diff options
Diffstat (limited to 'sys/pci/if_ax.c')
| -rw-r--r-- | sys/pci/if_ax.c | 2233 |
1 files changed, 0 insertions, 2233 deletions
diff --git a/sys/pci/if_ax.c b/sys/pci/if_ax.c deleted file mode 100644 index e380a2b..0000000 --- a/sys/pci/if_ax.c +++ /dev/null @@ -1,2233 +0,0 @@ -/* - * 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; -} |
