[deliverable/linux.git] / drivers / net / arcnet / com20020-isa.c

/*
 * Linux ARCnet driver - COM20020 chipset support
 *
 * Written 1997 by David Woodhouse.
 * Written 1994-1999 by Avery Pennarun.
 * Written 1999-2000 by Martin Mares <mj@ucw.cz>.
 * Derived from skeleton.c by Donald Becker.
 *
 * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
 *  for sponsoring the further development of this driver.
 *
 * **********************
 *
 * The original copyright of skeleton.c was as follows:
 *
 * skeleton.c Written 1993 by Donald Becker.
 * Copyright 1993 United States Government as represented by the
 * Director, National Security Agency.  This software may only be used
 * and distributed according to the terms of the GNU General Public License as
 * modified by SRC, incorporated herein by reference.
 *
 * **********************
 *
 * For more details, see drivers/net/arcnet.c
 *
 * **********************
 */
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/bootmem.h>
#include <linux/arcdevice.h>
#include <linux/com20020.h>

#include <asm/io.h>

#define VERSION "arcnet: COM20020 ISA support (by David Woodhouse et al.)\n"

/*
 * We cannot (yet) probe for an IO mapped card, although we can check that
 * it's where we were told it was, and even do autoirq.
 */
static int __init com20020isa_probe(struct net_device *dev)
{
	int ioaddr;
	unsigned long airqmask;
	struct arcnet_local *lp = netdev_priv(dev);
	int err;

	BUGLVL(D_NORMAL) printk(VERSION);

	ioaddr = dev->base_addr;
	if (!ioaddr) {
		BUGMSG(D_NORMAL, "No autoprobe (yet) for IO mapped cards; you must specify the base address!\n");
		return -ENODEV;
	}
	if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "arcnet (COM20020)")) {
		BUGMSG(D_NORMAL, "IO region %xh-%xh already allocated.\n",
		       ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
		return -ENXIO;
	}
	if (ASTATUS() == 0xFF) {
		BUGMSG(D_NORMAL, "IO address %x empty\n", ioaddr);
		err = -ENODEV;
		goto out;
	}
	if (com20020_check(dev)) {
		err = -ENODEV;
		goto out;
	}

	if (!dev->irq) {
		/* if we do this, we're sure to get an IRQ since the
		 * card has just reset and the NORXflag is on until
		 * we tell it to start receiving.
		 */
		BUGMSG(D_INIT_REASONS, "intmask was %02Xh\n", inb(_INTMASK));
		outb(0, _INTMASK);
		airqmask = probe_irq_on();
		outb(NORXflag, _INTMASK);
		udelay(1);
		outb(0, _INTMASK);
		dev->irq = probe_irq_off(airqmask);

		if ((int)dev->irq <= 0) {
			BUGMSG(D_INIT_REASONS, "Autoprobe IRQ failed first time\n");
			airqmask = probe_irq_on();
			outb(NORXflag, _INTMASK);
			udelay(5);
			outb(0, _INTMASK);
			dev->irq = probe_irq_off(airqmask);
			if ((int)dev->irq <= 0) {
				BUGMSG(D_NORMAL, "Autoprobe IRQ failed.\n");
				err = -ENODEV;
				goto out;
			}
		}
	}

	lp->card_name = "ISA COM20020";
	if ((err = com20020_found(dev, 0)) != 0)
		goto out;

	return 0;

out:
	release_region(ioaddr, ARCNET_TOTAL_SIZE);
	return err;
}

static int node = 0;
static int io = 0x0;		/* <--- EDIT THESE LINES FOR YOUR CONFIGURATION */
static int irq = 0;		/* or use the insmod io= irq= shmem= options */
static char device[9];		/* use eg. device="arc1" to change name */
static int timeout = 3;
static int backplane = 0;
static int clockp = 0;
static int clockm = 0;

module_param(node, int, 0);
module_param(io, int, 0);
module_param(irq, int, 0);
module_param_string(device, device, sizeof(device), 0);
module_param(timeout, int, 0);
module_param(backplane, int, 0);
module_param(clockp, int, 0);
module_param(clockm, int, 0);

MODULE_LICENSE("GPL");

static struct net_device *my_dev;

static int __init com20020_init(void)
{
	struct net_device *dev;
	struct arcnet_local *lp;

	dev = alloc_arcdev(device);
	if (!dev)
		return -ENOMEM;

	if (node && node != 0xff)
		dev->dev_addr[0] = node;

	dev->netdev_ops = &com20020_netdev_ops;

	lp = netdev_priv(dev);
	lp->backplane = backplane;
	lp->clockp = clockp & 7;
	lp->clockm = clockm & 3;
	lp->timeout = timeout & 3;
	lp->hw.owner = THIS_MODULE;

	dev->base_addr = io;
	dev->irq = irq;

	if (dev->irq == 2)
		dev->irq = 9;

	if (com20020isa_probe(dev)) {
		free_netdev(dev);
		return -EIO;
	}

	my_dev = dev;
	return 0;
}

static void __exit com20020_exit(void)
{
	unregister_netdev(my_dev);
	free_irq(my_dev->irq, my_dev);
	release_region(my_dev->base_addr, ARCNET_TOTAL_SIZE);
	free_netdev(my_dev);
}

#ifndef MODULE
static int __init com20020isa_setup(char *s)
{
	int ints[8];

	s = get_options(s, 8, ints);
	if (!ints[0])
		return 1;

	switch (ints[0]) {
	default:		/* ERROR */
		printk("com90xx: Too many arguments.\n");
	case 6:		/* Timeout */
		timeout = ints[6];
	case 5:		/* CKP value */
		clockp = ints[5];
	case 4:		/* Backplane flag */
		backplane = ints[4];
	case 3:		/* Node ID */
		node = ints[3];
	case 2:		/* IRQ */
		irq = ints[2];
	case 1:		/* IO address */
		io = ints[1];
	}
	if (*s)
		snprintf(device, sizeof(device), "%s", s);
	return 1;
}

__setup("com20020=", com20020isa_setup);

#endif				/* MODULE */

module_init(com20020_init)
module_exit(com20020_exit)
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	2	* Linux ARCnet driver - COM20020 chipset support
cb334648	3	*
1da177e4 LT	4	* Written 1997 by David Woodhouse.
	5	* Written 1994-1999 by Avery Pennarun.
	6	* Written 1999-2000 by Martin Mares <mj@ucw.cz>.
	7	* Derived from skeleton.c by Donald Becker.
	8	*
	9	* Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
	10	* for sponsoring the further development of this driver.
	11	*
	12	* **********************
	13	*
	14	* The original copyright of skeleton.c was as follows:
	15	*
	16	* skeleton.c Written 1993 by Donald Becker.
	17	* Copyright 1993 United States Government as represented by the
	18	* Director, National Security Agency. This software may only be used
	19	* and distributed according to the terms of the GNU General Public License as
	20	* modified by SRC, incorporated herein by reference.
	21	*
	22	* **********************
	23	*
	24	* For more details, see drivers/net/arcnet.c
	25	*
	26	* **********************
	27	*/
	28	#include <linux/module.h>
	29	#include <linux/moduleparam.h>
	30	#include <linux/kernel.h>
	31	#include <linux/types.h>
	32	#include <linux/ioport.h>
1da177e4 LT	33	#include <linux/errno.h>
	34	#include <linux/delay.h>
	35	#include <linux/netdevice.h>
	36	#include <linux/init.h>
a6b7a407	37	#include <linux/interrupt.h>
1da177e4 LT	38	#include <linux/bootmem.h>
	39	#include <linux/arcdevice.h>
	40	#include <linux/com20020.h>
	41
	42	#include <asm/io.h>
	43
	44	#define VERSION "arcnet: COM20020 ISA support (by David Woodhouse et al.)\n"
	45
1da177e4 LT	46	/*
	47	* We cannot (yet) probe for an IO mapped card, although we can check that
	48	* it's where we were told it was, and even do autoirq.
	49	*/
	50	static int __init com20020isa_probe(struct net_device *dev)
	51	{
	52	int ioaddr;
	53	unsigned long airqmask;
454d7c9b	54	struct arcnet_local *lp = netdev_priv(dev);
1da177e4 LT	55	int err;
	56
	57	BUGLVL(D_NORMAL) printk(VERSION);
	58
	59	ioaddr = dev->base_addr;
	60	if (!ioaddr) {
3b4e5551	61	BUGMSG(D_NORMAL, "No autoprobe (yet) for IO mapped cards; you must specify the base address!\n");
1da177e4 LT	62	return -ENODEV;
	63	}
	64	if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "arcnet (COM20020)")) {
	65	BUGMSG(D_NORMAL, "IO region %xh-%xh already allocated.\n",
	66	ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
	67	return -ENXIO;
	68	}
	69	if (ASTATUS() == 0xFF) {
	70	BUGMSG(D_NORMAL, "IO address %x empty\n", ioaddr);
	71	err = -ENODEV;
	72	goto out;
	73	}
	74	if (com20020_check(dev)) {
	75	err = -ENODEV;
	76	goto out;
	77	}
	78
	79	if (!dev->irq) {
	80	/* if we do this, we're sure to get an IRQ since the
	81	* card has just reset and the NORXflag is on until
	82	* we tell it to start receiving.
	83	*/
	84	BUGMSG(D_INIT_REASONS, "intmask was %02Xh\n", inb(_INTMASK));
	85	outb(0, _INTMASK);
	86	airqmask = probe_irq_on();
	87	outb(NORXflag, _INTMASK);
	88	udelay(1);
	89	outb(0, _INTMASK);
	90	dev->irq = probe_irq_off(airqmask);
	91
0a6efc78	92	if ((int)dev->irq <= 0) {
1da177e4 LT	93	BUGMSG(D_INIT_REASONS, "Autoprobe IRQ failed first time\n");
	94	airqmask = probe_irq_on();
	95	outb(NORXflag, _INTMASK);
	96	udelay(5);
	97	outb(0, _INTMASK);
	98	dev->irq = probe_irq_off(airqmask);
0a6efc78	99	if ((int)dev->irq <= 0) {
1da177e4 LT	100	BUGMSG(D_NORMAL, "Autoprobe IRQ failed.\n");
	101	err = -ENODEV;
	102	goto out;
	103	}
	104	}
	105	}
	106
	107	lp->card_name = "ISA COM20020";
	108	if ((err = com20020_found(dev, 0)) != 0)
	109	goto out;
	110
	111	return 0;
	112
	113	out:
	114	release_region(ioaddr, ARCNET_TOTAL_SIZE);
	115	return err;
	116	}
	117
	118	static int node = 0;
	119	static int io = 0x0; /* <--- EDIT THESE LINES FOR YOUR CONFIGURATION */
	120	static int irq = 0; /* or use the insmod io= irq= shmem= options */
	121	static char device[9]; /* use eg. device="arc1" to change name */
	122	static int timeout = 3;
	123	static int backplane = 0;
	124	static int clockp = 0;
	125	static int clockm = 0;
	126
	127	module_param(node, int, 0);
	128	module_param(io, int, 0);
	129	module_param(irq, int, 0);
	130	module_param_string(device, device, sizeof(device), 0);
	131	module_param(timeout, int, 0);
	132	module_param(backplane, int, 0);
	133	module_param(clockp, int, 0);
	134	module_param(clockm, int, 0);
	135
	136	MODULE_LICENSE("GPL");
	137
	138	static struct net_device *my_dev;
	139
	140	static int __init com20020_init(void)
	141	{
	142	struct net_device *dev;
	143	struct arcnet_local *lp;
	144
	145	dev = alloc_arcdev(device);
	146	if (!dev)
	147	return -ENOMEM;
	148
	149	if (node && node != 0xff)
	150	dev->dev_addr[0] = node;
	151
a1799af4 SH	152	dev->netdev_ops = &com20020_netdev_ops;
a1799af4 SH	153
454d7c9b	154	lp = netdev_priv(dev);
1da177e4 LT	155	lp->backplane = backplane;
	156	lp->clockp = clockp & 7;
	157	lp->clockm = clockm & 3;
	158	lp->timeout = timeout & 3;
	159	lp->hw.owner = THIS_MODULE;
	160
	161	dev->base_addr = io;
	162	dev->irq = irq;
	163
	164	if (dev->irq == 2)
	165	dev->irq = 9;
	166
	167	if (com20020isa_probe(dev)) {
	168	free_netdev(dev);
	169	return -EIO;
	170	}
	171
	172	my_dev = dev;
	173	return 0;
	174	}
	175
	176	static void __exit com20020_exit(void)
	177	{
	178	unregister_netdev(my_dev);
	179	free_irq(my_dev->irq, my_dev);
	180	release_region(my_dev->base_addr, ARCNET_TOTAL_SIZE);
	181	free_netdev(my_dev);
	182	}
	183
	184	#ifndef MODULE
	185	static int __init com20020isa_setup(char *s)
	186	{
	187	int ints[8];
	188
	189	s = get_options(s, 8, ints);
	190	if (!ints[0])
	191	return 1;
	192
	193	switch (ints[0]) {
	194	default: /* ERROR */
	195	printk("com90xx: Too many arguments.\n");
	196	case 6: /* Timeout */
	197	timeout = ints[6];
	198	case 5: /* CKP value */
	199	clockp = ints[5];
	200	case 4: /* Backplane flag */
	201	backplane = ints[4];
	202	case 3: /* Node ID */
	203	node = ints[3];
	204	case 2: /* IRQ */
	205	irq = ints[2];
	206	case 1: /* IO address */
	207	io = ints[1];
	208	}
	209	if (*s)
	210	snprintf(device, sizeof(device), "%s", s);
	211	return 1;
	212	}
	213
	214	__setup("com20020=", com20020isa_setup);
	215
	216	#endif /* MODULE */
	217
	218	module_init(com20020_init)
219	module_exit(com20020_exit)