NetBSD gm ethernet driver ported from NetBSD. compiles, but does not yet

configure. mii code is very suspect. Additional debugging will be done
after configuration issues are addressed.

1 files changed, 1004 insertions, 0 deletions

diff --git a/sys/arch/powerpc/mac/if_gm.c b/sys/arch/powerpc/mac/if_gm.c
new file mode 100644
index 00000000000..1bdf959fa99
--- /dev/null
+++ b/sys/arch/powerpc/mac/if_gm.c
@@ -0,0 +1,1004 @@
+/*	$NetBSD: if_gm.c,v 1.2 2000/03/04 11:17:00 tsubai Exp $	*/
+
+/*-
+ * Copyright (c) 2000 Tsubai Masanari.  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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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.
+ */
+
+#ifdef __NetBSD__
+#include "opt_inet.h"
+#include "opt_ns.h"
+#include "bpfilter.h"
+#endif /* __NetBSD__ */
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/ioctl.h>
+#include <sys/kernel.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/systm.h>
+
+#include <vm/vm.h>
+
+#include <net/if.h>
+#include <netinet/in.h>
+#include <netinet/if_ether.h>
+#include <net/if_media.h>
+
+#if NBPFILTER > 0
+#include <net/bpf.h>
+#endif
+
+#ifdef INET
+#include <netinet/in.h>
+#ifdef __NetBSD__
+#include <netinet/if_inarp.h>
+#endif /* __NetBSD__ */
+#endif
+
+#include <dev/mii/mii.h>
+#include <dev/mii/miivar.h>
+
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcidevs.h>
+
+#include <dev/ofw/openfirm.h>
+#include <powerpc/mac/if_gmreg.h>
+#include <machine/pio.h>
+
+#define NTXBUF 4
+#define NRXBUF 32
+
+struct gmac_softc {
+	struct device sc_dev;
+#ifdef __OpenBSD__
+	struct arpcom arpcom;	/* per-instance network data */
+#define sc_if arpcom.ac_if
+#define	sc_enaddr arpcom.ac_enaddr
+#else
+	struct ethercom sc_ethercom;
+#define sc_if sc_ethercom.ec_if
+	char sc_laddr[6];
+#endif
+	vaddr_t sc_reg;
+	struct gmac_dma *sc_txlist;
+	struct gmac_dma *sc_rxlist;
+	int sc_txnext;
+	int sc_rxlast;
+	caddr_t sc_txbuf[NTXBUF];
+	caddr_t sc_rxbuf[NRXBUF];
+	struct mii_data sc_mii;
+};
+
+
+int gmac_match __P((struct device *, void *, void *));
+void gmac_attach __P((struct device *, struct device *, void *));
+
+static __inline u_int gmac_read_reg __P((struct gmac_softc *, int));
+static __inline void gmac_write_reg __P((struct gmac_softc *, int, u_int));
+
+static __inline void gmac_start_txdma __P((struct gmac_softc *));
+static __inline void gmac_start_rxdma __P((struct gmac_softc *));
+static __inline void gmac_stop_txdma __P((struct gmac_softc *));
+static __inline void gmac_stop_rxdma __P((struct gmac_softc *));
+
+int gmac_intr __P((void *));
+void gmac_tint __P((struct gmac_softc *));
+void gmac_rint __P((struct gmac_softc *));
+struct mbuf * gmac_get __P((struct gmac_softc *, caddr_t, int));
+void gmac_start __P((struct ifnet *));
+int gmac_put __P((struct gmac_softc *, caddr_t, struct mbuf *));
+
+void gmac_stop __P((struct gmac_softc *));
+void gmac_reset __P((struct gmac_softc *));
+void gmac_init __P((struct gmac_softc *));
+void gmac_init_mac __P((struct gmac_softc *));
+
+int gmac_ioctl __P((struct ifnet *, u_long, caddr_t));
+void gmac_watchdog __P((struct ifnet *));
+
+int gmac_mediachange __P((struct ifnet *));
+void gmac_mediastatus __P((struct ifnet *, struct ifmediareq *));
+int gmac_mii_readreg __P((struct device *, int, int));
+void gmac_mii_writereg __P((struct device *, int, int, int));
+void gmac_mii_statchg __P((struct device *));
+void gmac_mii_tick __P((void *));
+
+struct cfattach gm_ca = {
+	sizeof(struct gmac_softc), gmac_match, gmac_attach
+};
+struct cfdriver gm_cd = {
+	NULL, "gm", DV_IFNET
+};
+
+int
+gmac_match(parent, match, aux)
+	struct device *parent;
+	void *match;
+	void *aux;
+{
+	struct pci_attach_args *pa = aux;
+
+	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE &&
+	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_GMAC)
+		return 1;
+
+	return 0;
+}
+
+void
+gmac_attach(parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct gmac_softc *sc = (void *)self;
+	struct pci_attach_args *pa = aux;
+	struct ifnet *ifp = &sc->sc_if;
+	struct mii_data *mii = &sc->sc_mii;
+	pci_intr_handle_t ih;
+	const char *intrstr = NULL;
+#if 0
+	int node;
+#endif
+	int i;
+	char *p;
+	struct gmac_dma *dp;
+	u_int32_t reg[10];
+	u_char laddr[6];
+
+#if 0
+	node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag);
+	if (node == 0) {
+		printf(": cannot find gmac node\n");
+		return;
+	}
+
+	OF_getprop(node, "local-mac-address", laddr, sizeof laddr);
+	OF_getprop(node, "assigned-addresses", reg, sizeof reg);
+	#endif
+
+#ifdef __OpenBSD__
+	bcopy(laddr, sc->arpcom.ac_enaddr, 6);
+#else /* !__OpenBSD */
+	bcopy(laddr, sc->sc_laddr, sizeof laddr);
+#endif /* !__OpenBSD */
+	sc->sc_reg = reg[2];
+
+#ifdef __NetBSD__
+	if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
+	    pa->pa_intrline, &ih)) {
+		printf(": unable to map interrupt\n");
+		return;
+	}
+	intrstr = pci_intr_string(pa->pa_pc, ih);
+
+	if (pci_intr_establish(pa->pa_pc, ih, IPL_NET, gmac_intr, sc) == NULL) {
+		printf(": unable to establish interrupt");
+		if (intrstr)
+			printf(" at %s", intrstr);
+		printf("\n");
+		return;
+	}
+#endif /* __NetBSD__ */
+#ifdef __OpenBSD__
+	if (pci_intr_establish(pa->pa_pc, pa->pa_intrline, IPL_NET,
+		gmac_intr, sc, "gmac") == NULL)
+	{
+		printf(": unable to establish interrupt");
+		if (intrstr)
+			printf(" at %x", pa->pa_intrline);
+		printf("\n");
+		return;
+	}
+#endif /* __OpenBSD__ */
+
+	/* Setup packet buffers and dma descriptors. */
+	p = malloc((NRXBUF + NTXBUF) * 2048 + 3 * 0x800, M_DEVBUF, M_NOWAIT);
+	if (p == NULL) {
+		printf(": cannot malloc buffers\n");
+		return;
+	}
+	p = (void *)roundup((vaddr_t)p, 0x800);
+	bzero(p, 2048 * (NRXBUF + NTXBUF) + 2 * 0x800);
+
+	sc->sc_rxlist = (void *)p;
+	p += 0x800;
+	sc->sc_txlist = (void *)p;
+	p += 0x800;
+
+	dp = sc->sc_rxlist;
+	for (i = 0; i < NRXBUF; i++) {
+		sc->sc_rxbuf[i] = p;
+		dp->address = htole32(vtophys(p));
+		dp->cmd = htole32(GMAC_OWN);
+		dp++;
+		p += 2048;
+	}
+
+	dp = sc->sc_txlist;
+	for (i = 0; i < NTXBUF; i++) {
+		sc->sc_txbuf[i] = p;
+		dp->address = htole32(vtophys(p));
+		dp++;
+		p += 2048;
+	}
+#ifdef __OpenBSD__
+	{
+		/* rather than call openfirmware, expect that ethernet
+		 * is already intialized, read the address
+		 * from the device -- hack?
+		 */
+		u_int reg;
+		reg = gmac_read_reg(sc, GMAC_MACADDRESS0);
+		laddr[5] = reg & 0xff;
+		laddr[4] = (reg >> 8) & 0xff;
+		reg = gmac_read_reg(sc, GMAC_MACADDRESS1);
+		laddr[3] = reg & 0xff;
+		laddr[2] = (reg >> 8) & 0xff;
+		reg = gmac_read_reg(sc, GMAC_MACADDRESS2);
+		laddr[1] = reg & 0xff;
+		laddr[0] = (reg >> 8) & 0xff;
+	}
+#endif /* __OpenBSD__ */
+
+	printf(": Ethernet address %s\n", ether_sprintf(laddr));
+	printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr);
+
+	gmac_reset(sc);
+	gmac_init_mac(sc);
+
+	bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ);
+	ifp->if_softc = sc;
+	ifp->if_ioctl = gmac_ioctl;
+	ifp->if_start = gmac_start;
+	ifp->if_watchdog = gmac_watchdog;
+	ifp->if_flags =
+		IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST;
+	ifp->if_flags |= IFF_ALLMULTI;
+
+	mii->mii_ifp = ifp;
+	mii->mii_readreg = gmac_mii_readreg;
+	mii->mii_writereg = gmac_mii_writereg;
+	mii->mii_statchg = gmac_mii_statchg;
+
+	ifmedia_init(&mii->mii_media, 0, gmac_mediachange, gmac_mediastatus);
+#ifdef __NetBSD__
+	mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0);
+#endif /* __NetBSD__ */
+
+	/* Choose a default media. */
+	if (LIST_FIRST(&mii->mii_phys) == NULL) {
+		ifmedia_add(&mii->mii_media, IFM_ETHER|IFM_NONE, 0, NULL);
+		ifmedia_set(&mii->mii_media, IFM_ETHER|IFM_NONE);
+	} else
+		ifmedia_set(&mii->mii_media, IFM_ETHER|IFM_AUTO);
+
+	if_attach(ifp);
+#ifdef __NetBSD__
+	ether_ifattach(ifp, laddr);
+#else /* !__NetBSD__ */
+	ether_ifattach(ifp);
+#endif /* !__NetBSD__ */
+
+#if NBPFILTER > 0
+	bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header));
+#endif
+}
+
+u_int
+gmac_read_reg(sc, reg)
+	struct gmac_softc *sc;
+	int reg;
+{
+	return in32rb(sc->sc_reg + reg);
+}
+
+void
+gmac_write_reg(sc, reg, val)
+	struct gmac_softc *sc;
+	int reg;
+	u_int val;
+{
+	out32rb(sc->sc_reg + reg, val);
+}
+
+void
+gmac_start_txdma(sc)
+	struct gmac_softc *sc;
+{
+	u_int x;
+
+	x = gmac_read_reg(sc, GMAC_TXDMACONFIG);
+	x |= 1;
+	gmac_write_reg(sc, GMAC_TXDMACONFIG, x);
+	x = gmac_read_reg(sc, GMAC_TXMACCONFIG);
+	x |= 1;
+	gmac_write_reg(sc, GMAC_TXMACCONFIG, x);
+}
+
+void
+gmac_start_rxdma(sc)
+	struct gmac_softc *sc;
+{
+	u_int x;
+
+	x = gmac_read_reg(sc, GMAC_RXDMACONFIG);
+	x |= 1;
+	gmac_write_reg(sc, GMAC_RXDMACONFIG, x);
+	x = gmac_read_reg(sc, GMAC_RXMACCONFIG);
+	x |= 1;
+	gmac_write_reg(sc, GMAC_RXMACCONFIG, x);
+}
+
+void
+gmac_stop_txdma(sc)
+	struct gmac_softc *sc;
+{
+	u_int x;
+
+	x = gmac_read_reg(sc, GMAC_TXDMACONFIG);
+	x &= ~1;
+	gmac_write_reg(sc, GMAC_TXDMACONFIG, x);
+	x = gmac_read_reg(sc, GMAC_TXMACCONFIG);
+	x &= ~1;
+	gmac_write_reg(sc, GMAC_TXMACCONFIG, x);
+}
+
+void
+gmac_stop_rxdma(sc)
+	struct gmac_softc *sc;
+{
+	u_int x;
+
+	x = gmac_read_reg(sc, GMAC_RXDMACONFIG);
+	x &= ~1;
+	gmac_write_reg(sc, GMAC_RXDMACONFIG, x);
+	x = gmac_read_reg(sc, GMAC_RXMACCONFIG);
+	x &= ~1;
+	gmac_write_reg(sc, GMAC_RXMACCONFIG, x);
+}
+
+int
+gmac_intr(v)
+	void *v;
+{
+	struct gmac_softc *sc = v;
+	u_int status;
+
+	status = gmac_read_reg(sc, GMAC_STATUS) & 0xff;
+	if (status == 0)
+		return 0;
+
+	if (status & GMAC_INT_RXDONE)
+		gmac_rint(sc);
+
+	if (status & GMAC_INT_TXDONE)
+		gmac_tint(sc);
+
+	return 1;
+}
+
+void
+gmac_tint(sc)
+	struct gmac_softc *sc;
+{
+	struct ifnet *ifp = &sc->sc_if;
+	volatile struct gmac_dma *dp;
+	int i;
+
+	i = gmac_read_reg(sc, GMAC_TXDMACOMPLETE);
+	dp = &sc->sc_txlist[i];
+	dp->cmd = 0;				/* to be safe */
+	__asm __volatile ("sync");
+
+	ifp->if_flags &= ~IFF_OACTIVE;
+	ifp->if_timer = 0;
+	ifp->if_opackets++;
+	gmac_start(ifp);
+}
+
+void
+gmac_rint(sc)
+	struct gmac_softc *sc;
+{
+	struct ifnet *ifp = &sc->sc_if;
+	volatile struct gmac_dma *dp;
+	struct mbuf *m;
+	int i, len;
+	u_int cmd;
+
+	for (i = sc->sc_rxlast;; i++) {
+		if (i == NRXBUF)
+			i = 0;
+
+		dp = &sc->sc_rxlist[i];
+#ifdef __OpenBSD__
+		cmd = letoh32(dp->cmd);
+#else /* !__OpenBSD__ */
+		cmd = le32toh(dp->cmd);
+#endif /* !__OpenBSD__ */
+		if (cmd & GMAC_OWN)
+			break;
+		len = (cmd >> 16) & GMAC_LEN_MASK;
+		len -= 4;	/* CRC */
+
+#ifdef __OpenBSD__
+		if (letoh32(dp->cmd_hi) & 0x40000000) {
+#else /* !__OpenBSD__ */
+		if (le32toh(dp->cmd_hi) & 0x40000000) {
+#endif /* !__OpenBSD__ */
+			ifp->if_ierrors++;
+			goto next;
+		}
+
+		m = gmac_get(sc, sc->sc_rxbuf[i], len);
+		if (m == NULL) {
+			ifp->if_ierrors++;
+			goto next;
+		}
+
+#if NBPFILTER > 0
+		/*
+		 * Check if there's a BPF listener on this interface.
+		 * If so, hand off the raw packet to BPF.
+		 */
+		if (ifp->if_bpf)
+			bpf_tap(ifp->if_bpf, sc->sc_rxbuf[i], len);
+#endif
+#ifdef __OpenBSD__
+		m_adj(m, sizeof(struct ether_header));
+		ether_input(ifp,(void*) sc->sc_rxbuf[i], m);
+#else /* !__OpenBSD__ */
+		(*ifp->if_input)(ifp, m);
+#endif /* !__OpenBSD__ */
+		ifp->if_ipackets++;
+
+next:
+		dp->cmd_hi = 0;
+		__asm __volatile ("sync");
+		dp->cmd = htole32(GMAC_OWN);
+	}
+	sc->sc_rxlast = i;
+}
+
+struct mbuf *
+gmac_get(sc, pkt, totlen)
+	struct gmac_softc *sc;
+	caddr_t pkt;
+	int totlen;
+{
+	struct mbuf *m;
+	struct mbuf *top, **mp;
+	int len;
+
+	MGETHDR(m, M_DONTWAIT, MT_DATA);
+	if (m == 0)
+		return 0;
+	m->m_pkthdr.rcvif = &sc->sc_if;
+	m->m_pkthdr.len = totlen;
+	len = MHLEN;
+	top = 0;
+	mp = &top;
+
+	while (totlen > 0) {
+		if (top) {
+			MGET(m, M_DONTWAIT, MT_DATA);
+			if (m == 0) {
+				m_freem(top);
+				return 0;
+			}
+			len = MLEN;
+		}
+		if (totlen >= MINCLSIZE) {
+			MCLGET(m, M_DONTWAIT);
+			if ((m->m_flags & M_EXT) == 0) {
+				m_free(m);
+				m_freem(top);
+				return 0;
+			}
+			len = MCLBYTES;
+		}
+		m->m_len = len = min(totlen, len);
+		bcopy(pkt, mtod(m, caddr_t), len);
+		pkt += len;
+		totlen -= len;
+		*mp = m;
+		mp = &m->m_next;
+	}
+
+	return top;
+}
+
+void
+gmac_start(ifp)
+	struct ifnet *ifp;
+{
+	struct gmac_softc *sc = ifp->if_softc;
+	struct mbuf *m;
+	caddr_t buff;
+	int i, tlen;
+	volatile struct gmac_dma *dp;
+
+	if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
+		return;
+
+	for (;;) {
+		if (ifp->if_flags & IFF_OACTIVE)
+			break;
+
+		IF_DEQUEUE(&ifp->if_snd, m);
+		if (m == 0)
+			break;
+
+		ifp->if_flags |= IFF_OACTIVE;
+
+		/* 5 seconds to watch for failing to transmit */
+		ifp->if_timer = 5;
+		ifp->if_opackets++;		/* # of pkts */
+
+		i = sc->sc_txnext;
+		buff = sc->sc_txbuf[i];
+		tlen = gmac_put(sc, buff, m);
+
+		dp = &sc->sc_txlist[i];
+		dp->cmd_hi = 0;
+		dp->address_hi = 0;
+		dp->cmd = htole32(tlen | GMAC_OWN | GMAC_SOP);
+
+		i++;
+		if (i == NTXBUF)
+			i = 0;
+		__asm __volatile ("sync");
+
+		gmac_write_reg(sc, GMAC_TXDMAKICK, i);
+		sc->sc_txnext = i;
+
+#if NBPFILTER > 0
+		/*
+		 * If BPF is listening on this interface, let it see the
+		 * packet before we commit it to the wire.
+		 */
+		if (ifp->if_bpf)
+			bpf_tap(ifp->if_bpf, buff, tlen);
+#endif
+	}
+}
+
+int
+gmac_put(sc, buff, m)
+	struct gmac_softc *sc;
+	caddr_t buff;
+	struct mbuf *m;
+{
+	struct mbuf *n;
+	int len, tlen = 0;
+
+	for (; m; m = n) {
+		len = m->m_len;
+		if (len == 0) {
+			MFREE(m, n);
+			continue;
+		}
+		bcopy(mtod(m, caddr_t), buff, len);
+		buff += len;
+		tlen += len;
+		MFREE(m, n);
+	}
+	if (tlen > 2048)
+		panic("%s: gmac_put packet overflow", sc->sc_dev.dv_xname);
+
+	return tlen;
+}
+
+void
+gmac_reset(sc)
+	struct gmac_softc *sc;
+{
+	int i, s;
+
+	s = splnet();
+
+	gmac_stop_txdma(sc);
+	gmac_stop_rxdma(sc);
+
+	gmac_write_reg(sc, GMAC_SOFTWARERESET, 3);
+	for (i = 10; i > 0; i--) {
+		delay(300000);				/* XXX long delay */
+		if ((gmac_read_reg(sc, GMAC_SOFTWARERESET) & 3) == 0)
+			break;
+	}
+	if (i == 0)
+		printf("%s: reset timeout\n", sc->sc_dev.dv_xname);
+
+	sc->sc_txnext = 0;
+	sc->sc_rxlast = 0;
+	for (i = 0; i < NRXBUF; i++)
+		sc->sc_rxlist[i].cmd = htole32(GMAC_OWN);
+	__asm __volatile ("sync");
+
+	gmac_write_reg(sc, GMAC_TXDMADESCBASEHI, 0);
+	gmac_write_reg(sc, GMAC_TXDMADESCBASELO, vtophys(sc->sc_txlist));
+	gmac_write_reg(sc, GMAC_RXDMADESCBASEHI, 0);
+	gmac_write_reg(sc, GMAC_RXDMADESCBASELO, vtophys(sc->sc_rxlist));
+	gmac_write_reg(sc, GMAC_RXDMAKICK, NRXBUF);
+
+	splx(s);
+}
+
+void
+gmac_stop(sc)
+	struct gmac_softc *sc;
+{
+	struct ifnet *ifp = &sc->sc_if;
+	int s;
+
+	s = splnet();
+
+	untimeout(gmac_mii_tick, sc);
+#ifndef __OenBSD__
+	mii_down(&sc->sc_mii);
+#endif
+
+	gmac_stop_txdma(sc);
+	gmac_stop_rxdma(sc);
+
+	gmac_write_reg(sc, GMAC_INTMASK, 0xffffffff);
+
+	ifp->if_flags &= ~(IFF_UP | IFF_RUNNING);
+	ifp->if_timer = 0;
+
+	splx(s);
+}
+
+void
+gmac_init_mac(sc)
+	struct gmac_softc *sc;
+{
+	int i, tb;
+#ifdef __NetBSD__
+	char *laddr = sc->sc_laddr;
+#else /* !__NetBSD__ */
+	char *laddr = sc->sc_enaddr;
+#endif
+
+	__asm ("mftb %0" : "=r"(tb));
+	gmac_write_reg(sc, GMAC_RANDOMSEED, tb);
+
+	/* init-mii */
+	gmac_write_reg(sc, GMAC_DATAPATHMODE, 4);
+	gmac_mii_writereg(&sc->sc_dev, 0, 0, 0x1000);
+
+	gmac_write_reg(sc, GMAC_TXDMACONFIG, 0xffc00);
+	gmac_write_reg(sc, GMAC_RXDMACONFIG, 0);
+	gmac_write_reg(sc, GMAC_MACPAUSE, 0x1bf0);
+	gmac_write_reg(sc, GMAC_INTERPACKETGAP0, 0);
+	gmac_write_reg(sc, GMAC_INTERPACKETGAP1, 8);
+	gmac_write_reg(sc, GMAC_INTERPACKETGAP2, 4);
+	gmac_write_reg(sc, GMAC_MINFRAMESIZE, ETHER_MIN_LEN);
+	gmac_write_reg(sc, GMAC_MAXFRAMESIZE, ETHER_MAX_LEN);
+	gmac_write_reg(sc, GMAC_PASIZE, 7);
+	gmac_write_reg(sc, GMAC_JAMSIZE, 4);
+	gmac_write_reg(sc, GMAC_ATTEMPTLIMIT,0x10);
+	gmac_write_reg(sc, GMAC_MACCNTLTYPE, 0x8808);
+
+	gmac_write_reg(sc, GMAC_MACADDRESS0, (laddr[4] << 8) | laddr[5]);
+	gmac_write_reg(sc, GMAC_MACADDRESS1, (laddr[2] << 8) | laddr[3]);
+	gmac_write_reg(sc, GMAC_MACADDRESS2, (laddr[0] << 8) | laddr[1]);
+	gmac_write_reg(sc, GMAC_MACADDRESS3, 0);
+	gmac_write_reg(sc, GMAC_MACADDRESS4, 0);
+	gmac_write_reg(sc, GMAC_MACADDRESS5, 0);
+	gmac_write_reg(sc, GMAC_MACADDRESS6, 1);
+	gmac_write_reg(sc, GMAC_MACADDRESS7, 0xc200);
+	gmac_write_reg(sc, GMAC_MACADDRESS8, 0x0180);
+	gmac_write_reg(sc, GMAC_MACADDRFILT0, 0);
+	gmac_write_reg(sc, GMAC_MACADDRFILT1, 0);
+	gmac_write_reg(sc, GMAC_MACADDRFILT2, 0);
+	gmac_write_reg(sc, GMAC_MACADDRFILT2_1MASK, 0);
+	gmac_write_reg(sc, GMAC_MACADDRFILT0MASK, 0);
+
+	for (i = 0; i < 0x6c; i+= 4)
+		gmac_write_reg(sc, GMAC_HASHTABLE0 + i, 0);
+
+	gmac_write_reg(sc, GMAC_SLOTTIME, 0x40);
+
+	/* XXX */
+	gmac_write_reg(sc, GMAC_TXMACCONFIG, 0);
+	gmac_write_reg(sc, GMAC_XIFCONFIG, 5);
+	gmac_write_reg(sc, GMAC_MACCTRLCONFIG, 0);
+}
+
+void
+gmac_init(sc)
+	struct gmac_softc *sc;
+{
+	struct ifnet *ifp = &sc->sc_if;
+	u_int x;
+	int i;
+
+	gmac_stop_txdma(sc);
+	gmac_stop_rxdma(sc);
+
+	gmac_init_mac(sc);
+
+	x = gmac_read_reg(sc, GMAC_RXMACCONFIG);
+	if (ifp->if_flags & IFF_PROMISC)
+		x |= GMAC_RXMAC_PR;
+	else
+		x &= ~GMAC_RXMAC_PR;
+	gmac_write_reg(sc, GMAC_RXMACCONFIG, x);
+
+	gmac_start_txdma(sc);
+	gmac_start_rxdma(sc);
+
+	gmac_write_reg(sc, GMAC_INTMASK, ~(GMAC_INT_TXDONE | GMAC_INT_RXDONE));
+
+	ifp->if_flags |= IFF_RUNNING;
+	ifp->if_flags &= ~IFF_OACTIVE;
+	ifp->if_timer = 0;
+
+	untimeout(gmac_mii_tick, sc);
+	timeout(gmac_mii_tick, sc, 1);
+
+	gmac_start(ifp);
+}
+
+int
+gmac_ioctl(ifp, cmd, data)
+	struct ifnet *ifp;
+	u_long cmd;
+	caddr_t data;
+{
+	struct gmac_softc *sc = ifp->if_softc;
+	struct ifaddr *ifa = (struct ifaddr *)data;
+	struct ifreq *ifr = (struct ifreq *)data;
+	int s, error = 0;
+
+	s = splnet();
+
+	switch (cmd) {
+
+	case SIOCSIFADDR:
+		ifp->if_flags |= IFF_UP;
+
+		switch (ifa->ifa_addr->sa_family) {
+#ifdef INET
+		case AF_INET:
+			gmac_init(sc);
+#ifdef __OpenBSD__
+			arp_ifinit(&sc->arpcom, ifa);
+#else /* !__OpenBSD__ */
+			arp_ifinit(ifp, ifa);
+#endif /* !__OpenBSD__ */
+			break;
+#endif
+#ifdef NS
+		case AF_NS:
+		    {
+			struct ns_addr *ina = &IA_SNS(ifa)->sns_addr;
+
+			if (ns_nullhost(*ina))
+				ina->x_host =
+				    *(union ns_host *)LLADDR(ifp->if_sadl);
+			else {
+				bcopy(ina->x_host.c_host,
+				    LLADDR(ifp->if_sadl),
+				    sizeof(sc->sc_enaddr));
+			}
+			/* Set new address. */
+			gmac_init(sc);
+			break;
+		    }
+#endif
+		default:
+			gmac_init(sc);
+			break;
+		}
+		break;
+
+	case SIOCSIFFLAGS:
+		if ((ifp->if_flags & IFF_UP) == 0 &&
+		    (ifp->if_flags & IFF_RUNNING) != 0) {
+			/*
+			 * If interface is marked down and it is running, then
+			 * stop it.
+			 */
+			gmac_stop(sc);
+			ifp->if_flags &= ~IFF_RUNNING;
+		} else if ((ifp->if_flags & IFF_UP) != 0 &&
+		    (ifp->if_flags & IFF_RUNNING) == 0) {
+			/*
+			 * If interface is marked up and it is stopped, then
+			 * start it.
+			 */
+			gmac_init(sc);
+		} else {
+			/*
+			 * Reset the interface to pick up changes in any other
+			 * flags that affect hardware registers.
+			 */
+			gmac_reset(sc);
+			gmac_init(sc);
+		}
+#ifdef GMAC_DEBUG
+		if (ifp->if_flags & IFF_DEBUG)
+			sc->sc_flags |= GMAC_DEBUGFLAG;
+#endif
+		break;
+
+	case SIOCADDMULTI:
+	case SIOCDELMULTI:
+#if defined(__OpenBSD__)
+		error = (cmd == SIOCADDMULTI) ?
+		    ether_addmulti(ifr, &sc->arpcom) :
+		    ether_delmulti(ifr, &sc->arpcom);
+#else
+		error = (cmd == SIOCADDMULTI) ?
+		    ether_addmulti(ifr, &sc->sc_ethercom) :
+		    ether_delmulti(ifr, &sc->sc_ethercom);
+#endif
+
+		if (error == ENETRESET) {
+			/*
+			 * Multicast list has changed; set the hardware filter
+			 * accordingly.
+			 */
+			gmac_init(sc);
+			/* gmac_setladrf(sc); */
+			error = 0;
+		}
+		break;
+
+	case SIOCGIFMEDIA:
+	case SIOCSIFMEDIA:
+		error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd);
+		break;
+
+	default:
+		error = EINVAL;
+	}
+
+	splx(s);
+	return error;
+}
+
+void
+gmac_watchdog(ifp)
+	struct ifnet *ifp;
+{
+	struct gmac_softc *sc = ifp->if_softc;
+
+	printf("%s: device timeout\n", ifp->if_xname);
+	ifp->if_oerrors++;
+
+	gmac_reset(sc);
+	gmac_init(sc);
+}
+
+int
+gmac_mediachange(ifp)
+	struct ifnet *ifp;
+{
+	struct gmac_softc *sc = ifp->if_softc;
+
+	return mii_mediachg(&sc->sc_mii);
+}
+
+void
+gmac_mediastatus(ifp, ifmr)
+	struct ifnet *ifp;
+	struct ifmediareq *ifmr;
+{
+	struct gmac_softc *sc = ifp->if_softc;
+
+	mii_pollstat(&sc->sc_mii);
+
+	ifmr->ifm_status = sc->sc_mii.mii_media_status;
+	ifmr->ifm_active = sc->sc_mii.mii_media_active;
+}
+
+int
+gmac_mii_readreg(dev, phy, reg)
+	struct device *dev;
+	int phy, reg;
+{
+	struct gmac_softc *sc = (void *)dev;
+	int i;
+
+	gmac_write_reg(sc, GMAC_MIFFRAMEOUTPUT,
+		0x60020000 | (phy << 23) | (reg << 18));
+
+	for (i = 1000; i >= 0; i -= 10) {
+		if (gmac_read_reg(sc, GMAC_MIFFRAMEOUTPUT) & 0x10000)
+			break;
+		delay(10);
+	}
+	if (i < 0) {
+		printf("%s: gmac_mii_readreg: timeout\n", sc->sc_dev.dv_xname);
+		return 0;
+	}
+
+	return gmac_read_reg(sc, GMAC_MIFFRAMEOUTPUT) & 0xffff;
+}
+
+void
+gmac_mii_writereg(dev, phy, reg, val)
+	struct device *dev;
+	int phy, reg, val;
+{
+	struct gmac_softc *sc = (void *)dev;
+	int i;
+
+	gmac_write_reg(sc, GMAC_MIFFRAMEOUTPUT,
+		0x50020000 | (phy << 23) | (reg << 18) | (val & 0xffff));
+
+	for (i = 1000; i >= 0; i -= 10) {
+		if (gmac_read_reg(sc, GMAC_MIFFRAMEOUTPUT) & 0x10000)
+			break;
+		delay(10);
+	}
+	if (i < 0)
+		printf("%s: gmac_mii_writereg: timeout\n", sc->sc_dev.dv_xname);
+}
+
+void
+gmac_mii_statchg(dev)
+	struct device *dev;
+{
+	struct gmac_softc *sc = (void *)dev;
+
+	gmac_stop_txdma(sc);
+	gmac_stop_rxdma(sc);
+
+	if (IFM_OPTIONS(sc->sc_mii.mii_media_active) & IFM_FDX) {
+		gmac_write_reg(sc, GMAC_TXMACCONFIG, 6);
+		gmac_write_reg(sc, GMAC_XIFCONFIG, 1);
+	} else {
+		gmac_write_reg(sc, GMAC_TXMACCONFIG, 0);
+		gmac_write_reg(sc, GMAC_XIFCONFIG, 5);
+	}
+
+	if (0)	/* g-bit? */
+		gmac_write_reg(sc, GMAC_MACCTRLCONFIG, 3);
+	else
+		gmac_write_reg(sc, GMAC_MACCTRLCONFIG, 0);
+
+	gmac_start_txdma(sc);
+	gmac_start_rxdma(sc);
+}
+
+void
+gmac_mii_tick(v)
+	void *v;
+{
+	struct gmac_softc *sc = v;
+	int s;
+
+	s = splnet();
+	mii_tick(&sc->sc_mii);
+	splx(s);
+
+	timeout(gmac_mii_tick, sc, hz);
+}