[linux-2.6-block.git] / drivers / net / arcnet / com90io.c

/*
 * Linux ARCnet driver - COM90xx chipset (IO-mapped buffers)
 * 
 * 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/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/bootmem.h>
#include <linux/init.h>
#include <asm/io.h>
#include <linux/arcdevice.h>


#define VERSION "arcnet: COM90xx IO-mapped mode support (by David Woodhouse et el.)\n"


/* Internal function declarations */

static int com90io_found(struct net_device *dev);
static void com90io_command(struct net_device *dev, int command);
static int com90io_status(struct net_device *dev);
static void com90io_setmask(struct net_device *dev, int mask);
static int com90io_reset(struct net_device *dev, int really_reset);
static void com90io_copy_to_card(struct net_device *dev, int bufnum, int offset,
				 void *buf, int count);
static void com90io_copy_from_card(struct net_device *dev, int bufnum, int offset,
				   void *buf, int count);


/* Handy defines for ARCnet specific stuff */

/* The number of low I/O ports used by the card. */
#define ARCNET_TOTAL_SIZE 16

/* COM 9026 controller chip --> ARCnet register addresses */
#define _INTMASK (ioaddr+0)	/* writable */
#define _STATUS  (ioaddr+0)	/* readable */
#define _COMMAND (ioaddr+1)	/* writable, returns random vals on read (?) */
#define _RESET  (ioaddr+8)	/* software reset (on read) */
#define _MEMDATA  (ioaddr+12)	/* Data port for IO-mapped memory */
#define _ADDR_HI  (ioaddr+15)	/* Control registers for said */
#define _ADDR_LO  (ioaddr+14)
#define _CONFIG  (ioaddr+2)	/* Configuration register */

#undef ASTATUS
#undef ACOMMAND
#undef AINTMASK

#define ASTATUS()	inb(_STATUS)
#define ACOMMAND(cmd) outb((cmd),_COMMAND)
#define AINTMASK(msk)	outb((msk),_INTMASK)
#define SETCONF() 	outb((lp->config),_CONFIG)


/****************************************************************************
 *                                                                          *
 * IO-mapped operation routines                                             *
 *                                                                          *
 ****************************************************************************/

#undef ONE_AT_A_TIME_TX
#undef ONE_AT_A_TIME_RX

static u_char get_buffer_byte(struct net_device *dev, unsigned offset)
{
	int ioaddr = dev->base_addr;

	outb(offset >> 8, _ADDR_HI);
	outb(offset & 0xff, _ADDR_LO);

	return inb(_MEMDATA);
}

#ifdef ONE_AT_A_TIME_TX
static void put_buffer_byte(struct net_device *dev, unsigned offset, u_char datum)
{
	int ioaddr = dev->base_addr;

	outb(offset >> 8, _ADDR_HI);
	outb(offset & 0xff, _ADDR_LO);

	outb(datum, _MEMDATA);
}

#endif


static void get_whole_buffer(struct net_device *dev, unsigned offset, unsigned length, char *dest)
{
	int ioaddr = dev->base_addr;

	outb((offset >> 8) | AUTOINCflag, _ADDR_HI);
	outb(offset & 0xff, _ADDR_LO);

	while (length--)
#ifdef ONE_AT_A_TIME_RX
		*(dest++) = get_buffer_byte(dev, offset++);
#else
		*(dest++) = inb(_MEMDATA);
#endif
}

static void put_whole_buffer(struct net_device *dev, unsigned offset, unsigned length, char *dest)
{
	int ioaddr = dev->base_addr;

	outb((offset >> 8) | AUTOINCflag, _ADDR_HI);
	outb(offset & 0xff, _ADDR_LO);

	while (length--)
#ifdef ONE_AT_A_TIME_TX
		put_buffer_byte(dev, offset++, *(dest++));
#else
		outb(*(dest++), _MEMDATA);
#endif
}

/*
 * We cannot probe for an IO mapped card either, although we can check that
 * it's where we were told it was, and even autoirq
 */
static int __init com90io_probe(struct net_device *dev)
{
	int ioaddr = dev->base_addr, status;
	unsigned long airqmask;

	BUGLVL(D_NORMAL) printk(VERSION);
	BUGLVL(D_NORMAL) printk("E-mail me if you actually test this driver, please!\n");

	if (!ioaddr) {
		BUGMSG(D_NORMAL, "No autoprobe for IO mapped cards; you "
		       "must specify the base address!\n");
		return -ENODEV;
	}
	if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "com90io probe")) {
		BUGMSG(D_INIT_REASONS, "IO request_region %x-%x failed.\n",
		       ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
		return -ENXIO;
	}
	if (ASTATUS() == 0xFF) {
		BUGMSG(D_INIT_REASONS, "IO address %x empty\n", ioaddr);
		goto err_out;
	}
	inb(_RESET);
	mdelay(RESETtime);

	status = ASTATUS();

	if ((status & 0x9D) != (NORXflag | RECONflag | TXFREEflag | RESETflag)) {
		BUGMSG(D_INIT_REASONS, "Status invalid (%Xh).\n", status);
		goto err_out;
	}
	BUGMSG(D_INIT_REASONS, "Status after reset: %X\n", status);

	ACOMMAND(CFLAGScmd | RESETclear | CONFIGclear);

	BUGMSG(D_INIT_REASONS, "Status after reset acknowledged: %X\n", status);

	status = ASTATUS();

	if (status & RESETflag) {
		BUGMSG(D_INIT_REASONS, "Eternal reset (status=%Xh)\n", status);
		goto err_out;
	}
	outb((0x16 | IOMAPflag) & ~ENABLE16flag, _CONFIG);

	/* Read first loc'n of memory */

	outb(AUTOINCflag, _ADDR_HI);
	outb(0, _ADDR_LO);

	if ((status = inb(_MEMDATA)) != 0xd1) {
		BUGMSG(D_INIT_REASONS, "Signature byte not found"
		       " (%Xh instead).\n", status);
		goto err_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.
		 */

		airqmask = probe_irq_on();
		outb(NORXflag, _INTMASK);
		udelay(1);
		outb(0, _INTMASK);
		dev->irq = probe_irq_off(airqmask);

		if (dev->irq <= 0) {
			BUGMSG(D_INIT_REASONS, "Autoprobe IRQ failed\n");
			goto err_out;
		}
	}
	release_region(ioaddr, ARCNET_TOTAL_SIZE); /* end of probing */
	return com90io_found(dev);

err_out:
	release_region(ioaddr, ARCNET_TOTAL_SIZE);
	return -ENODEV;
}


/* Set up the struct net_device associated with this card.  Called after
 * probing succeeds.
 */
static int __init com90io_found(struct net_device *dev)
{
	struct arcnet_local *lp;
	int ioaddr = dev->base_addr;
	int err;

	/* Reserve the irq */
	if (request_irq(dev->irq, arcnet_interrupt, 0, "arcnet (COM90xx-IO)", dev)) {
		BUGMSG(D_NORMAL, "Can't get IRQ %d!\n", dev->irq);
		return -ENODEV;
	}
	/* Reserve the I/O region */
	if (!request_region(dev->base_addr, ARCNET_TOTAL_SIZE, "arcnet (COM90xx-IO)")) {
		free_irq(dev->irq, dev);
		return -EBUSY;
	}

	lp = netdev_priv(dev);
	lp->card_name = "COM90xx I/O";
	lp->hw.command = com90io_command;
	lp->hw.status = com90io_status;
	lp->hw.intmask = com90io_setmask;
	lp->hw.reset = com90io_reset;
	lp->hw.owner = THIS_MODULE;
	lp->hw.copy_to_card = com90io_copy_to_card;
	lp->hw.copy_from_card = com90io_copy_from_card;

	lp->config = (0x16 | IOMAPflag) & ~ENABLE16flag;
	SETCONF();

	/* get and check the station ID from offset 1 in shmem */

	dev->dev_addr[0] = get_buffer_byte(dev, 1);

	err = register_netdev(dev);
	if (err) {
		outb((inb(_CONFIG) & ~IOMAPflag), _CONFIG);
		free_irq(dev->irq, dev);
		release_region(dev->base_addr, ARCNET_TOTAL_SIZE);
		return err;
	}

	BUGMSG(D_NORMAL, "COM90IO: station %02Xh found at %03lXh, IRQ %d.\n",
	       dev->dev_addr[0], dev->base_addr, dev->irq);

	return 0;
}


/*
 * Do a hardware reset on the card, and set up necessary registers.
 *
 * This should be called as little as possible, because it disrupts the
 * token on the network (causes a RECON) and requires a significant delay.
 *
 * However, it does make sure the card is in a defined state.
 */
static int com90io_reset(struct net_device *dev, int really_reset)
{
	struct arcnet_local *lp = netdev_priv(dev);
	short ioaddr = dev->base_addr;

	BUGMSG(D_INIT, "Resetting %s (status=%02Xh)\n", dev->name, ASTATUS());

	if (really_reset) {
		/* reset the card */
		inb(_RESET);
		mdelay(RESETtime);
	}
	/* Set the thing to IO-mapped, 8-bit  mode */
	lp->config = (0x1C | IOMAPflag) & ~ENABLE16flag;
	SETCONF();

	ACOMMAND(CFLAGScmd | RESETclear);	/* clear flags & end reset */
	ACOMMAND(CFLAGScmd | CONFIGclear);

	/* verify that the ARCnet signature byte is present */
	if (get_buffer_byte(dev, 0) != TESTvalue) {
		BUGMSG(D_NORMAL, "reset failed: TESTvalue not present.\n");
		return 1;
	}
	/* enable extended (512-byte) packets */
	ACOMMAND(CONFIGcmd | EXTconf);

	/* done!  return success. */
	return 0;
}


static void com90io_command(struct net_device *dev, int cmd)
{
	short ioaddr = dev->base_addr;

	ACOMMAND(cmd);
}


static int com90io_status(struct net_device *dev)
{
	short ioaddr = dev->base_addr;

	return ASTATUS();
}


static void com90io_setmask(struct net_device *dev, int mask)
{
	short ioaddr = dev->base_addr;

	AINTMASK(mask);
}

static void com90io_copy_to_card(struct net_device *dev, int bufnum, int offset,
				 void *buf, int count)
{
	TIME("put_whole_buffer", count, put_whole_buffer(dev, bufnum * 512 + offset, count, buf));
}


static void com90io_copy_from_card(struct net_device *dev, int bufnum, int offset,
				   void *buf, int count)
{
	TIME("get_whole_buffer", count, get_whole_buffer(dev, bufnum * 512 + offset, count, buf));
}

static int io;			/* use the insmod io= irq= shmem= options */
static int irq;
static char device[9];		/* use eg. device=arc1 to change name */

module_param(io, int, 0);
module_param(irq, int, 0);
module_param_string(device, device, sizeof(device), 0);
MODULE_LICENSE("GPL");

#ifndef MODULE
static int __init com90io_setup(char *s)
{
	int ints[4];
	s = get_options(s, 4, ints);
	if (!ints[0])
		return 0;
	switch (ints[0]) {
	default:		/* ERROR */
		printk("com90io: Too many arguments.\n");
	case 2:		/* IRQ */
		irq = ints[2];
	case 1:		/* IO address */
		io = ints[1];
	}
	if (*s)
		snprintf(device, sizeof(device), "%s", s);
	return 1;
}
__setup("com90io=", com90io_setup);
#endif

static struct net_device *my_dev;

static int __init com90io_init(void)
{
	struct net_device *dev;
	int err;

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

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

	err = com90io_probe(dev);

	if (err) {
		free_netdev(dev);
		return err;
	}

	my_dev = dev;
	return 0;
}

static void __exit com90io_exit(void)
{
	struct net_device *dev = my_dev;
	int ioaddr = dev->base_addr;

	unregister_netdev(dev);

	/* Set the thing back to MMAP mode, in case the old driver is loaded later */
	outb((inb(_CONFIG) & ~IOMAPflag), _CONFIG);

	free_irq(dev->irq, dev);
	release_region(dev->base_addr, ARCNET_TOTAL_SIZE);
	free_netdev(dev);
}

module_init(com90io_init)
module_exit(com90io_exit)
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Linux ARCnet driver - COM90xx chipset (IO-mapped buffers)
	3	*
	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/kernel.h>
	29	#include <linux/module.h>
	30	#include <linux/moduleparam.h>
	31	#include <linux/ioport.h>
1da177e4 LT	32	#include <linux/delay.h>
	33	#include <linux/netdevice.h>
	34	#include <linux/bootmem.h>
	35	#include <linux/init.h>
	36	#include <asm/io.h>
	37	#include <linux/arcdevice.h>
	38
	39
	40	#define VERSION "arcnet: COM90xx IO-mapped mode support (by David Woodhouse et el.)\n"
	41
	42
	43	/* Internal function declarations */
	44
	45	static int com90io_found(struct net_device *dev);
	46	static void com90io_command(struct net_device *dev, int command);
	47	static int com90io_status(struct net_device *dev);
	48	static void com90io_setmask(struct net_device *dev, int mask);
	49	static int com90io_reset(struct net_device *dev, int really_reset);
	50	static void com90io_copy_to_card(struct net_device *dev, int bufnum, int offset,
	51	void *buf, int count);
	52	static void com90io_copy_from_card(struct net_device *dev, int bufnum, int offset,
	53	void *buf, int count);
	54
	55
	56	/* Handy defines for ARCnet specific stuff */
	57
	58	/* The number of low I/O ports used by the card. */
	59	#define ARCNET_TOTAL_SIZE 16
	60
	61	/* COM 9026 controller chip --> ARCnet register addresses */
	62	#define _INTMASK (ioaddr+0) /* writable */
	63	#define _STATUS (ioaddr+0) /* readable */
	64	#define _COMMAND (ioaddr+1) /* writable, returns random vals on read (?) */
	65	#define _RESET (ioaddr+8) /* software reset (on read) */
	66	#define _MEMDATA (ioaddr+12) /* Data port for IO-mapped memory */
	67	#define _ADDR_HI (ioaddr+15) /* Control registers for said */
	68	#define _ADDR_LO (ioaddr+14)
	69	#define _CONFIG (ioaddr+2) /* Configuration register */
	70
	71	#undef ASTATUS
	72	#undef ACOMMAND
	73	#undef AINTMASK
	74
	75	#define ASTATUS() inb(_STATUS)
	76	#define ACOMMAND(cmd) outb((cmd),_COMMAND)
	77	#define AINTMASK(msk) outb((msk),_INTMASK)
	78	#define SETCONF() outb((lp->config),_CONFIG)
	79
	80
	81	/****************************************************************************
	82	* *
	83	* IO-mapped operation routines *
	84	* *
	85	****************************************************************************/
	86
	87	#undef ONE_AT_A_TIME_TX
	88	#undef ONE_AT_A_TIME_RX
	89
	90	static u_char get_buffer_byte(struct net_device *dev, unsigned offset)
	91	{
	92	int ioaddr = dev->base_addr;
	93
	94	outb(offset >> 8, _ADDR_HI);
	95	outb(offset & 0xff, _ADDR_LO);
96
97	return inb(_MEMDATA);
98	}
99
100	#ifdef ONE_AT_A_TIME_TX
101	static void put_buffer_byte(struct net_device *dev, unsigned offset, u_char datum)
102	{
103	int ioaddr = dev->base_addr;
104
105	outb(offset >> 8, _ADDR_HI);
106	outb(offset & 0xff, _ADDR_LO);
107
108	outb(datum, _MEMDATA);
109	}
110
111	#endif
112
113
114	static void get_whole_buffer(struct net_device dev, unsigned offset, unsigned length, char dest)
115	{
116	int ioaddr = dev->base_addr;
117
118	outb((offset >> 8) \| AUTOINCflag, _ADDR_HI);
119	outb(offset & 0xff, _ADDR_LO);
120
121	while (length--)
122	#ifdef ONE_AT_A_TIME_RX
123	*(dest++) = get_buffer_byte(dev, offset++);
124	#else
125	*(dest++) = inb(_MEMDATA);
126	#endif
127	}
128
129	static void put_whole_buffer(struct net_device dev, unsigned offset, unsigned length, char dest)
130	{
131	int ioaddr = dev->base_addr;
132
133	outb((offset >> 8) \| AUTOINCflag, _ADDR_HI);
134	outb(offset & 0xff, _ADDR_LO);
135
136	while (length--)
137	#ifdef ONE_AT_A_TIME_TX
138	put_buffer_byte(dev, offset++, *(dest++));
139	#else
140	outb(*(dest++), _MEMDATA);
141	#endif
142	}
143
144	/*
145	* We cannot probe for an IO mapped card either, although we can check that
146	* it's where we were told it was, and even autoirq
147	*/
148	static int __init com90io_probe(struct net_device *dev)
149	{
150	int ioaddr = dev->base_addr, status;
151	unsigned long airqmask;
152
153	BUGLVL(D_NORMAL) printk(VERSION);
154	BUGLVL(D_NORMAL) printk("E-mail me if you actually test this driver, please!\n");
155
156	if (!ioaddr) {
157	BUGMSG(D_NORMAL, "No autoprobe for IO mapped cards; you "
158	"must specify the base address!\n");
159	return -ENODEV;
160	}
161	if (!request_region(ioaddr, ARCNET_TOTAL_SIZE, "com90io probe")) {
fb911ee8	162	BUGMSG(D_INIT_REASONS, "IO request_region %x-%x failed.\n",
1da177e4 LT	163	ioaddr, ioaddr + ARCNET_TOTAL_SIZE - 1);
	164	return -ENXIO;
	165	}
	166	if (ASTATUS() == 0xFF) {
	167	BUGMSG(D_INIT_REASONS, "IO address %x empty\n", ioaddr);
	168	goto err_out;
	169	}
	170	inb(_RESET);
	171	mdelay(RESETtime);
	172
	173	status = ASTATUS();
	174
	175	if ((status & 0x9D) != (NORXflag \| RECONflag \| TXFREEflag \| RESETflag)) {
	176	BUGMSG(D_INIT_REASONS, "Status invalid (%Xh).\n", status);
	177	goto err_out;
	178	}
	179	BUGMSG(D_INIT_REASONS, "Status after reset: %X\n", status);
	180
	181	ACOMMAND(CFLAGScmd \| RESETclear \| CONFIGclear);
	182
	183	BUGMSG(D_INIT_REASONS, "Status after reset acknowledged: %X\n", status);
	184
	185	status = ASTATUS();
	186
	187	if (status & RESETflag) {
	188	BUGMSG(D_INIT_REASONS, "Eternal reset (status=%Xh)\n", status);
	189	goto err_out;
	190	}
	191	outb((0x16 \| IOMAPflag) & ~ENABLE16flag, _CONFIG);
	192
	193	/* Read first loc'n of memory */
	194
	195	outb(AUTOINCflag, _ADDR_HI);
	196	outb(0, _ADDR_LO);
	197
	198	if ((status = inb(_MEMDATA)) != 0xd1) {
	199	BUGMSG(D_INIT_REASONS, "Signature byte not found"
	200	" (%Xh instead).\n", status);
	201	goto err_out;
	202	}
	203	if (!dev->irq) {
	204	/*
	205	* if we do this, we're sure to get an IRQ since the
	206	* card has just reset and the NORXflag is on until
	207	* we tell it to start receiving.
	208	*/
	209
	210	airqmask = probe_irq_on();
	211	outb(NORXflag, _INTMASK);
	212	udelay(1);
	213	outb(0, _INTMASK);
	214	dev->irq = probe_irq_off(airqmask);
	215
	216	if (dev->irq <= 0) {
	217	BUGMSG(D_INIT_REASONS, "Autoprobe IRQ failed\n");
	218	goto err_out;
	219	}
	220	}
	221	release_region(ioaddr, ARCNET_TOTAL_SIZE); /* end of probing */
	222	return com90io_found(dev);
	223
	224	err_out:
	225	release_region(ioaddr, ARCNET_TOTAL_SIZE);
	226	return -ENODEV;
227	}
228
229
230	/* Set up the struct net_device associated with this card. Called after
231	* probing succeeds.
232	*/
233	static int __init com90io_found(struct net_device *dev)
234	{
235	struct arcnet_local *lp;
236	int ioaddr = dev->base_addr;
237	int err;
238
239	/* Reserve the irq */
a0607fd3	240	if (request_irq(dev->irq, arcnet_interrupt, 0, "arcnet (COM90xx-IO)", dev)) {
1da177e4 LT	241	BUGMSG(D_NORMAL, "Can't get IRQ %d!\n", dev->irq);
	242	return -ENODEV;
	243	}
fb911ee8	244	/* Reserve the I/O region */
1da177e4 LT	245	if (!request_region(dev->base_addr, ARCNET_TOTAL_SIZE, "arcnet (COM90xx-IO)")) {
	246	free_irq(dev->irq, dev);
	247	return -EBUSY;
	248	}
	249
454d7c9b	250	lp = netdev_priv(dev);
1da177e4 LT	251	lp->card_name = "COM90xx I/O";
	252	lp->hw.command = com90io_command;
	253	lp->hw.status = com90io_status;
	254	lp->hw.intmask = com90io_setmask;
	255	lp->hw.reset = com90io_reset;
	256	lp->hw.owner = THIS_MODULE;
	257	lp->hw.copy_to_card = com90io_copy_to_card;
	258	lp->hw.copy_from_card = com90io_copy_from_card;
	259
	260	lp->config = (0x16 \| IOMAPflag) & ~ENABLE16flag;
	261	SETCONF();
	262
	263	/* get and check the station ID from offset 1 in shmem */
	264
	265	dev->dev_addr[0] = get_buffer_byte(dev, 1);
	266
	267	err = register_netdev(dev);
	268	if (err) {
	269	outb((inb(_CONFIG) & ~IOMAPflag), _CONFIG);
	270	free_irq(dev->irq, dev);
	271	release_region(dev->base_addr, ARCNET_TOTAL_SIZE);
	272	return err;
	273	}
	274
	275	BUGMSG(D_NORMAL, "COM90IO: station %02Xh found at %03lXh, IRQ %d.\n",
	276	dev->dev_addr[0], dev->base_addr, dev->irq);
	277
	278	return 0;
	279	}
	280
	281
	282	/*
	283	* Do a hardware reset on the card, and set up necessary registers.
	284	*
	285	* This should be called as little as possible, because it disrupts the
	286	* token on the network (causes a RECON) and requires a significant delay.
	287	*
	288	* However, it does make sure the card is in a defined state.
	289	*/
	290	static int com90io_reset(struct net_device *dev, int really_reset)
	291	{
454d7c9b	292	struct arcnet_local *lp = netdev_priv(dev);
1da177e4 LT	293	short ioaddr = dev->base_addr;
	294
	295	BUGMSG(D_INIT, "Resetting %s (status=%02Xh)\n", dev->name, ASTATUS());
	296
	297	if (really_reset) {
	298	/* reset the card */
	299	inb(_RESET);
	300	mdelay(RESETtime);
	301	}
	302	/* Set the thing to IO-mapped, 8-bit mode */
	303	lp->config = (0x1C \| IOMAPflag) & ~ENABLE16flag;
	304	SETCONF();
	305
	306	ACOMMAND(CFLAGScmd \| RESETclear); /* clear flags & end reset */
	307	ACOMMAND(CFLAGScmd \| CONFIGclear);
	308
	309	/* verify that the ARCnet signature byte is present */
	310	if (get_buffer_byte(dev, 0) != TESTvalue) {
	311	BUGMSG(D_NORMAL, "reset failed: TESTvalue not present.\n");
	312	return 1;
	313	}
	314	/* enable extended (512-byte) packets */
	315	ACOMMAND(CONFIGcmd \| EXTconf);
	316
	317	/* done! return success. */
	318	return 0;
	319	}
	320
	321
	322	static void com90io_command(struct net_device *dev, int cmd)
	323	{
	324	short ioaddr = dev->base_addr;
	325
	326	ACOMMAND(cmd);
	327	}
	328
	329
	330	static int com90io_status(struct net_device *dev)
	331	{
	332	short ioaddr = dev->base_addr;
	333
	334	return ASTATUS();
	335	}
	336
	337
	338	static void com90io_setmask(struct net_device *dev, int mask)
	339	{
	340	short ioaddr = dev->base_addr;
	341
	342	AINTMASK(mask);
	343	}
	344
	345	static void com90io_copy_to_card(struct net_device *dev, int bufnum, int offset,
	346	void *buf, int count)
	347	{
	348	TIME("put_whole_buffer", count, put_whole_buffer(dev, bufnum * 512 + offset, count, buf));
	349	}
	350
	351
	352	static void com90io_copy_from_card(struct net_device *dev, int bufnum, int offset,
	353	void *buf, int count)
	354	{
	355	TIME("get_whole_buffer", count, get_whole_buffer(dev, bufnum * 512 + offset, count, buf));
	356	}
357
358	static int io; /* use the insmod io= irq= shmem= options */
359	static int irq;
360	static char device[9]; /* use eg. device=arc1 to change name */
361
362	module_param(io, int, 0);
363	module_param(irq, int, 0);
364	module_param_string(device, device, sizeof(device), 0);
365	MODULE_LICENSE("GPL");
366
367	#ifndef MODULE
368	static int __init com90io_setup(char *s)
369	{
370	int ints[4];
371	s = get_options(s, 4, ints);
372	if (!ints[0])
373	return 0;
374	switch (ints[0]) {
375	default: /* ERROR */
376	printk("com90io: Too many arguments.\n");
377	case 2: /* IRQ */
378	irq = ints[2];
379	case 1: /* IO address */
380	io = ints[1];
381	}
382	if (*s)
383	snprintf(device, sizeof(device), "%s", s);
384	return 1;
385	}
386	__setup("com90io=", com90io_setup);
387	#endif
388
389	static struct net_device *my_dev;
390
391	static int __init com90io_init(void)
392	{
393	struct net_device *dev;
394	int err;
395
396	dev = alloc_arcdev(device);
397	if (!dev)
398	return -ENOMEM;
399
1da177e4 LT	400	dev->base_addr = io;
	401	dev->irq = irq;
	402	if (dev->irq == 2)
	403	dev->irq = 9;
	404
	405	err = com90io_probe(dev);
	406
	407	if (err) {
	408	free_netdev(dev);
	409	return err;
	410	}
	411
	412	my_dev = dev;
	413	return 0;
	414	}
	415
	416	static void __exit com90io_exit(void)
	417	{
	418	struct net_device *dev = my_dev;
	419	int ioaddr = dev->base_addr;
	420
	421	unregister_netdev(dev);
	422
	423	/* Set the thing back to MMAP mode, in case the old driver is loaded later */
	424	outb((inb(_CONFIG) & ~IOMAPflag), _CONFIG);
	425
	426	free_irq(dev->irq, dev);
	427	release_region(dev->base_addr, ARCNET_TOTAL_SIZE);
	428	free_netdev(dev);
	429	}
	430
	431	module_init(com90io_init)
	432	module_exit(com90io_exit)