Driver for ASIX88140A/88141 Ethernet; from FreeBSD

3 files changed, 2869 insertions, 1 deletions

diff --git a/sys/dev/pci/files.pci b/sys/dev/pci/files.pci
index 4042df6259d..fc41e4379aa 100644
--- a/sys/dev/pci/files.pci
+++ b/sys/dev/pci/files.pci
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.pci,v 1.45 1999/08/13 05:32:29 fgsch Exp $
+#	$OpenBSD: files.pci,v 1.46 1999/08/14 17:29:23 aaron Exp $
 #	$NetBSD: files.pci,v 1.20 1996/09/24 17:47:15 christos Exp $
 #
 # Config file and device description for machine-independent PCI code.
@@ -184,6 +184,11 @@ device	wb: ether, ifnet
 attach	wb at pci
 file	dev/pci/if_wb.c			wb
 
+# ASIX AX88140A ethernet
+device	ax: ether, ifnet
+attach	ax at pci
+file	dev/pci/if_ax.c			ax
+
 # Industrial Computer Source WDT-50x
 device	wdt: pcibus
 attach	wdt at pci
diff --git a/sys/dev/pci/if_ax.c b/sys/dev/pci/if_ax.c
new file mode 100644
index 00000000000..d8651ada73b
--- /dev/null
+++ b/sys/dev/pci/if_ax.c
@@ -0,0 +1,2281 @@
+/*	$OpenBSD: if_ax.c,v 1.1 1999/08/14 17:29:22 aaron Exp $ */
+
+/*
+ * 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.
+ *
+ *      $Id: if_ax.c,v 1.1 1999/08/14 17:29:22 aaron Exp $
+ */
+
+/*
+ * 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 "bpfilter.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/mbuf.h>
+#include <sys/protosw.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/errno.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <sys/socket.h>
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/if_types.h>
+
+#ifdef INET
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/in_var.h>
+#include <netinet/ip.h>
+#include <netinet/if_ether.h>
+#endif
+
+#include <net/if_media.h>
+
+#if NBPFILTER > 0
+#include <net/bpf.h>
+#endif
+
+#include <vm/vm.h>              /* for vtophys */
+#include <vm/pmap.h>            /* for vtophys */
+
+#if defined(__FreeBSD__)
+#include <machine/clock.h>      /* for DELAY */
+#elif defined(__bsdi__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <sys/device.h>
+#endif
+
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcidevs.h>
+
+#define AX_USEIOSPACE
+
+/* #define AX_BACKGROUND_AUTONEG */
+
+#include <dev/pci/if_axreg.h>
+
+#if !defined(lint) && !defined(__OpenBSD__)
+static const char rcsid[] =
+        "$FreeBSD: if_ax.c,v 1.11 1999/07/06 19:23:22 des Exp $";
+#endif
+
+/*
+ * 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((struct device *, void *, void *));
+static void ax_attach	__P((struct device *, struct device *, void *));
+static int ax_intr		__P((void *));
+static void ax_shutdown         __P((void *));
+static int ax_newbuf            __P((struct ax_softc *,
+                                                struct ax_chain_onefrag *));
+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_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 u_int32_t ax_calchash	__P((caddr_t));
+static void ax_autoneg_mii	__P((struct ax_softc *, int, int));
+static void ax_setmode_mii	__P((struct ax_softc *, int));
+static void ax_ifmedia_sts	__P((struct ifnet *, struct ifmediareq *));
+static void ax_getmode_mii	__P((struct ax_softc *));
+static void ax_setcfg		__P((struct ax_softc *, int));
+static void ax_autoneg_xmit	__P((struct ax_softc *));
+static int ax_ifmedia_upd       __P((struct ifnet *));
+static void ax_setmode		__P((struct ax_softc *, int, int));
+
+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_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 *));
+
+#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 };
+#ifdef __FreeBSD__
+        struct ifmultiaddr      *ifma;
+#else
+	struct arpcom *ac = &sc->arpcom;
+	struct ether_multi *enm;
+	struct ether_multistep step;
+#endif
+        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 */
+#ifdef __FreeBSD__
+        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));
+        }
+#else
+	ETHER_FIRST_MULTI(step, ac, enm);
+	while (enm != NULL) {
+		h = ax_calchash(enm->enm_addrlo);
+		if (h < 32)
+			hashes[0] |= (1 << h);
+		else
+			hashes[1] |= (1 << (h - 32));
+		ETHER_NEXT_MULTI(step, enm);
+	}
+#endif
+
+        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);
+
+        /* fallback */
+        sc->ifmedia.ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX;
+
+        if (bmsr & PHY_BMSR_10BTHALF) {
+                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) {
+                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) {
+                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) {
+                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) {
+                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
+                ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0 NULL):
+                sc->ifmedia.ifm_media = IFM_ETHER|IFM_AUTO;
+#endif
+        }
+
+        if (bmsr & PHY_BMSR_CANAUTONEG) {
+                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;
+}
+
+/*
+ * Attach the interface. Allocate softc structures, do ifmedia
+ * setup and ethernet/BPF attach.
+ */
+static void
+ax_attach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+        int                     s, i;
+#ifndef AX_USEIOSPACE
+        vm_offset_t             pbase, vbase;
+#endif
+	const char *intrstr = NULL;
+        u_int32_t               command;
+        struct ax_softc         *sc = (struct ax_softc *)self;
+	struct pci_attach_args	*pa = aux;
+	pci_chipset_tag_t	pc = pa->pa_pc;
+	pci_intr_handle_t	ih;
+        struct ifnet            *ifp;
+        int                     media = IFM_ETHER|IFM_100_TX|IFM_FDX;
+	bus_addr_t iobase;
+	bus_size_t iosize;
+        unsigned int            round;
+        caddr_t                 roundptr;
+        struct ax_type          *p;
+        u_int16_t               phy_vid, phy_did, phy_sts;
+
+#if 0
+        s = splimp();
+#endif
+
+	sc->ax_unit = sc->sc_dev.dv_unit;
+
+        /*
+         * Handle power management nonsense.
+         */
+
+        command = pci_conf_read(pc, pa->pa_tag, AX_PCI_CAPID) & 0x000000FF;
+        if (command == 0x01) {
+
+                command = pci_conf_read(pc, pa->pa_tag, AX_PCI_PWRMGMTCTRL);
+                if (command & AX_PSTATE_MASK) {
+                        u_int32_t               iobase, membase, irq;
+
+                        /* Save important PCI config data. */
+                        iobase = pci_conf_read(pc, pa->pa_tag, AX_PCI_LOIO);
+                        membase = pci_conf_read(pc, pa->pa_tag, AX_PCI_LOMEM);
+                        irq = pci_conf_read(pc, pa->pa_tag, AX_PCI_INTLINE);
+
+                        /* Reset the power state. */
+                        printf("ax%d: chip is in D%d power mode "
+                        "-- setting to D0\n", sc->ax_unit, command &
+				AX_PSTATE_MASK);
+                        command &= 0xFFFFFFFC;
+                        pci_conf_write(pc, pa->pa_tag, AX_PCI_PWRMGMTCTRL, command);
+
+                        /* Restore PCI config data. */
+                        pci_conf_write(pc, pa->pa_tag, AX_PCI_LOIO, iobase);
+                        pci_conf_write(pc, pa->pa_tag, AX_PCI_LOMEM, membase);
+                        pci_conf_write(pc, pa->pa_tag, AX_PCI_INTLINE, irq);
+                }
+        }
+
+        /*
+         * Map control/status registers.
+         */
+        command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
+	command |= PCI_COMMAND_IO_ENABLE |
+		   PCI_COMMAND_MEM_ENABLE |
+		   PCI_COMMAND_MASTER_ENABLE;
+        pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command);
+        command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
+
+#ifdef AX_USEIOSPACE
+	if (!(command & PCI_COMMAND_IO_ENABLE)) {
+		printf("%s: failed to enable i/o ports\n",
+		    sc->sc_dev.dv_xname);
+		return;
+	}
+	/*
+	 * Map control/status registers.
+	 */
+	if (pci_io_find(pc, pa->pa_tag, AX_PCI_LOIO, &iobase, &iosize)) {
+		printf(": can't find i/o space\n");
+		return;
+	}
+	if (bus_space_map(pa->pa_iot, iobase, iosize, 0, &sc->ax_bhandle)) {
+		printf(": can't map i/o space\n");
+		return;
+	}
+	sc->ax_btag = pa->pa_iot;
+#else
+	if (!(command & PCI_COMMAND_MEM_ENABLE)) {
+		printf(": failed to enable memory mapping\n");
+		return;
+	}
+	if (pci_mem_find(pc, pa->pa_tag, AX_PCI_LOMEM, &iobase, &iosize, NULL)){
+		printf(": can't map mem space\n");
+		return;
+	}
+	if (bus_space_map(pa->pa_memt, iobase, iosize, 0, &sc->ax_bhandle)) {
+		printf(": can't map mem space\n");
+		return;
+	}
+	sc->ax_btag = pa->pa_memt;
+#endif
+
+	/*
+	 * Allocate our interrupt.
+	 */
+	if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin,
+	    pa->pa_intrline, &ih)) {
+		printf(": couldn't map interrupt\n");
+		return;
+	}
+
+	intrstr = pci_intr_string(pc, ih);
+	sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ax_intr, sc,
+	    self->dv_xname);
+	if (sc->sc_ih == NULL) {
+		printf(": couldn't establish interrupt\n");
+		if (intrstr != NULL)
+			printf(" at %s", intrstr);
+		return;
+	}
+	printf(": %s", intrstr);
+
+	ax_reset(sc);
+
+        /*
+         * Get station address from the EEPROM.
+         */
+        ax_read_eeprom(sc, (caddr_t)&sc->arpcom.ac_enaddr, AX_EE_NODEADDR,3,0);
+	printf(" address %s\n", ether_sprintf(sc->arpcom.ac_enaddr));
+
+        sc->ax_ldata_ptr = malloc(sizeof(struct ax_list_data) + 8,
+                                M_DEVBUF, M_NOWAIT);
+        if (sc->ax_ldata_ptr == NULL) {
+                free(sc, M_DEVBUF);
+                printf("ax%d: no memory for list buffers!\n", sc->ax_unit);
+                goto fail;
+        }
+
+        sc->ax_ldata = (struct ax_list_data *)sc->ax_ldata_ptr;
+#if __alpha__
+        round = (u_int64_t)sc->ax_ldata_ptr & 0xF;
+#else
+	round = (u_int32_t)sc->ax_ldata_ptr & 0xF;
+#endif
+        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_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_baudrate = 10000000;
+        ifp->if_snd.ifq_maxlen = AX_TX_LIST_CNT - 1;
+	bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ);
+
+        for (i = AX_PHYADDR_MIN; i < AX_PHYADDR_MAX + 1; 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);
+                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];
+        } 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);
+                ax_autoneg_mii(sc, AX_FLAG_FORCEDELAY, 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;
+        ax_stop(sc);
+
+        ifmedia_set(&sc->ifmedia, media);
+
+        /*
+         * Call MI attach routines.
+         */
+        if_attach(ifp);
+        ether_ifattach(ifp);
+
+#if NBPFILTER > 0
+        bpfattach(&sc->arpcom.ac_if.if_bpf, ifp, DLT_EN10MB,
+	          sizeof(struct ether_header));
+#endif
+        shutdownhook_establish(ax_shutdown, sc);
+
+fail:
+        splx(s);
+        return;
+}
+
+/*
+ * 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]) == 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)
+        struct ax_softc         *sc;
+        struct ax_chain_onefrag *c;
+{
+        struct mbuf             *m_new = NULL;
+
+        MGETHDR(m_new, M_DONTWAIT, MT_DATA);
+        if (m_new == NULL) {
+#if defined(__FreeBSD__)
+                printf("ax%d: no memory for rx list -- packet dropped!\n",
+                                                                sc->ax_unit);
+#endif
+                return(ENOBUFS);
+        }
+
+        MCLGET(m_new, M_DONTWAIT);
+        if (!(m_new->m_flags & M_EXT)) {
+#if defined(__FreeBSD__)
+                printf("ax%d: no memory for rx list -- packet dropped!\n",
+                                                                sc->ax_unit);
+#endif
+                m_freem(m_new);
+                return(ENOBUFS);
+        }
+
+        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)) {
+#ifdef __alpha__
+                struct mbuf             *m0 = NULL;
+#endif
+                cur_rx = sc->ax_cdata.ax_rx_head;
+                sc->ax_cdata.ax_rx_head = cur_rx->ax_nextdesc;
+
+                /*
+                 * 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++;
+                        cur_rx->ax_ptr->ax_status = AX_RXSTAT;
+                        cur_rx->ax_ptr->ax_ctl = (MCLBYTES - 1);
+                        continue;
+                }
+
+                /* No errors; receive the packet. */
+                m = cur_rx->ax_mbuf;
+                total_len = AX_RXBYTES(cur_rx->ax_ptr->ax_status);
+
+                total_len -= ETHER_CRC_LEN;
+
+#ifdef __alpha__
+                /*
+                 * Try to conjure up a new mbuf cluster. If that
+                 * fails, it means we have an out of memory condition and
+                 * should leave the buffer in place and continue. This will
+                 * result in a lost packet, but there's little else we
+                 * can do in this situation.
+                 */
+                if (ax_newbuf(sc, cur_rx) == ENOBUFS) {
+                        ifp->if_ierrors++;
+                        cur_rx->ax_ptr->ax_status = AX_RXSTAT;
+                        cur_rx->ax_ptr->ax_ctl = (MCLBYTES - 1);
+                        continue;
+                }
+
+                /*
+                 * Sadly, the ASIX chip doesn't decode the last few
+                 * bits of the RX DMA buffer address, so we have to
+                 * cheat in order to obtain proper payload alignment
+                 * on the alpha.
+                 */
+                MGETHDR(m0, M_DONTWAIT, MT_DATA);
+                if (m0 == NULL) {
+                        ifp->if_ierrors++;
+                        cur_rx->ax_ptr->ax_status = AX_RXSTAT;
+                        cur_rx->ax_ptr->ax_ctl = (MCLBYTES - 1);
+                        continue;
+                }
+
+                m0->m_data += 2;
+                if (total_len <= (MHLEN - 2)) {
+                        bcopy(mtod(m, caddr_t), mtod(m0, caddr_t), total_len);
+                        m_freem(m);
+                        m = m0;
+                        m->m_pkthdr.len = m->m_len = total_len;
+                } else {
+                        bcopy(mtod(m, caddr_t), mtod(m0, caddr_t), (MHLEN - 2))
+;
+                        m->m_len = total_len - (MHLEN - 2);
+                        m->m_data += (MHLEN - 2);
+                        m0->m_next = m;
+                        m0->m_len = (MHLEN - 2);
+                        m = m0;
+                        m->m_pkthdr.len = total_len;
+                }
+                m->m_pkthdr.rcvif = ifp;
+#else
+                if (total_len < MINCLSIZE) {
+                        m = m_devget(mtod(cur_rx->ax_mbuf, char *),
+                                total_len, 0, ifp, NULL);
+                        cur_rx->ax_ptr->ax_status = AX_RXSTAT;
+                        cur_rx->ax_ptr->ax_ctl = (MCLBYTES - 1);
+                        if (m == NULL) {
+                                ifp->if_ierrors++;
+                                continue;
+                        }
+                } else {
+                        m = cur_rx->ax_mbuf;
+                /*
+                 * Try to conjure up a new mbuf cluster. If that
+                 * fails, it means we have an out of memory condition and
+                 * should leave the buffer in place and continue. This will
+                 * result in a lost packet, but there's little else we
+                 * can do in this situation.
+                 */
+                        if (ax_newbuf(sc, cur_rx) == ENOBUFS) {
+                                ifp->if_ierrors++;
+                                cur_rx->ax_ptr->ax_status = AX_RXSTAT;
+                                cur_rx->ax_ptr->ax_ctl = (MCLBYTES - 1);
+                                continue;
+                        }
+                        m->m_pkthdr.rcvif = ifp;
+                        m->m_pkthdr.len = m->m_len = total_len;
+                }
+#endif
+
+                ifp->if_ipackets++;
+                eh = mtod(m, struct ether_header *);
+#if NBPFILTER > 0
+                /*
+                 * 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) {
+			m->m_pkthdr.len = m->m_len = total_len;
+#ifdef __FreeBSD__
+                        bpf_mtap(ifp, m);
+#else
+			bpf_mtap(ifp->if_bpf, m);
+#endif
+                }
+#endif
+                /* Remove header from mbuf and pass it on. */
+		m->m_pkthdr.len = m->m_len =
+				total_len - sizeof(struct ether_header);
+		m->m_data += 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;
+}
+
+#ifdef __OpenBSD__
+static int ax_intr(arg)
+	void			*arg;
+#else
+static void ax_intr(arg)
+        void                    *arg;
+#endif
+{
+        struct ax_softc         *sc;
+        struct ifnet            *ifp;
+        u_int32_t               status;
+#ifdef __OpenBSD__
+	int claimed = 0;
+#endif
+
+        sc = arg;
+        ifp = &sc->arpcom.ac_if;
+
+        /* Supress unwanted interrupts */
+        if (!(ifp->if_flags & IFF_UP)) {
+                ax_stop(sc);
+                return (claimed);
+        }
+
+        /* 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;
+
+#ifdef __OpenBSD__
+		claimed = 1;
+#endif
+
+                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);
+        }
+
+#ifdef __OpenBSD__
+	return claimed;
+#else
+        return;
+#endif
+}
+
+/*
+ * 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) {
+#if defined(__FreeBSD__)
+                        printf("ax%d: no memory for tx list", sc->ax_unit);
+#endif
+                        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);
+#if defined(__FreeBSD__)
+                                printf("ax%d: no memory for tx list",
+                                                sc->ax_unit);
+#endif
+                                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 NBPFILTER > 0
+                /*
+                 * If there's a BPF listener, bounce a copy of this frame
+                 * to him.
+                 */
+                if (ifp->if_bpf)
+#ifdef __FreeBSD__
+                        bpf_mtap(ifp, cur_tx->ax_mbuf);
+#else
+			bpf_mtap(ifp->if_bpf, cur_tx->ax_mbuf);
+#endif
+
+#endif
+                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;
+	struct ifaddr *ifa = (struct ifaddr *)data;
+        int                     s, error = 0;
+
+        s = splimp();
+
+#ifdef __OpenBSD__
+	if ((error = ether_ioctl(ifp, &sc->arpcom, command, data)) > 0) {
+		splx(s);
+		return error;
+	}
+#endif
+
+        switch(command) {
+#ifdef __FreeBSD__
+        case SIOCSIFADDR:
+        case SIOCGIFADDR:
+        case SIOCSIFMTU:
+                error = ether_ioctl(ifp, command, data);
+                break;
+#else
+	case SIOCSIFADDR:
+		ifp->if_flags |= IFF_UP;
+		switch (ifa->ifa_addr->sa_family) {
+#ifdef INET
+		case AF_INET:
+			ax_init(sc);
+			arp_ifinit(&sc->arpcom, ifa);
+			break;
+#endif /* INET */
+		default:
+			ax_init(sc);
+			break;
+		}
+		break;
+#endif
+        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);
+                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;
+}
+
+static int
+ax_probe(parent, match, aux)
+	struct device *parent;
+	void *match;
+	void *aux;
+{
+	struct pci_attach_args *pa = (struct pci_attach_args *) aux;
+
+	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_ASIX)
+		return (0);
+
+	switch (PCI_PRODUCT(pa->pa_id)) {
+		case PCI_PRODUCT_ASIX_AX88140A:
+			return (1);
+	}
+
+	return (0);
+}
+
+static void
+ax_shutdown(v)
+	void *v;
+{
+	struct ax_softc *sc = (struct ax_softc *)v;
+
+	ax_stop(sc);
+}
+
+struct cfattach ax_ca = {
+	sizeof(struct ax_softc), ax_probe, ax_attach
+};
+
+struct cfdriver ax_cd = {
+	0, "ax", DV_IFNET
+};
+
diff --git a/sys/dev/pci/if_axreg.h b/sys/dev/pci/if_axreg.h
new file mode 100644
index 00000000000..05ca3376c5b
--- /dev/null
+++ b/sys/dev/pci/if_axreg.h
@@ -0,0 +1,582 @@
+/*	$OpenBSD: if_axreg.h,v 1.1 1999/08/14 17:29:22 aaron Exp $ */
+
+/*
+ * 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.
+ *
+ *	$Id: if_axreg.h,v 1.1 1999/08/14 17:29:22 aaron Exp $
+ */
+
+/*
+ * ASIX register definitions.
+ */
+
+#define AX_BUSCTL		0x00	/* bus control */
+#define AX_TXSTART		0x08	/* tx start demand */
+#define AX_RXSTART		0x10	/* rx start demand */
+#define AX_RXADDR		0x18	/* rx descriptor list start addr */
+#define AX_TXADDR		0x20	/* tx descriptor list start addr */
+#define AX_ISR			0x28	/* interrupt status register */
+#define AX_NETCFG		0x30	/* network config register */
+#define AX_IMR			0x38	/* interrupt mask */
+#define AX_FRAMESDISCARDED	0x40	/* # of discarded frames */
+#define AX_SIO			0x48	/* MII and ROM/EEPROM access */
+#define AX_RESERVED		0x50
+#define AX_GENTIMER		0x58	/* general timer */
+#define AX_GENPORT		0x60	/* general purpose port */
+#define AX_FILTIDX		0x68	/* RX filter index */
+#define AX_FILTDATA		0x70	/* RX filter data */
+
+/*
+ * Bus control bits.
+ */
+#define AX_BUSCTL_RESET		0x00000001
+#define AX_BUSCTL_ARBITRATION	0x00000002
+#define AX_BUSCTL_BIGENDIAN	0x00000080
+#define AX_BUSCTL_BURSTLEN	0x00003F00
+#define AX_BUSCTL_BUF_BIGENDIAN	0x00100000
+#define AX_BISCTL_READMULTI	0x00200000
+
+#define AX_BURSTLEN_UNLIMIT	0x00000000
+#define AX_BURSTLEN_1LONG	0x00000100
+#define AX_BURSTLEN_2LONG	0x00000200
+#define AX_BURSTLEN_4LONG	0x00000400
+#define AX_BURSTLEN_8LONG	0x00000800
+#define AX_BURSTLEN_16LONG	0x00001000
+#define AX_BURSTLEN_32LONG	0x00002000
+
+#define AX_BUSCTL_CONFIG	(AX_BUSCTL_ARBITRATION|AX_BURSTLEN_8LONG|AX_BURSTLEN_8LONG)
+
+/*
+ * Interrupt status bits.
+ */
+#define AX_ISR_TX_OK		0x00000001
+#define AX_ISR_TX_IDLE		0x00000002
+#define AX_ISR_TX_NOBUF		0x00000004
+#define AX_ISR_TX_JABBERTIMEO	0x00000008
+#define AX_ISR_TX_UNDERRUN	0x00000020
+#define AX_ISR_RX_OK		0x00000040
+#define AX_ISR_RX_NOBUF		0x00000080
+#define AX_ISR_RX_IDLE		0x00000100
+#define AX_ISR_RX_WATDOGTIMEO	0x00000200
+#define AX_ISR_TX_EARLY		0x00000400
+#define AX_ISR_TIMER_EXPIRED	0x00000800
+#define AX_ISR_BUS_ERR		0x00002000
+#define AX_ISR_ABNORMAL		0x00008000
+#define AX_ISR_NORMAL		0x00010000
+#define AX_ISR_RX_STATE		0x000E0000
+#define AX_ISR_TX_STATE		0x00700000
+#define AX_ISR_BUSERRTYPE	0x03800000
+
+#define AX_RXSTATE_STOPPED	0x00000000	/* 000 - Stopped */
+#define AX_RXSTATE_FETCH	0x00020000	/* 001 - Fetching descriptor */
+#define AX_RXSTATE_ENDCHECK	0x00040000	/* 010 - check for rx end */
+#define AX_RXSTATE_WAIT		0x00060000	/* 011 - waiting for packet */
+#define AX_RXSTATE_SUSPEND	0x00080000	/* 100 - suspend rx */
+#define AX_RXSTATE_CLOSE	0x000A0000	/* 101 - close tx desc */
+#define AX_RXSTATE_FLUSH	0x000C0000	/* 110 - flush from FIFO */
+#define AX_RXSTATE_DEQUEUE	0x000E0000	/* 111 - dequeue from FIFO */
+
+#define AX_TXSTATE_RESET	0x00000000	/* 000 - reset */
+#define AX_TXSTATE_FETCH	0x00100000	/* 001 - fetching descriptor */
+#define AX_TXSTATE_WAITEND	0x00200000	/* 010 - wait for tx end */
+#define AX_TXSTATE_READING	0x00300000	/* 011 - read and enqueue */
+#define AX_TXSTATE_RSVD		0x00400000	/* 100 - reserved */
+#define AX_TXSTATE_SETUP	0x00500000	/* 101 - setup packet */
+#define AX_TXSTATE_SUSPEND	0x00600000	/* 110 - suspend tx */
+#define AX_TXSTATE_CLOSE	0x00700000	/* 111 - close tx desc */
+
+/*
+ * Network config bits.
+ */
+#define AX_NETCFG_LINKSTAT_PCS	0x00000001
+#define AX_NETCFG_RX_ON		0x00000002
+#define AX_NETCFG_RX_BADFRAMES	0x00000008
+#define AX_NETCFG_RX_PROMISC	0x00000040
+#define AX_NETCFG_RX_ALLMULTI	0x00000080
+#define AX_NETCFG_RX_BROAD	0x00000100
+#define AX_NETCFG_FULLDUPLEX	0x00000200
+#define AX_NETCFG_LOOPBACK	0x00000C00
+#define AX_NETCFG_FORCECOLL	0x00001000
+#define AX_NETCFG_TX_ON		0x00002000
+#define AX_NETCFG_TX_THRESH	0x0000C000
+#define AX_NETCFG_PORTSEL	0x00040000	/* 0 == SRL, 1 == MII/SYM */
+#define AX_NETCFG_HEARTBEAT	0x00080000	/* 0 == ON, 1 == OFF */
+#define AX_NETCFG_STORENFWD	0x00200000
+#define AX_NETCFG_SPEEDSEL	0x00400000	/* 1 == 10, 0 == 100 */
+#define AX_NETCFG_PCS		0x00800000
+#define AX_NETCFG_SCRAMBLER	0x01000000
+#define AX_NETCFG_RX_ALL	0x40000000
+
+#define AX_OPMODE_NORM		0x00000000
+#define AX_OPMODE_INTLOOP	0x00000400
+#define AX_OPMODE_EXTLOOP	0x00000800
+
+#define AX_TXTHRESH_72BYTES	0x00000000
+#define AX_TXTHRESH_96BYTES	0x00004000
+#define AX_TXTHRESH_128BYTES	0x00008000
+#define AX_TXTHRESH_160BYTES	0x0000C000
+
+/*
+ * Interrupt mask bits.
+ */
+#define AX_IMR_TX_OK		0x00000001
+#define AX_IMR_TX_IDLE		0x00000002
+#define AX_IMR_TX_NOBUF		0x00000004
+#define AX_IMR_TX_JABBERTIMEO	0x00000008
+#define AX_IMR_TX_UNDERRUN	0x00000020
+#define AX_IMR_RX_OK		0x00000040
+#define AX_IMR_RX_NOBUF		0x00000080
+#define AX_IMR_RX_IDLE		0x00000100
+#define AX_IMR_RX_WATDOGTIMEO	0x00000200
+#define AX_IMR_TX_EARLY		0x00000400
+#define AX_IMR_TIMER_EXPIRED	0x00000800
+#define AX_IMR_BUS_ERR		0x00002000
+#define AX_IMR_RX_EARLY		0x00004000
+#define AX_IMR_ABNORMAL		0x00008000
+#define AX_IMR_NORMAL		0x00010000
+
+#define AX_INTRS	\
+	(AX_IMR_RX_OK|AX_IMR_TX_OK|AX_IMR_RX_NOBUF|AX_IMR_RX_WATDOGTIMEO|\
+	AX_IMR_TX_NOBUF|AX_IMR_TX_UNDERRUN|AX_IMR_BUS_ERR|		\
+	AX_IMR_ABNORMAL|AX_IMR_NORMAL|/*AX_IMR_TX_EARLY*/		\
+	AX_IMR_TX_IDLE|AX_IMR_RX_IDLE)
+
+/*
+ * Serial I/O (EEPROM/ROM) bits.
+ */
+#define AX_SIO_EE_CS		0x00000001	/* EEPROM chip select */
+#define AX_SIO_EE_CLK		0x00000002	/* EEPROM clock */
+#define AX_SIO_EE_DATAIN	0x00000004	/* EEPROM data output */
+#define AX_SIO_EE_DATAOUT	0x00000008	/* EEPROM data input */
+#define AX_SIO_EESEL		0x00000800
+#define AX_SIO_ROMSEL		0x00001000
+#define AX_SIO_ROMCTL_WRITE	0x00002000
+#define AX_SIO_ROMCTL_READ	0x00004000
+#define AX_SIO_MII_CLK		0x00010000	/* MDIO clock */
+#define AX_SIO_MII_DATAOUT	0x00020000	/* MDIO data out */
+#define AX_SIO_MII_DIR		0x00040000	/* MDIO dir */
+#define AX_SIO_MII_DATAIN	0x00080000	/* MDIO data in */
+
+#define AX_EECMD_WRITE		0x140
+#define AX_EECMD_READ		0x180
+#define AX_EECMD_ERASE		0x1c0
+
+#define AX_EE_NODEADDR_OFFSET	0x70
+#define AX_EE_NODEADDR		10
+
+/*
+ * General purpose timer register
+ */
+#define AX_TIMER_VALUE		0x0000FFFF
+#define AX_TIMER_CONTINUOUS	0x00010000
+
+/*
+ * RX Filter Index Register values
+ */
+#define AX_FILTIDX_PAR0		0x00000000
+#define AX_FILTIDX_PAR1		0x00000001
+#define AX_FILTIDX_MAR0		0x00000002
+#define AX_FILTIDX_MAR1		0x00000003
+
+/*
+ * ASIX TX/RX list structure.
+ */
+
+struct ax_desc {
+	volatile u_int32_t	ax_status;
+	volatile u_int32_t	ax_ctl;
+	volatile u_int32_t	ax_ptr1;
+	volatile u_int32_t	ax_ptr2;
+};
+
+#define ax_data		ax_ptr1
+#define ax_next		ax_ptr2
+
+#define AX_RXSTAT_FIFOOFLOW	0x00000001
+#define AX_RXSTAT_CRCERR	0x00000002
+#define AX_RXSTAT_DRIBBLE	0x00000004
+#define AX_RXSTAT_WATCHDOG	0x00000010
+#define AX_RXSTAT_FRAMETYPE	0x00000020	/* 0 == IEEE 802.3 */
+#define AX_RXSTAT_COLLSEEN	0x00000040
+#define AX_RXSTAT_GIANT		0x00000080
+#define AX_RXSTAT_LASTFRAG	0x00000100
+#define AX_RXSTAT_FIRSTFRAG	0x00000200
+#define AX_RXSTAT_MULTICAST	0x00000400
+#define AX_RXSTAT_RUNT		0x00000800
+#define AX_RXSTAT_RXTYPE	0x00003000
+#define AX_RXSTAT_RXERR		0x00008000
+#define AX_RXSTAT_RXLEN		0x3FFF0000
+#define AX_RXSTAT_OWN		0x80000000
+
+#define AX_RXBYTES(x)		((x & AX_RXSTAT_RXLEN) >> 16)
+#define AX_RXSTAT (AX_RXSTAT_FIRSTFRAG|AX_RXSTAT_LASTFRAG|AX_RXSTAT_OWN)
+
+#define AX_RXCTL_BUFLEN1	0x00000FFF
+#define AX_RXCTL_BUFLEN2	0x00FFF000
+#define AX_RXCTL_RLAST		0x02000000
+
+#define AX_TXSTAT_DEFER		0x00000001
+#define AX_TXSTAT_UNDERRUN	0x00000002
+#define AX_TXSTAT_LINKFAIL	0x00000003
+#define AX_TXSTAT_COLLCNT	0x00000078
+#define AX_TXSTAT_SQE		0x00000080
+#define AX_TXSTAT_EXCESSCOLL	0x00000100
+#define AX_TXSTAT_LATECOLL	0x00000200
+#define AX_TXSTAT_NOCARRIER	0x00000400
+#define AX_TXSTAT_CARRLOST	0x00000800
+#define AX_TXSTAT_JABTIMEO	0x00004000
+#define AX_TXSTAT_ERRSUM	0x00008000
+#define AX_TXSTAT_OWN		0x80000000
+
+#define AX_TXCTL_BUFLEN1	0x000007FF
+#define AX_TXCTL_BUFLEN2	0x003FF800
+#define AX_TXCTL_PAD		0x00800000
+#define AX_TXCTL_TLAST		0x02000000
+#define AX_TXCTL_NOCRC		0x04000000
+#define AX_TXCTL_FIRSTFRAG	0x20000000
+#define AX_TXCTL_LASTFRAG	0x40000000
+#define AX_TXCTL_FINT		0x80000000
+
+#define AX_MAXFRAGS		16
+#define AX_RX_LIST_CNT		64
+#define AX_TX_LIST_CNT		64
+#define AX_MIN_FRAMELEN		60
+
+/*
+ * A tx 'super descriptor' is actually 16 regular descriptors
+ * back to back.
+ */
+struct ax_txdesc {
+	volatile struct ax_desc	ax_frag[AX_MAXFRAGS];
+};
+
+#define AX_TXNEXT(x)	x->ax_ptr->ax_frag[x->ax_lastdesc].ax_next
+#define AX_TXSTATUS(x)	x->ax_ptr->ax_frag[x->ax_lastdesc].ax_status
+#define AX_TXCTL(x)	x->ax_ptr->ax_frag[x->ax_lastdesc].ax_ctl
+#define AX_TXDATA(x)	x->ax_ptr->ax_frag[x->ax_lastdesc].ax_data
+
+#define AX_TXOWN(x)	x->ax_ptr->ax_frag[0].ax_status
+
+#define AX_UNSENT	0x12341234
+
+struct ax_list_data {
+	volatile struct ax_desc		ax_rx_list[AX_RX_LIST_CNT];
+	volatile struct ax_txdesc	ax_tx_list[AX_TX_LIST_CNT];
+};
+
+struct ax_chain {
+	volatile struct ax_txdesc	*ax_ptr;
+	struct mbuf			*ax_mbuf;
+	struct ax_chain			*ax_nextdesc;
+	u_int8_t			ax_lastdesc;
+};
+
+struct ax_chain_onefrag {
+	volatile struct ax_desc	*ax_ptr;
+	struct mbuf		*ax_mbuf;
+	struct ax_chain_onefrag	*ax_nextdesc;
+};
+
+struct ax_chain_data {
+	struct ax_chain_onefrag	ax_rx_chain[AX_RX_LIST_CNT];
+	struct ax_chain		ax_tx_chain[AX_TX_LIST_CNT];
+
+	struct ax_chain_onefrag	*ax_rx_head;
+
+	struct ax_chain		*ax_tx_head;
+	struct ax_chain		*ax_tx_tail;
+	struct ax_chain		*ax_tx_free;
+};
+
+struct ax_type {
+	u_int16_t		ax_vid;
+	u_int16_t		ax_did;
+	char			*ax_name;
+};
+
+struct ax_mii_frame {
+	u_int8_t		mii_stdelim;
+	u_int8_t		mii_opcode;
+	u_int8_t		mii_phyaddr;
+	u_int8_t		mii_regaddr;
+	u_int8_t		mii_turnaround;
+	u_int16_t		mii_data;
+};
+
+/*
+ * MII constants
+ */
+#define AX_MII_STARTDELIM	0x01
+#define AX_MII_READOP		0x02
+#define AX_MII_WRITEOP		0x01
+#define AX_MII_TURNAROUND	0x02
+
+#define AX_FLAG_FORCEDELAY	1
+#define AX_FLAG_SCHEDDELAY	2
+#define AX_FLAG_DELAYTIMEO	3	
+
+struct ax_softc {
+#ifdef __OpenBSD__
+	struct device		sc_dev;		/* generic device structure */
+	void *			sc_ih;		/* interrupt handler cookie */
+#endif
+	struct arpcom		arpcom;		/* interface info */
+	struct ifmedia		ifmedia;	/* media info */
+	bus_space_handle_t	ax_bhandle;	/* bus space handle */
+	bus_space_tag_t		ax_btag;	/* bus space tag */
+	struct ax_type		*ax_info;	/* ASIX adapter info */
+	struct ax_type		*ax_pinfo;	/* phy info */
+	u_int8_t		ax_hasmii;	/* whether we have mii or not */
+	u_int8_t		ax_unit;	/* interface number */
+	u_int8_t		ax_type;
+	u_int8_t		ax_phy_addr;	/* PHY address */
+	u_int8_t		ax_tx_pend;	/* TX pending */
+	u_int8_t		ax_want_auto;
+	u_int8_t		ax_autoneg;
+	caddr_t			ax_ldata_ptr;
+	struct ax_list_data	*ax_ldata;
+	struct ax_chain_data	ax_cdata;
+};
+
+/*
+ * register space access macros
+ */
+#define CSR_WRITE_4(sc, reg, val)	\
+	bus_space_write_4(sc->ax_btag, sc->ax_bhandle, reg, val)
+#define CSR_WRITE_2(sc, reg, val)	\
+	bus_space_write_2(sc->ax_btag, sc->ax_bbhandle, reg, val)
+#define CSR_WRITE_1(sc, reg, val)	\
+	bus_space_write_1(sc->ax_btag, sc->ax_bhandle, reg, val)
+
+#define CSR_READ_4(sc, reg)		\
+	bus_space_read_4(sc->ax_btag, sc->ax_bhandle, reg)
+#define CSR_READ_2(sc, reg)		\
+	bus_space_read_2(sc->ax_btag, sc->ax_bhandle, reg)
+#define CSR_READ_1(sc, reg)		\
+	bus_space_read_1(sc->ax_btag, sc->ax_bhandle, reg)
+
+#define AX_TIMEOUT		1000
+
+/*
+ * General constants that are fun to know.
+ *
+ * ASIX PCI vendor ID
+ */
+#define	AX_VENDORID		0x125B
+
+/*
+ * ASIX device IDs.
+ */
+#define AX_DEVICEID_AX88140A	0x1400
+
+/*
+ * The ASIX AX88140 and ASIX AX88141 have the same vendor and
+ * device IDs but different revision values.
+ */
+#define AX_REVISION_88140	0x00
+#define AX_REVISION_88141	0x10
+
+/*
+ * Texas Instruments PHY identifiers
+ */
+#define TI_PHY_VENDORID		0x4000
+#define TI_PHY_10BT		0x501F
+#define TI_PHY_100VGPMI		0x502F
+
+/*
+ * These ID values are for the NS DP83840A 10/100 PHY
+ */
+#define NS_PHY_VENDORID		0x2000
+#define NS_PHY_83840A		0x5C0F
+
+/*
+ * Level 1 10/100 PHY
+ */
+#define LEVEL1_PHY_VENDORID	0x7810
+#define LEVEL1_PHY_LXT970	0x000F
+
+/*
+ * Intel 82555 10/100 PHY
+ */
+#define INTEL_PHY_VENDORID	0x0A28
+#define INTEL_PHY_82555		0x015F
+
+/*
+ * SEEQ 80220 10/100 PHY
+ */
+#define SEEQ_PHY_VENDORID	0x0016
+#define SEEQ_PHY_80220		0xF83F
+
+
+/*
+ * PCI low memory base and low I/O base register, and
+ * other PCI registers.
+ */
+
+#define AX_PCI_VENDOR_ID	0x00
+#define AX_PCI_DEVICE_ID	0x02
+#define AX_PCI_COMMAND		0x04
+#define AX_PCI_STATUS		0x06
+#define AX_PCI_REVID		0x08
+#define AX_PCI_CLASSCODE	0x09
+#define AX_PCI_LATENCY_TIMER	0x0D
+#define AX_PCI_HEADER_TYPE	0x0E
+#define AX_PCI_LOIO		0x10
+#define AX_PCI_LOMEM		0x14
+#define AX_PCI_BIOSROM		0x30
+#define AX_PCI_INTLINE		0x3C
+#define AX_PCI_INTPIN		0x3D
+#define AX_PCI_MINGNT		0x3E
+#define AX_PCI_MINLAT		0x0F
+#define AX_PCI_RESETOPT		0x48
+#define AX_PCI_EEPROM_DATA	0x4C
+
+/* power management registers */
+#define AX_PCI_CAPID		0x44 /* 8 bits */
+#define AX_PCI_NEXTPTR		0x45 /* 8 bits */
+#define AX_PCI_PWRMGMTCAP	0x46 /* 16 bits */
+#define AX_PCI_PWRMGMTCTRL	0x48 /* 16 bits */
+
+#define AX_PSTATE_MASK		0x0003
+#define AX_PSTATE_D0		0x0000
+#define AX_PSTATE_D1		0x0001
+#define AX_PSTATE_D2		0x0002
+#define AX_PSTATE_D3		0x0003
+#define AX_PME_EN		0x0010
+#define AX_PME_STATUS		0x8000
+
+#define PHY_UNKNOWN		6
+
+#define AX_PHYADDR_MIN		0x00
+#define AX_PHYADDR_MAX		0x1F
+
+#define PHY_BMCR		0x00
+#define PHY_BMSR		0x01
+#define PHY_VENID		0x02
+#define PHY_DEVID		0x03
+#define PHY_ANAR		0x04
+#define PHY_LPAR		0x05
+#define PHY_ANEXP		0x06
+
+#define PHY_ANAR_NEXTPAGE	0x8000
+#define PHY_ANAR_RSVD0		0x4000
+#define PHY_ANAR_TLRFLT		0x2000
+#define PHY_ANAR_RSVD1		0x1000
+#define PHY_ANAR_RSVD2		0x0800
+#define PHY_ANAR_RSVD3		0x0400
+#define PHY_ANAR_100BT4		0x0200
+#define PHY_ANAR_100BTXFULL	0x0100
+#define PHY_ANAR_100BTXHALF	0x0080
+#define PHY_ANAR_10BTFULL	0x0040
+#define PHY_ANAR_10BTHALF	0x0020
+#define PHY_ANAR_PROTO4		0x0010
+#define PHY_ANAR_PROTO3		0x0008
+#define PHY_ANAR_PROTO2		0x0004
+#define PHY_ANAR_PROTO1		0x0002
+#define PHY_ANAR_PROTO0		0x0001
+
+/*
+ * These are the register definitions for the PHY (physical layer
+ * interface chip).
+ */
+/*
+ * PHY BMCR Basic Mode Control Register
+ */
+#define PHY_BMCR_RESET			0x8000
+#define PHY_BMCR_LOOPBK			0x4000
+#define PHY_BMCR_SPEEDSEL		0x2000
+#define PHY_BMCR_AUTONEGENBL		0x1000
+#define PHY_BMCR_RSVD0			0x0800	/* write as zero */
+#define PHY_BMCR_ISOLATE		0x0400
+#define PHY_BMCR_AUTONEGRSTR		0x0200
+#define PHY_BMCR_DUPLEX			0x0100
+#define PHY_BMCR_COLLTEST		0x0080
+#define PHY_BMCR_RSVD1			0x0040	/* write as zero, don't care */
+#define PHY_BMCR_RSVD2			0x0020	/* write as zero, don't care */
+#define PHY_BMCR_RSVD3			0x0010	/* write as zero, don't care */
+#define PHY_BMCR_RSVD4			0x0008	/* write as zero, don't care */
+#define PHY_BMCR_RSVD5			0x0004	/* write as zero, don't care */
+#define PHY_BMCR_RSVD6			0x0002	/* write as zero, don't care */
+#define PHY_BMCR_RSVD7			0x0001	/* write as zero, don't care */
+/*
+ * RESET: 1 == software reset, 0 == normal operation
+ * Resets status and control registers to default values.
+ * Relatches all hardware config values.
+ *
+ * LOOPBK: 1 == loopback operation enabled, 0 == normal operation
+ *
+ * SPEEDSEL: 1 == 100Mb/s, 0 == 10Mb/s
+ * Link speed is selected byt his bit or if auto-negotiation if bit
+ * 12 (AUTONEGENBL) is set (in which case the value of this register
+ * is ignored).
+ *
+ * AUTONEGENBL: 1 == Autonegotiation enabled, 0 == Autonegotiation disabled
+ * Bits 8 and 13 are ignored when autoneg is set, otherwise bits 8 and 13
+ * determine speed and mode. Should be cleared and then set if PHY configured
+ * for no autoneg on startup.
+ *
+ * ISOLATE: 1 == isolate PHY from MII, 0 == normal operation
+ *
+ * AUTONEGRSTR: 1 == restart autonegotiation, 0 = normal operation
+ *
+ * DUPLEX: 1 == full duplex mode, 0 == half duplex mode
+ *
+ * COLLTEST: 1 == collision test enabled, 0 == normal operation
+ */
+
+/* 
+ * PHY, BMSR Basic Mode Status Register 
+ */   
+#define PHY_BMSR_100BT4			0x8000
+#define PHY_BMSR_100BTXFULL		0x4000
+#define PHY_BMSR_100BTXHALF		0x2000
+#define PHY_BMSR_10BTFULL		0x1000
+#define PHY_BMSR_10BTHALF		0x0800
+#define PHY_BMSR_RSVD1			0x0400	/* write as zero, don't care */
+#define PHY_BMSR_RSVD2			0x0200	/* write as zero, don't care */
+#define PHY_BMSR_RSVD3			0x0100	/* write as zero, don't care */
+#define PHY_BMSR_RSVD4			0x0080	/* write as zero, don't care */
+#define PHY_BMSR_MFPRESUP		0x0040
+#define PHY_BMSR_AUTONEGCOMP		0x0020
+#define PHY_BMSR_REMFAULT		0x0010
+#define PHY_BMSR_CANAUTONEG		0x0008
+#define PHY_BMSR_LINKSTAT		0x0004
+#define PHY_BMSR_JABBER			0x0002
+#define PHY_BMSR_EXTENDED		0x0001
+
+#ifdef __alpha__
+#undef vtophys
+#define vtophys(va)		alpha_XXX_dmamap((vm_offset_t)va)
+#endif
+
+#ifndef ETHER_CRC_LEN
+#define ETHER_CRC_LEN	4
+#endif