An early Christmas present: add driver support for a whole bunch of

PCI fast ethernet adapters, plus man pages.

if_pn.c: Netgear FA310TX model D1, LinkSys LNE100TX, Matrox FastNIC 10/100,
         various other PNIC devices

if_mx.c: NDC Communications SOHOware SFA100 (Macronix 98713A), various
         other boards based on the Macronix 98713, 98713A, 98715, 98715A
         and 98725 chips

if_vr.c: D-Link DFE530-TX, other boards based on the VIA Rhine and
         Rhine II chips (note: the D-Link and certain other cards
         that actually use a Rhine II chip still return the PCI
         device ID of the Rhine I. I don't know why, and it doesn't
         really matter since the driver treats both chips the same
         anyway.)

if_wb.c: Trendware TE100-PCIE and various other cards based on the
         Winbond W89C840F chip (the Trendware card is identical to
         the sample boards Winbond sent me, so who knows how many
         clones there are running around)

All drivers include support for ifmedia, BPF and hardware multicast
filtering.

Also updated GENERIC, LINT, RELNOTES.TXT, userconfig and
sysinstall device list.

I also have a driver for the ASIX AX88140A in the works.

2 files changed, 2577 insertions, 0 deletions

diff --git a/sys/dev/vr/if_vr.c b/sys/dev/vr/if_vr.c
new file mode 100644
index 0000000..a5a2fc4
--- /dev/null
+++ b/sys/dev/vr/if_vr.c
@@ -0,0 +1,1962 @@
+/*
+ * Copyright (c) 1997, 1998
+ *	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_vr.c,v 1.13 1998/12/01 22:08:11 wpaul Exp $
+ */
+
+/*
+ * VIA Rhine fast ethernet PCI NIC driver
+ *
+ * Supports various network adapters based on the VIA Rhine
+ * and Rhine II PCI controllers, including the D-Link DFE530TX.
+ * Datasheets are available at http://www.via.com.tw.
+ *
+ * Written by Bill Paul <wpaul@ctr.columbia.edu>
+ * Electrical Engineering Department
+ * Columbia University, New York City
+ */
+
+/*
+ * The VIA Rhine controllers are similar in some respects to the
+ * the DEC tulip chips, except less complicated. The controller
+ * uses an MII bus and an external physical layer interface. The
+ * receiver has a one entry perfect filter and a 64-bit hash table
+ * multicast filter. Transmit and receive descriptors are similar
+ * to the tulip.
+ *
+ * The Rhine has a serious flaw in its transmit DMA mechanism:
+ * transmit buffers must be longword aligned. Unfortunately,
+ * FreeBSD doesn't guarantee that mbufs will be filled in starting
+ * at longword boundaries, so we have to do a buffer copy before
+ * transmission.
+ */
+
+#include "bpfilter.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/sockio.h>
+#include <sys/mbuf.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <sys/socket.h>
+
+#include <net/if.h>
+#include <net/if_arp.h>
+#include <net/ethernet.h>
+#include <net/if_dl.h>
+#include <net/if_media.h>
+
+#if NBPFILTER > 0
+#include <net/bpf.h>
+#endif
+
+#include <vm/vm.h>              /* for vtophys */
+#include <vm/pmap.h>            /* for vtophys */
+#include <machine/clock.h>      /* for DELAY */
+#include <machine/bus_pio.h>
+#include <machine/bus_memio.h>
+#include <machine/bus.h>
+
+#include <pci/pcireg.h>
+#include <pci/pcivar.h>
+
+#define VR_USEIOSPACE
+
+/* #define VR_BACKGROUND_AUTONEG */
+
+#include <pci/if_vrreg.h>
+
+#ifndef lint
+static char rcsid[] =
+	"$Id: if_vr.c,v 1.13 1998/12/01 22:08:11 wpaul Exp $";
+#endif
+
+/*
+ * Various supported device vendors/types and their names.
+ */
+static struct vr_type vr_devs[] = {
+	{ VIA_VENDORID, VIA_DEVICEID_RHINE,
+		"VIA VT3043 Rhine I 10/100BaseTX" },
+	{ VIA_VENDORID, VIA_DEVICEID_RHINE_II,
+		"VIA VT86C100A Rhine II 10/100BaseTX" },
+	{ 0, 0, NULL }
+};
+
+/*
+ * Various supported PHY vendors/types and their names. Note that
+ * this driver will work with pretty much any MII-compliant PHY,
+ * so failure to positively identify the chip is not a fatal error.
+ */
+
+static struct vr_type vr_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 unsigned long vr_count = 0;
+static char *vr_probe		__P((pcici_t, pcidi_t));
+static void vr_attach		__P((pcici_t, int));
+
+static int vr_newbuf		__P((struct vr_softc *,
+						struct vr_chain_onefrag *));
+static int vr_encap		__P((struct vr_softc *, struct vr_chain *,
+						struct mbuf * ));
+
+static void vr_rxeof		__P((struct vr_softc *));
+static void vr_rxeoc		__P((struct vr_softc *));
+static void vr_txeof		__P((struct vr_softc *));
+static void vr_txeoc		__P((struct vr_softc *));
+static void vr_intr		__P((void *));
+static void vr_start		__P((struct ifnet *));
+static int vr_ioctl		__P((struct ifnet *, u_long, caddr_t));
+static void vr_init		__P((void *));
+static void vr_stop		__P((struct vr_softc *));
+static void vr_watchdog		__P((struct ifnet *));
+static void vr_shutdown		__P((int, void *));
+static int vr_ifmedia_upd	__P((struct ifnet *));
+static void vr_ifmedia_sts	__P((struct ifnet *, struct ifmediareq *));
+
+static void vr_mii_sync		__P((struct vr_softc *));
+static void vr_mii_send		__P((struct vr_softc *, u_int32_t, int));
+static int vr_mii_readreg	__P((struct vr_softc *, struct vr_mii_frame *));
+static int vr_mii_writereg	__P((struct vr_softc *, struct vr_mii_frame *));
+static u_int16_t vr_phy_readreg	__P((struct vr_softc *, int));
+static void vr_phy_writereg	__P((struct vr_softc *, u_int16_t, u_int16_t));
+
+static void vr_autoneg_xmit	__P((struct vr_softc *));
+static void vr_autoneg_mii	__P((struct vr_softc *, int, int));
+static void vr_setmode_mii	__P((struct vr_softc *, int));
+static void vr_getmode_mii	__P((struct vr_softc *));
+static void vr_setcfg		__P((struct vr_softc *, u_int16_t));
+static u_int8_t vr_calchash	__P((u_int8_t *));
+static void vr_setmulti		__P((struct vr_softc *));
+static void vr_reset		__P((struct vr_softc *));
+static int vr_list_rx_init	__P((struct vr_softc *));
+static int vr_list_tx_init	__P((struct vr_softc *));
+
+#define VR_SETBIT(sc, reg, x)				\
+	CSR_WRITE_1(sc, reg,				\
+		CSR_READ_1(sc, reg) | x)
+
+#define VR_CLRBIT(sc, reg, x)				\
+	CSR_WRITE_1(sc, reg,				\
+		CSR_READ_1(sc, reg) & ~x)
+
+#define VR_SETBIT16(sc, reg, x)				\
+	CSR_WRITE_2(sc, reg,				\
+		CSR_READ_2(sc, reg) | x)
+
+#define VR_CLRBIT16(sc, reg, x)				\
+	CSR_WRITE_2(sc, reg,				\
+		CSR_READ_2(sc, reg) & ~x)
+
+#define VR_SETBIT32(sc, reg, x)				\
+	CSR_WRITE_4(sc, reg,				\
+		CSR_READ_4(sc, reg) | x)
+
+#define VR_CLRBIT32(sc, reg, x)				\
+	CSR_WRITE_4(sc, reg,				\
+		CSR_READ_4(sc, reg) & ~x)
+
+#define SIO_SET(x)					\
+	CSR_WRITE_1(sc, VR_MIICMD,			\
+		CSR_READ_1(sc, VR_MIICMD) | x)
+
+#define SIO_CLR(x)					\
+	CSR_WRITE_1(sc, VR_MIICMD,			\
+		CSR_READ_1(sc, VR_MIICMD) & ~x)
+
+/*
+ * Sync the PHYs by setting data bit and strobing the clock 32 times.
+ */
+static void vr_mii_sync(sc)
+	struct vr_softc		*sc;
+{
+	register int		i;
+
+	SIO_SET(VR_MIICMD_DIR|VR_MIICMD_DATAIN);
+
+	for (i = 0; i < 32; i++) {
+		SIO_SET(VR_MIICMD_CLK);
+		DELAY(1);
+		SIO_CLR(VR_MIICMD_CLK);
+		DELAY(1);
+	}
+
+	return;
+}
+
+/*
+ * Clock a series of bits through the MII.
+ */
+static void vr_mii_send(sc, bits, cnt)
+	struct vr_softc		*sc;
+	u_int32_t		bits;
+	int			cnt;
+{
+	int			i;
+
+	SIO_CLR(VR_MIICMD_CLK);
+
+	for (i = (0x1 << (cnt - 1)); i; i >>= 1) {
+                if (bits & i) {
+			SIO_SET(VR_MIICMD_DATAIN);
+                } else {
+			SIO_CLR(VR_MIICMD_DATAIN);
+                }
+		DELAY(1);
+		SIO_CLR(VR_MIICMD_CLK);
+		DELAY(1);
+		SIO_SET(VR_MIICMD_CLK);
+	}
+}
+
+/*
+ * Read an PHY register through the MII.
+ */
+static int vr_mii_readreg(sc, frame)
+	struct vr_softc		*sc;
+	struct vr_mii_frame	*frame;
+	
+{
+	int			i, ack, s;
+
+	s = splimp();
+
+	/*
+	 * Set up frame for RX.
+	 */
+	frame->mii_stdelim = VR_MII_STARTDELIM;
+	frame->mii_opcode = VR_MII_READOP;
+	frame->mii_turnaround = 0;
+	frame->mii_data = 0;
+	
+	CSR_WRITE_1(sc, VR_MIICMD, 0);
+	VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_DIRECTPGM);
+
+	/*
+ 	 * Turn on data xmit.
+	 */
+	SIO_SET(VR_MIICMD_DIR);
+
+	vr_mii_sync(sc);
+
+	/*
+	 * Send command/address info.
+	 */
+	vr_mii_send(sc, frame->mii_stdelim, 2);
+	vr_mii_send(sc, frame->mii_opcode, 2);
+	vr_mii_send(sc, frame->mii_phyaddr, 5);
+	vr_mii_send(sc, frame->mii_regaddr, 5);
+
+	/* Idle bit */
+	SIO_CLR((VR_MIICMD_CLK|VR_MIICMD_DATAIN));
+	DELAY(1);
+	SIO_SET(VR_MIICMD_CLK);
+	DELAY(1);
+
+	/* Turn off xmit. */
+	SIO_CLR(VR_MIICMD_DIR);
+
+	/* Check for ack */
+	SIO_CLR(VR_MIICMD_CLK);
+	DELAY(1);
+	SIO_SET(VR_MIICMD_CLK);
+	DELAY(1);
+	ack = CSR_READ_4(sc, VR_MIICMD) & VR_MIICMD_DATAOUT;
+
+	/*
+	 * 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++) {
+			SIO_CLR(VR_MIICMD_CLK);
+			DELAY(1);
+			SIO_SET(VR_MIICMD_CLK);
+			DELAY(1);
+		}
+		goto fail;
+	}
+
+	for (i = 0x8000; i; i >>= 1) {
+		SIO_CLR(VR_MIICMD_CLK);
+		DELAY(1);
+		if (!ack) {
+			if (CSR_READ_4(sc, VR_MIICMD) & VR_MIICMD_DATAOUT)
+				frame->mii_data |= i;
+			DELAY(1);
+		}
+		SIO_SET(VR_MIICMD_CLK);
+		DELAY(1);
+	}
+
+fail:
+
+	SIO_CLR(VR_MIICMD_CLK);
+	DELAY(1);
+	SIO_SET(VR_MIICMD_CLK);
+	DELAY(1);
+
+	splx(s);
+
+	if (ack)
+		return(1);
+	return(0);
+}
+
+/*
+ * Write to a PHY register through the MII.
+ */
+static int vr_mii_writereg(sc, frame)
+	struct vr_softc		*sc;
+	struct vr_mii_frame	*frame;
+	
+{
+	int			s;
+
+	s = splimp();
+
+	CSR_WRITE_1(sc, VR_MIICMD, 0);
+	VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_DIRECTPGM);
+
+	/*
+	 * Set up frame for TX.
+	 */
+
+	frame->mii_stdelim = VR_MII_STARTDELIM;
+	frame->mii_opcode = VR_MII_WRITEOP;
+	frame->mii_turnaround = VR_MII_TURNAROUND;
+	
+	/*
+ 	 * Turn on data output.
+	 */
+	SIO_SET(VR_MIICMD_DIR);
+
+	vr_mii_sync(sc);
+
+	vr_mii_send(sc, frame->mii_stdelim, 2);
+	vr_mii_send(sc, frame->mii_opcode, 2);
+	vr_mii_send(sc, frame->mii_phyaddr, 5);
+	vr_mii_send(sc, frame->mii_regaddr, 5);
+	vr_mii_send(sc, frame->mii_turnaround, 2);
+	vr_mii_send(sc, frame->mii_data, 16);
+
+	/* Idle bit. */
+	SIO_SET(VR_MIICMD_CLK);
+	DELAY(1);
+	SIO_CLR(VR_MIICMD_CLK);
+	DELAY(1);
+
+	/*
+	 * Turn off xmit.
+	 */
+	SIO_CLR(VR_MIICMD_DIR);
+
+	splx(s);
+
+	return(0);
+}
+
+static u_int16_t vr_phy_readreg(sc, reg)
+	struct vr_softc		*sc;
+	int			reg;
+{
+	struct vr_mii_frame	frame;
+
+	bzero((char *)&frame, sizeof(frame));
+
+	frame.mii_phyaddr = sc->vr_phy_addr;
+	frame.mii_regaddr = reg;
+	vr_mii_readreg(sc, &frame);
+
+	return(frame.mii_data);
+}
+
+static void vr_phy_writereg(sc, reg, data)
+	struct vr_softc		*sc;
+	u_int16_t		reg;
+	u_int16_t		data;
+{
+	struct vr_mii_frame	frame;
+
+	bzero((char *)&frame, sizeof(frame));
+
+	frame.mii_phyaddr = sc->vr_phy_addr;
+	frame.mii_regaddr = reg;
+	frame.mii_data = data;
+
+	vr_mii_writereg(sc, &frame);
+
+	return;
+}
+
+/*
+ * Calculate CRC of a multicast group address, return the lower 6 bits.
+ */
+static u_int8_t vr_calchash(addr)
+	u_int8_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);
+}
+
+/*
+ * Program the 64-bit multicast hash filter.
+ */
+static void vr_setmulti(sc)
+	struct vr_softc		*sc;
+{
+	struct ifnet		*ifp;
+	int			h = 0;
+	u_int32_t		hashes[2] = { 0, 0 };
+	struct ifmultiaddr	*ifma;
+	u_int8_t		rxfilt;
+	int			mcnt = 0;
+
+	ifp = &sc->arpcom.ac_if;
+
+	rxfilt = CSR_READ_1(sc, VR_RXCFG);
+
+	if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
+		rxfilt |= VR_RXCFG_RX_MULTI;
+		CSR_WRITE_1(sc, VR_RXCFG, rxfilt);
+		CSR_WRITE_4(sc, VR_MAR0, 0xFFFFFFFF);
+		CSR_WRITE_4(sc, VR_MAR1, 0xFFFFFFFF);
+		return;
+	}
+
+	/* first, zot all the existing hash bits */
+	CSR_WRITE_4(sc, VR_MAR0, 0);
+	CSR_WRITE_4(sc, VR_MAR1, 0);
+
+	/* now program new ones */
+	for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL;
+				ifma = ifma->ifma_link.le_next) {
+		if (ifma->ifma_addr->sa_family != AF_LINK)
+			continue;
+		h = vr_calchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
+		if (h < 32)
+			hashes[0] |= (1 << h);
+		else
+			hashes[1] |= (1 << (h - 32));
+		mcnt++;
+	}
+
+	if (mcnt)
+		rxfilt |= VR_RXCFG_RX_MULTI;
+	else
+		rxfilt &= ~VR_RXCFG_RX_MULTI;
+
+	CSR_WRITE_4(sc, VR_MAR0, hashes[0]);
+	CSR_WRITE_4(sc, VR_MAR1, hashes[1]);
+	CSR_WRITE_1(sc, VR_RXCFG, rxfilt);
+
+	return;
+}
+
+/*
+ * Initiate an autonegotiation session.
+ */
+static void vr_autoneg_xmit(sc)
+	struct vr_softc		*sc;
+{
+	u_int16_t		phy_sts;
+
+	vr_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET);
+	DELAY(500);
+	while(vr_phy_readreg(sc, PHY_BMCR)
+			& PHY_BMCR_RESET);
+
+	phy_sts = vr_phy_readreg(sc, PHY_BMCR);
+	phy_sts |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR;
+	vr_phy_writereg(sc, PHY_BMCR, phy_sts);
+
+	return;
+}
+
+/*
+ * Invoke autonegotiation on a PHY.
+ */
+static void vr_autoneg_mii(sc, flag, verbose)
+	struct vr_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 = vr_phy_readreg(sc, PHY_BMSR);
+	if (!(phy_sts & PHY_BMSR_CANAUTONEG)) {
+		if (verbose)
+			printf("vr%d: autonegotiation not supported\n",
+							sc->vr_unit);
+		ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX;	
+		return;
+	}
+#endif
+
+	switch (flag) {
+	case VR_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.
+	 	 */
+		vr_autoneg_xmit(sc);
+		DELAY(5000000);
+		break;
+	case VR_FLAG_SCHEDDELAY:
+		/*
+		 * Wait for the transmitter to go idle before starting
+		 * an autoneg session, otherwise vr_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->vr_cdata.vr_tx_head != NULL) {
+			sc->vr_want_auto = 1;
+			return;
+		}
+		vr_autoneg_xmit(sc);
+		ifp->if_timer = 5;
+		sc->vr_autoneg = 1;
+		sc->vr_want_auto = 0;
+		return;
+		break;
+	case VR_FLAG_DELAYTIMEO:
+		ifp->if_timer = 0;
+		sc->vr_autoneg = 0;
+		break;
+	default:
+		printf("vr%d: invalid autoneg flag: %d\n", sc->vr_unit, flag);
+		return;
+	}
+
+	if (vr_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_AUTONEGCOMP) {
+		if (verbose)
+			printf("vr%d: autoneg complete, ", sc->vr_unit);
+		phy_sts = vr_phy_readreg(sc, PHY_BMSR);
+	} else {
+		if (verbose)
+			printf("vr%d: autoneg not complete, ", sc->vr_unit);
+	}
+
+	media = vr_phy_readreg(sc, PHY_BMCR);
+
+	/* Link is good. Report modes and set duplex mode. */
+	if (vr_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT) {
+		if (verbose)
+			printf("link status good ");
+		advert = vr_phy_readreg(sc, PHY_ANAR);
+		ability = vr_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 {
+			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. */
+		vr_setcfg(sc, media);
+		vr_phy_writereg(sc, PHY_BMCR, media);
+	} else {
+		if (verbose)
+			printf("no carrier\n");
+	}
+
+	vr_init(sc);
+
+	if (sc->vr_tx_pend) {
+		sc->vr_autoneg = 0;
+		sc->vr_tx_pend = 0;
+		vr_start(ifp);
+	}
+
+	return;
+}
+
+static void vr_getmode_mii(sc)
+	struct vr_softc		*sc;
+{
+	u_int16_t		bmsr;
+	struct ifnet		*ifp;
+
+	ifp = &sc->arpcom.ac_if;
+
+	bmsr = vr_phy_readreg(sc, PHY_BMSR);
+	if (bootverbose)
+		printf("vr%d: PHY status word: %x\n", sc->vr_unit, bmsr);
+
+	/* fallback */
+	sc->ifmedia.ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX;
+
+	if (bmsr & PHY_BMSR_10BTHALF) {
+		if (bootverbose)
+			printf("vr%d: 10Mbps half-duplex mode supported\n",
+								sc->vr_unit);
+		ifmedia_add(&sc->ifmedia,
+			IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL);
+		ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL);
+	}
+
+	if (bmsr & PHY_BMSR_10BTFULL) {
+		if (bootverbose)
+			printf("vr%d: 10Mbps full-duplex mode supported\n",
+								sc->vr_unit);
+		ifmedia_add(&sc->ifmedia,
+			IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL);
+		sc->ifmedia.ifm_media = IFM_ETHER|IFM_10_T|IFM_FDX;
+	}
+
+	if (bmsr & PHY_BMSR_100BTXHALF) {
+		if (bootverbose)
+			printf("vr%d: 100Mbps half-duplex mode supported\n",
+								sc->vr_unit);
+		ifp->if_baudrate = 100000000;
+		ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_TX, 0, NULL);
+		ifmedia_add(&sc->ifmedia,
+			IFM_ETHER|IFM_100_TX|IFM_HDX, 0, NULL);
+		sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_TX|IFM_HDX;
+	}
+
+	if (bmsr & PHY_BMSR_100BTXFULL) {
+		if (bootverbose)
+			printf("vr%d: 100Mbps full-duplex mode supported\n",
+								sc->vr_unit);
+		ifp->if_baudrate = 100000000;
+		ifmedia_add(&sc->ifmedia,
+			IFM_ETHER|IFM_100_TX|IFM_FDX, 0, NULL);
+		sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_TX|IFM_FDX;
+	}
+
+	/* Some also support 100BaseT4. */
+	if (bmsr & PHY_BMSR_100BT4) {
+		if (bootverbose)
+			printf("vr%d: 100baseT4 mode supported\n", sc->vr_unit);
+		ifp->if_baudrate = 100000000;
+		ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_T4, 0, NULL);
+		sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_T4;
+#ifdef FORCE_AUTONEG_TFOUR
+		if (bootverbose)
+			printf("vr%d: forcing on autoneg support for BT4\n",
+							 sc->vr_unit);
+		ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0 NULL):
+		sc->ifmedia.ifm_media = IFM_ETHER|IFM_AUTO;
+#endif
+	}
+
+	if (bmsr & PHY_BMSR_CANAUTONEG) {
+		if (bootverbose)
+			printf("vr%d: autoneg supported\n", sc->vr_unit);
+		ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL);
+		sc->ifmedia.ifm_media = IFM_ETHER|IFM_AUTO;
+	}
+
+	return;
+}
+
+/*
+ * Set speed and duplex mode.
+ */
+static void vr_setmode_mii(sc, media)
+	struct vr_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->vr_autoneg) {
+		printf("vr%d: canceling autoneg session\n", sc->vr_unit);
+		ifp->if_timer = sc->vr_autoneg = sc->vr_want_auto = 0;
+		bmcr = vr_phy_readreg(sc, PHY_BMCR);
+		bmcr &= ~PHY_BMCR_AUTONEGENBL;
+		vr_phy_writereg(sc, PHY_BMCR, bmcr);
+	}
+
+	printf("vr%d: selecting MII, ", sc->vr_unit);
+
+	bmcr = vr_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;
+	}
+
+	vr_setcfg(sc, bmcr);
+	vr_phy_writereg(sc, PHY_BMCR, bmcr);
+
+	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 vr_setcfg(sc, bmcr)
+	struct vr_softc		*sc;
+	u_int16_t		bmcr;
+{
+	int			restart = 0;
+
+	if (CSR_READ_2(sc, VR_COMMAND) & (VR_CMD_TX_ON|VR_CMD_RX_ON)) {
+		restart = 1;
+		VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_TX_ON|VR_CMD_RX_ON));
+	}
+
+	if (bmcr & PHY_BMCR_DUPLEX)
+		VR_SETBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX);
+	else
+		VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX);
+
+	if (restart)
+		VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_RX_ON);
+
+	return;
+}
+
+static void vr_reset(sc)
+	struct vr_softc		*sc;
+{
+	register int		i;
+
+	VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RESET);
+
+	for (i = 0; i < VR_TIMEOUT; i++) {
+		DELAY(10);
+		if (!(CSR_READ_2(sc, VR_COMMAND) & VR_CMD_RESET))
+			break;
+	}
+	if (i == VR_TIMEOUT)
+		printf("vr%d: reset never completed!\n", sc->vr_unit);
+
+	/* Wait a little while for the chip to get its brains in order. */
+	DELAY(1000);
+
+        return;
+}
+
+/*
+ * Probe for a VIA Rhine chip. Check the PCI vendor and device
+ * IDs against our list and return a device name if we find a match.
+ */
+static char *
+vr_probe(config_id, device_id)
+	pcici_t			config_id;
+	pcidi_t			device_id;
+{
+	struct vr_type		*t;
+
+	t = vr_devs;
+
+	while(t->vr_name != NULL) {
+		if ((device_id & 0xFFFF) == t->vr_vid &&
+		    ((device_id >> 16) & 0xFFFF) == t->vr_did) {
+			return(t->vr_name);
+		}
+		t++;
+	}
+
+	return(NULL);
+}
+
+/*
+ * Attach the interface. Allocate softc structures, do ifmedia
+ * setup and ethernet/BPF attach.
+ */
+static void
+vr_attach(config_id, unit)
+	pcici_t			config_id;
+	int			unit;
+{
+	int			s, i;
+#ifndef VR_USEIOSPACE
+	vm_offset_t		pbase, vbase;
+#endif
+	u_char			eaddr[ETHER_ADDR_LEN];
+	u_int32_t		command;
+	struct vr_softc		*sc;
+	struct ifnet		*ifp;
+	int			media = IFM_ETHER|IFM_100_TX|IFM_FDX;
+	unsigned int		round;
+	caddr_t			roundptr;
+	struct vr_type		*p;
+	u_int16_t		phy_vid, phy_did, phy_sts;
+
+	s = splimp();
+
+	sc = malloc(sizeof(struct vr_softc), M_DEVBUF, M_NOWAIT);
+	if (sc == NULL) {
+		printf("vr%d: no memory for softc struct!\n", unit);
+		return;
+	}
+	bzero(sc, sizeof(struct vr_softc));
+
+	/*
+	 * Handle power management nonsense.
+	 */
+
+	command = pci_conf_read(config_id, VR_PCI_CAPID) & 0x000000FF;
+	if (command == 0x01) {
+
+		command = pci_conf_read(config_id, VR_PCI_PWRMGMTCTRL);
+		if (command & VR_PSTATE_MASK) {
+			u_int32_t		iobase, membase, irq;
+
+			/* Save important PCI config data. */
+			iobase = pci_conf_read(config_id, VR_PCI_LOIO);
+			membase = pci_conf_read(config_id, VR_PCI_LOMEM);
+			irq = pci_conf_read(config_id, VR_PCI_INTLINE);
+
+			/* Reset the power state. */
+			printf("vr%d: chip is in D%d power mode "
+			"-- setting to D0\n", unit, command & VR_PSTATE_MASK);
+			command &= 0xFFFFFFFC;
+			pci_conf_write(config_id, VR_PCI_PWRMGMTCTRL, command);
+
+			/* Restore PCI config data. */
+			pci_conf_write(config_id, VR_PCI_LOIO, iobase);
+			pci_conf_write(config_id, VR_PCI_LOMEM, membase);
+			pci_conf_write(config_id, VR_PCI_INTLINE, irq);
+		}
+	}
+
+	/*
+	 * Map control/status registers.
+	 */
+	command = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG);
+	command |= (PCIM_CMD_PORTEN|PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN);
+	pci_conf_write(config_id, PCI_COMMAND_STATUS_REG, command);
+	command = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG);
+
+#ifdef VR_USEIOSPACE
+	if (!(command & PCIM_CMD_PORTEN)) {
+		printf("vr%d: failed to enable I/O ports!\n", unit);
+		free(sc, M_DEVBUF);
+		goto fail;
+	}
+
+	if (!pci_map_port(config_id, VR_PCI_LOIO,
+					(u_int16_t *)(&sc->vr_bhandle))) {
+		printf ("vr%d: couldn't map ports\n", unit);
+		goto fail;
+	}
+	sc->vr_btag = I386_BUS_SPACE_IO;
+#else
+	if (!(command & PCIM_CMD_MEMEN)) {
+		printf("vr%d: failed to enable memory mapping!\n", unit);
+		goto fail;
+	}
+
+	if (!pci_map_mem(config_id, VR_PCI_LOMEM, &vbase, &pbase)) {
+		printf ("vr%d: couldn't map memory\n", unit);
+		goto fail;
+	}
+
+	sc->vr_bhandle = vbase;
+	sc->vr_btag = I386_BUS_SPACE_MEM;
+#endif
+
+	/* Allocate interrupt */
+	if (!pci_map_int(config_id, vr_intr, sc, &net_imask)) {
+		printf("vr%d: couldn't map interrupt\n", unit);
+		goto fail;
+	}
+
+	/* Reset the adapter. */
+	vr_reset(sc);
+
+	/*
+	 * Get station address. The way the Rhine chips work,
+	 * you're not allowed to directly access the EEPROM once
+	 * they've been programmed a special way. Consequently,
+	 * we need to read the node address from the PAR0 and PAR1
+	 * registers.
+	 */
+	VR_SETBIT(sc, VR_EECSR, VR_EECSR_LOAD);
+	DELAY(200);
+	for (i = 0; i < ETHER_ADDR_LEN; i++)
+		eaddr[i] = CSR_READ_1(sc, VR_PAR0 + i);
+
+	/*
+	 * A Rhine chip was detected. Inform the world.
+	 */
+	printf("vr%d: Ethernet address: %6D\n", unit, eaddr, ":");
+
+	sc->vr_unit = unit;
+	bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
+
+	sc->vr_ldata_ptr = malloc(sizeof(struct vr_list_data) + 8,
+				M_DEVBUF, M_NOWAIT);
+	if (sc->vr_ldata_ptr == NULL) {
+		free(sc, M_DEVBUF);
+		printf("vr%d: no memory for list buffers!\n", unit);
+		return;
+	}
+
+	sc->vr_ldata = (struct vr_list_data *)sc->vr_ldata_ptr;
+	round = (unsigned int)sc->vr_ldata_ptr & 0xF;
+	roundptr = sc->vr_ldata_ptr;
+	for (i = 0; i < 8; i++) {
+		if (round % 8) {
+			round++;
+			roundptr++;
+		} else
+			break;
+	}
+	sc->vr_ldata = (struct vr_list_data *)roundptr;
+	bzero(sc->vr_ldata, sizeof(struct vr_list_data));
+
+	ifp = &sc->arpcom.ac_if;
+	ifp->if_softc = sc;
+	ifp->if_unit = unit;
+	ifp->if_name = "vr";
+	ifp->if_mtu = ETHERMTU;
+	ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
+	ifp->if_ioctl = vr_ioctl;
+	ifp->if_output = ether_output;
+	ifp->if_start = vr_start;
+	ifp->if_watchdog = vr_watchdog;
+	ifp->if_init = vr_init;
+	ifp->if_baudrate = 10000000;
+
+	if (bootverbose)
+		printf("vr%d: probing for a PHY\n", sc->vr_unit);
+	for (i = VR_PHYADDR_MIN; i < VR_PHYADDR_MAX + 1; i++) {
+		if (bootverbose)
+			printf("vr%d: checking address: %d\n",
+						sc->vr_unit, i);
+		sc->vr_phy_addr = i;
+		vr_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET);
+		DELAY(500);
+		while(vr_phy_readreg(sc, PHY_BMCR)
+				& PHY_BMCR_RESET);
+		if ((phy_sts = vr_phy_readreg(sc, PHY_BMSR)))
+			break;
+	}
+	if (phy_sts) {
+		phy_vid = vr_phy_readreg(sc, PHY_VENID);
+		phy_did = vr_phy_readreg(sc, PHY_DEVID);
+		if (bootverbose)
+			printf("vr%d: found PHY at address %d, ",
+					sc->vr_unit, sc->vr_phy_addr);
+		if (bootverbose)
+			printf("vendor id: %x device id: %x\n",
+				phy_vid, phy_did);
+		p = vr_phys;
+		while(p->vr_vid) {
+			if (phy_vid == p->vr_vid &&
+				(phy_did | 0x000F) == p->vr_did) {
+				sc->vr_pinfo = p;
+				break;
+			}
+			p++;
+		}
+		if (sc->vr_pinfo == NULL)
+			sc->vr_pinfo = &vr_phys[PHY_UNKNOWN];
+		if (bootverbose)
+			printf("vr%d: PHY type: %s\n",
+				sc->vr_unit, sc->vr_pinfo->vr_name);
+	} else {
+		printf("vr%d: MII without any phy!\n", sc->vr_unit);
+		goto fail;
+	}
+
+	/*
+	 * Do ifmedia setup.
+	 */
+	ifmedia_init(&sc->ifmedia, 0, vr_ifmedia_upd, vr_ifmedia_sts);
+
+	vr_getmode_mii(sc);
+	vr_autoneg_mii(sc, VR_FLAG_FORCEDELAY, 1);
+	media = sc->ifmedia.ifm_media;
+	vr_stop(sc);
+
+	ifmedia_set(&sc->ifmedia, media);
+
+	/*
+	 * Call MI attach routines.
+	 */
+	if_attach(ifp);
+	ether_ifattach(ifp);
+
+#if NBPFILTER > 0
+	bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
+#endif
+
+	at_shutdown(vr_shutdown, sc, SHUTDOWN_POST_SYNC);
+
+fail:
+	splx(s);
+	return;
+}
+
+/*
+ * Initialize the transmit descriptors.
+ */
+static int vr_list_tx_init(sc)
+	struct vr_softc		*sc;
+{
+	struct vr_chain_data	*cd;
+	struct vr_list_data	*ld;
+	int			i;
+
+	cd = &sc->vr_cdata;
+	ld = sc->vr_ldata;
+	for (i = 0; i < VR_TX_LIST_CNT; i++) {
+		cd->vr_tx_chain[i].vr_ptr = &ld->vr_tx_list[i];
+		if (i == (VR_TX_LIST_CNT - 1))
+			cd->vr_tx_chain[i].vr_nextdesc = 
+				&cd->vr_tx_chain[0];
+		else
+			cd->vr_tx_chain[i].vr_nextdesc =
+				&cd->vr_tx_chain[i + 1];
+	}
+
+	cd->vr_tx_free = &cd->vr_tx_chain[0];
+	cd->vr_tx_tail = cd->vr_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 vr_list_rx_init(sc)
+	struct vr_softc		*sc;
+{
+	struct vr_chain_data	*cd;
+	struct vr_list_data	*ld;
+	int			i;
+
+	cd = &sc->vr_cdata;
+	ld = sc->vr_ldata;
+
+	for (i = 0; i < VR_RX_LIST_CNT; i++) {
+		cd->vr_rx_chain[i].vr_ptr =
+			(struct vr_desc *)&ld->vr_rx_list[i];
+		if (vr_newbuf(sc, &cd->vr_rx_chain[i]) == ENOBUFS)
+			return(ENOBUFS);
+		if (i == (VR_RX_LIST_CNT - 1)) {
+			cd->vr_rx_chain[i].vr_nextdesc =
+					&cd->vr_rx_chain[0];
+			ld->vr_rx_list[i].vr_next =
+					vtophys(&ld->vr_rx_list[0]);
+		} else {
+			cd->vr_rx_chain[i].vr_nextdesc =
+					&cd->vr_rx_chain[i + 1];
+			ld->vr_rx_list[i].vr_next =
+					vtophys(&ld->vr_rx_list[i + 1]);
+		}
+	}
+
+	cd->vr_rx_head = &cd->vr_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 vr_newbuf(sc, c)
+	struct vr_softc		*sc;
+	struct vr_chain_onefrag	*c;
+{
+	struct mbuf		*m_new = NULL;
+
+	MGETHDR(m_new, M_DONTWAIT, MT_DATA);
+	if (m_new == NULL) {
+		printf("vr%d: no memory for rx list -- packet dropped!\n",
+								sc->vr_unit);
+		return(ENOBUFS);
+	}
+
+	MCLGET(m_new, M_DONTWAIT);
+	if (!(m_new->m_flags & M_EXT)) {
+		printf("vr%d: no memory for rx list -- packet dropped!\n",
+								sc->vr_unit);
+		m_freem(m_new);
+		return(ENOBUFS);
+	}
+
+	c->vr_mbuf = m_new;
+	c->vr_ptr->vr_status = VR_RXSTAT;
+	c->vr_ptr->vr_data = vtophys(mtod(m_new, caddr_t));
+	c->vr_ptr->vr_ctl = VR_RXCTL_CHAIN | (MCLBYTES - 1);
+
+	return(0);
+}
+
+/*
+ * A frame has been uploaded: pass the resulting mbuf chain up to
+ * the higher level protocols.
+ */
+static void vr_rxeof(sc)
+	struct vr_softc		*sc;
+{
+        struct ether_header	*eh;
+        struct mbuf		*m;
+        struct ifnet		*ifp;
+	struct vr_chain_onefrag	*cur_rx;
+	int			total_len = 0;
+	u_int32_t		rxstat;
+
+	ifp = &sc->arpcom.ac_if;
+
+	while(!((rxstat = sc->vr_cdata.vr_rx_head->vr_ptr->vr_status) &
+							VR_RXSTAT_OWN)) {
+		cur_rx = sc->vr_cdata.vr_rx_head;
+		sc->vr_cdata.vr_rx_head = cur_rx->vr_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 & VR_RXSTAT_RXERR) {
+			ifp->if_ierrors++;
+			printf("vr%d: rx error: ", sc->vr_unit);
+			switch(rxstat & 0x000000FF) {
+			case VR_RXSTAT_CRCERR:
+				printf("crc error\n");
+				break;
+			case VR_RXSTAT_FRAMEALIGNERR:
+				printf("frame alignment error\n");
+				break;
+			case VR_RXSTAT_FIFOOFLOW:
+				printf("FIFO overflow\n");
+				break;
+			case VR_RXSTAT_GIANT:
+				printf("received giant packet\n");
+				break;
+			case VR_RXSTAT_RUNT:
+				printf("received runt packet\n");
+				break;
+			case VR_RXSTAT_BUSERR:
+				printf("system bus error\n");
+				break;
+			case VR_RXSTAT_BUFFERR:
+				printf("rx buffer error\n");
+				break;
+			default:
+				printf("unknown rx error\n");
+				break;
+			}
+			cur_rx->vr_ptr->vr_status = VR_RXSTAT;
+			cur_rx->vr_ptr->vr_ctl =
+			VR_RXCTL_CHAIN | (MCLBYTES - 1);
+			continue;
+		}
+
+		/* No errors; receive the packet. */	
+		m = cur_rx->vr_mbuf;
+		total_len = VR_RXBYTES(cur_rx->vr_ptr->vr_status);
+
+		/*
+		 * 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 (vr_newbuf(sc, cur_rx) == ENOBUFS) {
+			ifp->if_ierrors++;
+			cur_rx->vr_ptr->vr_status =
+				VR_RXSTAT_FIRSTFRAG|VR_RXSTAT_LASTFRAG;
+			cur_rx->vr_ptr->vr_ctl =
+			VR_RXCTL_CHAIN | (MCLBYTES - 1);
+			continue;
+		}
+
+		ifp->if_ipackets++;
+		eh = mtod(m, struct ether_header *);
+		m->m_pkthdr.rcvif = ifp;
+		m->m_pkthdr.len = m->m_len = total_len;
+#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) {
+			bpf_mtap(ifp, m);
+			if (ifp->if_flags & IFF_PROMISC &&
+				(bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr,
+						ETHER_ADDR_LEN) &&
+					(eh->ether_dhost[0] & 1) == 0)) {
+				m_freem(m);
+				continue;
+			}
+		}
+#endif
+		/* Remove header from mbuf and pass it on. */
+		m_adj(m, sizeof(struct ether_header));
+		ether_input(ifp, eh, m);
+	}
+
+	return;
+}
+
+void vr_rxeoc(sc)
+	struct vr_softc		*sc;
+{
+
+	vr_rxeof(sc);
+	VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_RX_ON);
+	CSR_WRITE_4(sc, VR_RXADDR, vtophys(sc->vr_cdata.vr_rx_head->vr_ptr));
+	VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_ON);
+	VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_GO);
+
+	return;
+}
+
+/*
+ * A frame was downloaded to the chip. It's safe for us to clean up
+ * the list buffers.
+ */
+
+static void vr_txeof(sc)
+	struct vr_softc		*sc;
+{
+	struct vr_chain		*cur_tx;
+	struct ifnet		*ifp;
+	register struct mbuf	*n;
+
+	ifp = &sc->arpcom.ac_if;
+
+	/* Clear the timeout timer. */
+	ifp->if_timer = 0;
+
+	/* Sanity check. */
+	if (sc->vr_cdata.vr_tx_head == NULL)
+		return;
+
+	/*
+	 * Go through our tx list and free mbufs for those
+	 * frames that have been transmitted.
+	 */
+	while(sc->vr_cdata.vr_tx_head->vr_mbuf != NULL) {
+		u_int32_t		txstat;
+
+		cur_tx = sc->vr_cdata.vr_tx_head;
+		txstat = cur_tx->vr_ptr->vr_status;
+
+		if ((txstat & VR_TXSTAT_OWN) || txstat == VR_UNSENT)
+			break;
+
+		if (txstat & VR_TXSTAT_ERRSUM) {
+			ifp->if_oerrors++;
+			if (txstat & VR_TXSTAT_DEFER)
+				ifp->if_collisions++;
+			if (txstat & VR_TXSTAT_LATECOLL)
+				ifp->if_collisions++;
+		}
+
+		ifp->if_collisions +=(txstat & VR_TXSTAT_COLLCNT) >> 3;
+
+		ifp->if_opackets++;
+        	MFREE(cur_tx->vr_mbuf, n);
+		cur_tx->vr_mbuf = NULL;
+
+		if (sc->vr_cdata.vr_tx_head == sc->vr_cdata.vr_tx_tail) {
+			sc->vr_cdata.vr_tx_head = NULL;
+			sc->vr_cdata.vr_tx_tail = NULL;
+			break;
+		}
+
+		sc->vr_cdata.vr_tx_head = cur_tx->vr_nextdesc;
+	}
+
+	return;
+}
+
+/*
+ * TX 'end of channel' interrupt handler.
+ */
+static void vr_txeoc(sc)
+	struct vr_softc		*sc;
+{
+	struct ifnet		*ifp;
+
+	ifp = &sc->arpcom.ac_if;
+
+	ifp->if_timer = 0;
+
+	if (sc->vr_cdata.vr_tx_head == NULL) {
+		ifp->if_flags &= ~IFF_OACTIVE;
+		sc->vr_cdata.vr_tx_tail = NULL;
+		if (sc->vr_want_auto)
+			vr_autoneg_mii(sc, VR_FLAG_SCHEDDELAY, 1);
+	} else {
+		if (VR_TXOWN(sc->vr_cdata.vr_tx_head) == VR_UNSENT) {
+			VR_TXOWN(sc->vr_cdata.vr_tx_head) = VR_TXSTAT_OWN;
+			ifp->if_timer = 5;
+			VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_TX_GO);
+		}
+	}
+
+	return;
+}
+
+static void vr_intr(arg)
+	void			*arg;
+{
+	struct vr_softc		*sc;
+	struct ifnet		*ifp;
+	u_int16_t		status;
+
+	sc = arg;
+	ifp = &sc->arpcom.ac_if;
+
+	/* Supress unwanted interrupts. */
+	if (!(ifp->if_flags & IFF_UP)) {
+		vr_stop(sc);
+		return;
+	}
+
+	/* Disable interrupts. */
+	CSR_WRITE_2(sc, VR_IMR, 0x0000);
+
+	for (;;) {
+
+		status = CSR_READ_2(sc, VR_ISR);
+		if (status)
+			CSR_WRITE_2(sc, VR_ISR, status);
+
+		if ((status & VR_INTRS) == 0)
+			break;
+
+		if (status & VR_ISR_RX_OK)
+			vr_rxeof(sc);
+
+		if ((status & VR_ISR_RX_ERR) || (status & VR_ISR_RX_NOBUF) ||
+		    (status & VR_ISR_RX_NOBUF) || (status & VR_ISR_RX_OFLOW) ||
+		    (status & VR_ISR_RX_DROPPED)) {
+			vr_rxeof(sc);
+			vr_rxeoc(sc);
+		}
+
+		if (status & VR_ISR_TX_OK) {
+			vr_txeof(sc);
+			vr_txeoc(sc);
+		}
+
+		if ((status & VR_ISR_TX_UNDERRUN)||(status & VR_ISR_TX_ABRT)){ 
+			ifp->if_oerrors++;
+			vr_txeof(sc);
+			if (sc->vr_cdata.vr_tx_head != NULL) {
+				VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON);
+				VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_GO);
+			}
+		}
+
+		if (status & VR_ISR_BUSERR) {
+			vr_reset(sc);
+			vr_init(sc);
+		}
+	}
+
+	/* Re-enable interrupts. */
+	CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
+
+	if (ifp->if_snd.ifq_head != NULL) {
+		vr_start(ifp);
+	}
+
+	return;
+}
+
+/*
+ * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data
+ * pointers to the fragment pointers.
+ */
+static int vr_encap(sc, c, m_head)
+	struct vr_softc		*sc;
+	struct vr_chain		*c;
+	struct mbuf		*m_head;
+{
+	int			frag = 0;
+	struct vr_desc		*f = NULL;
+	int			total_len;
+	struct mbuf		*m;
+
+	m = m_head;
+	total_len = 0;
+
+	/*
+	 * The VIA Rhine wants packet buffers to be longword
+	 * aligned, but very often our mbufs aren't. Rather than
+	 * waste time trying to decide when to copy and when not
+	 * to copy, just do it all the time.
+	 */
+	if (m != NULL) {
+		struct mbuf		*m_new = NULL;
+
+		MGETHDR(m_new, M_DONTWAIT, MT_DATA);
+		if (m_new == NULL) {
+			printf("vr%d: no memory for tx list", sc->vr_unit);
+			return(1);
+		}
+		if (m_head->m_pkthdr.len > MHLEN) {
+			MCLGET(m_new, M_DONTWAIT);
+			if (!(m_new->m_flags & M_EXT)) {
+				m_freem(m_new);
+				printf("vr%d: no memory for tx list",
+						sc->vr_unit);
+				return(1);
+			}
+		}
+		m_copydata(m_head, 0, m_head->m_pkthdr.len,	
+					mtod(m_new, caddr_t));
+		m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len;
+		m_freem(m_head);
+		m_head = m_new;
+		/*
+		 * The Rhine chip doesn't auto-pad, so we have to make
+		 * sure to pad short frames out to the minimum frame length
+		 * ourselves.
+		 */
+		if (m_head->m_len < VR_MIN_FRAMELEN) {
+			m_new->m_pkthdr.len += VR_MIN_FRAMELEN - m_new->m_len;
+			m_new->m_len = m_new->m_pkthdr.len;
+		}
+		f = c->vr_ptr;
+		f->vr_data = vtophys(mtod(m_new, caddr_t));
+		f->vr_ctl = total_len = m_new->m_len;
+		f->vr_ctl |= VR_TXCTL_TLINK|VR_TXCTL_FIRSTFRAG;
+		f->vr_status = 0;
+		frag = 1;
+	}
+
+	c->vr_mbuf = m_head;
+	c->vr_ptr->vr_ctl |= VR_TXCTL_LASTFRAG;
+	c->vr_ptr->vr_next = vtophys(c->vr_nextdesc->vr_ptr);
+
+	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 vr_start(ifp)
+	struct ifnet		*ifp;
+{
+	struct vr_softc		*sc;
+	struct mbuf		*m_head = NULL;
+	struct vr_chain		*cur_tx = NULL, *start_tx;
+
+	sc = ifp->if_softc;
+
+	if (sc->vr_autoneg) {
+		sc->vr_tx_pend = 1;
+		return;
+	}
+
+	/*
+	 * Check for an available queue slot. If there are none,
+	 * punt.
+	 */
+	if (sc->vr_cdata.vr_tx_free->vr_mbuf != NULL) {
+		ifp->if_flags |= IFF_OACTIVE;
+		return;
+	}
+
+	start_tx = sc->vr_cdata.vr_tx_free;
+
+	while(sc->vr_cdata.vr_tx_free->vr_mbuf == NULL) {
+		IF_DEQUEUE(&ifp->if_snd, m_head);
+		if (m_head == NULL)
+			break;
+
+		/* Pick a descriptor off the free list. */
+		cur_tx = sc->vr_cdata.vr_tx_free;
+		sc->vr_cdata.vr_tx_free = cur_tx->vr_nextdesc;
+
+		/* Pack the data into the descriptor. */
+		vr_encap(sc, cur_tx, m_head);
+
+		if (cur_tx != start_tx)
+			VR_TXOWN(cur_tx) = VR_TXSTAT_OWN;
+
+#if NBPFILTER > 0
+		/*
+		 * If there's a BPF listener, bounce a copy of this frame
+		 * to him.
+		 */
+		if (ifp->if_bpf)
+			bpf_mtap(ifp, cur_tx->vr_mbuf);
+#endif
+	}
+
+	/*
+	 * Place the request for the upload interrupt
+	 * in the last descriptor in the chain. This way, if
+	 * we're chaining several packets at once, we'll only
+	 * get an interupt once for the whole chain rather than
+	 * once for each packet.
+	 */
+	cur_tx->vr_ptr->vr_ctl |= VR_TXCTL_FINT;
+	sc->vr_cdata.vr_tx_tail = cur_tx;
+
+	if (sc->vr_cdata.vr_tx_head == NULL) {
+		sc->vr_cdata.vr_tx_head = start_tx;
+		VR_TXOWN(start_tx) = VR_TXSTAT_OWN;
+		VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_TX_GO);
+	} else {
+		VR_TXOWN(start_tx) = VR_UNSENT;
+	}
+
+	/*
+	 * Set a timeout in case the chip goes out to lunch.
+	 */
+	ifp->if_timer = 5;
+
+	return;
+}
+
+static void vr_init(xsc)
+	void			*xsc;
+{
+	struct vr_softc		*sc = xsc;
+	struct ifnet		*ifp = &sc->arpcom.ac_if;
+	u_int16_t		phy_bmcr = 0;
+	int			s;
+
+	if (sc->vr_autoneg)
+		return;
+
+	s = splimp();
+
+	if (sc->vr_pinfo != NULL)
+		phy_bmcr = vr_phy_readreg(sc, PHY_BMCR);
+
+	/*
+	 * Cancel pending I/O and free all RX/TX buffers.
+	 */
+	vr_stop(sc);
+	vr_reset(sc);
+
+	VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_THRESH);
+	VR_SETBIT(sc, VR_RXCFG, VR_RXTHRESH_STORENFWD);
+
+	VR_CLRBIT(sc, VR_TXCFG, VR_TXCFG_TX_THRESH);
+	VR_SETBIT(sc, VR_TXCFG, VR_TXTHRESH_STORENFWD);
+
+	/* Init circular RX list. */
+	if (vr_list_rx_init(sc) == ENOBUFS) {
+		printf("vr%d: initialization failed: no "
+			"memory for rx buffers\n", sc->vr_unit);
+		vr_stop(sc);
+		(void)splx(s);
+		return;
+	}
+
+	/*
+	 * Init tx descriptors.
+	 */
+	vr_list_tx_init(sc);
+
+	/* If we want promiscuous mode, set the allframes bit. */
+	if (ifp->if_flags & IFF_PROMISC)
+		VR_SETBIT(sc, VR_RXCFG, VR_RXCFG_RX_PROMISC);
+	else
+		VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_PROMISC);
+
+	/* Set capture broadcast bit to capture broadcast frames. */
+	if (ifp->if_flags & IFF_BROADCAST)
+		VR_SETBIT(sc, VR_RXCFG, VR_RXCFG_RX_BROAD);
+	else
+		VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_BROAD);
+
+	/*
+	 * Program the multicast filter, if necessary.
+	 */
+	vr_setmulti(sc);
+
+	/*
+	 * Load the address of the RX list.
+	 */
+	CSR_WRITE_4(sc, VR_RXADDR, vtophys(sc->vr_cdata.vr_rx_head->vr_ptr));
+
+	/* Enable receiver and transmitter. */
+	CSR_WRITE_2(sc, VR_COMMAND, VR_CMD_TX_NOPOLL|VR_CMD_START|
+				    VR_CMD_TX_ON|VR_CMD_RX_ON|
+				    VR_CMD_RX_GO);
+
+	vr_setcfg(sc, vr_phy_readreg(sc, PHY_BMCR));
+
+	CSR_WRITE_4(sc, VR_TXADDR, vtophys(&sc->vr_ldata->vr_tx_list[0]));
+
+	/*
+	 * Enable interrupts.
+	 */
+	CSR_WRITE_2(sc, VR_ISR, 0xFFFF);
+	CSR_WRITE_2(sc, VR_IMR, VR_INTRS);
+
+	/* Restore state of BMCR */
+	if (sc->vr_pinfo != NULL)
+		vr_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 vr_ifmedia_upd(ifp)
+	struct ifnet		*ifp;
+{
+	struct vr_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)
+		vr_autoneg_mii(sc, VR_FLAG_SCHEDDELAY, 1);
+	else
+		vr_setmode_mii(sc, ifm->ifm_media);
+
+	return(0);
+}
+
+/*
+ * Report current media status.
+ */
+static void vr_ifmedia_sts(ifp, ifmr)
+	struct ifnet		*ifp;
+	struct ifmediareq	*ifmr;
+{
+	struct vr_softc		*sc;
+	u_int16_t		advert = 0, ability = 0;
+
+	sc = ifp->if_softc;
+
+	ifmr->ifm_active = IFM_ETHER;
+
+	if (!(vr_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_AUTONEGENBL)) {
+		if (vr_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 (vr_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_DUPLEX)
+			ifmr->ifm_active |= IFM_FDX;
+		else
+			ifmr->ifm_active |= IFM_HDX;
+		return;
+	}
+
+	ability = vr_phy_readreg(sc, PHY_LPAR);
+	advert = vr_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 vr_ioctl(ifp, command, data)
+	struct ifnet		*ifp;
+	u_long			command;
+	caddr_t			data;
+{
+	struct vr_softc		*sc = ifp->if_softc;
+	struct ifreq		*ifr = (struct ifreq *) data;
+	int			s, error = 0;
+
+	s = splimp();
+
+	switch(command) {
+	case SIOCSIFADDR:
+	case SIOCGIFADDR:
+	case SIOCSIFMTU:
+		error = ether_ioctl(ifp, command, data);
+		break;
+	case SIOCSIFFLAGS:
+		if (ifp->if_flags & IFF_UP) {
+			vr_init(sc);
+		} else {
+			if (ifp->if_flags & IFF_RUNNING)
+				vr_stop(sc);
+		}
+		error = 0;
+		break;
+	case SIOCADDMULTI:
+	case SIOCDELMULTI:
+		vr_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 vr_watchdog(ifp)
+	struct ifnet		*ifp;
+{
+	struct vr_softc		*sc;
+
+	sc = ifp->if_softc;
+
+	if (sc->vr_autoneg) {
+		vr_autoneg_mii(sc, VR_FLAG_DELAYTIMEO, 1);
+		return;
+	}
+
+	ifp->if_oerrors++;
+	printf("vr%d: watchdog timeout\n", sc->vr_unit);
+
+	if (!(vr_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT))
+		printf("vr%d: no carrier - transceiver cable problem?\n",
+								sc->vr_unit);
+
+	vr_stop(sc);
+	vr_reset(sc);
+	vr_init(sc);
+
+	if (ifp->if_snd.ifq_head != NULL)
+		vr_start(ifp);
+
+	return;
+}
+
+/*
+ * Stop the adapter and free any mbufs allocated to the
+ * RX and TX lists.
+ */
+static void vr_stop(sc)
+	struct vr_softc		*sc;
+{
+	register int		i;
+	struct ifnet		*ifp;
+
+	ifp = &sc->arpcom.ac_if;
+	ifp->if_timer = 0;
+
+	VR_SETBIT16(sc, VR_COMMAND, VR_CMD_STOP);
+	VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_RX_ON|VR_CMD_TX_ON));
+	CSR_WRITE_2(sc, VR_IMR, 0x0000);
+	CSR_WRITE_4(sc, VR_TXADDR, 0x00000000);
+	CSR_WRITE_4(sc, VR_RXADDR, 0x00000000);
+
+	/*
+	 * Free data in the RX lists.
+	 */
+	for (i = 0; i < VR_RX_LIST_CNT; i++) {
+		if (sc->vr_cdata.vr_rx_chain[i].vr_mbuf != NULL) {
+			m_freem(sc->vr_cdata.vr_rx_chain[i].vr_mbuf);
+			sc->vr_cdata.vr_rx_chain[i].vr_mbuf = NULL;
+		}
+	}
+	bzero((char *)&sc->vr_ldata->vr_rx_list,
+		sizeof(sc->vr_ldata->vr_rx_list));
+
+	/*
+	 * Free the TX list buffers.
+	 */
+	for (i = 0; i < VR_TX_LIST_CNT; i++) {
+		if (sc->vr_cdata.vr_tx_chain[i].vr_mbuf != NULL) {
+			m_freem(sc->vr_cdata.vr_tx_chain[i].vr_mbuf);
+			sc->vr_cdata.vr_tx_chain[i].vr_mbuf = NULL;
+		}
+	}
+
+	bzero((char *)&sc->vr_ldata->vr_tx_list,
+		sizeof(sc->vr_ldata->vr_tx_list));
+
+	ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
+
+	return;
+}
+
+/*
+ * Stop all chip I/O so that the kernel's probe routines don't
+ * get confused by errant DMAs when rebooting.
+ */
+static void vr_shutdown(howto, arg)
+	int			howto;
+	void			*arg;
+{
+	struct vr_softc		*sc = (struct vr_softc *)arg;
+
+	vr_stop(sc);
+
+	return;
+}
+
+static struct pci_device vr_device = {
+	"vr",
+	vr_probe,
+	vr_attach,
+	&vr_count,
+	NULL
+};
+DATA_SET(pcidevice_set, vr_device);
diff --git a/sys/dev/vr/if_vrreg.h b/sys/dev/vr/if_vrreg.h
new file mode 100644
index 0000000..42f3a13
--- /dev/null
+++ b/sys/dev/vr/if_vrreg.h
@@ -0,0 +1,615 @@
+/*
+ * Copyright (c) 1997, 1998
+ *	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_vrreg.h,v 1.8 1998/12/01 22:08:11 wpaul Exp $
+ */
+
+/*
+ * Rhine register definitions.
+ */
+
+#define VR_PAR0			0x00	/* node address 0 to 4 */
+#define VR_PAR1			0x04	/* node address 2 to 6 */
+#define VR_RXCFG		0x06	/* receiver config register */
+#define VR_TXCFG		0x07	/* transmit config register */
+#define VR_COMMAND		0x08	/* command register */
+#define VR_ISR			0x0C	/* interrupt/status register */
+#define VR_IMR			0x0E	/* interrupt mask register */
+#define VR_MAR0			0x10	/* multicast hash 0 */
+#define VR_MAR1			0x14	/* multicast hash 1 */
+#define VR_RXADDR		0x18	/* rx descriptor list start addr */
+#define VR_TXADDR		0x1C	/* tx descriptor list start addr */
+#define VR_CURRXDESC0		0x20
+#define VR_CURRXDESC1		0x24
+#define VR_CURRXDESC2		0x28
+#define VR_CURRXDESC3		0x2C
+#define VR_NEXTRXDESC0		0x30
+#define VR_NEXTRXDESC1		0x34
+#define VR_NEXTRXDESC2		0x38
+#define VR_NEXTRXDESC3		0x3C
+#define VR_CURTXDESC0		0x40
+#define VR_CURTXDESC1		0x44
+#define VR_CURTXDESC2		0x48
+#define VR_CURTXDESC3		0x4C
+#define VR_NEXTTXDESC0		0x50
+#define VR_NEXTTXDESC1		0x54
+#define VR_NEXTTXDESC2		0x58
+#define VR_NEXTTXDESC3		0x5C
+#define VR_CURRXDMA		0x60	/* current RX DMA address */
+#define VR_CURTXDMA		0x64	/* current TX DMA address */
+#define VR_TALLYCNT		0x68	/* tally counter test register */
+#define VR_PHYADDR		0x6C
+#define VR_MIISTAT		0x6D
+#define VR_BCR0			0x6E
+#define VR_BCR1			0x6F
+#define VR_MIICMD		0x70
+#define VR_MIIADDR		0x71
+#define VR_MIIDATA		0x72
+#define VR_EECSR		0x74
+#define VR_TEST			0x75
+#define VR_GPIO			0x76
+#define VR_CONFIG		0x78
+#define VR_MPA_CNT		0x7C
+#define VR_CRC_CNT		0x7E
+
+/*
+ * RX config bits.
+ */
+#define VR_RXCFG_RX_ERRPKTS	0x01
+#define VR_RXCFG_RX_RUNT	0x02
+#define VR_RXCFG_RX_MULTI	0x04
+#define VR_RXCFG_RX_BROAD	0x08
+#define VR_RXCFG_RX_PROMISC	0x10
+#define VR_RXCFG_RX_THRESH	0xE0
+
+#define VR_RXTHRESH_32BYTES	0x00
+#define VR_RXTHRESH_64BYTES	0x20
+#define VR_RXTHRESH_128BYTES	0x40
+#define VR_RXTHRESH_256BYTES	0x60
+#define VR_RXTHRESH_512BYTES	0x80
+#define VR_RXTHRESH_768BYTES	0xA0
+#define VR_RXTHRESH_1024BYTES	0xC0
+#define VR_RXTHRESH_STORENFWD	0xE0
+
+/*
+ * TX config bits.
+ */
+#define VR_TXCFG_RSVD0		0x01
+#define VR_TXCFG_LOOPBKMODE	0x06
+#define VR_TXCFG_BACKOFF	0x08
+#define VR_TXCFG_RSVD1		0x10
+#define VR_TXCFG_TX_THRESH	0xE0
+
+#define VR_TXTHRESH_32BYTES	0x00
+#define VR_TXTHRESH_64BYTES	0x20
+#define VR_TXTHRESH_128BYTES	0x40
+#define VR_TXTHRESH_256BYTES	0x60
+#define VR_TXTHRESH_512BYTES	0x80
+#define VR_TXTHRESH_768BYTES	0xA0
+#define VR_TXTHRESH_1024BYTES	0xC0
+#define VR_TXTHRESH_STORENFWD	0xE0
+
+/*
+ * Command register bits.
+ */
+#define VR_CMD_INIT		0x0001
+#define VR_CMD_START		0x0002
+#define VR_CMD_STOP		0x0004
+#define VR_CMD_RX_ON		0x0008
+#define VR_CMD_TX_ON		0x0010
+#define	VR_CMD_TX_GO		0x0020
+#define VR_CMD_RX_GO		0x0040
+#define VR_CMD_RSVD		0x0080
+#define VR_CMD_RX_EARLY		0x0100
+#define VR_CMD_TX_EARLY		0x0200
+#define VR_CMD_FULLDUPLEX	0x0400
+#define VR_CMD_TX_NOPOLL	0x0800
+
+#define VR_CMD_RESET		0x8000
+
+/*
+ * Interrupt status bits.
+ */
+#define VR_ISR_RX_OK		0x0001	/* packet rx ok */
+#define VR_ISR_TX_OK		0x0002	/* packet tx ok */
+#define VR_ISR_RX_ERR		0x0004	/* packet rx with err */
+#define VR_ISR_TX_ABRT		0x0008	/* tx aborted due to excess colls */
+#define VR_ISR_TX_UNDERRUN	0x0010	/* tx buffer underflow */
+#define VR_ISR_RX_NOBUF		0x0020	/* no rx buffer available */
+#define VR_ISR_BUSERR		0x0040	/* PCI bus error */
+#define VR_ISR_STATSOFLOW	0x0080	/* stats counter oflow */
+#define VR_ISR_RX_EARLY		0x0100	/* rx early */
+#define VR_ISR_LINKSTAT		0x0200	/* MII status change */
+#define VR_ISR_RX_OFLOW		0x0400	/* rx FIFO overflow */
+#define VR_ISR_RX_DROPPED	0x0800
+#define VR_ISR_RX_NOBUF2	0x1000
+#define VR_ISR_TX_ABRT2		0x2000
+#define VR_ISR_LINKSTAT2	0x4000
+#define VR_ISR_MAGICPACKET	0x8000
+
+/*
+ * Interrupt mask bits.
+ */
+#define VR_IMR_RX_OK		0x0001	/* packet rx ok */
+#define VR_IMR_TX_OK		0x0002	/* packet tx ok */
+#define VR_IMR_RX_ERR		0x0004	/* packet rx with err */
+#define VR_IMR_TX_ABRT		0x0008	/* tx aborted due to excess colls */
+#define VR_IMR_TX_UNDERRUN	0x0010	/* tx buffer underflow */
+#define VR_IMR_RX_NOBUF		0x0020	/* no rx buffer available */
+#define VR_IMR_BUSERR		0x0040	/* PCI bus error */
+#define VR_IMR_STATSOFLOW	0x0080	/* stats counter oflow */
+#define VR_IMR_RX_EARLY		0x0100	/* rx early */
+#define VR_IMR_LINKSTAT		0x0200	/* MII status change */
+#define VR_IMR_RX_OFLOW		0x0400	/* rx FIFO overflow */
+#define VR_IMR_RX_DROPPED	0x0800
+#define VR_IMR_RX_NOBUF2	0x1000
+#define VR_IMR_TX_ABRT2		0x2000
+#define VR_IMR_LINKSTAT2	0x4000
+#define VR_IMR_MAGICPACKET	0x8000
+
+#define VR_INTRS							\
+	(VR_IMR_RX_OK|VR_IMR_TX_OK|VR_IMR_RX_NOBUF|			\
+	VR_IMR_TX_ABRT|VR_IMR_TX_UNDERRUN|VR_IMR_BUSERR|		\
+	VR_IMR_RX_ERR|VR_ISR_RX_DROPPED)
+
+/*
+ * MII status register.
+ */
+
+#define VR_MIISTAT_SPEED	0x01
+#define VR_MIISTAT_LINKFAULT	0x02
+#define VR_MIISTAT_MGTREADERR	0x04
+#define VR_MIISTAT_MIIERR	0x08
+#define VR_MIISTAT_PHYOPT	0x10
+#define VR_MIISTAT_MDC_SPEED	0x20
+#define VR_MIISTAT_RSVD		0x40
+#define VR_MIISTAT_GPIO1POLL	0x80
+
+/*
+ * MII command register bits.
+ */
+#define VR_MIICMD_CLK		0x01
+#define VR_MIICMD_DATAOUT	0x02
+#define VR_MIICMD_DATAIN	0x04
+#define VR_MIICMD_DIR		0x08
+#define VR_MIICMD_DIRECTPGM	0x10
+#define VR_MIICMD_WRITE_ENB	0x20
+#define VR_MIICMD_READ_ENB	0x40
+#define VR_MIICMD_AUTOPOLL	0x80
+
+/*
+ * EEPROM control bits.
+ */
+#define VR_EECSR_DATAIN		0x01	/* data out */
+#define VR_EECSR_DATAOUT	0x02	/* data in */
+#define VR_EECSR_CLK		0x04	/* clock */
+#define VR_EECSR_CS		0x08	/* chip select */
+#define VR_EECSR_DPM		0x10
+#define VR_EECSR_LOAD		0x20
+#define VR_EECSR_EMBP		0x40
+#define VR_EECSR_EEPR		0x80
+
+#define VR_EECMD_WRITE		0x140
+#define VR_EECMD_READ		0x180
+#define VR_EECMD_ERASE		0x1c0
+
+/*
+ * Test register bits.
+ */
+#define VR_TEST_TEST0		0x01
+#define VR_TEST_TEST1		0x02
+#define VR_TEST_TEST2		0x04
+#define VR_TEST_TSTUD		0x08
+#define VR_TEST_TSTOV		0x10
+#define VR_TEST_BKOFF		0x20
+#define VR_TEST_FCOL		0x40
+#define VR_TEST_HBDES		0x80
+
+/*
+ * Config register bits.
+ */
+#define VR_CFG_GPIO2OUTENB	0x00000001
+#define VR_CFG_GPIO2OUT		0x00000002	/* gen. purp. pin */
+#define VR_CFG_GPIO2IN		0x00000004	/* gen. purp. pin */
+#define VR_CFG_AUTOOPT		0x00000008	/* enable rx/tx autopoll */
+#define VR_CFG_MIIOPT		0x00000010
+#define VR_CFG_MMIENB		0x00000020	/* memory mapped mode enb */
+#define VR_CFG_JUMPER		0x00000040	/* PHY and oper. mode select */
+#define VR_CFG_EELOAD		0x00000080	/* enable EEPROM programming */
+#define VR_CFG_LATMENB		0x00000100	/* larency timer effect enb. */
+#define VR_CFG_MRREADWAIT	0x00000200
+#define VR_CFG_MRWRITEWAIT	0x00000400
+#define VR_CFG_RX_ARB		0x00000800
+#define VR_CFG_TX_ARB		0x00001000
+#define VR_CFG_READMULTI	0x00002000
+#define VR_CFG_TX_PACE		0x00004000
+#define VR_CFG_TX_QDIS		0x00008000
+#define VR_CFG_ROMSEL0		0x00010000
+#define VR_CFG_ROMSEL1		0x00020000
+#define VR_CFG_ROMSEL2		0x00040000
+#define VR_CFG_ROMTIMESEL	0x00080000
+#define VR_CFG_RSVD0		0x00100000
+#define VR_CFG_ROMDLY		0x00200000
+#define VR_CFG_ROMOPT		0x00400000
+#define VR_CFG_RSVD1		0x00800000
+#define VR_CFG_BACKOFFOPT	0x01000000
+#define VR_CFG_BACKOFFMOD	0x02000000
+#define VR_CFG_CAPEFFECT	0x04000000
+#define VR_CFG_BACKOFFRAND	0x08000000
+#define VR_CFG_MAGICKPACKET	0x10000000
+#define VR_CFG_PCIREADLINE	0x20000000
+#define VR_CFG_DIAG		0x40000000
+#define VR_CFG_GPIOEN		0x80000000
+
+/*
+ * Rhine TX/RX list structure.
+ */
+
+struct vr_desc {
+	u_int32_t		vr_status;
+	u_int32_t		vr_ctl;
+	u_int32_t		vr_ptr1;
+	u_int32_t		vr_ptr2;
+};
+
+#define vr_data		vr_ptr1
+#define vr_next		vr_ptr2
+
+
+#define VR_RXSTAT_RXERR		0x00000001
+#define VR_RXSTAT_CRCERR	0x00000002
+#define VR_RXSTAT_FRAMEALIGNERR	0x00000004
+#define VR_RXSTAT_FIFOOFLOW	0x00000008
+#define VR_RXSTAT_GIANT		0x00000010
+#define VR_RXSTAT_RUNT		0x00000020
+#define VR_RXSTAT_BUSERR	0x00000040
+#define VR_RXSTAT_BUFFERR	0x00000080
+#define VR_RXSTAT_LASTFRAG	0x00000100
+#define VR_RXSTAT_FIRSTFRAG	0x00000200
+#define VR_RXSTAT_RLINK		0x00000400
+#define VR_RXSTAT_RX_PHYS	0x00000800
+#define VR_RXSTAT_RX_BROAD	0x00001000
+#define VR_RXSTAT_RX_MULTI	0x00002000
+#define VR_RXSTAT_RX_OK		0x00004000
+#define VR_RXSTAT_RXLEN		0x07FF0000
+#define VR_RXSTAT_RXLEN_EXT	0x78000000
+#define VR_RXSTAT_OWN		0x80000000
+
+#define VR_RXBYTES(x)		((x & VR_RXSTAT_RXLEN) >> 16)
+#define VR_RXSTAT (VR_RXSTAT_FIRSTFRAG|VR_RXSTAT_LASTFRAG|VR_RXSTAT_OWN)
+
+#define VR_RXCTL_BUFLEN		0x000007FF
+#define VR_RXCTL_BUFLEN_EXT	0x00007800
+#define VR_RXCTL_CHAIN		0x00008000
+#define VR_RXCTL_RX_INTR	0x00800000
+
+
+#define VR_TXSTAT_DEFER		0x00000001
+#define VR_TXSTAT_UNDERRUN	0x00000002
+#define VR_TXSTAT_COLLCNT	0x00000078
+#define VR_TXSTAT_SQE		0x00000080
+#define VR_TXSTAT_ABRT		0x00000100
+#define VR_TXSTAT_LATECOLL	0x00000200
+#define VR_TXSTAT_CARRLOST	0x00000400
+#define VR_TXSTAT_BUSERR	0x00002000
+#define VR_TXSTAT_JABTIMEO	0x00004000
+#define VR_TXSTAT_ERRSUM	0x00008000
+#define VR_TXSTAT_OWN		0x80000000
+
+#define VR_TXCTL_BUFLEN		0x000007FF
+#define VR_TXCTL_BUFLEN_EXT	0x00007800
+#define VR_TXCTL_TLINK		0x00008000
+#define VR_TXCTL_FIRSTFRAG	0x00200000
+#define VR_TXCTL_LASTFRAG	0x00400000
+#define VR_TXCTL_FINT		0x00800000
+
+
+#define VR_MAXFRAGS		16
+#define VR_RX_LIST_CNT		64
+#define VR_TX_LIST_CNT		64
+#define VR_MIN_FRAMELEN		60
+#define VR_FRAMELEN		1536
+
+#define VR_TXOWN(x)		x->vr_ptr->vr_status
+#define VR_UNSENT		0x12341234
+
+struct vr_list_data {
+	struct vr_desc		vr_rx_list[VR_RX_LIST_CNT];
+	struct vr_desc		vr_tx_list[VR_TX_LIST_CNT];
+};
+
+struct vr_chain {
+	struct vr_desc		*vr_ptr;
+	struct mbuf		*vr_mbuf;
+	struct vr_chain		*vr_nextdesc;
+};
+
+struct vr_chain_onefrag {
+	struct vr_desc		*vr_ptr;
+	struct mbuf		*vr_mbuf;
+	struct vr_chain_onefrag	*vr_nextdesc;
+};
+
+struct vr_chain_data {
+	struct vr_chain_onefrag	vr_rx_chain[VR_RX_LIST_CNT];
+	struct vr_chain		vr_tx_chain[VR_TX_LIST_CNT];
+
+	struct vr_chain_onefrag	*vr_rx_head;
+
+	struct vr_chain		*vr_tx_head;
+	struct vr_chain		*vr_tx_tail;
+	struct vr_chain		*vr_tx_free;
+};
+
+struct vr_type {
+	u_int16_t		vr_vid;
+	u_int16_t		vr_did;
+	char			*vr_name;
+};
+
+struct vr_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 VR_MII_STARTDELIM	0x01
+#define VR_MII_READOP		0x02
+#define VR_MII_WRITEOP		0x01
+#define VR_MII_TURNAROUND	0x02
+
+#define VR_FLAG_FORCEDELAY	1
+#define VR_FLAG_SCHEDDELAY	2
+#define VR_FLAG_DELAYTIMEO	3	
+
+struct vr_softc {
+	struct arpcom		arpcom;		/* interface info */
+	struct ifmedia		ifmedia;	/* media info */
+	bus_space_handle_t	vr_bhandle;	/* bus space handle */
+	bus_space_tag_t		vr_btag;	/* bus space tag */
+	struct vr_type		*vr_info;	/* Rhine adapter info */
+	struct vr_type		*vr_pinfo;	/* phy info */
+	u_int8_t		vr_unit;	/* interface number */
+	u_int8_t		vr_type;
+	u_int8_t		vr_phy_addr;	/* PHY address */
+	u_int8_t		vr_tx_pend;	/* TX pending */
+	u_int8_t		vr_want_auto;
+	u_int8_t		vr_autoneg;
+	caddr_t			vr_ldata_ptr;
+	struct vr_list_data	*vr_ldata;
+	struct vr_chain_data	vr_cdata;
+};
+
+/*
+ * register space access macros
+ */
+#define CSR_WRITE_4(sc, reg, val)	\
+	bus_space_write_4(sc->vr_btag, sc->vr_bhandle, reg, val)
+#define CSR_WRITE_2(sc, reg, val)	\
+	bus_space_write_2(sc->vr_btag, sc->vr_bhandle, reg, val)
+#define CSR_WRITE_1(sc, reg, val)	\
+	bus_space_write_1(sc->vr_btag, sc->vr_bhandle, reg, val)
+
+#define CSR_READ_4(sc, reg)		\
+	bus_space_read_4(sc->vr_btag, sc->vr_bhandle, reg)
+#define CSR_READ_2(sc, reg)		\
+	bus_space_read_2(sc->vr_btag, sc->vr_bhandle, reg)
+#define CSR_READ_1(sc, reg)		\
+	bus_space_read_1(sc->vr_btag, sc->vr_bhandle, reg)
+
+#define VR_TIMEOUT		1000
+
+/*
+ * General constants that are fun to know.
+ *
+ * VIA vendor ID
+ */
+#define	VIA_VENDORID		0x1106
+
+/*
+ * VIA Rhine device IDs.
+ */
+#define	VIA_DEVICEID_RHINE	0x3043
+#define VIA_DEVICEID_RHINE_II	0x6100
+
+
+/*
+ * 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 VR_PCI_VENDOR_ID	0x00
+#define VR_PCI_DEVICE_ID	0x02
+#define VR_PCI_COMMAND		0x04
+#define VR_PCI_STATUS		0x06
+#define VR_PCI_CLASSCODE	0x09
+#define VR_PCI_LATENCY_TIMER	0x0D
+#define VR_PCI_HEADER_TYPE	0x0E
+#define VR_PCI_LOIO		0x10
+#define VR_PCI_LOMEM		0x14
+#define VR_PCI_BIOSROM		0x30
+#define VR_PCI_INTLINE		0x3C
+#define VR_PCI_INTPIN		0x3D
+#define VR_PCI_MINGNT		0x3E
+#define VR_PCI_MINLAT		0x0F
+#define VR_PCI_RESETOPT		0x48
+#define VR_PCI_EEPROM_DATA	0x4C
+
+/* power management registers */
+#define VR_PCI_CAPID		0xDC /* 8 bits */
+#define VR_PCI_NEXTPTR		0xDD /* 8 bits */
+#define VR_PCI_PWRMGMTCAP	0xDE /* 16 bits */
+#define VR_PCI_PWRMGMTCTRL	0xE0 /* 16 bits */
+
+#define VR_PSTATE_MASK		0x0003
+#define VR_PSTATE_D0		0x0000
+#define VR_PSTATE_D1		0x0002
+#define VR_PSTATE_D2		0x0002
+#define VR_PSTATE_D3		0x0003
+#define VR_PME_EN		0x0010
+#define VR_PME_STATUS		0x8000
+
+#define PHY_UNKNOWN		6
+
+#define VR_PHYADDR_MIN		0x00
+#define VR_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