Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/ide/ide-cd.c |
| 3 | * |
| 4 | * Copyright (C) 1994, 1995, 1996 scott snyder <snyder@fnald0.fnal.gov> |
| 5 | * Copyright (C) 1996-1998 Erik Andersen <andersee@debian.org> |
| 6 | * Copyright (C) 1998-2000 Jens Axboe <axboe@suse.de> |
| 7 | * |
| 8 | * May be copied or modified under the terms of the GNU General Public |
| 9 | * License. See linux/COPYING for more information. |
| 10 | * |
| 11 | * ATAPI CD-ROM driver. To be used with ide.c. |
| 12 | * See Documentation/cdrom/ide-cd for usage information. |
| 13 | * |
| 14 | * Suggestions are welcome. Patches that work are more welcome though. ;-) |
| 15 | * For those wishing to work on this driver, please be sure you download |
| 16 | * and comply with the latest Mt. Fuji (SFF8090 version 4) and ATAPI |
| 17 | * (SFF-8020i rev 2.6) standards. These documents can be obtained by |
| 18 | * anonymous ftp from: |
| 19 | * ftp://fission.dt.wdc.com/pub/standards/SFF_atapi/spec/SFF8020-r2.6/PS/8020r26.ps |
| 20 | * ftp://ftp.avc-pioneer.com/Mtfuji4/Spec/Fuji4r10.pdf |
| 21 | * |
| 22 | * Drives that deviate from these standards will be accommodated as much |
| 23 | * as possible via compile time or command-line options. Since I only have |
| 24 | * a few drives, you generally need to send me patches... |
| 25 | * |
| 26 | * ---------------------------------- |
| 27 | * TO DO LIST: |
| 28 | * -Make it so that Pioneer CD DR-A24X and friends don't get screwed up on |
| 29 | * boot |
| 30 | * |
Bartlomiej Zolnierkiewicz | 0355335 | 2008-02-01 23:09:18 +0100 | [diff] [blame] | 31 | * For historical changelog please see: |
| 32 | * Documentation/ide/ChangeLog.ide-cd.1994-2004 |
| 33 | */ |
| 34 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #define IDECD_VERSION "4.61" |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/module.h> |
| 38 | #include <linux/types.h> |
| 39 | #include <linux/kernel.h> |
| 40 | #include <linux/delay.h> |
| 41 | #include <linux/timer.h> |
| 42 | #include <linux/slab.h> |
| 43 | #include <linux/interrupt.h> |
| 44 | #include <linux/errno.h> |
| 45 | #include <linux/cdrom.h> |
| 46 | #include <linux/ide.h> |
| 47 | #include <linux/completion.h> |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 48 | #include <linux/mutex.h> |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame^] | 49 | #include <linux/bcd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
| 51 | #include <scsi/scsi.h> /* For SCSI -> ATAPI command conversion */ |
| 52 | |
| 53 | #include <asm/irq.h> |
| 54 | #include <asm/io.h> |
| 55 | #include <asm/byteorder.h> |
| 56 | #include <asm/uaccess.h> |
| 57 | #include <asm/unaligned.h> |
| 58 | |
| 59 | #include "ide-cd.h" |
| 60 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 61 | static DEFINE_MUTEX(idecd_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
| 63 | #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref) |
| 64 | |
| 65 | #define ide_cd_g(disk) \ |
| 66 | container_of((disk)->private_data, struct cdrom_info, driver) |
| 67 | |
| 68 | static struct cdrom_info *ide_cd_get(struct gendisk *disk) |
| 69 | { |
| 70 | struct cdrom_info *cd = NULL; |
| 71 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 72 | mutex_lock(&idecd_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | cd = ide_cd_g(disk); |
| 74 | if (cd) |
| 75 | kref_get(&cd->kref); |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 76 | mutex_unlock(&idecd_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | return cd; |
| 78 | } |
| 79 | |
| 80 | static void ide_cd_release(struct kref *); |
| 81 | |
| 82 | static void ide_cd_put(struct cdrom_info *cd) |
| 83 | { |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 84 | mutex_lock(&idecd_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | kref_put(&cd->kref, ide_cd_release); |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 86 | mutex_unlock(&idecd_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | } |
| 88 | |
| 89 | /**************************************************************************** |
| 90 | * Generic packet command support and error handling routines. |
| 91 | */ |
| 92 | |
| 93 | /* Mark that we've seen a media change, and invalidate our internal |
| 94 | buffers. */ |
| 95 | static void cdrom_saw_media_change (ide_drive_t *drive) |
| 96 | { |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 97 | struct cdrom_info *cd = drive->driver_data; |
| 98 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 99 | cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED; |
| 100 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 101 | cd->nsectors_buffered = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | } |
| 103 | |
| 104 | static int cdrom_log_sense(ide_drive_t *drive, struct request *rq, |
| 105 | struct request_sense *sense) |
| 106 | { |
| 107 | int log = 0; |
| 108 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 109 | if (!sense || !rq || (rq->cmd_flags & REQ_QUIET)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | return 0; |
| 111 | |
| 112 | switch (sense->sense_key) { |
| 113 | case NO_SENSE: case RECOVERED_ERROR: |
| 114 | break; |
| 115 | case NOT_READY: |
| 116 | /* |
| 117 | * don't care about tray state messages for |
| 118 | * e.g. capacity commands or in-progress or |
| 119 | * becoming ready |
| 120 | */ |
| 121 | if (sense->asc == 0x3a || sense->asc == 0x04) |
| 122 | break; |
| 123 | log = 1; |
| 124 | break; |
| 125 | case ILLEGAL_REQUEST: |
| 126 | /* |
| 127 | * don't log START_STOP unit with LoEj set, since |
| 128 | * we cannot reliably check if drive can auto-close |
| 129 | */ |
| 130 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 131 | break; |
| 132 | log = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | break; |
| 134 | case UNIT_ATTENTION: |
| 135 | /* |
| 136 | * Make good and sure we've seen this potential media |
| 137 | * change. Some drives (i.e. Creative) fail to present |
| 138 | * the correct sense key in the error register. |
| 139 | */ |
| 140 | cdrom_saw_media_change(drive); |
| 141 | break; |
| 142 | default: |
| 143 | log = 1; |
| 144 | break; |
| 145 | } |
| 146 | return log; |
| 147 | } |
| 148 | |
| 149 | static |
| 150 | void cdrom_analyze_sense_data(ide_drive_t *drive, |
| 151 | struct request *failed_command, |
| 152 | struct request_sense *sense) |
| 153 | { |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 154 | unsigned long sector; |
| 155 | unsigned long bio_sectors; |
| 156 | unsigned long valid; |
| 157 | struct cdrom_info *info = drive->driver_data; |
| 158 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | if (!cdrom_log_sense(drive, failed_command, sense)) |
| 160 | return; |
| 161 | |
| 162 | /* |
| 163 | * If a read toc is executed for a CD-R or CD-RW medium where |
| 164 | * the first toc has not been recorded yet, it will fail with |
| 165 | * 05/24/00 (which is a confusing error) |
| 166 | */ |
| 167 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) |
| 168 | if (sense->sense_key == 0x05 && sense->asc == 0x24) |
| 169 | return; |
| 170 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 171 | if (sense->error_code == 0x70) { /* Current Error */ |
| 172 | switch(sense->sense_key) { |
| 173 | case MEDIUM_ERROR: |
| 174 | case VOLUME_OVERFLOW: |
| 175 | case ILLEGAL_REQUEST: |
| 176 | if (!sense->valid) |
| 177 | break; |
| 178 | if (failed_command == NULL || |
| 179 | !blk_fs_request(failed_command)) |
| 180 | break; |
| 181 | sector = (sense->information[0] << 24) | |
| 182 | (sense->information[1] << 16) | |
| 183 | (sense->information[2] << 8) | |
| 184 | (sense->information[3]); |
| 185 | |
| 186 | bio_sectors = bio_sectors(failed_command->bio); |
| 187 | if (bio_sectors < 4) |
| 188 | bio_sectors = 4; |
| 189 | if (drive->queue->hardsect_size == 2048) |
| 190 | sector <<= 2; /* Device sector size is 2K */ |
| 191 | sector &= ~(bio_sectors -1); |
| 192 | valid = (sector - failed_command->sector) << 9; |
| 193 | |
| 194 | if (valid < 0) |
| 195 | valid = 0; |
| 196 | if (sector < get_capacity(info->disk) && |
| 197 | drive->probed_capacity - sector < 4 * 75) { |
| 198 | set_capacity(info->disk, sector); |
| 199 | } |
| 200 | } |
| 201 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | #if VERBOSE_IDE_CD_ERRORS |
| 203 | { |
| 204 | int i; |
Matt Mackall | 70d1d47 | 2005-07-12 13:58:09 -0700 | [diff] [blame] | 205 | const char *s = "bad sense key!"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | char buf[80]; |
| 207 | |
| 208 | printk ("ATAPI device %s:\n", drive->name); |
| 209 | if (sense->error_code==0x70) |
| 210 | printk(" Error: "); |
| 211 | else if (sense->error_code==0x71) |
| 212 | printk(" Deferred Error: "); |
| 213 | else if (sense->error_code == 0x7f) |
| 214 | printk(" Vendor-specific Error: "); |
| 215 | else |
| 216 | printk(" Unknown Error Type: "); |
| 217 | |
Robert P. J. Day | 74c8f97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 218 | if (sense->sense_key < ARRAY_SIZE(sense_key_texts)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | s = sense_key_texts[sense->sense_key]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
| 221 | printk("%s -- (Sense key=0x%02x)\n", s, sense->sense_key); |
| 222 | |
| 223 | if (sense->asc == 0x40) { |
| 224 | sprintf(buf, "Diagnostic failure on component 0x%02x", |
| 225 | sense->ascq); |
| 226 | s = buf; |
| 227 | } else { |
Robert P. J. Day | 74c8f97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 228 | int lo = 0, mid, hi = ARRAY_SIZE(sense_data_texts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | unsigned long key = (sense->sense_key << 16); |
| 230 | key |= (sense->asc << 8); |
| 231 | if (!(sense->ascq >= 0x80 && sense->ascq <= 0xdd)) |
| 232 | key |= sense->ascq; |
| 233 | s = NULL; |
| 234 | |
| 235 | while (hi > lo) { |
| 236 | mid = (lo + hi) / 2; |
| 237 | if (sense_data_texts[mid].asc_ascq == key || |
| 238 | sense_data_texts[mid].asc_ascq == (0xff0000|key)) { |
| 239 | s = sense_data_texts[mid].text; |
| 240 | break; |
| 241 | } |
| 242 | else if (sense_data_texts[mid].asc_ascq > key) |
| 243 | hi = mid; |
| 244 | else |
| 245 | lo = mid+1; |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | if (s == NULL) { |
| 250 | if (sense->asc > 0x80) |
| 251 | s = "(vendor-specific error)"; |
| 252 | else |
| 253 | s = "(reserved error code)"; |
| 254 | } |
| 255 | |
| 256 | printk(KERN_ERR " %s -- (asc=0x%02x, ascq=0x%02x)\n", |
| 257 | s, sense->asc, sense->ascq); |
| 258 | |
| 259 | if (failed_command != NULL) { |
| 260 | |
Robert P. J. Day | 74c8f97 | 2007-07-09 23:17:57 +0200 | [diff] [blame] | 261 | int lo=0, mid, hi= ARRAY_SIZE(packet_command_texts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | s = NULL; |
| 263 | |
| 264 | while (hi > lo) { |
| 265 | mid = (lo + hi) / 2; |
| 266 | if (packet_command_texts[mid].packet_command == |
| 267 | failed_command->cmd[0]) { |
| 268 | s = packet_command_texts[mid].text; |
| 269 | break; |
| 270 | } |
| 271 | if (packet_command_texts[mid].packet_command > |
| 272 | failed_command->cmd[0]) |
| 273 | hi = mid; |
| 274 | else |
| 275 | lo = mid+1; |
| 276 | } |
| 277 | |
| 278 | printk (KERN_ERR " The failed \"%s\" packet command was: \n \"", s); |
| 279 | for (i=0; i<sizeof (failed_command->cmd); i++) |
| 280 | printk ("%02x ", failed_command->cmd[i]); |
| 281 | printk ("\"\n"); |
| 282 | } |
| 283 | |
| 284 | /* The SKSV bit specifies validity of the sense_key_specific |
| 285 | * in the next two commands. It is bit 7 of the first byte. |
| 286 | * In the case of NOT_READY, if SKSV is set the drive can |
| 287 | * give us nice ETA readings. |
| 288 | */ |
| 289 | if (sense->sense_key == NOT_READY && (sense->sks[0] & 0x80)) { |
| 290 | int progress = (sense->sks[1] << 8 | sense->sks[2]) * 100; |
| 291 | printk(KERN_ERR " Command is %02d%% complete\n", progress / 0xffff); |
| 292 | |
| 293 | } |
| 294 | |
| 295 | if (sense->sense_key == ILLEGAL_REQUEST && |
| 296 | (sense->sks[0] & 0x80) != 0) { |
| 297 | printk(KERN_ERR " Error in %s byte %d", |
| 298 | (sense->sks[0] & 0x40) != 0 ? |
| 299 | "command packet" : "command data", |
| 300 | (sense->sks[1] << 8) + sense->sks[2]); |
| 301 | |
| 302 | if ((sense->sks[0] & 0x40) != 0) |
| 303 | printk (" bit %d", sense->sks[0] & 0x07); |
| 304 | |
| 305 | printk ("\n"); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | #else /* not VERBOSE_IDE_CD_ERRORS */ |
| 310 | |
| 311 | /* Suppress printing unit attention and `in progress of becoming ready' |
| 312 | errors when we're not being verbose. */ |
| 313 | |
| 314 | if (sense->sense_key == UNIT_ATTENTION || |
| 315 | (sense->sense_key == NOT_READY && (sense->asc == 4 || |
| 316 | sense->asc == 0x3a))) |
| 317 | return; |
| 318 | |
| 319 | printk(KERN_ERR "%s: error code: 0x%02x sense_key: 0x%02x asc: 0x%02x ascq: 0x%02x\n", |
| 320 | drive->name, |
| 321 | sense->error_code, sense->sense_key, |
| 322 | sense->asc, sense->ascq); |
| 323 | #endif /* not VERBOSE_IDE_CD_ERRORS */ |
| 324 | } |
| 325 | |
| 326 | /* |
| 327 | * Initialize a ide-cd packet command request |
| 328 | */ |
| 329 | static void cdrom_prepare_request(ide_drive_t *drive, struct request *rq) |
| 330 | { |
| 331 | struct cdrom_info *cd = drive->driver_data; |
| 332 | |
| 333 | ide_init_drive_cmd(rq); |
Jens Axboe | cea2885 | 2006-10-12 15:08:45 +0200 | [diff] [blame] | 334 | rq->cmd_type = REQ_TYPE_ATA_PC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | rq->rq_disk = cd->disk; |
| 336 | } |
| 337 | |
| 338 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, |
| 339 | struct request *failed_command) |
| 340 | { |
| 341 | struct cdrom_info *info = drive->driver_data; |
| 342 | struct request *rq = &info->request_sense_request; |
| 343 | |
| 344 | if (sense == NULL) |
| 345 | sense = &info->sense_data; |
| 346 | |
| 347 | /* stuff the sense request in front of our current request */ |
| 348 | cdrom_prepare_request(drive, rq); |
| 349 | |
| 350 | rq->data = sense; |
| 351 | rq->cmd[0] = GPCMD_REQUEST_SENSE; |
| 352 | rq->cmd[4] = rq->data_len = 18; |
| 353 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 354 | rq->cmd_type = REQ_TYPE_SENSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | |
| 356 | /* NOTE! Save the failed command in "rq->buffer" */ |
| 357 | rq->buffer = (void *) failed_command; |
| 358 | |
| 359 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); |
| 360 | } |
| 361 | |
| 362 | static void cdrom_end_request (ide_drive_t *drive, int uptodate) |
| 363 | { |
| 364 | struct request *rq = HWGROUP(drive)->rq; |
| 365 | int nsectors = rq->hard_cur_sectors; |
| 366 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 367 | if (blk_sense_request(rq) && uptodate) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | /* |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 369 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
| 370 | * failed request |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | */ |
| 372 | struct request *failed = (struct request *) rq->buffer; |
| 373 | struct cdrom_info *info = drive->driver_data; |
| 374 | void *sense = &info->sense_data; |
| 375 | unsigned long flags; |
| 376 | |
| 377 | if (failed) { |
| 378 | if (failed->sense) { |
| 379 | sense = failed->sense; |
| 380 | failed->sense_len = rq->sense_len; |
| 381 | } |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 382 | cdrom_analyze_sense_data(drive, failed, sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | /* |
| 384 | * now end failed request |
| 385 | */ |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 386 | if (blk_fs_request(failed)) { |
| 387 | if (ide_end_dequeued_request(drive, failed, 0, |
| 388 | failed->hard_nr_sectors)) |
| 389 | BUG(); |
| 390 | } else { |
| 391 | spin_lock_irqsave(&ide_lock, flags); |
Kiyoshi Ueda | 5e36bb6 | 2008-01-28 10:34:20 +0100 | [diff] [blame] | 392 | if (__blk_end_request(failed, -EIO, |
| 393 | failed->data_len)) |
| 394 | BUG(); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 395 | spin_unlock_irqrestore(&ide_lock, flags); |
| 396 | } |
| 397 | } else |
| 398 | cdrom_analyze_sense_data(drive, NULL, sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | } |
| 400 | |
| 401 | if (!rq->current_nr_sectors && blk_fs_request(rq)) |
| 402 | uptodate = 1; |
| 403 | /* make sure it's fully ended */ |
| 404 | if (blk_pc_request(rq)) |
| 405 | nsectors = (rq->data_len + 511) >> 9; |
| 406 | if (!nsectors) |
| 407 | nsectors = 1; |
| 408 | |
| 409 | ide_end_request(drive, uptodate, nsectors); |
| 410 | } |
| 411 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 412 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat) |
| 413 | { |
| 414 | if (stat & 0x80) |
| 415 | return; |
| 416 | ide_dump_status(drive, msg, stat); |
| 417 | } |
| 418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | /* Returns 0 if the request should be continued. |
| 420 | Returns 1 if the request was ended. */ |
| 421 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) |
| 422 | { |
| 423 | struct request *rq = HWGROUP(drive)->rq; |
| 424 | int stat, err, sense_key; |
| 425 | |
| 426 | /* Check for errors. */ |
| 427 | stat = HWIF(drive)->INB(IDE_STATUS_REG); |
| 428 | if (stat_ret) |
| 429 | *stat_ret = stat; |
| 430 | |
| 431 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) |
| 432 | return 0; |
| 433 | |
| 434 | /* Get the IDE error register. */ |
| 435 | err = HWIF(drive)->INB(IDE_ERROR_REG); |
| 436 | sense_key = err >> 4; |
| 437 | |
| 438 | if (rq == NULL) { |
| 439 | printk("%s: missing rq in cdrom_decode_status\n", drive->name); |
| 440 | return 1; |
| 441 | } |
| 442 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 443 | if (blk_sense_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | /* We got an error trying to get sense info |
| 445 | from the drive (probably while trying |
| 446 | to recover from a former error). Just give up. */ |
| 447 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 448 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | cdrom_end_request(drive, 0); |
| 450 | ide_error(drive, "request sense failure", stat); |
| 451 | return 1; |
| 452 | |
Jens Axboe | 8770c01 | 2006-10-12 17:24:52 +0200 | [diff] [blame] | 453 | } else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | /* All other functions, except for READ. */ |
| 455 | unsigned long flags; |
| 456 | |
| 457 | /* |
| 458 | * if we have an error, pass back CHECK_CONDITION as the |
| 459 | * scsi status byte |
| 460 | */ |
Jens Axboe | b715673 | 2006-11-13 18:05:02 +0100 | [diff] [blame] | 461 | if (blk_pc_request(rq) && !rq->errors) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | rq->errors = SAM_STAT_CHECK_CONDITION; |
| 463 | |
| 464 | /* Check for tray open. */ |
| 465 | if (sense_key == NOT_READY) { |
| 466 | cdrom_saw_media_change (drive); |
| 467 | } else if (sense_key == UNIT_ATTENTION) { |
| 468 | /* Check for media change. */ |
| 469 | cdrom_saw_media_change (drive); |
| 470 | /*printk("%s: media changed\n",drive->name);*/ |
| 471 | return 0; |
Stuart Hayes | 76ca1af | 2007-04-10 22:38:43 +0200 | [diff] [blame] | 472 | } else if ((sense_key == ILLEGAL_REQUEST) && |
| 473 | (rq->cmd[0] == GPCMD_START_STOP_UNIT)) { |
| 474 | /* |
| 475 | * Don't print error message for this condition-- |
| 476 | * SFF8090i indicates that 5/24/00 is the correct |
| 477 | * response to a request to close the tray if the |
| 478 | * drive doesn't have that capability. |
| 479 | * cdrom_log_sense() knows this! |
| 480 | */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 481 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | /* Otherwise, print an error. */ |
| 483 | ide_dump_status(drive, "packet command error", stat); |
| 484 | } |
| 485 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 486 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | |
| 488 | /* |
| 489 | * instead of playing games with moving completions around, |
| 490 | * remove failed request completely and end it when the |
| 491 | * request sense has completed |
| 492 | */ |
| 493 | if (stat & ERR_STAT) { |
| 494 | spin_lock_irqsave(&ide_lock, flags); |
| 495 | blkdev_dequeue_request(rq); |
| 496 | HWGROUP(drive)->rq = NULL; |
| 497 | spin_unlock_irqrestore(&ide_lock, flags); |
| 498 | |
| 499 | cdrom_queue_request_sense(drive, rq->sense, rq); |
| 500 | } else |
| 501 | cdrom_end_request(drive, 0); |
| 502 | |
| 503 | } else if (blk_fs_request(rq)) { |
| 504 | int do_end_request = 0; |
| 505 | |
| 506 | /* Handle errors from READ and WRITE requests. */ |
| 507 | |
| 508 | if (blk_noretry_request(rq)) |
| 509 | do_end_request = 1; |
| 510 | |
| 511 | if (sense_key == NOT_READY) { |
| 512 | /* Tray open. */ |
| 513 | if (rq_data_dir(rq) == READ) { |
| 514 | cdrom_saw_media_change (drive); |
| 515 | |
| 516 | /* Fail the request. */ |
| 517 | printk ("%s: tray open\n", drive->name); |
| 518 | do_end_request = 1; |
| 519 | } else { |
| 520 | struct cdrom_info *info = drive->driver_data; |
| 521 | |
| 522 | /* allow the drive 5 seconds to recover, some |
| 523 | * devices will return this error while flushing |
| 524 | * data from cache */ |
| 525 | if (!rq->errors) |
| 526 | info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; |
| 527 | rq->errors = 1; |
| 528 | if (time_after(jiffies, info->write_timeout)) |
| 529 | do_end_request = 1; |
| 530 | else { |
| 531 | unsigned long flags; |
| 532 | |
| 533 | /* |
| 534 | * take a breather relying on the |
| 535 | * unplug timer to kick us again |
| 536 | */ |
| 537 | spin_lock_irqsave(&ide_lock, flags); |
| 538 | blk_plug_device(drive->queue); |
| 539 | spin_unlock_irqrestore(&ide_lock,flags); |
| 540 | return 1; |
| 541 | } |
| 542 | } |
| 543 | } else if (sense_key == UNIT_ATTENTION) { |
| 544 | /* Media change. */ |
| 545 | cdrom_saw_media_change (drive); |
| 546 | |
| 547 | /* Arrange to retry the request. |
| 548 | But be sure to give up if we've retried |
| 549 | too many times. */ |
| 550 | if (++rq->errors > ERROR_MAX) |
| 551 | do_end_request = 1; |
| 552 | } else if (sense_key == ILLEGAL_REQUEST || |
| 553 | sense_key == DATA_PROTECT) { |
| 554 | /* No point in retrying after an illegal |
| 555 | request or data protect error.*/ |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 556 | ide_dump_status_no_sense (drive, "command error", stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | do_end_request = 1; |
| 558 | } else if (sense_key == MEDIUM_ERROR) { |
| 559 | /* No point in re-trying a zillion times on a bad |
| 560 | * sector... If we got here the error is not correctable */ |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 561 | ide_dump_status_no_sense (drive, "media error (bad sector)", stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | do_end_request = 1; |
| 563 | } else if (sense_key == BLANK_CHECK) { |
| 564 | /* Disk appears blank ?? */ |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 565 | ide_dump_status_no_sense (drive, "media error (blank)", stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | do_end_request = 1; |
| 567 | } else if ((err & ~ABRT_ERR) != 0) { |
| 568 | /* Go to the default handler |
| 569 | for other errors. */ |
| 570 | ide_error(drive, "cdrom_decode_status", stat); |
| 571 | return 1; |
| 572 | } else if ((++rq->errors > ERROR_MAX)) { |
| 573 | /* We've racked up too many retries. Abort. */ |
| 574 | do_end_request = 1; |
| 575 | } |
| 576 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 577 | /* End a request through request sense analysis when we have |
| 578 | sense data. We need this in order to perform end of media |
| 579 | processing */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 581 | if (do_end_request) { |
| 582 | if (stat & ERR_STAT) { |
| 583 | unsigned long flags; |
| 584 | spin_lock_irqsave(&ide_lock, flags); |
| 585 | blkdev_dequeue_request(rq); |
| 586 | HWGROUP(drive)->rq = NULL; |
| 587 | spin_unlock_irqrestore(&ide_lock, flags); |
| 588 | |
| 589 | cdrom_queue_request_sense(drive, rq->sense, rq); |
| 590 | } else |
| 591 | cdrom_end_request(drive, 0); |
| 592 | } else { |
| 593 | /* If we got a CHECK_CONDITION status, |
| 594 | queue a request sense command. */ |
| 595 | if (stat & ERR_STAT) |
| 596 | cdrom_queue_request_sense(drive, NULL, NULL); |
| 597 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | } else { |
| 599 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); |
| 600 | cdrom_end_request(drive, 0); |
| 601 | } |
| 602 | |
| 603 | /* Retry, or handle the next request. */ |
| 604 | return 1; |
| 605 | } |
| 606 | |
| 607 | static int cdrom_timer_expiry(ide_drive_t *drive) |
| 608 | { |
| 609 | struct request *rq = HWGROUP(drive)->rq; |
| 610 | unsigned long wait = 0; |
| 611 | |
| 612 | /* |
| 613 | * Some commands are *slow* and normally take a long time to |
| 614 | * complete. Usually we can use the ATAPI "disconnect" to bypass |
| 615 | * this, but not all commands/drives support that. Let |
| 616 | * ide_timer_expiry keep polling us for these. |
| 617 | */ |
| 618 | switch (rq->cmd[0]) { |
| 619 | case GPCMD_BLANK: |
| 620 | case GPCMD_FORMAT_UNIT: |
| 621 | case GPCMD_RESERVE_RZONE_TRACK: |
| 622 | case GPCMD_CLOSE_TRACK: |
| 623 | case GPCMD_FLUSH_CACHE: |
| 624 | wait = ATAPI_WAIT_PC; |
| 625 | break; |
| 626 | default: |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 627 | if (!(rq->cmd_flags & REQ_QUIET)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]); |
| 629 | wait = 0; |
| 630 | break; |
| 631 | } |
| 632 | return wait; |
| 633 | } |
| 634 | |
| 635 | /* Set up the device registers for transferring a packet command on DEV, |
| 636 | expecting to later transfer XFERLEN bytes. HANDLER is the routine |
| 637 | which actually transfers the command to the drive. If this is a |
| 638 | drq_interrupt device, this routine will arrange for HANDLER to be |
| 639 | called when the interrupt from the drive arrives. Otherwise, HANDLER |
| 640 | will be called immediately after the drive is prepared for the transfer. */ |
| 641 | |
| 642 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, |
| 643 | int xferlen, |
| 644 | ide_handler_t *handler) |
| 645 | { |
| 646 | ide_startstop_t startstop; |
| 647 | struct cdrom_info *info = drive->driver_data; |
| 648 | ide_hwif_t *hwif = drive->hwif; |
| 649 | |
| 650 | /* Wait for the controller to be idle. */ |
| 651 | if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) |
| 652 | return startstop; |
| 653 | |
Bartlomiej Zolnierkiewicz | 3a6a354 | 2008-01-25 22:17:13 +0100 | [diff] [blame] | 654 | /* FIXME: for Virtual DMA we must check harder */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | if (info->dma) |
| 656 | info->dma = !hwif->dma_setup(drive); |
| 657 | |
| 658 | /* Set up the controller registers. */ |
Bartlomiej Zolnierkiewicz | 2fc5738 | 2008-01-25 22:17:13 +0100 | [diff] [blame] | 659 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL | |
| 660 | IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 661 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 662 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
Albert Lee | f0dd871 | 2007-02-17 02:40:21 +0100 | [diff] [blame] | 663 | /* waiting for CDB interrupt, not DMA yet. */ |
| 664 | if (info->dma) |
| 665 | drive->waiting_for_dma = 0; |
| 666 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | /* packet command */ |
| 668 | ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); |
| 669 | return ide_started; |
| 670 | } else { |
| 671 | unsigned long flags; |
| 672 | |
| 673 | /* packet command */ |
| 674 | spin_lock_irqsave(&ide_lock, flags); |
| 675 | hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG); |
| 676 | ndelay(400); |
| 677 | spin_unlock_irqrestore(&ide_lock, flags); |
| 678 | |
| 679 | return (*handler) (drive); |
| 680 | } |
| 681 | } |
| 682 | |
| 683 | /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. |
| 684 | The device registers must have already been prepared |
| 685 | by cdrom_start_packet_command. |
| 686 | HANDLER is the interrupt handler to call when the command completes |
| 687 | or there's data ready. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | #define ATAPI_MIN_CDB_BYTES 12 |
| 689 | static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive, |
| 690 | struct request *rq, |
| 691 | ide_handler_t *handler) |
| 692 | { |
| 693 | ide_hwif_t *hwif = drive->hwif; |
| 694 | int cmd_len; |
| 695 | struct cdrom_info *info = drive->driver_data; |
| 696 | ide_startstop_t startstop; |
| 697 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 698 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | /* Here we should have been called after receiving an interrupt |
| 700 | from the device. DRQ should how be set. */ |
| 701 | |
| 702 | /* Check for errors. */ |
| 703 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) |
| 704 | return ide_stopped; |
Albert Lee | f0dd871 | 2007-02-17 02:40:21 +0100 | [diff] [blame] | 705 | |
| 706 | /* Ok, next interrupt will be DMA interrupt. */ |
| 707 | if (info->dma) |
| 708 | drive->waiting_for_dma = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | } else { |
| 710 | /* Otherwise, we must wait for DRQ to get set. */ |
| 711 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
| 712 | BUSY_STAT, WAIT_READY)) |
| 713 | return startstop; |
| 714 | } |
| 715 | |
| 716 | /* Arm the interrupt handler. */ |
| 717 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); |
| 718 | |
| 719 | /* ATAPI commands get padded out to 12 bytes minimum */ |
| 720 | cmd_len = COMMAND_SIZE(rq->cmd[0]); |
| 721 | if (cmd_len < ATAPI_MIN_CDB_BYTES) |
| 722 | cmd_len = ATAPI_MIN_CDB_BYTES; |
| 723 | |
| 724 | /* Send the command to the device. */ |
| 725 | HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len); |
| 726 | |
| 727 | /* Start the DMA if need be */ |
| 728 | if (info->dma) |
| 729 | hwif->dma_start(drive); |
| 730 | |
| 731 | return ide_started; |
| 732 | } |
| 733 | |
| 734 | /**************************************************************************** |
| 735 | * Block read functions. |
| 736 | */ |
| 737 | |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 738 | typedef void (xfer_func_t)(ide_drive_t *, void *, u32); |
| 739 | |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 740 | static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len) |
| 741 | { |
| 742 | while (len > 0) { |
| 743 | int dum = 0; |
| 744 | xf(drive, &dum, sizeof(dum)); |
| 745 | len -= sizeof(dum); |
| 746 | } |
| 747 | } |
| 748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | /* |
| 750 | * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector |
| 751 | * buffer. Once the first sector is added, any subsequent sectors are |
| 752 | * assumed to be continuous (until the buffer is cleared). For the first |
| 753 | * sector added, SECTOR is its sector number. (SECTOR is then ignored until |
| 754 | * the buffer is cleared.) |
| 755 | */ |
| 756 | static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector, |
| 757 | int sectors_to_transfer) |
| 758 | { |
| 759 | struct cdrom_info *info = drive->driver_data; |
| 760 | |
| 761 | /* Number of sectors to read into the buffer. */ |
| 762 | int sectors_to_buffer = min_t(int, sectors_to_transfer, |
| 763 | (SECTOR_BUFFER_SIZE >> SECTOR_BITS) - |
| 764 | info->nsectors_buffered); |
| 765 | |
| 766 | char *dest; |
| 767 | |
| 768 | /* If we couldn't get a buffer, don't try to buffer anything... */ |
| 769 | if (info->buffer == NULL) |
| 770 | sectors_to_buffer = 0; |
| 771 | |
| 772 | /* If this is the first sector in the buffer, remember its number. */ |
| 773 | if (info->nsectors_buffered == 0) |
| 774 | info->sector_buffered = sector; |
| 775 | |
| 776 | /* Read the data into the buffer. */ |
| 777 | dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE; |
| 778 | while (sectors_to_buffer > 0) { |
| 779 | HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE); |
| 780 | --sectors_to_buffer; |
| 781 | --sectors_to_transfer; |
| 782 | ++info->nsectors_buffered; |
| 783 | dest += SECTOR_SIZE; |
| 784 | } |
| 785 | |
| 786 | /* Throw away any remaining data. */ |
| 787 | while (sectors_to_transfer > 0) { |
| 788 | static char dum[SECTOR_SIZE]; |
| 789 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); |
| 790 | --sectors_to_transfer; |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | /* |
| 795 | * Check the contents of the interrupt reason register from the cdrom |
| 796 | * and attempt to recover if there are problems. Returns 0 if everything's |
| 797 | * ok; nonzero if the request has been terminated. |
| 798 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 799 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 800 | int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason) |
| 801 | { |
| 802 | if (ireason == 2) |
| 803 | return 0; |
| 804 | else if (ireason == 0) { |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 805 | ide_hwif_t *hwif = drive->hwif; |
| 806 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | /* Whoops... The drive is expecting to receive data from us! */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 808 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
| 809 | drive->name, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | |
| 811 | /* Throw some data at the drive so it doesn't hang |
| 812 | and quit this request. */ |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 813 | ide_cd_pad_transfer(drive, hwif->atapi_output_bytes, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | } else if (ireason == 1) { |
| 815 | /* Some drives (ASUS) seem to tell us that status |
| 816 | * info is available. just get it and ignore. |
| 817 | */ |
| 818 | (void) HWIF(drive)->INB(IDE_STATUS_REG); |
| 819 | return 0; |
| 820 | } else { |
| 821 | /* Drive wants a command packet, or invalid ireason... */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 822 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
| 823 | drive->name, __FUNCTION__, ireason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | } |
| 825 | |
| 826 | cdrom_end_request(drive, 0); |
| 827 | return -1; |
| 828 | } |
| 829 | |
| 830 | /* |
| 831 | * Interrupt routine. Called when a read request has completed. |
| 832 | */ |
| 833 | static ide_startstop_t cdrom_read_intr (ide_drive_t *drive) |
| 834 | { |
| 835 | int stat; |
| 836 | int ireason, len, sectors_to_transfer, nskip; |
| 837 | struct cdrom_info *info = drive->driver_data; |
| 838 | u8 lowcyl = 0, highcyl = 0; |
| 839 | int dma = info->dma, dma_error = 0; |
| 840 | |
| 841 | struct request *rq = HWGROUP(drive)->rq; |
| 842 | |
| 843 | /* |
| 844 | * handle dma case |
| 845 | */ |
| 846 | if (dma) { |
| 847 | info->dma = 0; |
Bartlomiej Zolnierkiewicz | 52ef2ed | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 848 | dma_error = HWIF(drive)->ide_dma_end(drive); |
| 849 | if (dma_error) { |
| 850 | printk(KERN_ERR "%s: DMA read error\n", drive->name); |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 851 | ide_dma_off(drive); |
Bartlomiej Zolnierkiewicz | 52ef2ed | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 852 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | } |
| 854 | |
| 855 | if (cdrom_decode_status(drive, 0, &stat)) |
| 856 | return ide_stopped; |
| 857 | |
| 858 | if (dma) { |
| 859 | if (!dma_error) { |
| 860 | ide_end_request(drive, 1, rq->nr_sectors); |
| 861 | return ide_stopped; |
| 862 | } else |
| 863 | return ide_error(drive, "dma error", stat); |
| 864 | } |
| 865 | |
| 866 | /* Read the interrupt reason and the transfer length. */ |
| 867 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
| 868 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 869 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 870 | |
| 871 | len = lowcyl + (256 * highcyl); |
| 872 | |
| 873 | /* If DRQ is clear, the command has completed. */ |
| 874 | if ((stat & DRQ_STAT) == 0) { |
| 875 | /* If we're not done filling the current buffer, complain. |
| 876 | Otherwise, complete the command normally. */ |
| 877 | if (rq->current_nr_sectors > 0) { |
| 878 | printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n", |
| 879 | drive->name, rq->current_nr_sectors); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 880 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | cdrom_end_request(drive, 0); |
| 882 | } else |
| 883 | cdrom_end_request(drive, 1); |
| 884 | return ide_stopped; |
| 885 | } |
| 886 | |
| 887 | /* Check that the drive is expecting to do the same thing we are. */ |
| 888 | if (cdrom_read_check_ireason (drive, len, ireason)) |
| 889 | return ide_stopped; |
| 890 | |
| 891 | /* Assume that the drive will always provide data in multiples |
| 892 | of at least SECTOR_SIZE, as it gets hairy to keep track |
| 893 | of the transfers otherwise. */ |
| 894 | if ((len % SECTOR_SIZE) != 0) { |
| 895 | printk (KERN_ERR "%s: cdrom_read_intr: Bad transfer size %d\n", |
| 896 | drive->name, len); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 897 | if (info->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | printk (KERN_ERR " This drive is not supported by this version of the driver\n"); |
| 899 | else { |
| 900 | printk (KERN_ERR " Trying to limit transfer sizes\n"); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 901 | info->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | } |
| 903 | cdrom_end_request(drive, 0); |
| 904 | return ide_stopped; |
| 905 | } |
| 906 | |
| 907 | /* The number of sectors we need to read from the drive. */ |
| 908 | sectors_to_transfer = len / SECTOR_SIZE; |
| 909 | |
| 910 | /* First, figure out if we need to bit-bucket |
| 911 | any of the leading sectors. */ |
| 912 | nskip = min_t(int, rq->current_nr_sectors - bio_cur_sectors(rq->bio), sectors_to_transfer); |
| 913 | |
| 914 | while (nskip > 0) { |
| 915 | /* We need to throw away a sector. */ |
| 916 | static char dum[SECTOR_SIZE]; |
| 917 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); |
| 918 | |
| 919 | --rq->current_nr_sectors; |
| 920 | --nskip; |
| 921 | --sectors_to_transfer; |
| 922 | } |
| 923 | |
| 924 | /* Now loop while we still have data to read from the drive. */ |
| 925 | while (sectors_to_transfer > 0) { |
| 926 | int this_transfer; |
| 927 | |
| 928 | /* If we've filled the present buffer but there's another |
| 929 | chained buffer after it, move on. */ |
| 930 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) |
| 931 | cdrom_end_request(drive, 1); |
| 932 | |
| 933 | /* If the buffers are full, cache the rest of the data in our |
| 934 | internal buffer. */ |
| 935 | if (rq->current_nr_sectors == 0) { |
| 936 | cdrom_buffer_sectors(drive, rq->sector, sectors_to_transfer); |
| 937 | sectors_to_transfer = 0; |
| 938 | } else { |
| 939 | /* Transfer data to the buffers. |
| 940 | Figure out how many sectors we can transfer |
| 941 | to the current buffer. */ |
| 942 | this_transfer = min_t(int, sectors_to_transfer, |
| 943 | rq->current_nr_sectors); |
| 944 | |
| 945 | /* Read this_transfer sectors |
| 946 | into the current buffer. */ |
| 947 | while (this_transfer > 0) { |
| 948 | HWIF(drive)->atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE); |
| 949 | rq->buffer += SECTOR_SIZE; |
| 950 | --rq->nr_sectors; |
| 951 | --rq->current_nr_sectors; |
| 952 | ++rq->sector; |
| 953 | --this_transfer; |
| 954 | --sectors_to_transfer; |
| 955 | } |
| 956 | } |
| 957 | } |
| 958 | |
| 959 | /* Done moving data! Wait for another interrupt. */ |
| 960 | ide_set_handler(drive, &cdrom_read_intr, ATAPI_WAIT_PC, NULL); |
| 961 | return ide_started; |
| 962 | } |
| 963 | |
| 964 | /* |
| 965 | * Try to satisfy some of the current read request from our cached data. |
| 966 | * Returns nonzero if the request has been completed, zero otherwise. |
| 967 | */ |
| 968 | static int cdrom_read_from_buffer (ide_drive_t *drive) |
| 969 | { |
| 970 | struct cdrom_info *info = drive->driver_data; |
| 971 | struct request *rq = HWGROUP(drive)->rq; |
| 972 | unsigned short sectors_per_frame; |
| 973 | |
| 974 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 975 | |
| 976 | /* Can't do anything if there's no buffer. */ |
| 977 | if (info->buffer == NULL) return 0; |
| 978 | |
| 979 | /* Loop while this request needs data and the next block is present |
| 980 | in our cache. */ |
| 981 | while (rq->nr_sectors > 0 && |
| 982 | rq->sector >= info->sector_buffered && |
| 983 | rq->sector < info->sector_buffered + info->nsectors_buffered) { |
| 984 | if (rq->current_nr_sectors == 0) |
| 985 | cdrom_end_request(drive, 1); |
| 986 | |
| 987 | memcpy (rq->buffer, |
| 988 | info->buffer + |
| 989 | (rq->sector - info->sector_buffered) * SECTOR_SIZE, |
| 990 | SECTOR_SIZE); |
| 991 | rq->buffer += SECTOR_SIZE; |
| 992 | --rq->current_nr_sectors; |
| 993 | --rq->nr_sectors; |
| 994 | ++rq->sector; |
| 995 | } |
| 996 | |
| 997 | /* If we've satisfied the current request, |
| 998 | terminate it successfully. */ |
| 999 | if (rq->nr_sectors == 0) { |
| 1000 | cdrom_end_request(drive, 1); |
| 1001 | return -1; |
| 1002 | } |
| 1003 | |
| 1004 | /* Move on to the next buffer if needed. */ |
| 1005 | if (rq->current_nr_sectors == 0) |
| 1006 | cdrom_end_request(drive, 1); |
| 1007 | |
| 1008 | /* If this condition does not hold, then the kluge i use to |
| 1009 | represent the number of sectors to skip at the start of a transfer |
| 1010 | will fail. I think that this will never happen, but let's be |
| 1011 | paranoid and check. */ |
| 1012 | if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) && |
| 1013 | (rq->sector & (sectors_per_frame - 1))) { |
| 1014 | printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n", |
| 1015 | drive->name, (long)rq->sector); |
| 1016 | cdrom_end_request(drive, 0); |
| 1017 | return -1; |
| 1018 | } |
| 1019 | |
| 1020 | return 0; |
| 1021 | } |
| 1022 | |
| 1023 | /* |
| 1024 | * Routine to send a read packet command to the drive. |
| 1025 | * This is usually called directly from cdrom_start_read. |
| 1026 | * However, for drq_interrupt devices, it is called from an interrupt |
| 1027 | * when the drive is ready to accept the command. |
| 1028 | */ |
| 1029 | static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive) |
| 1030 | { |
| 1031 | struct request *rq = HWGROUP(drive)->rq; |
| 1032 | unsigned short sectors_per_frame; |
| 1033 | int nskip; |
| 1034 | |
| 1035 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1036 | |
| 1037 | /* If the requested sector doesn't start on a cdrom block boundary, |
| 1038 | we must adjust the start of the transfer so that it does, |
| 1039 | and remember to skip the first few sectors. |
| 1040 | If the CURRENT_NR_SECTORS field is larger than the size |
| 1041 | of the buffer, it will mean that we're to skip a number |
| 1042 | of sectors equal to the amount by which CURRENT_NR_SECTORS |
| 1043 | is larger than the buffer size. */ |
| 1044 | nskip = rq->sector & (sectors_per_frame - 1); |
| 1045 | if (nskip > 0) { |
| 1046 | /* Sanity check... */ |
| 1047 | if (rq->current_nr_sectors != bio_cur_sectors(rq->bio) && |
| 1048 | (rq->sector & (sectors_per_frame - 1))) { |
| 1049 | printk(KERN_ERR "%s: cdrom_start_read_continuation: buffer botch (%u)\n", |
| 1050 | drive->name, rq->current_nr_sectors); |
| 1051 | cdrom_end_request(drive, 0); |
| 1052 | return ide_stopped; |
| 1053 | } |
| 1054 | rq->current_nr_sectors += nskip; |
| 1055 | } |
| 1056 | |
| 1057 | /* Set up the command */ |
| 1058 | rq->timeout = ATAPI_WAIT_PC; |
| 1059 | |
| 1060 | /* Send the command to the drive and return. */ |
| 1061 | return cdrom_transfer_packet_command(drive, rq, &cdrom_read_intr); |
| 1062 | } |
| 1063 | |
| 1064 | |
| 1065 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ |
| 1066 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ |
| 1067 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ |
| 1068 | |
| 1069 | static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive) |
| 1070 | { |
| 1071 | struct cdrom_info *info = drive->driver_data; |
| 1072 | int stat; |
| 1073 | static int retry = 10; |
| 1074 | |
| 1075 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1076 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1077 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1078 | info->cd_flags |= IDE_CD_FLAG_SEEKING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | |
| 1080 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { |
| 1081 | if (--retry == 0) { |
| 1082 | /* |
| 1083 | * this condition is far too common, to bother |
| 1084 | * users about it |
| 1085 | */ |
| 1086 | /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ |
| 1087 | drive->dsc_overlap = 0; |
| 1088 | } |
| 1089 | } |
| 1090 | return ide_stopped; |
| 1091 | } |
| 1092 | |
| 1093 | static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive) |
| 1094 | { |
| 1095 | struct request *rq = HWGROUP(drive)->rq; |
| 1096 | sector_t frame = rq->sector; |
| 1097 | |
| 1098 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); |
| 1099 | |
| 1100 | memset(rq->cmd, 0, sizeof(rq->cmd)); |
| 1101 | rq->cmd[0] = GPCMD_SEEK; |
| 1102 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); |
| 1103 | |
| 1104 | rq->timeout = ATAPI_WAIT_PC; |
| 1105 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); |
| 1106 | } |
| 1107 | |
| 1108 | static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block) |
| 1109 | { |
| 1110 | struct cdrom_info *info = drive->driver_data; |
| 1111 | |
| 1112 | info->dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | info->start_seek = jiffies; |
| 1114 | return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); |
| 1115 | } |
| 1116 | |
| 1117 | /* Fix up a possibly partially-processed request so that we can |
| 1118 | start it over entirely, or even put it back on the request queue. */ |
| 1119 | static void restore_request (struct request *rq) |
| 1120 | { |
| 1121 | if (rq->buffer != bio_data(rq->bio)) { |
| 1122 | sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; |
| 1123 | |
| 1124 | rq->buffer = bio_data(rq->bio); |
| 1125 | rq->nr_sectors += n; |
| 1126 | rq->sector -= n; |
| 1127 | } |
| 1128 | rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); |
| 1129 | rq->hard_nr_sectors = rq->nr_sectors; |
| 1130 | rq->hard_sector = rq->sector; |
| 1131 | rq->q->prep_rq_fn(rq->q, rq); |
| 1132 | } |
| 1133 | |
| 1134 | /* |
| 1135 | * Start a read request from the CD-ROM. |
| 1136 | */ |
| 1137 | static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block) |
| 1138 | { |
| 1139 | struct cdrom_info *info = drive->driver_data; |
| 1140 | struct request *rq = HWGROUP(drive)->rq; |
| 1141 | unsigned short sectors_per_frame; |
| 1142 | |
| 1143 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1144 | |
| 1145 | /* We may be retrying this request after an error. Fix up |
| 1146 | any weirdness which might be present in the request packet. */ |
| 1147 | restore_request(rq); |
| 1148 | |
| 1149 | /* Satisfy whatever we can of this request from our cached sector. */ |
| 1150 | if (cdrom_read_from_buffer(drive)) |
| 1151 | return ide_stopped; |
| 1152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | /* Clear the local sector buffer. */ |
| 1154 | info->nsectors_buffered = 0; |
| 1155 | |
| 1156 | /* use dma, if possible. */ |
| 1157 | info->dma = drive->using_dma; |
| 1158 | if ((rq->sector & (sectors_per_frame - 1)) || |
| 1159 | (rq->nr_sectors & (sectors_per_frame - 1))) |
| 1160 | info->dma = 0; |
| 1161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1162 | /* Start sending the read request to the drive. */ |
| 1163 | return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation); |
| 1164 | } |
| 1165 | |
| 1166 | /**************************************************************************** |
| 1167 | * Execute all other packet commands. |
| 1168 | */ |
| 1169 | |
| 1170 | /* Interrupt routine for packet command completion. */ |
| 1171 | static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive) |
| 1172 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | struct request *rq = HWGROUP(drive)->rq; |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1174 | xfer_func_t *xferfunc = NULL; |
| 1175 | int stat, ireason, len, thislen, write; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | u8 lowcyl = 0, highcyl = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | |
| 1178 | /* Check for errors. */ |
| 1179 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1180 | return ide_stopped; |
| 1181 | |
| 1182 | /* Read the interrupt reason and the transfer length. */ |
Bartlomiej Zolnierkiewicz | 8606ab0 | 2007-12-24 15:23:44 +0100 | [diff] [blame] | 1183 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1185 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1186 | |
| 1187 | len = lowcyl + (256 * highcyl); |
| 1188 | |
| 1189 | /* If DRQ is clear, the command has completed. |
| 1190 | Complain if we still have data left to transfer. */ |
| 1191 | if ((stat & DRQ_STAT) == 0) { |
| 1192 | /* Some of the trailing request sense fields are optional, and |
| 1193 | some drives don't send them. Sigh. */ |
| 1194 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && |
| 1195 | rq->data_len > 0 && |
| 1196 | rq->data_len <= 5) { |
| 1197 | while (rq->data_len > 0) { |
| 1198 | *(unsigned char *)rq->data++ = 0; |
| 1199 | --rq->data_len; |
| 1200 | } |
| 1201 | } |
| 1202 | |
| 1203 | if (rq->data_len == 0) |
| 1204 | cdrom_end_request(drive, 1); |
| 1205 | else { |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1206 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1207 | cdrom_end_request(drive, 0); |
| 1208 | } |
| 1209 | return ide_stopped; |
| 1210 | } |
| 1211 | |
| 1212 | /* Figure out how much data to transfer. */ |
| 1213 | thislen = rq->data_len; |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1214 | if (thislen > len) |
| 1215 | thislen = len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | |
Bartlomiej Zolnierkiewicz | 8606ab0 | 2007-12-24 15:23:44 +0100 | [diff] [blame] | 1217 | if (ireason == 0) { |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1218 | write = 1; |
| 1219 | xferfunc = HWIF(drive)->atapi_output_bytes; |
| 1220 | } else if (ireason == 2) { |
| 1221 | write = 0; |
| 1222 | xferfunc = HWIF(drive)->atapi_input_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | } |
| 1224 | |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1225 | if (xferfunc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1226 | if (!rq->data) { |
Bartlomiej Zolnierkiewicz | f1071e6 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1227 | printk(KERN_ERR "%s: confused, missing data\n", |
| 1228 | drive->name); |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1229 | blk_dump_rq_flags(rq, write ? "cdrom_pc_intr, write" |
| 1230 | : "cdrom_pc_intr, read"); |
Bartlomiej Zolnierkiewicz | f1071e6 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1231 | goto pad; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | } |
| 1233 | /* Transfer the data. */ |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1234 | xferfunc(drive, rq->data, thislen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | /* Keep count of how much data we've moved. */ |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1237 | len -= thislen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | rq->data += thislen; |
| 1239 | rq->data_len -= thislen; |
| 1240 | |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1241 | if (write && blk_sense_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1242 | rq->sense_len += thislen; |
| 1243 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1244 | printk (KERN_ERR "%s: cdrom_pc_intr: The drive " |
Rachita Kothiyal | 1ad5544 | 2006-06-23 02:02:56 -0700 | [diff] [blame] | 1245 | "appears confused (ireason = 0x%02x). " |
| 1246 | "Trying to recover by ending request.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | drive->name, ireason); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1248 | rq->cmd_flags |= REQ_FAILED; |
Rachita Kothiyal | 1ad5544 | 2006-06-23 02:02:56 -0700 | [diff] [blame] | 1249 | cdrom_end_request(drive, 0); |
| 1250 | return ide_stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | } |
Bartlomiej Zolnierkiewicz | f1071e6 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1252 | pad: |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1253 | /* |
| 1254 | * If we haven't moved enough data to satisfy the drive, |
| 1255 | * add some padding. |
| 1256 | */ |
| 1257 | if (len > 0) |
| 1258 | ide_cd_pad_transfer(drive, xferfunc, len); |
| 1259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | /* Now we wait for another interrupt. */ |
| 1261 | ide_set_handler(drive, &cdrom_pc_intr, ATAPI_WAIT_PC, cdrom_timer_expiry); |
| 1262 | return ide_started; |
| 1263 | } |
| 1264 | |
| 1265 | static ide_startstop_t cdrom_do_pc_continuation (ide_drive_t *drive) |
| 1266 | { |
| 1267 | struct request *rq = HWGROUP(drive)->rq; |
| 1268 | |
| 1269 | if (!rq->timeout) |
| 1270 | rq->timeout = ATAPI_WAIT_PC; |
| 1271 | |
| 1272 | /* Send the command to the drive and return. */ |
| 1273 | return cdrom_transfer_packet_command(drive, rq, &cdrom_pc_intr); |
| 1274 | } |
| 1275 | |
| 1276 | |
| 1277 | static ide_startstop_t cdrom_do_packet_command (ide_drive_t *drive) |
| 1278 | { |
| 1279 | int len; |
| 1280 | struct request *rq = HWGROUP(drive)->rq; |
| 1281 | struct cdrom_info *info = drive->driver_data; |
| 1282 | |
| 1283 | info->dma = 0; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1284 | rq->cmd_flags &= ~REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1285 | len = rq->data_len; |
| 1286 | |
| 1287 | /* Start sending the command to the drive. */ |
| 1288 | return cdrom_start_packet_command(drive, len, cdrom_do_pc_continuation); |
| 1289 | } |
| 1290 | |
| 1291 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 1292 | static int cdrom_queue_packet_command(ide_drive_t *drive, struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1293 | { |
| 1294 | struct request_sense sense; |
| 1295 | int retries = 10; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1296 | unsigned int flags = rq->cmd_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | |
| 1298 | if (rq->sense == NULL) |
| 1299 | rq->sense = &sense; |
| 1300 | |
| 1301 | /* Start of retry loop. */ |
| 1302 | do { |
| 1303 | int error; |
| 1304 | unsigned long time = jiffies; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1305 | rq->cmd_flags = flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | |
| 1307 | error = ide_do_drive_cmd(drive, rq, ide_wait); |
| 1308 | time = jiffies - time; |
| 1309 | |
| 1310 | /* FIXME: we should probably abort/retry or something |
| 1311 | * in case of failure */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1312 | if (rq->cmd_flags & REQ_FAILED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1313 | /* The request failed. Retry if it was due to a unit |
| 1314 | attention status |
| 1315 | (usually means media was changed). */ |
| 1316 | struct request_sense *reqbuf = rq->sense; |
| 1317 | |
| 1318 | if (reqbuf->sense_key == UNIT_ATTENTION) |
| 1319 | cdrom_saw_media_change(drive); |
| 1320 | else if (reqbuf->sense_key == NOT_READY && |
| 1321 | reqbuf->asc == 4 && reqbuf->ascq != 4) { |
| 1322 | /* The drive is in the process of loading |
| 1323 | a disk. Retry, but wait a little to give |
| 1324 | the drive time to complete the load. */ |
| 1325 | ssleep(2); |
| 1326 | } else { |
| 1327 | /* Otherwise, don't retry. */ |
| 1328 | retries = 0; |
| 1329 | } |
| 1330 | --retries; |
| 1331 | } |
| 1332 | |
| 1333 | /* End of retry loop. */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1334 | } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | |
| 1336 | /* Return an error if the command failed. */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1337 | return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1338 | } |
| 1339 | |
| 1340 | /* |
| 1341 | * Write handling |
| 1342 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1343 | static int cdrom_write_check_ireason(ide_drive_t *drive, int len, int ireason) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | { |
| 1345 | /* Two notes about IDE interrupt reason here - 0 means that |
| 1346 | * the drive wants to receive data from us, 2 means that |
| 1347 | * the drive is expecting to transfer data to us. |
| 1348 | */ |
| 1349 | if (ireason == 0) |
| 1350 | return 0; |
| 1351 | else if (ireason == 2) { |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1352 | ide_hwif_t *hwif = drive->hwif; |
| 1353 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1354 | /* Whoops... The drive wants to send data. */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1355 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
| 1356 | drive->name, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1358 | ide_cd_pad_transfer(drive, hwif->atapi_input_bytes, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1359 | } else { |
| 1360 | /* Drive wants a command packet, or invalid ireason... */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1361 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
| 1362 | drive->name, __FUNCTION__, ireason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | } |
| 1364 | |
| 1365 | cdrom_end_request(drive, 0); |
| 1366 | return 1; |
| 1367 | } |
| 1368 | |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1369 | /* |
| 1370 | * Called from blk_end_request_callback() after the data of the request |
| 1371 | * is completed and before the request is completed. |
| 1372 | * By returning value '1', blk_end_request_callback() returns immediately |
| 1373 | * without completing the request. |
| 1374 | */ |
| 1375 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) |
| 1376 | { |
| 1377 | return 1; |
| 1378 | } |
| 1379 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1380 | /* |
| 1381 | * best way to deal with dma that is not sector aligned right now... note |
| 1382 | * that in this path we are not using ->data or ->buffer at all. this irs |
| 1383 | * can replace cdrom_pc_intr, cdrom_read_intr, and cdrom_write_intr in the |
| 1384 | * future. |
| 1385 | */ |
| 1386 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
| 1387 | { |
| 1388 | struct cdrom_info *info = drive->driver_data; |
| 1389 | struct request *rq = HWGROUP(drive)->rq; |
| 1390 | int dma_error, dma, stat, ireason, len, thislen; |
| 1391 | u8 lowcyl, highcyl; |
| 1392 | xfer_func_t *xferfunc; |
| 1393 | unsigned long flags; |
| 1394 | |
| 1395 | /* Check for errors. */ |
| 1396 | dma_error = 0; |
| 1397 | dma = info->dma; |
| 1398 | if (dma) { |
| 1399 | info->dma = 0; |
| 1400 | dma_error = HWIF(drive)->ide_dma_end(drive); |
Bartlomiej Zolnierkiewicz | eba15fb | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1401 | if (dma_error) { |
| 1402 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, |
| 1403 | rq_data_dir(rq) ? "write" : "read"); |
| 1404 | ide_dma_off(drive); |
| 1405 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | } |
| 1407 | |
| 1408 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1409 | return ide_stopped; |
| 1410 | |
| 1411 | /* |
| 1412 | * using dma, transfer is complete now |
| 1413 | */ |
| 1414 | if (dma) { |
Bartlomiej Zolnierkiewicz | eba15fb | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1415 | if (dma_error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1416 | return ide_error(drive, "dma error", stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1418 | spin_lock_irqsave(&ide_lock, flags); |
| 1419 | if (__blk_end_request(rq, 0, rq->data_len)) |
| 1420 | BUG(); |
| 1421 | HWGROUP(drive)->rq = NULL; |
| 1422 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1423 | |
| 1424 | return ide_stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | } |
| 1426 | |
| 1427 | /* |
| 1428 | * ok we fall to pio :/ |
| 1429 | */ |
| 1430 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
| 1431 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1432 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1433 | |
| 1434 | len = lowcyl + (256 * highcyl); |
| 1435 | thislen = rq->data_len; |
| 1436 | if (thislen > len) |
| 1437 | thislen = len; |
| 1438 | |
| 1439 | /* |
| 1440 | * If DRQ is clear, the command has completed. |
| 1441 | */ |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1442 | if ((stat & DRQ_STAT) == 0) { |
| 1443 | spin_lock_irqsave(&ide_lock, flags); |
Jens Axboe | 4f4f6c2 | 2008-01-31 13:57:51 +0100 | [diff] [blame] | 1444 | if (__blk_end_request(rq, 0, rq->data_len)) |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1445 | BUG(); |
| 1446 | HWGROUP(drive)->rq = NULL; |
| 1447 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1448 | |
| 1449 | return ide_stopped; |
| 1450 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | |
| 1452 | /* |
| 1453 | * check which way to transfer data |
| 1454 | */ |
| 1455 | if (rq_data_dir(rq) == WRITE) { |
| 1456 | /* |
| 1457 | * write to drive |
| 1458 | */ |
| 1459 | if (cdrom_write_check_ireason(drive, len, ireason)) |
| 1460 | return ide_stopped; |
| 1461 | |
| 1462 | xferfunc = HWIF(drive)->atapi_output_bytes; |
| 1463 | } else { |
| 1464 | /* |
| 1465 | * read from drive |
| 1466 | */ |
| 1467 | if (cdrom_read_check_ireason(drive, len, ireason)) |
| 1468 | return ide_stopped; |
| 1469 | |
| 1470 | xferfunc = HWIF(drive)->atapi_input_bytes; |
| 1471 | } |
| 1472 | |
| 1473 | /* |
| 1474 | * transfer data |
| 1475 | */ |
| 1476 | while (thislen > 0) { |
| 1477 | int blen = blen = rq->data_len; |
| 1478 | char *ptr = rq->data; |
| 1479 | |
| 1480 | /* |
| 1481 | * bio backed? |
| 1482 | */ |
| 1483 | if (rq->bio) { |
| 1484 | ptr = bio_data(rq->bio); |
| 1485 | blen = bio_iovec(rq->bio)->bv_len; |
| 1486 | } |
| 1487 | |
| 1488 | if (!ptr) { |
| 1489 | printk(KERN_ERR "%s: confused, missing data\n", drive->name); |
| 1490 | break; |
| 1491 | } |
| 1492 | |
| 1493 | if (blen > thislen) |
| 1494 | blen = thislen; |
| 1495 | |
| 1496 | xferfunc(drive, ptr, blen); |
| 1497 | |
| 1498 | thislen -= blen; |
| 1499 | len -= blen; |
| 1500 | rq->data_len -= blen; |
| 1501 | |
| 1502 | if (rq->bio) |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1503 | /* |
| 1504 | * The request can't be completed until DRQ is cleared. |
| 1505 | * So complete the data, but don't complete the request |
| 1506 | * using the dummy function for the callback feature |
| 1507 | * of blk_end_request_callback(). |
| 1508 | */ |
| 1509 | blk_end_request_callback(rq, 0, blen, |
| 1510 | cdrom_newpc_intr_dummy_cb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1511 | else |
| 1512 | rq->data += blen; |
| 1513 | } |
| 1514 | |
| 1515 | /* |
| 1516 | * pad, if necessary |
| 1517 | */ |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1518 | if (len > 0) |
| 1519 | ide_cd_pad_transfer(drive, xferfunc, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1520 | |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 1521 | BUG_ON(HWGROUP(drive)->handler != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1522 | |
| 1523 | ide_set_handler(drive, cdrom_newpc_intr, rq->timeout, NULL); |
| 1524 | return ide_started; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | } |
| 1526 | |
| 1527 | static ide_startstop_t cdrom_write_intr(ide_drive_t *drive) |
| 1528 | { |
| 1529 | int stat, ireason, len, sectors_to_transfer, uptodate; |
| 1530 | struct cdrom_info *info = drive->driver_data; |
| 1531 | int dma_error = 0, dma = info->dma; |
| 1532 | u8 lowcyl = 0, highcyl = 0; |
| 1533 | |
| 1534 | struct request *rq = HWGROUP(drive)->rq; |
| 1535 | |
| 1536 | /* Check for errors. */ |
| 1537 | if (dma) { |
| 1538 | info->dma = 0; |
Bartlomiej Zolnierkiewicz | b481b23 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1539 | dma_error = HWIF(drive)->ide_dma_end(drive); |
| 1540 | if (dma_error) { |
| 1541 | printk(KERN_ERR "%s: DMA write error\n", drive->name); |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 1542 | ide_dma_off(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | } |
| 1544 | } |
| 1545 | |
| 1546 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1547 | return ide_stopped; |
| 1548 | |
| 1549 | /* |
| 1550 | * using dma, transfer is complete now |
| 1551 | */ |
| 1552 | if (dma) { |
| 1553 | if (dma_error) |
| 1554 | return ide_error(drive, "dma error", stat); |
| 1555 | |
| 1556 | ide_end_request(drive, 1, rq->nr_sectors); |
| 1557 | return ide_stopped; |
| 1558 | } |
| 1559 | |
| 1560 | /* Read the interrupt reason and the transfer length. */ |
Bartlomiej Zolnierkiewicz | 31a7119 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1561 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1563 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1564 | |
| 1565 | len = lowcyl + (256 * highcyl); |
| 1566 | |
| 1567 | /* If DRQ is clear, the command has completed. */ |
| 1568 | if ((stat & DRQ_STAT) == 0) { |
| 1569 | /* If we're not done writing, complain. |
| 1570 | * Otherwise, complete the command normally. |
| 1571 | */ |
| 1572 | uptodate = 1; |
| 1573 | if (rq->current_nr_sectors > 0) { |
Bartlomiej Zolnierkiewicz | b481b23 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1574 | printk(KERN_ERR "%s: %s: data underrun (%d blocks)\n", |
| 1575 | drive->name, __FUNCTION__, |
| 1576 | rq->current_nr_sectors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | uptodate = 0; |
| 1578 | } |
| 1579 | cdrom_end_request(drive, uptodate); |
| 1580 | return ide_stopped; |
| 1581 | } |
| 1582 | |
| 1583 | /* Check that the drive is expecting to do the same thing we are. */ |
| 1584 | if (cdrom_write_check_ireason(drive, len, ireason)) |
| 1585 | return ide_stopped; |
| 1586 | |
| 1587 | sectors_to_transfer = len / SECTOR_SIZE; |
| 1588 | |
| 1589 | /* |
| 1590 | * now loop and write out the data |
| 1591 | */ |
| 1592 | while (sectors_to_transfer > 0) { |
| 1593 | int this_transfer; |
| 1594 | |
| 1595 | if (!rq->current_nr_sectors) { |
Bartlomiej Zolnierkiewicz | b481b23 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1596 | printk(KERN_ERR "%s: %s: confused, missing data\n", |
| 1597 | drive->name, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1598 | break; |
| 1599 | } |
| 1600 | |
| 1601 | /* |
| 1602 | * Figure out how many sectors we can transfer |
| 1603 | */ |
| 1604 | this_transfer = min_t(int, sectors_to_transfer, rq->current_nr_sectors); |
| 1605 | |
| 1606 | while (this_transfer > 0) { |
| 1607 | HWIF(drive)->atapi_output_bytes(drive, rq->buffer, SECTOR_SIZE); |
| 1608 | rq->buffer += SECTOR_SIZE; |
| 1609 | --rq->nr_sectors; |
| 1610 | --rq->current_nr_sectors; |
| 1611 | ++rq->sector; |
| 1612 | --this_transfer; |
| 1613 | --sectors_to_transfer; |
| 1614 | } |
| 1615 | |
| 1616 | /* |
| 1617 | * current buffer complete, move on |
| 1618 | */ |
| 1619 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) |
| 1620 | cdrom_end_request(drive, 1); |
| 1621 | } |
| 1622 | |
| 1623 | /* re-arm handler */ |
| 1624 | ide_set_handler(drive, &cdrom_write_intr, ATAPI_WAIT_PC, NULL); |
| 1625 | return ide_started; |
| 1626 | } |
| 1627 | |
| 1628 | static ide_startstop_t cdrom_start_write_cont(ide_drive_t *drive) |
| 1629 | { |
| 1630 | struct request *rq = HWGROUP(drive)->rq; |
| 1631 | |
| 1632 | #if 0 /* the immediate bit */ |
| 1633 | rq->cmd[1] = 1 << 3; |
| 1634 | #endif |
| 1635 | rq->timeout = ATAPI_WAIT_PC; |
| 1636 | |
| 1637 | return cdrom_transfer_packet_command(drive, rq, cdrom_write_intr); |
| 1638 | } |
| 1639 | |
| 1640 | static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq) |
| 1641 | { |
| 1642 | struct cdrom_info *info = drive->driver_data; |
| 1643 | struct gendisk *g = info->disk; |
| 1644 | unsigned short sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1645 | |
| 1646 | /* |
| 1647 | * writes *must* be hardware frame aligned |
| 1648 | */ |
| 1649 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || |
| 1650 | (rq->sector & (sectors_per_frame - 1))) { |
| 1651 | cdrom_end_request(drive, 0); |
| 1652 | return ide_stopped; |
| 1653 | } |
| 1654 | |
| 1655 | /* |
| 1656 | * disk has become write protected |
| 1657 | */ |
| 1658 | if (g->policy) { |
| 1659 | cdrom_end_request(drive, 0); |
| 1660 | return ide_stopped; |
| 1661 | } |
| 1662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1663 | info->nsectors_buffered = 0; |
| 1664 | |
| 1665 | /* use dma, if possible. we don't need to check more, since we |
| 1666 | * know that the transfer is always (at least!) frame aligned */ |
| 1667 | info->dma = drive->using_dma ? 1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1668 | |
| 1669 | info->devinfo.media_written = 1; |
| 1670 | |
| 1671 | /* Start sending the write request to the drive. */ |
| 1672 | return cdrom_start_packet_command(drive, 32768, cdrom_start_write_cont); |
| 1673 | } |
| 1674 | |
| 1675 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) |
| 1676 | { |
| 1677 | struct request *rq = HWGROUP(drive)->rq; |
| 1678 | |
| 1679 | if (!rq->timeout) |
| 1680 | rq->timeout = ATAPI_WAIT_PC; |
| 1681 | |
| 1682 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
| 1683 | } |
| 1684 | |
| 1685 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) |
| 1686 | { |
| 1687 | struct cdrom_info *info = drive->driver_data; |
| 1688 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1689 | rq->cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | |
| 1691 | info->dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | |
| 1693 | /* |
| 1694 | * sg request |
| 1695 | */ |
| 1696 | if (rq->bio) { |
| 1697 | int mask = drive->queue->dma_alignment; |
| 1698 | unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); |
| 1699 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1700 | info->dma = drive->using_dma; |
| 1701 | |
| 1702 | /* |
| 1703 | * check if dma is safe |
Linus Torvalds | 5d9e4ea | 2005-05-27 07:36:17 -0700 | [diff] [blame] | 1704 | * |
| 1705 | * NOTE! The "len" and "addr" checks should possibly have |
| 1706 | * separate masks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1707 | */ |
Jens Axboe | 4e7c681 | 2005-05-31 17:47:36 +0200 | [diff] [blame] | 1708 | if ((rq->data_len & 15) || (addr & mask)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | info->dma = 0; |
| 1710 | } |
| 1711 | |
| 1712 | /* Start sending the command to the drive. */ |
| 1713 | return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); |
| 1714 | } |
| 1715 | |
| 1716 | /**************************************************************************** |
| 1717 | * cdrom driver request routine. |
| 1718 | */ |
| 1719 | static ide_startstop_t |
| 1720 | ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block) |
| 1721 | { |
| 1722 | ide_startstop_t action; |
| 1723 | struct cdrom_info *info = drive->driver_data; |
| 1724 | |
| 1725 | if (blk_fs_request(rq)) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1726 | if (info->cd_flags & IDE_CD_FLAG_SEEKING) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1727 | unsigned long elapsed = jiffies - info->start_seek; |
| 1728 | int stat = HWIF(drive)->INB(IDE_STATUS_REG); |
| 1729 | |
| 1730 | if ((stat & SEEK_STAT) != SEEK_STAT) { |
| 1731 | if (elapsed < IDECD_SEEK_TIMEOUT) { |
| 1732 | ide_stall_queue(drive, IDECD_SEEK_TIMER); |
| 1733 | return ide_stopped; |
| 1734 | } |
| 1735 | printk (KERN_ERR "%s: DSC timeout\n", drive->name); |
| 1736 | } |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1737 | info->cd_flags &= ~IDE_CD_FLAG_SEEKING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | } |
| 1739 | if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) { |
| 1740 | action = cdrom_start_seek(drive, block); |
| 1741 | } else { |
| 1742 | if (rq_data_dir(rq) == READ) |
| 1743 | action = cdrom_start_read(drive, block); |
| 1744 | else |
| 1745 | action = cdrom_start_write(drive, rq); |
| 1746 | } |
| 1747 | info->last_block = block; |
| 1748 | return action; |
Jens Axboe | cea2885 | 2006-10-12 15:08:45 +0200 | [diff] [blame] | 1749 | } else if (rq->cmd_type == REQ_TYPE_SENSE || |
| 1750 | rq->cmd_type == REQ_TYPE_ATA_PC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | return cdrom_do_packet_command(drive); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1752 | } else if (blk_pc_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1753 | return cdrom_do_block_pc(drive, rq); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1754 | } else if (blk_special_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | /* |
| 1756 | * right now this can only be a reset... |
| 1757 | */ |
| 1758 | cdrom_end_request(drive, 1); |
| 1759 | return ide_stopped; |
| 1760 | } |
| 1761 | |
| 1762 | blk_dump_rq_flags(rq, "ide-cd bad flags"); |
| 1763 | cdrom_end_request(drive, 0); |
| 1764 | return ide_stopped; |
| 1765 | } |
| 1766 | |
| 1767 | |
| 1768 | |
| 1769 | /**************************************************************************** |
| 1770 | * Ioctl handling. |
| 1771 | * |
| 1772 | * Routines which queue packet commands take as a final argument a pointer |
| 1773 | * to a request_sense struct. If execution of the command results |
| 1774 | * in an error with a CHECK CONDITION status, this structure will be filled |
| 1775 | * with the results of the subsequent request sense command. The pointer |
| 1776 | * can also be NULL, in which case no sense information is returned. |
| 1777 | */ |
| 1778 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1779 | static |
| 1780 | void msf_from_bcd (struct atapi_msf *msf) |
| 1781 | { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame^] | 1782 | msf->minute = BCD2BIN(msf->minute); |
| 1783 | msf->second = BCD2BIN(msf->second); |
| 1784 | msf->frame = BCD2BIN(msf->frame); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1785 | } |
| 1786 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | static inline |
| 1788 | void lba_to_msf (int lba, byte *m, byte *s, byte *f) |
| 1789 | { |
| 1790 | lba += CD_MSF_OFFSET; |
| 1791 | lba &= 0xffffff; /* negative lbas use only 24 bits */ |
| 1792 | *m = lba / (CD_SECS * CD_FRAMES); |
| 1793 | lba %= (CD_SECS * CD_FRAMES); |
| 1794 | *s = lba / CD_FRAMES; |
| 1795 | *f = lba % CD_FRAMES; |
| 1796 | } |
| 1797 | |
| 1798 | |
| 1799 | static inline |
| 1800 | int msf_to_lba (byte m, byte s, byte f) |
| 1801 | { |
| 1802 | return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET; |
| 1803 | } |
| 1804 | |
| 1805 | static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
| 1806 | { |
| 1807 | struct request req; |
| 1808 | struct cdrom_info *info = drive->driver_data; |
| 1809 | struct cdrom_device_info *cdi = &info->devinfo; |
| 1810 | |
| 1811 | cdrom_prepare_request(drive, &req); |
| 1812 | |
| 1813 | req.sense = sense; |
| 1814 | req.cmd[0] = GPCMD_TEST_UNIT_READY; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1815 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1817 | /* |
| 1818 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to |
| 1819 | * switch CDs instead of supporting the LOAD_UNLOAD opcode. |
| 1820 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1821 | req.cmd[7] = cdi->sanyo_slot % 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1822 | |
| 1823 | return cdrom_queue_packet_command(drive, &req); |
| 1824 | } |
| 1825 | |
| 1826 | |
| 1827 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ |
| 1828 | static int |
| 1829 | cdrom_lockdoor(ide_drive_t *drive, int lockflag, struct request_sense *sense) |
| 1830 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1831 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1832 | struct request_sense my_sense; |
| 1833 | struct request req; |
| 1834 | int stat; |
| 1835 | |
| 1836 | if (sense == NULL) |
| 1837 | sense = &my_sense; |
| 1838 | |
| 1839 | /* If the drive cannot lock the door, just pretend. */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1840 | if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | stat = 0; |
| 1842 | } else { |
| 1843 | cdrom_prepare_request(drive, &req); |
| 1844 | req.sense = sense; |
| 1845 | req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
| 1846 | req.cmd[4] = lockflag ? 1 : 0; |
| 1847 | stat = cdrom_queue_packet_command(drive, &req); |
| 1848 | } |
| 1849 | |
| 1850 | /* If we got an illegal field error, the drive |
| 1851 | probably cannot lock the door. */ |
| 1852 | if (stat != 0 && |
| 1853 | sense->sense_key == ILLEGAL_REQUEST && |
| 1854 | (sense->asc == 0x24 || sense->asc == 0x20)) { |
| 1855 | printk (KERN_ERR "%s: door locking not supported\n", |
| 1856 | drive->name); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1857 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | stat = 0; |
| 1859 | } |
| 1860 | |
| 1861 | /* no medium, that's alright. */ |
| 1862 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) |
| 1863 | stat = 0; |
| 1864 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1865 | if (stat == 0) { |
| 1866 | if (lockflag) |
| 1867 | cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED; |
| 1868 | else |
| 1869 | cd->cd_flags &= ~IDE_CD_FLAG_DOOR_LOCKED; |
| 1870 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | |
| 1872 | return stat; |
| 1873 | } |
| 1874 | |
| 1875 | |
| 1876 | /* Eject the disk if EJECTFLAG is 0. |
| 1877 | If EJECTFLAG is 1, try to reload the disk. */ |
| 1878 | static int cdrom_eject(ide_drive_t *drive, int ejectflag, |
| 1879 | struct request_sense *sense) |
| 1880 | { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1881 | struct cdrom_info *cd = drive->driver_data; |
| 1882 | struct cdrom_device_info *cdi = &cd->devinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1883 | struct request req; |
| 1884 | char loej = 0x02; |
| 1885 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1886 | if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | return -EDRIVE_CANT_DO_THIS; |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1888 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1889 | /* reload fails on some drives, if the tray is locked */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1890 | if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1891 | return 0; |
| 1892 | |
| 1893 | cdrom_prepare_request(drive, &req); |
| 1894 | |
| 1895 | /* only tell drive to close tray if open, if it can do that */ |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1896 | if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1897 | loej = 0; |
| 1898 | |
| 1899 | req.sense = sense; |
| 1900 | req.cmd[0] = GPCMD_START_STOP_UNIT; |
| 1901 | req.cmd[4] = loej | (ejectflag != 0); |
| 1902 | return cdrom_queue_packet_command(drive, &req); |
| 1903 | } |
| 1904 | |
| 1905 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, |
| 1906 | unsigned long *sectors_per_frame, |
| 1907 | struct request_sense *sense) |
| 1908 | { |
| 1909 | struct { |
| 1910 | __u32 lba; |
| 1911 | __u32 blocklen; |
| 1912 | } capbuf; |
| 1913 | |
| 1914 | int stat; |
| 1915 | struct request req; |
| 1916 | |
| 1917 | cdrom_prepare_request(drive, &req); |
| 1918 | |
| 1919 | req.sense = sense; |
| 1920 | req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; |
| 1921 | req.data = (char *)&capbuf; |
| 1922 | req.data_len = sizeof(capbuf); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1923 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1924 | |
| 1925 | stat = cdrom_queue_packet_command(drive, &req); |
| 1926 | if (stat == 0) { |
| 1927 | *capacity = 1 + be32_to_cpu(capbuf.lba); |
| 1928 | *sectors_per_frame = |
| 1929 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; |
| 1930 | } |
| 1931 | |
| 1932 | return stat; |
| 1933 | } |
| 1934 | |
| 1935 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, |
| 1936 | int format, char *buf, int buflen, |
| 1937 | struct request_sense *sense) |
| 1938 | { |
| 1939 | struct request req; |
| 1940 | |
| 1941 | cdrom_prepare_request(drive, &req); |
| 1942 | |
| 1943 | req.sense = sense; |
| 1944 | req.data = buf; |
| 1945 | req.data_len = buflen; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1946 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1947 | req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
| 1948 | req.cmd[6] = trackno; |
| 1949 | req.cmd[7] = (buflen >> 8); |
| 1950 | req.cmd[8] = (buflen & 0xff); |
| 1951 | req.cmd[9] = (format << 6); |
| 1952 | |
| 1953 | if (msf_flag) |
| 1954 | req.cmd[1] = 2; |
| 1955 | |
| 1956 | return cdrom_queue_packet_command(drive, &req); |
| 1957 | } |
| 1958 | |
| 1959 | |
| 1960 | /* Try to read the entire TOC for the disk into our internal buffer. */ |
| 1961 | static int cdrom_read_toc(ide_drive_t *drive, struct request_sense *sense) |
| 1962 | { |
| 1963 | int stat, ntracks, i; |
| 1964 | struct cdrom_info *info = drive->driver_data; |
| 1965 | struct cdrom_device_info *cdi = &info->devinfo; |
| 1966 | struct atapi_toc *toc = info->toc; |
| 1967 | struct { |
| 1968 | struct atapi_toc_header hdr; |
| 1969 | struct atapi_toc_entry ent; |
| 1970 | } ms_tmp; |
| 1971 | long last_written; |
| 1972 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; |
| 1973 | |
| 1974 | if (toc == NULL) { |
| 1975 | /* Try to allocate space. */ |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1976 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | if (toc == NULL) { |
| 1978 | printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); |
| 1979 | return -ENOMEM; |
| 1980 | } |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1981 | info->toc = toc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1982 | } |
| 1983 | |
| 1984 | /* Check to see if the existing data is still valid. |
| 1985 | If it is, just return. */ |
| 1986 | (void) cdrom_check_status(drive, sense); |
| 1987 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1988 | if (info->cd_flags & IDE_CD_FLAG_TOC_VALID) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1989 | return 0; |
| 1990 | |
| 1991 | /* Try to get the total cdrom capacity and sector size. */ |
| 1992 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, |
| 1993 | sense); |
| 1994 | if (stat) |
| 1995 | toc->capacity = 0x1fffff; |
| 1996 | |
| 1997 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 1998 | /* Save a private copy of te TOC capacity for error handling */ |
| 1999 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
| 2000 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | blk_queue_hardsect_size(drive->queue, |
| 2002 | sectors_per_frame << SECTOR_BITS); |
| 2003 | |
| 2004 | /* First read just the header, so we know how long the TOC is. */ |
| 2005 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, |
| 2006 | sizeof(struct atapi_toc_header), sense); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2007 | if (stat) |
| 2008 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2009 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2010 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame^] | 2011 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
| 2012 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2013 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2014 | |
| 2015 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; |
| 2016 | if (ntracks <= 0) |
| 2017 | return -EIO; |
| 2018 | if (ntracks > MAX_TRACKS) |
| 2019 | ntracks = MAX_TRACKS; |
| 2020 | |
| 2021 | /* Now read the whole schmeer. */ |
| 2022 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, |
| 2023 | (char *)&toc->hdr, |
| 2024 | sizeof(struct atapi_toc_header) + |
| 2025 | (ntracks + 1) * |
| 2026 | sizeof(struct atapi_toc_entry), sense); |
| 2027 | |
| 2028 | if (stat && toc->hdr.first_track > 1) { |
| 2029 | /* Cds with CDI tracks only don't have any TOC entries, |
| 2030 | despite of this the returned values are |
| 2031 | first_track == last_track = number of CDI tracks + 1, |
| 2032 | so that this case is indistinguishable from the same |
| 2033 | layout plus an additional audio track. |
| 2034 | If we get an error for the regular case, we assume |
| 2035 | a CDI without additional audio tracks. In this case |
| 2036 | the readable TOC is empty (CDI tracks are not included) |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 2037 | and only holds the Leadout entry. Heiko Eißfeldt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2038 | ntracks = 0; |
| 2039 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, |
| 2040 | (char *)&toc->hdr, |
| 2041 | sizeof(struct atapi_toc_header) + |
| 2042 | (ntracks + 1) * |
| 2043 | sizeof(struct atapi_toc_entry), |
| 2044 | sense); |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2045 | if (stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2046 | return stat; |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2047 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2048 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame^] | 2049 | toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT); |
| 2050 | toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT); |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2051 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2052 | toc->hdr.first_track = CDROM_LEADOUT; |
| 2053 | toc->hdr.last_track = CDROM_LEADOUT; |
| 2054 | } |
| 2055 | } |
| 2056 | |
| 2057 | if (stat) |
| 2058 | return stat; |
| 2059 | |
| 2060 | toc->hdr.toc_length = ntohs (toc->hdr.toc_length); |
| 2061 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2062 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame^] | 2063 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
| 2064 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2066 | |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2067 | for (i = 0; i <= ntracks; i++) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2068 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
| 2069 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame^] | 2070 | toc->ent[i].track = BCD2BIN(toc->ent[i].track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | msf_from_bcd(&toc->ent[i].addr.msf); |
| 2072 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2073 | toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute, |
| 2074 | toc->ent[i].addr.msf.second, |
| 2075 | toc->ent[i].addr.msf.frame); |
| 2076 | } |
| 2077 | |
| 2078 | /* Read the multisession information. */ |
| 2079 | if (toc->hdr.first_track != CDROM_LEADOUT) { |
| 2080 | /* Read the multisession information. */ |
| 2081 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, |
| 2082 | sizeof(ms_tmp), sense); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2083 | if (stat) |
| 2084 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2085 | |
| 2086 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); |
| 2087 | } else { |
| 2088 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; |
| 2089 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ |
| 2090 | } |
| 2091 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2092 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2093 | /* Re-read multisession information using MSF format */ |
| 2094 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, |
| 2095 | sizeof(ms_tmp), sense); |
| 2096 | if (stat) |
| 2097 | return stat; |
| 2098 | |
| 2099 | msf_from_bcd (&ms_tmp.ent.addr.msf); |
| 2100 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, |
| 2101 | ms_tmp.ent.addr.msf.second, |
| 2102 | ms_tmp.ent.addr.msf.frame); |
| 2103 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2104 | |
| 2105 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); |
| 2106 | |
| 2107 | /* Now try to get the total cdrom capacity. */ |
| 2108 | stat = cdrom_get_last_written(cdi, &last_written); |
| 2109 | if (!stat && (last_written > toc->capacity)) { |
| 2110 | toc->capacity = last_written; |
| 2111 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 2112 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2113 | } |
| 2114 | |
| 2115 | /* Remember that we've read this stuff. */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2116 | info->cd_flags |= IDE_CD_FLAG_TOC_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2117 | |
| 2118 | return 0; |
| 2119 | } |
| 2120 | |
| 2121 | |
| 2122 | static int cdrom_read_subchannel(ide_drive_t *drive, int format, char *buf, |
| 2123 | int buflen, struct request_sense *sense) |
| 2124 | { |
| 2125 | struct request req; |
| 2126 | |
| 2127 | cdrom_prepare_request(drive, &req); |
| 2128 | |
| 2129 | req.sense = sense; |
| 2130 | req.data = buf; |
| 2131 | req.data_len = buflen; |
| 2132 | req.cmd[0] = GPCMD_READ_SUBCHANNEL; |
| 2133 | req.cmd[1] = 2; /* MSF addressing */ |
| 2134 | req.cmd[2] = 0x40; /* request subQ data */ |
| 2135 | req.cmd[3] = format; |
| 2136 | req.cmd[7] = (buflen >> 8); |
| 2137 | req.cmd[8] = (buflen & 0xff); |
| 2138 | return cdrom_queue_packet_command(drive, &req); |
| 2139 | } |
| 2140 | |
| 2141 | /* ATAPI cdrom drives are free to select the speed you request or any slower |
| 2142 | rate :-( Requesting too fast a speed will _not_ produce an error. */ |
| 2143 | static int cdrom_select_speed(ide_drive_t *drive, int speed, |
| 2144 | struct request_sense *sense) |
| 2145 | { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2146 | struct cdrom_info *cd = drive->driver_data; |
| 2147 | struct cdrom_device_info *cdi = &cd->devinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | struct request req; |
| 2149 | cdrom_prepare_request(drive, &req); |
| 2150 | |
| 2151 | req.sense = sense; |
| 2152 | if (speed == 0) |
| 2153 | speed = 0xffff; /* set to max */ |
| 2154 | else |
| 2155 | speed *= 177; /* Nx to kbytes/s */ |
| 2156 | |
| 2157 | req.cmd[0] = GPCMD_SET_SPEED; |
| 2158 | /* Read Drive speed in kbytes/second MSB */ |
| 2159 | req.cmd[2] = (speed >> 8) & 0xff; |
| 2160 | /* Read Drive speed in kbytes/second LSB */ |
| 2161 | req.cmd[3] = speed & 0xff; |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2162 | if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) != |
| 2163 | (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2164 | /* Write Drive speed in kbytes/second MSB */ |
| 2165 | req.cmd[4] = (speed >> 8) & 0xff; |
| 2166 | /* Write Drive speed in kbytes/second LSB */ |
| 2167 | req.cmd[5] = speed & 0xff; |
| 2168 | } |
| 2169 | |
| 2170 | return cdrom_queue_packet_command(drive, &req); |
| 2171 | } |
| 2172 | |
| 2173 | static int cdrom_play_audio(ide_drive_t *drive, int lba_start, int lba_end) |
| 2174 | { |
| 2175 | struct request_sense sense; |
| 2176 | struct request req; |
| 2177 | |
| 2178 | cdrom_prepare_request(drive, &req); |
| 2179 | |
| 2180 | req.sense = &sense; |
| 2181 | req.cmd[0] = GPCMD_PLAY_AUDIO_MSF; |
| 2182 | lba_to_msf(lba_start, &req.cmd[3], &req.cmd[4], &req.cmd[5]); |
| 2183 | lba_to_msf(lba_end-1, &req.cmd[6], &req.cmd[7], &req.cmd[8]); |
| 2184 | |
| 2185 | return cdrom_queue_packet_command(drive, &req); |
| 2186 | } |
| 2187 | |
| 2188 | static int cdrom_get_toc_entry(ide_drive_t *drive, int track, |
| 2189 | struct atapi_toc_entry **ent) |
| 2190 | { |
| 2191 | struct cdrom_info *info = drive->driver_data; |
| 2192 | struct atapi_toc *toc = info->toc; |
| 2193 | int ntracks; |
| 2194 | |
| 2195 | /* |
| 2196 | * don't serve cached data, if the toc isn't valid |
| 2197 | */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2198 | if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2199 | return -EINVAL; |
| 2200 | |
| 2201 | /* Check validity of requested track number. */ |
| 2202 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; |
| 2203 | if (toc->hdr.first_track == CDROM_LEADOUT) ntracks = 0; |
| 2204 | if (track == CDROM_LEADOUT) |
| 2205 | *ent = &toc->ent[ntracks]; |
| 2206 | else if (track < toc->hdr.first_track || |
| 2207 | track > toc->hdr.last_track) |
| 2208 | return -EINVAL; |
| 2209 | else |
| 2210 | *ent = &toc->ent[track - toc->hdr.first_track]; |
| 2211 | |
| 2212 | return 0; |
| 2213 | } |
| 2214 | |
| 2215 | /* the generic packet interface to cdrom.c */ |
| 2216 | static int ide_cdrom_packet(struct cdrom_device_info *cdi, |
| 2217 | struct packet_command *cgc) |
| 2218 | { |
| 2219 | struct request req; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2220 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2221 | |
| 2222 | if (cgc->timeout <= 0) |
| 2223 | cgc->timeout = ATAPI_WAIT_PC; |
| 2224 | |
| 2225 | /* here we queue the commands from the uniform CD-ROM |
| 2226 | layer. the packet must be complete, as we do not |
| 2227 | touch it at all. */ |
| 2228 | cdrom_prepare_request(drive, &req); |
| 2229 | memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE); |
| 2230 | if (cgc->sense) |
| 2231 | memset(cgc->sense, 0, sizeof(struct request_sense)); |
| 2232 | req.data = cgc->buffer; |
| 2233 | req.data_len = cgc->buflen; |
| 2234 | req.timeout = cgc->timeout; |
| 2235 | |
| 2236 | if (cgc->quiet) |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2237 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2238 | |
| 2239 | req.sense = cgc->sense; |
| 2240 | cgc->stat = cdrom_queue_packet_command(drive, &req); |
| 2241 | if (!cgc->stat) |
| 2242 | cgc->buflen -= req.data_len; |
| 2243 | return cgc->stat; |
| 2244 | } |
| 2245 | |
| 2246 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2247 | int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi, |
| 2248 | unsigned int cmd, void *arg) |
| 2249 | |
| 2250 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2251 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2252 | struct cdrom_info *info = drive->driver_data; |
| 2253 | int stat; |
| 2254 | |
| 2255 | switch (cmd) { |
| 2256 | /* |
| 2257 | * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since |
| 2258 | * atapi doesn't support it |
| 2259 | */ |
| 2260 | case CDROMPLAYTRKIND: { |
| 2261 | unsigned long lba_start, lba_end; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2262 | struct cdrom_ti *ti = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | struct atapi_toc_entry *first_toc, *last_toc; |
| 2264 | |
| 2265 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk0, &first_toc); |
| 2266 | if (stat) |
| 2267 | return stat; |
| 2268 | |
| 2269 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk1, &last_toc); |
| 2270 | if (stat) |
| 2271 | return stat; |
| 2272 | |
| 2273 | if (ti->cdti_trk1 != CDROM_LEADOUT) |
| 2274 | ++last_toc; |
| 2275 | lba_start = first_toc->addr.lba; |
| 2276 | lba_end = last_toc->addr.lba; |
| 2277 | |
| 2278 | if (lba_end <= lba_start) |
| 2279 | return -EINVAL; |
| 2280 | |
| 2281 | return cdrom_play_audio(drive, lba_start, lba_end); |
| 2282 | } |
| 2283 | |
| 2284 | case CDROMREADTOCHDR: { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2285 | struct cdrom_tochdr *tochdr = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2286 | struct atapi_toc *toc; |
| 2287 | |
| 2288 | /* Make sure our saved TOC is valid. */ |
| 2289 | stat = cdrom_read_toc(drive, NULL); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2290 | if (stat) |
| 2291 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | |
| 2293 | toc = info->toc; |
| 2294 | tochdr->cdth_trk0 = toc->hdr.first_track; |
| 2295 | tochdr->cdth_trk1 = toc->hdr.last_track; |
| 2296 | |
| 2297 | return 0; |
| 2298 | } |
| 2299 | |
| 2300 | case CDROMREADTOCENTRY: { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2301 | struct cdrom_tocentry *tocentry = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2302 | struct atapi_toc_entry *toce; |
| 2303 | |
| 2304 | stat = cdrom_get_toc_entry(drive, tocentry->cdte_track, &toce); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2305 | if (stat) |
| 2306 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2307 | |
| 2308 | tocentry->cdte_ctrl = toce->control; |
| 2309 | tocentry->cdte_adr = toce->adr; |
| 2310 | if (tocentry->cdte_format == CDROM_MSF) { |
| 2311 | lba_to_msf (toce->addr.lba, |
| 2312 | &tocentry->cdte_addr.msf.minute, |
| 2313 | &tocentry->cdte_addr.msf.second, |
| 2314 | &tocentry->cdte_addr.msf.frame); |
| 2315 | } else |
| 2316 | tocentry->cdte_addr.lba = toce->addr.lba; |
| 2317 | |
| 2318 | return 0; |
| 2319 | } |
| 2320 | |
| 2321 | default: |
| 2322 | return -EINVAL; |
| 2323 | } |
| 2324 | } |
| 2325 | |
| 2326 | static |
| 2327 | int ide_cdrom_reset (struct cdrom_device_info *cdi) |
| 2328 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2329 | ide_drive_t *drive = cdi->handle; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2330 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2331 | struct request_sense sense; |
| 2332 | struct request req; |
| 2333 | int ret; |
| 2334 | |
| 2335 | cdrom_prepare_request(drive, &req); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2336 | req.cmd_type = REQ_TYPE_SPECIAL; |
| 2337 | req.cmd_flags = REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2338 | ret = ide_do_drive_cmd(drive, &req, ide_wait); |
| 2339 | |
| 2340 | /* |
| 2341 | * A reset will unlock the door. If it was previously locked, |
| 2342 | * lock it again. |
| 2343 | */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2344 | if (cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2345 | (void) cdrom_lockdoor(drive, 1, &sense); |
| 2346 | |
| 2347 | return ret; |
| 2348 | } |
| 2349 | |
| 2350 | |
| 2351 | static |
| 2352 | int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position) |
| 2353 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2354 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2355 | struct request_sense sense; |
| 2356 | |
| 2357 | if (position) { |
| 2358 | int stat = cdrom_lockdoor(drive, 0, &sense); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2359 | if (stat) |
| 2360 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2361 | } |
| 2362 | |
| 2363 | return cdrom_eject(drive, !position, &sense); |
| 2364 | } |
| 2365 | |
| 2366 | static |
| 2367 | int ide_cdrom_lock_door (struct cdrom_device_info *cdi, int lock) |
| 2368 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2369 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2370 | return cdrom_lockdoor(drive, lock, NULL); |
| 2371 | } |
| 2372 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2373 | static int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2374 | { |
| 2375 | struct cdrom_info *info = drive->driver_data; |
| 2376 | struct cdrom_device_info *cdi = &info->devinfo; |
| 2377 | struct packet_command cgc; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2378 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2379 | |
| 2380 | /* |
| 2381 | * ACER50 (and others?) require the full spec length mode sense |
| 2382 | * page capabilities size, but older drives break. |
| 2383 | */ |
| 2384 | if (!(!strcmp(drive->id->model, "ATAPI CD ROM DRIVE 50X MAX") || |
| 2385 | !strcmp(drive->id->model, "WPI CDS-32X"))) |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2386 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2387 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2388 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2389 | do { /* we seem to get stat=0x01,err=0x00 the first time (??) */ |
| 2390 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); |
| 2391 | if (!stat) |
| 2392 | break; |
| 2393 | } while (--attempts); |
| 2394 | return stat; |
| 2395 | } |
| 2396 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2397 | static void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2398 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2399 | struct cdrom_info *cd = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 481c8c6 | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2400 | u16 curspeed, maxspeed; |
| 2401 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2402 | curspeed = *(u16 *)&buf[8 + 14]; |
| 2403 | maxspeed = *(u16 *)&buf[8 + 8]; |
| 2404 | |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2405 | /* The ACER/AOpen 24X cdrom has the speed fields byte-swapped */ |
| 2406 | if (!drive->id->model[0] && |
| 2407 | !strncmp(drive->id->fw_rev, "241N", 4)) { |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2408 | curspeed = le16_to_cpu(curspeed); |
| 2409 | maxspeed = le16_to_cpu(maxspeed); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2410 | } else { |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2411 | curspeed = be16_to_cpu(curspeed); |
| 2412 | maxspeed = be16_to_cpu(maxspeed); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2413 | } |
Bartlomiej Zolnierkiewicz | 481c8c6 | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2414 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2415 | cd->current_speed = (curspeed + (176/2)) / 176; |
| 2416 | cd->max_speed = (maxspeed + (176/2)) / 176; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2417 | } |
| 2418 | |
| 2419 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2420 | int ide_cdrom_select_speed (struct cdrom_device_info *cdi, int speed) |
| 2421 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2422 | ide_drive_t *drive = cdi->handle; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2423 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2424 | struct request_sense sense; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2425 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2426 | int stat; |
| 2427 | |
| 2428 | if ((stat = cdrom_select_speed(drive, speed, &sense)) < 0) |
| 2429 | return stat; |
| 2430 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2431 | if (!ide_cdrom_get_capabilities(drive, buf)) { |
| 2432 | ide_cdrom_update_speed(drive, buf); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2433 | cdi->speed = cd->current_speed; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2434 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2435 | return 0; |
| 2436 | } |
| 2437 | |
| 2438 | /* |
| 2439 | * add logic to try GET_EVENT command first to check for media and tray |
| 2440 | * status. this should be supported by newer cd-r/w and all DVD etc |
| 2441 | * drives |
| 2442 | */ |
| 2443 | static |
| 2444 | int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr) |
| 2445 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2446 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2447 | struct media_event_desc med; |
| 2448 | struct request_sense sense; |
| 2449 | int stat; |
| 2450 | |
| 2451 | if (slot_nr != CDSL_CURRENT) |
| 2452 | return -EINVAL; |
| 2453 | |
| 2454 | stat = cdrom_check_status(drive, &sense); |
| 2455 | if (!stat || sense.sense_key == UNIT_ATTENTION) |
| 2456 | return CDS_DISC_OK; |
| 2457 | |
| 2458 | if (!cdrom_get_media_event(cdi, &med)) { |
| 2459 | if (med.media_present) |
| 2460 | return CDS_DISC_OK; |
| 2461 | else if (med.door_open) |
| 2462 | return CDS_TRAY_OPEN; |
| 2463 | else |
| 2464 | return CDS_NO_DISC; |
| 2465 | } |
| 2466 | |
| 2467 | if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04) |
| 2468 | return CDS_DISC_OK; |
| 2469 | |
| 2470 | /* |
| 2471 | * If not using Mt Fuji extended media tray reports, |
| 2472 | * just return TRAY_OPEN since ATAPI doesn't provide |
| 2473 | * any other way to detect this... |
| 2474 | */ |
| 2475 | if (sense.sense_key == NOT_READY) { |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 2476 | if (sense.asc == 0x3a && sense.ascq == 1) |
| 2477 | return CDS_NO_DISC; |
| 2478 | else |
| 2479 | return CDS_TRAY_OPEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2480 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2481 | return CDS_DRIVE_NOT_READY; |
| 2482 | } |
| 2483 | |
| 2484 | static |
| 2485 | int ide_cdrom_get_last_session (struct cdrom_device_info *cdi, |
| 2486 | struct cdrom_multisession *ms_info) |
| 2487 | { |
| 2488 | struct atapi_toc *toc; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2489 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2490 | struct cdrom_info *info = drive->driver_data; |
| 2491 | struct request_sense sense; |
| 2492 | int ret; |
| 2493 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2494 | if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0 || info->toc == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2495 | if ((ret = cdrom_read_toc(drive, &sense))) |
| 2496 | return ret; |
| 2497 | |
| 2498 | toc = info->toc; |
| 2499 | ms_info->addr.lba = toc->last_session_lba; |
| 2500 | ms_info->xa_flag = toc->xa_flag; |
| 2501 | |
| 2502 | return 0; |
| 2503 | } |
| 2504 | |
| 2505 | static |
| 2506 | int ide_cdrom_get_mcn (struct cdrom_device_info *cdi, |
| 2507 | struct cdrom_mcn *mcn_info) |
| 2508 | { |
| 2509 | int stat; |
| 2510 | char mcnbuf[24]; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2511 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2512 | |
| 2513 | /* get MCN */ |
| 2514 | if ((stat = cdrom_read_subchannel(drive, 2, mcnbuf, sizeof (mcnbuf), NULL))) |
| 2515 | return stat; |
| 2516 | |
| 2517 | memcpy (mcn_info->medium_catalog_number, mcnbuf+9, |
| 2518 | sizeof (mcn_info->medium_catalog_number)-1); |
| 2519 | mcn_info->medium_catalog_number[sizeof (mcn_info->medium_catalog_number)-1] |
| 2520 | = '\0'; |
| 2521 | |
| 2522 | return 0; |
| 2523 | } |
| 2524 | |
| 2525 | |
| 2526 | |
| 2527 | /**************************************************************************** |
| 2528 | * Other driver requests (open, close, check media change). |
| 2529 | */ |
| 2530 | |
| 2531 | static |
| 2532 | int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi, |
| 2533 | int slot_nr) |
| 2534 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2535 | ide_drive_t *drive = cdi->handle; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2536 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2537 | int retval; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2538 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2539 | if (slot_nr == CDSL_CURRENT) { |
| 2540 | (void) cdrom_check_status(drive, NULL); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2541 | retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0; |
| 2542 | cd->cd_flags &= ~IDE_CD_FLAG_MEDIA_CHANGED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2543 | return retval; |
| 2544 | } else { |
| 2545 | return -EINVAL; |
| 2546 | } |
| 2547 | } |
| 2548 | |
| 2549 | |
| 2550 | static |
| 2551 | int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose) |
| 2552 | { |
| 2553 | return 0; |
| 2554 | } |
| 2555 | |
| 2556 | /* |
| 2557 | * Close down the device. Invalidate all cached blocks. |
| 2558 | */ |
| 2559 | |
| 2560 | static |
| 2561 | void ide_cdrom_release_real (struct cdrom_device_info *cdi) |
| 2562 | { |
| 2563 | ide_drive_t *drive = cdi->handle; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2564 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2565 | |
| 2566 | if (!cdi->use_count) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2567 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | } |
| 2569 | |
Bartlomiej Zolnierkiewicz | 20e7f7e | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2570 | #define IDE_CD_CAPABILITIES \ |
| 2571 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ |
| 2572 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ |
| 2573 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ |
| 2574 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ |
| 2575 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2577 | static struct cdrom_device_ops ide_cdrom_dops = { |
| 2578 | .open = ide_cdrom_open_real, |
| 2579 | .release = ide_cdrom_release_real, |
| 2580 | .drive_status = ide_cdrom_drive_status, |
| 2581 | .media_changed = ide_cdrom_check_media_change_real, |
| 2582 | .tray_move = ide_cdrom_tray_move, |
| 2583 | .lock_door = ide_cdrom_lock_door, |
| 2584 | .select_speed = ide_cdrom_select_speed, |
| 2585 | .get_last_session = ide_cdrom_get_last_session, |
| 2586 | .get_mcn = ide_cdrom_get_mcn, |
| 2587 | .reset = ide_cdrom_reset, |
| 2588 | .audio_ioctl = ide_cdrom_audio_ioctl, |
Bartlomiej Zolnierkiewicz | 20e7f7e | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2589 | .capability = IDE_CD_CAPABILITIES, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | .generic_packet = ide_cdrom_packet, |
| 2591 | }; |
| 2592 | |
| 2593 | static int ide_cdrom_register (ide_drive_t *drive, int nslots) |
| 2594 | { |
| 2595 | struct cdrom_info *info = drive->driver_data; |
| 2596 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 2597 | |
| 2598 | devinfo->ops = &ide_cdrom_dops; |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2599 | devinfo->speed = info->current_speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2600 | devinfo->capacity = nslots; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2601 | devinfo->handle = drive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2602 | strcpy(devinfo->name, drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2604 | if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT) |
Bartlomiej Zolnierkiewicz | 3cbd814 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 2605 | devinfo->mask |= CDC_SELECT_SPEED; |
| 2606 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2607 | devinfo->disk = info->disk; |
| 2608 | return register_cdrom(devinfo); |
| 2609 | } |
| 2610 | |
| 2611 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2612 | int ide_cdrom_probe_capabilities (ide_drive_t *drive) |
| 2613 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2614 | struct cdrom_info *cd = drive->driver_data; |
| 2615 | struct cdrom_device_info *cdi = &cd->devinfo; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2616 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
| 2617 | mechtype_t mechtype; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2618 | int nslots = 1; |
| 2619 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2620 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
| 2621 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | |
| 2622 | CDC_MO_DRIVE | CDC_RAM); |
| 2623 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2624 | if (drive->media == ide_optical) { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2625 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2626 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name); |
| 2627 | return nslots; |
| 2628 | } |
| 2629 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2630 | if ((cd->cd_flags & IDE_CD_FLAG_NEC260) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2631 | !strcmp(drive->id->model,"STINGRAY 8422 IDE 8X CD-ROM 7-27-95")) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2632 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2633 | cdi->mask &= ~CDC_PLAY_AUDIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2634 | return nslots; |
| 2635 | } |
| 2636 | |
| 2637 | /* |
| 2638 | * we have to cheat a little here. the packet will eventually |
| 2639 | * be queued with ide_cdrom_packet(), which extracts the |
| 2640 | * drive from cdi->handle. Since this device hasn't been |
| 2641 | * registered with the Uniform layer yet, it can't do this. |
| 2642 | * Same goes for cdi->ops. |
| 2643 | */ |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2644 | cdi->handle = drive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2645 | cdi->ops = &ide_cdrom_dops; |
| 2646 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2647 | if (ide_cdrom_get_capabilities(drive, buf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2648 | return 0; |
| 2649 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2650 | if ((buf[8 + 6] & 0x01) == 0) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2651 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2652 | if (buf[8 + 6] & 0x08) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2653 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2654 | if (buf[8 + 3] & 0x01) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2655 | cdi->mask &= ~CDC_CD_R; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2656 | if (buf[8 + 3] & 0x02) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2657 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2658 | if (buf[8 + 2] & 0x38) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2659 | cdi->mask &= ~CDC_DVD; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2660 | if (buf[8 + 3] & 0x20) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2661 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2662 | if (buf[8 + 3] & 0x10) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2663 | cdi->mask &= ~CDC_DVD_R; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2664 | if (buf[8 + 4] & 0x01) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2665 | cdi->mask &= ~CDC_PLAY_AUDIO; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2666 | |
| 2667 | mechtype = buf[8 + 6] >> 5; |
| 2668 | if (mechtype == mechtype_caddy || mechtype == mechtype_popup) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2669 | cdi->mask |= CDC_CLOSE_TRAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2670 | |
| 2671 | /* Some drives used by Apple don't advertise audio play |
| 2672 | * but they do support reading TOC & audio datas |
| 2673 | */ |
| 2674 | if (strcmp(drive->id->model, "MATSHITADVD-ROM SR-8187") == 0 || |
| 2675 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8186") == 0 || |
| 2676 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8176") == 0 || |
| 2677 | strcmp(drive->id->model, "MATSHITADVD-ROM SR-8174") == 0) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2678 | cdi->mask &= ~CDC_PLAY_AUDIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2679 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2680 | if (cdi->sanyo_slot > 0) { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2681 | cdi->mask &= ~CDC_SELECT_DISC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2682 | nslots = 3; |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2683 | } else if (mechtype == mechtype_individual_changer || |
| 2684 | mechtype == mechtype_cartridge_changer) { |
Bartlomiej Zolnierkiewicz | 2609d06 | 2008-02-01 23:09:19 +0100 | [diff] [blame] | 2685 | nslots = cdrom_number_of_slots(cdi); |
| 2686 | if (nslots > 1) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2687 | cdi->mask &= ~CDC_SELECT_DISC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2688 | } |
| 2689 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2690 | ide_cdrom_update_speed(drive, buf); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2691 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2692 | printk(KERN_INFO "%s: ATAPI", drive->name); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2693 | |
| 2694 | /* don't print speed if the drive reported 0 */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2695 | if (cd->max_speed) |
| 2696 | printk(KERN_CONT " %dX", cd->max_speed); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2697 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2698 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2699 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2700 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
| 2701 | printk(KERN_CONT " DVD%s%s", |
| 2702 | (cdi->mask & CDC_DVD_R) ? "" : "-R", |
| 2703 | (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2705 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
| 2706 | printk(KERN_CONT " CD%s%s", |
| 2707 | (cdi->mask & CDC_CD_R) ? "" : "-R", |
| 2708 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2709 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2710 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
| 2711 | printk(KERN_CONT " changer w/%d slots", nslots); |
| 2712 | else |
| 2713 | printk(KERN_CONT " drive"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2714 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2715 | printk(KERN_CONT ", %dkB Cache\n", be16_to_cpu(*(u16 *)&buf[8 + 12])); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2716 | |
| 2717 | return nslots; |
| 2718 | } |
| 2719 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2720 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2721 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
| 2722 | { |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2723 | ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2724 | } |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2725 | #else |
| 2726 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } |
| 2727 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2728 | |
| 2729 | /* |
| 2730 | * standard prep_rq_fn that builds 10 byte cmds |
| 2731 | */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 2732 | static int ide_cdrom_prep_fs(struct request_queue *q, struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2733 | { |
| 2734 | int hard_sect = queue_hardsect_size(q); |
| 2735 | long block = (long)rq->hard_sector / (hard_sect >> 9); |
| 2736 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); |
| 2737 | |
| 2738 | memset(rq->cmd, 0, sizeof(rq->cmd)); |
| 2739 | |
| 2740 | if (rq_data_dir(rq) == READ) |
| 2741 | rq->cmd[0] = GPCMD_READ_10; |
| 2742 | else |
| 2743 | rq->cmd[0] = GPCMD_WRITE_10; |
| 2744 | |
| 2745 | /* |
| 2746 | * fill in lba |
| 2747 | */ |
| 2748 | rq->cmd[2] = (block >> 24) & 0xff; |
| 2749 | rq->cmd[3] = (block >> 16) & 0xff; |
| 2750 | rq->cmd[4] = (block >> 8) & 0xff; |
| 2751 | rq->cmd[5] = block & 0xff; |
| 2752 | |
| 2753 | /* |
| 2754 | * and transfer length |
| 2755 | */ |
| 2756 | rq->cmd[7] = (blocks >> 8) & 0xff; |
| 2757 | rq->cmd[8] = blocks & 0xff; |
| 2758 | rq->cmd_len = 10; |
| 2759 | return BLKPREP_OK; |
| 2760 | } |
| 2761 | |
| 2762 | /* |
| 2763 | * Most of the SCSI commands are supported directly by ATAPI devices. |
| 2764 | * This transform handles the few exceptions. |
| 2765 | */ |
| 2766 | static int ide_cdrom_prep_pc(struct request *rq) |
| 2767 | { |
| 2768 | u8 *c = rq->cmd; |
| 2769 | |
| 2770 | /* |
| 2771 | * Transform 6-byte read/write commands to the 10-byte version |
| 2772 | */ |
| 2773 | if (c[0] == READ_6 || c[0] == WRITE_6) { |
| 2774 | c[8] = c[4]; |
| 2775 | c[5] = c[3]; |
| 2776 | c[4] = c[2]; |
| 2777 | c[3] = c[1] & 0x1f; |
| 2778 | c[2] = 0; |
| 2779 | c[1] &= 0xe0; |
| 2780 | c[0] += (READ_10 - READ_6); |
| 2781 | rq->cmd_len = 10; |
| 2782 | return BLKPREP_OK; |
| 2783 | } |
| 2784 | |
| 2785 | /* |
| 2786 | * it's silly to pretend we understand 6-byte sense commands, just |
| 2787 | * reject with ILLEGAL_REQUEST and the caller should take the |
| 2788 | * appropriate action |
| 2789 | */ |
| 2790 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { |
| 2791 | rq->errors = ILLEGAL_REQUEST; |
| 2792 | return BLKPREP_KILL; |
| 2793 | } |
| 2794 | |
| 2795 | return BLKPREP_OK; |
| 2796 | } |
| 2797 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 2798 | static int ide_cdrom_prep_fn(struct request_queue *q, struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | { |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2800 | if (blk_fs_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2801 | return ide_cdrom_prep_fs(q, rq); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2802 | else if (blk_pc_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2803 | return ide_cdrom_prep_pc(rq); |
| 2804 | |
| 2805 | return 0; |
| 2806 | } |
| 2807 | |
| 2808 | static |
| 2809 | int ide_cdrom_setup (ide_drive_t *drive) |
| 2810 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2811 | struct cdrom_info *cd = drive->driver_data; |
| 2812 | struct cdrom_device_info *cdi = &cd->devinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2813 | int nslots; |
| 2814 | |
| 2815 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); |
| 2816 | blk_queue_dma_alignment(drive->queue, 31); |
| 2817 | drive->queue->unplug_delay = (1 * HZ) / 1000; |
| 2818 | if (!drive->queue->unplug_delay) |
| 2819 | drive->queue->unplug_delay = 1; |
| 2820 | |
| 2821 | drive->special.all = 0; |
| 2822 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2823 | cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2824 | |
Bartlomiej Zolnierkiewicz | b8d25de | 2008-02-01 23:09:19 +0100 | [diff] [blame] | 2825 | if ((drive->id->config & 0x0060) == 0x20) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2826 | cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT; |
| 2827 | cd->cd_flags |= IDE_CD_FLAG_NO_EJECT; |
Bartlomiej Zolnierkiewicz | b8d25de | 2008-02-01 23:09:19 +0100 | [diff] [blame] | 2828 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2829 | /* limit transfer size per interrupt. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2830 | /* a testament to the nice quality of Samsung drives... */ |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2831 | if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2430") || |
| 2832 | !strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-2432")) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2833 | cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2834 | /* the 3231 model does not support the SET_CD_SPEED command */ |
| 2835 | else if (!strcmp(drive->id->model, "SAMSUNG CD-ROM SCR-3231")) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2836 | cd->cd_flags |= IDE_CD_FLAG_NO_SPEED_SELECT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2837 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | if (strcmp (drive->id->model, "V003S0DS") == 0 && |
| 2839 | drive->id->fw_rev[4] == '1' && |
| 2840 | drive->id->fw_rev[6] <= '2') { |
| 2841 | /* Vertos 300. |
| 2842 | Some versions of this drive like to talk BCD. */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2843 | cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD | |
| 2844 | IDE_CD_FLAG_TOCADDR_AS_BCD); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2845 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2846 | else if (strcmp (drive->id->model, "V006E0DS") == 0 && |
| 2847 | drive->id->fw_rev[4] == '1' && |
| 2848 | drive->id->fw_rev[6] <= '2') { |
| 2849 | /* Vertos 600 ESD. */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2850 | cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2851 | } |
| 2852 | else if (strcmp(drive->id->model, "NEC CD-ROM DRIVE:260") == 0 && |
| 2853 | strncmp(drive->id->fw_rev, "1.01", 4) == 0) { /* FIXME */ |
| 2854 | /* Old NEC260 (not R). |
| 2855 | This drive was released before the 1.2 version |
| 2856 | of the spec. */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2857 | cd->cd_flags |= (IDE_CD_FLAG_TOCADDR_AS_BCD | |
| 2858 | IDE_CD_FLAG_NEC260); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2859 | } |
Bartlomiej Zolnierkiewicz | b8d25de | 2008-02-01 23:09:19 +0100 | [diff] [blame] | 2860 | /* |
| 2861 | * Sanyo 3 CD changer uses a non-standard command for CD changing |
| 2862 | * (by default standard ATAPI support for CD changers is used). |
| 2863 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2864 | else if ((strcmp(drive->id->model, "CD-ROM CDR-C3 G") == 0) || |
| 2865 | (strcmp(drive->id->model, "CD-ROM CDR-C3G") == 0) || |
| 2866 | (strcmp(drive->id->model, "CD-ROM CDR_C36") == 0)) { |
| 2867 | /* uses CD in slot 0 when value is set to 3 */ |
| 2868 | cdi->sanyo_slot = 3; |
| 2869 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2870 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2871 | nslots = ide_cdrom_probe_capabilities (drive); |
| 2872 | |
| 2873 | /* |
| 2874 | * set correct block size |
| 2875 | */ |
| 2876 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); |
| 2877 | |
| 2878 | if (drive->autotune == IDE_TUNE_DEFAULT || |
| 2879 | drive->autotune == IDE_TUNE_AUTO) |
| 2880 | drive->dsc_overlap = (drive->next != drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2881 | |
| 2882 | if (ide_cdrom_register(drive, nslots)) { |
| 2883 | printk (KERN_ERR "%s: ide_cdrom_setup failed to register device with the cdrom driver.\n", drive->name); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2884 | cd->devinfo.handle = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2885 | return 1; |
| 2886 | } |
| 2887 | ide_cdrom_add_settings(drive); |
| 2888 | return 0; |
| 2889 | } |
| 2890 | |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 2891 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2892 | static |
| 2893 | sector_t ide_cdrom_capacity (ide_drive_t *drive) |
| 2894 | { |
| 2895 | unsigned long capacity, sectors_per_frame; |
| 2896 | |
| 2897 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) |
| 2898 | return 0; |
| 2899 | |
| 2900 | return capacity * sectors_per_frame; |
| 2901 | } |
Amos Waterland | d97b3214 | 2005-10-30 15:02:10 -0800 | [diff] [blame] | 2902 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2903 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2904 | static void ide_cd_remove(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2905 | { |
| 2906 | struct cdrom_info *info = drive->driver_data; |
| 2907 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2908 | ide_proc_unregister_driver(drive, info->driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2909 | |
| 2910 | del_gendisk(info->disk); |
| 2911 | |
| 2912 | ide_cd_put(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2913 | } |
| 2914 | |
| 2915 | static void ide_cd_release(struct kref *kref) |
| 2916 | { |
| 2917 | struct cdrom_info *info = to_ide_cd(kref); |
| 2918 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 2919 | ide_drive_t *drive = info->drive; |
| 2920 | struct gendisk *g = info->disk; |
| 2921 | |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 2922 | kfree(info->buffer); |
| 2923 | kfree(info->toc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2924 | if (devinfo->handle == drive && unregister_cdrom(devinfo)) |
| 2925 | printk(KERN_ERR "%s: %s failed to unregister device from the cdrom " |
| 2926 | "driver.\n", __FUNCTION__, drive->name); |
| 2927 | drive->dsc_overlap = 0; |
| 2928 | drive->driver_data = NULL; |
| 2929 | blk_queue_prep_rq(drive->queue, NULL); |
| 2930 | g->private_data = NULL; |
| 2931 | put_disk(g); |
| 2932 | kfree(info); |
| 2933 | } |
| 2934 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2935 | static int ide_cd_probe(ide_drive_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2936 | |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 2937 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2938 | static int proc_idecd_read_capacity |
| 2939 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
| 2940 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2941 | ide_drive_t *drive = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2942 | int len; |
| 2943 | |
| 2944 | len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive)); |
| 2945 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
| 2946 | } |
| 2947 | |
| 2948 | static ide_proc_entry_t idecd_proc[] = { |
| 2949 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, |
| 2950 | { NULL, 0, NULL, NULL } |
| 2951 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2952 | #endif |
| 2953 | |
| 2954 | static ide_driver_t ide_cdrom_driver = { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2955 | .gen_driver = { |
Laurent Riffard | 4ef3b8f | 2005-11-18 22:15:40 +0100 | [diff] [blame] | 2956 | .owner = THIS_MODULE, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2957 | .name = "ide-cdrom", |
| 2958 | .bus = &ide_bus_type, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2959 | }, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2960 | .probe = ide_cd_probe, |
| 2961 | .remove = ide_cd_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2962 | .version = IDECD_VERSION, |
| 2963 | .media = ide_cdrom, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2964 | .supports_dsc_overlap = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2965 | .do_request = ide_do_rw_cdrom, |
| 2966 | .end_request = ide_end_request, |
| 2967 | .error = __ide_error, |
| 2968 | .abort = __ide_abort, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2969 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2970 | .proc = idecd_proc, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2971 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2972 | }; |
| 2973 | |
| 2974 | static int idecd_open(struct inode * inode, struct file * file) |
| 2975 | { |
| 2976 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 2977 | struct cdrom_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | int rc = -ENOMEM; |
| 2979 | |
| 2980 | if (!(info = ide_cd_get(disk))) |
| 2981 | return -ENXIO; |
| 2982 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2983 | if (!info->buffer) |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 2984 | info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT); |
| 2985 | |
| 2986 | if (info->buffer) |
| 2987 | rc = cdrom_open(&info->devinfo, inode, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2988 | |
| 2989 | if (rc < 0) |
| 2990 | ide_cd_put(info); |
| 2991 | |
| 2992 | return rc; |
| 2993 | } |
| 2994 | |
| 2995 | static int idecd_release(struct inode * inode, struct file * file) |
| 2996 | { |
| 2997 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 2998 | struct cdrom_info *info = ide_cd_g(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2999 | |
| 3000 | cdrom_release (&info->devinfo, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3001 | |
| 3002 | ide_cd_put(info); |
| 3003 | |
| 3004 | return 0; |
| 3005 | } |
| 3006 | |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 3007 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
| 3008 | { |
| 3009 | struct packet_command cgc; |
| 3010 | char buffer[16]; |
| 3011 | int stat; |
| 3012 | char spindown; |
| 3013 | |
| 3014 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) |
| 3015 | return -EFAULT; |
| 3016 | |
| 3017 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 3018 | |
| 3019 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); |
| 3020 | if (stat) |
| 3021 | return stat; |
| 3022 | |
| 3023 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); |
| 3024 | return cdrom_mode_select(cdi, &cgc); |
| 3025 | } |
| 3026 | |
| 3027 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
| 3028 | { |
| 3029 | struct packet_command cgc; |
| 3030 | char buffer[16]; |
| 3031 | int stat; |
| 3032 | char spindown; |
| 3033 | |
| 3034 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 3035 | |
| 3036 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); |
| 3037 | if (stat) |
| 3038 | return stat; |
| 3039 | |
| 3040 | spindown = buffer[11] & 0x0f; |
| 3041 | if (copy_to_user((void __user *)arg, &spindown, sizeof (char))) |
| 3042 | return -EFAULT; |
| 3043 | return 0; |
| 3044 | } |
| 3045 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3046 | static int idecd_ioctl (struct inode *inode, struct file *file, |
| 3047 | unsigned int cmd, unsigned long arg) |
| 3048 | { |
| 3049 | struct block_device *bdev = inode->i_bdev; |
| 3050 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); |
| 3051 | int err; |
| 3052 | |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 3053 | switch (cmd) { |
| 3054 | case CDROMSETSPINDOWN: |
| 3055 | return idecd_set_spindown(&info->devinfo, arg); |
| 3056 | case CDROMGETSPINDOWN: |
| 3057 | return idecd_get_spindown(&info->devinfo, arg); |
| 3058 | default: |
| 3059 | break; |
| 3060 | } |
| 3061 | |
| 3062 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3063 | if (err == -EINVAL) |
| 3064 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); |
| 3065 | |
| 3066 | return err; |
| 3067 | } |
| 3068 | |
| 3069 | static int idecd_media_changed(struct gendisk *disk) |
| 3070 | { |
| 3071 | struct cdrom_info *info = ide_cd_g(disk); |
| 3072 | return cdrom_media_changed(&info->devinfo); |
| 3073 | } |
| 3074 | |
| 3075 | static int idecd_revalidate_disk(struct gendisk *disk) |
| 3076 | { |
| 3077 | struct cdrom_info *info = ide_cd_g(disk); |
| 3078 | struct request_sense sense; |
| 3079 | cdrom_read_toc(info->drive, &sense); |
| 3080 | return 0; |
| 3081 | } |
| 3082 | |
| 3083 | static struct block_device_operations idecd_ops = { |
| 3084 | .owner = THIS_MODULE, |
| 3085 | .open = idecd_open, |
| 3086 | .release = idecd_release, |
| 3087 | .ioctl = idecd_ioctl, |
| 3088 | .media_changed = idecd_media_changed, |
| 3089 | .revalidate_disk= idecd_revalidate_disk |
| 3090 | }; |
| 3091 | |
| 3092 | /* options */ |
| 3093 | static char *ignore = NULL; |
| 3094 | |
| 3095 | module_param(ignore, charp, 0400); |
| 3096 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); |
| 3097 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 3098 | static int ide_cd_probe(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3099 | { |
| 3100 | struct cdrom_info *info; |
| 3101 | struct gendisk *g; |
| 3102 | struct request_sense sense; |
| 3103 | |
| 3104 | if (!strstr("ide-cdrom", drive->driver_req)) |
| 3105 | goto failed; |
| 3106 | if (!drive->present) |
| 3107 | goto failed; |
| 3108 | if (drive->media != ide_cdrom && drive->media != ide_optical) |
| 3109 | goto failed; |
| 3110 | /* skip drives that we were told to ignore */ |
| 3111 | if (ignore != NULL) { |
| 3112 | if (strstr(ignore, drive->name)) { |
| 3113 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); |
| 3114 | goto failed; |
| 3115 | } |
| 3116 | } |
| 3117 | if (drive->scsi) { |
| 3118 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); |
| 3119 | goto failed; |
| 3120 | } |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 3121 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3122 | if (info == NULL) { |
| 3123 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name); |
| 3124 | goto failed; |
| 3125 | } |
| 3126 | |
| 3127 | g = alloc_disk(1 << PARTN_BITS); |
| 3128 | if (!g) |
| 3129 | goto out_free_cd; |
| 3130 | |
| 3131 | ide_init_disk(g, drive); |
| 3132 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 3133 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3134 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3135 | kref_init(&info->kref); |
| 3136 | |
| 3137 | info->drive = drive; |
| 3138 | info->driver = &ide_cdrom_driver; |
| 3139 | info->disk = g; |
| 3140 | |
| 3141 | g->private_data = &info->driver; |
| 3142 | |
| 3143 | drive->driver_data = info; |
| 3144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3145 | g->minors = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3146 | g->driverfs_dev = &drive->gendev; |
| 3147 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; |
| 3148 | if (ide_cdrom_setup(drive)) { |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 3149 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
Bartlomiej Zolnierkiewicz | 05017db | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 3150 | ide_cd_release(&info->kref); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3151 | goto failed; |
| 3152 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3153 | |
| 3154 | cdrom_read_toc(drive, &sense); |
| 3155 | g->fops = &idecd_ops; |
| 3156 | g->flags |= GENHD_FL_REMOVABLE; |
| 3157 | add_disk(g); |
| 3158 | return 0; |
| 3159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3160 | out_free_cd: |
| 3161 | kfree(info); |
| 3162 | failed: |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3163 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3164 | } |
| 3165 | |
| 3166 | static void __exit ide_cdrom_exit(void) |
| 3167 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3168 | driver_unregister(&ide_cdrom_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3169 | } |
Bartlomiej Zolnierkiewicz | 17514e8 | 2005-11-19 22:24:35 +0100 | [diff] [blame] | 3170 | |
| 3171 | static int __init ide_cdrom_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3172 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3173 | return driver_register(&ide_cdrom_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3174 | } |
| 3175 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 3176 | MODULE_ALIAS("ide:*m-cdrom*"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3177 | module_init(ide_cdrom_init); |
| 3178 | module_exit(ide_cdrom_exit); |
| 3179 | MODULE_LICENSE("GPL"); |