lmc driver; ported by chris@dqc.org

8 files changed, 3974 insertions, 1 deletions

diff --git a/sys/dev/pci/files.pci b/sys/dev/pci/files.pci
index ab0064d5db6..6b005ca9645 100644
--- a/sys/dev/pci/files.pci
+++ b/sys/dev/pci/files.pci
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.pci,v 1.38 1999/04/28 23:20:59 alex Exp $
+#	$OpenBSD: files.pci,v 1.39 1999/07/01 23:10:39 deraadt Exp $
 #	$NetBSD: files.pci,v 1.20 1996/09/24 17:47:15 christos Exp $
 #
 # Config file and device description for machine-independent PCI code.
@@ -93,6 +93,14 @@ file	dev/pci/ppb.c			ppb
 attach	cy at pci with cy_pci
 file	dev/pci/cy_pci.c		cy_pci
 
+# Lan Media Corporation T1/HSSI/DS3 adapter
+device	lmc: ifnet, sppp
+attach	lmc at pci
+file	dev/pci/if_lmc.c		lmc
+file	dev/pci/if_lmc_common.c		lmc
+file	dev/pci/if_lmc_media.c		lmc
+file	dev/pci/if_lmc_obsd.c		lmc
+
 # Intel EtherExpress PRO 10/100B
 device	fxp: ether, ifnet, mii, ifmedia
 attach	fxp at pci 
diff --git a/sys/dev/pci/if_lmc.c b/sys/dev/pci/if_lmc.c
new file mode 100644
index 00000000000..f9f10794ca9
--- /dev/null
+++ b/sys/dev/pci/if_lmc.c
@@ -0,0 +1,1393 @@
+/*	$NetBSD: if_lmc.c,v 1.1 1999/03/25 03:32:43 explorer Exp $	*/
+
+/*-
+ * Copyright (c) 1997-1999 LAN Media Corporation (LMC)
+ * All rights reserved.  www.lanmedia.com
+ *
+ * This code is written by Michael Graff <graff@vix.com> for LMC.
+ * The code is derived from permitted modifications to software created
+ * by Matt Thomas (matt@3am-software.com).
+ *
+ * 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 marketing or advertising materials mentioning features or
+ *    use of this software must display the following acknowledgement:
+ *      This product includes software developed by LAN Media Corporation
+ *      and its contributors.
+ * 4. Neither the name of LAN Media Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY LAN MEDIA CORPORATION 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 THE FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+/*-
+ * Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough 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.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/errno.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+/*#include <sys/proc.h>	only for declaration of wakeup() used by vm.h */
+#if defined(__FreeBSD__)
+#include <machine/clock.h>
+#elif defined(__bsdi__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <sys/device.h>
+#endif
+
+#if defined(__OpenBSD__)
+#include <dev/pci/pcidevs.h>
+#endif
+
+#if defined(__NetBSD__)
+#include <dev/pci/pcidevs.h>
+#include "rnd.h"
+#if NRND > 0
+#include <sys/rnd.h>
+#endif
+#endif
+
+#include <net/if.h>
+#include <net/if_types.h>
+#include <net/if_dl.h>
+#include <net/netisr.h>
+
+#include "bpfilter.h"
+#if NBPFILTER > 0
+#include <net/bpf.h>
+#include <net/bpfdesc.h>
+#endif
+
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+#include <vm/vm_kern.h>
+
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <net/if_sppp.h>
+#endif
+
+#if defined(__bsdi__)
+#if INET
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#endif
+
+#include <net/netisr.h>
+#include <net/if.h>
+#include <net/netisr.h>
+#include <net/if_types.h>
+#include <net/if_p2p.h>
+#include <net/if_c_hdlc.h>
+#endif
+
+#if defined(__FreeBSD__)
+#include <vm/pmap.h>
+#include <pci.h>
+#if NPCI > 0
+#include <pci/pcivar.h>
+#include <pci/dc21040reg.h>
+#define INCLUDE_PATH_PREFIX "pci/"
+#endif
+#endif /* __FreeBSD__ */
+
+#if defined(__bsdi__)
+#include <i386/pci/ic/dc21040.h>
+#include <i386/isa/isa.h>
+#include <i386/isa/icu.h>
+#include <i386/isa/dma.h>
+#include <i386/isa/isavar.h>
+#include <i386/pci/pci.h>
+
+#define	INCLUDE_PATH_PREFIX	"i386/pci/"
+#endif /* __bsdi__ */
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+#include <machine/bus.h>
+#if defined(__alpha__) && defined(__NetBSD__)
+#include <machine/intr.h>
+#endif
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+#include <dev/ic/dc21040reg.h>
+#define	INCLUDE_PATH_PREFIX	"dev/pci/"
+#endif /* __NetBSD__ */
+
+#if defined(__OpenBSD__)
+#define d_length1 u.bd_length1
+#define d_length2 u.bd_length2
+#define d_flag u.bd_flag
+#endif
+
+/*
+ * Sigh.  Every OS puts these in different places.  NetBSD and FreeBSD use
+ * a C preprocessor that allows this hack, but BSDI does not.  Grr.
+ */
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+#include INCLUDE_PATH_PREFIX "if_lmc_types.h"
+#include INCLUDE_PATH_PREFIX "if_lmcioctl.h"
+#include INCLUDE_PATH_PREFIX "if_lmcvar.h"
+#else /* BSDI */
+#include "i386/pci/if_lmctypes.h"
+#include "i386/pci/if_lmcioctl.h"
+#include "i386/pci/if_lmcvar.h"
+#endif
+
+/*
+ * This module supports
+ *	the DEC 21140A pass 2.2 PCI Fast Ethernet Controller.
+ */
+static ifnet_ret_t lmc_ifstart_one(struct ifnet *ifp);
+static ifnet_ret_t lmc_ifstart(struct ifnet *ifp);
+static struct mbuf *lmc_txput(lmc_softc_t * const sc, struct mbuf *m);
+static void lmc_rx_intr(lmc_softc_t * const sc);
+
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+static void lmc_watchdog(struct ifnet *ifp);
+#endif
+#if defined(__bsdi__)
+static int lmc_watchdog(int);
+#endif
+static void lmc_ifup(lmc_softc_t * const sc);
+static void lmc_ifdown(lmc_softc_t * const sc);
+
+
+/*
+ * Code the read the SROM and MII bit streams (I2C)
+ */
+static inline void
+lmc_delay_300ns(lmc_softc_t * const sc)
+{
+	int idx;
+	for (idx = (300 / 33) + 1; idx > 0; idx--)
+		(void)LMC_CSR_READ(sc, csr_busmode);
+}
+
+
+#define EMIT    \
+do { \
+	LMC_CSR_WRITE(sc, csr_srom_mii, csr); \
+	lmc_delay_300ns(sc); \
+} while (0)
+
+static inline void
+lmc_srom_idle(lmc_softc_t * const sc)
+{
+	unsigned bit, csr;
+    
+	csr  = SROMSEL ; EMIT;
+	csr  = SROMSEL | SROMRD; EMIT;  
+	csr ^= SROMCS; EMIT;
+	csr ^= SROMCLKON; EMIT;
+
+	/*
+	 * Write 25 cycles of 0 which will force the SROM to be idle.
+	 */
+	for (bit = 3 + SROM_BITWIDTH + 16; bit > 0; bit--) {
+		csr ^= SROMCLKOFF; EMIT;    /* clock low; data not valid */
+		csr ^= SROMCLKON; EMIT;     /* clock high; data valid */
+	}
+	csr ^= SROMCLKOFF; EMIT;
+	csr ^= SROMCS; EMIT;
+	csr  = 0; EMIT;
+}
+
+     
+static void
+lmc_srom_read(lmc_softc_t * const sc)
+{   
+	unsigned idx; 
+	const unsigned bitwidth = SROM_BITWIDTH;
+	const unsigned cmdmask = (SROMCMD_RD << bitwidth);
+	const unsigned msb = 1 << (bitwidth + 3 - 1);
+	unsigned lastidx = (1 << bitwidth) - 1;
+
+	lmc_srom_idle(sc);
+
+	for (idx = 0; idx <= lastidx; idx++) {
+		unsigned lastbit, data, bits, bit, csr;
+		csr  = SROMSEL ;	        EMIT;
+		csr  = SROMSEL | SROMRD;        EMIT;
+		csr ^= SROMCSON;                EMIT;
+		csr ^=            SROMCLKON;    EMIT;
+    
+		lastbit = 0;
+		for (bits = idx|cmdmask, bit = bitwidth + 3
+			     ; bit > 0
+			     ; bit--, bits <<= 1) {
+			const unsigned thisbit = bits & msb;
+			csr ^= SROMCLKOFF; EMIT;    /* clock L data invalid */
+			if (thisbit != lastbit) {
+				csr ^= SROMDOUT; EMIT;/* clock L invert data */
+			} else {
+				EMIT;
+			}
+			csr ^= SROMCLKON; EMIT;     /* clock H data valid */
+			lastbit = thisbit;
+		}
+		csr ^= SROMCLKOFF; EMIT;
+
+		for (data = 0, bits = 0; bits < 16; bits++) {
+			data <<= 1;
+			csr ^= SROMCLKON; EMIT;     /* clock H data valid */ 
+			data |= LMC_CSR_READ(sc, csr_srom_mii) & SROMDIN ? 1 : 0;
+			csr ^= SROMCLKOFF; EMIT;    /* clock L data invalid */
+		}
+		sc->lmc_rombuf[idx*2] = data & 0xFF;
+		sc->lmc_rombuf[idx*2+1] = data >> 8;
+		csr  = SROMSEL | SROMRD; EMIT;
+		csr  = 0; EMIT;
+	}
+	lmc_srom_idle(sc);
+}
+
+#define MII_EMIT    do { LMC_CSR_WRITE(sc, csr_srom_mii, csr); lmc_delay_300ns(sc); } while (0)
+
+static inline void
+lmc_mii_writebits(lmc_softc_t * const sc, unsigned data, unsigned bits)
+{
+    unsigned msb = 1 << (bits - 1);
+    unsigned csr = LMC_CSR_READ(sc, csr_srom_mii) & (MII_RD|MII_DOUT|MII_CLK);
+    unsigned lastbit = (csr & MII_DOUT) ? msb : 0;
+
+    csr |= MII_WR; MII_EMIT;  		/* clock low; assert write */
+
+    for (; bits > 0; bits--, data <<= 1) {
+	const unsigned thisbit = data & msb;
+	if (thisbit != lastbit) {
+	    csr ^= MII_DOUT; MII_EMIT;  /* clock low; invert data */
+	}
+	csr ^= MII_CLKON; MII_EMIT;     /* clock high; data valid */
+	lastbit = thisbit;
+	csr ^= MII_CLKOFF; MII_EMIT;    /* clock low; data not valid */
+    }
+}
+
+static void
+lmc_mii_turnaround(lmc_softc_t * const sc, u_int32_t cmd)
+{
+    u_int32_t csr;
+
+    csr = LMC_CSR_READ(sc, csr_srom_mii) & (MII_RD|MII_DOUT|MII_CLK);
+    if (cmd == MII_WRCMD) {
+	csr |= MII_DOUT; MII_EMIT;	/* clock low; change data */
+	csr ^= MII_CLKON; MII_EMIT;	/* clock high; data valid */
+	csr ^= MII_CLKOFF; MII_EMIT;	/* clock low; data not valid */
+	csr ^= MII_DOUT; MII_EMIT;	/* clock low; change data */
+    } else {
+	csr |= MII_RD; MII_EMIT;	/* clock low; switch to read */
+    }
+    csr ^= MII_CLKON; MII_EMIT;		/* clock high; data valid */
+    csr ^= MII_CLKOFF; MII_EMIT;	/* clock low; data not valid */
+}
+
+static u_int32_t
+lmc_mii_readbits(lmc_softc_t * const sc)
+{
+    u_int32_t data;
+    u_int32_t csr = LMC_CSR_READ(sc, csr_srom_mii) & (MII_RD|MII_DOUT|MII_CLK);
+    int idx;
+
+    for (idx = 0, data = 0; idx < 16; idx++) {
+	data <<= 1;	/* this is NOOP on the first pass through */
+	csr ^= MII_CLKON; MII_EMIT;	/* clock high; data valid */
+	if (LMC_CSR_READ(sc, csr_srom_mii) & MII_DIN)
+	    data |= 1;
+	csr ^= MII_CLKOFF; MII_EMIT;	/* clock low; data not valid */
+    }
+    csr ^= MII_RD; MII_EMIT;		/* clock low; turn off read */
+
+    return data;
+}
+
+u_int32_t
+lmc_mii_readreg(lmc_softc_t * const sc, u_int32_t devaddr, u_int32_t regno)
+{
+    u_int32_t csr = LMC_CSR_READ(sc, csr_srom_mii) & (MII_RD|MII_DOUT|MII_CLK);
+    u_int32_t data;
+
+    csr &= ~(MII_RD|MII_CLK); MII_EMIT;
+    lmc_mii_writebits(sc, MII_PREAMBLE, 32);
+    lmc_mii_writebits(sc, MII_RDCMD, 8);
+    lmc_mii_writebits(sc, devaddr, 5);
+    lmc_mii_writebits(sc, regno, 5);
+    lmc_mii_turnaround(sc, MII_RDCMD);
+
+    data = lmc_mii_readbits(sc);
+    return (data);
+}
+
+void
+lmc_mii_writereg(lmc_softc_t * const sc, u_int32_t devaddr,
+		   u_int32_t regno, u_int32_t data)
+{
+    u_int32_t csr;
+
+    csr = LMC_CSR_READ(sc, csr_srom_mii) & (MII_RD|MII_DOUT|MII_CLK);
+    csr &= ~(MII_RD|MII_CLK); MII_EMIT;
+    lmc_mii_writebits(sc, MII_PREAMBLE, 32);
+    lmc_mii_writebits(sc, MII_WRCMD, 8);
+    lmc_mii_writebits(sc, devaddr, 5);
+    lmc_mii_writebits(sc, regno, 5);
+    lmc_mii_turnaround(sc, MII_WRCMD);
+    lmc_mii_writebits(sc, data, 16);
+}
+
+int
+lmc_read_macaddr(lmc_softc_t * const sc)
+{
+	lmc_srom_read(sc);
+
+	bcopy(sc->lmc_rombuf + 20, sc->lmc_enaddr, 6);
+
+	return 0;
+}
+
+/*
+ * Check to make certain there is a signal from the modem, and flicker
+ * lights as needed.
+ */
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+static void
+lmc_watchdog(struct ifnet *ifp)
+#endif
+#if defined(__bsdi__)
+static int
+lmc_watchdog(int unit)
+#endif
+{
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+	lmc_softc_t * const sc = LMC_IFP_TO_SOFTC(ifp);
+#endif
+#if defined(__bsdi__)
+	lmc_softc_t * const sc = LMC_UNIT_TO_SOFTC(unit);
+	struct ifnet *ifp = &sc->lmc_if;
+#endif
+	int state;
+	u_int32_t ostatus;
+	u_int32_t link_status;
+	u_int32_t ticks;
+
+	state = 0;
+
+	link_status = sc->lmc_media->get_link_status(sc);
+	ostatus = ((sc->lmc_flags & LMC_MODEMOK) == LMC_MODEMOK);
+
+	/*
+	 * hardware level link lost, but the interface is marked as up.
+	 * Mark it as down.
+	 */
+        if (link_status == 0 && ostatus) {
+		printf(LMC_PRINTF_FMT ": physical link down\n",
+		       LMC_PRINTF_ARGS);
+		sc->lmc_flags &= ~LMC_MODEMOK;
+		lmc_led_off(sc, LMC_MII16_LED1);
+	}
+
+	/*
+	 * hardware link is up, but the interface is marked as down.
+	 * Bring it back up again.
+	 */
+	if (link_status != 0 && !ostatus) {
+		printf(LMC_PRINTF_FMT ": physical link up\n",
+		       LMC_PRINTF_ARGS);
+		if (sc->lmc_flags & LMC_IFUP)
+			lmc_ifup(sc);
+		sc->lmc_flags |= LMC_MODEMOK;
+		lmc_led_on(sc, LMC_MII16_LED1); 
+		return;
+	}
+
+	/*
+	 * remember the timer value
+	 */
+	ticks = LMC_CSR_READ(sc, csr_gp_timer);
+	LMC_CSR_WRITE(sc, csr_gp_timer, 0xffffffffUL);
+	sc->ictl.ticks = 0x0000ffff - (ticks & 0x0000ffff);
+
+	ifp->if_timer = 1;
+}
+
+/*
+ * Mark the interface as "up" and enable TX/RX and TX/RX interrupts.
+ * This also does a full software reset.
+ */
+static void
+lmc_ifup(lmc_softc_t * const sc)
+{
+	sc->lmc_if.if_timer = 0;
+
+	lmc_dec_reset(sc);
+	lmc_reset(sc);
+
+	sc->lmc_media->set_link_status(sc, 1);
+	sc->lmc_media->set_status(sc, NULL);
+
+	sc->lmc_flags |= LMC_IFUP;
+
+	lmc_led_on(sc, LMC_MII16_LED1);
+
+	/*
+	 * select what interrupts we want to get
+	 */
+	sc->lmc_intrmask |= (TULIP_STS_NORMALINTR
+			       | TULIP_STS_RXINTR
+			       | TULIP_STS_TXINTR
+			       | TULIP_STS_ABNRMLINTR
+			       | TULIP_STS_SYSERROR
+			       | TULIP_STS_TXSTOPPED
+			       | TULIP_STS_TXUNDERFLOW
+			       | TULIP_STS_RXSTOPPED
+			       );
+	LMC_CSR_WRITE(sc, csr_intr, sc->lmc_intrmask);
+
+	sc->lmc_cmdmode |= TULIP_CMD_TXRUN;
+	sc->lmc_cmdmode |= TULIP_CMD_RXRUN;
+	LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode);
+
+	sc->lmc_if.if_timer = 1;
+}
+
+/*
+ * Mark the interface as "down" and disable TX/RX and TX/RX interrupts.
+ * This is done by performing a full reset on the interface.
+ */
+static void
+lmc_ifdown(lmc_softc_t * const sc)
+{
+	sc->lmc_if.if_timer = 0;
+	sc->lmc_flags &= ~LMC_IFUP;
+
+	sc->lmc_media->set_link_status(sc, 0);
+	lmc_led_off(sc, LMC_MII16_LED1);
+
+	lmc_dec_reset(sc);
+	lmc_reset(sc);
+	sc->lmc_media->set_status(sc, NULL);
+}
+
+static void
+lmc_rx_intr(lmc_softc_t * const sc)
+{
+	lmc_ringinfo_t * const ri = &sc->lmc_rxinfo;
+	struct ifnet * const ifp = &sc->lmc_if;
+	int fillok = 1;
+
+	sc->lmc_rxtick++;
+
+	for (;;) {
+		tulip_desc_t *eop = ri->ri_nextin;
+		int total_len = 0, last_offset = 0;
+		struct mbuf *ms = NULL, *me = NULL;
+		int accept = 0;
+
+		if (fillok && sc->lmc_rxq.ifq_len < LMC_RXQ_TARGET)
+			goto queue_mbuf;
+
+		/*
+		 * If the TULIP has no descriptors, there can't be any receive
+		 * descriptors to process.
+		 */
+		if (eop == ri->ri_nextout)
+			break;
+	    
+		/*
+		 * 90% of the packets will fit in one descriptor.  So we
+		 * optimize for that case.
+		 */
+		if ((((volatile tulip_desc_t *) eop)->d_status & (TULIP_DSTS_OWNER|TULIP_DSTS_RxFIRSTDESC|TULIP_DSTS_RxLASTDESC)) == (TULIP_DSTS_RxFIRSTDESC|TULIP_DSTS_RxLASTDESC)) {
+			IF_DEQUEUE(&sc->lmc_rxq, ms);
+			me = ms;
+		} else {
+			/*
+			 * If still owned by the TULIP, don't touch it.
+			 */
+			if (((volatile tulip_desc_t *)eop)->d_status & TULIP_DSTS_OWNER)
+				break;
+
+			/*
+			 * It is possible (though improbable unless the
+			 * BIG_PACKET support is enabled or MCLBYTES < 1518)
+			 * for a received packet to cross more than one
+			 * receive descriptor.
+			 */
+			while ((((volatile tulip_desc_t *) eop)->d_status & TULIP_DSTS_RxLASTDESC) == 0) {
+				if (++eop == ri->ri_last)
+					eop = ri->ri_first;
+				if (eop == ri->ri_nextout || ((((volatile tulip_desc_t *) eop)->d_status & TULIP_DSTS_OWNER))) {
+					return;
+				}
+				total_len++;
+			}
+
+			/*
+			 * Dequeue the first buffer for the start of the
+			 * packet.  Hopefully this will be the only one we
+			 * need to dequeue.  However, if the packet consumed
+			 * multiple descriptors, then we need to dequeue
+			 * those buffers and chain to the starting mbuf.
+			 * All buffers but the last buffer have the same
+			 * length so we can set that now. (we add to
+			 * last_offset instead of multiplying since we
+			 * normally won't go into the loop and thereby
+			 * saving a ourselves from doing a multiplication
+			 * by 0 in the normal case).
+			 */
+			IF_DEQUEUE(&sc->lmc_rxq, ms);
+			for (me = ms; total_len > 0; total_len--) {
+				me->m_len = LMC_RX_BUFLEN;
+				last_offset += LMC_RX_BUFLEN;
+				IF_DEQUEUE(&sc->lmc_rxq, me->m_next);
+				me = me->m_next;
+			}
+		}
+
+		/*
+		 *  Now get the size of received packet (minus the CRC).
+		 */
+		total_len = ((eop->d_status >> 16) & 0x7FFF);
+		if (sc->ictl.crc_length == 16)
+			total_len -= 2;
+		else
+			total_len -= 4;
+
+		if ((sc->lmc_flags & LMC_RXIGNORE) == 0
+		    && ((eop->d_status & LMC_DSTS_ERRSUM) == 0
+#ifdef BIG_PACKET
+			|| (total_len <= sc->lmc_if.if_mtu + PPP_HEADER_LEN
+			    && (eop->d_status & TULIP_DSTS_RxOVERFLOW) == 0)
+#endif
+			)) {
+			me->m_len = total_len - last_offset;
+#if NBPFILTER > 0
+			if (sc->lmc_bpf != NULL) {
+				if (me == ms)
+					LMC_BPF_TAP(sc, mtod(ms, caddr_t), total_len);
+				else
+					LMC_BPF_MTAP(sc, ms);
+			}
+#endif
+			sc->lmc_flags |= LMC_RXACT;
+			accept = 1;
+		} else {
+			ifp->if_ierrors++;
+			if (eop->d_status & TULIP_DSTS_RxOVERFLOW) {
+				sc->lmc_dot3stats.dot3StatsInternalMacReceiveErrors++;
+			}
+		}
+
+		ifp->if_ipackets++;
+		if (++eop == ri->ri_last)
+			eop = ri->ri_first;
+		ri->ri_nextin = eop;
+
+	queue_mbuf:
+		/*
+		 * Either we are priming the TULIP with mbufs (m == NULL)
+		 * or we are about to accept an mbuf for the upper layers
+		 * so we need to allocate an mbuf to replace it.  If we
+		 * can't replace it, send up it anyways.  This may cause
+		 * us to drop packets in the future but that's better than
+		 * being caught in livelock.
+		 *
+		 * Note that if this packet crossed multiple descriptors
+		 * we don't even try to reallocate all the mbufs here.
+		 * Instead we rely on the test of the beginning of
+		 * the loop to refill for the extra consumed mbufs.
+		 */
+		if (accept || ms == NULL) {
+			struct mbuf *m0;
+			MGETHDR(m0, M_DONTWAIT, MT_DATA);
+			if (m0 != NULL) {
+				MCLGET(m0, M_DONTWAIT);
+				if ((m0->m_flags & M_EXT) == 0) {
+					m_freem(m0);
+					m0 = NULL;
+				}
+			}
+			if (accept) {
+				ms->m_pkthdr.len = total_len;
+				ms->m_pkthdr.rcvif = ifp;
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+				sppp_input(ifp, ms);
+#endif
+#if defined(__bsdi__)
+				sc->lmc_p2pcom.p2p_input(&sc->lmc_p2pcom, ms);
+#endif
+			}
+			ms = m0;
+		}
+		if (ms == NULL) {
+			/*
+			 * Couldn't allocate a new buffer.  Don't bother 
+			 * trying to replenish the receive queue.
+			 */
+			fillok = 0;
+			sc->lmc_flags |= LMC_RXBUFSLOW;
+			continue;
+		}
+		/*
+		 * Now give the buffer(s) to the TULIP and save in our
+		 * receive queue.
+		 */
+		do {
+			ri->ri_nextout->d_length1 = LMC_RX_BUFLEN;
+			ri->ri_nextout->d_addr1 = LMC_KVATOPHYS(sc, mtod(ms, caddr_t));
+			ri->ri_nextout->d_status = TULIP_DSTS_OWNER;
+			if (++ri->ri_nextout == ri->ri_last)
+				ri->ri_nextout = ri->ri_first;
+			me = ms->m_next;
+			ms->m_next = NULL;
+			IF_ENQUEUE(&sc->lmc_rxq, ms);
+		} while ((ms = me) != NULL);
+
+		if (sc->lmc_rxq.ifq_len >= LMC_RXQ_TARGET)
+			sc->lmc_flags &= ~LMC_RXBUFSLOW;
+	}
+}
+
+static int
+lmc_tx_intr(lmc_softc_t * const sc)
+{
+    lmc_ringinfo_t * const ri = &sc->lmc_txinfo;
+    struct mbuf *m;
+    int xmits = 0;
+    int descs = 0;
+
+    sc->lmc_txtick++;
+
+    while (ri->ri_free < ri->ri_max) {
+#ifdef __OpenBSD__
+        u_int32_t duh_flag;
+#else
+	u_int32_t d_flag;
+#endif
+
+	if (((volatile tulip_desc_t *) ri->ri_nextin)->d_status & TULIP_DSTS_OWNER)
+	    break;
+
+#ifdef __OpenBSD__
+        duh_flag = ri->ri_nextin->d_flag;
+	if (duh_flag & TULIP_DFLAG_TxLASTSEG) {
+#else
+	d_flag = ri->ri_nextin->d_flag;
+	if (d_flag & TULIP_DFLAG_TxLASTSEG) {
+#endif
+		const u_int32_t d_status = ri->ri_nextin->d_status;
+		IF_DEQUEUE(&sc->lmc_txq, m);
+		if (m != NULL) {
+#if NBPFILTER > 0
+		    if (sc->lmc_bpf != NULL)
+			LMC_BPF_MTAP(sc, m);
+#endif
+		    m_freem(m);
+#if defined(LMC_DEBUG)
+		} else {
+		    printf(LMC_PRINTF_FMT ": tx_intr: failed to dequeue mbuf?!?\n", LMC_PRINTF_ARGS);
+#endif
+		}
+		    xmits++;
+		    if (d_status & LMC_DSTS_ERRSUM) {
+			sc->lmc_if.if_oerrors++;
+			if (d_status & TULIP_DSTS_TxUNDERFLOW)
+			    sc->lmc_dot3stats.dot3StatsInternalTransmitUnderflows++;
+		    } else {
+			if (d_status & TULIP_DSTS_TxDEFERRED)
+			    sc->lmc_dot3stats.dot3StatsDeferredTransmissions++;
+		    }
+	}
+
+	if (++ri->ri_nextin == ri->ri_last)
+	    ri->ri_nextin = ri->ri_first;
+
+	ri->ri_free++;
+	descs++;
+	sc->lmc_if.if_flags &= ~IFF_OACTIVE;
+    }
+    /*
+     * If nothing left to transmit, disable the timer.
+     * Else if progress, reset the timer back to 2 ticks.
+     */
+    sc->lmc_if.if_opackets += xmits;
+
+    return descs;
+}
+
+static void
+lmc_print_abnormal_interrupt (lmc_softc_t * const sc, u_int32_t csr)
+{
+	printf(LMC_PRINTF_FMT ": Abnormal interrupt\n", LMC_PRINTF_ARGS);
+}
+
+static void
+lmc_intr_handler(lmc_softc_t * const sc, int *progress_p)
+{
+    u_int32_t csr;
+
+    while ((csr = LMC_CSR_READ(sc, csr_status)) & sc->lmc_intrmask) {
+
+#if defined(__NetBSD__)
+#if NRND > 0
+	    rnd_add_uint32(&sc->lmc_rndsource, csr);
+#endif
+#endif
+
+	*progress_p = 1;
+	LMC_CSR_WRITE(sc, csr_status, csr);
+
+	if (csr & TULIP_STS_SYSERROR) {
+	    sc->lmc_last_system_error = (csr & TULIP_STS_ERRORMASK) >> TULIP_STS_ERR_SHIFT;
+	    if (sc->lmc_flags & LMC_NOMESSAGES) {
+		sc->lmc_flags |= LMC_SYSTEMERROR;
+	    } else {
+		printf(LMC_PRINTF_FMT ": system error: %s\n",
+		       LMC_PRINTF_ARGS,
+		       lmc_system_errors[sc->lmc_last_system_error]);
+	    }
+	    sc->lmc_flags |= LMC_NEEDRESET;
+	    sc->lmc_system_errors++;
+	    break;
+	}
+	if (csr & (TULIP_STS_RXINTR | TULIP_STS_RXNOBUF)) {
+	    u_int32_t misses = LMC_CSR_READ(sc, csr_missed_frames);
+	    if (csr & TULIP_STS_RXNOBUF)
+		sc->lmc_dot3stats.dot3StatsMissedFrames += misses & 0xFFFF;
+	    /*
+	     * Pass 2.[012] of the 21140A-A[CDE] may hang and/or corrupt data
+	     * on receive overflows.
+	     */
+	   if ((misses & 0x0FFE0000) && (sc->lmc_features & LMC_HAVE_RXBADOVRFLW)) {
+		sc->lmc_dot3stats.dot3StatsInternalMacReceiveErrors++;
+		/*
+		 * Stop the receiver process and spin until it's stopped.
+		 * Tell rx_intr to drop the packets it dequeues.
+		 */
+		LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode & ~TULIP_CMD_RXRUN);
+		while ((LMC_CSR_READ(sc, csr_status) & TULIP_STS_RXSTOPPED) == 0)
+		    ;
+		LMC_CSR_WRITE(sc, csr_status, TULIP_STS_RXSTOPPED);
+		sc->lmc_flags |= LMC_RXIGNORE;
+	    }
+	    lmc_rx_intr(sc);
+	    if (sc->lmc_flags & LMC_RXIGNORE) {
+		/*
+		 * Restart the receiver.
+		 */
+		sc->lmc_flags &= ~LMC_RXIGNORE;
+		LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode);
+	    }
+	}
+	if (csr & TULIP_STS_ABNRMLINTR) {
+	    u_int32_t tmp = csr & sc->lmc_intrmask
+		& ~(TULIP_STS_NORMALINTR|TULIP_STS_ABNRMLINTR);
+	    if (csr & TULIP_STS_TXUNDERFLOW) {
+		if ((sc->lmc_cmdmode & TULIP_CMD_THRESHOLDCTL) != TULIP_CMD_THRSHLD160) {
+		    sc->lmc_cmdmode += TULIP_CMD_THRSHLD96;
+		    sc->lmc_flags |= LMC_NEWTXTHRESH;
+		} else if (sc->lmc_features & LMC_HAVE_STOREFWD) {
+		    sc->lmc_cmdmode |= TULIP_CMD_STOREFWD;
+		    sc->lmc_flags |= LMC_NEWTXTHRESH;
+		}
+	    }
+	    if (sc->lmc_flags & LMC_NOMESSAGES) {
+		sc->lmc_statusbits |= tmp;
+	    } else {
+		lmc_print_abnormal_interrupt(sc, tmp);
+		sc->lmc_flags |= LMC_NOMESSAGES;
+	    }
+	    LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode);
+	}
+
+	if (csr & TULIP_STS_TXINTR)
+		lmc_tx_intr(sc);
+
+	if (sc->lmc_flags & LMC_WANTTXSTART)
+	    lmc_ifstart(&sc->lmc_if);
+    }
+}
+
+lmc_intrfunc_t
+lmc_intr_normal(void *arg)
+{
+	lmc_softc_t * sc = (lmc_softc_t *) arg;
+	int progress = 0;
+
+	lmc_intr_handler(sc, &progress);
+
+#if !defined(LMC_VOID_INTRFUNC)
+	return progress;
+#endif
+}
+
+static struct mbuf *
+lmc_mbuf_compress(struct mbuf *m)
+{
+	struct mbuf *m0;
+#if MCLBYTES >= LMC_MTU + PPP_HEADER_LEN && !defined(BIG_PACKET)
+	MGETHDR(m0, M_DONTWAIT, MT_DATA);
+	if (m0 != NULL) {
+		if (m->m_pkthdr.len > MHLEN) {
+			MCLGET(m0, M_DONTWAIT);
+			if ((m0->m_flags & M_EXT) == 0) {
+				m_freem(m);
+				m_freem(m0);
+				return NULL;
+			}
+		}
+		m_copydata(m, 0, m->m_pkthdr.len, mtod(m0, caddr_t));
+		m0->m_pkthdr.len = m0->m_len = m->m_pkthdr.len;
+	}
+#else
+	int mlen = MHLEN;
+	int len = m->m_pkthdr.len;
+	struct mbuf **mp = &m0;
+
+	while (len > 0) {
+		if (mlen == MHLEN) {
+			MGETHDR(*mp, M_DONTWAIT, MT_DATA);
+		} else {
+			MGET(*mp, M_DONTWAIT, MT_DATA);
+		}
+		if (*mp == NULL) {
+			m_freem(m0);
+			m0 = NULL;
+			break;
+		}
+		if (len > MLEN) {
+			MCLGET(*mp, M_DONTWAIT);
+			if (((*mp)->m_flags & M_EXT) == 0) {
+				m_freem(m0);
+				m0 = NULL;
+				break;
+			}
+			(*mp)->m_len = (len <= MCLBYTES ? len : MCLBYTES);
+		} else {
+			(*mp)->m_len = (len <= mlen ? len : mlen);
+		}
+		m_copydata(m, m->m_pkthdr.len - len,
+			   (*mp)->m_len, mtod((*mp), caddr_t));
+		len -= (*mp)->m_len;
+		mp = &(*mp)->m_next;
+		mlen = MLEN;
+	}
+#endif
+	m_freem(m);
+	return m0;
+}
+
+/*
+ * queue the mbuf handed to us for the interface.  If we cannot
+ * queue it, return the mbuf.  Return NULL if the mbuf was queued.
+ */
+static struct mbuf *
+lmc_txput(lmc_softc_t * const sc, struct mbuf *m)
+{
+	lmc_ringinfo_t * const ri = &sc->lmc_txinfo;
+	tulip_desc_t *eop, *nextout;
+	int segcnt, free;
+	u_int32_t d_status;
+	struct mbuf *m0;
+
+#if defined(LMC_DEBUG)
+	if ((sc->lmc_cmdmode & TULIP_CMD_TXRUN) == 0) {
+		printf(LMC_PRINTF_FMT ": txput: tx not running\n",
+		       LMC_PRINTF_ARGS);
+		sc->lmc_flags |= LMC_WANTTXSTART;
+		goto finish;
+	}
+#endif
+
+	/*
+	 * Now we try to fill in our transmit descriptors.  This is
+	 * a bit reminiscent of going on the Ark two by two
+	 * since each descriptor for the TULIP can describe
+	 * two buffers.  So we advance through packet filling
+	 * each of the two entries at a time to fill each
+	 * descriptor.  Clear the first and last segment bits
+	 * in each descriptor (actually just clear everything
+	 * but the end-of-ring or chain bits) to make sure
+	 * we don't get messed up by previously sent packets.
+	 *
+	 * We may fail to put the entire packet on the ring if
+	 * there is either not enough ring entries free or if the
+	 * packet has more than MAX_TXSEG segments.  In the former
+	 * case we will just wait for the ring to empty.  In the
+	 * latter case we have to recopy.
+	 */
+ again:
+	d_status = 0;
+	eop = nextout = ri->ri_nextout;
+	m0 = m;
+	segcnt = 0;
+	free = ri->ri_free;
+	do {
+		int len = m0->m_len;
+		caddr_t addr = mtod(m0, caddr_t);
+		unsigned clsize = CLBYTES - (((u_long) addr) & (CLBYTES-1));
+
+		while (len > 0) {
+			unsigned slen = min(len, clsize);
+#ifdef BIG_PACKET
+			int partial = 0;
+			if (slen >= 2048)
+				slen = 2040, partial = 1;
+#endif
+			segcnt++;
+			if (segcnt > LMC_MAX_TXSEG) {
+				/*
+				 * The packet exceeds the number of transmit
+				 * buffer entries that we can use for one
+				 * packet, so we have recopy it into one mbuf
+				 * and then try again.
+				 */
+				m = lmc_mbuf_compress(m);
+				if (m == NULL)
+					goto finish;
+				goto again;
+			}
+			if (segcnt & 1) {
+				if (--free == 0) {
+					/*
+					 * See if there's any unclaimed space
+					 * in the transmit ring.
+					 */
+					if ((free += lmc_tx_intr(sc)) == 0) {
+						/*
+						 * There's no more room but
+						 * since nothing has been
+						 * committed at this point,
+						 * just show output is active,
+						 * put back the mbuf and
+						 * return.
+						 */
+						sc->lmc_flags |= LMC_WANTTXSTART;
+						goto finish;
+					}
+				}
+				eop = nextout;
+				if (++nextout == ri->ri_last)
+					nextout = ri->ri_first;
+				eop->d_flag &= TULIP_DFLAG_ENDRING;
+				eop->d_flag |= TULIP_DFLAG_TxNOPADDING;
+				if (sc->ictl.crc_length == 16)
+					eop->d_flag |= TULIP_DFLAG_TxHASCRC;
+				eop->d_status = d_status;
+				eop->d_addr1 = LMC_KVATOPHYS(sc, addr);
+				eop->d_length1 = slen;
+			} else {
+				/*
+				 *  Fill in second half of descriptor
+				 */
+				eop->d_addr2 = LMC_KVATOPHYS(sc, addr);
+				eop->d_length2 = slen;
+			}
+			d_status = TULIP_DSTS_OWNER;
+			len -= slen;
+			addr += slen;
+#ifdef BIG_PACKET
+			if (partial)
+				continue;
+#endif
+			clsize = CLBYTES;
+		}
+	} while ((m0 = m0->m_next) != NULL);
+
+
+	/*
+	 * The descriptors have been filled in.  Now get ready
+	 * to transmit.
+	 */
+	IF_ENQUEUE(&sc->lmc_txq, m);
+	m = NULL;
+
+	/*
+	 * Make sure the next descriptor after this packet is owned
+	 * by us since it may have been set up above if we ran out
+	 * of room in the ring.
+	 */
+	nextout->d_status = 0;
+
+	/*
+	 * If we only used the first segment of the last descriptor,
+	 * make sure the second segment will not be used.
+	 */
+	if (segcnt & 1) {
+		eop->d_addr2 = 0;
+		eop->d_length2 = 0;
+	}
+
+	/*
+	 * Mark the last and first segments, indicate we want a transmit
+	 * complete interrupt, and tell it to transmit!
+	 */
+	eop->d_flag |= TULIP_DFLAG_TxLASTSEG | TULIP_DFLAG_TxWANTINTR;
+
+	/*
+	 * Note that ri->ri_nextout is still the start of the packet
+	 * and until we set the OWNER bit, we can still back out of
+	 * everything we have done.
+	 */
+	ri->ri_nextout->d_flag |= TULIP_DFLAG_TxFIRSTSEG;
+	ri->ri_nextout->d_status = TULIP_DSTS_OWNER;
+
+	LMC_CSR_WRITE(sc, csr_txpoll, 1);
+
+	/*
+	 * This advances the ring for us.
+	 */
+	ri->ri_nextout = nextout;
+	ri->ri_free = free;
+
+	/*
+	 * switch back to the single queueing ifstart.
+	 */
+	sc->lmc_flags &= ~LMC_WANTTXSTART;
+	sc->lmc_if.if_start = lmc_ifstart_one;
+
+	/*
+	 * If we want a txstart, there must be not enough space in the
+	 * transmit ring.  So we want to enable transmit done interrupts
+	 * so we can immediately reclaim some space.  When the transmit
+	 * interrupt is posted, the interrupt handler will call tx_intr
+	 * to reclaim space and then txstart (since WANTTXSTART is set).
+	 * txstart will move the packet into the transmit ring and clear
+	 * WANTTXSTART thereby causing TXINTR to be cleared.
+	 */
+ finish:
+	if (sc->lmc_flags & LMC_WANTTXSTART) {
+		sc->lmc_if.if_flags |= IFF_OACTIVE;
+		sc->lmc_if.if_start = lmc_ifstart;
+	}
+
+	return m;
+}
+
+
+/*
+ * This routine is entered at splnet() (splsoftnet() on NetBSD)
+ */
+static int
+lmc_ifioctl(struct ifnet * ifp, ioctl_cmd_t cmd, caddr_t data)
+{
+	lmc_softc_t * const sc = LMC_IFP_TO_SOFTC(ifp);
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+	lmc_spl_t s;
+#endif
+	int error = 0;
+	struct ifreq *ifr = (struct ifreq *)data;
+	u_int32_t new_state;
+	u_int32_t old_state;
+	lmc_ctl_t ctl;
+
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+	s = LMC_RAISESPL();
+#endif
+
+	switch (cmd) {
+	case LMCIOCGINFO:
+		error = copyout(&sc->ictl, ifr->ifr_data, sizeof(lmc_ctl_t));
+
+		goto out;
+		break;
+
+	case LMCIOCSINFO:
+#if 0 /* XXX */
+		error = suser(p->p_ucred, &p->p_acflag);
+		if (error)
+			goto out;
+#endif
+
+		error = copyin(ifr->ifr_data, &ctl, sizeof(lmc_ctl_t));
+		if (error != 0)
+			goto out;
+
+		sc->lmc_media->set_status(sc, &ctl);
+
+		goto out;
+		break;
+
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+#if !defined(ifr_mtu)
+#define ifr_mtu ifr_metric
+#endif
+	case SIOCSIFMTU:
+		/*
+		 * Don't allow the MTU to get larger than we can handle
+		 */
+		if (ifr->ifr_mtu > LMC_MTU) {
+			error = EINVAL;
+			goto out;
+		}
+#endif
+	}
+
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+	/*
+	 * call the sppp ioctl layer
+	 */
+	error = sppp_ioctl(ifp, cmd, data);
+	if (error != 0)
+		goto out;
+#endif
+
+#if defined(__bsdi__)
+	error = p2p_ioctl(ifp, cmd, data);
+#endif
+
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+	/*
+	 * If we are transitioning from up to down or down to up, call
+	 * our init routine.
+	 */
+	new_state = ifp->if_flags & IFF_UP;
+	old_state = sc->lmc_flags & LMC_IFUP;
+
+	if (new_state && !old_state)
+		lmc_ifup(sc);
+	else if (!new_state && old_state)
+		lmc_ifdown(sc);
+#endif
+
+ out:
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+	LMC_RESTORESPL(s);
+#endif
+
+	return error;
+}
+
+/*
+ * These routines gets called at device spl (from sppp_output).
+ */
+
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+static ifnet_ret_t
+lmc_ifstart(struct ifnet * const ifp)
+{
+	lmc_softc_t * const sc = LMC_IFP_TO_SOFTC(ifp);
+	struct mbuf *m;
+
+	if (sc->lmc_flags & LMC_IFUP) {
+		while (sppp_isempty(ifp) == 0) {
+			m = sppp_dequeue(ifp);
+			if ((m = lmc_txput(sc, m)) != NULL) {
+				IF_PREPEND(&((struct sppp *)ifp)->pp_fastq, m);
+				break;
+			}
+		}
+		LMC_CSR_WRITE(sc, csr_txpoll, 1);
+	}
+}
+
+static ifnet_ret_t
+lmc_ifstart_one(struct ifnet * const ifp)
+{
+	lmc_softc_t * const sc = LMC_IFP_TO_SOFTC(ifp);
+	struct mbuf *m;
+
+	if ((sc->lmc_flags & LMC_IFUP) && (sppp_isempty(ifp) == 0)) {
+		m = sppp_dequeue(ifp);
+		if ((m = lmc_txput(sc, m)) != NULL) {
+			IF_PREPEND(&((struct sppp *)ifp)->pp_fastq, m);
+		}
+		LMC_CSR_WRITE(sc, csr_txpoll, 1);
+	}
+}
+#endif
+
+#if defined(__bsdi__)
+static ifnet_ret_t
+lmc_ifstart(struct ifnet * const ifp)
+{
+	lmc_softc_t * const sc = LMC_IFP_TO_SOFTC(ifp);
+	struct mbuf *m;
+	struct ifqueue *ifq;
+
+	if ((sc->lmc_flags & LMC_IFUP) == 0)
+		return;
+
+	for (;;) {
+		ifq = &sc->lmc_p2pcom.p2p_isnd;
+
+		m = ifq->ifq_head;
+		if (m == NULL) {
+			ifq = &sc->lmc_if.if_snd;
+			m = ifq->ifq_head;
+		}
+		if (m == NULL)
+			break;
+		IF_DEQUEUE(ifq, m);
+
+		m = lmc_txput(sc, m);
+		if (m != NULL) {
+			IF_PREPEND(ifq, m);
+			break;
+		}
+	}
+
+	LMC_CSR_WRITE(sc, csr_txpoll, 1);
+}
+
+static ifnet_ret_t
+lmc_ifstart_one(struct ifnet * const ifp)
+{
+	lmc_softc_t * const sc = LMC_IFP_TO_SOFTC(ifp);
+	struct mbuf *m;
+	struct ifqueue *ifq;
+
+	if ((sc->lmc_flags & LMC_IFUP) == 0)
+		return;
+
+	ifq = &sc->lmc_p2pcom.p2p_isnd;
+
+	m = ifq->ifq_head;
+	if (m == NULL) {
+		ifq = &sc->lmc_if.if_snd;
+		m = ifq->ifq_head;
+	}
+	if (m == NULL)
+		return 0;
+	IF_DEQUEUE(ifq, m);
+
+	m = lmc_txput(sc, m);
+	if (m != NULL)
+		IF_PREPEND(ifq, m);
+
+	LMC_CSR_WRITE(sc, csr_txpoll, 1);
+}
+#endif
+
+#if defined(__bsdi__)
+int
+lmc_getmdm(struct p2pcom *pp, caddr_t b)
+{
+	lmc_softc_t *sc = LMC_UNIT_TO_SOFTC(pp->p2p_if.if_unit);
+
+	if (sc->lmc_media->get_link_status(sc)) {
+		*(int *)b = TIOCM_CAR;
+	} else {
+		*(int *)b = 0;
+	}
+
+	return (0);
+}
+
+int
+lmc_mdmctl(struct p2pcom *pp, int flag)
+{
+	lmc_softc_t *sc = LMC_UNIT_TO_SOFTC(pp->p2p_if.if_unit);
+
+	sc->lmc_media->set_link_status(sc, flag);
+
+	if (flag)
+		if ((sc->lmc_flags & LMC_IFUP) == 0)
+			lmc_ifup(sc);
+	else
+		if ((sc->lmc_flags & LMC_IFUP) == LMC_IFUP)
+			lmc_ifdown(sc);
+
+	return (0);
+}
+#endif
+
+/*
+ * Set up the OS interface magic and attach to the operating system
+ * network services.
+ */
+void
+lmc_attach(lmc_softc_t * const sc)
+{
+	struct ifnet * const ifp = &sc->lmc_if;
+
+	ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
+	ifp->if_ioctl = lmc_ifioctl;
+	ifp->if_start = lmc_ifstart;
+	ifp->if_watchdog = lmc_watchdog;
+	ifp->if_timer = 1;
+	ifp->if_mtu = LMC_MTU;
+
+#if defined(__bsdi__)
+	ifp->if_type = IFT_NONE;
+	ifp->if_unit = (sc->lmc_dev.dv_unit);
+#endif
+  
+	if_attach(ifp);
+
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+	sppp_attach((struct ifnet *)&sc->lmc_sppp);
+	sc->lmc_sppp.pp_flags = PP_CISCO | PP_KEEPALIVE;
+#endif
+#if defined(__bsdi__)
+	sc->lmc_p2pcom.p2p_mdmctl = lmc_mdmctl;
+	sc->lmc_p2pcom.p2p_getmdm = lmc_getmdm;
+	p2p_attach(&sc->lmc_p2pcom);
+#endif
+
+#if NBPFILTER > 0
+	LMC_BPF_ATTACH(sc);
+#endif
+
+#if defined(__NetBSD__) && NRND > 0
+	rnd_attach_source(&sc->lmc_rndsource, sc->lmc_dev.dv_xname,
+			  RND_TYPE_NET, 0);
+#endif
+
+	/*
+	 * turn off those LEDs...
+	 */
+	sc->lmc_miireg16 |= LMC_MII16_LED_ALL;
+	lmc_led_on(sc, LMC_MII16_LED0);
+}
+
+void
+lmc_initring(lmc_softc_t * const sc, lmc_ringinfo_t * const ri,
+	       tulip_desc_t *descs, int ndescs)
+{
+	ri->ri_max = ndescs;
+	ri->ri_first = descs;
+	ri->ri_last = ri->ri_first + ri->ri_max;
+	bzero((caddr_t) ri->ri_first, sizeof(ri->ri_first[0]) * ri->ri_max);
+	ri->ri_last[-1].d_flag = TULIP_DFLAG_ENDRING;
+}
diff --git a/sys/dev/pci/if_lmc_common.c b/sys/dev/pci/if_lmc_common.c
new file mode 100644
index 00000000000..a005df8830c
--- /dev/null
+++ b/sys/dev/pci/if_lmc_common.c
@@ -0,0 +1,408 @@
+/*	$NetBSD: if_lmc_common.c,v 1.1 1999/03/25 03:32:43 explorer Exp $	*/
+
+/*-
+ * Copyright (c) 1997-1999 LAN Media Corporation (LMC)
+ * All rights reserved.  www.lanmedia.com
+ *
+ * This code is written by Michael Graff <graff@vix.com> for LMC.
+ * The code is derived from permitted modifications to software created
+ * by Matt Thomas (matt@3am-software.com).
+ *
+ * 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 marketing or advertising materials mentioning features or
+ *    use of this software must display the following acknowledgement:
+ *      This product includes software developed by LAN Media Corporation
+ *      and its contributors.
+ * 4. Neither the name of LAN Media Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY LAN MEDIA CORPORATION 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 THE FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+/*-
+ * Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough 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.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/errno.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <sys/proc.h>	/* only for declaration of wakeup() used by vm.h */
+#if defined(__FreeBSD__)
+#include <machine/clock.h>
+#elif defined(__bsdi__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <sys/device.h>
+#endif
+
+#if defined(__NetBSD__)
+#include <dev/pci/pcidevs.h>
+#include "rnd.h"
+#if NRND > 0
+#include <sys/rnd.h>
+#endif
+#endif
+
+#if defined(__OpenBSD__)
+#include <dev/pci/pcidevs.h>
+#endif
+
+#include <net/if.h>
+#include <net/if_types.h>
+#include <net/if_dl.h>
+#include <net/netisr.h>
+
+#include "bpfilter.h"
+#if NBPFILTER > 0
+#include <net/bpf.h>
+#include <net/bpfdesc.h>
+#endif
+
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+#include <vm/vm_kern.h>
+
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <net/if_sppp.h>
+#endif
+
+#if defined(__bsdi__)
+#if INET
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#endif
+
+#include <net/netisr.h>
+#include <net/if.h>
+#include <net/netisr.h>
+#include <net/if_types.h>
+#include <net/if_p2p.h>
+#include <net/if_c_hdlc.h>
+#endif
+
+#if defined(__FreeBSD__)
+#include <vm/pmap.h>
+#include <pci.h>
+#if NPCI > 0
+#include <pci/pcivar.h>
+#include <pci/dc21040reg.h>
+#define INCLUDE_PATH_PREFIX "pci/"
+#endif
+#endif /* __FreeBSD__ */
+
+#if defined(__bsdi__)
+#include <i386/pci/ic/dc21040.h>
+#include <i386/isa/isa.h>
+#include <i386/isa/icu.h>
+#include <i386/isa/dma.h>
+#include <i386/isa/isavar.h>
+#include <i386/pci/pci.h>
+
+#define	INCLUDE_PATH_PREFIX	"i386/pci/"
+#endif /* __bsdi__ */
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+#include <machine/bus.h>
+#if defined(__alpha__) && defined(__NetBSD__)
+#include <machine/intr.h>
+#endif
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+#include <dev/ic/dc21040reg.h>
+#define	INCLUDE_PATH_PREFIX	"dev/pci/"
+#endif /* __NetBSD__ */
+
+#if defined(__OpenBSD__)
+#define d_length1 u.bd_length1
+#define d_length2 u.bd_length2
+#define d_flag u.bd_flag
+#endif
+
+/*
+ * Sigh.  Every OS puts these in different places.  NetBSD and FreeBSD use
+ * a C preprocessor that allows this hack, but BSDI does not.
+ */
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+#include INCLUDE_PATH_PREFIX "if_lmc_types.h"
+#include INCLUDE_PATH_PREFIX "if_lmcioctl.h"
+#include INCLUDE_PATH_PREFIX "if_lmcvar.h"
+#else /* BSDI */
+#include "i386/pci/if_lmc_types.h"
+#include "i386/pci/if_lmcioctl.h"
+#include "i386/pci/if_lmcvar.h"
+#endif
+
+void
+lmc_gpio_mkinput(lmc_softc_t * const sc, u_int32_t bits)
+{
+	sc->lmc_gpio_io &= ~bits;
+	LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io));
+}
+
+void
+lmc_gpio_mkoutput(lmc_softc_t * const sc, u_int32_t bits)
+{
+	sc->lmc_gpio_io |= bits;
+	LMC_CSR_WRITE(sc, csr_gp, TULIP_GP_PINSET | (sc->lmc_gpio_io));
+}
+
+void
+lmc_led_on(lmc_softc_t * const sc, u_int32_t led)
+{
+	sc->lmc_miireg16 &= ~led;
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+}
+
+void
+lmc_led_off(lmc_softc_t * const sc, u_int32_t led)
+{
+	sc->lmc_miireg16 |= led;
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+}
+
+void
+lmc_reset(lmc_softc_t * const sc)
+{
+	sc->lmc_miireg16 |= LMC_MII16_FIFO_RESET;
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+
+	sc->lmc_miireg16 &= ~LMC_MII16_FIFO_RESET;
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+
+	/*
+	 * make some of the GPIO pins be outputs
+	 */
+	lmc_gpio_mkoutput(sc, LMC_GEP_DP | LMC_GEP_RESET);
+
+	/*
+	 * drive DP and RESET low to force configuration.  This also forces
+	 * the transmitter clock to be internal, but we expect to reset
+	 * that later anyway.
+	 */
+	sc->lmc_gpio &= ~(LMC_GEP_DP | LMC_GEP_RESET);
+	LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+	/*
+	 * hold for more than 10 microseconds
+	 */
+	DELAY(50);
+
+	/*
+	 * stop driving Xilinx-related signals
+	 */
+	lmc_gpio_mkinput(sc, LMC_GEP_DP | LMC_GEP_RESET);
+
+	/*
+	 * busy wait for the chip to reset
+	 */
+	while ((LMC_CSR_READ(sc, csr_gp) & LMC_GEP_DP) == 0)
+		;
+
+	/*
+	 * Call media specific init routine
+	 */
+	sc->lmc_media->init(sc);
+}
+
+void
+lmc_dec_reset(lmc_softc_t * const sc)
+{
+#ifndef __linux__
+	lmc_ringinfo_t *ri;
+	tulip_desc_t *di;
+#endif
+	u_int32_t val;
+
+	/*
+	 * disable all interrupts
+	 */
+	sc->lmc_intrmask = 0;
+	LMC_CSR_WRITE(sc, csr_intr, sc->lmc_intrmask);
+
+	/*
+	 * we are, obviously, down.
+	 */
+#ifndef __linux__
+	sc->lmc_flags &= ~(LMC_IFUP | LMC_MODEMOK);
+
+	DP(("lmc_dec_reset\n"));
+#endif
+
+	/*
+	 * Reset the chip with a software reset command.
+	 * Wait 10 microseconds (actually 50 PCI cycles but at 
+	 * 33MHz that comes to two microseconds but wait a
+	 * bit longer anyways)
+	 */
+	LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET);
+	DELAY(10);
+	sc->lmc_cmdmode = LMC_CSR_READ(sc, csr_command);
+
+	/*
+	 * We want:
+	 *   no ethernet address in frames we write
+	 *   disable padding (txdesc, padding disable)
+	 *   ignore runt frames (rdes0 bit 15)
+	 *   no receiver watchdog or transmitter jabber timer
+	 *       (csr15 bit 0,14 == 1)
+	 *   if using 16-bit CRC, turn off CRC (trans desc, crc disable)
+	 */
+
+#ifndef TULIP_CMD_RECEIVEALL
+#define TULIP_CMD_RECEIVEALL 0x40000000L
+#endif
+
+	sc->lmc_cmdmode |= ( TULIP_CMD_PROMISCUOUS
+			       | TULIP_CMD_FULLDUPLEX
+			       | TULIP_CMD_PASSBADPKT
+			       | TULIP_CMD_NOHEARTBEAT
+			       | TULIP_CMD_PORTSELECT
+			       | TULIP_CMD_RECEIVEALL
+			       | TULIP_CMD_MUSTBEONE
+			       );
+	sc->lmc_cmdmode &= ~( TULIP_CMD_OPERMODE
+				| TULIP_CMD_THRESHOLDCTL
+				| TULIP_CMD_STOREFWD
+				| TULIP_CMD_TXTHRSHLDCTL
+				);
+
+	LMC_CSR_WRITE(sc, csr_command, sc->lmc_cmdmode);
+
+	/*
+	 * disable receiver watchdog and transmit jabber
+	 */
+	val = LMC_CSR_READ(sc, csr_sia_general);
+	val |= (TULIP_WATCHDOG_TXDISABLE | TULIP_WATCHDOG_RXDISABLE);
+	LMC_CSR_WRITE(sc, csr_sia_general, val);
+
+	/*
+	 * turn off those LEDs...
+	 */
+	sc->lmc_miireg16 |= LMC_MII16_LED_ALL;
+	lmc_led_on(sc, LMC_MII16_LED0);
+
+#ifndef __linux__
+	/*
+	 * reprogram the tx desc, rx desc, and PCI bus options
+	 */
+	LMC_CSR_WRITE(sc, csr_txlist,
+			LMC_KVATOPHYS(sc, &sc->lmc_txinfo.ri_first[0]));
+	LMC_CSR_WRITE(sc, csr_rxlist,
+			LMC_KVATOPHYS(sc, &sc->lmc_rxinfo.ri_first[0]));
+	LMC_CSR_WRITE(sc, csr_busmode,
+			(1 << (LMC_BURSTSIZE(sc->lmc_unit) + 8))
+			|TULIP_BUSMODE_CACHE_ALIGN8
+			|TULIP_BUSMODE_READMULTIPLE
+			|(BYTE_ORDER != LITTLE_ENDIAN ? TULIP_BUSMODE_BIGENDIAN : 0));
+
+	sc->lmc_txq.ifq_maxlen = LMC_TXDESCS;
+
+	/*
+	 * Free all the mbufs that were on the transmit ring.
+	 */
+	for (;;) {
+		struct mbuf *m;
+
+		IF_DEQUEUE(&sc->lmc_txq, m);
+		if (m == NULL)
+			break;
+		m_freem(m);
+	}
+
+	/*
+	 * reset descriptor state and reclaim all descriptors.
+	 */
+	ri = &sc->lmc_txinfo;
+	ri->ri_nextin = ri->ri_nextout = ri->ri_first;
+	ri->ri_free = ri->ri_max;
+	for (di = ri->ri_first; di < ri->ri_last; di++)
+		di->d_status = 0;
+
+	/*
+	 * We need to collect all the mbufs were on the 
+	 * receive ring before we reinit it either to put
+	 * them back on or to know if we have to allocate
+	 * more.
+	 */
+	ri = &sc->lmc_rxinfo;
+	ri->ri_nextin = ri->ri_nextout = ri->ri_first;
+	ri->ri_free = ri->ri_max;
+	for (di = ri->ri_first; di < ri->ri_last; di++) {
+		di->d_status = 0;
+		di->d_length1 = 0; di->d_addr1 = 0;
+		di->d_length2 = 0; di->d_addr2 = 0;
+	}
+	for (;;) {
+		struct mbuf *m;
+		IF_DEQUEUE(&sc->lmc_rxq, m);
+		if (m == NULL)
+			break;
+		m_freem(m);
+	}
+#endif
+}
+
+void
+lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base,
+	     size_t csr_size)
+{
+	sc->lmc_csrs.csr_busmode	= csr_base +  0 * csr_size;
+	sc->lmc_csrs.csr_txpoll		= csr_base +  1 * csr_size;
+	sc->lmc_csrs.csr_rxpoll		= csr_base +  2 * csr_size;
+	sc->lmc_csrs.csr_rxlist		= csr_base +  3 * csr_size;
+	sc->lmc_csrs.csr_txlist		= csr_base +  4 * csr_size;
+	sc->lmc_csrs.csr_status		= csr_base +  5 * csr_size;
+	sc->lmc_csrs.csr_command	= csr_base +  6 * csr_size;
+	sc->lmc_csrs.csr_intr		= csr_base +  7 * csr_size;
+	sc->lmc_csrs.csr_missed_frames	= csr_base +  8 * csr_size;
+	sc->lmc_csrs.csr_9		= csr_base +  9 * csr_size;
+	sc->lmc_csrs.csr_10		= csr_base + 10 * csr_size;
+	sc->lmc_csrs.csr_11		= csr_base + 11 * csr_size;
+	sc->lmc_csrs.csr_12		= csr_base + 12 * csr_size;
+	sc->lmc_csrs.csr_13		= csr_base + 13 * csr_size;
+	sc->lmc_csrs.csr_14		= csr_base + 14 * csr_size;
+	sc->lmc_csrs.csr_15		= csr_base + 15 * csr_size;
+}
diff --git a/sys/dev/pci/if_lmc_media.c b/sys/dev/pci/if_lmc_media.c
new file mode 100644
index 00000000000..7bcfa3bff59
--- /dev/null
+++ b/sys/dev/pci/if_lmc_media.c
@@ -0,0 +1,797 @@
+/*	$NetBSD: if_lmc_media.c,v 1.1 1999/03/25 03:32:43 explorer Exp $	*/
+
+/*-
+ * Copyright (c) 1997-1999 LAN Media Corporation (LMC)
+ * All rights reserved.  www.lanmedia.com
+ *
+ * This code is written by Michael Graff <graff@vix.com> for LMC.
+ *
+ * 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 marketing or advertising materials mentioning features or
+ *    use of this software must display the following acknowledgement:
+ *      This product includes software developed by LAN Media Corporation
+ *      and its contributors.
+ * 4. Neither the name of LAN Media Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY LAN MEDIA CORPORATION 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 THE FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/errno.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <sys/proc.h>	/* only for declaration of wakeup() used by vm.h */
+#if defined(__FreeBSD__)
+#include <machine/clock.h>
+#elif defined(__bsdi__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <sys/device.h>
+#endif
+
+#if defined(__NetBSD__)
+#include <dev/pci/pcidevs.h>
+#include "rnd.h"
+#if NRND > 0
+#include <sys/rnd.h>
+#endif
+#endif
+
+#if defined(__OpenBSD__)
+#include <dev/pci/pcidevs.h>
+#endif
+
+#include <net/if.h>
+#include <net/if_types.h>
+#include <net/if_dl.h>
+#include <net/netisr.h>
+
+#include "bpfilter.h"
+#if NBPFILTER > 0
+#include <net/bpf.h>
+#include <net/bpfdesc.h>
+#endif
+
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+#include <vm/vm_kern.h>
+
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <net/if_sppp.h>
+#endif
+
+#if defined(__bsdi__)
+#if INET
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#endif
+
+#include <net/netisr.h>
+#include <net/if.h>
+#include <net/netisr.h>
+#include <net/if_types.h>
+#include <net/if_p2p.h>
+#include <net/if_c_hdlc.h>
+#endif
+
+#if defined(__FreeBSD__)
+#include <vm/pmap.h>
+#include <pci.h>
+#if NPCI > 0
+#include <pci/pcivar.h>
+#include <pci/dc21040reg.h>
+#define INCLUDE_PATH_PREFIX "pci/"
+#endif
+#endif /* __FreeBSD__ */
+
+#if defined(__bsdi__)
+#include <i386/pci/ic/dc21040.h>
+#include <i386/isa/isa.h>
+#include <i386/isa/icu.h>
+#include <i386/isa/dma.h>
+#include <i386/isa/isavar.h>
+#include <i386/pci/pci.h>
+
+#define	INCLUDE_PATH_PREFIX	"i386/pci/"
+#endif /* __bsdi__ */
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+#include <machine/bus.h>
+#if defined(__alpha__) && defined(__NetBSD__)
+#include <machine/intr.h>
+#endif
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+#include <dev/ic/dc21040reg.h>
+#define	INCLUDE_PATH_PREFIX	"dev/pci/"
+#endif /* __NetBSD__ */
+
+/*
+ * Sigh.  Every OS puts these in different places.  NetBSD and FreeBSD use
+ * a C preprocessor that allows this hack, but BSDI does not.
+ */
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+#include INCLUDE_PATH_PREFIX "if_lmc_types.h"
+#include INCLUDE_PATH_PREFIX "if_lmcioctl.h"
+#include INCLUDE_PATH_PREFIX "if_lmcvar.h"
+#else /* BSDI */
+#include "i386/pci/if_lmc_types.h"
+#include "i386/pci/if_lmcioctl.h"
+#include "i386/pci/if_lmcvar.h"
+#endif
+
+/*
+ * For lack of a better place, put the T1 cable stuff here.
+ */
+char *lmc_t1_cables[] = {
+	"V.10/RS423", "EIA530A", "reserved", "X.21", "V.35",
+	"EIA449/EIA530/V.36", "V.28/EIA232", "none", NULL
+};
+
+/*
+ * protocol independent method.
+ */
+static void	lmc_set_protocol(lmc_softc_t * const, lmc_ctl_t *);
+
+/*
+ * media independent methods to check on media status, link, light LEDs,
+ * etc.
+ */
+static void	lmc_ds3_init(lmc_softc_t * const);
+static void	lmc_ds3_default(lmc_softc_t * const);
+static void	lmc_ds3_set_status(lmc_softc_t * const, lmc_ctl_t *);
+static void	lmc_ds3_set_100ft(lmc_softc_t * const, int);
+static int	lmc_ds3_get_link_status(lmc_softc_t * const);
+static void	lmc_ds3_set_crc_length(lmc_softc_t * const, int);
+static void	lmc_ds3_set_scram(lmc_softc_t * const, int);
+
+static void	lmc_hssi_init(lmc_softc_t * const);
+static void	lmc_hssi_default(lmc_softc_t * const);
+static void	lmc_hssi_set_status(lmc_softc_t * const, lmc_ctl_t *);
+static void	lmc_hssi_set_clock(lmc_softc_t * const, int);
+static int	lmc_hssi_get_link_status(lmc_softc_t * const);
+static void	lmc_hssi_set_link_status(lmc_softc_t * const, int);
+static void	lmc_hssi_set_crc_length(lmc_softc_t * const, int);
+
+static void	lmc_t1_init(lmc_softc_t * const);
+static void	lmc_t1_default(lmc_softc_t * const);
+static void	lmc_t1_set_status(lmc_softc_t * const, lmc_ctl_t *);
+static void	lmc_t1_set_clock(lmc_softc_t * const, int);
+static void	lmc_t1_set_speed(lmc_softc_t * const, lmc_ctl_t *);
+static int	lmc_t1_get_link_status(lmc_softc_t * const);
+static void	lmc_t1_set_link_status(lmc_softc_t * const, int);
+static void	lmc_t1_set_crc_length(lmc_softc_t * const, int);
+
+static void	lmc_dummy_set_1(lmc_softc_t * const, int);
+static void	lmc_dummy_set2_1(lmc_softc_t * const, lmc_ctl_t *);
+
+static inline void write_av9110_bit(lmc_softc_t *, int);
+static void	write_av9110(lmc_softc_t *, u_int32_t, u_int32_t, u_int32_t,
+			     u_int32_t, u_int32_t);
+
+lmc_media_t lmc_ds3_media = {
+	lmc_ds3_init,			/* special media init stuff */
+	lmc_ds3_default,		/* reset to default state */
+	lmc_ds3_set_status,		/* reset status to state provided */
+	lmc_dummy_set_1,		/* set clock source */
+	lmc_dummy_set2_1,		/* set line speed */
+	lmc_ds3_set_100ft,		/* set cable length */
+	lmc_ds3_set_scram,		/* set scrambler */
+	lmc_ds3_get_link_status,	/* get link status */
+	lmc_dummy_set_1,		/* set link status */
+	lmc_ds3_set_crc_length,		/* set CRC length */
+};
+
+lmc_media_t lmc_hssi_media = {
+	lmc_hssi_init,			/* special media init stuff */
+	lmc_hssi_default,		/* reset to default state */
+	lmc_hssi_set_status,		/* reset status to state provided */
+	lmc_hssi_set_clock,		/* set clock source */
+	lmc_dummy_set2_1,		/* set line speed */
+	lmc_dummy_set_1,		/* set cable length */
+	lmc_dummy_set_1,		/* set scrambler */
+	lmc_hssi_get_link_status,	/* get link status */
+	lmc_hssi_set_link_status,	/* set link status */
+	lmc_hssi_set_crc_length,	/* set CRC length */
+};
+
+lmc_media_t lmc_t1_media = {
+	lmc_t1_init,			/* special media init stuff */
+	lmc_t1_default,			/* reset to default state */
+	lmc_t1_set_status,		/* reset status to state provided */
+	lmc_t1_set_clock,		/* set clock source */
+	lmc_t1_set_speed,		/* set line speed */
+	lmc_dummy_set_1,		/* set cable length */
+	lmc_dummy_set_1,		/* set scrambler */
+	lmc_t1_get_link_status,		/* get link status */
+	lmc_t1_set_link_status,		/* set link status */
+	lmc_t1_set_crc_length,		/* set CRC length */
+};
+
+static void
+lmc_dummy_set_1(lmc_softc_t * const sc, int a)
+{
+}
+
+static void
+lmc_dummy_set2_1(lmc_softc_t * const sc, lmc_ctl_t *a)
+{
+}
+
+/*
+ *  HSSI methods
+ */
+
+static void
+lmc_hssi_init(lmc_softc_t * const sc)
+{
+	sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5200;
+
+	lmc_gpio_mkoutput(sc, LMC_GEP_HSSI_CLOCK);
+}
+
+static void
+lmc_hssi_default(lmc_softc_t * const sc)
+{
+	sc->lmc_miireg16 = LMC_MII16_LED_ALL;
+
+	sc->lmc_media->set_link_status(sc, 0);
+	sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
+	sc->lmc_media->set_crc_length(sc, LMC_CTL_CRC_LENGTH_16);
+}
+
+/*
+ * Given a user provided state, set ourselves up to match it.  This will
+ * always reset the card if needed.
+ */
+static void
+lmc_hssi_set_status(lmc_softc_t * const sc, lmc_ctl_t *ctl)
+{
+	if (ctl == NULL) {
+		sc->lmc_media->set_clock_source(sc, sc->ictl.clock_source);
+		lmc_set_protocol(sc, NULL);
+
+		return;
+	}
+
+	/*
+	 * check for change in clock source
+	 */
+	if (ctl->clock_source && !sc->ictl.clock_source)
+		sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_INT);
+	else if (!ctl->clock_source && sc->ictl.clock_source)
+		sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
+
+	lmc_set_protocol(sc, ctl);
+}
+
+/*
+ * 1 == internal, 0 == external
+ */
+static void
+lmc_hssi_set_clock(lmc_softc_t * const sc, int ie)
+{
+	if (ie == LMC_CTL_CLOCK_SOURCE_EXT) {
+		sc->lmc_gpio |= LMC_GEP_HSSI_CLOCK;
+		LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+		sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
+		printf(LMC_PRINTF_FMT ": clock external\n",
+		       LMC_PRINTF_ARGS);
+	} else {
+		sc->lmc_gpio &= ~(LMC_GEP_HSSI_CLOCK);
+		LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+		sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
+		printf(LMC_PRINTF_FMT ": clock internal\n",
+		       LMC_PRINTF_ARGS);
+	}
+}
+
+/*
+ * return hardware link status.
+ * 0 == link is down, 1 == link is up.
+ */
+static int
+lmc_hssi_get_link_status(lmc_softc_t * const sc)
+{
+	u_int16_t link_status;
+
+	link_status = lmc_mii_readreg(sc, 0, 16);
+
+	if ((link_status & LMC_MII16_HSSI_CA) == LMC_MII16_HSSI_CA)
+		return 1;
+	else
+		return 0;
+}
+
+static void
+lmc_hssi_set_link_status(lmc_softc_t * const sc, int state)
+{
+	if (state)
+		sc->lmc_miireg16 |= LMC_MII16_HSSI_TA;
+	else
+		sc->lmc_miireg16 &= ~LMC_MII16_HSSI_TA;
+
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+}
+
+/*
+ * 0 == 16bit, 1 == 32bit
+ */
+static void
+lmc_hssi_set_crc_length(lmc_softc_t * const sc, int state)
+{
+	if (state == LMC_CTL_CRC_LENGTH_32) {
+		/* 32 bit */
+		sc->lmc_miireg16 |= LMC_MII16_HSSI_CRC;
+		sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
+	} else {
+		/* 16 bit */
+		sc->lmc_miireg16 &= ~LMC_MII16_HSSI_CRC;
+		sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
+	}
+
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+}
+
+
+/*
+ *  DS3 methods
+ */
+
+/*
+ * Set cable length
+ */
+static void
+lmc_ds3_set_100ft(lmc_softc_t * const sc, int ie)
+{
+	if (ie == LMC_CTL_CABLE_LENGTH_GT_100FT) {
+		sc->lmc_miireg16 &= ~LMC_MII16_DS3_ZERO;
+		sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_GT_100FT;
+	} else if (ie == LMC_CTL_CABLE_LENGTH_LT_100FT) {
+		sc->lmc_miireg16 |= LMC_MII16_DS3_ZERO;
+		sc->ictl.cable_length = LMC_CTL_CABLE_LENGTH_LT_100FT;
+	}
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+}
+
+static void
+lmc_ds3_default(lmc_softc_t * const sc)
+{
+	sc->lmc_miireg16 = LMC_MII16_LED_ALL;
+
+	sc->lmc_media->set_link_status(sc, 0);
+	sc->lmc_media->set_cable_length(sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
+	sc->lmc_media->set_scrambler(sc, LMC_CTL_OFF);
+	sc->lmc_media->set_crc_length(sc, LMC_CTL_CRC_LENGTH_16);
+}
+
+/*
+ * Given a user provided state, set ourselves up to match it.  This will
+ * always reset the card if needed.
+ */
+static void
+lmc_ds3_set_status(lmc_softc_t * const sc, lmc_ctl_t *ctl)
+{
+	if (ctl == NULL) {
+		sc->lmc_media->set_cable_length(sc, sc->ictl.cable_length);
+		sc->lmc_media->set_scrambler(sc, sc->ictl.scrambler_onoff);
+		lmc_set_protocol(sc, NULL);
+
+		return;
+	}
+
+	/*
+	 * check for change in cable length setting
+	 */
+	if (ctl->cable_length && !sc->ictl.cable_length)
+		lmc_ds3_set_100ft(sc, LMC_CTL_CABLE_LENGTH_GT_100FT);
+	else if (!ctl->cable_length && sc->ictl.cable_length)
+		lmc_ds3_set_100ft(sc, LMC_CTL_CABLE_LENGTH_LT_100FT);
+
+	/*
+	 * Check for change in scrambler setting (requires reset)
+	 */
+	if (ctl->scrambler_onoff && !sc->ictl.scrambler_onoff)
+		lmc_ds3_set_scram(sc, LMC_CTL_ON);
+	else if (!ctl->scrambler_onoff && sc->ictl.scrambler_onoff)
+		lmc_ds3_set_scram(sc, LMC_CTL_OFF);
+
+	lmc_set_protocol(sc, ctl);
+}
+
+static void
+lmc_ds3_init(lmc_softc_t * const sc)
+{
+	int i;
+
+	sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC5245;
+
+	/* writes zeros everywhere */
+	for (i = 0 ; i < 21 ; i++) {
+		lmc_mii_writereg(sc, 0, 17, i);
+		lmc_mii_writereg(sc, 0, 18, 0);
+	}
+
+	/* set some essential bits */
+	lmc_mii_writereg(sc, 0, 17, 1);
+	lmc_mii_writereg(sc, 0, 18, 0x05);	/* ser, xtx */
+
+	lmc_mii_writereg(sc, 0, 17, 5);
+	lmc_mii_writereg(sc, 0, 18, 0x80);	/* emode */
+
+	lmc_mii_writereg(sc, 0, 17, 14);
+	lmc_mii_writereg(sc, 0, 18, 0x30);	/* rcgen, tcgen */
+
+	/* clear counters and latched bits */
+	for (i = 0 ; i < 21 ; i++) {
+		lmc_mii_writereg(sc, 0, 17, i);
+		lmc_mii_readreg(sc, 0, 18);
+	}
+}
+
+/*
+ * 1 == DS3 payload scrambled, 0 == not scrambled
+ */
+static void
+lmc_ds3_set_scram(lmc_softc_t * const sc, int ie)
+{
+	if (ie == LMC_CTL_ON) {
+		sc->lmc_miireg16 |= LMC_MII16_DS3_SCRAM;
+		sc->ictl.scrambler_onoff = LMC_CTL_ON;
+	} else {
+		sc->lmc_miireg16 &= ~LMC_MII16_DS3_SCRAM;
+		sc->ictl.scrambler_onoff = LMC_CTL_OFF;
+	}
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+}
+
+/*
+ * return hardware link status.
+ * 0 == link is down, 1 == link is up.
+ */
+static int
+lmc_ds3_get_link_status(lmc_softc_t * const sc)
+{
+	u_int16_t link_status;
+
+	lmc_mii_writereg(sc, 0, 17, 7);
+	link_status = lmc_mii_readreg(sc, 0, 18);
+
+	if ((link_status & LMC_FRAMER_REG0_DLOS) == 0)
+		return 1;
+	else
+		return 0;
+}
+
+/*
+ * 0 == 16bit, 1 == 32bit
+ */
+static void
+lmc_ds3_set_crc_length(lmc_softc_t * const sc, int state)
+{
+	if (state == LMC_CTL_CRC_LENGTH_32) {
+		/* 32 bit */
+		sc->lmc_miireg16 |= LMC_MII16_DS3_CRC;
+		sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
+	} else {
+		/* 16 bit */
+		sc->lmc_miireg16 &= ~LMC_MII16_DS3_CRC;
+		sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
+	}
+
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+}
+
+
+/*
+ *  T1 methods
+ */
+
+static void
+lmc_t1_init(lmc_softc_t * const sc)
+{
+	u_int16_t mii17;
+	int cable;
+
+	sc->ictl.cardtype = LMC_CTL_CARDTYPE_LMC1000;
+
+	mii17 = lmc_mii_readreg(sc, 0, 17);
+
+	cable = (mii17 & LMC_MII17_T1_CABLE_MASK) >> LMC_MII17_T1_CABLE_SHIFT;
+	sc->ictl.cable_type = cable;
+
+	lmc_gpio_mkoutput(sc, LMC_GEP_T1_TXCLOCK);
+}
+
+static void
+lmc_t1_default(lmc_softc_t * const sc)
+{
+	sc->lmc_miireg16 = LMC_MII16_LED_ALL;
+
+	/*
+	 * make TXCLOCK always be an output
+	 */
+	lmc_gpio_mkoutput(sc, LMC_GEP_T1_TXCLOCK);
+
+	sc->lmc_media->set_link_status(sc, 0);
+	sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
+	sc->lmc_media->set_speed(sc, NULL);
+	sc->lmc_media->set_crc_length(sc, LMC_CTL_CRC_LENGTH_16);
+}
+
+/*
+ * Given a user provided state, set ourselves up to match it.  This will
+ * always reset the card if needed.
+ */
+static void
+lmc_t1_set_status(lmc_softc_t * const sc, lmc_ctl_t *ctl)
+{
+	if (ctl == NULL) {
+		sc->lmc_media->set_clock_source(sc, sc->ictl.clock_source);
+		sc->lmc_media->set_speed(sc, &sc->ictl);
+		lmc_set_protocol(sc, NULL);
+
+		return;
+	}
+
+	/*
+	 * check for change in clock source
+	 */
+	if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_INT
+	    && sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_EXT)
+		sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_INT);
+	else if (ctl->clock_source == LMC_CTL_CLOCK_SOURCE_EXT
+		 && sc->ictl.clock_source == LMC_CTL_CLOCK_SOURCE_INT)
+		sc->lmc_media->set_clock_source(sc, LMC_CTL_CLOCK_SOURCE_EXT);
+
+	if (ctl->clock_rate != sc->ictl.clock_rate)
+		sc->lmc_media->set_speed(sc, ctl);
+
+	lmc_set_protocol(sc, ctl);
+}
+
+/*
+ * 1 == internal, 0 == external
+ */
+static void
+lmc_t1_set_clock(lmc_softc_t * const sc, int ie)
+{
+	if (ie == LMC_CTL_CLOCK_SOURCE_EXT) {
+		sc->lmc_gpio &= ~(LMC_GEP_T1_TXCLOCK);
+		LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+		sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_EXT;
+		printf(LMC_PRINTF_FMT ": clock external\n",
+		       LMC_PRINTF_ARGS);
+	} else {
+		sc->lmc_gpio |= LMC_GEP_T1_TXCLOCK;
+		LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+		sc->ictl.clock_source = LMC_CTL_CLOCK_SOURCE_INT;
+		printf(LMC_PRINTF_FMT ": clock internal\n",
+		       LMC_PRINTF_ARGS);
+	}
+}
+
+static void
+lmc_t1_set_speed(lmc_softc_t * const sc, lmc_ctl_t *ctl)
+{
+	lmc_ctl_t *ictl = &sc->ictl;
+	lmc_av9110_t *av;
+
+	if (ctl == NULL) {
+		av = &ictl->cardspec.t1;
+		ictl->clock_rate = 100000;
+		av->f = ictl->clock_rate;
+		av->n = 8;
+		av->m = 25;
+		av->v = 0;
+		av->x = 0;
+		av->r = 2;
+
+		write_av9110(sc, av->n, av->m, av->v, av->x, av->r);
+		return;
+	}
+
+	av = &ctl->cardspec.t1;
+
+	if (av->f == 0)
+		return;
+
+	ictl->clock_rate = av->f;  /* really, this is the rate we are */
+	ictl->cardspec.t1 = *av;
+
+	write_av9110(sc, av->n, av->m, av->v, av->x, av->r);
+}
+
+/*
+ * return hardware link status.
+ * 0 == link is down, 1 == link is up.
+ */
+static int
+lmc_t1_get_link_status(lmc_softc_t * const sc)
+{
+	u_int16_t link_status;
+
+	/*
+	 * missing CTS?  Hmm.  If we require CTS on, we may never get the
+	 * link to come up, so omit it in this test.
+	 *
+	 * Also, it seems that with a loopback cable, DCD isn't asserted,
+	 * so just check for things like this:
+	 *	DSR _must_ be asserted.
+	 *	One of DCD or CTS must be asserted.
+	 */
+	link_status = lmc_mii_readreg(sc, 0, 16);
+
+	if ((link_status & LMC_MII16_T1_DSR) == 0)
+		return (0);
+
+	if ((link_status & (LMC_MII16_T1_CTS | LMC_MII16_T1_DCD)) == 0)
+		return (0);
+
+	return (1);
+}
+
+static void
+lmc_t1_set_link_status(lmc_softc_t * const sc, int state)
+{
+	if (state) {
+		sc->lmc_miireg16 |= (LMC_MII16_T1_DTR | LMC_MII16_T1_RTS);
+		printf(LMC_PRINTF_FMT ": asserting DTR and RTS\n",
+		       LMC_PRINTF_ARGS);
+	} else {
+		sc->lmc_miireg16 &= ~(LMC_MII16_T1_DTR | LMC_MII16_T1_RTS);
+		printf(LMC_PRINTF_FMT ": deasserting DTR and RTS\n",
+		       LMC_PRINTF_ARGS);
+	}
+
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+}
+
+/*
+ * 0 == 16bit, 1 == 32bit
+ */
+static void
+lmc_t1_set_crc_length(lmc_softc_t * const sc, int state)
+{
+	if (state == LMC_CTL_CRC_LENGTH_32) {
+		/* 32 bit */
+		sc->lmc_miireg16 |= LMC_MII16_T1_CRC;
+		sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_32;
+	} else {
+		/* 16 bit */
+		sc->lmc_miireg16 &= ~LMC_MII16_T1_CRC;
+		sc->ictl.crc_length = LMC_CTL_CRC_LENGTH_16;
+	}
+
+	lmc_mii_writereg(sc, 0, 16, sc->lmc_miireg16);
+}
+
+/*
+ * These are bits to program the T1 frequency generator
+ */
+static inline void
+write_av9110_bit(lmc_softc_t *sc, int c)
+{
+	/*
+	 * set the data bit as we need it.
+	 */
+	sc->lmc_gpio &= ~(LMC_GEP_SERIALCLK);
+	if (c & 0x01)
+		sc->lmc_gpio |= LMC_GEP_SERIAL;
+	else
+		sc->lmc_gpio &= ~(LMC_GEP_SERIAL);
+	LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+	/*
+	 * set the clock to high
+	 */
+	sc->lmc_gpio |= LMC_GEP_SERIALCLK;
+	LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+	/*
+	 * set the clock to low again.
+	 */
+	sc->lmc_gpio &= ~(LMC_GEP_SERIALCLK);
+	LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+}
+
+static void
+write_av9110(lmc_softc_t *sc, u_int32_t n, u_int32_t m, u_int32_t v,
+	     u_int32_t x, u_int32_t r)
+{
+	int i;
+
+#if 0
+	printf(LMC_PRINTF_FMT ": speed %u, %d %d %d %d %d\n",
+	       LMC_PRINTF_ARGS, sc->ictl.clock_rate,
+	       n, m, v, x, r);
+#endif
+
+	sc->lmc_gpio |= LMC_GEP_T1_GENERATOR;
+	sc->lmc_gpio &= ~(LMC_GEP_SERIAL | LMC_GEP_SERIALCLK);
+	LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+	/*
+	 * Set the TXCLOCK, GENERATOR, SERIAL, and SERIALCLK
+	 * as outputs.
+	 */
+	lmc_gpio_mkoutput(sc, (LMC_GEP_SERIAL | LMC_GEP_SERIALCLK
+			       | LMC_GEP_T1_GENERATOR));
+
+	sc->lmc_gpio &= ~(LMC_GEP_T1_GENERATOR);
+	LMC_CSR_WRITE(sc, csr_gp, sc->lmc_gpio);
+
+	/*
+	 * a shifting we will go...
+	 */
+	for (i = 0 ; i < 7 ; i++)
+		write_av9110_bit(sc, n >> i);
+	for (i = 0 ; i < 7 ; i++)
+		write_av9110_bit(sc, m >> i);
+	for (i = 0 ; i < 1 ; i++)
+		write_av9110_bit(sc, v >> i);
+	for (i = 0 ; i < 2 ; i++)
+		write_av9110_bit(sc, x >> i);
+	for (i = 0 ; i < 2 ; i++)
+		write_av9110_bit(sc, r >> i);
+	for (i = 0 ; i < 5 ; i++)
+		write_av9110_bit(sc, 0x17 >> i);
+
+	/*
+	 * stop driving serial-related signals
+	 */
+	lmc_gpio_mkinput(sc,
+			 (LMC_GEP_SERIAL | LMC_GEP_SERIALCLK
+			  | LMC_GEP_T1_GENERATOR));
+}
+
+static void
+lmc_set_protocol(lmc_softc_t * const sc, lmc_ctl_t *ctl)
+{
+	if (ctl == 0) {
+		sc->ictl.keepalive_onoff = LMC_CTL_ON;
+
+		return;
+	}
+
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+	if (ctl->keepalive_onoff != sc->ictl.keepalive_onoff) {
+		switch (ctl->keepalive_onoff) {
+		case LMC_CTL_ON:
+			printf(LMC_PRINTF_FMT ": enabling keepalive\n",
+			       LMC_PRINTF_ARGS);
+			sc->ictl.keepalive_onoff = LMC_CTL_ON;
+			sc->lmc_sppp.pp_flags = PP_CISCO | PP_KEEPALIVE;
+			break;
+		case LMC_CTL_OFF:
+			printf(LMC_PRINTF_FMT ": disabling keepalive\n",
+			       LMC_PRINTF_ARGS);
+			sc->ictl.keepalive_onoff = LMC_CTL_OFF;
+			sc->lmc_sppp.pp_flags = PP_CISCO;
+		}
+	}
+#endif
+}
diff --git a/sys/dev/pci/if_lmc_obsd.c b/sys/dev/pci/if_lmc_obsd.c
new file mode 100644
index 00000000000..534616400d2
--- /dev/null
+++ b/sys/dev/pci/if_lmc_obsd.c
@@ -0,0 +1,427 @@
+/*	$NetBSD: if_lmc_nbsd.c,v 1.1 1999/03/25 03:32:43 explorer Exp $	*/
+
+/*-
+ * Copyright (c) 1997-1999 LAN Media Corporation (LMC)
+ * All rights reserved.  www.lanmedia.com
+ *
+ * This code is written by Michael Graff <graff@vix.com> for LMC.
+ * The code is derived from permitted modifications to software created
+ * by Matt Thomas (matt@3am-software.com).
+ *
+ * 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 marketing or advertising materials mentioning features or
+ *    use of this software must display the following acknowledgement:
+ *      This product includes software developed by LAN Media Corporation
+ *      and its contributors.
+ * 4. Neither the name of LAN Media Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY LAN MEDIA CORPORATION 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 THE FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+/*-
+ * Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough 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.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/mbuf.h>
+#include <sys/socket.h>
+#include <sys/ioctl.h>
+#include <sys/errno.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <sys/proc.h>	/* only for declaration of wakeup() used by vm.h */
+#if defined(__FreeBSD__)
+#include <machine/clock.h>
+#elif defined(__bsdi__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <sys/device.h>
+#endif
+
+#if defined(__NetBSD__)
+#include <dev/pci/pcidevs.h>
+#include "rnd.h"
+#if NRND > 0
+#include <sys/rnd.h>
+#endif
+#endif
+
+#if defined(__OpenBSD__)
+#include <dev/pci/pcidevs.h>
+#endif
+
+#include <net/if.h>
+#include <net/if_types.h>
+#include <net/if_dl.h>
+#include <net/netisr.h>
+
+#include "bpfilter.h"
+#if NBPFILTER > 0
+#include <net/bpf.h>
+#include <net/bpfdesc.h>
+#endif
+
+#include <vm/vm.h>
+#include <vm/vm_param.h>
+#include <vm/vm_kern.h>
+
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <net/if_sppp.h>
+#endif
+
+#if defined(__bsdi__)
+#if INET
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#endif
+
+#include <net/netisr.h>
+#include <net/if.h>
+#include <net/netisr.h>
+#include <net/if_types.h>
+#include <net/if_p2p.h>
+#include <net/if_c_hdlc.h>
+#endif
+
+#if defined(__FreeBSD__)
+#include <vm/pmap.h>
+#include <pci.h>
+#if NPCI > 0
+#include <pci/pcivar.h>
+#include <pci/dc21040reg.h>
+#define INCLUDE_PATH_PREFIX "pci/"
+#endif
+#endif /* __FreeBSD__ */
+
+#if defined(__bsdi__)
+#include <i386/pci/ic/dc21040.h>
+#include <i386/isa/isa.h>
+#include <i386/isa/icu.h>
+#include <i386/isa/dma.h>
+#include <i386/isa/isavar.h>
+#include <i386/pci/pci.h>
+
+#define	INCLUDE_PATH_PREFIX	"i386/pci/"
+#endif /* __bsdi__ */
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+#include <machine/bus.h>
+#if defined(__alpha__) && defined(__NetBSD__)
+#include <machine/intr.h>
+#endif
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+#include <dev/ic/dc21040reg.h>
+#define	INCLUDE_PATH_PREFIX	"dev/pci/"
+#endif /* __NetBSD__ */
+
+/*
+ * Sigh.  Every OS puts these in different places.  NetBSD and FreeBSD use
+ * a C preprocessor that allows this hack, but BSDI does not.  Grr.
+ */
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+#include INCLUDE_PATH_PREFIX "if_lmc_types.h"
+#include INCLUDE_PATH_PREFIX "if_lmcioctl.h"
+#include INCLUDE_PATH_PREFIX "if_lmcvar.h"
+#else /* BSDI */
+#include "i386/pci/if_lmctypes.h"
+#include "i386/pci/if_lmcioctl.h"
+#include "i386/pci/if_lmcvar.h"
+#endif
+
+/*
+ * This file is INCLUDED (gross, I know, but...)
+ */
+
+static void lmc_shutdown(void *arg);
+
+static int
+lmc_pci_probe(struct device *parent,
+#if defined (__BROKEN_INDIRECT_CONFIG) || defined(__OpenBSD__)
+	       void *match,
+#else
+	       struct cfdata *match,
+#endif
+	       void *aux)
+{
+	struct pci_attach_args *pa = (struct pci_attach_args *)aux;
+	u_int32_t id;
+
+	/*
+	 * check first for the DEC chip we expect to find.  We expect
+	 * 21140A, pass 2.2 or higher.
+	 */
+	if (PCI_VENDORID(pa->pa_id) != PCI_VENDOR_DEC)
+		return 0;
+	if (PCI_CHIPID(pa->pa_id) != PCI_PRODUCT_DEC_21140)
+		return 0;
+	id = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CFRV) & 0xff;
+	if (id < 0x22)
+		return 0;
+
+	/*
+	 * Next, check the subsystem ID and see if it matches what we
+	 * expect.
+	 */
+	id = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SSID);
+	if (PCI_VENDORID(id) != PCI_VENDOR_LMC)
+		return 0;
+	if ((PCI_CHIPID(id) != PCI_PRODUCT_LMC_HSSI)
+	    && (PCI_CHIPID(id) != PCI_PRODUCT_LMC_DS3)
+	    && (PCI_CHIPID(id) != PCI_PRODUCT_LMC_SSI))
+		return 0;
+
+	return 10; /* must be > than any other tulip driver */
+}
+
+static void  lmc_pci_attach(struct device * const parent,
+			     struct device * const self, void * const aux);
+
+struct cfattach lmc_ca = {
+    sizeof(lmc_softc_t), lmc_pci_probe, lmc_pci_attach
+};
+
+struct cfdriver lmc_cd = {
+	0, "lmc", DV_IFNET
+};
+
+static void
+lmc_pci_attach(struct device * const parent,
+		struct device * const self, void * const aux)
+{
+	u_int32_t revinfo, cfdainfo, id, ssid;
+	pci_intr_handle_t intrhandle;
+	const char *intrstr;
+#if !defined(LMC_IOMAPPED)
+	vm_offset_t pa_csrs;
+#endif
+	unsigned csroffset = LMC_PCI_CSROFFSET;
+	unsigned csrsize = LMC_PCI_CSRSIZE;
+	lmc_csrptr_t csr_base;
+	lmc_spl_t s;
+	lmc_intrfunc_t (*intr_rtn)(void *) = lmc_intr_normal;
+	lmc_softc_t * const sc = (lmc_softc_t *) self;
+	struct pci_attach_args * const pa = (struct pci_attach_args *) aux;
+	extern lmc_media_t lmc_hssi_media;
+	extern lmc_media_t lmc_ds3_media;
+	extern lmc_media_t lmc_t1_media;
+
+	revinfo  = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CFRV) & 0xFF;
+	id       = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CFID);
+	cfdainfo = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_CFDA);
+	ssid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SSID);
+
+	switch (PCI_CHIPID(ssid)) {
+	case PCI_PRODUCT_LMC_HSSI:
+		printf(": Lan Media Corporation HSSI\n");
+		sc->lmc_media = &lmc_hssi_media;
+		break;
+	case PCI_PRODUCT_LMC_DS3:
+		printf(": Lan Media Corporation DS3\n");
+		sc->lmc_media = &lmc_ds3_media;
+		break;
+	case PCI_PRODUCT_LMC_SSI:
+		printf(": Lan Media Corporation SSI\n");
+		sc->lmc_media = &lmc_t1_media;
+		break;
+	}
+
+        sc->lmc_pci_busno = parent;
+        sc->lmc_pci_devno = pa->pa_device;
+
+	sc->lmc_chipid = LMC_21140A;
+	sc->lmc_features |= LMC_HAVE_STOREFWD;
+	if (sc->lmc_chipid == LMC_21140A && revinfo <= 0x22)
+		sc->lmc_features |= LMC_HAVE_RXBADOVRFLW;
+
+	if (cfdainfo & (TULIP_CFDA_SLEEP | TULIP_CFDA_SNOOZE)) {
+		cfdainfo &= ~(TULIP_CFDA_SLEEP | TULIP_CFDA_SNOOZE);
+		pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_CFDA, cfdainfo);
+		DELAY(11 * 1000);
+	}
+
+	bcopy(self->dv_xname, sc->lmc_if.if_xname, IFNAMSIZ);
+	sc->lmc_if.if_softc = sc;
+	sc->lmc_pc = pa->pa_pc;
+
+	sc->lmc_revinfo = revinfo;
+	sc->lmc_if.if_softc = sc;
+
+	csr_base = 0;
+	{
+		bus_space_tag_t iot, memt;
+		bus_space_handle_t ioh, memh;
+		int ioh_valid, memh_valid;
+
+#if defined(__OpenBSD__)
+                pci_chipset_tag_t pc = pa->pa_pc;
+		bus_addr_t lmcbase;
+		bus_size_t lmcsize;
+		int retval;
+#endif
+
+#if defined(__NetBSD__)
+
+		ioh_valid = (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO,
+					    0, &iot, &ioh, NULL, NULL) == 0);
+		memh_valid = (pci_mapreg_map(pa, PCI_CBMA,
+					     PCI_MAPREG_TYPE_MEM |
+					     PCI_MAPREG_MEM_TYPE_32BIT,
+					     0, &memt, &memh, NULL,
+					     NULL) == 0);
+#elif defined(__OpenBSD__)
+		ioh_valid = 0;
+		memh_valid = 0;
+		csr_base = 0;
+
+	        iot = pa->pa_iot;
+		retval = pci_io_find(pc, pa->pa_tag, PCI_CBIO, &lmcbase, &lmcsize);
+
+		if(!retval)
+			retval = bus_space_map(pa->pa_iot, lmcbase, lmcsize, 0, &ioh);
+		ioh_valid = (retval == 0);
+
+		if(!ioh_valid) {	/* Can this if just be removed? */
+			memt = pa->pa_memt;
+			retval = pci_mem_find(pc, pa->pa_tag, PCI_CBMA, &lmcbase, &lmcsize, NULL);
+			if(!retval)
+				retval = bus_space_map(pa->pa_memt, lmcbase, lmcsize, 0, &memh);
+
+			memh_valid = (retval == 0);
+		}
+#endif
+
+
+		if (memh_valid) {
+			sc->lmc_bustag = memt;
+			sc->lmc_bushandle = memh;
+		} else if (ioh_valid) {
+			sc->lmc_bustag = iot;
+			sc->lmc_bushandle = ioh;
+		} else {
+			printf("%s: unable to map device registers\n",
+			       sc->lmc_dev.dv_xname);
+			return;
+		}
+	}
+
+	lmc_initcsrs(sc, csr_base + csroffset, csrsize);
+	lmc_initring(sc, &sc->lmc_rxinfo, sc->lmc_rxdescs,
+		       LMC_RXDESCS);
+	lmc_initring(sc, &sc->lmc_txinfo, sc->lmc_txdescs,
+		       LMC_TXDESCS);
+
+	lmc_gpio_mkinput(sc, 0xff);
+	sc->lmc_gpio = 0;  /* drive no signals yet */
+
+	sc->lmc_media->defaults(sc);
+
+	sc->lmc_media->set_link_status(sc, 0); /* down */
+
+	/*
+	 * Make sure there won't be any interrupts or such...
+	 */
+	LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET);
+
+	/*
+	 * Wait 10 microseconds (actually 50 PCI cycles but at 
+	 * 33MHz that comes to two microseconds but wait a
+	 * bit longer anyways)
+	 */
+	DELAY(100);
+
+	lmc_read_macaddr(sc);
+	printf("%s: pass %d.%d, serial " LMC_EADDR_FMT "\n",
+	       sc->lmc_dev.dv_xname,
+	       (sc->lmc_revinfo & 0xF0) >> 4, sc->lmc_revinfo & 0x0F,
+	       LMC_EADDR_ARGS(sc->lmc_enaddr));
+
+        if (pci_intr_map(pa->pa_pc, pa->pa_intrtag, pa->pa_intrpin,
+                         pa->pa_intrline, &intrhandle)) {
+		 printf("%s: couldn't map interrupt\n",
+			sc->lmc_dev.dv_xname);
+		return;
+	}
+	intrstr = pci_intr_string(pa->pa_pc, intrhandle);
+
+#if defined(__OpenBSD__)
+	sc->lmc_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_NET,
+						intr_rtn, sc, self->dv_xname);
+#else
+	sc->lmc_ih = pci_intr_establish(pa->pa_pc, intrhandle, IPL_NET,
+						intr_rtn, sc);
+#endif
+
+	if (sc->lmc_ih == NULL) {
+		printf("%s: couldn't establish interrupt",
+		       sc->lmc_dev.dv_xname);
+		if (intrstr != NULL)
+			printf(" at %s", intrstr);
+		printf("\n");
+		return;
+	}
+	printf("%s: interrupting at %s\n", sc->lmc_dev.dv_xname,
+	       intrstr);
+
+        sc->lmc_ats = shutdownhook_establish(lmc_shutdown, sc);
+        if (sc->lmc_ats == NULL)
+		printf("%s: warning: couldn't establish shutdown hook\n",
+		       sc->lmc_xname);
+
+	s = LMC_RAISESPL();
+	lmc_dec_reset(sc);
+	lmc_reset(sc);
+	lmc_attach(sc);
+	LMC_RESTORESPL(s);
+}
+
+static void
+lmc_shutdown(void *arg)
+{
+	lmc_softc_t * const sc = arg;
+	LMC_CSR_WRITE(sc, csr_busmode, TULIP_BUSMODE_SWRESET);
+	DELAY(10);
+
+	sc->lmc_miireg16 = 0;  /* deassert ready, and all others too */
+	lmc_led_on(sc, LMC_MII16_LED_ALL);
+}
diff --git a/sys/dev/pci/if_lmc_types.h b/sys/dev/pci/if_lmc_types.h
new file mode 100644
index 00000000000..8858f1c9b05
--- /dev/null
+++ b/sys/dev/pci/if_lmc_types.h
@@ -0,0 +1,88 @@
+/*	$NetBSD: if_lmc_types.h,v 1.2 1999/03/25 04:09:33 explorer Exp $	*/
+
+/*-
+ * Copyright (c) 1997-1999 LAN Media Corporation (LMC)
+ * All rights reserved.  www.lanmedia.com
+ *
+ * This code is written by Michael Graff <graff@vix.com> for LMC.
+ * The code is derived from permitted modifications to software created
+ * by Matt Thomas (matt@3am-software.com).
+ *
+ * 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 marketing or advertising materials mentioning features or
+ *    use of this software must display the following acknowledgement:
+ *      This product includes software developed by LAN Media Corporation
+ *      and its contributors.
+ * 4. Neither the name of LAN Media Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY LAN MEDIA CORPORATION 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 THE FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+#ifndef LMC_TYPES_H
+#define LMC_TYPES_H
+
+/*
+ * NetBSD uses _KERNEL, FreeBSD uses KERNEL.
+ */
+#if defined(_KERNEL) && (defined(__NetBSD__) || defined(__OpenBSD__))
+#define LMC_IS_KERNEL
+#endif
+#if defined(KERNEL) && defined(__FreeBSD__)
+#define LMC_IS_KERNEL
+#endif
+#if defined(__KERNEL__) && defined(linux)
+#define LMC_IS_KERNEL
+#endif
+
+#if defined(LMC_IS_KERNEL)
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+typedef bus_addr_t lmc_csrptr_t;
+#else
+#ifdef LMC_IOMAPPED
+typedef u_int16_t lmc_csrptr_t;
+#else
+typedef volatile u_int32_t *lmc_csrptr_t;
+#endif
+#endif
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+#define	lmc_intrfunc_t	int
+#endif /* __NetBSD__ */
+
+#if defined(__FreeBSD__)
+#define	lmc_intrfunc_t	void
+#endif /* __FreeBSD__ */
+
+#if defined(__bsdi__)
+#define	lmc_intrfunc_t	int
+#endif /* __bsdi__ */
+
+typedef struct lmc___softc lmc_softc_t;
+typedef struct lmc___media lmc_media_t;
+typedef struct lmc_ringinfo lmc_ringinfo_t;
+
+#endif /* LMC_IS_KERNEL */
+
+typedef struct lmc___ctl lmc_ctl_t;
+
+#endif /* LMC_TYPES_H */
diff --git a/sys/dev/pci/if_lmcioctl.h b/sys/dev/pci/if_lmcioctl.h
new file mode 100644
index 00000000000..f1921d1f502
--- /dev/null
+++ b/sys/dev/pci/if_lmcioctl.h
@@ -0,0 +1,243 @@
+/*	$NetBSD: if_lmcioctl.h,v 1.2 1999/03/25 04:09:34 explorer Exp $	*/
+
+/*-
+ * Copyright (c) 1997-1999 LAN Media Corporation (LMC)
+ * All rights reserved.  www.lanmedia.com
+ *
+ * This code is written by Michael Graff <graff@vix.com> for LMC.
+ * The code is derived from permitted modifications to software created
+ * by Matt Thomas (matt@3am-software.com).
+ *
+ * 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 marketing or advertising materials mentioning features or
+ *    use of this software must display the following acknowledgement:
+ *      This product includes software developed by LAN Media Corporation
+ *      and its contributors.
+ * 4. Neither the name of LAN Media Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY LAN MEDIA CORPORATION 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 THE FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+#if defined(linux)
+/*
+ * IOCTLs that we use for linux.  The structures passed in really should
+ * go into an OS inspecific file, since BSD will use these as well.
+ *
+ * Under linux, the 16 reserved-for-device IOCTLs are numbered 0x89f0
+ * through 0x89ff.
+ */
+#define LMCIOCGINFO	0x89f0	/* get current state */
+#define LMCIOCSINFO	0x89f1	/* set state to user provided values */
+
+#else
+/*
+ * IOCTLs for the sane world.
+ */
+#define LMCIOCGINFO	_IOW('i', 240, struct ifreq)
+#define LMCIOCSINFO	_IOWR('i', 241, struct ifreq)
+
+#endif
+
+typedef struct {
+	u_int32_t	n;
+	u_int32_t	m;
+	u_int32_t	v;
+	u_int32_t	x;
+	u_int32_t	r;
+	u_int32_t	f;
+	u_int32_t	exact;
+} lmc_av9110_t;
+
+/*
+ * Common structure passed to the ioctl code.
+ */
+struct lmc___ctl {
+	u_int32_t	cardtype;
+	u_int32_t	clock_source;		/* HSSI, T1 */
+	u_int32_t	clock_rate;		/* T1 */
+	u_int32_t	crc_length;
+	u_int32_t	cable_length;		/* DS3 */
+	u_int32_t	scrambler_onoff;	/* DS3 */
+	u_int32_t	cable_type;		/* T1 */
+	u_int32_t	keepalive_onoff;	/* protocol */
+	u_int32_t	ticks;			/* ticks/sec */
+	union {
+		lmc_av9110_t	t1;
+	} cardspec;
+};
+
+#define LMC_CTL_CARDTYPE_LMC5200	0	/* HSSI */
+#define LMC_CTL_CARDTYPE_LMC5245	1	/* DS3 */
+#define LMC_CTL_CARDTYPE_LMC1000	2	/* T1, E1, etc */
+
+#define LMC_CTL_OFF			0	/* generic OFF value */
+#define LMC_CTL_ON			1	/* generic ON value */
+
+#define LMC_CTL_CLOCK_SOURCE_EXT	0	/* clock off line */
+#define LMC_CTL_CLOCK_SOURCE_INT	1	/* internal clock */
+
+#define LMC_CTL_CRC_LENGTH_16		16
+#define LMC_CTL_CRC_LENGTH_32		32
+
+#define LMC_CTL_CABLE_LENGTH_LT_100FT	0	/* DS3 cable < 100 feet */
+#define LMC_CTL_CABLE_LENGTH_GT_100FT	1	/* DS3 cable >= 100 feet */
+
+/*
+ * These are not in the least IOCTL related, but I want them common.
+ */
+/*
+ * assignments for the GPIO register on the DEC chip (common)
+ */
+#define LMC_GEP_INIT		0x01 /* 0: */
+#define LMC_GEP_RESET		0x02 /* 1: */
+#define LMC_GEP_LOAD		0x10 /* 4: */
+#define LMC_GEP_DP		0x20 /* 5: */
+#define LMC_GEP_SERIAL		0x40 /* 6: serial out */
+#define LMC_GEP_SERIALCLK	0x80 /* 7: serial clock */
+
+/*
+ * HSSI GPIO assignments
+ */
+#define LMC_GEP_HSSI_ST		0x04 /* 2: receive timing sense (deprecated) */
+#define LMC_GEP_HSSI_CLOCK	0x08 /* 3: clock source */
+
+/*
+ * T1 GPIO assignments
+ */
+#define LMC_GEP_T1_GENERATOR	0x04 /* 2: enable prog freq gen serial i/f */
+#define LMC_GEP_T1_TXCLOCK	0x08 /* 3: provide clock on TXCLOCK output */
+
+/*
+ * Common MII16 bits
+ */
+#define LMC_MII16_LED0         0x0080
+#define LMC_MII16_LED1         0x0100
+#define LMC_MII16_LED2         0x0200
+#define LMC_MII16_LED3         0x0400  /* Error, and the red one */
+#define LMC_MII16_LED_ALL      0x0780  /* LED bit mask */
+#define LMC_MII16_FIFO_RESET   0x0800
+
+/*
+ * definitions for HSSI
+ */
+#define LMC_MII16_HSSI_TA      0x0001
+#define LMC_MII16_HSSI_CA      0x0002
+#define LMC_MII16_HSSI_LA      0x0004
+#define LMC_MII16_HSSI_LB      0x0008
+#define LMC_MII16_HSSI_LC      0x0010
+#define LMC_MII16_HSSI_TM      0x0020
+#define LMC_MII16_HSSI_CRC     0x0040
+
+/*
+ * assignments for the MII register 16 (DS3)
+ */
+#define LMC_MII16_DS3_ZERO	0x0001
+#define LMC_MII16_DS3_TRLBK	0x0002
+#define LMC_MII16_DS3_LNLBK	0x0004
+#define LMC_MII16_DS3_RAIS	0x0008
+#define LMC_MII16_DS3_TAIS	0x0010
+#define LMC_MII16_DS3_BIST	0x0020
+#define LMC_MII16_DS3_DLOS	0x0040
+#define LMC_MII16_DS3_CRC	0x1000
+#define LMC_MII16_DS3_SCRAM	0x2000
+
+/*
+ * And T1
+ */
+#define LMC_MII16_T1_DTR	0x0001	/* DTR output RW */
+#define LMC_MII16_T1_DSR	0x0002	/* DSR input RO */
+#define LMC_MII16_T1_RTS	0x0004	/* RTS output RW */
+#define LMC_MII16_T1_CTS	0x0008	/* CTS input RO */
+#define LMC_MII16_T1_DCD	0x0010	/* DCD input RO */
+#define LMC_MII16_T1_RI		0x0020	/* RI input RO */
+#define LMC_MII16_T1_CRC	0x0040	/* CRC select */
+
+/*
+ * bits 0x0080 through 0x0800 are generic, and described
+ * above with LMC_MII16_LED[0123] _LED_ALL, and _FIFO_RESET
+ */
+#define LMC_MII16_T1_LL		0x1000	/* LL output RW */
+#define LMC_MII16_T1_RL		0x2000	/* RL output RW */
+#define LMC_MII16_T1_TM		0x4000	/* TM input RO */
+#define LMC_MII16_T1_LOOP	0x8000	/* loopback enable RW */
+
+/*
+ * Some of the MII16 bits are mirrored in the MII17 register as well,
+ * but let's keep thing seperate for now, and get only the cable from
+ * the MII17.
+ */
+#define LMC_MII17_T1_CABLE_MASK	0x0038	/* mask to extract the cable type */
+#define LMC_MII17_T1_CABLE_SHIFT 3	/* shift to extract the cable type */
+
+/*
+ * framer register 0 and 7 (7 is latched and reset on read)
+ */
+#define LMC_FRAMER_REG0_DLOS	0x80	/* digital loss of service */
+#define LMC_FRAMER_REG0_OOFS	0x40	/* out of frame sync */
+#define LMC_FRAMER_REG0_AIS	0x20	/* alarm indication signal */
+#define LMC_FRAMER_REG0_CIS	0x10	/* channel idle */
+#define LMC_FRAMER_REG0_LOC	0x08	/* loss of clock */
+
+#define LMC_CARDTYPE_UNKNOWN	-1
+#define LMC_CARDTYPE_HSSI	 1	/* probed card is a HSSI card */
+#define LMC_CARDTYPE_DS3	 2	/* probed card is a DS3 card */
+#define LMC_CARDTYPE_T1		 3	/* probed card is a T1 card */
+
+#if defined(LMC_IS_KERNEL) /* defined in if_lmc_types.h */
+
+/*
+ * media independent methods to check on media status, link, light LEDs,
+ * etc.
+ */
+struct lmc___media {
+	void	(* init)(lmc_softc_t * const);
+	void	(* defaults)(lmc_softc_t * const);
+	void	(* set_status)(lmc_softc_t * const, lmc_ctl_t *);
+	void	(* set_clock_source)(lmc_softc_t * const, int);
+	void	(* set_speed)(lmc_softc_t * const, lmc_ctl_t *);
+	void	(* set_cable_length)(lmc_softc_t * const, int);
+	void	(* set_scrambler)(lmc_softc_t * const, int);
+	int	(* get_link_status)(lmc_softc_t * const);
+	void	(* set_link_status)(lmc_softc_t * const, int);
+	void	(* set_crc_length)(lmc_softc_t * const, int);
+};
+
+u_int32_t lmc_mii_readreg(lmc_softc_t * const sc, u_int32_t devaddr,
+			  u_int32_t regno);
+void lmc_mii_writereg(lmc_softc_t * const sc, u_int32_t devaddr,
+		      u_int32_t regno, u_int32_t data);
+void lmc_initcsrs(lmc_softc_t * const sc, lmc_csrptr_t csr_base,
+		  size_t csr_size);
+void lmc_dec_reset(lmc_softc_t * const sc);
+void lmc_reset(lmc_softc_t * const sc);
+void lmc_led_on(lmc_softc_t * const sc, u_int32_t led);
+void lmc_led_off(lmc_softc_t * const sc, u_int32_t led);
+void lmc_gpio_mkinput(lmc_softc_t * const sc, u_int32_t bits);
+void lmc_gpio_mkoutput(lmc_softc_t * const sc, u_int32_t bits);
+lmc_intrfunc_t lmc_intr_normal(void *);
+int lmc_read_macaddr(lmc_softc_t * const sc);
+void lmc_attach(lmc_softc_t * const sc);
+void lmc_initring(lmc_softc_t * const sc, lmc_ringinfo_t * const ri,
+		  tulip_desc_t *descs, int ndescs);
+
+#endif /* LMC_IS_KERNEL */
diff --git a/sys/dev/pci/if_lmcvar.h b/sys/dev/pci/if_lmcvar.h
new file mode 100644
index 00000000000..f1693079fcf
--- /dev/null
+++ b/sys/dev/pci/if_lmcvar.h
@@ -0,0 +1,609 @@
+/*	$NetBSD: if_lmcvar.h,v 1.1 1999/03/25 03:32:43 explorer Exp $	*/
+
+/*-
+ * Copyright (c) 1997-1999 LAN Media Corporation (LMC)
+ * All rights reserved.  www.lanmedia.com
+ *
+ * This code is written by Michael Graff <graff@vix.com> for LMC.
+ * The code is derived from permitted modifications to software created
+ * by Matt Thomas (matt@3am-software.com).
+ *
+ * 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 marketing or advertising materials mentioning features or
+ *    use of this software must display the following acknowledgement:
+ *      This product includes software developed by LAN Media Corporation
+ *      and its contributors.
+ * 4. Neither the name of LAN Media Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY LAN MEDIA CORPORATION 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 THE FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+
+/*-
+ * Copyright (c) 1994-1997 Matt Thomas (matt@3am-software.com)
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough 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.
+ */
+
+#if !defined(_DEVAR_H)
+#define _DEVAR_H
+
+#define LMC_MTU 1500
+#define PPP_HEADER_LEN 4
+#define BIG_PACKET
+
+/*
+ * Intel CPUs should use I/O mapped access.  XXXMLG Is this true on NetBSD
+ * too?
+ */
+#if defined(__i386__)
+#define	LMC_IOMAPPED
+#endif
+
+/*
+ * This turns on all sort of debugging stuff and make the
+ * driver much larger.
+ */
+#if 0
+#define LMC_DEBUG
+#define DP(x)	printf x
+#else
+#define DP(x)
+#endif
+
+/*
+ * the dec chip has its own idea of what a receive error is, but we don't
+ * want to use it, as it will get the crc error wrong when 16-bit
+ * crcs are used.  So, we only care about certain conditions.
+ */
+#ifndef TULIP_DSTS_RxMIIERR
+#define TULIP_DSTS_RxMIIERR 0x00000008
+#endif
+#define LMC_DSTS_ERRSUM (TULIP_DSTS_RxMIIERR)
+
+/*
+ * This is the PCI configuration support.
+ */
+#define	PCI_CFID	0x00	/* Configuration ID */
+#define	PCI_CFCS	0x04	/* Configurtion Command/Status */
+#define	PCI_CFRV	0x08	/* Configuration Revision */
+#define	PCI_CFLT	0x0c	/* Configuration Latency Timer */
+#define	PCI_CBIO	0x10	/* Configuration Base IO Address */
+#define	PCI_CBMA	0x14	/* Configuration Base Memory Address */
+#define PCI_SSID	0x2c	/* subsystem config register */
+#define	PCI_CFIT	0x3c	/* Configuration Interrupt */
+#define	PCI_CFDA	0x40	/* Configuration Driver Area */
+
+#define	LMC_HZ	10
+
+#ifndef TULIP_GP_PINSET
+#define TULIP_GP_PINSET			0x00000100L
+#endif
+#ifndef TULIP_BUSMODE_READMULTIPLE
+#define TULIP_BUSMODE_READMULTIPLE	0x00200000L
+#endif
+
+#if defined(__NetBSD__)
+
+#include "rnd.h"
+#if NRND > 0
+#include <sys/rnd.h>
+#endif
+
+#endif /* NetBSD */
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+#define LMC_CSR_READ(sc, csr) \
+    bus_space_read_4((sc)->lmc_bustag, (sc)->lmc_bushandle, (sc)->lmc_csrs.csr)
+#define LMC_CSR_WRITE(sc, csr, val) \
+    bus_space_write_4((sc)->lmc_bustag, (sc)->lmc_bushandle, (sc)->lmc_csrs.csr, (val))
+
+#define LMC_CSR_READBYTE(sc, csr) \
+    bus_space_read_1((sc)->lmc_bustag, (sc)->lmc_bushandle, (sc)->lmc_csrs.csr)
+#define LMC_CSR_WRITEBYTE(sc, csr, val) \
+    bus_space_write_1((sc)->lmc_bustag, (sc)->lmc_bushandle, (sc)->lmc_csrs.csr, (val))
+#endif /* __NetBSD__ */
+
+#ifdef LMC_IOMAPPED
+#define	LMC_EISA_CSRSIZE	16
+#define	LMC_EISA_CSROFFSET	0
+#define	LMC_PCI_CSRSIZE	8
+#define	LMC_PCI_CSROFFSET	0
+
+#if !defined(__NetBSD__) && !defined(__OpenBSD__)
+#define	LMC_CSR_READ(sc, csr)			(inl((sc)->lmc_csrs.csr))
+#define	LMC_CSR_WRITE(sc, csr, val)   	outl((sc)->lmc_csrs.csr, val)
+
+#define	LMC_CSR_READBYTE(sc, csr)		(inb((sc)->lmc_csrs.csr))
+#define	LMC_CSR_WRITEBYTE(sc, csr, val)	outb((sc)->lmc_csrs.csr, val)
+#endif /* __NetBSD__ */
+
+#else /* LMC_IOMAPPED */
+
+#define	LMC_PCI_CSRSIZE	8
+#define	LMC_PCI_CSROFFSET	0
+
+#if !defined(__NetBSD__) && !defined(__OpenBSD__)
+/*
+ * macros to read and write CSRs.  Note that the "0 +" in
+ * READ_CSR is to prevent the macro from being an lvalue
+ * and WRITE_CSR shouldn't be assigned from.
+ */
+#define	LMC_CSR_READ(sc, csr)		(0 + *(sc)->lmc_csrs.csr)
+#define	LMC_CSR_WRITE(sc, csr, val)	((void)(*(sc)->lmc_csrs.csr = (val)))
+#endif /* __NetBSD__ */
+
+#endif /* LMC_IOMAPPED */
+
+/*
+ * This structure contains "pointers" for the registers on
+ * the various 21x4x chips.  CSR0 through CSR8 are common
+ * to all chips.  After that, it gets messy...
+ */
+typedef struct {
+    lmc_csrptr_t csr_busmode;			/* CSR0 */
+    lmc_csrptr_t csr_txpoll;			/* CSR1 */
+    lmc_csrptr_t csr_rxpoll;			/* CSR2 */
+    lmc_csrptr_t csr_rxlist;			/* CSR3 */
+    lmc_csrptr_t csr_txlist;			/* CSR4 */
+    lmc_csrptr_t csr_status;			/* CSR5 */
+    lmc_csrptr_t csr_command;			/* CSR6 */
+    lmc_csrptr_t csr_intr;			/* CSR7 */
+    lmc_csrptr_t csr_missed_frames;		/* CSR8 */
+    lmc_csrptr_t csr_9;			/* CSR9 */
+    lmc_csrptr_t csr_10;			/* CSR10 */
+    lmc_csrptr_t csr_11;			/* CSR11 */
+    lmc_csrptr_t csr_12;			/* CSR12 */
+    lmc_csrptr_t csr_13;			/* CSR13 */
+    lmc_csrptr_t csr_14;			/* CSR14 */
+    lmc_csrptr_t csr_15;			/* CSR15 */
+} lmc_regfile_t;
+
+#define	csr_enetrom		csr_9	/* 21040 */
+#define	csr_reserved		csr_10	/* 21040 */
+#define	csr_full_duplex		csr_11	/* 21040 */
+#define	csr_bootrom		csr_10	/* 21041/21140A/?? */
+#define	csr_gp			csr_12	/* 21140* */
+#define	csr_watchdog		csr_15	/* 21140* */
+#define	csr_gp_timer		csr_11	/* 21041/21140* */
+#define	csr_srom_mii		csr_9	/* 21041/21140* */
+#define	csr_sia_status		csr_12	/* 2104x */
+#define csr_sia_connectivity	csr_13	/* 2104x */
+#define csr_sia_tx_rx		csr_14	/* 2104x */
+#define csr_sia_general		csr_15	/* 2104x */
+
+/*
+ * While 21x4x allows chaining of its descriptors, this driver
+ * doesn't take advantage of it.  We keep the descriptors in a
+ * traditional FIFO ring.  
+ */
+struct lmc_ringinfo {
+    tulip_desc_t *ri_first;	/* first entry in ring */
+    tulip_desc_t *ri_last;	/* one after last entry */
+    tulip_desc_t *ri_nextin;	/* next to processed by host */
+    tulip_desc_t *ri_nextout;	/* next to processed by adapter */
+    int ri_max;
+    int ri_free;
+};
+
+/*
+ * The 21040 has a stupid restriction in that the receive
+ * buffers must be longword aligned.  But since Ethernet
+ * headers are not a multiple of longwords in size this forces
+ * the data to non-longword aligned.  Since IP requires the
+ * data to be longword aligned, we need to copy it after it has
+ * been DMA'ed in our memory.
+ *
+ * Since we have to copy it anyways, we might as well as allocate
+ * dedicated receive space for the input.  This allows to use a
+ * small receive buffer size and more ring entries to be able to
+ * better keep with a flood of tiny Ethernet packets.
+ *
+ * The receive space MUST ALWAYS be a multiple of the page size.
+ * And the number of receive descriptors multiplied by the size
+ * of the receive buffers must equal the recevive space.  This
+ * is so that we can manipulate the page tables so that even if a
+ * packet wraps around the end of the receive space, we can 
+ * treat it as virtually contiguous.
+ *
+ * The above used to be true (the stupid restriction is still true)
+ * but we gone to directly DMA'ing into MBUFs (unless it's on an 
+ * architecture which can't handle unaligned accesses) because with
+ * 100Mb/s cards the copying is just too much of a hit.
+ */
+
+#define	LMC_RXDESCS		48
+#define	LMC_TXDESCS		128
+#define	LMC_RXQ_TARGET	32
+#if LMC_RXQ_TARGET >= LMC_RXDESCS
+#error LMC_RXQ_TARGET must be less than LMC_RXDESCS
+#endif
+
+#define	LMC_RX_BUFLEN		((MCLBYTES < 2048 ? MCLBYTES : 2048) - 16)
+
+/*
+ * The various controllers support.  Technically the DE425 is just
+ * a 21040 on EISA.  But since it remarkably difference from normal
+ * 21040s, we give it its own chip id.
+ */
+
+typedef enum {
+    LMC_21140, LMC_21140A,
+    LMC_CHIPID_UNKNOWN
+} lmc_chipid_t;
+
+#define	LMC_BIT(b)		(1L << ((int)(b)))
+
+typedef struct {
+    /*
+     * Transmit Statistics
+     */
+    u_int32_t dot3StatsSingleCollisionFrames;
+    u_int32_t dot3StatsMultipleCollisionFrames;
+    u_int32_t dot3StatsSQETestErrors;
+    u_int32_t dot3StatsDeferredTransmissions;
+    u_int32_t dot3StatsLateCollisions;
+    u_int32_t dot3StatsExcessiveCollisions;
+    u_int32_t dot3StatsCarrierSenseErrors;
+    u_int32_t dot3StatsInternalMacTransmitErrors;
+    u_int32_t dot3StatsInternalTransmitUnderflows;	/* not in rfc1650! */
+    u_int32_t dot3StatsInternalTransmitBabbles;		/* not in rfc1650! */
+    /*
+     * Receive Statistics
+     */
+    u_int32_t dot3StatsMissedFrames;	/* not in rfc1650! */
+    u_int32_t dot3StatsAlignmentErrors;
+    u_int32_t dot3StatsFCSErrors;
+    u_int32_t dot3StatsFrameTooLongs;
+    u_int32_t dot3StatsInternalMacReceiveErrors;
+} lmc_dot3_stats_t;
+
+/*
+ * Now to important stuff.  This is softc structure (where does softc
+ * come from??? No idea) for the tulip device.  
+ *
+ */
+struct lmc___softc {
+#if defined(__bsdi__)
+    struct device lmc_dev;		/* base device */
+    struct isadev lmc_id;		/* ISA device */
+    struct intrhand lmc_ih;		/* intrrupt vectoring */
+    struct atshutdown lmc_ats;		/* shutdown hook */
+    struct	p2pcom lmc_p2pcom;	/* point-to-point common stuff */
+    
+#define lmc_if	lmc_p2pcom.p2p_if	/* network-visible interface */
+#endif /* __bsdi__ */
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+    struct device lmc_dev;		/* base device */
+    void *lmc_ih;			/* intrrupt vectoring */
+    void *lmc_ats;			/* shutdown hook */
+    bus_space_tag_t lmc_bustag;
+    bus_space_handle_t lmc_bushandle;	/* CSR region handle */
+    pci_chipset_tag_t lmc_pc;
+#endif
+
+#if defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__)
+    struct sppp lmc_sppp;
+#define lmc_if lmc_sppp.pp_if
+#endif
+
+    u_int8_t lmc_enaddr[6];		/* yes, a small hack... */
+    lmc_regfile_t lmc_csrs;
+    volatile u_int32_t lmc_txtick;
+    volatile u_int32_t lmc_rxtick;
+    u_int32_t lmc_flags;
+
+    u_int32_t lmc_features;	/* static bits indicating features of chip */
+    u_int32_t lmc_intrmask;	/* our copy of csr_intr */
+    u_int32_t lmc_cmdmode;	/* our copy of csr_cmdmode */
+    u_int32_t lmc_last_system_error : 3;	/* last system error (only value is LMC_SYSTEMERROR is also set) */
+    u_int32_t lmc_system_errors;	/* number of system errors encountered */
+    u_int32_t lmc_statusbits;	/* status bits from CSR5 that may need to be printed */
+
+    u_int8_t lmc_revinfo;			/* revision of chip */
+    u_int8_t lmc_cardtype;		/* LMC_CARDTYPE_HSSI or ..._DS3 */
+    u_int32_t		lmc_gpio_io;	/* state of in/out settings */
+    u_int32_t		lmc_gpio;	/* state of outputs */
+    u_int8_t lmc_gp;
+
+    lmc_chipid_t lmc_chipid;		/* type of chip we are using */
+    u_int32_t lmc_miireg16;
+    struct ifqueue lmc_txq;
+    struct ifqueue lmc_rxq;
+    lmc_dot3_stats_t lmc_dot3stats;
+    lmc_ringinfo_t lmc_rxinfo;
+    lmc_ringinfo_t lmc_txinfo;
+    u_int8_t lmc_rombuf[128];
+    lmc_media_t *lmc_media;
+    lmc_ctl_t ictl;
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+    struct device *lmc_pci_busno;	/* needed for multiport boards */
+#else
+    u_int8_t lmc_pci_busno;		/* needed for multiport boards */
+#endif
+    u_int8_t lmc_pci_devno;		/* needed for multiport boards */
+#if defined(__FreeBSD__)
+    tulip_desc_t *lmc_rxdescs;
+    tulip_desc_t *lmc_txdescs;
+#else
+    tulip_desc_t lmc_rxdescs[LMC_RXDESCS];
+    tulip_desc_t lmc_txdescs[LMC_TXDESCS];
+#endif
+#if defined(__NetBSD__) && NRND > 0
+    rndsource_element_t    lmc_rndsource;
+#endif
+};
+
+/*
+ * lmc_flags
+ */
+#define	LMC_IFUP		0x00000001
+#define	LMC_00000002		0x00000002
+#define	LMC_00000004		0x00000004
+#define	LMC_00000008		0x00000008
+#define	LMC_00000010		0x00000010
+#define	LMC_MODEMOK		0x00000020
+#define	LMC_00000040		0x00000040
+#define	LMC_00000080		0x00000080
+#define	LMC_RXACT		0x00000100
+#define	LMC_INRESET		0x00000200
+#define	LMC_NEEDRESET		0x00000400
+#define	LMC_00000800		0x00000800
+#define	LMC_00001000		0x00001000
+#define	LMC_00002000		0x00002000
+#define	LMC_WANTTXSTART		0x00004000
+#define	LMC_NEWTXTHRESH		0x00008000
+#define	LMC_NOAUTOSENSE		0x00010000
+#define	LMC_PRINTLINKUP		0x00020000
+#define	LMC_LINKUP		0x00040000
+#define	LMC_RXBUFSLOW		0x00080000
+#define	LMC_NOMESSAGES		0x00100000
+#define	LMC_SYSTEMERROR		0x00200000
+#define	LMC_TIMEOUTPENDING	0x00400000
+#define	LMC_00800000		0x00800000
+#define	LMC_01000000		0x01000000
+#define	LMC_02000000		0x02000000
+#define	LMC_RXIGNORE		0x04000000
+#define	LMC_08000000		0x08000000
+#define	LMC_10000000		0x10000000
+#define	LMC_20000000		0x20000000
+#define	LMC_40000000		0x40000000
+#define	LMC_80000000		0x80000000
+
+/*
+ * lmc_features
+ */
+#define	LMC_HAVE_GPR		0x00000001	/* have gp register (140[A]) */
+#define	LMC_HAVE_RXBADOVRFLW	0x00000002	/* RX corrupts on overflow */
+#define	LMC_HAVE_POWERMGMT	0x00000004	/* Snooze/sleep modes */
+#define	LMC_HAVE_MII		0x00000008	/* Some medium on MII */
+#define	LMC_HAVE_SIANWAY	0x00000010	/* SIA does NWAY */
+#define	LMC_HAVE_DUALSENSE	0x00000020	/* SIA senses both AUI & TP */
+#define	LMC_HAVE_SIAGP		0x00000040	/* SIA has a GP port */
+#define	LMC_HAVE_BROKEN_HASH	0x00000080	/* Broken Multicast Hash */
+#define	LMC_HAVE_ISVSROM	0x00000100	/* uses ISV SROM Format */
+#define	LMC_HAVE_BASEROM	0x00000200	/* Board ROM can be cloned */
+#define	LMC_HAVE_SLAVEDROM	0x00000400	/* Board ROM cloned */
+#define	LMC_HAVE_SLAVEDINTR	0x00000800	/* Board slaved interrupt */
+#define	LMC_HAVE_SHAREDINTR	0x00001000	/* Board shares interrupts */
+#define	LMC_HAVE_OKROM		0x00002000	/* ROM was recognized */
+#define	LMC_HAVE_NOMEDIA	0x00004000	/* did not detect any media */
+#define	LMC_HAVE_STOREFWD	0x00008000	/* have CMD_STOREFWD */
+#define	LMC_HAVE_SIA100		0x00010000	/* has LS100 in SIA status */
+
+static const char * const lmc_system_errors[] = {
+    "parity error",
+    "master abort",
+    "target abort",
+    "reserved #3",
+    "reserved #4",
+    "reserved #5",
+    "reserved #6",
+    "reserved #7",
+};
+
+static const char * const lmc_status_bits[] = {
+    NULL,
+    "transmit process stopped",
+    NULL,
+    "transmit jabber timeout",
+
+    NULL,
+    "transmit underflow",
+    NULL,
+    "receive underflow",
+
+    "receive process stopped",
+    "receive watchdog timeout",
+    NULL,
+    NULL,
+
+    "link failure",
+    NULL,
+    NULL,
+};
+
+/*
+ * This driver supports a maximum of 32 tulip boards.
+ * This should be enough for the forseeable future.
+ */
+#define	LMC_MAX_DEVICES	32
+
+#if defined(__FreeBSD__)
+typedef void ifnet_ret_t;
+typedef int ioctl_cmd_t;
+static lmc_softc_t *tulips[LMC_MAX_DEVICES];
+#if BSD >= 199506
+#define LMC_IFP_TO_SOFTC(ifp) ((lmc_softc_t *)((ifp)->if_softc))
+#if NBPFILTER > 0
+#define	LMC_BPF_MTAP(sc, m)	bpf_mtap(&(sc)->lmc_sppp.pp_if, m)
+#define	LMC_BPF_TAP(sc, p, l)	bpf_tap(&(sc)->lmc_sppp.pp_if, p, l)
+#define	LMC_BPF_ATTACH(sc)	bpfattach(&(sc)->lmc_sppp.pp_if, DLT_PPP, PPP_HEADER_LEN)
+#endif
+#define	LMC_VOID_INTRFUNC
+#define	IFF_NOTRAILERS		0
+#define	CLBYTES			PAGE_SIZE
+#define	LMC_EADDR_FMT		"%6D"
+#define	LMC_EADDR_ARGS(addr)	addr, ":"
+#else
+extern int bootverbose;
+#define LMC_IFP_TO_SOFTC(ifp)         (LMC_UNIT_TO_SOFTC((ifp)->if_unit))
+#include <sys/devconf.h>
+#define	LMC_DEVCONF
+#endif
+#define	LMC_UNIT_TO_SOFTC(unit)	(tulips[unit])
+#define	LMC_BURSTSIZE(unit)		pci_max_burst_len
+#define	loudprintf			if (bootverbose) printf
+#endif
+
+#if defined(__bsdi__)
+typedef int ifnet_ret_t;
+typedef u_long ioctl_cmd_t;
+extern struct cfdriver lmccd;
+#define	LMC_UNIT_TO_SOFTC(unit)	((lmc_softc_t *)lmccd.cd_devs[unit])
+#define LMC_IFP_TO_SOFTC(ifp)		(LMC_UNIT_TO_SOFTC((ifp)->if_unit))
+#define	loudprintf			aprint_verbose
+#define	MCNT(x) (sizeof(x) / sizeof(struct ifmedia_entry))
+#define	lmc_unit	lmc_dev.dv_unit
+#define	lmc_name	lmc_p2pcom.p2p_if.if_name
+#define LMC_BPF_MTAP(sc, m)
+#define LMC_BPF_TAP(sc, p, l)
+#define	LMC_BPF_ATTACH(sc)
+#endif	/* __bsdi__ */
+
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+typedef void ifnet_ret_t;
+typedef u_long ioctl_cmd_t;
+extern struct cfattach lmc_ca;
+extern struct cfdriver lmc_cd;
+#define	LMC_UNIT_TO_SOFTC(unit)	((lmc_softc_t *) lmc_cd.cd_devs[unit])
+#define LMC_IFP_TO_SOFTC(ifp)         ((lmc_softc_t *)((ifp)->if_softc))
+#define	lmc_unit			lmc_dev.dv_unit
+#define	lmc_xname			lmc_if.if_xname
+#define	LMC_RAISESPL()		splnet()
+#define	LMC_RAISESOFTSPL()		splsoftnet()
+#define	LMC_RESTORESPL(s)		splx(s)
+/*	#define	lmc_enaddr			lmc_enaddr */
+#define	loudprintf			printf
+#define	LMC_PRINTF_FMT		"%s"
+#define	LMC_PRINTF_ARGS		sc->lmc_xname
+#if defined(__alpha__)
+/* XXX XXX NEED REAL DMA MAPPING SUPPORT XXX XXX */
+#define LMC_KVATOPHYS(sc, va)		alpha_XXX_dmamap((vm_offset_t)(va))
+#endif
+#endif	/* __NetBSD__ */
+
+#ifndef LMC_PRINTF_FMT
+#define	LMC_PRINTF_FMT		"%s%d"
+#endif
+#ifndef LMC_PRINTF_ARGS
+#define	LMC_PRINTF_ARGS		sc->lmc_name, sc->lmc_unit
+#endif
+
+#ifndef LMC_BURSTSIZE
+#define	LMC_BURSTSIZE(unit)		3
+#endif
+
+#ifndef lmc_unit
+#define	lmc_unit	lmc_sppp.pp_if.if_unit
+#endif
+
+#ifndef lmc_name
+#define	lmc_name	lmc_sppp.pp_if.if_name
+#endif
+
+#if !defined(lmc_bpf)
+#if defined(__NetBSD__) || defined(__FreeBSD__) | defined(__OpenBSD__)
+#define	lmc_bpf	lmc_sppp.pp_if.if_bpf
+#endif
+#if defined(__bsdi__)
+#define lmc_bpf	lmc_if.if_bpf
+#endif
+#endif
+
+#if !defined(LMC_KVATOPHYS)
+#define	LMC_KVATOPHYS(sc, va)	vtophys(va)
+#endif
+
+#ifndef LMC_RAISESPL
+#define	LMC_RAISESPL()		splimp()
+#endif
+#ifndef LMC_RAISESOFTSPL
+#define	LMC_RAISESOFTSPL()		splnet()
+#endif
+#ifndef TULUP_RESTORESPL
+#define	LMC_RESTORESPL(s)		splx(s)
+#endif
+
+/*
+ * While I think FreeBSD's 2.2 change to the bpf is a nice simplification,
+ * it does add yet more conditional code to this driver.  Sigh.
+ */
+#if !defined(LMC_BPF_MTAP) && NBPFILTER > 0
+#define	LMC_BPF_MTAP(sc, m)	bpf_mtap((sc)->lmc_bpf, m)
+#define	LMC_BPF_TAP(sc, p, l)	bpf_tap((sc)->lmc_bpf, p, l)
+#define	LMC_BPF_ATTACH(sc)	bpfattach(&(sc)->lmc_bpf, &(sc)->lmc_sppp.pp_if, DLT_PPP, PPP_HEADER_LEN)
+#endif
+
+/*
+ * However, this change to FreeBSD I am much less enamored with.
+ */
+#if !defined(LMC_EADDR_FMT)
+#define	LMC_EADDR_FMT		"%s"
+#define	LMC_EADDR_ARGS(addr)	ether_sprintf(addr)
+#endif
+
+#define	LMC_CRC32_POLY	0xEDB88320UL	/* CRC-32 Poly -- Little Endian */
+#define	LMC_MAX_TXSEG		30
+
+#define	LMC_ADDREQUAL(a1, a2) \
+	(((u_int16_t *)a1)[0] == ((u_int16_t *)a2)[0] \
+	 && ((u_int16_t *)a1)[1] == ((u_int16_t *)a2)[1] \
+	 && ((u_int16_t *)a1)[2] == ((u_int16_t *)a2)[2])
+#define	LMC_ADDRBRDCST(a1) \
+	(((u_int16_t *)a1)[0] == 0xFFFFU \
+	 && ((u_int16_t *)a1)[1] == 0xFFFFU \
+	 && ((u_int16_t *)a1)[2] == 0xFFFFU)
+
+typedef int lmc_spl_t;
+
+#endif /* !defined(_DEVAR_H) */