[linux.git] / drivers / block / z2ram.c

/*
** z2ram - Amiga pseudo-driver to access 16bit-RAM in ZorroII space
**         as a block device, to be used as a RAM disk or swap space
** 
** Copyright (C) 1994 by Ingo Wilken ([email protected])
**
** ++Geert: support for zorro_unused_z2ram, better range checking
** ++roman: translate accesses via an array
** ++Milan: support for ChipRAM usage
** ++yambo: converted to 2.0 kernel
** ++yambo: modularized and support added for 3 minor devices including:
**          MAJOR  MINOR  DESCRIPTION
**          -----  -----  ----------------------------------------------
**          37     0       Use Zorro II and Chip ram
**          37     1       Use only Zorro II ram
**          37     2       Use only Chip ram
**          37     4-7     Use memory list entry 1-4 (first is 0)
** ++jskov: support for 1-4th memory list entry.
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted, provided
** that the above copyright notice appear in all copies and that both that
** copyright notice and this permission notice appear in supporting
** documentation.  This software is provided "as is" without express or
** implied warranty.
*/

#define DEVICE_NAME "Z2RAM"

#include <linux/major.h>
#include <linux/vmalloc.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/bitops.h>

#include <asm/setup.h>
#include <asm/amigahw.h>
#include <asm/pgtable.h>

#include <linux/zorro.h>


extern int m68k_realnum_memory;
extern struct mem_info m68k_memory[NUM_MEMINFO];

#define Z2MINOR_COMBINED      (0)
#define Z2MINOR_Z2ONLY        (1)
#define Z2MINOR_CHIPONLY      (2)
#define Z2MINOR_MEMLIST1      (4)
#define Z2MINOR_MEMLIST2      (5)
#define Z2MINOR_MEMLIST3      (6)
#define Z2MINOR_MEMLIST4      (7)
#define Z2MINOR_COUNT         (8) /* Move this down when adding a new minor */

#define Z2RAM_CHUNK1024       ( Z2RAM_CHUNKSIZE >> 10 )

static u_long *z2ram_map    = NULL;
static u_long z2ram_size    = 0;
static int z2_count         = 0;
static int chip_count       = 0;
static int list_count       = 0;
static int current_device   = -1;

static DEFINE_SPINLOCK(z2ram_lock);

static struct block_device_operations z2_fops;
static struct gendisk *z2ram_gendisk;

static void do_z2_request(struct request_queue *q)
{
	struct request *req;
	while ((req = elv_next_request(q)) != NULL) {
		unsigned long start = blk_rq_pos(req) << 9;
		unsigned long len  = blk_rq_cur_sectors(req) << 9;

		if (start + len > z2ram_size) {
			printk( KERN_ERR DEVICE_NAME ": bad access: block=%lu, count=%u\n",
				blk_rq_pos(req), blk_rq_cur_sectors(req));
			__blk_end_request_cur(req, -EIO);
			continue;
		}
		while (len) {
			unsigned long addr = start & Z2RAM_CHUNKMASK;
			unsigned long size = Z2RAM_CHUNKSIZE - addr;
			if (len < size)
				size = len;
			addr += z2ram_map[ start >> Z2RAM_CHUNKSHIFT ];
			if (rq_data_dir(req) == READ)
				memcpy(req->buffer, (char *)addr, size);
			else
				memcpy((char *)addr, req->buffer, size);
			start += size;
			len -= size;
		}
		__blk_end_request_cur(req, 0);
	}
}

static void
get_z2ram( void )
{
    int i;

    for ( i = 0; i < Z2RAM_SIZE / Z2RAM_CHUNKSIZE; i++ )
    {
	if ( test_bit( i, zorro_unused_z2ram ) )
	{
	    z2_count++;
	    z2ram_map[ z2ram_size++ ] = 
		ZTWO_VADDR( Z2RAM_START ) + ( i << Z2RAM_CHUNKSHIFT );
	    clear_bit( i, zorro_unused_z2ram );
	}
    }

    return;
}

static void
get_chipram( void )
{

    while ( amiga_chip_avail() > ( Z2RAM_CHUNKSIZE * 4 ) )
    {
	chip_count++;
	z2ram_map[ z2ram_size ] =
	    (u_long)amiga_chip_alloc( Z2RAM_CHUNKSIZE, "z2ram" );

	if ( z2ram_map[ z2ram_size ] == 0 )
	{
	    break;
	}

	z2ram_size++;
    }
	
    return;
}

static int z2_open(struct block_device *bdev, fmode_t mode)
{
    int device;
    int max_z2_map = ( Z2RAM_SIZE / Z2RAM_CHUNKSIZE ) *
	sizeof( z2ram_map[0] );
    int max_chip_map = ( amiga_chip_size / Z2RAM_CHUNKSIZE ) *
	sizeof( z2ram_map[0] );
    int rc = -ENOMEM;

    device = MINOR(bdev->bd_dev);

    if ( current_device != -1 && current_device != device )
    {
	rc = -EBUSY;
	goto err_out;
    }

    if ( current_device == -1 )
    {
	z2_count   = 0;
	chip_count = 0;
	list_count = 0;
	z2ram_size = 0;

	/* Use a specific list entry. */
	if (device >= Z2MINOR_MEMLIST1 && device <= Z2MINOR_MEMLIST4) {
		int index = device - Z2MINOR_MEMLIST1 + 1;
		unsigned long size, paddr, vaddr;

		if (index >= m68k_realnum_memory) {
			printk( KERN_ERR DEVICE_NAME
				": no such entry in z2ram_map\n" );
		        goto err_out;
		}

		paddr = m68k_memory[index].addr;
		size = m68k_memory[index].size & ~(Z2RAM_CHUNKSIZE-1);

#ifdef __powerpc__
		/* FIXME: ioremap doesn't build correct memory tables. */
		{
			vfree(vmalloc (size));
		}

		vaddr = (unsigned long) __ioremap (paddr, size, 
						   _PAGE_WRITETHRU);

#else
		vaddr = (unsigned long)z_remap_nocache_nonser(paddr, size);
#endif
		z2ram_map = 
			kmalloc((size/Z2RAM_CHUNKSIZE)*sizeof(z2ram_map[0]),
				GFP_KERNEL);
		if ( z2ram_map == NULL )
		{
		    printk( KERN_ERR DEVICE_NAME
			": cannot get mem for z2ram_map\n" );
		    goto err_out;
		}

		while (size) {
			z2ram_map[ z2ram_size++ ] = vaddr;
			size -= Z2RAM_CHUNKSIZE;
			vaddr += Z2RAM_CHUNKSIZE;
			list_count++;
		}

		if ( z2ram_size != 0 )
		    printk( KERN_INFO DEVICE_NAME
			": using %iK List Entry %d Memory\n",
			list_count * Z2RAM_CHUNK1024, index );
	} else

	switch ( device )
	{
	    case Z2MINOR_COMBINED:

		z2ram_map = kmalloc( max_z2_map + max_chip_map, GFP_KERNEL );
		if ( z2ram_map == NULL )
		{
		    printk( KERN_ERR DEVICE_NAME
			": cannot get mem for z2ram_map\n" );
		    goto err_out;
		}

		get_z2ram();
		get_chipram();

		if ( z2ram_size != 0 )
		    printk( KERN_INFO DEVICE_NAME 
			": using %iK Zorro II RAM and %iK Chip RAM (Total %dK)\n",
			z2_count * Z2RAM_CHUNK1024,
			chip_count * Z2RAM_CHUNK1024,
			( z2_count + chip_count ) * Z2RAM_CHUNK1024 );

	    break;

    	    case Z2MINOR_Z2ONLY:
		z2ram_map = kmalloc( max_z2_map, GFP_KERNEL );
		if ( z2ram_map == NULL )
		{
		    printk( KERN_ERR DEVICE_NAME
			": cannot get mem for z2ram_map\n" );
		    goto err_out;
		}

		get_z2ram();

		if ( z2ram_size != 0 )
		    printk( KERN_INFO DEVICE_NAME 
			": using %iK of Zorro II RAM\n",
			z2_count * Z2RAM_CHUNK1024 );

	    break;

	    case Z2MINOR_CHIPONLY:
		z2ram_map = kmalloc( max_chip_map, GFP_KERNEL );
		if ( z2ram_map == NULL )
		{
		    printk( KERN_ERR DEVICE_NAME
			": cannot get mem for z2ram_map\n" );
		    goto err_out;
		}

		get_chipram();

		if ( z2ram_size != 0 )
		    printk( KERN_INFO DEVICE_NAME 
			": using %iK Chip RAM\n",
			chip_count * Z2RAM_CHUNK1024 );
		    
	    break;

	    default:
		rc = -ENODEV;
		goto err_out;
	
	    break;
	}

	if ( z2ram_size == 0 )
	{
	    printk( KERN_NOTICE DEVICE_NAME
		": no unused ZII/Chip RAM found\n" );
	    goto err_out_kfree;
	}

	current_device = device;
	z2ram_size <<= Z2RAM_CHUNKSHIFT;
	set_capacity(z2ram_gendisk, z2ram_size >> 9);
    }

    return 0;

err_out_kfree:
    kfree(z2ram_map);
err_out:
    return rc;
}

static int
z2_release(struct gendisk *disk, fmode_t mode)
{
    if ( current_device == -1 )
	return 0;     

    /*
     * FIXME: unmap memory
     */

    return 0;
}

static struct block_device_operations z2_fops =
{
	.owner		= THIS_MODULE,
	.open		= z2_open,
	.release	= z2_release,
};

static struct kobject *z2_find(dev_t dev, int *part, void *data)
{
	*part = 0;
	return get_disk(z2ram_gendisk);
}

static struct request_queue *z2_queue;

static int __init 
z2_init(void)
{
    int ret;

    if (!MACH_IS_AMIGA)
	return -ENODEV;

    ret = -EBUSY;
    if (register_blkdev(Z2RAM_MAJOR, DEVICE_NAME))
	goto err;

    ret = -ENOMEM;
    z2ram_gendisk = alloc_disk(1);
    if (!z2ram_gendisk)
	goto out_disk;

    z2_queue = blk_init_queue(do_z2_request, &z2ram_lock);
    if (!z2_queue)
	goto out_queue;

    z2ram_gendisk->major = Z2RAM_MAJOR;
    z2ram_gendisk->first_minor = 0;
    z2ram_gendisk->fops = &z2_fops;
    sprintf(z2ram_gendisk->disk_name, "z2ram");

    z2ram_gendisk->queue = z2_queue;
    add_disk(z2ram_gendisk);
    blk_register_region(MKDEV(Z2RAM_MAJOR, 0), Z2MINOR_COUNT, THIS_MODULE,
				z2_find, NULL, NULL);

    return 0;

out_queue:
    put_disk(z2ram_gendisk);
out_disk:
    unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
err:
    return ret;
}

static void __exit z2_exit(void)
{
    int i, j;
    blk_unregister_region(MKDEV(Z2RAM_MAJOR, 0), 256);
    unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
    del_gendisk(z2ram_gendisk);
    put_disk(z2ram_gendisk);
    blk_cleanup_queue(z2_queue);

    if ( current_device != -1 )
    {
	i = 0;

	for ( j = 0 ; j < z2_count; j++ )
	{
	    set_bit( i++, zorro_unused_z2ram ); 
	}

	for ( j = 0 ; j < chip_count; j++ )
	{
	    if ( z2ram_map[ i ] )
	    {
		amiga_chip_free( (void *) z2ram_map[ i++ ] );
	    }
	}

	if ( z2ram_map != NULL )
	{
	    kfree( z2ram_map );
	}
    }

    return;
} 

module_init(z2_init);
module_exit(z2_exit);
MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/*
	2	** z2ram - Amiga pseudo-driver to access 16bit-RAM in ZorroII space
	3	** as a block device, to be used as a RAM disk or swap space
	4	**
	5	** Copyright (C) 1994 by Ingo Wilken ([email protected])
	6	**
	7	** ++Geert: support for zorro_unused_z2ram, better range checking
	8	** ++roman: translate accesses via an array
	9	** ++Milan: support for ChipRAM usage
	10	** ++yambo: converted to 2.0 kernel
	11	** ++yambo: modularized and support added for 3 minor devices including:
	12	** MAJOR MINOR DESCRIPTION
	13	** ----- ----- ----------------------------------------------
	14	** 37 0 Use Zorro II and Chip ram
	15	** 37 1 Use only Zorro II ram
	16	** 37 2 Use only Chip ram
	17	** 37 4-7 Use memory list entry 1-4 (first is 0)
	18	** ++jskov: support for 1-4th memory list entry.
	19	**
	20	** Permission to use, copy, modify, and distribute this software and its
	21	** documentation for any purpose and without fee is hereby granted, provided
	22	** that the above copyright notice appear in all copies and that both that
	23	** copyright notice and this permission notice appear in supporting
	24	** documentation. This software is provided "as is" without express or
	25	** implied warranty.
	26	*/
	27
	28	#define DEVICE_NAME "Z2RAM"
	29
	30	#include <linux/major.h>
	31	#include <linux/vmalloc.h>
	32	#include <linux/init.h>
	33	#include <linux/module.h>
	34	#include <linux/blkdev.h>
	35	#include <linux/bitops.h>
	36
	37	#include <asm/setup.h>
	38	#include <asm/amigahw.h>
	39	#include <asm/pgtable.h>
	40
	41	#include <linux/zorro.h>
	42
	43
	44	extern int m68k_realnum_memory;
	45	extern struct mem_info m68k_memory[NUM_MEMINFO];
	46
1da177e4 LT	47	#define Z2MINOR_COMBINED (0)
	48	#define Z2MINOR_Z2ONLY (1)
	49	#define Z2MINOR_CHIPONLY (2)
	50	#define Z2MINOR_MEMLIST1 (4)
	51	#define Z2MINOR_MEMLIST2 (5)
	52	#define Z2MINOR_MEMLIST3 (6)
	53	#define Z2MINOR_MEMLIST4 (7)
	54	#define Z2MINOR_COUNT (8) /* Move this down when adding a new minor */
	55
	56	#define Z2RAM_CHUNK1024 ( Z2RAM_CHUNKSIZE >> 10 )
	57
	58	static u_long *z2ram_map = NULL;
	59	static u_long z2ram_size = 0;
	60	static int z2_count = 0;
	61	static int chip_count = 0;
	62	static int list_count = 0;
	63	static int current_device = -1;
	64
	65	static DEFINE_SPINLOCK(z2ram_lock);
	66
	67	static struct block_device_operations z2_fops;
	68	static struct gendisk *z2ram_gendisk;
	69
165125e1	70	static void do_z2_request(struct request_queue *q)
1da177e4 LT	71	{
	72	struct request *req;
	73	while ((req = elv_next_request(q)) != NULL) {
83096ebf TH	74	unsigned long start = blk_rq_pos(req) << 9;
83096ebf TH	75	unsigned long len = blk_rq_cur_sectors(req) << 9;
1da177e4 LT	76
	77	if (start + len > z2ram_size) {
	78	printk( KERN_ERR DEVICE_NAME ": bad access: block=%lu, count=%u\n",
83096ebf	79	blk_rq_pos(req), blk_rq_cur_sectors(req));
f06d9a2b	80	__blk_end_request_cur(req, -EIO);
1da177e4 LT	81	continue;
	82	}
	83	while (len) {
	84	unsigned long addr = start & Z2RAM_CHUNKMASK;
	85	unsigned long size = Z2RAM_CHUNKSIZE - addr;
	86	if (len < size)
	87	size = len;
	88	addr += z2ram_map[ start >> Z2RAM_CHUNKSHIFT ];
	89	if (rq_data_dir(req) == READ)
	90	memcpy(req->buffer, (char *)addr, size);
	91	else
	92	memcpy((char *)addr, req->buffer, size);
	93	start += size;
	94	len -= size;
	95	}
f06d9a2b	96	__blk_end_request_cur(req, 0);
1da177e4 LT	97	}
	98	}
	99
	100	static void
	101	get_z2ram( void )
	102	{
	103	int i;
	104
	105	for ( i = 0; i < Z2RAM_SIZE / Z2RAM_CHUNKSIZE; i++ )
	106	{
	107	if ( test_bit( i, zorro_unused_z2ram ) )
	108	{
	109	z2_count++;
	110	z2ram_map[ z2ram_size++ ] =
	111	ZTWO_VADDR( Z2RAM_START ) + ( i << Z2RAM_CHUNKSHIFT );
	112	clear_bit( i, zorro_unused_z2ram );
	113	}
	114	}
	115
	116	return;
	117	}
	118
	119	static void
	120	get_chipram( void )
	121	{
	122
	123	while ( amiga_chip_avail() > ( Z2RAM_CHUNKSIZE * 4 ) )
	124	{
	125	chip_count++;
	126	z2ram_map[ z2ram_size ] =
	127	(u_long)amiga_chip_alloc( Z2RAM_CHUNKSIZE, "z2ram" );
	128
	129	if ( z2ram_map[ z2ram_size ] == 0 )
	130	{
	131	break;
	132	}
	133
	134	z2ram_size++;
	135	}
	136
	137	return;
	138	}
	139
ab746cb9	140	static int z2_open(struct block_device *bdev, fmode_t mode)
1da177e4 LT	141	{
	142	int device;
	143	int max_z2_map = ( Z2RAM_SIZE / Z2RAM_CHUNKSIZE ) *
	144	sizeof( z2ram_map[0] );
	145	int max_chip_map = ( amiga_chip_size / Z2RAM_CHUNKSIZE ) *
	146	sizeof( z2ram_map[0] );
	147	int rc = -ENOMEM;
	148
ab746cb9	149	device = MINOR(bdev->bd_dev);
1da177e4 LT	150
	151	if ( current_device != -1 && current_device != device )
	152	{
	153	rc = -EBUSY;
	154	goto err_out;
	155	}
	156
	157	if ( current_device == -1 )
	158	{
	159	z2_count = 0;
	160	chip_count = 0;
	161	list_count = 0;
	162	z2ram_size = 0;
	163
	164	/* Use a specific list entry. */
	165	if (device >= Z2MINOR_MEMLIST1 && device <= Z2MINOR_MEMLIST4) {
	166	int index = device - Z2MINOR_MEMLIST1 + 1;
	167	unsigned long size, paddr, vaddr;
	168
	169	if (index >= m68k_realnum_memory) {
	170	printk( KERN_ERR DEVICE_NAME
	171	": no such entry in z2ram_map\n" );
	172	goto err_out;
	173	}
	174
	175	paddr = m68k_memory[index].addr;
	176	size = m68k_memory[index].size & ~(Z2RAM_CHUNKSIZE-1);
	177
	178	#ifdef __powerpc__
	179	/* FIXME: ioremap doesn't build correct memory tables. */
	180	{
	181	vfree(vmalloc (size));
	182	}
	183
	184	vaddr = (unsigned long) __ioremap (paddr, size,
	185	_PAGE_WRITETHRU);
	186
	187	#else
	188	vaddr = (unsigned long)z_remap_nocache_nonser(paddr, size);
	189	#endif
	190	z2ram_map =
	191	kmalloc((size/Z2RAM_CHUNKSIZE)*sizeof(z2ram_map[0]),
	192	GFP_KERNEL);
	193	if ( z2ram_map == NULL )
	194	{
	195	printk( KERN_ERR DEVICE_NAME
	196	": cannot get mem for z2ram_map\n" );
	197	goto err_out;
	198	}
	199
	200	while (size) {
	201	z2ram_map[ z2ram_size++ ] = vaddr;
	202	size -= Z2RAM_CHUNKSIZE;
	203	vaddr += Z2RAM_CHUNKSIZE;
	204	list_count++;
	205	}
	206
	207	if ( z2ram_size != 0 )
	208	printk( KERN_INFO DEVICE_NAME
	209	": using %iK List Entry %d Memory\n",
	210	list_count * Z2RAM_CHUNK1024, index );
	211	} else
	212
	213	switch ( device )
214	{
215	case Z2MINOR_COMBINED:
216
217	z2ram_map = kmalloc( max_z2_map + max_chip_map, GFP_KERNEL );
218	if ( z2ram_map == NULL )
219	{
220	printk( KERN_ERR DEVICE_NAME
221	": cannot get mem for z2ram_map\n" );
222	goto err_out;
223	}
224
225	get_z2ram();
226	get_chipram();
227
228	if ( z2ram_size != 0 )
229	printk( KERN_INFO DEVICE_NAME
230	": using %iK Zorro II RAM and %iK Chip RAM (Total %dK)\n",
231	z2_count * Z2RAM_CHUNK1024,
232	chip_count * Z2RAM_CHUNK1024,
233	( z2_count + chip_count ) * Z2RAM_CHUNK1024 );
234
235	break;
236
237	case Z2MINOR_Z2ONLY:
238	z2ram_map = kmalloc( max_z2_map, GFP_KERNEL );
239	if ( z2ram_map == NULL )
240	{
241	printk( KERN_ERR DEVICE_NAME
242	": cannot get mem for z2ram_map\n" );
243	goto err_out;
244	}
245
246	get_z2ram();
247
248	if ( z2ram_size != 0 )
249	printk( KERN_INFO DEVICE_NAME
250	": using %iK of Zorro II RAM\n",
251	z2_count * Z2RAM_CHUNK1024 );
252
253	break;
254
255	case Z2MINOR_CHIPONLY:
256	z2ram_map = kmalloc( max_chip_map, GFP_KERNEL );
257	if ( z2ram_map == NULL )
258	{
259	printk( KERN_ERR DEVICE_NAME
260	": cannot get mem for z2ram_map\n" );
261	goto err_out;
262	}
263
264	get_chipram();
265
266	if ( z2ram_size != 0 )
267	printk( KERN_INFO DEVICE_NAME
268	": using %iK Chip RAM\n",
269	chip_count * Z2RAM_CHUNK1024 );
270
271	break;
272
273	default:
274	rc = -ENODEV;
275	goto err_out;
276
277	break;
278	}
279
280	if ( z2ram_size == 0 )
281	{
282	printk( KERN_NOTICE DEVICE_NAME
283	": no unused ZII/Chip RAM found\n" );
284	goto err_out_kfree;
285	}
286
287	current_device = device;
288	z2ram_size <<= Z2RAM_CHUNKSHIFT;
289	set_capacity(z2ram_gendisk, z2ram_size >> 9);
290	}
291
292	return 0;
293
294	err_out_kfree:
f9101210	295	kfree(z2ram_map);
1da177e4 LT	296	err_out:
	297	return rc;
	298	}
	299
	300	static int
ab746cb9	301	z2_release(struct gendisk *disk, fmode_t mode)
1da177e4 LT	302	{
	303	if ( current_device == -1 )
	304	return 0;
	305
	306	/*
	307	* FIXME: unmap memory
	308	*/
	309
	310	return 0;
	311	}
	312
	313	static struct block_device_operations z2_fops =
	314	{
	315	.owner = THIS_MODULE,
ab746cb9 AV	316	.open = z2_open,
ab746cb9 AV	317	.release = z2_release,
1da177e4 LT	318	};
	319
	320	static struct kobject z2_find(dev_t dev, int part, void *data)
	321	{
	322	*part = 0;
	323	return get_disk(z2ram_gendisk);
	324	}
	325
	326	static struct request_queue *z2_queue;
	327
f39d88ad	328	static int __init
1da177e4 LT	329	z2_init(void)
	330	{
	331	int ret;
	332
	333	if (!MACH_IS_AMIGA)
fd5b462f	334	return -ENODEV;
1da177e4 LT	335
	336	ret = -EBUSY;
	337	if (register_blkdev(Z2RAM_MAJOR, DEVICE_NAME))
	338	goto err;
	339
	340	ret = -ENOMEM;
	341	z2ram_gendisk = alloc_disk(1);
	342	if (!z2ram_gendisk)
	343	goto out_disk;
	344
	345	z2_queue = blk_init_queue(do_z2_request, &z2ram_lock);
	346	if (!z2_queue)
	347	goto out_queue;
	348
	349	z2ram_gendisk->major = Z2RAM_MAJOR;
	350	z2ram_gendisk->first_minor = 0;
	351	z2ram_gendisk->fops = &z2_fops;
	352	sprintf(z2ram_gendisk->disk_name, "z2ram");
1da177e4 LT	353
	354	z2ram_gendisk->queue = z2_queue;
	355	add_disk(z2ram_gendisk);
	356	blk_register_region(MKDEV(Z2RAM_MAJOR, 0), Z2MINOR_COUNT, THIS_MODULE,
	357	z2_find, NULL, NULL);
	358
	359	return 0;
	360
	361	out_queue:
	362	put_disk(z2ram_gendisk);
	363	out_disk:
	364	unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
	365	err:
	366	return ret;
	367	}
	368
f39d88ad	369	static void __exit z2_exit(void)
1da177e4 LT	370	{
	371	int i, j;
	372	blk_unregister_region(MKDEV(Z2RAM_MAJOR, 0), 256);
00d59405	373	unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
1da177e4 LT	374	del_gendisk(z2ram_gendisk);
	375	put_disk(z2ram_gendisk);
	376	blk_cleanup_queue(z2_queue);
	377
	378	if ( current_device != -1 )
	379	{
	380	i = 0;
	381
	382	for ( j = 0 ; j < z2_count; j++ )
	383	{
	384	set_bit( i++, zorro_unused_z2ram );
	385	}
	386
	387	for ( j = 0 ; j < chip_count; j++ )
	388	{
	389	if ( z2ram_map[ i ] )
	390	{
	391	amiga_chip_free( (void *) z2ram_map[ i++ ] );
	392	}
	393	}
	394
	395	if ( z2ram_map != NULL )
	396	{
	397	kfree( z2ram_map );
	398	}
	399	}
	400
	401	return;
	402	}
f39d88ad AV	403
	404	module_init(z2_init);
	405	module_exit(z2_exit);
	406	MODULE_LICENSE("GPL");