i825xx: Move the Intel 82586/82593/82596 based drivers

Move the drivers that use the i82586/i82593/i82596 chipsets into
drivers/net/ethernet/i825xx/ and make the necessary Kconfig and
Makefile changes.  There were 4 3Com drivers which were initially
moved into 3com/, which now reside in i825xx since they all used
the i82586 chip.

CC: Philip Blundell <philb@gnu.org>
CC: Russell King <linux@arm.linux.org.uk>
CC: <aris@cathedrallabs.org>
CC: Donald Becker <becker@scyld.com>
CC: Chris Beauregard <cpbeaure@undergrad.math.uwaterloo.ca>
CC: Richard Procter <rnp@paradise.net.nz>
CC: Andries Brouwer <aeb@cwi.nl>
CC: "M.Hipp" <hippm@informatik.uni-tuebingen.de>
CC: Richard Hirst <richard@sleepie.demon.co.uk>
CC: Sam Creasey <sammy@oh.verio.com>
CC: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 0 insertions, 939 deletions

diff --git a/drivers/net/3c507.c b/drivers/net/3c507.c
deleted file mode 100644
index 1e945551c144..000000000000
--- a/drivers/net/3c507.c
+++ /dev/null
@@ -1,939 +0,0 @@
-/* 3c507.c: An EtherLink16 device driver for Linux. */
-/*
-	Written 1993,1994 by Donald Becker.
-
-	Copyright 1993 United States Government as represented by the
-	Director, National Security Agency.
-
-	This software may be used and distributed according to the terms
-	of the GNU General Public License, incorporated herein by reference.
-
-	The author may be reached as becker@scyld.com, or C/O
-	Scyld Computing Corporation
-	410 Severn Ave., Suite 210
-	Annapolis MD 21403
-
-
-	Thanks go to jennings@Montrouge.SMR.slb.com ( Patrick Jennings)
-	and jrs@world.std.com (Rick Sladkey) for testing and bugfixes.
-	Mark Salazar <leslie@access.digex.net> made the changes for cards with
-	only 16K packet buffers.
-
-	Things remaining to do:
-	Verify that the tx and rx buffers don't have fencepost errors.
-	Move the theory of operation and memory map documentation.
-	The statistics need to be updated correctly.
-*/
-
-#define DRV_NAME		"3c507"
-#define DRV_VERSION		"1.10a"
-#define DRV_RELDATE		"11/17/2001"
-
-static const char version[] =
-	DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " Donald Becker (becker@scyld.com)\n";
-
-/*
-  Sources:
-	This driver wouldn't have been written with the availability of the
-	Crynwr driver source code.	It provided a known-working implementation
-	that filled in the gaping holes of the Intel documentation.  Three cheers
-	for Russ Nelson.
-
-	Intel Microcommunications Databook, Vol. 1, 1990.  It provides just enough
-	info that the casual reader might think that it documents the i82586 :-<.
-*/
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/string.h>
-#include <linux/spinlock.h>
-#include <linux/ethtool.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/if_ether.h>
-#include <linux/skbuff.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-
-#include <asm/dma.h>
-#include <asm/io.h>
-#include <asm/system.h>
-#include <asm/uaccess.h>
-
-/* use 0 for production, 1 for verification, 2..7 for debug */
-#ifndef NET_DEBUG
-#define NET_DEBUG 1
-#endif
-static unsigned int net_debug = NET_DEBUG;
-#define debug net_debug
-
-
-/*
-  			Details of the i82586.
-
-   You'll really need the databook to understand the details of this part,
-   but the outline is that the i82586 has two separate processing units.
-   Both are started from a list of three configuration tables, of which only
-   the last, the System Control Block (SCB), is used after reset-time.  The SCB
-   has the following fields:
-		Status word
-		Command word
-		Tx/Command block addr.
-		Rx block addr.
-   The command word accepts the following controls for the Tx and Rx units:
-  */
-
-#define	 CUC_START	 0x0100
-#define	 CUC_RESUME	 0x0200
-#define	 CUC_SUSPEND 0x0300
-#define	 RX_START	 0x0010
-#define	 RX_RESUME	 0x0020
-#define	 RX_SUSPEND	 0x0030
-
-/* The Rx unit uses a list of frame descriptors and a list of data buffer
-   descriptors.  We use full-sized (1518 byte) data buffers, so there is
-   a one-to-one pairing of frame descriptors to buffer descriptors.
-
-   The Tx ("command") unit executes a list of commands that look like:
-		Status word		Written by the 82586 when the command is done.
-		Command word	Command in lower 3 bits, post-command action in upper 3
-		Link word		The address of the next command.
-		Parameters		(as needed).
-
-	Some definitions related to the Command Word are:
- */
-#define CMD_EOL		0x8000			/* The last command of the list, stop. */
-#define CMD_SUSP	0x4000			/* Suspend after doing cmd. */
-#define CMD_INTR	0x2000			/* Interrupt after doing cmd. */
-
-enum commands {
-	CmdNOp = 0, CmdSASetup = 1, CmdConfigure = 2, CmdMulticastList = 3,
-	CmdTx = 4, CmdTDR = 5, CmdDump = 6, CmdDiagnose = 7};
-
-/* Information that need to be kept for each board. */
-struct net_local {
-	int last_restart;
-	ushort rx_head;
-	ushort rx_tail;
-	ushort tx_head;
-	ushort tx_cmd_link;
-	ushort tx_reap;
-	ushort tx_pkts_in_ring;
-	spinlock_t lock;
-	void __iomem *base;
-};
-
-/*
-  		Details of the EtherLink16 Implementation
-  The 3c507 is a generic shared-memory i82586 implementation.
-  The host can map 16K, 32K, 48K, or 64K of the 64K memory into
-  0x0[CD][08]0000, or all 64K into 0xF[02468]0000.
-  */
-
-/* Offsets from the base I/O address. */
-#define	SA_DATA		0	/* Station address data, or 3Com signature. */
-#define MISC_CTRL	6	/* Switch the SA_DATA banks, and bus config bits. */
-#define RESET_IRQ	10	/* Reset the latched IRQ line. */
-#define SIGNAL_CA	11	/* Frob the 82586 Channel Attention line. */
-#define ROM_CONFIG	13
-#define MEM_CONFIG	14
-#define IRQ_CONFIG	15
-#define EL16_IO_EXTENT 16
-
-/* The ID port is used at boot-time to locate the ethercard. */
-#define ID_PORT		0x100
-
-/* Offsets to registers in the mailbox (SCB). */
-#define iSCB_STATUS	0x8
-#define iSCB_CMD		0xA
-#define iSCB_CBL		0xC	/* Command BLock offset. */
-#define iSCB_RFA		0xE	/* Rx Frame Area offset. */
-
-/*  Since the 3c507 maps the shared memory window so that the last byte is
-	at 82586 address FFFF, the first byte is at 82586 address 0, 16K, 32K, or
-	48K corresponding to window sizes of 64K, 48K, 32K and 16K respectively.
-	We can account for this be setting the 'SBC Base' entry in the ISCP table
-	below for all the 16 bit offset addresses, and also adding the 'SCB Base'
-	value to all 24 bit physical addresses (in the SCP table and the TX and RX
-	Buffer Descriptors).
-					-Mark
-	*/
-#define SCB_BASE		((unsigned)64*1024 - (dev->mem_end - dev->mem_start))
-
-/*
-  What follows in 'init_words[]' is the "program" that is downloaded to the
-  82586 memory.	 It's mostly tables and command blocks, and starts at the
-  reset address 0xfffff6.  This is designed to be similar to the EtherExpress,
-  thus the unusual location of the SCB at 0x0008.
-
-  Even with the additional "don't care" values, doing it this way takes less
-  program space than initializing the individual tables, and I feel it's much
-  cleaner.
-
-  The databook is particularly useless for the first two structures, I had
-  to use the Crynwr driver as an example.
-
-   The memory setup is as follows:
-   */
-
-#define CONFIG_CMD	0x0018
-#define SET_SA_CMD	0x0024
-#define SA_OFFSET	0x002A
-#define IDLELOOP	0x30
-#define TDR_CMD		0x38
-#define TDR_TIME	0x3C
-#define DUMP_CMD	0x40
-#define DIAG_CMD	0x48
-#define SET_MC_CMD	0x4E
-#define DUMP_DATA	0x56	/* A 170 byte buffer for dump and Set-MC into. */
-
-#define TX_BUF_START	0x0100
-#define NUM_TX_BUFS 	5
-#define TX_BUF_SIZE 	(1518+14+20+16) /* packet+header+TBD */
-
-#define RX_BUF_START	0x2000
-#define RX_BUF_SIZE 	(1518+14+18)	/* packet+header+RBD */
-#define RX_BUF_END		(dev->mem_end - dev->mem_start)
-
-#define TX_TIMEOUT (HZ/20)
-
-/*
-  That's it: only 86 bytes to set up the beast, including every extra
-  command available.  The 170 byte buffer at DUMP_DATA is shared between the
-  Dump command (called only by the diagnostic program) and the SetMulticastList
-  command.
-
-  To complete the memory setup you only have to write the station address at
-  SA_OFFSET and create the Tx & Rx buffer lists.
-
-  The Tx command chain and buffer list is setup as follows:
-  A Tx command table, with the data buffer pointing to...
-  A Tx data buffer descriptor.  The packet is in a single buffer, rather than
-	chaining together several smaller buffers.
-  A NoOp command, which initially points to itself,
-  And the packet data.
-
-  A transmit is done by filling in the Tx command table and data buffer,
-  re-writing the NoOp command, and finally changing the offset of the last
-  command to point to the current Tx command.  When the Tx command is finished,
-  it jumps to the NoOp, when it loops until the next Tx command changes the
-  "link offset" in the NoOp.  This way the 82586 never has to go through the
-  slow restart sequence.
-
-  The Rx buffer list is set up in the obvious ring structure.  We have enough
-  memory (and low enough interrupt latency) that we can avoid the complicated
-  Rx buffer linked lists by alway associating a full-size Rx data buffer with
-  each Rx data frame.
-
-  I current use four transmit buffers starting at TX_BUF_START (0x0100), and
-  use the rest of memory, from RX_BUF_START to RX_BUF_END, for Rx buffers.
-
-  */
-
-static unsigned short init_words[] = {
-	/*	System Configuration Pointer (SCP). */
-	0x0000,					/* Set bus size to 16 bits. */
-	0,0,					/* pad words. */
-	0x0000,0x0000,			/* ISCP phys addr, set in init_82586_mem(). */
-
-	/*	Intermediate System Configuration Pointer (ISCP). */
-	0x0001,					/* Status word that's cleared when init is done. */
-	0x0008,0,0,				/* SCB offset, (skip, skip) */
-
-	/* System Control Block (SCB). */
-	0,0xf000|RX_START|CUC_START,	/* SCB status and cmd. */
-	CONFIG_CMD,				/* Command list pointer, points to Configure. */
-	RX_BUF_START,				/* Rx block list. */
-	0,0,0,0,				/* Error count: CRC, align, buffer, overrun. */
-
-	/* 0x0018: Configure command.  Change to put MAC data with packet. */
-	0, CmdConfigure,		/* Status, command.		*/
-	SET_SA_CMD,				/* Next command is Set Station Addr. */
-	0x0804,					/* "4" bytes of config data, 8 byte FIFO. */
-	0x2e40,					/* Magic values, including MAC data location. */
-	0,						/* Unused pad word. */
-
-	/* 0x0024: Setup station address command. */
-	0, CmdSASetup,
-	SET_MC_CMD,				/* Next command. */
-	0xaa00,0xb000,0x0bad,	/* Station address (to be filled in) */
-
-	/* 0x0030: NOP, looping back to itself.	 Point to first Tx buffer to Tx. */
-	0, CmdNOp, IDLELOOP, 0 /* pad */,
-
-	/* 0x0038: A unused Time-Domain Reflectometer command. */
-	0, CmdTDR, IDLELOOP, 0,
-
-	/* 0x0040: An unused Dump State command. */
-	0, CmdDump, IDLELOOP, DUMP_DATA,
-
-	/* 0x0048: An unused Diagnose command. */
-	0, CmdDiagnose, IDLELOOP,
-
-	/* 0x004E: An empty set-multicast-list command. */
-	0, CmdMulticastList, IDLELOOP, 0,
-};
-
-/* Index to functions, as function prototypes. */
-
-static int	el16_probe1(struct net_device *dev, int ioaddr);
-static int	el16_open(struct net_device *dev);
-static netdev_tx_t el16_send_packet(struct sk_buff *skb,
-				    struct net_device *dev);
-static irqreturn_t el16_interrupt(int irq, void *dev_id);
-static void el16_rx(struct net_device *dev);
-static int	el16_close(struct net_device *dev);
-static void el16_tx_timeout (struct net_device *dev);
-
-static void hardware_send_packet(struct net_device *dev, void *buf, short length, short pad);
-static void init_82586_mem(struct net_device *dev);
-static const struct ethtool_ops netdev_ethtool_ops;
-static void init_rx_bufs(struct net_device *);
-
-static int io = 0x300;
-static int irq;
-static int mem_start;
-
-
-/* Check for a network adaptor of this type, and return '0' iff one exists.
-	If dev->base_addr == 0, probe all likely locations.
-	If dev->base_addr == 1, always return failure.
-	If dev->base_addr == 2, (detachable devices only) allocate space for the
-	device and return success.
-	*/
-
-struct net_device * __init el16_probe(int unit)
-{
-	struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
-	static const unsigned ports[] = { 0x300, 0x320, 0x340, 0x280, 0};
-	const unsigned *port;
-	int err = -ENODEV;
-
-	if (!dev)
-		return ERR_PTR(-ENODEV);
-
-	if (unit >= 0) {
-		sprintf(dev->name, "eth%d", unit);
-		netdev_boot_setup_check(dev);
-		io = dev->base_addr;
-		irq = dev->irq;
-		mem_start = dev->mem_start & 15;
-	}
-
-	if (io > 0x1ff) 	/* Check a single specified location. */
-		err = el16_probe1(dev, io);
-	else if (io != 0)
-		err = -ENXIO;		/* Don't probe at all. */
-	else {
-		for (port = ports; *port; port++) {
-			err = el16_probe1(dev, *port);
-			if (!err)
-				break;
-		}
-	}
-
-	if (err)
-		goto out;
-	err = register_netdev(dev);
-	if (err)
-		goto out1;
-	return dev;
-out1:
-	free_irq(dev->irq, dev);
-	iounmap(((struct net_local *)netdev_priv(dev))->base);
-	release_region(dev->base_addr, EL16_IO_EXTENT);
-out:
-	free_netdev(dev);
-	return ERR_PTR(err);
-}
-
-static const struct net_device_ops netdev_ops = {
-	.ndo_open		= el16_open,
-	.ndo_stop		= el16_close,
-	.ndo_start_xmit 	= el16_send_packet,
-	.ndo_tx_timeout 	= el16_tx_timeout,
-	.ndo_change_mtu		= eth_change_mtu,
-	.ndo_set_mac_address 	= eth_mac_addr,
-	.ndo_validate_addr	= eth_validate_addr,
-};
-
-static int __init el16_probe1(struct net_device *dev, int ioaddr)
-{
-	static unsigned char init_ID_done;
-	int i, irq, irqval, retval;
-	struct net_local *lp;
-
-	if (init_ID_done == 0) {
-		ushort lrs_state = 0xff;
-		/* Send the ID sequence to the ID_PORT to enable the board(s). */
-		outb(0x00, ID_PORT);
-		for(i = 0; i < 255; i++) {
-			outb(lrs_state, ID_PORT);
-			lrs_state <<= 1;
-			if (lrs_state & 0x100)
-				lrs_state ^= 0xe7;
-		}
-		outb(0x00, ID_PORT);
-		init_ID_done = 1;
-	}
-
-	if (!request_region(ioaddr, EL16_IO_EXTENT, DRV_NAME))
-		return -ENODEV;
-
-	if ((inb(ioaddr) != '*') || (inb(ioaddr + 1) != '3') ||
-	    (inb(ioaddr + 2) != 'C') || (inb(ioaddr + 3) != 'O')) {
-		retval = -ENODEV;
-		goto out;
-	}
-
-	pr_info("%s: 3c507 at %#x,", dev->name, ioaddr);
-
-	/* We should make a few more checks here, like the first three octets of
-	   the S.A. for the manufacturer's code. */
-
-	irq = inb(ioaddr + IRQ_CONFIG) & 0x0f;
-
-	irqval = request_irq(irq, el16_interrupt, 0, DRV_NAME, dev);
-	if (irqval) {
-		pr_cont("\n");
-		pr_err("3c507: unable to get IRQ %d (irqval=%d).\n", irq, irqval);
-		retval = -EAGAIN;
-		goto out;
-	}
-
-	/* We've committed to using the board, and can start filling in *dev. */
-	dev->base_addr = ioaddr;
-
-	outb(0x01, ioaddr + MISC_CTRL);
-	for (i = 0; i < 6; i++)
-		dev->dev_addr[i] = inb(ioaddr + i);
-	pr_cont(" %pM", dev->dev_addr);
-
-	if (mem_start)
-		net_debug = mem_start & 7;
-
-#ifdef MEM_BASE
-	dev->mem_start = MEM_BASE;
-	dev->mem_end = dev->mem_start + 0x10000;
-#else
-	{
-		int base;
-		int size;
-		char mem_config = inb(ioaddr + MEM_CONFIG);
-		if (mem_config & 0x20) {
-			size = 64*1024;
-			base = 0xf00000 + (mem_config & 0x08 ? 0x080000
-							   : ((mem_config & 3) << 17));
-		} else {
-			size = ((mem_config & 3) + 1) << 14;
-			base = 0x0c0000 + ( (mem_config & 0x18) << 12);
-		}
-		dev->mem_start = base;
-		dev->mem_end = base + size;
-	}
-#endif
-
-	dev->if_port = (inb(ioaddr + ROM_CONFIG) & 0x80) ? 1 : 0;
-	dev->irq = inb(ioaddr + IRQ_CONFIG) & 0x0f;
-
-	pr_cont(", IRQ %d, %sternal xcvr, memory %#lx-%#lx.\n", dev->irq,
-		   dev->if_port ? "ex" : "in", dev->mem_start, dev->mem_end-1);
-
-	if (net_debug)
-		pr_debug("%s", version);
-
-	lp = netdev_priv(dev);
-	spin_lock_init(&lp->lock);
-	lp->base = ioremap(dev->mem_start, RX_BUF_END);
-	if (!lp->base) {
-		pr_err("3c507: unable to remap memory\n");
-		retval = -EAGAIN;
-		goto out1;
-	}
-
-	dev->netdev_ops = &netdev_ops;
-	dev->watchdog_timeo = TX_TIMEOUT;
-	dev->ethtool_ops = &netdev_ethtool_ops;
- 	dev->flags &= ~IFF_MULTICAST;	/* Multicast doesn't work */
-	return 0;
-out1:
-	free_irq(dev->irq, dev);
-out:
-	release_region(ioaddr, EL16_IO_EXTENT);
-	return retval;
-}
-
-static int el16_open(struct net_device *dev)
-{
-	/* Initialize the 82586 memory and start it. */
-	init_82586_mem(dev);
-
-	netif_start_queue(dev);
-	return 0;
-}
-
-
-static void el16_tx_timeout (struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	int ioaddr = dev->base_addr;
-	void __iomem *shmem = lp->base;
-
-	if (net_debug > 1)
-		pr_debug("%s: transmit timed out, %s?  ", dev->name,
-			readw(shmem + iSCB_STATUS) & 0x8000 ? "IRQ conflict" :
-			"network cable problem");
-	/* Try to restart the adaptor. */
-	if (lp->last_restart == dev->stats.tx_packets) {
-		if (net_debug > 1)
-			pr_cont("Resetting board.\n");
-		/* Completely reset the adaptor. */
-		init_82586_mem (dev);
-		lp->tx_pkts_in_ring = 0;
-	} else {
-		/* Issue the channel attention signal and hope it "gets better". */
-		if (net_debug > 1)
-			pr_cont("Kicking board.\n");
-		writew(0xf000 | CUC_START | RX_START, shmem + iSCB_CMD);
-		outb (0, ioaddr + SIGNAL_CA);	/* Issue channel-attn. */
-		lp->last_restart = dev->stats.tx_packets;
-	}
-	dev->trans_start = jiffies; /* prevent tx timeout */
-	netif_wake_queue (dev);
-}
-
-
-static netdev_tx_t el16_send_packet (struct sk_buff *skb,
-				     struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	int ioaddr = dev->base_addr;
-	unsigned long flags;
-	short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
-	unsigned char *buf = skb->data;
-
-	netif_stop_queue (dev);
-
-	spin_lock_irqsave (&lp->lock, flags);
-
-	dev->stats.tx_bytes += length;
-	/* Disable the 82586's input to the interrupt line. */
-	outb (0x80, ioaddr + MISC_CTRL);
-
-	hardware_send_packet (dev, buf, skb->len, length - skb->len);
-
-	/* Enable the 82586 interrupt input. */
-	outb (0x84, ioaddr + MISC_CTRL);
-
-	spin_unlock_irqrestore (&lp->lock, flags);
-
-	dev_kfree_skb (skb);
-
-	/* You might need to clean up and record Tx statistics here. */
-
-	return NETDEV_TX_OK;
-}
-
-/*	The typical workload of the driver:
-	Handle the network interface interrupts. */
-static irqreturn_t el16_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-	struct net_local *lp;
-	int ioaddr, status, boguscount = 0;
-	ushort ack_cmd = 0;
-	void __iomem *shmem;
-
-	if (dev == NULL) {
-		pr_err("net_interrupt(): irq %d for unknown device.\n", irq);
-		return IRQ_NONE;
-	}
-
-	ioaddr = dev->base_addr;
-	lp = netdev_priv(dev);
-	shmem = lp->base;
-
-	spin_lock(&lp->lock);
-
-	status = readw(shmem+iSCB_STATUS);
-
-	if (net_debug > 4) {
-		pr_debug("%s: 3c507 interrupt, status %4.4x.\n", dev->name, status);
-	}
-
-	/* Disable the 82586's input to the interrupt line. */
-	outb(0x80, ioaddr + MISC_CTRL);
-
-	/* Reap the Tx packet buffers. */
-	while (lp->tx_pkts_in_ring) {
-	  unsigned short tx_status = readw(shmem+lp->tx_reap);
-	  if (!(tx_status & 0x8000)) {
-		if (net_debug > 5)
-			pr_debug("Tx command incomplete (%#x).\n", lp->tx_reap);
-		break;
-	  }
-	  /* Tx unsuccessful or some interesting status bit set. */
-	  if (!(tx_status & 0x2000) || (tx_status & 0x0f3f)) {
-		dev->stats.tx_errors++;
-		if (tx_status & 0x0600)  dev->stats.tx_carrier_errors++;
-		if (tx_status & 0x0100)  dev->stats.tx_fifo_errors++;
-		if (!(tx_status & 0x0040))  dev->stats.tx_heartbeat_errors++;
-		if (tx_status & 0x0020)  dev->stats.tx_aborted_errors++;
-		dev->stats.collisions += tx_status & 0xf;
-	  }
-	  dev->stats.tx_packets++;
-	  if (net_debug > 5)
-		  pr_debug("Reaped %x, Tx status %04x.\n" , lp->tx_reap, tx_status);
-	  lp->tx_reap += TX_BUF_SIZE;
-	  if (lp->tx_reap > RX_BUF_START - TX_BUF_SIZE)
-		lp->tx_reap = TX_BUF_START;
-
-	  lp->tx_pkts_in_ring--;
-	  /* There is always more space in the Tx ring buffer now. */
-	  netif_wake_queue(dev);
-
-	  if (++boguscount > 10)
-		break;
-	}
-
-	if (status & 0x4000) { /* Packet received. */
-		if (net_debug > 5)
-			pr_debug("Received packet, rx_head %04x.\n", lp->rx_head);
-		el16_rx(dev);
-	}
-
-	/* Acknowledge the interrupt sources. */
-	ack_cmd = status & 0xf000;
-
-	if ((status & 0x0700) != 0x0200 && netif_running(dev)) {
-		if (net_debug)
-			pr_debug("%s: Command unit stopped, status %04x, restarting.\n",
-				   dev->name, status);
-		/* If this ever occurs we should really re-write the idle loop, reset
-		   the Tx list, and do a complete restart of the command unit.
-		   For now we rely on the Tx timeout if the resume doesn't work. */
-		ack_cmd |= CUC_RESUME;
-	}
-
-	if ((status & 0x0070) != 0x0040 && netif_running(dev)) {
-		/* The Rx unit is not ready, it must be hung.  Restart the receiver by
-		   initializing the rx buffers, and issuing an Rx start command. */
-		if (net_debug)
-			pr_debug("%s: Rx unit stopped, status %04x, restarting.\n",
-				   dev->name, status);
-		init_rx_bufs(dev);
-		writew(RX_BUF_START,shmem+iSCB_RFA);
-		ack_cmd |= RX_START;
-	}
-
-	writew(ack_cmd,shmem+iSCB_CMD);
-	outb(0, ioaddr + SIGNAL_CA);			/* Issue channel-attn. */
-
-	/* Clear the latched interrupt. */
-	outb(0, ioaddr + RESET_IRQ);
-
-	/* Enable the 82586's interrupt input. */
-	outb(0x84, ioaddr + MISC_CTRL);
-	spin_unlock(&lp->lock);
-	return IRQ_HANDLED;
-}
-
-static int el16_close(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	int ioaddr = dev->base_addr;
-	void __iomem *shmem = lp->base;
-
-	netif_stop_queue(dev);
-
-	/* Flush the Tx and disable Rx. */
-	writew(RX_SUSPEND | CUC_SUSPEND,shmem+iSCB_CMD);
-	outb(0, ioaddr + SIGNAL_CA);
-
-	/* Disable the 82586's input to the interrupt line. */
-	outb(0x80, ioaddr + MISC_CTRL);
-
-	/* We always physically use the IRQ line, so we don't do free_irq(). */
-
-	/* Update the statistics here. */
-
-	return 0;
-}
-
-/* Initialize the Rx-block list. */
-static void init_rx_bufs(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	void __iomem *write_ptr;
-	unsigned short SCB_base = SCB_BASE;
-
-	int cur_rxbuf = lp->rx_head = RX_BUF_START;
-
-	/* Initialize each Rx frame + data buffer. */
-	do {	/* While there is room for one more. */
-
-		write_ptr = lp->base + cur_rxbuf;
-
-		writew(0x0000,write_ptr);			/* Status */
-		writew(0x0000,write_ptr+=2);			/* Command */
-		writew(cur_rxbuf + RX_BUF_SIZE,write_ptr+=2);	/* Link */
-		writew(cur_rxbuf + 22,write_ptr+=2);		/* Buffer offset */
-		writew(0x0000,write_ptr+=2);			/* Pad for dest addr. */
-		writew(0x0000,write_ptr+=2);
-		writew(0x0000,write_ptr+=2);
-		writew(0x0000,write_ptr+=2);			/* Pad for source addr. */
-		writew(0x0000,write_ptr+=2);
-		writew(0x0000,write_ptr+=2);
-		writew(0x0000,write_ptr+=2);			/* Pad for protocol. */
-
-		writew(0x0000,write_ptr+=2);			/* Buffer: Actual count */
-		writew(-1,write_ptr+=2);			/* Buffer: Next (none). */
-		writew(cur_rxbuf + 0x20 + SCB_base,write_ptr+=2);/* Buffer: Address low */
-		writew(0x0000,write_ptr+=2);
-		/* Finally, the number of bytes in the buffer. */
-		writew(0x8000 + RX_BUF_SIZE-0x20,write_ptr+=2);
-
-		lp->rx_tail = cur_rxbuf;
-		cur_rxbuf += RX_BUF_SIZE;
-	} while (cur_rxbuf <= RX_BUF_END - RX_BUF_SIZE);
-
-	/* Terminate the list by setting the EOL bit, and wrap the pointer to make
-	   the list a ring. */
-	write_ptr = lp->base + lp->rx_tail + 2;
-	writew(0xC000,write_ptr);				/* Command, mark as last. */
-	writew(lp->rx_head,write_ptr+2);			/* Link */
-}
-
-static void init_82586_mem(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	short ioaddr = dev->base_addr;
-	void __iomem *shmem = lp->base;
-
-	/* Enable loopback to protect the wire while starting up,
-	   and hold the 586 in reset during the memory initialization. */
-	outb(0x20, ioaddr + MISC_CTRL);
-
-	/* Fix the ISCP address and base. */
-	init_words[3] = SCB_BASE;
-	init_words[7] = SCB_BASE;
-
-	/* Write the words at 0xfff6 (address-aliased to 0xfffff6). */
-	memcpy_toio(lp->base + RX_BUF_END - 10, init_words, 10);
-
-	/* Write the words at 0x0000. */
-	memcpy_toio(lp->base, init_words + 5, sizeof(init_words) - 10);
-
-	/* Fill in the station address. */
-	memcpy_toio(lp->base+SA_OFFSET, dev->dev_addr, ETH_ALEN);
-
-	/* The Tx-block list is written as needed.  We just set up the values. */
-	lp->tx_cmd_link = IDLELOOP + 4;
-	lp->tx_head = lp->tx_reap = TX_BUF_START;
-
-	init_rx_bufs(dev);
-
-	/* Start the 586 by releasing the reset line, but leave loopback. */
-	outb(0xA0, ioaddr + MISC_CTRL);
-
-	/* This was time consuming to track down: you need to give two channel
-	   attention signals to reliably start up the i82586. */
-	outb(0, ioaddr + SIGNAL_CA);
-
-	{
-		int boguscnt = 50;
-		while (readw(shmem+iSCB_STATUS) == 0)
-			if (--boguscnt == 0) {
-				pr_warning("%s: i82586 initialization timed out with status %04x, cmd %04x.\n",
-					dev->name, readw(shmem+iSCB_STATUS), readw(shmem+iSCB_CMD));
-				break;
-			}
-		/* Issue channel-attn -- the 82586 won't start. */
-		outb(0, ioaddr + SIGNAL_CA);
-	}
-
-	/* Disable loopback and enable interrupts. */
-	outb(0x84, ioaddr + MISC_CTRL);
-	if (net_debug > 4)
-		pr_debug("%s: Initialized 82586, status %04x.\n", dev->name,
-			   readw(shmem+iSCB_STATUS));
-}
-
-static void hardware_send_packet(struct net_device *dev, void *buf, short length, short pad)
-{
-	struct net_local *lp = netdev_priv(dev);
-	short ioaddr = dev->base_addr;
-	ushort tx_block = lp->tx_head;
-	void __iomem *write_ptr = lp->base + tx_block;
-	static char padding[ETH_ZLEN];
-
-	/* Set the write pointer to the Tx block, and put out the header. */
-	writew(0x0000,write_ptr);			/* Tx status */
-	writew(CMD_INTR|CmdTx,write_ptr+=2);		/* Tx command */
-	writew(tx_block+16,write_ptr+=2);		/* Next command is a NoOp. */
-	writew(tx_block+8,write_ptr+=2);			/* Data Buffer offset. */
-
-	/* Output the data buffer descriptor. */
-	writew((pad + length) | 0x8000,write_ptr+=2);		/* Byte count parameter. */
-	writew(-1,write_ptr+=2);			/* No next data buffer. */
-	writew(tx_block+22+SCB_BASE,write_ptr+=2);	/* Buffer follows the NoOp command. */
-	writew(0x0000,write_ptr+=2);			/* Buffer address high bits (always zero). */
-
-	/* Output the Loop-back NoOp command. */
-	writew(0x0000,write_ptr+=2);			/* Tx status */
-	writew(CmdNOp,write_ptr+=2);			/* Tx command */
-	writew(tx_block+16,write_ptr+=2);		/* Next is myself. */
-
-	/* Output the packet at the write pointer. */
-	memcpy_toio(write_ptr+2, buf, length);
-	if (pad)
-		memcpy_toio(write_ptr+length+2, padding, pad);
-
-	/* Set the old command link pointing to this send packet. */
-	writew(tx_block,lp->base + lp->tx_cmd_link);
-	lp->tx_cmd_link = tx_block + 20;
-
-	/* Set the next free tx region. */
-	lp->tx_head = tx_block + TX_BUF_SIZE;
-	if (lp->tx_head > RX_BUF_START - TX_BUF_SIZE)
-		lp->tx_head = TX_BUF_START;
-
-	if (net_debug > 4) {
-		pr_debug("%s: 3c507 @%x send length = %d, tx_block %3x, next %3x.\n",
-			   dev->name, ioaddr, length, tx_block, lp->tx_head);
-	}
-
-	/* Grimly block further packets if there has been insufficient reaping. */
-	if (++lp->tx_pkts_in_ring < NUM_TX_BUFS)
-		netif_wake_queue(dev);
-}
-
-static void el16_rx(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	void __iomem *shmem = lp->base;
-	ushort rx_head = lp->rx_head;
-	ushort rx_tail = lp->rx_tail;
-	ushort boguscount = 10;
-	short frame_status;
-
-	while ((frame_status = readw(shmem+rx_head)) < 0) {   /* Command complete */
-		void __iomem *read_frame = lp->base + rx_head;
-		ushort rfd_cmd = readw(read_frame+2);
-		ushort next_rx_frame = readw(read_frame+4);
-		ushort data_buffer_addr = readw(read_frame+6);
-		void __iomem *data_frame = lp->base + data_buffer_addr;
-		ushort pkt_len = readw(data_frame);
-
-		if (rfd_cmd != 0 || data_buffer_addr != rx_head + 22 ||
-		    (pkt_len & 0xC000) != 0xC000) {
-			pr_err("%s: Rx frame at %#x corrupted, "
-			       "status %04x cmd %04x next %04x "
-			       "data-buf @%04x %04x.\n",
-			       dev->name, rx_head, frame_status, rfd_cmd,
-			       next_rx_frame, data_buffer_addr, pkt_len);
-		} else if ((frame_status & 0x2000) == 0) {
-			/* Frame Rxed, but with error. */
-			dev->stats.rx_errors++;
-			if (frame_status & 0x0800) dev->stats.rx_crc_errors++;
-			if (frame_status & 0x0400) dev->stats.rx_frame_errors++;
-			if (frame_status & 0x0200) dev->stats.rx_fifo_errors++;
-			if (frame_status & 0x0100) dev->stats.rx_over_errors++;
-			if (frame_status & 0x0080) dev->stats.rx_length_errors++;
-		} else {
-			/* Malloc up new buffer. */
-			struct sk_buff *skb;
-
-			pkt_len &= 0x3fff;
-			skb = dev_alloc_skb(pkt_len+2);
-			if (skb == NULL) {
-				pr_err("%s: Memory squeeze, dropping packet.\n",
-				       dev->name);
-				dev->stats.rx_dropped++;
-				break;
-			}
-
-			skb_reserve(skb,2);
-
-			/* 'skb->data' points to the start of sk_buff data area. */
-			memcpy_fromio(skb_put(skb,pkt_len), data_frame + 10, pkt_len);
-
-			skb->protocol=eth_type_trans(skb,dev);
-			netif_rx(skb);
-			dev->stats.rx_packets++;
-			dev->stats.rx_bytes += pkt_len;
-		}
-
-		/* Clear the status word and set End-of-List on the rx frame. */
-		writew(0,read_frame);
-		writew(0xC000,read_frame+2);
-		/* Clear the end-of-list on the prev. RFD. */
-		writew(0x0000,lp->base + rx_tail + 2);
-
-		rx_tail = rx_head;
-		rx_head = next_rx_frame;
-		if (--boguscount == 0)
-			break;
-	}
-
-	lp->rx_head = rx_head;
-	lp->rx_tail = rx_tail;
-}
-
-static void netdev_get_drvinfo(struct net_device *dev,
-			       struct ethtool_drvinfo *info)
-{
-	strcpy(info->driver, DRV_NAME);
-	strcpy(info->version, DRV_VERSION);
-	sprintf(info->bus_info, "ISA 0x%lx", dev->base_addr);
-}
-
-static u32 netdev_get_msglevel(struct net_device *dev)
-{
-	return debug;
-}
-
-static void netdev_set_msglevel(struct net_device *dev, u32 level)
-{
-	debug = level;
-}
-
-static const struct ethtool_ops netdev_ethtool_ops = {
-	.get_drvinfo		= netdev_get_drvinfo,
-	.get_msglevel		= netdev_get_msglevel,
-	.set_msglevel		= netdev_set_msglevel,
-};
-
-#ifdef MODULE
-static struct net_device *dev_3c507;
-module_param(io, int, 0);
-module_param(irq, int, 0);
-MODULE_PARM_DESC(io, "EtherLink16 I/O base address");
-MODULE_PARM_DESC(irq, "(ignored)");
-
-int __init init_module(void)
-{
-	if (io == 0)
-		pr_notice("3c507: You should not use auto-probing with insmod!\n");
-	dev_3c507 = el16_probe(-1);
-	return IS_ERR(dev_3c507) ? PTR_ERR(dev_3c507) : 0;
-}
-
-void __exit
-cleanup_module(void)
-{
-	struct net_device *dev = dev_3c507;
-	unregister_netdev(dev);
-	free_irq(dev->irq, dev);
-	iounmap(((struct net_local *)netdev_priv(dev))->base);
-	release_region(dev->base_addr, EL16_IO_EXTENT);
-	free_netdev(dev);
-}
-#endif /* MODULE */
-MODULE_LICENSE("GPL");