[net-next-2.6.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 (Ingo.Wilken@informatik.uni-oldenburg.de)
**
** ++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(request_queue_t *q)
{
	struct request *req;
	while ((req = elv_next_request(q)) != NULL) {
		unsigned long start = req->sector << 9;
		unsigned long len  = req->current_nr_sectors << 9;

		if (start + len > z2ram_size) {
			printk( KERN_ERR DEVICE_NAME ": bad access: block=%lu, count=%u\n",
				req->sector, req->current_nr_sectors);
			end_request(req, 0);
			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;
		}
		end_request(req, 1);
	}
}

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 inode *inode, struct file *filp )
{
    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 = iminor(inode);

    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 inode *inode, struct file *filp )
{
    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 -ENXIO;

    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 (Ingo.Wilken@informatik.uni-oldenburg.de)
	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
	70	static void do_z2_request(request_queue_t *q)
	71	{
	72	struct request *req;
	73	while ((req = elv_next_request(q)) != NULL) {
	74	unsigned long start = req->sector << 9;
	75	unsigned long len = req->current_nr_sectors << 9;
	76
	77	if (start + len > z2ram_size) {
	78	printk( KERN_ERR DEVICE_NAME ": bad access: block=%lu, count=%u\n",
	79	req->sector, req->current_nr_sectors);
	80	end_request(req, 0);
	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	}
	96	end_request(req, 1);
	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
140	static int
141	z2_open( struct inode inode, struct file filp )
142	{
143	int device;
144	int max_z2_map = ( Z2RAM_SIZE / Z2RAM_CHUNKSIZE ) *
145	sizeof( z2ram_map[0] );
146	int max_chip_map = ( amiga_chip_size / Z2RAM_CHUNKSIZE ) *
147	sizeof( z2ram_map[0] );
148	int rc = -ENOMEM;
149
150	device = iminor(inode);
151
152	if ( current_device != -1 && current_device != device )
153	{
154	rc = -EBUSY;
155	goto err_out;
156	}
157
158	if ( current_device == -1 )
159	{
160	z2_count = 0;
161	chip_count = 0;
162	list_count = 0;
163	z2ram_size = 0;
164
165	/* Use a specific list entry. */
166	if (device >= Z2MINOR_MEMLIST1 && device <= Z2MINOR_MEMLIST4) {
167	int index = device - Z2MINOR_MEMLIST1 + 1;
168	unsigned long size, paddr, vaddr;
169
170	if (index >= m68k_realnum_memory) {
171	printk( KERN_ERR DEVICE_NAME
172	": no such entry in z2ram_map\n" );
173	goto err_out;
174	}
175
176	paddr = m68k_memory[index].addr;
177	size = m68k_memory[index].size & ~(Z2RAM_CHUNKSIZE-1);
178
179	#ifdef __powerpc__
180	/* FIXME: ioremap doesn't build correct memory tables. */
181	{
182	vfree(vmalloc (size));
183	}
184
185	vaddr = (unsigned long) __ioremap (paddr, size,
186	_PAGE_WRITETHRU);
187
188	#else
189	vaddr = (unsigned long)z_remap_nocache_nonser(paddr, size);
190	#endif
191	z2ram_map =
192	kmalloc((size/Z2RAM_CHUNKSIZE)*sizeof(z2ram_map[0]),
193	GFP_KERNEL);
194	if ( z2ram_map == NULL )
195	{
196	printk( KERN_ERR DEVICE_NAME
197	": cannot get mem for z2ram_map\n" );
198	goto err_out;
199	}
200
201	while (size) {
202	z2ram_map[ z2ram_size++ ] = vaddr;
203	size -= Z2RAM_CHUNKSIZE;
204	vaddr += Z2RAM_CHUNKSIZE;
205	list_count++;
206	}
207
208	if ( z2ram_size != 0 )
209	printk( KERN_INFO DEVICE_NAME
210	": using %iK List Entry %d Memory\n",
211	list_count * Z2RAM_CHUNK1024, index );
212	} else
213
214	switch ( device )
215	{
216	case Z2MINOR_COMBINED:
217
218	z2ram_map = kmalloc( max_z2_map + max_chip_map, GFP_KERNEL );
219	if ( z2ram_map == NULL )
220	{
221	printk( KERN_ERR DEVICE_NAME
222	": cannot get mem for z2ram_map\n" );
223	goto err_out;
224	}
225
226	get_z2ram();
227	get_chipram();
228
229	if ( z2ram_size != 0 )
230	printk( KERN_INFO DEVICE_NAME
231	": using %iK Zorro II RAM and %iK Chip RAM (Total %dK)\n",
232	z2_count * Z2RAM_CHUNK1024,
233	chip_count * Z2RAM_CHUNK1024,
234	( z2_count + chip_count ) * Z2RAM_CHUNK1024 );
235
236	break;
237
238	case Z2MINOR_Z2ONLY:
239	z2ram_map = kmalloc( max_z2_map, GFP_KERNEL );
240	if ( z2ram_map == NULL )
241	{
242	printk( KERN_ERR DEVICE_NAME
243	": cannot get mem for z2ram_map\n" );
244	goto err_out;
245	}
246
247	get_z2ram();
248
249	if ( z2ram_size != 0 )
250	printk( KERN_INFO DEVICE_NAME
251	": using %iK of Zorro II RAM\n",
252	z2_count * Z2RAM_CHUNK1024 );
253
254	break;
255
256	case Z2MINOR_CHIPONLY:
257	z2ram_map = kmalloc( max_chip_map, GFP_KERNEL );
258	if ( z2ram_map == NULL )
259	{
260	printk( KERN_ERR DEVICE_NAME
261	": cannot get mem for z2ram_map\n" );
262	goto err_out;
263	}
264
265	get_chipram();
266
267	if ( z2ram_size != 0 )
268	printk( KERN_INFO DEVICE_NAME
269	": using %iK Chip RAM\n",
270	chip_count * Z2RAM_CHUNK1024 );
271
272	break;
273
274	default:
275	rc = -ENODEV;
276	goto err_out;
277
278	break;
279	}
280
281	if ( z2ram_size == 0 )
282	{
283	printk( KERN_NOTICE DEVICE_NAME
284	": no unused ZII/Chip RAM found\n" );
285	goto err_out_kfree;
286	}
287
288	current_device = device;
289	z2ram_size <<= Z2RAM_CHUNKSHIFT;
290	set_capacity(z2ram_gendisk, z2ram_size >> 9);
291	}
292
293	return 0;
294
295	err_out_kfree:
f9101210	296	kfree(z2ram_map);
1da177e4 LT	297	err_out:
	298	return rc;
	299	}
	300
	301	static int
	302	z2_release( struct inode inode, struct file filp )
	303	{
	304	if ( current_device == -1 )
	305	return 0;
	306
	307	/*
	308	* FIXME: unmap memory
	309	*/
	310
	311	return 0;
	312	}
	313
	314	static struct block_device_operations z2_fops =
	315	{
	316	.owner = THIS_MODULE,
	317	.open = z2_open,
	318	.release = z2_release,
	319	};
	320
	321	static struct kobject z2_find(dev_t dev, int part, void *data)
	322	{
	323	*part = 0;
	324	return get_disk(z2ram_gendisk);
	325	}
	326
	327	static struct request_queue *z2_queue;
	328
f39d88ad	329	static int __init
1da177e4 LT	330	z2_init(void)
	331	{
	332	int ret;
	333
	334	if (!MACH_IS_AMIGA)
	335	return -ENXIO;
	336
	337	ret = -EBUSY;
	338	if (register_blkdev(Z2RAM_MAJOR, DEVICE_NAME))
	339	goto err;
	340
	341	ret = -ENOMEM;
	342	z2ram_gendisk = alloc_disk(1);
	343	if (!z2ram_gendisk)
	344	goto out_disk;
	345
	346	z2_queue = blk_init_queue(do_z2_request, &z2ram_lock);
	347	if (!z2_queue)
	348	goto out_queue;
	349
	350	z2ram_gendisk->major = Z2RAM_MAJOR;
	351	z2ram_gendisk->first_minor = 0;
	352	z2ram_gendisk->fops = &z2_fops;
	353	sprintf(z2ram_gendisk->disk_name, "z2ram");
1da177e4 LT	354
	355	z2ram_gendisk->queue = z2_queue;
	356	add_disk(z2ram_gendisk);
	357	blk_register_region(MKDEV(Z2RAM_MAJOR, 0), Z2MINOR_COUNT, THIS_MODULE,
	358	z2_find, NULL, NULL);
	359
	360	return 0;
	361
	362	out_queue:
	363	put_disk(z2ram_gendisk);
	364	out_disk:
	365	unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
	366	err:
	367	return ret;
	368	}
	369
f39d88ad	370	static void __exit z2_exit(void)
1da177e4 LT	371	{
	372	int i, j;
	373	blk_unregister_region(MKDEV(Z2RAM_MAJOR, 0), 256);
00d59405	374	unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
1da177e4 LT	375	del_gendisk(z2ram_gendisk);
	376	put_disk(z2ram_gendisk);
	377	blk_cleanup_queue(z2_queue);
	378
	379	if ( current_device != -1 )
	380	{
	381	i = 0;
	382
	383	for ( j = 0 ; j < z2_count; j++ )
	384	{
	385	set_bit( i++, zorro_unused_z2ram );
	386	}
	387
	388	for ( j = 0 ; j < chip_count; j++ )
	389	{
	390	if ( z2ram_map[ i ] )
	391	{
	392	amiga_chip_free( (void *) z2ram_map[ i++ ] );
	393	}
	394	}
	395
	396	if ( z2ram_map != NULL )
	397	{
	398	kfree( z2ram_map );
	399	}
	400	}
	401
	402	return;
	403	}
f39d88ad AV	404
	405	module_init(z2_init);
	406	module_exit(z2_exit);
	407	MODULE_LICENSE("GPL");