[net-next-2.6.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 <acme@conectiva.com.br> - 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;
}

#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 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;
}

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);
}

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 <acme@conectiva.com.br> - 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
1da177e4 LT	148	#ifndef MODULE
	149	struct net_device * __init lne390_probe(int unit)
	150	{
	151	struct net_device *dev = alloc_ei_netdev();
	152	int err;
	153
	154	if (!dev)
	155	return ERR_PTR(-ENOMEM);
	156
	157	sprintf(dev->name, "eth%d", unit);
	158	netdev_boot_setup_check(dev);
	159
	160	err = do_lne390_probe(dev);
	161	if (err)
	162	goto out;
1da177e4	163	return dev;
1da177e4 LT	164	out:
	165	free_netdev(dev);
	166	return ERR_PTR(err);
	167	}
	168	#endif
	169
	170	static int __init lne390_probe1(struct net_device *dev, int ioaddr)
	171	{
	172	int i, revision, ret;
	173	unsigned long eisa_id;
	174
	175	if (inb_p(ioaddr + LNE390_ID_PORT) == 0xff) return -ENODEV;
	176
	177	#if LNE390_DEBUG & LNE390_D_PROBE
	178	printk("lne390-debug: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + LNE390_ID_PORT));
	179	printk("lne390-debug: config regs: %#x %#x\n",
	180	inb(ioaddr + LNE390_CFG1), inb(ioaddr + LNE390_CFG2));
	181	#endif
	182
	183
	184	/* Check the EISA ID of the card. */
	185	eisa_id = inl(ioaddr + LNE390_ID_PORT);
	186	if ((eisa_id != LNE390_ID0) && (eisa_id != LNE390_ID1)) {
	187	return -ENODEV;
	188	}
	189
	190	revision = (eisa_id >> 24) & 0x01; /* 0 = rev A, 1 rev B */
6aa20a22	191
1da177e4 LT	192	#if 0
	193	/* Check the Mylex vendor ID as well. Not really required. */
	194	if (inb(ioaddr + LNE390_SA_PROM + 0) != LNE390_ADDR0
	195	\|\| inb(ioaddr + LNE390_SA_PROM + 1) != LNE390_ADDR1
	196	\|\| inb(ioaddr + LNE390_SA_PROM + 2) != LNE390_ADDR2 ) {
	197	printk("lne390.c: card not found");
	198	for(i = 0; i < ETHER_ADDR_LEN; i++)
	199	printk(" %02x", inb(ioaddr + LNE390_SA_PROM + i));
	200	printk(" (invalid prefix).\n");
	201	return -ENODEV;
	202	}
	203	#endif
	204
	205	printk("lne390.c: LNE390%X in EISA slot %d, address", 0xa+revision, ioaddr/0x1000);
	206	for(i = 0; i < ETHER_ADDR_LEN; i++)
	207	printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + LNE390_SA_PROM + i)));
	208	printk(".\nlne390.c: ");
	209
	210	/* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
	211	if (dev->irq == 0) {
	212	unsigned char irq_reg = inb(ioaddr + LNE390_CFG2) >> 3;
	213	dev->irq = irq_map[irq_reg & 0x07];
	214	printk("using");
	215	} else {
	216	/* This is useless unless we reprogram the card here too */
	217	if (dev->irq == 2) dev->irq = 9; /* Doh! */
	218	printk("assigning");
	219	}
	220	printk(" IRQ %d,", dev->irq);
	221
	222	if ((ret = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev))) {
	223	printk (" unable to get IRQ %d.\n", dev->irq);
	224	return ret;
	225	}
	226
	227	if (dev->mem_start == 0) {
	228	unsigned char mem_reg = inb(ioaddr + LNE390_CFG2) & 0x07;
	229
	230	if (revision) /* LNE390B */
	231	dev->mem_start = shmem_mapB[mem_reg] * 0x10000;
	232	else /* LNE390A */
	233	dev->mem_start = shmem_mapA[mem_reg] * 0x10000;
	234	printk(" using ");
	235	} else {
	236	/* Should check for value in shmem_map and reprogram the card to use it */
	237	dev->mem_start &= 0xfff0000;
	238	printk(" assigning ");
	239	}
	240
	241	printk("%dkB memory at physical address %#lx\n",
	242	LNE390_STOP_PG/4, dev->mem_start);
	243
	244	/*
	245	BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
	246	the card mem within the region covered by `normal' RAM !!!
	247
	248	ioremap() will fail in that case.
	249	*/
	250	ei_status.mem = ioremap(dev->mem_start, LNE390_STOP_PG*0x100);
	251	if (!ei_status.mem) {
	252	printk(KERN_ERR "lne390.c: Unable to remap card memory above 1MB !!\n");
	253	printk(KERN_ERR "lne390.c: Try using EISA SCU to set memory below 1MB.\n");
	254	printk(KERN_ERR "lne390.c: Driver NOT installed.\n");
	255	ret = -EAGAIN;
256	goto cleanup;
257	}
258	printk("lne390.c: remapped %dkB card memory to virtual address %p\n",
259	LNE390_STOP_PG/4, ei_status.mem);
260
261	dev->mem_start = (unsigned long)ei_status.mem;
262	dev->mem_end = dev->mem_start + (LNE390_STOP_PG - LNE390_START_PG)*256;
263
264	/* The 8390 offset is zero for the LNE390 */
265	dev->base_addr = ioaddr;
266
267	ei_status.name = "LNE390";
268	ei_status.tx_start_page = LNE390_START_PG;
269	ei_status.rx_start_page = LNE390_START_PG + TX_PAGES;
270	ei_status.stop_page = LNE390_STOP_PG;
271	ei_status.word16 = 1;
272
273	if (ei_debug > 0)
274	printk(version);
275
276	ei_status.reset_8390 = &lne390_reset_8390;
277	ei_status.block_input = &lne390_block_input;
278	ei_status.block_output = &lne390_block_output;
279	ei_status.get_8390_hdr = &lne390_get_8390_hdr;
280
281	dev->open = &lne390_open;
282	dev->stop = &lne390_close;
283	#ifdef CONFIG_NET_POLL_CONTROLLER
284	dev->poll_controller = ei_poll;
285	#endif
286	NS8390_init(dev, 0);
b1fc5505 HX	287
	288	ret = register_netdev(dev);
	289	if (ret)
	290	goto unmap;
1da177e4	291	return 0;
b1fc5505 HX	292	unmap:
b1fc5505 HX	293	if (ei_status.reg0)
387d890d	294	iounmap(ei_status.mem);
1da177e4 LT	295	cleanup:
	296	free_irq(dev->irq, dev);
	297	return ret;
	298	}
	299
	300	/*
	301	* Reset as per the packet driver method. Judging by the EISA cfg
	302	* file, this just toggles the "Board Enable" bits (bit 2 and 0).
	303	*/
	304
	305	static void lne390_reset_8390(struct net_device *dev)
	306	{
	307	unsigned short ioaddr = dev->base_addr;
	308
	309	outb(0x04, ioaddr + LNE390_RESET_PORT);
	310	if (ei_debug > 1) printk("%s: resetting the LNE390...", dev->name);
	311
	312	mdelay(2);
	313
	314	ei_status.txing = 0;
	315	outb(0x01, ioaddr + LNE390_RESET_PORT);
	316	if (ei_debug > 1) printk("reset done\n");
	317
	318	return;
	319	}
	320
	321	/*
	322	* Note: In the following three functions is the implicit assumption
	323	* that the associated memcpy will only use "rep; movsl" as long as
	324	* we keep the counts as some multiple of doublewords. This is a
	325	* requirement of the hardware, and also prevents us from using
	326	* eth_io_copy_and_sum() since we can't guarantee it will limit
	327	* itself to doubleword access.
	328	*/
	329
	330	/*
	331	* Grab the 8390 specific header. Similar to the block_input routine, but
	332	* we don't need to be concerned with ring wrap as the header will be at
	333	* the start of a page, so we optimize accordingly. (A single doubleword.)
	334	*/
	335
	336	static void
	337	lne390_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	338	{
	339	void __iomem *hdr_start = ei_status.mem + ((ring_page - LNE390_START_PG)<<8);
	340	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	341	hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
	342	}
	343
6aa20a22	344	/*
1da177e4 LT	345	* Block input and output are easy on shared memory ethercards, the only
	346	* complication is when the ring buffer wraps. The count will already
	347	* be rounded up to a doubleword value via lne390_get_8390_hdr() above.
	348	*/
	349
	350	static void lne390_block_input(struct net_device dev, int count, struct sk_buff skb,
	351	int ring_offset)
	352	{
	353	void __iomem *xfer_start = ei_status.mem + ring_offset - (LNE390_START_PG<<8);
	354
	355	if (ring_offset + count > (LNE390_STOP_PG<<8)) {
	356	/* Packet wraps over end of ring buffer. */
	357	int semi_count = (LNE390_STOP_PG<<8) - ring_offset;
	358	memcpy_fromio(skb->data, xfer_start, semi_count);
	359	count -= semi_count;
	360	memcpy_fromio(skb->data + semi_count,
	361	ei_status.mem + (TX_PAGES<<8), count);
	362	} else {
	363	/* Packet is in one chunk. */
	364	memcpy_fromio(skb->data, xfer_start, count);
	365	}
	366	}
	367
	368	static void lne390_block_output(struct net_device *dev, int count,
	369	const unsigned char *buf, int start_page)
	370	{
	371	void __iomem *shmem = ei_status.mem + ((start_page - LNE390_START_PG)<<8);
	372
	373	count = (count + 3) & ~3; /* Round up to doubleword */
	374	memcpy_toio(shmem, buf, count);
	375	}
	376
	377	static int lne390_open(struct net_device *dev)
	378	{
	379	ei_open(dev);
	380	return 0;
	381	}
	382
	383	static int lne390_close(struct net_device *dev)
	384	{
	385
	386	if (ei_debug > 1)
	387	printk("%s: Shutting down ethercard.\n", dev->name);
	388
	389	ei_close(dev);
	390	return 0;
	391	}
	392
	393	#ifdef MODULE
	394	#define MAX_LNE_CARDS 4 /* Max number of LNE390 cards per module */
	395	static struct net_device *dev_lne[MAX_LNE_CARDS];
	396	static int io[MAX_LNE_CARDS];
	397	static int irq[MAX_LNE_CARDS];
	398	static int mem[MAX_LNE_CARDS];
	399
	400	module_param_array(io, int, NULL, 0);
	401	module_param_array(irq, int, NULL, 0);
	402	module_param_array(mem, int, NULL, 0);
	403	MODULE_PARM_DESC(io, "I/O base address(es)");
	404	MODULE_PARM_DESC(irq, "IRQ number(s)");
	405	MODULE_PARM_DESC(mem, "memory base address(es)");
	406	MODULE_DESCRIPTION("Mylex LNE390A/B EISA Ethernet driver");
	407	MODULE_LICENSE("GPL");
	408
dab3d02e	409	int __init init_module(void)
1da177e4 LT	410	{
	411	struct net_device *dev;
	412	int this_dev, found = 0;
	413
	414	for (this_dev = 0; this_dev < MAX_LNE_CARDS; this_dev++) {
	415	if (io[this_dev] == 0 && this_dev != 0)
	416	break;
	417	dev = alloc_ei_netdev();
	418	if (!dev)
	419	break;
	420	dev->irq = irq[this_dev];
	421	dev->base_addr = io[this_dev];
	422	dev->mem_start = mem[this_dev];
	423	if (do_lne390_probe(dev) == 0) {
b1fc5505 HX	424	dev_lne[found++] = dev;
b1fc5505 HX	425	continue;
1da177e4 LT	426	}
	427	free_netdev(dev);
	428	printk(KERN_WARNING "lne390.c: No LNE390 card found (i/o = 0x%x).\n", io[this_dev]);
	429	break;
	430	}
	431	if (found)
	432	return 0;
	433	return -ENXIO;
	434	}
	435
64916f1e DV	436	static void cleanup_card(struct net_device *dev)
	437	{
	438	free_irq(dev->irq, dev);
	439	release_region(dev->base_addr, LNE390_IO_EXTENT);
	440	iounmap(ei_status.mem);
	441	}
	442
1da177e4 LT	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