Pre 4.0 tidy up.

Collect together the components of several drivers and export eisa from
the i386-only area (It's not, it's on some alphas too).  The code hasn't
been updated to work on the Alpha yet, but that can come later.

Repository copies were done a while ago.
Moving these now keeps them in consistant place across the 4.x series
as the newbusification progresses.

Submitted by:   mdodd

1 files changed, 0 insertions, 1133 deletions

diff --git a/sys/i386/isa/if_ex.c b/sys/i386/isa/if_ex.c
deleted file mode 100644
index 6a09445..0000000
--- a/sys/i386/isa/if_ex.c
+++ /dev/null
@@ -1,1133 +0,0 @@
-/*
- * Copyright (c) 1996, Javier Martín Rueda (jmrueda@diatel.upm.es)
- * 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 unmodified, 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.
- *
- * 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.
- *
- * $FreeBSD$
- *
- * MAINTAINER: Matthew N. Dodd <winter@jurai.net>
- *                             <mdodd@FreeBSD.org>
- */
-
-/*
- * Intel EtherExpress Pro/10, Pro/10+ Ethernet driver
- *
- * Revision history:
- *
- * 30-Oct-1996: first beta version. Inet and BPF supported, but no multicast.
- */
-
-#include "ex.h"
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/conf.h>
-#include <sys/sockio.h>
-#include <sys/mbuf.h>
-#include <sys/socket.h>
-
-#include <sys/module.h>
-#include <sys/bus.h>
-
-#include <machine/bus.h>
-#include <machine/resource.h>
-#include <sys/rman.h>
-
-#include <net/ethernet.h>
-#include <net/if.h>
-
-#include <netinet/in.h>
-#include <netinet/if_ether.h>
-
-#include <net/bpf.h>
-
-#include <machine/clock.h>
-
-#include <isa/isavar.h>
-#include <isa/pnpvar.h>
-
-#include <i386/isa/if_exreg.h>
-
-#ifdef EXDEBUG
-# define Start_End 1
-# define Rcvd_Pkts 2
-# define Sent_Pkts 4
-# define Status    8
-static int debug_mask = 0;
-static int exintr_count = 0;
-# define DODEBUG(level, action) if (level & debug_mask) action
-#else
-# define DODEBUG(level, action)
-#endif
-
-#define Conn_BNC 1
-#define Conn_TPE 2
-#define Conn_AUI 3
-
-#define CARD_TYPE_EX_10		1
-#define CARD_TYPE_EX_10_PLUS	2	
-
-struct ex_softc {
-  	struct arpcom	arpcom;		/* Ethernet common data */
-
-	device_t	dev;
-	struct resource *ioport;
-	struct resource *irq;
-
-	u_int		iobase;		/* I/O base address. */
-	u_short		irq_no;		/* IRQ number. */
-
-	char *		irq2ee;		/* irq <-> internal		*/
-	u_char *	ee2irq;		/* representation conversion	*/
-
-	u_short		connector;	/* Connector type. */
-
-	u_int		mem_size;	/* Total memory size, in bytes. */
-	u_int		rx_mem_size;	/* Rx memory size (by default,	*/
-					/* first 3/4 of total memory).	*/
-
-	u_int		rx_lower_limit;	/* Lower and upper limits of	*/
-	u_int		rx_upper_limit;	/* receive buffer.		*/
-
-	u_int		rx_head;	/* Head of receive ring buffer. */
-	u_int		tx_mem_size;	/* Tx memory size (by default,	*/
-					/* last quarter of total memory).*/
-
-	u_int		tx_lower_limit;	/* Lower and upper limits of	*/
-	u_int		tx_upper_limit;	/* transmit buffer.		*/
-
-	u_int		tx_head;	/* Head and tail of 		*/
-	u_int		tx_tail;	/* transmit ring buffer.	*/
-
-	u_int		tx_last;	/* Pointer to beginning of last	*/
-					/* frame in the chain.		*/
-};
-
-static char irq2eemap[] =
-	{ -1, -1, 0, 1, -1, 2, -1, -1, -1, 0, 3, 4, -1, -1, -1, -1 };
-static u_char ee2irqmap[] =
-	{ 9, 3, 5, 10, 11, 0, 0, 0 };
-
-static char plus_irq2eemap[] =
-	{ -1, -1, -1, 0, 1, 2, -1, 3, -1, 4, 5, 6, 7, -1, -1, -1 };
-static u_char plus_ee2irqmap[] =
-	{ 3, 4, 5, 7, 9, 10, 11, 12 };
-
-/* Bus Front End Functions */
-static void	ex_isa_identify	__P((driver_t *, device_t));
-static int	ex_isa_probe	__P((device_t));
-static int	ex_isa_attach	__P((device_t));
-
-/* Network Interface Functions */
-static void	ex_init		__P((void *));
-static void	ex_start	__P((struct ifnet *));
-static int	ex_ioctl	__P((struct ifnet *, u_long, caddr_t));
-static void	ex_watchdog	__P((struct ifnet *));
-
-static void	ex_stop		__P((struct ex_softc *));
-static void	ex_reset	__P((struct ex_softc *));
-
-static driver_intr_t	ex_intr;
-static void	ex_tx_intr	__P((struct ex_softc *));
-static void	ex_rx_intr	__P((struct ex_softc *));
-
-static u_short	eeprom_read	__P((int, int));
-
-static device_method_t ex_methods[] = {
-	/* Device interface */
-	DEVMETHOD(device_identify,	ex_isa_identify),
-	DEVMETHOD(device_probe,		ex_isa_probe),
-	DEVMETHOD(device_attach,	ex_isa_attach),
-
-	{ 0, 0 }
-};
-
-static driver_t ex_driver = {
-	"ex",
-	ex_methods,
-	sizeof(struct ex_softc),
-};
-
-static devclass_t ex_devclass;
-
-DRIVER_MODULE(ex, isa, ex_driver, ex_devclass, 0, 0);
-
-static struct isa_pnp_id ex_ids[] = {
-	{ 0x3110d425,	NULL },	/* INT1031 */
-	{ 0x3010d425,	NULL },	/* INT1030 */
-	{ 0,		NULL },
-};
-
-static int
-look_for_card (u_int iobase)
-{
-	int count1, count2;
-
-	/*
-	 * Check for the i82595 signature, and check that the round robin
-	 * counter actually advances.
-	 */
-	if (((count1 = inb(iobase + ID_REG)) & Id_Mask) != Id_Sig)
-		return(0);
-	count2 = inb(iobase + ID_REG);
-	count2 = inb(iobase + ID_REG);
-	count2 = inb(iobase + ID_REG);
-
-	return((count2 & Counter_bits) == ((count1 + 0xc0) & Counter_bits));
-}
-
-static int
-ex_get_media (u_int32_t iobase)
-{
-	int	tmp;
-
-	outb(iobase + CMD_REG, Bank2_Sel);
-	tmp = inb(iobase + REG3);
-	outb(iobase + CMD_REG, Bank0_Sel);
-
-	if (tmp & TPE_bit)
-		return(Conn_TPE);
-	if (tmp & BNC_bit)
-		return(Conn_BNC);
-
-	return (Conn_AUI);
-}
-
-static void
-ex_get_address (u_int32_t iobase, u_char *enaddr)
-{
-	u_int16_t	eaddr_tmp;
-
-	eaddr_tmp = eeprom_read(iobase, EE_Eth_Addr_Lo);
-	enaddr[5] = eaddr_tmp & 0xff;
-	enaddr[4] = eaddr_tmp >> 8;
-	eaddr_tmp = eeprom_read(iobase, EE_Eth_Addr_Mid);
-	enaddr[3] = eaddr_tmp & 0xff;
-	enaddr[2] = eaddr_tmp >> 8;
-	eaddr_tmp = eeprom_read(iobase, EE_Eth_Addr_Hi);
-	enaddr[1] = eaddr_tmp & 0xff;
-	enaddr[0] = eaddr_tmp >> 8;
-	
-	return;
-}
-
-static int
-ex_card_type (u_char *enaddr)
-{
-	if ((enaddr[0] == 0x00) && (enaddr[1] == 0xA0) && (enaddr[2] == 0xC9))
-		return (CARD_TYPE_EX_10_PLUS);
-
-	return (CARD_TYPE_EX_10);
-}
-
-/*
- * Non-destructive identify.
- */
-static void
-ex_isa_identify (driver_t *driver, device_t parent)
-{
-	device_t	child;
-	u_int32_t	ioport;
-	u_char 		enaddr[6];
-	u_int		irq;
-	int		tmp;
-	const char *	desc;
-
-	for (ioport = 0x200; ioport < 0x3a0; ioport += 0x10) {
-
-		/* No board found at address */
-		if (!look_for_card(ioport)) {
-			continue;
-		}
-
-		/* Board in PnP mode */
-		if (eeprom_read(ioport, 0) & 0x01) {
-			continue;
-		}
-
-		bzero(enaddr, sizeof(enaddr));
-
-		/* Reset the card. */
-		outb(ioport + CMD_REG, Reset_CMD);
-		DELAY(400);
-
-		ex_get_address(ioport, enaddr);
-		tmp = eeprom_read(ioport, EE_IRQ_No) & IRQ_No_Mask;
-
-		/* work out which set of irq <-> internal tables to use */
-		if (ex_card_type(enaddr) == CARD_TYPE_EX_10_PLUS) {
-			irq  = plus_ee2irqmap[tmp];
-			desc = "Intel Pro/10+";
-		} else {
-			irq = ee2irqmap[tmp];
-			desc = "Intel Pro/10";
-		}
-
-		child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE, "ex", -1);
-		device_set_desc_copy(child, desc);
-		device_set_driver(child, driver);
-		bus_set_resource(child, SYS_RES_IRQ, 0, irq, 1);
-		bus_set_resource(child, SYS_RES_IOPORT, 0, ioport, EX_IOSIZE);
-	}
-
-	return;
-}
-
-static int
-ex_isa_probe(device_t dev)
-{
-	u_int		iobase;
-	u_int		irq;
-	char *		irq2ee;
-	u_char *	ee2irq;
-	u_char 		enaddr[6];
-	int		tmp;
-	int		error;
-
-	DODEBUG(Start_End, printf("ex_probe: start\n"););
-
-	/* Check isapnp ids */
-	error = ISA_PNP_PROBE(device_get_parent(dev), dev, ex_ids);
-
-	/* If the card had a PnP ID that didn't match any we know about */
-	if (error == ENXIO) {
-		return(error);
-	}
-
-	/* If we had some other problem. */
-	if (!(error == 0 || error == ENOENT)) {
-		return(error);
-	}
-
-	iobase = bus_get_resource_start(dev, SYS_RES_IOPORT, 0);
-	if (iobase && !look_for_card(iobase)) {
-		printf("ex: no card found at 0x%03x\n", iobase);
-		return(ENXIO);
-	}
-
-	/*
-	 * Reset the card.
-	 */
-	outb(iobase + CMD_REG, Reset_CMD);
-	DELAY(400);
-
-	ex_get_address(iobase, enaddr);
-
-	/* work out which set of irq <-> internal tables to use */
-	if (ex_card_type(enaddr) == CARD_TYPE_EX_10_PLUS) {
-		irq2ee = plus_irq2eemap;
-		ee2irq = plus_ee2irqmap;
-	} else {
-		irq2ee = irq2eemap;
-		ee2irq = ee2irqmap;
-	}
-
-	tmp = eeprom_read(iobase, EE_IRQ_No) & IRQ_No_Mask;
-	irq = bus_get_resource_start(dev, SYS_RES_IRQ, 0);
-
-	if (irq > 0) {
-		/* This will happen if board is in PnP mode. */
-		if (ee2irq[tmp] != irq) {
-			printf("ex: WARNING: board's EEPROM is configured"
-				" for IRQ %d, using %d\n",
-				ee2irq[tmp], irq);
-		}
-	} else {
-		irq = ee2irq[tmp];
-		bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1);
-	}
-
-	if (irq == 0) {
-		printf("ex: invalid IRQ.\n");
-		return(ENXIO);
-	}
-
-	DODEBUG(Start_End, printf("ex_probe: finish\n"););
-
-	return(0);
-}
-
-static int
-ex_isa_attach(device_t dev)
-{
-	struct ex_softc *	sc = device_get_softc(dev);
-	struct ifnet *		ifp = &sc->arpcom.ac_if;
-	int			unit = device_get_unit(dev);
-	int			error;
-	int			rid;
-	void *			ih;
-
-	DODEBUG(Start_End, device_printf(dev, "start\n"););
-
-	rid = 0;
-	sc->ioport  = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
-					 0, ~0, 1, RF_ACTIVE);
-
-	if (!sc->ioport) {
-		device_printf(dev, "No I/O space?!\n");
-		goto bad;
-	}
-
-	rid = 0;
-	sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
-				     0, ~0, 1, RF_ACTIVE);
-
-	if (!sc->irq) {
-		device_printf(dev, "No IRQ?!\n");
-		goto bad;
-	}
-
-	error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET,
-			       ex_intr, (void *)sc, &ih);
-
-	if (error) {
-		device_printf(dev, "bus_setup_intr() failed!\n");
-		goto bad;
-	}
-
-	/*
-	 * Fill in several fields of the softc structure:
-	 *	- I/O base address.
-	 *	- Hardware Ethernet address.
-	 *	- IRQ number (if not supplied in config file, read it from EEPROM).
-	 *	- Connector type.
-	 */
-	sc->dev = dev;
-	sc->iobase = rman_get_start(sc->ioport);
-	sc->irq_no = rman_get_start(sc->irq);
-
-	ex_get_address(sc->iobase, sc->arpcom.ac_enaddr);
-
-	/* work out which set of irq <-> internal tables to use */
-	if (ex_card_type(sc->arpcom.ac_enaddr) == CARD_TYPE_EX_10_PLUS) {
-		sc->irq2ee = plus_irq2eemap;
-		sc->ee2irq = plus_ee2irqmap;
-	} else {
-		sc->irq2ee = irq2eemap;
-		sc->ee2irq = ee2irqmap;
-	}
-
-	sc->connector = ex_get_media(sc->iobase);
-	sc->mem_size = CARD_RAM_SIZE;	/* XXX This should be read from the card itself. */
-
-	/*
-	 * Initialize the ifnet structure.
-	 */
-	ifp->if_softc = sc;
-	ifp->if_unit = unit;
-	ifp->if_name = "ex";
-	ifp->if_mtu = ETHERMTU;
-	ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST /* XXX not done yet. | IFF_MULTICAST */;
-	ifp->if_output = ether_output;
-	ifp->if_start = ex_start;
-	ifp->if_ioctl = ex_ioctl;
-	ifp->if_watchdog = ex_watchdog;
-	ifp->if_init = ex_init;
-	ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
-
-	/*
-	 * Attach the interface.
-	 */
-	if_attach(ifp);
-	ether_ifattach(ifp);
-
-	device_printf(sc->dev, "Ethernet address %6D\n",
-			sc->arpcom.ac_enaddr, ":");
-
-	/*
-	 * If BPF is in the kernel, call the attach for it
-	 */
-	bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
-	DODEBUG(Start_End, printf("ex_isa_attach%d: finish\n", unit););
-
-	return(0);
-bad:
-
-	if (sc->ioport)
-		bus_release_resource(dev, SYS_RES_IOPORT, 0, sc->ioport);
-	if (sc->irq)
-		bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq);
-
-	return (-1);
-}
-
-
-static void
-ex_init(void *xsc)
-{
-	struct ex_softc *	sc = (struct ex_softc *) xsc;
-	struct ifnet *		ifp = &sc->arpcom.ac_if;
-	int			s;
-	int			i;
-	register int		iobase = sc->iobase;
-	unsigned short		temp_reg;
-
-	DODEBUG(Start_End, printf("ex_init%d: start\n", ifp->if_unit););
-
-	if (ifp->if_addrhead.tqh_first == NULL) {
-		return;
-	}
-	s = splimp();
-	sc->arpcom.ac_if.if_timer = 0;
-
-	/*
-	 * Load the ethernet address into the card.
-	 */
-	outb(iobase + CMD_REG, Bank2_Sel);
-	temp_reg = inb(iobase + EEPROM_REG);
-	if (temp_reg & Trnoff_Enable) {
-		outb(iobase + EEPROM_REG, temp_reg & ~Trnoff_Enable);
-	}
-	for (i = 0; i < ETHER_ADDR_LEN; i++) {
-		outb(iobase + I_ADDR_REG0 + i, sc->arpcom.ac_enaddr[i]);
-	}
-	/*
-	 * - Setup transmit chaining and discard bad received frames.
-	 * - Match broadcast.
-	 * - Clear test mode.
-	 * - Set receiving mode.
-	 * - Set IRQ number.
-	 */
-	outb(iobase + REG1, inb(iobase + REG1) | Tx_Chn_Int_Md | Tx_Chn_ErStp | Disc_Bad_Fr);
-	outb(iobase + REG2, inb(iobase + REG2) | No_SA_Ins | RX_CRC_InMem);
-	outb(iobase + REG3, inb(iobase + REG3) & 0x3f /* XXX constants. */ );
-	outb(iobase + CMD_REG, Bank1_Sel);
-	outb(iobase + INT_NO_REG, (inb(iobase + INT_NO_REG) & 0xf8) | sc->irq2ee[sc->irq_no]);
-
-	/*
-	 * Divide the available memory in the card into rcv and xmt buffers.
-	 * By default, I use the first 3/4 of the memory for the rcv buffer,
-	 * and the remaining 1/4 of the memory for the xmt buffer.
-	 */
-	sc->rx_mem_size = sc->mem_size * 3 / 4;
-	sc->tx_mem_size = sc->mem_size - sc->rx_mem_size;
-	sc->rx_lower_limit = 0x0000;
-	sc->rx_upper_limit = sc->rx_mem_size - 2;
-	sc->tx_lower_limit = sc->rx_mem_size;
-	sc->tx_upper_limit = sc->mem_size - 2;
-	outb(iobase + RCV_LOWER_LIMIT_REG, sc->rx_lower_limit >> 8);
-	outb(iobase + RCV_UPPER_LIMIT_REG, sc->rx_upper_limit >> 8);
-	outb(iobase + XMT_LOWER_LIMIT_REG, sc->tx_lower_limit >> 8);
-	outb(iobase + XMT_UPPER_LIMIT_REG, sc->tx_upper_limit >> 8);
-	
-	/*
-	 * Enable receive and transmit interrupts, and clear any pending int.
-	 */
-	outb(iobase + REG1, inb(iobase + REG1) | TriST_INT);
-	outb(iobase + CMD_REG, Bank0_Sel);
-	outb(iobase + MASK_REG, All_Int & ~(Rx_Int | Tx_Int));
-	outb(iobase + STATUS_REG, All_Int);
-
-	/*
-	 * Initialize receive and transmit ring buffers.
-	 */
-	outw(iobase + RCV_BAR, sc->rx_lower_limit);
-	sc->rx_head = sc->rx_lower_limit;
-	outw(iobase + RCV_STOP_REG, sc->rx_upper_limit | 0xfe);
-	outw(iobase + XMT_BAR, sc->tx_lower_limit);
-	sc->tx_head = sc->tx_tail = sc->tx_lower_limit;
-
-	ifp->if_flags |= IFF_RUNNING;
-	ifp->if_flags &= ~IFF_OACTIVE;
-	DODEBUG(Status, printf("OIDLE init\n"););
-	
-	/*
-	 * Final reset of the board, and enable operation.
-	 */
-	outb(iobase + CMD_REG, Sel_Reset_CMD);
-	DELAY(2);
-	outb(iobase + CMD_REG, Rcv_Enable_CMD);
-
-	ex_start(ifp);
-	splx(s);
-
-	DODEBUG(Start_End, printf("ex_init%d: finish\n", ifp->if_unit););
-}
-
-
-static void
-ex_start(struct ifnet *ifp)
-{
-	struct ex_softc *	sc = ifp->if_softc;
-	int			iobase = sc->iobase;
-	int			i, s, len, data_len, avail, dest, next;
-	unsigned char		tmp16[2];
-	struct mbuf *		opkt;
-	struct mbuf *		m;
-
-	DODEBUG(Start_End, printf("ex_start%d: start\n", unit););
-
-	s = splimp();
-
-	/*
-	 * Main loop: send outgoing packets to network card until there are no
-	 * more packets left, or the card cannot accept any more yet.
-	 */
-	while (((opkt = ifp->if_snd.ifq_head) != NULL) &&
-	       !(ifp->if_flags & IFF_OACTIVE)) {
-
-		/*
-		 * Ensure there is enough free transmit buffer space for
-		 * this packet, including its header. Note: the header
-		 * cannot wrap around the end of the transmit buffer and
-		 * must be kept together, so we allow space for twice the
-		 * length of the header, just in case.
-		 */
-
-		for (len = 0, m = opkt; m != NULL; m = m->m_next) {
-			len += m->m_len;
-		}
-
-		data_len = len;
-
-		DODEBUG(Sent_Pkts, printf("1. Sending packet with %d data bytes. ", data_len););
-
-		if (len & 1) {
-			len += XMT_HEADER_LEN + 1;
-		} else {
-			len += XMT_HEADER_LEN;
-		}
-
-		if ((i = sc->tx_tail - sc->tx_head) >= 0) {
-			avail = sc->tx_mem_size - i;
-		} else {
-			avail = -i;
-		}
-
-		DODEBUG(Sent_Pkts, printf("i=%d, avail=%d\n", i, avail););
-
-		if (avail >= len + XMT_HEADER_LEN) {
-			IF_DEQUEUE(&ifp->if_snd, opkt);
-
-#ifdef EX_PSA_INTR      
-			/*
-			 * Disable rx and tx interrupts, to avoid corruption
-			 * of the host address register by interrupt service
-			 * routines.
-			 * XXX Is this necessary with splimp() enabled?
-			 */
-			outb(iobase + MASK_REG, All_Int);
-#endif
-
-			/*
-			 * Compute the start and end addresses of this
-			 * frame in the tx buffer.
-			 */
-			dest = sc->tx_tail;
-			next = dest + len;
-
-			if (next > sc->tx_upper_limit) {
-				if ((sc->tx_upper_limit + 2 - sc->tx_tail) <=
-				    XMT_HEADER_LEN) {
-					dest = sc->tx_lower_limit;
-					next = dest + len;
-				} else {
-					next = sc->tx_lower_limit +
-						next - sc->tx_upper_limit - 2;
-				}
-			}
-
-			/*
-			 * Build the packet frame in the card's ring buffer.
-			 */
-			DODEBUG(Sent_Pkts, printf("2. dest=%d, next=%d. ", dest, next););
-
-			outw(iobase + HOST_ADDR_REG, dest);
-			outw(iobase + IO_PORT_REG, Transmit_CMD);
-			outw(iobase + IO_PORT_REG, 0);
-			outw(iobase + IO_PORT_REG, next);
-			outw(iobase + IO_PORT_REG, data_len);
-
-			/*
-			 * Output the packet data to the card. Ensure all
-			 * transfers are 16-bit wide, even if individual
-			 * mbufs have odd length.
-			 */
-
-			for (m = opkt, i = 0; m != NULL; m = m->m_next) {
-				DODEBUG(Sent_Pkts, printf("[%d]", m->m_len););
-				if (i) {
-					tmp16[1] = *(mtod(m, caddr_t));
-					outsw(iobase + IO_PORT_REG, tmp16, 1);
-				}
-				outsw(iobase + IO_PORT_REG,
-				      mtod(m, caddr_t) + i, (m->m_len - i) / 2);
-
-				if ((i = (m->m_len - i) & 1) != 0) {
-					tmp16[0] = *(mtod(m, caddr_t) +
-						   m->m_len - 1);
-				}
-			}
-			if (i) {
-				outsw(iobase + IO_PORT_REG, tmp16, 1);
-			}
-	
-			/*
-			 * If there were other frames chained, update the
-			 * chain in the last one.
-			 */
-			if (sc->tx_head != sc->tx_tail) {
-				if (sc->tx_tail != dest) {
-					outw(iobase + HOST_ADDR_REG,
-					     sc->tx_last + XMT_Chain_Point);
-					outw(iobase + IO_PORT_REG, dest);
-				}
-				outw(iobase + HOST_ADDR_REG,
-				     sc->tx_last + XMT_Byte_Count);
-				i = inw(iobase + IO_PORT_REG);
-				outw(iobase + HOST_ADDR_REG,
-				     sc->tx_last + XMT_Byte_Count);
-				outw(iobase + IO_PORT_REG, i | Ch_bit);
-			}
-	
-			/*
-			 * Resume normal operation of the card:
-			 * - Make a dummy read to flush the DRAM write
-			 *   pipeline.
-			 * - Enable receive and transmit interrupts.
-			 * - Send Transmit or Resume_XMT command, as
-			 *   appropriate.
-			 */
-			inw(iobase + IO_PORT_REG);
-#ifdef EX_PSA_INTR
-			outb(iobase + MASK_REG, All_Int & ~(Rx_Int | Tx_Int));
-#endif
-			if (sc->tx_head == sc->tx_tail) {
-				outw(iobase + XMT_BAR, dest);
-				outb(iobase + CMD_REG, Transmit_CMD);
-				sc->tx_head = dest;
-				DODEBUG(Sent_Pkts, printf("Transmit\n"););
-			} else {
-				outb(iobase + CMD_REG, Resume_XMT_List_CMD);
-				DODEBUG(Sent_Pkts, printf("Resume\n"););
-			}
-	
-			sc->tx_last = dest;
-			sc->tx_tail = next;
-     	 
-			if (ifp->if_bpf != NULL) {
-				bpf_mtap(ifp, opkt);
-			}
-
-			ifp->if_timer = 2;
-			ifp->if_opackets++;
-			m_freem(opkt);
-		} else {
-			ifp->if_flags |= IFF_OACTIVE;
-			DODEBUG(Status, printf("OACTIVE start\n"););
-		}
-	}
-
-	splx(s);
-
-	DODEBUG(Start_End, printf("ex_start%d: finish\n", unit););
-}
-
-static void
-ex_stop(struct ex_softc *sc)
-{
-	int iobase = sc->iobase;
-
-	DODEBUG(Start_End, printf("ex_stop%d: start\n", unit););
-
-	/*
-	 * Disable card operation:
-	 * - Disable the interrupt line.
-	 * - Flush transmission and disable reception.
-	 * - Mask and clear all interrupts.
-	 * - Reset the 82595.
-	 */
-	outb(iobase + CMD_REG, Bank1_Sel);
-	outb(iobase + REG1, inb(iobase + REG1) & ~TriST_INT);
-	outb(iobase + CMD_REG, Bank0_Sel);
-	outb(iobase + CMD_REG, Rcv_Stop);
-	sc->tx_head = sc->tx_tail = sc->tx_lower_limit;
-	sc->tx_last = 0; /* XXX I think these two lines are not necessary, because ex_init will always be called again to reinit the interface. */
-	outb(iobase + MASK_REG, All_Int);
-	outb(iobase + STATUS_REG, All_Int);
-	outb(iobase + CMD_REG, Reset_CMD);
-	DELAY(200);
-
-	DODEBUG(Start_End, printf("ex_stop%d: finish\n", unit););
-
-	return;
-}
-
-
-static void
-ex_intr(void *arg)
-{
-	struct ex_softc *	sc = (struct ex_softc *)arg;
-	struct ifnet *	ifp = &sc->arpcom.ac_if;
-	int			iobase = sc->iobase;
-	int			int_status, send_pkts;
-
-	DODEBUG(Start_End, printf("ex_intr%d: start\n", unit););
-
-#ifdef EXDEBUG
-	if (++exintr_count != 1)
-		printf("WARNING: nested interrupt (%d). Mail the author.\n", exintr_count);
-#endif
-
-	send_pkts = 0;
-	while ((int_status = inb(iobase + STATUS_REG)) & (Tx_Int | Rx_Int)) {
-		if (int_status & Rx_Int) {
-			outb(iobase + STATUS_REG, Rx_Int);
-
-			ex_rx_intr(sc);
-		} else if (int_status & Tx_Int) {
-			outb(iobase + STATUS_REG, Tx_Int);
-
-			ex_tx_intr(sc);
-			send_pkts = 1;
-		}
-	}
-
-	/*
-	 * If any packet has been transmitted, and there are queued packets to
-	 * be sent, attempt to send more packets to the network card.
-	 */
-
-	if (send_pkts && (ifp->if_snd.ifq_head != NULL)) {
-		ex_start(ifp);
-	}
-
-#ifdef EXDEBUG
-	exintr_count--;
-#endif
-
-	DODEBUG(Start_End, printf("ex_intr%d: finish\n", unit););
-
-	return;
-}
-
-static void
-ex_tx_intr(struct ex_softc *sc)
-{
-	struct ifnet *	ifp = &sc->arpcom.ac_if;
-	int		iobase = sc->iobase;
-	int		tx_status;
-
-	DODEBUG(Start_End, printf("ex_tx_intr%d: start\n", unit););
-
-	/*
-	 * - Cancel the watchdog.
-	 * For all packets transmitted since last transmit interrupt:
-	 * - Advance chain pointer to next queued packet.
-	 * - Update statistics.
-	 */
-
-	ifp->if_timer = 0;
-
-	while (sc->tx_head != sc->tx_tail) {
-		outw(iobase + HOST_ADDR_REG, sc->tx_head);
-
-		if (! inw(iobase + IO_PORT_REG) & Done_bit)
-			break;
-
-		tx_status = inw(iobase + IO_PORT_REG);
-		sc->tx_head = inw(iobase + IO_PORT_REG);
-
-		if (tx_status & TX_OK_bit) {
-			ifp->if_opackets++;
-		} else {
-			ifp->if_oerrors++;
-		}
-
-		ifp->if_collisions += tx_status & No_Collisions_bits;
-	}
-
-	/*
-	 * The card should be ready to accept more packets now.
-	 */
-
-	ifp->if_flags &= ~IFF_OACTIVE;
-
-	DODEBUG(Status, printf("OIDLE tx_intr\n"););
-	DODEBUG(Start_End, printf("ex_tx_intr%d: finish\n", unit););
-
-	return;
-}
-
-static void
-ex_rx_intr(struct ex_softc *sc)
-{
-	struct ifnet *		ifp = &sc->arpcom.ac_if;
-	int			iobase = sc->iobase;
-	int			rx_status;
-	int			pkt_len;
-	int			QQQ;
-	struct mbuf *		m;
-	struct mbuf *		ipkt;
-	struct ether_header *	eh;
-
-	DODEBUG(Start_End, printf("ex_rx_intr%d: start\n", unit););
-
-	/*
-	 * For all packets received since last receive interrupt:
-	 * - If packet ok, read it into a new mbuf and queue it to interface,
-	 *   updating statistics.
-	 * - If packet bad, just discard it, and update statistics.
-	 * Finally, advance receive stop limit in card's memory to new location.
-	 */
-
-	outw(iobase + HOST_ADDR_REG, sc->rx_head);
-
-	while (inw(iobase + IO_PORT_REG) == RCV_Done) {
-
-		rx_status = inw(iobase + IO_PORT_REG);
-		sc->rx_head = inw(iobase + IO_PORT_REG);
-		QQQ = pkt_len = inw(iobase + IO_PORT_REG);
-
-		if (rx_status & RCV_OK_bit) {
-			MGETHDR(m, M_DONTWAIT, MT_DATA);
-			ipkt = m;
-			if (ipkt == NULL) {
-				ifp->if_iqdrops++;
-			} else {
-				ipkt->m_pkthdr.rcvif = ifp;
-				ipkt->m_pkthdr.len = pkt_len;
-				ipkt->m_len = MHLEN;
-
-				while (pkt_len > 0) {
-					if (pkt_len > MINCLSIZE) {
-						MCLGET(m, M_DONTWAIT);
-						if (m->m_flags & M_EXT) {
-							m->m_len = MCLBYTES;
-						} else {
-							m_freem(ipkt);
-							ifp->if_iqdrops++;
-							goto rx_another;
-						}
-					}
-					m->m_len = min(m->m_len, pkt_len);
-
-	  /*
-	   * NOTE: I'm assuming that all mbufs allocated are of even length,
-	   * except for the last one in an odd-length packet.
-	   */
-
-					insw(iobase + IO_PORT_REG,
-					     mtod(m, caddr_t), m->m_len / 2);
-
-					if (m->m_len & 1) {
-						*(mtod(m, caddr_t) + m->m_len - 1) = inb(iobase + IO_PORT_REG);
-					}
-					pkt_len -= m->m_len;
-
-					if (pkt_len > 0) {
-						MGET(m->m_next, M_DONTWAIT, MT_DATA);
-						if (m->m_next == NULL) {
-							m_freem(ipkt);
-							ifp->if_iqdrops++;
-							goto rx_another;
-						}
-						m = m->m_next;
-						m->m_len = MLEN;
-					}
-				}
-				eh = mtod(ipkt, struct ether_header *);
-#ifdef EXDEBUG
-	if (debug_mask & Rcvd_Pkts) {
-		if ((eh->ether_dhost[5] != 0xff) || (eh->ether_dhost[0] != 0xff)) {
-			printf("Receive packet with %d data bytes: %6D -> ", QQQ, eh->ether_shost, ":");
-			printf("%6D\n", eh->ether_dhost, ":");
-		} /* QQQ */
-	}
-#endif
-				if (ifp->if_bpf != NULL) {
-					bpf_mtap(ifp, ipkt);
-
-		/*
-		 * Note that the interface cannot be in promiscuous mode
-		 * if there are no BPF listeners. And if we are in
-		 * promiscuous mode, we have to check if this packet is
-		 * really ours.
-		 */
-					if ((ifp->if_flags & IFF_PROMISC) &&
-					    (eh->ether_dhost[0] & 1) == 0 &&
-					    bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, sizeof(eh->ether_dhost)) != 0 &&
-					    bcmp(eh->ether_dhost, etherbroadcastaddr, sizeof(eh->ether_dhost)) != 0) {
-						m_freem(ipkt);
-						goto rx_another;
-					}
-				}
-				m_adj(ipkt, sizeof(struct ether_header));
-				ether_input(ifp, eh, ipkt);
-				ifp->if_ipackets++;
-			}
-		} else {
-			ifp->if_ierrors++;
-		}
-		outw(iobase + HOST_ADDR_REG, sc->rx_head);
-rx_another: ;
-	}
-
-	if (sc->rx_head < sc->rx_lower_limit + 2)
-		outw(iobase + RCV_STOP_REG, sc->rx_upper_limit);
-	else
-		outw(iobase + RCV_STOP_REG, sc->rx_head - 2);
-
-	DODEBUG(Start_End, printf("ex_rx_intr%d: finish\n", unit););
-
-	return;
-}
-
-
-static int
-ex_ioctl(register struct ifnet *ifp, u_long cmd, caddr_t data)
-{
-	struct ex_softc *	sc = ifp->if_softc;
-	int			s;
-	int			error = 0;
-
-	DODEBUG(Start_End, printf("ex_ioctl%d: start ", ifp->if_unit););
-
-	s = splimp();
-
-	switch(cmd) {
-		case SIOCSIFADDR:
-		case SIOCGIFADDR:
-		case SIOCSIFMTU:
-			error = ether_ioctl(ifp, cmd, data);
-			break;
-
-		case SIOCSIFFLAGS:
-			DODEBUG(Start_End, printf("SIOCSIFFLAGS"););
-			if ((ifp->if_flags & IFF_UP) == 0 &&
-			    (ifp->if_flags & IFF_RUNNING)) {
-
-				ifp->if_flags &= ~IFF_RUNNING;
-				ex_stop(sc);
-			} else {
-      				ex_init(sc);
-			}
-			break;
-#ifdef NODEF
-		case SIOCGHWADDR:
-			DODEBUG(Start_End, printf("SIOCGHWADDR"););
-			bcopy((caddr_t)sc->sc_addr, (caddr_t)&ifr->ifr_data,
-			      sizeof(sc->sc_addr));
-			break;
-#endif
-		case SIOCADDMULTI:
-			DODEBUG(Start_End, printf("SIOCADDMULTI"););
-		case SIOCDELMULTI:
-			DODEBUG(Start_End, printf("SIOCDELMULTI"););
-			/* XXX Support not done yet. */
-			error = EINVAL;
-			break;
-		default:
-			DODEBUG(Start_End, printf("unknown"););
-			error = EINVAL;
-	}
-
-	splx(s);
-
-	DODEBUG(Start_End, printf("\nex_ioctl%d: finish\n", ifp->if_unit););
-
-	return(error);
-}
-
-
-static void
-ex_reset(struct ex_softc *sc)
-{
-	int s;
-
-	DODEBUG(Start_End, printf("ex_reset%d: start\n", unit););
-  
-	s = splimp();
-
-	ex_stop(sc);
-	ex_init(sc);
-
-	splx(s);
-
-	DODEBUG(Start_End, printf("ex_reset%d: finish\n", unit););
-
-	return;
-}
-
-
-static void
-ex_watchdog(struct ifnet *ifp)
-{
-	struct ex_softc *	sc = ifp->if_softc;
-
-	DODEBUG(Start_End, printf("ex_watchdog%d: start\n", ifp->if_unit););
-
-	ifp->if_flags &= ~IFF_OACTIVE;
-
-	DODEBUG(Status, printf("OIDLE watchdog\n"););
-
-	ifp->if_oerrors++;
-	ex_reset(sc);
-	ex_start(ifp);
-
-	DODEBUG(Start_End, printf("ex_watchdog%d: finish\n", ifp->if_unit););
-
-	return;
-}
-
-
-static u_short
-eeprom_read(int iobase, int location)
-{
-	int i;
-	u_short data = 0;
-	int ee_addr;
-	int read_cmd = location | EE_READ_CMD;
-	short ctrl_val = EECS;
-
-	ee_addr = iobase + EEPROM_REG;
-	outb(iobase + CMD_REG, Bank2_Sel);
-	outb(ee_addr, EECS);
-	for (i = 8; i >= 0; i--) {
-		short outval = (read_cmd & (1 << i)) ? ctrl_val | EEDI : ctrl_val;
-		outb(ee_addr, outval);
-		outb(ee_addr, outval | EESK);
-		DELAY(3);
-		outb(ee_addr, outval);
-		DELAY(2);
-	}
-	outb(ee_addr, ctrl_val);
-
-	for (i = 16; i > 0; i--) {
-		outb(ee_addr, ctrl_val | EESK);
-		DELAY(3);
-		data = (data << 1) | ((inb(ee_addr) & EEDO) ? 1 : 0);
-		outb(ee_addr, ctrl_val);
-		DELAY(2);
-	}
-
-	ctrl_val &= ~EECS;
-	outb(ee_addr, ctrl_val | EESK);
-	DELAY(3);
-	outb(ee_addr, ctrl_val);
-	DELAY(2);
-	outb(iobase + CMD_REG, Bank0_Sel);
-	return(data);
-}