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 | { | |
6dee2c87 RK |
123 | struct ps3disk_private *priv = |
124 | ps3_system_bus_get_driver_data(&dev->sbd); | |
c6131fa5 GU |
125 | int write = rq_data_dir(req), res; |
126 | const char *op = write ? "write" : "read"; | |
127 | u64 start_sector, sectors; | |
128 | unsigned int region_id = dev->regions[dev->region_idx].id; | |
129 | ||
130 | #ifdef DEBUG | |
131 | unsigned int n = 0; | |
5705f702 N |
132 | struct bio_vec *bv; |
133 | struct req_iterator iter; | |
c6131fa5 | 134 | |
5705f702 | 135 | rq_for_each_segment(bv, req, iter) |
c6131fa5 GU |
136 | n++; |
137 | dev_dbg(&dev->sbd.core, | |
83096ebf TH |
138 | "%s:%u: %s req has %u bvecs for %u sectors\n", |
139 | __func__, __LINE__, op, n, blk_rq_sectors(req)); | |
c6131fa5 GU |
140 | #endif |
141 | ||
83096ebf TH |
142 | start_sector = blk_rq_pos(req) * priv->blocking_factor; |
143 | sectors = blk_rq_sectors(req) * priv->blocking_factor; | |
e377c6e2 | 144 | dev_dbg(&dev->sbd.core, "%s:%u: %s %llu sectors starting at %llu\n", |
c6131fa5 GU |
145 | __func__, __LINE__, op, sectors, start_sector); |
146 | ||
147 | if (write) { | |
148 | ps3disk_scatter_gather(dev, req, 1); | |
149 | ||
150 | res = lv1_storage_write(dev->sbd.dev_id, region_id, | |
151 | start_sector, sectors, 0, | |
152 | dev->bounce_lpar, &dev->tag); | |
153 | } else { | |
154 | res = lv1_storage_read(dev->sbd.dev_id, region_id, | |
155 | start_sector, sectors, 0, | |
156 | dev->bounce_lpar, &dev->tag); | |
157 | } | |
158 | if (res) { | |
159 | dev_err(&dev->sbd.core, "%s:%u: %s failed %d\n", __func__, | |
160 | __LINE__, op, res); | |
10e1e629 | 161 | __blk_end_request_all(req, -EIO); |
c6131fa5 GU |
162 | return 0; |
163 | } | |
164 | ||
165 | priv->req = req; | |
166 | return 1; | |
167 | } | |
168 | ||
169 | static int ps3disk_submit_flush_request(struct ps3_storage_device *dev, | |
170 | struct request *req) | |
171 | { | |
6dee2c87 RK |
172 | struct ps3disk_private *priv = |
173 | ps3_system_bus_get_driver_data(&dev->sbd); | |
c6131fa5 GU |
174 | u64 res; |
175 | ||
176 | dev_dbg(&dev->sbd.core, "%s:%u: flush request\n", __func__, __LINE__); | |
177 | ||
178 | res = lv1_storage_send_device_command(dev->sbd.dev_id, | |
179 | LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, | |
180 | 0, &dev->tag); | |
181 | if (res) { | |
e377c6e2 | 182 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%llx\n", |
c6131fa5 | 183 | __func__, __LINE__, res); |
10e1e629 | 184 | __blk_end_request_all(req, -EIO); |
c6131fa5 GU |
185 | return 0; |
186 | } | |
187 | ||
188 | priv->req = req; | |
189 | return 1; | |
190 | } | |
191 | ||
192 | static void ps3disk_do_request(struct ps3_storage_device *dev, | |
165125e1 | 193 | struct request_queue *q) |
c6131fa5 GU |
194 | { |
195 | struct request *req; | |
196 | ||
197 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); | |
198 | ||
9934c8c0 | 199 | while ((req = blk_fetch_request(q))) { |
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; | |
6dee2c87 RK |
218 | struct ps3disk_private *priv = |
219 | ps3_system_bus_get_driver_data(&dev->sbd); | |
c6131fa5 GU |
220 | |
221 | if (priv->req) { | |
222 | dev_dbg(&dev->sbd.core, "%s:%u busy\n", __func__, __LINE__); | |
223 | return; | |
224 | } | |
225 | ||
226 | ps3disk_do_request(dev, q); | |
227 | } | |
228 | ||
229 | static irqreturn_t ps3disk_interrupt(int irq, void *data) | |
230 | { | |
231 | struct ps3_storage_device *dev = data; | |
232 | struct ps3disk_private *priv; | |
233 | struct request *req; | |
f01ab252 | 234 | int res, read, error; |
c6131fa5 | 235 | u64 tag, status; |
c6131fa5 GU |
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, | |
e377c6e2 | 242 | "%s:%u: tag mismatch, got %llx, expected %llx\n", |
c6131fa5 GU |
243 | __func__, __LINE__, tag, dev->tag); |
244 | ||
245 | if (res) { | |
e377c6e2 | 246 | dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%llx\n", |
c6131fa5 GU |
247 | __func__, __LINE__, res, status); |
248 | return IRQ_HANDLED; | |
249 | } | |
250 | ||
6dee2c87 | 251 | priv = ps3_system_bus_get_driver_data(&dev->sbd); |
c6131fa5 GU |
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 | ||
1a8e2bdd DW |
262 | if (req->cmd_type == REQ_TYPE_LINUX_BLOCK && |
263 | req->cmd[0] == REQ_LB_OP_FLUSH) { | |
c6131fa5 | 264 | read = 0; |
c6131fa5 GU |
265 | op = "flush"; |
266 | } else { | |
267 | read = !rq_data_dir(req); | |
c6131fa5 GU |
268 | op = read ? "read" : "write"; |
269 | } | |
270 | if (status) { | |
e377c6e2 | 271 | dev_dbg(&dev->sbd.core, "%s:%u: %s failed 0x%llx\n", __func__, |
c6131fa5 | 272 | __LINE__, op, status); |
f01ab252 | 273 | error = -EIO; |
c6131fa5 GU |
274 | } else { |
275 | dev_dbg(&dev->sbd.core, "%s:%u: %s completed\n", __func__, | |
276 | __LINE__, op); | |
f01ab252 | 277 | error = 0; |
c6131fa5 GU |
278 | if (read) |
279 | ps3disk_scatter_gather(dev, req, 0); | |
280 | } | |
281 | ||
282 | spin_lock(&priv->lock); | |
cd4c34eb | 283 | __blk_end_request_all(req, error); |
c6131fa5 GU |
284 | priv->req = NULL; |
285 | ps3disk_do_request(dev, priv->queue); | |
286 | spin_unlock(&priv->lock); | |
287 | ||
288 | return IRQ_HANDLED; | |
289 | } | |
290 | ||
291 | static int ps3disk_sync_cache(struct ps3_storage_device *dev) | |
292 | { | |
293 | u64 res; | |
294 | ||
295 | dev_dbg(&dev->sbd.core, "%s:%u: sync cache\n", __func__, __LINE__); | |
296 | ||
297 | res = ps3stor_send_command(dev, LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, 0); | |
298 | if (res) { | |
e377c6e2 | 299 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%llx\n", |
c6131fa5 GU |
300 | __func__, __LINE__, res); |
301 | return -EIO; | |
302 | } | |
303 | return 0; | |
304 | } | |
305 | ||
306 | ||
307 | /* ATA helpers copied from drivers/ata/libata-core.c */ | |
308 | ||
309 | static void swap_buf_le16(u16 *buf, unsigned int buf_words) | |
310 | { | |
311 | #ifdef __BIG_ENDIAN | |
312 | unsigned int i; | |
313 | ||
314 | for (i = 0; i < buf_words; i++) | |
315 | buf[i] = le16_to_cpu(buf[i]); | |
316 | #endif /* __BIG_ENDIAN */ | |
317 | } | |
318 | ||
319 | static u64 ata_id_n_sectors(const u16 *id) | |
320 | { | |
321 | if (ata_id_has_lba(id)) { | |
322 | if (ata_id_has_lba48(id)) | |
323 | return ata_id_u64(id, 100); | |
324 | else | |
325 | return ata_id_u32(id, 60); | |
326 | } else { | |
327 | if (ata_id_current_chs_valid(id)) | |
328 | return ata_id_u32(id, 57); | |
329 | else | |
330 | return id[1] * id[3] * id[6]; | |
331 | } | |
332 | } | |
333 | ||
334 | static void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, | |
335 | unsigned int len) | |
336 | { | |
337 | unsigned int c; | |
338 | ||
339 | while (len > 0) { | |
340 | c = id[ofs] >> 8; | |
341 | *s = c; | |
342 | s++; | |
343 | ||
344 | c = id[ofs] & 0xff; | |
345 | *s = c; | |
346 | s++; | |
347 | ||
348 | ofs++; | |
349 | len -= 2; | |
350 | } | |
351 | } | |
352 | ||
353 | static void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, | |
354 | unsigned int len) | |
355 | { | |
356 | unsigned char *p; | |
357 | ||
358 | WARN_ON(!(len & 1)); | |
359 | ||
360 | ata_id_string(id, s, ofs, len - 1); | |
361 | ||
362 | p = s + strnlen(s, len - 1); | |
363 | while (p > s && p[-1] == ' ') | |
364 | p--; | |
365 | *p = '\0'; | |
366 | } | |
367 | ||
368 | static int ps3disk_identify(struct ps3_storage_device *dev) | |
369 | { | |
6dee2c87 RK |
370 | struct ps3disk_private *priv = |
371 | ps3_system_bus_get_driver_data(&dev->sbd); | |
c6131fa5 GU |
372 | struct lv1_ata_cmnd_block ata_cmnd; |
373 | u16 *id = dev->bounce_buf; | |
374 | u64 res; | |
375 | ||
376 | dev_dbg(&dev->sbd.core, "%s:%u: identify disk\n", __func__, __LINE__); | |
377 | ||
378 | memset(&ata_cmnd, 0, sizeof(struct lv1_ata_cmnd_block)); | |
379 | ata_cmnd.command = ATA_CMD_ID_ATA; | |
380 | ata_cmnd.sector_count = 1; | |
381 | ata_cmnd.size = ata_cmnd.arglen = ATA_ID_WORDS * 2; | |
382 | ata_cmnd.buffer = dev->bounce_lpar; | |
383 | ata_cmnd.proto = PIO_DATA_IN_PROTO; | |
384 | ata_cmnd.in_out = DIR_READ; | |
385 | ||
386 | res = ps3stor_send_command(dev, LV1_STORAGE_SEND_ATA_COMMAND, | |
387 | ps3_mm_phys_to_lpar(__pa(&ata_cmnd)), | |
388 | sizeof(ata_cmnd), ata_cmnd.buffer, | |
389 | ata_cmnd.arglen); | |
390 | if (res) { | |
e377c6e2 | 391 | dev_err(&dev->sbd.core, "%s:%u: identify disk failed 0x%llx\n", |
c6131fa5 GU |
392 | __func__, __LINE__, res); |
393 | return -EIO; | |
394 | } | |
395 | ||
396 | swap_buf_le16(id, ATA_ID_WORDS); | |
397 | ||
398 | /* All we're interested in are raw capacity and model name */ | |
399 | priv->raw_capacity = ata_id_n_sectors(id); | |
400 | ata_id_c_string(id, priv->model, ATA_ID_PROD, sizeof(priv->model)); | |
401 | return 0; | |
402 | } | |
403 | ||
165125e1 | 404 | static void ps3disk_prepare_flush(struct request_queue *q, struct request *req) |
c6131fa5 GU |
405 | { |
406 | struct ps3_storage_device *dev = q->queuedata; | |
407 | ||
408 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); | |
409 | ||
1a8e2bdd DW |
410 | req->cmd_type = REQ_TYPE_LINUX_BLOCK; |
411 | req->cmd[0] = REQ_LB_OP_FLUSH; | |
c6131fa5 GU |
412 | } |
413 | ||
c6131fa5 GU |
414 | static unsigned long ps3disk_mask; |
415 | ||
416 | static DEFINE_MUTEX(ps3disk_mask_mutex); | |
417 | ||
418 | static int __devinit ps3disk_probe(struct ps3_system_bus_device *_dev) | |
419 | { | |
420 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); | |
421 | struct ps3disk_private *priv; | |
422 | int error; | |
423 | unsigned int devidx; | |
424 | struct request_queue *queue; | |
425 | struct gendisk *gendisk; | |
426 | ||
427 | if (dev->blk_size < 512) { | |
428 | dev_err(&dev->sbd.core, | |
e377c6e2 | 429 | "%s:%u: cannot handle block size %llu\n", __func__, |
c6131fa5 GU |
430 | __LINE__, dev->blk_size); |
431 | return -EINVAL; | |
432 | } | |
433 | ||
434 | BUILD_BUG_ON(PS3DISK_MAX_DISKS > BITS_PER_LONG); | |
435 | mutex_lock(&ps3disk_mask_mutex); | |
436 | devidx = find_first_zero_bit(&ps3disk_mask, PS3DISK_MAX_DISKS); | |
437 | if (devidx >= PS3DISK_MAX_DISKS) { | |
438 | dev_err(&dev->sbd.core, "%s:%u: Too many disks\n", __func__, | |
439 | __LINE__); | |
440 | mutex_unlock(&ps3disk_mask_mutex); | |
441 | return -ENOSPC; | |
442 | } | |
443 | __set_bit(devidx, &ps3disk_mask); | |
444 | mutex_unlock(&ps3disk_mask_mutex); | |
445 | ||
446 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
447 | if (!priv) { | |
448 | error = -ENOMEM; | |
449 | goto fail; | |
450 | } | |
451 | ||
6dee2c87 | 452 | ps3_system_bus_set_driver_data(_dev, priv); |
c6131fa5 GU |
453 | spin_lock_init(&priv->lock); |
454 | ||
455 | dev->bounce_size = BOUNCE_SIZE; | |
456 | dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA); | |
457 | if (!dev->bounce_buf) { | |
458 | error = -ENOMEM; | |
459 | goto fail_free_priv; | |
460 | } | |
461 | ||
462 | error = ps3stor_setup(dev, ps3disk_interrupt); | |
463 | if (error) | |
464 | goto fail_free_bounce; | |
465 | ||
466 | ps3disk_identify(dev); | |
467 | ||
468 | queue = blk_init_queue(ps3disk_request, &priv->lock); | |
469 | if (!queue) { | |
470 | dev_err(&dev->sbd.core, "%s:%u: blk_init_queue failed\n", | |
471 | __func__, __LINE__); | |
472 | error = -ENOMEM; | |
473 | goto fail_teardown; | |
474 | } | |
475 | ||
476 | priv->queue = queue; | |
477 | queue->queuedata = dev; | |
478 | ||
479 | blk_queue_bounce_limit(queue, BLK_BOUNCE_HIGH); | |
480 | ||
481 | blk_queue_max_sectors(queue, dev->bounce_size >> 9); | |
482 | blk_queue_segment_boundary(queue, -1UL); | |
483 | blk_queue_dma_alignment(queue, dev->blk_size-1); | |
e1defc4f | 484 | blk_queue_logical_block_size(queue, dev->blk_size); |
c6131fa5 | 485 | |
c6131fa5 GU |
486 | blk_queue_ordered(queue, QUEUE_ORDERED_DRAIN_FLUSH, |
487 | ps3disk_prepare_flush); | |
488 | ||
489 | blk_queue_max_phys_segments(queue, -1); | |
490 | blk_queue_max_hw_segments(queue, -1); | |
491 | blk_queue_max_segment_size(queue, dev->bounce_size); | |
492 | ||
493 | gendisk = alloc_disk(PS3DISK_MINORS); | |
494 | if (!gendisk) { | |
495 | dev_err(&dev->sbd.core, "%s:%u: alloc_disk failed\n", __func__, | |
496 | __LINE__); | |
497 | error = -ENOMEM; | |
498 | goto fail_cleanup_queue; | |
499 | } | |
500 | ||
501 | priv->gendisk = gendisk; | |
502 | gendisk->major = ps3disk_major; | |
503 | gendisk->first_minor = devidx * PS3DISK_MINORS; | |
504 | gendisk->fops = &ps3disk_fops; | |
505 | gendisk->queue = queue; | |
506 | gendisk->private_data = dev; | |
507 | gendisk->driverfs_dev = &dev->sbd.core; | |
508 | snprintf(gendisk->disk_name, sizeof(gendisk->disk_name), PS3DISK_NAME, | |
509 | devidx+'a'); | |
510 | priv->blocking_factor = dev->blk_size >> 9; | |
511 | set_capacity(gendisk, | |
512 | dev->regions[dev->region_idx].size*priv->blocking_factor); | |
513 | ||
514 | dev_info(&dev->sbd.core, | |
e377c6e2 | 515 | "%s is a %s (%llu MiB total, %lu MiB for OtherOS)\n", |
c6131fa5 GU |
516 | gendisk->disk_name, priv->model, priv->raw_capacity >> 11, |
517 | get_capacity(gendisk) >> 11); | |
518 | ||
519 | add_disk(gendisk); | |
520 | return 0; | |
521 | ||
522 | fail_cleanup_queue: | |
523 | blk_cleanup_queue(queue); | |
524 | fail_teardown: | |
525 | ps3stor_teardown(dev); | |
526 | fail_free_bounce: | |
527 | kfree(dev->bounce_buf); | |
528 | fail_free_priv: | |
529 | kfree(priv); | |
6dee2c87 | 530 | ps3_system_bus_set_driver_data(_dev, NULL); |
c6131fa5 GU |
531 | fail: |
532 | mutex_lock(&ps3disk_mask_mutex); | |
533 | __clear_bit(devidx, &ps3disk_mask); | |
534 | mutex_unlock(&ps3disk_mask_mutex); | |
535 | return error; | |
536 | } | |
537 | ||
538 | static int ps3disk_remove(struct ps3_system_bus_device *_dev) | |
539 | { | |
540 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); | |
6dee2c87 RK |
541 | struct ps3disk_private *priv = |
542 | ps3_system_bus_get_driver_data(&dev->sbd); | |
c6131fa5 GU |
543 | |
544 | mutex_lock(&ps3disk_mask_mutex); | |
f331c029 | 545 | __clear_bit(MINOR(disk_devt(priv->gendisk)) / PS3DISK_MINORS, |
c6131fa5 GU |
546 | &ps3disk_mask); |
547 | mutex_unlock(&ps3disk_mask_mutex); | |
548 | del_gendisk(priv->gendisk); | |
549 | blk_cleanup_queue(priv->queue); | |
550 | put_disk(priv->gendisk); | |
551 | dev_notice(&dev->sbd.core, "Synchronizing disk cache\n"); | |
552 | ps3disk_sync_cache(dev); | |
553 | ps3stor_teardown(dev); | |
554 | kfree(dev->bounce_buf); | |
555 | kfree(priv); | |
6dee2c87 | 556 | ps3_system_bus_set_driver_data(_dev, NULL); |
c6131fa5 GU |
557 | return 0; |
558 | } | |
559 | ||
560 | static struct ps3_system_bus_driver ps3disk = { | |
561 | .match_id = PS3_MATCH_ID_STOR_DISK, | |
562 | .core.name = DEVICE_NAME, | |
563 | .core.owner = THIS_MODULE, | |
564 | .probe = ps3disk_probe, | |
565 | .remove = ps3disk_remove, | |
566 | .shutdown = ps3disk_remove, | |
567 | }; | |
568 | ||
569 | ||
570 | static int __init ps3disk_init(void) | |
571 | { | |
572 | int error; | |
573 | ||
574 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) | |
575 | return -ENODEV; | |
576 | ||
577 | error = register_blkdev(0, DEVICE_NAME); | |
578 | if (error <= 0) { | |
579 | printk(KERN_ERR "%s:%u: register_blkdev failed %d\n", __func__, | |
580 | __LINE__, error); | |
581 | return error; | |
582 | } | |
583 | ps3disk_major = error; | |
584 | ||
585 | pr_info("%s:%u: registered block device major %d\n", __func__, | |
586 | __LINE__, ps3disk_major); | |
587 | ||
588 | error = ps3_system_bus_driver_register(&ps3disk); | |
589 | if (error) | |
590 | unregister_blkdev(ps3disk_major, DEVICE_NAME); | |
591 | ||
592 | return error; | |
593 | } | |
594 | ||
595 | static void __exit ps3disk_exit(void) | |
596 | { | |
597 | ps3_system_bus_driver_unregister(&ps3disk); | |
598 | unregister_blkdev(ps3disk_major, DEVICE_NAME); | |
599 | } | |
600 | ||
601 | module_init(ps3disk_init); | |
602 | module_exit(ps3disk_exit); | |
603 | ||
604 | MODULE_LICENSE("GPL"); | |
605 | MODULE_DESCRIPTION("PS3 Disk Storage Driver"); | |
606 | MODULE_AUTHOR("Sony Corporation"); | |
607 | MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_DISK); |