[mirror_ubuntu-bionic-kernel.git] / drivers / net / arcnet / arc-rimi.c

/*
 * Linux ARCnet driver - "RIM I" (entirely mem-mapped) cards
 * 
 * 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: RIM I (entirely mem-mapped) support\n"


/* Internal function declarations */

static int arcrimi_probe(struct net_device *dev);
static int arcrimi_found(struct net_device *dev);
static void arcrimi_command(struct net_device *dev, int command);
static int arcrimi_status(struct net_device *dev);
static void arcrimi_setmask(struct net_device *dev, int mask);
static int arcrimi_reset(struct net_device *dev, int really_reset);
static void arcrimi_copy_to_card(struct net_device *dev, int bufnum, int offset,
				 void *buf, int count);
static void arcrimi_copy_from_card(struct net_device *dev, int bufnum, int offset,
				   void *buf, int count);

/* Handy defines for ARCnet specific stuff */

/* Amount of I/O memory used by the card */
#define BUFFER_SIZE (512)
#define MIRROR_SIZE (BUFFER_SIZE*4)

/* 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()	readb(_STATUS)
#define ACOMMAND(cmd)	writeb((cmd),_COMMAND)
#define AINTMASK(msk)	writeb((msk),_INTMASK)
#define SETCONF()	writeb(lp->config,_CONFIG)


/*
 * We cannot probe for a RIM I card; one reason is I don't know how to reset
 * them.  In fact, we can't even get their node ID automatically.  So, we
 * need to be passed a specific shmem address, IRQ, and node ID.
 */
static int __init arcrimi_probe(struct net_device *dev)
{
	BUGLVL(D_NORMAL) printk(VERSION);
	BUGLVL(D_NORMAL) printk("E-mail me if you actually test the RIM I driver, please!\n");

	BUGMSG(D_NORMAL, "Given: node %02Xh, shmem %lXh, irq %d\n",
	       dev->dev_addr[0], dev->mem_start, dev->irq);

	if (dev->mem_start <= 0 || dev->irq <= 0) {
		BUGMSG(D_NORMAL, "No autoprobe for RIM I; you "
		       "must specify the shmem and irq!\n");
		return -ENODEV;
	}
	if (dev->dev_addr[0] == 0) {
		BUGMSG(D_NORMAL, "You need to specify your card's station "
		       "ID!\n");
		return -ENODEV;
	}
	/*
	 * Grab the memory region at mem_start for MIRROR_SIZE bytes.
	 * Later in arcrimi_found() the real size will be determined
	 * and this reserve will be released and the correct size
	 * will be taken.
	 */
	if (!request_mem_region(dev->mem_start, MIRROR_SIZE, "arcnet (90xx)")) {
		BUGMSG(D_NORMAL, "Card memory already allocated\n");
		return -ENODEV;
	}
	return arcrimi_found(dev);
}

static int check_mirror(unsigned long addr, size_t size)
{
	void __iomem *p;
	int res = -1;

	if (!request_mem_region(addr, size, "arcnet (90xx)"))
		return -1;

	p = ioremap(addr, size);
	if (p) {
		if (readb(p) == TESTvalue)
			res = 1;
		else
			res = 0;
		iounmap(p);
	}

	release_mem_region(addr, size);
	return res;
}

/*
 * Set up the struct net_device associated with this card.  Called after
 * probing succeeds.
 */
static int __init arcrimi_found(struct net_device *dev)
{
	struct arcnet_local *lp;
	unsigned long first_mirror, last_mirror, shmem;
	void __iomem *p;
	int mirror_size;
	int err;

	p = ioremap(dev->mem_start, MIRROR_SIZE);
	if (!p) {
		release_mem_region(dev->mem_start, MIRROR_SIZE);
		BUGMSG(D_NORMAL, "Can't ioremap\n");
		return -ENODEV;
	}

	/* reserve the irq */
	if (request_irq(dev->irq, arcnet_interrupt, 0, "arcnet (RIM I)", dev)) {
		iounmap(p);
		release_mem_region(dev->mem_start, MIRROR_SIZE);
		BUGMSG(D_NORMAL, "Can't get IRQ %d!\n", dev->irq);
		return -ENODEV;
	}

	shmem = dev->mem_start;
	writeb(TESTvalue, p);
	writeb(dev->dev_addr[0], p + 1);	/* actually the node ID */

	/* find the real shared memory start/end points, including mirrors */

	/* guess the actual size of one "memory mirror" - the number of
	 * bytes between copies of the shared memory.  On most cards, it's
	 * 2k (or there are no mirrors at all) but on some, it's 4k.
	 */
	mirror_size = MIRROR_SIZE;
	if (readb(p) == TESTvalue &&
	    check_mirror(shmem - MIRROR_SIZE, MIRROR_SIZE) == 0 &&
	    check_mirror(shmem - 2 * MIRROR_SIZE, MIRROR_SIZE) == 1)
		mirror_size = 2 * MIRROR_SIZE;

	first_mirror = shmem - mirror_size;
	while (check_mirror(first_mirror, mirror_size) == 1)
		first_mirror -= mirror_size;
	first_mirror += mirror_size;

	last_mirror = shmem + mirror_size;
	while (check_mirror(last_mirror, mirror_size) == 1)
		last_mirror += mirror_size;
	last_mirror -= mirror_size;

	dev->mem_start = first_mirror;
	dev->mem_end = last_mirror + MIRROR_SIZE - 1;

	/* initialize the rest of the device structure. */

	lp = netdev_priv(dev);
	lp->card_name = "RIM I";
	lp->hw.command = arcrimi_command;
	lp->hw.status = arcrimi_status;
	lp->hw.intmask = arcrimi_setmask;
	lp->hw.reset = arcrimi_reset;
	lp->hw.owner = THIS_MODULE;
	lp->hw.copy_to_card = arcrimi_copy_to_card;
	lp->hw.copy_from_card = arcrimi_copy_from_card;

	/*
	 * re-reserve the memory region - arcrimi_probe() alloced this reqion
	 * but didn't know the real size.  Free that region and then re-get
	 * with the correct size.  There is a VERY slim chance this could
	 * fail.
	 */
	iounmap(p);
	release_mem_region(shmem, MIRROR_SIZE);
	if (!request_mem_region(dev->mem_start,
				dev->mem_end - dev->mem_start + 1,
				"arcnet (90xx)")) {
		BUGMSG(D_NORMAL, "Card memory already allocated\n");
		goto err_free_irq;
	}

	lp->mem_start = ioremap(dev->mem_start, dev->mem_end - dev->mem_start + 1);
	if (!lp->mem_start) {
		BUGMSG(D_NORMAL, "Can't remap device memory!\n");
		goto err_release_mem;
	}

	/* get and check the station ID from offset 1 in shmem */
	dev->dev_addr[0] = readb(lp->mem_start + 1);

	BUGMSG(D_NORMAL, "ARCnet RIM I: station %02Xh found at IRQ %d, "
	       "ShMem %lXh (%ld*%d bytes).\n",
	       dev->dev_addr[0],
	       dev->irq, dev->mem_start,
	 (dev->mem_end - dev->mem_start + 1) / mirror_size, mirror_size);

	err = register_netdev(dev);
	if (err)
		goto err_unmap;

	return 0;

err_unmap:
	iounmap(lp->mem_start);
err_release_mem:
	release_mem_region(dev->mem_start, dev->mem_end - dev->mem_start + 1);
err_free_irq:
	free_irq(dev->irq, dev);
	return -EIO;
}


/*
 * 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 arcrimi_reset(struct net_device *dev, int really_reset)
{
	struct arcnet_local *lp = netdev_priv(dev);
	void __iomem *ioaddr = lp->mem_start + 0x800;

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

	if (really_reset) {
		writeb(TESTvalue, ioaddr - 0x800);	/* fake reset */
		return 0;
	}
	ACOMMAND(CFLAGScmd | RESETclear);	/* clear flags & end reset */
	ACOMMAND(CFLAGScmd | CONFIGclear);

	/* enable extended (512-byte) packets */
	ACOMMAND(CONFIGcmd | EXTconf);

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

static void arcrimi_setmask(struct net_device *dev, int mask)
{
	struct arcnet_local *lp = netdev_priv(dev);
	void __iomem *ioaddr = lp->mem_start + 0x800;

	AINTMASK(mask);
}

static int arcrimi_status(struct net_device *dev)
{
	struct arcnet_local *lp = netdev_priv(dev);
	void __iomem *ioaddr = lp->mem_start + 0x800;

	return ASTATUS();
}

static void arcrimi_command(struct net_device *dev, int cmd)
{
	struct arcnet_local *lp = netdev_priv(dev);
	void __iomem *ioaddr = lp->mem_start + 0x800;

	ACOMMAND(cmd);
}

static void arcrimi_copy_to_card(struct net_device *dev, int bufnum, int offset,
				 void *buf, int count)
{
	struct arcnet_local *lp = netdev_priv(dev);
	void __iomem *memaddr = lp->mem_start + 0x800 + bufnum * 512 + offset;
	TIME("memcpy_toio", count, memcpy_toio(memaddr, buf, count));
}


static void arcrimi_copy_from_card(struct net_device *dev, int bufnum, int offset,
				   void *buf, int count)
{
	struct arcnet_local *lp = netdev_priv(dev);
	void __iomem *memaddr = lp->mem_start + 0x800 + bufnum * 512 + offset;
	TIME("memcpy_fromio", count, memcpy_fromio(buf, memaddr, count));
}

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

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

static struct net_device *my_dev;

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

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

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

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

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

	my_dev = dev;
	return 0;
}

static void __exit arc_rimi_exit(void)
{
	struct net_device *dev = my_dev;
	struct arcnet_local *lp = netdev_priv(dev);

	unregister_netdev(dev);
	iounmap(lp->mem_start);
	release_mem_region(dev->mem_start, dev->mem_end - dev->mem_start + 1);
	free_irq(dev->irq, dev);
	free_netdev(dev);
}

#ifndef MODULE
static int __init arcrimi_setup(char *s)
{
	int ints[8];
	s = get_options(s, 8, ints);
	if (!ints[0])
		return 1;
	switch (ints[0]) {
	default:		/* ERROR */
		printk("arcrimi: Too many arguments.\n");
	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("arcrimi=", arcrimi_setup);
#endif				/* MODULE */

module_init(arc_rimi_init)
module_exit(arc_rimi_exit)
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Linux ARCnet driver - "RIM I" (entirely mem-mapped) cards
	3	*
	4	* Written 1994-1999 by Avery Pennarun.
	5	* Written 1999-2000 by Martin Mares <mj@ucw.cz>.
	6	* Derived from skeleton.c by Donald Becker.
	7	*
	8	* Special thanks to Contemporary Controls, Inc. (www.ccontrols.com)
	9	* for sponsoring the further development of this driver.
	10	*
	11	* **********************
	12	*
	13	* The original copyright of skeleton.c was as follows:
	14	*
	15	* skeleton.c Written 1993 by Donald Becker.
	16	* Copyright 1993 United States Government as represented by the
	17	* Director, National Security Agency. This software may only be used
	18	* and distributed according to the terms of the GNU General Public License as
	19	* modified by SRC, incorporated herein by reference.
	20	*
	21	* **********************
	22	*
	23	* For more details, see drivers/net/arcnet.c
	24	*
	25	* **********************
	26	*/
	27	#include <linux/kernel.h>
	28	#include <linux/module.h>
	29	#include <linux/moduleparam.h>
	30	#include <linux/ioport.h>
1da177e4 LT	31	#include <linux/delay.h>
	32	#include <linux/netdevice.h>
	33	#include <linux/bootmem.h>
	34	#include <linux/init.h>
	35	#include <asm/io.h>
	36	#include <linux/arcdevice.h>
	37
	38
	39	#define VERSION "arcnet: RIM I (entirely mem-mapped) support\n"
	40
	41
	42	/* Internal function declarations */
	43
	44	static int arcrimi_probe(struct net_device *dev);
	45	static int arcrimi_found(struct net_device *dev);
	46	static void arcrimi_command(struct net_device *dev, int command);
	47	static int arcrimi_status(struct net_device *dev);
	48	static void arcrimi_setmask(struct net_device *dev, int mask);
	49	static int arcrimi_reset(struct net_device *dev, int really_reset);
	50	static void arcrimi_copy_to_card(struct net_device *dev, int bufnum, int offset,
	51	void *buf, int count);
	52	static void arcrimi_copy_from_card(struct net_device *dev, int bufnum, int offset,
	53	void *buf, int count);
	54
	55	/* Handy defines for ARCnet specific stuff */
	56
	57	/* Amount of I/O memory used by the card */
	58	#define BUFFER_SIZE (512)
	59	#define MIRROR_SIZE (BUFFER_SIZE*4)
	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() readb(_STATUS)
	76	#define ACOMMAND(cmd) writeb((cmd),_COMMAND)
	77	#define AINTMASK(msk) writeb((msk),_INTMASK)
	78	#define SETCONF() writeb(lp->config,_CONFIG)
	79
	80
	81	/*
	82	* We cannot probe for a RIM I card; one reason is I don't know how to reset
	83	* them. In fact, we can't even get their node ID automatically. So, we
	84	* need to be passed a specific shmem address, IRQ, and node ID.
	85	*/
	86	static int __init arcrimi_probe(struct net_device *dev)
	87	{
	88	BUGLVL(D_NORMAL) printk(VERSION);
	89	BUGLVL(D_NORMAL) printk("E-mail me if you actually test the RIM I driver, please!\n");
	90
	91	BUGMSG(D_NORMAL, "Given: node %02Xh, shmem %lXh, irq %d\n",
	92	dev->dev_addr[0], dev->mem_start, dev->irq);
	93
	94	if (dev->mem_start <= 0 \|\| dev->irq <= 0) {
95	BUGMSG(D_NORMAL, "No autoprobe for RIM I; you "
96	"must specify the shmem and irq!\n");
97	return -ENODEV;
98	}
d0f6ecad AV	99	if (dev->dev_addr[0] == 0) {
	100	BUGMSG(D_NORMAL, "You need to specify your card's station "
	101	"ID!\n");
	102	return -ENODEV;
	103	}
1da177e4	104	/*
d0f6ecad	105	* Grab the memory region at mem_start for MIRROR_SIZE bytes.
1da177e4 LT	106	* Later in arcrimi_found() the real size will be determined
	107	* and this reserve will be released and the correct size
	108	* will be taken.
	109	*/
d0f6ecad	110	if (!request_mem_region(dev->mem_start, MIRROR_SIZE, "arcnet (90xx)")) {
1da177e4 LT	111	BUGMSG(D_NORMAL, "Card memory already allocated\n");
	112	return -ENODEV;
	113	}
1da177e4 LT	114	return arcrimi_found(dev);
	115	}
	116
d0f6ecad AV	117	static int check_mirror(unsigned long addr, size_t size)
	118	{
	119	void __iomem *p;
	120	int res = -1;
	121
	122	if (!request_mem_region(addr, size, "arcnet (90xx)"))
	123	return -1;
	124
	125	p = ioremap(addr, size);
	126	if (p) {
	127	if (readb(p) == TESTvalue)
	128	res = 1;
	129	else
	130	res = 0;
	131	iounmap(p);
	132	}
	133
	134	release_mem_region(addr, size);
	135	return res;
	136	}
1da177e4 LT	137
	138	/*
	139	* Set up the struct net_device associated with this card. Called after
	140	* probing succeeds.
	141	*/
	142	static int __init arcrimi_found(struct net_device *dev)
	143	{
	144	struct arcnet_local *lp;
	145	unsigned long first_mirror, last_mirror, shmem;
d0f6ecad	146	void __iomem *p;
1da177e4 LT	147	int mirror_size;
	148	int err;
	149
d0f6ecad AV	150	p = ioremap(dev->mem_start, MIRROR_SIZE);
	151	if (!p) {
	152	release_mem_region(dev->mem_start, MIRROR_SIZE);
	153	BUGMSG(D_NORMAL, "Can't ioremap\n");
	154	return -ENODEV;
	155	}
	156
1da177e4	157	/* reserve the irq */
a0607fd3	158	if (request_irq(dev->irq, arcnet_interrupt, 0, "arcnet (RIM I)", dev)) {
d0f6ecad AV	159	iounmap(p);
d0f6ecad AV	160	release_mem_region(dev->mem_start, MIRROR_SIZE);
1da177e4 LT	161	BUGMSG(D_NORMAL, "Can't get IRQ %d!\n", dev->irq);
	162	return -ENODEV;
	163	}
	164
	165	shmem = dev->mem_start;
d0f6ecad AV	166	writeb(TESTvalue, p);
d0f6ecad AV	167	writeb(dev->dev_addr[0], p + 1); /* actually the node ID */
1da177e4 LT	168
	169	/* find the real shared memory start/end points, including mirrors */
	170
	171	/* guess the actual size of one "memory mirror" - the number of
	172	* bytes between copies of the shared memory. On most cards, it's
	173	* 2k (or there are no mirrors at all) but on some, it's 4k.
	174	*/
	175	mirror_size = MIRROR_SIZE;
8e95a202 JP	176	if (readb(p) == TESTvalue &&
	177	check_mirror(shmem - MIRROR_SIZE, MIRROR_SIZE) == 0 &&
	178	check_mirror(shmem - 2 * MIRROR_SIZE, MIRROR_SIZE) == 1)
d0f6ecad	179	mirror_size = 2 * MIRROR_SIZE;
1da177e4	180
d0f6ecad AV	181	first_mirror = shmem - mirror_size;
d0f6ecad AV	182	while (check_mirror(first_mirror, mirror_size) == 1)
1da177e4 LT	183	first_mirror -= mirror_size;
	184	first_mirror += mirror_size;
	185
d0f6ecad AV	186	last_mirror = shmem + mirror_size;
d0f6ecad AV	187	while (check_mirror(last_mirror, mirror_size) == 1)
1da177e4 LT	188	last_mirror += mirror_size;
	189	last_mirror -= mirror_size;
	190
	191	dev->mem_start = first_mirror;
	192	dev->mem_end = last_mirror + MIRROR_SIZE - 1;
	193
	194	/* initialize the rest of the device structure. */
	195
454d7c9b	196	lp = netdev_priv(dev);
1da177e4 LT	197	lp->card_name = "RIM I";
	198	lp->hw.command = arcrimi_command;
	199	lp->hw.status = arcrimi_status;
	200	lp->hw.intmask = arcrimi_setmask;
	201	lp->hw.reset = arcrimi_reset;
	202	lp->hw.owner = THIS_MODULE;
	203	lp->hw.copy_to_card = arcrimi_copy_to_card;
	204	lp->hw.copy_from_card = arcrimi_copy_from_card;
	205
	206	/*
	207	* re-reserve the memory region - arcrimi_probe() alloced this reqion
	208	* but didn't know the real size. Free that region and then re-get
	209	* with the correct size. There is a VERY slim chance this could
	210	* fail.
	211	*/
d0f6ecad AV	212	iounmap(p);
d0f6ecad AV	213	release_mem_region(shmem, MIRROR_SIZE);
1da177e4 LT	214	if (!request_mem_region(dev->mem_start,
	215	dev->mem_end - dev->mem_start + 1,
	216	"arcnet (90xx)")) {
	217	BUGMSG(D_NORMAL, "Card memory already allocated\n");
	218	goto err_free_irq;
	219	}
	220
	221	lp->mem_start = ioremap(dev->mem_start, dev->mem_end - dev->mem_start + 1);
	222	if (!lp->mem_start) {
	223	BUGMSG(D_NORMAL, "Can't remap device memory!\n");
	224	goto err_release_mem;
	225	}
	226
	227	/* get and check the station ID from offset 1 in shmem */
	228	dev->dev_addr[0] = readb(lp->mem_start + 1);
	229
	230	BUGMSG(D_NORMAL, "ARCnet RIM I: station %02Xh found at IRQ %d, "
	231	"ShMem %lXh (%ld*%d bytes).\n",
	232	dev->dev_addr[0],
	233	dev->irq, dev->mem_start,
	234	(dev->mem_end - dev->mem_start + 1) / mirror_size, mirror_size);
	235
	236	err = register_netdev(dev);
	237	if (err)
	238	goto err_unmap;
	239
	240	return 0;
	241
	242	err_unmap:
	243	iounmap(lp->mem_start);
	244	err_release_mem:
	245	release_mem_region(dev->mem_start, dev->mem_end - dev->mem_start + 1);
	246	err_free_irq:
	247	free_irq(dev->irq, dev);
	248	return -EIO;
	249	}
	250
	251
	252	/*
	253	* Do a hardware reset on the card, and set up necessary registers.
	254	*
	255	* This should be called as little as possible, because it disrupts the
	256	* token on the network (causes a RECON) and requires a significant delay.
	257	*
	258	* However, it does make sure the card is in a defined state.
	259	*/
	260	static int arcrimi_reset(struct net_device *dev, int really_reset)
	261	{
454d7c9b	262	struct arcnet_local *lp = netdev_priv(dev);
1da177e4 LT	263	void __iomem *ioaddr = lp->mem_start + 0x800;
	264
	265	BUGMSG(D_INIT, "Resetting %s (status=%02Xh)\n", dev->name, ASTATUS());
	266
	267	if (really_reset) {
	268	writeb(TESTvalue, ioaddr - 0x800); /* fake reset */
	269	return 0;
	270	}
	271	ACOMMAND(CFLAGScmd \| RESETclear); /* clear flags & end reset */
	272	ACOMMAND(CFLAGScmd \| CONFIGclear);
	273
	274	/* enable extended (512-byte) packets */
	275	ACOMMAND(CONFIGcmd \| EXTconf);
	276
	277	/* done! return success. */
	278	return 0;
	279	}
	280
	281	static void arcrimi_setmask(struct net_device *dev, int mask)
	282	{
454d7c9b	283	struct arcnet_local *lp = netdev_priv(dev);
1da177e4 LT	284	void __iomem *ioaddr = lp->mem_start + 0x800;
	285
	286	AINTMASK(mask);
	287	}
	288
	289	static int arcrimi_status(struct net_device *dev)
	290	{
454d7c9b	291	struct arcnet_local *lp = netdev_priv(dev);
1da177e4 LT	292	void __iomem *ioaddr = lp->mem_start + 0x800;
	293
	294	return ASTATUS();
	295	}
	296
	297	static void arcrimi_command(struct net_device *dev, int cmd)
	298	{
454d7c9b	299	struct arcnet_local *lp = netdev_priv(dev);
1da177e4 LT	300	void __iomem *ioaddr = lp->mem_start + 0x800;
	301
	302	ACOMMAND(cmd);
	303	}
	304
	305	static void arcrimi_copy_to_card(struct net_device *dev, int bufnum, int offset,
	306	void *buf, int count)
	307	{
454d7c9b	308	struct arcnet_local *lp = netdev_priv(dev);
1da177e4 LT	309	void __iomem memaddr = lp->mem_start + 0x800 + bufnum 512 + offset;
	310	TIME("memcpy_toio", count, memcpy_toio(memaddr, buf, count));
	311	}
	312
	313
	314	static void arcrimi_copy_from_card(struct net_device *dev, int bufnum, int offset,
	315	void *buf, int count)
	316	{
454d7c9b	317	struct arcnet_local *lp = netdev_priv(dev);
1da177e4 LT	318	void __iomem memaddr = lp->mem_start + 0x800 + bufnum 512 + offset;
	319	TIME("memcpy_fromio", count, memcpy_fromio(buf, memaddr, count));
	320	}
	321
	322	static int node;
	323	static int io; /* use the insmod io= irq= node= options */
	324	static int irq;
	325	static char device[9]; /* use eg. device=arc1 to change name */
	326
	327	module_param(node, int, 0);
	328	module_param(io, int, 0);
	329	module_param(irq, int, 0);
	330	module_param_string(device, device, sizeof(device), 0);
	331	MODULE_LICENSE("GPL");
	332
	333	static struct net_device *my_dev;
	334
	335	static int __init arc_rimi_init(void)
	336	{
	337	struct net_device *dev;
	338
	339	dev = alloc_arcdev(device);
	340	if (!dev)
	341	return -ENOMEM;
	342
	343	if (node && node != 0xff)
	344	dev->dev_addr[0] = node;
	345
	346	dev->mem_start = io;
	347	dev->irq = irq;
	348	if (dev->irq == 2)
	349	dev->irq = 9;
	350
	351	if (arcrimi_probe(dev)) {
	352	free_netdev(dev);
	353	return -EIO;
	354	}
	355
	356	my_dev = dev;
	357	return 0;
	358	}
	359
	360	static void __exit arc_rimi_exit(void)
	361	{
	362	struct net_device *dev = my_dev;
454d7c9b	363	struct arcnet_local *lp = netdev_priv(dev);
1da177e4 LT	364
	365	unregister_netdev(dev);
	366	iounmap(lp->mem_start);
	367	release_mem_region(dev->mem_start, dev->mem_end - dev->mem_start + 1);
	368	free_irq(dev->irq, dev);
	369	free_netdev(dev);
	370	}
	371
	372	#ifndef MODULE
	373	static int __init arcrimi_setup(char *s)
	374	{
	375	int ints[8];
	376	s = get_options(s, 8, ints);
	377	if (!ints[0])
	378	return 1;
	379	switch (ints[0]) {
	380	default: /* ERROR */
	381	printk("arcrimi: Too many arguments.\n");
	382	case 3: /* Node ID */
	383	node = ints[3];
	384	case 2: /* IRQ */
	385	irq = ints[2];
	386	case 1: /* IO address */
	387	io = ints[1];
	388	}
	389	if (*s)
	390	snprintf(device, sizeof(device), "%s", s);
	391	return 1;
	392	}
	393	__setup("arcrimi=", arcrimi_setup);
	394	#endif /* MODULE */
	395
	396	module_init(arc_rimi_init)
	397	module_exit(arc_rimi_exit)