blob: 6abdde4da2b7834991a8e4e0b3feb52e0e054993 [file] [log] [blame]
Geert Uytterhoevenf9652632007-07-21 04:37:48 -07001/*
2 * PS3 FLASH ROM Storage Driver
3 *
4 * Copyright (C) 2007 Sony Computer Entertainment Inc.
5 * Copyright 2007 Sony Corp.
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published
9 * by the Free Software Foundation; version 2 of the License.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 */
20
21#include <linux/fs.h>
22#include <linux/miscdevice.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090023#include <linux/slab.h>
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070024#include <linux/uaccess.h>
Paul Gortmakerc22405c2011-07-03 13:35:48 -040025#include <linux/module.h>
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070026
27#include <asm/lv1call.h>
28#include <asm/ps3stor.h>
29
30
31#define DEVICE_NAME "ps3flash"
32
33#define FLASH_BLOCK_SIZE (256*1024)
34
35
36struct ps3flash_private {
37 struct mutex mutex; /* Bounce buffer mutex */
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000038 u64 chunk_sectors;
39 int tag; /* Start sector of buffer, -1 if invalid */
40 bool dirty;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070041};
42
43static struct ps3_storage_device *ps3flash_dev;
44
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000045static int ps3flash_read_write_sectors(struct ps3_storage_device *dev,
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +000046 u64 start_sector, int write)
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070047{
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +000048 struct ps3flash_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
49 u64 res = ps3stor_read_write_sectors(dev, dev->bounce_lpar,
50 start_sector, priv->chunk_sectors,
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070051 write);
52 if (res) {
Stephen Rothwell4c33d2d2009-01-13 20:06:02 +000053 dev_err(&dev->sbd.core, "%s:%u: %s failed 0x%llx\n", __func__,
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070054 __LINE__, write ? "write" : "read", res);
55 return -EIO;
56 }
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000057 return 0;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070058}
59
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000060static int ps3flash_writeback(struct ps3_storage_device *dev)
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070061{
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000062 struct ps3flash_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
63 int res;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070064
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000065 if (!priv->dirty || priv->tag < 0)
66 return 0;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070067
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +000068 res = ps3flash_read_write_sectors(dev, priv->tag, 1);
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000069 if (res)
70 return res;
71
72 priv->dirty = false;
73 return 0;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070074}
75
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +000076static int ps3flash_fetch(struct ps3_storage_device *dev, u64 start_sector)
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070077{
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000078 struct ps3flash_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000079 int res;
80
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +000081 if (start_sector == priv->tag)
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000082 return 0;
83
84 res = ps3flash_writeback(dev);
85 if (res)
86 return res;
87
88 priv->tag = -1;
89
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +000090 res = ps3flash_read_write_sectors(dev, start_sector, 0);
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000091 if (res)
92 return res;
93
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +000094 priv->tag = start_sector;
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +000095 return 0;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -070096}
97
98static loff_t ps3flash_llseek(struct file *file, loff_t offset, int origin)
99{
100 struct ps3_storage_device *dev = ps3flash_dev;
101 loff_t res;
102
103 mutex_lock(&file->f_mapping->host->i_mutex);
104 switch (origin) {
Josef Bacik22735062011-07-18 13:21:39 -0400105 case 0:
106 break;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700107 case 1:
108 offset += file->f_pos;
109 break;
110 case 2:
111 offset += dev->regions[dev->region_idx].size*dev->blk_size;
112 break;
Josef Bacik22735062011-07-18 13:21:39 -0400113 default:
114 offset = -1;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700115 }
116 if (offset < 0) {
117 res = -EINVAL;
118 goto out;
119 }
120
121 file->f_pos = offset;
122 res = file->f_pos;
123
124out:
125 mutex_unlock(&file->f_mapping->host->i_mutex);
126 return res;
127}
128
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000129static ssize_t ps3flash_read(char __user *userbuf, void *kernelbuf,
130 size_t count, loff_t *pos)
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700131{
132 struct ps3_storage_device *dev = ps3flash_dev;
Geert Uytterhoeven559dc872009-06-10 04:38:55 +0000133 struct ps3flash_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +0000134 u64 size, sector, offset;
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000135 int res;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700136 size_t remaining, n;
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000137 const void *src;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700138
139 dev_dbg(&dev->sbd.core,
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000140 "%s:%u: Reading %zu bytes at position %lld to U0x%p/K0x%p\n",
141 __func__, __LINE__, count, *pos, userbuf, kernelbuf);
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700142
143 size = dev->regions[dev->region_idx].size*dev->blk_size;
144 if (*pos >= size || !count)
145 return 0;
146
147 if (*pos + count > size) {
148 dev_dbg(&dev->sbd.core,
149 "%s:%u Truncating count from %zu to %llu\n", __func__,
150 __LINE__, count, size - *pos);
151 count = size - *pos;
152 }
153
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +0000154 sector = *pos / dev->bounce_size * priv->chunk_sectors;
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000155 offset = *pos % dev->bounce_size;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700156
157 remaining = count;
158 do {
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +0000159 n = min_t(u64, remaining, dev->bounce_size - offset);
160 src = dev->bounce_buf + offset;
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000161
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700162 mutex_lock(&priv->mutex);
163
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +0000164 res = ps3flash_fetch(dev, sector);
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000165 if (res)
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700166 goto fail;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700167
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700168 dev_dbg(&dev->sbd.core,
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000169 "%s:%u: copy %lu bytes from 0x%p to U0x%p/K0x%p\n",
170 __func__, __LINE__, n, src, userbuf, kernelbuf);
171 if (userbuf) {
172 if (copy_to_user(userbuf, src, n)) {
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000173 res = -EFAULT;
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000174 goto fail;
175 }
176 userbuf += n;
177 }
178 if (kernelbuf) {
179 memcpy(kernelbuf, src, n);
180 kernelbuf += n;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700181 }
182
183 mutex_unlock(&priv->mutex);
184
185 *pos += n;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700186 remaining -= n;
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +0000187 sector += priv->chunk_sectors;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700188 offset = 0;
189 } while (remaining > 0);
190
191 return count;
192
193fail:
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000194 mutex_unlock(&priv->mutex);
195 return res;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700196}
197
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000198static ssize_t ps3flash_write(const char __user *userbuf,
199 const void *kernelbuf, size_t count, loff_t *pos)
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700200{
201 struct ps3_storage_device *dev = ps3flash_dev;
Geert Uytterhoeven559dc872009-06-10 04:38:55 +0000202 struct ps3flash_private *priv = ps3_system_bus_get_drvdata(&dev->sbd);
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000203 u64 size, sector, offset;
204 int res = 0;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700205 size_t remaining, n;
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000206 void *dst;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700207
208 dev_dbg(&dev->sbd.core,
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000209 "%s:%u: Writing %zu bytes at position %lld from U0x%p/K0x%p\n",
210 __func__, __LINE__, count, *pos, userbuf, kernelbuf);
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700211
212 size = dev->regions[dev->region_idx].size*dev->blk_size;
213 if (*pos >= size || !count)
214 return 0;
215
216 if (*pos + count > size) {
217 dev_dbg(&dev->sbd.core,
218 "%s:%u Truncating count from %zu to %llu\n", __func__,
219 __LINE__, count, size - *pos);
220 count = size - *pos;
221 }
222
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000223 sector = *pos / dev->bounce_size * priv->chunk_sectors;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700224 offset = *pos % dev->bounce_size;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700225
226 remaining = count;
227 do {
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000228 n = min_t(u64, remaining, dev->bounce_size - offset);
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +0000229 dst = dev->bounce_buf + offset;
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000230
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700231 mutex_lock(&priv->mutex);
232
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000233 if (n != dev->bounce_size)
Geert Uytterhoeven42e27bf2009-06-10 04:39:08 +0000234 res = ps3flash_fetch(dev, sector);
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000235 else if (sector != priv->tag)
236 res = ps3flash_writeback(dev);
237 if (res)
238 goto fail;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700239
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700240 dev_dbg(&dev->sbd.core,
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000241 "%s:%u: copy %lu bytes from U0x%p/K0x%p to 0x%p\n",
242 __func__, __LINE__, n, userbuf, kernelbuf, dst);
243 if (userbuf) {
244 if (copy_from_user(dst, userbuf, n)) {
245 res = -EFAULT;
246 goto fail;
247 }
248 userbuf += n;
249 }
250 if (kernelbuf) {
251 memcpy(dst, kernelbuf, n);
252 kernelbuf += n;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700253 }
254
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000255 priv->tag = sector;
256 priv->dirty = true;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700257
258 mutex_unlock(&priv->mutex);
259
260 *pos += n;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700261 remaining -= n;
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000262 sector += priv->chunk_sectors;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700263 offset = 0;
264 } while (remaining > 0);
265
266 return count;
267
268fail:
269 mutex_unlock(&priv->mutex);
270 return res;
271}
272
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000273static ssize_t ps3flash_user_read(struct file *file, char __user *buf,
274 size_t count, loff_t *pos)
275{
276 return ps3flash_read(buf, NULL, count, pos);
277}
278
279static ssize_t ps3flash_user_write(struct file *file, const char __user *buf,
280 size_t count, loff_t *pos)
281{
282 return ps3flash_write(buf, NULL, count, pos);
283}
284
285static ssize_t ps3flash_kernel_read(void *buf, size_t count, loff_t pos)
286{
287 return ps3flash_read(NULL, buf, count, &pos);
288}
289
290static ssize_t ps3flash_kernel_write(const void *buf, size_t count,
291 loff_t pos)
292{
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000293 ssize_t res;
294 int wb;
295
296 res = ps3flash_write(NULL, buf, count, &pos);
297 if (res < 0)
298 return res;
299
300 /* Make kernel writes synchronous */
301 wb = ps3flash_writeback(ps3flash_dev);
302 if (wb)
303 return wb;
304
305 return res;
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000306}
307
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000308static int ps3flash_flush(struct file *file, fl_owner_t id)
309{
310 return ps3flash_writeback(ps3flash_dev);
311}
312
Josef Bacik02c24a82011-07-16 20:44:56 -0400313static int ps3flash_fsync(struct file *file, loff_t start, loff_t end, int datasync)
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000314{
Josef Bacik02c24a82011-07-16 20:44:56 -0400315 struct inode *inode = file->f_path.dentry->d_inode;
316 int err;
317 mutex_lock(&inode->i_mutex);
318 err = ps3flash_writeback(ps3flash_dev);
319 mutex_unlock(&inode->i_mutex);
320 return err;
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000321}
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700322
323static irqreturn_t ps3flash_interrupt(int irq, void *data)
324{
325 struct ps3_storage_device *dev = data;
326 int res;
327 u64 tag, status;
328
329 res = lv1_storage_get_async_status(dev->sbd.dev_id, &tag, &status);
330
331 if (tag != dev->tag)
332 dev_err(&dev->sbd.core,
Stephen Rothwell4c33d2d2009-01-13 20:06:02 +0000333 "%s:%u: tag mismatch, got %llx, expected %llx\n",
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700334 __func__, __LINE__, tag, dev->tag);
335
336 if (res) {
Stephen Rothwell4c33d2d2009-01-13 20:06:02 +0000337 dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%llx\n",
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700338 __func__, __LINE__, res, status);
339 } else {
340 dev->lv1_status = status;
341 complete(&dev->done);
342 }
343 return IRQ_HANDLED;
344}
345
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700346static const struct file_operations ps3flash_fops = {
347 .owner = THIS_MODULE,
348 .llseek = ps3flash_llseek,
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000349 .read = ps3flash_user_read,
350 .write = ps3flash_user_write,
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000351 .flush = ps3flash_flush,
352 .fsync = ps3flash_fsync,
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000353};
354
355static const struct ps3_os_area_flash_ops ps3flash_kernel_ops = {
356 .read = ps3flash_kernel_read,
357 .write = ps3flash_kernel_write,
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700358};
359
360static struct miscdevice ps3flash_misc = {
361 .minor = MISC_DYNAMIC_MINOR,
362 .name = DEVICE_NAME,
363 .fops = &ps3flash_fops,
364};
365
366static int __devinit ps3flash_probe(struct ps3_system_bus_device *_dev)
367{
368 struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core);
369 struct ps3flash_private *priv;
370 int error;
371 unsigned long tmp;
372
373 tmp = dev->regions[dev->region_idx].start*dev->blk_size;
374 if (tmp % FLASH_BLOCK_SIZE) {
375 dev_err(&dev->sbd.core,
376 "%s:%u region start %lu is not aligned\n", __func__,
377 __LINE__, tmp);
378 return -EINVAL;
379 }
380 tmp = dev->regions[dev->region_idx].size*dev->blk_size;
381 if (tmp % FLASH_BLOCK_SIZE) {
382 dev_err(&dev->sbd.core,
383 "%s:%u region size %lu is not aligned\n", __func__,
384 __LINE__, tmp);
385 return -EINVAL;
386 }
387
388 /* use static buffer, kmalloc cannot allocate 256 KiB */
389 if (!ps3flash_bounce_buffer.address)
390 return -ENODEV;
391
392 if (ps3flash_dev) {
393 dev_err(&dev->sbd.core,
394 "Only one FLASH device is supported\n");
395 return -EBUSY;
396 }
397
398 ps3flash_dev = dev;
399
400 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
401 if (!priv) {
402 error = -ENOMEM;
403 goto fail;
404 }
405
Geert Uytterhoeven559dc872009-06-10 04:38:55 +0000406 ps3_system_bus_set_drvdata(&dev->sbd, priv);
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700407 mutex_init(&priv->mutex);
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000408 priv->tag = -1;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700409
410 dev->bounce_size = ps3flash_bounce_buffer.size;
411 dev->bounce_buf = ps3flash_bounce_buffer.address;
Geert Uytterhoeven6bd57f22009-06-10 04:39:07 +0000412 priv->chunk_sectors = dev->bounce_size / dev->blk_size;
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700413
414 error = ps3stor_setup(dev, ps3flash_interrupt);
415 if (error)
416 goto fail_free_priv;
417
418 ps3flash_misc.parent = &dev->sbd.core;
419 error = misc_register(&ps3flash_misc);
420 if (error) {
421 dev_err(&dev->sbd.core, "%s:%u: misc_register failed %d\n",
422 __func__, __LINE__, error);
423 goto fail_teardown;
424 }
425
426 dev_info(&dev->sbd.core, "%s:%u: registered misc device %d\n",
427 __func__, __LINE__, ps3flash_misc.minor);
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000428
429 ps3_os_area_flash_register(&ps3flash_kernel_ops);
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700430 return 0;
431
432fail_teardown:
433 ps3stor_teardown(dev);
434fail_free_priv:
435 kfree(priv);
Geert Uytterhoeven559dc872009-06-10 04:38:55 +0000436 ps3_system_bus_set_drvdata(&dev->sbd, NULL);
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700437fail:
438 ps3flash_dev = NULL;
439 return error;
440}
441
442static int ps3flash_remove(struct ps3_system_bus_device *_dev)
443{
444 struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core);
445
Geert Uytterhoevena4e623f2009-06-10 04:39:06 +0000446 ps3_os_area_flash_register(NULL);
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700447 misc_deregister(&ps3flash_misc);
448 ps3stor_teardown(dev);
Geert Uytterhoeven559dc872009-06-10 04:38:55 +0000449 kfree(ps3_system_bus_get_drvdata(&dev->sbd));
450 ps3_system_bus_set_drvdata(&dev->sbd, NULL);
Geert Uytterhoevenf9652632007-07-21 04:37:48 -0700451 ps3flash_dev = NULL;
452 return 0;
453}
454
455
456static struct ps3_system_bus_driver ps3flash = {
457 .match_id = PS3_MATCH_ID_STOR_FLASH,
458 .core.name = DEVICE_NAME,
459 .core.owner = THIS_MODULE,
460 .probe = ps3flash_probe,
461 .remove = ps3flash_remove,
462 .shutdown = ps3flash_remove,
463};
464
465
466static int __init ps3flash_init(void)
467{
468 return ps3_system_bus_driver_register(&ps3flash);
469}
470
471static void __exit ps3flash_exit(void)
472{
473 ps3_system_bus_driver_unregister(&ps3flash);
474}
475
476module_init(ps3flash_init);
477module_exit(ps3flash_exit);
478
479MODULE_LICENSE("GPL");
480MODULE_DESCRIPTION("PS3 FLASH ROM Storage Driver");
481MODULE_AUTHOR("Sony Corporation");
482MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_FLASH);