SETBIT(sc, AX_SIO, AX_SIO_ROMCTL_READ);
ax_delay(sc);
AX_SETBIT(sc, AX_SIO, AX_SIO_EE_CS);
ax_delay(sc);
AX_SETBIT(sc, AX_SIO, AX_SIO_EE_CLK);
ax_delay(sc);
for (i = 0; i < 25; i++) {
AX_CLRBIT(sc, AX_SIO, AX_SIO_EE_CLK);
ax_delay(sc);
AX_SETBIT(sc, AX_SIO, AX_SIO_EE_CLK);
ax_delay(sc);
}
AX_CLRBIT(sc, AX_SIO, AX_SIO_EE_CLK);
ax_delay(sc);
AX_CLRBIT(sc, AX_SIO, AX_SIO_EE_CS);
ax_delay(sc);
CSR_WRITE_4(sc, AX_SIO, 0x00000000);
return;
}
/*
* Send a read command and address to the EEPROM, check for ACK.
*/
static void ax_eeprom_putbyte(sc, addr)
struct ax_softc *sc;
int addr;
{
register int d, i;
d = addr | AX_EECMD_READ;
/*
* Feed in each bit and stobe the clock.
*/
for (i = 0x400; i; i >>= 1) {
if (d & i) {
SIO_SET(AX_SIO_EE_DATAIN);
} else {
SIO_CLR(AX_SIO_EE_DATAIN);
}
ax_delay(sc);
SIO_SET(AX_SIO_EE_CLK);
ax_delay(sc);
SIO_CLR(AX_SIO_EE_CLK);
ax_delay(sc);
}
return;
}
/*
* Read a word of data stored in the EEPROM at address 'addr.'
*/
static void ax_eeprom_getword(sc, addr, dest)
struct ax_softc *sc;
int addr;
u_int16_t *dest;
{
register int i;
u_int16_t word = 0;
/* Force EEPROM to idle state. */
ax_eeprom_idle(sc);
/* Enter EEPROM access mode. */
CSR_WRITE_4(sc, AX_SIO, AX_SIO_EESEL);
ax_delay(sc);
AX_SETBIT(sc, AX_SIO, AX_SIO_ROMCTL_READ);
ax_delay(sc);
AX_SETBIT(sc, AX_SIO, AX_SIO_EE_CS);
ax_delay(sc);
AX_SETBIT(sc, AX_SIO, AX_SIO_EE_CLK);
ax_delay(sc);
/*
* Send address of word we want to read.
*/
ax_eeprom_putbyte(sc, addr);
/*
* Start reading bits from EEPROM.
*/
for (i = 0x8000; i; i >>= 1) {
SIO_SET(AX_SIO_EE_CLK);
ax_delay(sc);
if (CSR_READ_4(sc, AX_SIO) & AX_SIO_EE_DATAOUT)
word |= i;
ax_delay(sc);
SIO_CLR(AX_SIO_EE_CLK);
ax_delay(sc);
}
/* Turn off EEPROM access mode. */
ax_eeprom_idle(sc);
*dest = word;
return;
}
/*
* Read a sequence of words from the EEPROM.
*/
static void ax_read_eeprom(sc, dest, off, cnt, swap)
struct ax_softc *sc;
caddr_t dest;
int off;
int cnt;
int swap;
{
int i;
u_int16_t word = 0, *ptr;
for (i = 0; i < cnt; i++) {
ax_eeprom_getword(sc, off + i, &word);
ptr = (u_int16_t *)(dest + (i * 2));
if (swap)
*ptr = ntohs(word);
else
*ptr = word;
}
return;
}
/*
* Write a bit to the MII bus.
*/
static void ax_mii_writebit(sc, bit)
struct ax_softc *sc;
int bit;
{
if (bit)
CSR_WRITE_4(sc, AX_SIO, AX_SIO_ROMCTL_WRITE|AX_SIO_MII_DATAOUT);
else
CSR_WRITE_4(sc, AX_SIO, AX_SIO_ROMCTL_WRITE);
AX_SETBIT(sc, AX_SIO, AX_SIO_MII_CLK);
AX_CLRBIT(sc, AX_SIO, AX_SIO_MII_CLK);
return;
}
/*
* Read a bit from the MII bus.
*/
static int ax_mii_readbit(sc)
struct ax_softc *sc;
{
CSR_WRITE_4(sc, AX_SIO, AX_SIO_ROMCTL_READ|AX_SIO_MII_DIR);
CSR_READ_4(sc, AX_SIO);
AX_SETBIT(sc, AX_SIO, AX_SIO_MII_CLK);
AX_CLRBIT(sc, AX_SIO, AX_SIO_MII_CLK);
if (CSR_READ_4(sc, AX_SIO) & AX_SIO_MII_DATAIN)
return(1);
return(0);
}
/*
* Sync the PHYs by setting data bit and strobing the clock 32 times.
*/
static void ax_mii_sync(sc)
struct ax_softc *sc;
{
register int i;
CSR_WRITE_4(sc, AX_SIO, AX_SIO_ROMCTL_WRITE);
for (i = 0; i < 32; i++)
ax_mii_writebit(sc, 1);
return;
}
/*
* Clock a series of bits through the MII.
*/
static void ax_mii_send(sc, bits, cnt)
struct ax_softc *sc;
u_int32_t bits;
int cnt;
{
int i;
for (i = (0x1 << (cnt - 1)); i; i >>= 1)
ax_mii_writebit(sc, bits & i);
}
/*
* Read an PHY register through the MII.
*/
static int ax_mii_readreg(sc, frame)
struct ax_softc *sc;
struct ax_mii_frame *frame;
{
int i, ack, s;
s = splimp();
/*
* Set up frame for RX.
*/
frame->mii_stdelim = AX_MII_STARTDELIM;
frame->mii_opcode = AX_MII_READOP;
frame->mii_turnaround = 0;
frame->mii_data = 0;
/*
* Sync the PHYs.
*/
ax_mii_sync(sc);
/*
* Send command/address info.
*/
ax_mii_send(sc, frame->mii_stdelim, 2);
ax_mii_send(sc, frame->mii_opcode, 2);
ax_mii_send(sc, frame->mii_phyaddr, 5);
ax_mii_send(sc, frame->mii_regaddr, 5);
#ifdef notdef
/* Idle bit */
ax_mii_writebit(sc, 1);
ax_mii_writebit(sc, 0);
#endif
/* Check for ack */
ack = ax_mii_readbit(sc);
/*
* Now try reading data bits. If the ack failed, we still
* need to clock through 16 cycles to keep the PHY(s) in sync.
*/
if (ack) {
for(i = 0; i < 16; i++) {
ax_mii_readbit(sc);
}
goto fail;
}
for (i = 0x8000; i; i >>= 1) {
if (!ack) {
if (ax_mii_readbit(sc))
frame->mii_data |= i;
}
}
fail:
ax_mii_writebit(sc, 0);
ax_mii_writebit(sc, 0);
splx(s);
if (ack)
return(1);
return(0);
}
/*
* Write to a PHY register through the MII.
*/
static int ax_mii_writereg(sc, frame)
struct ax_softc *sc;
struct ax_mii_frame *frame;
{
int s;
s = splimp();
/*
* Set up frame for TX.
*/
frame->mii_stdelim = AX_MII_STARTDELIM;
frame->mii_opcode = AX_MII_WRITEOP;
frame->mii_turnaround = AX_MII_TURNAROUND;
/*
* Sync the PHYs.
*/
ax_mii_sync(sc);
ax_mii_send(sc, frame->mii_stdelim, 2);
ax_mii_send(sc, frame->mii_opcode, 2);
ax_mii_send(sc, frame->mii_phyaddr, 5);
ax_mii_send(sc, frame->mii_regaddr, 5);
ax_mii_send(sc, frame->mii_turnaround, 2);
ax_mii_send(sc, frame->mii_data, 16);
/* Idle bit. */
ax_mii_writebit(sc, 0);
ax_mii_writebit(sc, 0);
splx(s);
return(0);
}
static u_int16_t ax_phy_readreg(sc, reg)
struct ax_softc *sc;
int reg;
{
struct ax_mii_frame frame;
bzero((char *)&frame, sizeof(frame));
frame.mii_phyaddr = sc->ax_phy_addr;
frame.mii_regaddr = reg;
ax_mii_readreg(sc, &frame);
return(frame.mii_data);
}
static void ax_phy_writereg(sc, reg, data)
struct ax_softc *sc;
int reg;
int data;
{
struct ax_mii_frame frame;
bzero((char *)&frame, sizeof(frame));
frame.mii_phyaddr = sc->ax_phy_addr;
frame.mii_regaddr = reg;
frame.mii_data = data;
ax_mii_writereg(sc, &frame);
return;
}
/*
* Calculate CRC of a multicast group address, return the lower 6 bits.
*/
static u_int32_t ax_calchash(addr)
caddr_t addr;
{
u_int32_t crc, carry;
int i, j;
u_int8_t c;
/* Compute CRC for the address value. */
crc = 0xFFFFFFFF; /* initial value */
for (i = 0; i < 6; i++) {
c = *(addr + i);
for (j = 0; j < 8; j++) {
carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01);
crc <<= 1;
c >>= 1;
if (carry)
crc = (crc ^ 0x04c11db6) | carry;
}
}
/* return the filter bit position */
return((crc >> 26) & 0x0000003F);
}
static void ax_setmulti(sc)
struct ax_softc *sc;
{
struct ifnet *ifp;
int h = 0;
u_int32_t hashes[2] = { 0, 0 };
struct ifmultiaddr *ifma;
u_int32_t rxfilt;
ifp = &sc->arpcom.ac_if;
rxfilt = CSR_READ_4(sc, AX_NETCFG);
if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
rxfilt |= AX_NETCFG_RX_ALLMULTI;
CSR_WRITE_4(sc, AX_NETCFG, rxfilt);
return;
} else
rxfilt &= ~AX_NETCFG_RX_ALLMULTI;
/* first, zot all the existing hash bits */
CSR_WRITE_4(sc, AX_FILTIDX, AX_FILTIDX_MAR0);
CSR_WRITE_4(sc, AX_FILTDATA, 0);
CSR_WRITE_4(sc, AX_FILTIDX, AX_FILTIDX_MAR1);
CSR_WRITE_4(sc, AX_FILTDATA, 0);
/* now program new ones */
for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
ifma = ifma->ifma_link.le_next) {
if (ifma->ifma_addr->sa_family != AF_LINK)
continue;
h = ax_calchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
if (h < 32)
hashes[0] |= (1 << h);
else
hashes[1] |= (1 << (h - 32));
}
CSR_WRITE_4(sc, AX_FILTIDX, AX_FILTIDX_MAR0);
CSR_WRITE_4(sc, AX_FILTDATA, hashes[0]);
CSR_WRITE_4(sc, AX_FILTIDX, AX_FILTIDX_MAR1);
CSR_WRITE_4(sc, AX_FILTDATA, hashes[1]);
CSR_WRITE_4(sc, AX_NETCFG, rxfilt);
return;
}
/*
* Initiate an autonegotiation session.
*/
static void ax_autoneg_xmit(sc)
struct ax_softc *sc;
{
u_int16_t phy_sts;
ax_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET);
DELAY(500);
while(ax_phy_readreg(sc, PHY_BMCR)
& PHY_BMCR_RESET);
phy_sts = ax_phy_readreg(sc, PHY_BMCR);
phy_sts |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR;
ax_phy_writereg(sc, PHY_BMCR, phy_sts);
return;
}
/*
* Invoke autonegotiation on a PHY.
*/
static void ax_autoneg_mii(sc, flag, verbose)
struct ax_softc *sc;
int flag;
int verbose;
{
u_int16_t phy_sts = 0, media, advert, ability;
struct ifnet *ifp;
struct ifmedia *ifm;
ifm = &sc->ifmedia;
ifp = &sc->arpcom.ac_if;
ifm->ifm_media = IFM_ETHER | IFM_AUTO;
/*
* The 100baseT4 PHY on the 3c905-T4 has the 'autoneg supported'
* bit cleared in the status register, but has the 'autoneg enabled'
* bit set in the control register. This is a contradiction, and
* I'm not sure how to handle it. If you want to force an attempt
* to autoneg for 100baseT4 PHYs, #define FORCE_AUTONEG_TFOUR
* and see what happens.
*/
#ifndef FORCE_AUTONEG_TFOUR
/*
* First, see if autoneg is supported. If not, there's
* no point in continuing.
*/
phy_sts = ax_phy_readreg(sc, PHY_BMSR);
if (!(phy_sts & PHY_BMSR_CANAUTONEG)) {
if (verbose)
printf("ax%d: autonegotiation not supported\n",
sc->ax_unit);
ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX;
return;
}
#endif
switch (flag) {
case AX_FLAG_FORCEDELAY:
/*
* XXX Never use this option anywhere but in the probe
* routine: making the kernel stop dead in its tracks
* for three whole seconds after we've gone multi-user
* is really bad manners.
*/
ax_autoneg_xmit(sc);
DELAY(5000000);
break;
case AX_FLAG_SCHEDDELAY:
/*
* Wait for the transmitter to go idle before starting
* an autoneg session, otherwise ax_start() may clobber
* our timeout, and we don't want to allow transmission
* during an autoneg session since that can screw it up.
*/
if (sc->ax_cdata.ax_tx_head != NULL) {
sc->ax_want_auto = 1;
return;
}
ax_autoneg_xmit(sc);
ifp->if_timer = 5;
sc->ax_autoneg = 1;
sc->ax_want_auto = 0;
return;
break;
case AX_FLAG_DELAYTIMEO:
ifp->if_timer = 0;
sc->ax_autoneg = 0;
break;
default:
printf("ax%d: invalid autoneg flag: %d\n", sc->ax_unit, flag);
return;
}
if (ax_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_AUTONEGCOMP) {
if (verbose)
printf("ax%d: autoneg complete, ", sc->ax_unit);
phy_sts = ax_phy_readreg(sc, PHY_BMSR);
} else {
if (verbose)
printf("ax%d: autoneg not complete, ", sc->ax_unit);
}
media = ax_phy_readreg(sc, PHY_BMCR);
/* Link is good. Report modes and set duplex mode. */
if (ax_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT) {
if (verbose)
printf("link status good ");
advert = ax_phy_readreg(sc, PHY_ANAR);
ability = ax_phy_readreg(sc, PHY_LPAR);
if (advert & PHY_ANAR_100BT4 && ability & PHY_ANAR_100BT4) {
ifm->ifm_media = IFM_ETHER|IFM_100_T4;
media |= PHY_BMCR_SPEEDSEL;
media &= ~PHY_BMCR_DUPLEX;
printf("(100baseT4)\n");
} else if (advert & PHY_ANAR_100BTXFULL &&
ability & PHY_ANAR_100BTXFULL) {
ifm->ifm_media = IFM_ETHER|IFM_100_TX|IFM_FDX;
media |= PHY_BMCR_SPEEDSEL;
media |= PHY_BMCR_DUPLEX;
printf("(full-duplex, 100Mbps)\n");
} else if (advert & PHY_ANAR_100BTXHALF &&
ability & PHY_ANAR_100BTXHALF) {
ifm->ifm_media = IFM_ETHER|IFM_100_TX|IFM_HDX;
media |= PHY_BMCR_SPEEDSEL;
media &= ~PHY_BMCR_DUPLEX;
printf("(half-duplex, 100Mbps)\n");
} else if (advert & PHY_ANAR_10BTFULL &&
ability & PHY_ANAR_10BTFULL) {
ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_FDX;
media &= ~PHY_BMCR_SPEEDSEL;
media |= PHY_BMCR_DUPLEX;
printf("(full-duplex, 10Mbps)\n");
} else if (advert & PHY_ANAR_10BTHALF &&
ability & PHY_ANAR_10BTHALF) {
ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX;
media &= ~PHY_BMCR_SPEEDSEL;
media &= ~PHY_BMCR_DUPLEX;
printf("(half-duplex, 10Mbps)\n");
}
media &= ~PHY_BMCR_AUTONEGENBL;
/* Set ASIC's duplex mode to match the PHY. */
ax_setcfg(sc, media);
ax_phy_writereg(sc, PHY_BMCR, media);
} else {
if (verbose)
printf("no carrier\n");
}
ax_init(sc);
if (sc->ax_tx_pend) {
sc->ax_autoneg = 0;
sc->ax_tx_pend = 0;
ax_start(ifp);
}
return;
}
static void ax_getmode_mii(sc)
struct ax_softc *sc;
{
u_int16_t bmsr;
struct ifnet *ifp;
ifp = &sc->arpcom.ac_if;
bmsr = ax_phy_readreg(sc, PHY_BMSR);
if (bootverbose)
printf("ax%d: PHY status word: %x\n", sc->ax_unit, bmsr);
/* fallback */
sc->ifmedia.ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX;
if (bmsr & PHY_BMSR_10BTHALF) {
if (bootverbose)
printf("ax%d: 10Mbps half-duplex mode supported\n",
sc->ax_unit);
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL);
}
if (bmsr & PHY_BMSR_10BTFULL) {
if (bootverbose)
printf("ax%d: 10Mbps full-duplex mode supported\n",
sc->ax_unit);
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
sc->ifmedia.ifm_media = IFM_ETHER|IFM_10_T|IFM_FDX;
}
if (bmsr & PHY_BMSR_100BTXHALF) {
if (bootverbose)
printf("ax%d: 100Mbps half-duplex mode supported\n",
sc->ax_unit);
ifp->if_baudrate = 100000000;
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_TX, 0, NULL);
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_100_TX|IFM_HDX, 0, NULL);
sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_TX|IFM_HDX;
}
if (bmsr & PHY_BMSR_100BTXFULL) {
if (bootverbose)
printf("ax%d: 100Mbps full-duplex mode supported\n",
sc->ax_unit);
ifp->if_baudrate = 100000000;
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_100_TX|IFM_FDX, 0, NULL);
sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_TX|IFM_FDX;
}
/* Some also support 100BaseT4. */
if (bmsr & PHY_BMSR_100BT4) {
if (bootverbose)
printf("ax%d: 100baseT4 mode supported\n", sc->ax_unit);
ifp->if_baudrate = 100000000;
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_T4, 0, NULL);
sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_T4;
#ifdef FORCE_AUTONEG_TFOUR
if (bootverbose)
printf("ax%d: forcing on autoneg support for BT4\n",
sc->ax_unit);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0 NULL):
sc->ifmedia.ifm_media = IFM_ETHER|IFM_AUTO;
#endif
}
if (bmsr & PHY_BMSR_CANAUTONEG) {
if (bootverbose)
printf("ax%d: autoneg supported\n", sc->ax_unit);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
sc->ifmedia.ifm_media = IFM_ETHER|IFM_AUTO;
}
return;
}
/*
* Set speed and duplex mode.
*/
static void ax_setmode_mii(sc, media)
struct ax_softc *sc;
int media;
{
u_int16_t bmcr;
struct ifnet *ifp;
ifp = &sc->arpcom.ac_if;
/*
* If an autoneg session is in progress, stop it.
*/
if (sc->ax_autoneg) {
printf("ax%d: canceling autoneg session\n", sc->ax_unit);
ifp->if_timer = sc->ax_autoneg = sc->ax_want_auto = 0;
bmcr = ax_phy_readreg(sc, PHY_BMCR);
bmcr &= ~PHY_BMCR_AUTONEGENBL;
ax_phy_writereg(sc, PHY_BMCR, bmcr);
}
printf("ax%d: selecting MII, ", sc->ax_unit);
bmcr = ax_phy_readreg(sc, PHY_BMCR);
bmcr &= ~(PHY_BMCR_AUTONEGENBL|PHY_BMCR_SPEEDSEL|
PHY_BMCR_DUPLEX|PHY_BMCR_LOOPBK);
if (IFM_SUBTYPE(media) == IFM_100_T4) {
printf("100Mbps/T4, half-duplex\n");
bmcr |= PHY_BMCR_SPEEDSEL;
bmcr &= ~PHY_BMCR_DUPLEX;
}
if (IFM_SUBTYPE(media) == IFM_100_TX) {
printf("100Mbps, ");
bmcr |= PHY_BMCR_SPEEDSEL;
}
if (IFM_SUBTYPE(media) == IFM_10_T) {
printf("10Mbps, ");
bmcr &= ~PHY_BMCR_SPEEDSEL;
}
if ((media & IFM_GMASK) == IFM_FDX) {
printf("full duplex\n");
bmcr |= PHY_BMCR_DUPLEX;
} else {
printf("half duplex\n");
bmcr &= ~PHY_BMCR_DUPLEX;
}
ax_setcfg(sc, bmcr);
ax_phy_writereg(sc, PHY_BMCR, bmcr);
return;
}
/*
* Set speed and duplex mode on internal transceiver.
*/
static void ax_setmode(sc, media, verbose)
struct ax_softc *sc;
int media;
int verbose;
{
struct ifnet *ifp;
u_int32_t mode;
ifp = &sc->arpcom.ac_if;
if (verbose)
printf("ax%d: selecting internal xcvr, ", sc->ax_unit);
mode = CSR_READ_4(sc, AX_NETCFG);
mode &= ~(AX_NETCFG_FULLDUPLEX|AX_NETCFG_PORTSEL|
AX_NETCFG_PCS|AX_NETCFG_SCRAMBLER|AX_NETCFG_SPEEDSEL);
if (IFM_SUBTYPE(media) == IFM_100_T4) {
if (verbose)
printf("100Mbps/T4, half-duplex\n");
mode |= AX_NETCFG_PORTSEL|AX_NETCFG_PCS|AX_NETCFG_SCRAMBLER;
}
if (IFM_SUBTYPE(media) == IFM_100_TX) {
if (verbose)
printf("100Mbps, ");
mode |= AX_NETCFG_PORTSEL|AX_NETCFG_PCS|AX_NETCFG_SCRAMBLER;
}
if (IFM_SUBTYPE(media) == IFM_10_T) {
if (verbose)
printf("10Mbps, ");
mode &= ~AX_NETCFG_PORTSEL;
mode |= AX_NETCFG_SPEEDSEL;
}
if ((media & IFM_GMASK) == IFM_FDX) {
if (verbose)
printf("full duplex\n");
mode |= AX_NETCFG_FULLDUPLEX;
} else {
if (verbose)
printf("half duplex\n");
mode &= ~AX_NETCFG_FULLDUPLEX;
}
CSR_WRITE_4(sc, AX_NETCFG, mode);
return;
}
/*
* In order to fiddle with the
* 'full-duplex' and '100Mbps' bits in the netconfig register, we
* first have to put the transmit and/or receive logic in the idle state.
*/
static void ax_setcfg(sc, bmcr)
struct ax_softc *sc;
int bmcr;
{
int i, restart = 0;
if (CSR_READ_4(sc, AX_NETCFG) & (AX_NETCFG_TX_ON|AX_NETCFG_RX_ON)) {
restart = 1;
AX_CLRBIT(sc, AX_NETCFG, (AX_NETCFG_TX_ON|AX_NETCFG_RX_ON));
for (i = 0; i < AX_TIMEOUT; i++) {
DELAY(10);
if (CSR_READ_4(sc, AX_ISR) & AX_ISR_TX_IDLE)
break;
}
if (i == AX_TIMEOUT)
printf("ax%d: failed to force tx and "
"rx to idle state\n", sc->ax_unit);
}
if (bmcr & PHY_BMCR_SPEEDSEL)
AX_CLRBIT(sc, AX_NETCFG, AX_NETCFG_SPEEDSEL);
else
AX_SETBIT(sc, AX_NETCFG, AX_NETCFG_SPEEDSEL);
if (bmcr & PHY_BMCR_DUPLEX)
AX_SETBIT(sc, AX_NETCFG, AX_NETCFG_FULLDUPLEX);
else
AX_CLRBIT(sc, AX_NETCFG, AX_NETCFG_FULLDUPLEX);
if (restart)
AX_SETBIT(sc, AX_NETCFG, AX_NETCFG_TX_ON|AX_NETCFG_RX_ON);
return;
}
static void ax_reset(sc)
struct ax_softc *sc;
{
register int i;
AX_SETBIT(sc, AX_BUSCTL, AX_BUSCTL_RESET);
for (i = 0; i < AX_TIMEOUT; i++) {
DELAY(10);
if (!(CSR_READ_4(sc, AX_BUSCTL) & AX_BUSCTL_RESET))
break;
}
#ifdef notdef
if (i == AX_TIMEOUT)
printf("ax%d: reset never completed!\n", sc->ax_unit);
#endif
CSR_WRITE_4(sc, AX_BUSCTL, AX_BUSCTL_CONFIG);
/* Wait a little while for the chip to get its brains in order. */
DELAY(1000);
return;
}
/*
* Probe for an ASIX chip. Check the PCI vendor and device
* IDs against our list and return a device name if we find a match.
*/
int ax_probe(dev)
device_t dev;
{
struct ax_type *t;
u_int32_t rev;
t = ax_devs;
while(t->ax_name != NULL) {
if ((pci_get_vendor(dev) == t->ax_vid) &&
(pci_get_device(dev) == t->ax_did)) {
/* Check the PCI revision */
rev = pci_read_config(dev, AX_PCI_REVID, 4) & 0xFF;
if (rev >= AX_REVISION_88141)
t++;
device_set_desc(dev, t->ax_name);
return(0);
}
t++;
}
return(ENXIO);
}
/*
* Attach the interface. Allocate softc structures, do ifmedia
* setup and ethernet/BPF attach.
*/
static int ax_attach(dev)
device_t dev;
{
int s, i;
u_char eaddr[ETHER_ADDR_LEN];
u_int32_t command;
struct ax_softc *sc;
struct ifnet *ifp;
int media = IFM_ETHER|IFM_100_TX|IFM_FDX;
unsigned int round;
caddr_t roundptr;
struct ax_type *p;
u_int16_t phy_vid, phy_did, phy_sts;
int unit, error = 0, rid;
s = splimp();
sc = device_get_softc(dev);
unit = device_get_unit(dev);
bzero(sc, sizeof(struct ax_softc));
/*
* Handle power management nonsense.
*/
command = pci_read_config(dev, AX_PCI_CAPID, 4) & 0x000000FF;
if (command == 0x01) {
command = pci_read_config(dev, AX_PCI_PWRMGMTCTRL, 4);
if (command & AX_PSTATE_MASK) {
u_int32_t iobase, membase, irq;
/* Save important PCI config data. */
iobase = pci_read_config(dev, AX_PCI_LOIO, 4);
membase = pci_read_config(dev, AX_PCI_LOMEM, 4);
irq = pci_read_config(dev, AX_PCI_INTLINE, 4);
/* Reset the power state. */
printf("ax%d: chip is in D%d power mode "
"-- setting to D0\n", unit, command & AX_PSTATE_MASK);
command &= 0xFFFFFFFC;
pci_write_config(dev, AX_PCI_PWRMGMTCTRL, command, 4);
/* Restore PCI config data. */
pci_write_config(dev, AX_PCI_LOIO, iobase, 4);
pci_write_config(dev, AX_PCI_LOMEM, membase, 4);
pci_write_config(dev, AX_PCI_INTLINE, irq, 4);
}
}
/*
* Map control/status registers.
*/
command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4);
command |= (PCIM_CMD_PORTEN|PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
pci_write_config(dev, PCI_COMMAND_STATUS_REG, command, 4);
command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4);
#ifdef AX_USEIOSPACE
if (!(command & PCIM_CMD_PORTEN)) {
printf("ax%d: failed to enable I/O ports!\n", unit);
error = ENXIO;;
goto fail;
}
#else
if (!(command & PCIM_CMD_MEMEN)) {
printf("ax%d: failed to enable memory mapping!\n", unit);
error = ENXIO;;
goto fail;
}
#endif
rid = AX_RID;
sc->ax_res = bus_alloc_resource(dev, AX_RES, &rid,
0, ~0, 1, RF_ACTIVE);
if (sc->ax_res == NULL) {
printf("ax%d: couldn't map ports/memory\n", unit);
error = ENXIO;
goto fail;
}
sc->ax_btag = rman_get_bustag(sc->ax_res);
sc->ax_bhandle = rman_get_bushandle(sc->ax_res);
/* Allocate interrupt */
rid = 0;
sc->ax_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_SHAREABLE | RF_ACTIVE);
if (sc->ax_irq == NULL) {
printf("ax%d: couldn't map interrupt\n", unit);
bus_release_resource(dev, AX_RES, AX_RID, sc->ax_res);
error = ENXIO;
goto fail;
}
error = bus_setup_intr(dev, sc->ax_irq, INTR_TYPE_NET,
ax_intr, sc, &sc->ax_intrhand);
if (error) {
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->ax_res);
bus_release_resource(dev, AX_RES, AX_RID, sc->ax_res);
printf("ax%d: couldn't set up irq\n", unit);
goto fail;
}
/* Reset the adapter. */
ax_reset(sc);
/*
* Get station address from the EEPROM.
*/
ax_read_eeprom(sc, (caddr_t)&eaddr, AX_EE_NODEADDR, 3, 0);
/*
* An ASIX chip was detected. Inform the world.
*/
printf("ax%d: Ethernet address: %6D\n", unit, eaddr, ":");
sc->ax_unit = unit;
bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
sc->ax_ldata_ptr = malloc(sizeof(struct ax_list_data) + 8,
M_DEVBUF, M_NOWAIT);
if (sc->ax_ldata_ptr == NULL) {
printf("ax%d: no memory for list buffers!\n", unit);
bus_teardown_intr(dev, sc->ax_irq, sc->ax_intrhand);
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->ax_res);
bus_release_resource(dev, AX_RES, AX_RID, sc->ax_res);
error = ENXIO;
goto fail;
}
sc->ax_ldata = (struct ax_list_data *)sc->ax_ldata_ptr;
round = (uintptr_t)sc->ax_ldata_ptr & 0xF;
roundptr = sc->ax_ldata_ptr;
for (i = 0; i < 8; i++) {
if (round % 8) {
round++;
roundptr++;
} else
break;
}
sc->ax_ldata = (struct ax_list_data *)roundptr;
bzero(sc->ax_ldata, sizeof(struct ax_list_data));
ifp = &sc->arpcom.ac_if;
ifp->if_softc = sc;
ifp->if_unit = unit;
ifp->if_name = "ax";
ifp->if_mtu = ETHERMTU;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = ax_ioctl;
ifp->if_output = ether_output;
ifp->if_start = ax_start;
ifp->if_watchdog = ax_watchdog;
ifp->if_init = ax_init;
ifp->if_baudrate = 10000000;
ifp->if_snd.ifq_maxlen = AX_TX_LIST_CNT - 1;
if (bootverbose)
printf("ax%d: probing for a PHY\n", sc->ax_unit);
for (i = AX_PHYADDR_MIN; i < AX_PHYADDR_MAX + 1; i++) {
if (bootverbose)
printf("ax%d: checking address: %d\n",
sc->ax_unit, i);
sc->ax_phy_addr = i;
ax_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET);
DELAY(500);
while(ax_phy_readreg(sc, PHY_BMCR)
& PHY_BMCR_RESET);
if ((phy_sts = ax_phy_readreg(sc, PHY_BMSR)))
break;
}
if (phy_sts) {
phy_vid = ax_phy_readreg(sc, PHY_VENID);
phy_did = ax_phy_readreg(sc, PHY_DEVID);
if (bootverbose)
printf("ax%d: found PHY at address %d, ",
sc->ax_unit, sc->ax_phy_addr);
if (bootverbose)
printf("vendor id: %x device id: %x\n",
phy_vid, phy_did);
p = ax_phys;
while(p->ax_vid) {
if (phy_vid == p->ax_vid &&
(phy_did | 0x000F) == p->ax_did) {
sc->ax_pinfo = p;
break;
}
p++;
}
if (sc->ax_pinfo == NULL)
sc->ax_pinfo = &ax_phys[PHY_UNKNOWN];
if (bootverbose)
printf("ax%d: PHY type: %s\n",
sc->ax_unit, sc->ax_pinfo->ax_name);
} else {
#ifdef DIAGNOSTIC
printf("ax%d: MII without any phy!\n", sc->ax_unit);
#endif
}
/*
* Do ifmedia setup.
*/
ifmedia_init(&sc->ifmedia, 0, ax_ifmedia_upd, ax_ifmedia_sts);
if (sc->ax_pinfo != NULL) {
ax_getmode_mii(sc);
if (cold) {
ax_autoneg_mii(sc, AX_FLAG_FORCEDELAY, 1);
ax_stop(sc);
} else {
ax_init(sc);
ax_autoneg_mii(sc, AX_FLAG_SCHEDDELAY, 1);
}
} else {
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL);
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_100_TX|IFM_HDX, 0, NULL);
ifmedia_add(&sc->ifmedia,
IFM_ETHER|IFM_100_TX|IFM_FDX, 0, NULL);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_TX, 0, NULL);
ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
}
media = sc->ifmedia.ifm_media;
ifmedia_set(&sc->ifmedia, media);
/*
* Call MI attach routines.
*/
if_attach(ifp);
ether_ifattach(ifp);
bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
fail:
splx(s);
return(error);
}
static int ax_detach(dev)
device_t dev;
{
struct ax_softc *sc;
struct ifnet *ifp;
int s;
s = splimp();
sc = device_get_softc(dev);
ifp = &sc->arpcom.ac_if;
ax_stop(sc);
if_detach(ifp);
bus_teardown_intr(dev, sc->ax_irq, sc->ax_intrhand);
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->ax_res);
bus_release_resource(dev, AX_RES, AX_RID, sc->ax_res);
free(sc->ax_ldata_ptr, M_DEVBUF);
ifmedia_removeall(&sc->ifmedia);
splx(s);
return(0);
}
/*
* Initialize the transmit descriptors.
*/
static int ax_list_tx_init(sc)
struct ax_softc *sc;
{
struct ax_chain_data *cd;
struct ax_list_data *ld;
int i;
cd = &sc->ax_cdata;
ld = sc->ax_ldata;
for (i = 0; i < AX_TX_LIST_CNT; i++) {
cd->ax_tx_chain[i].ax_ptr = &ld->ax_tx_list[i];
if (i == (AX_TX_LIST_CNT - 1))
cd->ax_tx_chain[i].ax_nextdesc =
&cd->ax_tx_chain[0];
else
cd->ax_tx_chain[i].ax_nextdesc =
&cd->ax_tx_chain[i + 1];
}
cd->ax_tx_free = &cd->ax_tx_chain[0];
cd->ax_tx_tail = cd->ax_tx_head = NULL;
return(0);
}
/*
* Initialize the RX descriptors and allocate mbufs for them. Note that
* we arrange the descriptors in a closed ring, so that the last descriptor
* points back to the first.
*/
static int ax_list_rx_init(sc)
struct ax_softc *sc;
{
struct ax_chain_data *cd;
struct ax_list_data *ld;
int i;
cd = &sc->ax_cdata;
ld = sc->ax_ldata;
for (i = 0; i < AX_RX_LIST_CNT; i++) {
cd->ax_rx_chain[i].ax_ptr =
(volatile struct ax_desc *)&ld->ax_rx_list[i];
if (ax_newbuf(sc, &cd->ax_rx_chain[i], NULL) == ENOBUFS)
return(ENOBUFS);
if (i == (AX_RX_LIST_CNT - 1)) {
cd->ax_rx_chain[i].ax_nextdesc =
&cd->ax_rx_chain[0];
ld->ax_rx_list[i].ax_next =
vtophys(&ld->ax_rx_list[0]);
} else {
cd->ax_rx_chain[i].ax_nextdesc =
&cd->ax_rx_chain[i + 1];
ld->ax_rx_list[i].ax_next =
vtophys(&ld->ax_rx_list[i + 1]);
}
}
cd->ax_rx_head = &cd->ax_rx_chain[0];
return(0);
}
/*
* Initialize an RX descriptor and attach an MBUF cluster.
* Note: the length fields are only 11 bits wide, which means the
* largest size we can specify is 2047. This is important because
* MCLBYTES is 2048, so we have to subtract one otherwise we'll
* overflow the field and make a mess.
*/
static int ax_newbuf(sc, c, m)
struct ax_softc *sc;
struct ax_chain_onefrag *c;
struct mbuf *m;
{
struct mbuf *m_new = NULL;
if (m == NULL) {
MGETHDR(m_new, M_DONTWAIT, MT_DATA);
if (m_new == NULL) {
printf("ax%d: no memory for rx list "
"-- packet dropped!\n", sc->ax_unit);
return(ENOBUFS);
}
MCLGET(m_new, M_DONTWAIT);
if (!(m_new->m_flags & M_EXT)) {
printf("ax%d: no memory for rx list "
"-- packet dropped!\n", sc->ax_unit);
m_freem(m_new);
return(ENOBUFS);
}
m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
} else {
m_new = m;
m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
m_new->m_data = m_new->m_ext.ext_buf;
}
m_adj(m_new, sizeof(u_int64_t));
c->ax_mbuf = m_new;
c->ax_ptr->ax_status = AX_RXSTAT;
c->ax_ptr->ax_data = vtophys(mtod(m_new, caddr_t));
c->ax_ptr->ax_ctl = MCLBYTES - 1;
return(0);
}
/*
* A frame has been uploaded: pass the resulting mbuf chain up to
* the higher level protocols.
*/
static void ax_rxeof(sc)
struct ax_softc *sc;
{
struct ether_header *eh;
struct mbuf *m;
struct ifnet *ifp;
struct ax_chain_onefrag *cur_rx;
int total_len = 0;
u_int32_t rxstat;
ifp = &sc->arpcom.ac_if;
while(!((rxstat = sc->ax_cdata.ax_rx_head->ax_ptr->ax_status) &
AX_RXSTAT_OWN)) {
struct mbuf *m0 = NULL;
cur_rx = sc->ax_cdata.ax_rx_head;
sc->ax_cdata.ax_rx_head = cur_rx->ax_nextdesc;
m = cur_rx->ax_mbuf;
/*
* If an error occurs, update stats, clear the
* status word and leave the mbuf cluster in place:
* it should simply get re-used next time this descriptor
* comes up in the ring.
*/
if (rxstat & AX_RXSTAT_RXERR) {
ifp->if_ierrors++;
if (rxstat & AX_RXSTAT_COLLSEEN)
ifp->if_collisions++;
ax_newbuf(sc, cur_rx, m);
continue;
}
/* No errors; receive the packet. */
total_len = AX_RXBYTES(cur_rx->ax_ptr->ax_status);
total_len -= ETHER_CRC_LEN;
m0 = m_devget(mtod(m, char *) - ETHER_ALIGN,
total_len + ETHER_ALIGN, 0, ifp, NULL);
ax_newbuf(sc, cur_rx, m);
if (m0 == NULL) {
ifp->if_ierrors++;
continue;
}
m_adj(m0, ETHER_ALIGN);
m = m0;
ifp->if_ipackets++;
eh = mtod(m, struct ether_header *);
/*
* Handle BPF listeners. Let the BPF user see the packet, but
* don't pass it up to the ether_input() layer unless it's
* a broadcast packet, multicast packet, matches our ethernet
* address or the interface is in promiscuous mode.
*/
if (ifp->if_bpf) {
bpf_mtap(ifp, m);
if (ifp->if_flags & IFF_PROMISC &&
(bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr,
ETHER_ADDR_LEN) &&
(eh->ether_dhost[0] & 1) == 0)) {
m_freem(m);
continue;
}
}
/* Remove header from mbuf and pass it on. */
m_adj(m, sizeof(struct ether_header));
ether_input(ifp, eh, m);
}
return;
}
void ax_rxeoc(sc)
struct ax_softc *sc;
{
ax_rxeof(sc);
AX_CLRBIT(sc, AX_NETCFG, AX_NETCFG_RX_ON);
CSR_WRITE_4(sc, AX_RXADDR, vtophys(sc->ax_cdata.ax_rx_head->ax_ptr));
AX_SETBIT(sc, AX_NETCFG, AX_NETCFG_RX_ON);
CSR_WRITE_4(sc, AX_RXSTART, 0xFFFFFFFF);
return;
}
/*
* A frame was downloaded to the chip. It's safe for us to clean up
* the list buffers.
*/
static void ax_txeof(sc)
struct ax_softc *sc;
{
struct ax_chain *cur_tx;
struct ifnet *ifp;
ifp = &sc->arpcom.ac_if;
/* Clear the timeout timer. */
ifp->if_timer = 0;
if (sc->ax_cdata.ax_tx_head == NULL)
return;
/*
* Go through our tx list and free mbufs for those
* frames that have been transmitted.
*/
while(sc->ax_cdata.ax_tx_head->ax_mbuf != NULL) {
u_int32_t txstat;
cur_tx = sc->ax_cdata.ax_tx_head;
txstat = AX_TXSTATUS(cur_tx);
if (txstat & AX_TXSTAT_OWN)
break;
if (txstat & AX_TXSTAT_ERRSUM) {
ifp->if_oerrors++;
if (txstat & AX_TXSTAT_EXCESSCOLL)
ifp->if_collisions++;
if (txstat & AX_TXSTAT_LATECOLL)
ifp->if_collisions++;
}
ifp->if_collisions += (txstat & AX_TXSTAT_COLLCNT) >> 3;
ifp->if_opackets++;
m_freem(cur_tx->ax_mbuf);
cur_tx->ax_mbuf = NULL;
if (sc->ax_cdata.ax_tx_head == sc->ax_cdata.ax_tx_tail) {
sc->ax_cdata.ax_tx_head = NULL;
sc->ax_cdata.ax_tx_tail = NULL;
break;
}
sc->ax_cdata.ax_tx_head = cur_tx->ax_nextdesc;
}
return;
}
/*
* TX 'end of channel' interrupt handler.
*/
static void ax_txeoc(sc)
struct ax_softc *sc;
{
struct ifnet *ifp;
ifp = &sc->arpcom.ac_if;
ifp->if_timer = 0;
if (sc->ax_cdata.ax_tx_head == NULL) {
ifp->if_flags &= ~IFF_OACTIVE;
sc->ax_cdata.ax_tx_tail = NULL;
if (sc->ax_want_auto)
ax_autoneg_mii(sc, AX_FLAG_DELAYTIMEO, 1);
}
return;
}
static void ax_intr(arg)
void *arg;
{
struct ax_softc *sc;
struct ifnet *ifp;
u_int32_t status;
sc = arg;
ifp = &sc->arpcom.ac_if;
/* Supress unwanted interrupts */
if (!(ifp->if_flags & IFF_UP)) {
ax_stop(sc);
return;
}
/* Disable interrupts. */
CSR_WRITE_4(sc, AX_IMR, 0x00000000);
for (;;) {
status = CSR_READ_4(sc, AX_ISR);
if (status)
CSR_WRITE_4(sc, AX_ISR, status);
if ((status & AX_INTRS) == 0)
break;
if ((status & AX_ISR_TX_OK) || (status & AX_ISR_TX_EARLY))
ax_txeof(sc);
if (status & AX_ISR_TX_NOBUF)
ax_txeoc(sc);
if (status & AX_ISR_TX_IDLE) {
ax_txeof(sc);
if (sc->ax_cdata.ax_tx_head != NULL) {
AX_SETBIT(sc, AX_NETCFG, AX_NETCFG_TX_ON);
CSR_WRITE_4(sc, AX_TXSTART, 0xFFFFFFFF);
}
}
if (status & AX_ISR_TX_UNDERRUN) {
u_int32_t cfg;
cfg = CSR_READ_4(sc, AX_NETCFG);
if ((cfg & AX_NETCFG_TX_THRESH) == AX_TXTHRESH_160BYTES)
AX_SETBIT(sc, AX_NETCFG, AX_NETCFG_STORENFWD);
else
CSR_WRITE_4(sc, AX_NETCFG, cfg + 0x4000);
}
if (status & AX_ISR_RX_OK)
ax_rxeof(sc);
if ((status & AX_ISR_RX_WATDOGTIMEO)
|| (status & AX_ISR_RX_NOBUF))
ax_rxeoc(sc);
if (status & AX_ISR_BUS_ERR) {
ax_reset(sc);
ax_init(sc);
}
}
/* Re-enable interrupts. */
CSR_WRITE_4(sc, AX_IMR, AX_INTRS);
if (ifp->if_snd.ifq_head != NULL) {
ax_start(ifp);
}
return;
}
/*
* Encapsulate an mbuf chain in a descriptor by coupling the mbuf data
* pointers to the fragment pointers.
*/
static int ax_encap(sc, c, m_head)
struct ax_softc *sc;
struct ax_chain *c;
struct mbuf *m_head;
{
int frag = 0;
volatile struct ax_desc *f = NULL;
int total_len;
struct mbuf *m;
/*
* Start packing the mbufs in this chain into
* the fragment pointers. Stop when we run out
* of fragments or hit the end of the mbuf chain.
*/
m = m_head;
total_len = 0;
for (m = m_head, frag = 0; m != NULL; m = m->m_next) {
if (m->m_len != 0) {
if (frag == AX_MAXFRAGS)
break;
total_len += m->m_len;
f = &c->ax_ptr->ax_frag[frag];
f->ax_ctl = m->m_len;
if (frag == 0) {
f->ax_status = 0;
f->ax_ctl |= AX_TXCTL_FIRSTFRAG;
} else
f->ax_status = AX_TXSTAT_OWN;
f->ax_next = vtophys(&c->ax_ptr->ax_frag[frag + 1]);
f->ax_data = vtophys(mtod(m, vm_offset_t));
frag++;
}
}
/*
* Handle special case: we ran out of fragments,
* but we have more mbufs left in the chain. Copy the
* data into an mbuf cluster. Note that we don't
* bother clearing the values in the other fragment
* pointers/counters; it wouldn't gain us anything,
* and would waste cycles.
*/
if (m != NULL) {
struct mbuf *m_new = NULL;
MGETHDR(m_new, M_DONTWAIT, MT_DATA);
if (m_new == NULL) {
printf("ax%d: no memory for tx list", sc->ax_unit);
return(1);
}
if (m_head->m_pkthdr.len > MHLEN) {
MCLGET(m_new, M_DONTWAIT);
if (!(m_new->m_flags & M_EXT)) {
m_freem(m_new);
printf("ax%d: no memory for tx list",
sc->ax_unit);
return(1);
}
}
m_copydata(m_head, 0, m_head->m_pkthdr.len,
mtod(m_new, caddr_t));
m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len;
m_freem(m_head);
m_head = m_new;
f = &c->ax_ptr->ax_frag[0];
f->ax_status = 0;
f->ax_data = vtophys(mtod(m_new, caddr_t));
f->ax_ctl = total_len = m_new->m_len;
f->ax_ctl |= AX_TXCTL_FIRSTFRAG;
frag = 1;
}
c->ax_mbuf = m_head;
c->ax_lastdesc = frag - 1;
AX_TXCTL(c) |= AX_TXCTL_LASTFRAG|AX_TXCTL_FINT;
c->ax_ptr->ax_frag[0].ax_ctl |= AX_TXCTL_FINT;
AX_TXNEXT(c) = vtophys(&c->ax_nextdesc->ax_ptr->ax_frag[0]);
return(0);
}
/*
* Main transmit routine. To avoid having to do mbuf copies, we put pointers
* to the mbuf data regions directly in the transmit lists. We also save a
* copy of the pointers since the transmit list fragment pointers are
* physical addresses.
*/
static void ax_start(ifp)
struct ifnet *ifp;
{
struct ax_softc *sc;
struct mbuf *m_head = NULL;
struct ax_chain *cur_tx = NULL, *start_tx;
sc = ifp->if_softc;
if (sc->ax_autoneg) {
sc->ax_tx_pend = 1;
return;
}
/*
* Check for an available queue slot. If there are none,
* punt.
*/
if (sc->ax_cdata.ax_tx_free->ax_mbuf != NULL) {
ifp->if_flags |= IFF_OACTIVE;
return;
}
start_tx = sc->ax_cdata.ax_tx_free;
while(sc->ax_cdata.ax_tx_free->ax_mbuf == NULL) {
IF_DEQUEUE(&ifp->if_snd, m_head);
if (m_head == NULL)
break;
/* Pick a descriptor off the free list. */
cur_tx = sc->ax_cdata.ax_tx_free;
sc->ax_cdata.ax_tx_free = cur_tx->ax_nextdesc;
/* Pack the data into the descriptor. */
ax_encap(sc, cur_tx, m_head);
if (cur_tx != start_tx)
AX_TXOWN(cur_tx) = AX_TXSTAT_OWN;
/*
* If there's a BPF listener, bounce a copy of this frame
* to him.
*/
if (ifp->if_bpf)
bpf_mtap(ifp, cur_tx->ax_mbuf);
AX_TXOWN(cur_tx) = AX_TXSTAT_OWN;
CSR_WRITE_4(sc, AX_TXSTART, 0xFFFFFFFF);
}
sc->ax_cdata.ax_tx_tail = cur_tx;
if (sc->ax_cdata.ax_tx_head == NULL)
sc->ax_cdata.ax_tx_head = start_tx;
/*
* Set a timeout in case the chip goes out to lunch.
*/
ifp->if_timer = 5;
return;
}
static void ax_init(xsc)
void *xsc;
{
struct ax_softc *sc = xsc;
struct ifnet *ifp = &sc->arpcom.ac_if;
u_int16_t phy_bmcr = 0;
int s;
if (sc->ax_autoneg)
return;
s = splimp();
if (sc->ax_pinfo != NULL)
phy_bmcr = ax_phy_readreg(sc, PHY_BMCR);
/*
* Cancel pending I/O and free all RX/TX buffers.
*/
ax_stop(sc);
ax_reset(sc);
/*
* Set cache alignment and burst length.
*/
CSR_WRITE_4(sc, AX_BUSCTL, AX_BUSCTL_CONFIG);
AX_CLRBIT(sc, AX_NETCFG, AX_NETCFG_HEARTBEAT);
AX_CLRBIT(sc, AX_NETCFG, AX_NETCFG_STORENFWD);
if (sc->ax_pinfo != NULL) {
AX_SETBIT(sc, AX_NETCFG, AX_NETCFG_PORTSEL);
ax_setcfg(sc, ax_phy_readreg(sc, PHY_BMCR));
} else
ax_setmode(sc, sc->ifmedia.ifm_media, 0);
AX_CLRBIT(sc, AX_NETCFG, AX_NETCFG_TX_THRESH);
AX_CLRBIT(sc, AX_NETCFG, AX_NETCFG_SPEEDSEL);
if (IFM_SUBTYPE(sc->ifmedia.ifm_media) == IFM_10_T)
AX_SETBIT(sc, AX_NETCFG, AX_TXTHRESH_160BYTES);
else
AX_SETBIT(sc, AX_NETCFG, AX_TXTHRESH_72BYTES);
/* Init our MAC address */
CSR_WRITE_4(sc, AX_FILTIDX, AX_FILTIDX_PAR0);
CSR_WRITE_4(sc, AX_FILTDATA, *(u_int32_t *)(&sc->arpcom.ac_enaddr[0]));
CSR_WRITE_4(sc, AX_FILTIDX, AX_FILTIDX_PAR1);
CSR_WRITE_4(sc, AX_FILTDATA, *(u_int32_t *)(&sc->arpcom.ac_enaddr[4]));
/* Init circular RX list. */
if (ax_list_rx_init(sc) == ENOBUFS) {
printf("ax%d: initialization failed: no "
"memory for rx buffers\n", sc->ax_unit);
ax_stop(sc);
(void)splx(s);
return;
}
/*
* Init tx descriptors.
*/
ax_list_tx_init(sc);
/* If we want promiscuous mode, set the allframes bit. */
if (ifp->if_flags & IFF_PROMISC) {
AX_SETBIT(sc, AX_NETCFG, AX_NETCFG_RX_PROMISC);
} else {
AX_CLRBIT(sc, AX_NETCFG, AX_NETCFG_RX_PROMISC);
}
/*
* Set the capture broadcast bit to capture broadcast frames.
*/
if (ifp->if_flags & IFF_BROADCAST) {
AX_SETBIT(sc, AX_NETCFG, AX_NETCFG_RX_BROAD);
} else {
AX_CLRBIT(sc, AX_NETCFG, AX_NETCFG_RX_BROAD);
}
/*
* Load the multicast filter.
*/
ax_setmulti(sc);
/*
* Load the address of the RX list.
*/
CSR_WRITE_4(sc, AX_RXADDR, vtophys(sc->ax_cdata.ax_rx_head->ax_ptr));
CSR_WRITE_4(sc, AX_TXADDR, vtophys(&sc->ax_ldata->ax_tx_list[0]));
/*
* Enable interrupts.
*/
CSR_WRITE_4(sc, AX_IMR, AX_INTRS);
CSR_WRITE_4(sc, AX_ISR, 0xFFFFFFFF);
/* Enable receiver and transmitter. */
AX_SETBIT(sc, AX_NETCFG, AX_NETCFG_TX_ON|AX_NETCFG_RX_ON);
CSR_WRITE_4(sc, AX_RXSTART, 0xFFFFFFFF);
/* Restore state of BMCR */
if (sc->ax_pinfo != NULL)
ax_phy_writereg(sc, PHY_BMCR, phy_bmcr);
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
(void)splx(s);
return;
}
/*
* Set media options.
*/
static int ax_ifmedia_upd(ifp)
struct ifnet *ifp;
{
struct ax_softc *sc;
struct ifmedia *ifm;
sc = ifp->if_softc;
ifm = &sc->ifmedia;
if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER)
return(EINVAL);
if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO)
ax_autoneg_mii(sc, AX_FLAG_SCHEDDELAY, 1);
else {
if (sc->ax_pinfo == NULL)
ax_setmode(sc, ifm->ifm_media, 1);
else
ax_setmode_mii(sc, ifm->ifm_media);
}
return(0);
}
/*
* Report current media status.
*/
static void ax_ifmedia_sts(ifp, ifmr)
struct ifnet *ifp;
struct ifmediareq *ifmr;
{
struct ax_softc *sc;
u_int16_t advert = 0, ability = 0;
u_int32_t media = 0;
sc = ifp->if_softc;
ifmr->ifm_active = IFM_ETHER;
if (sc->ax_pinfo == NULL) {
media = CSR_READ_4(sc, AX_NETCFG);
if (media & AX_NETCFG_PORTSEL)
ifmr->ifm_active = IFM_ETHER|IFM_100_TX;
else
ifmr->ifm_active = IFM_ETHER|IFM_10_T;
if (media & AX_NETCFG_FULLDUPLEX)
ifmr->ifm_active |= IFM_FDX;
else
ifmr->ifm_active |= IFM_HDX;
return;
}
if (!(ax_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_AUTONEGENBL)) {
if (ax_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_SPEEDSEL)
ifmr->ifm_active = IFM_ETHER|IFM_100_TX;
else
ifmr->ifm_active = IFM_ETHER|IFM_10_T;
if (ax_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_DUPLEX)
ifmr->ifm_active |= IFM_FDX;
else
ifmr->ifm_active |= IFM_HDX;
return;
}
ability = ax_phy_readreg(sc, PHY_LPAR);
advert = ax_phy_readreg(sc, PHY_ANAR);
if (advert & PHY_ANAR_100BT4 &&
ability & PHY_ANAR_100BT4) {
ifmr->ifm_active = IFM_ETHER|IFM_100_T4;
} else if (advert & PHY_ANAR_100BTXFULL &&
ability & PHY_ANAR_100BTXFULL) {
ifmr->ifm_active = IFM_ETHER|IFM_100_TX|IFM_FDX;
} else if (advert & PHY_ANAR_100BTXHALF &&
ability & PHY_ANAR_100BTXHALF) {
ifmr->ifm_active = IFM_ETHER|IFM_100_TX|IFM_HDX;
} else if (advert & PHY_ANAR_10BTFULL &&
ability & PHY_ANAR_10BTFULL) {
ifmr->ifm_active = IFM_ETHER|IFM_10_T|IFM_FDX;
} else if (advert & PHY_ANAR_10BTHALF &&
ability & PHY_ANAR_10BTHALF) {
ifmr->ifm_active = IFM_ETHER|IFM_10_T|IFM_HDX;
}
return;
}
static int ax_ioctl(ifp, command, data)
struct ifnet *ifp;
u_long command;
caddr_t data;
{
struct ax_softc *sc = ifp->if_softc;
struct ifreq *ifr = (struct ifreq *) data;
int s, error = 0;
s = splimp();
switch(command) {
case SIOCSIFADDR:
case SIOCGIFADDR:
case SIOCSIFMTU:
error = ether_ioctl(ifp, command, data);
break;
case SIOCSIFFLAGS:
if (ifp->if_flags & IFF_UP) {
ax_init(sc);
} else {
if (ifp->if_flags & IFF_RUNNING)
ax_stop(sc);
}
error = 0;
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
ax_setmulti(sc);
error = 0;
break;
case SIOCGIFMEDIA:
case SIOCSIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command);
break;
default:
error = EINVAL;
break;
}
(void)splx(s);
return(error);
}
static void ax_watchdog(ifp)
struct ifnet *ifp;
{
struct ax_softc *sc;
sc = ifp->if_softc;
if (sc->ax_autoneg) {
ax_autoneg_mii(sc, AX_FLAG_DELAYTIMEO, 1);
if (!(ifp->if_flags & IFF_UP))
ax_stop(sc);
return;
}
ifp->if_oerrors++;
printf("ax%d: watchdog timeout\n", sc->ax_unit);
if (sc->ax_pinfo != NULL) {
if (!(ax_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT))
printf("ax%d: no carrier - transceiver "
"cable problem?\n", sc->ax_unit);
}
ax_stop(sc);
ax_reset(sc);
ax_init(sc);
if (ifp->if_snd.ifq_head != NULL)
ax_start(ifp);
return;
}
/*
* Stop the adapter and free any mbufs allocated to the
* RX and TX lists.
*/
static void ax_stop(sc)
struct ax_softc *sc;
{
register int i;
struct ifnet *ifp;
ifp = &sc->arpcom.ac_if;
ifp->if_timer = 0;
AX_CLRBIT(sc, AX_NETCFG, (AX_NETCFG_RX_ON|AX_NETCFG_TX_ON));
CSR_WRITE_4(sc, AX_IMR, 0x00000000);
CSR_WRITE_4(sc, AX_TXADDR, 0x00000000);
CSR_WRITE_4(sc, AX_RXADDR, 0x00000000);
/*
* Free data in the RX lists.
*/
for (i = 0; i < AX_RX_LIST_CNT; i++) {
if (sc->ax_cdata.ax_rx_chain[i].ax_mbuf != NULL) {
m_freem(sc->ax_cdata.ax_rx_chain[i].ax_mbuf);
sc->ax_cdata.ax_rx_chain[i].ax_mbuf = NULL;
}
}
bzero((char *)&sc->ax_ldata->ax_rx_list,
sizeof(sc->ax_ldata->ax_rx_list));
/*
* Free the TX list buffers.
*/
for (i = 0; i < AX_TX_LIST_CNT; i++) {
if (sc->ax_cdata.ax_tx_chain[i].ax_mbuf != NULL) {
m_freem(sc->ax_cdata.ax_tx_chain[i].ax_mbuf);
sc->ax_cdata.ax_tx_chain[i].ax_mbuf = NULL;
}
}
bzero((char *)&sc->ax_ldata->ax_tx_list,
sizeof(sc->ax_ldata->ax_tx_list));
ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
return;
}
/*
* Stop all chip I/O so that the kernel's probe routines don't
* get confused by errant DMAs when rebooting.
*/
static void ax_shutdown(dev)
device_t dev;
{
struct ax_softc *sc;
sc = device_get_softc(dev);
ax_stop(sc);
return;
}
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