[mirror_ubuntu-bionic-kernel.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;
}

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);
}

#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;
}

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
158	static void cleanup_card(struct net_device *dev)
159	{
160	free_irq(dev->irq, dev);
161	release_region(dev->base_addr, ES_IO_EXTENT);
162	iounmap(ei_status.mem);
163	}
164
165	#ifndef MODULE
166	struct net_device * __init es_probe(int unit)
167	{
168	struct net_device *dev = alloc_ei_netdev();
169	int err;
170
171	if (!dev)
172	return ERR_PTR(-ENOMEM);
173
174	sprintf(dev->name, "eth%d", unit);
175	netdev_boot_setup_check(dev);
176
177	err = do_es_probe(dev);
178	if (err)
179	goto out;
1da177e4	180	return dev;
1da177e4 LT	181	out:
	182	free_netdev(dev);
	183	return ERR_PTR(err);
	184	}
	185	#endif
	186
	187	static int __init es_probe1(struct net_device *dev, int ioaddr)
	188	{
	189	int i, retval;
	190	unsigned long eisa_id;
	191
	192	if (!request_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT, "es3210"))
	193	return -ENODEV;
	194
	195	#if ES_DEBUG & ES_D_PROBE
	196	printk("es3210.c: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + ES_ID_PORT));
	197	printk("es3210.c: config regs: %#x %#x %#x %#x %#x %#x\n",
	198	inb(ioaddr + ES_CFG1), inb(ioaddr + ES_CFG2), inb(ioaddr + ES_CFG3),
	199	inb(ioaddr + ES_CFG4), inb(ioaddr + ES_CFG5), inb(ioaddr + ES_CFG6));
	200	#endif
	201
	202
	203	/* Check the EISA ID of the card. */
	204	eisa_id = inl(ioaddr + ES_ID_PORT);
	205	if ((eisa_id != ES_EISA_ID1) && (eisa_id != ES_EISA_ID2)) {
	206	retval = -ENODEV;
	207	goto out;
	208	}
	209
	210	/* Check the Racal vendor ID as well. */
	211	if (inb(ioaddr + ES_SA_PROM + 0) != ES_ADDR0
	212	\|\| inb(ioaddr + ES_SA_PROM + 1) != ES_ADDR1
	213	\|\| inb(ioaddr + ES_SA_PROM + 2) != ES_ADDR2 ) {
	214	printk("es3210.c: card not found");
	215	for(i = 0; i < ETHER_ADDR_LEN; i++)
	216	printk(" %02x", inb(ioaddr + ES_SA_PROM + i));
	217	printk(" (invalid prefix).\n");
	218	retval = -ENODEV;
	219	goto out;
	220	}
	221
	222	printk("es3210.c: ES3210 rev. %ld at %#x, node", eisa_id>>24, ioaddr);
	223	for(i = 0; i < ETHER_ADDR_LEN; i++)
	224	printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + ES_SA_PROM + i)));
	225
	226	/* Snarf the interrupt now. */
	227	if (dev->irq == 0) {
	228	unsigned char hi_irq = inb(ioaddr + ES_CFG2) & 0x07;
	229	unsigned char lo_irq = inb(ioaddr + ES_CFG1) & 0xfe;
	230
	231	if (hi_irq != 0) {
	232	dev->irq = hi_irq_map[hi_irq - 1];
	233	} else {
	234	int i = 0;
	235	while (lo_irq > (1<<i)) i++;
	236	dev->irq = lo_irq_map[i];
	237	}
	238	printk(" using IRQ %d", dev->irq);
	239	#if ES_DEBUG & ES_D_PROBE
	240	printk("es3210.c: hi_irq %#x, lo_irq %#x, dev->irq = %d\n",
	241	hi_irq, lo_irq, dev->irq);
	242	#endif
	243	} else {
	244	if (dev->irq == 2)
245	dev->irq = 9; /* Doh! */
246	printk(" assigning IRQ %d", dev->irq);
247	}
248
249	if (request_irq(dev->irq, ei_interrupt, 0, "es3210", dev)) {
250	printk (" unable to get IRQ %d.\n", dev->irq);
251	retval = -EAGAIN;
252	goto out;
253	}
254
255	if (dev->mem_start == 0) {
256	unsigned char mem_enabled = inb(ioaddr + ES_CFG2) & 0xc0;
257	unsigned char mem_bits = inb(ioaddr + ES_CFG3) & 0x07;
258
259	if (mem_enabled != 0x80) {
260	printk(" shared mem disabled - giving up\n");
261	retval = -ENXIO;
262	goto out1;
263	}
264	dev->mem_start = 0xC0000 + mem_bits*0x4000;
265	printk(" using ");
266	} else {
267	printk(" assigning ");
268	}
269
270	ei_status.mem = ioremap(dev->mem_start, (ES_STOP_PG - ES_START_PG)*256);
271	if (!ei_status.mem) {
272	printk("ioremap failed - giving up\n");
273	retval = -ENXIO;
274	goto out1;
275	}
276
277	dev->mem_end = dev->mem_start + (ES_STOP_PG - ES_START_PG)*256;
278
279	printk("mem %#lx-%#lx\n", dev->mem_start, dev->mem_end-1);
280
281	#if ES_DEBUG & ES_D_PROBE
282	if (inb(ioaddr + ES_CFG5))
283	printk("es3210: Warning - DMA channel enabled, but not used here.\n");
284	#endif
285	/* Note, point at the 8390, and not the card... */
286	dev->base_addr = ioaddr + ES_NIC_OFFSET;
287
288	ei_status.name = "ES3210";
289	ei_status.tx_start_page = ES_START_PG;
290	ei_status.rx_start_page = ES_START_PG + TX_PAGES;
291	ei_status.stop_page = ES_STOP_PG;
292	ei_status.word16 = 1;
293
294	if (ei_debug > 0)
295	printk(version);
296
297	ei_status.reset_8390 = &es_reset_8390;
298	ei_status.block_input = &es_block_input;
299	ei_status.block_output = &es_block_output;
300	ei_status.get_8390_hdr = &es_get_8390_hdr;
301
302	dev->open = &es_open;
303	dev->stop = &es_close;
304	#ifdef CONFIG_NET_POLL_CONTROLLER
305	dev->poll_controller = ei_poll;
306	#endif
307	NS8390_init(dev, 0);
b1fc5505 HX	308
	309	retval = register_netdev(dev);
	310	if (retval)
	311	goto out1;
1da177e4 LT	312	return 0;
	313	out1:
	314	free_irq(dev->irq, dev);
	315	out:
	316	release_region(ioaddr + ES_SA_PROM, ES_IO_EXTENT);
	317	return retval;
	318	}
	319
	320	/*
	321	* Reset as per the packet driver method. Judging by the EISA cfg
	322	* file, this just toggles the "Board Enable" bits (bit 2 and 0).
	323	*/
	324
	325	static void es_reset_8390(struct net_device *dev)
	326	{
	327	unsigned short ioaddr = dev->base_addr;
	328	unsigned long end;
	329
	330	outb(0x04, ioaddr + ES_RESET_PORT);
	331	if (ei_debug > 1) printk("%s: resetting the ES3210...", dev->name);
	332
	333	end = jiffies + 2*HZ/100;
	334	while ((signed)(end - jiffies) > 0) continue;
	335
	336	ei_status.txing = 0;
	337	outb(0x01, ioaddr + ES_RESET_PORT);
	338	if (ei_debug > 1) printk("reset done\n");
	339
	340	return;
	341	}
	342
	343	/*
	344	* Note: In the following three functions is the implicit assumption
	345	* that the associated memcpy will only use "rep; movsl" as long as
	346	* we keep the counts as some multiple of doublewords. This is a
	347	* requirement of the hardware, and also prevents us from using
	348	* eth_io_copy_and_sum() since we can't guarantee it will limit
	349	* itself to doubleword access.
	350	*/
	351
	352	/*
	353	* Grab the 8390 specific header. Similar to the block_input routine, but
	354	* we don't need to be concerned with ring wrap as the header will be at
	355	* the start of a page, so we optimize accordingly. (A single doubleword.)
	356	*/
	357
	358	static void
	359	es_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	360	{
	361	void __iomem *hdr_start = ei_status.mem + ((ring_page - ES_START_PG)<<8);
	362	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	363	hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
	364	}
	365
	366	/*
	367	* Block input and output are easy on shared memory ethercards, the only
	368	* complication is when the ring buffer wraps. The count will already
	369	* be rounded up to a doubleword value via es_get_8390_hdr() above.
	370	*/
	371
	372	static void es_block_input(struct net_device dev, int count, struct sk_buff skb,
	373	int ring_offset)
	374	{
	375	void __iomem xfer_start = ei_status.mem + ring_offset - ES_START_PG256;
376
377	if (ring_offset + count > ES_STOP_PG*256) {
378	/* Packet wraps over end of ring buffer. */
379	int semi_count = ES_STOP_PG*256 - ring_offset;
380	memcpy_fromio(skb->data, xfer_start, semi_count);
381	count -= semi_count;
382	memcpy_fromio(skb->data + semi_count, ei_status.mem, count);
383	} else {
384	/* Packet is in one chunk. */
385	eth_io_copy_and_sum(skb, xfer_start, count, 0);
386	}
387	}
388
389	static void es_block_output(struct net_device *dev, int count,
390	const unsigned char *buf, int start_page)
391	{
392	void __iomem *shmem = ei_status.mem + ((start_page - ES_START_PG)<<8);
393
394	count = (count + 3) & ~3; /* Round up to doubleword */
395	memcpy_toio(shmem, buf, count);
396	}
397
398	static int es_open(struct net_device *dev)
399	{
400	ei_open(dev);
401	return 0;
402	}
403
404	static int es_close(struct net_device *dev)
405	{
406
407	if (ei_debug > 1)
408	printk("%s: Shutting down ethercard.\n", dev->name);
409
410	ei_close(dev);
411	return 0;
412	}
413
414	#ifdef MODULE
415	#define MAX_ES_CARDS 4 /* Max number of ES3210 cards per module */
416	#define NAMELEN 8 /* # of chars for storing dev->name */
417	static struct net_device *dev_es3210[MAX_ES_CARDS];
418	static int io[MAX_ES_CARDS];
419	static int irq[MAX_ES_CARDS];
420	static int mem[MAX_ES_CARDS];
421
422	module_param_array(io, int, NULL, 0);
423	module_param_array(irq, int, NULL, 0);
424	module_param_array(mem, int, NULL, 0);
425	MODULE_PARM_DESC(io, "I/O base address(es)");
426	MODULE_PARM_DESC(irq, "IRQ number(s)");
427	MODULE_PARM_DESC(mem, "memory base address(es)");
428	MODULE_DESCRIPTION("Racal-Interlan ES3210 EISA ethernet driver");
429	MODULE_LICENSE("GPL");
430
431	int
432	init_module(void)
433	{
434	struct net_device *dev;
435	int this_dev, found = 0;
436
437	for (this_dev = 0; this_dev < MAX_ES_CARDS; this_dev++) {
438	if (io[this_dev] == 0 && this_dev != 0)
439	break;
440	dev = alloc_ei_netdev();
441	if (!dev)
442	break;
443	dev->irq = irq[this_dev];
444	dev->base_addr = io[this_dev];
445	dev->mem_start = mem[this_dev];
446	if (do_es_probe(dev) == 0) {
b1fc5505 HX	447	dev_es3210[found++] = dev;
b1fc5505 HX	448	continue;
1da177e4 LT	449	}
	450	free_netdev(dev);
	451	printk(KERN_WARNING "es3210.c: No es3210 card found (i/o = 0x%x).\n", io[this_dev]);
	452	break;
	453	}
	454	if (found)
	455	return 0;
	456	return -ENXIO;
	457	}
	458
	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