[linux.git] / drivers / net / es3210.c

/*
	es3210.c

	Linux driver for Racal-Interlan ES3210 EISA Network Adapter

	Copyright (C) 1996, Paul Gortmaker.

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

	Information and Code Sources:

	1) The existing myriad of Linux 8390 drivers written by Donald Becker.

	2) Once again Russ Nelson's asm packet driver provided additional info.

	3) Info for getting IRQ and sh-mem gleaned from the EISA cfg files.
	   Too bad it doesn't work -- see below.

	The ES3210 is an EISA shared memory NS8390 implementation. Note
	that all memory copies to/from the board must be 32bit transfers.
	Which rules out using eth_io_copy_and_sum() in this driver.

	Apparently there are two slightly different revisions of the
	card, since there are two distinct EISA cfg files (!rii0101.cfg
	and !rii0102.cfg) One has media select in the cfg file and the
	other doesn't. Hopefully this will work with either.

	That is about all I can tell you about it, having never actually
	even seen one of these cards. :)  Try http://www.interlan.com
	if you want more info.

	Thanks go to Mark Salazar for testing v0.02 of this driver.

	Bugs, to-fix, etc:

	1) The EISA cfg ports that are *supposed* to have the IRQ and shared
	   mem values just read 0xff all the time. Hrrmpf. Apparently the
	   same happens with the packet driver as the code for reading
	   these registers is disabled there. In the meantime, boot with:
	   ether=<IRQ>,0,0x<shared_mem_addr>,eth0 to override the IRQ and
	   shared memory detection. (The i/o port detection is okay.)

	2) Module support currently untested. Probably works though.

*/

static const char version[] =
	"es3210.c: Driver revision v0.03, 14/09/96\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/netdevice.h>
#include <linux/etherdevice.h>

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

#include "8390.h"

static int es_probe1(struct net_device *dev, int ioaddr);

static int es_open(struct net_device *dev);
static int es_close(struct net_device *dev);

static void es_reset_8390(struct net_device *dev);

static void es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
static void es_block_output(struct net_device *dev, int count, const unsigned char *buf, int start_page);

#define ES_START_PG	0x00    /* First page of TX buffer		*/
#define ES_STOP_PG	0x40    /* Last page +1 of RX ring		*/

#define ES_IO_EXTENT	0x37	/* The cfg file says 0xc90 -> 0xcc7	*/
#define ES_ID_PORT	0xc80	/* Same for all EISA cards 		*/
#define ES_SA_PROM	0xc90	/* Start of e'net addr.			*/
#define ES_RESET_PORT	0xc84	/* From the packet driver source	*/
#define ES_NIC_OFFSET	0xca0	/* Hello, the 8390 is *here*		*/

#define ES_ADDR0	0x02	/* 3 byte vendor prefix			*/
#define ES_ADDR1	0x07
#define ES_ADDR2	0x01

/*
 * Two card revisions. EISA ID's are always rev. minor, rev. major,, and
 * then the three vendor letters stored in 5 bits each, with an "a" = 1.
 * For eg: "rii" = 10010 01001 01001 = 0x4929, which is how the EISA
 * config utility determines automagically what config file(s) to use.
 */
#define ES_EISA_ID1	0x01012949	/* !rii0101.cfg 		*/
#define ES_EISA_ID2	0x02012949	/* !rii0102.cfg 		*/

#define ES_CFG1		0xcc0	/* IOPORT(1) --> IOPORT(6) in cfg file	*/
#define ES_CFG2		0xcc1
#define ES_CFG3		0xcc2
#define ES_CFG4		0xcc3
#define ES_CFG5		0xcc4
#define ES_CFG6		0xc84	/* NB: 0xc84 is also "reset" port.	*/

/*
 *	You can OR any of the following bits together and assign it
 *	to ES_DEBUG to get verbose driver info during operation.
 *	Some of these don't do anything yet.
 */

#define ES_D_PROBE	0x01
#define ES_D_RX_PKT	0x02
#define ES_D_TX_PKT	0x04
#define ED_D_IRQ	0x08

#define ES_DEBUG	0

static unsigned char lo_irq_map[] __initdata = {3, 4, 5, 6, 7, 9, 10};
static unsigned char hi_irq_map[] __initdata = {11, 12, 0, 14, 0, 0, 0, 15};

/*
 *	Probe for the card. The best way is to read the EISA ID if it
 *	is known. Then we check the prefix of the station address
 *	PROM for a match against the Racal-Interlan assigned value.
 */

static int __init do_es_probe(struct net_device *dev)
{
	unsigned short ioaddr = dev->base_addr;
	int irq = dev->irq;
	int mem_start = dev->mem_start;

	SET_MODULE_OWNER(dev);

	if (ioaddr > 0x1ff)		/* Check a single specified location. */
		return es_probe1(dev, ioaddr);
	else if (ioaddr > 0)		/* Don't probe at all. */
		return -ENXIO;

	if (!EISA_bus) {
#if ES_DEBUG & ES_D_PROBE
		printk("es3210.c: Not EISA bus. Not probing high ports.\n");
#endif
		return -ENXIO;
	}

	/* EISA spec allows for up to 16 slots, but 8 is typical. */
	for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
		if (es_probe1(dev, ioaddr) == 0)
			return 0;
		dev->irq = irq;
		dev->mem_start = mem_start;
	}

	return -ENODEV;
}

#ifndef MODULE
struct net_device * __init es_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_es_probe(dev);
	if (err)
		goto out;
	return dev;
out:
	free_netdev(dev);
	return ERR_PTR(err);
}
#endif

static int __init es_probe1(struct net_device *dev, int ioaddr)
{
	int i, retval;
	unsigned long eisa_id;

	if (!request_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT, "es3210"))
		return -ENODEV;

#if ES_DEBUG & ES_D_PROBE
	printk("es3210.c: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + ES_ID_PORT));
	printk("es3210.c: config regs: %#x %#x %#x %#x %#x %#x\n",
		inb(ioaddr + ES_CFG1), inb(ioaddr + ES_CFG2), inb(ioaddr + ES_CFG3),
		inb(ioaddr + ES_CFG4), inb(ioaddr + ES_CFG5), inb(ioaddr + ES_CFG6));
#endif


/*	Check the EISA ID of the card. */
	eisa_id = inl(ioaddr + ES_ID_PORT);
	if ((eisa_id != ES_EISA_ID1) && (eisa_id != ES_EISA_ID2)) {
		retval = -ENODEV;
		goto out;
	}

/*	Check the Racal vendor ID as well. */
	if (inb(ioaddr + ES_SA_PROM + 0) != ES_ADDR0
		|| inb(ioaddr + ES_SA_PROM + 1) != ES_ADDR1
		|| inb(ioaddr + ES_SA_PROM + 2) != ES_ADDR2 ) {
		printk("es3210.c: card not found");
		for(i = 0; i < ETHER_ADDR_LEN; i++)
			printk(" %02x", inb(ioaddr + ES_SA_PROM + i));
		printk(" (invalid prefix).\n");
		retval = -ENODEV;
		goto out;
	}

	printk("es3210.c: ES3210 rev. %ld at %#x, node", eisa_id>>24, ioaddr);
	for(i = 0; i < ETHER_ADDR_LEN; i++)
		printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + ES_SA_PROM + i)));

	/* Snarf the interrupt now. */
	if (dev->irq == 0) {
		unsigned char hi_irq = inb(ioaddr + ES_CFG2) & 0x07;
		unsigned char lo_irq = inb(ioaddr + ES_CFG1) & 0xfe;

		if (hi_irq != 0) {
			dev->irq = hi_irq_map[hi_irq - 1];
		} else {
			int i = 0;
			while (lo_irq > (1<<i)) i++;
			dev->irq = lo_irq_map[i];
		}
		printk(" using IRQ %d", dev->irq);
#if ES_DEBUG & ES_D_PROBE
		printk("es3210.c: hi_irq %#x, lo_irq %#x, dev->irq = %d\n",
					hi_irq, lo_irq, dev->irq);
#endif
	} else {
		if (dev->irq == 2)
			dev->irq = 9;			/* Doh! */
		printk(" assigning IRQ %d", dev->irq);
	}

	if (request_irq(dev->irq, ei_interrupt, 0, "es3210", dev)) {
		printk (" unable to get IRQ %d.\n", dev->irq);
		retval = -EAGAIN;
		goto out;
	}

	if (dev->mem_start == 0) {
		unsigned char mem_enabled = inb(ioaddr + ES_CFG2) & 0xc0;
		unsigned char mem_bits = inb(ioaddr + ES_CFG3) & 0x07;

		if (mem_enabled != 0x80) {
			printk(" shared mem disabled - giving up\n");
			retval = -ENXIO;
			goto out1;
		}
		dev->mem_start = 0xC0000 + mem_bits*0x4000;
		printk(" using ");
	} else {
		printk(" assigning ");
	}

	ei_status.mem = ioremap(dev->mem_start, (ES_STOP_PG - ES_START_PG)*256);
	if (!ei_status.mem) {
		printk("ioremap failed - giving up\n");
		retval = -ENXIO;
		goto out1;
	}

	dev->mem_end = dev->mem_start + (ES_STOP_PG - ES_START_PG)*256;

	printk("mem %#lx-%#lx\n", dev->mem_start, dev->mem_end-1);

#if ES_DEBUG & ES_D_PROBE
	if (inb(ioaddr + ES_CFG5))
		printk("es3210: Warning - DMA channel enabled, but not used here.\n");
#endif
	/* Note, point at the 8390, and not the card... */
	dev->base_addr = ioaddr + ES_NIC_OFFSET;

	ei_status.name = "ES3210";
	ei_status.tx_start_page = ES_START_PG;
	ei_status.rx_start_page = ES_START_PG + TX_PAGES;
	ei_status.stop_page = ES_STOP_PG;
	ei_status.word16 = 1;

	if (ei_debug > 0)
		printk(version);

	ei_status.reset_8390 = &es_reset_8390;
	ei_status.block_input = &es_block_input;
	ei_status.block_output = &es_block_output;
	ei_status.get_8390_hdr = &es_get_8390_hdr;

	dev->open = &es_open;
	dev->stop = &es_close;
#ifdef CONFIG_NET_POLL_CONTROLLER
	dev->poll_controller = ei_poll;
#endif
	NS8390_init(dev, 0);

	retval = register_netdev(dev);
	if (retval)
		goto out1;
	return 0;
out1:
	free_irq(dev->irq, dev);
out:
	release_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT);
	return retval;
}

/*
 *	Reset as per the packet driver method. Judging by the EISA cfg
 *	file, this just toggles the "Board Enable" bits (bit 2 and 0).
 */

static void es_reset_8390(struct net_device *dev)
{
	unsigned short ioaddr = dev->base_addr;
	unsigned long end;

	outb(0x04, ioaddr + ES_RESET_PORT);
	if (ei_debug > 1) printk("%s: resetting the ES3210...", dev->name);

	end = jiffies + 2*HZ/100;
        while ((signed)(end - jiffies) > 0) continue;

	ei_status.txing = 0;
	outb(0x01, ioaddr + ES_RESET_PORT);
	if (ei_debug > 1) printk("reset done\n");

	return;
}

/*
 *	Note: In the following three functions is the implicit assumption
 *	that the associated memcpy will only use "rep; movsl" as long as
 *	we keep the counts as some multiple of doublewords. This is a
 *	requirement of the hardware, and also prevents us from using
 *	eth_io_copy_and_sum() since we can't guarantee it will limit
 *	itself to doubleword access.
 */

/*
 *	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. (A single doubleword.)
 */

static void
es_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
	void __iomem *hdr_start = ei_status.mem + ((ring_page - ES_START_PG)<<8);
	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	hdr->count = (hdr->count + 3) & ~3;     /* Round up allocation. */
}

/*
 *	Block input and output are easy on shared memory ethercards, the only
 *	complication is when the ring buffer wraps. The count will already
 *	be rounded up to a doubleword value via es_get_8390_hdr() above.
 */

static void es_block_input(struct net_device *dev, int count, struct sk_buff *skb,
						  int ring_offset)
{
	void __iomem *xfer_start = ei_status.mem + ring_offset - ES_START_PG*256;

	if (ring_offset + count > ES_STOP_PG*256) {
		/* Packet wraps over end of ring buffer. */
		int semi_count = ES_STOP_PG*256 - ring_offset;
		memcpy_fromio(skb->data, xfer_start, semi_count);
		count -= semi_count;
		memcpy_fromio(skb->data + semi_count, ei_status.mem, count);
	} else {
		/* Packet is in one chunk. */
		eth_io_copy_and_sum(skb, xfer_start, count, 0);
	}
}

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

	count = (count + 3) & ~3;     /* Round up to doubleword */
	memcpy_toio(shmem, buf, count);
}

static int es_open(struct net_device *dev)
{
	ei_open(dev);
	return 0;
}

static int es_close(struct net_device *dev)
{

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

	ei_close(dev);
	return 0;
}

#ifdef MODULE
#define MAX_ES_CARDS	4	/* Max number of ES3210 cards per module */
#define NAMELEN		8	/* # of chars for storing dev->name */
static struct net_device *dev_es3210[MAX_ES_CARDS];
static int io[MAX_ES_CARDS];
static int irq[MAX_ES_CARDS];
static int mem[MAX_ES_CARDS];

module_param_array(io, int, NULL, 0);
module_param_array(irq, int, NULL, 0);
module_param_array(mem, int, NULL, 0);
MODULE_PARM_DESC(io, "I/O base address(es)");
MODULE_PARM_DESC(irq, "IRQ number(s)");
MODULE_PARM_DESC(mem, "memory base address(es)");
MODULE_DESCRIPTION("Racal-Interlan ES3210 EISA ethernet driver");
MODULE_LICENSE("GPL");

int
init_module(void)
{
	struct net_device *dev;
	int this_dev, found = 0;

	for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
		if (io[this_dev] == 0 && this_dev != 0)
			break;
		dev = alloc_ei_netdev();
		if (!dev)
			break;
		dev->irq = irq[this_dev];
		dev->base_addr = io[this_dev];
		dev->mem_start = mem[this_dev];
		if (do_es_probe(dev) == 0) {
			dev_es3210[found++] = dev;
			continue;
		}
		free_netdev(dev);
		printk(KERN_WARNING "es3210.c: No es3210 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)
{
	free_irq(dev->irq, dev);
	release_region(dev->base_addr, ES_IO_EXTENT);
	iounmap(ei_status.mem);
}

void
cleanup_module(void)
{
	int this_dev;

	for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
		struct net_device *dev = dev_es3210[this_dev];
		if (dev) {
			unregister_netdev(dev);
			cleanup_card(dev);
			free_netdev(dev);
		}
	}
}
#endif /* MODULE */
Commit	Line	Data
1da177e4 LT	1	/*
	2	es3210.c
	3
	4	Linux driver for Racal-Interlan ES3210 EISA Network Adapter
	5
	6	Copyright (C) 1996, Paul Gortmaker.
	7
	8	This software may be used and distributed according to the terms
	9	of the GNU General Public License, incorporated herein by reference.
	10
	11	Information and Code Sources:
	12
	13	1) The existing myriad of Linux 8390 drivers written by Donald Becker.
	14
	15	2) Once again Russ Nelson's asm packet driver provided additional info.
	16
	17	3) Info for getting IRQ and sh-mem gleaned from the EISA cfg files.
	18	Too bad it doesn't work -- see below.
	19
	20	The ES3210 is an EISA shared memory NS8390 implementation. Note
	21	that all memory copies to/from the board must be 32bit transfers.
	22	Which rules out using eth_io_copy_and_sum() in this driver.
	23
	24	Apparently there are two slightly different revisions of the
	25	card, since there are two distinct EISA cfg files (!rii0101.cfg
	26	and !rii0102.cfg) One has media select in the cfg file and the
	27	other doesn't. Hopefully this will work with either.
	28
	29	That is about all I can tell you about it, having never actually
	30	even seen one of these cards. :) Try http://www.interlan.com
	31	if you want more info.
	32
	33	Thanks go to Mark Salazar for testing v0.02 of this driver.
	34
	35	Bugs, to-fix, etc:
	36
	37	1) The EISA cfg ports that are supposed to have the IRQ and shared
	38	mem values just read 0xff all the time. Hrrmpf. Apparently the
	39	same happens with the packet driver as the code for reading
	40	these registers is disabled there. In the meantime, boot with:
	41	ether=<IRQ>,0,0x<shared_mem_addr>,eth0 to override the IRQ and
	42	shared memory detection. (The i/o port detection is okay.)
	43
	44	2) Module support currently untested. Probably works though.
	45
	46	*/
	47
	48	static const char version[] =
	49	"es3210.c: Driver revision v0.03, 14/09/96\n";
	50
	51	#include <linux/module.h>
	52	#include <linux/eisa.h>
	53	#include <linux/kernel.h>
	54	#include <linux/errno.h>
	55	#include <linux/string.h>
	56	#include <linux/init.h>
	57	#include <linux/netdevice.h>
	58	#include <linux/etherdevice.h>
	59
	60	#include <asm/io.h>
	61	#include <asm/system.h>
	62
	63	#include "8390.h"
	64
65	static int es_probe1(struct net_device *dev, int ioaddr);
66
67	static int es_open(struct net_device *dev);
68	static int es_close(struct net_device *dev);
69
70	static void es_reset_8390(struct net_device *dev);
71
72	static void es_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page);
73	static void es_block_input(struct net_device dev, int count, struct sk_buff skb, int ring_offset);
74	static void es_block_output(struct net_device dev, int count, const unsigned char buf, int start_page);
75
76	#define ES_START_PG 0x00 /* First page of TX buffer */
77	#define ES_STOP_PG 0x40 /* Last page +1 of RX ring */
78
79	#define ES_IO_EXTENT 0x37 /* The cfg file says 0xc90 -> 0xcc7 */
80	#define ES_ID_PORT 0xc80 /* Same for all EISA cards */
81	#define ES_SA_PROM 0xc90 /* Start of e'net addr. */
82	#define ES_RESET_PORT 0xc84 /* From the packet driver source */
83	#define ES_NIC_OFFSET 0xca0 /* Hello, the 8390 is here */
84
85	#define ES_ADDR0 0x02 /* 3 byte vendor prefix */
86	#define ES_ADDR1 0x07
87	#define ES_ADDR2 0x01
88
89	/*
90	* Two card revisions. EISA ID's are always rev. minor, rev. major,, and
91	* then the three vendor letters stored in 5 bits each, with an "a" = 1.
92	* For eg: "rii" = 10010 01001 01001 = 0x4929, which is how the EISA
93	* config utility determines automagically what config file(s) to use.
94	*/
95	#define ES_EISA_ID1 0x01012949 /* !rii0101.cfg */
96	#define ES_EISA_ID2 0x02012949 /* !rii0102.cfg */
97
98	#define ES_CFG1 0xcc0 /* IOPORT(1) --> IOPORT(6) in cfg file */
99	#define ES_CFG2 0xcc1
100	#define ES_CFG3 0xcc2
101	#define ES_CFG4 0xcc3
102	#define ES_CFG5 0xcc4
103	#define ES_CFG6 0xc84 /* NB: 0xc84 is also "reset" port. */
104
105	/*
106	* You can OR any of the following bits together and assign it
107	* to ES_DEBUG to get verbose driver info during operation.
108	* Some of these don't do anything yet.
109	*/
110
111	#define ES_D_PROBE 0x01
112	#define ES_D_RX_PKT 0x02
113	#define ES_D_TX_PKT 0x04
114	#define ED_D_IRQ 0x08
115
116	#define ES_DEBUG 0
117
118	static unsigned char lo_irq_map[] __initdata = {3, 4, 5, 6, 7, 9, 10};
119	static unsigned char hi_irq_map[] __initdata = {11, 12, 0, 14, 0, 0, 0, 15};
120
121	/*
122	* Probe for the card. The best way is to read the EISA ID if it
123	* is known. Then we check the prefix of the station address
124	* PROM for a match against the Racal-Interlan assigned value.
125	*/
126
127	static int __init do_es_probe(struct net_device *dev)
128	{
129	unsigned short ioaddr = dev->base_addr;
130	int irq = dev->irq;
131	int mem_start = dev->mem_start;
132
133	SET_MODULE_OWNER(dev);
134
135	if (ioaddr > 0x1ff) /* Check a single specified location. */
136	return es_probe1(dev, ioaddr);
137	else if (ioaddr > 0) /* Don't probe at all. */
138	return -ENXIO;
139
140	if (!EISA_bus) {
141	#if ES_DEBUG & ES_D_PROBE
142	printk("es3210.c: Not EISA bus. Not probing high ports.\n");
143	#endif
144	return -ENXIO;
145	}
146
147	/* EISA spec allows for up to 16 slots, but 8 is typical. */
148	for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
149	if (es_probe1(dev, ioaddr) == 0)
150	return 0;
151	dev->irq = irq;
152	dev->mem_start = mem_start;
153	}
154
155	return -ENODEV;
156	}
157
1da177e4 LT	158	#ifndef MODULE
	159	struct net_device * __init es_probe(int unit)
	160	{
	161	struct net_device *dev = alloc_ei_netdev();
	162	int err;
	163
	164	if (!dev)
	165	return ERR_PTR(-ENOMEM);
	166
	167	sprintf(dev->name, "eth%d", unit);
	168	netdev_boot_setup_check(dev);
	169
	170	err = do_es_probe(dev);
	171	if (err)
	172	goto out;
1da177e4	173	return dev;
1da177e4 LT	174	out:
	175	free_netdev(dev);
	176	return ERR_PTR(err);
	177	}
	178	#endif
	179
	180	static int __init es_probe1(struct net_device *dev, int ioaddr)
	181	{
	182	int i, retval;
	183	unsigned long eisa_id;
	184
	185	if (!request_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT, "es3210"))
	186	return -ENODEV;
	187
	188	#if ES_DEBUG & ES_D_PROBE
	189	printk("es3210.c: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + ES_ID_PORT));
	190	printk("es3210.c: config regs: %#x %#x %#x %#x %#x %#x\n",
	191	inb(ioaddr + ES_CFG1), inb(ioaddr + ES_CFG2), inb(ioaddr + ES_CFG3),
	192	inb(ioaddr + ES_CFG4), inb(ioaddr + ES_CFG5), inb(ioaddr + ES_CFG6));
	193	#endif
	194
	195
	196	/* Check the EISA ID of the card. */
	197	eisa_id = inl(ioaddr + ES_ID_PORT);
	198	if ((eisa_id != ES_EISA_ID1) && (eisa_id != ES_EISA_ID2)) {
	199	retval = -ENODEV;
	200	goto out;
	201	}
	202
	203	/* Check the Racal vendor ID as well. */
	204	if (inb(ioaddr + ES_SA_PROM + 0) != ES_ADDR0
	205	\|\| inb(ioaddr + ES_SA_PROM + 1) != ES_ADDR1
	206	\|\| inb(ioaddr + ES_SA_PROM + 2) != ES_ADDR2 ) {
	207	printk("es3210.c: card not found");
	208	for(i = 0; i < ETHER_ADDR_LEN; i++)
	209	printk(" %02x", inb(ioaddr + ES_SA_PROM + i));
	210	printk(" (invalid prefix).\n");
	211	retval = -ENODEV;
	212	goto out;
	213	}
	214
	215	printk("es3210.c: ES3210 rev. %ld at %#x, node", eisa_id>>24, ioaddr);
	216	for(i = 0; i < ETHER_ADDR_LEN; i++)
	217	printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + ES_SA_PROM + i)));
	218
	219	/* Snarf the interrupt now. */
	220	if (dev->irq == 0) {
	221	unsigned char hi_irq = inb(ioaddr + ES_CFG2) & 0x07;
	222	unsigned char lo_irq = inb(ioaddr + ES_CFG1) & 0xfe;
	223
	224	if (hi_irq != 0) {
	225	dev->irq = hi_irq_map[hi_irq - 1];
	226	} else {
	227	int i = 0;
	228	while (lo_irq > (1<<i)) i++;
	229	dev->irq = lo_irq_map[i];
	230	}
	231	printk(" using IRQ %d", dev->irq);
	232	#if ES_DEBUG & ES_D_PROBE
	233	printk("es3210.c: hi_irq %#x, lo_irq %#x, dev->irq = %d\n",
	234	hi_irq, lo_irq, dev->irq);
	235	#endif
	236	} else {
	237	if (dev->irq == 2)
238	dev->irq = 9; /* Doh! */
239	printk(" assigning IRQ %d", dev->irq);
240	}
241
242	if (request_irq(dev->irq, ei_interrupt, 0, "es3210", dev)) {
243	printk (" unable to get IRQ %d.\n", dev->irq);
244	retval = -EAGAIN;
245	goto out;
246	}
247
248	if (dev->mem_start == 0) {
249	unsigned char mem_enabled = inb(ioaddr + ES_CFG2) & 0xc0;
250	unsigned char mem_bits = inb(ioaddr + ES_CFG3) & 0x07;
251
252	if (mem_enabled != 0x80) {
253	printk(" shared mem disabled - giving up\n");
254	retval = -ENXIO;
255	goto out1;
256	}
257	dev->mem_start = 0xC0000 + mem_bits*0x4000;
258	printk(" using ");
259	} else {
260	printk(" assigning ");
261	}
262
263	ei_status.mem = ioremap(dev->mem_start, (ES_STOP_PG - ES_START_PG)*256);
264	if (!ei_status.mem) {
265	printk("ioremap failed - giving up\n");
266	retval = -ENXIO;
267	goto out1;
268	}
269
270	dev->mem_end = dev->mem_start + (ES_STOP_PG - ES_START_PG)*256;
271
272	printk("mem %#lx-%#lx\n", dev->mem_start, dev->mem_end-1);
273
274	#if ES_DEBUG & ES_D_PROBE
275	if (inb(ioaddr + ES_CFG5))
276	printk("es3210: Warning - DMA channel enabled, but not used here.\n");
277	#endif
278	/* Note, point at the 8390, and not the card... */
279	dev->base_addr = ioaddr + ES_NIC_OFFSET;
280
281	ei_status.name = "ES3210";
282	ei_status.tx_start_page = ES_START_PG;
283	ei_status.rx_start_page = ES_START_PG + TX_PAGES;
284	ei_status.stop_page = ES_STOP_PG;
285	ei_status.word16 = 1;
286
287	if (ei_debug > 0)
288	printk(version);
289
290	ei_status.reset_8390 = &es_reset_8390;
291	ei_status.block_input = &es_block_input;
292	ei_status.block_output = &es_block_output;
293	ei_status.get_8390_hdr = &es_get_8390_hdr;
294
295	dev->open = &es_open;
296	dev->stop = &es_close;
297	#ifdef CONFIG_NET_POLL_CONTROLLER
298	dev->poll_controller = ei_poll;
299	#endif
300	NS8390_init(dev, 0);
b1fc5505 HX	301
	302	retval = register_netdev(dev);
	303	if (retval)
	304	goto out1;
1da177e4 LT	305	return 0;
	306	out1:
	307	free_irq(dev->irq, dev);
	308	out:
	309	release_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT);
	310	return retval;
	311	}
	312
	313	/*
	314	* Reset as per the packet driver method. Judging by the EISA cfg
	315	* file, this just toggles the "Board Enable" bits (bit 2 and 0).
	316	*/
	317
	318	static void es_reset_8390(struct net_device *dev)
	319	{
	320	unsigned short ioaddr = dev->base_addr;
	321	unsigned long end;
	322
	323	outb(0x04, ioaddr + ES_RESET_PORT);
	324	if (ei_debug > 1) printk("%s: resetting the ES3210...", dev->name);
	325
	326	end = jiffies + 2*HZ/100;
	327	while ((signed)(end - jiffies) > 0) continue;
	328
	329	ei_status.txing = 0;
	330	outb(0x01, ioaddr + ES_RESET_PORT);
	331	if (ei_debug > 1) printk("reset done\n");
	332
	333	return;
	334	}
	335
	336	/*
	337	* Note: In the following three functions is the implicit assumption
	338	* that the associated memcpy will only use "rep; movsl" as long as
	339	* we keep the counts as some multiple of doublewords. This is a
	340	* requirement of the hardware, and also prevents us from using
	341	* eth_io_copy_and_sum() since we can't guarantee it will limit
	342	* itself to doubleword access.
	343	*/
	344
	345	/*
	346	* Grab the 8390 specific header. Similar to the block_input routine, but
	347	* we don't need to be concerned with ring wrap as the header will be at
	348	* the start of a page, so we optimize accordingly. (A single doubleword.)
	349	*/
	350
	351	static void
	352	es_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	353	{
	354	void __iomem *hdr_start = ei_status.mem + ((ring_page - ES_START_PG)<<8);
	355	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	356	hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
	357	}
	358
	359	/*
	360	* Block input and output are easy on shared memory ethercards, the only
	361	* complication is when the ring buffer wraps. The count will already
	362	* be rounded up to a doubleword value via es_get_8390_hdr() above.
	363	*/
	364
	365	static void es_block_input(struct net_device dev, int count, struct sk_buff skb,
	366	int ring_offset)
	367	{
	368	void __iomem xfer_start = ei_status.mem + ring_offset - ES_START_PG256;
369
370	if (ring_offset + count > ES_STOP_PG*256) {
371	/* Packet wraps over end of ring buffer. */
372	int semi_count = ES_STOP_PG*256 - ring_offset;
373	memcpy_fromio(skb->data, xfer_start, semi_count);
374	count -= semi_count;
375	memcpy_fromio(skb->data + semi_count, ei_status.mem, count);
376	} else {
377	/* Packet is in one chunk. */
378	eth_io_copy_and_sum(skb, xfer_start, count, 0);
379	}
380	}
381
382	static void es_block_output(struct net_device *dev, int count,
383	const unsigned char *buf, int start_page)
384	{
385	void __iomem *shmem = ei_status.mem + ((start_page - ES_START_PG)<<8);
386
387	count = (count + 3) & ~3; /* Round up to doubleword */
388	memcpy_toio(shmem, buf, count);
389	}
390
391	static int es_open(struct net_device *dev)
392	{
393	ei_open(dev);
394	return 0;
395	}
396
397	static int es_close(struct net_device *dev)
398	{
399
400	if (ei_debug > 1)
401	printk("%s: Shutting down ethercard.\n", dev->name);
402
403	ei_close(dev);
404	return 0;
405	}
406
407	#ifdef MODULE
408	#define MAX_ES_CARDS 4 /* Max number of ES3210 cards per module */
409	#define NAMELEN 8 /* # of chars for storing dev->name */
410	static struct net_device *dev_es3210[MAX_ES_CARDS];
411	static int io[MAX_ES_CARDS];
412	static int irq[MAX_ES_CARDS];
413	static int mem[MAX_ES_CARDS];
414
415	module_param_array(io, int, NULL, 0);
416	module_param_array(irq, int, NULL, 0);
417	module_param_array(mem, int, NULL, 0);
418	MODULE_PARM_DESC(io, "I/O base address(es)");
419	MODULE_PARM_DESC(irq, "IRQ number(s)");
420	MODULE_PARM_DESC(mem, "memory base address(es)");
421	MODULE_DESCRIPTION("Racal-Interlan ES3210 EISA ethernet driver");
422	MODULE_LICENSE("GPL");
423
424	int
425	init_module(void)
426	{
427	struct net_device *dev;
428	int this_dev, found = 0;
429
430	for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
431	if (io[this_dev] == 0 && this_dev != 0)
432	break;
433	dev = alloc_ei_netdev();
434	if (!dev)
435	break;
436	dev->irq = irq[this_dev];
437	dev->base_addr = io[this_dev];
438	dev->mem_start = mem[this_dev];
439	if (do_es_probe(dev) == 0) {
b1fc5505 HX	440	dev_es3210[found++] = dev;
b1fc5505 HX	441	continue;
1da177e4 LT	442	}
	443	free_netdev(dev);
	444	printk(KERN_WARNING "es3210.c: No es3210 card found (i/o = 0x%x).\n", io[this_dev]);
	445	break;
	446	}
	447	if (found)
	448	return 0;
	449	return -ENXIO;
	450	}
	451
64916f1e DV	452	static void cleanup_card(struct net_device *dev)
	453	{
	454	free_irq(dev->irq, dev);
	455	release_region(dev->base_addr, ES_IO_EXTENT);
	456	iounmap(ei_status.mem);
	457	}
	458
1da177e4 LT	459	void
	460	cleanup_module(void)
	461	{
	462	int this_dev;
	463
	464	for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
	465	struct net_device *dev = dev_es3210[this_dev];
	466	if (dev) {
	467	unregister_netdev(dev);
	468	cleanup_card(dev);
	469	free_netdev(dev);
	470	}
	471	}
	472	}
	473	#endif /* MODULE */
	474