[mirror_ubuntu-zesty-kernel.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;

	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 __exit 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
1da177e4 LT	114	if (ioaddr > 0x1ff) { /* Check a single specified location. */
	115	if (!request_region(ioaddr, LNE390_IO_EXTENT, DRV_NAME))
	116	return -EBUSY;
	117	ret = lne390_probe1(dev, ioaddr);
	118	if (ret)
	119	release_region(ioaddr, LNE390_IO_EXTENT);
	120	return ret;
	121	}
	122	else if (ioaddr > 0) /* Don't probe at all. */
	123	return -ENXIO;
	124
	125	if (!EISA_bus) {
	126	#if LNE390_DEBUG & LNE390_D_PROBE
	127	printk("lne390-debug: Not an EISA bus. Not probing high ports.\n");
	128	#endif
	129	return -ENXIO;
	130	}
	131
	132	/* EISA spec allows for up to 16 slots, but 8 is typical. */
	133	for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
	134	if (!request_region(ioaddr, LNE390_IO_EXTENT, DRV_NAME))
	135	continue;
	136	if (lne390_probe1(dev, ioaddr) == 0)
	137	return 0;
	138	release_region(ioaddr, LNE390_IO_EXTENT);
	139	dev->irq = irq;
	140	dev->mem_start = mem_start;
	141	}
	142
	143	return -ENODEV;
	144	}
	145
1da177e4 LT	146	#ifndef MODULE
	147	struct net_device * __init lne390_probe(int unit)
	148	{
	149	struct net_device *dev = alloc_ei_netdev();
	150	int err;
	151
	152	if (!dev)
	153	return ERR_PTR(-ENOMEM);
	154
	155	sprintf(dev->name, "eth%d", unit);
	156	netdev_boot_setup_check(dev);
	157
	158	err = do_lne390_probe(dev);
	159	if (err)
	160	goto out;
1da177e4	161	return dev;
1da177e4 LT	162	out:
	163	free_netdev(dev);
	164	return ERR_PTR(err);
	165	}
	166	#endif
	167
	168	static int __init lne390_probe1(struct net_device *dev, int ioaddr)
	169	{
	170	int i, revision, ret;
	171	unsigned long eisa_id;
	172
	173	if (inb_p(ioaddr + LNE390_ID_PORT) == 0xff) return -ENODEV;
	174
	175	#if LNE390_DEBUG & LNE390_D_PROBE
	176	printk("lne390-debug: probe at %#x, ID %#8x\n", ioaddr, inl(ioaddr + LNE390_ID_PORT));
	177	printk("lne390-debug: config regs: %#x %#x\n",
	178	inb(ioaddr + LNE390_CFG1), inb(ioaddr + LNE390_CFG2));
	179	#endif
	180
	181
	182	/* Check the EISA ID of the card. */
	183	eisa_id = inl(ioaddr + LNE390_ID_PORT);
	184	if ((eisa_id != LNE390_ID0) && (eisa_id != LNE390_ID1)) {
	185	return -ENODEV;
	186	}
	187
	188	revision = (eisa_id >> 24) & 0x01; /* 0 = rev A, 1 rev B */
6aa20a22	189
1da177e4 LT	190	#if 0
	191	/* Check the Mylex vendor ID as well. Not really required. */
	192	if (inb(ioaddr + LNE390_SA_PROM + 0) != LNE390_ADDR0
	193	\|\| inb(ioaddr + LNE390_SA_PROM + 1) != LNE390_ADDR1
	194	\|\| inb(ioaddr + LNE390_SA_PROM + 2) != LNE390_ADDR2 ) {
	195	printk("lne390.c: card not found");
	196	for(i = 0; i < ETHER_ADDR_LEN; i++)
	197	printk(" %02x", inb(ioaddr + LNE390_SA_PROM + i));
	198	printk(" (invalid prefix).\n");
	199	return -ENODEV;
	200	}
	201	#endif
	202
	203	printk("lne390.c: LNE390%X in EISA slot %d, address", 0xa+revision, ioaddr/0x1000);
	204	for(i = 0; i < ETHER_ADDR_LEN; i++)
	205	printk(" %02x", (dev->dev_addr[i] = inb(ioaddr + LNE390_SA_PROM + i)));
	206	printk(".\nlne390.c: ");
	207
	208	/* Snarf the interrupt now. CFG file has them all listed as `edge' with share=NO */
	209	if (dev->irq == 0) {
	210	unsigned char irq_reg = inb(ioaddr + LNE390_CFG2) >> 3;
	211	dev->irq = irq_map[irq_reg & 0x07];
	212	printk("using");
	213	} else {
	214	/* This is useless unless we reprogram the card here too */
	215	if (dev->irq == 2) dev->irq = 9; /* Doh! */
	216	printk("assigning");
	217	}
	218	printk(" IRQ %d,", dev->irq);
	219
	220	if ((ret = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev))) {
	221	printk (" unable to get IRQ %d.\n", dev->irq);
	222	return ret;
	223	}
	224
	225	if (dev->mem_start == 0) {
	226	unsigned char mem_reg = inb(ioaddr + LNE390_CFG2) & 0x07;
	227
	228	if (revision) /* LNE390B */
	229	dev->mem_start = shmem_mapB[mem_reg] * 0x10000;
	230	else /* LNE390A */
	231	dev->mem_start = shmem_mapA[mem_reg] * 0x10000;
	232	printk(" using ");
	233	} else {
	234	/* Should check for value in shmem_map and reprogram the card to use it */
	235	dev->mem_start &= 0xfff0000;
	236	printk(" assigning ");
	237	}
	238
	239	printk("%dkB memory at physical address %#lx\n",
	240	LNE390_STOP_PG/4, dev->mem_start);
	241
	242	/*
	243	BEWARE!! Some dain-bramaged EISA SCUs will allow you to put
	244	the card mem within the region covered by `normal' RAM !!!
	245
	246	ioremap() will fail in that case.
	247	*/
	248	ei_status.mem = ioremap(dev->mem_start, LNE390_STOP_PG*0x100);
	249	if (!ei_status.mem) {
	250	printk(KERN_ERR "lne390.c: Unable to remap card memory above 1MB !!\n");
	251	printk(KERN_ERR "lne390.c: Try using EISA SCU to set memory below 1MB.\n");
	252	printk(KERN_ERR "lne390.c: Driver NOT installed.\n");
	253	ret = -EAGAIN;
254	goto cleanup;
255	}
256	printk("lne390.c: remapped %dkB card memory to virtual address %p\n",
257	LNE390_STOP_PG/4, ei_status.mem);
258
259	dev->mem_start = (unsigned long)ei_status.mem;
260	dev->mem_end = dev->mem_start + (LNE390_STOP_PG - LNE390_START_PG)*256;
261
262	/* The 8390 offset is zero for the LNE390 */
263	dev->base_addr = ioaddr;
264
265	ei_status.name = "LNE390";
266	ei_status.tx_start_page = LNE390_START_PG;
267	ei_status.rx_start_page = LNE390_START_PG + TX_PAGES;
268	ei_status.stop_page = LNE390_STOP_PG;
269	ei_status.word16 = 1;
270
271	if (ei_debug > 0)
272	printk(version);
273
274	ei_status.reset_8390 = &lne390_reset_8390;
275	ei_status.block_input = &lne390_block_input;
276	ei_status.block_output = &lne390_block_output;
277	ei_status.get_8390_hdr = &lne390_get_8390_hdr;
278
279	dev->open = &lne390_open;
280	dev->stop = &lne390_close;
281	#ifdef CONFIG_NET_POLL_CONTROLLER
282	dev->poll_controller = ei_poll;
283	#endif
284	NS8390_init(dev, 0);
b1fc5505 HX	285
	286	ret = register_netdev(dev);
	287	if (ret)
	288	goto unmap;
1da177e4	289	return 0;
b1fc5505 HX	290	unmap:
b1fc5505 HX	291	if (ei_status.reg0)
387d890d	292	iounmap(ei_status.mem);
1da177e4 LT	293	cleanup:
	294	free_irq(dev->irq, dev);
	295	return ret;
	296	}
	297
	298	/*
	299	* Reset as per the packet driver method. Judging by the EISA cfg
	300	* file, this just toggles the "Board Enable" bits (bit 2 and 0).
	301	*/
	302
	303	static void lne390_reset_8390(struct net_device *dev)
	304	{
	305	unsigned short ioaddr = dev->base_addr;
	306
	307	outb(0x04, ioaddr + LNE390_RESET_PORT);
	308	if (ei_debug > 1) printk("%s: resetting the LNE390...", dev->name);
	309
	310	mdelay(2);
	311
	312	ei_status.txing = 0;
	313	outb(0x01, ioaddr + LNE390_RESET_PORT);
	314	if (ei_debug > 1) printk("reset done\n");
	315
	316	return;
	317	}
	318
	319	/*
	320	* Note: In the following three functions is the implicit assumption
	321	* that the associated memcpy will only use "rep; movsl" as long as
	322	* we keep the counts as some multiple of doublewords. This is a
	323	* requirement of the hardware, and also prevents us from using
	324	* eth_io_copy_and_sum() since we can't guarantee it will limit
	325	* itself to doubleword access.
	326	*/
	327
	328	/*
	329	* Grab the 8390 specific header. Similar to the block_input routine, but
	330	* we don't need to be concerned with ring wrap as the header will be at
	331	* the start of a page, so we optimize accordingly. (A single doubleword.)
	332	*/
	333
	334	static void
	335	lne390_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	336	{
	337	void __iomem *hdr_start = ei_status.mem + ((ring_page - LNE390_START_PG)<<8);
	338	memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr));
	339	hdr->count = (hdr->count + 3) & ~3; /* Round up allocation. */
	340	}
	341
6aa20a22	342	/*
1da177e4 LT	343	* Block input and output are easy on shared memory ethercards, the only
	344	* complication is when the ring buffer wraps. The count will already
	345	* be rounded up to a doubleword value via lne390_get_8390_hdr() above.
	346	*/
	347
	348	static void lne390_block_input(struct net_device dev, int count, struct sk_buff skb,
	349	int ring_offset)
	350	{
	351	void __iomem *xfer_start = ei_status.mem + ring_offset - (LNE390_START_PG<<8);
	352
	353	if (ring_offset + count > (LNE390_STOP_PG<<8)) {
	354	/* Packet wraps over end of ring buffer. */
	355	int semi_count = (LNE390_STOP_PG<<8) - ring_offset;
	356	memcpy_fromio(skb->data, xfer_start, semi_count);
	357	count -= semi_count;
	358	memcpy_fromio(skb->data + semi_count,
	359	ei_status.mem + (TX_PAGES<<8), count);
	360	} else {
	361	/* Packet is in one chunk. */
	362	memcpy_fromio(skb->data, xfer_start, count);
	363	}
	364	}
	365
	366	static void lne390_block_output(struct net_device *dev, int count,
	367	const unsigned char *buf, int start_page)
	368	{
	369	void __iomem *shmem = ei_status.mem + ((start_page - LNE390_START_PG)<<8);
	370
	371	count = (count + 3) & ~3; /* Round up to doubleword */
	372	memcpy_toio(shmem, buf, count);
	373	}
	374
	375	static int lne390_open(struct net_device *dev)
	376	{
	377	ei_open(dev);
	378	return 0;
	379	}
	380
	381	static int lne390_close(struct net_device *dev)
	382	{
	383
	384	if (ei_debug > 1)
	385	printk("%s: Shutting down ethercard.\n", dev->name);
	386
	387	ei_close(dev);
	388	return 0;
	389	}
	390
	391	#ifdef MODULE
	392	#define MAX_LNE_CARDS 4 /* Max number of LNE390 cards per module */
	393	static struct net_device *dev_lne[MAX_LNE_CARDS];
	394	static int io[MAX_LNE_CARDS];
	395	static int irq[MAX_LNE_CARDS];
	396	static int mem[MAX_LNE_CARDS];
	397
	398	module_param_array(io, int, NULL, 0);
	399	module_param_array(irq, int, NULL, 0);
	400	module_param_array(mem, int, NULL, 0);
	401	MODULE_PARM_DESC(io, "I/O base address(es)");
	402	MODULE_PARM_DESC(irq, "IRQ number(s)");
	403	MODULE_PARM_DESC(mem, "memory base address(es)");
	404	MODULE_DESCRIPTION("Mylex LNE390A/B EISA Ethernet driver");
	405	MODULE_LICENSE("GPL");
	406
dab3d02e	407	int __init init_module(void)
1da177e4 LT	408	{
	409	struct net_device *dev;
	410	int this_dev, found = 0;
	411
	412	for (this_dev = 0; this_dev < MAX_LNE_CARDS; this_dev++) {
	413	if (io[this_dev] == 0 && this_dev != 0)
	414	break;
	415	dev = alloc_ei_netdev();
	416	if (!dev)
	417	break;
	418	dev->irq = irq[this_dev];
	419	dev->base_addr = io[this_dev];
	420	dev->mem_start = mem[this_dev];
	421	if (do_lne390_probe(dev) == 0) {
b1fc5505 HX	422	dev_lne[found++] = dev;
b1fc5505 HX	423	continue;
1da177e4 LT	424	}
	425	free_netdev(dev);
	426	printk(KERN_WARNING "lne390.c: No LNE390 card found (i/o = 0x%x).\n", io[this_dev]);
	427	break;
	428	}
	429	if (found)
	430	return 0;
	431	return -ENXIO;
	432	}
	433
64916f1e DV	434	static void cleanup_card(struct net_device *dev)
	435	{
	436	free_irq(dev->irq, dev);
	437	release_region(dev->base_addr, LNE390_IO_EXTENT);
	438	iounmap(ei_status.mem);
	439	}
	440
afc8eb46	441	void __exit cleanup_module(void)
1da177e4 LT	442	{
	443	int this_dev;
	444
	445	for (this_dev = 0; this_dev < MAX_LNE_CARDS; this_dev++) {
	446	struct net_device *dev = dev_lne[this_dev];
	447	if (dev) {
	448	unregister_netdev(dev);
	449	cleanup_card(dev);
	450	free_netdev(dev);
	451	}
	452	}
	453	}
	454	#endif /* MODULE */
	455