2006-02-20 Thomas Schwinge <tschwinge@gnu.org>

Remove unused and unsupported code.  Consult the file
	`DEVELOPMENT' for details.  Partly based on suggestions by
	Gianluca Guida <glguida@gmail.com>.

	* i386/bogus/at3c501.h: Remove file.
	* i386/i386at/if_3c501.c: Likewise.
	* i386/i386at/if_3c501.h: Likewise.
	* i386/i386at/autoconf.c: Don't include <at3c501.h> anymore and adopt
	all users of NAT3C501 as if it were always defined to `0'.
	* i386/i386at/conf.c: Likewise.

4 files changed, 0 insertions, 1441 deletions

diff --git a/i386/i386at/autoconf.c b/i386/i386at/autoconf.c
index bd0cddc..50a0e6f 100644
--- a/i386/i386at/autoconf.c
+++ b/i386/i386at/autoconf.c
@@ -59,12 +59,6 @@ extern struct	bus_driver	eaha_driver;
 extern int	eaha_intr();
 #endif /* NEAHA */
 
-#include <at3c501.h>
-#if NAT3C501 > 0
-extern struct	bus_driver	at3c501driver;
-extern int			at3c501intr();
-#endif /* NAT3C501 */
-
 #include <ul.h>
 #if NUL > 0
 extern struct  bus_driver      uldriver;
@@ -245,11 +239,6 @@ struct	bus_device	bus_device_init[] = {
 { &eaha_driver,	"tz",   7,  0,  0x0,0,	0,    '?',     0,   0,   7,    0, },
 #endif	/* NEAHA > 0*/
 
-#if NAT3C501 > 0
-  {&at3c501driver, "et", 0, at3c501intr, 0x300, 0,0x300,
-     '?',    0,   -1,    -1,    0,   0,        0,   SPL_SIX, 9},
-#endif /* NAT3C501 > 0 */
-
 #if NUL > 0
   {&uldriver, "ul",  0, ulintr, 0, 0, 0, '?', 0, -1, -1, 0, 0, 0, SPL_SIX, 0},
   {&uldriver, "ul",  1, ulintr, 0, 0, 0, '?', 0, -1, -1, 0, 0, 0, SPL_SIX, 0},
diff --git a/i386/i386at/conf.c b/i386/i386at/conf.c
index 446744b..e718b7d 100644
--- a/i386/i386at/conf.c
+++ b/i386/i386at/conf.c
@@ -54,14 +54,6 @@ extern int	wtopen(), wtread(), wtwrite(), wtclose();
 #define	wtname			"wt"
 #endif	/* NWT > 0 */
 
-#include <at3c501.h>
-#if	NAT3C501 > 0
-extern int	at3c501open(), at3c501output(),
-		at3c501getstat(), at3c501setstat(),
-		at3c501setinput();
-#define	at3c501name		"et"
-#endif /* NAT3C501 > 0 */
-
 #include <ul.h>
 #if NUL > 0
 extern int    ulopen(), uloutput(), ulgetstat(), ulsetstat(),
@@ -199,13 +191,6 @@ struct dev_ops	dev_name_list[] =
 	  nodev },
 #endif	/* NWT > 0 */
 
-#if	NAT3C501 > 0
-	{ at3c501name,	at3c501open,	nulldev,	nulldev,
-	  at3c501output,at3c501getstat,	at3c501setstat,	nomap,
-	  at3c501setinput, nulldev,	nulldev, 	0,
-	  nodev },
-#endif
-
 #if   	NUL > 0
         { ulname,       ulopen,         nulldev,        nulldev,
           uloutput,     ulgetstat,      ulsetstat,      nulldev,
diff --git a/i386/i386at/if_3c501.c b/i386/i386at/if_3c501.c
deleted file mode 100644
index b822d27..0000000
--- a/i386/i386at/if_3c501.c
+++ /dev/null
@@ -1,1240 +0,0 @@
-/* 
- * Mach Operating System
- * Copyright (c) 1991,1990,1989 Carnegie Mellon University
- * All Rights Reserved.
- * 
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- * 
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- * 
- * Carnegie Mellon requests users of this software to return to
- * 
- *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
- *  School of Computer Science
- *  Carnegie Mellon University
- *  Pittsburgh PA 15213-3890
- * 
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
-/*
- *	File:	if_3c501.c
- *	Author: Philippe Bernadat
- *	Date:	1989
- * 	Copyright (c) 1989 OSF Research Institute 
- *
- * 	3COM Etherlink 3C501 Mach Ethernet drvier
- */
-/*
-  Copyright 1990 by Open Software Foundation,
-Cambridge, MA.
-
-		All Rights Reserved
-
-  Permission to use, copy, modify, and distribute this software and
-its documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appears in all copies and
-that both the copyright notice and this permission notice appear in
-supporting documentation, and that the name of OSF or Open Software
-Foundation not be used in advertising or publicity pertaining to
-distribution of the software without specific, written prior
-permission.
-
-  OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
-IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
-NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-#include <at3c501.h>
-
-#ifdef	MACH_KERNEL
-#include	<kern/time_out.h>
-#include	<device/device_types.h>
-#include	<device/errno.h>
-#include	<device/io_req.h>
-#include	<device/if_hdr.h>
-#include	<device/if_ether.h>
-#include	<device/net_status.h>
-#include	<device/net_io.h>
-#else	MACH_KERNEL
-#include	<sys/param.h>
-#include	<mach/machine/vm_param.h>
-#include	<sys/systm.h>
-#include	<sys/mbuf.h>
-#include	<sys/buf.h>
-#include	<sys/protosw.h>
-#include	<sys/socket.h>
-#include	<sys/vmmac.h>
-#include	<sys/ioctl.h>
-#include	<sys/errno.h>
-#include	<sys/syslog.h>
-
-#include	<net/if.h>
-#include	<net/netisr.h>
-#include	<net/route.h>
-
-#ifdef	INET
-#include	<netinet/in.h>
-#include	<netinet/in_systm.h>
-#include	<netinet/in_var.h>
-#include	<netinet/ip.h>
-#include	<netinet/if_ether.h>
-#endif
-
-#ifdef	NS
-#include	<netns/ns.h>
-#include	<netns/ns_if.h>
-#endif
-#endif	MACH_KERNEL
-
-#include	<i386/ipl.h>
-#include	<chips/busses.h>
-#include	<i386at/if_3c501.h>
-
-#define	SPLNET	spl6
-
-int	at3c501probe();
-void	at3c501attach();
-int	at3c501intr();
-int	at3c501init();
-int	at3c501output();
-int	at3c501ioctl();
-int	at3c501reset();
-int	at3c501watch();
-
-static vm_offset_t at3c501_std[NAT3C501] = { 0 };
-static struct bus_device *at3c501_info[NAT3C501];
-struct	bus_driver	at3c501driver = 
-	{at3c501probe, 0, at3c501attach, 0, at3c501_std, "et", at3c501_info, };
-
-int	watchdog_id;
-
-typedef struct { 
-#ifdef	MACH_KERNEL
-	struct	ifnet	ds_if;		/* generic interface header */
-	u_char	ds_addr[6];		/* Ethernet hardware address */
-#else	MACH_KERNEL
-	struct	arpcom	at3c501_ac;
-#define	ds_if	at3c501_ac.ac_if
-#define	ds_addr	at3c501_ac.ac_enaddr
-#endif	MACH_KERNEL
-	int	flags;
-        int     timer;
-	char 	*base;
-        u_char   address[ETHER_ADD_SIZE];
-	short	mode;
-	int	badxmt;
-	int	badrcv;
-	int	spurious;
-	int	rcv;
-	int	xmt;
-} at3c501_softc_t;
-
-at3c501_softc_t	at3c501_softc[NAT3C501];
-
-/*
- * at3c501probe:
- *
- *	This function "probes" or checks for the 3c501 board on the bus to see
- *	if it is there.  As far as I can tell, the best break between this
- *	routine and the attach code is to simply determine whether the board
- *	is configured in properly.  Currently my approach to this is to write
- *	and read a string from the Packet Buffer on the board being probed.
- *	If the string comes back properly then we assume the board is there.
- *	The config code expects to see a successful return from the probe
- *	routine before 	attach will be called.
- *
- * input	: address device is mapped to, and unit # being checked
- * output	: a '1' is returned if the board exists, and a 0 otherwise
- *
- */
-at3c501probe(port, dev)
-struct bus_device	*dev;
-{
-	caddr_t		base = (caddr_t)dev->address;
-	int		unit = dev->unit;
-	char		inbuf[50];
-	char		*str = "3c501 ethernet board %d out of range\n";
-	int 		strsize = strlen(str);
-
-	if ((unit < 0) || (unit >= NAT3C501)) {
-		printf(str, unit);
-		return(0);
-	}
-
-	/* reset */
-	outb(IE_CSR(base), IE_RESET);
-
-	/* write a string to the packet buffer */
-
-	outb(IE_CSR(base), IE_RIDE | IE_SYSBFR);
-	outw(IE_GP(base), 0);
-	loutb(IE_BFR(base), str, strsize);
-
-	/* read it back */
-
-	outb(IE_CSR(base), IE_RIDE | IE_SYSBFR);
-	outw(IE_GP(base), 0);
-	linb(IE_BFR(base), inbuf, strsize);
-	/* compare them */
-
-#ifdef	MACH_KERNEL
-	if (strncmp(str, inbuf, strsize))
-#else	MACH_KERNEL
-	if (bcmp(str, inbuf, strsize))
-#endif	MACH_KERNEL
-	{
-		return(0);
-	}
-	at3c501_softc[unit].base = base;
-
-	return(1);
-}
-
-/*
- * at3c501attach:
- *
- *	This function attaches a 3C501 board to the "system".  The rest of
- *	runtime structures are initialized here (this routine is called after
- *	a successful probe of the board).  Once the ethernet address is read
- *	and stored, the board's ifnet structure is attached and readied.
- *
- * input	: bus_device structure setup in autoconfig
- * output	: board structs and ifnet is setup
- *
- */
-void at3c501attach(dev)
-struct bus_device	*dev;
-{
-	at3c501_softc_t	*sp;
-	struct	ifnet	*ifp;
-	u_char	unit;
-	caddr_t		base;
-#ifdef	MACH_KERNEL
-#else	MACH_KERNEL
-	extern int	tcp_recvspace;
-	tcp_recvspace = 0x300;		/* empircal messure */
-#endif	MACH_KERNEL
-
-	take_dev_irq(dev);
-	unit = (u_char)dev->unit;	
-	printf(", port = %x, spl = %d, pic = %d. ",
-		dev->address, dev->sysdep, dev->sysdep1);
-
-	sp = &at3c501_softc[unit];
-	base = sp->base;
-	if (base != (caddr_t)dev->address) {
-		printf("3C501 board %d attach address error\n", unit);
-		return;
-	}
-	sp->timer = -1;
-	sp->flags = 0;
-	sp->mode = 0;
-	outb(IE_CSR(sp->base), IE_RESET);
-	at3c501geteh(base, sp->ds_addr);
-	at3c501geteh(base, sp->address);
-	at3c501seteh(base, sp->address);
-	printf("ethernet id [%x:%x:%x:%x:%x:%x]",
-		sp->address[0],sp->address[1],sp->address[2], 
-		sp->address[3],sp->address[4],sp->address[5]);
-	ifp = &(sp->ds_if);
-	ifp->if_unit = unit;
-	ifp->if_mtu = ETHERMTU;
-	ifp->if_flags = IFF_BROADCAST;
-#ifdef	MACH_KERNEL
-	ifp->if_header_size = sizeof(struct ether_header);
-	ifp->if_header_format = HDR_ETHERNET;
-	ifp->if_address_size = 6;
-	ifp->if_address = (char *)&sp->address[0];
-	if_init_queues(ifp);
-#else	MACH_KERNEL
-	ifp->if_name = "et";
-	ifp->if_init = at3c501init;
-	ifp->if_output = at3c501output;
-	ifp->if_ioctl = at3c501ioctl;
-	ifp->if_reset = at3c501reset;
-	ifp->if_next = NULL;
-	if_attach(ifp);
-#ifdef notdef
-	watchdog_id = timeout(at3c501watch, &(ifp->if_unit), 20*HZ);
-#endif
-#endif	MACH_KERNEL
-}
-
-/*
- * at3c501watch():
- *
- */
-at3c501watch(b_ptr)
-
-caddr_t	b_ptr;
-
-{
-	int	x,
-		y,
-		opri,
-		unit;
-	at3c501_softc_t *is;
-
-	unit = *b_ptr;
-#ifdef	MACH_KERNEL
-	timeout(at3c501watch,b_ptr,20*hz);
-#else	MACH_KERNEL
-	watchdog_id = timeout(at3c501watch,b_ptr,20*HZ);
-#endif	MACH_KERNEL
-	is = &at3c501_softc[unit];
-	printf("\nxmt/bad	rcv/bad	spurious\n");
-	printf("%d/%d		%d/%d	%d\n", is->xmt, is->badxmt, \
-		is->rcv, is->badrcv, is->spurious);
-	is->rcv=is->badrcv=is->xmt=is->badxmt=is->spurious=0;
-}
-
-/*
- * at3c501geteh:
- *
- *	This function gets the ethernet address (array of 6 unsigned
- *	bytes) from the 3c501 board prom. 
- *
- */
-
-at3c501geteh(base, ep)
-caddr_t	base;
-char *ep;
-{
-	int	i;
-
-	for (i = 0; i < ETHER_ADD_SIZE; i++) {
-		outw(IE_GP(base), i);
-		*ep++ = inb(IE_SAPROM(base));
-	}
-}
-
-/*
- * at3c501seteh:
- *
- *	This function sets the ethernet address (array of 6 unsigned
- *	bytes) on the 3c501 board. 
- *
- */
-
-at3c501seteh(base, ep)
-caddr_t	base;
-char *ep;
-{
-	int	i;
-
-	for (i = 0; i < ETHER_ADD_SIZE; i++) {
-		outb(EDLC_ADDR(base) + i, *ep++);
-	}
-}
-
-#ifdef	MACH_KERNEL
-int at3c501start();	/* forward */
-
-at3c501output(dev, ior)
-	dev_t		dev;
-	io_req_t	ior;
-{
-	register int	unit = minor(dev);
-
-	if (unit < 0 || unit >= NAT3C501 ||
-		at3c501_softc[unit].base == 0)
-	    return (ENXIO);
-
-	return (net_write(&at3c501_softc[unit].ds_if, at3c501start, ior));
-}
-
-at3c501setinput(dev, receive_port, priority, filter, filter_count)
-	dev_t		dev;
-	mach_port_t	receive_port;
-	int		priority;
-	filter_t	filter[];
-	u_int		filter_count;
-{
-	register int unit = minor(dev);
-
-	if (unit < 0 || unit >= NAT3C501 ||
-		at3c501_softc[unit].base == 0)
-	    return (ENXIO);
-
-	return (net_set_filter(&at3c501_softc[unit].ds_if,
-			receive_port, priority,
-			filter, filter_count));
-}
-
-#else	MACH_KERNEL
-/*
- * at3c501output:
- *
- *	This routine is called by the "if" layer to output a packet to
- *	the network.  This code resolves the local ethernet address, and
- *	puts it into the mbuf if there is room.  If not, then a new mbuf
- *	is allocated with the header information and precedes the data
- *	to be transmitted.
- *
- * input:	ifnet structure pointer, an mbuf with data, and address
- *		to be resolved
- * output:	mbuf is updated to hold enet address, or a new mbuf
- *	  	with the address is added
- *
- */
-at3c501output(ifp, m0, dst)
-struct ifnet	*ifp;
-struct mbuf	*m0;
-struct sockaddr *dst;
-{
-	int 				type, error;
-	spl_t				opri;
- 	u_char				edst[6];
-	struct in_addr 			idst;
-	register at3c501_softc_t 	*is;
-	register struct mbuf 		*m = m0;
-	register struct ether_header	*eh;
-	register int			 off;
-	int				usetrailers;
-
-	is = &at3c501_softc[ifp->if_unit];
-	if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) {
-		printf("3C501 Turning off board %d\n", ifp->if_unit);
-		at3c501intoff(ifp->if_unit);
-		error = ENETDOWN;
-		goto bad;
-	}
-	switch (dst->sa_family) {
-
-#ifdef INET
-	case AF_INET:
-		idst = ((struct sockaddr_in *)dst)->sin_addr;
- 		if (!arpresolve(&is->at3c501_ac, m, &idst, edst, &usetrailers)){
-			return (0);	/* if not yet resolved */
-		}
-		off = ntohs((u_short)mtod(m, struct ip *)->ip_len) - m->m_len;
-
-		if (usetrailers && off > 0 && (off & 0x1ff) == 0 &&
-		    m->m_off >= MMINOFF + 2 * sizeof (u_short)) {
-			type = ETHERTYPE_TRAIL + (off>>9);
-			m->m_off -= 2 * sizeof (u_short);
-			m->m_len += 2 * sizeof (u_short);
-			*mtod(m, u_short *) = htons((u_short)ETHERTYPE_IP);
-			*(mtod(m, u_short *) + 1) = htons((u_short)m->m_len);
-			goto gottrailertype;
-		}
-		type = ETHERTYPE_IP;
-		off = 0;
-		goto gottype;
-#endif
-#ifdef NS
-	case AF_NS:
-		type = ETHERTYPE_NS;
- 		bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
-		(caddr_t)edst, sizeof (edst));
-		off = 0;
-		goto gottype;
-#endif
-
-	case AF_UNSPEC:
-		eh = (struct ether_header *)dst->sa_data;
- 		bcopy((caddr_t)eh->ether_dhost, (caddr_t)edst, sizeof (edst));
-		type = eh->ether_type;
-		goto gottype;
-
-	default:
-		printf("at3c501%d: can't handle af%d\n", ifp->if_unit,
-			dst->sa_family);
-		error = EAFNOSUPPORT;
-		goto bad;
-	}
-
-gottrailertype:
-	/*
-	 * Packet to be sent as trailer: move first packet
-	 * (control information) to end of chain.
-	 */
-	while (m->m_next)
-		m = m->m_next;
-	m->m_next = m0;
-	m = m0->m_next;
-	m0->m_next = 0;
-	m0 = m;
-
-gottype:
-	/*
-	 * Add local net header.  If no space in first mbuf,
-	 * allocate another.
-	 */
-	if (m->m_off > MMAXOFF ||
-	    MMINOFF + sizeof (struct ether_header) > m->m_off) {
-		m = m_get(M_DONTWAIT, MT_HEADER);
-		if (m == 0) {
-			error = ENOBUFS;
-			goto bad;
-		}
-		m->m_next = m0;
-		m->m_off = MMINOFF;
-		m->m_len = sizeof (struct ether_header);
-	} else {
-		m->m_off -= sizeof (struct ether_header);
-		m->m_len += sizeof (struct ether_header);
-	}
-	eh = mtod(m, struct ether_header *);
-	eh->ether_type = htons((u_short)type);
- 	bcopy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst));
- 	bcopy((caddr_t)is->address,(caddr_t)eh->ether_shost,
-								sizeof(edst));
-	/*
-	 * Queue message on interface, and start output if interface
-	 * not yet active.
-	 */
-	opri = SPLNET();
-	if (IF_QFULL(&ifp->if_snd)) {
-		IF_DROP(&ifp->if_snd);
-		splx(opri);
-		m_freem(m);
-		return (ENOBUFS);
-	}
-	IF_ENQUEUE(&ifp->if_snd, m);
-	/*
- 	 * Some action needs to be added here for checking whether the
-	 * board is already transmitting.  If it is, we don't want to
- 	 * start it up (ie call at3c501start()).  We will attempt to send
- 	 * packets that are queued up after an interrupt occurs.  Some
- 	 * flag checking action has to happen here and/or in the start
- 	 * routine.  This note is here to remind me that some thought
- 	 * is needed and there is a potential problem here.
-	 *
-	 */
-	at3c501start(ifp->if_unit);
-	splx(opri);
-	return (0);
-
-bad:
-	m_freem(m0);
-	return (error);
-}
-#endif	MACH_KERNEL
-
-/*
- * at3c501reset:
- *
- *	This routine is in part an entry point for the "if" code.  Since most 
- *	of the actual initialization has already (we hope already) been done
- *	by calling at3c501attach().
- *
- * input	: unit number or board number to reset
- * output	: board is reset
- *
- */
-at3c501reset(unit)
-int	unit;
-{
-	at3c501_softc[unit].ds_if.if_flags &= ~IFF_RUNNING;
-	return(at3c501init(unit));
-}
-
-
-
-/*
- * at3c501init:
- *
- *	Another routine that interfaces the "if" layer to this driver.  
- *	Simply resets the structures that are used by "upper layers".  
- *	As well as calling at3c501hwrst that does reset the at3c501 board.
- *
- * input	: board number
- * output	: structures (if structs) and board are reset
- *
- */	
-at3c501init(unit)
-int	unit;
-{
-	struct	ifnet	*ifp;
-	int		stat;
-	spl_t		oldpri;
-
-	ifp = &(at3c501_softc[unit].ds_if);
-#ifdef	MACH_KERNEL
-#else	MACH_KERNEL
-	if (ifp->if_addrlist == (struct ifaddr *)0) {
-		return;
-	}
-#endif	MACH_KERNEL
-	oldpri = SPLNET();
-	if ((stat = at3c501hwrst(unit)) == TRUE) {
-		at3c501_softc[unit].ds_if.if_flags |= IFF_RUNNING;
-		at3c501_softc[unit].flags |= DSF_RUNNING;
-		at3c501start(unit);
-	}
-	else
-		printf("3C501 trouble resetting board %d\n", unit);
-	at3c501_softc[unit].timer = 5;
-	splx(oldpri);
-	return(stat);
-
-}
-
-#ifdef	MACH_KERNEL
-/*ARGSUSED*/
-at3c501open(dev, flag)
-	dev_t	dev;
-	int	flag;
-{
-	register int	unit = minor(dev);
-
-	if (unit < 0 || unit >= NAT3C501 ||
-		at3c501_softc[unit].base == 0)
-	    return (ENXIO);
-
-	at3c501_softc[unit].ds_if.if_flags |= IFF_UP;
-	at3c501init(unit);
-	return(0);
-}
-#endif	MACH_KERNEL
-
-/*
- * at3c501start:
- *
- *	This is yet another interface routine that simply tries to output a
- *	in an mbuf after a reset.
- *
- * input	: board number
- * output	: stuff sent to board if any there
- *
- */
-at3c501start(unit)
-int	unit;
-
-{
-#ifdef	MACH_KERNEL
-	io_req_t	m;
-#else	MACH_KERNEL
-	struct	mbuf	*m;
-#endif	MACH_KERNEL
-	struct	ifnet	*ifp;
-
-	ifp = &(at3c501_softc[unit].ds_if);
-	for(;;) {
-		IF_DEQUEUE(&ifp->if_snd, m);
-#ifdef	MACH_KERNEL
-		if (m != 0)
-#else	MACH_KERNEL
-		if (m != (struct mbuf *)0)
-#endif	MACH_KERNEL
-			at3c501xmt(unit, m);
-		else
-			return;
-	}
-}
-
-#ifdef	MACH_KERNEL
-/*ARGSUSED*/
-at3c501getstat(dev, flavor, status, count)
-	dev_t		dev;
-	int		flavor;
-	dev_status_t	status;		/* pointer to OUT array */
-	u_int		*count;		/* out */
-{
-	register int	unit = minor(dev);
-
-	if (unit < 0 || unit >= NAT3C501 ||
-		at3c501_softc[unit].base == 0)
-	    return (ENXIO);
-
-	return (net_getstat(&at3c501_softc[unit].ds_if,
-			    flavor,
-			    status,
-			    count));
-}
-
-at3c501setstat(dev, flavor, status, count)
-	dev_t		dev;
-	int		flavor;
-	dev_status_t	status;
-	u_int		count;
-{
-	register int	unit = minor(dev);
-	register at3c501_softc_t *sp;
-
-	if (unit < 0 || unit >= NAT3C501 ||
-		at3c501_softc[unit].base == 0)
-	    return (ENXIO);
-
-	sp = &at3c501_softc[unit];
-
-	switch (flavor) {
-	    case NET_STATUS:
-	    {
-		/*
-		 * All we can change are flags, and not many of those.
-		 */
-		register struct net_status *ns = (struct net_status *)status;
-		int	mode = 0;
-
-		if (count < NET_STATUS_COUNT)
-		    return (D_INVALID_SIZE);
-
-		if (ns->flags & IFF_ALLMULTI)
-		    mode |= MOD_ENAL;
-		if (ns->flags & IFF_PROMISC)
-		    mode |= MOD_PROM;
-
-		/*
-		 * Force a compilete reset if the receive mode changes
-		 * so that these take effect immediately.
-		 */
-		if (sp->mode != mode) {
-		    sp->mode = mode;
-		    if (sp->flags & DSF_RUNNING) {
-			sp->flags &= ~(DSF_LOCK | DSF_RUNNING);
-			at3c501init(unit);
-		    }
-		}
-		break;
-	    }
-	    case NET_ADDRESS:
-	    {
-		register union ether_cvt {
-		    char	addr[6];
-		    int		lwd[2];
-		} *ec = (union ether_cvt *)status;
-
-		if (count < sizeof(*ec)/sizeof(int))
-		    return (D_INVALID_SIZE);
-
-		ec->lwd[0] = ntohl(ec->lwd[0]);
-		ec->lwd[1] = ntohl(ec->lwd[1]);
-   		at3c501seteh(sp->base, ec->addr);
-		break;
-	    }
-
-	    default:
-		return (D_INVALID_OPERATION);
-	}
-	return (D_SUCCESS);
-}
-#else	MACH_KERNEL
-
-/*
- * at3c501ioctl:
- *
- *	This routine processes an ioctl request from the "if" layer
- *	above.
- *
- * input	: pointer the appropriate "if" struct, command, and data
- * output	: based on command appropriate action is taken on the
- *	 	  at3c501 board(s) or related structures
- * return	: error is returned containing exit conditions
- *
- */
-int		curr_ipl;
-u_short	curr_pic_mask;
-u_short 	pic_mask[];
-
-at3c501ioctl(ifp, cmd, data)
-struct ifnet	*ifp;
-int	cmd;
-caddr_t	data;
-{
-	register struct ifaddr		*ifa = (struct ifaddr *)data;
-	register at3c501_softc_t 	*is;
-	int 				error;
-	spl_t				opri;
-	short 				mode = 0;
-
-	is = &at3c501_softc[ifp->if_unit];
- 	opri = SPLNET();
-	error = 0;
-	switch (cmd) {
-		case SIOCSIFADDR:
-			ifp->if_flags |= IFF_UP;
-			at3c501init(ifp->if_unit);
-			switch (ifa->ifa_addr.sa_family) {
-#ifdef INET
-				case AF_INET:
-					((struct arpcom *)ifp)->ac_ipaddr =
-						IA_SIN(ifa)->sin_addr;
-					arpwhohas((struct arpcom *)ifp, 
-						  &IA_SIN(ifa)->sin_addr);
-					break;
-#endif
-#ifdef NS
-				case AF_NS:
-		    			{
-					register struct ns_addr *ina = 
-					&(IA_SNS(ifa)->sns_addr);
-					if (ns_nullhost(*ina))
-						ina->x_host = 
-						*(union ns_host *)(ds->ds_addr);
-					else
-						at3c501seteh(ina->x_host.c_host,
-						at3c501_softc[ifp->if_unit].base);
-					break;
-		    			}
-#endif
-			}
-			break;
-		case SIOCSIFFLAGS:
-			if (ifp->if_flags & IFF_ALLMULTI)
-				mode |= MOD_ENAL;
-			if (ifp->if_flags & IFF_PROMISC)
-				mode |= MOD_PROM;
-			/*
-			 * force a complete reset if the receive multicast/
-			 * promiscuous mode changes so that these take 
-			 * effect immediately.
-			 *
-			 */
-			if (is->mode != mode) {
-				is->mode = mode;
-				if (is->flags & DSF_RUNNING) {
-			    		is->flags &=
-						~(DSF_LOCK|DSF_RUNNING);
-					at3c501init(ifp->if_unit);
-				}
-			}
-			if ((ifp->if_flags & IFF_UP) == 0 &&
-		    	    is->flags & DSF_RUNNING) {
-				printf("AT3C501 ioctl: turning off board %d\n", 
-				       ifp->if_unit);
-				is->flags &= ~(DSF_LOCK | DSF_RUNNING);
-				is->timer = -1;
-				at3c501intoff(ifp->if_unit);
-			} else 
-			if (ifp->if_flags & IFF_UP &&
-		    	    (is->flags & DSF_RUNNING) == 0)
-				at3c501init(ifp->if_unit);
-			break;
-	default:
-		error = EINVAL;
-	}
-	splx(opri);
-	return (error);
-}
-#endif	MACH_KERNEL
-
-
-/*
- * at3c501hwrst:
- *
- *	This routine resets the at3c501 board that corresponds to the 
- *	board number passed in.
- *
- * input	: board number to do a hardware reset
- * output	: board is reset
- *
- */
-#define XMT_STAT (EDLC_16|EDLC_JAM|EDLC_UNDER|EDLC_IDLE)
-#define RCV_STAT (EDLC_STALE|EDLC_ANY|EDLC_SHORT|EDLC_DRIBBLE|EDLC_OVER|EDLC_FCS)
-int 
-at3c501hwrst(unit)
-int unit;
-{
-	u_char	stat;
-	caddr_t	base = at3c501_softc[unit].base;
-
-	outb(IE_CSR(base), IE_RESET);
-	outb(IE_CSR(base), 0);
-	at3c501seteh(base, at3c501_softc[unit].address);
-	if ((stat = inb(IE_CSR(base))) != IE_RESET) {
-		printf("at3c501reset: can't reset CSR: %x\n", stat);
-		return(FALSE);
-	}
-	if ((stat = inb(EDLC_XMT(base))) & XMT_STAT) {
-		printf("at3c501reset: can't reset XMT: %x\n", stat);
-		return(FALSE);
-	}
-	if (((stat = inb(EDLC_RCV(base))) & RCV_STAT) != EDLC_STALE) {
-		printf("at3c501reset: can't reset RCV: %x\n", stat);
-		return(FALSE);
-	}
-	if (at3c501config(unit) == FALSE) {
-		printf("at3c501hwrst(): failed to config\n");
-		return(FALSE);
-	}
-	outb(IE_RP(base), 0);
-	outb(IE_CSR(base), IE_RIDE|IE_RCVEDLC);
-	return(TRUE);
-}
-
-/*
- * at3c501intr:
- *
- *	This function is the interrupt handler for the at3c501 ethernet
- *	board.  This routine will be called whenever either a packet
- *	is received, or a packet has successfully been transfered and
- *	the unit is ready to transmit another packet.
- *
- * input	: board number that interrupted
- * output	: either a packet is received, or a packet is transfered
- *
- */
-at3c501intr(unit)
-int unit;
-{
-	at3c501rcv(unit);
-	at3c501start(unit);
-
-	return(0);
-}
-
-
-/*
- * at3c501rcv:
- *
- *	This routine is called by the interrupt handler to initiate a
- *	packet transfer from the board to the "if" layer above this
- *	driver.  This routine checks if a buffer has been successfully
- *	received by the at3c501.  If so, the routine at3c501read is called
- *	to do the actual transfer of the board data (including the
- *	ethernet header) into a packet (consisting of an mbuf chain).
- *
- * input	: number of the board to check
- * output	: if a packet is available, it is "sent up"
- *
- */
-at3c501rcv(unit)
-int	unit;
-{
-	int stat;
-	caddr_t base;
-#ifdef	MACH_KERNEL
-	ipc_kmsg_t	new_kmsg;
-	struct ether_header *ehp;
-	struct packet_header *pkt;
-#else	MACH_KERNEL
-    	struct	mbuf	*m,	*tm;
-#endif	MACH_KERNEL
-	u_short	len;
-	register struct ifnet *ifp;
-	struct ether_header header;
-	int	tlen;
-	register at3c501_softc_t	*is;
-	register struct	ifqueue		*inq;
-	spl_t	opri;
-	struct	ether_header eh;
-
-	is = &at3c501_softc[unit];
-	ifp = &is->ds_if;
-	base = at3c501_softc[unit].base;
-	is->rcv++;
-	if (inb(IE_CSR(base)) & IE_RCVBSY)
-		is->spurious++;
-	while (!((stat=inb(EDLC_RCV(base))) & EDLC_STALE)) {
-		outb(IE_CSR(base), IE_SYSBFR);
-		if (!(stat & EDLC_ANY)) {
-			outw(IE_GP(base), 0);
-			len = inw(IE_RP(base))-sizeof(struct ether_header);
-			outb(IE_RP(base), 0);
-			outb(IE_CSR(base), IE_RIDE|IE_RCVEDLC);
-			is->badrcv++;
-#ifdef DEBUG
-			printf("at3c501rcv: received %d bad bytes", len);
-			if (stat & EDLC_SHORT)
-				printf(" Short frame");
-			if (stat & EDLC_OVER) 
-				printf(" Data overflow");
-			if (stat & EDLC_DRIBBLE)
-				printf(" Dribble error");
-			if (stat & EDLC_FCS)
-				printf(" CRC error");
-			printf("\n");
-#endif DEBUG
-		} else {
-			outw(IE_GP(base), 0);
-			len = inw(IE_RP(base));
-			if (len < 60) {
-				outb(IE_RP(base), 0);
-				outb(IE_CSR(base), IE_RIDE|IE_RCVEDLC);
-				return;
-			}
-			linb(IE_BFR(base), &eh, sizeof(struct ether_header));
-#ifdef	MACH_KERNEL
-			new_kmsg = net_kmsg_get();
-			if (new_kmsg == IKM_NULL) {
-			    /*
-			     * Drop the packet.
-			     */
-			    is->ds_if.if_rcvdrops++;
-
-			    outb(IE_RP(base), 0);
-			    outb(IE_CSR(base), IE_RIDE|IE_RCVEDLC);
-			    return;
-			}
-
-			ehp = (struct ether_header *)
-				(&net_kmsg(new_kmsg)->header[0]);
-			pkt = (struct packet_header *)
-				(&net_kmsg(new_kmsg)->packet[0]);
-
-			/*
-			 * Get header.
-			 */
-			*ehp = eh;
-
-			/*
-			 * Get body
-			 */
-			linb(IE_BFR(base),
-			     (char *)(pkt + 1),
-			     len - sizeof(struct ether_header));
-
-			outb(IE_RP(base), 0);
-			outb(IE_CSR(base), IE_RIDE|IE_RCVEDLC);
-
-			pkt->type = ehp->ether_type;
-			pkt->length = len - sizeof(struct ether_header)
-					  + sizeof(struct packet_header);
-
-			/*
-			 * Hand the packet to the network module.
-			 */
-			net_packet(ifp, new_kmsg, pkt->length,
-				   ethernet_priority(new_kmsg));
-
-#else	MACH_KERNEL
-			eh.ether_type = htons(eh.ether_type);
-			m =(struct mbuf *)0;
-#ifdef DEBUG
-			printf("received %d bytes\n", len);
-#endif DEBUG
-			len -= sizeof(struct ether_header);
-			while ( len ) {
-				if (m == (struct mbuf *)0) {
-					m = m_get(M_DONTWAIT, MT_DATA);
-					if (m == (struct mbuf *)0) {
-						printf("at3c501rcv: Lost frame\n");
-						outb(IE_RP(base), 0);
-						outb(IE_CSR(base), IE_RIDE|IE_RCVEDLC);
-
-						return;
-					}
-					tm = m;
-					tm->m_off = MMINOFF;
-			/*
-			 * first mbuf in the packet must contain a pointer to the
-			 * ifnet structure.  other mbufs that follow and make up
-			 * the packet do not need this pointer in the mbuf.
-		 	 *
-		 	 */
-					*(mtod(tm, struct ifnet **)) = ifp;
-					tm->m_len = sizeof(struct ifnet **);
-				}
-				else {
-					tm->m_next = m_get(M_DONTWAIT, MT_DATA);
-					tm = tm->m_next;
-					tm->m_off = MMINOFF;
-					tm->m_len = 0;
-					if (tm == (struct mbuf *)0) {
-						m_freem(m);
-						printf("at3c501rcv: No mbufs, lost frame\n");
-						outb(IE_RP(base), 0);
-						outb(IE_CSR(base), IE_RIDE|IE_RCVEDLC);
-						return;
-					}
-				}
-				tlen = MIN( MLEN - tm->m_len, len );
-				tm->m_next = (struct mbuf *)0;
-				linb(IE_BFR(base), mtod(tm, char *)+tm->m_len, tlen );
-				tm->m_len += tlen;
-				len -= tlen;
-			}
-			outb(IE_RP(base), 0);
-			outb(IE_CSR(base), IE_RIDE|IE_RCVEDLC);
-			/*
-			 * received packet is now in a chain of mbuf's.  next step is
-			 * to pass the packet upwards.
-			 *
-			 */
-			switch (eh.ether_type) {
-#ifdef INET
-				case ETHERTYPE_IP:
-					schednetisr(NETISR_IP);
-					inq = &ipintrq;
-					break;
-				case ETHERTYPE_ARP:
-					arpinput(&is->at3c501_ac, m);
-					return;
-#endif
-#ifdef NS
-				case ETHERTYPE_NS:
-					schednetisr(NETISR_NS);
-					inq = &nsintrq;
-					break;
-#endif
-				default:
-					m_freem(m);
-					return;
-			}
-			opri = SPLNET();
-			if (IF_QFULL(inq)) {
-				IF_DROP(inq);
-				splx(opri);
-				m_freem(m);
-				return;
-			}
-			IF_ENQUEUE(inq, m);
-			splx(opri);
-#endif	MACH_KERNEL
-		}
-	}
-}
-
-
-/*
- * at3c501xmt:
- *
- *	This routine fills in the appropriate registers and memory
- *	locations on the 3C501 board and starts the board off on
- *	the transmit.
- *
- * input	: board number of interest, and a pointer to the mbuf
- * output	: board memory and registers are set for xfer and attention
- *
- */
-at3c501xmt(unit, m)
-int	unit;
-#ifdef	MACH_KERNEL
-io_req_t	m;
-#else	MACH_KERNEL
-struct	mbuf	*m;
-#endif	MACH_KERNEL
-{
-#ifdef	MACH_KERNEL
-#else	MACH_KERNEL
-	register struct	mbuf	*tm_p;
-#endif	MACH_KERNEL
-	int			i;
-	at3c501_softc_t		*is = &at3c501_softc[unit];
-	caddr_t			base = is->base;
-	u_short			count = 0;
-	u_short			bytes_in_msg;
-
-	is->xmt++;
-	outb(IE_CSR(base), IE_SYSBFR);
-#ifdef	MACH_KERNEL
-	count = m->io_count;
-#define	max(a,b)	(((a) > (b)) ? (a) : (b))
-	bytes_in_msg = max(count,
-			   ETHERMIN + sizeof(struct ether_header));
-#else	MACH_KERNEL
-	bytes_in_msg = max(m_length(m), ETHERMIN + sizeof(struct ether_header));
-#endif	MACH_KERNEL
-	outw(IE_GP(base), BFRSIZ-bytes_in_msg);
-#ifdef	MACH_KERNEL
-	loutb(IE_BFR(base), m->io_data, count);
-#else	MACH_KERNEL
-	for (tm_p = m; tm_p != (struct mbuf *)0; tm_p = tm_p->m_next) {
-		if (count + tm_p->m_len > ETHERMTU + sizeof(struct ether_header))
-			break;
-		if (tm_p->m_len == 0)
-			continue;
-		loutb(IE_BFR(base), mtod(tm_p, caddr_t), tm_p->m_len);
-		count += tm_p->m_len;
-	}
-#endif	MACH_KERNEL
-	while (count < bytes_in_msg) {
-		outb(IE_BFR(base), 0);
-		count++;
-	}
-	do {
-		if (!(int)m) {
-			outb(IE_CSR(base), IE_SYSBFR);
-		}
-		outw(IE_GP(base), BFRSIZ-bytes_in_msg);
-		outb(IE_CSR(base), IE_RIDE|IE_XMTEDLC);
-		if (m) {
-#ifdef	MACH_KERNEL
-			iodone(m);
-			m = 0;
-#else	MACH_KERNEL
-			m_freem(m);
-			m = (struct mbuf *) 0;
-#endif	MACH_KERNEL
-		}
-		for (i=0; inb(IE_CSR(base)) & IE_XMTBSY; i++);
-		if ((i=inb(EDLC_XMT(base))) & EDLC_JAM) {
-			is->badxmt++;
-#ifdef DEBUG
-			printf("at3c501xmt jam\n");
-#endif DEBUG
-		}
-	} while ((i & EDLC_JAM) && !(i & EDLC_16));
-
-	if (i & EDLC_16) {
-		printf("%");
-	}
-	return;
-
-}
-
-/*
- * at3c501config:
- *
- *	This routine does a standard config of the at3c501 board.
- *
- */
-at3c501config(unit)
-int	unit;
-{
-	caddr_t	base = at3c501_softc[unit].base;
-	u_char	stat;
-
-	/* Enable DMA & Interrupts */
-
-	outb(IE_CSR(base), IE_RIDE|IE_SYSBFR);
-
-	/* No Transmit Interrupts */
-
-	outb(EDLC_XMT(base), 0);
-	inb(EDLC_XMT(base));
-
-	/* Setup Receive Interrupts */
-
-	outb(EDLC_RCV(base), EDLC_BROAD|EDLC_SHORT|EDLC_GOOD|EDLC_DRIBBLE|EDLC_OVER);
-	inb(EDLC_RCV(base));
-
-	outb(IE_CSR(base), IE_RIDE|IE_SYSBFR);
-	outb(IE_RP(base), 0);
-	outb(IE_CSR(base), IE_RIDE|IE_RCVEDLC);
-	return(TRUE);
-}
-
-/*
- * at3c501intoff:
- *
- *	This function turns interrupts off for the at3c501 board indicated.
- *
- */
-at3c501intoff(unit)
-int unit;
-{
-	caddr_t base = at3c501_softc[unit].base;
-	outb(IE_CSR(base), 0);
-}
-
-#ifdef	MACH_KERNEL
-#else	MACH_KERNEL
-/*
- * The length of an mbuf chain
- */
-m_length(m)
-	register struct mbuf *m;
-{
-	register int len = 0;
-	
-	while (m) {
-		len += m->m_len;
-		m = m->m_next;
-	}
-	return len;
-}
-#endif	MACH_KERNEL
diff --git a/i386/i386at/if_3c501.h b/i386/i386at/if_3c501.h
deleted file mode 100644
index ac0641f..0000000
--- a/i386/i386at/if_3c501.h
+++ /dev/null
@@ -1,175 +0,0 @@
-/* 
- * Mach Operating System
- * Copyright (c) 1991,1990,1989 Carnegie Mellon University
- * All Rights Reserved.
- * 
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- * 
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- * 
- * Carnegie Mellon requests users of this software to return to
- * 
- *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
- *  School of Computer Science
- *  Carnegie Mellon University
- *  Pittsburgh PA 15213-3890
- * 
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
-/*
- *	File:	if_3c501.h
- *	Author: Philippe Bernadat
- *	Date:	1989
- * 	Copyright (c) 1989 OSF Research Institute 
- *
- * 	3COM Etherlink 3C501 Mach Ethernet drvier
- */
-/*
-  Copyright 1990 by Open Software Foundation,
-Cambridge, MA.
-
-		All Rights Reserved
-
-  Permission to use, copy, modify, and distribute this software and
-its documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appears in all copies and
-that both the copyright notice and this permission notice appear in
-supporting documentation, and that the name of OSF or Open Software
-Foundation not be used in advertising or publicity pertaining to
-distribution of the software without specific, written prior
-permission.
-
-  OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
-IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
-NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-/* The various IE command registers */
-
-#define	EDLC_ADDR(base)	(base)		/* EDLC station address, 6 bytes*/
-#define	EDLC_RCV(base)	((base)+0x6)	/* EDLC receive cmd. & stat.	*/
-#define	EDLC_XMT(base)	((base)+0x7)	/* EDLC transmit cmd. & stat.	*/
-#define	IE_GP(base)	((base)+0x8)	/* General Purpose pointer	*/
-#define	IE_RP(base)	((base)+0xa)	/* Receive buffer pointer	*/
-#define	IE_SAPROM(base)	((base)+0xc)	/* station addr prom window	*/
-#define	IE_CSR(base)	((base)+0xe)	/* IE command and status	*/
-#define	IE_BFR(base)	((base)+0xf)	/* 1 byte window on packet buffer*/
-
-/*  CSR Status Register (read)
- *
- *  _______________________________________________________________________ 
- * |        |        |        |        |        |        |        |        |
- * | XMTBSY |  RIDE  |   DMA  |  EDMA  |      BUFCTL     |        | RCVBSY |
- * |________|________|________|________|________|________|________|________|
- *
- */
-
-/*  CSR Command Register (write)
- * 
- *  _______________________________________________________________________ 
- * |        |        |        |        |        |        |        |        |
- * | RESET  |  RIDE  |   DMA  |        |      BUFCTL     |        |  IRE   |
- * |________|________|________|________|________|________|________|________|
- * 
- */
-
-#define	IE_XMTBSY	0x80	/* Transmitter busy (ro)		*/
-#define	IE_RESET	0x80	/* reset the controller (wo)		*/
-#define	IE_RIDE		0x40	/* request interrupt/DMA enable (rw)	*/
-#define	IE_DMA		0x20	/* DMA request (rw)			*/
-#define	IE_EDMA		0x10	/* DMA done (ro)			*/
-#define	IE_BUFCTL	0x0c	/* mask for buffer control field (rw)	*/
-#define	IE_RCVBSY	0x01	/* receive in progress (ro)		*/
-#define	IE_IRE		0x01	/* Interrupt request enable		*/
-
-/* BUFCTL values */
-
-#define	IE_LOOP		0x0c	/* 2 bit field in bits 2,3, loopback	*/
-#define	IE_RCVEDLC	0x08	/* gives buffer to receiver		*/
-#define	IE_XMTEDLC	0x04	/* gives buffer to transmit		*/
-#define	IE_SYSBFR	0x00	/* gives buffer to processor		*/
-
-/*  XMTCSR Transmit Status Register (read)
- * 
- *  _______________________________________________________________________ 
- * |        |        |        |        |        |        |        |        |
- * |        |        |        |        |  IDLE  |  16    |   JAM  |  UNDER |
- * |________|________|________|________|________|________|________|________|
- * 
- */
-
-/*  XMTCSR Transmit Command Register (write) enables interrupts when written
- * 
- *  _______________________________________________________________________ 
- * |        |        |        |        |        |        |        |        |
- * |        |        |        |        |        |        |        |        |
- * |________|________|________|________|________|________|________|________|
- * 
- */
-
-#define	EDLC_IDLE	0x08	/* transmit idle			*/
-#define	EDLC_16		0x04	/* packet experienced 16 collisions	*/
-#define	EDLC_JAM	0x02	/* packet experienced a collision	*/
-#define	EDLC_UNDER	0x01	/* data underflow			*/
-
-/*  RCVCSR Receive Status Register (read) 
- * 
- *  _______________________________________________________________________ 
- * |        |        |        |        |        |        |        |        |
- * |  STALE |        |  GOOD  |  ANY   | SHORT  | DRIBBLE|  FCS   |  OVER  |
- * |________|________|________|________|________|________|________|________|
- *
- */
-
-/*  RCVCSR Receive Command Register (write) enables interrupt when written
- * 
- *  _______________________________________________________________________ 
- * |        |        |        |        |        |        |        |        |
- * | ADDR MATCH MODE |  GOOD  |  ANY   | SHORT  | DRIBBLE|  FCS   |  OVER  |
- * |________|________|________|________|________|________|________|________|
- *
- */
-
-#define	EDLC_STALE	0x80	/* receive CSR status previously read 	*/
-#define	EDLC_GOOD	0x20	/* well formed packets only 		*/
-#define	EDLC_ANY	0x10	/* any packet, even those with errors 	*/
-#define	EDLC_SHORT	0x08	/* short frame 				*/
-#define	EDLC_DRIBBLE	0x04	/* dribble error 			*/
-#define	EDLC_FCS	0x02	/* CRC error 				*/
-#define	EDLC_OVER	0x01	/* data overflow 			*/
-
-/* Address Match Mode */
-
-#define	EDLC_NONE	0x00	/* match mode in bits 5-6, write only 	*/
-#define	EDLC_ALL	0x40	/* promiscuous receive, write only 	*/
-#define	EDLC_BROAD	0x80	/* station address plus broadcast 	*/
-#define	EDLC_MULTI	0xc0	/* station address plus multicast 	*/
- 
-/* Packet Buffer size */
-
-#define BFRSIZ		2048
-
-#define NAT3C501	1
-#define ETHER_ADD_SIZE	6	/* size of a MAC address */
-
-#ifndef TRUE
-#define TRUE		1
-#endif	TRUE
-#define	HZ		100
-
-#define	DSF_LOCK	1
-#define DSF_RUNNING	2
-
-#define MOD_ENAL 1
-#define MOD_PROM 2