[linux-2.6-block.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
 *
 * **********************
 */

#define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt

#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/memblock.h>
#include <linux/io.h>

#include "arcdevice.h"
#include "com20020.h"

/* 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;

	if (BUGLVL(D_NORMAL))
		pr_info("%s\n", "COM20020 ISA support (by David Woodhouse et al.)");

	ioaddr = dev->base_addr;
	if (!ioaddr) {
		arc_printk(D_NORMAL, dev, "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)")) {
		arc_printk(D_NORMAL, dev, "IO region %xh-%xh already allocated.\n",
			   ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
		return -ENXIO;
	}
	if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
		arc_printk(D_NORMAL, dev, "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.
		 */
		arc_printk(D_INIT_REASONS, dev, "intmask was %02Xh\n",
			   arcnet_inb(ioaddr, COM20020_REG_R_STATUS));
		arcnet_outb(0, ioaddr, COM20020_REG_W_INTMASK);
		airqmask = probe_irq_on();
		arcnet_outb(NORXflag, ioaddr, COM20020_REG_W_INTMASK);
		udelay(1);
		arcnet_outb(0, ioaddr, COM20020_REG_W_INTMASK);
		dev->irq = probe_irq_off(airqmask);

		if ((int)dev->irq <= 0) {
			arc_printk(D_INIT_REASONS, dev, "Autoprobe IRQ failed first time\n");
			airqmask = probe_irq_on();
			arcnet_outb(NORXflag, ioaddr, COM20020_REG_W_INTMASK);
			udelay(5);
			arcnet_outb(0, ioaddr, COM20020_REG_W_INTMASK);
			dev->irq = probe_irq_off(airqmask);
			if ((int)dev->irq <= 0) {
				arc_printk(D_NORMAL, dev, "Autoprobe IRQ failed.\n");
				err = -ENODEV;
				goto out;
			}
		}
	}

	lp->card_name = "ISA COM20020";

	err = com20020_found(dev, 0);
	if (err != 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_hw(io, int, ioport, 0);
module_param_hw(irq, int, irq, 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)
		arcnet_set_addr(dev, 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_arcdev(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_arcdev(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 */
		pr_info("Too many arguments\n");
		fallthrough;
	case 6:		/* Timeout */
		timeout = ints[6];
		fallthrough;
	case 5:		/* CKP value */
		clockp = ints[5];
		fallthrough;
	case 4:		/* Backplane flag */
		backplane = ints[4];
		fallthrough;
	case 3:		/* Node ID */
		node = ints[3];
		fallthrough;
	case 2:		/* IRQ */
		irq = ints[2];
		fallthrough;
	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	*/
05a24b23 JP	28
	29	#define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt
	30
1da177e4 LT	31	#include <linux/module.h>
	32	#include <linux/moduleparam.h>
	33	#include <linux/kernel.h>
	34	#include <linux/types.h>
	35	#include <linux/ioport.h>
1da177e4 LT	36	#include <linux/errno.h>
	37	#include <linux/delay.h>
	38	#include <linux/netdevice.h>
	39	#include <linux/init.h>
a6b7a407	40	#include <linux/interrupt.h>
57c8a661	41	#include <linux/memblock.h>
5e7ef913	42	#include <linux/io.h>
1da177e4	43
26c6d281 JP	44	#include "arcdevice.h"
	45	#include "com20020.h"
	46
f2f0a16b	47	/* We cannot (yet) probe for an IO mapped card, although we can check that
1da177e4 LT	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;
1da177e4 LT	56
72aeea48	57	if (BUGLVL(D_NORMAL))
05a24b23	58	pr_info("%s\n", "COM20020 ISA support (by David Woodhouse et al.)");
1da177e4 LT	59
	60	ioaddr = dev->base_addr;
	61	if (!ioaddr) {
a34c0932	62	arc_printk(D_NORMAL, dev, "No autoprobe (yet) for IO mapped cards; you must specify the base address!\n");
1da177e4 LT	63	return -ENODEV;
	64	}
	65	if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "arcnet (COM20020)")) {
a34c0932 JP	66	arc_printk(D_NORMAL, dev, "IO region %xh-%xh already allocated.\n",
a34c0932 JP	67	ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
1da177e4 LT	68	return -ENXIO;
1da177e4 LT	69	}
0fec6513	70	if (arcnet_inb(ioaddr, COM20020_REG_R_STATUS) == 0xFF) {
a34c0932	71	arc_printk(D_NORMAL, dev, "IO address %x empty\n", ioaddr);
1da177e4 LT	72	err = -ENODEV;
	73	goto out;
	74	}
	75	if (com20020_check(dev)) {
	76	err = -ENODEV;
	77	goto out;
	78	}
	79
	80	if (!dev->irq) {
	81	/* if we do this, we're sure to get an IRQ since the
	82	* card has just reset and the NORXflag is on until
	83	* we tell it to start receiving.
	84	*/
a34c0932	85	arc_printk(D_INIT_REASONS, dev, "intmask was %02Xh\n",
0fec6513 JP	86	arcnet_inb(ioaddr, COM20020_REG_R_STATUS));
0fec6513 JP	87	arcnet_outb(0, ioaddr, COM20020_REG_W_INTMASK);
1da177e4	88	airqmask = probe_irq_on();
0fec6513	89	arcnet_outb(NORXflag, ioaddr, COM20020_REG_W_INTMASK);
1da177e4	90	udelay(1);
0fec6513	91	arcnet_outb(0, ioaddr, COM20020_REG_W_INTMASK);
1da177e4 LT	92	dev->irq = probe_irq_off(airqmask);
1da177e4 LT	93
0a6efc78	94	if ((int)dev->irq <= 0) {
a34c0932	95	arc_printk(D_INIT_REASONS, dev, "Autoprobe IRQ failed first time\n");
1da177e4	96	airqmask = probe_irq_on();
0fec6513	97	arcnet_outb(NORXflag, ioaddr, COM20020_REG_W_INTMASK);
1da177e4	98	udelay(5);
0fec6513	99	arcnet_outb(0, ioaddr, COM20020_REG_W_INTMASK);
1da177e4	100	dev->irq = probe_irq_off(airqmask);
0a6efc78	101	if ((int)dev->irq <= 0) {
a34c0932	102	arc_printk(D_NORMAL, dev, "Autoprobe IRQ failed.\n");
1da177e4 LT	103	err = -ENODEV;
	104	goto out;
	105	}
	106	}
	107	}
	108
	109	lp->card_name = "ISA COM20020";
97464edd JP	110
	111	err = com20020_found(dev, 0);
	112	if (err != 0)
1da177e4 LT	113	goto out;
	114
	115	return 0;
	116
	117	out:
	118	release_region(ioaddr, ARCNET_TOTAL_SIZE);
	119	return err;
	120	}
	121
	122	static int node = 0;
	123	static int io = 0x0; /* <--- EDIT THESE LINES FOR YOUR CONFIGURATION */
	124	static int irq = 0; /* or use the insmod io= irq= shmem= options */
	125	static char device[9]; /* use eg. device="arc1" to change name */
	126	static int timeout = 3;
	127	static int backplane = 0;
	128	static int clockp = 0;
	129	static int clockm = 0;
	130
	131	module_param(node, int, 0);
06a5128a DH	132	module_param_hw(io, int, ioport, 0);
06a5128a DH	133	module_param_hw(irq, int, irq, 0);
1da177e4 LT	134	module_param_string(device, device, sizeof(device), 0);
	135	module_param(timeout, int, 0);
	136	module_param(backplane, int, 0);
	137	module_param(clockp, int, 0);
	138	module_param(clockm, int, 0);
	139
	140	MODULE_LICENSE("GPL");
	141
	142	static struct net_device *my_dev;
	143
	144	static int __init com20020_init(void)
	145	{
	146	struct net_device *dev;
	147	struct arcnet_local *lp;
	148
	149	dev = alloc_arcdev(device);
	150	if (!dev)
	151	return -ENOMEM;
	152
	153	if (node && node != 0xff)
13b5ffa0	154	arcnet_set_addr(dev, node);
1da177e4	155
a1799af4 SH	156	dev->netdev_ops = &com20020_netdev_ops;
a1799af4 SH	157
454d7c9b	158	lp = netdev_priv(dev);
1da177e4 LT	159	lp->backplane = backplane;
	160	lp->clockp = clockp & 7;
	161	lp->clockm = clockm & 3;
	162	lp->timeout = timeout & 3;
	163	lp->hw.owner = THIS_MODULE;
	164
	165	dev->base_addr = io;
	166	dev->irq = irq;
	167
	168	if (dev->irq == 2)
	169	dev->irq = 9;
	170
	171	if (com20020isa_probe(dev)) {
01365633	172	free_arcdev(dev);
1da177e4 LT	173	return -EIO;
	174	}
	175
	176	my_dev = dev;
	177	return 0;
	178	}
	179
	180	static void __exit com20020_exit(void)
	181	{
	182	unregister_netdev(my_dev);
	183	free_irq(my_dev->irq, my_dev);
	184	release_region(my_dev->base_addr, ARCNET_TOTAL_SIZE);
01365633	185	free_arcdev(my_dev);
1da177e4 LT	186	}
	187
	188	#ifndef MODULE
	189	static int __init com20020isa_setup(char *s)
	190	{
	191	int ints[8];
	192
	193	s = get_options(s, 8, ints);
	194	if (!ints[0])
	195	return 1;
	196
	197	switch (ints[0]) {
	198	default: /* ERROR */
05a24b23	199	pr_info("Too many arguments\n");
df561f66	200	fallthrough;
1da177e4 LT	201	case 6: /* Timeout */
1da177e4 LT	202	timeout = ints[6];
df561f66	203	fallthrough;
1da177e4 LT	204	case 5: /* CKP value */
1da177e4 LT	205	clockp = ints[5];
df561f66	206	fallthrough;
1da177e4 LT	207	case 4: /* Backplane flag */
1da177e4 LT	208	backplane = ints[4];
df561f66	209	fallthrough;
1da177e4 LT	210	case 3: /* Node ID */
1da177e4 LT	211	node = ints[3];
df561f66	212	fallthrough;
1da177e4 LT	213	case 2: /* IRQ */
1da177e4 LT	214	irq = ints[2];
df561f66	215	fallthrough;
1da177e4 LT	216	case 1: /* IO address */
	217	io = ints[1];
	218	}
	219	if (*s)
	220	snprintf(device, sizeof(device), "%s", s);
	221	return 1;
	222	}
	223
	224	__setup("com20020=", com20020isa_setup);
	225
	226	#endif /* MODULE */
	227
	228	module_init(com20020_init)
	229	module_exit(com20020_exit)