[net-next-2.6.git] / drivers / net / smc-ultra.c

/* smc-ultra.c: A SMC Ultra ethernet driver for linux. */
/*
	This is a driver for the SMC Ultra and SMC EtherEZ ISA ethercards.

	Written 1993-1998 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

	This driver uses the cards in the 8390-compatible mode.
	Most of the run-time complexity is handled by the generic code in
	8390.c.  The code in this file is responsible for

		ultra_probe()	 	Detecting and initializing the card.
		ultra_probe1()
		ultra_probe_isapnp()

		ultra_open()		The card-specific details of starting, stopping
		ultra_reset_8390()	and resetting the 8390 NIC core.
		ultra_close()

		ultra_block_input()		Routines for reading and writing blocks of
		ultra_block_output()	packet buffer memory.
		ultra_pio_input()
		ultra_pio_output()

	This driver enables the shared memory only when doing the actual data
	transfers to avoid a bug in early version of the card that corrupted
	data transferred by a AHA1542.

	This driver now supports the programmed-I/O (PIO) data transfer mode of
	the EtherEZ. It does not use the non-8390-compatible "Altego" mode.
	That support (if available) is in smc-ez.c.

	Changelog:

	Paul Gortmaker	: multiple card support for module users.
	Donald Becker	: 4/17/96 PIO support, minor potential problems avoided.
	Donald Becker	: 6/6/96 correctly set auto-wrap bit.
	Alexander Sotirov : 1/20/01 Added support for ISAPnP cards

	Note about the ISA PnP support:

	This driver can not autoprobe for more than one SMC EtherEZ PnP card.
	You have to configure the second card manually through the /proc/isapnp
	interface and then load the module with an explicit io=0x___ option.
*/

static const char version[] =
	"smc-ultra.c:v2.02 2/3/98 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/isapnp.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>

#include <asm/io.h>
#include <asm/irq.h>
#include <asm/system.h>

#include "8390.h"

#define DRV_NAME "smc-ultra"

/* A zero-terminated list of I/O addresses to be probed. */
static unsigned int ultra_portlist[] __initdata =
{0x200, 0x220, 0x240, 0x280, 0x300, 0x340, 0x380, 0};

static int ultra_probe1(struct net_device *dev, int ioaddr);

#ifdef __ISAPNP__
static int ultra_probe_isapnp(struct net_device *dev);
#endif

static int ultra_open(struct net_device *dev);
static void ultra_reset_8390(struct net_device *dev);
static void ultra_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
						int ring_page);
static void ultra_block_input(struct net_device *dev, int count,
						  struct sk_buff *skb, int ring_offset);
static void ultra_block_output(struct net_device *dev, int count,
							const unsigned char *buf, const int start_page);
static void ultra_pio_get_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
						int ring_page);
static void ultra_pio_input(struct net_device *dev, int count,
						  struct sk_buff *skb, int ring_offset);
static void ultra_pio_output(struct net_device *dev, int count,
							 const unsigned char *buf, const int start_page);
static int ultra_close_card(struct net_device *dev);

#ifdef __ISAPNP__
static struct isapnp_device_id ultra_device_ids[] __initdata = {
        {       ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416),
                ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416),
                (long) "SMC EtherEZ (8416)" },
        { }	/* terminate list */
};

MODULE_DEVICE_TABLE(isapnp, ultra_device_ids);
#endif


#define START_PG		0x00	/* First page of TX buffer */

#define ULTRA_CMDREG	0		/* Offset to ASIC command register. */
#define	 ULTRA_RESET	0x80	/* Board reset, in ULTRA_CMDREG. */
#define	 ULTRA_MEMENB	0x40	/* Enable the shared memory. */
#define IOPD	0x02			/* I/O Pipe Data (16 bits), PIO operation. */
#define IOPA	0x07			/* I/O Pipe Address for PIO operation. */
#define ULTRA_NIC_OFFSET  16	/* NIC register offset from the base_addr. */
#define ULTRA_IO_EXTENT 32
#define EN0_ERWCNT		0x08	/* Early receive warning count. */

#ifdef CONFIG_NET_POLL_CONTROLLER
static void ultra_poll(struct net_device *dev)
{
	disable_irq(dev->irq);
	ei_interrupt(dev->irq, dev);
	enable_irq(dev->irq);
}
#endif
/*	Probe for the Ultra.  This looks like a 8013 with the station
	address PROM at I/O ports <base>+8 to <base>+13, with a checksum
	following.
*/

static int __init do_ultra_probe(struct net_device *dev)
{
	int i;
	int base_addr = dev->base_addr;
	int irq = dev->irq;

	if (base_addr > 0x1ff)		/* Check a single specified location. */
		return ultra_probe1(dev, base_addr);
	else if (base_addr != 0)	/* Don't probe at all. */
		return -ENXIO;

#ifdef __ISAPNP__
	/* Look for any installed ISAPnP cards */
	if (isapnp_present() && (ultra_probe_isapnp(dev) == 0))
		return 0;
#endif

	for (i = 0; ultra_portlist[i]; i++) {
		dev->irq = irq;
		if (ultra_probe1(dev, ultra_portlist[i]) == 0)
			return 0;
	}

	return -ENODEV;
}

#ifndef MODULE
struct net_device * __init ultra_probe(int unit)
{
	struct net_device *dev = alloc_ei_netdev();
	int err;

	if (!dev)
		return ERR_PTR(-ENOMEM);

	sprintf(dev->name, "eth%d", unit);
	netdev_boot_setup_check(dev);

	err = do_ultra_probe(dev);
	if (err)
		goto out;
	return dev;
out:
	free_netdev(dev);
	return ERR_PTR(err);
}
#endif

static const struct net_device_ops ultra_netdev_ops = {
	.ndo_open		= ultra_open,
	.ndo_stop		= ultra_close_card,

	.ndo_start_xmit		= ei_start_xmit,
	.ndo_tx_timeout		= ei_tx_timeout,
	.ndo_get_stats		= ei_get_stats,
	.ndo_set_multicast_list = ei_set_multicast_list,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_set_mac_address 	= eth_mac_addr,
	.ndo_change_mtu		= eth_change_mtu,
#ifdef CONFIG_NET_POLL_CONTROLLER
	.ndo_poll_controller 	= ultra_poll,
#endif
};

static int __init ultra_probe1(struct net_device *dev, int ioaddr)
{
	int i, retval;
	int checksum = 0;
	const char *model_name;
	unsigned char eeprom_irq = 0;
	static unsigned version_printed;
	/* Values from various config regs. */
	unsigned char num_pages, irqreg, addr, piomode;
	unsigned char idreg = inb(ioaddr + 7);
	unsigned char reg4 = inb(ioaddr + 4) & 0x7f;

	if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME))
		return -EBUSY;

	/* Check the ID nibble. */
	if ((idreg & 0xF0) != 0x20 			/* SMC Ultra */
		&& (idreg & 0xF0) != 0x40) {		/* SMC EtherEZ */
		retval = -ENODEV;
		goto out;
	}

	/* Select the station address register set. */
	outb(reg4, ioaddr + 4);

	for (i = 0; i < 8; i++)
		checksum += inb(ioaddr + 8 + i);
	if ((checksum & 0xff) != 0xFF) {
		retval = -ENODEV;
		goto out;
	}

	if (ei_debug  &&  version_printed++ == 0)
		printk(version);

	model_name = (idreg & 0xF0) == 0x20 ? "SMC Ultra" : "SMC EtherEZ";

	for (i = 0; i < 6; i++)
		dev->dev_addr[i] = inb(ioaddr + 8 + i);

	printk("%s: %s at %#3x, %pM", dev->name, model_name,
	       ioaddr, dev->dev_addr);

	/* Switch from the station address to the alternate register set and
	   read the useful registers there. */
	outb(0x80 | reg4, ioaddr + 4);

	/* Enabled FINE16 mode to avoid BIOS ROM width mismatches @ reboot. */
	outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);
	piomode = inb(ioaddr + 0x8);
	addr = inb(ioaddr + 0xb);
	irqreg = inb(ioaddr + 0xd);

	/* Switch back to the station address register set so that the MS-DOS driver
	   can find the card after a warm boot. */
	outb(reg4, ioaddr + 4);

	if (dev->irq < 2) {
		unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15};
		int irq;

		/* The IRQ bits are split. */
		irq = irqmap[((irqreg & 0x40) >> 4) + ((irqreg & 0x0c) >> 2)];

		if (irq == 0) {
			printk(", failed to detect IRQ line.\n");
			retval =  -EAGAIN;
			goto out;
		}
		dev->irq = irq;
		eeprom_irq = 1;
	}

	/* The 8390 isn't at the base address, so fake the offset */
	dev->base_addr = ioaddr+ULTRA_NIC_OFFSET;

	{
		int addr_tbl[4] = {0x0C0000, 0x0E0000, 0xFC0000, 0xFE0000};
		short num_pages_tbl[4] = {0x20, 0x40, 0x80, 0xff};

		dev->mem_start = ((addr & 0x0f) << 13) + addr_tbl[(addr >> 6) & 3] ;
		num_pages = num_pages_tbl[(addr >> 4) & 3];
	}

	ei_status.name = model_name;
	ei_status.word16 = 1;
	ei_status.tx_start_page = START_PG;
	ei_status.rx_start_page = START_PG + TX_PAGES;
	ei_status.stop_page = num_pages;

	ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG)*256);
	if (!ei_status.mem) {
		printk(", failed to ioremap.\n");
		retval =  -ENOMEM;
		goto out;
	}

	dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG)*256;

	if (piomode) {
		printk(",%s IRQ %d programmed-I/O mode.\n",
			   eeprom_irq ? "EEPROM" : "assigned ", dev->irq);
		ei_status.block_input = &ultra_pio_input;
		ei_status.block_output = &ultra_pio_output;
		ei_status.get_8390_hdr = &ultra_pio_get_hdr;
	} else {
		printk(",%s IRQ %d memory %#lx-%#lx.\n", eeprom_irq ? "" : "assigned ",
			   dev->irq, dev->mem_start, dev->mem_end-1);
		ei_status.block_input = &ultra_block_input;
		ei_status.block_output = &ultra_block_output;
		ei_status.get_8390_hdr = &ultra_get_8390_hdr;
	}
	ei_status.reset_8390 = &ultra_reset_8390;

	dev->netdev_ops = &ultra_netdev_ops;
	NS8390_init(dev, 0);

	retval = register_netdev(dev);
	if (retval)
		goto out;
	return 0;
out:
	release_region(ioaddr, ULTRA_IO_EXTENT);
	return retval;
}

#ifdef __ISAPNP__
static int __init ultra_probe_isapnp(struct net_device *dev)
{
        int i;

        for (i = 0; ultra_device_ids[i].vendor != 0; i++) {
		struct pnp_dev *idev = NULL;

                while ((idev = pnp_find_dev(NULL,
                                            ultra_device_ids[i].vendor,
                                            ultra_device_ids[i].function,
                                            idev))) {
                        /* Avoid already found cards from previous calls */
                        if (pnp_device_attach(idev) < 0)
                        	continue;
                        if (pnp_activate_dev(idev) < 0) {
                              __again:
                        	pnp_device_detach(idev);
                        	continue;
                        }
			/* if no io and irq, search for next */
			if (!pnp_port_valid(idev, 0) || !pnp_irq_valid(idev, 0))
				goto __again;
                        /* found it */
			dev->base_addr = pnp_port_start(idev, 0);
			dev->irq = pnp_irq(idev, 0);
                        printk(KERN_INFO "smc-ultra.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
                                (char *) ultra_device_ids[i].driver_data,
                                dev->base_addr, dev->irq);
                        if (ultra_probe1(dev, dev->base_addr) != 0) {      /* Shouldn't happen. */
                                printk(KERN_ERR "smc-ultra.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
                                pnp_device_detach(idev);
				return -ENXIO;
                        }
                        ei_status.priv = (unsigned long)idev;
                        break;
                }
                if (!idev)
                        continue;
                return 0;
        }

        return -ENODEV;
}
#endif

static int
ultra_open(struct net_device *dev)
{
	int retval;
	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	unsigned char irq2reg[] = {0, 0, 0x04, 0x08, 0, 0x0C, 0, 0x40,
				   0, 0x04, 0x44, 0x48, 0, 0, 0, 0x4C, };

	retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev);
	if (retval)
		return retval;

	outb(0x00, ioaddr);	/* Disable shared memory for safety. */
	outb(0x80, ioaddr + 5);
	/* Set the IRQ line. */
	outb(inb(ioaddr + 4) | 0x80, ioaddr + 4);
	outb((inb(ioaddr + 13) & ~0x4C) | irq2reg[dev->irq], ioaddr + 13);
	outb(inb(ioaddr + 4) & 0x7f, ioaddr + 4);

	if (ei_status.block_input == &ultra_pio_input) {
		outb(0x11, ioaddr + 6);		/* Enable interrupts and PIO. */
		outb(0x01, ioaddr + 0x19);  	/* Enable ring read auto-wrap. */
	} else
		outb(0x01, ioaddr + 6);		/* Enable interrupts and memory. */
	/* Set the early receive warning level in window 0 high enough not
	   to receive ERW interrupts. */
	outb_p(E8390_NODMA+E8390_PAGE0, dev->base_addr);
	outb(0xff, dev->base_addr + EN0_ERWCNT);
	ei_open(dev);
	return 0;
}

static void
ultra_reset_8390(struct net_device *dev)
{
	int cmd_port = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC base addr */

	outb(ULTRA_RESET, cmd_port);
	if (ei_debug > 1) printk("resetting Ultra, t=%ld...", jiffies);
	ei_status.txing = 0;

	outb(0x00, cmd_port);	/* Disable shared memory for safety. */
	outb(0x80, cmd_port + 5);
	if (ei_status.block_input == &ultra_pio_input)
		outb(0x11, cmd_port + 6);		/* Enable interrupts and PIO. */
	else
		outb(0x01, cmd_port + 6);		/* Enable interrupts and memory. */

	if (ei_debug > 1) printk("reset done\n");
}

/* Grab the 8390 specific header. Similar to the block_input routine, but
   we don't need to be concerned with ring wrap as the header will be at
   the start of a page, so we optimize accordingly. */

static void
ultra_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
	void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG)<<8);

	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);	/* shmem on */
#ifdef __BIG_ENDIAN
	/* Officially this is what we are doing, but the readl() is faster */
	/* unfortunately it isn't endian aware of the struct               */
	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	hdr->count = le16_to_cpu(hdr->count);
#else
	((unsigned int*)hdr)[0] = readl(hdr_start);
#endif
	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem off */
}

/* Block input and output are easy on shared memory ethercards, the only
   complication is when the ring buffer wraps. */

static void
ultra_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
{
	void __iomem *xfer_start = ei_status.mem + ring_offset - (START_PG<<8);

	/* Enable shared memory. */
	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);

	if (ring_offset + count > ei_status.stop_page*256) {
		/* We must wrap the input move. */
		int semi_count = ei_status.stop_page*256 - ring_offset;
		memcpy_fromio(skb->data, xfer_start, semi_count);
		count -= semi_count;
		memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
	} else {
		memcpy_fromio(skb->data, xfer_start, count);
	}

	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET);	/* Disable memory. */
}

static void
ultra_block_output(struct net_device *dev, int count, const unsigned char *buf,
				int start_page)
{
	void __iomem *shmem = ei_status.mem + ((start_page - START_PG)<<8);

	/* Enable shared memory. */
	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);

	memcpy_toio(shmem, buf, count);

	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
}

/* The identical operations for programmed I/O cards.
   The PIO model is trivial to use: the 16 bit start address is written
   byte-sequentially to IOPA, with no intervening I/O operations, and the
   data is read or written to the IOPD data port.
   The only potential complication is that the address register is shared
   and must be always be rewritten between each read/write direction change.
   This is no problem for us, as the 8390 code ensures that we are single
   threaded. */
static void ultra_pio_get_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
						int ring_page)
{
	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	outb(0x00, ioaddr + IOPA);	/* Set the address, LSB first. */
	outb(ring_page, ioaddr + IOPA);
	insw(ioaddr + IOPD, hdr, sizeof(struct e8390_pkt_hdr)>>1);
}

static void ultra_pio_input(struct net_device *dev, int count,
						  struct sk_buff *skb, int ring_offset)
{
	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
    char *buf = skb->data;

	/* For now set the address again, although it should already be correct. */
	outb(ring_offset, ioaddr + IOPA);	/* Set the address, LSB first. */
	outb(ring_offset >> 8, ioaddr + IOPA);
	/* We know skbuffs are padded to at least word alignment. */
	insw(ioaddr + IOPD, buf, (count+1)>>1);
}

static void ultra_pio_output(struct net_device *dev, int count,
							const unsigned char *buf, const int start_page)
{
	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	outb(0x00, ioaddr + IOPA);	/* Set the address, LSB first. */
	outb(start_page, ioaddr + IOPA);
	/* An extra odd byte is OK here as well. */
	outsw(ioaddr + IOPD, buf, (count+1)>>1);
}

static int
ultra_close_card(struct net_device *dev)
{
	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* CMDREG */

	netif_stop_queue(dev);

	if (ei_debug > 1)
		printk("%s: Shutting down ethercard.\n", dev->name);

	outb(0x00, ioaddr + 6);		/* Disable interrupts. */
	free_irq(dev->irq, dev);

	NS8390_init(dev, 0);

	/* We should someday disable shared memory and change to 8-bit mode
	   "just in case"... */

	return 0;
}


#ifdef MODULE
#define MAX_ULTRA_CARDS	4	/* Max number of Ultra cards per module */
static struct net_device *dev_ultra[MAX_ULTRA_CARDS];
static int io[MAX_ULTRA_CARDS];
static int irq[MAX_ULTRA_CARDS];

module_param_array(io, int, NULL, 0);
module_param_array(irq, int, NULL, 0);
MODULE_PARM_DESC(io, "I/O base address(es)");
MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
MODULE_DESCRIPTION("SMC Ultra/EtherEZ ISA/PnP Ethernet driver");
MODULE_LICENSE("GPL");

/* This is set up so that only a single autoprobe takes place per call.
ISA device autoprobes on a running machine are not recommended. */
int __init
init_module(void)
{
	struct net_device *dev;
	int this_dev, found = 0;

	for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
		if (io[this_dev] == 0)  {
			if (this_dev != 0) break; /* only autoprobe 1st one */
			printk(KERN_NOTICE "smc-ultra.c: Presently autoprobing (not recommended) for a single card.\n");
		}
		dev = alloc_ei_netdev();
		if (!dev)
			break;
		dev->irq = irq[this_dev];
		dev->base_addr = io[this_dev];
		if (do_ultra_probe(dev) == 0) {
			dev_ultra[found++] = dev;
			continue;
		}
		free_netdev(dev);
		printk(KERN_WARNING "smc-ultra.c: No SMC Ultra card found (i/o = 0x%x).\n", io[this_dev]);
		break;
	}
	if (found)
		return 0;
	return -ENXIO;
}

static void cleanup_card(struct net_device *dev)
{
	/* NB: ultra_close_card() does free_irq */
#ifdef __ISAPNP__
	struct pnp_dev *idev = (struct pnp_dev *)ei_status.priv;
	if (idev)
		pnp_device_detach(idev);
#endif
	release_region(dev->base_addr - ULTRA_NIC_OFFSET, ULTRA_IO_EXTENT);
	iounmap(ei_status.mem);
}

void __exit
cleanup_module(void)
{
	int this_dev;

	for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
		struct net_device *dev = dev_ultra[this_dev];
		if (dev) {
			unregister_netdev(dev);
			cleanup_card(dev);
			free_netdev(dev);
		}
	}
}
#endif /* MODULE */
Commit	Line	Data
1da177e4 LT	1	/* smc-ultra.c: A SMC Ultra ethernet driver for linux. */
	2	/*
	3	This is a driver for the SMC Ultra and SMC EtherEZ ISA ethercards.
	4
	5	Written 1993-1998 by Donald Becker.
	6
	7	Copyright 1993 United States Government as represented by the
	8	Director, National Security Agency.
	9
	10	This software may be used and distributed according to the terms
	11	of the GNU General Public License, incorporated herein by reference.
	12
	13	The author may be reached as becker@scyld.com, or C/O
	14	Scyld Computing Corporation
	15	410 Severn Ave., Suite 210
	16	Annapolis MD 21403
	17
	18	This driver uses the cards in the 8390-compatible mode.
	19	Most of the run-time complexity is handled by the generic code in
	20	8390.c. The code in this file is responsible for
	21
	22	ultra_probe() Detecting and initializing the card.
	23	ultra_probe1()
	24	ultra_probe_isapnp()
	25
	26	ultra_open() The card-specific details of starting, stopping
	27	ultra_reset_8390() and resetting the 8390 NIC core.
	28	ultra_close()
	29
	30	ultra_block_input() Routines for reading and writing blocks of
	31	ultra_block_output() packet buffer memory.
	32	ultra_pio_input()
	33	ultra_pio_output()
	34
	35	This driver enables the shared memory only when doing the actual data
	36	transfers to avoid a bug in early version of the card that corrupted
	37	data transferred by a AHA1542.
	38
	39	This driver now supports the programmed-I/O (PIO) data transfer mode of
	40	the EtherEZ. It does not use the non-8390-compatible "Altego" mode.
	41	That support (if available) is in smc-ez.c.
	42
	43	Changelog:
	44
	45	Paul Gortmaker : multiple card support for module users.
	46	Donald Becker : 4/17/96 PIO support, minor potential problems avoided.
	47	Donald Becker : 6/6/96 correctly set auto-wrap bit.
	48	Alexander Sotirov : 1/20/01 Added support for ISAPnP cards
	49
	50	Note about the ISA PnP support:
	51
	52	This driver can not autoprobe for more than one SMC EtherEZ PnP card.
	53	You have to configure the second card manually through the /proc/isapnp
	54	interface and then load the module with an explicit io=0x___ option.
	55	*/
	56
	57	static const char version[] =
	58	"smc-ultra.c:v2.02 2/3/98 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
	59
1da177e4 LT	60	#include <linux/module.h>
	61	#include <linux/kernel.h>
	62	#include <linux/errno.h>
	63	#include <linux/string.h>
	64	#include <linux/init.h>
	65	#include <linux/isapnp.h>
	66	#include <linux/netdevice.h>
	67	#include <linux/etherdevice.h>
	68
	69	#include <asm/io.h>
bf4e70e5	70	#include <asm/irq.h>
1da177e4 LT	71	#include <asm/system.h>
	72
	73	#include "8390.h"
	74
	75	#define DRV_NAME "smc-ultra"
	76
	77	/* A zero-terminated list of I/O addresses to be probed. */
	78	static unsigned int ultra_portlist[] __initdata =
	79	{0x200, 0x220, 0x240, 0x280, 0x300, 0x340, 0x380, 0};
	80
	81	static int ultra_probe1(struct net_device *dev, int ioaddr);
	82
	83	#ifdef __ISAPNP__
	84	static int ultra_probe_isapnp(struct net_device *dev);
	85	#endif
	86
	87	static int ultra_open(struct net_device *dev);
	88	static void ultra_reset_8390(struct net_device *dev);
	89	static void ultra_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr,
	90	int ring_page);
	91	static void ultra_block_input(struct net_device *dev, int count,
	92	struct sk_buff *skb, int ring_offset);
	93	static void ultra_block_output(struct net_device *dev, int count,
	94	const unsigned char *buf, const int start_page);
	95	static void ultra_pio_get_hdr(struct net_device dev, struct e8390_pkt_hdr hdr,
	96	int ring_page);
	97	static void ultra_pio_input(struct net_device *dev, int count,
	98	struct sk_buff *skb, int ring_offset);
	99	static void ultra_pio_output(struct net_device *dev, int count,
	100	const unsigned char *buf, const int start_page);
	101	static int ultra_close_card(struct net_device *dev);
	102
	103	#ifdef __ISAPNP__
	104	static struct isapnp_device_id ultra_device_ids[] __initdata = {
	105	{ ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416),
	106	ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416),
	107	(long) "SMC EtherEZ (8416)" },
	108	{ } /* terminate list */
	109	};
	110
	111	MODULE_DEVICE_TABLE(isapnp, ultra_device_ids);
	112	#endif
	113
6aa20a22	114
1da177e4 LT	115	#define START_PG 0x00 /* First page of TX buffer */
	116
	117	#define ULTRA_CMDREG 0 /* Offset to ASIC command register. */
	118	#define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */
	119	#define ULTRA_MEMENB 0x40 /* Enable the shared memory. */
	120	#define IOPD 0x02 /* I/O Pipe Data (16 bits), PIO operation. */
	121	#define IOPA 0x07 /* I/O Pipe Address for PIO operation. */
	122	#define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
	123	#define ULTRA_IO_EXTENT 32
	124	#define EN0_ERWCNT 0x08 /* Early receive warning count. */
6aa20a22	125
1da177e4 LT	126	#ifdef CONFIG_NET_POLL_CONTROLLER
	127	static void ultra_poll(struct net_device *dev)
	128	{
	129	disable_irq(dev->irq);
7d12e780	130	ei_interrupt(dev->irq, dev);
1da177e4 LT	131	enable_irq(dev->irq);
	132	}
	133	#endif
	134	/* Probe for the Ultra. This looks like a 8013 with the station
	135	address PROM at I/O ports <base>+8 to <base>+13, with a checksum
	136	following.
	137	*/
	138
	139	static int __init do_ultra_probe(struct net_device *dev)
	140	{
	141	int i;
	142	int base_addr = dev->base_addr;
	143	int irq = dev->irq;
	144
1da177e4 LT	145	if (base_addr > 0x1ff) /* Check a single specified location. */
	146	return ultra_probe1(dev, base_addr);
	147	else if (base_addr != 0) /* Don't probe at all. */
	148	return -ENXIO;
	149
	150	#ifdef __ISAPNP__
	151	/* Look for any installed ISAPnP cards */
	152	if (isapnp_present() && (ultra_probe_isapnp(dev) == 0))
	153	return 0;
	154	#endif
	155
	156	for (i = 0; ultra_portlist[i]; i++) {
	157	dev->irq = irq;
	158	if (ultra_probe1(dev, ultra_portlist[i]) == 0)
	159	return 0;
	160	}
	161
	162	return -ENODEV;
	163	}
	164
1da177e4 LT	165	#ifndef MODULE
	166	struct net_device * __init ultra_probe(int unit)
	167	{
	168	struct net_device *dev = alloc_ei_netdev();
	169	int err;
	170
	171	if (!dev)
	172	return ERR_PTR(-ENOMEM);
	173
	174	sprintf(dev->name, "eth%d", unit);
	175	netdev_boot_setup_check(dev);
	176
	177	err = do_ultra_probe(dev);
	178	if (err)
	179	goto out;
1da177e4	180	return dev;
1da177e4 LT	181	out:
	182	free_netdev(dev);
	183	return ERR_PTR(err);
	184	}
	185	#endif
	186
d079841d SH	187	static const struct net_device_ops ultra_netdev_ops = {
	188	.ndo_open = ultra_open,
	189	.ndo_stop = ultra_close_card,
	190
	191	.ndo_start_xmit = ei_start_xmit,
	192	.ndo_tx_timeout = ei_tx_timeout,
	193	.ndo_get_stats = ei_get_stats,
	194	.ndo_set_multicast_list = ei_set_multicast_list,
	195	.ndo_validate_addr = eth_validate_addr,
fe96aaa1	196	.ndo_set_mac_address = eth_mac_addr,
d079841d SH	197	.ndo_change_mtu = eth_change_mtu,
d079841d SH	198	#ifdef CONFIG_NET_POLL_CONTROLLER
06e88403	199	.ndo_poll_controller = ultra_poll,
d079841d SH	200	#endif
	201	};
	202
1da177e4 LT	203	static int __init ultra_probe1(struct net_device *dev, int ioaddr)
	204	{
	205	int i, retval;
	206	int checksum = 0;
	207	const char *model_name;
	208	unsigned char eeprom_irq = 0;
	209	static unsigned version_printed;
	210	/* Values from various config regs. */
	211	unsigned char num_pages, irqreg, addr, piomode;
	212	unsigned char idreg = inb(ioaddr + 7);
	213	unsigned char reg4 = inb(ioaddr + 4) & 0x7f;
	214
	215	if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME))
	216	return -EBUSY;
	217
	218	/* Check the ID nibble. */
	219	if ((idreg & 0xF0) != 0x20 /* SMC Ultra */
	220	&& (idreg & 0xF0) != 0x40) { /* SMC EtherEZ */
	221	retval = -ENODEV;
	222	goto out;
	223	}
	224
	225	/* Select the station address register set. */
	226	outb(reg4, ioaddr + 4);
	227
	228	for (i = 0; i < 8; i++)
	229	checksum += inb(ioaddr + 8 + i);
	230	if ((checksum & 0xff) != 0xFF) {
	231	retval = -ENODEV;
	232	goto out;
	233	}
	234
	235	if (ei_debug && version_printed++ == 0)
	236	printk(version);
	237
	238	model_name = (idreg & 0xF0) == 0x20 ? "SMC Ultra" : "SMC EtherEZ";
	239
1da177e4	240	for (i = 0; i < 6; i++)
0795af57 JP	241	dev->dev_addr[i] = inb(ioaddr + 8 + i);
0795af57 JP	242
e174961c JB	243	printk("%s: %s at %#3x, %pM", dev->name, model_name,
e174961c JB	244	ioaddr, dev->dev_addr);
1da177e4 LT	245
	246	/* Switch from the station address to the alternate register set and
	247	read the useful registers there. */
	248	outb(0x80 \| reg4, ioaddr + 4);
	249
	250	/* Enabled FINE16 mode to avoid BIOS ROM width mismatches @ reboot. */
	251	outb(0x80 \| inb(ioaddr + 0x0c), ioaddr + 0x0c);
	252	piomode = inb(ioaddr + 0x8);
	253	addr = inb(ioaddr + 0xb);
	254	irqreg = inb(ioaddr + 0xd);
	255
	256	/* Switch back to the station address register set so that the MS-DOS driver
	257	can find the card after a warm boot. */
	258	outb(reg4, ioaddr + 4);
	259
	260	if (dev->irq < 2) {
	261	unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15};
	262	int irq;
	263
	264	/* The IRQ bits are split. */
	265	irq = irqmap[((irqreg & 0x40) >> 4) + ((irqreg & 0x0c) >> 2)];
	266
	267	if (irq == 0) {
	268	printk(", failed to detect IRQ line.\n");
	269	retval = -EAGAIN;
	270	goto out;
	271	}
	272	dev->irq = irq;
	273	eeprom_irq = 1;
	274	}
	275
	276	/* The 8390 isn't at the base address, so fake the offset */
	277	dev->base_addr = ioaddr+ULTRA_NIC_OFFSET;
	278
	279	{
	280	int addr_tbl[4] = {0x0C0000, 0x0E0000, 0xFC0000, 0xFE0000};
	281	short num_pages_tbl[4] = {0x20, 0x40, 0x80, 0xff};
	282
	283	dev->mem_start = ((addr & 0x0f) << 13) + addr_tbl[(addr >> 6) & 3] ;
	284	num_pages = num_pages_tbl[(addr >> 4) & 3];
	285	}
	286
	287	ei_status.name = model_name;
	288	ei_status.word16 = 1;
	289	ei_status.tx_start_page = START_PG;
	290	ei_status.rx_start_page = START_PG + TX_PAGES;
	291	ei_status.stop_page = num_pages;
	292
	293	ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG)*256);
	294	if (!ei_status.mem) {
	295	printk(", failed to ioremap.\n");
	296	retval = -ENOMEM;
	297	goto out;
	298	}
	299
	300	dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG)*256;
	301
	302	if (piomode) {
	303	printk(",%s IRQ %d programmed-I/O mode.\n",
	304	eeprom_irq ? "EEPROM" : "assigned ", dev->irq);
	305	ei_status.block_input = &ultra_pio_input;
	306	ei_status.block_output = &ultra_pio_output;
	307	ei_status.get_8390_hdr = &ultra_pio_get_hdr;
	308	} else {
309	printk(",%s IRQ %d memory %#lx-%#lx.\n", eeprom_irq ? "" : "assigned ",
310	dev->irq, dev->mem_start, dev->mem_end-1);
311	ei_status.block_input = &ultra_block_input;
312	ei_status.block_output = &ultra_block_output;
313	ei_status.get_8390_hdr = &ultra_get_8390_hdr;
314	}
315	ei_status.reset_8390 = &ultra_reset_8390;
d079841d SH	316
d079841d SH	317	dev->netdev_ops = &ultra_netdev_ops;
1da177e4 LT	318	NS8390_init(dev, 0);
1da177e4 LT	319
b1fc5505 HX	320	retval = register_netdev(dev);
	321	if (retval)
	322	goto out;
1da177e4 LT	323	return 0;
	324	out:
	325	release_region(ioaddr, ULTRA_IO_EXTENT);
	326	return retval;
	327	}
	328
	329	#ifdef __ISAPNP__
	330	static int __init ultra_probe_isapnp(struct net_device *dev)
	331	{
	332	int i;
	333
	334	for (i = 0; ultra_device_ids[i].vendor != 0; i++) {
	335	struct pnp_dev *idev = NULL;
	336
	337	while ((idev = pnp_find_dev(NULL,
	338	ultra_device_ids[i].vendor,
	339	ultra_device_ids[i].function,
	340	idev))) {
	341	/* Avoid already found cards from previous calls */
	342	if (pnp_device_attach(idev) < 0)
	343	continue;
	344	if (pnp_activate_dev(idev) < 0) {
	345	__again:
	346	pnp_device_detach(idev);
	347	continue;
	348	}
	349	/* if no io and irq, search for next */
	350	if (!pnp_port_valid(idev, 0) \|\| !pnp_irq_valid(idev, 0))
	351	goto __again;
	352	/* found it */
	353	dev->base_addr = pnp_port_start(idev, 0);
	354	dev->irq = pnp_irq(idev, 0);
	355	printk(KERN_INFO "smc-ultra.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
	356	(char *) ultra_device_ids[i].driver_data,
	357	dev->base_addr, dev->irq);
	358	if (ultra_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
	359	printk(KERN_ERR "smc-ultra.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
	360	pnp_device_detach(idev);
	361	return -ENXIO;
	362	}
	363	ei_status.priv = (unsigned long)idev;
	364	break;
	365	}
	366	if (!idev)
	367	continue;
	368	return 0;
	369	}
	370
	371	return -ENODEV;
	372	}
	373	#endif
	374
	375	static int
	376	ultra_open(struct net_device *dev)
	377	{
	378	int retval;
	379	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	380	unsigned char irq2reg[] = {0, 0, 0x04, 0x08, 0, 0x0C, 0, 0x40,
	381	0, 0x04, 0x44, 0x48, 0, 0, 0, 0x4C, };
	382
	383	retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev);
	384	if (retval)
	385	return retval;
	386
387	outb(0x00, ioaddr); /* Disable shared memory for safety. */
388	outb(0x80, ioaddr + 5);
389	/* Set the IRQ line. */
390	outb(inb(ioaddr + 4) \| 0x80, ioaddr + 4);
391	outb((inb(ioaddr + 13) & ~0x4C) \| irq2reg[dev->irq], ioaddr + 13);
392	outb(inb(ioaddr + 4) & 0x7f, ioaddr + 4);
393
394	if (ei_status.block_input == &ultra_pio_input) {
395	outb(0x11, ioaddr + 6); /* Enable interrupts and PIO. */
396	outb(0x01, ioaddr + 0x19); /* Enable ring read auto-wrap. */
397	} else
398	outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
399	/* Set the early receive warning level in window 0 high enough not
400	to receive ERW interrupts. */
401	outb_p(E8390_NODMA+E8390_PAGE0, dev->base_addr);
402	outb(0xff, dev->base_addr + EN0_ERWCNT);
403	ei_open(dev);
404	return 0;
405	}
406
407	static void
408	ultra_reset_8390(struct net_device *dev)
409	{
410	int cmd_port = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC base addr */
411
412	outb(ULTRA_RESET, cmd_port);
413	if (ei_debug > 1) printk("resetting Ultra, t=%ld...", jiffies);
414	ei_status.txing = 0;
415
416	outb(0x00, cmd_port); /* Disable shared memory for safety. */
417	outb(0x80, cmd_port + 5);
418	if (ei_status.block_input == &ultra_pio_input)
419	outb(0x11, cmd_port + 6); /* Enable interrupts and PIO. */
420	else
421	outb(0x01, cmd_port + 6); /* Enable interrupts and memory. */
422
423	if (ei_debug > 1) printk("reset done\n");
1da177e4 LT	424	}
	425
	426	/* Grab the 8390 specific header. Similar to the block_input routine, but
	427	we don't need to be concerned with ring wrap as the header will be at
	428	the start of a page, so we optimize accordingly. */
	429
	430	static void
	431	ultra_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	432	{
	433	void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG)<<8);
	434
	435	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem on */
	436	#ifdef __BIG_ENDIAN
	437	/* Officially this is what we are doing, but the readl() is faster */
	438	/* unfortunately it isn't endian aware of the struct */
	439	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	440	hdr->count = le16_to_cpu(hdr->count);
	441	#else
	442	((unsigned int*)hdr)[0] = readl(hdr_start);
	443	#endif
	444	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem off */
	445	}
	446
	447	/* Block input and output are easy on shared memory ethercards, the only
	448	complication is when the ring buffer wraps. */
	449
	450	static void
	451	ultra_block_input(struct net_device dev, int count, struct sk_buff skb, int ring_offset)
	452	{
	453	void __iomem *xfer_start = ei_status.mem + ring_offset - (START_PG<<8);
	454
	455	/* Enable shared memory. */
	456	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);
	457
	458	if (ring_offset + count > ei_status.stop_page*256) {
	459	/* We must wrap the input move. */
	460	int semi_count = ei_status.stop_page*256 - ring_offset;
	461	memcpy_fromio(skb->data, xfer_start, semi_count);
	462	count -= semi_count;
	463	memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
	464	} else {
4ec03116	465	memcpy_fromio(skb->data, xfer_start, count);
1da177e4 LT	466	}
	467
	468	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
	469	}
	470
	471	static void
	472	ultra_block_output(struct net_device dev, int count, const unsigned char buf,
	473	int start_page)
	474	{
	475	void __iomem *shmem = ei_status.mem + ((start_page - START_PG)<<8);
	476
	477	/* Enable shared memory. */
	478	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);
	479
	480	memcpy_toio(shmem, buf, count);
	481
	482	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
	483	}
	484
	485	/* The identical operations for programmed I/O cards.
	486	The PIO model is trivial to use: the 16 bit start address is written
	487	byte-sequentially to IOPA, with no intervening I/O operations, and the
	488	data is read or written to the IOPD data port.
	489	The only potential complication is that the address register is shared
	490	and must be always be rewritten between each read/write direction change.
	491	This is no problem for us, as the 8390 code ensures that we are single
	492	threaded. */
	493	static void ultra_pio_get_hdr(struct net_device dev, struct e8390_pkt_hdr hdr,
	494	int ring_page)
	495	{
	496	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	497	outb(0x00, ioaddr + IOPA); /* Set the address, LSB first. */
	498	outb(ring_page, ioaddr + IOPA);
	499	insw(ioaddr + IOPD, hdr, sizeof(struct e8390_pkt_hdr)>>1);
	500	}
	501
	502	static void ultra_pio_input(struct net_device *dev, int count,
	503	struct sk_buff *skb, int ring_offset)
	504	{
	505	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	506	char *buf = skb->data;
	507
	508	/* For now set the address again, although it should already be correct. */
	509	outb(ring_offset, ioaddr + IOPA); /* Set the address, LSB first. */
	510	outb(ring_offset >> 8, ioaddr + IOPA);
	511	/* We know skbuffs are padded to at least word alignment. */
	512	insw(ioaddr + IOPD, buf, (count+1)>>1);
	513	}
	514
	515	static void ultra_pio_output(struct net_device *dev, int count,
	516	const unsigned char *buf, const int start_page)
	517	{
	518	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	519	outb(0x00, ioaddr + IOPA); /* Set the address, LSB first. */
	520	outb(start_page, ioaddr + IOPA);
	521	/* An extra odd byte is OK here as well. */
	522	outsw(ioaddr + IOPD, buf, (count+1)>>1);
	523	}
	524
	525	static int
	526	ultra_close_card(struct net_device *dev)
	527	{
	528	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* CMDREG */
	529
530	netif_stop_queue(dev);
531
532	if (ei_debug > 1)
533	printk("%s: Shutting down ethercard.\n", dev->name);
534
535	outb(0x00, ioaddr + 6); /* Disable interrupts. */
536	free_irq(dev->irq, dev);
537
538	NS8390_init(dev, 0);
539
540	/* We should someday disable shared memory and change to 8-bit mode
541	"just in case"... */
542
543	return 0;
544	}
545
6aa20a22	546
1da177e4 LT	547	#ifdef MODULE
	548	#define MAX_ULTRA_CARDS 4 /* Max number of Ultra cards per module */
	549	static struct net_device *dev_ultra[MAX_ULTRA_CARDS];
	550	static int io[MAX_ULTRA_CARDS];
	551	static int irq[MAX_ULTRA_CARDS];
	552
	553	module_param_array(io, int, NULL, 0);
	554	module_param_array(irq, int, NULL, 0);
	555	MODULE_PARM_DESC(io, "I/O base address(es)");
	556	MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
	557	MODULE_DESCRIPTION("SMC Ultra/EtherEZ ISA/PnP Ethernet driver");
	558	MODULE_LICENSE("GPL");
	559
	560	/* This is set up so that only a single autoprobe takes place per call.
	561	ISA device autoprobes on a running machine are not recommended. */
a2bd2ec8	562	int __init
1da177e4 LT	563	init_module(void)
	564	{
	565	struct net_device *dev;
	566	int this_dev, found = 0;
	567
	568	for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
	569	if (io[this_dev] == 0) {
	570	if (this_dev != 0) break; /* only autoprobe 1st one */
	571	printk(KERN_NOTICE "smc-ultra.c: Presently autoprobing (not recommended) for a single card.\n");
	572	}
	573	dev = alloc_ei_netdev();
	574	if (!dev)
	575	break;
	576	dev->irq = irq[this_dev];
	577	dev->base_addr = io[this_dev];
	578	if (do_ultra_probe(dev) == 0) {
b1fc5505 HX	579	dev_ultra[found++] = dev;
b1fc5505 HX	580	continue;
1da177e4 LT	581	}
	582	free_netdev(dev);
	583	printk(KERN_WARNING "smc-ultra.c: No SMC Ultra card found (i/o = 0x%x).\n", io[this_dev]);
	584	break;
	585	}
	586	if (found)
	587	return 0;
	588	return -ENXIO;
	589	}
	590
64916f1e DV	591	static void cleanup_card(struct net_device *dev)
	592	{
	593	/* NB: ultra_close_card() does free_irq */
	594	#ifdef __ISAPNP__
	595	struct pnp_dev idev = (struct pnp_dev )ei_status.priv;
	596	if (idev)
	597	pnp_device_detach(idev);
	598	#endif
	599	release_region(dev->base_addr - ULTRA_NIC_OFFSET, ULTRA_IO_EXTENT);
	600	iounmap(ei_status.mem);
	601	}
	602
afc8eb46	603	void __exit
1da177e4 LT	604	cleanup_module(void)
	605	{
	606	int this_dev;
	607
	608	for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
	609	struct net_device *dev = dev_ultra[this_dev];
	610	if (dev) {
	611	unregister_netdev(dev);
	612	cleanup_card(dev);
	613	free_netdev(dev);
	614	}
	615	}
	616	}
	617	#endif /* MODULE */