{	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, };	if (request_irq(dev->irq, ei_interrupt, 0, ei_status.name, dev))		return -EAGAIN;	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);	MOD_INC_USE_COUNT;	return 0;}static voidultra_reset_8390(struct 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");	return;}/* 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 voidultra_get_8390_hdr(struct device *dev, struct e8390_pkt_hdr *hdr, int ring_page){	unsigned long hdr_start = dev->mem_start + ((ring_page - START_PG)<<8);	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);	/* shmem on */#ifdef notdef	/* Officially this is what we are doing, but the readl() is faster */	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));#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 voidultra_block_input(struct device *dev, int count, struct sk_buff *skb, int ring_offset){	unsigned long xfer_start = dev->mem_start + ring_offset - (START_PG<<8);	/* Enable shared memory. */	outb(ULTRA_MEMENB, dev->base_addr - ULTRA_NIC_OFFSET);	if (xfer_start + count > dev->rmem_end) {		/* We must wrap the input move. */		int semi_count = dev->rmem_end - xfer_start;		memcpy_fromio(skb->data, xfer_start, semi_count);		count -= semi_count;		memcpy_fromio(skb->data + semi_count, dev->rmem_start, count);	} else {		/* Packet is in one chunk -- we can copy + cksum. */		eth_io_copy_and_sum(skb, xfer_start, count, 0);	}	outb(0x00, dev->base_addr - ULTRA_NIC_OFFSET);	/* Disable memory. */}static voidultra_block_output(struct device *dev, int count, const unsigned char *buf,				int start_page){	unsigned long shmem = dev->mem_start + ((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 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 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 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 intultra_close_card(struct device *dev){	int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* CMDREG */	dev->start = 0;	dev->tbusy = 1;	if (ei_debug > 1)		printk("%s: Shutting down ethercard.\n", dev->name);	outb(0x00, ioaddr + 6);		/* Disable interrupts. */	free_irq(dev->irq, dev);	irq2dev_map[dev->irq] = 0;	NS8390_init(dev, 0);	/* We should someday disable shared memory and change to 8-bit mode	   "just in case"... */	MOD_DEC_USE_COUNT;	return 0;}#ifdef MODULE#define MAX_ULTRA_CARDS	4	/* Max number of Ultra cards per module */#define NAMELEN		8	/* # of chars for storing dev->name */static char namelist[NAMELEN * MAX_ULTRA_CARDS] = { 0, };static struct device dev_ultra[MAX_ULTRA_CARDS] = {	{		NULL,		/* assign a chunk of namelist[] below */		0, 0, 0, 0,		0, 0,		0, 0, 0, NULL, NULL	},};static int io[MAX_ULTRA_CARDS] = { 0, };static int irq[MAX_ULTRA_CARDS]  = { 0, };/* This is set up so that only a single autoprobe takes place per call.ISA device autoprobes on a running machine are not recommended. */intinit_module(void){	int this_dev, found = 0;	for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {		struct device *dev = &dev_ultra[this_dev];		dev->name = namelist+(NAMELEN*this_dev);		dev->irq = irq[this_dev];		dev->base_addr = io[this_dev];		dev->init = ultra_probe;		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");		}		if (register_netdev(dev) != 0) {			printk(KERN_WARNING "smc-ultra.c: No SMC Ultra card found (i/o = 0x%x).\n", io[this_dev]);			if (found != 0) return 0;	/* Got at least one. */			return -ENXIO;		}		found++;	}	return 0;}voidcleanup_module(void){	int this_dev;	for (this_dev = 0; this_dev < MAX_ULTRA_CARDS; this_dev++) {		struct device *dev = &dev_ultra[this_dev];		if (dev->priv != NULL) {			/* NB: ultra_close_card() does free_irq + irq2dev */			int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET;			kfree(dev->priv);			dev->priv = NULL;			release_region(ioaddr, ULTRA_IO_EXTENT);			unregister_netdev(dev);		}	}}#endif /* MODULE *//* * Local variables: *  compile-command: "gcc -D__KERNEL__ -Wall -O6 -I/usr/src/linux/net/inet -c smc-ultra.c" *  version-control: t *  kept-new-versions: 5 *  c-indent-level: 4 *  c-basic-offset: 4 *  tab-width: 4 * End: */