[deliverable/linux.git] / drivers / net / hp.c

/* hp.c: A HP LAN ethernet driver for linux. */
/*
	Written 1993-94 by Donald Becker.

	Copyright 1993 United States Government as represented by the
	Director, National Security Agency.

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

	The author may be reached as becker@scyld.com, or C/O
	Scyld Computing Corporation
	410 Severn Ave., Suite 210
	Annapolis MD 21403

	This is a driver for the HP PC-LAN adaptors.

	Sources:
	  The Crynwr packet driver.
*/

static const char version[] =
	"hp.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";


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

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

#include "8390.h"

#define DRV_NAME "hp"

/* A zero-terminated list of I/O addresses to be probed. */
static unsigned int hppclan_portlist[] __initdata =
{ 0x300, 0x320, 0x340, 0x280, 0x2C0, 0x200, 0x240, 0};

#define HP_IO_EXTENT	32

#define HP_DATAPORT		0x0c	/* "Remote DMA" data port. */
#define HP_ID			0x07
#define HP_CONFIGURE	0x08	/* Configuration register. */
#define	 HP_RUN			0x01	/* 1 == Run, 0 == reset. */
#define	 HP_IRQ			0x0E	/* Mask for software-configured IRQ line. */
#define	 HP_DATAON		0x10	/* Turn on dataport */
#define NIC_OFFSET		0x10	/* Offset the 8390 registers. */

#define HP_START_PG		0x00	/* First page of TX buffer */
#define HP_8BSTOP_PG	0x80	/* Last page +1 of RX ring */
#define HP_16BSTOP_PG	0xFF	/* Same, for 16 bit cards. */

static int hp_probe1(struct net_device *dev, int ioaddr);

static int hp_open(struct net_device *dev);
static int hp_close(struct net_device *dev);
static void hp_reset_8390(struct net_device *dev);
static void hp_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr,
					int ring_page);
static void hp_block_input(struct net_device *dev, int count,
					struct sk_buff *skb , int ring_offset);
static void hp_block_output(struct net_device *dev, int count,
							const unsigned char *buf, int start_page);

static void hp_init_card(struct net_device *dev);

/* The map from IRQ number to HP_CONFIGURE register setting. */
/* My default is IRQ5	             0  1  2  3  4  5  6  7  8  9 10 11 */
static char irqmap[16] __initdata= { 0, 0, 4, 6, 8,10, 0,14, 0, 4, 2,12,0,0,0,0};


/*	Probe for an HP LAN adaptor.
	Also initialize the card and fill in STATION_ADDR with the station
	address. */

static int __init do_hp_probe(struct net_device *dev)
{
	int i;
	int base_addr = dev->base_addr;
	int irq = dev->irq;

	if (base_addr > 0x1ff)		/* Check a single specified location. */
		return hp_probe1(dev, base_addr);
	else if (base_addr != 0)	/* Don't probe at all. */
		return -ENXIO;

	for (i = 0; hppclan_portlist[i]; i++) {
		if (hp_probe1(dev, hppclan_portlist[i]) == 0)
			return 0;
		dev->irq = irq;
	}

	return -ENODEV;
}

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

static int __init hp_probe1(struct net_device *dev, int ioaddr)
{
	int i, retval, board_id, wordmode;
	const char *name;
	static unsigned version_printed;

	if (!request_region(ioaddr, HP_IO_EXTENT, DRV_NAME))
		return -EBUSY;

	/* Check for the HP physical address, 08 00 09 xx xx xx. */
	/* This really isn't good enough: we may pick up HP LANCE boards
	   also!  Avoid the lance 0x5757 signature. */
	if (inb(ioaddr) != 0x08
		|| inb(ioaddr+1) != 0x00
		|| inb(ioaddr+2) != 0x09
		|| inb(ioaddr+14) == 0x57) {
		retval = -ENODEV;
		goto out;
	}

	/* Set up the parameters based on the board ID.
	   If you have additional mappings, please mail them to me -djb. */
	if ((board_id = inb(ioaddr + HP_ID)) & 0x80) {
		name = "HP27247";
		wordmode = 1;
	} else {
		name = "HP27250";
		wordmode = 0;
	}

	if (ei_debug  &&  version_printed++ == 0)
		printk(version);

	printk("%s: %s (ID %02x) at %#3x,", dev->name, name, board_id, ioaddr);

	for(i = 0; i < ETHER_ADDR_LEN; i++)
		printk(" %2.2x", dev->dev_addr[i] = inb(ioaddr + i));

	/* Snarf the interrupt now.  Someday this could be moved to open(). */
	if (dev->irq < 2) {
		int irq_16list[] = { 11, 10, 5, 3, 4, 7, 9, 0};
		int irq_8list[] = { 7, 5, 3, 4, 9, 0};
		int *irqp = wordmode ? irq_16list : irq_8list;
		do {
			int irq = *irqp;
			if (request_irq (irq, NULL, 0, "bogus", NULL) != -EBUSY) {
				unsigned long cookie = probe_irq_on();
				/* Twinkle the interrupt, and check if it's seen. */
				outb_p(irqmap[irq] | HP_RUN, ioaddr + HP_CONFIGURE);
				outb_p( 0x00 | HP_RUN, ioaddr + HP_CONFIGURE);
				if (irq == probe_irq_off(cookie)		 /* It's a good IRQ line! */
					&& request_irq (irq, ei_interrupt, 0, DRV_NAME, dev) == 0) {
					printk(" selecting IRQ %d.\n", irq);
					dev->irq = *irqp;
					break;
				}
			}
		} while (*++irqp);
		if (*irqp == 0) {
			printk(" no free IRQ lines.\n");
			retval = -EBUSY;
			goto out;
		}
	} else {
		if (dev->irq == 2)
			dev->irq = 9;
		if ((retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev))) {
			printk (" unable to get IRQ %d.\n", dev->irq);
			goto out;
		}
	}

	/* Set the base address to point to the NIC, not the "real" base! */
	dev->base_addr = ioaddr + NIC_OFFSET;
	dev->open = &hp_open;
	dev->stop = &hp_close;
#ifdef CONFIG_NET_POLL_CONTROLLER
	dev->poll_controller = ei_poll;
#endif

	ei_status.name = name;
	ei_status.word16 = wordmode;
	ei_status.tx_start_page = HP_START_PG;
	ei_status.rx_start_page = HP_START_PG + TX_PAGES;
	ei_status.stop_page = wordmode ? HP_16BSTOP_PG : HP_8BSTOP_PG;

	ei_status.reset_8390 = &hp_reset_8390;
	ei_status.get_8390_hdr = &hp_get_8390_hdr;
	ei_status.block_input = &hp_block_input;
	ei_status.block_output = &hp_block_output;
	hp_init_card(dev);

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

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

static int
hp_close(struct net_device *dev)
{
	ei_close(dev);
	return 0;
}

static void
hp_reset_8390(struct net_device *dev)
{
	int hp_base = dev->base_addr - NIC_OFFSET;
	int saved_config = inb_p(hp_base + HP_CONFIGURE);

	if (ei_debug > 1) printk("resetting the 8390 time=%ld...", jiffies);
	outb_p(0x00, hp_base + HP_CONFIGURE);
	ei_status.txing = 0;
	/* Pause just a few cycles for the hardware reset to take place. */
	udelay(5);

	outb_p(saved_config, hp_base + HP_CONFIGURE);
	udelay(5);

	if ((inb_p(hp_base+NIC_OFFSET+EN0_ISR) & ENISR_RESET) == 0)
		printk("%s: hp_reset_8390() did not complete.\n", dev->name);

	if (ei_debug > 1) printk("8390 reset done (%ld).", jiffies);
	return;
}

static void
hp_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page)
{
	int nic_base = dev->base_addr;
	int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);

	outb_p(saved_config | HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
	outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base);
	outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
	outb_p(0, nic_base + EN0_RCNTHI);
	outb_p(0, nic_base + EN0_RSARLO);	/* On page boundary */
	outb_p(ring_page, nic_base + EN0_RSARHI);
	outb_p(E8390_RREAD+E8390_START, nic_base);

	if (ei_status.word16)
	  insw(nic_base - NIC_OFFSET + HP_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
	else
	  insb(nic_base - NIC_OFFSET + HP_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));

	outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
}

/* Block input and output, similar to the Crynwr packet driver. If you are
   porting to a new ethercard look at the packet driver source for hints.
   The HP LAN doesn't use shared memory -- we put the packet
   out through the "remote DMA" dataport. */

static void
hp_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset)
{
	int nic_base = dev->base_addr;
	int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);
	int xfer_count = count;
	char *buf = skb->data;

	outb_p(saved_config | HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
	outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base);
	outb_p(count & 0xff, nic_base + EN0_RCNTLO);
	outb_p(count >> 8, nic_base + EN0_RCNTHI);
	outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
	outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
	outb_p(E8390_RREAD+E8390_START, nic_base);
	if (ei_status.word16) {
	  insw(nic_base - NIC_OFFSET + HP_DATAPORT,buf,count>>1);
	  if (count & 0x01)
		buf[count-1] = inb(nic_base - NIC_OFFSET + HP_DATAPORT), xfer_count++;
	} else {
		insb(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count);
	}
	/* This is for the ALPHA version only, remove for later releases. */
	if (ei_debug > 0) {			/* DMA termination address check... */
	  int high = inb_p(nic_base + EN0_RSARHI);
	  int low = inb_p(nic_base + EN0_RSARLO);
	  int addr = (high << 8) + low;
	  /* Check only the lower 8 bits so we can ignore ring wrap. */
	  if (((ring_offset + xfer_count) & 0xff) != (addr & 0xff))
		printk("%s: RX transfer address mismatch, %#4.4x vs. %#4.4x (actual).\n",
			   dev->name, ring_offset + xfer_count, addr);
	}
	outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
}

static void
hp_block_output(struct net_device *dev, int count,
				const unsigned char *buf, int start_page)
{
	int nic_base = dev->base_addr;
	int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);

	outb_p(saved_config | HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
	/* Round the count up for word writes.	Do we need to do this?
	   What effect will an odd byte count have on the 8390?
	   I should check someday. */
	if (ei_status.word16 && (count & 0x01))
	  count++;
	/* We should already be in page 0, but to be safe... */
	outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base);

#ifdef NE8390_RW_BUGFIX
	/* Handle the read-before-write bug the same way as the
	   Crynwr packet driver -- the NatSemi method doesn't work. */
	outb_p(0x42, nic_base + EN0_RCNTLO);
	outb_p(0,	nic_base + EN0_RCNTHI);
	outb_p(0xff, nic_base + EN0_RSARLO);
	outb_p(0x00, nic_base + EN0_RSARHI);
#define NE_CMD	 	0x00
	outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
	/* Make certain that the dummy read has occurred. */
	inb_p(0x61);
	inb_p(0x61);
#endif

	outb_p(count & 0xff, nic_base + EN0_RCNTLO);
	outb_p(count >> 8,	 nic_base + EN0_RCNTHI);
	outb_p(0x00, nic_base + EN0_RSARLO);
	outb_p(start_page, nic_base + EN0_RSARHI);

	outb_p(E8390_RWRITE+E8390_START, nic_base);
	if (ei_status.word16) {
		/* Use the 'rep' sequence for 16 bit boards. */
		outsw(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count>>1);
	} else {
		outsb(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count);
	}

	/* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here -- it's broken! */

	/* This is for the ALPHA version only, remove for later releases. */
	if (ei_debug > 0) {			/* DMA termination address check... */
	  int high = inb_p(nic_base + EN0_RSARHI);
	  int low  = inb_p(nic_base + EN0_RSARLO);
	  int addr = (high << 8) + low;
	  if ((start_page << 8) + count != addr)
		printk("%s: TX Transfer address mismatch, %#4.4x vs. %#4.4x.\n",
			   dev->name, (start_page << 8) + count, addr);
	}
	outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
	return;
}

/* This function resets the ethercard if something screws up. */
static void __init
hp_init_card(struct net_device *dev)
{
	int irq = dev->irq;
	NS8390_init(dev, 0);
	outb_p(irqmap[irq&0x0f] | HP_RUN,
		   dev->base_addr - NIC_OFFSET + HP_CONFIGURE);
	return;
}

#ifdef MODULE
#define MAX_HP_CARDS	4	/* Max number of HP cards per module */
static struct net_device *dev_hp[MAX_HP_CARDS];
static int io[MAX_HP_CARDS];
static int irq[MAX_HP_CARDS];

module_param_array(io, int, NULL, 0);
module_param_array(irq, int, NULL, 0);
MODULE_PARM_DESC(io, "I/O base address(es)");
MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
MODULE_DESCRIPTION("HP PC-LAN ISA ethernet driver");
MODULE_LICENSE("GPL");

/* This is set up so that only a single autoprobe takes place per call.
ISA device autoprobes on a running machine are not recommended. */
int __init
init_module(void)
{
	struct net_device *dev;
	int this_dev, found = 0;

	for (this_dev = 0; this_dev < MAX_HP_CARDS; this_dev++) {
		if (io[this_dev] == 0)  {
			if (this_dev != 0) break; /* only autoprobe 1st one */
			printk(KERN_NOTICE "hp.c: Presently autoprobing (not recommended) for a single card.\n");
		}
		dev = alloc_ei_netdev();
		if (!dev)
			break;
		dev->irq = irq[this_dev];
		dev->base_addr = io[this_dev];
		if (do_hp_probe(dev) == 0) {
			dev_hp[found++] = dev;
			continue;
		}
		free_netdev(dev);
		printk(KERN_WARNING "hp.c: No HP 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 - NIC_OFFSET, HP_IO_EXTENT);
}

void __exit
cleanup_module(void)
{
	int this_dev;

	for (this_dev = 0; this_dev < MAX_HP_CARDS; this_dev++) {
		struct net_device *dev = dev_hp[this_dev];
		if (dev) {
			unregister_netdev(dev);
			cleanup_card(dev);
			free_netdev(dev);
		}
	}
}
#endif /* MODULE */
Commit	Line	Data
1da177e4 LT	1	/* hp.c: A HP LAN ethernet driver for linux. */
	2	/*
	3	Written 1993-94 by Donald Becker.
	4
	5	Copyright 1993 United States Government as represented by the
	6	Director, National Security Agency.
	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	The author may be reached as becker@scyld.com, or C/O
	12	Scyld Computing Corporation
	13	410 Severn Ave., Suite 210
	14	Annapolis MD 21403
	15
	16	This is a driver for the HP PC-LAN adaptors.
	17
	18	Sources:
	19	The Crynwr packet driver.
	20	*/
	21
	22	static const char version[] =
	23	"hp.c:v1.10 9/23/94 Donald Becker (becker@cesdis.gsfc.nasa.gov)\n";
	24
	25
	26	#include <linux/module.h>
	27	#include <linux/kernel.h>
	28	#include <linux/errno.h>
	29	#include <linux/ioport.h>
	30	#include <linux/netdevice.h>
	31	#include <linux/etherdevice.h>
	32	#include <linux/init.h>
	33	#include <linux/delay.h>
	34
	35	#include <asm/system.h>
	36	#include <asm/io.h>
	37
	38	#include "8390.h"
	39
	40	#define DRV_NAME "hp"
	41
	42	/* A zero-terminated list of I/O addresses to be probed. */
	43	static unsigned int hppclan_portlist[] __initdata =
	44	{ 0x300, 0x320, 0x340, 0x280, 0x2C0, 0x200, 0x240, 0};
	45
	46	#define HP_IO_EXTENT 32
	47
	48	#define HP_DATAPORT 0x0c /* "Remote DMA" data port. */
	49	#define HP_ID 0x07
	50	#define HP_CONFIGURE 0x08 /* Configuration register. */
	51	#define HP_RUN 0x01 /* 1 == Run, 0 == reset. */
	52	#define HP_IRQ 0x0E /* Mask for software-configured IRQ line. */
	53	#define HP_DATAON 0x10 /* Turn on dataport */
	54	#define NIC_OFFSET 0x10 /* Offset the 8390 registers. */
	55
	56	#define HP_START_PG 0x00 /* First page of TX buffer */
	57	#define HP_8BSTOP_PG 0x80 /* Last page +1 of RX ring */
	58	#define HP_16BSTOP_PG 0xFF /* Same, for 16 bit cards. */
	59
	60	static int hp_probe1(struct net_device *dev, int ioaddr);
	61
	62	static int hp_open(struct net_device *dev);
	63	static int hp_close(struct net_device *dev);
	64	static void hp_reset_8390(struct net_device *dev);
65	static void hp_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr,
66	int ring_page);
67	static void hp_block_input(struct net_device *dev, int count,
68	struct sk_buff *skb , int ring_offset);
69	static void hp_block_output(struct net_device *dev, int count,
70	const unsigned char *buf, int start_page);
71
72	static void hp_init_card(struct net_device *dev);
73
74	/* The map from IRQ number to HP_CONFIGURE register setting. */
75	/* My default is IRQ5 0 1 2 3 4 5 6 7 8 9 10 11 */
76	static char irqmap[16] __initdata= { 0, 0, 4, 6, 8,10, 0,14, 0, 4, 2,12,0,0,0,0};
77
6aa20a22	78
1da177e4 LT	79	/* Probe for an HP LAN adaptor.
	80	Also initialize the card and fill in STATION_ADDR with the station
	81	address. */
	82
	83	static int __init do_hp_probe(struct net_device *dev)
	84	{
	85	int i;
	86	int base_addr = dev->base_addr;
	87	int irq = dev->irq;
	88
1da177e4 LT	89	if (base_addr > 0x1ff) /* Check a single specified location. */
	90	return hp_probe1(dev, base_addr);
	91	else if (base_addr != 0) /* Don't probe at all. */
	92	return -ENXIO;
	93
	94	for (i = 0; hppclan_portlist[i]; i++) {
	95	if (hp_probe1(dev, hppclan_portlist[i]) == 0)
	96	return 0;
	97	dev->irq = irq;
	98	}
	99
	100	return -ENODEV;
	101	}
	102
1da177e4 LT	103	#ifndef MODULE
	104	struct net_device * __init hp_probe(int unit)
	105	{
	106	struct net_device *dev = alloc_ei_netdev();
	107	int err;
	108
	109	if (!dev)
	110	return ERR_PTR(-ENOMEM);
	111
	112	sprintf(dev->name, "eth%d", unit);
	113	netdev_boot_setup_check(dev);
	114
	115	err = do_hp_probe(dev);
	116	if (err)
	117	goto out;
1da177e4	118	return dev;
1da177e4 LT	119	out:
	120	free_netdev(dev);
	121	return ERR_PTR(err);
	122	}
	123	#endif
	124
	125	static int __init hp_probe1(struct net_device *dev, int ioaddr)
	126	{
	127	int i, retval, board_id, wordmode;
	128	const char *name;
	129	static unsigned version_printed;
	130
	131	if (!request_region(ioaddr, HP_IO_EXTENT, DRV_NAME))
	132	return -EBUSY;
	133
	134	/* Check for the HP physical address, 08 00 09 xx xx xx. */
	135	/* This really isn't good enough: we may pick up HP LANCE boards
	136	also! Avoid the lance 0x5757 signature. */
	137	if (inb(ioaddr) != 0x08
	138	\|\| inb(ioaddr+1) != 0x00
	139	\|\| inb(ioaddr+2) != 0x09
	140	\|\| inb(ioaddr+14) == 0x57) {
	141	retval = -ENODEV;
	142	goto out;
	143	}
	144
	145	/* Set up the parameters based on the board ID.
	146	If you have additional mappings, please mail them to me -djb. */
	147	if ((board_id = inb(ioaddr + HP_ID)) & 0x80) {
	148	name = "HP27247";
	149	wordmode = 1;
	150	} else {
	151	name = "HP27250";
	152	wordmode = 0;
	153	}
	154
	155	if (ei_debug && version_printed++ == 0)
	156	printk(version);
	157
	158	printk("%s: %s (ID %02x) at %#3x,", dev->name, name, board_id, ioaddr);
	159
	160	for(i = 0; i < ETHER_ADDR_LEN; i++)
	161	printk(" %2.2x", dev->dev_addr[i] = inb(ioaddr + i));
	162
	163	/* Snarf the interrupt now. Someday this could be moved to open(). */
	164	if (dev->irq < 2) {
	165	int irq_16list[] = { 11, 10, 5, 3, 4, 7, 9, 0};
	166	int irq_8list[] = { 7, 5, 3, 4, 9, 0};
	167	int *irqp = wordmode ? irq_16list : irq_8list;
	168	do {
	169	int irq = *irqp;
	170	if (request_irq (irq, NULL, 0, "bogus", NULL) != -EBUSY) {
	171	unsigned long cookie = probe_irq_on();
	172	/* Twinkle the interrupt, and check if it's seen. */
	173	outb_p(irqmap[irq] \| HP_RUN, ioaddr + HP_CONFIGURE);
	174	outb_p( 0x00 \| HP_RUN, ioaddr + HP_CONFIGURE);
	175	if (irq == probe_irq_off(cookie) /* It's a good IRQ line! */
	176	&& request_irq (irq, ei_interrupt, 0, DRV_NAME, dev) == 0) {
	177	printk(" selecting IRQ %d.\n", irq);
	178	dev->irq = *irqp;
	179	break;
	180	}
	181	}
	182	} while (*++irqp);
183	if (*irqp == 0) {
184	printk(" no free IRQ lines.\n");
185	retval = -EBUSY;
186	goto out;
187	}
188	} else {
189	if (dev->irq == 2)
190	dev->irq = 9;
191	if ((retval = request_irq(dev->irq, ei_interrupt, 0, DRV_NAME, dev))) {
192	printk (" unable to get IRQ %d.\n", dev->irq);
193	goto out;
194	}
195	}
196
197	/* Set the base address to point to the NIC, not the "real" base! */
198	dev->base_addr = ioaddr + NIC_OFFSET;
199	dev->open = &hp_open;
200	dev->stop = &hp_close;
201	#ifdef CONFIG_NET_POLL_CONTROLLER
202	dev->poll_controller = ei_poll;
203	#endif
204
205	ei_status.name = name;
206	ei_status.word16 = wordmode;
207	ei_status.tx_start_page = HP_START_PG;
208	ei_status.rx_start_page = HP_START_PG + TX_PAGES;
209	ei_status.stop_page = wordmode ? HP_16BSTOP_PG : HP_8BSTOP_PG;
210
211	ei_status.reset_8390 = &hp_reset_8390;
212	ei_status.get_8390_hdr = &hp_get_8390_hdr;
213	ei_status.block_input = &hp_block_input;
214	ei_status.block_output = &hp_block_output;
215	hp_init_card(dev);
216
b1fc5505	217	retval = register_netdev(dev);
	218	if (retval)
	219	goto out1;
1da177e4	220	return 0;
b1fc5505	221	out1:
b1fc5505	222	free_irq(dev->irq, dev);
1da177e4 LT	223	out:
	224	release_region(ioaddr, HP_IO_EXTENT);
	225	return retval;
	226	}
	227
	228	static int
	229	hp_open(struct net_device *dev)
	230	{
	231	ei_open(dev);
	232	return 0;
	233	}
	234
	235	static int
	236	hp_close(struct net_device *dev)
	237	{
	238	ei_close(dev);
	239	return 0;
	240	}
	241
	242	static void
	243	hp_reset_8390(struct net_device *dev)
	244	{
	245	int hp_base = dev->base_addr - NIC_OFFSET;
	246	int saved_config = inb_p(hp_base + HP_CONFIGURE);
	247
	248	if (ei_debug > 1) printk("resetting the 8390 time=%ld...", jiffies);
	249	outb_p(0x00, hp_base + HP_CONFIGURE);
	250	ei_status.txing = 0;
	251	/* Pause just a few cycles for the hardware reset to take place. */
	252	udelay(5);
	253
	254	outb_p(saved_config, hp_base + HP_CONFIGURE);
	255	udelay(5);
	256
	257	if ((inb_p(hp_base+NIC_OFFSET+EN0_ISR) & ENISR_RESET) == 0)
	258	printk("%s: hp_reset_8390() did not complete.\n", dev->name);
	259
	260	if (ei_debug > 1) printk("8390 reset done (%ld).", jiffies);
	261	return;
	262	}
	263
	264	static void
	265	hp_get_8390_hdr(struct net_device dev, struct e8390_pkt_hdr hdr, int ring_page)
	266	{
	267	int nic_base = dev->base_addr;
	268	int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);
	269
	270	outb_p(saved_config \| HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
	271	outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base);
	272	outb_p(sizeof(struct e8390_pkt_hdr), nic_base + EN0_RCNTLO);
	273	outb_p(0, nic_base + EN0_RCNTHI);
	274	outb_p(0, nic_base + EN0_RSARLO); /* On page boundary */
	275	outb_p(ring_page, nic_base + EN0_RSARHI);
	276	outb_p(E8390_RREAD+E8390_START, nic_base);
	277
	278	if (ei_status.word16)
	279	insw(nic_base - NIC_OFFSET + HP_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr)>>1);
	280	else
	281	insb(nic_base - NIC_OFFSET + HP_DATAPORT, hdr, sizeof(struct e8390_pkt_hdr));
	282
	283	outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
	284	}
	285
	286	/* Block input and output, similar to the Crynwr packet driver. If you are
287	porting to a new ethercard look at the packet driver source for hints.
288	The HP LAN doesn't use shared memory -- we put the packet
289	out through the "remote DMA" dataport. */
290
291	static void
292	hp_block_input(struct net_device dev, int count, struct sk_buff skb, int ring_offset)
293	{
294	int nic_base = dev->base_addr;
295	int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);
296	int xfer_count = count;
297	char *buf = skb->data;
298
299	outb_p(saved_config \| HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
300	outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, nic_base);
301	outb_p(count & 0xff, nic_base + EN0_RCNTLO);
302	outb_p(count >> 8, nic_base + EN0_RCNTHI);
303	outb_p(ring_offset & 0xff, nic_base + EN0_RSARLO);
304	outb_p(ring_offset >> 8, nic_base + EN0_RSARHI);
305	outb_p(E8390_RREAD+E8390_START, nic_base);
306	if (ei_status.word16) {
307	insw(nic_base - NIC_OFFSET + HP_DATAPORT,buf,count>>1);
308	if (count & 0x01)
309	buf[count-1] = inb(nic_base - NIC_OFFSET + HP_DATAPORT), xfer_count++;
310	} else {
311	insb(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count);
312	}
313	/* This is for the ALPHA version only, remove for later releases. */
314	if (ei_debug > 0) { /* DMA termination address check... */
315	int high = inb_p(nic_base + EN0_RSARHI);
316	int low = inb_p(nic_base + EN0_RSARLO);
317	int addr = (high << 8) + low;
318	/* Check only the lower 8 bits so we can ignore ring wrap. */
319	if (((ring_offset + xfer_count) & 0xff) != (addr & 0xff))
320	printk("%s: RX transfer address mismatch, %#4.4x vs. %#4.4x (actual).\n",
321	dev->name, ring_offset + xfer_count, addr);
322	}
323	outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
324	}
325
326	static void
327	hp_block_output(struct net_device *dev, int count,
328	const unsigned char *buf, int start_page)
329	{
330	int nic_base = dev->base_addr;
331	int saved_config = inb_p(nic_base - NIC_OFFSET + HP_CONFIGURE);
332
333	outb_p(saved_config \| HP_DATAON, nic_base - NIC_OFFSET + HP_CONFIGURE);
334	/* Round the count up for word writes. Do we need to do this?
335	What effect will an odd byte count have on the 8390?
336	I should check someday. */
337	if (ei_status.word16 && (count & 0x01))
338	count++;
339	/* We should already be in page 0, but to be safe... */
340	outb_p(E8390_PAGE0+E8390_START+E8390_NODMA, nic_base);
341
342	#ifdef NE8390_RW_BUGFIX
343	/* Handle the read-before-write bug the same way as the
344	Crynwr packet driver -- the NatSemi method doesn't work. */
345	outb_p(0x42, nic_base + EN0_RCNTLO);
346	outb_p(0, nic_base + EN0_RCNTHI);
347	outb_p(0xff, nic_base + EN0_RSARLO);
348	outb_p(0x00, nic_base + EN0_RSARHI);
349	#define NE_CMD 0x00
350	outb_p(E8390_RREAD+E8390_START, nic_base + NE_CMD);
351	/* Make certain that the dummy read has occurred. */
352	inb_p(0x61);
353	inb_p(0x61);
354	#endif
355
356	outb_p(count & 0xff, nic_base + EN0_RCNTLO);
357	outb_p(count >> 8, nic_base + EN0_RCNTHI);
358	outb_p(0x00, nic_base + EN0_RSARLO);
359	outb_p(start_page, nic_base + EN0_RSARHI);
360
361	outb_p(E8390_RWRITE+E8390_START, nic_base);
362	if (ei_status.word16) {
363	/* Use the 'rep' sequence for 16 bit boards. */
364	outsw(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count>>1);
365	} else {
366	outsb(nic_base - NIC_OFFSET + HP_DATAPORT, buf, count);
367	}
368
369	/* DON'T check for 'inb_p(EN0_ISR) & ENISR_RDC' here -- it's broken! */
370
371	/* This is for the ALPHA version only, remove for later releases. */
372	if (ei_debug > 0) { /* DMA termination address check... */
373	int high = inb_p(nic_base + EN0_RSARHI);
374	int low = inb_p(nic_base + EN0_RSARLO);
375	int addr = (high << 8) + low;
376	if ((start_page << 8) + count != addr)
377	printk("%s: TX Transfer address mismatch, %#4.4x vs. %#4.4x.\n",
378	dev->name, (start_page << 8) + count, addr);
379	}
380	outb_p(saved_config & (~HP_DATAON), nic_base - NIC_OFFSET + HP_CONFIGURE);
381	return;
382	}
383
384	/* This function resets the ethercard if something screws up. */
29f9f6d2	385	static void __init
1da177e4 LT	386	hp_init_card(struct net_device *dev)
	387	{
	388	int irq = dev->irq;
	389	NS8390_init(dev, 0);
	390	outb_p(irqmap[irq&0x0f] \| HP_RUN,
	391	dev->base_addr - NIC_OFFSET + HP_CONFIGURE);
	392	return;
	393	}
	394
	395	#ifdef MODULE
	396	#define MAX_HP_CARDS 4 /* Max number of HP cards per module */
	397	static struct net_device *dev_hp[MAX_HP_CARDS];
	398	static int io[MAX_HP_CARDS];
	399	static int irq[MAX_HP_CARDS];
	400
	401	module_param_array(io, int, NULL, 0);
	402	module_param_array(irq, int, NULL, 0);
	403	MODULE_PARM_DESC(io, "I/O base address(es)");
	404	MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)");
	405	MODULE_DESCRIPTION("HP PC-LAN ISA ethernet driver");
	406	MODULE_LICENSE("GPL");
	407
	408	/* This is set up so that only a single autoprobe takes place per call.
	409	ISA device autoprobes on a running machine are not recommended. */
29f9f6d2	410	int __init
1da177e4 LT	411	init_module(void)
	412	{
	413	struct net_device *dev;
	414	int this_dev, found = 0;
	415
	416	for (this_dev = 0; this_dev < MAX_HP_CARDS; this_dev++) {
	417	if (io[this_dev] == 0) {
	418	if (this_dev != 0) break; /* only autoprobe 1st one */
	419	printk(KERN_NOTICE "hp.c: Presently autoprobing (not recommended) for a single card.\n");
	420	}
	421	dev = alloc_ei_netdev();
	422	if (!dev)
	423	break;
	424	dev->irq = irq[this_dev];
	425	dev->base_addr = io[this_dev];
	426	if (do_hp_probe(dev) == 0) {
b1fc5505	427	dev_hp[found++] = dev;
b1fc5505	428	continue;
1da177e4 LT	429	}
	430	free_netdev(dev);
	431	printk(KERN_WARNING "hp.c: No HP card found (i/o = 0x%x).\n", io[this_dev]);
	432	break;
	433	}
	434	if (found)
	435	return 0;
	436	return -ENXIO;
	437	}
	438
64916f1e DV	439	static void cleanup_card(struct net_device *dev)
	440	{
	441	free_irq(dev->irq, dev);
	442	release_region(dev->base_addr - NIC_OFFSET, HP_IO_EXTENT);
	443	}
	444
afc8eb46	445	void __exit
1da177e4 LT	446	cleanup_module(void)
	447	{
	448	int this_dev;
	449
	450	for (this_dev = 0; this_dev < MAX_HP_CARDS; this_dev++) {
	451	struct net_device *dev = dev_hp[this_dev];
	452	if (dev) {
	453	unregister_netdev(dev);
	454	cleanup_card(dev);
	455	free_netdev(dev);
	456	}
	457	}
	458	}
	459	#endif /* MODULE */