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c6131fa5 GU |
1 | /* |
2 | * PS3 Disk 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/ata.h> | |
22 | #include <linux/blkdev.h> | |
23 | ||
24 | #include <asm/lv1call.h> | |
25 | #include <asm/ps3stor.h> | |
26 | #include <asm/firmware.h> | |
27 | ||
28 | ||
29 | #define DEVICE_NAME "ps3disk" | |
30 | ||
31 | #define BOUNCE_SIZE (64*1024) | |
32 | ||
33 | #define PS3DISK_MAX_DISKS 16 | |
34 | #define PS3DISK_MINORS 16 | |
35 | ||
36 | ||
37 | #define PS3DISK_NAME "ps3d%c" | |
38 | ||
39 | ||
40 | struct ps3disk_private { | |
41 | spinlock_t lock; /* Request queue spinlock */ | |
42 | struct request_queue *queue; | |
43 | struct gendisk *gendisk; | |
44 | unsigned int blocking_factor; | |
45 | struct request *req; | |
46 | u64 raw_capacity; | |
47 | unsigned char model[ATA_ID_PROD_LEN+1]; | |
48 | }; | |
49 | ||
50 | ||
51 | #define LV1_STORAGE_SEND_ATA_COMMAND (2) | |
52 | #define LV1_STORAGE_ATA_HDDOUT (0x23) | |
53 | ||
54 | struct lv1_ata_cmnd_block { | |
55 | u16 features; | |
56 | u16 sector_count; | |
57 | u16 LBA_low; | |
58 | u16 LBA_mid; | |
59 | u16 LBA_high; | |
60 | u8 device; | |
61 | u8 command; | |
62 | u32 is_ext; | |
63 | u32 proto; | |
64 | u32 in_out; | |
65 | u32 size; | |
66 | u64 buffer; | |
67 | u32 arglen; | |
68 | }; | |
69 | ||
70 | enum lv1_ata_proto { | |
71 | NON_DATA_PROTO = 0, | |
72 | PIO_DATA_IN_PROTO = 1, | |
73 | PIO_DATA_OUT_PROTO = 2, | |
74 | DMA_PROTO = 3 | |
75 | }; | |
76 | ||
77 | enum lv1_ata_in_out { | |
78 | DIR_WRITE = 0, /* memory -> device */ | |
79 | DIR_READ = 1 /* device -> memory */ | |
80 | }; | |
81 | ||
82 | static int ps3disk_major; | |
83 | ||
84 | ||
85 | static struct block_device_operations ps3disk_fops = { | |
86 | .owner = THIS_MODULE, | |
87 | }; | |
88 | ||
89 | ||
90 | static void ps3disk_scatter_gather(struct ps3_storage_device *dev, | |
91 | struct request *req, int gather) | |
92 | { | |
93 | unsigned int offset = 0; | |
5705f702 | 94 | struct req_iterator iter; |
c6131fa5 | 95 | struct bio_vec *bvec; |
5705f702 | 96 | unsigned int i = 0; |
c6131fa5 GU |
97 | size_t size; |
98 | void *buf; | |
99 | ||
5705f702 N |
100 | rq_for_each_segment(bvec, req, iter) { |
101 | unsigned long flags; | |
c6131fa5 GU |
102 | dev_dbg(&dev->sbd.core, |
103 | "%s:%u: bio %u: %u segs %u sectors from %lu\n", | |
5705f702 N |
104 | __func__, __LINE__, i, bio_segments(iter.bio), |
105 | bio_sectors(iter.bio), | |
106 | (unsigned long)iter.bio->bi_sector); | |
107 | ||
c6131fa5 | 108 | size = bvec->bv_len; |
5705f702 | 109 | buf = bvec_kmap_irq(bvec, &flags); |
c6131fa5 GU |
110 | if (gather) |
111 | memcpy(dev->bounce_buf+offset, buf, size); | |
112 | else | |
113 | memcpy(buf, dev->bounce_buf+offset, size); | |
114 | offset += size; | |
5705f702 N |
115 | flush_kernel_dcache_page(bvec->bv_page); |
116 | bvec_kunmap_irq(bvec, &flags); | |
117 | ||
c6131fa5 GU |
118 | i++; |
119 | } | |
120 | } | |
121 | ||
122 | static int ps3disk_submit_request_sg(struct ps3_storage_device *dev, | |
123 | struct request *req) | |
124 | { | |
125 | struct ps3disk_private *priv = dev->sbd.core.driver_data; | |
126 | int write = rq_data_dir(req), res; | |
127 | const char *op = write ? "write" : "read"; | |
128 | u64 start_sector, sectors; | |
129 | unsigned int region_id = dev->regions[dev->region_idx].id; | |
130 | ||
131 | #ifdef DEBUG | |
132 | unsigned int n = 0; | |
5705f702 N |
133 | struct bio_vec *bv; |
134 | struct req_iterator iter; | |
c6131fa5 | 135 | |
5705f702 | 136 | rq_for_each_segment(bv, req, iter) |
c6131fa5 GU |
137 | n++; |
138 | dev_dbg(&dev->sbd.core, | |
5705f702 | 139 | "%s:%u: %s req has %u bvecs for %lu sectors %lu hard sectors\n", |
c6131fa5 GU |
140 | __func__, __LINE__, op, n, req->nr_sectors, |
141 | req->hard_nr_sectors); | |
142 | #endif | |
143 | ||
144 | start_sector = req->sector * priv->blocking_factor; | |
145 | sectors = req->nr_sectors * priv->blocking_factor; | |
146 | dev_dbg(&dev->sbd.core, "%s:%u: %s %lu sectors starting at %lu\n", | |
147 | __func__, __LINE__, op, sectors, start_sector); | |
148 | ||
149 | if (write) { | |
150 | ps3disk_scatter_gather(dev, req, 1); | |
151 | ||
152 | res = lv1_storage_write(dev->sbd.dev_id, region_id, | |
153 | start_sector, sectors, 0, | |
154 | dev->bounce_lpar, &dev->tag); | |
155 | } else { | |
156 | res = lv1_storage_read(dev->sbd.dev_id, region_id, | |
157 | start_sector, sectors, 0, | |
158 | dev->bounce_lpar, &dev->tag); | |
159 | } | |
160 | if (res) { | |
161 | dev_err(&dev->sbd.core, "%s:%u: %s failed %d\n", __func__, | |
162 | __LINE__, op, res); | |
163 | end_request(req, 0); | |
164 | return 0; | |
165 | } | |
166 | ||
167 | priv->req = req; | |
168 | return 1; | |
169 | } | |
170 | ||
171 | static int ps3disk_submit_flush_request(struct ps3_storage_device *dev, | |
172 | struct request *req) | |
173 | { | |
174 | struct ps3disk_private *priv = dev->sbd.core.driver_data; | |
175 | u64 res; | |
176 | ||
177 | dev_dbg(&dev->sbd.core, "%s:%u: flush request\n", __func__, __LINE__); | |
178 | ||
179 | res = lv1_storage_send_device_command(dev->sbd.dev_id, | |
180 | LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, | |
181 | 0, &dev->tag); | |
182 | if (res) { | |
183 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%lx\n", | |
184 | __func__, __LINE__, res); | |
185 | end_request(req, 0); | |
186 | return 0; | |
187 | } | |
188 | ||
189 | priv->req = req; | |
190 | return 1; | |
191 | } | |
192 | ||
193 | static void ps3disk_do_request(struct ps3_storage_device *dev, | |
165125e1 | 194 | struct request_queue *q) |
c6131fa5 GU |
195 | { |
196 | struct request *req; | |
197 | ||
198 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); | |
199 | ||
200 | while ((req = elv_next_request(q))) { | |
201 | if (blk_fs_request(req)) { | |
202 | if (ps3disk_submit_request_sg(dev, req)) | |
203 | break; | |
204 | } else if (req->cmd_type == REQ_TYPE_FLUSH) { | |
205 | if (ps3disk_submit_flush_request(dev, req)) | |
206 | break; | |
207 | } else { | |
208 | blk_dump_rq_flags(req, DEVICE_NAME " bad request"); | |
209 | end_request(req, 0); | |
210 | continue; | |
211 | } | |
212 | } | |
213 | } | |
214 | ||
165125e1 | 215 | static void ps3disk_request(struct request_queue *q) |
c6131fa5 GU |
216 | { |
217 | struct ps3_storage_device *dev = q->queuedata; | |
218 | struct ps3disk_private *priv = dev->sbd.core.driver_data; | |
219 | ||
220 | if (priv->req) { | |
221 | dev_dbg(&dev->sbd.core, "%s:%u busy\n", __func__, __LINE__); | |
222 | return; | |
223 | } | |
224 | ||
225 | ps3disk_do_request(dev, q); | |
226 | } | |
227 | ||
228 | static irqreturn_t ps3disk_interrupt(int irq, void *data) | |
229 | { | |
230 | struct ps3_storage_device *dev = data; | |
231 | struct ps3disk_private *priv; | |
232 | struct request *req; | |
233 | int res, read, uptodate; | |
234 | u64 tag, status; | |
235 | unsigned long num_sectors; | |
236 | const char *op; | |
237 | ||
238 | res = lv1_storage_get_async_status(dev->sbd.dev_id, &tag, &status); | |
239 | ||
240 | if (tag != dev->tag) | |
241 | dev_err(&dev->sbd.core, | |
242 | "%s:%u: tag mismatch, got %lx, expected %lx\n", | |
243 | __func__, __LINE__, tag, dev->tag); | |
244 | ||
245 | if (res) { | |
246 | dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%lx\n", | |
247 | __func__, __LINE__, res, status); | |
248 | return IRQ_HANDLED; | |
249 | } | |
250 | ||
251 | priv = dev->sbd.core.driver_data; | |
252 | req = priv->req; | |
253 | if (!req) { | |
254 | dev_dbg(&dev->sbd.core, | |
255 | "%s:%u non-block layer request completed\n", __func__, | |
256 | __LINE__); | |
257 | dev->lv1_status = status; | |
258 | complete(&dev->done); | |
259 | return IRQ_HANDLED; | |
260 | } | |
261 | ||
262 | if (req->cmd_type == REQ_TYPE_FLUSH) { | |
263 | read = 0; | |
264 | num_sectors = req->hard_cur_sectors; | |
265 | op = "flush"; | |
266 | } else { | |
267 | read = !rq_data_dir(req); | |
268 | num_sectors = req->nr_sectors; | |
269 | op = read ? "read" : "write"; | |
270 | } | |
271 | if (status) { | |
272 | dev_dbg(&dev->sbd.core, "%s:%u: %s failed 0x%lx\n", __func__, | |
273 | __LINE__, op, status); | |
274 | uptodate = 0; | |
275 | } else { | |
276 | dev_dbg(&dev->sbd.core, "%s:%u: %s completed\n", __func__, | |
277 | __LINE__, op); | |
278 | uptodate = 1; | |
279 | if (read) | |
280 | ps3disk_scatter_gather(dev, req, 0); | |
281 | } | |
282 | ||
283 | spin_lock(&priv->lock); | |
284 | if (!end_that_request_first(req, uptodate, num_sectors)) { | |
285 | add_disk_randomness(req->rq_disk); | |
286 | blkdev_dequeue_request(req); | |
287 | end_that_request_last(req, uptodate); | |
288 | } | |
289 | priv->req = NULL; | |
290 | ps3disk_do_request(dev, priv->queue); | |
291 | spin_unlock(&priv->lock); | |
292 | ||
293 | return IRQ_HANDLED; | |
294 | } | |
295 | ||
296 | static int ps3disk_sync_cache(struct ps3_storage_device *dev) | |
297 | { | |
298 | u64 res; | |
299 | ||
300 | dev_dbg(&dev->sbd.core, "%s:%u: sync cache\n", __func__, __LINE__); | |
301 | ||
302 | res = ps3stor_send_command(dev, LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, 0); | |
303 | if (res) { | |
304 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%lx\n", | |
305 | __func__, __LINE__, res); | |
306 | return -EIO; | |
307 | } | |
308 | return 0; | |
309 | } | |
310 | ||
311 | ||
312 | /* ATA helpers copied from drivers/ata/libata-core.c */ | |
313 | ||
314 | static void swap_buf_le16(u16 *buf, unsigned int buf_words) | |
315 | { | |
316 | #ifdef __BIG_ENDIAN | |
317 | unsigned int i; | |
318 | ||
319 | for (i = 0; i < buf_words; i++) | |
320 | buf[i] = le16_to_cpu(buf[i]); | |
321 | #endif /* __BIG_ENDIAN */ | |
322 | } | |
323 | ||
324 | static u64 ata_id_n_sectors(const u16 *id) | |
325 | { | |
326 | if (ata_id_has_lba(id)) { | |
327 | if (ata_id_has_lba48(id)) | |
328 | return ata_id_u64(id, 100); | |
329 | else | |
330 | return ata_id_u32(id, 60); | |
331 | } else { | |
332 | if (ata_id_current_chs_valid(id)) | |
333 | return ata_id_u32(id, 57); | |
334 | else | |
335 | return id[1] * id[3] * id[6]; | |
336 | } | |
337 | } | |
338 | ||
339 | static void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, | |
340 | unsigned int len) | |
341 | { | |
342 | unsigned int c; | |
343 | ||
344 | while (len > 0) { | |
345 | c = id[ofs] >> 8; | |
346 | *s = c; | |
347 | s++; | |
348 | ||
349 | c = id[ofs] & 0xff; | |
350 | *s = c; | |
351 | s++; | |
352 | ||
353 | ofs++; | |
354 | len -= 2; | |
355 | } | |
356 | } | |
357 | ||
358 | static void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, | |
359 | unsigned int len) | |
360 | { | |
361 | unsigned char *p; | |
362 | ||
363 | WARN_ON(!(len & 1)); | |
364 | ||
365 | ata_id_string(id, s, ofs, len - 1); | |
366 | ||
367 | p = s + strnlen(s, len - 1); | |
368 | while (p > s && p[-1] == ' ') | |
369 | p--; | |
370 | *p = '\0'; | |
371 | } | |
372 | ||
373 | static int ps3disk_identify(struct ps3_storage_device *dev) | |
374 | { | |
375 | struct ps3disk_private *priv = dev->sbd.core.driver_data; | |
376 | struct lv1_ata_cmnd_block ata_cmnd; | |
377 | u16 *id = dev->bounce_buf; | |
378 | u64 res; | |
379 | ||
380 | dev_dbg(&dev->sbd.core, "%s:%u: identify disk\n", __func__, __LINE__); | |
381 | ||
382 | memset(&ata_cmnd, 0, sizeof(struct lv1_ata_cmnd_block)); | |
383 | ata_cmnd.command = ATA_CMD_ID_ATA; | |
384 | ata_cmnd.sector_count = 1; | |
385 | ata_cmnd.size = ata_cmnd.arglen = ATA_ID_WORDS * 2; | |
386 | ata_cmnd.buffer = dev->bounce_lpar; | |
387 | ata_cmnd.proto = PIO_DATA_IN_PROTO; | |
388 | ata_cmnd.in_out = DIR_READ; | |
389 | ||
390 | res = ps3stor_send_command(dev, LV1_STORAGE_SEND_ATA_COMMAND, | |
391 | ps3_mm_phys_to_lpar(__pa(&ata_cmnd)), | |
392 | sizeof(ata_cmnd), ata_cmnd.buffer, | |
393 | ata_cmnd.arglen); | |
394 | if (res) { | |
395 | dev_err(&dev->sbd.core, "%s:%u: identify disk failed 0x%lx\n", | |
396 | __func__, __LINE__, res); | |
397 | return -EIO; | |
398 | } | |
399 | ||
400 | swap_buf_le16(id, ATA_ID_WORDS); | |
401 | ||
402 | /* All we're interested in are raw capacity and model name */ | |
403 | priv->raw_capacity = ata_id_n_sectors(id); | |
404 | ata_id_c_string(id, priv->model, ATA_ID_PROD, sizeof(priv->model)); | |
405 | return 0; | |
406 | } | |
407 | ||
165125e1 | 408 | static void ps3disk_prepare_flush(struct request_queue *q, struct request *req) |
c6131fa5 GU |
409 | { |
410 | struct ps3_storage_device *dev = q->queuedata; | |
411 | ||
412 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); | |
413 | ||
414 | memset(req->cmd, 0, sizeof(req->cmd)); | |
415 | req->cmd_type = REQ_TYPE_FLUSH; | |
416 | } | |
417 | ||
165125e1 | 418 | static int ps3disk_issue_flush(struct request_queue *q, struct gendisk *gendisk, |
c6131fa5 GU |
419 | sector_t *sector) |
420 | { | |
421 | struct ps3_storage_device *dev = q->queuedata; | |
422 | struct request *req; | |
423 | int res; | |
424 | ||
425 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); | |
426 | ||
427 | req = blk_get_request(q, WRITE, __GFP_WAIT); | |
428 | ps3disk_prepare_flush(q, req); | |
429 | res = blk_execute_rq(q, gendisk, req, 0); | |
430 | if (res) | |
431 | dev_err(&dev->sbd.core, "%s:%u: flush request failed %d\n", | |
432 | __func__, __LINE__, res); | |
433 | blk_put_request(req); | |
434 | return res; | |
435 | } | |
436 | ||
437 | ||
438 | static unsigned long ps3disk_mask; | |
439 | ||
440 | static DEFINE_MUTEX(ps3disk_mask_mutex); | |
441 | ||
442 | static int __devinit ps3disk_probe(struct ps3_system_bus_device *_dev) | |
443 | { | |
444 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); | |
445 | struct ps3disk_private *priv; | |
446 | int error; | |
447 | unsigned int devidx; | |
448 | struct request_queue *queue; | |
449 | struct gendisk *gendisk; | |
450 | ||
451 | if (dev->blk_size < 512) { | |
452 | dev_err(&dev->sbd.core, | |
453 | "%s:%u: cannot handle block size %lu\n", __func__, | |
454 | __LINE__, dev->blk_size); | |
455 | return -EINVAL; | |
456 | } | |
457 | ||
458 | BUILD_BUG_ON(PS3DISK_MAX_DISKS > BITS_PER_LONG); | |
459 | mutex_lock(&ps3disk_mask_mutex); | |
460 | devidx = find_first_zero_bit(&ps3disk_mask, PS3DISK_MAX_DISKS); | |
461 | if (devidx >= PS3DISK_MAX_DISKS) { | |
462 | dev_err(&dev->sbd.core, "%s:%u: Too many disks\n", __func__, | |
463 | __LINE__); | |
464 | mutex_unlock(&ps3disk_mask_mutex); | |
465 | return -ENOSPC; | |
466 | } | |
467 | __set_bit(devidx, &ps3disk_mask); | |
468 | mutex_unlock(&ps3disk_mask_mutex); | |
469 | ||
470 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
471 | if (!priv) { | |
472 | error = -ENOMEM; | |
473 | goto fail; | |
474 | } | |
475 | ||
476 | dev->sbd.core.driver_data = priv; | |
477 | spin_lock_init(&priv->lock); | |
478 | ||
479 | dev->bounce_size = BOUNCE_SIZE; | |
480 | dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA); | |
481 | if (!dev->bounce_buf) { | |
482 | error = -ENOMEM; | |
483 | goto fail_free_priv; | |
484 | } | |
485 | ||
486 | error = ps3stor_setup(dev, ps3disk_interrupt); | |
487 | if (error) | |
488 | goto fail_free_bounce; | |
489 | ||
490 | ps3disk_identify(dev); | |
491 | ||
492 | queue = blk_init_queue(ps3disk_request, &priv->lock); | |
493 | if (!queue) { | |
494 | dev_err(&dev->sbd.core, "%s:%u: blk_init_queue failed\n", | |
495 | __func__, __LINE__); | |
496 | error = -ENOMEM; | |
497 | goto fail_teardown; | |
498 | } | |
499 | ||
500 | priv->queue = queue; | |
501 | queue->queuedata = dev; | |
502 | ||
503 | blk_queue_bounce_limit(queue, BLK_BOUNCE_HIGH); | |
504 | ||
505 | blk_queue_max_sectors(queue, dev->bounce_size >> 9); | |
506 | blk_queue_segment_boundary(queue, -1UL); | |
507 | blk_queue_dma_alignment(queue, dev->blk_size-1); | |
508 | blk_queue_hardsect_size(queue, dev->blk_size); | |
509 | ||
510 | blk_queue_issue_flush_fn(queue, ps3disk_issue_flush); | |
511 | blk_queue_ordered(queue, QUEUE_ORDERED_DRAIN_FLUSH, | |
512 | ps3disk_prepare_flush); | |
513 | ||
514 | blk_queue_max_phys_segments(queue, -1); | |
515 | blk_queue_max_hw_segments(queue, -1); | |
516 | blk_queue_max_segment_size(queue, dev->bounce_size); | |
517 | ||
518 | gendisk = alloc_disk(PS3DISK_MINORS); | |
519 | if (!gendisk) { | |
520 | dev_err(&dev->sbd.core, "%s:%u: alloc_disk failed\n", __func__, | |
521 | __LINE__); | |
522 | error = -ENOMEM; | |
523 | goto fail_cleanup_queue; | |
524 | } | |
525 | ||
526 | priv->gendisk = gendisk; | |
527 | gendisk->major = ps3disk_major; | |
528 | gendisk->first_minor = devidx * PS3DISK_MINORS; | |
529 | gendisk->fops = &ps3disk_fops; | |
530 | gendisk->queue = queue; | |
531 | gendisk->private_data = dev; | |
532 | gendisk->driverfs_dev = &dev->sbd.core; | |
533 | snprintf(gendisk->disk_name, sizeof(gendisk->disk_name), PS3DISK_NAME, | |
534 | devidx+'a'); | |
535 | priv->blocking_factor = dev->blk_size >> 9; | |
536 | set_capacity(gendisk, | |
537 | dev->regions[dev->region_idx].size*priv->blocking_factor); | |
538 | ||
539 | dev_info(&dev->sbd.core, | |
540 | "%s is a %s (%lu MiB total, %lu MiB for OtherOS)\n", | |
541 | gendisk->disk_name, priv->model, priv->raw_capacity >> 11, | |
542 | get_capacity(gendisk) >> 11); | |
543 | ||
544 | add_disk(gendisk); | |
545 | return 0; | |
546 | ||
547 | fail_cleanup_queue: | |
548 | blk_cleanup_queue(queue); | |
549 | fail_teardown: | |
550 | ps3stor_teardown(dev); | |
551 | fail_free_bounce: | |
552 | kfree(dev->bounce_buf); | |
553 | fail_free_priv: | |
554 | kfree(priv); | |
555 | dev->sbd.core.driver_data = NULL; | |
556 | fail: | |
557 | mutex_lock(&ps3disk_mask_mutex); | |
558 | __clear_bit(devidx, &ps3disk_mask); | |
559 | mutex_unlock(&ps3disk_mask_mutex); | |
560 | return error; | |
561 | } | |
562 | ||
563 | static int ps3disk_remove(struct ps3_system_bus_device *_dev) | |
564 | { | |
565 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); | |
566 | struct ps3disk_private *priv = dev->sbd.core.driver_data; | |
567 | ||
568 | mutex_lock(&ps3disk_mask_mutex); | |
569 | __clear_bit(priv->gendisk->first_minor / PS3DISK_MINORS, | |
570 | &ps3disk_mask); | |
571 | mutex_unlock(&ps3disk_mask_mutex); | |
572 | del_gendisk(priv->gendisk); | |
573 | blk_cleanup_queue(priv->queue); | |
574 | put_disk(priv->gendisk); | |
575 | dev_notice(&dev->sbd.core, "Synchronizing disk cache\n"); | |
576 | ps3disk_sync_cache(dev); | |
577 | ps3stor_teardown(dev); | |
578 | kfree(dev->bounce_buf); | |
579 | kfree(priv); | |
580 | dev->sbd.core.driver_data = NULL; | |
581 | return 0; | |
582 | } | |
583 | ||
584 | static struct ps3_system_bus_driver ps3disk = { | |
585 | .match_id = PS3_MATCH_ID_STOR_DISK, | |
586 | .core.name = DEVICE_NAME, | |
587 | .core.owner = THIS_MODULE, | |
588 | .probe = ps3disk_probe, | |
589 | .remove = ps3disk_remove, | |
590 | .shutdown = ps3disk_remove, | |
591 | }; | |
592 | ||
593 | ||
594 | static int __init ps3disk_init(void) | |
595 | { | |
596 | int error; | |
597 | ||
598 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) | |
599 | return -ENODEV; | |
600 | ||
601 | error = register_blkdev(0, DEVICE_NAME); | |
602 | if (error <= 0) { | |
603 | printk(KERN_ERR "%s:%u: register_blkdev failed %d\n", __func__, | |
604 | __LINE__, error); | |
605 | return error; | |
606 | } | |
607 | ps3disk_major = error; | |
608 | ||
609 | pr_info("%s:%u: registered block device major %d\n", __func__, | |
610 | __LINE__, ps3disk_major); | |
611 | ||
612 | error = ps3_system_bus_driver_register(&ps3disk); | |
613 | if (error) | |
614 | unregister_blkdev(ps3disk_major, DEVICE_NAME); | |
615 | ||
616 | return error; | |
617 | } | |
618 | ||
619 | static void __exit ps3disk_exit(void) | |
620 | { | |
621 | ps3_system_bus_driver_unregister(&ps3disk); | |
622 | unregister_blkdev(ps3disk_major, DEVICE_NAME); | |
623 | } | |
624 | ||
625 | module_init(ps3disk_init); | |
626 | module_exit(ps3disk_exit); | |
627 | ||
628 | MODULE_LICENSE("GPL"); | |
629 | MODULE_DESCRIPTION("PS3 Disk Storage Driver"); | |
630 | MODULE_AUTHOR("Sony Corporation"); | |
631 | MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_DISK); |