[linux.git] / drivers / net / lne390.c

/*
	lne390.c

	Linux driver for Mylex LNE390 EISA Network Adapter

	Copyright (C) 1996-1998, 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) Based upon framework of es3210 driver.
	2) The existing myriad of other Linux 8390 drivers by Donald Becker.
	3) Russ Nelson's asm packet driver provided additional info.
	4) Info for getting IRQ and sh-mem gleaned from the EISA cfg files.

	The LNE390 is an EISA shared memory NS8390 implementation. Note
	that all memory copies to/from the board must be 32bit transfers.
	There are two versions of the card: the lne390a and the lne390b.
	Going by the EISA cfg files, the "a" has jumpers to select between
	BNC/AUI, but the "b" also has RJ-45 and selection is via the SCU.
	The shared memory address selection is also slightly different.
	Note that shared memory address > 1MB are supported with this driver.

	You can try <http://www.mylex.com> if you want more info, as I've
	never even seen one of these cards.  :)

	Arnaldo Carvalho de Melo <[email protected]> - 2000/09/01
	- get rid of check_region
	- no need to check if dev == NULL in lne390_probe1
*/

static const char *version =
	"lne390.c: Driver revision v0.99.1, 01/09/2000\n";

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

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

#include "8390.h"

#define DRV_NAME "lne390"

static int lne390_probe1(struct net_device *dev, int ioaddr);

static int lne390_open(struct net_device *dev);
static int lne390_close(struct net_device *dev);

static void lne390_reset_8390(struct net_device *dev);

static void lne390_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page);
static void lne390_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset);
static void lne390_block_output(struct net_device *dev, int count, const unsigned char *buf, const int start_page);

#define LNE390_START_PG		0x00    /* First page of TX buffer	*/
#define LNE390_STOP_PG		0x80    /* Last page +1 of RX ring	*/

#define LNE390_ID_PORT		0xc80	/* Same for all EISA cards 	*/
#define LNE390_IO_EXTENT	0x20
#define LNE390_SA_PROM		0x16	/* Start of e'net addr.		*/
#define LNE390_RESET_PORT	0xc84	/* From the pkt driver source	*/
#define LNE390_NIC_OFFSET	0x00	/* Hello, the 8390 is *here*	*/

#define LNE390_ADDR0		0x00	/* 3 byte vendor prefix		*/
#define LNE390_ADDR1		0x80
#define LNE390_ADDR2		0xe5

#define LNE390_ID0	0x10009835	/* 0x3598 = 01101 01100 11000 = mlx */
#define LNE390_ID1	0x11009835	/* above is the 390A, this is 390B  */

#define LNE390_CFG1		0xc84	/* NB: 0xc84 is also "reset" port. */
#define LNE390_CFG2		0xc90

/*
 *	You can OR any of the following bits together and assign it
 *	to LNE390_DEBUG to get verbose driver info during operation.
 *	Currently only the probe one is implemented.
 */

#define LNE390_D_PROBE	0x01
#define LNE390_D_RX_PKT	0x02
#define LNE390_D_TX_PKT	0x04
#define LNE390_D_IRQ	0x08

#define LNE390_DEBUG	0

static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
static unsigned int shmem_mapA[] __initdata = {0xff, 0xfe, 0xfd, 0xfff, 0xffe, 0xffc, 0x0d, 0x0};
static unsigned int shmem_mapB[] __initdata = {0xff, 0xfe, 0x0e, 0xfff, 0xffe, 0xffc, 0x0d, 0x0};

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

static int __init do_lne390_probe(struct net_device *dev)
{
	unsigned short ioaddr = dev->base_addr;
	int irq = dev->irq;
	int mem_start = dev->mem_start;
	int ret;

	SET_MODULE_OWNER(dev);

	if (ioaddr > 0x1ff) {		/* Check a single specified location. */
		if (!request_region(ioaddr, LNE390_IO_EXTENT, DRV_NAME))
			return -EBUSY;
		ret = lne390_probe1(dev, ioaddr);
		if (ret)
			release_region(ioaddr, LNE390_IO_EXTENT);
		return ret;
	}
	else if (ioaddr > 0)		/* Don't probe at all. */
		return -ENXIO;

	if (!EISA_bus) {
#if LNE390_DEBUG & LNE390_D_PROBE
		printk("lne390-debug: Not an 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 (!request_region(ioaddr, LNE390_IO_EXTENT, DRV_NAME))
			continue;
		if (lne390_probe1(dev, ioaddr) == 0)
			return 0;
		release_region(ioaddr, LNE390_IO_EXTENT);
		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, LNE390_IO_EXTENT);
	iounmap(ei_status.mem);
}

#ifndef MODULE
struct net_device * __init lne390_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_lne390_probe(dev);
	if (err)
		goto out;
	return dev;
out:
	free_netdev(dev);
	return ERR_PTR(err);
}
#endif

static int __init lne390_probe1(struct net_device *dev, int ioaddr)
{
	int i, revision, ret;
	unsigned long eisa_id;

	if (inb_p(ioaddr + LNE390_ID_PORT) == 0xff) return -ENODEV;

#if LNE390_DEBUG & LNE390_D_PROBE
	printk("lne390-debug: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + LNE390_ID_PORT));
	printk("lne390-debug: config regs: %#x %#x\n",
		inb(ioaddr + LNE390_CFG1), inb(ioaddr + LNE390_CFG2));
#endif


/*	Check the EISA ID of the card. */
	eisa_id = inl(ioaddr + LNE390_ID_PORT);
	if ((eisa_id != LNE390_ID0) && (eisa_id != LNE390_ID1)) {
		return -ENODEV;
	}

	revision = (eisa_id >> 24) & 0x01;	/* 0 = rev A, 1 rev B */
	
#if 0
/*	Check the Mylex vendor ID as well. Not really required. */
	if (inb(ioaddr + LNE390_SA_PROM + 0) != LNE390_ADDR0
		|| inb(ioaddr + LNE390_SA_PROM + 1) != LNE390_ADDR1
		|| inb(ioaddr + LNE390_SA_PROM + 2) != LNE390_ADDR2 ) {
		printk("lne390.c: card not found");
		for(i = 0; i < ETHER_ADDR_LEN; i++)
			printk(" %02x", inb(ioaddr + LNE390_SA_PROM + i));
		printk(" (invalid prefix).\n");
		return -ENODEV;
	}
#endif

	printk("lne390.c: LNE390%X in EISA slot %d, address", 0xa+revision, ioaddr/0x1000);
	for(i = 0; i < ETHER_ADDR_LEN; i++)
		printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + LNE390_SA_PROM + i)));
	printk(".\nlne390.c: ");

	/* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
	if (dev->irq == 0) {
		unsigned char irq_reg = inb(ioaddr + LNE390_CFG2) >> 3;
		dev->irq = irq_map[irq_reg & 0x07];
		printk("using");
	} else {
		/* This is useless unless we reprogram the card here too */
		if (dev->irq == 2) dev->irq = 9;	/* Doh! */
		printk("assigning");
	}
	printk(" IRQ %d,", dev->irq);

	if ((ret = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev))) {
		printk (" unable to get IRQ %d.\n", dev->irq);
		return ret;
	}

	if (dev->mem_start == 0) {
		unsigned char mem_reg = inb(ioaddr + LNE390_CFG2) & 0x07;

		if (revision)	/* LNE390B */
			dev->mem_start = shmem_mapB[mem_reg] * 0x10000;
		else		/* LNE390A */
			dev->mem_start = shmem_mapA[mem_reg] * 0x10000;
		printk(" using ");
	} else {
		/* Should check for value in shmem_map and reprogram the card to use it */
		dev->mem_start &= 0xfff0000;
		printk(" assigning ");
	}

	printk("%dkB memory at physical address %#lx\n",
			LNE390_STOP_PG/4, dev->mem_start);

	/*
	   BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
	   the card mem within the region covered by `normal' RAM  !!!

	   ioremap() will fail in that case.
	*/
	ei_status.mem = ioremap(dev->mem_start, LNE390_STOP_PG*0x100);
	if (!ei_status.mem) {
		printk(KERN_ERR "lne390.c: Unable to remap card memory above 1MB !!\n");
		printk(KERN_ERR "lne390.c: Try using EISA SCU to set memory below 1MB.\n");
		printk(KERN_ERR "lne390.c: Driver NOT installed.\n");
		ret = -EAGAIN;
		goto cleanup;
	}
	printk("lne390.c: remapped %dkB card memory to virtual address %p\n",
			LNE390_STOP_PG/4, ei_status.mem);

	dev->mem_start = (unsigned long)ei_status.mem;
	dev->mem_end = dev->mem_start + (LNE390_STOP_PG - LNE390_START_PG)*256;

	/* The 8390 offset is zero for the LNE390 */
	dev->base_addr = ioaddr;

	ei_status.name = "LNE390";
	ei_status.tx_start_page = LNE390_START_PG;
	ei_status.rx_start_page = LNE390_START_PG + TX_PAGES;
	ei_status.stop_page = LNE390_STOP_PG;
	ei_status.word16 = 1;

	if (ei_debug > 0)
		printk(version);

	ei_status.reset_8390 = &lne390_reset_8390;
	ei_status.block_input = &lne390_block_input;
	ei_status.block_output = &lne390_block_output;
	ei_status.get_8390_hdr = &lne390_get_8390_hdr;

	dev->open = &lne390_open;
	dev->stop = &lne390_close;
#ifdef CONFIG_NET_POLL_CONTROLLER
	dev->poll_controller = ei_poll;
#endif
	NS8390_init(dev, 0);

	ret = register_netdev(dev);
	if (ret)
		goto unmap;
	return 0;
unmap:
	if (ei_status.reg0)
		iounmap(ei_status.mem);
cleanup:
	free_irq(dev->irq, dev);
	return ret;
}

/*
 *	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 lne390_reset_8390(struct net_device *dev)
{
	unsigned short ioaddr = dev->base_addr;

	outb(0x04, ioaddr + LNE390_RESET_PORT);
	if (ei_debug > 1) printk("%s: resetting the LNE390...", dev->name);

	mdelay(2);

	ei_status.txing = 0;
	outb(0x01, ioaddr + LNE390_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
lne390_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
	void __iomem *hdr_start = ei_status.mem + ((ring_page - LNE390_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 lne390_get_8390_hdr() above.
 */

static void lne390_block_input(struct net_device *dev, int count, struct sk_buff *skb,
						  int ring_offset)
{
	void __iomem *xfer_start = ei_status.mem + ring_offset - (LNE390_START_PG<<8);

	if (ring_offset + count > (LNE390_STOP_PG<<8)) {
		/* Packet wraps over end of ring buffer. */
		int semi_count = (LNE390_STOP_PG<<8) - ring_offset;
		memcpy_fromio(skb->data, xfer_start, semi_count);
		count -= semi_count;
		memcpy_fromio(skb->data + semi_count,
			ei_status.mem + (TX_PAGES<<8), count);
	} else {
		/* Packet is in one chunk. */
		memcpy_fromio(skb->data, xfer_start, count);
	}
}

static void lne390_block_output(struct net_device *dev, int count,
				const unsigned char *buf, int start_page)
{
	void __iomem *shmem = ei_status.mem + ((start_page - LNE390_START_PG)<<8);

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

static int lne390_open(struct net_device *dev)
{
	ei_open(dev);
	return 0;
}

static int lne390_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_LNE_CARDS	4	/* Max number of LNE390 cards per module */
static struct net_device *dev_lne[MAX_LNE_CARDS];
static int io[MAX_LNE_CARDS];
static int irq[MAX_LNE_CARDS];
static int mem[MAX_LNE_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("Mylex LNE390A/B 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_LNE_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_lne390_probe(dev) == 0) {
			dev_lne[found++] = dev;
			continue;
		}
		free_netdev(dev);
		printk(KERN_WARNING "lne390.c: No LNE390 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_LNE_CARDS; this_dev++) {
		struct net_device *dev = dev_lne[this_dev];
		if (dev) {
			unregister_netdev(dev);
			cleanup_card(dev);
			free_netdev(dev);
		}
	}
}
#endif /* MODULE */
Commit	Line	Data
1da177e4 LT	1	/*
	2	lne390.c
	3
	4	Linux driver for Mylex LNE390 EISA Network Adapter
	5
	6	Copyright (C) 1996-1998, 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) Based upon framework of es3210 driver.
	14	2) The existing myriad of other Linux 8390 drivers by Donald Becker.
	15	3) Russ Nelson's asm packet driver provided additional info.
	16	4) Info for getting IRQ and sh-mem gleaned from the EISA cfg files.
	17
	18	The LNE390 is an EISA shared memory NS8390 implementation. Note
	19	that all memory copies to/from the board must be 32bit transfers.
	20	There are two versions of the card: the lne390a and the lne390b.
	21	Going by the EISA cfg files, the "a" has jumpers to select between
	22	BNC/AUI, but the "b" also has RJ-45 and selection is via the SCU.
	23	The shared memory address selection is also slightly different.
	24	Note that shared memory address > 1MB are supported with this driver.
	25
	26	You can try <http://www.mylex.com> if you want more info, as I've
	27	never even seen one of these cards. :)
	28
	29	Arnaldo Carvalho de Melo <[email protected]> - 2000/09/01
	30	- get rid of check_region
	31	- no need to check if dev == NULL in lne390_probe1
	32	*/
	33
	34	static const char *version =
	35	"lne390.c: Driver revision v0.99.1, 01/09/2000\n";
	36
	37	#include <linux/module.h>
	38	#include <linux/eisa.h>
	39	#include <linux/kernel.h>
	40	#include <linux/errno.h>
	41	#include <linux/string.h>
	42	#include <linux/delay.h>
	43	#include <linux/init.h>
	44	#include <linux/netdevice.h>
	45	#include <linux/etherdevice.h>
	46
	47	#include <asm/io.h>
	48	#include <asm/system.h>
	49
	50	#include "8390.h"
	51
	52	#define DRV_NAME "lne390"
	53
	54	static int lne390_probe1(struct net_device *dev, int ioaddr);
	55
	56	static int lne390_open(struct net_device *dev);
	57	static int lne390_close(struct net_device *dev);
	58
	59	static void lne390_reset_8390(struct net_device *dev);
	60
	61	static void lne390_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page);
	62	static void lne390_block_input(struct net_device dev, int count, struct sk_buff skb, int ring_offset);
	63	static void lne390_block_output(struct net_device dev, int count, const unsigned char buf, const int start_page);
	64
65	#define LNE390_START_PG 0x00 /* First page of TX buffer */
66	#define LNE390_STOP_PG 0x80 /* Last page +1 of RX ring */
67
68	#define LNE390_ID_PORT 0xc80 /* Same for all EISA cards */
69	#define LNE390_IO_EXTENT 0x20
70	#define LNE390_SA_PROM 0x16 /* Start of e'net addr. */
71	#define LNE390_RESET_PORT 0xc84 /* From the pkt driver source */
72	#define LNE390_NIC_OFFSET 0x00 /* Hello, the 8390 is here */
73
74	#define LNE390_ADDR0 0x00 /* 3 byte vendor prefix */
75	#define LNE390_ADDR1 0x80
76	#define LNE390_ADDR2 0xe5
77
78	#define LNE390_ID0 0x10009835 /* 0x3598 = 01101 01100 11000 = mlx */
79	#define LNE390_ID1 0x11009835 /* above is the 390A, this is 390B */
80
81	#define LNE390_CFG1 0xc84 /* NB: 0xc84 is also "reset" port. */
82	#define LNE390_CFG2 0xc90
83
84	/*
85	* You can OR any of the following bits together and assign it
86	* to LNE390_DEBUG to get verbose driver info during operation.
87	* Currently only the probe one is implemented.
88	*/
89
90	#define LNE390_D_PROBE 0x01
91	#define LNE390_D_RX_PKT 0x02
92	#define LNE390_D_TX_PKT 0x04
93	#define LNE390_D_IRQ 0x08
94
95	#define LNE390_DEBUG 0
96
97	static unsigned char irq_map[] __initdata = {15, 12, 11, 10, 9, 7, 5, 3};
98	static unsigned int shmem_mapA[] __initdata = {0xff, 0xfe, 0xfd, 0xfff, 0xffe, 0xffc, 0x0d, 0x0};
99	static unsigned int shmem_mapB[] __initdata = {0xff, 0xfe, 0x0e, 0xfff, 0xffe, 0xffc, 0x0d, 0x0};
100
101	/*
102	* Probe for the card. The best way is to read the EISA ID if it
103	* is known. Then we can check the prefix of the station address
104	* PROM for a match against the value assigned to Mylex.
105	*/
106
107	static int __init do_lne390_probe(struct net_device *dev)
108	{
109	unsigned short ioaddr = dev->base_addr;
110	int irq = dev->irq;
111	int mem_start = dev->mem_start;
112	int ret;
113
114	SET_MODULE_OWNER(dev);
115
116	if (ioaddr > 0x1ff) { /* Check a single specified location. */
117	if (!request_region(ioaddr, LNE390_IO_EXTENT, DRV_NAME))
118	return -EBUSY;
119	ret = lne390_probe1(dev, ioaddr);
120	if (ret)
121	release_region(ioaddr, LNE390_IO_EXTENT);
122	return ret;
123	}
124	else if (ioaddr > 0) /* Don't probe at all. */
125	return -ENXIO;
126
127	if (!EISA_bus) {
128	#if LNE390_DEBUG & LNE390_D_PROBE
129	printk("lne390-debug: Not an EISA bus. Not probing high ports.\n");
130	#endif
131	return -ENXIO;
132	}
133
134	/* EISA spec allows for up to 16 slots, but 8 is typical. */
135	for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
136	if (!request_region(ioaddr, LNE390_IO_EXTENT, DRV_NAME))
137	continue;
138	if (lne390_probe1(dev, ioaddr) == 0)
139	return 0;
140	release_region(ioaddr, LNE390_IO_EXTENT);
141	dev->irq = irq;
142	dev->mem_start = mem_start;
143	}
144
145	return -ENODEV;
146	}
147
148	static void cleanup_card(struct net_device *dev)
149	{
150	free_irq(dev->irq, dev);
151	release_region(dev->base_addr, LNE390_IO_EXTENT);
152	iounmap(ei_status.mem);
153	}
154
155	#ifndef MODULE
156	struct net_device * __init lne390_probe(int unit)
157	{
158	struct net_device *dev = alloc_ei_netdev();
159	int err;
160
161	if (!dev)
162	return ERR_PTR(-ENOMEM);
163
164	sprintf(dev->name, "eth%d", unit);
165	netdev_boot_setup_check(dev);
166
167	err = do_lne390_probe(dev);
168	if (err)
169	goto out;
1da177e4	170	return dev;
1da177e4 LT	171	out:
	172	free_netdev(dev);
	173	return ERR_PTR(err);
	174	}
	175	#endif
	176
	177	static int __init lne390_probe1(struct net_device *dev, int ioaddr)
	178	{
	179	int i, revision, ret;
	180	unsigned long eisa_id;
	181
	182	if (inb_p(ioaddr + LNE390_ID_PORT) == 0xff) return -ENODEV;
	183
	184	#if LNE390_DEBUG & LNE390_D_PROBE
	185	printk("lne390-debug: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + LNE390_ID_PORT));
	186	printk("lne390-debug: config regs: %#x %#x\n",
	187	inb(ioaddr + LNE390_CFG1), inb(ioaddr + LNE390_CFG2));
	188	#endif
	189
	190
	191	/* Check the EISA ID of the card. */
	192	eisa_id = inl(ioaddr + LNE390_ID_PORT);
	193	if ((eisa_id != LNE390_ID0) && (eisa_id != LNE390_ID1)) {
	194	return -ENODEV;
	195	}
	196
	197	revision = (eisa_id >> 24) & 0x01; /* 0 = rev A, 1 rev B */
	198
	199	#if 0
	200	/* Check the Mylex vendor ID as well. Not really required. */
	201	if (inb(ioaddr + LNE390_SA_PROM + 0) != LNE390_ADDR0
	202	\|\| inb(ioaddr + LNE390_SA_PROM + 1) != LNE390_ADDR1
	203	\|\| inb(ioaddr + LNE390_SA_PROM + 2) != LNE390_ADDR2 ) {
	204	printk("lne390.c: card not found");
	205	for(i = 0; i < ETHER_ADDR_LEN; i++)
	206	printk(" %02x", inb(ioaddr + LNE390_SA_PROM + i));
	207	printk(" (invalid prefix).\n");
	208	return -ENODEV;
	209	}
	210	#endif
	211
	212	printk("lne390.c: LNE390%X in EISA slot %d, address", 0xa+revision, ioaddr/0x1000);
	213	for(i = 0; i < ETHER_ADDR_LEN; i++)
	214	printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + LNE390_SA_PROM + i)));
	215	printk(".\nlne390.c: ");
	216
	217	/* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
	218	if (dev->irq == 0) {
	219	unsigned char irq_reg = inb(ioaddr + LNE390_CFG2) >> 3;
	220	dev->irq = irq_map[irq_reg & 0x07];
	221	printk("using");
	222	} else {
	223	/* This is useless unless we reprogram the card here too */
	224	if (dev->irq == 2) dev->irq = 9; /* Doh! */
	225	printk("assigning");
	226	}
	227	printk(" IRQ %d,", dev->irq);
	228
	229	if ((ret = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev))) {
	230	printk (" unable to get IRQ %d.\n", dev->irq);
	231	return ret;
	232	}
	233
	234	if (dev->mem_start == 0) {
235	unsigned char mem_reg = inb(ioaddr + LNE390_CFG2) & 0x07;
236
237	if (revision) /* LNE390B */
238	dev->mem_start = shmem_mapB[mem_reg] * 0x10000;
239	else /* LNE390A */
240	dev->mem_start = shmem_mapA[mem_reg] * 0x10000;
241	printk(" using ");
242	} else {
243	/* Should check for value in shmem_map and reprogram the card to use it */
244	dev->mem_start &= 0xfff0000;
245	printk(" assigning ");
246	}
247
248	printk("%dkB memory at physical address %#lx\n",
249	LNE390_STOP_PG/4, dev->mem_start);
250
251	/*
252	BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
253	the card mem within the region covered by `normal' RAM !!!
254
255	ioremap() will fail in that case.
256	*/
257	ei_status.mem = ioremap(dev->mem_start, LNE390_STOP_PG*0x100);
258	if (!ei_status.mem) {
259	printk(KERN_ERR "lne390.c: Unable to remap card memory above 1MB !!\n");
260	printk(KERN_ERR "lne390.c: Try using EISA SCU to set memory below 1MB.\n");
261	printk(KERN_ERR "lne390.c: Driver NOT installed.\n");
262	ret = -EAGAIN;
263	goto cleanup;
264	}
265	printk("lne390.c: remapped %dkB card memory to virtual address %p\n",
266	LNE390_STOP_PG/4, ei_status.mem);
267
268	dev->mem_start = (unsigned long)ei_status.mem;
269	dev->mem_end = dev->mem_start + (LNE390_STOP_PG - LNE390_START_PG)*256;
270
271	/* The 8390 offset is zero for the LNE390 */
272	dev->base_addr = ioaddr;
273
274	ei_status.name = "LNE390";
275	ei_status.tx_start_page = LNE390_START_PG;
276	ei_status.rx_start_page = LNE390_START_PG + TX_PAGES;
277	ei_status.stop_page = LNE390_STOP_PG;
278	ei_status.word16 = 1;
279
280	if (ei_debug > 0)
281	printk(version);
282
283	ei_status.reset_8390 = &lne390_reset_8390;
284	ei_status.block_input = &lne390_block_input;
285	ei_status.block_output = &lne390_block_output;
286	ei_status.get_8390_hdr = &lne390_get_8390_hdr;
287
288	dev->open = &lne390_open;
289	dev->stop = &lne390_close;
290	#ifdef CONFIG_NET_POLL_CONTROLLER
291	dev->poll_controller = ei_poll;
292	#endif
293	NS8390_init(dev, 0);
b1fc5505 HX	294
	295	ret = register_netdev(dev);
	296	if (ret)
	297	goto unmap;
1da177e4	298	return 0;
b1fc5505 HX	299	unmap:
b1fc5505 HX	300	if (ei_status.reg0)
387d890d	301	iounmap(ei_status.mem);
1da177e4 LT	302	cleanup:
	303	free_irq(dev->irq, dev);
	304	return ret;
	305	}
	306
	307	/*
	308	* Reset as per the packet driver method. Judging by the EISA cfg
	309	* file, this just toggles the "Board Enable" bits (bit 2 and 0).
	310	*/
	311
	312	static void lne390_reset_8390(struct net_device *dev)
	313	{
	314	unsigned short ioaddr = dev->base_addr;
	315
	316	outb(0x04, ioaddr + LNE390_RESET_PORT);
	317	if (ei_debug > 1) printk("%s: resetting the LNE390...", dev->name);
	318
	319	mdelay(2);
	320
	321	ei_status.txing = 0;
	322	outb(0x01, ioaddr + LNE390_RESET_PORT);
	323	if (ei_debug > 1) printk("reset done\n");
	324
	325	return;
	326	}
	327
	328	/*
	329	* Note: In the following three functions is the implicit assumption
	330	* that the associated memcpy will only use "rep; movsl" as long as
	331	* we keep the counts as some multiple of doublewords. This is a
	332	* requirement of the hardware, and also prevents us from using
	333	* eth_io_copy_and_sum() since we can't guarantee it will limit
	334	* itself to doubleword access.
	335	*/
	336
	337	/*
	338	* Grab the 8390 specific header. Similar to the block_input routine, but
	339	* we don't need to be concerned with ring wrap as the header will be at
	340	* the start of a page, so we optimize accordingly. (A single doubleword.)
	341	*/
	342
	343	static void
	344	lne390_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	345	{
	346	void __iomem *hdr_start = ei_status.mem + ((ring_page - LNE390_START_PG)<<8);
	347	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	348	hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
	349	}
	350
	351	/*
	352	* Block input and output are easy on shared memory ethercards, the only
	353	* complication is when the ring buffer wraps. The count will already
	354	* be rounded up to a doubleword value via lne390_get_8390_hdr() above.
	355	*/
	356
	357	static void lne390_block_input(struct net_device dev, int count, struct sk_buff skb,
	358	int ring_offset)
	359	{
	360	void __iomem *xfer_start = ei_status.mem + ring_offset - (LNE390_START_PG<<8);
	361
	362	if (ring_offset + count > (LNE390_STOP_PG<<8)) {
	363	/* Packet wraps over end of ring buffer. */
	364	int semi_count = (LNE390_STOP_PG<<8) - ring_offset;
	365	memcpy_fromio(skb->data, xfer_start, semi_count);
366	count -= semi_count;
367	memcpy_fromio(skb->data + semi_count,
368	ei_status.mem + (TX_PAGES<<8), count);
369	} else {
370	/* Packet is in one chunk. */
371	memcpy_fromio(skb->data, xfer_start, count);
372	}
373	}
374
375	static void lne390_block_output(struct net_device *dev, int count,
376	const unsigned char *buf, int start_page)
377	{
378	void __iomem *shmem = ei_status.mem + ((start_page - LNE390_START_PG)<<8);
379
380	count = (count + 3) & ~3; /* Round up to doubleword */
381	memcpy_toio(shmem, buf, count);
382	}
383
384	static int lne390_open(struct net_device *dev)
385	{
386	ei_open(dev);
387	return 0;
388	}
389
390	static int lne390_close(struct net_device *dev)
391	{
392
393	if (ei_debug > 1)
394	printk("%s: Shutting down ethercard.\n", dev->name);
395
396	ei_close(dev);
397	return 0;
398	}
399
400	#ifdef MODULE
401	#define MAX_LNE_CARDS 4 /* Max number of LNE390 cards per module */
402	static struct net_device *dev_lne[MAX_LNE_CARDS];
403	static int io[MAX_LNE_CARDS];
404	static int irq[MAX_LNE_CARDS];
405	static int mem[MAX_LNE_CARDS];
406
407	module_param_array(io, int, NULL, 0);
408	module_param_array(irq, int, NULL, 0);
409	module_param_array(mem, int, NULL, 0);
410	MODULE_PARM_DESC(io, "I/O base address(es)");
411	MODULE_PARM_DESC(irq, "IRQ number(s)");
412	MODULE_PARM_DESC(mem, "memory base address(es)");
413	MODULE_DESCRIPTION("Mylex LNE390A/B EISA Ethernet driver");
414	MODULE_LICENSE("GPL");
415
416	int init_module(void)
417	{
418	struct net_device *dev;
419	int this_dev, found = 0;
420
421	for (this_dev = 0; this_dev < MAX_LNE_CARDS; this_dev++) {
422	if (io[this_dev] == 0 && this_dev != 0)
423	break;
424	dev = alloc_ei_netdev();
425	if (!dev)
426	break;
427	dev->irq = irq[this_dev];
428	dev->base_addr = io[this_dev];
429	dev->mem_start = mem[this_dev];
430	if (do_lne390_probe(dev) == 0) {
b1fc5505 HX	431	dev_lne[found++] = dev;
b1fc5505 HX	432	continue;
1da177e4 LT	433	}
	434	free_netdev(dev);
	435	printk(KERN_WARNING "lne390.c: No LNE390 card found (i/o = 0x%x).\n", io[this_dev]);
	436	break;
	437	}
	438	if (found)
	439	return 0;
	440	return -ENXIO;
	441	}
	442
	443	void cleanup_module(void)
	444	{
	445	int this_dev;
	446
	447	for (this_dev = 0; this_dev < MAX_LNE_CARDS; this_dev++) {
	448	struct net_device *dev = dev_lne[this_dev];
	449	if (dev) {
	450	unregister_netdev(dev);
	451	cleanup_card(dev);
	452	free_netdev(dev);
	453	}
	454	}
	455	}
	456	#endif /* MODULE */
	457