[mirror_ubuntu-artful-kernel.git] / drivers / net / ethernet / 8390 / 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/interrupt.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_rx_mode	= 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;

	{
		static const int addr_tbl[4] = {
			0x0C0000, 0x0E0000, 0xFC0000, 0xFE0000
		};
		static const 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>
a6b7a407	65	#include <linux/interrupt.h>
1da177e4 LT	66	#include <linux/isapnp.h>
	67	#include <linux/netdevice.h>
	68	#include <linux/etherdevice.h>
	69
	70	#include <asm/io.h>
bf4e70e5	71	#include <asm/irq.h>
1da177e4 LT	72	#include <asm/system.h>
	73
	74	#include "8390.h"
	75
	76	#define DRV_NAME "smc-ultra"
	77
	78	/* A zero-terminated list of I/O addresses to be probed. */
	79	static unsigned int ultra_portlist[] __initdata =
	80	{0x200, 0x220, 0x240, 0x280, 0x300, 0x340, 0x380, 0};
	81
	82	static int ultra_probe1(struct net_device *dev, int ioaddr);
	83
	84	#ifdef __ISAPNP__
	85	static int ultra_probe_isapnp(struct net_device *dev);
	86	#endif
	87
	88	static int ultra_open(struct net_device *dev);
	89	static void ultra_reset_8390(struct net_device *dev);
	90	static void ultra_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr,
	91	int ring_page);
	92	static void ultra_block_input(struct net_device *dev, int count,
	93	struct sk_buff *skb, int ring_offset);
	94	static void ultra_block_output(struct net_device *dev, int count,
	95	const unsigned char *buf, const int start_page);
	96	static void ultra_pio_get_hdr(struct net_device dev, struct e8390_pkt_hdr hdr,
	97	int ring_page);
	98	static void ultra_pio_input(struct net_device *dev, int count,
	99	struct sk_buff *skb, int ring_offset);
	100	static void ultra_pio_output(struct net_device *dev, int count,
	101	const unsigned char *buf, const int start_page);
	102	static int ultra_close_card(struct net_device *dev);
	103
	104	#ifdef __ISAPNP__
	105	static struct isapnp_device_id ultra_device_ids[] __initdata = {
	106	{ ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416),
	107	ISAPNP_VENDOR('S','M','C'), ISAPNP_FUNCTION(0x8416),
	108	(long) "SMC EtherEZ (8416)" },
	109	{ } /* terminate list */
	110	};
	111
	112	MODULE_DEVICE_TABLE(isapnp, ultra_device_ids);
	113	#endif
	114
6aa20a22	115
1da177e4 LT	116	#define START_PG 0x00 /* First page of TX buffer */
	117
	118	#define ULTRA_CMDREG 0 /* Offset to ASIC command register. */
	119	#define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */
	120	#define ULTRA_MEMENB 0x40 /* Enable the shared memory. */
	121	#define IOPD 0x02 /* I/O Pipe Data (16 bits), PIO operation. */
	122	#define IOPA 0x07 /* I/O Pipe Address for PIO operation. */
	123	#define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
	124	#define ULTRA_IO_EXTENT 32
	125	#define EN0_ERWCNT 0x08 /* Early receive warning count. */
6aa20a22	126
1da177e4 LT	127	#ifdef CONFIG_NET_POLL_CONTROLLER
	128	static void ultra_poll(struct net_device *dev)
	129	{
	130	disable_irq(dev->irq);
7d12e780	131	ei_interrupt(dev->irq, dev);
1da177e4 LT	132	enable_irq(dev->irq);
	133	}
	134	#endif
	135	/* Probe for the Ultra. This looks like a 8013 with the station
	136	address PROM at I/O ports <base>+8 to <base>+13, with a checksum
	137	following.
	138	*/
	139
	140	static int __init do_ultra_probe(struct net_device *dev)
	141	{
	142	int i;
	143	int base_addr = dev->base_addr;
	144	int irq = dev->irq;
	145
1da177e4 LT	146	if (base_addr > 0x1ff) /* Check a single specified location. */
	147	return ultra_probe1(dev, base_addr);
	148	else if (base_addr != 0) /* Don't probe at all. */
	149	return -ENXIO;
	150
	151	#ifdef __ISAPNP__
	152	/* Look for any installed ISAPnP cards */
	153	if (isapnp_present() && (ultra_probe_isapnp(dev) == 0))
	154	return 0;
	155	#endif
	156
	157	for (i = 0; ultra_portlist[i]; i++) {
	158	dev->irq = irq;
	159	if (ultra_probe1(dev, ultra_portlist[i]) == 0)
	160	return 0;
	161	}
	162
	163	return -ENODEV;
	164	}
	165
1da177e4 LT	166	#ifndef MODULE
	167	struct net_device * __init ultra_probe(int unit)
	168	{
	169	struct net_device *dev = alloc_ei_netdev();
	170	int err;
	171
	172	if (!dev)
	173	return ERR_PTR(-ENOMEM);
	174
	175	sprintf(dev->name, "eth%d", unit);
	176	netdev_boot_setup_check(dev);
	177
	178	err = do_ultra_probe(dev);
	179	if (err)
	180	goto out;
1da177e4	181	return dev;
1da177e4 LT	182	out:
	183	free_netdev(dev);
	184	return ERR_PTR(err);
	185	}
	186	#endif
	187
d079841d SH	188	static const struct net_device_ops ultra_netdev_ops = {
	189	.ndo_open = ultra_open,
	190	.ndo_stop = ultra_close_card,
	191
	192	.ndo_start_xmit = ei_start_xmit,
	193	.ndo_tx_timeout = ei_tx_timeout,
	194	.ndo_get_stats = ei_get_stats,
afc4b13d	195	.ndo_set_rx_mode = ei_set_multicast_list,
d079841d	196	.ndo_validate_addr = eth_validate_addr,
fe96aaa1	197	.ndo_set_mac_address = eth_mac_addr,
d079841d SH	198	.ndo_change_mtu = eth_change_mtu,
d079841d SH	199	#ifdef CONFIG_NET_POLL_CONTROLLER
06e88403	200	.ndo_poll_controller = ultra_poll,
d079841d SH	201	#endif
	202	};
	203
1da177e4 LT	204	static int __init ultra_probe1(struct net_device *dev, int ioaddr)
	205	{
	206	int i, retval;
	207	int checksum = 0;
	208	const char *model_name;
	209	unsigned char eeprom_irq = 0;
	210	static unsigned version_printed;
	211	/* Values from various config regs. */
	212	unsigned char num_pages, irqreg, addr, piomode;
	213	unsigned char idreg = inb(ioaddr + 7);
	214	unsigned char reg4 = inb(ioaddr + 4) & 0x7f;
	215
	216	if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME))
	217	return -EBUSY;
	218
	219	/* Check the ID nibble. */
	220	if ((idreg & 0xF0) != 0x20 /* SMC Ultra */
	221	&& (idreg & 0xF0) != 0x40) { /* SMC EtherEZ */
	222	retval = -ENODEV;
	223	goto out;
	224	}
	225
	226	/* Select the station address register set. */
	227	outb(reg4, ioaddr + 4);
	228
	229	for (i = 0; i < 8; i++)
	230	checksum += inb(ioaddr + 8 + i);
	231	if ((checksum & 0xff) != 0xFF) {
	232	retval = -ENODEV;
	233	goto out;
	234	}
	235
	236	if (ei_debug && version_printed++ == 0)
	237	printk(version);
	238
	239	model_name = (idreg & 0xF0) == 0x20 ? "SMC Ultra" : "SMC EtherEZ";
	240
1da177e4	241	for (i = 0; i < 6; i++)
0795af57 JP	242	dev->dev_addr[i] = inb(ioaddr + 8 + i);
0795af57 JP	243
e174961c JB	244	printk("%s: %s at %#3x, %pM", dev->name, model_name,
e174961c JB	245	ioaddr, dev->dev_addr);
1da177e4 LT	246
	247	/* Switch from the station address to the alternate register set and
	248	read the useful registers there. */
	249	outb(0x80 \| reg4, ioaddr + 4);
	250
	251	/* Enabled FINE16 mode to avoid BIOS ROM width mismatches @ reboot. */
	252	outb(0x80 \| inb(ioaddr + 0x0c), ioaddr + 0x0c);
	253	piomode = inb(ioaddr + 0x8);
	254	addr = inb(ioaddr + 0xb);
	255	irqreg = inb(ioaddr + 0xd);
	256
	257	/* Switch back to the station address register set so that the MS-DOS driver
	258	can find the card after a warm boot. */
	259	outb(reg4, ioaddr + 4);
	260
	261	if (dev->irq < 2) {
	262	unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15};
	263	int irq;
	264
	265	/* The IRQ bits are split. */
	266	irq = irqmap[((irqreg & 0x40) >> 4) + ((irqreg & 0x0c) >> 2)];
	267
	268	if (irq == 0) {
	269	printk(", failed to detect IRQ line.\n");
	270	retval = -EAGAIN;
	271	goto out;
	272	}
	273	dev->irq = irq;
	274	eeprom_irq = 1;
	275	}
	276
	277	/* The 8390 isn't at the base address, so fake the offset */
	278	dev->base_addr = ioaddr+ULTRA_NIC_OFFSET;
	279
	280	{
b6bc7650 JP	281	static const int addr_tbl[4] = {
	282	0x0C0000, 0x0E0000, 0xFC0000, 0xFE0000
	283	};
	284	static const short num_pages_tbl[4] = {
	285	0x20, 0x40, 0x80, 0xff
	286	};
1da177e4 LT	287
	288	dev->mem_start = ((addr & 0x0f) << 13) + addr_tbl[(addr >> 6) & 3] ;
	289	num_pages = num_pages_tbl[(addr >> 4) & 3];
	290	}
	291
	292	ei_status.name = model_name;
	293	ei_status.word16 = 1;
	294	ei_status.tx_start_page = START_PG;
	295	ei_status.rx_start_page = START_PG + TX_PAGES;
	296	ei_status.stop_page = num_pages;
	297
	298	ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG)*256);
	299	if (!ei_status.mem) {
	300	printk(", failed to ioremap.\n");
	301	retval = -ENOMEM;
	302	goto out;
	303	}
	304
	305	dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG)*256;
	306
	307	if (piomode) {
	308	printk(",%s IRQ %d programmed-I/O mode.\n",
	309	eeprom_irq ? "EEPROM" : "assigned ", dev->irq);
	310	ei_status.block_input = &ultra_pio_input;
	311	ei_status.block_output = &ultra_pio_output;
	312	ei_status.get_8390_hdr = &ultra_pio_get_hdr;
	313	} else {
	314	printk(",%s IRQ %d memory %#lx-%#lx.\n", eeprom_irq ? "" : "assigned ",
	315	dev->irq, dev->mem_start, dev->mem_end-1);
	316	ei_status.block_input = &ultra_block_input;
	317	ei_status.block_output = &ultra_block_output;
	318	ei_status.get_8390_hdr = &ultra_get_8390_hdr;
	319	}
	320	ei_status.reset_8390 = &ultra_reset_8390;
d079841d SH	321
d079841d SH	322	dev->netdev_ops = &ultra_netdev_ops;
1da177e4 LT	323	NS8390_init(dev, 0);
1da177e4 LT	324
b1fc5505 HX	325	retval = register_netdev(dev);
	326	if (retval)
	327	goto out;
1da177e4 LT	328	return 0;
	329	out:
	330	release_region(ioaddr, ULTRA_IO_EXTENT);
	331	return retval;
	332	}
	333
	334	#ifdef __ISAPNP__
	335	static int __init ultra_probe_isapnp(struct net_device *dev)
	336	{
	337	int i;
	338
	339	for (i = 0; ultra_device_ids[i].vendor != 0; i++) {
	340	struct pnp_dev *idev = NULL;
	341
	342	while ((idev = pnp_find_dev(NULL,
	343	ultra_device_ids[i].vendor,
	344	ultra_device_ids[i].function,
	345	idev))) {
	346	/* Avoid already found cards from previous calls */
	347	if (pnp_device_attach(idev) < 0)
	348	continue;
	349	if (pnp_activate_dev(idev) < 0) {
	350	__again:
	351	pnp_device_detach(idev);
	352	continue;
	353	}
	354	/* if no io and irq, search for next */
	355	if (!pnp_port_valid(idev, 0) \|\| !pnp_irq_valid(idev, 0))
	356	goto __again;
	357	/* found it */
	358	dev->base_addr = pnp_port_start(idev, 0);
	359	dev->irq = pnp_irq(idev, 0);
	360	printk(KERN_INFO "smc-ultra.c: ISAPnP reports %s at i/o %#lx, irq %d.\n",
	361	(char *) ultra_device_ids[i].driver_data,
	362	dev->base_addr, dev->irq);
	363	if (ultra_probe1(dev, dev->base_addr) != 0) { /* Shouldn't happen. */
	364	printk(KERN_ERR "smc-ultra.c: Probe of ISAPnP card at %#lx failed.\n", dev->base_addr);
	365	pnp_device_detach(idev);
	366	return -ENXIO;
	367	}
	368	ei_status.priv = (unsigned long)idev;
	369	break;
	370	}
	371	if (!idev)
	372	continue;
	373	return 0;
	374	}
	375
	376	return -ENODEV;
	377	}
	378	#endif
	379
	380	static int
	381	ultra_open(struct net_device *dev)
	382	{
	383	int retval;
	384	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	385	unsigned char irq2reg[] = {0, 0, 0x04, 0x08, 0, 0x0C, 0, 0x40,
	386	0, 0x04, 0x44, 0x48, 0, 0, 0, 0x4C, };
	387
	388	retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev);
	389	if (retval)
	390	return retval;
	391
392	outb(0x00, ioaddr); /* Disable shared memory for safety. */
393	outb(0x80, ioaddr + 5);
394	/* Set the IRQ line. */
395	outb(inb(ioaddr + 4) \| 0x80, ioaddr + 4);
396	outb((inb(ioaddr + 13) & ~0x4C) \| irq2reg[dev->irq], ioaddr + 13);
397	outb(inb(ioaddr + 4) & 0x7f, ioaddr + 4);
398
399	if (ei_status.block_input == &ultra_pio_input) {
400	outb(0x11, ioaddr + 6); /* Enable interrupts and PIO. */
401	outb(0x01, ioaddr + 0x19); /* Enable ring read auto-wrap. */
402	} else
403	outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */
404	/* Set the early receive warning level in window 0 high enough not
405	to receive ERW interrupts. */
406	outb_p(E8390_NODMA+E8390_PAGE0, dev->base_addr);
407	outb(0xff, dev->base_addr + EN0_ERWCNT);
408	ei_open(dev);
409	return 0;
410	}
411
412	static void
413	ultra_reset_8390(struct net_device *dev)
414	{
415	int cmd_port = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC base addr */
416
417	outb(ULTRA_RESET, cmd_port);
418	if (ei_debug > 1) printk("resetting Ultra, t=%ld...", jiffies);
419	ei_status.txing = 0;
420
421	outb(0x00, cmd_port); /* Disable shared memory for safety. */
422	outb(0x80, cmd_port + 5);
423	if (ei_status.block_input == &ultra_pio_input)
424	outb(0x11, cmd_port + 6); /* Enable interrupts and PIO. */
425	else
426	outb(0x01, cmd_port + 6); /* Enable interrupts and memory. */
427
428	if (ei_debug > 1) printk("reset done\n");
1da177e4 LT	429	}
	430
	431	/* Grab the 8390 specific header. Similar to the block_input routine, but
	432	we don't need to be concerned with ring wrap as the header will be at
	433	the start of a page, so we optimize accordingly. */
	434
	435	static void
	436	ultra_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	437	{
	438	void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG)<<8);
	439
	440	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem on */
	441	#ifdef __BIG_ENDIAN
	442	/* Officially this is what we are doing, but the readl() is faster */
	443	/* unfortunately it isn't endian aware of the struct */
	444	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	445	hdr->count = le16_to_cpu(hdr->count);
	446	#else
	447	((unsigned int*)hdr)[0] = readl(hdr_start);
	448	#endif
	449	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* shmem off */
	450	}
	451
	452	/* Block input and output are easy on shared memory ethercards, the only
	453	complication is when the ring buffer wraps. */
	454
	455	static void
	456	ultra_block_input(struct net_device dev, int count, struct sk_buff skb, int ring_offset)
	457	{
	458	void __iomem *xfer_start = ei_status.mem + ring_offset - (START_PG<<8);
	459
	460	/* Enable shared memory. */
	461	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);
	462
	463	if (ring_offset + count > ei_status.stop_page*256) {
	464	/* We must wrap the input move. */
	465	int semi_count = ei_status.stop_page*256 - ring_offset;
	466	memcpy_fromio(skb->data, xfer_start, semi_count);
	467	count -= semi_count;
	468	memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
	469	} else {
4ec03116	470	memcpy_fromio(skb->data, xfer_start, count);
1da177e4 LT	471	}
	472
	473	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
	474	}
	475
	476	static void
	477	ultra_block_output(struct net_device dev, int count, const unsigned char buf,
	478	int start_page)
	479	{
	480	void __iomem *shmem = ei_status.mem + ((start_page - START_PG)<<8);
	481
	482	/* Enable shared memory. */
	483	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);
	484
	485	memcpy_toio(shmem, buf, count);
	486
	487	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET); /* Disable memory. */
	488	}
	489
	490	/* The identical operations for programmed I/O cards.
	491	The PIO model is trivial to use: the 16 bit start address is written
	492	byte-sequentially to IOPA, with no intervening I/O operations, and the
	493	data is read or written to the IOPD data port.
	494	The only potential complication is that the address register is shared
	495	and must be always be rewritten between each read/write direction change.
	496	This is no problem for us, as the 8390 code ensures that we are single
	497	threaded. */
	498	static void ultra_pio_get_hdr(struct net_device dev, struct e8390_pkt_hdr hdr,
	499	int ring_page)
	500	{
	501	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	502	outb(0x00, ioaddr + IOPA); /* Set the address, LSB first. */
	503	outb(ring_page, ioaddr + IOPA);
	504	insw(ioaddr + IOPD, hdr, sizeof(struct e8390_pkt_hdr)>>1);
	505	}
	506
	507	static void ultra_pio_input(struct net_device *dev, int count,
	508	struct sk_buff *skb, int ring_offset)
	509	{
	510	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	511	char *buf = skb->data;
	512
	513	/* For now set the address again, although it should already be correct. */
	514	outb(ring_offset, ioaddr + IOPA); /* Set the address, LSB first. */
	515	outb(ring_offset >> 8, ioaddr + IOPA);
	516	/* We know skbuffs are padded to at least word alignment. */
	517	insw(ioaddr + IOPD, buf, (count+1)>>1);
	518	}
	519
	520	static void ultra_pio_output(struct net_device *dev, int count,
	521	const unsigned char *buf, const int start_page)
	522	{
	523	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */
	524	outb(0x00, ioaddr + IOPA); /* Set the address, LSB first. */
	525	outb(start_page, ioaddr + IOPA);
	526	/* An extra odd byte is OK here as well. */
	527	outsw(ioaddr + IOPD, buf, (count+1)>>1);
	528	}
	529
	530	static int
	531	ultra_close_card(struct net_device *dev)
	532	{
	533	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* CMDREG */
	534
535	netif_stop_queue(dev);
536
537	if (ei_debug > 1)
538	printk("%s: Shutting down ethercard.\n", dev->name);
539
540	outb(0x00, ioaddr + 6); /* Disable interrupts. */
541	free_irq(dev->irq, dev);
542
543	NS8390_init(dev, 0);
544
545	/* We should someday disable shared memory and change to 8-bit mode
546	"just in case"... */
547
548	return 0;
549	}
550
6aa20a22	551
1da177e4 LT	552	#ifdef MODULE
	553	#define MAX_ULTRA_CARDS 4 /* Max number of Ultra cards per module */
	554	static struct net_device *dev_ultra[MAX_ULTRA_CARDS];
	555	static int io[MAX_ULTRA_CARDS];
	556	static int irq[MAX_ULTRA_CARDS];
	557
	558	module_param_array(io, int, NULL, 0);
	559	module_param_array(irq, int, NULL, 0);
	560	MODULE_PARM_DESC(io, "I/O base address(es)");
	561	MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
	562	MODULE_DESCRIPTION("SMC Ultra/EtherEZ ISA/PnP Ethernet driver");
	563	MODULE_LICENSE("GPL");
	564
	565	/* This is set up so that only a single autoprobe takes place per call.
	566	ISA device autoprobes on a running machine are not recommended. */
a2bd2ec8	567	int __init
1da177e4 LT	568	init_module(void)
	569	{
	570	struct net_device *dev;
	571	int this_dev, found = 0;
	572
	573	for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
	574	if (io[this_dev] == 0) {
	575	if (this_dev != 0) break; /* only autoprobe 1st one */
	576	printk(KERN_NOTICE "smc-ultra.c: Presently autoprobing (not recommended) for a single card.\n");
	577	}
	578	dev = alloc_ei_netdev();
	579	if (!dev)
	580	break;
	581	dev->irq = irq[this_dev];
	582	dev->base_addr = io[this_dev];
	583	if (do_ultra_probe(dev) == 0) {
b1fc5505 HX	584	dev_ultra[found++] = dev;
b1fc5505 HX	585	continue;
1da177e4 LT	586	}
	587	free_netdev(dev);
	588	printk(KERN_WARNING "smc-ultra.c: No SMC Ultra card found (i/o = 0x%x).\n", io[this_dev]);
	589	break;
	590	}
	591	if (found)
	592	return 0;
	593	return -ENXIO;
	594	}
	595
64916f1e DV	596	static void cleanup_card(struct net_device *dev)
	597	{
	598	/* NB: ultra_close_card() does free_irq */
	599	#ifdef __ISAPNP__
	600	struct pnp_dev idev = (struct pnp_dev )ei_status.priv;
	601	if (idev)
	602	pnp_device_detach(idev);
	603	#endif
	604	release_region(dev->base_addr - ULTRA_NIC_OFFSET, ULTRA_IO_EXTENT);
	605	iounmap(ei_status.mem);
	606	}
	607
afc8eb46	608	void __exit
1da177e4 LT	609	cleanup_module(void)
	610	{
	611	int this_dev;
	612
	613	for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {
	614	struct net_device *dev = dev_ultra[this_dev];
	615	if (dev) {
	616	unregister_netdev(dev);
	617	cleanup_card(dev);
	618	free_netdev(dev);
	619	}
	620	}
	621	}
	622	#endif /* MODULE */