[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 TRUE                  (1)
#define FALSE                 (0)

#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;

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;
}

#if defined(MODULE)

MODULE_LICENSE("GPL");

int
init_module( void )
{
    int error;
    
    error = z2_init();
    if ( error == 0 )
    {
	printk( KERN_INFO DEVICE_NAME ": loaded as module\n" );
    }
    
    return error;
}

void
cleanup_module( void )
{
    int i, j;
    blk_unregister_region(MKDEV(Z2RAM_MAJOR, 0), 256);
    if ( unregister_blkdev( Z2RAM_MAJOR, DEVICE_NAME ) != 0 )
	printk( KERN_ERR DEVICE_NAME ": unregister of device failed\n");

    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;
} 
#endif
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
	47	#define TRUE (1)
	48	#define FALSE (0)
	49
	50	#define Z2MINOR_COMBINED (0)
	51	#define Z2MINOR_Z2ONLY (1)
	52	#define Z2MINOR_CHIPONLY (2)
	53	#define Z2MINOR_MEMLIST1 (4)
	54	#define Z2MINOR_MEMLIST2 (5)
	55	#define Z2MINOR_MEMLIST3 (6)
	56	#define Z2MINOR_MEMLIST4 (7)
	57	#define Z2MINOR_COUNT (8) /* Move this down when adding a new minor */
	58
	59	#define Z2RAM_CHUNK1024 ( Z2RAM_CHUNKSIZE >> 10 )
	60
	61	static u_long *z2ram_map = NULL;
	62	static u_long z2ram_size = 0;
	63	static int z2_count = 0;
	64	static int chip_count = 0;
65	static int list_count = 0;
66	static int current_device = -1;
67
68	static DEFINE_SPINLOCK(z2ram_lock);
69
70	static struct block_device_operations z2_fops;
71	static struct gendisk *z2ram_gendisk;
72
73	static void do_z2_request(request_queue_t *q)
74	{
75	struct request *req;
76	while ((req = elv_next_request(q)) != NULL) {
77	unsigned long start = req->sector << 9;
78	unsigned long len = req->current_nr_sectors << 9;
79
80	if (start + len > z2ram_size) {
81	printk( KERN_ERR DEVICE_NAME ": bad access: block=%lu, count=%u\n",
82	req->sector, req->current_nr_sectors);
83	end_request(req, 0);
84	continue;
85	}
86	while (len) {
87	unsigned long addr = start & Z2RAM_CHUNKMASK;
88	unsigned long size = Z2RAM_CHUNKSIZE - addr;
89	if (len < size)
90	size = len;
91	addr += z2ram_map[ start >> Z2RAM_CHUNKSHIFT ];
92	if (rq_data_dir(req) == READ)
93	memcpy(req->buffer, (char *)addr, size);
94	else
95	memcpy((char *)addr, req->buffer, size);
96	start += size;
97	len -= size;
98	}
99	end_request(req, 1);
100	}
101	}
102
103	static void
104	get_z2ram( void )
105	{
106	int i;
107
108	for ( i = 0; i < Z2RAM_SIZE / Z2RAM_CHUNKSIZE; i++ )
109	{
110	if ( test_bit( i, zorro_unused_z2ram ) )
111	{
112	z2_count++;
113	z2ram_map[ z2ram_size++ ] =
114	ZTWO_VADDR( Z2RAM_START ) + ( i << Z2RAM_CHUNKSHIFT );
115	clear_bit( i, zorro_unused_z2ram );
116	}
117	}
118
119	return;
120	}
121
122	static void
123	get_chipram( void )
124	{
125
126	while ( amiga_chip_avail() > ( Z2RAM_CHUNKSIZE * 4 ) )
127	{
128	chip_count++;
129	z2ram_map[ z2ram_size ] =
130	(u_long)amiga_chip_alloc( Z2RAM_CHUNKSIZE, "z2ram" );
131
132	if ( z2ram_map[ z2ram_size ] == 0 )
133	{
134	break;
135	}
136
137	z2ram_size++;
138	}
139
140	return;
141	}
142
143	static int
144	z2_open( struct inode inode, struct file filp )
145	{
146	int device;
147	int max_z2_map = ( Z2RAM_SIZE / Z2RAM_CHUNKSIZE ) *
148	sizeof( z2ram_map[0] );
149	int max_chip_map = ( amiga_chip_size / Z2RAM_CHUNKSIZE ) *
150	sizeof( z2ram_map[0] );
151	int rc = -ENOMEM;
152
153	device = iminor(inode);
154
155	if ( current_device != -1 && current_device != device )
156	{
157	rc = -EBUSY;
158	goto err_out;
159	}
160
161	if ( current_device == -1 )
162	{
163	z2_count = 0;
164	chip_count = 0;
165	list_count = 0;
166	z2ram_size = 0;
167
168	/* Use a specific list entry. */
169	if (device >= Z2MINOR_MEMLIST1 && device <= Z2MINOR_MEMLIST4) {
170	int index = device - Z2MINOR_MEMLIST1 + 1;
171	unsigned long size, paddr, vaddr;
172
173	if (index >= m68k_realnum_memory) {
174	printk( KERN_ERR DEVICE_NAME
175	": no such entry in z2ram_map\n" );
176	goto err_out;
177	}
178
179	paddr = m68k_memory[index].addr;
180	size = m68k_memory[index].size & ~(Z2RAM_CHUNKSIZE-1);
181
182	#ifdef __powerpc__
183	/* FIXME: ioremap doesn't build correct memory tables. */
184	{
185	vfree(vmalloc (size));
186	}
187
188	vaddr = (unsigned long) __ioremap (paddr, size,
189	_PAGE_WRITETHRU);
190
191	#else
192	vaddr = (unsigned long)z_remap_nocache_nonser(paddr, size);
193	#endif
194	z2ram_map =
195	kmalloc((size/Z2RAM_CHUNKSIZE)*sizeof(z2ram_map[0]),
196	GFP_KERNEL);
197	if ( z2ram_map == NULL )
198	{
199	printk( KERN_ERR DEVICE_NAME
200	": cannot get mem for z2ram_map\n" );
201	goto err_out;
202	}
203
204	while (size) {
205	z2ram_map[ z2ram_size++ ] = vaddr;
206	size -= Z2RAM_CHUNKSIZE;
207	vaddr += Z2RAM_CHUNKSIZE;
208	list_count++;
209	}
210
211	if ( z2ram_size != 0 )
212	printk( KERN_INFO DEVICE_NAME
213	": using %iK List Entry %d Memory\n",
214	list_count * Z2RAM_CHUNK1024, index );
215	} else
216
217	switch ( device )
218	{
219	case Z2MINOR_COMBINED:
220
221	z2ram_map = kmalloc( max_z2_map + max_chip_map, GFP_KERNEL );
222	if ( z2ram_map == NULL )
223	{
224	printk( KERN_ERR DEVICE_NAME
225	": cannot get mem for z2ram_map\n" );
226	goto err_out;
227	}
228
229	get_z2ram();
230	get_chipram();
231
232	if ( z2ram_size != 0 )
233	printk( KERN_INFO DEVICE_NAME
234	": using %iK Zorro II RAM and %iK Chip RAM (Total %dK)\n",
235	z2_count * Z2RAM_CHUNK1024,
236	chip_count * Z2RAM_CHUNK1024,
237	( z2_count + chip_count ) * Z2RAM_CHUNK1024 );
238
239	break;
240
241	case Z2MINOR_Z2ONLY:
242	z2ram_map = kmalloc( max_z2_map, GFP_KERNEL );
243	if ( z2ram_map == NULL )
244	{
245	printk( KERN_ERR DEVICE_NAME
246	": cannot get mem for z2ram_map\n" );
247	goto err_out;
248	}
249
250	get_z2ram();
251
252	if ( z2ram_size != 0 )
253	printk( KERN_INFO DEVICE_NAME
254	": using %iK of Zorro II RAM\n",
255	z2_count * Z2RAM_CHUNK1024 );
256
257	break;
258
259	case Z2MINOR_CHIPONLY:
260	z2ram_map = kmalloc( max_chip_map, GFP_KERNEL );
261	if ( z2ram_map == NULL )
262	{
263	printk( KERN_ERR DEVICE_NAME
264	": cannot get mem for z2ram_map\n" );
265	goto err_out;
266	}
267
268	get_chipram();
269
270	if ( z2ram_size != 0 )
271	printk( KERN_INFO DEVICE_NAME
272	": using %iK Chip RAM\n",
273	chip_count * Z2RAM_CHUNK1024 );
274
275	break;
276
277	default:
278	rc = -ENODEV;
279	goto err_out;
280
281	break;
282	}
283
284	if ( z2ram_size == 0 )
285	{
286	printk( KERN_NOTICE DEVICE_NAME
287	": no unused ZII/Chip RAM found\n" );
288	goto err_out_kfree;
289	}
290
291	current_device = device;
292	z2ram_size <<= Z2RAM_CHUNKSHIFT;
293	set_capacity(z2ram_gendisk, z2ram_size >> 9);
294	}
295
296	return 0;
297
298	err_out_kfree:
f9101210	299	kfree(z2ram_map);
1da177e4 LT	300	err_out:
	301	return rc;
	302	}
	303
	304	static int
	305	z2_release( struct inode inode, struct file filp )
	306	{
	307	if ( current_device == -1 )
	308	return 0;
	309
	310	/*
	311	* FIXME: unmap memory
	312	*/
	313
	314	return 0;
	315	}
	316
	317	static struct block_device_operations z2_fops =
	318	{
	319	.owner = THIS_MODULE,
	320	.open = z2_open,
	321	.release = z2_release,
	322	};
	323
	324	static struct kobject z2_find(dev_t dev, int part, void *data)
	325	{
	326	*part = 0;
	327	return get_disk(z2ram_gendisk);
	328	}
	329
	330	static struct request_queue *z2_queue;
	331
	332	int __init
	333	z2_init(void)
	334	{
	335	int ret;
	336
	337	if (!MACH_IS_AMIGA)
	338	return -ENXIO;
	339
	340	ret = -EBUSY;
	341	if (register_blkdev(Z2RAM_MAJOR, DEVICE_NAME))
	342	goto err;
	343
	344	ret = -ENOMEM;
	345	z2ram_gendisk = alloc_disk(1);
	346	if (!z2ram_gendisk)
	347	goto out_disk;
	348
	349	z2_queue = blk_init_queue(do_z2_request, &z2ram_lock);
	350	if (!z2_queue)
	351	goto out_queue;
	352
	353	z2ram_gendisk->major = Z2RAM_MAJOR;
	354	z2ram_gendisk->first_minor = 0;
	355	z2ram_gendisk->fops = &z2_fops;
	356	sprintf(z2ram_gendisk->disk_name, "z2ram");
1da177e4 LT	357
	358	z2ram_gendisk->queue = z2_queue;
	359	add_disk(z2ram_gendisk);
	360	blk_register_region(MKDEV(Z2RAM_MAJOR, 0), Z2MINOR_COUNT, THIS_MODULE,
	361	z2_find, NULL, NULL);
	362
	363	return 0;
	364
	365	out_queue:
	366	put_disk(z2ram_gendisk);
	367	out_disk:
	368	unregister_blkdev(Z2RAM_MAJOR, DEVICE_NAME);
	369	err:
	370	return ret;
	371	}
	372
	373	#if defined(MODULE)
	374
	375	MODULE_LICENSE("GPL");
	376
	377	int
	378	init_module( void )
	379	{
	380	int error;
	381
	382	error = z2_init();
	383	if ( error == 0 )
	384	{
	385	printk( KERN_INFO DEVICE_NAME ": loaded as module\n" );
	386	}
	387
	388	return error;
	389	}
	390
	391	void
	392	cleanup_module( void )
	393	{
	394	int i, j;
	395	blk_unregister_region(MKDEV(Z2RAM_MAJOR, 0), 256);
	396	if ( unregister_blkdev( Z2RAM_MAJOR, DEVICE_NAME ) != 0 )
	397	printk( KERN_ERR DEVICE_NAME ": unregister of device failed\n");
	398
	399	del_gendisk(z2ram_gendisk);
	400	put_disk(z2ram_gendisk);
	401	blk_cleanup_queue(z2_queue);
	402
	403	if ( current_device != -1 )
	404	{
	405	i = 0;
	406
	407	for ( j = 0 ; j < z2_count; j++ )
	408	{
	409	set_bit( i++, zorro_unused_z2ram );
	410	}
	411
	412	for ( j = 0 ; j < chip_count; j++ )
	413	{
	414	if ( z2ram_map[ i ] )
	415	{
	416	amiga_chip_free( (void *) z2ram_map[ i++ ] );
	417	}
	418	}
	419
	420	if ( z2ram_map != NULL )
421	{
422	kfree( z2ram_map );
423	}
424	}
425
426	return;
427	}
428	#endif