The ar and sr devices have moved to sys/dev/.

8 files changed, 0 insertions, 6645 deletions

diff --git a/sys/i386/isa/if_ar.c b/sys/i386/isa/if_ar.c
deleted file mode 100644
index e610972..0000000
--- a/sys/i386/isa/if_ar.c
+++ /dev/null
@@ -1,2520 +0,0 @@
-/*
- * Copyright (c) 1995 - 2001 John Hay.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the author nor the names of any co-contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY John Hay ``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 John Hay BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-/*
- * Programming assumptions and other issues.
- *
- * The descriptors of a DMA channel will fit in a 16K memory window.
- *
- * The buffers of a transmit DMA channel will fit in a 16K memory window.
- *
- * Only the ISA bus cards with X.21 and V.35 is tested.
- *
- * When interface is going up, handshaking is set and it is only cleared
- * when the interface is down'ed.
- *
- * There should be a way to set/reset Raw HDLC/PPP, Loopback, DCE/DTE,
- * internal/external clock, etc.....
- *
- */
-
-#include "opt_netgraph.h"
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/malloc.h>
-#include <sys/mbuf.h>
-#include <sys/socket.h>
-#include <sys/sockio.h>
-#include <sys/module.h>
-#include <sys/bus.h>
-#include <machine/bus.h>
-#include <machine/resource.h>
-#include <machine/bus_pio.h>
-#include <machine/bus_memio.h>
-#include <sys/rman.h>
-
-#include <isa/isavar.h>
-#include "isa_if.h"
-
-#include <net/if.h>
-#ifdef NETGRAPH
-#include <netgraph/ng_message.h>
-#include <netgraph/netgraph.h>
-#include <sys/syslog.h>
-#include <i386/isa/if_ar.h>
-#else /* NETGRAPH */
-#include <net/if_sppp.h>
-#include <net/bpf.h>
-#endif /* NETGRAPH */
-
-#include <machine/md_var.h>
-
-#include <i386/isa/ic/hd64570.h>
-#include <i386/isa/if_arregs.h>
-
-#ifdef TRACE
-#define TRC(x)               x
-#else
-#define TRC(x)
-#endif
-
-#define TRCL(x)              x
-
-#define PPP_HEADER_LEN       4
-
-struct ar_softc {
-#ifndef	NETGRAPH
-	struct sppp ifsppp;
-#endif /* NETGRAPH */
-	int unit;            /* With regards to all ar devices */
-	int subunit;         /* With regards to this card */
-	struct ar_hardc *hc;
-
-	struct buf_block {
-		u_int txdesc;        /* On card address */
-		u_int txstart;       /* On card address */
-		u_int txend;         /* On card address */
-		u_int txtail;        /* Index of first unused buffer */
-		u_int txmax;         /* number of usable buffers/descriptors */
-		u_int txeda;         /* Error descriptor addresses */
-	}block[AR_TX_BLOCKS];
-
-	char  xmit_busy;     /* Transmitter is busy */
-	char  txb_inuse;     /* Number of tx blocks currently in use */
-	u_char txb_new;      /* Index to where new buffer will be added */
-	u_char txb_next_tx;  /* Index to next block ready to tx */
-
-	u_int rxdesc;        /* On card address */
-	u_int rxstart;       /* On card address */
-	u_int rxend;         /* On card address */
-	u_int rxhind;        /* Index to the head of the rx buffers. */
-	u_int rxmax;         /* number of usable buffers/descriptors */
-
-	int scano;
-	int scachan;
-	sca_regs *sca;
-#ifdef NETGRAPH
-	int	running;	/* something is attached so we are running */
-	int	dcd;		/* do we have dcd? */
-	/* ---netgraph bits --- */
-	char		nodename[NG_NODELEN + 1]; /* store our node name */
-	int		datahooks;	/* number of data hooks attached */
-	node_p		node;		/* netgraph node */
-	hook_p		hook;		/* data hook */
-	hook_p		debug_hook;
-	struct ifqueue	xmitq_hipri;	/* hi-priority transmit queue */
-	struct ifqueue	xmitq;		/* transmit queue */
-	int		flags;		/* state */
-#define	SCF_RUNNING	0x01		/* board is active */
-#define	SCF_OACTIVE	0x02		/* output is active */
-	int		out_dog;	/* watchdog cycles output count-down */
-	struct callout_handle handle;	/* timeout(9) handle */
-	u_long		inbytes, outbytes;	/* stats */
-	u_long		lastinbytes, lastoutbytes; /* a second ago */
-	u_long		inrate, outrate;	/* highest rate seen */
-	u_long		inlast;		/* last input N secs ago */
-	u_long		out_deficit;	/* output since last input */
-	u_long		oerrors, ierrors[6];
-	u_long		opackets, ipackets;
-#endif /* NETGRAPH */
-};
-
-static int	next_ar_unit = 0;
-
-#ifdef NETGRAPH
-#define DOG_HOLDOFF	6	/* dog holds off for 6 secs */
-#define QUITE_A_WHILE	300	/* 5 MINUTES */
-#define LOTS_OF_PACKETS	100
-#endif /* NETGRAPH */
-
-/*
- * This translate from irq numbers to
- * the value that the arnet card needs
- * in the lower part of the AR_INT_SEL
- * register.
- */
-static int irqtable[16] = {
-	0,	/*  0 */
-	0,	/*  1 */
-	0,	/*  2 */
-	1,	/*  3 */
-	0,	/*  4 */
-	2,	/*  5 */
-	0,	/*  6 */
-	3,	/*  7 */
-	0,	/*  8 */
-	0,	/*  9 */
-	4,	/* 10 */
-	5,	/* 11 */
-	6,	/* 12 */
-	0,	/* 13 */
-	0,	/* 14 */
-	7	/* 15 */
-};
-
-static int ar_isa_probe (device_t);
-static int ar_isa_attach (device_t);
-
-static struct isa_pnp_id ar_ids[] = {
-	{0,		NULL}
-};
-
-static device_method_t ar_methods[] = {
-	DEVMETHOD(device_probe,		ar_isa_probe),
-	DEVMETHOD(device_attach,	ar_isa_attach),
-	DEVMETHOD(device_detach,	ar_detach),
-	{ 0, 0 }
-};
-
-static driver_t ar_isa_driver = {
-	"ar",
-	ar_methods,
-	sizeof (struct ar_hardc)
-};
-
-devclass_t ar_devclass;
-
-DRIVER_MODULE(if_ar, isa, ar_isa_driver, ar_devclass, 0, 0);
-#ifndef NETGRAPH
-MODULE_DEPEND(if_ar, sppp, 1, 1, 1);
-#else
-MODULE_DEPEND(ng_sync_ar, netgraph, 1, 1, 1);
-#endif
-
-static void arintr(void *arg);
-static void ar_xmit(struct ar_softc *sc);
-#ifndef NETGRAPH
-static void arstart(struct ifnet *ifp);
-static int arioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
-static void arwatchdog(struct ifnet *ifp);
-#else	/* NETGRAPH */
-static void arstart(struct ar_softc *sc);
-static void arwatchdog(struct ar_softc *sc);
-#endif	/* NETGRAPH */
-static int ar_packet_avail(struct ar_softc *sc, int *len, u_char *rxstat);
-static void ar_copy_rxbuf(struct mbuf *m, struct ar_softc *sc, int len);
-static void ar_eat_packet(struct ar_softc *sc, int single);
-static void ar_get_packets(struct ar_softc *sc);
-
-static int ar_read_pim_iface(volatile struct ar_hardc *hc, int channel);
-static void ar_up(struct ar_softc *sc);
-static void ar_down(struct ar_softc *sc);
-static void arc_init(struct ar_hardc *hc);
-static void ar_init_sca(struct ar_hardc *hc, int scano);
-static void ar_init_msci(struct ar_softc *sc);
-static void ar_init_rx_dmac(struct ar_softc *sc);
-static void ar_init_tx_dmac(struct ar_softc *sc);
-static void ar_dmac_intr(struct ar_hardc *hc, int scano, u_char isr);
-static void ar_msci_intr(struct ar_hardc *hc, int scano, u_char isr);
-static void ar_timer_intr(struct ar_hardc *hc, int scano, u_char isr);
-
-#ifdef	NETGRAPH
-static	void	ngar_watchdog_frame(void * arg);
-static	void	ngar_init(void* ignored);
-
-static ng_constructor_t	ngar_constructor;
-static ng_rcvmsg_t	ngar_rcvmsg;
-static ng_shutdown_t	ngar_shutdown;
-static ng_newhook_t	ngar_newhook;
-/*static ng_findhook_t	ngar_findhook; */
-static ng_connect_t	ngar_connect;
-static ng_rcvdata_t	ngar_rcvdata;
-static ng_disconnect_t	ngar_disconnect;
-	
-static struct ng_type typestruct = {
-	NG_ABI_VERSION,
-	NG_AR_NODE_TYPE,
-	NULL,
-	ngar_constructor,
-	ngar_rcvmsg,
-	ngar_shutdown,
-	ngar_newhook,
-	NULL,
-	ngar_connect,
-	ngar_rcvdata,
-	ngar_disconnect,
-	NULL
-};
-
-static int	ngar_done_init = 0;
-#endif /* NETGRAPH */
-
-/*
- * Probe to see if it is there.
- * Get its information and fill it in.
- */
-static int
-ar_isa_probe(device_t device)
-{
-	int error;
-	u_long membase, memsize, port_start, port_count;
-
-	error = ISA_PNP_PROBE(device_get_parent(device), device, ar_ids);
-	if(error == ENXIO || error == 0)
-		return (error);
-
-	if((error = ar_allocate_ioport(device, 0, ARC_IO_SIZ))) {
-		return (ENXIO);
-	}
-
-	/*
-	 * Now see if the card is realy there.
-	 *
-	 * XXX For now I just check the undocumented ports
-	 * for "570". We will probably have to do more checking.
-	 */
-	error = bus_get_resource(device, SYS_RES_IOPORT, 0, &port_start,
-	    &port_count);
-
-	if((inb(port_start + AR_ID_5) != '5') ||
-	   (inb(port_start + AR_ID_7) != '7') ||
-	   (inb(port_start + AR_ID_0) != '0')) {
-		ar_deallocate_resources(device);
-		return (ENXIO);
-	}
-	membase = bus_get_resource_start(device, SYS_RES_MEMORY, 0);
-	memsize = inb(port_start + AR_REV);
-	memsize = 1 << ((memsize & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
-	memsize *= ARC_WIN_SIZ;
-	error = bus_set_resource(device, SYS_RES_MEMORY, 0, membase, memsize);
-	ar_deallocate_resources(device);
-
-	return (error);
-}
-
-/*
- * Malloc memory for the softc structures.
- * Reset the card to put it in a known state.
- * Register the ports on the adapter.
- * Fill in the info for each port.
- * Attach each port to sppp and bpf.
- */
-static int
-ar_isa_attach(device_t device)
-{
-	u_int tmp;
-	u_long irq, junk;
-	struct ar_hardc *hc;
-
-	hc = (struct ar_hardc *)device_get_softc(device);
-	if(ar_allocate_ioport(device, 0, ARC_IO_SIZ))
-		return (ENXIO);
-	hc->bt = rman_get_bustag(hc->res_ioport);
-	hc->bh = rman_get_bushandle(hc->res_ioport);
-
-	hc->iobase = rman_get_start(hc->res_ioport);
-
-	tmp = inb(hc->iobase + AR_BMI);
-	hc->bustype = tmp & AR_BUS_MSK;
-	hc->memsize = (tmp & AR_MEM_MSK) >> AR_MEM_SHFT;
-	hc->memsize = 1 << hc->memsize;
-	hc->memsize <<= 16;
-	hc->interface[0] = (tmp & AR_IFACE_MSK);
-	hc->interface[1] = hc->interface[0];
-	hc->interface[2] = hc->interface[0];
-	hc->interface[3] = hc->interface[0];
-	tmp = inb(hc->iobase + AR_REV);
-	hc->revision = tmp & AR_REV_MSK;
-	hc->winsize = 1 << ((tmp & AR_WSIZ_MSK) >> AR_WSIZ_SHFT);
-	hc->winsize *= ARC_WIN_SIZ;
-	hc->winmsk = hc->winsize - 1;
-	hc->numports = inb(hc->iobase + AR_PNUM);
-	hc->handshake = inb(hc->iobase + AR_HNDSH);
-
-	if(ar_allocate_memory(device, 0, hc->winsize))
-		return (ENXIO);
-
-	hc->mem_start = rman_get_virtual(hc->res_memory);
-	hc->mem_end = hc->mem_start + hc->winsize;
-	hc->cunit = device_get_unit(device);
-
-	switch(hc->interface[0]) {
-	case AR_IFACE_EIA_232:
-		printf("ar%d: The EIA 232 interface is not supported.\n",
-			hc->cunit);
-		ar_deallocate_resources(device);
-		return (ENXIO);
-	case AR_IFACE_V_35:
-		break;
-	case AR_IFACE_EIA_530:
-		printf("ar%d: WARNING: The EIA 530 interface is untested.\n",
-			hc->cunit);
-		break;
-	case AR_IFACE_X_21:
-		break;
-	case AR_IFACE_COMBO:
-		printf("ar%d: WARNING: The COMBO interface is untested.\n",
-			hc->cunit);
-		break;
-	}
-
-	/*
-	 * Do a little sanity check.
-	 */
-	if((hc->numports > NPORT) || (hc->memsize > (512*1024))) {
-		ar_deallocate_resources(device);
-		return (ENXIO);
-	}
-
-	if(ar_allocate_irq(device, 0, 1))
-		return (ENXIO);
-
-	if(bus_get_resource(device, SYS_RES_IRQ, 0, &irq, &junk)) {
-		ar_deallocate_resources(device);
-		return (ENXIO);
-	}
-	hc->isa_irq = irq;
-
-	if(ar_attach(device)) {
-		ar_deallocate_resources(device);
-		return (ENXIO);
-	}
-
-	return (0);
-}
-
-int
-ar_attach(device_t device)
-{
-	struct ar_hardc *hc;
-	struct ar_softc *sc;
-#ifndef	NETGRAPH
-	struct ifnet *ifp;
-	char *iface;
-#endif	/* NETGRAPH */
-	int unit;
-
-	hc = (struct ar_hardc *)device_get_softc(device);
-
-	printf("arc%d: %uK RAM, %u ports, rev %u.\n",
-		hc->cunit,
-		hc->memsize/1024,
-		hc->numports,
-		hc->revision);
-	
-	arc_init(hc);
-
-	if(BUS_SETUP_INTR(device_get_parent(device), device, hc->res_irq,
-	    INTR_TYPE_NET, arintr, hc, &hc->intr_cookie) != 0)
-		return (1);
-
-	sc = hc->sc;
-
-	for(unit=0;unit<hc->numports;unit+=NCHAN)
-		ar_init_sca(hc, unit / NCHAN);
-
-	/*
-	 * Now configure each port on the card.
-	 */
-	for(unit=0;unit<hc->numports;sc++,unit++) {
-		sc->hc = hc;
-		sc->subunit = unit;
-		sc->unit = next_ar_unit;
-		next_ar_unit++;
-		sc->scano = unit / NCHAN;
-		sc->scachan = unit%NCHAN;
-
-		ar_init_rx_dmac(sc);
-		ar_init_tx_dmac(sc);
-		ar_init_msci(sc);
-
-#ifndef	NETGRAPH
-		ifp = &sc->ifsppp.pp_if;
-
-		ifp->if_softc = sc;
-		ifp->if_unit = sc->unit;
-		ifp->if_name = "ar";
-		ifp->if_mtu = PP_MTU;
-		ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
-		ifp->if_ioctl = arioctl;
-		ifp->if_start = arstart;
-		ifp->if_watchdog = arwatchdog;
-
-		sc->ifsppp.pp_flags = PP_KEEPALIVE;
-
-		switch(hc->interface[unit]) {
-		default: iface = "UNKNOWN"; break;
-		case AR_IFACE_EIA_232: iface = "EIA-232"; break;
-		case AR_IFACE_V_35: iface = "EIA-232 or V.35"; break;
-		case AR_IFACE_EIA_530: iface = "EIA-530"; break;
-		case AR_IFACE_X_21: iface = "X.21"; break;
-		case AR_IFACE_COMBO: iface = "COMBO X.21 / EIA-530"; break;
-		}
-
-		printf("ar%d: Adapter %d, port %d, interface %s.\n",
-			sc->unit,
-			hc->cunit,
-			sc->subunit,
-			iface);
-
-		sppp_attach((struct ifnet *)&sc->ifsppp);
-		if_attach(ifp);
-
-		bpfattach(ifp, DLT_PPP, PPP_HEADER_LEN);
-#else	/* NETGRAPH */
-		/*
-		 * we have found a node, make sure our 'type' is availabe.
-		 */
-		if (ngar_done_init == 0) ngar_init(NULL);
-		if (ng_make_node_common(&typestruct, &sc->node) != 0)
-			return (1);
-		sprintf(sc->nodename, "%s%d", NG_AR_NODE_TYPE, sc->unit);
-		if (ng_name_node(sc->node, sc->nodename)) {
-			NG_NODE_UNREF(sc->node); /* drop it again */
-			return (1);
-		}
-		NG_NODE_SET_PRIVATE(sc->node, sc);
-		callout_handle_init(&sc->handle);
-		sc->xmitq.ifq_maxlen = IFQ_MAXLEN;
-		sc->xmitq_hipri.ifq_maxlen = IFQ_MAXLEN;
-		mtx_init(&sc->xmitq.ifq_mtx, "ar_xmitq", MTX_DEF);
-		mtx_init(&sc->xmitq_hipri.ifq_mtx, "ar_xmitq_hipri", MTX_DEF);
-		sc->running = 0;
-#endif	/* NETGRAPH */
-	}
-
-	if(hc->bustype == AR_BUS_ISA)
-		ARC_SET_OFF(hc->iobase);
-
-	return (0);
-}
-
-int
-ar_detach(device_t device)
-{
-	device_t parent = device_get_parent(device);
-	struct ar_hardc *hc = device_get_softc(device);
-
-	if (hc->intr_cookie != NULL) {
-		if (BUS_TEARDOWN_INTR(parent, device,
-			hc->res_irq, hc->intr_cookie) != 0) {
-				printf("intr teardown failed.. continuing\n");
-		}
-		hc->intr_cookie = NULL;
-	}
-
-	/*
-	 * deallocate any system resources we may have
-	 * allocated on behalf of this driver.
-	 */
-	FREE(hc->sc, M_DEVBUF);
-	hc->sc = NULL;
-	hc->mem_start = NULL;
-	return (ar_deallocate_resources(device));
-}
-
-int
-ar_allocate_ioport(device_t device, int rid, u_long size)
-{
-	struct ar_hardc *hc = device_get_softc(device);
-
-	hc->rid_ioport = rid;
-	hc->res_ioport = bus_alloc_resource(device, SYS_RES_IOPORT,
-			&hc->rid_ioport, 0ul, ~0ul, size, RF_ACTIVE);
-	if (hc->res_ioport == NULL) {
-		goto errexit;
-	}
-	return (0);
-
-errexit:
-	ar_deallocate_resources(device);
-	return (ENXIO);
-}
-
-int
-ar_allocate_irq(device_t device, int rid, u_long size)
-{
-	struct ar_hardc *hc = device_get_softc(device);
-
-	hc->rid_irq = rid;
-	hc->res_irq = bus_alloc_resource(device, SYS_RES_IRQ,
-			&hc->rid_irq, 0ul, ~0ul, 1, RF_SHAREABLE|RF_ACTIVE);
-	if (hc->res_irq == NULL) {
-		goto errexit;
-	}
-	return (0);
-
-errexit:
-	ar_deallocate_resources(device);
-	return (ENXIO);
-}
-
-int
-ar_allocate_memory(device_t device, int rid, u_long size)
-{
-	struct ar_hardc *hc = device_get_softc(device);
-
-	hc->rid_memory = rid;
-	hc->res_memory = bus_alloc_resource(device, SYS_RES_MEMORY,
-			&hc->rid_memory, 0ul, ~0ul, size, RF_ACTIVE);
-	if (hc->res_memory == NULL) {
-		goto errexit;
-	}
-	return (0);
-
-errexit:
-	ar_deallocate_resources(device);
-	return (ENXIO);
-}
-
-int
-ar_allocate_plx_memory(device_t device, int rid, u_long size)
-{
-	struct ar_hardc *hc = device_get_softc(device);
-
-	hc->rid_plx_memory = rid;
-	hc->res_plx_memory = bus_alloc_resource(device, SYS_RES_MEMORY,
-			&hc->rid_plx_memory, 0ul, ~0ul, size, RF_ACTIVE);
-	if (hc->res_plx_memory == NULL) {
-		goto errexit;
-	}
-	return (0);
-
-errexit:
-	ar_deallocate_resources(device);
-	return (ENXIO);
-}
-
-int
-ar_deallocate_resources(device_t device)
-{
-	struct ar_hardc *hc = device_get_softc(device);
-
-	if (hc->res_irq != 0) {
-		bus_deactivate_resource(device, SYS_RES_IRQ,
-			hc->rid_irq, hc->res_irq);
-		bus_release_resource(device, SYS_RES_IRQ,
-			hc->rid_irq, hc->res_irq);
-		hc->res_irq = 0;
-	}
-	if (hc->res_ioport != 0) {
-		bus_deactivate_resource(device, SYS_RES_IOPORT,
-			hc->rid_ioport, hc->res_ioport);
-		bus_release_resource(device, SYS_RES_IOPORT,
-			hc->rid_ioport, hc->res_ioport);
-		hc->res_ioport = 0;
-	}
-	if (hc->res_memory != 0) {
-		bus_deactivate_resource(device, SYS_RES_MEMORY,
-			hc->rid_memory, hc->res_memory);
-		bus_release_resource(device, SYS_RES_MEMORY,
-			hc->rid_memory, hc->res_memory);
-		hc->res_memory = 0;
-	}
-	if (hc->res_plx_memory != 0) {
-		bus_deactivate_resource(device, SYS_RES_MEMORY,
-			hc->rid_plx_memory, hc->res_plx_memory);
-		bus_release_resource(device, SYS_RES_MEMORY,
-			hc->rid_plx_memory, hc->res_plx_memory);
-		hc->res_plx_memory = 0;
-	}
-	return (0);
-}
-
-/*
- * First figure out which SCA gave the interrupt.
- * Process it.
- * See if there is other interrupts pending.
- * Repeat until there is no more interrupts.
- */
-static void
-arintr(void *arg)
-{
-	struct ar_hardc *hc = (struct ar_hardc *)arg;
-	sca_regs *sca;
-	u_char isr0, isr1, isr2, arisr;
-	int scano;
-
-	/* XXX Use the PCI interrupt score board register later */
-	if(hc->bustype == AR_BUS_PCI)
-		arisr = hc->orbase[AR_ISTAT * 4];
-	else
-		arisr = inb(hc->iobase + AR_ISTAT);
-
-	while(arisr & AR_BD_INT) {
-		TRC(printf("arisr = %x\n", arisr));
-		if(arisr & AR_INT_0)
-			scano = 0;
-		else if(arisr & AR_INT_1)
-			scano = 1;
-		else {
-			/* XXX Oops this shouldn't happen. */
-			printf("arc%d: Interrupted with no interrupt.\n",
-				hc->cunit);
-			return;
-		}
-		sca = hc->sca[scano];
-
-		if(hc->bustype == AR_BUS_ISA)
-			ARC_SET_SCA(hc->iobase, scano);
-
-		isr0 = sca->isr0;
-		isr1 = sca->isr1;
-		isr2 = sca->isr2;
-
-		TRC(printf("arc%d: ARINTR isr0 %x, isr1 %x, isr2 %x\n",
-			hc->cunit,
-			isr0,
-			isr1,
-			isr2));
-		if(isr0)
-			ar_msci_intr(hc, scano, isr0);
-
-		if(isr1)
-			ar_dmac_intr(hc, scano, isr1);
-
-		if(isr2)
-			ar_timer_intr(hc, scano, isr2);
-
-		/*
-		 * Proccess the second sca's interrupt if available.
-		 * Else see if there are any new interrupts.
-		 */
-		if((arisr & AR_INT_0) && (arisr & AR_INT_1))
-			arisr &= ~AR_INT_0;
-		else {
-			if(hc->bustype == AR_BUS_PCI)
-				arisr = hc->orbase[AR_ISTAT * 4];
-			else
-				arisr = inb(hc->iobase + AR_ISTAT);
-		}
-	}
-
-	if(hc->bustype == AR_BUS_ISA)
-		ARC_SET_OFF(hc->iobase);
-}
-
-
-/*
- * This will only start the transmitter. It is assumed that the data
- * is already there. It is normally called from arstart() or ar_dmac_intr().
- *
- */
-static void
-ar_xmit(struct ar_softc *sc)
-{
-#ifndef NETGRAPH
-	struct ifnet *ifp;
-#endif /* NETGRAPH */
-	dmac_channel *dmac;
-
-#ifndef NETGRAPH
-	ifp = &sc->ifsppp.pp_if;
-#endif /* NETGRAPH */
-	dmac = &sc->sca->dmac[DMAC_TXCH(sc->scachan)];
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(sc->hc->iobase, sc->scano);
-	dmac->cda = (u_short)(sc->block[sc->txb_next_tx].txdesc & 0xffff);
-
-	dmac->eda = (u_short)(sc->block[sc->txb_next_tx].txeda & 0xffff);
-	dmac->dsr = SCA_DSR_DE;
-
-	sc->xmit_busy = 1;
-
-	sc->txb_next_tx++;
-	if(sc->txb_next_tx == AR_TX_BLOCKS)
-		sc->txb_next_tx = 0;
-
-#ifndef NETGRAPH
-	ifp->if_timer = 2; /* Value in seconds. */
-#else	/* NETGRAPH */
-	sc->out_dog = DOG_HOLDOFF;	/* give ourself some breathing space*/
-#endif	/* NETGRAPH */
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_OFF(sc->hc->iobase);
-}
-
-/*
- * This function will be called from the upper level when a user add a
- * packet to be send, and from the interrupt handler after a finished
- * transmit.
- *
- * NOTE: it should run at spl_imp().
- *
- * This function only place the data in the oncard buffers. It does not
- * start the transmition. ar_xmit() does that.
- *
- * Transmitter idle state is indicated by the IFF_OACTIVE flag. The function
- * that clears that should ensure that the transmitter and its DMA is
- * in a "good" idle state.
- */
-#ifndef NETGRAPH
-static void
-arstart(struct ifnet *ifp)
-{
-	struct ar_softc *sc = ifp->if_softc;
-#else	/* NETGRAPH */
-static void
-arstart(struct ar_softc *sc)
-{
-#endif	/* NETGRAPH */
-	int i, len, tlen;
-	struct mbuf *mtx;
-	u_char *txdata;
-	sca_descriptor *txdesc;
-	struct buf_block *blkp;
-
-#ifndef NETGRAPH
-	if(!(ifp->if_flags & IFF_RUNNING))
-		return;
-#else	/* NETGRAPH */
-/* XXX */
-#endif	/* NETGRAPH */
-  
-top_arstart:
-
-	/*
-	 * See if we have space for more packets.
-	 */
-	if(sc->txb_inuse == AR_TX_BLOCKS) {
-#ifndef NETGRAPH
-		ifp->if_flags |= IFF_OACTIVE;	/* yes, mark active */
-#else	/* NETGRAPH */
-/*XXX*/		/*ifp->if_flags |= IFF_OACTIVE;*/	/* yes, mark active */
-#endif /* NETGRAPH */
-		return;
-	}
-
-#ifndef NETGRAPH
-	mtx = sppp_dequeue(ifp);
-#else	/* NETGRAPH */
-	IF_DEQUEUE(&sc->xmitq_hipri, mtx);
-	if (mtx == NULL) {
-		IF_DEQUEUE(&sc->xmitq, mtx);
-	}
-#endif /* NETGRAPH */
-	if(!mtx)
-		return;
-
-	/*
-	 * It is OK to set the memory window outside the loop because
-	 * all tx buffers and descriptors are assumed to be in the same
-	 * 16K window.
-	 */
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_MEM(sc->hc->iobase, sc->block[0].txdesc);
-
-	/*
-	 * We stay in this loop until there is nothing in the
-	 * TX queue left or the tx buffer is full.
-	 */
-	i = 0;
-	blkp = &sc->block[sc->txb_new];
-	txdesc = (sca_descriptor *)
-		(sc->hc->mem_start + (blkp->txdesc & sc->hc->winmsk));
-	txdata = (u_char *)(sc->hc->mem_start + (blkp->txstart & sc->hc->winmsk));
-	for(;;) {
-		len = mtx->m_pkthdr.len;
-
-		TRC(printf("ar%d: ARstart len %u\n", sc->unit, len));
-
-		/*
-		 * We can do this because the tx buffers don't wrap.
-		 */
-		m_copydata(mtx, 0, len, txdata);
-		tlen = len;
-		while(tlen > AR_BUF_SIZ) {
-			txdesc->stat = 0;
-			txdesc->len = AR_BUF_SIZ;
-			tlen -= AR_BUF_SIZ;
-			txdesc++;
-			txdata += AR_BUF_SIZ;
-			i++;
-		}
-		/* XXX Move into the loop? */
-		txdesc->stat = SCA_DESC_EOM;
-		txdesc->len = tlen;
-		txdesc++;
-		txdata += AR_BUF_SIZ;
-		i++;
-
-#ifndef NETGRAPH
-		if(ifp->if_bpf)
-			bpf_mtap(ifp, mtx);
-		m_freem(mtx);
-		++sc->ifsppp.pp_if.if_opackets;
-#else	/* NETGRAPH */
-		m_freem(mtx);
-		sc->outbytes += len;
-		++sc->opackets;
-#endif	/* NETGRAPH */
-
-		/*
-		 * Check if we have space for another mbuf.
-		 * XXX This is hardcoded. A packet won't be larger
-		 * than 3 buffers (3 x 512).
-		 */
-		if((i + 3) >= blkp->txmax)
-			break;
-
-#ifndef NETGRAPH
-		mtx = sppp_dequeue(ifp);
-#else	/* NETGRAPH */
-		IF_DEQUEUE(&sc->xmitq_hipri, mtx);
-		if (mtx == NULL) {
-			IF_DEQUEUE(&sc->xmitq, mtx);
-		}
-#endif /* NETGRAPH */
-		if(!mtx)
-			break;
-	}
-
-	blkp->txtail = i;
-
-	/*
-	 * Mark the last descriptor, so that the SCA know where
-	 * to stop.
-	 */
-	txdesc--;
-	txdesc->stat |= SCA_DESC_EOT;
-
-	txdesc = (sca_descriptor *)blkp->txdesc;
-	blkp->txeda = (u_short)((u_int)&txdesc[i]);
-
-#if 0
-	printf("ARstart: %p desc->cp %x\n", &txdesc->cp, txdesc->cp);
-	printf("ARstart: %p desc->bp %x\n", &txdesc->bp, txdesc->bp);
-	printf("ARstart: %p desc->bpb %x\n", &txdesc->bpb, txdesc->bpb);
-	printf("ARstart: %p desc->len %x\n", &txdesc->len, txdesc->len);
-	printf("ARstart: %p desc->stat %x\n", &txdesc->stat, txdesc->stat);
-#endif
-
-	sc->txb_inuse++;
-	sc->txb_new++;
-	if(sc->txb_new == AR_TX_BLOCKS)
-		sc->txb_new = 0;
-
-	if(sc->xmit_busy == 0)
-		ar_xmit(sc);
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_OFF(sc->hc->iobase);
-
-	goto top_arstart;
-}
-
-#ifndef	NETGRAPH
-static int
-arioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
-{
-	int s, error;
-	int was_up, should_be_up;
-	struct ar_softc *sc = ifp->if_softc;
-
-	TRC(printf("ar%d: arioctl.\n", ifp->if_unit);)
-
-	was_up = ifp->if_flags & IFF_RUNNING;
-
-	error = sppp_ioctl(ifp, cmd, data);
-	TRC(printf("ar%d: ioctl: ifsppp.pp_flags = %x, if_flags %x.\n", 
-		ifp->if_unit, ((struct sppp *)ifp)->pp_flags, ifp->if_flags);)
-	if(error)
-		return (error);
-
-	if((cmd != SIOCSIFFLAGS) && cmd != (SIOCSIFADDR))
-		return (0);
-
-	TRC(printf("ar%d: arioctl %s.\n", ifp->if_unit, 
-		(cmd == SIOCSIFFLAGS) ? "SIOCSIFFLAGS" : "SIOCSIFADDR");)
-
-	s = splimp();
-	should_be_up = ifp->if_flags & IFF_RUNNING;
-
-	if(!was_up && should_be_up) {
-		/* Interface should be up -- start it. */
-		ar_up(sc);
-		arstart(ifp);
-		/* XXX Maybe clear the IFF_UP flag so that the link
-		 * will only go up after sppp lcp and ipcp negotiation.
-		 */
-	} else if(was_up && !should_be_up) {
-		/* Interface should be down -- stop it. */
-		ar_down(sc);
-		sppp_flush(ifp);
-	}
-	splx(s);
-	return (0);
-}
-#endif	/* NETGRAPH */
-
-/*
- * This is to catch lost tx interrupts.
- */
-static void
-#ifndef	NETGRAPH
-arwatchdog(struct ifnet *ifp)
-{
-	struct ar_softc *sc = ifp->if_softc;
-#else	/* NETGRAPH */
-arwatchdog(struct ar_softc *sc)
-{
-#endif	/* NETGRAPH */
-	msci_channel *msci = &sc->sca->msci[sc->scachan];
-
-#ifndef	NETGRAPH
-	if(!(ifp->if_flags & IFF_RUNNING))
-		return;
-#endif	/* NETGRAPH */
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(sc->hc->iobase, sc->scano);
-
-	/* XXX if(sc->ifsppp.pp_if.if_flags & IFF_DEBUG) */
-		printf("ar%d: transmit failed, "
-			"ST0 %x, ST1 %x, ST3 %x, DSR %x.\n",
-			sc->unit,
-			msci->st0,
-			msci->st1,
-			msci->st3,
-			sc->sca->dmac[DMAC_TXCH(sc->scachan)].dsr);
-
-	if(msci->st1 & SCA_ST1_UDRN) {
-		msci->cmd = SCA_CMD_TXABORT;
-		msci->cmd = SCA_CMD_TXENABLE;
-		msci->st1 = SCA_ST1_UDRN;
-	}
-
-	sc->xmit_busy = 0;
-#ifndef	NETGRAPH
-	ifp->if_flags &= ~IFF_OACTIVE;
-#else	/* NETGRAPH */
-	/* XXX ifp->if_flags &= ~IFF_OACTIVE; */
-#endif	/* NETGRAPH */
-
-	if(sc->txb_inuse && --sc->txb_inuse)
-		ar_xmit(sc);
-
-#ifndef	NETGRAPH
-	arstart(ifp);
-#else	/* NETGRAPH */
-	arstart(sc);
-#endif	/* NETGRAPH */
-}
-
-static void
-ar_up(struct ar_softc *sc)
-{
-	sca_regs *sca;
-	msci_channel *msci;
-
-	sca = sc->sca;
-	msci = &sca->msci[sc->scachan];
-
-	TRC(printf("ar%d: sca %p, msci %p, ch %d\n",
-		sc->unit, sca, msci, sc->scachan));
-
-	/*
-	 * Enable transmitter and receiver.
-	 * Raise DTR and RTS.
-	 * Enable interrupts.
-	 */
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(sc->hc->iobase, sc->scano);
-
-	/* XXX
-	 * What about using AUTO mode in msci->md0 ???
-	 * And what about CTS/DCD etc... ?
-	 */
-	if(sc->hc->handshake & AR_SHSK_RTS)
-		msci->ctl &= ~SCA_CTL_RTS;
-	if(sc->hc->handshake & AR_SHSK_DTR) {
-		sc->hc->txc_dtr[sc->scano] &= sc->scachan ? 
-			~AR_TXC_DTR_DTR1 : ~AR_TXC_DTR_DTR0;
-		if(sc->hc->bustype == AR_BUS_PCI)
-			sc->hc->orbase[sc->hc->txc_dtr_off[sc->scano]] =
-				sc->hc->txc_dtr[sc->scano];
-		else
-			outb(sc->hc->iobase + sc->hc->txc_dtr_off[sc->scano],
-				sc->hc->txc_dtr[sc->scano]);
-	}
-
-	if(sc->scachan == 0) {
-		sca->ier0 |= 0x0F;
-		sca->ier1 |= 0x0F;
-	} else {
-		sca->ier0 |= 0xF0;
-		sca->ier1 |= 0xF0;
-	}
-
-	msci->cmd = SCA_CMD_RXENABLE;
-	if(sc->hc->bustype == AR_BUS_ISA)
-		inb(sc->hc->iobase + AR_ID_5); /* XXX slow it down a bit. */
-	msci->cmd = SCA_CMD_TXENABLE;
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_OFF(sc->hc->iobase);
-#ifdef	NETGRAPH
-	untimeout(ngar_watchdog_frame, sc, sc->handle);
-	sc->handle = timeout(ngar_watchdog_frame, sc, hz);
-	sc->running = 1;
-#endif	/* NETGRAPH */
-}
-
-static void
-ar_down(struct ar_softc *sc)
-{
-	sca_regs *sca;
-	msci_channel *msci;
-
-	sca = sc->sca;
-	msci = &sca->msci[sc->scachan];
-
-#ifdef	NETGRAPH
-	untimeout(ngar_watchdog_frame, sc, sc->handle);
-	sc->running = 0;
-#endif	/* NETGRAPH */
-	/*
-	 * Disable transmitter and receiver.
-	 * Lower DTR and RTS.
-	 * Disable interrupts.
-	 */
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(sc->hc->iobase, sc->scano);
-	msci->cmd = SCA_CMD_RXDISABLE;
-	if(sc->hc->bustype == AR_BUS_ISA)
-		inb(sc->hc->iobase + AR_ID_5); /* XXX slow it down a bit. */
-	msci->cmd = SCA_CMD_TXDISABLE;
-
-	if(sc->hc->handshake & AR_SHSK_RTS)
-		msci->ctl |= SCA_CTL_RTS;
-	if(sc->hc->handshake & AR_SHSK_DTR) {
-		sc->hc->txc_dtr[sc->scano] |= sc->scachan ? 
-			AR_TXC_DTR_DTR1 : AR_TXC_DTR_DTR0;
-		if(sc->hc->bustype == AR_BUS_PCI)
-			sc->hc->orbase[sc->hc->txc_dtr_off[sc->scano]] =
-				sc->hc->txc_dtr[sc->scano];
-		else
-			outb(sc->hc->iobase + sc->hc->txc_dtr_off[sc->scano],
-				sc->hc->txc_dtr[sc->scano]);
-	}
-
-	if(sc->scachan == 0) {
-		sca->ier0 &= ~0x0F;
-		sca->ier1 &= ~0x0F;
-	} else {
-		sca->ier0 &= ~0xF0;
-		sca->ier1 &= ~0xF0;
-	}
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_OFF(sc->hc->iobase);
-}
-
-static int
-ar_read_pim_iface(volatile struct ar_hardc *hc, int channel)
-{
-	int ctype, i, val, x;
-	volatile u_char *pimctrl;
-
-	ctype = 0;
-	val = 0;
-
-	pimctrl = hc->orbase + AR_PIMCTRL;
-
-	/* Reset the PIM */
-	*pimctrl = 0x00;
-	*pimctrl = AR_PIM_STROBE;
-
-	/* Check if there is a PIM */
-	*pimctrl = 0x00;
-	*pimctrl = AR_PIM_READ;
-	x = *pimctrl;
-	TRC(printf("x = %x", x));
-	if(x & AR_PIM_DATA) {
-		printf("No PIM installed\n");
-		return (AR_IFACE_UNKNOWN);
-	}
-
-	x = (x >> 1) & 0x01;
-	val |= x << 0;
-
-	/* Now read the next 15 bits */
-	for(i = 1; i < 16; i++) {
-		*pimctrl = AR_PIM_READ;
-		*pimctrl = AR_PIM_READ | AR_PIM_STROBE;
-		x = *pimctrl;
-		TRC(printf(" %x ", x));
-		x = (x >> 1) & 0x01;
-		val |= x << i;
-		if(i == 8 && (val & 0x000f) == 0x0004) {
-			int ii;
-			
-			/* Start bit */
-			*pimctrl = AR_PIM_A2D_DOUT | AR_PIM_A2D_STROBE;
-			*pimctrl = AR_PIM_A2D_DOUT;
-
-			/* Mode bit */
-			*pimctrl = AR_PIM_A2D_DOUT | AR_PIM_A2D_STROBE;
-			*pimctrl = AR_PIM_A2D_DOUT;
-
-			/* Sign bit */
-			*pimctrl = AR_PIM_A2D_DOUT | AR_PIM_A2D_STROBE;
-			*pimctrl = AR_PIM_A2D_DOUT;
-
-			/* Select channel */
-			*pimctrl = AR_PIM_A2D_STROBE | ((channel & 2) << 2);
-			*pimctrl = ((channel & 2) << 2);
-			*pimctrl = AR_PIM_A2D_STROBE | ((channel & 1) << 3);
-			*pimctrl = ((channel & 1) << 3);
-
-			*pimctrl = AR_PIM_A2D_STROBE;
-
-			x = *pimctrl;
-			if(x & AR_PIM_DATA)
-				printf("\nOops A2D start bit not zero (%X)\n", x);
-
-			for(ii = 7; ii >= 0; ii--) {
-				*pimctrl = 0x00;
-				*pimctrl = AR_PIM_A2D_STROBE;
-				x = *pimctrl;
-				if(x & AR_PIM_DATA)
-					ctype |= 1 << ii;
-			}
-		}
-	}
-	TRC(printf("\nPIM val %x, ctype %x, %d\n", val, ctype, ctype));
-	*pimctrl = AR_PIM_MODEG;
-	*pimctrl = AR_PIM_MODEG | AR_PIM_AUTO_LED;
-	if(ctype > 255)
-		return (AR_IFACE_UNKNOWN);
-	if(ctype > 239)
-		return (AR_IFACE_V_35);
-	if(ctype > 207)
-		return (AR_IFACE_EIA_232);
-	if(ctype > 178)
-		return (AR_IFACE_X_21);
-	if(ctype > 150)
-		return (AR_IFACE_EIA_530);
-	if(ctype > 25)
-		return (AR_IFACE_UNKNOWN);
-	if(ctype > 7)
-		return (AR_IFACE_LOOPBACK);
-	return (AR_IFACE_UNKNOWN);
-}
-
-/*
- * Initialize the card, allocate memory for the ar_softc structures
- * and fill in the pointers.
- */
-static void
-arc_init(struct ar_hardc *hc)
-{
-	struct ar_softc *sc;
-	int x;
-	u_int chanmem;
-	u_int bufmem;
-	u_int next;
-	u_int descneeded;
-	u_char isr, mar;
-
-	MALLOC(sc, struct ar_softc *, hc->numports * sizeof(struct ar_softc),
-		M_DEVBUF, M_WAITOK | M_ZERO);
-	if (sc == NULL)
-		return;
-	hc->sc = sc;
-
-	hc->txc_dtr[0] = AR_TXC_DTR_NOTRESET |
-			 AR_TXC_DTR_DTR0 | AR_TXC_DTR_DTR1;
-	hc->txc_dtr[1] = AR_TXC_DTR_DTR0 | AR_TXC_DTR_DTR1;
-	hc->txc_dtr_off[0] = AR_TXC_DTR0;
-	hc->txc_dtr_off[1] = AR_TXC_DTR2;
-	if(hc->bustype == AR_BUS_PCI) {
-		hc->txc_dtr_off[0] *= 4;
-		hc->txc_dtr_off[1] *= 4;
-	}
-
-	/*
-	 * reset the card and wait at least 1uS.
-	 */
-	if(hc->bustype == AR_BUS_PCI)
-		hc->orbase[AR_TXC_DTR0 * 4] = ~AR_TXC_DTR_NOTRESET &
-			hc->txc_dtr[0];
-	else
-		outb(hc->iobase + AR_TXC_DTR0, ~AR_TXC_DTR_NOTRESET &
-			hc->txc_dtr[0]);
-	DELAY(2);
-	if(hc->bustype == AR_BUS_PCI)
-		hc->orbase[AR_TXC_DTR0 * 4] = hc->txc_dtr[0];
-	else
-		outb(hc->iobase + AR_TXC_DTR0, hc->txc_dtr[0]);
-
-	if(hc->bustype == AR_BUS_ISA) {
-		/*
-		 * Configure the card.
-		 * Mem address, irq, 
-		 */
-		mar = kvtop(hc->mem_start) >> 16;
-		isr = irqtable[hc->isa_irq] << 1;
-		if(isr == 0)
-			printf("ar%d: Warning illegal interrupt %d\n",
-				hc->cunit, hc->isa_irq);
-		isr = isr | ((kvtop(hc->mem_start) & 0xc000) >> 10);
-
-		hc->sca[0] = (sca_regs *)hc->mem_start;
-		hc->sca[1] = (sca_regs *)hc->mem_start;
-
-		outb(hc->iobase + AR_MEM_SEL, mar);
-		outb(hc->iobase + AR_INT_SEL, isr | AR_INTS_CEN);
-	}
-
-	if(hc->bustype == AR_BUS_PCI && hc->interface[0] == AR_IFACE_PIM)
-		for(x = 0; x < hc->numports; x++)
-			hc->interface[x] = ar_read_pim_iface(hc, x);
-
-	/*
-	 * Set the TX clock direction and enable TX.
-	 */
-	for(x=0;x<hc->numports;x++) {
-		switch(hc->interface[x]) {
-		case AR_IFACE_V_35:
-			hc->txc_dtr[x / NCHAN] |= (x % NCHAN == 0) ?
-			    AR_TXC_DTR_TX0 : AR_TXC_DTR_TX1;
-			hc->txc_dtr[x / NCHAN] |= (x % NCHAN == 0) ?
-			    AR_TXC_DTR_TXCS0 : AR_TXC_DTR_TXCS1;
-			break;
-		case AR_IFACE_EIA_530:
-		case AR_IFACE_COMBO:
-		case AR_IFACE_X_21:
-			hc->txc_dtr[x / NCHAN] |= (x % NCHAN == 0) ?
-			    AR_TXC_DTR_TX0 : AR_TXC_DTR_TX1;
-			break;
-		}
-	}
-
-	if(hc->bustype == AR_BUS_PCI)
-		hc->orbase[AR_TXC_DTR0 * 4] = hc->txc_dtr[0];
-	else
-		outb(hc->iobase + AR_TXC_DTR0, hc->txc_dtr[0]);
-	if(hc->numports > NCHAN) {
-		if(hc->bustype == AR_BUS_PCI)
-			hc->orbase[AR_TXC_DTR2 * 4] = hc->txc_dtr[1];
-		else
-			outb(hc->iobase + AR_TXC_DTR2, hc->txc_dtr[1]);
-	}
-
-	chanmem = hc->memsize / hc->numports;
-	next = 0;
-
-	for(x=0;x<hc->numports;x++, sc++) {
-		int blk;
-
-		sc->sca = hc->sca[x / NCHAN];
-
-		for(blk = 0; blk < AR_TX_BLOCKS; blk++) {
-			sc->block[blk].txdesc = next;
-			bufmem = (16 * 1024) / AR_TX_BLOCKS;
-			descneeded = bufmem / AR_BUF_SIZ;
-			sc->block[blk].txstart = sc->block[blk].txdesc +
-				((((descneeded * sizeof(sca_descriptor)) /
-					AR_BUF_SIZ) + 1) * AR_BUF_SIZ);
-			sc->block[blk].txend = next + bufmem;
-			sc->block[blk].txmax =
-				(sc->block[blk].txend - sc->block[blk].txstart)
-				/ AR_BUF_SIZ;
-			next += bufmem;
-
-			TRC(printf("ar%d: blk %d: txdesc %x, txstart %x, "
-				   "txend %x, txmax %d\n",
-				   x,
-				   blk,
-				   sc->block[blk].txdesc,
-				   sc->block[blk].txstart,
-				   sc->block[blk].txend,
-				   sc->block[blk].txmax));
-		}
-
-		sc->rxdesc = next;
-		bufmem = chanmem - (bufmem * AR_TX_BLOCKS);
-		descneeded = bufmem / AR_BUF_SIZ;
-		sc->rxstart = sc->rxdesc +
-				((((descneeded * sizeof(sca_descriptor)) /
-					AR_BUF_SIZ) + 1) * AR_BUF_SIZ);
-		sc->rxend = next + bufmem;
-		sc->rxmax = (sc->rxend - sc->rxstart) / AR_BUF_SIZ;
-		next += bufmem;
-		TRC(printf("ar%d: rxdesc %x, rxstart %x, "
-			   "rxend %x, rxmax %d\n",
-			   x, sc->rxdesc, sc->rxstart, sc->rxend, sc->rxmax));
-	}
-
-	if(hc->bustype == AR_BUS_PCI)
-		hc->orbase[AR_PIMCTRL] = AR_PIM_MODEG | AR_PIM_AUTO_LED;
-}
-
-
-/*
- * The things done here are channel independent.
- *
- *   Configure the sca waitstates.
- *   Configure the global interrupt registers.
- *   Enable master dma enable.
- */
-static void
-ar_init_sca(struct ar_hardc *hc, int scano)
-{
-	sca_regs *sca;
-
-	sca = hc->sca[scano];
-	if(hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(hc->iobase, scano);
-
-	/*
-	 * Do the wait registers.
-	 * Set everything to 0 wait states.
-	 */
-	sca->pabr0 = 0;
-	sca->pabr1 = 0;
-	sca->wcrl  = 0;
-	sca->wcrm  = 0;
-	sca->wcrh  = 0;
-
-	/*
-	 * Configure the interrupt registers.
-	 * Most are cleared until the interface is configured.
-	 */
-	sca->ier0 = 0x00; /* MSCI interrupts... Not used with dma. */
-	sca->ier1 = 0x00; /* DMAC interrupts */
-	sca->ier2 = 0x00; /* TIMER interrupts... Not used yet. */
-	sca->itcr = 0x00; /* Use ivr and no intr ack */
-	sca->ivr  = 0x40; /* Fill in the interrupt vector. */
-	sca->imvr = 0x40;
-
-	/*
-	 * Configure the timers.
-	 * XXX Later
-	 */
-
-
-	/*
-	 * Set the DMA channel priority to rotate between
-	 * all four channels.
-	 *
-	 * Enable all dma channels.
-	 */
-	if(hc->bustype == AR_BUS_PCI) {
-		u_char *t;
-
-		/*
-		 * Stupid problem with the PCI interface chip that break
-		 * things.
-		 * XXX
-		 */
-		t = (u_char *)sca;
-		t[AR_PCI_SCA_PCR] = SCA_PCR_PR2;
-		t[AR_PCI_SCA_DMER] = SCA_DMER_EN;
-	} else {
-		sca->pcr = SCA_PCR_PR2;
-		sca->dmer = SCA_DMER_EN;
-	}
-}
-
-
-/*
- * Configure the msci
- *
- * NOTE: The serial port configuration is hardcoded at the moment.
- */
-static void
-ar_init_msci(struct ar_softc *sc)
-{
-	msci_channel *msci;
-
-	msci = &sc->sca->msci[sc->scachan];
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(sc->hc->iobase, sc->scano);
-
-	msci->cmd = SCA_CMD_RESET;
-
-	msci->md0 = SCA_MD0_CRC_1 |
-		    SCA_MD0_CRC_CCITT |
-		    SCA_MD0_CRC_ENABLE |
-		    SCA_MD0_MODE_HDLC;
-	msci->md1 = SCA_MD1_NOADDRCHK;
-	msci->md2 = SCA_MD2_DUPLEX | SCA_MD2_NRZ;
-
-	/*
-	 * Acording to the manual I should give a reset after changing the
-	 * mode registers.
-	 */
-	msci->cmd = SCA_CMD_RXRESET;
-	msci->ctl = SCA_CTL_IDLPAT | SCA_CTL_UDRNC | SCA_CTL_RTS;
-
-	/*
-	 * For now all interfaces are programmed to use the RX clock for
-	 * the TX clock.
-	 */
-	switch(sc->hc->interface[sc->subunit]) {
-	case AR_IFACE_V_35:
-		msci->rxs = SCA_RXS_CLK_RXC0 | SCA_RXS_DIV1;
-		msci->txs = SCA_TXS_CLK_TXC | SCA_TXS_DIV1;
-		break;
-	case AR_IFACE_X_21:
-	case AR_IFACE_EIA_530:
-	case AR_IFACE_COMBO:
-		msci->rxs = SCA_RXS_CLK_RXC0 | SCA_RXS_DIV1;
-		msci->txs = SCA_TXS_CLK_RX | SCA_TXS_DIV1;
-	}
-
-	msci->tmc = 153;   /* This give 64k for loopback */
-
-	/* XXX
-	 * Disable all interrupts for now. I think if you are using
-	 * the dmac you don't use these interrupts.
-	 */
-	msci->ie0 = 0;
-	msci->ie1 = 0x0C; /* XXX CTS and DCD (DSR on 570I) level change. */
-	msci->ie2 = 0;
-	msci->fie = 0;
-
-	msci->sa0 = 0;
-	msci->sa1 = 0;
-
-	msci->idl = 0x7E; /* XXX This is what cisco does. */
-
-	/*
-	 * This is what the ARNET diags use.
-	 */
-	msci->rrc  = 0x0E;
-	msci->trc0 = 0x12;
-	msci->trc1 = 0x1F;
-}
-
-/*
- * Configure the rx dma controller.
- */
-static void
-ar_init_rx_dmac(struct ar_softc *sc)
-{
-	dmac_channel *dmac;
-	sca_descriptor *rxd;
-	u_int rxbuf;
-	u_int rxda;
-	u_int rxda_d;
-	int x = 0;
-
-	dmac = &sc->sca->dmac[DMAC_RXCH(sc->scachan)];
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_MEM(sc->hc->iobase, sc->rxdesc);
-
-	rxd = (sca_descriptor *)(sc->hc->mem_start + (sc->rxdesc&sc->hc->winmsk));
-	rxda_d = (u_int)sc->hc->mem_start - (sc->rxdesc & ~sc->hc->winmsk);
-
-	for(rxbuf=sc->rxstart;rxbuf<sc->rxend;rxbuf += AR_BUF_SIZ, rxd++) {
-		rxda = (u_int)&rxd[1] - rxda_d;
-		rxd->cp = (u_short)(rxda & 0xfffful);
-
-		x++;
-		if(x < 6)
-		TRC(printf("Descrp %p, data pt %x, data %x, ",
-			rxd, rxda, rxbuf));
-
-		rxd->bp = (u_short)(rxbuf & 0xfffful);
-		rxd->bpb = (u_char)((rxbuf >> 16) & 0xff);
-		rxd->len = 0;
-		rxd->stat = 0xff; /* The sca write here when it is finished. */
-
-		if(x < 6)
-		TRC(printf("bpb %x, bp %x.\n", rxd->bpb, rxd->bp));
-	}
-	rxd--;
-	rxd->cp = (u_short)(sc->rxdesc & 0xfffful);
-
-	sc->rxhind = 0;
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(sc->hc->iobase, sc->scano);
-
-	dmac->dsr = 0;    /* Disable DMA transfer */
-	dmac->dcr = SCA_DCR_ABRT;
-
-	/* XXX maybe also SCA_DMR_CNTE */
-	dmac->dmr = SCA_DMR_TMOD | SCA_DMR_NF;
-	dmac->bfl = AR_BUF_SIZ;
-
-	dmac->cda = (u_short)(sc->rxdesc & 0xffff);
-	dmac->sarb = (u_char)((sc->rxdesc >> 16) & 0xff);
-
-	rxd = (sca_descriptor *)sc->rxstart;
-	dmac->eda = (u_short)((u_int)&rxd[sc->rxmax - 1] & 0xffff);
-
-	dmac->dir = 0xF0;
-
-	dmac->dsr = SCA_DSR_DE;
-}
-
-/*
- * Configure the TX DMA descriptors.
- * Initialize the needed values and chain the descriptors.
- */
-static void
-ar_init_tx_dmac(struct ar_softc *sc)
-{
-	dmac_channel *dmac;
-	struct buf_block *blkp;
-	int blk;
-	sca_descriptor *txd;
-	u_int txbuf;
-	u_int txda;
-	u_int txda_d;
-
-	dmac = &sc->sca->dmac[DMAC_TXCH(sc->scachan)];
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_MEM(sc->hc->iobase, sc->block[0].txdesc);
-
-	for(blk = 0; blk < AR_TX_BLOCKS; blk++) {
-		blkp = &sc->block[blk];
-		txd = (sca_descriptor *)(sc->hc->mem_start +
-					(blkp->txdesc&sc->hc->winmsk));
-		txda_d = (u_int)sc->hc->mem_start -
-				(blkp->txdesc & ~sc->hc->winmsk);
-
-		txbuf=blkp->txstart;
-		for(;txbuf<blkp->txend;txbuf += AR_BUF_SIZ, txd++) {
-			txda = (u_int)&txd[1] - txda_d;
-			txd->cp = (u_short)(txda & 0xfffful);
-
-			txd->bp = (u_short)(txbuf & 0xfffful);
-			txd->bpb = (u_char)((txbuf >> 16) & 0xff);
-			TRC(printf("ar%d: txbuf %x, bpb %x, bp %x\n",
-				sc->unit, txbuf, txd->bpb, txd->bp));
-			txd->len = 0;
-			txd->stat = 0;
-		}
-		txd--;
-		txd->cp = (u_short)(blkp->txdesc & 0xfffful);
-
-		blkp->txtail = (u_int)txd - (u_int)sc->hc->mem_start;
-		TRC(printf("TX Descriptors start %x, end %x.\n",
-			blkp->txdesc,
-			blkp->txtail));
-	}
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(sc->hc->iobase, sc->scano);
-
-	dmac->dsr = 0; /* Disable DMA */
-	dmac->dcr = SCA_DCR_ABRT;
-	dmac->dmr = SCA_DMR_TMOD | SCA_DMR_NF;
-	dmac->dir = SCA_DIR_EOT | SCA_DIR_BOF | SCA_DIR_COF;
-
-	dmac->sarb = (u_char)((sc->block[0].txdesc >> 16) & 0xff);
-}
-
-
-/*
- * Look through the descriptors to see if there is a complete packet
- * available. Stop if we get to where the sca is busy.
- *
- * Return the length and status of the packet.
- * Return nonzero if there is a packet available.
- *
- * NOTE:
- * It seems that we get the interrupt a bit early. The updateing of
- * descriptor values is not always completed when this is called.
- */
-static int
-ar_packet_avail(struct ar_softc *sc,
-		    int *len,
-		    u_char *rxstat)
-{
-	dmac_channel *dmac;
-	sca_descriptor *rxdesc;
-	sca_descriptor *endp;
-	sca_descriptor *cda;
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(sc->hc->iobase, sc->scano);
-	dmac = &sc->sca->dmac[DMAC_RXCH(sc->scachan)];
-	cda = (sca_descriptor *)(sc->hc->mem_start +
-	      ((((u_int)dmac->sarb << 16) + dmac->cda) & sc->hc->winmsk));
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_MEM(sc->hc->iobase, sc->rxdesc);
-	rxdesc = (sca_descriptor *)
-			(sc->hc->mem_start + (sc->rxdesc & sc->hc->winmsk));
-	endp = rxdesc;
-	rxdesc = &rxdesc[sc->rxhind];
-	endp = &endp[sc->rxmax];
-
-	*len = 0;
-
-	while(rxdesc != cda) {
-		*len += rxdesc->len;
-
-		if(rxdesc->stat & SCA_DESC_EOM) {
-			*rxstat = rxdesc->stat;
-			TRC(printf("ar%d: PKT AVAIL len %d, %x.\n",
-				sc->unit, *len, *rxstat));
-			return (1);
-		}
-
-		rxdesc++;
-		if(rxdesc == endp)
-			rxdesc = (sca_descriptor *)
-			       (sc->hc->mem_start + (sc->rxdesc & sc->hc->winmsk));
-	}
-
-	*len = 0;
-	*rxstat = 0;
-	return (0);
-}
-
-
-/*
- * Copy a packet from the on card memory into a provided mbuf.
- * Take into account that buffers wrap and that a packet may
- * be larger than a buffer.
- */
-static void 
-ar_copy_rxbuf(struct mbuf *m,
-		   struct ar_softc *sc,
-		   int len)
-{
-	sca_descriptor *rxdesc;
-	u_int rxdata;
-	u_int rxmax;
-	u_int off = 0;
-	u_int tlen;
-
-	rxdata = sc->rxstart + (sc->rxhind * AR_BUF_SIZ);
-	rxmax = sc->rxstart + (sc->rxmax * AR_BUF_SIZ);
-
-	rxdesc = (sca_descriptor *)
-			(sc->hc->mem_start + (sc->rxdesc & sc->hc->winmsk));
-	rxdesc = &rxdesc[sc->rxhind];
-
-	while(len) {
-		tlen = (len < AR_BUF_SIZ) ? len : AR_BUF_SIZ;
-		if(sc->hc->bustype == AR_BUS_ISA)
-			ARC_SET_MEM(sc->hc->iobase, rxdata);
-		bcopy(sc->hc->mem_start + (rxdata & sc->hc->winmsk), 
-			mtod(m, caddr_t) + off,
-			tlen);
-
-		off += tlen;
-		len -= tlen;
-
-		if(sc->hc->bustype == AR_BUS_ISA)
-			ARC_SET_MEM(sc->hc->iobase, sc->rxdesc);
-		rxdesc->len = 0;
-		rxdesc->stat = 0xff;
-
-		rxdata += AR_BUF_SIZ;
-		rxdesc++;
-		if(rxdata == rxmax) {
-			rxdata = sc->rxstart;
-			rxdesc = (sca_descriptor *)
-				(sc->hc->mem_start + (sc->rxdesc & sc->hc->winmsk));
-		}
-	}
-}
-
-/*
- * If single is set, just eat a packet. Otherwise eat everything up to
- * where cda points. Update pointers to point to the next packet.
- */
-static void
-ar_eat_packet(struct ar_softc *sc, int single)
-{
-	dmac_channel *dmac;
-	sca_descriptor *rxdesc;
-	sca_descriptor *endp;
-	sca_descriptor *cda;
-	int loopcnt = 0;
-	u_char stat;
-
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(sc->hc->iobase, sc->scano);
-	dmac = &sc->sca->dmac[DMAC_RXCH(sc->scachan)];
-	cda = (sca_descriptor *)(sc->hc->mem_start +
-	      ((((u_int)dmac->sarb << 16) + dmac->cda) & sc->hc->winmsk));
-
-	/*
-	 * Loop until desc->stat == (0xff || EOM)
-	 * Clear the status and length in the descriptor.
-	 * Increment the descriptor.
-	 */
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_MEM(sc->hc->iobase, sc->rxdesc);
-	rxdesc = (sca_descriptor *)
-		(sc->hc->mem_start + (sc->rxdesc & sc->hc->winmsk));
-	endp = rxdesc;
-	rxdesc = &rxdesc[sc->rxhind];
-	endp = &endp[sc->rxmax];
-
-	while(rxdesc != cda) {
-		loopcnt++;
-		if(loopcnt > sc->rxmax) {
-			printf("ar%d: eat pkt %d loop, cda %p, "
-			       "rxdesc %p, stat %x.\n",
-			       sc->unit,
-			       loopcnt,
-			       (void *)cda,
-			       (void *)rxdesc,
-			       rxdesc->stat);
-			break;
-		}
-
-		stat = rxdesc->stat;
-
-		rxdesc->len = 0;
-		rxdesc->stat = 0xff;
-
-		rxdesc++;
-		sc->rxhind++;
-		if(rxdesc == endp) {
-			rxdesc = (sca_descriptor *)
-			       (sc->hc->mem_start + (sc->rxdesc & sc->hc->winmsk));
-			sc->rxhind = 0;
-		}
-
-		if(single && (stat == SCA_DESC_EOM))
-			break;
-	}
-
-	/*
-	 * Update the eda to the previous descriptor.
-	 */
-	if(sc->hc->bustype == AR_BUS_ISA)
-		ARC_SET_SCA(sc->hc->iobase, sc->scano);
-
-	rxdesc = (sca_descriptor *)sc->rxdesc;
-	rxdesc = &rxdesc[(sc->rxhind + sc->rxmax - 2 ) % sc->rxmax];
-
-	sc->sca->dmac[DMAC_RXCH(sc->scachan)].eda = 
-			(u_short)((u_int)rxdesc & 0xffff);
-}
-
-
-/*
- * While there is packets available in the rx buffer, read them out
- * into mbufs and ship them off.
- */
-static void
-ar_get_packets(struct ar_softc *sc)
-{
-	sca_descriptor *rxdesc;
-	struct mbuf *m = NULL;
-	int i;
-	int len;
-	u_char rxstat;
-#ifdef NETGRAPH
-	int error;
-#endif
-
-	while(ar_packet_avail(sc, &len, &rxstat)) {
-		TRC(printf("apa: len %d, rxstat %x\n", len, rxstat));
-		if(((rxstat & SCA_DESC_ERRORS) == 0) && (len < MCLBYTES)) {
-			MGETHDR(m, M_DONTWAIT, MT_DATA);
-			if(m == NULL) {
-				/* eat packet if get mbuf fail!! */
-				ar_eat_packet(sc, 1);
-				continue;
-			}
-#ifndef NETGRAPH
-			m->m_pkthdr.rcvif = &sc->ifsppp.pp_if;
-#else	/* NETGRAPH */
-			m->m_pkthdr.rcvif = NULL;
-			sc->inbytes += len;
-			sc->inlast = 0;
-#endif	/* NETGRAPH */
-			m->m_pkthdr.len = m->m_len = len;
-			if(len > MHLEN) {
-				MCLGET(m, M_DONTWAIT);
-				if((m->m_flags & M_EXT) == 0) {
-					m_freem(m);
-					ar_eat_packet(sc, 1);
-					continue;
-				}
-			}
-			ar_copy_rxbuf(m, sc, len);
-#ifndef NETGRAPH
-			if(sc->ifsppp.pp_if.if_bpf)
-				bpf_mtap(&sc->ifsppp.pp_if, m);
-			sppp_input(&sc->ifsppp.pp_if, m);
-			sc->ifsppp.pp_if.if_ipackets++;
-#else	/* NETGRAPH */
-			NG_SEND_DATA_ONLY(error, sc->hook, m);
-			sc->ipackets++;
-#endif	/* NETGRAPH */
-
-			/*
-			 * Update the eda to the previous descriptor.
-			 */
-			i = (len + AR_BUF_SIZ - 1) / AR_BUF_SIZ;
-			sc->rxhind = (sc->rxhind + i) % sc->rxmax;
-
-			if(sc->hc->bustype == AR_BUS_ISA)
-				ARC_SET_SCA(sc->hc->iobase, sc->scano);
-
-			rxdesc = (sca_descriptor *)sc->rxdesc;
-			rxdesc =
-			     &rxdesc[(sc->rxhind + sc->rxmax - 2 ) % sc->rxmax];
-
-			sc->sca->dmac[DMAC_RXCH(sc->scachan)].eda = 
-				(u_short)((u_int)rxdesc & 0xffff);
-		} else {
-			int tries = 5;
-
-			while((rxstat == 0xff) && --tries)
-				ar_packet_avail(sc, &len, &rxstat);
-
-			/*
-			 * It look like we get an interrupt early
-			 * sometimes and then the status is not
-			 * filled in yet.
-			 */
-			if(tries && (tries != 5))
-				continue;
-
-			ar_eat_packet(sc, 1);
-
-#ifndef	NETGRAPH
-			sc->ifsppp.pp_if.if_ierrors++;
-#else	/* NETGRAPH */
-			sc->ierrors[0]++;
-#endif	/* NETGRAPH */
-
-			if(sc->hc->bustype == AR_BUS_ISA)
-				ARC_SET_SCA(sc->hc->iobase, sc->scano);
-
-			TRCL(printf("ar%d: Receive error chan %d, "
-					"stat %x, msci st3 %x,"
-					"rxhind %d, cda %x, eda %x.\n",
-					sc->unit,
-					sc->scachan, 
-					rxstat,
-					sc->sca->msci[sc->scachan].st3,
-					sc->rxhind,
-					sc->sca->dmac[
-						DMAC_RXCH(sc->scachan)].cda,
-					sc->sca->dmac[
-						DMAC_RXCH(sc->scachan)].eda));
-		}
-	}
-}
-
-
-/*
- * All DMA interrupts come here.
- *
- * Each channel has two interrupts.
- * Interrupt A for errors and Interrupt B for normal stuff like end
- * of transmit or receive dmas.
- */
-static void
-ar_dmac_intr(struct ar_hardc *hc, int scano, u_char isr1)
-{
-	u_char dsr;
-	u_char dotxstart = isr1;
-	int mch;
-	struct ar_softc *sc;
-	sca_regs *sca;
-	dmac_channel *dmac;
-
-	sca = hc->sca[scano];
-	mch = 0;
-	/*
-	 * Shortcut if there is no interrupts for dma channel 0 or 1
-	 */
-	if((isr1 & 0x0F) == 0) {
-		mch = 1;
-		isr1 >>= 4;
-	}
-
-	do {
-		sc = &hc->sc[mch + (NCHAN * scano)];
-
-		/*
-		 * Transmit channel
-		 */
-		if(isr1 & 0x0C) {
-			dmac = &sca->dmac[DMAC_TXCH(mch)];
-
-			if(hc->bustype == AR_BUS_ISA)
-				ARC_SET_SCA(hc->iobase, scano);
-
-			dsr = dmac->dsr;
-			dmac->dsr = dsr;
-
-			/* Counter overflow */
-			if(dsr & SCA_DSR_COF) {
-				printf("ar%d: TX DMA Counter overflow, "
-					"txpacket no %lu.\n",
-					sc->unit,
-#ifndef	NETGRAPH
-					sc->ifsppp.pp_if.if_opackets);
-				sc->ifsppp.pp_if.if_oerrors++;
-#else	/* NETGRAPH */
-					sc->opackets);
-				sc->oerrors++;
-#endif	/* NETGRAPH */
-			}
-
-			/* Buffer overflow */
-			if(dsr & SCA_DSR_BOF) {
-				printf("ar%d: TX DMA Buffer overflow, "
-					"txpacket no %lu, dsr %02x, "
-					"cda %04x, eda %04x.\n",
-					sc->unit,
-#ifndef	NETGRAPH
-					sc->ifsppp.pp_if.if_opackets,
-#else	/* NETGRAPH */
-					sc->opackets,
-#endif	/* NETGRAPH */
-					dsr,
-					dmac->cda,
-					dmac->eda);
-#ifndef	NETGRAPH
-				sc->ifsppp.pp_if.if_oerrors++;
-#else	/* NETGRAPH */
-				sc->oerrors++;
-#endif	/* NETGRAPH */
-			}
-
-			/* End of Transfer */
-			if(dsr & SCA_DSR_EOT) {
-				/*
-				 * This should be the most common case.
-				 *
-				 * Clear the IFF_OACTIVE flag.
-				 *
-				 * Call arstart to start a new transmit if
-				 * there is data to transmit.
-				 */
-				sc->xmit_busy = 0;
-#ifndef	NETGRAPH
-				sc->ifsppp.pp_if.if_flags &= ~IFF_OACTIVE;
-				sc->ifsppp.pp_if.if_timer = 0;
-#else	/* NETGRAPH */
-			/* XXX 	c->ifsppp.pp_if.if_flags &= ~IFF_OACTIVE; */
-				sc->out_dog = 0; /* XXX */
-#endif	/* NETGRAPH */
-
-				if(sc->txb_inuse && --sc->txb_inuse)
-					ar_xmit(sc);
-			}
-		}
-
-		/*
-		 * Receive channel
-		 */
-		if(isr1 & 0x03) {
-			dmac = &sca->dmac[DMAC_RXCH(mch)];
-
-			if(hc->bustype == AR_BUS_ISA)
-				ARC_SET_SCA(hc->iobase, scano);
-
-			dsr = dmac->dsr;
-			dmac->dsr = dsr;
-
-			TRC(printf("AR: RX DSR %x\n", dsr));
-
-			/* End of frame */
-			if(dsr & SCA_DSR_EOM) {
-				TRC(int tt = sc->ifsppp.pp_if.if_ipackets;)
-				TRC(int ind = sc->rxhind;)
-
-				ar_get_packets(sc);
-				TRC(
-#ifndef	NETGRAPH
-				if(tt == sc->ifsppp.pp_if.if_ipackets) {
-#else	/* NETGRAPH */
-				if(tt == sc->ipackets) {
-#endif	/* NETGRAPH */
-					sca_descriptor *rxdesc;
-					int i;
-
-					if(hc->bustype == AR_BUS_ISA)
-						ARC_SET_SCA(hc->iobase, scano);
-					printf("AR: RXINTR isr1 %x, dsr %x, "
-					       "no data %d pkts, orxhind %d.\n",
-					       dotxstart,
-					       dsr,
-					       tt,
-					       ind);
-					printf("AR: rxdesc %x, rxstart %x, "
-					       "rxend %x, rxhind %d, "
-					       "rxmax %d.\n",
-					       sc->rxdesc,
-					       sc->rxstart,
-					       sc->rxend,
-					       sc->rxhind,
-					       sc->rxmax);
-					printf("AR: cda %x, eda %x.\n",
-					       dmac->cda,
-					       dmac->eda);
-
-					if(sc->hc->bustype == AR_BUS_ISA)
-						ARC_SET_MEM(sc->hc->iobase,
-						    sc->rxdesc);
-					rxdesc = (sca_descriptor *)
-						 (sc->hc->mem_start +
-						  (sc->rxdesc & sc->hc->winmsk));
-					rxdesc = &rxdesc[sc->rxhind];
-					for(i=0;i<3;i++,rxdesc++)
-						printf("AR: rxdesc->stat %x, "
-							"len %d.\n",
-							rxdesc->stat,
-							rxdesc->len);
-				})
-			}
-
-			/* Counter overflow */
-			if(dsr & SCA_DSR_COF) {
-				printf("ar%d: RX DMA Counter overflow, "
-					"rxpkts %lu.\n",
-					sc->unit,
-#ifndef	NETGRAPH
-					sc->ifsppp.pp_if.if_ipackets);
-				sc->ifsppp.pp_if.if_ierrors++;
-#else	/* NETGRAPH */
-					sc->ipackets);
-				sc->ierrors[1]++;
-#endif	/* NETGRAPH */
-			}
-
-			/* Buffer overflow */
-			if(dsr & SCA_DSR_BOF) {
-				if(hc->bustype == AR_BUS_ISA)
-					ARC_SET_SCA(hc->iobase, scano);
-				printf("ar%d: RX DMA Buffer overflow, "
-					"rxpkts %lu, rxind %d, "
-					"cda %x, eda %x, dsr %x.\n",
-					sc->unit,
-#ifndef	NETGRAPH
-					sc->ifsppp.pp_if.if_ipackets,
-#else	/* NETGRAPH */
-					sc->ipackets,
-#endif	/* NETGRAPH */
-					sc->rxhind,
-					dmac->cda,
-					dmac->eda,
-					dsr);
-				/*
-				 * Make sure we eat as many as possible.
-				 * Then get the system running again.
-				 */
-				ar_eat_packet(sc, 0);
-#ifndef	NETGRAPH
-				sc->ifsppp.pp_if.if_ierrors++;
-#else	/* NETGRAPH */
-				sc->ierrors[2]++;
-#endif	/* NETGRAPH */
-				if(hc->bustype == AR_BUS_ISA)
-					ARC_SET_SCA(hc->iobase, scano);
-				sca->msci[mch].cmd = SCA_CMD_RXMSGREJ;
-				dmac->dsr = SCA_DSR_DE;
-
-				TRC(printf("ar%d: RX DMA Buffer overflow, "
-					"rxpkts %lu, rxind %d, "
-					"cda %x, eda %x, dsr %x. After\n",
-					sc->unit,
-					sc->ifsppp.pp_if.if_ipackets,
-					sc->rxhind,
-					dmac->cda,
-					dmac->eda,
-					dmac->dsr);)
-			}
-
-			/* End of Transfer */
-			if(dsr & SCA_DSR_EOT) {
-				/*
-				 * If this happen, it means that we are
-				 * receiving faster than what the processor
-				 * can handle.
-				 *
-				 * XXX We should enable the dma again.
-				 */
-				printf("ar%d: RX End of transfer, rxpkts %lu.\n",
-					sc->unit,
-#ifndef	NETGRAPH
-					sc->ifsppp.pp_if.if_ipackets);
-				sc->ifsppp.pp_if.if_ierrors++;
-#else	/* NETGRAPH */
-					sc->ipackets);
-				sc->ierrors[3]++;
-#endif	/* NETGRAPH */
-			}
-		}
-
-		isr1 >>= 4;
-
-		mch++;
-	}while((mch<NCHAN) && isr1);
-
-	/*
-	 * Now that we have done all the urgent things, see if we
-	 * can fill the transmit buffers.
-	 */
-	for(mch = 0; mch < NCHAN; mch++) {
-		if(dotxstart & 0x0C) {
-			sc = &hc->sc[mch + (NCHAN * scano)];
-#ifndef	NETGRAPH
-			arstart(&sc->ifsppp.pp_if);
-#else	/* NETGRAPH */
-			arstart(sc);
-#endif	/* NETGRAPH */
-		}
-		dotxstart >>= 4;
-	}
-}
-
-static void
-ar_msci_intr(struct ar_hardc *hc, int scano, u_char isr0)
-{
-	printf("arc%d: ARINTR: MSCI\n", hc->cunit);
-}
-
-static void
-ar_timer_intr(struct ar_hardc *hc, int scano, u_char isr2)
-{
-	printf("arc%d: ARINTR: TIMER\n", hc->cunit);
-}
-
-
-#ifdef	NETGRAPH
-/*****************************************
- * Device timeout/watchdog routine.
- * called once per second.
- * checks to see that if activity was expected, that it hapenned.
- * At present we only look to see if expected output was completed.
- */
-static void
-ngar_watchdog_frame(void * arg)
-{
-	struct ar_softc * sc = arg;
-	int s;
-	int	speed;
-
-	if(sc->running == 0)
-		return; /* if we are not running let timeouts die */
-	/*
-	 * calculate the apparent throughputs 
-	 *  XXX a real hack
-	 */
-	s = splimp();
-	speed = sc->inbytes - sc->lastinbytes;
-	sc->lastinbytes = sc->inbytes;
-	if ( sc->inrate < speed )
-		sc->inrate = speed;
-	speed = sc->outbytes - sc->lastoutbytes;
-	sc->lastoutbytes = sc->outbytes;
-	if ( sc->outrate < speed )
-		sc->outrate = speed;
-	sc->inlast++;
-	splx(s);
-
-	if ((sc->inlast > QUITE_A_WHILE)
-	&& (sc->out_deficit > LOTS_OF_PACKETS)) {
-		log(LOG_ERR, "ar%d: No response from remote end\n", sc->unit);
-		s = splimp();
-		ar_down(sc);
-		ar_up(sc);
-		sc->inlast = sc->out_deficit = 0;
-		splx(s);
-	} else if ( sc->xmit_busy ) { /* no TX -> no TX timeouts */
-		if (sc->out_dog == 0) { 
-			log(LOG_ERR, "ar%d: Transmit failure.. no clock?\n",
-					sc->unit);
-			s = splimp();
-			arwatchdog(sc);
-#if 0
-			ar_down(sc);
-			ar_up(sc);
-#endif
-			splx(s);
-			sc->inlast = sc->out_deficit = 0;
-		} else {
-			sc->out_dog--;
-		}
-	}
-	sc->handle = timeout(ngar_watchdog_frame, sc, hz);
-}
-
-/***********************************************************************
- * This section contains the methods for the Netgraph interface
- ***********************************************************************/
-/*
- * It is not possible or allowable to create a node of this type.
- * If the hardware exists, it will already have created it.
- */
-static	int
-ngar_constructor(node_p node)
-{
-	return (EINVAL);
-}
-
-/*
- * give our ok for a hook to be added...
- * If we are not running this should kick the device into life.
- * The hook's private info points to our stash of info about that
- * channel.
- */
-static int
-ngar_newhook(node_p node, hook_p hook, const char *name)
-{
-	struct ar_softc *	sc = NG_NODE_PRIVATE(node);
-
-	/*
-	 * check if it's our friend the debug hook
-	 */
-	if (strcmp(name, NG_AR_HOOK_DEBUG) == 0) {
-		NG_HOOK_SET_PRIVATE(hook, NULL); /* paranoid */
-		sc->debug_hook = hook;
-		return (0);
-	}
-
-	/*
-	 * Check for raw mode hook.
-	 */
-	if (strcmp(name, NG_AR_HOOK_RAW) != 0) {
-		return (EINVAL);
-	}
-	NG_HOOK_SET_PRIVATE(hook, sc);
-	sc->hook = hook;
-	sc->datahooks++;
-	ar_up(sc);
-	return (0);
-}
-
-/*
- * incoming messages.
- * Just respond to the generic TEXT_STATUS message
- */
-static	int
-ngar_rcvmsg(node_p node, item_p item, hook_p lasthook)
-{
-	struct ar_softc *	sc;
-	struct ng_mesg *resp = NULL;
-	int error = 0;
-	struct ng_mesg *msg;
-
-	NGI_GET_MSG(item, msg);
-	sc = NG_NODE_PRIVATE(node);
-	switch (msg->header.typecookie) {
-	case	NG_AR_COOKIE: 
-		error = EINVAL;
-		break;
-	case	NGM_GENERIC_COOKIE: 
-		switch(msg->header.cmd) {
-		case NGM_TEXT_STATUS: {
-			char        *arg;
-			int pos = 0;
-
-			int resplen = sizeof(struct ng_mesg) + 512;
-			NG_MKRESPONSE(resp, msg, resplen, M_NOWAIT);
-			if (resp == NULL) {
-				error = ENOMEM;
-				break;
-			}
-			arg = (resp)->data;
-			pos = sprintf(arg, "%ld bytes in, %ld bytes out\n"
-			    "highest rate seen: %ld B/S in, %ld B/S out\n",
-			sc->inbytes, sc->outbytes,
-			sc->inrate, sc->outrate);
-			pos += sprintf(arg + pos,
-				"%ld output errors\n",
-			    	sc->oerrors);
-			pos += sprintf(arg + pos,
-				"ierrors = %ld, %ld, %ld, %ld\n",
-			    	sc->ierrors[0],
-			    	sc->ierrors[1],
-			    	sc->ierrors[2],
-			    	sc->ierrors[3]);
-
-			resp->header.arglen = pos + 1;
-			break;
-		      }
-		default:
-		 	error = EINVAL;
-		 	break;
-		    }
-		break;
-	default:
-		error = EINVAL;
-		break;
-	}
-	/* Take care of synchronous response, if any */
-	NG_RESPOND_MSG(error, node, item, resp);
-	NG_FREE_MSG(msg);
-	return (error);
-}
-
-/*
- * get data from another node and transmit it to the correct channel
- */
-static int
-ngar_rcvdata(hook_p hook, item_p item)
-{
-	int s;
-	int error = 0;
-	struct ar_softc * sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
-	struct ifqueue	*xmitq_p;
-	struct mbuf *m;
-	meta_p meta;
-	
-	NGI_GET_M(item, m);
-	NGI_GET_META(item, meta);
-	NG_FREE_ITEM(item);
-	/*
-	 * data doesn't come in from just anywhere (e.g control hook)
-	 */
-	if ( NG_HOOK_PRIVATE(hook) == NULL) {
-		error = ENETDOWN;
-		goto bad;
-	}
-
-	/* 
-	 * Now queue the data for when it can be sent
-	 */
-	if (meta && meta->priority > 0) {
-		xmitq_p = (&sc->xmitq_hipri);
-	} else {
-		xmitq_p = (&sc->xmitq);
-	}
-	s = splimp();
-	IF_LOCK(xmitq_p);
-	if (_IF_QFULL(xmitq_p)) {
-		_IF_DROP(xmitq_p);
-		IF_UNLOCK(xmitq_p);
-		splx(s);
-		error = ENOBUFS;
-		goto bad;
-	}
-	_IF_ENQUEUE(xmitq_p, m);
-	IF_UNLOCK(xmitq_p);
-	arstart(sc);
-	splx(s);
-	return (0);
-
-bad:
-	/* 
-	 * It was an error case.
-	 * check if we need to free the mbuf, and then return the error
-	 */
-	NG_FREE_M(m);
-	NG_FREE_META(meta);
-	return (error);
-}
-
-/*
- * do local shutdown processing..
- * this node will refuse to go away, unless the hardware says to..
- * don't unref the node, or remove our name. just clear our links up.
- */
-static	int
-ngar_shutdown(node_p node)
-{
-	struct ar_softc * sc = NG_NODE_PRIVATE(node);
-
-	ar_down(sc);
-	NG_NODE_UNREF(node);
-	/* XXX need to drain the output queues! */
-
-	/* The node is dead, long live the node! */
-	/* stolen from the attach routine */
-	if (ng_make_node_common(&typestruct, &sc->node) != 0)
-		return (0);
-	sprintf(sc->nodename, "%s%d", NG_AR_NODE_TYPE, sc->unit);
-	if (ng_name_node(sc->node, sc->nodename)) {
-		sc->node = NULL;
-		printf("node naming failed\n");
-		NG_NODE_UNREF(sc->node); /* node dissappears */
-		return (0);
-	}
-	NG_NODE_SET_PRIVATE(sc->node, sc);
-	sc->running = 0;
-	return (0);
-}
-
-/* already linked */
-static	int
-ngar_connect(hook_p hook)
-{
-	/* probably not at splnet, force outward queueing */
-	NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
-	/* be really amiable and just say "YUP that's OK by me! " */
-	return (0);
-}
-
-/*
- * notify on hook disconnection (destruction)
- *
- * Invalidate the private data associated with this dlci.
- * For this type, removal of the last link resets tries to destroy the node.
- * As the device still exists, the shutdown method will not actually
- * destroy the node, but reset the device and leave it 'fresh' :)
- *
- * The node removal code will remove all references except that owned by the
- * driver. 
- */
-static	int
-ngar_disconnect(hook_p hook)
-{
-	struct ar_softc * sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
-	int	s;
-	/*
-	 * If it's the data hook, then free resources etc.
-	 */
-	if (NG_HOOK_PRIVATE(hook)) {
-		s = splimp();
-		sc->datahooks--;
-		if (sc->datahooks == 0)
-			ar_down(sc);
-		splx(s);
-	} else {
-		sc->debug_hook = NULL;
-	}
-	return (0);
-}
-
-/*
- * called during bootup
- * or LKM loading to put this type into the list of known modules
- */
-static void
-ngar_init(void *ignored)
-{
-	if (ng_newtype(&typestruct))
-		printf("ngar install failed\n");
-	ngar_done_init = 1;
-}
-#endif /* NETGRAPH */
-
-/*
- ********************************* END ************************************
- */
diff --git a/sys/i386/isa/if_ar.h b/sys/i386/isa/if_ar.h
deleted file mode 100644
index 875e42a..0000000
--- a/sys/i386/isa/if_ar.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * if_ar.h
- *
- * Copyright (C) 1997-1999 Whistle Communications Inc.
- * All rights reserved.
- *
- * Subject to the following obligations and disclaimer of warranty, use and
- * redistribution of this software, in source or object code forms, with or
- * without modifications are expressly permitted by Whistle Communications;
- * provided, however, that:
- * 1. Any and all reproductions of the source or object code must include the
- *    copyright notice above and the following disclaimer of warranties; and
- * 2. No rights are granted, in any manner or form, to use Whistle
- *    Communications, Inc. trademarks, including the mark "WHISTLE
- *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
- *    such appears in the above copyright notice or in the software.
- * 
- * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
- * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
- * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
- * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
- * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
- * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
- * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
- * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
- * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
- * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
- * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
- *
- * $FreeBSD$
- */
-
-#ifndef _I386_ISA_IF_AR_H_
-#define _I386_ISA_IF_AR_H_
-
-/* Node type name and type cookie */
-#define NG_AR_NODE_TYPE		"sync_ar"
-#define NG_AR_COOKIE		860552149
-
-/* Netgraph hooks */
-#define NG_AR_HOOK_DEBUG	"debug"
-#define NG_AR_HOOK_RAW		"rawdata"
-
-#endif /* _I386_ISA_IF_AR_H_ */
-
diff --git a/sys/i386/isa/if_arregs.h b/sys/i386/isa/if_arregs.h
deleted file mode 100644
index 552d20e..0000000
--- a/sys/i386/isa/if_arregs.h
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
- * Copyright (c) 1995 - 2001 John Hay.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the author nor the names of any co-contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY [your name] 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 REGENTS 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.
- *
- * $FreeBSD$
- */
-#ifndef _IF_ARREGS_H_
-#define _IF_ARREGS_H_
-
-#define NCHAN			2    /* A HD64570 chip have 2 channels */
-#define NPORT			4    /* A ArNet board can have 4 ports or */
-				     /* channels */
-
-#define AR_BUF_SIZ		512
-#define AR_TX_BLOCKS		2
-#define ARC_IO_SIZ		0x10
-#define ARC_WIN_SIZ		0x00004000
-#define ARC_WIN_MSK		(ARC_WIN_SIZ - 1)
-#define ARC_WIN_SHFT		14
-
-/* Some PCI specific offsets. */
-#define AR_PCI_SCA_1_OFFSET	0x00040000
-#define AR_PCI_SCA_2_OFFSET	0x00040400
-#define AR_PCI_ORBASE_OFFSET	0x00041000
-#define AR_PCI_SCA_PCR		0x0208
-#define AR_PCI_SCA_DMER		0x0309
-/* PCI Legacy (below 1M) offsets. */
-#define AR_PCI_L_SCA_1_OFFSET	0x00004000
-#define AR_PCI_L_SCA_2_OFFSET	0x00004400
-#define AR_PCI_L_ORBASE_OFFSET	0x00005000
-
-#define AR_ID_5			0x00 /* RO, Card probe '5' */
-#define AR_ID_7			0x01 /* RO, Card probe '7' */
-#define AR_ID_0			0x02 /* RO, Card probe '0' */
-#define AR_BMI			0x03 /* RO, Bus, mem and interface type */
-#define AR_REV			0x04 /* RO, Adapter revision */
-#define AR_PNUM			0x05 /* RO, Port number */
-#define AR_HNDSH		0x06 /* RO, Supported handshake */
-#define AR_ISTAT		0x07 /* RO, DCD and Interrupt status */
-#define AR_MSCA_EN		0x08 /* WO, Memory and SCA enable */
-#define AR_TXC_DTR0		0x09 /* WO, Tx Clock and DTR control 0 + 1 */
-#define AR_SEC_PAL		0x0A /* RW, Security PAL */
-#define AR_INT_ACK0		0x0B /* RO, Interrupt Acknowledge 0 + 1 */
-#define AR_INT_SEL		0x0C /* RW, Interrupt Select */
-#define AR_MEM_SEL		0x0D /* RW, Memory Select */
-#define AR_INT_ACK2		0x0E /* RO, Interrupt Acknowledge 2 + 3 */
-#define AR_TXC_DTR2		0x0E /* WO, Tx Clock and DTR control 2 + 3 */
-/* PCI only */
-#define AR_PIMCTRL		0x4C /* RW, PIM and LEDs */
-#define AR_INT_SCB		0x50 /* RO, Interrupt Scoreboard */
-
-#define AR_REV_MSK		0x0F
-#define AR_WSIZ_MSK		0xE0
-#define AR_WSIZ_SHFT		5
-/* Bus memory and interface type */
-#define AR_BUS_MSK		0x03
-#define AR_BUS_ISA		0x00
-#define AR_BUS_MCA		0x01
-#define AR_BUS_EISA		0x02
-#define AR_BUS_PCI		0x03
-
-#define AR_MEM_MSK		0x1C
-#define AR_MEM_SHFT		0x02
-#define AR_MEM_64K		0x00
-#define AR_MEM_128K		0x04
-#define AR_MEM_256K		0x08
-#define AR_MEM_512K		0x0C
-
-/*
- * EIA-232
- * V.35/EIA-232
- * EIA-530
- * X.21
- * EIA-530/X.21 Combo
- */
-#define AR_IFACE_MSK		0xE0
-#define AR_IFACE_SHFT		0x05
-#define AR_IFACE_EIA_232	0x00  /* Only on the 570 card, not 570i */
-#define AR_IFACE_V_35		0x20  /* Selectable between V.35 and EIA-232 */
-#define AR_IFACE_EIA_530	0x40
-#define AR_IFACE_X_21		0x60
-#define AR_IFACE_COMBO		0xC0  /* X.21 / EIA-530 */
-#define AR_IFACE_PIM		0xE0  /* PIM module */
-#define AR_IFACE_LOOPBACK	0xFE
-#define AR_IFACE_UNKNOWN	0xFF
-
-/* Supported Handshake signals */
-#define AR_SHSK_DTR		0x01
-#define AR_SHSK_RTS		0x02
-#define AR_SHSK_CTS		0x10
-#define AR_SHSK_DSR		0x20
-#define AR_SHSK_RI		0x40
-#define AR_SHSK_DCD		0x80
-
-/* DCD and Interrupt status */
-#define AR_BD_INT		0x01
-#define AR_INT_0		0x20
-#define AR_INT_1		0x40
-
-#define AR_DCD_MSK		0x1E
-#define AR_DCD_SHFT		0x01
-#define AR_DCD_0		0x02
-#define AR_DCD_1		0x04
-#define AR_DCD_2		0x08
-#define AR_DCD_3		0x10
-
-/* Memory and SCA enable */
-#define AR_WIN_MSK		0x1F
-
-#define AR_SEL_SCA_0		0x00
-#define AR_SEL_SCA_1		0x20
-#define AR_ENA_SCA		0x40
-#define AR_ENA_MEM		0x80
-
-/* Transmit Clock and DTR and RESET */
-#define AR_TXC_DTR_TX0		0x01
-#define AR_TXC_DTR_TX1		0x02
-#define AR_TXC_DTR_DTR0		0x04
-#define AR_TXC_DTR_DTR1		0x08
-#define AR_TXC_DTR_TXCS0	0x10
-#define AR_TXC_DTR_TXCS1	0x20
-#define AR_TXC_DTR_NOTRESET	0x40
-#define AR_TXC_DTR_RESET	0x00
-
-/* Interrupt select register */
-#define AR_INTS_CEN		0x01
-#define AR_INTS_ISEL0		0x02
-#define AR_INTS_ISEL1		0x04
-#define AR_INTS_ISEL2		0x08
-#define AR_INTS_CMA14		0x10
-#define AR_INTS_CMA15		0x20
-
-/* Advanced PIM Control */
-#define AR_PIM_STROBE		0x01
-#define AR_PIM_DATA		0x02
-#define AR_PIM_MODEG		0x04
-#define AR_PIM_A2D_STROBE	0x04
-#define AR_PIM_MODEY		0x08
-#define AR_PIM_A2D_DOUT		0x08
-#define AR_PIM_AUTO_LED		0x10
-#define AR_PIM_INT		0x20
-
-#define AR_PIM_RESET		0x00 /* MODEG and MODEY 0 */
-#define AR_PIM_READ		AR_PIM_MODEG
-#define AR_PIM_WRITE		AR_PIM_MODEY
-
-#define ARC_GET_WIN(addr)	((addr >> ARC_WIN_SHFT) & AR_WIN_MSK)
-
-#define ARC_SET_MEM(iobase,win)	outb(iobase+AR_MSCA_EN, AR_ENA_MEM | \
-				ARC_GET_WIN(win))
-#define ARC_SET_SCA(iobase,ch)	outb(iobase+AR_MSCA_EN, AR_ENA_MEM | \
-				AR_ENA_SCA | (ch ? AR_SEL_SCA_1:AR_SEL_SCA_0))
-#define ARC_SET_OFF(iobase)	outb(iobase+AR_MSCA_EN, 0)
-
-struct ar_hardc {
-	int cunit;
-	struct ar_softc *sc;
-	u_short iobase;
-	int isa_irq;
-	int numports;
-	caddr_t mem_start;
-	caddr_t mem_end;
-	caddr_t plx_mem;
-	u_char *orbase;
-
-	u_int memsize;		/* in bytes */
-	u_int winsize;		/* in bytes */
-	u_int winmsk;
-	u_char bustype;		/* ISA, MCA, PCI.... */
-	u_char interface[NPORT];/* X21, V.35, EIA-530.... */
-	u_char revision;
-	u_char handshake;	/* handshake lines supported by card. */
-
-	u_char txc_dtr[NPORT/NCHAN]; /* the register is write only */
-	u_int txc_dtr_off[NPORT/NCHAN];
-
-	sca_regs *sca[NPORT/NCHAN];
-
-	bus_space_tag_t bt;
-	bus_space_handle_t bh;
-	int rid_ioport;
-	int rid_memory;
-	int rid_plx_memory;
-	int rid_irq;
-	int rid_drq;
-	struct resource* res_ioport;	/* resource for port range */
-	struct resource* res_memory;	/* resource for mem range */
-	struct resource* res_plx_memory;
-	struct resource* res_irq;	/* resource for irq range */
-	struct resource* res_drq;	/* resource for dma channel */
-	void	*intr_cookie;
-};
-
-extern devclass_t ar_devclass;
-
-int ar_allocate_ioport(device_t device, int rid, u_long size);
-int ar_allocate_irq(device_t device, int rid, u_long size);
-int ar_allocate_memory(device_t device, int rid, u_long size);
-int ar_allocate_plx_memory(device_t device, int rid, u_long size);
-int ar_deallocate_resources(device_t device);
-int ar_attach(device_t device);
-int ar_detach (device_t);
-
-#endif /* _IF_ARREGS_H_ */
diff --git a/sys/i386/isa/if_sr.c b/sys/i386/isa/if_sr.c
deleted file mode 100644
index a52369b..0000000
--- a/sys/i386/isa/if_sr.c
+++ /dev/null
@@ -1,3365 +0,0 @@
-/*
- * Copyright (c) 1996 John Hay.
- * Copyright (c) 1996 SDL Communications, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the author nor the names of any co-contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
- *
- * $FreeBSD$
- */
-
-/*
- * Programming assumptions and other issues.
- *
- * Only a 16K window will be used.
- *
- * The descriptors of a DMA channel will fit in a 16K memory window.
- *
- * The buffers of a transmit DMA channel will fit in a 16K memory window.
- *
- * When interface is going up, handshaking is set and it is only cleared
- * when the interface is down'ed.
- *
- * There should be a way to set/reset Raw HDLC/PPP, Loopback, DCE/DTE,
- * internal/external clock, etc.....
- *
- */
-
-#include "sr.h"
-#include "opt_netgraph.h"
-#ifdef NETGRAPH
-#include <i386/isa/if_sr.h>
-#endif	/* NETGRAPH */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/malloc.h>
-#include <sys/mbuf.h>
-#include <sys/sockio.h>
-#include <sys/socket.h>
-#include <sys/bus.h>
-
-#include <net/if.h>
-#ifdef NETGRAPH
-#include <sys/syslog.h>
-#else /* NETGRAPH */
-#include <net/if_sppp.h>
-
-#include <net/bpf.h>
-#endif	/* NETGRAPH */
-
-#include <machine/md_var.h>
-
-#include <i386/isa/if_srregs.h>
-#include <i386/isa/ic/hd64570.h>
-#include <i386/isa/isa_device.h>
-
-#ifdef NETGRAPH
-#include <netgraph/ng_message.h>
-#include <netgraph/netgraph.h>
-#endif /* NETGRAPH */
-/* #define USE_MODEMCK */
-
-#ifndef COMPAT_OLDISA
-#error "The sr device requires the old isa compatibility shims"
-#endif
-
-#ifndef BUGGY
-#define BUGGY		0
-#endif
-
-#ifndef NETGRAPH
-#define PPP_HEADER_LEN	4
-#endif /* NETGRAPH */
-
-/*
- * These macros are used to hide the difference between the way the
- * ISA N2 cards and the PCI N2 cards access the Hitachi 64570 SCA.
- */
-#define SRC_GET8(base,off)	(*hc->src_get8)(base,(u_int)&off)
-#define SRC_GET16(base,off)	(*hc->src_get16)(base,(u_int)&off)
-#define SRC_PUT8(base,off,d)	(*hc->src_put8)(base,(u_int)&off,d)
-#define SRC_PUT16(base,off,d)	(*hc->src_put16)(base,(u_int)&off,d)
-
-/*
- * These macros enable/disable the DPRAM and select the correct
- * DPRAM page.
- */
-#define SRC_GET_WIN(addr)	((addr >> SRC_WIN_SHFT) & SR_PG_MSK)
-
-#define SRC_SET_ON(iobase)	outb(iobase+SR_PCR,			     \
-					SR_PCR_MEM_WIN | inb(iobase+SR_PCR))
-#define SRC_SET_MEM(iobase,win)	outb(iobase+SR_PSR, SRC_GET_WIN(win) |	     \
-					(inb(iobase+SR_PSR) & ~SR_PG_MSK))
-#define SRC_SET_OFF(iobase)	outb(iobase+SR_PCR,			     \
-					~SR_PCR_MEM_WIN & inb(iobase+SR_PCR))
-
-/*
- * Define the hardware (card information) structure needed to keep
- * track of the device itself... There is only one per card.
- */
-struct sr_hardc {
-	struct	sr_hardc *next;		/* PCI card linkage */
-	struct	sr_softc *sc;		/* software channels */
-	int	cunit;			/* card w/in system */
-
-	u_short	iobase;			/* I/O Base Address */
-	int	cardtype;
-	int	numports;		/* # of ports on cd */
-	int	mempages;
-	u_int	memsize;		/* DPRAM size: bytes */
-	u_int	winmsk;
-	vm_offset_t	sca_base;
-	vm_offset_t	mem_pstart;	/* start of buffer */
-	caddr_t	mem_start;		/* start of DP RAM */
-	caddr_t	mem_end;		/* end of DP RAM */
-	caddr_t	plx_base;
-
-	sca_regs	*sca;		/* register array */
-
-	/*
-	 * We vectorize the following functions to allow re-use between the
-	 * ISA card's needs and those of the PCI card.
-	 */
-	void    (*src_put8)(u_int base, u_int off, u_int val);
-	void    (*src_put16)(u_int base, u_int off, u_int val);
-	u_int	(*src_get8)(u_int base, u_int off);
-	u_int	(*src_get16)(u_int base, u_int off);
-};
-
-static int	next_sc_unit = 0;
-#ifndef NETGRAPH
-static int	sr_watcher = 0;
-#endif /* NETGRAPH */
-static struct	sr_hardc sr_hardc[NSR];
-static struct	sr_hardc *sr_hardc_pci;
-
-/*
- * Define the software interface for the card... There is one for
- * every channel (port).
- */
-struct sr_softc {
-#ifndef NETGRAPH
-	struct	sppp ifsppp;	/* PPP service w/in system */
-#endif /* NETGRAPH */
-	struct	sr_hardc *hc;	/* card-level information */
-
-	int	unit;		/* With regard to all sr devices */
-	int	subunit;	/* With regard to this card */
-
-	struct	buf_block {
-		u_int	txdesc;	/* DPRAM offset */
-		u_int	txstart;/* DPRAM offset */
-		u_int	txend;	/* DPRAM offset */
-		u_int	txtail;	/* # of 1st free gran */
-		u_int	txmax;	/* # of free grans */
-		u_int	txeda;	/* err descr addr */
-	} block[SR_TX_BLOCKS];
-
-	char	xmit_busy;	/* Transmitter is busy */
-	char	txb_inuse;	/* # of tx grans in use */
-	u_int	txb_new;	/* ndx to new buffer */
-	u_int	txb_next_tx;	/* ndx to next gran rdy tx */
-
-	u_int	rxdesc;		/* DPRAM offset */
-	u_int	rxstart;	/* DPRAM offset */
-	u_int	rxend;		/* DPRAM offset */
-	u_int	rxhind;		/* ndx to the hd of rx bufrs */
-	u_int	rxmax;		/* # of avail grans */
-
-	u_int	clk_cfg;	/* Clock configuration */
-
-	int	scachan;	/* channel # on card */
-#ifdef NETGRAPH
-	int	running;	/* something is attached so we are running */
-	int	dcd;		/* do we have dcd? */
-	/* ---netgraph bits --- */
-	char		nodename[NG_NODELEN + 1]; /* store our node name */
-	int		datahooks;	/* number of data hooks attached */
-	node_p		node;		/* netgraph node */
-	hook_p		hook;		/* data hook */
-	hook_p		debug_hook;
-	struct ifqueue	xmitq_hipri;	/* hi-priority transmit queue */
-	struct ifqueue	xmitq;		/* transmit queue */
-	int		flags;		/* state */
-#define	SCF_RUNNING	0x01		/* board is active */
-#define	SCF_OACTIVE	0x02		/* output is active */
-	int		out_dog;	/* watchdog cycles output count-down */
-#if ( __FreeBSD__ >= 3 )
-	struct callout_handle handle;	/* timeout(9) handle */
-#endif
-	u_long		inbytes, outbytes;	/* stats */
-	u_long		lastinbytes, lastoutbytes; /* a second ago */
-	u_long		inrate, outrate;	/* highest rate seen */
-	u_long		inlast;		/* last input N secs ago */
-	u_long		out_deficit;	/* output since last input */
-	u_long		oerrors, ierrors[6];
-	u_long		opackets, ipackets;
-#endif /* NETGRAPH */
-};
-
-#ifdef NETGRAPH
-#define	DOG_HOLDOFF	6	/* dog holds off for 6 secs */
-#define	QUITE_A_WHILE	300	/* 5 MINUTES */
-#define	LOTS_OF_PACKETS	100	
-#endif /* NETGRAPH */
-
-/*
- * List of valid interrupt numbers for the N2 ISA card.
- */
-static int sr_irqtable[16] = {
-	0,	/*  0 */
-	0,	/*  1 */
-	0,	/*  2 */
-	1,	/*  3 */
-	1,	/*  4 */
-	1,	/*  5 */
-	0,	/*  6 */
-	1,	/*  7 */
-	0,	/*  8 */
-	0,	/*  9 */
-	1,	/* 10 */
-	1,	/* 11 */
-	1,	/* 12 */
-	0,	/* 13 */
-	0,	/* 14 */
-	1	/* 15 */
-};
-
-static int	srprobe(struct isa_device *id);
-static int	srattach_isa(struct isa_device *id);
-
-struct	isa_driver srdriver = {
-	INTR_TYPE_NET,
-	srprobe,
-	srattach_isa,
-	"sr"
-};
-COMPAT_ISA_DRIVER(sr, srdriver);
-
-/*
- * Baud Rate table for Sync Mode.
- * Each entry consists of 3 elements:
- * Baud Rate (x100) , TMC, BR
- *
- * Baud Rate = FCLK / TMC / 2^BR
- * Baud table for Crystal freq. of 9.8304 Mhz
- */
-#ifdef N2_TEST_SPEED
-struct rate_line {
-	int	target;		/* target rate/100 */
-	int	tmc_reg;	/* TMC register value */
-	int	br_reg;		/* BR (BaudRateClk) selector */
-} n2_rates[] = {
-	/* Baudx100	TMC		BR */
-	{ 3,		128,		8 },
-	{ 6,		128,		7 },
-	{ 12,		128,		6 },
-	{ 24,		128,		5 },
-	{ 48,		128,		4 },
-	{ 96,		128,		3 },
-	{ 192,		128,		2 },
-	{ 384,		128,		1 },
-	{ 560,		88,		1 },
-	{ 640,		77,		1 },
-	{ 1280,		38,		1 },
-	{ 2560,		19,		1 },
-	{ 5120,		10,		1 },
-	{ 10000,	5,		1 },
-	{ 15000,	3,		1 },
-	{ 25000,	2,		1 },
-	{ 50000,	1,		1 },
-	{ 0,		0,		0 }
-};
-
-int	sr_test_speed[] = {
-	N2_TEST_SPEED,
-	N2_TEST_SPEED
-};
-
-int	etc0vals[] = {
-	SR_MCR_ETC0,		/* ISA channel 0 */
-	SR_MCR_ETC1,		/* ISA channel 1 */
-	SR_FECR_ETC0,		/* PCI channel 0 */
-	SR_FECR_ETC1		/* PCI channel 1 */
-};
-#endif
-
-struct	sr_hardc *srattach_pci(int unit, vm_offset_t plx_vaddr,
-				vm_offset_t sca_vaddr);
-void	srintr_hc(struct sr_hardc *hc);
-
-static ointhand2_t srintr;
-
-static int	srattach(struct sr_hardc *hc);
-static void	sr_xmit(struct sr_softc *sc);
-#ifndef NETGRAPH
-static void	srstart(struct ifnet *ifp);
-static int	srioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
-static void	srwatchdog(struct ifnet *ifp);
-#else
-static void	srstart(struct sr_softc *sc);
-static void	srwatchdog(struct sr_softc *sc);
-#endif /* NETGRAPH */
-static int	sr_packet_avail(struct sr_softc *sc, int *len, u_char *rxstat);
-static void	sr_copy_rxbuf(struct mbuf *m, struct sr_softc *sc, int len);
-static void	sr_eat_packet(struct sr_softc *sc, int single);
-static void	sr_get_packets(struct sr_softc *sc);
-
-static void	sr_up(struct sr_softc *sc);
-static void	sr_down(struct sr_softc *sc);
-static void	src_init(struct sr_hardc *hc);
-static void	sr_init_sca(struct sr_hardc *hc);
-static void	sr_init_msci(struct sr_softc *sc);
-static void	sr_init_rx_dmac(struct sr_softc *sc);
-static void	sr_init_tx_dmac(struct sr_softc *sc);
-static void	sr_dmac_intr(struct sr_hardc *hc, u_char isr);
-static void	sr_msci_intr(struct sr_hardc *hc, u_char isr);
-static void	sr_timer_intr(struct sr_hardc *hc, u_char isr);
-#ifndef NETGRAPH
-static void	sr_modemck(void *x);
-#else
-static void	sr_modemck(struct sr_softc *x);
-#endif /* NETGRAPH */
-
-static u_int	src_get8_io(u_int base, u_int off);
-static u_int	src_get16_io(u_int base, u_int off);
-static void	src_put8_io(u_int base, u_int off, u_int val);
-static void	src_put16_io(u_int base, u_int off, u_int val);
-static u_int	src_get8_mem(u_int base, u_int off);
-static u_int	src_get16_mem(u_int base, u_int off);
-static void	src_put8_mem(u_int base, u_int off, u_int val);
-static void	src_put16_mem(u_int base, u_int off, u_int val);
-
-#ifdef NETGRAPH
-static	void	ngsr_watchdog_frame(void * arg);
-static	void	ngsr_init(void* ignored);
-
-static ng_constructor_t	ngsr_constructor;
-static ng_rcvmsg_t	ngsr_rcvmsg;
-static ng_shutdown_t	ngsr_shutdown;
-static ng_newhook_t	ngsr_newhook;
-/*static ng_findhook_t	ngsr_findhook; */
-static ng_connect_t	ngsr_connect;
-static ng_rcvdata_t	ngsr_rcvdata;
-static ng_disconnect_t	ngsr_disconnect;
-
-static struct ng_type typestruct = {
-	NG_ABI_VERSION,
-	NG_SR_NODE_TYPE,
-	NULL,
-	ngsr_constructor,
-	ngsr_rcvmsg,
-	ngsr_shutdown,
-	ngsr_newhook,
-	NULL,
-	ngsr_connect,
-	ngsr_rcvdata,
-	ngsr_disconnect,
-	NULL
-};
-
-static int	ngsr_done_init = 0;
-#endif /* NETGRAPH */
-
-/*
- * I/O for ISA N2 card(s)
- */
-#define SRC_REG(iobase,y)	((((y) & 0xf) + (((y) & 0xf0) << 6) +       \
-				(iobase)) | 0x8000)
-
-static u_int
-src_get8_io(u_int base, u_int off)
-{
-	return inb(SRC_REG(base, off));
-}
-
-static u_int
-src_get16_io(u_int base, u_int off)
-{
-	return inw(SRC_REG(base, off));
-}
-
-static void
-src_put8_io(u_int base, u_int off, u_int val)
-{
-	outb(SRC_REG(base, off), val);
-}
-
-static void
-src_put16_io(u_int base, u_int off, u_int val)
-{
-	outw(SRC_REG(base, off), val);
-}
-
-/*
- * I/O for PCI N2 card(s)
- */
-#define SRC_PCI_SCA_REG(y)	((y & 2) ? ((y & 0xfd) + 0x100) : y)
-
-static u_int
-src_get8_mem(u_int base, u_int off)
-{
-	return *((u_char *)(base + SRC_PCI_SCA_REG(off)));
-}
-
-static u_int
-src_get16_mem(u_int base, u_int off)
-{
-	return *((u_short *)(base + SRC_PCI_SCA_REG(off)));
-}
-
-static void
-src_put8_mem(u_int base, u_int off, u_int val)
-{
-	*((u_char *)(base + SRC_PCI_SCA_REG(off))) = (u_char)val;
-}
-
-static void
-src_put16_mem(u_int base, u_int off, u_int val)
-{
-	*((u_short *)(base + SRC_PCI_SCA_REG(off))) = (u_short)val;
-}
-
-/*
- * Probe for an ISA card. If it is there, size its memory. Then get the
- * rest of its information and fill it in.
- */
-static int
-srprobe(struct isa_device *id)
-{
-	struct sr_hardc *hc = &sr_hardc[id->id_unit];
-	u_int pgs, i, tmp;
-	u_short port;
-	u_short *smem;
-	u_char mar;
-	sca_regs *sca = 0;
-
-	/*
-	 * Now see if the card is realy there.
-	 */
-	hc->cardtype = SR_CRD_N2;
-
-	/*
-	 * We have to fill these in early because the SRC_PUT* and SRC_GET*
-	 * macros use them.
-	 */
-	hc->src_get8 = src_get8_io;
-	hc->src_get16 = src_get16_io;
-	hc->src_put8 = src_put8_io;
-	hc->src_put16 = src_put16_io;
-
-	hc->sca = 0;
-	port = id->id_iobase;
-	hc->numports = NCHAN;	/* assumed # of channels on the card */
-
-	if (id->id_flags & SR_FLAGS_NCHAN_MSK)
-		hc->numports = id->id_flags & SR_FLAGS_NCHAN_MSK;
-
-	outb(port + SR_PCR, 0);	/* turn off the card */
-
-	/*
-	 * Next, we'll test the Base Address Register to retension of
-	 * data... ... seeing if we're *really* talking to an N2.
-	 */
-	for (i = 0; i < 0x100; i++) {
-		outb(port + SR_BAR, i);
-		inb(port + SR_PCR);
-		tmp = inb(port + SR_BAR);
-		if (tmp != i) {
-			printf("sr%d: probe failed BAR %x, %x.\n",
-			       id->id_unit, i, tmp);
-			return 0;
-		}
-	}
-
-	/*
-	 * Now see if we can see the SCA.
-	 */
-	outb(port + SR_PCR, SR_PCR_SCARUN | inb(port + SR_PCR));
-	SRC_PUT8(port, sca->wcrl, 0);
-	SRC_PUT8(port, sca->wcrm, 0);
-	SRC_PUT8(port, sca->wcrh, 0);
-	SRC_PUT8(port, sca->pcr, 0);
-	SRC_PUT8(port, sca->msci[0].tmc, 0);
-	inb(port);
-
-	tmp = SRC_GET8(port, sca->msci[0].tmc);
-	if (tmp != 0) {
-		printf("sr%d: Error reading SCA 0, %x\n", id->id_unit, tmp);
-		return 0;
-	}
-	SRC_PUT8(port, sca->msci[0].tmc, 0x5A);
-	inb(port);
-
-	tmp = SRC_GET8(port, sca->msci[0].tmc);
-	if (tmp != 0x5A) {
-		printf("sr%d: Error reading SCA 0x5A, %x\n", id->id_unit, tmp);
-		return 0;
-	}
-	SRC_PUT16(port, sca->dmac[0].cda, 0);
-	inb(port);
-
-	tmp = SRC_GET16(port, sca->dmac[0].cda);
-	if (tmp != 0) {
-		printf("sr%d: Error reading SCA 0, %x\n", id->id_unit, tmp);
-		return 0;
-	}
-	SRC_PUT16(port, sca->dmac[0].cda, 0x55AA);
-	inb(port);
-
-	tmp = SRC_GET16(port, sca->dmac[0].cda);
-	if (tmp != 0x55AA) {
-		printf("sr%d: Error reading SCA 0x55AA, %x\n",
-		       id->id_unit, tmp);
-		return 0;
-	}
-	/*
-	 * OK, the board's interface registers seem to work. Now we'll see
-	 * if the Dual-Ported RAM is fully accessible...
-	 */
-	outb(port + SR_PCR, SR_PCR_EN_VPM | SR_PCR_ISA16);
-	outb(port + SR_PSR, SR_PSR_WIN_16K);
-
-	/*
-	 * Take the kernel "virtual" address supplied to us and convert
-	 * it to a "real" address. Then program the card to use that.
-	 */
-	mar = (kvtop(id->id_maddr) >> 16) & SR_PCR_16M_SEL;
-	outb(port + SR_PCR, mar | inb(port + SR_PCR));
-	mar = kvtop(id->id_maddr) >> 12;
-	outb(port + SR_BAR, mar);
-	outb(port + SR_PCR, inb(port + SR_PCR) | SR_PCR_MEM_WIN);
-	smem = (u_short *)id->id_maddr;	/* DP RAM Address */
-
-	/*
-	 * Here we will perform the memory scan to size the device.
-	 *
-	 * This is done by marking each potential page with a magic number.
-	 * We then loop through the pages looking for that magic number. As
-	 * soon as we no longer see that magic number, we'll quit the scan,
-	 * knowing that no more memory is present. This provides the number
-	 * of pages present on the card.
-	 *
-	 * Note: We're sizing 16K memory granules.
-	 */
-	for (i = 0; i <= SR_PSR_PG_SEL; i++) {
-		outb(port + SR_PSR,
-		     (inb(port + SR_PSR) & ~SR_PSR_PG_SEL) | i);
-
-		*smem = 0xAA55;
-	}
-
-	for (i = 0; i <= SR_PSR_PG_SEL; i++) {
-		outb(port + SR_PSR,
-		     (inb(port + SR_PSR) & ~SR_PSR_PG_SEL) | i);
-
-		if (*smem != 0xAA55) {
-			/*
-			 * If we have less than 64k of memory, give up. That
-			 * is 4 x 16k pages.
-			 */
-			if (i < 4) {
-				printf("sr%d: Bad mem page %d, mem %x, %x.\n",
-				       id->id_unit, i, 0xAA55, *smem);
-				return 0;
-			}
-			break;
-		}
-		*smem = i;
-	}
-
-	hc->mempages = i;
-	hc->memsize = i * SRC_WIN_SIZ;
-	hc->winmsk = SRC_WIN_MSK;
-	pgs = i;		/* final count of 16K pages */
-
-	/*
-	 * This next loop erases the contents of that page in DPRAM
-	 */
-	for (i = 0; i <= pgs; i++) {
-		outb(port + SR_PSR,
-		     (inb(port + SR_PSR) & ~SR_PSR_PG_SEL) | i);
-		bzero(smem, SRC_WIN_SIZ);
-	}
-
-	SRC_SET_OFF(port);
-
-	/*
-	 * We have a card here, fill in what we can.
-	 */
-	id->id_msize = SRC_WIN_SIZ;
-	hc->iobase = id->id_iobase;
-	hc->sca_base = id->id_iobase;
-	hc->mem_start = id->id_maddr;
-	hc->mem_end = (id->id_maddr + id->id_msize) - 1;
-	hc->mem_pstart = 0;
-	hc->cunit = id->id_unit;
-
-	/*
-	 * Do a little sanity check.
-	 */
-	if (sr_irqtable[ffs(id->id_irq) - 1] == 0)
-		printf("sr%d: Warning: illegal interrupt %d chosen.\n",
-		       id->id_unit, ffs(id->id_irq) - 1);
-
-	/*
-	 * Bogus card configuration
-	 */
-	if ((hc->numports > NCHAN)	/* only 2 ports/card */
-	    ||(hc->memsize > (512 * 1024)))	/* no more than 256K */
-		return 0;
-
-	return SRC_IO_SIZ;	/* return the amount of IO addresses used. */
-}
-
-/*
- * srattach_isa and srattach_pci allocate memory for hardc, softc and
- * data buffers. It also does any initialization that is bus specific.
- * At the end they call the common srattach() function.
- */
-static int
-srattach_isa(struct isa_device *id)
-{
-	u_char mar;
-	struct sr_hardc *hc = &sr_hardc[id->id_unit];
-
-	/*
-	 * Allocate the software interface table(s)
-	 */
-	MALLOC(hc->sc, struct sr_softc *,
-		hc->numports * sizeof(struct sr_softc),
-		M_DEVBUF, M_WAITOK | M_ZERO);
-	if (hc->sc == NULL)
-		return(0);
-
-	id->id_ointr = srintr;
-
-	outb(hc->iobase + SR_PCR, inb(hc->iobase + SR_PCR) | SR_PCR_SCARUN);
-	outb(hc->iobase + SR_PSR, inb(hc->iobase + SR_PSR) | SR_PSR_EN_SCA_DMA);
-	outb(hc->iobase + SR_MCR,
-	     SR_MCR_DTR0 | SR_MCR_DTR1 | SR_MCR_TE0 | SR_MCR_TE1);
-
-	SRC_SET_ON(hc->iobase);
-
-	/*
-	 * Configure the card. Mem address, irq,
-	 */
-	mar = (kvtop(id->id_maddr) >> 16) & SR_PCR_16M_SEL;
-	outb(hc->iobase + SR_PCR,
-	     mar | (inb(hc->iobase + SR_PCR) & ~SR_PCR_16M_SEL));
-	mar = kvtop(id->id_maddr) >> 12;
-	outb(hc->iobase + SR_BAR, mar);
-
-	/*
-	 * Get the TX clock direction and configuration. The default is a
-	 * single external clock which is used by RX and TX.
-	 */
-#ifdef N2_TEST_SPEED
-	if (sr_test_speed[0] > 0)
-		hc->sc[0].clk_cfg = SR_FLAGS_INT_CLK;
-	else if (id->id_flags & SR_FLAGS_0_CLK_MSK)
-		hc->sc[0].clk_cfg =
-		    (id->id_flags & SR_FLAGS_0_CLK_MSK)
-		    >> SR_FLAGS_CLK_SHFT;
-#else
-	if (id->id_flags & SR_FLAGS_0_CLK_MSK)
-		hc->sc[0].clk_cfg =
-		    (id->id_flags & SR_FLAGS_0_CLK_MSK)
-		    >> SR_FLAGS_CLK_SHFT;
-#endif
-
-	if (hc->numports == 2)
-#ifdef N2_TEST_SPEED
-		if (sr_test_speed[1] > 0)
-			hc->sc[0].clk_cfg = SR_FLAGS_INT_CLK;
-		else
-#endif
-		if (id->id_flags & SR_FLAGS_1_CLK_MSK)
-			hc->sc[1].clk_cfg = (id->id_flags & SR_FLAGS_1_CLK_MSK)
-			    >> (SR_FLAGS_CLK_SHFT + SR_FLAGS_CLK_CHAN_SHFT);
-
-	return srattach(hc);
-}
-
-struct sr_hardc *
-srattach_pci(int unit, vm_offset_t plx_vaddr, vm_offset_t sca_vaddr)
-{
-	int numports, pndx;
-	u_int fecr, *fecrp = (u_int *)(sca_vaddr + SR_FECR);
-	struct sr_hardc *hc, **hcp;
-
-	/*
-	 * Configure the PLX. This is magic. I'm doing it just like I'm told
-	 * to. :-)
-	 * 
-	 * offset
-	 *  0x00 - Map Range    - Mem-mapped to locate anywhere
-	 *  0x04 - Re-Map       - PCI address decode enable
-	 *  0x18 - Bus Region   - 32-bit bus, ready enable
-	 *  0x1c - Master Range - include all 16 MB
-	 *  0x20 - Master RAM   - Map SCA Base at 0
-	 *  0x28 - Master Remap - direct master memory enable
-	 *  0x68 - Interrupt    - Enable interrupt (0 to disable)
-	 * 
-	 * Note: This is "cargo cult" stuff.  - jrc
-	 */
-	*((u_int *)(plx_vaddr + 0x00)) = 0xfffff000;
-	*((u_int *)(plx_vaddr + 0x04)) = 1;
-	*((u_int *)(plx_vaddr + 0x18)) = 0x40030043;
-	*((u_int *)(plx_vaddr + 0x1c)) = 0xff000000;
-	*((u_int *)(plx_vaddr + 0x20)) = 0;
-	*((u_int *)(plx_vaddr + 0x28)) = 0xe9;
-	*((u_int *)(plx_vaddr + 0x68)) = 0x10900;
-
-	/*
-	 * Get info from card.
-	 *
-	 * Only look for the second port if the first exists. Too many things
-	 * will break if we have only a second port.
-	 */
-	fecr = *fecrp;
-	numports = 0;
-
-	if (((fecr & SR_FECR_ID0) >> SR_FE_ID0_SHFT) != SR_FE_ID_NONE) {
-		numports++;
-		if (((fecr & SR_FECR_ID1) >> SR_FE_ID1_SHFT) != SR_FE_ID_NONE)
-			numports++;
-	}
-	if (numports == 0)
-		return NULL;
-
-	hc = sr_hardc_pci;
-	hcp = &sr_hardc_pci;
-
-	while (hc) {
-		hcp = &hc->next;
-		hc = hc->next;
-	}
-
-	MALLOC(hc, struct sr_hardc *, sizeof(*hc), M_DEVBUF, M_WAITOK | M_ZERO);
-	if (hc == NULL)
-		return NULL;
-
-	MALLOC(hc->sc, struct sr_softc *, numports * sizeof(struct sr_softc),
-		M_DEVBUF, M_WAITOK | M_ZERO);
-	if (hc->sc == NULL) {
-		FREE(hc, M_DEVBUF);
-		return NULL;
-	}
-	*hcp = hc;
-
-	hc->numports = numports;
-	hc->cunit = unit;
-	hc->cardtype = SR_CRD_N2PCI;
-	hc->plx_base = (caddr_t)plx_vaddr;
-	hc->sca_base = sca_vaddr;
-
-	hc->src_put8 = src_put8_mem;
-	hc->src_put16 = src_put16_mem;
-	hc->src_get8 = src_get8_mem;
-	hc->src_get16 = src_get16_mem;
-
-	/*
-	 * Malloc area for tx and rx buffers. For now allocate SRC_WIN_SIZ
-	 * (16k) for each buffer.
-	 *
-	 * Allocate the block below 16M because the N2pci card can only access
-	 * 16M memory at a time.
-	 *
-	 * (We could actually allocate a contiguous block above the 16MB limit,
-	 * but this would complicate card programming more than we want to
-	 * right now -jrc)
-	 */
-	hc->memsize = 2 * hc->numports * SRC_WIN_SIZ;
-	hc->mem_start = contigmalloc(hc->memsize,
-				     M_DEVBUF,
-				     M_NOWAIT,
-				     0ul,
-				     0xfffffful,
-				     0x10000,
-				     0x1000000);
-
-	if (hc->mem_start == NULL) {
-		printf("src%d: pci: failed to allocate buffer space.\n", unit);
-		return NULL;
-	}
-	hc->winmsk = 0xffffffff;
-	hc->mem_end = (caddr_t)((u_int)hc->mem_start + hc->memsize);
-	hc->mem_pstart = kvtop(hc->mem_start);
-	bzero(hc->mem_start, hc->memsize);
-
-	for (pndx = 0; pndx < numports; pndx++) {
-		int intf_sw;
-		struct sr_softc *sc;
-
-		sc = &hc->sc[pndx];
-
-		switch (pndx) {
-		case 1:
-			intf_sw = fecr & SR_FECR_ID1 >> SR_FE_ID1_SHFT;
-			break;
-		case 0:
-		default:
-			intf_sw = fecr & SR_FECR_ID0 >> SR_FE_ID0_SHFT;
-		}
-
-#ifdef N2_TEST_SPEED
-		if (sr_test_speed[pndx] > 0)
-			sc->clk_cfg = SR_FLAGS_INT_CLK;
-		else
-#endif
-			switch (intf_sw) {
-			default:
-			case SR_FE_ID_RS232:
-			case SR_FE_ID_HSSI:
-			case SR_FE_ID_RS422:
-			case SR_FE_ID_TEST:
-				break;
-
-			case SR_FE_ID_V35:
-				sc->clk_cfg = SR_FLAGS_EXT_SEP_CLK;
-				break;
-
-			case SR_FE_ID_X21:
-				sc->clk_cfg = SR_FLAGS_EXT_CLK;
-				break;
-			}
-	}
-
-	*fecrp = SR_FECR_DTR0
-	    | SR_FECR_DTR1
-	    | SR_FECR_TE0
-	    | SR_FECR_TE1;
-
-	srattach(hc);
-
-	return hc;
-}
-
-/*
- * Register the ports on the adapter.
- * Fill in the info for each port.
-#ifndef NETGRAPH
- * Attach each port to sppp and bpf.
-#endif
- */
-static int
-srattach(struct sr_hardc *hc)
-{
-	struct sr_softc *sc = hc->sc;
-#ifndef NETGRAPH
-	struct ifnet *ifp;
-#endif /* NETGRAPH */
-	int unit;		/* index: channel w/in card */
-
-	/*
-	 * Report Card configuration information before we start configuring
-	 * each channel on the card...
-	 */
-	printf("src%d: %uK RAM (%d mempages) @ %08x-%08x, %u ports.\n",
-	       hc->cunit, hc->memsize / 1024, hc->mempages,
-	       (u_int)hc->mem_start, (u_int)hc->mem_end, hc->numports);
-
-	src_init(hc);
-	sr_init_sca(hc);
-
-	/*
-	 * Now configure each port on the card.
-	 */
-	for (unit = 0; unit < hc->numports; sc++, unit++) {
-		sc->hc = hc;
-		sc->subunit = unit;
-		sc->unit = next_sc_unit;
-		next_sc_unit++;
-		sc->scachan = unit % NCHAN;
-
-		sr_init_rx_dmac(sc);
-		sr_init_tx_dmac(sc);
-		sr_init_msci(sc);
-
-		printf("sr%d: Adapter %d, port %d.\n",
-		       sc->unit, hc->cunit, sc->subunit);
-
-#ifndef NETGRAPH
-		ifp = &sc->ifsppp.pp_if;
-		ifp->if_softc = sc;
-		ifp->if_unit = sc->unit;
-		ifp->if_name = "sr";
-		ifp->if_mtu = PP_MTU;
-		ifp->if_flags = IFF_POINTOPOINT | IFF_MULTICAST;
-		ifp->if_ioctl = srioctl;
-		ifp->if_start = srstart;
-		ifp->if_watchdog = srwatchdog;
-
-		sc->ifsppp.pp_flags = PP_KEEPALIVE;
-		sppp_attach((struct ifnet *)&sc->ifsppp);
-		if_attach(ifp);
-
-		bpfattach(ifp, DLT_PPP, PPP_HEADER_LEN);
-#else	/* NETGRAPH */
-		/*
-		 * we have found a node, make sure our 'type' is availabe.
-		 */
-		if (ngsr_done_init == 0) ngsr_init(NULL);
-		if (ng_make_node_common(&typestruct, &sc->node) != 0)
-			return (0);
-		sprintf(sc->nodename, "%s%d", NG_SR_NODE_TYPE, sc->unit);
-		if (ng_name_node(sc->node, sc->nodename)) {
-			NG_NODE_UNREF(sc->node); /* make it go away again */
-			return (0);
-		}
-		NG_NODE_SET_PRIVATE(sc->node, sc);
-		callout_handle_init(&sc->handle);
-		sc->xmitq.ifq_maxlen = IFQ_MAXLEN;
-		sc->xmitq_hipri.ifq_maxlen = IFQ_MAXLEN;
-		mtx_init(&sc->xmitq.ifq_mtx, "sr_xmitq", MTX_DEF);
-		mtx_init(&sc->xmitq_hipri.ifq_mtx, "sr_xmitq_hipri", MTX_DEF);
-		sc->running = 0;
-#endif	/* NETGRAPH */
-	}
-
-	if (hc->mempages)
-		SRC_SET_OFF(hc->iobase);
-
-	return 1;
-}
-
-/*
- * N2 Interrupt Service Routine
- *
- * First figure out which SCA gave the interrupt.
- * Process it.
- * See if there is other interrupts pending.
- * Repeat until there no interrupts remain.
- */
-static void
-srintr(int unit)
-{
-	struct sr_hardc *hc;
-
-	hc = &sr_hardc[unit];
-	srintr_hc(hc);
-
-	return;
-}
-
-void
-srintr_hc(struct sr_hardc *hc)
-{
-	sca_regs *sca = hc->sca;	/* MSCI register tree */
-	u_char  isr0, isr1, isr2;	/* interrupt statii captured */
-
-#if BUGGY > 1
-	printf("sr: srintr_hc(hc=%08x)\n", hc);
-#endif
-
-	/*
-	 * Since multiple interfaces may share this interrupt, we must loop
-	 * until no interrupts are still pending service.
-	 */
-	while (1) {
-		/*
-		 * Read all three interrupt status registers from the N2
-		 * card...
-		 */
-		isr0 = SRC_GET8(hc->sca_base, sca->isr0);
-		isr1 = SRC_GET8(hc->sca_base, sca->isr1);
-		isr2 = SRC_GET8(hc->sca_base, sca->isr2);
-
-		/*
-		 * If all three registers returned 0, we've finished
-		 * processing interrupts from this device, so we can quit
-		 * this loop...
-		 */
-		if ((isr0 | isr1 | isr2) == 0)
-			break;
-
-#if BUGGY > 2
-		printf("src%d: srintr_hc isr0 %x, isr1 %x, isr2 %x\n",
-#ifndef NETGRAPH
-			unit, isr0, isr1, isr2);
-#else
-			hc->cunit, isr0, isr1, isr2);
-#endif /* NETGRAPH */
-#endif
-
-		/*
-		 * Now we can dispatch the interrupts. Since we don't expect
-		 * either MSCI or timer interrupts, we'll test for DMA
-		 * interrupts first...
-		 */
-		if (isr1)	/* DMA-initiated interrupt */
-			sr_dmac_intr(hc, isr1);
-
-		if (isr0)	/* serial part IRQ? */
-			sr_msci_intr(hc, isr0);
-
-		if (isr2)	/* timer-initiated interrupt */
-			sr_timer_intr(hc, isr2);
-	}
-}
-
-/*
- * This will only start the transmitter. It is assumed that the data
- * is already there.
- * It is normally called from srstart() or sr_dmac_intr().
- */
-static void
-sr_xmit(struct sr_softc *sc)
-{
-	u_short cda_value;	/* starting descriptor */
-	u_short eda_value;	/* ending descriptor */
-	struct sr_hardc *hc;
-#ifndef NETGRAPH
-	struct ifnet *ifp;	/* O/S Network Services */
-#endif /* NETGRAPH */
-	dmac_channel *dmac;	/* DMA channel registers */
-
-#if BUGGY > 0
-	printf("sr: sr_xmit( sc=%08x)\n", sc);
-#endif
-
-	hc = sc->hc;
-#ifndef NETGRAPH
-	ifp = &sc->ifsppp.pp_if;
-#endif /* NETGRAPH */
-	dmac = &hc->sca->dmac[DMAC_TXCH(sc->scachan)];
-
-	/*
-	 * Get the starting and ending addresses of the chain to be
-	 * transmitted and pass these on to the DMA engine on-chip.
-	 */
-	cda_value = sc->block[sc->txb_next_tx].txdesc + hc->mem_pstart;
-	cda_value &= 0x00ffff;
-	eda_value = sc->block[sc->txb_next_tx].txeda + hc->mem_pstart;
-	eda_value &= 0x00ffff;
-
-	SRC_PUT16(hc->sca_base, dmac->cda, cda_value);
-	SRC_PUT16(hc->sca_base, dmac->eda, eda_value);
-
-	/*
-	 * Now we'll let the DMA status register know about this change
-	 */
-	SRC_PUT8(hc->sca_base, dmac->dsr, SCA_DSR_DE);
-
-	sc->xmit_busy = 1;	/* mark transmitter busy */
-
-#if BUGGY > 2
-	printf("sr%d: XMIT  cda=%04x, eda=%4x, rcda=%08lx\n",
-	       sc->unit, cda_value, eda_value,
-	       sc->block[sc->txb_next_tx].txdesc + hc->mem_pstart);
-#endif
-
-	sc->txb_next_tx++;	/* update next transmit seq# */
-
-	if (sc->txb_next_tx == SR_TX_BLOCKS)	/* handle wrap... */
-		sc->txb_next_tx = 0;
-
-#ifndef NETGRAPH
-	/*
-	 * Finally, we'll set a timout (which will start srwatchdog())
-	 * within the O/S network services layer...
-	 */
-	ifp->if_timer = 2;	/* Value in seconds. */
-#else
-	/*
-	 * Don't time out for a while.
-	 */
-	sc->out_dog = DOG_HOLDOFF;	/* give ourself some breathing space*/
-#endif /* NETGRAPH */
-}
-
-/*
- * This function will be called from the upper level when a user add a
- * packet to be send, and from the interrupt handler after a finished
- * transmit.
- *
- * NOTE: it should run at spl_imp().
- *
- * This function only place the data in the oncard buffers. It does not
- * start the transmition. sr_xmit() does that.
- *
- * Transmitter idle state is indicated by the IFF_OACTIVE flag.
- * The function that clears that should ensure that the transmitter
- * and its DMA is in a "good" idle state.
- */
-#ifndef NETGRAPH
-static void
-srstart(struct ifnet *ifp)
-{
-	struct sr_softc *sc;	/* channel control structure */
-#else
-static void
-srstart(struct sr_softc *sc)
-{
-#endif /* NETGRAPH */
-	struct sr_hardc *hc;	/* card control/config block */
-	int len;		/* total length of a packet */
-	int pkts;		/* packets placed in DPRAM */
-	int tlen;		/* working length of pkt */
-	u_int i;
-	struct mbuf *mtx;	/* message buffer from O/S */
-	u_char *txdata;		/* buffer address in DPRAM */
-	sca_descriptor *txdesc;	/* working descriptor pointr */
-	struct buf_block *blkp;
-
-#ifndef NETGRAPH
-#if BUGGY > 0
-	printf("sr: srstart( ifp=%08x)\n", ifp);
-#endif
-	sc = ifp->if_softc;
-	if ((ifp->if_flags & IFF_RUNNING) == 0)
-		return;
-#endif /* NETGRAPH */
-	hc = sc->hc;
-	/*
-	 * It is OK to set the memory window outside the loop because all tx
-	 * buffers and descriptors are assumed to be in the same 16K window.
-	 */
-	if (hc->mempages) {
-		SRC_SET_ON(hc->iobase);
-		SRC_SET_MEM(hc->iobase, sc->block[0].txdesc);
-	}
-
-	/*
-	 * Loop to place packets into DPRAM.
-	 *
-	 * We stay in this loop until there is nothing in
-	 * the TX queue left or the tx buffers are full.
-	 */
-top_srstart:
-
-	/*
-	 * See if we have space for more packets.
-	 */
-	if (sc->txb_inuse == SR_TX_BLOCKS) {	/* out of space? */
-#ifndef NETGRAPH
-		ifp->if_flags |= IFF_OACTIVE;	/* yes, mark active */
-#else
-		/*ifp->if_flags |= IFF_OACTIVE;*/	/* yes, mark active */
-#endif /* NETGRAPH */
-
-		if (hc->mempages)
-			SRC_SET_OFF(hc->iobase);
-
-#if BUGGY > 9
-		printf("sr%d.srstart: sc->txb_inuse=%d; DPRAM full...\n",
-		       sc->unit, sc->txb_inuse);
-#endif
-		return;
-	}
-	/*
-	 * OK, the card can take more traffic.  Let's see if there's any
-	 * pending from the system...
-	 *
-	 * NOTE:
-	 * The architecture of the networking interface doesn't
-	 * actually call us like 'write()', providing an address.  We get
-	 * started, a lot like a disk strategy routine, and we actually call
-	 * back out to the system to get traffic to send...
-	 *
-	 * NOTE:
-	 * If we were gonna run through another layer, we would use a
-	 * dispatch table to select the service we're getting a packet
-	 * from...
-	 */
-#ifndef NETGRAPH
-	mtx = sppp_dequeue(ifp);
-#else /* NETGRAPH */
-	IF_DEQUEUE(&sc->xmitq_hipri, mtx);
-	if (mtx == NULL) {
-		IF_DEQUEUE(&sc->xmitq, mtx);
-	}
-#endif /* NETGRAPH */
-	if (!mtx) {
-		if (hc->mempages)
-			SRC_SET_OFF(hc->iobase);
-		return;
-	}
-	/*
-	 * OK, we got a packet from the network services of the O/S. Now we
-	 * can move it into the DPRAM (under control of the descriptors) and
-	 * fire it off...
-	 */
-	pkts = 0;
-	i = 0;			/* counts # of granules used */
-
-	blkp = &sc->block[sc->txb_new];	/* address of free granule */
-	txdesc = (sca_descriptor *)
-	    (hc->mem_start + (blkp->txdesc & hc->winmsk));
-
-	txdata = (u_char *)(hc->mem_start
-			    + (blkp->txstart & hc->winmsk));
-
-	/*
-	 * Now we'll try to install as many packets as possible into the
-	 * card's DP RAM buffers.
-	 */
-	for (;;) {		/* perform actual copy of packet */
-		len = mtx->m_pkthdr.len;	/* length of message */
-
-#if BUGGY > 1
-		printf("sr%d.srstart: mbuf @ %08lx, %d bytes\n",
-			   sc->unit, mtx, len);
-#endif
-
-#ifndef NETGRAPH
-		if (ifp->if_bpf)
-			bpf_mtap(ifp, mtx);
-#else	/* NETGRAPH */
-		sc->outbytes += len;
-#endif	/* NETGRAPH */
-
-		/*
-		 * We can perform a straight copy because the tranmit
-		 * buffers won't wrap.
-		 */
-		m_copydata(mtx, 0, len, txdata);
-
-		/*
-		 * Now we know how big the message is gonna be.  We must now
-		 * construct the descriptors to drive this message out...
-		 */
-		tlen = len;
-		while (tlen > SR_BUF_SIZ) {	/* loop for full granules */
-			txdesc->stat = 0;	/* reset bits */
-			txdesc->len = SR_BUF_SIZ;	/* size of granule */
-			tlen -= SR_BUF_SIZ;
-
-			txdesc++;	/* move to next dscr */
-			txdata += SR_BUF_SIZ;	/* adjust data addr */
-			i++;
-		}
-
-		/*
-		 * This section handles the setting of the final piece of a
-		 * message.
-		 */
-		txdesc->stat = SCA_DESC_EOM;
-		txdesc->len = tlen;
-		pkts++;
-
-		/*
-		 * prepare for subsequent packets (if any)
-		 */
-		txdesc++;
-		txdata += SR_BUF_SIZ;	/* next mem granule */
-		i++;		/* count of granules */
-
-		/*
-		 * OK, we've now placed the message into the DPRAM where it
-		 * can be transmitted.  We'll now release the message memory
-		 * and update the statistics...
-		 */
-		m_freem(mtx);
-#ifndef NETGRAPH
-		++sc->ifsppp.pp_if.if_opackets;
-#else	/* NETGRAPH */
-		sc->opackets++;
-#endif /* NETGRAPH */
-
-		/*
-		 * Check if we have space for another packet. XXX This is
-		 * hardcoded.  A packet can't be larger than 3 buffers (3 x
-		 * 512).
-		 */
-		if ((i + 3) >= blkp->txmax) {	/* enough remains? */
-#if BUGGY > 9
-			printf("sr%d.srstart: i=%d (%d pkts); card full.\n",
-			       sc->unit, i, pkts);
-#endif
-			break;
-		}
-		/*
-		 * We'll pull the next message to be sent (if any)
-		 */
-#ifndef NETGRAPH
-		mtx = sppp_dequeue(ifp);
-#else /* NETGRAPH */
-		IF_DEQUEUE(&sc->xmitq_hipri, mtx);
-		if (mtx == NULL) {
-			IF_DEQUEUE(&sc->xmitq, mtx);
-		}
-#endif /* NETGRAPH */
-		if (!mtx) {	/* no message?  We're done! */
-#if BUGGY > 9
-			printf("sr%d.srstart: pending=0, pkts=%d\n",
-			       sc->unit, pkts);
-#endif
-			break;
-		}
-	}
-
-	blkp->txtail = i;	/* record next free granule */
-
-	/*
-	 * Mark the last descriptor, so that the SCA know where to stop.
-	 */
-	txdesc--;		/* back up to last descriptor in list */
-	txdesc->stat |= SCA_DESC_EOT;	/* mark as end of list */
-
-	/*
-	 * Now we'll reset the transmit granule's descriptor address so we
-	 * can record this in the structure and fire it off w/ the DMA
-	 * processor of the serial chip...
-	 */
-	txdesc = (sca_descriptor *)blkp->txdesc;
-	blkp->txeda = (u_short)((u_int)&txdesc[i]);
-
-	sc->txb_inuse++;	/* update inuse status */
-	sc->txb_new++;		/* new traffic wuz added */
-
-	if (sc->txb_new == SR_TX_BLOCKS)
-		sc->txb_new = 0;
-
-	/*
-	 * If the tranmitter wasn't marked as "busy" we will force it to be
-	 * started...
-	 */
-	if (sc->xmit_busy == 0) {
-		sr_xmit(sc);
-#if BUGGY > 9
-		printf("sr%d.srstart: called sr_xmit()\n", sc->unit);
-#endif
-	}
-	goto top_srstart;
-}
-
-#ifndef NETGRAPH
-/*
- * Handle ioctl's at the device level, though we *will* call up
- * a layer...
- */
-#if BUGGY > 2
-static int bug_splats[] = {0, 0, 0, 0, 0, 0, 0, 0};
-#endif
-
-static int
-srioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
-{
-	int s, error, was_up, should_be_up;
-	struct sr_softc *sc = ifp->if_softc;
-
-#if BUGGY > 0
-	printf("sr%d: srioctl(ifp=%08x, cmd=%08x, data=%08x)\n",
-	       ifp->if_unit, ifp, cmd, data);
-#endif
-
-	was_up = ifp->if_flags & IFF_RUNNING;
-
-	error = sppp_ioctl(ifp, cmd, data);
-
-#if BUGGY > 1
-	printf("sr%d: ioctl: ifsppp.pp_flags = %08x, if_flags %08x.\n",
-	      ifp->if_unit, ((struct sppp *)ifp)->pp_flags, ifp->if_flags);
-#endif
-
-	if (error)
-		return error;
-
-	if ((cmd != SIOCSIFFLAGS) && (cmd != SIOCSIFADDR)) {
-#if BUGGY > 2
-		if (bug_splats[sc->unit]++ < 2) {
-			printf("sr(%d).if_addrlist = %08x\n",
-			       sc->unit, ifp->if_addrlist);
-			printf("sr(%d).if_bpf = %08x\n",
-			       sc->unit, ifp->if_bpf);
-			printf("sr(%d).if_init = %08x\n",
-			       sc->unit, ifp->if_init);
-			printf("sr(%d).if_output = %08x\n",
-			       sc->unit, ifp->if_output);
-			printf("sr(%d).if_start = %08x\n",
-			       sc->unit, ifp->if_start);
-			printf("sr(%d).if_done = %08x\n",
-			       sc->unit, ifp->if_done);
-			printf("sr(%d).if_ioctl = %08x\n",
-			       sc->unit, ifp->if_ioctl);
-			printf("sr(%d).if_reset = %08x\n",
-			       sc->unit, ifp->if_reset);
-			printf("sr(%d).if_watchdog = %08x\n",
-			       sc->unit, ifp->if_watchdog);
-		}
-#endif
-		return 0;
-	}
-
-	s = splimp();
-	should_be_up = ifp->if_flags & IFF_RUNNING;
-
-	if (!was_up && should_be_up) {
-		/*
-		 * Interface should be up -- start it.
-		 */
-		sr_up(sc);
-		srstart(ifp);
-
-		/*
-		 * XXX Clear the IFF_UP flag so that the link will only go
-		 * up after sppp lcp and ipcp negotiation.
-		 */
-		/* ifp->if_flags &= ~IFF_UP; */
-	} else if (was_up && !should_be_up) {
-		/*
-		 * Interface should be down -- stop it.
-		 */
-		sr_down(sc);
-		sppp_flush(ifp);
-	}
-	splx(s);
-	return 0;
-}
-#endif /* NETGRAPH */
-
-/*
- * This is to catch lost tx interrupts.
- */
-static void
-#ifndef NETGRAPH
-srwatchdog(struct ifnet *ifp)
-#else
-srwatchdog(struct sr_softc *sc)
-#endif /* NETGRAPH */
-{
-	int     got_st0, got_st1, got_st3, got_dsr;
-#ifndef NETGRAPH
-	struct sr_softc *sc = ifp->if_softc;
-#endif /* NETGRAPH */
-	struct sr_hardc *hc = sc->hc;
-	msci_channel *msci = &hc->sca->msci[sc->scachan];
-	dmac_channel *dmac = &sc->hc->sca->dmac[sc->scachan];
-
-#if BUGGY > 0
-#ifndef NETGRAPH
-	printf("srwatchdog(unit=%d)\n", unit);
-#else
-	printf("srwatchdog(unit=%d)\n", sc->unit);
-#endif /* NETGRAPH */
-#endif
-
-#ifndef NETGRAPH
-	if (!(ifp->if_flags & IFF_RUNNING))
-		return;
-
-	ifp->if_oerrors++;	/* update output error count */
-#else	/* NETGRAPH */
-	sc->oerrors++;	/* update output error count */
-#endif /* NETGRAPH */
-
-	got_st0 = SRC_GET8(hc->sca_base, msci->st0);
-	got_st1 = SRC_GET8(hc->sca_base, msci->st1);
-	got_st3 = SRC_GET8(hc->sca_base, msci->st3);
-	got_dsr = SRC_GET8(hc->sca_base, dmac->dsr);
-
-#ifndef NETGRAPH
-#if	0
-	if (ifp->if_flags & IFF_DEBUG)
-#endif
-		printf("sr%d: transmit failed, "
-#else	/* NETGRAPH */
-	printf("sr%d: transmit failed, "
-#endif /* NETGRAPH */
-		       "ST0 %02x, ST1 %02x, ST3 %02x, DSR %02x.\n",
-		       sc->unit,
-		       got_st0, got_st1, got_st3, got_dsr);
-
-	if (SRC_GET8(hc->sca_base, msci->st1) & SCA_ST1_UDRN) {
-		SRC_PUT8(hc->sca_base, msci->cmd, SCA_CMD_TXABORT);
-		SRC_PUT8(hc->sca_base, msci->cmd, SCA_CMD_TXENABLE);
-		SRC_PUT8(hc->sca_base, msci->st1, SCA_ST1_UDRN);
-	}
-	sc->xmit_busy = 0;
-#ifndef NETGRAPH
-	ifp->if_flags &= ~IFF_OACTIVE;
-#else
-	/*ifp->if_flags &= ~IFF_OACTIVE; */
-#endif /* NETGRAPH */
-
-	if (sc->txb_inuse && --sc->txb_inuse)
-		sr_xmit(sc);
-
-#ifndef NETGRAPH
-	srstart(ifp);	/* restart transmitter */
-#else
-	srstart(sc);	/* restart transmitter */
-#endif /* NETGRAPH */
-}
-
-static void
-sr_up(struct sr_softc *sc)
-{
-	u_int *fecrp;
-	struct sr_hardc *hc = sc->hc;
-	sca_regs *sca = hc->sca;
-	msci_channel *msci = &sca->msci[sc->scachan];
-
-#if BUGGY > 0
-	printf("sr_up(sc=%08x)\n", sc);
-#endif
-
-	/*
-	 * Enable transmitter and receiver. Raise DTR and RTS. Enable
-	 * interrupts.
-	 *
-	 * XXX What about using AUTO mode in msci->md0 ???
-	 */
-	SRC_PUT8(hc->sca_base, msci->ctl,
-		 SRC_GET8(hc->sca_base, msci->ctl) & ~SCA_CTL_RTS);
-
-	if (sc->scachan == 0)
-		switch (hc->cardtype) {
-		case SR_CRD_N2:
-			outb(hc->iobase + SR_MCR,
-			     (inb(hc->iobase + SR_MCR) & ~SR_MCR_DTR0));
-			break;
-		case SR_CRD_N2PCI:
-			fecrp = (u_int *)(hc->sca_base + SR_FECR);
-			*fecrp &= ~SR_FECR_DTR0;
-			break;
-		}
-	else
-		switch (hc->cardtype) {
-		case SR_CRD_N2:
-			outb(hc->iobase + SR_MCR,
-			     (inb(hc->iobase + SR_MCR) & ~SR_MCR_DTR1));
-			break;
-		case SR_CRD_N2PCI:
-			fecrp = (u_int *)(hc->sca_base + SR_FECR);
-			*fecrp &= ~SR_FECR_DTR1;
-			break;
-		}
-
-	if (sc->scachan == 0) {
-		SRC_PUT8(hc->sca_base, sca->ier0,
-			 SRC_GET8(hc->sca_base, sca->ier0) | 0x000F);
-		SRC_PUT8(hc->sca_base, sca->ier1,
-			 SRC_GET8(hc->sca_base, sca->ier1) | 0x000F);
-	} else {
-		SRC_PUT8(hc->sca_base, sca->ier0,
-			 SRC_GET8(hc->sca_base, sca->ier0) | 0x00F0);
-		SRC_PUT8(hc->sca_base, sca->ier1,
-			 SRC_GET8(hc->sca_base, sca->ier1) | 0x00F0);
-	}
-
-	SRC_PUT8(hc->sca_base, msci->cmd, SCA_CMD_RXENABLE);
-	inb(hc->iobase);	/* XXX slow it down a bit. */
-	SRC_PUT8(hc->sca_base, msci->cmd, SCA_CMD_TXENABLE);
-
-#ifndef NETGRAPH
-#ifdef USE_MODEMCK
-	if (sr_watcher == 0)
-		sr_modemck(NULL);
-#endif
-#else	/* NETGRAPH */
-	untimeout(ngsr_watchdog_frame, sc, sc->handle);
-	sc->handle = timeout(ngsr_watchdog_frame, sc, hz);
-	sc->running = 1;
-#endif /* NETGRAPH */
-}
-
-static void
-sr_down(struct sr_softc *sc)
-{
-	u_int *fecrp;
-	struct sr_hardc *hc = sc->hc;
-	sca_regs *sca = hc->sca;
-	msci_channel *msci = &sca->msci[sc->scachan];
-
-#if BUGGY > 0
-	printf("sr_down(sc=%08x)\n", sc);
-#endif
-#ifdef NETGRAPH
-	untimeout(ngsr_watchdog_frame, sc, sc->handle);
-	sc->running = 0;
-#endif /* NETGRAPH */
-
-	/*
-	 * Disable transmitter and receiver. Lower DTR and RTS. Disable
-	 * interrupts.
-	 */
-	SRC_PUT8(hc->sca_base, msci->cmd, SCA_CMD_RXDISABLE);
-	inb(hc->iobase);	/* XXX slow it down a bit. */
-	SRC_PUT8(hc->sca_base, msci->cmd, SCA_CMD_TXDISABLE);
-
-	SRC_PUT8(hc->sca_base, msci->ctl,
-		 SRC_GET8(hc->sca_base, msci->ctl) | SCA_CTL_RTS);
-
-	if (sc->scachan == 0)
-		switch (hc->cardtype) {
-		case SR_CRD_N2:
-			outb(hc->iobase + SR_MCR,
-			     (inb(hc->iobase + SR_MCR) | SR_MCR_DTR0));
-			break;
-		case SR_CRD_N2PCI:
-			fecrp = (u_int *)(hc->sca_base + SR_FECR);
-			*fecrp |= SR_FECR_DTR0;
-			break;
-		}
-	else
-		switch (hc->cardtype) {
-		case SR_CRD_N2:
-			outb(hc->iobase + SR_MCR,
-			     (inb(hc->iobase + SR_MCR) | SR_MCR_DTR1));
-			break;
-		case SR_CRD_N2PCI:
-			fecrp = (u_int *)(hc->sca_base + SR_FECR);
-			*fecrp |= SR_FECR_DTR1;
-			break;
-		}
-
-	if (sc->scachan == 0) {
-		SRC_PUT8(hc->sca_base, sca->ier0,
-			 SRC_GET8(hc->sca_base, sca->ier0) & ~0x0F);
-		SRC_PUT8(hc->sca_base, sca->ier1,
-			 SRC_GET8(hc->sca_base, sca->ier1) & ~0x0F);
-	} else {
-		SRC_PUT8(hc->sca_base, sca->ier0,
-			 SRC_GET8(hc->sca_base, sca->ier0) & ~0xF0);
-		SRC_PUT8(hc->sca_base, sca->ier1,
-			 SRC_GET8(hc->sca_base, sca->ier1) & ~0xF0);
-	}
-}
-
-/*
- * Initialize the card, allocate memory for the sr_softc structures
- * and fill in the pointers.
- */
-static void
-src_init(struct sr_hardc *hc)
-{
-	struct sr_softc *sc = hc->sc;
-	int x;
-	u_int chanmem;
-	u_int bufmem;
-	u_int next;
-	u_int descneeded;
-
-#if BUGGY > 0
-	printf("src_init(hc=%08x)\n", hc);
-#endif
-
-	chanmem = hc->memsize / hc->numports;
-	next = 0;
-
-	for (x = 0; x < hc->numports; x++, sc++) {
-		int blk;
-
-		for (blk = 0; blk < SR_TX_BLOCKS; blk++) {
-			sc->block[blk].txdesc = next;
-			bufmem = (16 * 1024) / SR_TX_BLOCKS;
-			descneeded = bufmem / SR_BUF_SIZ;
-
-			sc->block[blk].txstart = sc->block[blk].txdesc
-			    + ((((descneeded * sizeof(sca_descriptor))
-				 / SR_BUF_SIZ) + 1)
-			       * SR_BUF_SIZ);
-
-			sc->block[blk].txend = next + bufmem;
-			sc->block[blk].txmax =
-			    (sc->block[blk].txend - sc->block[blk].txstart)
-			    / SR_BUF_SIZ;
-			next += bufmem;
-
-#if BUGGY > 2
-			printf("sr%d: blk %d: txdesc %08x, txstart %08x\n",
-			       sc->unit, blk,
-			       sc->block[blk].txdesc, sc->block[blk].txstart);
-#endif
-		}
-
-		sc->rxdesc = next;
-		bufmem = chanmem - (bufmem * SR_TX_BLOCKS);
-		descneeded = bufmem / SR_BUF_SIZ;
-		sc->rxstart = sc->rxdesc +
-		    ((((descneeded * sizeof(sca_descriptor)) /
-		       SR_BUF_SIZ) + 1) * SR_BUF_SIZ);
-		sc->rxend = next + bufmem;
-		sc->rxmax = (sc->rxend - sc->rxstart) / SR_BUF_SIZ;
-		next += bufmem;
-	}
-}
-
-/*
- * The things done here are channel independent.
- *
- * Configure the sca waitstates.
- * Configure the global interrupt registers.
- * Enable master dma enable.
- */
-static void
-sr_init_sca(struct sr_hardc *hc)
-{
-	sca_regs *sca = hc->sca;
-
-#if BUGGY > 0
-	printf("sr_init_sca(hc=%08x)\n", hc);
-#endif
-
-	/*
-	 * Do the wait registers. Set everything to 0 wait states.
-	 */
-	SRC_PUT8(hc->sca_base, sca->pabr0, 0);
-	SRC_PUT8(hc->sca_base, sca->pabr1, 0);
-	SRC_PUT8(hc->sca_base, sca->wcrl, 0);
-	SRC_PUT8(hc->sca_base, sca->wcrm, 0);
-	SRC_PUT8(hc->sca_base, sca->wcrh, 0);
-
-	/*
-	 * Configure the interrupt registers. Most are cleared until the
-	 * interface is configured.
-	 */
-	SRC_PUT8(hc->sca_base, sca->ier0, 0x00);	/* MSCI interrupts. */
-	SRC_PUT8(hc->sca_base, sca->ier1, 0x00);	/* DMAC interrupts */
-	SRC_PUT8(hc->sca_base, sca->ier2, 0x00);	/* TIMER interrupts. */
-	SRC_PUT8(hc->sca_base, sca->itcr, 0x00);	/* Use ivr and no intr
-							 * ack */
-	SRC_PUT8(hc->sca_base, sca->ivr, 0x40);	/* Interrupt vector. */
-	SRC_PUT8(hc->sca_base, sca->imvr, 0x40);
-
-	/*
-	 * Configure the timers. XXX Later
-	 */
-
-	/*
-	 * Set the DMA channel priority to rotate between all four channels.
-	 *
-	 * Enable all dma channels.
-	 */
-	SRC_PUT8(hc->sca_base, sca->pcr, SCA_PCR_PR2);
-	SRC_PUT8(hc->sca_base, sca->dmer, SCA_DMER_EN);
-}
-
-/*
- * Configure the msci
- *
- * NOTE: The serial port configuration is hardcoded at the moment.
- */
-static void
-sr_init_msci(struct sr_softc *sc)
-{
-	int portndx;		/* on-board port number */
-	u_int mcr_v;		/* contents of modem control */
-	u_int *fecrp;		/* pointer for PCI's MCR i/o */
-	struct sr_hardc *hc = sc->hc;
-	msci_channel *msci = &hc->sca->msci[sc->scachan];
-#ifdef N2_TEST_SPEED
-	int br_v;		/* contents for BR divisor */
-	int etcndx;		/* index into ETC table */
-	int fifo_v, gotspeed;	/* final tabled speed found */
-	int tmc_v;		/* timer control register */
-	int wanted;		/* speed (bitrate) wanted... */
-	struct rate_line *rtp;
-#endif
-
-	portndx = sc->scachan;
-
-#if BUGGY > 0
-	printf("sr: sr_init_msci( sc=%08x)\n", sc);
-#endif
-
-	SRC_PUT8(hc->sca_base, msci->cmd, SCA_CMD_RESET);
-	SRC_PUT8(hc->sca_base, msci->md0, SCA_MD0_CRC_1 |
-		 SCA_MD0_CRC_CCITT |
-		 SCA_MD0_CRC_ENABLE |
-		 SCA_MD0_MODE_HDLC);
-	SRC_PUT8(hc->sca_base, msci->md1, SCA_MD1_NOADDRCHK);
-	SRC_PUT8(hc->sca_base, msci->md2, SCA_MD2_DUPLEX | SCA_MD2_NRZ);
-
-	/*
-	 * According to the manual I should give a reset after changing the
-	 * mode registers.
-	 */
-	SRC_PUT8(hc->sca_base, msci->cmd, SCA_CMD_RXRESET);
-	SRC_PUT8(hc->sca_base, msci->ctl, SCA_CTL_IDLPAT |
-		 SCA_CTL_UDRNC |
-		 SCA_CTL_RTS);
-
-	/*
-	 * XXX Later we will have to support different clock settings.
-	 */
-	switch (sc->clk_cfg) {
-	default:
-#if BUGGY > 0
-		printf("sr%: clk_cfg=%08x, selected default clock.\n",
-		       portndx, sc->clk_cfg);
-#endif
-		/* FALLTHROUGH */
-	case SR_FLAGS_EXT_CLK:
-		/*
-		 * For now all interfaces are programmed to use the RX clock
-		 * for the TX clock.
-		 */
-
-#if BUGGY > 0
-		printf("sr%d: External Clock Selected.\n", portndx);
-#endif
-
-		SRC_PUT8(hc->sca_base, msci->rxs, 0);
-		SRC_PUT8(hc->sca_base, msci->txs, 0);
-		break;
-
-	case SR_FLAGS_EXT_SEP_CLK:
-#if BUGGY > 0
-		printf("sr%d: Split Clocking Selected.\n", portndx);
-#endif
-
-#if	1
-		SRC_PUT8(hc->sca_base, msci->rxs, 0);
-		SRC_PUT8(hc->sca_base, msci->txs, 0);
-#else
-		SRC_PUT8(hc->sca_base, msci->rxs,
-			 SCA_RXS_CLK_RXC0 | SCA_RXS_DIV1);
-
-		/*
-		 * We need to configure the internal bit clock for the
-		 * transmitter's channel...
-		 */
-		SRC_PUT8(hc->sca_base, msci->txs,
-			 SCA_TXS_CLK_RX | SCA_TXS_DIV1);
-#endif
-		break;
-
-	case SR_FLAGS_INT_CLK:
-#if BUGGY > 0
-		printf("sr%d: Internal Clocking selected.\n", portndx);
-#endif
-
-		/*
-		 * XXX I do need some code to set the baud rate here!
-		 */
-#ifdef N2_TEST_SPEED
-		switch (hc->cardtype) {
-		case SR_CRD_N2PCI:
-			fecrp = (u_int *)(hc->sca_base + SR_FECR);
-			mcr_v = *fecrp;
-			etcndx = 2;
-			break;
-		case SR_CRD_N2:
-		default:
-			mcr_v = inb(hc->iobase + SR_MCR);
-			etcndx = 0;
-		}
-
-		fifo_v = 0x10;	/* stolen from Linux version */
-
-		/*
-		 * search for appropriate speed in table, don't calc it:
-		 */
-		wanted = sr_test_speed[portndx];
-		rtp = &n2_rates[0];	/* point to first table item */
-
-		while ((rtp->target > 0)	/* search table for speed */
-		       &&(rtp->target != wanted))
-			rtp++;
-
-		/*
-		 * We've searched the table for a matching speed.  If we've
-		 * found the correct rate line, we'll get the pre-calc'd
-		 * values for the TMC and baud rate divisor for subsequent
-		 * use...
-		 */
-		if (rtp->target > 0) {	/* use table-provided values */
-			gotspeed = wanted;
-			tmc_v = rtp->tmc_reg;
-			br_v = rtp->br_reg;
-		} else {	/* otherwise assume 1MBit comm rate */
-			gotspeed = 10000;
-			tmc_v = 5;
-			br_v = 1;
-		}
-
-		/*
-		 * Now we mask in the enable clock output for the MCR:
-		 */
-		mcr_v |= etc0vals[etcndx + portndx];
-
-		/*
-		 * Now we'll program the registers with these speed- related
-		 * contents...
-		 */
-		SRC_PUT8(hc->sca_base, msci->tmc, tmc_v);
-		SRC_PUT8(hc->sca_base, msci->trc0, fifo_v);
-		SRC_PUT8(hc->sca_base, msci->rxs, SCA_RXS_CLK_INT + br_v);
-		SRC_PUT8(hc->sca_base, msci->txs, SCA_TXS_CLK_INT + br_v);
-
-		switch (hc->cardtype) {
-		case SR_CRD_N2PCI:
-			*fecrp = mcr_v;
-			break;
-		case SR_CRD_N2:
-		default:
-			outb(hc->iobase + SR_MCR, mcr_v);
-		}
-
-#if BUGGY > 0
-		if (wanted != gotspeed)
-			printf("sr%d: Speed wanted=%d, found=%d\n",
-			       wanted, gotspeed);
-
-		printf("sr%d: Internal Clock %dx100 BPS, tmc=%d, div=%d\n",
-		       portndx, gotspeed, tmc_v, br_v);
-#endif
-#else
-		SRC_PUT8(hc->sca_base, msci->rxs,
-			 SCA_RXS_CLK_INT | SCA_RXS_DIV1);
-		SRC_PUT8(hc->sca_base, msci->txs,
-			 SCA_TXS_CLK_INT | SCA_TXS_DIV1);
-
-		SRC_PUT8(hc->sca_base, msci->tmc, 5);
-
-		if (portndx == 0)
-			switch (hc->cardtype) {
-			case SR_CRD_N2PCI:
-				fecrp = (u_int *)(hc->sca_base + SR_FECR);
-				*fecrp |= SR_FECR_ETC0;
-				break;
-			case SR_CRD_N2:
-			default:
-				mcr_v = inb(hc->iobase + SR_MCR);
-				mcr_v |= SR_MCR_ETC0;
-				outb(hc->iobase + SR_MCR, mcr_v);
-			}
-		else
-			switch (hc->cardtype) {
-			case SR_CRD_N2:
-				mcr_v = inb(hc->iobase + SR_MCR);
-				mcr_v |= SR_MCR_ETC1;
-				outb(hc->iobase + SR_MCR, mcr_v);
-				break;
-			case SR_CRD_N2PCI:
-				fecrp = (u_int *)(hc->sca_base + SR_FECR);
-				*fecrp |= SR_FECR_ETC1;
-				break;
-			}
-#endif
-	}
-
-	/*
-	 * XXX Disable all interrupts for now. I think if you are using the
-	 * dmac you don't use these interrupts.
-	 */
-	SRC_PUT8(hc->sca_base, msci->ie0, 0);
-	SRC_PUT8(hc->sca_base, msci->ie1, 0x0C);
-	SRC_PUT8(hc->sca_base, msci->ie2, 0);
-	SRC_PUT8(hc->sca_base, msci->fie, 0);
-
-	SRC_PUT8(hc->sca_base, msci->sa0, 0);
-	SRC_PUT8(hc->sca_base, msci->sa1, 0);
-
-	SRC_PUT8(hc->sca_base, msci->idl, 0x7E);	/* set flags value */
-
-	SRC_PUT8(hc->sca_base, msci->rrc, 0x0E);
-	SRC_PUT8(hc->sca_base, msci->trc0, 0x10);
-	SRC_PUT8(hc->sca_base, msci->trc1, 0x1F);
-}
-
-/*
- * Configure the rx dma controller.
- */
-static void
-sr_init_rx_dmac(struct sr_softc *sc)
-{
-	struct sr_hardc *hc;
-	dmac_channel *dmac;
-	sca_descriptor *rxd;
-	u_int cda_v, sarb_v, rxbuf, rxda, rxda_d;
-
-#if BUGGY > 0
-	printf("sr_init_rx_dmac(sc=%08x)\n", sc);
-#endif
-
-	hc = sc->hc;
-	dmac = &hc->sca->dmac[DMAC_RXCH(sc->scachan)];
-
-	if (hc->mempages)
-		SRC_SET_MEM(hc->iobase, sc->rxdesc);
-
-	/*
-	 * This phase initializes the contents of the descriptor table
-	 * needed to construct a circular buffer...
-	 */
-	rxd = (sca_descriptor *)(hc->mem_start + (sc->rxdesc & hc->winmsk));
-	rxda_d = (u_int) hc->mem_start - (sc->rxdesc & ~hc->winmsk);
-
-	for (rxbuf = sc->rxstart;
-	     rxbuf < sc->rxend;
-	     rxbuf += SR_BUF_SIZ, rxd++) {
-		/*
-		 * construct the circular chain...
-		 */
-		rxda = (u_int) & rxd[1] - rxda_d + hc->mem_pstart;
-		rxd->cp = (u_short)(rxda & 0xffff);
-
-		/*
-		 * set the on-card buffer address...
-		 */
-		rxd->bp = (u_short)((rxbuf + hc->mem_pstart) & 0xffff);
-		rxd->bpb = (u_char)(((rxbuf + hc->mem_pstart) >> 16) & 0xff);
-
-		rxd->len = 0;	/* bytes resident w/in granule */
-		rxd->stat = 0xff;	/* The sca write here when finished */
-	}
-
-	/*
-	 * heal the chain so that the last entry points to the first...
-	 */
-	rxd--;
-	rxd->cp = (u_short)((sc->rxdesc + hc->mem_pstart) & 0xffff);
-
-	/*
-	 * reset the reception handler's index...
-	 */
-	sc->rxhind = 0;
-
-	/*
-	 * We'll now configure the receiver's DMA logic...
-	 */
-	SRC_PUT8(hc->sca_base, dmac->dsr, 0);	/* Disable DMA transfer */
-	SRC_PUT8(hc->sca_base, dmac->dcr, SCA_DCR_ABRT);
-
-	/* XXX maybe also SCA_DMR_CNTE */
-	SRC_PUT8(hc->sca_base, dmac->dmr, SCA_DMR_TMOD | SCA_DMR_NF);
-	SRC_PUT16(hc->sca_base, dmac->bfl, SR_BUF_SIZ);
-
-	cda_v = (u_short)((sc->rxdesc + hc->mem_pstart) & 0xffff);
-	sarb_v = (u_char)(((sc->rxdesc + hc->mem_pstart) >> 16) & 0xff);
-
-	SRC_PUT16(hc->sca_base, dmac->cda, cda_v);
-	SRC_PUT8(hc->sca_base, dmac->sarb, sarb_v);
-
-	rxd = (sca_descriptor *)sc->rxstart;
-
-	SRC_PUT16(hc->sca_base, dmac->eda,
-		  (u_short)((u_int) & rxd[sc->rxmax - 1] & 0xffff));
-
-	SRC_PUT8(hc->sca_base, dmac->dir, 0xF0);
-
-
-	SRC_PUT8(hc->sca_base, dmac->dsr, SCA_DSR_DE);	/* Enable DMA */
-}
-
-/*
- * Configure the TX DMA descriptors.
- * Initialize the needed values and chain the descriptors.
- */
-static void
-sr_init_tx_dmac(struct sr_softc *sc)
-{
-	int blk;
-	u_int txbuf, txda, txda_d;
-	struct sr_hardc *hc;
-	sca_descriptor *txd;
-	dmac_channel *dmac;
-	struct buf_block *blkp;
-	u_int x;
-	u_int sarb_v;
-
-#if BUGGY > 0
-	printf("sr_init_tx_dmac(sc=%08x)\n", sc);
-#endif
-
-	hc = sc->hc;
-	dmac = &hc->sca->dmac[DMAC_TXCH(sc->scachan)];
-
-	if (hc->mempages)
-		SRC_SET_MEM(hc->iobase, sc->block[0].txdesc);
-
-	/*
-	 * Initialize the array of descriptors for transmission
-	 */
-	for (blk = 0; blk < SR_TX_BLOCKS; blk++) {
-		blkp = &sc->block[blk];
-		txd = (sca_descriptor *)(hc->mem_start
-					 + (blkp->txdesc & hc->winmsk));
-		txda_d = (u_int) hc->mem_start
-		    - (blkp->txdesc & ~hc->winmsk);
-
-		x = 0;
-		txbuf = blkp->txstart;
-		for (; txbuf < blkp->txend; txbuf += SR_BUF_SIZ, txd++) {
-			txda = (u_int) & txd[1] - txda_d + hc->mem_pstart;
-			txd->cp = (u_short)(txda & 0xffff);
-
-			txd->bp = (u_short)((txbuf + hc->mem_pstart)
-					    & 0xffff);
-			txd->bpb = (u_char)(((txbuf + hc->mem_pstart) >> 16)
-					    & 0xff);
-			txd->len = 0;
-			txd->stat = 0;
-			x++;
-		}
-
-		txd--;
-		txd->cp = (u_short)((blkp->txdesc + hc->mem_pstart)
-				    & 0xffff);
-
-		blkp->txtail = (u_int)txd - (u_int)hc->mem_start;
-	}
-
-	SRC_PUT8(hc->sca_base, dmac->dsr, 0);	/* Disable DMA */
-	SRC_PUT8(hc->sca_base, dmac->dcr, SCA_DCR_ABRT);
-	SRC_PUT8(hc->sca_base, dmac->dmr, SCA_DMR_TMOD | SCA_DMR_NF);
-	SRC_PUT8(hc->sca_base, dmac->dir,
-		 SCA_DIR_EOT | SCA_DIR_BOF | SCA_DIR_COF);
-
-	sarb_v = (sc->block[0].txdesc + hc->mem_pstart) >> 16;
-	sarb_v &= 0x00ff;
-
-	SRC_PUT8(hc->sca_base, dmac->sarb, (u_char) sarb_v);
-}
-
-/*
- * Look through the descriptors to see if there is a complete packet
- * available. Stop if we get to where the sca is busy.
- *
- * Return the length and status of the packet.
- * Return nonzero if there is a packet available.
- *
- * NOTE:
- * It seems that we get the interrupt a bit early. The updateing of
- * descriptor values is not always completed when this is called.
- */
-static int
-sr_packet_avail(struct sr_softc *sc, int *len, u_char *rxstat)
-{
-	int granules;	/* count of granules in pkt */
-	int wki, wko;
-	struct sr_hardc *hc;
-	sca_descriptor *rxdesc;	/* current descriptor */
-	sca_descriptor *endp;	/* ending descriptor */
-	sca_descriptor *cda;	/* starting descriptor */
-
-	hc = sc->hc;		/* get card's information */
-
-	/*
-	 * set up starting descriptor by pulling that info from the DMA half
-	 * of the HD chip...
-	 */
-	wki = DMAC_RXCH(sc->scachan);
-	wko = SRC_GET16(hc->sca_base, hc->sca->dmac[wki].cda);
-
-	cda = (sca_descriptor *)(hc->mem_start + (wko & hc->winmsk));
-
-#if BUGGY > 1
-	printf("sr_packet_avail(): wki=%d, wko=%04x, cda=%08x\n",
-	       wki, wko, cda);
-#endif
-
-	/*
-	 * open the appropriate memory window and set our expectations...
-	 */
-	if (hc->mempages) {
-		SRC_SET_MEM(hc->iobase, sc->rxdesc);
-		SRC_SET_ON(hc->iobase);
-	}
-	rxdesc = (sca_descriptor *)
-	    (hc->mem_start + (sc->rxdesc & hc->winmsk));
-	endp = rxdesc;
-	rxdesc = &rxdesc[sc->rxhind];
-	endp = &endp[sc->rxmax];
-
-	*len = 0;		/* reset result total length */
-	granules = 0;		/* reset count of granules */
-
-	/*
-	 * This loop will scan descriptors, but it *will* puke up if we wrap
-	 * around to our starting point...
-	 */
-	while (rxdesc != cda) {
-		*len += rxdesc->len;	/* increment result length */
-		granules++;
-
-		/*
-		 * If we hit a valid packet's completion we'll know we've
-		 * got a live one, and that we can deliver the packet.
-		 * Since we're only allowed to report a packet available,
-		 * somebody else does that...
-		 */
-		if (rxdesc->stat & SCA_DESC_EOM) {	/* End Of Message */
-			*rxstat = rxdesc->stat;	/* return closing */
-#if BUGGY > 0
-			printf("sr%d: PKT AVAIL len %d, %x, bufs %u.\n",
-			       sc->unit, *len, *rxstat, granules);
-#endif
-			return 1;	/* indicate success */
-		}
-		/*
-		 * OK, this packet take up multiple granules.  Move on to
-		 * the next descriptor so we can consider it...
-		 */
-		rxdesc++;
-
-		if (rxdesc == endp)	/* recognize & act on wrap point */
-			rxdesc = (sca_descriptor *)
-			    (hc->mem_start + (sc->rxdesc & hc->winmsk));
-	}
-
-	/*
-	 * Nothing found in the DPRAM.  Let the caller know...
-	 */
-	*len = 0;
-	*rxstat = 0;
-
-	return 0;
-}
-
-/*
- * Copy a packet from the on card memory into a provided mbuf.
- * Take into account that buffers wrap and that a packet may
- * be larger than a buffer.
- */
-static void
-sr_copy_rxbuf(struct mbuf *m, struct sr_softc *sc, int len)
-{
-	struct sr_hardc *hc;
-	sca_descriptor *rxdesc;
-	u_int rxdata;
-	u_int rxmax;
-	u_int off = 0;
-	u_int tlen;
-
-#if BUGGY > 0
-	printf("sr_copy_rxbuf(m=%08x,sc=%08x,len=%d)\n",
-	       m, sc, len);
-#endif
-
-	hc = sc->hc;
-
-	rxdata = sc->rxstart + (sc->rxhind * SR_BUF_SIZ);
-	rxmax = sc->rxstart + (sc->rxmax * SR_BUF_SIZ);
-
-	rxdesc = (sca_descriptor *)
-	    (hc->mem_start + (sc->rxdesc & hc->winmsk));
-	rxdesc = &rxdesc[sc->rxhind];
-
-	/*
-	 * Using the count of bytes in the received packet, we decrement it
-	 * for each granule (controller by an SCA descriptor) to control the
-	 * looping...
-	 */
-	while (len) {
-		/*
-		 * tlen gets the length of *this* granule... ...which is
-		 * then copied to the target buffer.
-		 */
-		tlen = (len < SR_BUF_SIZ) ? len : SR_BUF_SIZ;
-
-		if (hc->mempages)
-			SRC_SET_MEM(hc->iobase, rxdata);
-
-		bcopy(hc->mem_start + (rxdata & hc->winmsk),
-		      mtod(m, caddr_t) +off,
-		      tlen);
-
-		off += tlen;
-		len -= tlen;
-
-		/*
-		 * now, return to the descriptor's window in DPRAM and reset
-		 * the descriptor we've just suctioned...
-		 */
-		if (hc->mempages)
-			SRC_SET_MEM(hc->iobase, sc->rxdesc);
-
-		rxdesc->len = 0;
-		rxdesc->stat = 0xff;
-
-		/*
-		 * Move on to the next granule.  If we've any remaining
-		 * bytes to process we'll just continue in our loop...
-		 */
-		rxdata += SR_BUF_SIZ;
-		rxdesc++;
-
-		if (rxdata == rxmax) {	/* handle the wrap point */
-			rxdata = sc->rxstart;
-			rxdesc = (sca_descriptor *)
-			    (hc->mem_start + (sc->rxdesc & hc->winmsk));
-		}
-	}
-}
-
-/*
- * If single is set, just eat a packet. Otherwise eat everything up to
- * where cda points. Update pointers to point to the next packet.
- *
- * This handles "flushing" of a packet as received...
- *
- * If the "single" parameter is zero, all pending reeceive traffic will
- * be flushed out of existence.  A non-zero value will only drop the
- * *next* (currently) pending packet...
- */
-static void
-sr_eat_packet(struct sr_softc *sc, int single)
-{
-	struct sr_hardc *hc;
-	sca_descriptor *rxdesc;	/* current descriptor being eval'd */
-	sca_descriptor *endp;	/* last descriptor in chain */
-	sca_descriptor *cda;	/* current start point */
-	u_int loopcnt = 0;	/* count of packets flushed ??? */
-	u_char stat;		/* captured status byte from descr */
-
-	hc = sc->hc;
-	cda = (sca_descriptor *)(hc->mem_start +
-				 (SRC_GET16(hc->sca_base,
-				  hc->sca->dmac[DMAC_RXCH(sc->scachan)].cda) &
-				  hc->winmsk));
-
-	/*
-	 * loop until desc->stat == (0xff || EOM) Clear the status and
-	 * length in the descriptor. Increment the descriptor.
-	 */
-	if (hc->mempages)
-		SRC_SET_MEM(hc->iobase, sc->rxdesc);
-
-	rxdesc = (sca_descriptor *)
-	    (hc->mem_start + (sc->rxdesc & hc->winmsk));
-	endp = rxdesc;
-	rxdesc = &rxdesc[sc->rxhind];
-	endp = &endp[sc->rxmax];
-
-	/*
-	 * allow loop, but abort it if we wrap completely...
-	 */
-	while (rxdesc != cda) {
-		loopcnt++;
-
-		if (loopcnt > sc->rxmax) {
-			printf("sr%d: eat pkt %d loop, cda %x, "
-			       "rxdesc %x, stat %x.\n",
-			       sc->unit, loopcnt, (u_int) cda, (u_int) rxdesc,
-			       rxdesc->stat);
-			break;
-		}
-		stat = rxdesc->stat;
-
-		rxdesc->len = 0;
-		rxdesc->stat = 0xff;
-
-		rxdesc++;
-		sc->rxhind++;
-
-		if (rxdesc == endp) {
-			rxdesc = (sca_descriptor *)
-			    (hc->mem_start + (sc->rxdesc & hc->winmsk));
-			sc->rxhind = 0;
-		}
-		if (single && (stat == SCA_DESC_EOM))
-			break;
-	}
-
-	/*
-	 * Update the eda to the previous descriptor.
-	 */
-	rxdesc = (sca_descriptor *)sc->rxdesc;
-	rxdesc = &rxdesc[(sc->rxhind + sc->rxmax - 2) % sc->rxmax];
-
-	SRC_PUT16(hc->sca_base,
-		  hc->sca->dmac[DMAC_RXCH(sc->scachan)].eda,
-		  (u_short)((u_int)(rxdesc + hc->mem_pstart) & 0xffff));
-}
-
-/*
- * While there is packets available in the rx buffer, read them out
- * into mbufs and ship them off.
- */
-static void
-sr_get_packets(struct sr_softc *sc)
-{
-	u_char rxstat;		/* acquired status byte */
-	int i;
-	int pkts;		/* count of packets found */
-	int rxndx;		/* rcv buffer index */
-	int tries;		/* settling time counter */
-	u_int len;		/* length of pending packet */
-	struct sr_hardc *hc;	/* card-level information */
-	sca_descriptor *rxdesc;	/* descriptor in memory */
-#ifndef NETGRAPH
-	struct ifnet *ifp;	/* network intf ctl table */
-#else
-	int error;
-#endif /* NETGRAPH */
-	struct mbuf *m = NULL;	/* message buffer */
-
-#if BUGGY > 0
-	printf("sr_get_packets(sc=%08x)\n", sc);
-#endif
-
-	hc = sc->hc;
-#ifndef NETGRAPH
-	ifp = &sc->ifsppp.pp_if;
-#endif /* NETGRAPH */
-
-	if (hc->mempages) {
-		SRC_SET_MEM(hc->iobase, sc->rxdesc);
-		SRC_SET_ON(hc->iobase);	/* enable shared memory */
-	}
-	pkts = 0;		/* reset count of found packets */
-
-	/*
-	 * for each complete packet in the receiving pool, process each
-	 * packet...
-	 */
-	while (sr_packet_avail(sc, &len, &rxstat)) {	/* packet pending? */
-		/*
-		 * I have seen situations where we got the interrupt but the
-		 * status value wasn't deposited.  This code should allow
-		 * the status byte's value to settle...
-		 */
-
-		tries = 5;
-
-		while ((rxstat == 0x00ff)
-		       && --tries)
-			sr_packet_avail(sc, &len, &rxstat);
-
-#if BUGGY > 1
-		printf("sr_packet_avail() returned len=%d, rxstat=%02ux\n",
-		       len, rxstat);
-#endif
-
-		pkts++;
-#ifdef NETGRAPH
-		sc->inbytes += len;
-		sc->inlast = 0;
-#endif /* NETGRAPH */
-
-		/*
-		 * OK, we've settled the incoming message status. We can now
-		 * process it...
-		 */
-		if (((rxstat & SCA_DESC_ERRORS) == 0) && (len < MCLBYTES)) {
-#if BUGGY > 1
-			printf("sr%d: sr_get_packet() rxstat=%02x, len=%d\n",
-			       sc->unit, rxstat, len);
-#endif
-
-			MGETHDR(m, M_DONTWAIT, MT_DATA);
-			if (m == NULL) {
-				/*
-				 * eat (flush) packet if get mbuf fail!!
-				 */
-				sr_eat_packet(sc, 1);
-				continue;
-			}
-			/*
-			 * construct control information for pass-off
-			 */
-#ifndef NETGRAPH
-			m->m_pkthdr.rcvif = ifp;
-#else
-			m->m_pkthdr.rcvif = NULL;
-#endif /* NETGRAPH */
-			m->m_pkthdr.len = m->m_len = len;
-			if (len > MHLEN) {
-				MCLGET(m, M_DONTWAIT);
-				if ((m->m_flags & M_EXT) == 0) {
-					/*
-					 * We couldn't get a big enough
-					 * message packet, so we'll send the
-					 * packet to /dev/null...
-					 */
-					m_freem(m);
-					sr_eat_packet(sc, 1);
-					continue;
-				}
-			}
-			/*
-			 * OK, we've got a good message buffer.  Now we can
-			 * copy the received message into it
-			 */
-			sr_copy_rxbuf(m, sc, len);	/* copy from DPRAM */
-
-#ifndef NETGRAPH
-			if (ifp->if_bpf)
-				bpf_mtap(ifp, m);
-
-#if BUGGY > 3
-			{
-				u_char *bp;
-
-				bp = (u_char *)m;
-				printf("sr%d: rcvd=%02x%02x%02x%02x%02x%02x\n",
-				       sc->unit,
-				       bp[0], bp[1], bp[2],
-				       bp[4], bp[5], bp[6]);
-			}
-#endif
-			sppp_input(ifp, m);
-			ifp->if_ipackets++;
-
-#else	/* NETGRAPH */
-#if BUGGY > 3
-			{
-				u_char *bp;
-
-				bp = mtod(m,u_char *);
-				printf("sr%d: rd=%02x:%02x:%02x:%02x:%02x:%02x",
-				       sc->unit,
-				       bp[0], bp[1], bp[2],
-				       bp[4], bp[5], bp[6]);
-				printf(":%02x:%02x:%02x:%02x:%02x:%02x\n",
-				       bp[6], bp[7], bp[8],
-				       bp[9], bp[10], bp[11]);
-			}
-#endif
-			NG_SEND_DATA_ONLY(error, sc->hook, m);
-			sc->ipackets++;
-#endif /* NETGRAPH */
-			/*
-			 * Update the eda to the previous descriptor.
-			 */
-			i = (len + SR_BUF_SIZ - 1) / SR_BUF_SIZ;
-			sc->rxhind = (sc->rxhind + i) % sc->rxmax;
-
-			rxdesc = (sca_descriptor *)sc->rxdesc;
-			rxndx = (sc->rxhind + sc->rxmax - 2) % sc->rxmax;
-			rxdesc = &rxdesc[rxndx];
-
-			SRC_PUT16(hc->sca_base,
-				  hc->sca->dmac[DMAC_RXCH(sc->scachan)].eda,
-				  (u_short)((u_int)(rxdesc + hc->mem_pstart)
-					     & 0xffff));
-
-		} else {
-			int got_st3, got_cda, got_eda;
-			int tries = 5;
-
-			while((rxstat == 0xff) && --tries)
-				sr_packet_avail(sc, &len, &rxstat);
-
-			/*
-			 * It look like we get an interrupt early
-			 * sometimes and then the status is not
-			 * filled in yet.
-			 */
-			if(tries && (tries != 5))
-				continue;
-
-			/*
-			 * This chunk of code handles the error packets.
-			 * We'll log them for posterity...
-			 */
-			sr_eat_packet(sc, 1);
-
-#ifndef NETGRAPH
-			ifp->if_ierrors++;
-#else
-			sc->ierrors[0]++;
-#endif /* NETGRAPH */
-
-			got_st3 = SRC_GET8(hc->sca_base,
-				  hc->sca->msci[sc->scachan].st3);
-			got_cda = SRC_GET16(hc->sca_base,
-				  hc->sca->dmac[DMAC_RXCH(sc->scachan)].cda);
-			got_eda = SRC_GET16(hc->sca_base,
-				  hc->sca->dmac[DMAC_RXCH(sc->scachan)].eda);
-
-#if BUGGY > 0
-			printf("sr%d: Receive error chan %d, "
-			       "stat %02x, msci st3 %02x,"
-			       "rxhind %d, cda %04x, eda %04x.\n",
-			       sc->unit, sc->scachan, rxstat,
-			       got_st3, sc->rxhind, got_cda, got_eda);
-#endif
-		}
-	}
-
-#if BUGGY > 0
-	printf("sr%d: sr_get_packets() found %d packet(s)\n",
-	       sc->unit, pkts);
-#endif
-
-	if (hc->mempages)
-		SRC_SET_OFF(hc->iobase);
-}
-
-/*
- * All DMA interrupts come here.
- *
- * Each channel has two interrupts.
- * Interrupt A for errors and Interrupt B for normal stuff like end
- * of transmit or receive dmas.
- */
-static void
-sr_dmac_intr(struct sr_hardc *hc, u_char isr1)
-{
-	u_char dsr;		/* contents of DMA Stat Reg */
-	u_char dotxstart;	/* enables for tranmit part */
-	int mch;		/* channel being processed */
-	struct sr_softc *sc;	/* channel's softc structure */
-	sca_regs *sca = hc->sca;
-	dmac_channel *dmac;	/* dma structure of chip */
-
-#if BUGGY > 0
-	printf("sr_dmac_intr(hc=%08x,isr1=%04x)\n", hc, isr1);
-#endif
-
-	mch = 0;		/* assume chan0 on card */
-	dotxstart = isr1;	/* copy for xmitter starts */
-
-	/*
-	 * Shortcut if there is no interrupts for dma channel 0 or 1.
-	 * Skip processing for channel 0 if no incoming hit
-	 */
-	if ((isr1 & 0x0F) == 0) {
-		mch = 1;
-		isr1 >>= 4;
-	}
-	do {
-		sc = &hc->sc[mch];
-
-		/*
-		 * Transmit channel - DMA Status Register Evaluation
-		 */
-		if (isr1 & 0x0C) {
-			dmac = &sca->dmac[DMAC_TXCH(mch)];
-
-			/*
-			 * get the DMA Status Register contents and write
-			 * back to reset interrupt...
-			 */
-			dsr = SRC_GET8(hc->sca_base, dmac->dsr);
-			SRC_PUT8(hc->sca_base, dmac->dsr, dsr);
-
-			/*
-			 * Check for (& process) a Counter overflow
-			 */
-			if (dsr & SCA_DSR_COF) {
-				printf("sr%d: TX DMA Counter overflow, "
-				       "txpacket no %lu.\n",
-#ifndef NETGRAPH
-				       sc->unit, sc->ifsppp.pp_if.if_opackets);
-				sc->ifsppp.pp_if.if_oerrors++;
-#else
-				       sc->unit, sc->opackets);
-				sc->oerrors++;
-#endif /* NETGRAPH */
-			}
-			/*
-			 * Check for (& process) a Buffer overflow
-			 */
-			if (dsr & SCA_DSR_BOF) {
-				printf("sr%d: TX DMA Buffer overflow, "
-				       "txpacket no %lu, dsr %02x, "
-				       "cda %04x, eda %04x.\n",
-#ifndef NETGRAPH
-				       sc->unit, sc->ifsppp.pp_if.if_opackets,
-#else
-				       sc->unit, sc->opackets,
-#endif /* NETGRAPH */
-				       dsr,
-				       SRC_GET16(hc->sca_base, dmac->cda),
-				       SRC_GET16(hc->sca_base, dmac->eda));
-#ifndef NETGRAPH
-				sc->ifsppp.pp_if.if_oerrors++;
-#else
-				sc->oerrors++;
-#endif /* NETGRAPH */
-			}
-			/*
-			 * Check for (& process) an End of Transfer (OK)
-			 */
-			if (dsr & SCA_DSR_EOT) {
-				/*
-				 * This should be the most common case.
-				 *
-				 * Clear the IFF_OACTIVE flag.
-				 *
-				 * Call srstart to start a new transmit if
-				 * there is data to transmit.
-				 */
-#if BUGGY > 0
-				printf("sr%d: TX Completed OK\n", sc->unit);
-#endif
-				sc->xmit_busy = 0;
-#ifndef NETGRAPH
-				sc->ifsppp.pp_if.if_flags &= ~IFF_OACTIVE;
-				sc->ifsppp.pp_if.if_timer = 0;
-#else
-				/* XXX may need to mark tx inactive? */
-				sc->out_deficit++;
-				sc->out_dog = DOG_HOLDOFF;
-#endif /* NETGRAPH */
-
-				if (sc->txb_inuse && --sc->txb_inuse)
-					sr_xmit(sc);
-			}
-		}
-		/*
-		 * Receive channel processing of DMA Status Register
-		 */
-		if (isr1 & 0x03) {
-			dmac = &sca->dmac[DMAC_RXCH(mch)];
-
-			dsr = SRC_GET8(hc->sca_base, dmac->dsr);
-			SRC_PUT8(hc->sca_base, dmac->dsr, dsr);
-
-			/*
-			 * End of frame processing (MSG OK?)
-			 */
-			if (dsr & SCA_DSR_EOM) {
-#if BUGGY > 0
-				int tt, ind;
-
-#ifndef NETGRAPH
-				tt = sc->ifsppp.pp_if.if_ipackets;
-#else	/* NETGRAPH */
-				tt = sc->ipackets;
-#endif /* NETGRAPH */
-				ind = sc->rxhind;
-#endif
-
-				sr_get_packets(sc);
-#if BUGGY > 0
-#ifndef NETGRAPH
-				if (tt == sc->ifsppp.pp_if.if_ipackets)
-#else	/* NETGRAPH */
-				if (tt == sc->ipackets)
-#endif /* NETGRAPH */
-				{
-					sca_descriptor *rxdesc;
-					int i;
-
-					printf("SR: RXINTR isr1 %x, dsr %x, "
-					       "no data %d pkts, orxind %d.\n",
-					       dotxstart, dsr, tt, ind);
-					printf("SR: rxdesc %x, rxstart %x, "
-					       "rxend %x, rxhind %d, "
-					       "rxmax %d.\n",
-					       sc->rxdesc, sc->rxstart,
-					       sc->rxend, sc->rxhind,
-					       sc->rxmax);
-					printf("SR: cda %x, eda %x.\n",
-					    SRC_GET16(hc->sca_base, dmac->cda),
-					    SRC_GET16(hc->sca_base, dmac->eda));
-
-					if (hc->mempages) {
-						SRC_SET_ON(hc->iobase);
-						SRC_SET_MEM(hc->iobase, sc->rxdesc);
-					}
-					rxdesc = (sca_descriptor *)
-					         (hc->mem_start +
-					          (sc->rxdesc & hc->winmsk));
-					rxdesc = &rxdesc[sc->rxhind];
-
-					for (i = 0; i < 3; i++, rxdesc++)
-						printf("SR: rxdesc->stat %x, "
-						       "len %d.\n",
-						       rxdesc->stat,
-						       rxdesc->len);
-
-					if (hc->mempages)
-						SRC_SET_OFF(hc->iobase);
-				}
-#endif /* BUGGY */
-			}
-			/*
-			 * Check for Counter overflow
-			 */
-			if (dsr & SCA_DSR_COF) {
-				printf("sr%d: RX DMA Counter overflow, "
-				       "rxpkts %lu.\n",
-#ifndef NETGRAPH
-				       sc->unit, sc->ifsppp.pp_if.if_ipackets);
-				sc->ifsppp.pp_if.if_ierrors++;
-#else	/* NETGRAPH */
-				       sc->unit, sc->ipackets);
-				sc->ierrors[1]++;
-#endif /* NETGRAPH */
-			}
-			/*
-			 * Check for Buffer overflow
-			 */
-			if (dsr & SCA_DSR_BOF) {
-				printf("sr%d: RX DMA Buffer overflow, "
-				       "rxpkts %lu, rxind %d, "
-				       "cda %x, eda %x, dsr %x.\n",
-#ifndef NETGRAPH
-				       sc->unit, sc->ifsppp.pp_if.if_ipackets,
-#else	/* NETGRAPH */
-				       sc->unit, sc->ipackets,
-#endif /* NETGRAPH */
-				       sc->rxhind,
-				       SRC_GET16(hc->sca_base, dmac->cda),
-				       SRC_GET16(hc->sca_base, dmac->eda),
-				       dsr);
-
-				/*
-				 * Make sure we eat as many as possible.
-				 * Then get the system running again.
-				 */
-				if (hc->mempages)
-					SRC_SET_ON(hc->iobase);
-
-				sr_eat_packet(sc, 0);
-#ifndef NETGRAPH
-				sc->ifsppp.pp_if.if_ierrors++;
-#else	/* NETGRAPH */
-				sc->ierrors[2]++;
-#endif /* NETGRAPH */
-
-				SRC_PUT8(hc->sca_base,
-					 sca->msci[mch].cmd,
-					 SCA_CMD_RXMSGREJ);
-
-				SRC_PUT8(hc->sca_base, dmac->dsr, SCA_DSR_DE);
-
-#if BUGGY > 0
-				printf("sr%d: RX DMA Buffer overflow, "
-				       "rxpkts %lu, rxind %d, "
-				       "cda %x, eda %x, dsr %x. After\n",
-				       sc->unit,
-#ifndef NETGRAPH
-				       sc->ipackets,
-#else	/* NETGRAPH */
-				       sc->ifsppp.pp_if.if_ipackets,
-#endif /* NETGRAPH */
-				       sc->rxhind,
-				       SRC_GET16(hc->sca_base, dmac->cda),
-				       SRC_GET16(hc->sca_base, dmac->eda),
-				       SRC_GET8(hc->sca_base, dmac->dsr));
-#endif
-
-				if (hc->mempages)
-					SRC_SET_OFF(hc->iobase);
-			}
-			/*
-			 * End of Transfer
-			 */
-			if (dsr & SCA_DSR_EOT) {
-				/*
-				 * If this happen, it means that we are
-				 * receiving faster than what the processor
-				 * can handle.
-				 * 
-				 * XXX We should enable the dma again.
-				 */
-				printf("sr%d: RX End of xfer, rxpkts %lu.\n",
-				       sc->unit,
-#ifndef NETGRAPH
-				       sc->ifsppp.pp_if.if_ipackets);
-				sc->ifsppp.pp_if.if_ierrors++;
-#else
-				       sc->ipackets);
-				sc->ierrors[3]++;
-#endif /* NETGRAPH */
-			}
-		}
-		isr1 >>= 4;	/* process next half of ISR */
-		mch++;		/* and move to next channel */
-	} while ((mch < NCHAN) && isr1);	/* loop for each chn */
-
-	/*
-	 * Now that we have done all the urgent things, see if we can fill
-	 * the transmit buffers.
-	 */
-	for (mch = 0; mch < NCHAN; mch++) {
-		if (dotxstart & 0x0C) {	/* TX initiation enabled? */
-			sc = &hc->sc[mch];
-#ifndef NETGRAPH
-			srstart(&sc->ifsppp.pp_if);
-#else
-			srstart(sc);
-#endif /* NETGRAPH */
-		}
-		dotxstart >>= 4;/* shift for next channel */
-	}
-}
-#ifndef NETGRAPH
-/*
- * Perform timeout on an FR channel 
- *
- * Establish a periodic check of open N2 ports;  If
- * a port is open/active, its DCD state is checked
- * and a loss of DCD is recognized (and eventually
- * processed).
- */
-static void
-sr_modemck(void *arg)
-{
-	u_int s;
-	int card;		/* card index in table */
-	int cards;		/* card list index */
-	int mch;		/* channel on card */
-	u_char dcd_v;		/* Data Carrier Detect */
-	u_char got_st0;		/* contents of ST0 */
-	u_char got_st1;		/* contents of ST1 */
-	u_char got_st2;		/* contents of ST2 */
-	u_char got_st3;		/* contents of ST3 */
-	struct sr_hardc *hc;	/* card's configuration */
-	struct sr_hardc *Card[16];/* up to 16 cards in system */
-	struct sr_softc *sc;	/* channel's softc structure */
-	struct ifnet *ifp;	/* interface control table */
-	msci_channel *msci;	/* regs specific to channel */
-
-	s = splimp();
-
-#if	0
-	if (sr_opens == 0) {	/* count of "up" channels */
-		sr_watcher = 0;	/* indicate no watcher */
-		splx(s);
-		return;
-	}
-#endif
-
-	sr_watcher = 1;		/* mark that we're online */
-
-	/*
-	 * Now we'll need a list of cards to process.  Since we can handle
-	 * both ISA and PCI cards (and I didn't think of making this logic
-	 * global YET) we'll generate a single table of card table
-	 * addresses.
-	 */
-	cards = 0;
-
-	for (card = 0; card < NSR; card++) {
-		hc = &sr_hardc[card];
-
-		if (hc->sc == (void *)0)
-			continue;
-
-		Card[cards++] = hc;
-	}
-
-	hc = sr_hardc_pci;
-
-	while (hc) {
-		Card[cards++] = hc;
-		hc = hc->next;
-	}
-
-	/*
-	 * OK, we've got work we can do.  Let's do it... (Please note that
-	 * this code _only_ deals w/ ISA cards)
-	 */
-	for (card = 0; card < cards; card++) {
-		hc = Card[card];/* get card table */
-
-		for (mch = 0; mch < hc->numports; mch++) {
-			sc = &hc->sc[mch];
-
-			ifp = &sc->ifsppp.pp_if;
-
-			/*
-			 * if this channel isn't "up", skip it
-			 */
-			if ((ifp->if_flags & IFF_UP) == 0)
-				continue;
-
-			/*
-			 * OK, now we can go looking at this channel's
-			 * actual register contents...
-			 */
-			msci = &hc->sca->msci[sc->scachan];
-
-			/*
-			 * OK, now we'll look into the actual status of this
-			 * channel...
-			 * 
-			 * I suck in more registers than strictly needed
-			 */
-			got_st0 = SRC_GET8(hc->sca_base, msci->st0);
-			got_st1 = SRC_GET8(hc->sca_base, msci->st1);
-			got_st2 = SRC_GET8(hc->sca_base, msci->st2);
-			got_st3 = SRC_GET8(hc->sca_base, msci->st3);
-
-			/*
-			 * We want to see if the DCD signal is up (DCD is
-			 * true if zero)
-			 */
-			dcd_v = (got_st3 & SCA_ST3_DCD) == 0;
-
-			if (dcd_v == 0)
-				printf("sr%d: DCD lost\n", sc->unit);
-		}
-	}
-
-	/*
-	 * OK, now set up for the next modem signal checking pass...
-	 */
-	timeout(sr_modemck, NULL, hz);
-
-	splx(s);
-}
-
-#else	/* NETGRAPH */
-/*
- * If a port is open/active, it's DCD state is checked
- * and a loss of DCD is recognized (and eventually processed?).
- */
-static void
-sr_modemck(struct sr_softc *sc )
-{
-	u_int s;
-	u_char got_st3;			/* contents of ST3 */
-	struct sr_hardc *hc = sc->hc;	/* card's configuration */
-	msci_channel *msci;		/* regs specific to channel */
-
-	s = splimp();
-
-
-	if (sc->running == 0)
-		return;
-	/*
-	 * OK, now we can go looking at this channel's register contents...
-	 */
-	msci = &hc->sca->msci[sc->scachan];
-	got_st3 = SRC_GET8(hc->sca_base, msci->st3);
-
-	/*
-	 * We want to see if the DCD signal is up (DCD is true if zero)
-	 */
-	sc->dcd = (got_st3 & SCA_ST3_DCD) == 0;
-	splx(s);
-}
-
-#endif	/* NETGRAPH */
-static void
-sr_msci_intr(struct sr_hardc *hc, u_char isr0)
-{
-	printf("src%d: SRINTR: MSCI\n", hc->cunit);
-}
-
-static void
-sr_timer_intr(struct sr_hardc *hc, u_char isr2)
-{
-	printf("src%d: SRINTR: TIMER\n", hc->cunit);
-}
-
-#ifdef	NETGRAPH
-/*****************************************
- * Device timeout/watchdog routine.
- * called once per second.
- * checks to see that if activity was expected, that it hapenned.
- * At present we only look to see if expected output was completed.
- */
-static void
-ngsr_watchdog_frame(void * arg)
-{
-	struct sr_softc * sc = arg;
-	int s;
-	int	speed;
-
-	if(sc->running == 0)
-		return; /* if we are not running let timeouts die */
-	/*
-	 * calculate the apparent throughputs 
-	 *  XXX a real hack
-	 */
-	s = splimp();
-	speed = sc->inbytes - sc->lastinbytes;
-	sc->lastinbytes = sc->inbytes;
-	if ( sc->inrate < speed )
-		sc->inrate = speed;
-	speed = sc->outbytes - sc->lastoutbytes;
-	sc->lastoutbytes = sc->outbytes;
-	if ( sc->outrate < speed )
-		sc->outrate = speed;
-	sc->inlast++;
-	splx(s);
-
-	if ((sc->inlast > QUITE_A_WHILE)
-	&& (sc->out_deficit > LOTS_OF_PACKETS)) {
-		log(LOG_ERR, "sr%d: No response from remote end\n", sc->unit);
-		s = splimp();
-		sr_down(sc);
-		sr_up(sc);
-		sc->inlast = sc->out_deficit = 0;
-		splx(s);
-	} else if ( sc->xmit_busy ) { /* no TX -> no TX timeouts */
-		if (sc->out_dog == 0) { 
-			log(LOG_ERR, "sr%d: Transmit failure.. no clock?\n",
-					sc->unit);
-			s = splimp();
-			srwatchdog(sc);
-#if 0
-			sr_down(sc);
-			sr_up(sc);
-#endif
-			splx(s);
-			sc->inlast = sc->out_deficit = 0;
-		} else {
-			sc->out_dog--;
-		}
-	}
-	sr_modemck(sc); 	/* update the DCD status */
-	sc->handle = timeout(ngsr_watchdog_frame, sc, hz);
-}
-
-/***********************************************************************
- * This section contains the methods for the Netgraph interface
- ***********************************************************************/
-/*
- * It is not possible or allowable to create a node of this type.
- * If the hardware exists, it will already have created it.
- */
-static	int
-ngsr_constructor(node_p node)
-{
-	return (EINVAL);
-}
-
-/*
- * give our ok for a hook to be added...
- * If we are not running this should kick the device into life.
- * The hook's private info points to our stash of info about that
- * channel.
- */
-static int
-ngsr_newhook(node_p node, hook_p hook, const char *name)
-{
-	struct sr_softc *	sc = NG_NODE_PRIVATE(node);
-
-	/*
-	 * check if it's our friend the debug hook
-	 */
-	if (strcmp(name, NG_SR_HOOK_DEBUG) == 0) {
-		NG_HOOK_SET_PRIVATE(hook, NULL); /* paranoid */
-		sc->debug_hook = hook;
-		return (0);
-	}
-
-	/*
-	 * Check for raw mode hook.
-	 */
-	if (strcmp(name, NG_SR_HOOK_RAW) != 0) {
-		return (EINVAL);
-	}
-	NG_HOOK_SET_PRIVATE(hook, sc);
-	sc->hook = hook;
-	sc->datahooks++;
-	sr_up(sc);
-	return (0);
-}
-
-/*
- * incoming messages.
- * Just respond to the generic TEXT_STATUS message
- */
-static	int
-ngsr_rcvmsg(node_p node, item_p item, hook_p lasthook)
-{
-	struct sr_softc *	sc;
-	struct ng_mesg *resp = NULL;
-	int error = 0;
-	struct ng_mesg *msg;
-
-	NGI_GET_MSG(item,msg);
-	sc = NG_NODE_PRIVATE(node);
-	switch (msg->header.typecookie) {
-	case	NG_SR_COOKIE: 
-		error = EINVAL;
-		break;
-	case	NGM_GENERIC_COOKIE: 
-		switch(msg->header.cmd) {
-		case NGM_TEXT_STATUS: {
-			char        *arg;
-			int pos = 0;
-
-			int resplen = sizeof(struct ng_mesg) + 512;
-			NG_MKRESPONSE(resp, msg, resplen, M_NOWAIT);
-			if (resp == NULL) {
-				error = ENOMEM;
-				break;
-			}
-			arg = (resp)->data;
-			pos = sprintf(arg, "%ld bytes in, %ld bytes out\n"
-			    "highest rate seen: %ld B/S in, %ld B/S out\n",
-			sc->inbytes, sc->outbytes,
-			sc->inrate, sc->outrate);
-			pos += sprintf(arg + pos,
-				"%ld output errors\n",
-			    	sc->oerrors);
-			pos += sprintf(arg + pos,
-				"ierrors = %ld, %ld, %ld, %ld, %ld, %ld\n",
-			    	sc->ierrors[0],
-			    	sc->ierrors[1],
-			    	sc->ierrors[2],
-			    	sc->ierrors[3],
-			    	sc->ierrors[4],
-			    	sc->ierrors[5]);
-
-			resp->header.arglen = pos + 1;
-			break;
-		      }
-	    	default:
-		 	error = EINVAL;
-		 	break;
-		}
-		break;
-	default:
-		error = EINVAL;
-		break;
-	}
-	/* Take care of synchronous response, if any */
-	NG_RESPOND_MSG(error, node, item, resp);
-	NG_FREE_MSG(msg);
-	return (error);
-}
-
-/*
- * get data from another node and transmit it to the correct channel
- */
-static	int
-ngsr_rcvdata(hook_p hook, item_p item)
-{
-	int s;
-	int error = 0;
-	struct sr_softc * sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
-	struct ifqueue	*xmitq_p;
-	struct mbuf *m;
-	meta_p meta;
-	
-	NGI_GET_M(item, m);
-	NGI_GET_META(item, meta);
-	NG_FREE_ITEM(item);
-	/*
-	 * data doesn't come in from just anywhere (e.g control hook)
-	 */
-	if ( NG_HOOK_PRIVATE(hook) == NULL) {
-		error = ENETDOWN;
-		goto bad;
-	}
-
-	/* 
-	 * Now queue the data for when it can be sent
-	 */
-	if (meta && meta->priority > 0) {
-		xmitq_p = (&sc->xmitq_hipri);
-	} else {
-		xmitq_p = (&sc->xmitq);
-	}
-	s = splimp();
-	IF_LOCK(xmitq_p);
-	if (_IF_QFULL(xmitq_p)) {
-		_IF_DROP(xmitq_p);
-		IF_UNLOCK(xmitq_p);
-		splx(s);
-		error = ENOBUFS;
-		goto bad;
-	}
-	_IF_ENQUEUE(xmitq_p, m);
-	IF_UNLOCK(xmitq_p);
-	srstart(sc);
-	splx(s);
-	return (0);
-
-bad:
-	/* 
-	 * It was an error case.
-	 * check if we need to free the mbuf, and then return the error
-	 */
-	NG_FREE_M(m);
-	NG_FREE_META(meta);
-	return (error);
-}
-
-/*
- * do local shutdown processing..
- * this node will refuse to go away, unless the hardware says to..
- * don't unref the node, or remove our name. just clear our links up.
- */
-static	int
-ngsr_shutdown(node_p node)
-{
-	struct sr_softc * sc = NG_NODE_PRIVATE(node);
-
-	sr_down(sc);
-	NG_NODE_UNREF(node);
-/* XXX should drain queues! */
-	if (ng_make_node_common(&typestruct, &sc->node) != 0)
-		return (0);
-	sprintf(sc->nodename, "%s%d", NG_SR_NODE_TYPE, sc->unit);
-	if (ng_name_node(sc->node, sc->nodename)) {
-		printf("node naming failed\n");
-		sc->node = NULL;
-		NG_NODE_UNREF(sc->node); /* drop it again */
-		return (0);
-	}
-	NG_NODE_SET_PRIVATE(sc->node, sc);
-	callout_handle_init(&sc->handle); /* should kill timeout */
-	sc->running = 0;
-	return (0);
-}
-
-/* already linked */
-static	int
-ngsr_connect(hook_p hook)
-{
-	/* probably not at splnet, force outward queueing */
-	NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
-	/* be really amiable and just say "YUP that's OK by me! " */
-	return (0);
-}
-
-/*
- * notify on hook disconnection (destruction)
- *
- * Invalidate the private data associated with this dlci.
- * For this type, removal of the last link resets tries to destroy the node.
- * As the device still exists, the shutdown method will not actually
- * destroy the node, but reset the device and leave it 'fresh' :)
- *
- * The node removal code will remove all references except that owned by the
- * driver. 
- */
-static	int
-ngsr_disconnect(hook_p hook)
-{
-	struct sr_softc * sc = NG_NODE_PRIVATE(NG_HOOK_NODE(hook));
-	int	s;
-	/*
-	 * If it's the data hook, then free resources etc.
-	 */
-	if (NG_HOOK_PRIVATE(hook)) {
-		s = splimp();
-		sc->datahooks--;
-		if (sc->datahooks == 0)
-			sr_down(sc);
-		splx(s);
-	} else {
-		sc->debug_hook = NULL;
-	}
-	return (0);
-}
-
-/*
- * called during bootup
- * or LKM loading to put this type into the list of known modules
- */
-static void
-ngsr_init(void *ignored)
-{
-	if (ng_newtype(&typestruct))
-		printf("ngsr install failed\n");
-	ngsr_done_init = 1;
-}
-#endif /* NETGRAPH */
-
-/*
- ********************************* END ************************************
- */
diff --git a/sys/i386/isa/if_sr.h b/sys/i386/isa/if_sr.h
deleted file mode 100644
index a55a6d3..0000000
--- a/sys/i386/isa/if_sr.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * if_sr.h
- *
- * Copyright (C) 1997-1999 Whistle Communications Inc.
- * All rights reserved.
- *
- * Subject to the following obligations and disclaimer of warranty, use and
- * redistribution of this software, in source or object code forms, with or
- * without modifications are expressly permitted by Whistle Communications;
- * provided, however, that:
- * 1. Any and all reproductions of the source or object code must include the
- *    copyright notice above and the following disclaimer of warranties; and
- * 2. No rights are granted, in any manner or form, to use Whistle
- *    Communications, Inc. trademarks, including the mark "WHISTLE
- *    COMMUNICATIONS" on advertising, endorsements, or otherwise except as
- *    such appears in the above copyright notice or in the software.
- * 
- * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
- * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
- * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
- * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
- * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
- * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
- * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
- * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
- * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
- * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
- * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER 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 WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
- * OF SUCH DAMAGE.
-
- * $FreeBSD$
- */
-
-#ifndef _I386_ISA_IF_SR_H_
-#define _I386_ISA_IF_SR_H_
-
-/* Node type name and type cookie */
-#define NG_SR_NODE_TYPE		"sync_sr"
-#define NG_SR_COOKIE		860552148
-
-/* Netgraph hooks */
-#define NG_SR_HOOK_DEBUG	"debug"
-#define NG_SR_HOOK_RAW		"rawdata"
-
-#endif /* _I386_ISA_IF_SR_H_ */
-
diff --git a/sys/i386/isa/if_srregs.h b/sys/i386/isa/if_srregs.h
deleted file mode 100644
index 64d9ba1..0000000
--- a/sys/i386/isa/if_srregs.h
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * Copyright (c) 1995 John Hay.
- * Copyright (c) 1996 SDL Communications, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the author nor the names of any co-contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
- *
- * $FreeBSD$
- */
-#ifndef _IF_SRREGS_H_
-#define _IF_SRREGS_H_
-
-#define NCHAN			2    /* A HD64570 chip have 2 channels */
-
-#define SR_BUF_SIZ		512
-#define SR_TX_BLOCKS		2    /* Sepperate sets of tx buffers */
-
-#define SR_CRD_N2		1
-#define SR_CRD_N2PCI		2
-
-/*
- * RISCom/N2 ISA card.
- */
-#define SRC_IO_SIZ		0x10 /* Actually a lie. It uses a lot more. */
-#define SRC_WIN_SIZ		0x00004000
-#define SRC_WIN_MSK		(SRC_WIN_SIZ - 1)
-#define SRC_WIN_SHFT		14
-
-#define SR_FLAGS_NCHAN_MSK	0x0000000F
-#define SR_FLAGS_0_CLK_MSK	0x00000030
-#define SR_FLAGS_0_EXT_CLK	0x00000000 /* External RX clock shared by TX */
-#define SR_FLAGS_0_EXT_SEP_CLK	0x00000010 /* Sepperate external clocks */
-#define SR_FLAGS_0_INT_CLK	0x00000020 /* Internal clock */
-#define SR_FLAGS_1_CLK_MSK	0x000000C0
-#define SR_FLAGS_1_EXT_CLK	0x00000000 /* External RX clock shared by TX */
-#define SR_FLAGS_1_EXT_SEP_CLK	0x00000040 /* Sepperate external clocks */
-#define SR_FLAGS_1_INT_CLK	0x00000080 /* Internal clock */
-
-#define SR_FLAGS_CLK_SHFT	4
-#define SR_FLAGS_CLK_CHAN_SHFT  2
-#define SR_FLAGS_EXT_CLK	0x00000000 /* External RX clock shared by TX */
-#define SR_FLAGS_EXT_SEP_CLK	0x00000001 /* Sepperate external clocks */
-#define SR_FLAGS_INT_CLK	0x00000002 /* Internal clock */
-
-#define SR_PCR			0x00 /* RW, PC Control Register */
-#define SR_BAR			0x02 /* RW, Base Address Register */
-#define SR_PSR			0x04 /* RW, Page Scan Register */
-#define SR_MCR			0x06 /* RW, Modem Control Register */
-
-#define SR_PCR_SCARUN		0x01 /* !Reset */
-#define SR_PCR_EN_VPM		0x02 /* Running above 1M */
-#define SR_PCR_MEM_WIN		0x04 /* Open memory window */
-#define SR_PCR_ISA16		0x08 /* 16 bit ISA mode */
-#define SR_PCR_16M_SEL		0xF0 /* A20-A23 Addresses */
-
-#define SR_PSR_PG_SEL		0x1F /* Page 0 - 31 select */
-#define SR_PG_MSK		0x1F
-#define SR_PSR_WIN_SIZ		0x60 /* Window size select */
-#define SR_PSR_WIN_16K		0x00
-#define SR_PSR_WIN_32K		0x20
-#define SR_PSR_WIN_64K		0x40
-#define SR_PSR_WIN_128K		0x60
-#define SR_PSR_EN_SCA_DMA	0x80 /* Enable the SCA DMA */
-
-#define SR_MCR_DTR0		0x01 /* Deactivate DTR0 */
-#define SR_MCR_DTR1		0x02 /* Deactivate DTR1 */
-#define SR_MCR_DSR0		0x04 /* DSR0 Status */
-#define SR_MCR_DSR1		0x08 /* DSR1 Status */
-#define SR_MCR_TE0		0x10 /* Enable RS422 TXD */
-#define SR_MCR_TE1		0x20 /* Enable RS422 TXD */
-#define SR_MCR_ETC0		0x40 /* Enable Ext Clock out */
-#define SR_MCR_ETC1		0x80 /* Enable Ext Clock out */
-
-/*
- * RISCom/N2 PCI card.
- */
-#define SR_FECR			0x0200 /* Front End Control Register */
-#define SR_FECR_ETC0		0x0001 /* Enable Ext Clock out */
-#define SR_FECR_ETC1		0x0002 /* Enable Ext Clock out */
-#define SR_FECR_TE0		0x0004 /* Enable RS422 TXD */
-#define SR_FECR_TE1		0x0008 /* Enable RS422 TXD */
-#define SR_FECR_GPO0		0x0010 /* General Purpose Output */
-#define SR_FECR_GPO1		0x0020 /* General Purpose Output */
-#define SR_FECR_DTR0		0x0040 /* 0 for active, 1 for inactive */
-#define SR_FECR_DTR1		0x0080 /* 0 for active, 1 for inactive */
-#define SR_FECR_DSR0		0x0100 /* DSR0 Status */
-#define SR_FECR_ID0		0x0E00 /* ID of channel 0 */
-#define SR_FECR_DSR1		0x1000 /* DSR1 Status */
-#define SR_FECR_ID1		0xE000 /* ID of channel 1 */
-
-#define SR_FE_ID_V35		0x00   /* V.35 Interface */
-#define SR_FE_ID_RS232		0x01   /* RS232 Interface */
-#define SR_FE_ID_TEST		0x02   /* Test Board */
-#define SR_FE_ID_RS422		0x03   /* RS422 Interface */
-#define SR_FE_ID_HSSI		0x05   /* HSSI Interface */
-#define SR_FE_ID_X21		0x06   /* X.21 Interface */
-#define SR_FE_ID_NONE		0x07   /* No card present */
-#define SR_FE_ID0_SHFT		   9
-#define SR_FE_ID1_SHFT		  13
-
-#endif /* _IF_SRREGS_H_ */
diff --git a/sys/pci/if_ar_p.c b/sys/pci/if_ar_p.c
deleted file mode 100644
index ad2bfa0..0000000
--- a/sys/pci/if_ar_p.c
+++ /dev/null
@@ -1,170 +0,0 @@
-/*
- * Copyright (c) 1999 - 2001 John Hay.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the author nor the names of any co-contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
- *
- * $FreeBSD$
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/malloc.h>
-#include <sys/bus.h>
-#include <machine/bus.h>
-#include <machine/resource.h>
-#include <machine/bus_pio.h>
-#include <machine/bus_memio.h>
-#include <sys/rman.h>
-
-#include <pci/pcireg.h>
-#include <pci/pcivar.h>
-
-#include <i386/isa/ic/hd64570.h>
-#include <i386/isa/if_arregs.h>
-
-#ifdef TRACE
-#define TRC(x)               x
-#else
-#define TRC(x)
-#endif
-
-#define TRCL(x)              x
-
-static int	ar_pci_probe(device_t);
-static int	ar_pci_attach(device_t);
-
-static device_method_t ar_pci_methods[] = {
-	/* Device interface */
-	DEVMETHOD(device_probe,		ar_pci_probe),
-	DEVMETHOD(device_attach,	ar_pci_attach),
-	DEVMETHOD(device_detach,	ar_detach),
-	{ 0, 0 }
-};
-
-static driver_t ar_pci_driver = {
-	"ar",
-	ar_pci_methods,
-	sizeof(struct ar_hardc),
-};
-
-DRIVER_MODULE(if_ar, pci, ar_pci_driver, ar_devclass, 0, 0);
-
-static int
-ar_pci_probe(device_t device)
-{
-	u_int32_t	type = pci_get_devid(device);
-
-	switch(type) {
-	case 0x5012114f:
-		device_set_desc(device, "Digi SYNC/570i-PCI 2 port");
-		return (0);
-		break;
-	case 0x5010114f:
-		printf("Digi SYNC/570i-PCI 2 port (mapped below 1M)\n");
-		printf("Please change the jumper to select linear mode.\n");
-		break;
-	case 0x5013114f:
-		device_set_desc(device, "Digi SYNC/570i-PCI 4 port");
-		return (0);
-		break;
-	case 0x5011114f:
-		printf("Digi SYNC/570i-PCI 4 port (mapped below 1M)\n");
-		printf("Please change the jumper to select linear mode.\n");
-		break;
-	default:
-		break;
-	}
-	return (ENXIO);
-}
-
-static int
-ar_pci_attach(device_t device)
-{
-	int error;
-	u_int i, tmp;
-	u_char *inten;
-	struct ar_hardc *hc;
-
-	hc = (struct ar_hardc *)device_get_softc(device);
-	bzero(hc, sizeof(struct ar_hardc));
-
-	error = ar_allocate_plx_memory(device, 0x10, 1);
-	if(error)
-		goto errexit;
-
-	error = ar_allocate_memory(device, 0x18, 1);
-	if(error)
-		goto errexit;
-
-	error = ar_allocate_irq(device, 0, 1);
-	if(error)
-		goto errexit;
-
-	hc->plx_mem = rman_get_virtual(hc->res_plx_memory);
-	hc->mem_start = rman_get_virtual(hc->res_memory);
-
-	hc->cunit = device_get_unit(device);
-	hc->sca[0] = (sca_regs *)(hc->mem_start + AR_PCI_SCA_1_OFFSET);
-	hc->sca[1] = (sca_regs *)(hc->mem_start + AR_PCI_SCA_2_OFFSET);
-	hc->iobase = 0;
-	hc->orbase = (u_char *)(hc->mem_start + AR_PCI_ORBASE_OFFSET);
-
-	tmp = hc->orbase[AR_BMI * 4];
-	hc->bustype = tmp & AR_BUS_MSK;
-	hc->memsize = (tmp & AR_MEM_MSK) >> AR_MEM_SHFT;
-	hc->memsize = 1 << hc->memsize;
-	hc->memsize <<= 16;
-	hc->interface[0] = (tmp & AR_IFACE_MSK);
-	tmp = hc->orbase[AR_REV * 4];
-	hc->revision = tmp & AR_REV_MSK;
-	hc->winsize = (1 << ((tmp & AR_WSIZ_MSK) >> AR_WSIZ_SHFT)) * 16 * 1024;
-	hc->mem_end = (caddr_t)(hc->mem_start + hc->winsize);
-	hc->winmsk = hc->winsize - 1;
-	hc->numports = hc->orbase[AR_PNUM * 4];
-	hc->handshake = hc->orbase[AR_HNDSH * 4];
-
-	for(i = 1; i < hc->numports; i++)
-		hc->interface[i] = hc->interface[0];
-
-	TRC(printf("arp%d: bus %x, rev %d, memstart %p, winsize %d, "
-	    "winmsk %x, interface %x\n",
-	    unit, hc->bustype, hc->revision, hc->mem_start, hc->winsize,
-	    hc->winmsk, hc->interface[0]));
-
-	ar_attach(device);
-
-	/* Magic to enable the card to generate interrupts. */
-	inten = (u_char *)hc->plx_mem;
-	inten[0x69] = 0x09;
-
-	return (0);
-
-errexit:
-	ar_deallocate_resources(device);
-	return (ENXIO);
-}
-
diff --git a/sys/pci/if_sr_p.c b/sys/pci/if_sr_p.c
deleted file mode 100644
index b8ac2cc..0000000
--- a/sys/pci/if_sr_p.c
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * Copyright (c) 1996 John Hay.
- * Copyright (c) 1996 SDL Communications, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the author nor the names of any co-contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
- *
- * $FreeBSD$
- */
-
-#ifdef COMPILING_LINT
-#warning "The sr pci driver is broken and is not compiled with LINT"
-#else
-
-#include "sr.h"
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/malloc.h>
-
-#include <pci/pcivar.h>
-
-#ifndef COMPAT_OLDPCI
-#error "The sr device requires the old pci compatibility shims"
-#endif
-
-#ifndef BUGGY
-#define BUGGY		0
-#endif
-
-/*
- * The must match with the real functions in if_sr.c
- */
-extern void *srattach_pci(int unit,
-			  vm_offset_t plx_vaddr,
-			  vm_offset_t sca_vaddr);
-extern void srintr_hc(void *hc);
-
-static const char *sr_pci_probe(pcici_t tag, pcidi_t type);
-static void sr_pci_attach(pcici_t config_id, int unit);
-
-static u_long src_count = NSR;
-
-static struct pci_device sr_pci_driver =
-{
-	"src",
-	sr_pci_probe,
-	sr_pci_attach,
-	&src_count,
-	NULL
-};
-
-COMPAT_PCI_DRIVER (sr_pci, sr_pci_driver);
-
-static const char *
-sr_pci_probe(pcici_t tag, pcidi_t type)
-{
-	switch(type) {
-	case 0x556812aa:
-		return ("RISCom/N2pci");
-		break;
-	case 0x55684778:
-	case 0x55684877:
-		/*
-		 * XXX This can probably be removed sometime.
-		 */
-		return ("RISCom/N2pci (old id)");
-		break;
-	default:
-		break;
-	}
-	return (0);
-}
-
-static void
-sr_pci_attach(pcici_t config_id, int unit)
-{
-	void *hc;
-#if BUGGY > 0
-	u_int *fecr;
-#endif
-	vm_offset_t plx_vaddr, plx_paddr, sca_vaddr, sca_paddr;
-
-#if BUGGY > 0
-	printf("srp: ID %x\n", pci_conf_read(config_id, 0));
-	printf("srp: BADR0 %x\n", pci_conf_read(config_id, 0x10));
-	printf("srp: BADR1 %x\n", pci_conf_read(config_id, 0x18));
-#endif
-	if(!pci_map_mem(config_id, 0x10, &plx_vaddr, &plx_paddr)) {
-		printf("srp: map failed.\n");
-		return;
-	}
-#if BUGGY > 0
-	printf("srp: vaddr %x, paddr %x\n", plx_vaddr, plx_paddr);
-#endif
-	if(!pci_map_mem(config_id, 0x18, &sca_vaddr, &sca_paddr)) {
-		printf("srp: map failed.\n");
-		return;
-	}
-#if BUGGY > 0
-	printf("srp: vaddr %x, paddr %x\n", sca_vaddr, sca_paddr);
-	fecr = (u_int *)(sca_vaddr + 0x200);
-	printf("srp: FECR  %x\n", *fecr);
-#endif
-
-	hc = srattach_pci(unit, plx_vaddr, sca_vaddr);
-	if(!hc)
-		return;
-
-	if(!pci_map_int(config_id, srintr_hc, (void *)hc, &net_imask)) {
-		free(hc, M_DEVBUF);
-		return;
-	}
-}
-#endif