[net-next-2.6.git] / drivers / net / smc-ultra32.c

/* 	smc-ultra32.c: An SMC Ultra32 EISA ethernet driver for linux.

Sources:

	This driver is based on (cloned from) the ISA SMC Ultra driver
	written by Donald Becker. Modifications to support the EISA
	version of the card by Paul Gortmaker and Leonard N. Zubkoff.

	This software may be used and distributed according to the terms
	of the GNU General Public License, incorporated herein by reference.

Theory of Operation:

	The SMC Ultra32C card uses the SMC 83c790 chip which is also
	found on the ISA SMC Ultra cards. It has a shared memory mode of
	operation that makes it similar to the ISA version of the card.
	The main difference is that the EISA card has 32KB of RAM, but
	only an 8KB window into that memory. The EISA card also can be
	set for a bus-mastering mode of operation via the ECU, but that
	is not (and probably will never be) supported by this driver.
	The ECU should be run to enable shared memory and to disable the
	bus-mastering feature for use with linux.

	By programming the 8390 to use only 8KB RAM, the modifications
	to the ISA driver can be limited to the probe and initialization
	code. This allows easy integration of EISA support into the ISA
	driver. However, the driver development kit from SMC provided the
	register information for sliding the 8KB window, and hence the 8390
	is programmed to use the full 32KB RAM.

	Unfortunately this required code changes outside the probe/init
	routines, and thus we decided to separate the EISA driver from
	the ISA one. In this way, ISA users don't end up with a larger
	driver due to the EISA code, and EISA users don't end up with a
	larger driver due to the ISA EtherEZ PIO code. The driver is
	similar to the 3c503/16 driver, in that the window must be set
	back to the 1st 8KB of space for access to the two 8390 Tx slots.

	In testing, using only 8KB RAM (3 Tx / 5 Rx) didn't appear to
	be a limiting factor, since the EISA bus could get packets off
	the card fast enough, but having the use of lots of RAM as Rx
	space is extra insurance if interrupt latencies become excessive.

*/

static const char *version = "smc-ultra32.c: 06/97 v1.00\n";


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

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

#include "8390.h"

#define DRV_NAME "smc-ultra32"

static int ultra32_probe1(struct net_device *dev, int ioaddr);
static int ultra32_open(struct net_device *dev);
static void ultra32_reset_8390(struct net_device *dev);
static void ultra32_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
				 int ring_page);
static void ultra32_block_input(struct net_device *dev, int count,
				struct sk_buff *skb, int ring_offset);
static void ultra32_block_output(struct net_device *dev, int count,
				 const unsigned char *buf,
				 const int start_page);
static int ultra32_close(struct net_device *dev);

#define ULTRA32_CMDREG	0	/* Offset to ASIC command register. */
#define	 ULTRA32_RESET	0x80	/* Board reset, in ULTRA32_CMDREG. */
#define	 ULTRA32_MEMENB	0x40	/* Enable the shared memory. */
#define ULTRA32_NIC_OFFSET 16	/* NIC register offset from the base_addr. */
#define ULTRA32_IO_EXTENT 32
#define EN0_ERWCNT		0x08	/* Early receive warning count. */

/*
 * Defines that apply only to the Ultra32 EISA card. Note that
 * "smc" = 10011 01101 00011 = 0x4da3, and hence !smc8010.cfg translates
 * into an EISA ID of 0x1080A34D
 */
#define ULTRA32_BASE	0xca0
#define ULTRA32_ID	0x1080a34d
#define ULTRA32_IDPORT	(-0x20)	/* 0xc80 */
/* Config regs 1->7 from the EISA !SMC8010.CFG file. */
#define ULTRA32_CFG1	0x04	/* 0xca4 */
#define ULTRA32_CFG2	0x05	/* 0xca5 */
#define ULTRA32_CFG3	(-0x18)	/* 0xc88 */
#define ULTRA32_CFG4	(-0x17)	/* 0xc89 */
#define ULTRA32_CFG5	(-0x16)	/* 0xc8a */
#define ULTRA32_CFG6	(-0x15)	/* 0xc8b */
#define ULTRA32_CFG7	0x0d	/* 0xcad */

static void cleanup_card(struct net_device *dev)
{
	int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET;
	/* NB: ultra32_close_card() does free_irq */
	release_region(ioaddr, ULTRA32_IO_EXTENT);
	iounmap(ei_status.mem);
}

/*	Probe for the Ultra32.  This looks like a 8013 with the station
	address PROM at I/O ports <base>+8 to <base>+13, with a checksum
	following.
*/

struct net_device * __init ultra32_probe(int unit)
{
	struct net_device *dev;
	int base;
	int irq;
	int err = -ENODEV;

	if (!EISA_bus)
		return ERR_PTR(-ENODEV);

	dev = alloc_ei_netdev();

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

	if (unit >= 0) {
		sprintf(dev->name, "eth%d", unit);
		netdev_boot_setup_check(dev);
	}

	irq = dev->irq;

	/* EISA spec allows for up to 16 slots, but 8 is typical. */
	for (base = 0x1000 + ULTRA32_BASE; base < 0x9000; base += 0x1000) {
		if (ultra32_probe1(dev, base) == 0)
			break;
		dev->irq = irq;
	}
	if (base >= 0x9000)
		goto out;
	err = register_netdev(dev);
	if (err)
		goto out1;
	return dev;
out1:
	cleanup_card(dev);
out:
	free_netdev(dev);
	return ERR_PTR(err);
}


static const struct net_device_ops ultra32_netdev_ops = {
	.ndo_open 		= ultra32_open,
	.ndo_stop 		= ultra32_close,
	.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	= ei_poll,
#endif
};

static int __init ultra32_probe1(struct net_device *dev, int ioaddr)
{
	int i, edge, media, retval;
	int checksum = 0;
	const char *model_name;
	static unsigned version_printed;
	/* Values from various config regs. */
	unsigned char idreg;
	unsigned char reg4;
	const char *ifmap[] = {"UTP No Link", "", "UTP/AUI", "UTP/BNC"};

	if (!request_region(ioaddr, ULTRA32_IO_EXTENT, DRV_NAME))
		return -EBUSY;

	if (inb(ioaddr + ULTRA32_IDPORT) == 0xff ||
	    inl(ioaddr + ULTRA32_IDPORT) != ULTRA32_ID) {
		retval = -ENODEV;
		goto out;
	}

	media = inb(ioaddr + ULTRA32_CFG7) & 0x03;
	edge = inb(ioaddr + ULTRA32_CFG5) & 0x08;
	printk("SMC Ultra32 in EISA Slot %d, Media: %s, %s IRQs.\n",
		ioaddr >> 12, ifmap[media],
		(edge ? "Edge Triggered" : "Level Sensitive"));

	idreg = inb(ioaddr + 7);
	reg4 = inb(ioaddr + 4) & 0x7f;

	/* Check the ID nibble. */
	if ((idreg & 0xf0) != 0x20) {			/* SMC Ultra */
		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 = "SMC Ultra32";

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

	printk("%s: %s at 0x%X, %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);

	/* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot. */
	outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c);

	/* Reset RAM addr. */
	outb(0x00, ioaddr + 0x0b);

	/* 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 ((inb(ioaddr + ULTRA32_CFG5) & 0x40) == 0) {
		printk("\nsmc-ultra32: Card RAM is disabled!  "
		       "Run EISA config utility.\n");
		retval = -ENODEV;
		goto out;
	}
	if ((inb(ioaddr + ULTRA32_CFG2) & 0x04) == 0)
		printk("\nsmc-ultra32: Ignoring Bus-Master enable bit.  "
		       "Run EISA config utility.\n");

	if (dev->irq < 2) {
		unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15};
		int irq = irqmap[inb(ioaddr + ULTRA32_CFG5) & 0x07];
		if (irq == 0) {
			printk(", failed to detect IRQ line.\n");
			retval = -EAGAIN;
			goto out;
		}
		dev->irq = irq;
	}

	/* The 8390 isn't at the base address, so fake the offset */
	dev->base_addr = ioaddr + ULTRA32_NIC_OFFSET;

	/* Save RAM address in the unused reg0 to avoid excess inb's. */
	ei_status.reg0 = inb(ioaddr + ULTRA32_CFG3) & 0xfc;

	dev->mem_start =  0xc0000 + ((ei_status.reg0 & 0x7c) << 11);

	ei_status.name = model_name;
	ei_status.word16 = 1;
	ei_status.tx_start_page = 0;
	ei_status.rx_start_page = TX_PAGES;
	/* All Ultra32 cards have 32KB memory with an 8KB window. */
	ei_status.stop_page = 128;

	ei_status.mem = ioremap(dev->mem_start, 0x2000);
	if (!ei_status.mem) {
		printk(", failed to ioremap.\n");
		retval = -ENOMEM;
		goto out;
	}
	dev->mem_end = dev->mem_start + 0x1fff;

	printk(", IRQ %d, 32KB memory, 8KB window at 0x%lx-0x%lx.\n",
	       dev->irq, dev->mem_start, dev->mem_end);
	ei_status.block_input = &ultra32_block_input;
	ei_status.block_output = &ultra32_block_output;
	ei_status.get_8390_hdr = &ultra32_get_8390_hdr;
	ei_status.reset_8390 = &ultra32_reset_8390;

	dev->netdev_ops = &ultra32_netdev_ops;
	NS8390_init(dev, 0);

	return 0;
out:
	release_region(ioaddr, ULTRA32_IO_EXTENT);
	return retval;
}

static int ultra32_open(struct net_device *dev)
{
	int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET; /* ASIC addr */
	int irq_flags = (inb(ioaddr + ULTRA32_CFG5) & 0x08) ? 0 : IRQF_SHARED;
	int retval;

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

	outb(ULTRA32_MEMENB, ioaddr); /* Enable Shared Memory. */
	outb(0x80, ioaddr + ULTRA32_CFG6); /* Enable Interrupts. */
	outb(0x84, ioaddr + 5);	/* Enable MEM16 & Disable Bus Master. */
	outb(0x01, ioaddr + 6);	/* Enable Interrupts. */
	/* 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 int ultra32_close(struct net_device *dev)
{
	int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET; /* CMDREG */

	netif_stop_queue(dev);

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

	outb(0x00, ioaddr + ULTRA32_CFG6); /* Disable Interrupts. */
	outb(0x00, ioaddr + 6);		/* Disable interrupts. */
	free_irq(dev->irq, dev);

	NS8390_init(dev, 0);

	return 0;
}

static void ultra32_reset_8390(struct net_device *dev)
{
	int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET; /* ASIC base addr */

	outb(ULTRA32_RESET, ioaddr);
	if (ei_debug > 1) printk("resetting Ultra32, t=%ld...", jiffies);
	ei_status.txing = 0;

	outb(ULTRA32_MEMENB, ioaddr); /* Enable Shared Memory. */
	outb(0x80, ioaddr + ULTRA32_CFG6); /* Enable Interrupts. */
	outb(0x84, ioaddr + 5);	/* Enable MEM16 & Disable Bus Master. */
	outb(0x01, ioaddr + 6);	/* Enable Interrupts. */
	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 ultra32_get_8390_hdr(struct net_device *dev,
				 struct e8390_pkt_hdr *hdr,
				 int ring_page)
{
	void __iomem *hdr_start = ei_status.mem + ((ring_page & 0x1f) << 8);
	unsigned int RamReg = dev->base_addr - ULTRA32_NIC_OFFSET + ULTRA32_CFG3;

	/* Select correct 8KB Window. */
	outb(ei_status.reg0 | ((ring_page & 0x60) >> 5), RamReg);

#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
}

/* Block input and output are easy on shared memory ethercards, the only
   complication is when the ring buffer wraps, or in this case, when a
   packet spans an 8KB boundary. Note that the current 8KB segment is
   already set by the get_8390_hdr routine. */

static void ultra32_block_input(struct net_device *dev,
				int count,
				struct sk_buff *skb,
				int ring_offset)
{
	void __iomem *xfer_start = ei_status.mem + (ring_offset & 0x1fff);
	unsigned int RamReg = dev->base_addr - ULTRA32_NIC_OFFSET + ULTRA32_CFG3;

	if ((ring_offset & ~0x1fff) != ((ring_offset + count - 1) & ~0x1fff)) {
		int semi_count = 8192 - (ring_offset & 0x1FFF);
		memcpy_fromio(skb->data, xfer_start, semi_count);
		count -= semi_count;
		if (ring_offset < 96*256) {
			/* Select next 8KB Window. */
			ring_offset += semi_count;
			outb(ei_status.reg0 | ((ring_offset & 0x6000) >> 13), RamReg);
			memcpy_fromio(skb->data + semi_count, ei_status.mem, count);
		} else {
			/* Select first 8KB Window. */
			outb(ei_status.reg0, RamReg);
			memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
		}
	} else {
		memcpy_fromio(skb->data, xfer_start, count);
	}
}

static void ultra32_block_output(struct net_device *dev,
				 int count,
				 const unsigned char *buf,
				 int start_page)
{
	void __iomem *xfer_start = ei_status.mem + (start_page<<8);
	unsigned int RamReg = dev->base_addr - ULTRA32_NIC_OFFSET + ULTRA32_CFG3;

	/* Select first 8KB Window. */
	outb(ei_status.reg0, RamReg);

	memcpy_toio(xfer_start, buf, count);
}

#ifdef MODULE
#define MAX_ULTRA32_CARDS   4	/* Max number of Ultra cards per module */
static struct net_device *dev_ultra[MAX_ULTRA32_CARDS];

MODULE_DESCRIPTION("SMC Ultra32 EISA ethernet driver");
MODULE_LICENSE("GPL");

int __init init_module(void)
{
	int this_dev, found = 0;

	for (this_dev = 0; this_dev < MAX_ULTRA32_CARDS; this_dev++) {
		struct net_device *dev = ultra32_probe(-1);
		if (IS_ERR(dev))
			break;
		dev_ultra[found++] = dev;
	}
	if (found)
		return 0;
	printk(KERN_WARNING "smc-ultra32.c: No SMC Ultra32 found.\n");
	return -ENXIO;
}

void __exit cleanup_module(void)
{
	int this_dev;

	for (this_dev = 0; this_dev < MAX_ULTRA32_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-ultra32.c: An SMC Ultra32 EISA ethernet driver for linux.
	2
	3	Sources:
	4
	5	This driver is based on (cloned from) the ISA SMC Ultra driver
	6	written by Donald Becker. Modifications to support the EISA
	7	version of the card by Paul Gortmaker and Leonard N. Zubkoff.
	8
	9	This software may be used and distributed according to the terms
	10	of the GNU General Public License, incorporated herein by reference.
	11
	12	Theory of Operation:
	13
	14	The SMC Ultra32C card uses the SMC 83c790 chip which is also
	15	found on the ISA SMC Ultra cards. It has a shared memory mode of
	16	operation that makes it similar to the ISA version of the card.
	17	The main difference is that the EISA card has 32KB of RAM, but
	18	only an 8KB window into that memory. The EISA card also can be
	19	set for a bus-mastering mode of operation via the ECU, but that
	20	is not (and probably will never be) supported by this driver.
	21	The ECU should be run to enable shared memory and to disable the
	22	bus-mastering feature for use with linux.
	23
	24	By programming the 8390 to use only 8KB RAM, the modifications
	25	to the ISA driver can be limited to the probe and initialization
	26	code. This allows easy integration of EISA support into the ISA
	27	driver. However, the driver development kit from SMC provided the
	28	register information for sliding the 8KB window, and hence the 8390
	29	is programmed to use the full 32KB RAM.
	30
	31	Unfortunately this required code changes outside the probe/init
	32	routines, and thus we decided to separate the EISA driver from
	33	the ISA one. In this way, ISA users don't end up with a larger
	34	driver due to the EISA code, and EISA users don't end up with a
	35	larger driver due to the ISA EtherEZ PIO code. The driver is
	36	similar to the 3c503/16 driver, in that the window must be set
	37	back to the 1st 8KB of space for access to the two 8390 Tx slots.
	38
	39	In testing, using only 8KB RAM (3 Tx / 5 Rx) didn't appear to
	40	be a limiting factor, since the EISA bus could get packets off
	41	the card fast enough, but having the use of lots of RAM as Rx
	42	space is extra insurance if interrupt latencies become excessive.
	43
	44	*/
	45
	46	static const char *version = "smc-ultra32.c: 06/97 v1.00\n";
	47
	48
	49	#include <linux/module.h>
	50	#include <linux/eisa.h>
	51	#include <linux/kernel.h>
	52	#include <linux/errno.h>
	53	#include <linux/string.h>
	54	#include <linux/init.h>
	55	#include <linux/interrupt.h>
	56	#include <linux/netdevice.h>
	57	#include <linux/etherdevice.h>
	58
	59	#include <asm/io.h>
	60	#include <asm/system.h>
	61
	62	#include "8390.h"
	63
	64	#define DRV_NAME "smc-ultra32"
65
66	static int ultra32_probe1(struct net_device *dev, int ioaddr);
67	static int ultra32_open(struct net_device *dev);
68	static void ultra32_reset_8390(struct net_device *dev);
69	static void ultra32_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr,
70	int ring_page);
71	static void ultra32_block_input(struct net_device *dev, int count,
72	struct sk_buff *skb, int ring_offset);
73	static void ultra32_block_output(struct net_device *dev, int count,
74	const unsigned char *buf,
75	const int start_page);
76	static int ultra32_close(struct net_device *dev);
6aa20a22	77
1da177e4 LT	78	#define ULTRA32_CMDREG 0 /* Offset to ASIC command register. */
	79	#define ULTRA32_RESET 0x80 /* Board reset, in ULTRA32_CMDREG. */
	80	#define ULTRA32_MEMENB 0x40 /* Enable the shared memory. */
	81	#define ULTRA32_NIC_OFFSET 16 /* NIC register offset from the base_addr. */
	82	#define ULTRA32_IO_EXTENT 32
	83	#define EN0_ERWCNT 0x08 /* Early receive warning count. */
	84
	85	/*
	86	* Defines that apply only to the Ultra32 EISA card. Note that
	87	* "smc" = 10011 01101 00011 = 0x4da3, and hence !smc8010.cfg translates
	88	* into an EISA ID of 0x1080A34D
	89	*/
	90	#define ULTRA32_BASE 0xca0
	91	#define ULTRA32_ID 0x1080a34d
	92	#define ULTRA32_IDPORT (-0x20) /* 0xc80 */
	93	/* Config regs 1->7 from the EISA !SMC8010.CFG file. */
	94	#define ULTRA32_CFG1 0x04 /* 0xca4 */
	95	#define ULTRA32_CFG2 0x05 /* 0xca5 */
	96	#define ULTRA32_CFG3 (-0x18) /* 0xc88 */
	97	#define ULTRA32_CFG4 (-0x17) /* 0xc89 */
	98	#define ULTRA32_CFG5 (-0x16) /* 0xc8a */
	99	#define ULTRA32_CFG6 (-0x15) /* 0xc8b */
	100	#define ULTRA32_CFG7 0x0d /* 0xcad */
	101
	102	static void cleanup_card(struct net_device *dev)
	103	{
	104	int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET;
	105	/* NB: ultra32_close_card() does free_irq */
	106	release_region(ioaddr, ULTRA32_IO_EXTENT);
	107	iounmap(ei_status.mem);
	108	}
	109
	110	/* Probe for the Ultra32. This looks like a 8013 with the station
	111	address PROM at I/O ports <base>+8 to <base>+13, with a checksum
	112	following.
	113	*/
	114
	115	struct net_device * __init ultra32_probe(int unit)
	116	{
	117	struct net_device *dev;
	118	int base;
	119	int irq;
	120	int err = -ENODEV;
	121
	122	if (!EISA_bus)
	123	return ERR_PTR(-ENODEV);
	124
	125	dev = alloc_ei_netdev();
	126
	127	if (!dev)
	128	return ERR_PTR(-ENOMEM);
	129
	130	if (unit >= 0) {
	131	sprintf(dev->name, "eth%d", unit);
	132	netdev_boot_setup_check(dev);
	133	}
	134
1da177e4 LT	135	irq = dev->irq;
	136
	137	/* EISA spec allows for up to 16 slots, but 8 is typical. */
	138	for (base = 0x1000 + ULTRA32_BASE; base < 0x9000; base += 0x1000) {
	139	if (ultra32_probe1(dev, base) == 0)
	140	break;
	141	dev->irq = irq;
	142	}
	143	if (base >= 0x9000)
	144	goto out;
	145	err = register_netdev(dev);
	146	if (err)
	147	goto out1;
	148	return dev;
	149	out1:
	150	cleanup_card(dev);
	151	out:
	152	free_netdev(dev);
	153	return ERR_PTR(err);
	154	}
	155
5f352f9a SH	156
	157	static const struct net_device_ops ultra32_netdev_ops = {
	158	.ndo_open = ultra32_open,
	159	.ndo_stop = ultra32_close,
	160	.ndo_start_xmit = ei_start_xmit,
	161	.ndo_tx_timeout = ei_tx_timeout,
	162	.ndo_get_stats = ei_get_stats,
	163	.ndo_set_multicast_list = ei_set_multicast_list,
	164	.ndo_validate_addr = eth_validate_addr,
	165	.ndo_set_mac_address = eth_mac_addr,
	166	.ndo_change_mtu = eth_change_mtu,
	167	#ifdef CONFIG_NET_POLL_CONTROLLER
	168	.ndo_poll_controller = ei_poll,
	169	#endif
	170	};
	171
1da177e4 LT	172	static int __init ultra32_probe1(struct net_device *dev, int ioaddr)
	173	{
	174	int i, edge, media, retval;
	175	int checksum = 0;
	176	const char *model_name;
	177	static unsigned version_printed;
	178	/* Values from various config regs. */
	179	unsigned char idreg;
	180	unsigned char reg4;
	181	const char *ifmap[] = {"UTP No Link", "", "UTP/AUI", "UTP/BNC"};
	182
	183	if (!request_region(ioaddr, ULTRA32_IO_EXTENT, DRV_NAME))
	184	return -EBUSY;
	185
	186	if (inb(ioaddr + ULTRA32_IDPORT) == 0xff \|\|
	187	inl(ioaddr + ULTRA32_IDPORT) != ULTRA32_ID) {
	188	retval = -ENODEV;
	189	goto out;
	190	}
	191
	192	media = inb(ioaddr + ULTRA32_CFG7) & 0x03;
	193	edge = inb(ioaddr + ULTRA32_CFG5) & 0x08;
	194	printk("SMC Ultra32 in EISA Slot %d, Media: %s, %s IRQs.\n",
	195	ioaddr >> 12, ifmap[media],
	196	(edge ? "Edge Triggered" : "Level Sensitive"));
	197
	198	idreg = inb(ioaddr + 7);
	199	reg4 = inb(ioaddr + 4) & 0x7f;
	200
	201	/* Check the ID nibble. */
	202	if ((idreg & 0xf0) != 0x20) { /* SMC Ultra */
	203	retval = -ENODEV;
	204	goto out;
	205	}
	206
	207	/* Select the station address register set. */
	208	outb(reg4, ioaddr + 4);
	209
	210	for (i = 0; i < 8; i++)
	211	checksum += inb(ioaddr + 8 + i);
	212	if ((checksum & 0xff) != 0xff) {
	213	retval = -ENODEV;
	214	goto out;
	215	}
	216
	217	if (ei_debug && version_printed++ == 0)
	218	printk(version);
	219
	220	model_name = "SMC Ultra32";
	221
1da177e4	222	for (i = 0; i < 6; i++)
0795af57 JP	223	dev->dev_addr[i] = inb(ioaddr + 8 + i);
0795af57 JP	224
e174961c JB	225	printk("%s: %s at 0x%X, %pM",
e174961c JB	226	dev->name, model_name, ioaddr, dev->dev_addr);
1da177e4 LT	227
	228	/* Switch from the station address to the alternate register set and
	229	read the useful registers there. */
	230	outb(0x80 \| reg4, ioaddr + 4);
	231
	232	/* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot. */
	233	outb(0x80 \| inb(ioaddr + 0x0c), ioaddr + 0x0c);
	234
	235	/* Reset RAM addr. */
	236	outb(0x00, ioaddr + 0x0b);
	237
	238	/* Switch back to the station address register set so that the
	239	MS-DOS driver can find the card after a warm boot. */
	240	outb(reg4, ioaddr + 4);
	241
	242	if ((inb(ioaddr + ULTRA32_CFG5) & 0x40) == 0) {
	243	printk("\nsmc-ultra32: Card RAM is disabled! "
	244	"Run EISA config utility.\n");
	245	retval = -ENODEV;
	246	goto out;
	247	}
	248	if ((inb(ioaddr + ULTRA32_CFG2) & 0x04) == 0)
	249	printk("\nsmc-ultra32: Ignoring Bus-Master enable bit. "
	250	"Run EISA config utility.\n");
	251
	252	if (dev->irq < 2) {
	253	unsigned char irqmap[] = {0, 9, 3, 5, 7, 10, 11, 15};
	254	int irq = irqmap[inb(ioaddr + ULTRA32_CFG5) & 0x07];
	255	if (irq == 0) {
	256	printk(", failed to detect IRQ line.\n");
	257	retval = -EAGAIN;
	258	goto out;
	259	}
	260	dev->irq = irq;
	261	}
	262
	263	/* The 8390 isn't at the base address, so fake the offset */
	264	dev->base_addr = ioaddr + ULTRA32_NIC_OFFSET;
	265
	266	/* Save RAM address in the unused reg0 to avoid excess inb's. */
	267	ei_status.reg0 = inb(ioaddr + ULTRA32_CFG3) & 0xfc;
	268
	269	dev->mem_start = 0xc0000 + ((ei_status.reg0 & 0x7c) << 11);
	270
	271	ei_status.name = model_name;
	272	ei_status.word16 = 1;
	273	ei_status.tx_start_page = 0;
	274	ei_status.rx_start_page = TX_PAGES;
	275	/* All Ultra32 cards have 32KB memory with an 8KB window. */
	276	ei_status.stop_page = 128;
	277
	278	ei_status.mem = ioremap(dev->mem_start, 0x2000);
	279	if (!ei_status.mem) {
	280	printk(", failed to ioremap.\n");
	281	retval = -ENOMEM;
	282	goto out;
	283	}
	284	dev->mem_end = dev->mem_start + 0x1fff;
	285
	286	printk(", IRQ %d, 32KB memory, 8KB window at 0x%lx-0x%lx.\n",
	287	dev->irq, dev->mem_start, dev->mem_end);
	288	ei_status.block_input = &ultra32_block_input;
	289	ei_status.block_output = &ultra32_block_output;
	290	ei_status.get_8390_hdr = &ultra32_get_8390_hdr;
291	ei_status.reset_8390 = &ultra32_reset_8390;
5f352f9a SH	292
5f352f9a SH	293	dev->netdev_ops = &ultra32_netdev_ops;
1da177e4 LT	294	NS8390_init(dev, 0);
	295
	296	return 0;
	297	out:
	298	release_region(ioaddr, ULTRA32_IO_EXTENT);
	299	return retval;
	300	}
	301
	302	static int ultra32_open(struct net_device *dev)
	303	{
	304	int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET; /* ASIC addr */
1fb9df5d	305	int irq_flags = (inb(ioaddr + ULTRA32_CFG5) & 0x08) ? 0 : IRQF_SHARED;
1da177e4 LT	306	int retval;
	307
	308	retval = request_irq(dev->irq, ei_interrupt, irq_flags, dev->name, dev);
	309	if (retval)
	310	return retval;
	311
	312	outb(ULTRA32_MEMENB, ioaddr); /* Enable Shared Memory. */
	313	outb(0x80, ioaddr + ULTRA32_CFG6); /* Enable Interrupts. */
	314	outb(0x84, ioaddr + 5); /* Enable MEM16 & Disable Bus Master. */
	315	outb(0x01, ioaddr + 6); /* Enable Interrupts. */
	316	/* Set the early receive warning level in window 0 high enough not
	317	to receive ERW interrupts. */
	318	outb_p(E8390_NODMA+E8390_PAGE0, dev->base_addr);
	319	outb(0xff, dev->base_addr + EN0_ERWCNT);
	320	ei_open(dev);
	321	return 0;
	322	}
	323
	324	static int ultra32_close(struct net_device *dev)
	325	{
	326	int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET; /* CMDREG */
	327
	328	netif_stop_queue(dev);
6aa20a22	329
1da177e4 LT	330	if (ei_debug > 1)
	331	printk("%s: Shutting down ethercard.\n", dev->name);
	332
	333	outb(0x00, ioaddr + ULTRA32_CFG6); /* Disable Interrupts. */
	334	outb(0x00, ioaddr + 6); /* Disable interrupts. */
	335	free_irq(dev->irq, dev);
	336
	337	NS8390_init(dev, 0);
	338
	339	return 0;
	340	}
	341
	342	static void ultra32_reset_8390(struct net_device *dev)
	343	{
	344	int ioaddr = dev->base_addr - ULTRA32_NIC_OFFSET; /* ASIC base addr */
	345
	346	outb(ULTRA32_RESET, ioaddr);
	347	if (ei_debug > 1) printk("resetting Ultra32, t=%ld...", jiffies);
	348	ei_status.txing = 0;
	349
	350	outb(ULTRA32_MEMENB, ioaddr); /* Enable Shared Memory. */
	351	outb(0x80, ioaddr + ULTRA32_CFG6); /* Enable Interrupts. */
	352	outb(0x84, ioaddr + 5); /* Enable MEM16 & Disable Bus Master. */
	353	outb(0x01, ioaddr + 6); /* Enable Interrupts. */
	354	if (ei_debug > 1) printk("reset done\n");
1da177e4 LT	355	}
	356
	357	/* Grab the 8390 specific header. Similar to the block_input routine, but
	358	we don't need to be concerned with ring wrap as the header will be at
	359	the start of a page, so we optimize accordingly. */
	360
	361	static void ultra32_get_8390_hdr(struct net_device *dev,
	362	struct e8390_pkt_hdr *hdr,
	363	int ring_page)
	364	{
	365	void __iomem *hdr_start = ei_status.mem + ((ring_page & 0x1f) << 8);
	366	unsigned int RamReg = dev->base_addr - ULTRA32_NIC_OFFSET + ULTRA32_CFG3;
	367
	368	/* Select correct 8KB Window. */
	369	outb(ei_status.reg0 \| ((ring_page & 0x60) >> 5), RamReg);
	370
	371	#ifdef __BIG_ENDIAN
	372	/* Officially this is what we are doing, but the readl() is faster */
	373	/* unfortunately it isn't endian aware of the struct */
	374	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	375	hdr->count = le16_to_cpu(hdr->count);
	376	#else
	377	((unsigned int*)hdr)[0] = readl(hdr_start);
	378	#endif
	379	}
	380
	381	/* Block input and output are easy on shared memory ethercards, the only
	382	complication is when the ring buffer wraps, or in this case, when a
	383	packet spans an 8KB boundary. Note that the current 8KB segment is
	384	already set by the get_8390_hdr routine. */
	385
	386	static void ultra32_block_input(struct net_device *dev,
	387	int count,
	388	struct sk_buff *skb,
	389	int ring_offset)
	390	{
	391	void __iomem *xfer_start = ei_status.mem + (ring_offset & 0x1fff);
	392	unsigned int RamReg = dev->base_addr - ULTRA32_NIC_OFFSET + ULTRA32_CFG3;
	393
	394	if ((ring_offset & ~0x1fff) != ((ring_offset + count - 1) & ~0x1fff)) {
	395	int semi_count = 8192 - (ring_offset & 0x1FFF);
	396	memcpy_fromio(skb->data, xfer_start, semi_count);
	397	count -= semi_count;
	398	if (ring_offset < 96*256) {
	399	/* Select next 8KB Window. */
	400	ring_offset += semi_count;
	401	outb(ei_status.reg0 \| ((ring_offset & 0x6000) >> 13), RamReg);
	402	memcpy_fromio(skb->data + semi_count, ei_status.mem, count);
	403	} else {
	404	/* Select first 8KB Window. */
	405	outb(ei_status.reg0, RamReg);
	406	memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count);
	407	}
	408	} else {
4ec03116	409	memcpy_fromio(skb->data, xfer_start, count);
1da177e4 LT	410	}
	411	}
	412
	413	static void ultra32_block_output(struct net_device *dev,
	414	int count,
	415	const unsigned char *buf,
	416	int start_page)
	417	{
	418	void __iomem *xfer_start = ei_status.mem + (start_page<<8);
	419	unsigned int RamReg = dev->base_addr - ULTRA32_NIC_OFFSET + ULTRA32_CFG3;
	420
	421	/* Select first 8KB Window. */
	422	outb(ei_status.reg0, RamReg);
	423
	424	memcpy_toio(xfer_start, buf, count);
	425	}
6aa20a22	426
1da177e4 LT	427	#ifdef MODULE
	428	#define MAX_ULTRA32_CARDS 4 /* Max number of Ultra cards per module */
	429	static struct net_device *dev_ultra[MAX_ULTRA32_CARDS];
	430
	431	MODULE_DESCRIPTION("SMC Ultra32 EISA ethernet driver");
	432	MODULE_LICENSE("GPL");
	433
a2bd2ec8	434	int __init init_module(void)
1da177e4 LT	435	{
	436	int this_dev, found = 0;
	437
	438	for (this_dev = 0; this_dev < MAX_ULTRA32_CARDS; this_dev++) {
	439	struct net_device *dev = ultra32_probe(-1);
	440	if (IS_ERR(dev))
	441	break;
	442	dev_ultra[found++] = dev;
	443	}
	444	if (found)
	445	return 0;
	446	printk(KERN_WARNING "smc-ultra32.c: No SMC Ultra32 found.\n");
	447	return -ENXIO;
	448	}
	449
afc8eb46	450	void __exit cleanup_module(void)
1da177e4 LT	451	{
	452	int this_dev;
	453
	454	for (this_dev = 0; this_dev < MAX_ULTRA32_CARDS; this_dev++) {
	455	struct net_device *dev = dev_ultra[this_dev];
	456	if (dev) {
	457	unregister_netdev(dev);
	458	cleanup_card(dev);
	459	free_netdev(dev);
	460	}
	461	}
	462	}
	463	#endif /* MODULE */
	464