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> | |
fab1adcf | 22 | #include <linux/blk-mq.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; | |
fab1adcf | 45 | struct blk_mq_tag_set tag_set; |
c6131fa5 GU |
46 | struct gendisk *gendisk; |
47 | unsigned int blocking_factor; | |
48 | struct request *req; | |
49 | u64 raw_capacity; | |
50 | unsigned char model[ATA_ID_PROD_LEN+1]; | |
51 | }; | |
52 | ||
53 | ||
54 | #define LV1_STORAGE_SEND_ATA_COMMAND (2) | |
55 | #define LV1_STORAGE_ATA_HDDOUT (0x23) | |
56 | ||
57 | struct lv1_ata_cmnd_block { | |
58 | u16 features; | |
59 | u16 sector_count; | |
60 | u16 LBA_low; | |
61 | u16 LBA_mid; | |
62 | u16 LBA_high; | |
63 | u8 device; | |
64 | u8 command; | |
65 | u32 is_ext; | |
66 | u32 proto; | |
67 | u32 in_out; | |
68 | u32 size; | |
69 | u64 buffer; | |
70 | u32 arglen; | |
71 | }; | |
72 | ||
73 | enum lv1_ata_proto { | |
74 | NON_DATA_PROTO = 0, | |
75 | PIO_DATA_IN_PROTO = 1, | |
76 | PIO_DATA_OUT_PROTO = 2, | |
77 | DMA_PROTO = 3 | |
78 | }; | |
79 | ||
80 | enum lv1_ata_in_out { | |
81 | DIR_WRITE = 0, /* memory -> device */ | |
82 | DIR_READ = 1 /* device -> memory */ | |
83 | }; | |
84 | ||
85 | static int ps3disk_major; | |
86 | ||
87 | ||
83d5cde4 | 88 | static const struct block_device_operations ps3disk_fops = { |
c6131fa5 GU |
89 | .owner = THIS_MODULE, |
90 | }; | |
91 | ||
92 | ||
93 | static void ps3disk_scatter_gather(struct ps3_storage_device *dev, | |
94 | struct request *req, int gather) | |
95 | { | |
96 | unsigned int offset = 0; | |
5705f702 | 97 | struct req_iterator iter; |
7988613b | 98 | struct bio_vec bvec; |
5705f702 | 99 | unsigned int i = 0; |
c6131fa5 GU |
100 | size_t size; |
101 | void *buf; | |
102 | ||
5705f702 N |
103 | rq_for_each_segment(bvec, req, iter) { |
104 | unsigned long flags; | |
458b76ed KO |
105 | dev_dbg(&dev->sbd.core, "%s:%u: bio %u: %u sectors from %lu\n", |
106 | __func__, __LINE__, i, bio_sectors(iter.bio), | |
107 | iter.bio->bi_iter.bi_sector); | |
5705f702 | 108 | |
7988613b KO |
109 | size = bvec.bv_len; |
110 | buf = bvec_kmap_irq(&bvec, &flags); | |
6c92e699 JA |
111 | if (gather) |
112 | memcpy(dev->bounce_buf+offset, buf, size); | |
113 | else | |
114 | memcpy(buf, dev->bounce_buf+offset, size); | |
115 | offset += size; | |
7988613b | 116 | flush_kernel_dcache_page(bvec.bv_page); |
93055c31 | 117 | bvec_kunmap_irq(buf, &flags); |
c6131fa5 GU |
118 | i++; |
119 | } | |
120 | } | |
121 | ||
fab1adcf JA |
122 | static blk_status_t ps3disk_submit_request_sg(struct ps3_storage_device *dev, |
123 | struct request *req) | |
c6131fa5 | 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; | |
7988613b | 133 | struct bio_vec bv; |
5705f702 | 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); | |
fab1adcf | 162 | return BLK_STS_IOERR; |
c6131fa5 GU |
163 | } |
164 | ||
165 | priv->req = req; | |
fab1adcf | 166 | return BLK_STS_OK; |
c6131fa5 GU |
167 | } |
168 | ||
fab1adcf JA |
169 | static blk_status_t ps3disk_submit_flush_request(struct ps3_storage_device *dev, |
170 | struct request *req) | |
c6131fa5 | 171 | { |
03fa68c2 | 172 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
c6131fa5 GU |
173 | u64 res; |
174 | ||
175 | dev_dbg(&dev->sbd.core, "%s:%u: flush request\n", __func__, __LINE__); | |
176 | ||
177 | res = lv1_storage_send_device_command(dev->sbd.dev_id, | |
178 | LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, | |
179 | 0, &dev->tag); | |
180 | if (res) { | |
e377c6e2 | 181 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%llx\n", |
c6131fa5 | 182 | __func__, __LINE__, res); |
fab1adcf | 183 | return BLK_STS_IOERR; |
c6131fa5 GU |
184 | } |
185 | ||
186 | priv->req = req; | |
fab1adcf | 187 | return BLK_STS_OK; |
c6131fa5 GU |
188 | } |
189 | ||
fab1adcf JA |
190 | static blk_status_t ps3disk_do_request(struct ps3_storage_device *dev, |
191 | struct request *req) | |
c6131fa5 | 192 | { |
c6131fa5 GU |
193 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); |
194 | ||
fab1adcf JA |
195 | switch (req_op(req)) { |
196 | case REQ_OP_FLUSH: | |
197 | return ps3disk_submit_flush_request(dev, req); | |
198 | case REQ_OP_READ: | |
199 | case REQ_OP_WRITE: | |
200 | return ps3disk_submit_request_sg(dev, req); | |
201 | default: | |
202 | blk_dump_rq_flags(req, DEVICE_NAME " bad request"); | |
203 | return BLK_STS_IOERR; | |
c6131fa5 GU |
204 | } |
205 | } | |
206 | ||
fab1adcf JA |
207 | static blk_status_t ps3disk_queue_rq(struct blk_mq_hw_ctx *hctx, |
208 | const struct blk_mq_queue_data *bd) | |
c6131fa5 | 209 | { |
fab1adcf | 210 | struct request_queue *q = hctx->queue; |
c6131fa5 | 211 | struct ps3_storage_device *dev = q->queuedata; |
03fa68c2 | 212 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
fab1adcf | 213 | blk_status_t ret; |
c6131fa5 | 214 | |
fab1adcf JA |
215 | blk_mq_start_request(bd->rq); |
216 | ||
217 | spin_lock_irq(&priv->lock); | |
218 | ret = ps3disk_do_request(dev, bd->rq); | |
219 | spin_unlock_irq(&priv->lock); | |
c6131fa5 | 220 | |
fab1adcf | 221 | return ret; |
c6131fa5 GU |
222 | } |
223 | ||
224 | static irqreturn_t ps3disk_interrupt(int irq, void *data) | |
225 | { | |
226 | struct ps3_storage_device *dev = data; | |
227 | struct ps3disk_private *priv; | |
228 | struct request *req; | |
2a842aca CH |
229 | int res, read; |
230 | blk_status_t error; | |
c6131fa5 | 231 | u64 tag, status; |
c6131fa5 GU |
232 | const char *op; |
233 | ||
234 | res = lv1_storage_get_async_status(dev->sbd.dev_id, &tag, &status); | |
235 | ||
236 | if (tag != dev->tag) | |
237 | dev_err(&dev->sbd.core, | |
e377c6e2 | 238 | "%s:%u: tag mismatch, got %llx, expected %llx\n", |
c6131fa5 GU |
239 | __func__, __LINE__, tag, dev->tag); |
240 | ||
241 | if (res) { | |
e377c6e2 | 242 | dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%llx\n", |
c6131fa5 GU |
243 | __func__, __LINE__, res, status); |
244 | return IRQ_HANDLED; | |
245 | } | |
246 | ||
03fa68c2 | 247 | priv = ps3_system_bus_get_drvdata(&dev->sbd); |
c6131fa5 GU |
248 | req = priv->req; |
249 | if (!req) { | |
250 | dev_dbg(&dev->sbd.core, | |
251 | "%s:%u non-block layer request completed\n", __func__, | |
252 | __LINE__); | |
253 | dev->lv1_status = status; | |
254 | complete(&dev->done); | |
255 | return IRQ_HANDLED; | |
256 | } | |
257 | ||
3a5e02ce | 258 | if (req_op(req) == REQ_OP_FLUSH) { |
c6131fa5 | 259 | read = 0; |
c6131fa5 GU |
260 | op = "flush"; |
261 | } else { | |
262 | read = !rq_data_dir(req); | |
c6131fa5 GU |
263 | op = read ? "read" : "write"; |
264 | } | |
265 | if (status) { | |
e377c6e2 | 266 | dev_dbg(&dev->sbd.core, "%s:%u: %s failed 0x%llx\n", __func__, |
c6131fa5 | 267 | __LINE__, op, status); |
2a842aca | 268 | error = BLK_STS_IOERR; |
c6131fa5 GU |
269 | } else { |
270 | dev_dbg(&dev->sbd.core, "%s:%u: %s completed\n", __func__, | |
271 | __LINE__, op); | |
f01ab252 | 272 | error = 0; |
c6131fa5 GU |
273 | if (read) |
274 | ps3disk_scatter_gather(dev, req, 0); | |
275 | } | |
276 | ||
277 | spin_lock(&priv->lock); | |
c6131fa5 | 278 | priv->req = NULL; |
fab1adcf | 279 | blk_mq_end_request(req, error); |
c6131fa5 GU |
280 | spin_unlock(&priv->lock); |
281 | ||
fab1adcf | 282 | blk_mq_run_hw_queues(priv->queue, true); |
c6131fa5 GU |
283 | return IRQ_HANDLED; |
284 | } | |
285 | ||
286 | static int ps3disk_sync_cache(struct ps3_storage_device *dev) | |
287 | { | |
288 | u64 res; | |
289 | ||
290 | dev_dbg(&dev->sbd.core, "%s:%u: sync cache\n", __func__, __LINE__); | |
291 | ||
292 | res = ps3stor_send_command(dev, LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, 0); | |
293 | if (res) { | |
e377c6e2 | 294 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%llx\n", |
c6131fa5 GU |
295 | __func__, __LINE__, res); |
296 | return -EIO; | |
297 | } | |
298 | return 0; | |
299 | } | |
300 | ||
301 | ||
302 | /* ATA helpers copied from drivers/ata/libata-core.c */ | |
303 | ||
304 | static void swap_buf_le16(u16 *buf, unsigned int buf_words) | |
305 | { | |
306 | #ifdef __BIG_ENDIAN | |
307 | unsigned int i; | |
308 | ||
309 | for (i = 0; i < buf_words; i++) | |
310 | buf[i] = le16_to_cpu(buf[i]); | |
311 | #endif /* __BIG_ENDIAN */ | |
312 | } | |
313 | ||
314 | static u64 ata_id_n_sectors(const u16 *id) | |
315 | { | |
316 | if (ata_id_has_lba(id)) { | |
317 | if (ata_id_has_lba48(id)) | |
318 | return ata_id_u64(id, 100); | |
319 | else | |
320 | return ata_id_u32(id, 60); | |
321 | } else { | |
322 | if (ata_id_current_chs_valid(id)) | |
323 | return ata_id_u32(id, 57); | |
324 | else | |
325 | return id[1] * id[3] * id[6]; | |
326 | } | |
327 | } | |
328 | ||
329 | static void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, | |
330 | unsigned int len) | |
331 | { | |
332 | unsigned int c; | |
333 | ||
334 | while (len > 0) { | |
335 | c = id[ofs] >> 8; | |
336 | *s = c; | |
337 | s++; | |
338 | ||
339 | c = id[ofs] & 0xff; | |
340 | *s = c; | |
341 | s++; | |
342 | ||
343 | ofs++; | |
344 | len -= 2; | |
345 | } | |
346 | } | |
347 | ||
348 | static void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, | |
349 | unsigned int len) | |
350 | { | |
351 | unsigned char *p; | |
352 | ||
353 | WARN_ON(!(len & 1)); | |
354 | ||
355 | ata_id_string(id, s, ofs, len - 1); | |
356 | ||
357 | p = s + strnlen(s, len - 1); | |
358 | while (p > s && p[-1] == ' ') | |
359 | p--; | |
360 | *p = '\0'; | |
361 | } | |
362 | ||
363 | static int ps3disk_identify(struct ps3_storage_device *dev) | |
364 | { | |
03fa68c2 | 365 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
c6131fa5 GU |
366 | struct lv1_ata_cmnd_block ata_cmnd; |
367 | u16 *id = dev->bounce_buf; | |
368 | u64 res; | |
369 | ||
370 | dev_dbg(&dev->sbd.core, "%s:%u: identify disk\n", __func__, __LINE__); | |
371 | ||
372 | memset(&ata_cmnd, 0, sizeof(struct lv1_ata_cmnd_block)); | |
373 | ata_cmnd.command = ATA_CMD_ID_ATA; | |
374 | ata_cmnd.sector_count = 1; | |
375 | ata_cmnd.size = ata_cmnd.arglen = ATA_ID_WORDS * 2; | |
376 | ata_cmnd.buffer = dev->bounce_lpar; | |
377 | ata_cmnd.proto = PIO_DATA_IN_PROTO; | |
378 | ata_cmnd.in_out = DIR_READ; | |
379 | ||
380 | res = ps3stor_send_command(dev, LV1_STORAGE_SEND_ATA_COMMAND, | |
381 | ps3_mm_phys_to_lpar(__pa(&ata_cmnd)), | |
382 | sizeof(ata_cmnd), ata_cmnd.buffer, | |
383 | ata_cmnd.arglen); | |
384 | if (res) { | |
e377c6e2 | 385 | dev_err(&dev->sbd.core, "%s:%u: identify disk failed 0x%llx\n", |
c6131fa5 GU |
386 | __func__, __LINE__, res); |
387 | return -EIO; | |
388 | } | |
389 | ||
390 | swap_buf_le16(id, ATA_ID_WORDS); | |
391 | ||
392 | /* All we're interested in are raw capacity and model name */ | |
393 | priv->raw_capacity = ata_id_n_sectors(id); | |
394 | ata_id_c_string(id, priv->model, ATA_ID_PROD, sizeof(priv->model)); | |
395 | return 0; | |
396 | } | |
397 | ||
c6131fa5 GU |
398 | static unsigned long ps3disk_mask; |
399 | ||
400 | static DEFINE_MUTEX(ps3disk_mask_mutex); | |
401 | ||
fab1adcf JA |
402 | static const struct blk_mq_ops ps3disk_mq_ops = { |
403 | .queue_rq = ps3disk_queue_rq, | |
404 | }; | |
405 | ||
8d85fce7 | 406 | static int ps3disk_probe(struct ps3_system_bus_device *_dev) |
c6131fa5 GU |
407 | { |
408 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); | |
409 | struct ps3disk_private *priv; | |
410 | int error; | |
411 | unsigned int devidx; | |
412 | struct request_queue *queue; | |
413 | struct gendisk *gendisk; | |
414 | ||
415 | if (dev->blk_size < 512) { | |
416 | dev_err(&dev->sbd.core, | |
e377c6e2 | 417 | "%s:%u: cannot handle block size %llu\n", __func__, |
c6131fa5 GU |
418 | __LINE__, dev->blk_size); |
419 | return -EINVAL; | |
420 | } | |
421 | ||
422 | BUILD_BUG_ON(PS3DISK_MAX_DISKS > BITS_PER_LONG); | |
423 | mutex_lock(&ps3disk_mask_mutex); | |
424 | devidx = find_first_zero_bit(&ps3disk_mask, PS3DISK_MAX_DISKS); | |
425 | if (devidx >= PS3DISK_MAX_DISKS) { | |
426 | dev_err(&dev->sbd.core, "%s:%u: Too many disks\n", __func__, | |
427 | __LINE__); | |
428 | mutex_unlock(&ps3disk_mask_mutex); | |
429 | return -ENOSPC; | |
430 | } | |
431 | __set_bit(devidx, &ps3disk_mask); | |
432 | mutex_unlock(&ps3disk_mask_mutex); | |
433 | ||
434 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
435 | if (!priv) { | |
436 | error = -ENOMEM; | |
437 | goto fail; | |
438 | } | |
439 | ||
03fa68c2 | 440 | ps3_system_bus_set_drvdata(_dev, priv); |
c6131fa5 GU |
441 | spin_lock_init(&priv->lock); |
442 | ||
443 | dev->bounce_size = BOUNCE_SIZE; | |
444 | dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA); | |
445 | if (!dev->bounce_buf) { | |
446 | error = -ENOMEM; | |
447 | goto fail_free_priv; | |
448 | } | |
449 | ||
450 | error = ps3stor_setup(dev, ps3disk_interrupt); | |
451 | if (error) | |
452 | goto fail_free_bounce; | |
453 | ||
454 | ps3disk_identify(dev); | |
455 | ||
fab1adcf JA |
456 | queue = blk_mq_init_sq_queue(&priv->tag_set, &ps3disk_mq_ops, 1, |
457 | BLK_MQ_F_SHOULD_MERGE); | |
458 | if (IS_ERR(queue)) { | |
459 | dev_err(&dev->sbd.core, "%s:%u: blk_mq_init_queue failed\n", | |
c6131fa5 | 460 | __func__, __LINE__); |
fab1adcf | 461 | error = PTR_ERR(queue); |
c6131fa5 GU |
462 | goto fail_teardown; |
463 | } | |
464 | ||
465 | priv->queue = queue; | |
466 | queue->queuedata = dev; | |
467 | ||
086fa5ff | 468 | blk_queue_max_hw_sectors(queue, dev->bounce_size >> 9); |
c6131fa5 GU |
469 | blk_queue_segment_boundary(queue, -1UL); |
470 | blk_queue_dma_alignment(queue, dev->blk_size-1); | |
e1defc4f | 471 | blk_queue_logical_block_size(queue, dev->blk_size); |
c6131fa5 | 472 | |
12c95f13 | 473 | blk_queue_write_cache(queue, true, false); |
c6131fa5 | 474 | |
8a78362c | 475 | blk_queue_max_segments(queue, -1); |
c6131fa5 GU |
476 | blk_queue_max_segment_size(queue, dev->bounce_size); |
477 | ||
478 | gendisk = alloc_disk(PS3DISK_MINORS); | |
479 | if (!gendisk) { | |
480 | dev_err(&dev->sbd.core, "%s:%u: alloc_disk failed\n", __func__, | |
481 | __LINE__); | |
482 | error = -ENOMEM; | |
483 | goto fail_cleanup_queue; | |
484 | } | |
485 | ||
486 | priv->gendisk = gendisk; | |
487 | gendisk->major = ps3disk_major; | |
488 | gendisk->first_minor = devidx * PS3DISK_MINORS; | |
489 | gendisk->fops = &ps3disk_fops; | |
490 | gendisk->queue = queue; | |
491 | gendisk->private_data = dev; | |
c6131fa5 GU |
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 | ||
fef912bf | 503 | device_add_disk(&dev->sbd.core, gendisk, NULL); |
c6131fa5 GU |
504 | return 0; |
505 | ||
506 | fail_cleanup_queue: | |
507 | blk_cleanup_queue(queue); | |
fab1adcf | 508 | blk_mq_free_tag_set(&priv->tag_set); |
c6131fa5 GU |
509 | fail_teardown: |
510 | ps3stor_teardown(dev); | |
511 | fail_free_bounce: | |
512 | kfree(dev->bounce_buf); | |
513 | fail_free_priv: | |
514 | kfree(priv); | |
03fa68c2 | 515 | ps3_system_bus_set_drvdata(_dev, NULL); |
c6131fa5 GU |
516 | fail: |
517 | mutex_lock(&ps3disk_mask_mutex); | |
518 | __clear_bit(devidx, &ps3disk_mask); | |
519 | mutex_unlock(&ps3disk_mask_mutex); | |
520 | return error; | |
521 | } | |
522 | ||
523 | static int ps3disk_remove(struct ps3_system_bus_device *_dev) | |
524 | { | |
525 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); | |
03fa68c2 | 526 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
c6131fa5 GU |
527 | |
528 | mutex_lock(&ps3disk_mask_mutex); | |
f331c029 | 529 | __clear_bit(MINOR(disk_devt(priv->gendisk)) / PS3DISK_MINORS, |
c6131fa5 GU |
530 | &ps3disk_mask); |
531 | mutex_unlock(&ps3disk_mask_mutex); | |
532 | del_gendisk(priv->gendisk); | |
533 | blk_cleanup_queue(priv->queue); | |
fab1adcf | 534 | blk_mq_free_tag_set(&priv->tag_set); |
c6131fa5 GU |
535 | put_disk(priv->gendisk); |
536 | dev_notice(&dev->sbd.core, "Synchronizing disk cache\n"); | |
537 | ps3disk_sync_cache(dev); | |
538 | ps3stor_teardown(dev); | |
539 | kfree(dev->bounce_buf); | |
540 | kfree(priv); | |
03fa68c2 | 541 | ps3_system_bus_set_drvdata(_dev, NULL); |
c6131fa5 GU |
542 | return 0; |
543 | } | |
544 | ||
545 | static struct ps3_system_bus_driver ps3disk = { | |
546 | .match_id = PS3_MATCH_ID_STOR_DISK, | |
547 | .core.name = DEVICE_NAME, | |
548 | .core.owner = THIS_MODULE, | |
549 | .probe = ps3disk_probe, | |
550 | .remove = ps3disk_remove, | |
551 | .shutdown = ps3disk_remove, | |
552 | }; | |
553 | ||
554 | ||
555 | static int __init ps3disk_init(void) | |
556 | { | |
557 | int error; | |
558 | ||
559 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) | |
560 | return -ENODEV; | |
561 | ||
562 | error = register_blkdev(0, DEVICE_NAME); | |
563 | if (error <= 0) { | |
564 | printk(KERN_ERR "%s:%u: register_blkdev failed %d\n", __func__, | |
565 | __LINE__, error); | |
566 | return error; | |
567 | } | |
568 | ps3disk_major = error; | |
569 | ||
570 | pr_info("%s:%u: registered block device major %d\n", __func__, | |
571 | __LINE__, ps3disk_major); | |
572 | ||
573 | error = ps3_system_bus_driver_register(&ps3disk); | |
574 | if (error) | |
575 | unregister_blkdev(ps3disk_major, DEVICE_NAME); | |
576 | ||
577 | return error; | |
578 | } | |
579 | ||
580 | static void __exit ps3disk_exit(void) | |
581 | { | |
582 | ps3_system_bus_driver_unregister(&ps3disk); | |
583 | unregister_blkdev(ps3disk_major, DEVICE_NAME); | |
584 | } | |
585 | ||
586 | module_init(ps3disk_init); | |
587 | module_exit(ps3disk_exit); | |
588 | ||
589 | MODULE_LICENSE("GPL"); | |
590 | MODULE_DESCRIPTION("PS3 Disk Storage Driver"); | |
591 | MODULE_AUTHOR("Sony Corporation"); | |
592 | MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_DISK); |