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Commit | Line | Data |
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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 | 104 | __func__, __LINE__, i, bio_segments(iter.bio), |
31e103c5 | 105 | bio_sectors(iter.bio), iter.bio->bi_sector); |
5705f702 | 106 | |
6c92e699 JA |
107 | size = bvec->bv_len; |
108 | buf = bvec_kmap_irq(bvec, &flags); | |
109 | if (gather) | |
110 | memcpy(dev->bounce_buf+offset, buf, size); | |
111 | else | |
112 | memcpy(buf, dev->bounce_buf+offset, size); | |
113 | offset += size; | |
114 | flush_kernel_dcache_page(bvec->bv_page); | |
115 | bvec_kunmap_irq(bvec, &flags); | |
c6131fa5 GU |
116 | i++; |
117 | } | |
118 | } | |
119 | ||
120 | static int ps3disk_submit_request_sg(struct ps3_storage_device *dev, | |
121 | struct request *req) | |
122 | { | |
123 | struct ps3disk_private *priv = dev->sbd.core.driver_data; | |
124 | int write = rq_data_dir(req), res; | |
125 | const char *op = write ? "write" : "read"; | |
126 | u64 start_sector, sectors; | |
127 | unsigned int region_id = dev->regions[dev->region_idx].id; | |
128 | ||
129 | #ifdef DEBUG | |
130 | unsigned int n = 0; | |
5705f702 N |
131 | struct bio_vec *bv; |
132 | struct req_iterator iter; | |
c6131fa5 | 133 | |
5705f702 | 134 | rq_for_each_segment(bv, req, iter) |
c6131fa5 GU |
135 | n++; |
136 | dev_dbg(&dev->sbd.core, | |
83096ebf TH |
137 | "%s:%u: %s req has %u bvecs for %u sectors\n", |
138 | __func__, __LINE__, op, n, blk_rq_sectors(req)); | |
c6131fa5 GU |
139 | #endif |
140 | ||
83096ebf TH |
141 | start_sector = blk_rq_pos(req) * priv->blocking_factor; |
142 | sectors = blk_rq_sectors(req) * priv->blocking_factor; | |
e377c6e2 | 143 | dev_dbg(&dev->sbd.core, "%s:%u: %s %llu sectors starting at %llu\n", |
c6131fa5 GU |
144 | __func__, __LINE__, op, sectors, start_sector); |
145 | ||
146 | if (write) { | |
147 | ps3disk_scatter_gather(dev, req, 1); | |
148 | ||
149 | res = lv1_storage_write(dev->sbd.dev_id, region_id, | |
150 | start_sector, sectors, 0, | |
151 | dev->bounce_lpar, &dev->tag); | |
152 | } else { | |
153 | res = lv1_storage_read(dev->sbd.dev_id, region_id, | |
154 | start_sector, sectors, 0, | |
155 | dev->bounce_lpar, &dev->tag); | |
156 | } | |
157 | if (res) { | |
158 | dev_err(&dev->sbd.core, "%s:%u: %s failed %d\n", __func__, | |
159 | __LINE__, op, res); | |
10e1e629 | 160 | __blk_end_request_all(req, -EIO); |
c6131fa5 GU |
161 | return 0; |
162 | } | |
163 | ||
164 | priv->req = req; | |
165 | return 1; | |
166 | } | |
167 | ||
168 | static int ps3disk_submit_flush_request(struct ps3_storage_device *dev, | |
169 | struct request *req) | |
170 | { | |
171 | struct ps3disk_private *priv = dev->sbd.core.driver_data; | |
172 | u64 res; | |
173 | ||
174 | dev_dbg(&dev->sbd.core, "%s:%u: flush request\n", __func__, __LINE__); | |
175 | ||
176 | res = lv1_storage_send_device_command(dev->sbd.dev_id, | |
177 | LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, | |
178 | 0, &dev->tag); | |
179 | if (res) { | |
e377c6e2 | 180 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%llx\n", |
c6131fa5 | 181 | __func__, __LINE__, res); |
10e1e629 | 182 | __blk_end_request_all(req, -EIO); |
c6131fa5 GU |
183 | return 0; |
184 | } | |
185 | ||
186 | priv->req = req; | |
187 | return 1; | |
188 | } | |
189 | ||
190 | static void ps3disk_do_request(struct ps3_storage_device *dev, | |
165125e1 | 191 | struct request_queue *q) |
c6131fa5 GU |
192 | { |
193 | struct request *req; | |
194 | ||
195 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); | |
196 | ||
197 | while ((req = elv_next_request(q))) { | |
10e1e629 TH |
198 | blkdev_dequeue_request(req); |
199 | ||
c6131fa5 GU |
200 | if (blk_fs_request(req)) { |
201 | if (ps3disk_submit_request_sg(dev, req)) | |
202 | break; | |
1a8e2bdd DW |
203 | } else if (req->cmd_type == REQ_TYPE_LINUX_BLOCK && |
204 | req->cmd[0] == REQ_LB_OP_FLUSH) { | |
c6131fa5 GU |
205 | if (ps3disk_submit_flush_request(dev, req)) |
206 | break; | |
207 | } else { | |
208 | blk_dump_rq_flags(req, DEVICE_NAME " bad request"); | |
10e1e629 | 209 | __blk_end_request_all(req, -EIO); |
c6131fa5 GU |
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; | |
f01ab252 | 233 | int res, read, error; |
c6131fa5 | 234 | u64 tag, status; |
c6131fa5 GU |
235 | const char *op; |
236 | ||
237 | res = lv1_storage_get_async_status(dev->sbd.dev_id, &tag, &status); | |
238 | ||
239 | if (tag != dev->tag) | |
240 | dev_err(&dev->sbd.core, | |
e377c6e2 | 241 | "%s:%u: tag mismatch, got %llx, expected %llx\n", |
c6131fa5 GU |
242 | __func__, __LINE__, tag, dev->tag); |
243 | ||
244 | if (res) { | |
e377c6e2 | 245 | dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%llx\n", |
c6131fa5 GU |
246 | __func__, __LINE__, res, status); |
247 | return IRQ_HANDLED; | |
248 | } | |
249 | ||
250 | priv = dev->sbd.core.driver_data; | |
251 | req = priv->req; | |
252 | if (!req) { | |
253 | dev_dbg(&dev->sbd.core, | |
254 | "%s:%u non-block layer request completed\n", __func__, | |
255 | __LINE__); | |
256 | dev->lv1_status = status; | |
257 | complete(&dev->done); | |
258 | return IRQ_HANDLED; | |
259 | } | |
260 | ||
1a8e2bdd DW |
261 | if (req->cmd_type == REQ_TYPE_LINUX_BLOCK && |
262 | req->cmd[0] == REQ_LB_OP_FLUSH) { | |
c6131fa5 | 263 | read = 0; |
c6131fa5 GU |
264 | op = "flush"; |
265 | } else { | |
266 | read = !rq_data_dir(req); | |
c6131fa5 GU |
267 | op = read ? "read" : "write"; |
268 | } | |
269 | if (status) { | |
e377c6e2 | 270 | dev_dbg(&dev->sbd.core, "%s:%u: %s failed 0x%llx\n", __func__, |
c6131fa5 | 271 | __LINE__, op, status); |
f01ab252 | 272 | error = -EIO; |
c6131fa5 GU |
273 | } else { |
274 | dev_dbg(&dev->sbd.core, "%s:%u: %s completed\n", __func__, | |
275 | __LINE__, op); | |
f01ab252 | 276 | error = 0; |
c6131fa5 GU |
277 | if (read) |
278 | ps3disk_scatter_gather(dev, req, 0); | |
279 | } | |
280 | ||
281 | spin_lock(&priv->lock); | |
cd4c34eb | 282 | __blk_end_request_all(req, error); |
c6131fa5 GU |
283 | priv->req = NULL; |
284 | ps3disk_do_request(dev, priv->queue); | |
285 | spin_unlock(&priv->lock); | |
286 | ||
287 | return IRQ_HANDLED; | |
288 | } | |
289 | ||
290 | static int ps3disk_sync_cache(struct ps3_storage_device *dev) | |
291 | { | |
292 | u64 res; | |
293 | ||
294 | dev_dbg(&dev->sbd.core, "%s:%u: sync cache\n", __func__, __LINE__); | |
295 | ||
296 | res = ps3stor_send_command(dev, LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, 0); | |
297 | if (res) { | |
e377c6e2 | 298 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%llx\n", |
c6131fa5 GU |
299 | __func__, __LINE__, res); |
300 | return -EIO; | |
301 | } | |
302 | return 0; | |
303 | } | |
304 | ||
305 | ||
306 | /* ATA helpers copied from drivers/ata/libata-core.c */ | |
307 | ||
308 | static void swap_buf_le16(u16 *buf, unsigned int buf_words) | |
309 | { | |
310 | #ifdef __BIG_ENDIAN | |
311 | unsigned int i; | |
312 | ||
313 | for (i = 0; i < buf_words; i++) | |
314 | buf[i] = le16_to_cpu(buf[i]); | |
315 | #endif /* __BIG_ENDIAN */ | |
316 | } | |
317 | ||
318 | static u64 ata_id_n_sectors(const u16 *id) | |
319 | { | |
320 | if (ata_id_has_lba(id)) { | |
321 | if (ata_id_has_lba48(id)) | |
322 | return ata_id_u64(id, 100); | |
323 | else | |
324 | return ata_id_u32(id, 60); | |
325 | } else { | |
326 | if (ata_id_current_chs_valid(id)) | |
327 | return ata_id_u32(id, 57); | |
328 | else | |
329 | return id[1] * id[3] * id[6]; | |
330 | } | |
331 | } | |
332 | ||
333 | static void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, | |
334 | unsigned int len) | |
335 | { | |
336 | unsigned int c; | |
337 | ||
338 | while (len > 0) { | |
339 | c = id[ofs] >> 8; | |
340 | *s = c; | |
341 | s++; | |
342 | ||
343 | c = id[ofs] & 0xff; | |
344 | *s = c; | |
345 | s++; | |
346 | ||
347 | ofs++; | |
348 | len -= 2; | |
349 | } | |
350 | } | |
351 | ||
352 | static void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, | |
353 | unsigned int len) | |
354 | { | |
355 | unsigned char *p; | |
356 | ||
357 | WARN_ON(!(len & 1)); | |
358 | ||
359 | ata_id_string(id, s, ofs, len - 1); | |
360 | ||
361 | p = s + strnlen(s, len - 1); | |
362 | while (p > s && p[-1] == ' ') | |
363 | p--; | |
364 | *p = '\0'; | |
365 | } | |
366 | ||
367 | static int ps3disk_identify(struct ps3_storage_device *dev) | |
368 | { | |
369 | struct ps3disk_private *priv = dev->sbd.core.driver_data; | |
370 | struct lv1_ata_cmnd_block ata_cmnd; | |
371 | u16 *id = dev->bounce_buf; | |
372 | u64 res; | |
373 | ||
374 | dev_dbg(&dev->sbd.core, "%s:%u: identify disk\n", __func__, __LINE__); | |
375 | ||
376 | memset(&ata_cmnd, 0, sizeof(struct lv1_ata_cmnd_block)); | |
377 | ata_cmnd.command = ATA_CMD_ID_ATA; | |
378 | ata_cmnd.sector_count = 1; | |
379 | ata_cmnd.size = ata_cmnd.arglen = ATA_ID_WORDS * 2; | |
380 | ata_cmnd.buffer = dev->bounce_lpar; | |
381 | ata_cmnd.proto = PIO_DATA_IN_PROTO; | |
382 | ata_cmnd.in_out = DIR_READ; | |
383 | ||
384 | res = ps3stor_send_command(dev, LV1_STORAGE_SEND_ATA_COMMAND, | |
385 | ps3_mm_phys_to_lpar(__pa(&ata_cmnd)), | |
386 | sizeof(ata_cmnd), ata_cmnd.buffer, | |
387 | ata_cmnd.arglen); | |
388 | if (res) { | |
e377c6e2 | 389 | dev_err(&dev->sbd.core, "%s:%u: identify disk failed 0x%llx\n", |
c6131fa5 GU |
390 | __func__, __LINE__, res); |
391 | return -EIO; | |
392 | } | |
393 | ||
394 | swap_buf_le16(id, ATA_ID_WORDS); | |
395 | ||
396 | /* All we're interested in are raw capacity and model name */ | |
397 | priv->raw_capacity = ata_id_n_sectors(id); | |
398 | ata_id_c_string(id, priv->model, ATA_ID_PROD, sizeof(priv->model)); | |
399 | return 0; | |
400 | } | |
401 | ||
165125e1 | 402 | static void ps3disk_prepare_flush(struct request_queue *q, struct request *req) |
c6131fa5 GU |
403 | { |
404 | struct ps3_storage_device *dev = q->queuedata; | |
405 | ||
406 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); | |
407 | ||
1a8e2bdd DW |
408 | req->cmd_type = REQ_TYPE_LINUX_BLOCK; |
409 | req->cmd[0] = REQ_LB_OP_FLUSH; | |
c6131fa5 GU |
410 | } |
411 | ||
c6131fa5 GU |
412 | static unsigned long ps3disk_mask; |
413 | ||
414 | static DEFINE_MUTEX(ps3disk_mask_mutex); | |
415 | ||
416 | static int __devinit ps3disk_probe(struct ps3_system_bus_device *_dev) | |
417 | { | |
418 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); | |
419 | struct ps3disk_private *priv; | |
420 | int error; | |
421 | unsigned int devidx; | |
422 | struct request_queue *queue; | |
423 | struct gendisk *gendisk; | |
424 | ||
425 | if (dev->blk_size < 512) { | |
426 | dev_err(&dev->sbd.core, | |
e377c6e2 | 427 | "%s:%u: cannot handle block size %llu\n", __func__, |
c6131fa5 GU |
428 | __LINE__, dev->blk_size); |
429 | return -EINVAL; | |
430 | } | |
431 | ||
432 | BUILD_BUG_ON(PS3DISK_MAX_DISKS > BITS_PER_LONG); | |
433 | mutex_lock(&ps3disk_mask_mutex); | |
434 | devidx = find_first_zero_bit(&ps3disk_mask, PS3DISK_MAX_DISKS); | |
435 | if (devidx >= PS3DISK_MAX_DISKS) { | |
436 | dev_err(&dev->sbd.core, "%s:%u: Too many disks\n", __func__, | |
437 | __LINE__); | |
438 | mutex_unlock(&ps3disk_mask_mutex); | |
439 | return -ENOSPC; | |
440 | } | |
441 | __set_bit(devidx, &ps3disk_mask); | |
442 | mutex_unlock(&ps3disk_mask_mutex); | |
443 | ||
444 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
445 | if (!priv) { | |
446 | error = -ENOMEM; | |
447 | goto fail; | |
448 | } | |
449 | ||
450 | dev->sbd.core.driver_data = priv; | |
451 | spin_lock_init(&priv->lock); | |
452 | ||
453 | dev->bounce_size = BOUNCE_SIZE; | |
454 | dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA); | |
455 | if (!dev->bounce_buf) { | |
456 | error = -ENOMEM; | |
457 | goto fail_free_priv; | |
458 | } | |
459 | ||
460 | error = ps3stor_setup(dev, ps3disk_interrupt); | |
461 | if (error) | |
462 | goto fail_free_bounce; | |
463 | ||
464 | ps3disk_identify(dev); | |
465 | ||
466 | queue = blk_init_queue(ps3disk_request, &priv->lock); | |
467 | if (!queue) { | |
468 | dev_err(&dev->sbd.core, "%s:%u: blk_init_queue failed\n", | |
469 | __func__, __LINE__); | |
470 | error = -ENOMEM; | |
471 | goto fail_teardown; | |
472 | } | |
473 | ||
474 | priv->queue = queue; | |
475 | queue->queuedata = dev; | |
476 | ||
477 | blk_queue_bounce_limit(queue, BLK_BOUNCE_HIGH); | |
478 | ||
479 | blk_queue_max_sectors(queue, dev->bounce_size >> 9); | |
480 | blk_queue_segment_boundary(queue, -1UL); | |
481 | blk_queue_dma_alignment(queue, dev->blk_size-1); | |
482 | blk_queue_hardsect_size(queue, dev->blk_size); | |
483 | ||
c6131fa5 GU |
484 | blk_queue_ordered(queue, QUEUE_ORDERED_DRAIN_FLUSH, |
485 | ps3disk_prepare_flush); | |
486 | ||
487 | blk_queue_max_phys_segments(queue, -1); | |
488 | blk_queue_max_hw_segments(queue, -1); | |
489 | blk_queue_max_segment_size(queue, dev->bounce_size); | |
490 | ||
491 | gendisk = alloc_disk(PS3DISK_MINORS); | |
492 | if (!gendisk) { | |
493 | dev_err(&dev->sbd.core, "%s:%u: alloc_disk failed\n", __func__, | |
494 | __LINE__); | |
495 | error = -ENOMEM; | |
496 | goto fail_cleanup_queue; | |
497 | } | |
498 | ||
499 | priv->gendisk = gendisk; | |
500 | gendisk->major = ps3disk_major; | |
501 | gendisk->first_minor = devidx * PS3DISK_MINORS; | |
502 | gendisk->fops = &ps3disk_fops; | |
503 | gendisk->queue = queue; | |
504 | gendisk->private_data = dev; | |
505 | gendisk->driverfs_dev = &dev->sbd.core; | |
506 | snprintf(gendisk->disk_name, sizeof(gendisk->disk_name), PS3DISK_NAME, | |
507 | devidx+'a'); | |
508 | priv->blocking_factor = dev->blk_size >> 9; | |
509 | set_capacity(gendisk, | |
510 | dev->regions[dev->region_idx].size*priv->blocking_factor); | |
511 | ||
512 | dev_info(&dev->sbd.core, | |
e377c6e2 | 513 | "%s is a %s (%llu MiB total, %lu MiB for OtherOS)\n", |
c6131fa5 GU |
514 | gendisk->disk_name, priv->model, priv->raw_capacity >> 11, |
515 | get_capacity(gendisk) >> 11); | |
516 | ||
517 | add_disk(gendisk); | |
518 | return 0; | |
519 | ||
520 | fail_cleanup_queue: | |
521 | blk_cleanup_queue(queue); | |
522 | fail_teardown: | |
523 | ps3stor_teardown(dev); | |
524 | fail_free_bounce: | |
525 | kfree(dev->bounce_buf); | |
526 | fail_free_priv: | |
527 | kfree(priv); | |
528 | dev->sbd.core.driver_data = NULL; | |
529 | fail: | |
530 | mutex_lock(&ps3disk_mask_mutex); | |
531 | __clear_bit(devidx, &ps3disk_mask); | |
532 | mutex_unlock(&ps3disk_mask_mutex); | |
533 | return error; | |
534 | } | |
535 | ||
536 | static int ps3disk_remove(struct ps3_system_bus_device *_dev) | |
537 | { | |
538 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); | |
539 | struct ps3disk_private *priv = dev->sbd.core.driver_data; | |
540 | ||
541 | mutex_lock(&ps3disk_mask_mutex); | |
f331c029 | 542 | __clear_bit(MINOR(disk_devt(priv->gendisk)) / PS3DISK_MINORS, |
c6131fa5 GU |
543 | &ps3disk_mask); |
544 | mutex_unlock(&ps3disk_mask_mutex); | |
545 | del_gendisk(priv->gendisk); | |
546 | blk_cleanup_queue(priv->queue); | |
547 | put_disk(priv->gendisk); | |
548 | dev_notice(&dev->sbd.core, "Synchronizing disk cache\n"); | |
549 | ps3disk_sync_cache(dev); | |
550 | ps3stor_teardown(dev); | |
551 | kfree(dev->bounce_buf); | |
552 | kfree(priv); | |
553 | dev->sbd.core.driver_data = NULL; | |
554 | return 0; | |
555 | } | |
556 | ||
557 | static struct ps3_system_bus_driver ps3disk = { | |
558 | .match_id = PS3_MATCH_ID_STOR_DISK, | |
559 | .core.name = DEVICE_NAME, | |
560 | .core.owner = THIS_MODULE, | |
561 | .probe = ps3disk_probe, | |
562 | .remove = ps3disk_remove, | |
563 | .shutdown = ps3disk_remove, | |
564 | }; | |
565 | ||
566 | ||
567 | static int __init ps3disk_init(void) | |
568 | { | |
569 | int error; | |
570 | ||
571 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) | |
572 | return -ENODEV; | |
573 | ||
574 | error = register_blkdev(0, DEVICE_NAME); | |
575 | if (error <= 0) { | |
576 | printk(KERN_ERR "%s:%u: register_blkdev failed %d\n", __func__, | |
577 | __LINE__, error); | |
578 | return error; | |
579 | } | |
580 | ps3disk_major = error; | |
581 | ||
582 | pr_info("%s:%u: registered block device major %d\n", __func__, | |
583 | __LINE__, ps3disk_major); | |
584 | ||
585 | error = ps3_system_bus_driver_register(&ps3disk); | |
586 | if (error) | |
587 | unregister_blkdev(ps3disk_major, DEVICE_NAME); | |
588 | ||
589 | return error; | |
590 | } | |
591 | ||
592 | static void __exit ps3disk_exit(void) | |
593 | { | |
594 | ps3_system_bus_driver_unregister(&ps3disk); | |
595 | unregister_blkdev(ps3disk_major, DEVICE_NAME); | |
596 | } | |
597 | ||
598 | module_init(ps3disk_init); | |
599 | module_exit(ps3disk_exit); | |
600 | ||
601 | MODULE_LICENSE("GPL"); | |
602 | MODULE_DESCRIPTION("PS3 Disk Storage Driver"); | |
603 | MODULE_AUTHOR("Sony Corporation"); | |
604 | MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_DISK); |