Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 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; |
| 94 | struct bio *bio; |
| 95 | sector_t sector; |
| 96 | struct bio_vec *bvec; |
| 97 | unsigned int i = 0, j; |
| 98 | size_t size; |
| 99 | void *buf; |
| 100 | |
| 101 | rq_for_each_bio(bio, req) { |
| 102 | sector = bio->bi_sector; |
| 103 | dev_dbg(&dev->sbd.core, |
| 104 | "%s:%u: bio %u: %u segs %u sectors from %lu\n", |
| 105 | __func__, __LINE__, i, bio_segments(bio), |
| 106 | bio_sectors(bio), sector); |
| 107 | bio_for_each_segment(bvec, bio, j) { |
| 108 | size = bvec->bv_len; |
| 109 | buf = __bio_kmap_atomic(bio, j, KM_IRQ0); |
| 110 | if (gather) |
| 111 | memcpy(dev->bounce_buf+offset, buf, size); |
| 112 | else |
| 113 | memcpy(buf, dev->bounce_buf+offset, size); |
| 114 | offset += size; |
| 115 | flush_kernel_dcache_page(bio_iovec_idx(bio, j)->bv_page); |
| 116 | __bio_kunmap_atomic(bio, KM_IRQ0); |
| 117 | } |
| 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; |
| 133 | struct bio *bio; |
| 134 | |
| 135 | rq_for_each_bio(bio, req) |
| 136 | n++; |
| 137 | dev_dbg(&dev->sbd.core, |
| 138 | "%s:%u: %s req has %u bios for %lu sectors %lu hard sectors\n", |
| 139 | __func__, __LINE__, op, n, req->nr_sectors, |
| 140 | req->hard_nr_sectors); |
| 141 | #endif |
| 142 | |
| 143 | start_sector = req->sector * priv->blocking_factor; |
| 144 | sectors = req->nr_sectors * priv->blocking_factor; |
| 145 | dev_dbg(&dev->sbd.core, "%s:%u: %s %lu sectors starting at %lu\n", |
| 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); |
| 162 | end_request(req, 0); |
| 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 | { |
| 173 | struct ps3disk_private *priv = dev->sbd.core.driver_data; |
| 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) { |
| 182 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%lx\n", |
| 183 | __func__, __LINE__, res); |
| 184 | end_request(req, 0); |
| 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, |
| 193 | request_queue_t *q) |
| 194 | { |
| 195 | struct request *req; |
| 196 | |
| 197 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); |
| 198 | |
| 199 | while ((req = elv_next_request(q))) { |
| 200 | if (blk_fs_request(req)) { |
| 201 | if (ps3disk_submit_request_sg(dev, req)) |
| 202 | break; |
| 203 | } else if (req->cmd_type == REQ_TYPE_FLUSH) { |
| 204 | if (ps3disk_submit_flush_request(dev, req)) |
| 205 | break; |
| 206 | } else { |
| 207 | blk_dump_rq_flags(req, DEVICE_NAME " bad request"); |
| 208 | end_request(req, 0); |
| 209 | continue; |
| 210 | } |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | static void ps3disk_request(request_queue_t *q) |
| 215 | { |
| 216 | struct ps3_storage_device *dev = q->queuedata; |
| 217 | struct ps3disk_private *priv = dev->sbd.core.driver_data; |
| 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; |
| 232 | int res, read, uptodate; |
| 233 | u64 tag, status; |
| 234 | unsigned long num_sectors; |
| 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, |
| 241 | "%s:%u: tag mismatch, got %lx, expected %lx\n", |
| 242 | __func__, __LINE__, tag, dev->tag); |
| 243 | |
| 244 | if (res) { |
| 245 | dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%lx\n", |
| 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 | |
| 261 | if (req->cmd_type == REQ_TYPE_FLUSH) { |
| 262 | read = 0; |
| 263 | num_sectors = req->hard_cur_sectors; |
| 264 | op = "flush"; |
| 265 | } else { |
| 266 | read = !rq_data_dir(req); |
| 267 | num_sectors = req->nr_sectors; |
| 268 | op = read ? "read" : "write"; |
| 269 | } |
| 270 | if (status) { |
| 271 | dev_dbg(&dev->sbd.core, "%s:%u: %s failed 0x%lx\n", __func__, |
| 272 | __LINE__, op, status); |
| 273 | uptodate = 0; |
| 274 | } else { |
| 275 | dev_dbg(&dev->sbd.core, "%s:%u: %s completed\n", __func__, |
| 276 | __LINE__, op); |
| 277 | uptodate = 1; |
| 278 | if (read) |
| 279 | ps3disk_scatter_gather(dev, req, 0); |
| 280 | } |
| 281 | |
| 282 | spin_lock(&priv->lock); |
| 283 | if (!end_that_request_first(req, uptodate, num_sectors)) { |
| 284 | add_disk_randomness(req->rq_disk); |
| 285 | blkdev_dequeue_request(req); |
| 286 | end_that_request_last(req, uptodate); |
| 287 | } |
| 288 | priv->req = NULL; |
| 289 | ps3disk_do_request(dev, priv->queue); |
| 290 | spin_unlock(&priv->lock); |
| 291 | |
| 292 | return IRQ_HANDLED; |
| 293 | } |
| 294 | |
| 295 | static int ps3disk_sync_cache(struct ps3_storage_device *dev) |
| 296 | { |
| 297 | u64 res; |
| 298 | |
| 299 | dev_dbg(&dev->sbd.core, "%s:%u: sync cache\n", __func__, __LINE__); |
| 300 | |
| 301 | res = ps3stor_send_command(dev, LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, 0); |
| 302 | if (res) { |
| 303 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%lx\n", |
| 304 | __func__, __LINE__, res); |
| 305 | return -EIO; |
| 306 | } |
| 307 | return 0; |
| 308 | } |
| 309 | |
| 310 | |
| 311 | /* ATA helpers copied from drivers/ata/libata-core.c */ |
| 312 | |
| 313 | static void swap_buf_le16(u16 *buf, unsigned int buf_words) |
| 314 | { |
| 315 | #ifdef __BIG_ENDIAN |
| 316 | unsigned int i; |
| 317 | |
| 318 | for (i = 0; i < buf_words; i++) |
| 319 | buf[i] = le16_to_cpu(buf[i]); |
| 320 | #endif /* __BIG_ENDIAN */ |
| 321 | } |
| 322 | |
| 323 | static u64 ata_id_n_sectors(const u16 *id) |
| 324 | { |
| 325 | if (ata_id_has_lba(id)) { |
| 326 | if (ata_id_has_lba48(id)) |
| 327 | return ata_id_u64(id, 100); |
| 328 | else |
| 329 | return ata_id_u32(id, 60); |
| 330 | } else { |
| 331 | if (ata_id_current_chs_valid(id)) |
| 332 | return ata_id_u32(id, 57); |
| 333 | else |
| 334 | return id[1] * id[3] * id[6]; |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | static void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, |
| 339 | unsigned int len) |
| 340 | { |
| 341 | unsigned int c; |
| 342 | |
| 343 | while (len > 0) { |
| 344 | c = id[ofs] >> 8; |
| 345 | *s = c; |
| 346 | s++; |
| 347 | |
| 348 | c = id[ofs] & 0xff; |
| 349 | *s = c; |
| 350 | s++; |
| 351 | |
| 352 | ofs++; |
| 353 | len -= 2; |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | static void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, |
| 358 | unsigned int len) |
| 359 | { |
| 360 | unsigned char *p; |
| 361 | |
| 362 | WARN_ON(!(len & 1)); |
| 363 | |
| 364 | ata_id_string(id, s, ofs, len - 1); |
| 365 | |
| 366 | p = s + strnlen(s, len - 1); |
| 367 | while (p > s && p[-1] == ' ') |
| 368 | p--; |
| 369 | *p = '\0'; |
| 370 | } |
| 371 | |
| 372 | static int ps3disk_identify(struct ps3_storage_device *dev) |
| 373 | { |
| 374 | struct ps3disk_private *priv = dev->sbd.core.driver_data; |
| 375 | struct lv1_ata_cmnd_block ata_cmnd; |
| 376 | u16 *id = dev->bounce_buf; |
| 377 | u64 res; |
| 378 | |
| 379 | dev_dbg(&dev->sbd.core, "%s:%u: identify disk\n", __func__, __LINE__); |
| 380 | |
| 381 | memset(&ata_cmnd, 0, sizeof(struct lv1_ata_cmnd_block)); |
| 382 | ata_cmnd.command = ATA_CMD_ID_ATA; |
| 383 | ata_cmnd.sector_count = 1; |
| 384 | ata_cmnd.size = ata_cmnd.arglen = ATA_ID_WORDS * 2; |
| 385 | ata_cmnd.buffer = dev->bounce_lpar; |
| 386 | ata_cmnd.proto = PIO_DATA_IN_PROTO; |
| 387 | ata_cmnd.in_out = DIR_READ; |
| 388 | |
| 389 | res = ps3stor_send_command(dev, LV1_STORAGE_SEND_ATA_COMMAND, |
| 390 | ps3_mm_phys_to_lpar(__pa(&ata_cmnd)), |
| 391 | sizeof(ata_cmnd), ata_cmnd.buffer, |
| 392 | ata_cmnd.arglen); |
| 393 | if (res) { |
| 394 | dev_err(&dev->sbd.core, "%s:%u: identify disk failed 0x%lx\n", |
| 395 | __func__, __LINE__, res); |
| 396 | return -EIO; |
| 397 | } |
| 398 | |
| 399 | swap_buf_le16(id, ATA_ID_WORDS); |
| 400 | |
| 401 | /* All we're interested in are raw capacity and model name */ |
| 402 | priv->raw_capacity = ata_id_n_sectors(id); |
| 403 | ata_id_c_string(id, priv->model, ATA_ID_PROD, sizeof(priv->model)); |
| 404 | return 0; |
| 405 | } |
| 406 | |
| 407 | static void ps3disk_prepare_flush(request_queue_t *q, struct request *req) |
| 408 | { |
| 409 | struct ps3_storage_device *dev = q->queuedata; |
| 410 | |
| 411 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); |
| 412 | |
| 413 | memset(req->cmd, 0, sizeof(req->cmd)); |
| 414 | req->cmd_type = REQ_TYPE_FLUSH; |
| 415 | } |
| 416 | |
| 417 | static int ps3disk_issue_flush(request_queue_t *q, struct gendisk *gendisk, |
| 418 | sector_t *sector) |
| 419 | { |
| 420 | struct ps3_storage_device *dev = q->queuedata; |
| 421 | struct request *req; |
| 422 | int res; |
| 423 | |
| 424 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); |
| 425 | |
| 426 | req = blk_get_request(q, WRITE, __GFP_WAIT); |
| 427 | ps3disk_prepare_flush(q, req); |
| 428 | res = blk_execute_rq(q, gendisk, req, 0); |
| 429 | if (res) |
| 430 | dev_err(&dev->sbd.core, "%s:%u: flush request failed %d\n", |
| 431 | __func__, __LINE__, res); |
| 432 | blk_put_request(req); |
| 433 | return res; |
| 434 | } |
| 435 | |
| 436 | |
| 437 | static unsigned long ps3disk_mask; |
| 438 | |
| 439 | static DEFINE_MUTEX(ps3disk_mask_mutex); |
| 440 | |
| 441 | static int __devinit ps3disk_probe(struct ps3_system_bus_device *_dev) |
| 442 | { |
| 443 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); |
| 444 | struct ps3disk_private *priv; |
| 445 | int error; |
| 446 | unsigned int devidx; |
| 447 | struct request_queue *queue; |
| 448 | struct gendisk *gendisk; |
| 449 | |
| 450 | if (dev->blk_size < 512) { |
| 451 | dev_err(&dev->sbd.core, |
| 452 | "%s:%u: cannot handle block size %lu\n", __func__, |
| 453 | __LINE__, dev->blk_size); |
| 454 | return -EINVAL; |
| 455 | } |
| 456 | |
| 457 | BUILD_BUG_ON(PS3DISK_MAX_DISKS > BITS_PER_LONG); |
| 458 | mutex_lock(&ps3disk_mask_mutex); |
| 459 | devidx = find_first_zero_bit(&ps3disk_mask, PS3DISK_MAX_DISKS); |
| 460 | if (devidx >= PS3DISK_MAX_DISKS) { |
| 461 | dev_err(&dev->sbd.core, "%s:%u: Too many disks\n", __func__, |
| 462 | __LINE__); |
| 463 | mutex_unlock(&ps3disk_mask_mutex); |
| 464 | return -ENOSPC; |
| 465 | } |
| 466 | __set_bit(devidx, &ps3disk_mask); |
| 467 | mutex_unlock(&ps3disk_mask_mutex); |
| 468 | |
| 469 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
| 470 | if (!priv) { |
| 471 | error = -ENOMEM; |
| 472 | goto fail; |
| 473 | } |
| 474 | |
| 475 | dev->sbd.core.driver_data = priv; |
| 476 | spin_lock_init(&priv->lock); |
| 477 | |
| 478 | dev->bounce_size = BOUNCE_SIZE; |
| 479 | dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA); |
| 480 | if (!dev->bounce_buf) { |
| 481 | error = -ENOMEM; |
| 482 | goto fail_free_priv; |
| 483 | } |
| 484 | |
| 485 | error = ps3stor_setup(dev, ps3disk_interrupt); |
| 486 | if (error) |
| 487 | goto fail_free_bounce; |
| 488 | |
| 489 | ps3disk_identify(dev); |
| 490 | |
| 491 | queue = blk_init_queue(ps3disk_request, &priv->lock); |
| 492 | if (!queue) { |
| 493 | dev_err(&dev->sbd.core, "%s:%u: blk_init_queue failed\n", |
| 494 | __func__, __LINE__); |
| 495 | error = -ENOMEM; |
| 496 | goto fail_teardown; |
| 497 | } |
| 498 | |
| 499 | priv->queue = queue; |
| 500 | queue->queuedata = dev; |
| 501 | |
| 502 | blk_queue_bounce_limit(queue, BLK_BOUNCE_HIGH); |
| 503 | |
| 504 | blk_queue_max_sectors(queue, dev->bounce_size >> 9); |
| 505 | blk_queue_segment_boundary(queue, -1UL); |
| 506 | blk_queue_dma_alignment(queue, dev->blk_size-1); |
| 507 | blk_queue_hardsect_size(queue, dev->blk_size); |
| 508 | |
| 509 | blk_queue_issue_flush_fn(queue, ps3disk_issue_flush); |
| 510 | blk_queue_ordered(queue, QUEUE_ORDERED_DRAIN_FLUSH, |
| 511 | ps3disk_prepare_flush); |
| 512 | |
| 513 | blk_queue_max_phys_segments(queue, -1); |
| 514 | blk_queue_max_hw_segments(queue, -1); |
| 515 | blk_queue_max_segment_size(queue, dev->bounce_size); |
| 516 | |
| 517 | gendisk = alloc_disk(PS3DISK_MINORS); |
| 518 | if (!gendisk) { |
| 519 | dev_err(&dev->sbd.core, "%s:%u: alloc_disk failed\n", __func__, |
| 520 | __LINE__); |
| 521 | error = -ENOMEM; |
| 522 | goto fail_cleanup_queue; |
| 523 | } |
| 524 | |
| 525 | priv->gendisk = gendisk; |
| 526 | gendisk->major = ps3disk_major; |
| 527 | gendisk->first_minor = devidx * PS3DISK_MINORS; |
| 528 | gendisk->fops = &ps3disk_fops; |
| 529 | gendisk->queue = queue; |
| 530 | gendisk->private_data = dev; |
| 531 | gendisk->driverfs_dev = &dev->sbd.core; |
| 532 | snprintf(gendisk->disk_name, sizeof(gendisk->disk_name), PS3DISK_NAME, |
| 533 | devidx+'a'); |
| 534 | priv->blocking_factor = dev->blk_size >> 9; |
| 535 | set_capacity(gendisk, |
| 536 | dev->regions[dev->region_idx].size*priv->blocking_factor); |
| 537 | |
| 538 | dev_info(&dev->sbd.core, |
| 539 | "%s is a %s (%lu MiB total, %lu MiB for OtherOS)\n", |
| 540 | gendisk->disk_name, priv->model, priv->raw_capacity >> 11, |
| 541 | get_capacity(gendisk) >> 11); |
| 542 | |
| 543 | add_disk(gendisk); |
| 544 | return 0; |
| 545 | |
| 546 | fail_cleanup_queue: |
| 547 | blk_cleanup_queue(queue); |
| 548 | fail_teardown: |
| 549 | ps3stor_teardown(dev); |
| 550 | fail_free_bounce: |
| 551 | kfree(dev->bounce_buf); |
| 552 | fail_free_priv: |
| 553 | kfree(priv); |
| 554 | dev->sbd.core.driver_data = NULL; |
| 555 | fail: |
| 556 | mutex_lock(&ps3disk_mask_mutex); |
| 557 | __clear_bit(devidx, &ps3disk_mask); |
| 558 | mutex_unlock(&ps3disk_mask_mutex); |
| 559 | return error; |
| 560 | } |
| 561 | |
| 562 | static int ps3disk_remove(struct ps3_system_bus_device *_dev) |
| 563 | { |
| 564 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); |
| 565 | struct ps3disk_private *priv = dev->sbd.core.driver_data; |
| 566 | |
| 567 | mutex_lock(&ps3disk_mask_mutex); |
| 568 | __clear_bit(priv->gendisk->first_minor / PS3DISK_MINORS, |
| 569 | &ps3disk_mask); |
| 570 | mutex_unlock(&ps3disk_mask_mutex); |
| 571 | del_gendisk(priv->gendisk); |
| 572 | blk_cleanup_queue(priv->queue); |
| 573 | put_disk(priv->gendisk); |
| 574 | dev_notice(&dev->sbd.core, "Synchronizing disk cache\n"); |
| 575 | ps3disk_sync_cache(dev); |
| 576 | ps3stor_teardown(dev); |
| 577 | kfree(dev->bounce_buf); |
| 578 | kfree(priv); |
| 579 | dev->sbd.core.driver_data = NULL; |
| 580 | return 0; |
| 581 | } |
| 582 | |
| 583 | static struct ps3_system_bus_driver ps3disk = { |
| 584 | .match_id = PS3_MATCH_ID_STOR_DISK, |
| 585 | .core.name = DEVICE_NAME, |
| 586 | .core.owner = THIS_MODULE, |
| 587 | .probe = ps3disk_probe, |
| 588 | .remove = ps3disk_remove, |
| 589 | .shutdown = ps3disk_remove, |
| 590 | }; |
| 591 | |
| 592 | |
| 593 | static int __init ps3disk_init(void) |
| 594 | { |
| 595 | int error; |
| 596 | |
| 597 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) |
| 598 | return -ENODEV; |
| 599 | |
| 600 | error = register_blkdev(0, DEVICE_NAME); |
| 601 | if (error <= 0) { |
| 602 | printk(KERN_ERR "%s:%u: register_blkdev failed %d\n", __func__, |
| 603 | __LINE__, error); |
| 604 | return error; |
| 605 | } |
| 606 | ps3disk_major = error; |
| 607 | |
| 608 | pr_info("%s:%u: registered block device major %d\n", __func__, |
| 609 | __LINE__, ps3disk_major); |
| 610 | |
| 611 | error = ps3_system_bus_driver_register(&ps3disk); |
| 612 | if (error) |
| 613 | unregister_blkdev(ps3disk_major, DEVICE_NAME); |
| 614 | |
| 615 | return error; |
| 616 | } |
| 617 | |
| 618 | static void __exit ps3disk_exit(void) |
| 619 | { |
| 620 | ps3_system_bus_driver_unregister(&ps3disk); |
| 621 | unregister_blkdev(ps3disk_major, DEVICE_NAME); |
| 622 | } |
| 623 | |
| 624 | module_init(ps3disk_init); |
| 625 | module_exit(ps3disk_exit); |
| 626 | |
| 627 | MODULE_LICENSE("GPL"); |
| 628 | MODULE_DESCRIPTION("PS3 Disk Storage Driver"); |
| 629 | MODULE_AUTHOR("Sony Corporation"); |
| 630 | MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_DISK); |