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> | |
5a0e3ad6 | 23 | #include <linux/slab.h> |
0c8d44f2 | 24 | #include <linux/module.h> |
c6131fa5 GU |
25 | |
26 | #include <asm/lv1call.h> | |
27 | #include <asm/ps3stor.h> | |
28 | #include <asm/firmware.h> | |
29 | ||
30 | ||
31 | #define DEVICE_NAME "ps3disk" | |
32 | ||
33 | #define BOUNCE_SIZE (64*1024) | |
34 | ||
35 | #define PS3DISK_MAX_DISKS 16 | |
36 | #define PS3DISK_MINORS 16 | |
37 | ||
38 | ||
39 | #define PS3DISK_NAME "ps3d%c" | |
40 | ||
41 | ||
42 | struct ps3disk_private { | |
43 | spinlock_t lock; /* Request queue spinlock */ | |
44 | struct request_queue *queue; | |
45 | struct gendisk *gendisk; | |
46 | unsigned int blocking_factor; | |
47 | struct request *req; | |
48 | u64 raw_capacity; | |
49 | unsigned char model[ATA_ID_PROD_LEN+1]; | |
50 | }; | |
51 | ||
52 | ||
53 | #define LV1_STORAGE_SEND_ATA_COMMAND (2) | |
54 | #define LV1_STORAGE_ATA_HDDOUT (0x23) | |
55 | ||
56 | struct lv1_ata_cmnd_block { | |
57 | u16 features; | |
58 | u16 sector_count; | |
59 | u16 LBA_low; | |
60 | u16 LBA_mid; | |
61 | u16 LBA_high; | |
62 | u8 device; | |
63 | u8 command; | |
64 | u32 is_ext; | |
65 | u32 proto; | |
66 | u32 in_out; | |
67 | u32 size; | |
68 | u64 buffer; | |
69 | u32 arglen; | |
70 | }; | |
71 | ||
72 | enum lv1_ata_proto { | |
73 | NON_DATA_PROTO = 0, | |
74 | PIO_DATA_IN_PROTO = 1, | |
75 | PIO_DATA_OUT_PROTO = 2, | |
76 | DMA_PROTO = 3 | |
77 | }; | |
78 | ||
79 | enum lv1_ata_in_out { | |
80 | DIR_WRITE = 0, /* memory -> device */ | |
81 | DIR_READ = 1 /* device -> memory */ | |
82 | }; | |
83 | ||
84 | static int ps3disk_major; | |
85 | ||
86 | ||
83d5cde4 | 87 | static const struct block_device_operations ps3disk_fops = { |
c6131fa5 GU |
88 | .owner = THIS_MODULE, |
89 | }; | |
90 | ||
91 | ||
92 | static void ps3disk_scatter_gather(struct ps3_storage_device *dev, | |
93 | struct request *req, int gather) | |
94 | { | |
95 | unsigned int offset = 0; | |
5705f702 | 96 | struct req_iterator iter; |
c6131fa5 | 97 | struct bio_vec *bvec; |
5705f702 | 98 | unsigned int i = 0; |
c6131fa5 GU |
99 | size_t size; |
100 | void *buf; | |
101 | ||
5705f702 N |
102 | rq_for_each_segment(bvec, req, iter) { |
103 | unsigned long flags; | |
c6131fa5 GU |
104 | dev_dbg(&dev->sbd.core, |
105 | "%s:%u: bio %u: %u segs %u sectors from %lu\n", | |
5705f702 | 106 | __func__, __LINE__, i, bio_segments(iter.bio), |
31e103c5 | 107 | bio_sectors(iter.bio), iter.bio->bi_sector); |
5705f702 | 108 | |
6c92e699 JA |
109 | size = bvec->bv_len; |
110 | buf = bvec_kmap_irq(bvec, &flags); | |
111 | if (gather) | |
112 | memcpy(dev->bounce_buf+offset, buf, size); | |
113 | else | |
114 | memcpy(buf, dev->bounce_buf+offset, size); | |
115 | offset += size; | |
116 | flush_kernel_dcache_page(bvec->bv_page); | |
93055c31 | 117 | bvec_kunmap_irq(buf, &flags); |
c6131fa5 GU |
118 | i++; |
119 | } | |
120 | } | |
121 | ||
122 | static int ps3disk_submit_request_sg(struct ps3_storage_device *dev, | |
123 | struct request *req) | |
124 | { | |
03fa68c2 | 125 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
c6131fa5 GU |
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, | |
83096ebf TH |
139 | "%s:%u: %s req has %u bvecs for %u sectors\n", |
140 | __func__, __LINE__, op, n, blk_rq_sectors(req)); | |
c6131fa5 GU |
141 | #endif |
142 | ||
83096ebf TH |
143 | start_sector = blk_rq_pos(req) * priv->blocking_factor; |
144 | sectors = blk_rq_sectors(req) * priv->blocking_factor; | |
e377c6e2 | 145 | dev_dbg(&dev->sbd.core, "%s:%u: %s %llu sectors starting at %llu\n", |
c6131fa5 GU |
146 | __func__, __LINE__, op, sectors, start_sector); |
147 | ||
148 | if (write) { | |
149 | ps3disk_scatter_gather(dev, req, 1); | |
150 | ||
151 | res = lv1_storage_write(dev->sbd.dev_id, region_id, | |
152 | start_sector, sectors, 0, | |
153 | dev->bounce_lpar, &dev->tag); | |
154 | } else { | |
155 | res = lv1_storage_read(dev->sbd.dev_id, region_id, | |
156 | start_sector, sectors, 0, | |
157 | dev->bounce_lpar, &dev->tag); | |
158 | } | |
159 | if (res) { | |
160 | dev_err(&dev->sbd.core, "%s:%u: %s failed %d\n", __func__, | |
161 | __LINE__, op, res); | |
10e1e629 | 162 | __blk_end_request_all(req, -EIO); |
c6131fa5 GU |
163 | return 0; |
164 | } | |
165 | ||
166 | priv->req = req; | |
167 | return 1; | |
168 | } | |
169 | ||
170 | static int ps3disk_submit_flush_request(struct ps3_storage_device *dev, | |
171 | struct request *req) | |
172 | { | |
03fa68c2 | 173 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&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))) { |
98d8c8f4 | 200 | if (req->cmd_flags & REQ_FLUSH) { |
c6131fa5 GU |
201 | if (ps3disk_submit_flush_request(dev, req)) |
202 | break; | |
98d8c8f4 FT |
203 | } else if (req->cmd_type == REQ_TYPE_FS) { |
204 | if (ps3disk_submit_request_sg(dev, req)) | |
205 | break; | |
c6131fa5 GU |
206 | } else { |
207 | blk_dump_rq_flags(req, DEVICE_NAME " bad request"); | |
10e1e629 | 208 | __blk_end_request_all(req, -EIO); |
c6131fa5 GU |
209 | continue; |
210 | } | |
211 | } | |
212 | } | |
213 | ||
165125e1 | 214 | static void ps3disk_request(struct request_queue *q) |
c6131fa5 GU |
215 | { |
216 | struct ps3_storage_device *dev = q->queuedata; | |
03fa68c2 | 217 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
c6131fa5 GU |
218 | |
219 | if (priv->req) { | |
220 | dev_dbg(&dev->sbd.core, "%s:%u busy\n", __func__, __LINE__); | |
221 | return; | |
222 | } | |
223 | ||
224 | ps3disk_do_request(dev, q); | |
225 | } | |
226 | ||
227 | static irqreturn_t ps3disk_interrupt(int irq, void *data) | |
228 | { | |
229 | struct ps3_storage_device *dev = data; | |
230 | struct ps3disk_private *priv; | |
231 | struct request *req; | |
f01ab252 | 232 | int res, read, error; |
c6131fa5 | 233 | u64 tag, status; |
c6131fa5 GU |
234 | const char *op; |
235 | ||
236 | res = lv1_storage_get_async_status(dev->sbd.dev_id, &tag, &status); | |
237 | ||
238 | if (tag != dev->tag) | |
239 | dev_err(&dev->sbd.core, | |
e377c6e2 | 240 | "%s:%u: tag mismatch, got %llx, expected %llx\n", |
c6131fa5 GU |
241 | __func__, __LINE__, tag, dev->tag); |
242 | ||
243 | if (res) { | |
e377c6e2 | 244 | dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%llx\n", |
c6131fa5 GU |
245 | __func__, __LINE__, res, status); |
246 | return IRQ_HANDLED; | |
247 | } | |
248 | ||
03fa68c2 | 249 | priv = ps3_system_bus_get_drvdata(&dev->sbd); |
c6131fa5 GU |
250 | req = priv->req; |
251 | if (!req) { | |
252 | dev_dbg(&dev->sbd.core, | |
253 | "%s:%u non-block layer request completed\n", __func__, | |
254 | __LINE__); | |
255 | dev->lv1_status = status; | |
256 | complete(&dev->done); | |
257 | return IRQ_HANDLED; | |
258 | } | |
259 | ||
98d8c8f4 | 260 | if (req->cmd_flags & REQ_FLUSH) { |
c6131fa5 | 261 | read = 0; |
c6131fa5 GU |
262 | op = "flush"; |
263 | } else { | |
264 | read = !rq_data_dir(req); | |
c6131fa5 GU |
265 | op = read ? "read" : "write"; |
266 | } | |
267 | if (status) { | |
e377c6e2 | 268 | dev_dbg(&dev->sbd.core, "%s:%u: %s failed 0x%llx\n", __func__, |
c6131fa5 | 269 | __LINE__, op, status); |
f01ab252 | 270 | error = -EIO; |
c6131fa5 GU |
271 | } else { |
272 | dev_dbg(&dev->sbd.core, "%s:%u: %s completed\n", __func__, | |
273 | __LINE__, op); | |
f01ab252 | 274 | error = 0; |
c6131fa5 GU |
275 | if (read) |
276 | ps3disk_scatter_gather(dev, req, 0); | |
277 | } | |
278 | ||
279 | spin_lock(&priv->lock); | |
cd4c34eb | 280 | __blk_end_request_all(req, error); |
c6131fa5 GU |
281 | priv->req = NULL; |
282 | ps3disk_do_request(dev, priv->queue); | |
283 | spin_unlock(&priv->lock); | |
284 | ||
285 | return IRQ_HANDLED; | |
286 | } | |
287 | ||
288 | static int ps3disk_sync_cache(struct ps3_storage_device *dev) | |
289 | { | |
290 | u64 res; | |
291 | ||
292 | dev_dbg(&dev->sbd.core, "%s:%u: sync cache\n", __func__, __LINE__); | |
293 | ||
294 | res = ps3stor_send_command(dev, LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, 0); | |
295 | if (res) { | |
e377c6e2 | 296 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%llx\n", |
c6131fa5 GU |
297 | __func__, __LINE__, res); |
298 | return -EIO; | |
299 | } | |
300 | return 0; | |
301 | } | |
302 | ||
303 | ||
304 | /* ATA helpers copied from drivers/ata/libata-core.c */ | |
305 | ||
306 | static void swap_buf_le16(u16 *buf, unsigned int buf_words) | |
307 | { | |
308 | #ifdef __BIG_ENDIAN | |
309 | unsigned int i; | |
310 | ||
311 | for (i = 0; i < buf_words; i++) | |
312 | buf[i] = le16_to_cpu(buf[i]); | |
313 | #endif /* __BIG_ENDIAN */ | |
314 | } | |
315 | ||
316 | static u64 ata_id_n_sectors(const u16 *id) | |
317 | { | |
318 | if (ata_id_has_lba(id)) { | |
319 | if (ata_id_has_lba48(id)) | |
320 | return ata_id_u64(id, 100); | |
321 | else | |
322 | return ata_id_u32(id, 60); | |
323 | } else { | |
324 | if (ata_id_current_chs_valid(id)) | |
325 | return ata_id_u32(id, 57); | |
326 | else | |
327 | return id[1] * id[3] * id[6]; | |
328 | } | |
329 | } | |
330 | ||
331 | static void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, | |
332 | unsigned int len) | |
333 | { | |
334 | unsigned int c; | |
335 | ||
336 | while (len > 0) { | |
337 | c = id[ofs] >> 8; | |
338 | *s = c; | |
339 | s++; | |
340 | ||
341 | c = id[ofs] & 0xff; | |
342 | *s = c; | |
343 | s++; | |
344 | ||
345 | ofs++; | |
346 | len -= 2; | |
347 | } | |
348 | } | |
349 | ||
350 | static void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, | |
351 | unsigned int len) | |
352 | { | |
353 | unsigned char *p; | |
354 | ||
355 | WARN_ON(!(len & 1)); | |
356 | ||
357 | ata_id_string(id, s, ofs, len - 1); | |
358 | ||
359 | p = s + strnlen(s, len - 1); | |
360 | while (p > s && p[-1] == ' ') | |
361 | p--; | |
362 | *p = '\0'; | |
363 | } | |
364 | ||
365 | static int ps3disk_identify(struct ps3_storage_device *dev) | |
366 | { | |
03fa68c2 | 367 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
c6131fa5 GU |
368 | struct lv1_ata_cmnd_block ata_cmnd; |
369 | u16 *id = dev->bounce_buf; | |
370 | u64 res; | |
371 | ||
372 | dev_dbg(&dev->sbd.core, "%s:%u: identify disk\n", __func__, __LINE__); | |
373 | ||
374 | memset(&ata_cmnd, 0, sizeof(struct lv1_ata_cmnd_block)); | |
375 | ata_cmnd.command = ATA_CMD_ID_ATA; | |
376 | ata_cmnd.sector_count = 1; | |
377 | ata_cmnd.size = ata_cmnd.arglen = ATA_ID_WORDS * 2; | |
378 | ata_cmnd.buffer = dev->bounce_lpar; | |
379 | ata_cmnd.proto = PIO_DATA_IN_PROTO; | |
380 | ata_cmnd.in_out = DIR_READ; | |
381 | ||
382 | res = ps3stor_send_command(dev, LV1_STORAGE_SEND_ATA_COMMAND, | |
383 | ps3_mm_phys_to_lpar(__pa(&ata_cmnd)), | |
384 | sizeof(ata_cmnd), ata_cmnd.buffer, | |
385 | ata_cmnd.arglen); | |
386 | if (res) { | |
e377c6e2 | 387 | dev_err(&dev->sbd.core, "%s:%u: identify disk failed 0x%llx\n", |
c6131fa5 GU |
388 | __func__, __LINE__, res); |
389 | return -EIO; | |
390 | } | |
391 | ||
392 | swap_buf_le16(id, ATA_ID_WORDS); | |
393 | ||
394 | /* All we're interested in are raw capacity and model name */ | |
395 | priv->raw_capacity = ata_id_n_sectors(id); | |
396 | ata_id_c_string(id, priv->model, ATA_ID_PROD, sizeof(priv->model)); | |
397 | return 0; | |
398 | } | |
399 | ||
c6131fa5 GU |
400 | static unsigned long ps3disk_mask; |
401 | ||
402 | static DEFINE_MUTEX(ps3disk_mask_mutex); | |
403 | ||
404 | static int __devinit ps3disk_probe(struct ps3_system_bus_device *_dev) | |
405 | { | |
406 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); | |
407 | struct ps3disk_private *priv; | |
408 | int error; | |
409 | unsigned int devidx; | |
410 | struct request_queue *queue; | |
411 | struct gendisk *gendisk; | |
412 | ||
413 | if (dev->blk_size < 512) { | |
414 | dev_err(&dev->sbd.core, | |
e377c6e2 | 415 | "%s:%u: cannot handle block size %llu\n", __func__, |
c6131fa5 GU |
416 | __LINE__, dev->blk_size); |
417 | return -EINVAL; | |
418 | } | |
419 | ||
420 | BUILD_BUG_ON(PS3DISK_MAX_DISKS > BITS_PER_LONG); | |
421 | mutex_lock(&ps3disk_mask_mutex); | |
422 | devidx = find_first_zero_bit(&ps3disk_mask, PS3DISK_MAX_DISKS); | |
423 | if (devidx >= PS3DISK_MAX_DISKS) { | |
424 | dev_err(&dev->sbd.core, "%s:%u: Too many disks\n", __func__, | |
425 | __LINE__); | |
426 | mutex_unlock(&ps3disk_mask_mutex); | |
427 | return -ENOSPC; | |
428 | } | |
429 | __set_bit(devidx, &ps3disk_mask); | |
430 | mutex_unlock(&ps3disk_mask_mutex); | |
431 | ||
432 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
433 | if (!priv) { | |
434 | error = -ENOMEM; | |
435 | goto fail; | |
436 | } | |
437 | ||
03fa68c2 | 438 | ps3_system_bus_set_drvdata(_dev, priv); |
c6131fa5 GU |
439 | spin_lock_init(&priv->lock); |
440 | ||
441 | dev->bounce_size = BOUNCE_SIZE; | |
442 | dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA); | |
443 | if (!dev->bounce_buf) { | |
444 | error = -ENOMEM; | |
445 | goto fail_free_priv; | |
446 | } | |
447 | ||
448 | error = ps3stor_setup(dev, ps3disk_interrupt); | |
449 | if (error) | |
450 | goto fail_free_bounce; | |
451 | ||
452 | ps3disk_identify(dev); | |
453 | ||
454 | queue = blk_init_queue(ps3disk_request, &priv->lock); | |
455 | if (!queue) { | |
456 | dev_err(&dev->sbd.core, "%s:%u: blk_init_queue failed\n", | |
457 | __func__, __LINE__); | |
458 | error = -ENOMEM; | |
459 | goto fail_teardown; | |
460 | } | |
461 | ||
462 | priv->queue = queue; | |
463 | queue->queuedata = dev; | |
464 | ||
465 | blk_queue_bounce_limit(queue, BLK_BOUNCE_HIGH); | |
466 | ||
086fa5ff | 467 | blk_queue_max_hw_sectors(queue, dev->bounce_size >> 9); |
c6131fa5 GU |
468 | blk_queue_segment_boundary(queue, -1UL); |
469 | blk_queue_dma_alignment(queue, dev->blk_size-1); | |
e1defc4f | 470 | blk_queue_logical_block_size(queue, dev->blk_size); |
c6131fa5 | 471 | |
4913efe4 | 472 | blk_queue_flush(queue, REQ_FLUSH); |
c6131fa5 | 473 | |
8a78362c | 474 | blk_queue_max_segments(queue, -1); |
c6131fa5 GU |
475 | blk_queue_max_segment_size(queue, dev->bounce_size); |
476 | ||
477 | gendisk = alloc_disk(PS3DISK_MINORS); | |
478 | if (!gendisk) { | |
479 | dev_err(&dev->sbd.core, "%s:%u: alloc_disk failed\n", __func__, | |
480 | __LINE__); | |
481 | error = -ENOMEM; | |
482 | goto fail_cleanup_queue; | |
483 | } | |
484 | ||
485 | priv->gendisk = gendisk; | |
486 | gendisk->major = ps3disk_major; | |
487 | gendisk->first_minor = devidx * PS3DISK_MINORS; | |
488 | gendisk->fops = &ps3disk_fops; | |
489 | gendisk->queue = queue; | |
490 | gendisk->private_data = dev; | |
491 | gendisk->driverfs_dev = &dev->sbd.core; | |
492 | snprintf(gendisk->disk_name, sizeof(gendisk->disk_name), PS3DISK_NAME, | |
493 | devidx+'a'); | |
494 | priv->blocking_factor = dev->blk_size >> 9; | |
495 | set_capacity(gendisk, | |
496 | dev->regions[dev->region_idx].size*priv->blocking_factor); | |
497 | ||
498 | dev_info(&dev->sbd.core, | |
e377c6e2 | 499 | "%s is a %s (%llu MiB total, %lu MiB for OtherOS)\n", |
c6131fa5 GU |
500 | gendisk->disk_name, priv->model, priv->raw_capacity >> 11, |
501 | get_capacity(gendisk) >> 11); | |
502 | ||
503 | add_disk(gendisk); | |
504 | return 0; | |
505 | ||
506 | fail_cleanup_queue: | |
507 | blk_cleanup_queue(queue); | |
508 | fail_teardown: | |
509 | ps3stor_teardown(dev); | |
510 | fail_free_bounce: | |
511 | kfree(dev->bounce_buf); | |
512 | fail_free_priv: | |
513 | kfree(priv); | |
03fa68c2 | 514 | ps3_system_bus_set_drvdata(_dev, NULL); |
c6131fa5 GU |
515 | fail: |
516 | mutex_lock(&ps3disk_mask_mutex); | |
517 | __clear_bit(devidx, &ps3disk_mask); | |
518 | mutex_unlock(&ps3disk_mask_mutex); | |
519 | return error; | |
520 | } | |
521 | ||
522 | static int ps3disk_remove(struct ps3_system_bus_device *_dev) | |
523 | { | |
524 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); | |
03fa68c2 | 525 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
c6131fa5 GU |
526 | |
527 | mutex_lock(&ps3disk_mask_mutex); | |
f331c029 | 528 | __clear_bit(MINOR(disk_devt(priv->gendisk)) / PS3DISK_MINORS, |
c6131fa5 GU |
529 | &ps3disk_mask); |
530 | mutex_unlock(&ps3disk_mask_mutex); | |
531 | del_gendisk(priv->gendisk); | |
532 | blk_cleanup_queue(priv->queue); | |
533 | put_disk(priv->gendisk); | |
534 | dev_notice(&dev->sbd.core, "Synchronizing disk cache\n"); | |
535 | ps3disk_sync_cache(dev); | |
536 | ps3stor_teardown(dev); | |
537 | kfree(dev->bounce_buf); | |
538 | kfree(priv); | |
03fa68c2 | 539 | ps3_system_bus_set_drvdata(_dev, NULL); |
c6131fa5 GU |
540 | return 0; |
541 | } | |
542 | ||
543 | static struct ps3_system_bus_driver ps3disk = { | |
544 | .match_id = PS3_MATCH_ID_STOR_DISK, | |
545 | .core.name = DEVICE_NAME, | |
546 | .core.owner = THIS_MODULE, | |
547 | .probe = ps3disk_probe, | |
548 | .remove = ps3disk_remove, | |
549 | .shutdown = ps3disk_remove, | |
550 | }; | |
551 | ||
552 | ||
553 | static int __init ps3disk_init(void) | |
554 | { | |
555 | int error; | |
556 | ||
557 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) | |
558 | return -ENODEV; | |
559 | ||
560 | error = register_blkdev(0, DEVICE_NAME); | |
561 | if (error <= 0) { | |
562 | printk(KERN_ERR "%s:%u: register_blkdev failed %d\n", __func__, | |
563 | __LINE__, error); | |
564 | return error; | |
565 | } | |
566 | ps3disk_major = error; | |
567 | ||
568 | pr_info("%s:%u: registered block device major %d\n", __func__, | |
569 | __LINE__, ps3disk_major); | |
570 | ||
571 | error = ps3_system_bus_driver_register(&ps3disk); | |
572 | if (error) | |
573 | unregister_blkdev(ps3disk_major, DEVICE_NAME); | |
574 | ||
575 | return error; | |
576 | } | |
577 | ||
578 | static void __exit ps3disk_exit(void) | |
579 | { | |
580 | ps3_system_bus_driver_unregister(&ps3disk); | |
581 | unregister_blkdev(ps3disk_major, DEVICE_NAME); | |
582 | } | |
583 | ||
584 | module_init(ps3disk_init); | |
585 | module_exit(ps3disk_exit); | |
586 | ||
587 | MODULE_LICENSE("GPL"); | |
588 | MODULE_DESCRIPTION("PS3 Disk Storage Driver"); | |
589 | MODULE_AUTHOR("Sony Corporation"); | |
590 | MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_DISK); |