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> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 23 | #include <linux/slab.h> |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 24 | |
| 25 | #include <asm/lv1call.h> |
| 26 | #include <asm/ps3stor.h> |
| 27 | #include <asm/firmware.h> |
| 28 | |
| 29 | |
| 30 | #define DEVICE_NAME "ps3disk" |
| 31 | |
| 32 | #define BOUNCE_SIZE (64*1024) |
| 33 | |
| 34 | #define PS3DISK_MAX_DISKS 16 |
| 35 | #define PS3DISK_MINORS 16 |
| 36 | |
| 37 | |
| 38 | #define PS3DISK_NAME "ps3d%c" |
| 39 | |
| 40 | |
| 41 | struct ps3disk_private { |
| 42 | spinlock_t lock; /* Request queue spinlock */ |
| 43 | struct request_queue *queue; |
| 44 | struct gendisk *gendisk; |
| 45 | unsigned int blocking_factor; |
| 46 | struct request *req; |
| 47 | u64 raw_capacity; |
| 48 | unsigned char model[ATA_ID_PROD_LEN+1]; |
| 49 | }; |
| 50 | |
| 51 | |
| 52 | #define LV1_STORAGE_SEND_ATA_COMMAND (2) |
| 53 | #define LV1_STORAGE_ATA_HDDOUT (0x23) |
| 54 | |
| 55 | struct lv1_ata_cmnd_block { |
| 56 | u16 features; |
| 57 | u16 sector_count; |
| 58 | u16 LBA_low; |
| 59 | u16 LBA_mid; |
| 60 | u16 LBA_high; |
| 61 | u8 device; |
| 62 | u8 command; |
| 63 | u32 is_ext; |
| 64 | u32 proto; |
| 65 | u32 in_out; |
| 66 | u32 size; |
| 67 | u64 buffer; |
| 68 | u32 arglen; |
| 69 | }; |
| 70 | |
| 71 | enum lv1_ata_proto { |
| 72 | NON_DATA_PROTO = 0, |
| 73 | PIO_DATA_IN_PROTO = 1, |
| 74 | PIO_DATA_OUT_PROTO = 2, |
| 75 | DMA_PROTO = 3 |
| 76 | }; |
| 77 | |
| 78 | enum lv1_ata_in_out { |
| 79 | DIR_WRITE = 0, /* memory -> device */ |
| 80 | DIR_READ = 1 /* device -> memory */ |
| 81 | }; |
| 82 | |
| 83 | static int ps3disk_major; |
| 84 | |
| 85 | |
Alexey Dobriyan | 83d5cde | 2009-09-21 17:01:13 -0700 | [diff] [blame] | 86 | static const struct block_device_operations ps3disk_fops = { |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 87 | .owner = THIS_MODULE, |
| 88 | }; |
| 89 | |
| 90 | |
| 91 | static void ps3disk_scatter_gather(struct ps3_storage_device *dev, |
| 92 | struct request *req, int gather) |
| 93 | { |
| 94 | unsigned int offset = 0; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 95 | struct req_iterator iter; |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 96 | struct bio_vec *bvec; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 97 | unsigned int i = 0; |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 98 | size_t size; |
| 99 | void *buf; |
| 100 | |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 101 | rq_for_each_segment(bvec, req, iter) { |
| 102 | unsigned long flags; |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 103 | dev_dbg(&dev->sbd.core, |
| 104 | "%s:%u: bio %u: %u segs %u sectors from %lu\n", |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 105 | __func__, __LINE__, i, bio_segments(iter.bio), |
Geert Uytterhoeven | 31e103c | 2008-04-25 12:46:20 +0200 | [diff] [blame] | 106 | bio_sectors(iter.bio), iter.bio->bi_sector); |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 107 | |
Jens Axboe | 6c92e69 | 2007-08-16 13:43:12 +0200 | [diff] [blame] | 108 | size = bvec->bv_len; |
| 109 | buf = bvec_kmap_irq(bvec, &flags); |
| 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(bvec->bv_page); |
| 116 | bvec_kunmap_irq(bvec, &flags); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 117 | i++; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | static int ps3disk_submit_request_sg(struct ps3_storage_device *dev, |
| 122 | struct request *req) |
| 123 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 124 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 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; |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 132 | struct bio_vec *bv; |
| 133 | struct req_iterator iter; |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 134 | |
NeilBrown | 5705f70 | 2007-09-25 12:35:59 +0200 | [diff] [blame] | 135 | rq_for_each_segment(bv, req, iter) |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 136 | n++; |
| 137 | dev_dbg(&dev->sbd.core, |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 138 | "%s:%u: %s req has %u bvecs for %u sectors\n", |
| 139 | __func__, __LINE__, op, n, blk_rq_sectors(req)); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 140 | #endif |
| 141 | |
Tejun Heo | 83096eb | 2009-05-07 22:24:39 +0900 | [diff] [blame] | 142 | start_sector = blk_rq_pos(req) * priv->blocking_factor; |
| 143 | sectors = blk_rq_sectors(req) * priv->blocking_factor; |
Stephen Rothwell | e377c6e | 2009-01-13 20:04:48 +0000 | [diff] [blame] | 144 | dev_dbg(&dev->sbd.core, "%s:%u: %s %llu sectors starting at %llu\n", |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 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); |
Tejun Heo | 10e1e62 | 2009-05-08 11:54:07 +0900 | [diff] [blame] | 161 | __blk_end_request_all(req, -EIO); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 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 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 172 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 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) { |
Stephen Rothwell | e377c6e | 2009-01-13 20:04:48 +0000 | [diff] [blame] | 181 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%llx\n", |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 182 | __func__, __LINE__, res); |
Tejun Heo | 10e1e62 | 2009-05-08 11:54:07 +0900 | [diff] [blame] | 183 | __blk_end_request_all(req, -EIO); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 184 | return 0; |
| 185 | } |
| 186 | |
| 187 | priv->req = req; |
| 188 | return 1; |
| 189 | } |
| 190 | |
| 191 | static void ps3disk_do_request(struct ps3_storage_device *dev, |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 192 | struct request_queue *q) |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 193 | { |
| 194 | struct request *req; |
| 195 | |
| 196 | dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__); |
| 197 | |
Tejun Heo | 9934c8c | 2009-05-08 11:54:16 +0900 | [diff] [blame] | 198 | while ((req = blk_fetch_request(q))) { |
FUJITA Tomonori | 98d8c8f | 2010-07-03 17:45:36 +0900 | [diff] [blame] | 199 | if (req->cmd_flags & REQ_FLUSH) { |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 200 | if (ps3disk_submit_flush_request(dev, req)) |
| 201 | break; |
FUJITA Tomonori | 98d8c8f | 2010-07-03 17:45:36 +0900 | [diff] [blame] | 202 | } else if (req->cmd_type == REQ_TYPE_FS) { |
| 203 | if (ps3disk_submit_request_sg(dev, req)) |
| 204 | break; |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 205 | } else { |
| 206 | blk_dump_rq_flags(req, DEVICE_NAME " bad request"); |
Tejun Heo | 10e1e62 | 2009-05-08 11:54:07 +0900 | [diff] [blame] | 207 | __blk_end_request_all(req, -EIO); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 208 | continue; |
| 209 | } |
| 210 | } |
| 211 | } |
| 212 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 213 | static void ps3disk_request(struct request_queue *q) |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 214 | { |
| 215 | struct ps3_storage_device *dev = q->queuedata; |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 216 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 217 | |
| 218 | if (priv->req) { |
| 219 | dev_dbg(&dev->sbd.core, "%s:%u busy\n", __func__, __LINE__); |
| 220 | return; |
| 221 | } |
| 222 | |
| 223 | ps3disk_do_request(dev, q); |
| 224 | } |
| 225 | |
| 226 | static irqreturn_t ps3disk_interrupt(int irq, void *data) |
| 227 | { |
| 228 | struct ps3_storage_device *dev = data; |
| 229 | struct ps3disk_private *priv; |
| 230 | struct request *req; |
Kiyoshi Ueda | f01ab25 | 2007-12-11 17:44:39 -0500 | [diff] [blame] | 231 | int res, read, error; |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 232 | u64 tag, status; |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 233 | const char *op; |
| 234 | |
| 235 | res = lv1_storage_get_async_status(dev->sbd.dev_id, &tag, &status); |
| 236 | |
| 237 | if (tag != dev->tag) |
| 238 | dev_err(&dev->sbd.core, |
Stephen Rothwell | e377c6e | 2009-01-13 20:04:48 +0000 | [diff] [blame] | 239 | "%s:%u: tag mismatch, got %llx, expected %llx\n", |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 240 | __func__, __LINE__, tag, dev->tag); |
| 241 | |
| 242 | if (res) { |
Stephen Rothwell | e377c6e | 2009-01-13 20:04:48 +0000 | [diff] [blame] | 243 | dev_err(&dev->sbd.core, "%s:%u: res=%d status=0x%llx\n", |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 244 | __func__, __LINE__, res, status); |
| 245 | return IRQ_HANDLED; |
| 246 | } |
| 247 | |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 248 | priv = ps3_system_bus_get_drvdata(&dev->sbd); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 249 | req = priv->req; |
| 250 | if (!req) { |
| 251 | dev_dbg(&dev->sbd.core, |
| 252 | "%s:%u non-block layer request completed\n", __func__, |
| 253 | __LINE__); |
| 254 | dev->lv1_status = status; |
| 255 | complete(&dev->done); |
| 256 | return IRQ_HANDLED; |
| 257 | } |
| 258 | |
FUJITA Tomonori | 98d8c8f | 2010-07-03 17:45:36 +0900 | [diff] [blame] | 259 | if (req->cmd_flags & REQ_FLUSH) { |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 260 | read = 0; |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 261 | op = "flush"; |
| 262 | } else { |
| 263 | read = !rq_data_dir(req); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 264 | op = read ? "read" : "write"; |
| 265 | } |
| 266 | if (status) { |
Stephen Rothwell | e377c6e | 2009-01-13 20:04:48 +0000 | [diff] [blame] | 267 | dev_dbg(&dev->sbd.core, "%s:%u: %s failed 0x%llx\n", __func__, |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 268 | __LINE__, op, status); |
Kiyoshi Ueda | f01ab25 | 2007-12-11 17:44:39 -0500 | [diff] [blame] | 269 | error = -EIO; |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 270 | } else { |
| 271 | dev_dbg(&dev->sbd.core, "%s:%u: %s completed\n", __func__, |
| 272 | __LINE__, op); |
Kiyoshi Ueda | f01ab25 | 2007-12-11 17:44:39 -0500 | [diff] [blame] | 273 | error = 0; |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 274 | if (read) |
| 275 | ps3disk_scatter_gather(dev, req, 0); |
| 276 | } |
| 277 | |
| 278 | spin_lock(&priv->lock); |
Tejun Heo | cd4c34e | 2009-04-28 13:06:07 +0900 | [diff] [blame] | 279 | __blk_end_request_all(req, error); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 280 | priv->req = NULL; |
| 281 | ps3disk_do_request(dev, priv->queue); |
| 282 | spin_unlock(&priv->lock); |
| 283 | |
| 284 | return IRQ_HANDLED; |
| 285 | } |
| 286 | |
| 287 | static int ps3disk_sync_cache(struct ps3_storage_device *dev) |
| 288 | { |
| 289 | u64 res; |
| 290 | |
| 291 | dev_dbg(&dev->sbd.core, "%s:%u: sync cache\n", __func__, __LINE__); |
| 292 | |
| 293 | res = ps3stor_send_command(dev, LV1_STORAGE_ATA_HDDOUT, 0, 0, 0, 0); |
| 294 | if (res) { |
Stephen Rothwell | e377c6e | 2009-01-13 20:04:48 +0000 | [diff] [blame] | 295 | dev_err(&dev->sbd.core, "%s:%u: sync cache failed 0x%llx\n", |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 296 | __func__, __LINE__, res); |
| 297 | return -EIO; |
| 298 | } |
| 299 | return 0; |
| 300 | } |
| 301 | |
| 302 | |
| 303 | /* ATA helpers copied from drivers/ata/libata-core.c */ |
| 304 | |
| 305 | static void swap_buf_le16(u16 *buf, unsigned int buf_words) |
| 306 | { |
| 307 | #ifdef __BIG_ENDIAN |
| 308 | unsigned int i; |
| 309 | |
| 310 | for (i = 0; i < buf_words; i++) |
| 311 | buf[i] = le16_to_cpu(buf[i]); |
| 312 | #endif /* __BIG_ENDIAN */ |
| 313 | } |
| 314 | |
| 315 | static u64 ata_id_n_sectors(const u16 *id) |
| 316 | { |
| 317 | if (ata_id_has_lba(id)) { |
| 318 | if (ata_id_has_lba48(id)) |
| 319 | return ata_id_u64(id, 100); |
| 320 | else |
| 321 | return ata_id_u32(id, 60); |
| 322 | } else { |
| 323 | if (ata_id_current_chs_valid(id)) |
| 324 | return ata_id_u32(id, 57); |
| 325 | else |
| 326 | return id[1] * id[3] * id[6]; |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | static void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, |
| 331 | unsigned int len) |
| 332 | { |
| 333 | unsigned int c; |
| 334 | |
| 335 | while (len > 0) { |
| 336 | c = id[ofs] >> 8; |
| 337 | *s = c; |
| 338 | s++; |
| 339 | |
| 340 | c = id[ofs] & 0xff; |
| 341 | *s = c; |
| 342 | s++; |
| 343 | |
| 344 | ofs++; |
| 345 | len -= 2; |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | static void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, |
| 350 | unsigned int len) |
| 351 | { |
| 352 | unsigned char *p; |
| 353 | |
| 354 | WARN_ON(!(len & 1)); |
| 355 | |
| 356 | ata_id_string(id, s, ofs, len - 1); |
| 357 | |
| 358 | p = s + strnlen(s, len - 1); |
| 359 | while (p > s && p[-1] == ' ') |
| 360 | p--; |
| 361 | *p = '\0'; |
| 362 | } |
| 363 | |
| 364 | static int ps3disk_identify(struct ps3_storage_device *dev) |
| 365 | { |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 366 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 367 | struct lv1_ata_cmnd_block ata_cmnd; |
| 368 | u16 *id = dev->bounce_buf; |
| 369 | u64 res; |
| 370 | |
| 371 | dev_dbg(&dev->sbd.core, "%s:%u: identify disk\n", __func__, __LINE__); |
| 372 | |
| 373 | memset(&ata_cmnd, 0, sizeof(struct lv1_ata_cmnd_block)); |
| 374 | ata_cmnd.command = ATA_CMD_ID_ATA; |
| 375 | ata_cmnd.sector_count = 1; |
| 376 | ata_cmnd.size = ata_cmnd.arglen = ATA_ID_WORDS * 2; |
| 377 | ata_cmnd.buffer = dev->bounce_lpar; |
| 378 | ata_cmnd.proto = PIO_DATA_IN_PROTO; |
| 379 | ata_cmnd.in_out = DIR_READ; |
| 380 | |
| 381 | res = ps3stor_send_command(dev, LV1_STORAGE_SEND_ATA_COMMAND, |
| 382 | ps3_mm_phys_to_lpar(__pa(&ata_cmnd)), |
| 383 | sizeof(ata_cmnd), ata_cmnd.buffer, |
| 384 | ata_cmnd.arglen); |
| 385 | if (res) { |
Stephen Rothwell | e377c6e | 2009-01-13 20:04:48 +0000 | [diff] [blame] | 386 | dev_err(&dev->sbd.core, "%s:%u: identify disk failed 0x%llx\n", |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 387 | __func__, __LINE__, res); |
| 388 | return -EIO; |
| 389 | } |
| 390 | |
| 391 | swap_buf_le16(id, ATA_ID_WORDS); |
| 392 | |
| 393 | /* All we're interested in are raw capacity and model name */ |
| 394 | priv->raw_capacity = ata_id_n_sectors(id); |
| 395 | ata_id_c_string(id, priv->model, ATA_ID_PROD, sizeof(priv->model)); |
| 396 | return 0; |
| 397 | } |
| 398 | |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 399 | static unsigned long ps3disk_mask; |
| 400 | |
| 401 | static DEFINE_MUTEX(ps3disk_mask_mutex); |
| 402 | |
| 403 | static int __devinit ps3disk_probe(struct ps3_system_bus_device *_dev) |
| 404 | { |
| 405 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); |
| 406 | struct ps3disk_private *priv; |
| 407 | int error; |
| 408 | unsigned int devidx; |
| 409 | struct request_queue *queue; |
| 410 | struct gendisk *gendisk; |
| 411 | |
| 412 | if (dev->blk_size < 512) { |
| 413 | dev_err(&dev->sbd.core, |
Stephen Rothwell | e377c6e | 2009-01-13 20:04:48 +0000 | [diff] [blame] | 414 | "%s:%u: cannot handle block size %llu\n", __func__, |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 415 | __LINE__, dev->blk_size); |
| 416 | return -EINVAL; |
| 417 | } |
| 418 | |
| 419 | BUILD_BUG_ON(PS3DISK_MAX_DISKS > BITS_PER_LONG); |
| 420 | mutex_lock(&ps3disk_mask_mutex); |
| 421 | devidx = find_first_zero_bit(&ps3disk_mask, PS3DISK_MAX_DISKS); |
| 422 | if (devidx >= PS3DISK_MAX_DISKS) { |
| 423 | dev_err(&dev->sbd.core, "%s:%u: Too many disks\n", __func__, |
| 424 | __LINE__); |
| 425 | mutex_unlock(&ps3disk_mask_mutex); |
| 426 | return -ENOSPC; |
| 427 | } |
| 428 | __set_bit(devidx, &ps3disk_mask); |
| 429 | mutex_unlock(&ps3disk_mask_mutex); |
| 430 | |
| 431 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); |
| 432 | if (!priv) { |
| 433 | error = -ENOMEM; |
| 434 | goto fail; |
| 435 | } |
| 436 | |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 437 | ps3_system_bus_set_drvdata(_dev, priv); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 438 | spin_lock_init(&priv->lock); |
| 439 | |
| 440 | dev->bounce_size = BOUNCE_SIZE; |
| 441 | dev->bounce_buf = kmalloc(BOUNCE_SIZE, GFP_DMA); |
| 442 | if (!dev->bounce_buf) { |
| 443 | error = -ENOMEM; |
| 444 | goto fail_free_priv; |
| 445 | } |
| 446 | |
| 447 | error = ps3stor_setup(dev, ps3disk_interrupt); |
| 448 | if (error) |
| 449 | goto fail_free_bounce; |
| 450 | |
| 451 | ps3disk_identify(dev); |
| 452 | |
| 453 | queue = blk_init_queue(ps3disk_request, &priv->lock); |
| 454 | if (!queue) { |
| 455 | dev_err(&dev->sbd.core, "%s:%u: blk_init_queue failed\n", |
| 456 | __func__, __LINE__); |
| 457 | error = -ENOMEM; |
| 458 | goto fail_teardown; |
| 459 | } |
| 460 | |
| 461 | priv->queue = queue; |
| 462 | queue->queuedata = dev; |
| 463 | |
| 464 | blk_queue_bounce_limit(queue, BLK_BOUNCE_HIGH); |
| 465 | |
Martin K. Petersen | 086fa5f | 2010-02-26 00:20:38 -0500 | [diff] [blame] | 466 | blk_queue_max_hw_sectors(queue, dev->bounce_size >> 9); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 467 | blk_queue_segment_boundary(queue, -1UL); |
| 468 | blk_queue_dma_alignment(queue, dev->blk_size-1); |
Martin K. Petersen | e1defc4 | 2009-05-22 17:17:49 -0400 | [diff] [blame] | 469 | blk_queue_logical_block_size(queue, dev->blk_size); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 470 | |
Tejun Heo | 4913efe | 2010-09-03 11:56:16 +0200 | [diff] [blame^] | 471 | blk_queue_flush(queue, REQ_FLUSH); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 472 | |
Martin K. Petersen | 8a78362 | 2010-02-26 00:20:39 -0500 | [diff] [blame] | 473 | blk_queue_max_segments(queue, -1); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 474 | blk_queue_max_segment_size(queue, dev->bounce_size); |
| 475 | |
| 476 | gendisk = alloc_disk(PS3DISK_MINORS); |
| 477 | if (!gendisk) { |
| 478 | dev_err(&dev->sbd.core, "%s:%u: alloc_disk failed\n", __func__, |
| 479 | __LINE__); |
| 480 | error = -ENOMEM; |
| 481 | goto fail_cleanup_queue; |
| 482 | } |
| 483 | |
| 484 | priv->gendisk = gendisk; |
| 485 | gendisk->major = ps3disk_major; |
| 486 | gendisk->first_minor = devidx * PS3DISK_MINORS; |
| 487 | gendisk->fops = &ps3disk_fops; |
| 488 | gendisk->queue = queue; |
| 489 | gendisk->private_data = dev; |
| 490 | gendisk->driverfs_dev = &dev->sbd.core; |
| 491 | snprintf(gendisk->disk_name, sizeof(gendisk->disk_name), PS3DISK_NAME, |
| 492 | devidx+'a'); |
| 493 | priv->blocking_factor = dev->blk_size >> 9; |
| 494 | set_capacity(gendisk, |
| 495 | dev->regions[dev->region_idx].size*priv->blocking_factor); |
| 496 | |
| 497 | dev_info(&dev->sbd.core, |
Stephen Rothwell | e377c6e | 2009-01-13 20:04:48 +0000 | [diff] [blame] | 498 | "%s is a %s (%llu MiB total, %lu MiB for OtherOS)\n", |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 499 | gendisk->disk_name, priv->model, priv->raw_capacity >> 11, |
| 500 | get_capacity(gendisk) >> 11); |
| 501 | |
| 502 | add_disk(gendisk); |
| 503 | return 0; |
| 504 | |
| 505 | fail_cleanup_queue: |
| 506 | blk_cleanup_queue(queue); |
| 507 | fail_teardown: |
| 508 | ps3stor_teardown(dev); |
| 509 | fail_free_bounce: |
| 510 | kfree(dev->bounce_buf); |
| 511 | fail_free_priv: |
| 512 | kfree(priv); |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 513 | ps3_system_bus_set_drvdata(_dev, NULL); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 514 | fail: |
| 515 | mutex_lock(&ps3disk_mask_mutex); |
| 516 | __clear_bit(devidx, &ps3disk_mask); |
| 517 | mutex_unlock(&ps3disk_mask_mutex); |
| 518 | return error; |
| 519 | } |
| 520 | |
| 521 | static int ps3disk_remove(struct ps3_system_bus_device *_dev) |
| 522 | { |
| 523 | struct ps3_storage_device *dev = to_ps3_storage_device(&_dev->core); |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 524 | struct ps3disk_private *priv = ps3_system_bus_get_drvdata(&dev->sbd); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 525 | |
| 526 | mutex_lock(&ps3disk_mask_mutex); |
Tejun Heo | f331c02 | 2008-09-03 09:01:48 +0200 | [diff] [blame] | 527 | __clear_bit(MINOR(disk_devt(priv->gendisk)) / PS3DISK_MINORS, |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 528 | &ps3disk_mask); |
| 529 | mutex_unlock(&ps3disk_mask_mutex); |
| 530 | del_gendisk(priv->gendisk); |
| 531 | blk_cleanup_queue(priv->queue); |
| 532 | put_disk(priv->gendisk); |
| 533 | dev_notice(&dev->sbd.core, "Synchronizing disk cache\n"); |
| 534 | ps3disk_sync_cache(dev); |
| 535 | ps3stor_teardown(dev); |
| 536 | kfree(dev->bounce_buf); |
| 537 | kfree(priv); |
Geert Uytterhoeven | 03fa68c | 2009-06-10 04:38:54 +0000 | [diff] [blame] | 538 | ps3_system_bus_set_drvdata(_dev, NULL); |
Geert Uytterhoeven | c6131fa | 2007-07-21 04:37:45 -0700 | [diff] [blame] | 539 | return 0; |
| 540 | } |
| 541 | |
| 542 | static struct ps3_system_bus_driver ps3disk = { |
| 543 | .match_id = PS3_MATCH_ID_STOR_DISK, |
| 544 | .core.name = DEVICE_NAME, |
| 545 | .core.owner = THIS_MODULE, |
| 546 | .probe = ps3disk_probe, |
| 547 | .remove = ps3disk_remove, |
| 548 | .shutdown = ps3disk_remove, |
| 549 | }; |
| 550 | |
| 551 | |
| 552 | static int __init ps3disk_init(void) |
| 553 | { |
| 554 | int error; |
| 555 | |
| 556 | if (!firmware_has_feature(FW_FEATURE_PS3_LV1)) |
| 557 | return -ENODEV; |
| 558 | |
| 559 | error = register_blkdev(0, DEVICE_NAME); |
| 560 | if (error <= 0) { |
| 561 | printk(KERN_ERR "%s:%u: register_blkdev failed %d\n", __func__, |
| 562 | __LINE__, error); |
| 563 | return error; |
| 564 | } |
| 565 | ps3disk_major = error; |
| 566 | |
| 567 | pr_info("%s:%u: registered block device major %d\n", __func__, |
| 568 | __LINE__, ps3disk_major); |
| 569 | |
| 570 | error = ps3_system_bus_driver_register(&ps3disk); |
| 571 | if (error) |
| 572 | unregister_blkdev(ps3disk_major, DEVICE_NAME); |
| 573 | |
| 574 | return error; |
| 575 | } |
| 576 | |
| 577 | static void __exit ps3disk_exit(void) |
| 578 | { |
| 579 | ps3_system_bus_driver_unregister(&ps3disk); |
| 580 | unregister_blkdev(ps3disk_major, DEVICE_NAME); |
| 581 | } |
| 582 | |
| 583 | module_init(ps3disk_init); |
| 584 | module_exit(ps3disk_exit); |
| 585 | |
| 586 | MODULE_LICENSE("GPL"); |
| 587 | MODULE_DESCRIPTION("PS3 Disk Storage Driver"); |
| 588 | MODULE_AUTHOR("Sony Corporation"); |
| 589 | MODULE_ALIAS(PS3_MODULE_ALIAS_STOR_DISK); |