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 | |
Bartlomiej Zolnierkiewicz | 972560f | 2008-02-01 23:09:23 +0100 | [diff] [blame^] | 203 | ide_cd_log_error(drive->name, failed_command, sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | /* |
| 207 | * Initialize a ide-cd packet command request |
| 208 | */ |
| 209 | static void cdrom_prepare_request(ide_drive_t *drive, struct request *rq) |
| 210 | { |
| 211 | struct cdrom_info *cd = drive->driver_data; |
| 212 | |
| 213 | ide_init_drive_cmd(rq); |
Jens Axboe | cea2885 | 2006-10-12 15:08:45 +0200 | [diff] [blame] | 214 | rq->cmd_type = REQ_TYPE_ATA_PC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | rq->rq_disk = cd->disk; |
| 216 | } |
| 217 | |
| 218 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, |
| 219 | struct request *failed_command) |
| 220 | { |
| 221 | struct cdrom_info *info = drive->driver_data; |
| 222 | struct request *rq = &info->request_sense_request; |
| 223 | |
| 224 | if (sense == NULL) |
| 225 | sense = &info->sense_data; |
| 226 | |
| 227 | /* stuff the sense request in front of our current request */ |
| 228 | cdrom_prepare_request(drive, rq); |
| 229 | |
| 230 | rq->data = sense; |
| 231 | rq->cmd[0] = GPCMD_REQUEST_SENSE; |
| 232 | rq->cmd[4] = rq->data_len = 18; |
| 233 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 234 | rq->cmd_type = REQ_TYPE_SENSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | |
| 236 | /* NOTE! Save the failed command in "rq->buffer" */ |
| 237 | rq->buffer = (void *) failed_command; |
| 238 | |
| 239 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); |
| 240 | } |
| 241 | |
| 242 | static void cdrom_end_request (ide_drive_t *drive, int uptodate) |
| 243 | { |
| 244 | struct request *rq = HWGROUP(drive)->rq; |
| 245 | int nsectors = rq->hard_cur_sectors; |
| 246 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 247 | if (blk_sense_request(rq) && uptodate) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | /* |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 249 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
| 250 | * failed request |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | */ |
| 252 | struct request *failed = (struct request *) rq->buffer; |
| 253 | struct cdrom_info *info = drive->driver_data; |
| 254 | void *sense = &info->sense_data; |
| 255 | unsigned long flags; |
| 256 | |
| 257 | if (failed) { |
| 258 | if (failed->sense) { |
| 259 | sense = failed->sense; |
| 260 | failed->sense_len = rq->sense_len; |
| 261 | } |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 262 | cdrom_analyze_sense_data(drive, failed, sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | /* |
| 264 | * now end failed request |
| 265 | */ |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 266 | if (blk_fs_request(failed)) { |
| 267 | if (ide_end_dequeued_request(drive, failed, 0, |
| 268 | failed->hard_nr_sectors)) |
| 269 | BUG(); |
| 270 | } else { |
| 271 | spin_lock_irqsave(&ide_lock, flags); |
Kiyoshi Ueda | 5e36bb6 | 2008-01-28 10:34:20 +0100 | [diff] [blame] | 272 | if (__blk_end_request(failed, -EIO, |
| 273 | failed->data_len)) |
| 274 | BUG(); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 275 | spin_unlock_irqrestore(&ide_lock, flags); |
| 276 | } |
| 277 | } else |
| 278 | cdrom_analyze_sense_data(drive, NULL, sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | } |
| 280 | |
| 281 | if (!rq->current_nr_sectors && blk_fs_request(rq)) |
| 282 | uptodate = 1; |
| 283 | /* make sure it's fully ended */ |
| 284 | if (blk_pc_request(rq)) |
| 285 | nsectors = (rq->data_len + 511) >> 9; |
| 286 | if (!nsectors) |
| 287 | nsectors = 1; |
| 288 | |
| 289 | ide_end_request(drive, uptodate, nsectors); |
| 290 | } |
| 291 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 292 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 stat) |
| 293 | { |
| 294 | if (stat & 0x80) |
| 295 | return; |
| 296 | ide_dump_status(drive, msg, stat); |
| 297 | } |
| 298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | /* Returns 0 if the request should be continued. |
| 300 | Returns 1 if the request was ended. */ |
| 301 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) |
| 302 | { |
| 303 | struct request *rq = HWGROUP(drive)->rq; |
| 304 | int stat, err, sense_key; |
| 305 | |
| 306 | /* Check for errors. */ |
| 307 | stat = HWIF(drive)->INB(IDE_STATUS_REG); |
| 308 | if (stat_ret) |
| 309 | *stat_ret = stat; |
| 310 | |
| 311 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) |
| 312 | return 0; |
| 313 | |
| 314 | /* Get the IDE error register. */ |
| 315 | err = HWIF(drive)->INB(IDE_ERROR_REG); |
| 316 | sense_key = err >> 4; |
| 317 | |
| 318 | if (rq == NULL) { |
| 319 | printk("%s: missing rq in cdrom_decode_status\n", drive->name); |
| 320 | return 1; |
| 321 | } |
| 322 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 323 | if (blk_sense_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | /* We got an error trying to get sense info |
| 325 | from the drive (probably while trying |
| 326 | to recover from a former error). Just give up. */ |
| 327 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 328 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | cdrom_end_request(drive, 0); |
| 330 | ide_error(drive, "request sense failure", stat); |
| 331 | return 1; |
| 332 | |
Jens Axboe | 8770c01 | 2006-10-12 17:24:52 +0200 | [diff] [blame] | 333 | } 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] | 334 | /* All other functions, except for READ. */ |
| 335 | unsigned long flags; |
| 336 | |
| 337 | /* |
| 338 | * if we have an error, pass back CHECK_CONDITION as the |
| 339 | * scsi status byte |
| 340 | */ |
Jens Axboe | b715673 | 2006-11-13 18:05:02 +0100 | [diff] [blame] | 341 | if (blk_pc_request(rq) && !rq->errors) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | rq->errors = SAM_STAT_CHECK_CONDITION; |
| 343 | |
| 344 | /* Check for tray open. */ |
| 345 | if (sense_key == NOT_READY) { |
| 346 | cdrom_saw_media_change (drive); |
| 347 | } else if (sense_key == UNIT_ATTENTION) { |
| 348 | /* Check for media change. */ |
| 349 | cdrom_saw_media_change (drive); |
| 350 | /*printk("%s: media changed\n",drive->name);*/ |
| 351 | return 0; |
Stuart Hayes | 76ca1af | 2007-04-10 22:38:43 +0200 | [diff] [blame] | 352 | } else if ((sense_key == ILLEGAL_REQUEST) && |
| 353 | (rq->cmd[0] == GPCMD_START_STOP_UNIT)) { |
| 354 | /* |
| 355 | * Don't print error message for this condition-- |
| 356 | * SFF8090i indicates that 5/24/00 is the correct |
| 357 | * response to a request to close the tray if the |
| 358 | * drive doesn't have that capability. |
| 359 | * cdrom_log_sense() knows this! |
| 360 | */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 361 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | /* Otherwise, print an error. */ |
| 363 | ide_dump_status(drive, "packet command error", stat); |
| 364 | } |
| 365 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 366 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | |
| 368 | /* |
| 369 | * instead of playing games with moving completions around, |
| 370 | * remove failed request completely and end it when the |
| 371 | * request sense has completed |
| 372 | */ |
| 373 | if (stat & ERR_STAT) { |
| 374 | spin_lock_irqsave(&ide_lock, flags); |
| 375 | blkdev_dequeue_request(rq); |
| 376 | HWGROUP(drive)->rq = NULL; |
| 377 | spin_unlock_irqrestore(&ide_lock, flags); |
| 378 | |
| 379 | cdrom_queue_request_sense(drive, rq->sense, rq); |
| 380 | } else |
| 381 | cdrom_end_request(drive, 0); |
| 382 | |
| 383 | } else if (blk_fs_request(rq)) { |
| 384 | int do_end_request = 0; |
| 385 | |
| 386 | /* Handle errors from READ and WRITE requests. */ |
| 387 | |
| 388 | if (blk_noretry_request(rq)) |
| 389 | do_end_request = 1; |
| 390 | |
| 391 | if (sense_key == NOT_READY) { |
| 392 | /* Tray open. */ |
| 393 | if (rq_data_dir(rq) == READ) { |
| 394 | cdrom_saw_media_change (drive); |
| 395 | |
| 396 | /* Fail the request. */ |
| 397 | printk ("%s: tray open\n", drive->name); |
| 398 | do_end_request = 1; |
| 399 | } else { |
| 400 | struct cdrom_info *info = drive->driver_data; |
| 401 | |
| 402 | /* allow the drive 5 seconds to recover, some |
| 403 | * devices will return this error while flushing |
| 404 | * data from cache */ |
| 405 | if (!rq->errors) |
| 406 | info->write_timeout = jiffies + ATAPI_WAIT_WRITE_BUSY; |
| 407 | rq->errors = 1; |
| 408 | if (time_after(jiffies, info->write_timeout)) |
| 409 | do_end_request = 1; |
| 410 | else { |
| 411 | unsigned long flags; |
| 412 | |
| 413 | /* |
| 414 | * take a breather relying on the |
| 415 | * unplug timer to kick us again |
| 416 | */ |
| 417 | spin_lock_irqsave(&ide_lock, flags); |
| 418 | blk_plug_device(drive->queue); |
| 419 | spin_unlock_irqrestore(&ide_lock,flags); |
| 420 | return 1; |
| 421 | } |
| 422 | } |
| 423 | } else if (sense_key == UNIT_ATTENTION) { |
| 424 | /* Media change. */ |
| 425 | cdrom_saw_media_change (drive); |
| 426 | |
| 427 | /* Arrange to retry the request. |
| 428 | But be sure to give up if we've retried |
| 429 | too many times. */ |
| 430 | if (++rq->errors > ERROR_MAX) |
| 431 | do_end_request = 1; |
| 432 | } else if (sense_key == ILLEGAL_REQUEST || |
| 433 | sense_key == DATA_PROTECT) { |
| 434 | /* No point in retrying after an illegal |
| 435 | request or data protect error.*/ |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 436 | ide_dump_status_no_sense (drive, "command error", stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | do_end_request = 1; |
| 438 | } else if (sense_key == MEDIUM_ERROR) { |
| 439 | /* No point in re-trying a zillion times on a bad |
| 440 | * sector... If we got here the error is not correctable */ |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 441 | ide_dump_status_no_sense (drive, "media error (bad sector)", stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | do_end_request = 1; |
| 443 | } else if (sense_key == BLANK_CHECK) { |
| 444 | /* Disk appears blank ?? */ |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 445 | ide_dump_status_no_sense (drive, "media error (blank)", stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | do_end_request = 1; |
| 447 | } else if ((err & ~ABRT_ERR) != 0) { |
| 448 | /* Go to the default handler |
| 449 | for other errors. */ |
| 450 | ide_error(drive, "cdrom_decode_status", stat); |
| 451 | return 1; |
| 452 | } else if ((++rq->errors > ERROR_MAX)) { |
| 453 | /* We've racked up too many retries. Abort. */ |
| 454 | do_end_request = 1; |
| 455 | } |
| 456 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 457 | /* End a request through request sense analysis when we have |
| 458 | sense data. We need this in order to perform end of media |
| 459 | processing */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 461 | if (do_end_request) { |
| 462 | if (stat & ERR_STAT) { |
| 463 | unsigned long flags; |
| 464 | spin_lock_irqsave(&ide_lock, flags); |
| 465 | blkdev_dequeue_request(rq); |
| 466 | HWGROUP(drive)->rq = NULL; |
| 467 | spin_unlock_irqrestore(&ide_lock, flags); |
| 468 | |
| 469 | cdrom_queue_request_sense(drive, rq->sense, rq); |
| 470 | } else |
| 471 | cdrom_end_request(drive, 0); |
| 472 | } else { |
| 473 | /* If we got a CHECK_CONDITION status, |
| 474 | queue a request sense command. */ |
| 475 | if (stat & ERR_STAT) |
| 476 | cdrom_queue_request_sense(drive, NULL, NULL); |
| 477 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | } else { |
| 479 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); |
| 480 | cdrom_end_request(drive, 0); |
| 481 | } |
| 482 | |
| 483 | /* Retry, or handle the next request. */ |
| 484 | return 1; |
| 485 | } |
| 486 | |
| 487 | static int cdrom_timer_expiry(ide_drive_t *drive) |
| 488 | { |
| 489 | struct request *rq = HWGROUP(drive)->rq; |
| 490 | unsigned long wait = 0; |
| 491 | |
| 492 | /* |
| 493 | * Some commands are *slow* and normally take a long time to |
| 494 | * complete. Usually we can use the ATAPI "disconnect" to bypass |
| 495 | * this, but not all commands/drives support that. Let |
| 496 | * ide_timer_expiry keep polling us for these. |
| 497 | */ |
| 498 | switch (rq->cmd[0]) { |
| 499 | case GPCMD_BLANK: |
| 500 | case GPCMD_FORMAT_UNIT: |
| 501 | case GPCMD_RESERVE_RZONE_TRACK: |
| 502 | case GPCMD_CLOSE_TRACK: |
| 503 | case GPCMD_FLUSH_CACHE: |
| 504 | wait = ATAPI_WAIT_PC; |
| 505 | break; |
| 506 | default: |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 507 | if (!(rq->cmd_flags & REQ_QUIET)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", rq->cmd[0]); |
| 509 | wait = 0; |
| 510 | break; |
| 511 | } |
| 512 | return wait; |
| 513 | } |
| 514 | |
| 515 | /* Set up the device registers for transferring a packet command on DEV, |
| 516 | expecting to later transfer XFERLEN bytes. HANDLER is the routine |
| 517 | which actually transfers the command to the drive. If this is a |
| 518 | drq_interrupt device, this routine will arrange for HANDLER to be |
| 519 | called when the interrupt from the drive arrives. Otherwise, HANDLER |
| 520 | will be called immediately after the drive is prepared for the transfer. */ |
| 521 | |
| 522 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, |
| 523 | int xferlen, |
| 524 | ide_handler_t *handler) |
| 525 | { |
| 526 | ide_startstop_t startstop; |
| 527 | struct cdrom_info *info = drive->driver_data; |
| 528 | ide_hwif_t *hwif = drive->hwif; |
| 529 | |
| 530 | /* Wait for the controller to be idle. */ |
| 531 | if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) |
| 532 | return startstop; |
| 533 | |
Bartlomiej Zolnierkiewicz | 3a6a354 | 2008-01-25 22:17:13 +0100 | [diff] [blame] | 534 | /* FIXME: for Virtual DMA we must check harder */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | if (info->dma) |
| 536 | info->dma = !hwif->dma_setup(drive); |
| 537 | |
| 538 | /* Set up the controller registers. */ |
Bartlomiej Zolnierkiewicz | 2fc5738 | 2008-01-25 22:17:13 +0100 | [diff] [blame] | 539 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL | |
| 540 | IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 541 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 542 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
Albert Lee | f0dd871 | 2007-02-17 02:40:21 +0100 | [diff] [blame] | 543 | /* waiting for CDB interrupt, not DMA yet. */ |
| 544 | if (info->dma) |
| 545 | drive->waiting_for_dma = 0; |
| 546 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | /* packet command */ |
| 548 | ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); |
| 549 | return ide_started; |
| 550 | } else { |
| 551 | unsigned long flags; |
| 552 | |
| 553 | /* packet command */ |
| 554 | spin_lock_irqsave(&ide_lock, flags); |
| 555 | hwif->OUTBSYNC(drive, WIN_PACKETCMD, IDE_COMMAND_REG); |
| 556 | ndelay(400); |
| 557 | spin_unlock_irqrestore(&ide_lock, flags); |
| 558 | |
| 559 | return (*handler) (drive); |
| 560 | } |
| 561 | } |
| 562 | |
| 563 | /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. |
| 564 | The device registers must have already been prepared |
| 565 | by cdrom_start_packet_command. |
| 566 | HANDLER is the interrupt handler to call when the command completes |
| 567 | or there's data ready. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | #define ATAPI_MIN_CDB_BYTES 12 |
| 569 | static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive, |
| 570 | struct request *rq, |
| 571 | ide_handler_t *handler) |
| 572 | { |
| 573 | ide_hwif_t *hwif = drive->hwif; |
| 574 | int cmd_len; |
| 575 | struct cdrom_info *info = drive->driver_data; |
| 576 | ide_startstop_t startstop; |
| 577 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 578 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | /* Here we should have been called after receiving an interrupt |
| 580 | from the device. DRQ should how be set. */ |
| 581 | |
| 582 | /* Check for errors. */ |
| 583 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) |
| 584 | return ide_stopped; |
Albert Lee | f0dd871 | 2007-02-17 02:40:21 +0100 | [diff] [blame] | 585 | |
| 586 | /* Ok, next interrupt will be DMA interrupt. */ |
| 587 | if (info->dma) |
| 588 | drive->waiting_for_dma = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | } else { |
| 590 | /* Otherwise, we must wait for DRQ to get set. */ |
| 591 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
| 592 | BUSY_STAT, WAIT_READY)) |
| 593 | return startstop; |
| 594 | } |
| 595 | |
| 596 | /* Arm the interrupt handler. */ |
| 597 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); |
| 598 | |
| 599 | /* ATAPI commands get padded out to 12 bytes minimum */ |
| 600 | cmd_len = COMMAND_SIZE(rq->cmd[0]); |
| 601 | if (cmd_len < ATAPI_MIN_CDB_BYTES) |
| 602 | cmd_len = ATAPI_MIN_CDB_BYTES; |
| 603 | |
| 604 | /* Send the command to the device. */ |
| 605 | HWIF(drive)->atapi_output_bytes(drive, rq->cmd, cmd_len); |
| 606 | |
| 607 | /* Start the DMA if need be */ |
| 608 | if (info->dma) |
| 609 | hwif->dma_start(drive); |
| 610 | |
| 611 | return ide_started; |
| 612 | } |
| 613 | |
| 614 | /**************************************************************************** |
| 615 | * Block read functions. |
| 616 | */ |
| 617 | |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 618 | typedef void (xfer_func_t)(ide_drive_t *, void *, u32); |
| 619 | |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 620 | static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len) |
| 621 | { |
| 622 | while (len > 0) { |
| 623 | int dum = 0; |
| 624 | xf(drive, &dum, sizeof(dum)); |
| 625 | len -= sizeof(dum); |
| 626 | } |
| 627 | } |
| 628 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | /* |
| 630 | * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector |
| 631 | * buffer. Once the first sector is added, any subsequent sectors are |
| 632 | * assumed to be continuous (until the buffer is cleared). For the first |
| 633 | * sector added, SECTOR is its sector number. (SECTOR is then ignored until |
| 634 | * the buffer is cleared.) |
| 635 | */ |
| 636 | static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector, |
| 637 | int sectors_to_transfer) |
| 638 | { |
| 639 | struct cdrom_info *info = drive->driver_data; |
| 640 | |
| 641 | /* Number of sectors to read into the buffer. */ |
| 642 | int sectors_to_buffer = min_t(int, sectors_to_transfer, |
| 643 | (SECTOR_BUFFER_SIZE >> SECTOR_BITS) - |
| 644 | info->nsectors_buffered); |
| 645 | |
| 646 | char *dest; |
| 647 | |
| 648 | /* If we couldn't get a buffer, don't try to buffer anything... */ |
| 649 | if (info->buffer == NULL) |
| 650 | sectors_to_buffer = 0; |
| 651 | |
| 652 | /* If this is the first sector in the buffer, remember its number. */ |
| 653 | if (info->nsectors_buffered == 0) |
| 654 | info->sector_buffered = sector; |
| 655 | |
| 656 | /* Read the data into the buffer. */ |
| 657 | dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE; |
| 658 | while (sectors_to_buffer > 0) { |
| 659 | HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE); |
| 660 | --sectors_to_buffer; |
| 661 | --sectors_to_transfer; |
| 662 | ++info->nsectors_buffered; |
| 663 | dest += SECTOR_SIZE; |
| 664 | } |
| 665 | |
| 666 | /* Throw away any remaining data. */ |
| 667 | while (sectors_to_transfer > 0) { |
| 668 | static char dum[SECTOR_SIZE]; |
| 669 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); |
| 670 | --sectors_to_transfer; |
| 671 | } |
| 672 | } |
| 673 | |
| 674 | /* |
| 675 | * Check the contents of the interrupt reason register from the cdrom |
| 676 | * and attempt to recover if there are problems. Returns 0 if everything's |
| 677 | * ok; nonzero if the request has been terminated. |
| 678 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 679 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason) |
| 681 | { |
| 682 | if (ireason == 2) |
| 683 | return 0; |
| 684 | else if (ireason == 0) { |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 685 | ide_hwif_t *hwif = drive->hwif; |
| 686 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | /* Whoops... The drive is expecting to receive data from us! */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 688 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
| 689 | drive->name, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | |
| 691 | /* Throw some data at the drive so it doesn't hang |
| 692 | and quit this request. */ |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 693 | ide_cd_pad_transfer(drive, hwif->atapi_output_bytes, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | } else if (ireason == 1) { |
| 695 | /* Some drives (ASUS) seem to tell us that status |
| 696 | * info is available. just get it and ignore. |
| 697 | */ |
| 698 | (void) HWIF(drive)->INB(IDE_STATUS_REG); |
| 699 | return 0; |
| 700 | } else { |
| 701 | /* Drive wants a command packet, or invalid ireason... */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 702 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
| 703 | drive->name, __FUNCTION__, ireason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | } |
| 705 | |
| 706 | cdrom_end_request(drive, 0); |
| 707 | return -1; |
| 708 | } |
| 709 | |
| 710 | /* |
| 711 | * Interrupt routine. Called when a read request has completed. |
| 712 | */ |
| 713 | static ide_startstop_t cdrom_read_intr (ide_drive_t *drive) |
| 714 | { |
| 715 | int stat; |
| 716 | int ireason, len, sectors_to_transfer, nskip; |
| 717 | struct cdrom_info *info = drive->driver_data; |
| 718 | u8 lowcyl = 0, highcyl = 0; |
| 719 | int dma = info->dma, dma_error = 0; |
| 720 | |
| 721 | struct request *rq = HWGROUP(drive)->rq; |
| 722 | |
| 723 | /* |
| 724 | * handle dma case |
| 725 | */ |
| 726 | if (dma) { |
| 727 | info->dma = 0; |
Bartlomiej Zolnierkiewicz | 52ef2ed | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 728 | dma_error = HWIF(drive)->ide_dma_end(drive); |
| 729 | if (dma_error) { |
| 730 | printk(KERN_ERR "%s: DMA read error\n", drive->name); |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 731 | ide_dma_off(drive); |
Bartlomiej Zolnierkiewicz | 52ef2ed | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 732 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | } |
| 734 | |
| 735 | if (cdrom_decode_status(drive, 0, &stat)) |
| 736 | return ide_stopped; |
| 737 | |
| 738 | if (dma) { |
| 739 | if (!dma_error) { |
| 740 | ide_end_request(drive, 1, rq->nr_sectors); |
| 741 | return ide_stopped; |
| 742 | } else |
| 743 | return ide_error(drive, "dma error", stat); |
| 744 | } |
| 745 | |
| 746 | /* Read the interrupt reason and the transfer length. */ |
| 747 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
| 748 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 749 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 750 | |
| 751 | len = lowcyl + (256 * highcyl); |
| 752 | |
| 753 | /* If DRQ is clear, the command has completed. */ |
| 754 | if ((stat & DRQ_STAT) == 0) { |
| 755 | /* If we're not done filling the current buffer, complain. |
| 756 | Otherwise, complete the command normally. */ |
| 757 | if (rq->current_nr_sectors > 0) { |
| 758 | printk (KERN_ERR "%s: cdrom_read_intr: data underrun (%d blocks)\n", |
| 759 | drive->name, rq->current_nr_sectors); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 760 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 761 | cdrom_end_request(drive, 0); |
| 762 | } else |
| 763 | cdrom_end_request(drive, 1); |
| 764 | return ide_stopped; |
| 765 | } |
| 766 | |
| 767 | /* Check that the drive is expecting to do the same thing we are. */ |
| 768 | if (cdrom_read_check_ireason (drive, len, ireason)) |
| 769 | return ide_stopped; |
| 770 | |
| 771 | /* Assume that the drive will always provide data in multiples |
| 772 | of at least SECTOR_SIZE, as it gets hairy to keep track |
| 773 | of the transfers otherwise. */ |
| 774 | if ((len % SECTOR_SIZE) != 0) { |
| 775 | printk (KERN_ERR "%s: cdrom_read_intr: Bad transfer size %d\n", |
| 776 | drive->name, len); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 777 | if (info->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | printk (KERN_ERR " This drive is not supported by this version of the driver\n"); |
| 779 | else { |
| 780 | printk (KERN_ERR " Trying to limit transfer sizes\n"); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 781 | info->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | } |
| 783 | cdrom_end_request(drive, 0); |
| 784 | return ide_stopped; |
| 785 | } |
| 786 | |
| 787 | /* The number of sectors we need to read from the drive. */ |
| 788 | sectors_to_transfer = len / SECTOR_SIZE; |
| 789 | |
| 790 | /* First, figure out if we need to bit-bucket |
| 791 | any of the leading sectors. */ |
| 792 | nskip = min_t(int, rq->current_nr_sectors - bio_cur_sectors(rq->bio), sectors_to_transfer); |
| 793 | |
| 794 | while (nskip > 0) { |
| 795 | /* We need to throw away a sector. */ |
| 796 | static char dum[SECTOR_SIZE]; |
| 797 | HWIF(drive)->atapi_input_bytes(drive, dum, sizeof (dum)); |
| 798 | |
| 799 | --rq->current_nr_sectors; |
| 800 | --nskip; |
| 801 | --sectors_to_transfer; |
| 802 | } |
| 803 | |
| 804 | /* Now loop while we still have data to read from the drive. */ |
| 805 | while (sectors_to_transfer > 0) { |
| 806 | int this_transfer; |
| 807 | |
| 808 | /* If we've filled the present buffer but there's another |
| 809 | chained buffer after it, move on. */ |
| 810 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) |
| 811 | cdrom_end_request(drive, 1); |
| 812 | |
| 813 | /* If the buffers are full, cache the rest of the data in our |
| 814 | internal buffer. */ |
| 815 | if (rq->current_nr_sectors == 0) { |
| 816 | cdrom_buffer_sectors(drive, rq->sector, sectors_to_transfer); |
| 817 | sectors_to_transfer = 0; |
| 818 | } else { |
| 819 | /* Transfer data to the buffers. |
| 820 | Figure out how many sectors we can transfer |
| 821 | to the current buffer. */ |
| 822 | this_transfer = min_t(int, sectors_to_transfer, |
| 823 | rq->current_nr_sectors); |
| 824 | |
| 825 | /* Read this_transfer sectors |
| 826 | into the current buffer. */ |
| 827 | while (this_transfer > 0) { |
| 828 | HWIF(drive)->atapi_input_bytes(drive, rq->buffer, SECTOR_SIZE); |
| 829 | rq->buffer += SECTOR_SIZE; |
| 830 | --rq->nr_sectors; |
| 831 | --rq->current_nr_sectors; |
| 832 | ++rq->sector; |
| 833 | --this_transfer; |
| 834 | --sectors_to_transfer; |
| 835 | } |
| 836 | } |
| 837 | } |
| 838 | |
| 839 | /* Done moving data! Wait for another interrupt. */ |
| 840 | ide_set_handler(drive, &cdrom_read_intr, ATAPI_WAIT_PC, NULL); |
| 841 | return ide_started; |
| 842 | } |
| 843 | |
| 844 | /* |
| 845 | * Try to satisfy some of the current read request from our cached data. |
| 846 | * Returns nonzero if the request has been completed, zero otherwise. |
| 847 | */ |
| 848 | static int cdrom_read_from_buffer (ide_drive_t *drive) |
| 849 | { |
| 850 | struct cdrom_info *info = drive->driver_data; |
| 851 | struct request *rq = HWGROUP(drive)->rq; |
| 852 | unsigned short sectors_per_frame; |
| 853 | |
| 854 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 855 | |
| 856 | /* Can't do anything if there's no buffer. */ |
| 857 | if (info->buffer == NULL) return 0; |
| 858 | |
| 859 | /* Loop while this request needs data and the next block is present |
| 860 | in our cache. */ |
| 861 | while (rq->nr_sectors > 0 && |
| 862 | rq->sector >= info->sector_buffered && |
| 863 | rq->sector < info->sector_buffered + info->nsectors_buffered) { |
| 864 | if (rq->current_nr_sectors == 0) |
| 865 | cdrom_end_request(drive, 1); |
| 866 | |
| 867 | memcpy (rq->buffer, |
| 868 | info->buffer + |
| 869 | (rq->sector - info->sector_buffered) * SECTOR_SIZE, |
| 870 | SECTOR_SIZE); |
| 871 | rq->buffer += SECTOR_SIZE; |
| 872 | --rq->current_nr_sectors; |
| 873 | --rq->nr_sectors; |
| 874 | ++rq->sector; |
| 875 | } |
| 876 | |
| 877 | /* If we've satisfied the current request, |
| 878 | terminate it successfully. */ |
| 879 | if (rq->nr_sectors == 0) { |
| 880 | cdrom_end_request(drive, 1); |
| 881 | return -1; |
| 882 | } |
| 883 | |
| 884 | /* Move on to the next buffer if needed. */ |
| 885 | if (rq->current_nr_sectors == 0) |
| 886 | cdrom_end_request(drive, 1); |
| 887 | |
| 888 | /* If this condition does not hold, then the kluge i use to |
| 889 | represent the number of sectors to skip at the start of a transfer |
| 890 | will fail. I think that this will never happen, but let's be |
| 891 | paranoid and check. */ |
| 892 | if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) && |
| 893 | (rq->sector & (sectors_per_frame - 1))) { |
| 894 | printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n", |
| 895 | drive->name, (long)rq->sector); |
| 896 | cdrom_end_request(drive, 0); |
| 897 | return -1; |
| 898 | } |
| 899 | |
| 900 | return 0; |
| 901 | } |
| 902 | |
| 903 | /* |
| 904 | * Routine to send a read packet command to the drive. |
| 905 | * This is usually called directly from cdrom_start_read. |
| 906 | * However, for drq_interrupt devices, it is called from an interrupt |
| 907 | * when the drive is ready to accept the command. |
| 908 | */ |
| 909 | static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive) |
| 910 | { |
| 911 | struct request *rq = HWGROUP(drive)->rq; |
| 912 | unsigned short sectors_per_frame; |
| 913 | int nskip; |
| 914 | |
| 915 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 916 | |
| 917 | /* If the requested sector doesn't start on a cdrom block boundary, |
| 918 | we must adjust the start of the transfer so that it does, |
| 919 | and remember to skip the first few sectors. |
| 920 | If the CURRENT_NR_SECTORS field is larger than the size |
| 921 | of the buffer, it will mean that we're to skip a number |
| 922 | of sectors equal to the amount by which CURRENT_NR_SECTORS |
| 923 | is larger than the buffer size. */ |
| 924 | nskip = rq->sector & (sectors_per_frame - 1); |
| 925 | if (nskip > 0) { |
| 926 | /* Sanity check... */ |
| 927 | if (rq->current_nr_sectors != bio_cur_sectors(rq->bio) && |
| 928 | (rq->sector & (sectors_per_frame - 1))) { |
| 929 | printk(KERN_ERR "%s: cdrom_start_read_continuation: buffer botch (%u)\n", |
| 930 | drive->name, rq->current_nr_sectors); |
| 931 | cdrom_end_request(drive, 0); |
| 932 | return ide_stopped; |
| 933 | } |
| 934 | rq->current_nr_sectors += nskip; |
| 935 | } |
| 936 | |
| 937 | /* Set up the command */ |
| 938 | rq->timeout = ATAPI_WAIT_PC; |
| 939 | |
| 940 | /* Send the command to the drive and return. */ |
| 941 | return cdrom_transfer_packet_command(drive, rq, &cdrom_read_intr); |
| 942 | } |
| 943 | |
| 944 | |
| 945 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ |
| 946 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ |
| 947 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ |
| 948 | |
| 949 | static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive) |
| 950 | { |
| 951 | struct cdrom_info *info = drive->driver_data; |
| 952 | int stat; |
| 953 | static int retry = 10; |
| 954 | |
| 955 | if (cdrom_decode_status(drive, 0, &stat)) |
| 956 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 957 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 958 | info->cd_flags |= IDE_CD_FLAG_SEEKING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | |
| 960 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { |
| 961 | if (--retry == 0) { |
| 962 | /* |
| 963 | * this condition is far too common, to bother |
| 964 | * users about it |
| 965 | */ |
| 966 | /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ |
| 967 | drive->dsc_overlap = 0; |
| 968 | } |
| 969 | } |
| 970 | return ide_stopped; |
| 971 | } |
| 972 | |
| 973 | static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive) |
| 974 | { |
| 975 | struct request *rq = HWGROUP(drive)->rq; |
| 976 | sector_t frame = rq->sector; |
| 977 | |
| 978 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); |
| 979 | |
| 980 | memset(rq->cmd, 0, sizeof(rq->cmd)); |
| 981 | rq->cmd[0] = GPCMD_SEEK; |
| 982 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); |
| 983 | |
| 984 | rq->timeout = ATAPI_WAIT_PC; |
| 985 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); |
| 986 | } |
| 987 | |
| 988 | static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block) |
| 989 | { |
| 990 | struct cdrom_info *info = drive->driver_data; |
| 991 | |
| 992 | info->dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | info->start_seek = jiffies; |
| 994 | return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); |
| 995 | } |
| 996 | |
| 997 | /* Fix up a possibly partially-processed request so that we can |
| 998 | start it over entirely, or even put it back on the request queue. */ |
| 999 | static void restore_request (struct request *rq) |
| 1000 | { |
| 1001 | if (rq->buffer != bio_data(rq->bio)) { |
| 1002 | sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; |
| 1003 | |
| 1004 | rq->buffer = bio_data(rq->bio); |
| 1005 | rq->nr_sectors += n; |
| 1006 | rq->sector -= n; |
| 1007 | } |
| 1008 | rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); |
| 1009 | rq->hard_nr_sectors = rq->nr_sectors; |
| 1010 | rq->hard_sector = rq->sector; |
| 1011 | rq->q->prep_rq_fn(rq->q, rq); |
| 1012 | } |
| 1013 | |
| 1014 | /* |
| 1015 | * Start a read request from the CD-ROM. |
| 1016 | */ |
| 1017 | static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block) |
| 1018 | { |
| 1019 | struct cdrom_info *info = drive->driver_data; |
| 1020 | struct request *rq = HWGROUP(drive)->rq; |
| 1021 | unsigned short sectors_per_frame; |
| 1022 | |
| 1023 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1024 | |
| 1025 | /* We may be retrying this request after an error. Fix up |
| 1026 | any weirdness which might be present in the request packet. */ |
| 1027 | restore_request(rq); |
| 1028 | |
| 1029 | /* Satisfy whatever we can of this request from our cached sector. */ |
| 1030 | if (cdrom_read_from_buffer(drive)) |
| 1031 | return ide_stopped; |
| 1032 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | /* Clear the local sector buffer. */ |
| 1034 | info->nsectors_buffered = 0; |
| 1035 | |
| 1036 | /* use dma, if possible. */ |
| 1037 | info->dma = drive->using_dma; |
| 1038 | if ((rq->sector & (sectors_per_frame - 1)) || |
| 1039 | (rq->nr_sectors & (sectors_per_frame - 1))) |
| 1040 | info->dma = 0; |
| 1041 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | /* Start sending the read request to the drive. */ |
| 1043 | return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation); |
| 1044 | } |
| 1045 | |
| 1046 | /**************************************************************************** |
| 1047 | * Execute all other packet commands. |
| 1048 | */ |
| 1049 | |
| 1050 | /* Interrupt routine for packet command completion. */ |
| 1051 | static ide_startstop_t cdrom_pc_intr (ide_drive_t *drive) |
| 1052 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1053 | struct request *rq = HWGROUP(drive)->rq; |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1054 | xfer_func_t *xferfunc = NULL; |
| 1055 | int stat, ireason, len, thislen, write; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | u8 lowcyl = 0, highcyl = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | |
| 1058 | /* Check for errors. */ |
| 1059 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1060 | return ide_stopped; |
| 1061 | |
| 1062 | /* Read the interrupt reason and the transfer length. */ |
Bartlomiej Zolnierkiewicz | 8606ab0 | 2007-12-24 15:23:44 +0100 | [diff] [blame] | 1063 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1064 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1065 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1066 | |
| 1067 | len = lowcyl + (256 * highcyl); |
| 1068 | |
| 1069 | /* If DRQ is clear, the command has completed. |
| 1070 | Complain if we still have data left to transfer. */ |
| 1071 | if ((stat & DRQ_STAT) == 0) { |
| 1072 | /* Some of the trailing request sense fields are optional, and |
| 1073 | some drives don't send them. Sigh. */ |
| 1074 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && |
| 1075 | rq->data_len > 0 && |
| 1076 | rq->data_len <= 5) { |
| 1077 | while (rq->data_len > 0) { |
| 1078 | *(unsigned char *)rq->data++ = 0; |
| 1079 | --rq->data_len; |
| 1080 | } |
| 1081 | } |
| 1082 | |
| 1083 | if (rq->data_len == 0) |
| 1084 | cdrom_end_request(drive, 1); |
| 1085 | else { |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1086 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | cdrom_end_request(drive, 0); |
| 1088 | } |
| 1089 | return ide_stopped; |
| 1090 | } |
| 1091 | |
| 1092 | /* Figure out how much data to transfer. */ |
| 1093 | thislen = rq->data_len; |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1094 | if (thislen > len) |
| 1095 | thislen = len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | |
Bartlomiej Zolnierkiewicz | 8606ab0 | 2007-12-24 15:23:44 +0100 | [diff] [blame] | 1097 | if (ireason == 0) { |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1098 | write = 1; |
| 1099 | xferfunc = HWIF(drive)->atapi_output_bytes; |
| 1100 | } else if (ireason == 2) { |
| 1101 | write = 0; |
| 1102 | xferfunc = HWIF(drive)->atapi_input_bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | } |
| 1104 | |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1105 | if (xferfunc) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1106 | if (!rq->data) { |
Bartlomiej Zolnierkiewicz | f1071e6 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1107 | printk(KERN_ERR "%s: confused, missing data\n", |
| 1108 | drive->name); |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1109 | blk_dump_rq_flags(rq, write ? "cdrom_pc_intr, write" |
| 1110 | : "cdrom_pc_intr, read"); |
Bartlomiej Zolnierkiewicz | f1071e6 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1111 | goto pad; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | } |
| 1113 | /* Transfer the data. */ |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1114 | xferfunc(drive, rq->data, thislen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | /* Keep count of how much data we've moved. */ |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1117 | len -= thislen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | rq->data += thislen; |
| 1119 | rq->data_len -= thislen; |
| 1120 | |
Bartlomiej Zolnierkiewicz | 68661c5 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1121 | if (write && blk_sense_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | rq->sense_len += thislen; |
| 1123 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1124 | printk (KERN_ERR "%s: cdrom_pc_intr: The drive " |
Rachita Kothiyal | 1ad5544 | 2006-06-23 02:02:56 -0700 | [diff] [blame] | 1125 | "appears confused (ireason = 0x%02x). " |
| 1126 | "Trying to recover by ending request.\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | drive->name, ireason); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1128 | rq->cmd_flags |= REQ_FAILED; |
Rachita Kothiyal | 1ad5544 | 2006-06-23 02:02:56 -0700 | [diff] [blame] | 1129 | cdrom_end_request(drive, 0); |
| 1130 | return ide_stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | } |
Bartlomiej Zolnierkiewicz | f1071e6 | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1132 | pad: |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1133 | /* |
| 1134 | * If we haven't moved enough data to satisfy the drive, |
| 1135 | * add some padding. |
| 1136 | */ |
| 1137 | if (len > 0) |
| 1138 | ide_cd_pad_transfer(drive, xferfunc, len); |
| 1139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | /* Now we wait for another interrupt. */ |
| 1141 | ide_set_handler(drive, &cdrom_pc_intr, ATAPI_WAIT_PC, cdrom_timer_expiry); |
| 1142 | return ide_started; |
| 1143 | } |
| 1144 | |
| 1145 | static ide_startstop_t cdrom_do_pc_continuation (ide_drive_t *drive) |
| 1146 | { |
| 1147 | struct request *rq = HWGROUP(drive)->rq; |
| 1148 | |
| 1149 | if (!rq->timeout) |
| 1150 | rq->timeout = ATAPI_WAIT_PC; |
| 1151 | |
| 1152 | /* Send the command to the drive and return. */ |
| 1153 | return cdrom_transfer_packet_command(drive, rq, &cdrom_pc_intr); |
| 1154 | } |
| 1155 | |
| 1156 | |
| 1157 | static ide_startstop_t cdrom_do_packet_command (ide_drive_t *drive) |
| 1158 | { |
| 1159 | int len; |
| 1160 | struct request *rq = HWGROUP(drive)->rq; |
| 1161 | struct cdrom_info *info = drive->driver_data; |
| 1162 | |
| 1163 | info->dma = 0; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1164 | rq->cmd_flags &= ~REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1165 | len = rq->data_len; |
| 1166 | |
| 1167 | /* Start sending the command to the drive. */ |
| 1168 | return cdrom_start_packet_command(drive, len, cdrom_do_pc_continuation); |
| 1169 | } |
| 1170 | |
| 1171 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 1172 | 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] | 1173 | { |
| 1174 | struct request_sense sense; |
| 1175 | int retries = 10; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1176 | unsigned int flags = rq->cmd_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | |
| 1178 | if (rq->sense == NULL) |
| 1179 | rq->sense = &sense; |
| 1180 | |
| 1181 | /* Start of retry loop. */ |
| 1182 | do { |
| 1183 | int error; |
| 1184 | unsigned long time = jiffies; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1185 | rq->cmd_flags = flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | |
| 1187 | error = ide_do_drive_cmd(drive, rq, ide_wait); |
| 1188 | time = jiffies - time; |
| 1189 | |
| 1190 | /* FIXME: we should probably abort/retry or something |
| 1191 | * in case of failure */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1192 | if (rq->cmd_flags & REQ_FAILED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | /* The request failed. Retry if it was due to a unit |
| 1194 | attention status |
| 1195 | (usually means media was changed). */ |
| 1196 | struct request_sense *reqbuf = rq->sense; |
| 1197 | |
| 1198 | if (reqbuf->sense_key == UNIT_ATTENTION) |
| 1199 | cdrom_saw_media_change(drive); |
| 1200 | else if (reqbuf->sense_key == NOT_READY && |
| 1201 | reqbuf->asc == 4 && reqbuf->ascq != 4) { |
| 1202 | /* The drive is in the process of loading |
| 1203 | a disk. Retry, but wait a little to give |
| 1204 | the drive time to complete the load. */ |
| 1205 | ssleep(2); |
| 1206 | } else { |
| 1207 | /* Otherwise, don't retry. */ |
| 1208 | retries = 0; |
| 1209 | } |
| 1210 | --retries; |
| 1211 | } |
| 1212 | |
| 1213 | /* End of retry loop. */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1214 | } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | |
| 1216 | /* Return an error if the command failed. */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1217 | return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1218 | } |
| 1219 | |
| 1220 | /* |
| 1221 | * Write handling |
| 1222 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1223 | 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] | 1224 | { |
| 1225 | /* Two notes about IDE interrupt reason here - 0 means that |
| 1226 | * the drive wants to receive data from us, 2 means that |
| 1227 | * the drive is expecting to transfer data to us. |
| 1228 | */ |
| 1229 | if (ireason == 0) |
| 1230 | return 0; |
| 1231 | else if (ireason == 2) { |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1232 | ide_hwif_t *hwif = drive->hwif; |
| 1233 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | /* Whoops... The drive wants to send data. */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1235 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
| 1236 | drive->name, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1238 | ide_cd_pad_transfer(drive, hwif->atapi_input_bytes, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | } else { |
| 1240 | /* Drive wants a command packet, or invalid ireason... */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1241 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
| 1242 | drive->name, __FUNCTION__, ireason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | } |
| 1244 | |
| 1245 | cdrom_end_request(drive, 0); |
| 1246 | return 1; |
| 1247 | } |
| 1248 | |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1249 | /* |
| 1250 | * Called from blk_end_request_callback() after the data of the request |
| 1251 | * is completed and before the request is completed. |
| 1252 | * By returning value '1', blk_end_request_callback() returns immediately |
| 1253 | * without completing the request. |
| 1254 | */ |
| 1255 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) |
| 1256 | { |
| 1257 | return 1; |
| 1258 | } |
| 1259 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1260 | /* |
| 1261 | * best way to deal with dma that is not sector aligned right now... note |
| 1262 | * that in this path we are not using ->data or ->buffer at all. this irs |
| 1263 | * can replace cdrom_pc_intr, cdrom_read_intr, and cdrom_write_intr in the |
| 1264 | * future. |
| 1265 | */ |
| 1266 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
| 1267 | { |
| 1268 | struct cdrom_info *info = drive->driver_data; |
| 1269 | struct request *rq = HWGROUP(drive)->rq; |
| 1270 | int dma_error, dma, stat, ireason, len, thislen; |
| 1271 | u8 lowcyl, highcyl; |
| 1272 | xfer_func_t *xferfunc; |
| 1273 | unsigned long flags; |
| 1274 | |
| 1275 | /* Check for errors. */ |
| 1276 | dma_error = 0; |
| 1277 | dma = info->dma; |
| 1278 | if (dma) { |
| 1279 | info->dma = 0; |
| 1280 | dma_error = HWIF(drive)->ide_dma_end(drive); |
Bartlomiej Zolnierkiewicz | eba15fb | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1281 | if (dma_error) { |
| 1282 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, |
| 1283 | rq_data_dir(rq) ? "write" : "read"); |
| 1284 | ide_dma_off(drive); |
| 1285 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | } |
| 1287 | |
| 1288 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1289 | return ide_stopped; |
| 1290 | |
| 1291 | /* |
| 1292 | * using dma, transfer is complete now |
| 1293 | */ |
| 1294 | if (dma) { |
Bartlomiej Zolnierkiewicz | eba15fb | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1295 | if (dma_error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | return ide_error(drive, "dma error", stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1297 | |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1298 | spin_lock_irqsave(&ide_lock, flags); |
| 1299 | if (__blk_end_request(rq, 0, rq->data_len)) |
| 1300 | BUG(); |
| 1301 | HWGROUP(drive)->rq = NULL; |
| 1302 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1303 | |
| 1304 | return ide_stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | } |
| 1306 | |
| 1307 | /* |
| 1308 | * ok we fall to pio :/ |
| 1309 | */ |
| 1310 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
| 1311 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1312 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1313 | |
| 1314 | len = lowcyl + (256 * highcyl); |
| 1315 | thislen = rq->data_len; |
| 1316 | if (thislen > len) |
| 1317 | thislen = len; |
| 1318 | |
| 1319 | /* |
| 1320 | * If DRQ is clear, the command has completed. |
| 1321 | */ |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1322 | if ((stat & DRQ_STAT) == 0) { |
| 1323 | spin_lock_irqsave(&ide_lock, flags); |
Jens Axboe | 4f4f6c2 | 2008-01-31 13:57:51 +0100 | [diff] [blame] | 1324 | if (__blk_end_request(rq, 0, rq->data_len)) |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1325 | BUG(); |
| 1326 | HWGROUP(drive)->rq = NULL; |
| 1327 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1328 | |
| 1329 | return ide_stopped; |
| 1330 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | |
| 1332 | /* |
| 1333 | * check which way to transfer data |
| 1334 | */ |
| 1335 | if (rq_data_dir(rq) == WRITE) { |
| 1336 | /* |
| 1337 | * write to drive |
| 1338 | */ |
| 1339 | if (cdrom_write_check_ireason(drive, len, ireason)) |
| 1340 | return ide_stopped; |
| 1341 | |
| 1342 | xferfunc = HWIF(drive)->atapi_output_bytes; |
| 1343 | } else { |
| 1344 | /* |
| 1345 | * read from drive |
| 1346 | */ |
| 1347 | if (cdrom_read_check_ireason(drive, len, ireason)) |
| 1348 | return ide_stopped; |
| 1349 | |
| 1350 | xferfunc = HWIF(drive)->atapi_input_bytes; |
| 1351 | } |
| 1352 | |
| 1353 | /* |
| 1354 | * transfer data |
| 1355 | */ |
| 1356 | while (thislen > 0) { |
| 1357 | int blen = blen = rq->data_len; |
| 1358 | char *ptr = rq->data; |
| 1359 | |
| 1360 | /* |
| 1361 | * bio backed? |
| 1362 | */ |
| 1363 | if (rq->bio) { |
| 1364 | ptr = bio_data(rq->bio); |
| 1365 | blen = bio_iovec(rq->bio)->bv_len; |
| 1366 | } |
| 1367 | |
| 1368 | if (!ptr) { |
| 1369 | printk(KERN_ERR "%s: confused, missing data\n", drive->name); |
| 1370 | break; |
| 1371 | } |
| 1372 | |
| 1373 | if (blen > thislen) |
| 1374 | blen = thislen; |
| 1375 | |
| 1376 | xferfunc(drive, ptr, blen); |
| 1377 | |
| 1378 | thislen -= blen; |
| 1379 | len -= blen; |
| 1380 | rq->data_len -= blen; |
| 1381 | |
| 1382 | if (rq->bio) |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1383 | /* |
| 1384 | * The request can't be completed until DRQ is cleared. |
| 1385 | * So complete the data, but don't complete the request |
| 1386 | * using the dummy function for the callback feature |
| 1387 | * of blk_end_request_callback(). |
| 1388 | */ |
| 1389 | blk_end_request_callback(rq, 0, blen, |
| 1390 | cdrom_newpc_intr_dummy_cb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | else |
| 1392 | rq->data += blen; |
| 1393 | } |
| 1394 | |
| 1395 | /* |
| 1396 | * pad, if necessary |
| 1397 | */ |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1398 | if (len > 0) |
| 1399 | ide_cd_pad_transfer(drive, xferfunc, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | |
Eric Sesterhenn | 125e187 | 2006-06-23 02:06:06 -0700 | [diff] [blame] | 1401 | BUG_ON(HWGROUP(drive)->handler != NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1402 | |
| 1403 | ide_set_handler(drive, cdrom_newpc_intr, rq->timeout, NULL); |
| 1404 | return ide_started; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | } |
| 1406 | |
| 1407 | static ide_startstop_t cdrom_write_intr(ide_drive_t *drive) |
| 1408 | { |
| 1409 | int stat, ireason, len, sectors_to_transfer, uptodate; |
| 1410 | struct cdrom_info *info = drive->driver_data; |
| 1411 | int dma_error = 0, dma = info->dma; |
| 1412 | u8 lowcyl = 0, highcyl = 0; |
| 1413 | |
| 1414 | struct request *rq = HWGROUP(drive)->rq; |
| 1415 | |
| 1416 | /* Check for errors. */ |
| 1417 | if (dma) { |
| 1418 | info->dma = 0; |
Bartlomiej Zolnierkiewicz | b481b23 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1419 | dma_error = HWIF(drive)->ide_dma_end(drive); |
| 1420 | if (dma_error) { |
| 1421 | printk(KERN_ERR "%s: DMA write error\n", drive->name); |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 1422 | ide_dma_off(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | } |
| 1424 | } |
| 1425 | |
| 1426 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1427 | return ide_stopped; |
| 1428 | |
| 1429 | /* |
| 1430 | * using dma, transfer is complete now |
| 1431 | */ |
| 1432 | if (dma) { |
| 1433 | if (dma_error) |
| 1434 | return ide_error(drive, "dma error", stat); |
| 1435 | |
| 1436 | ide_end_request(drive, 1, rq->nr_sectors); |
| 1437 | return ide_stopped; |
| 1438 | } |
| 1439 | |
| 1440 | /* Read the interrupt reason and the transfer length. */ |
Bartlomiej Zolnierkiewicz | 31a7119 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1441 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1442 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1443 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1444 | |
| 1445 | len = lowcyl + (256 * highcyl); |
| 1446 | |
| 1447 | /* If DRQ is clear, the command has completed. */ |
| 1448 | if ((stat & DRQ_STAT) == 0) { |
| 1449 | /* If we're not done writing, complain. |
| 1450 | * Otherwise, complete the command normally. |
| 1451 | */ |
| 1452 | uptodate = 1; |
| 1453 | if (rq->current_nr_sectors > 0) { |
Bartlomiej Zolnierkiewicz | b481b23 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1454 | printk(KERN_ERR "%s: %s: data underrun (%d blocks)\n", |
| 1455 | drive->name, __FUNCTION__, |
| 1456 | rq->current_nr_sectors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | uptodate = 0; |
| 1458 | } |
| 1459 | cdrom_end_request(drive, uptodate); |
| 1460 | return ide_stopped; |
| 1461 | } |
| 1462 | |
| 1463 | /* Check that the drive is expecting to do the same thing we are. */ |
| 1464 | if (cdrom_write_check_ireason(drive, len, ireason)) |
| 1465 | return ide_stopped; |
| 1466 | |
| 1467 | sectors_to_transfer = len / SECTOR_SIZE; |
| 1468 | |
| 1469 | /* |
| 1470 | * now loop and write out the data |
| 1471 | */ |
| 1472 | while (sectors_to_transfer > 0) { |
| 1473 | int this_transfer; |
| 1474 | |
| 1475 | if (!rq->current_nr_sectors) { |
Bartlomiej Zolnierkiewicz | b481b23 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1476 | printk(KERN_ERR "%s: %s: confused, missing data\n", |
| 1477 | drive->name, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | break; |
| 1479 | } |
| 1480 | |
| 1481 | /* |
| 1482 | * Figure out how many sectors we can transfer |
| 1483 | */ |
| 1484 | this_transfer = min_t(int, sectors_to_transfer, rq->current_nr_sectors); |
| 1485 | |
| 1486 | while (this_transfer > 0) { |
| 1487 | HWIF(drive)->atapi_output_bytes(drive, rq->buffer, SECTOR_SIZE); |
| 1488 | rq->buffer += SECTOR_SIZE; |
| 1489 | --rq->nr_sectors; |
| 1490 | --rq->current_nr_sectors; |
| 1491 | ++rq->sector; |
| 1492 | --this_transfer; |
| 1493 | --sectors_to_transfer; |
| 1494 | } |
| 1495 | |
| 1496 | /* |
| 1497 | * current buffer complete, move on |
| 1498 | */ |
| 1499 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) |
| 1500 | cdrom_end_request(drive, 1); |
| 1501 | } |
| 1502 | |
| 1503 | /* re-arm handler */ |
| 1504 | ide_set_handler(drive, &cdrom_write_intr, ATAPI_WAIT_PC, NULL); |
| 1505 | return ide_started; |
| 1506 | } |
| 1507 | |
| 1508 | static ide_startstop_t cdrom_start_write_cont(ide_drive_t *drive) |
| 1509 | { |
| 1510 | struct request *rq = HWGROUP(drive)->rq; |
| 1511 | |
| 1512 | #if 0 /* the immediate bit */ |
| 1513 | rq->cmd[1] = 1 << 3; |
| 1514 | #endif |
| 1515 | rq->timeout = ATAPI_WAIT_PC; |
| 1516 | |
| 1517 | return cdrom_transfer_packet_command(drive, rq, cdrom_write_intr); |
| 1518 | } |
| 1519 | |
| 1520 | static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq) |
| 1521 | { |
| 1522 | struct cdrom_info *info = drive->driver_data; |
| 1523 | struct gendisk *g = info->disk; |
| 1524 | unsigned short sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1525 | |
| 1526 | /* |
| 1527 | * writes *must* be hardware frame aligned |
| 1528 | */ |
| 1529 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || |
| 1530 | (rq->sector & (sectors_per_frame - 1))) { |
| 1531 | cdrom_end_request(drive, 0); |
| 1532 | return ide_stopped; |
| 1533 | } |
| 1534 | |
| 1535 | /* |
| 1536 | * disk has become write protected |
| 1537 | */ |
| 1538 | if (g->policy) { |
| 1539 | cdrom_end_request(drive, 0); |
| 1540 | return ide_stopped; |
| 1541 | } |
| 1542 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | info->nsectors_buffered = 0; |
| 1544 | |
| 1545 | /* use dma, if possible. we don't need to check more, since we |
| 1546 | * know that the transfer is always (at least!) frame aligned */ |
| 1547 | info->dma = drive->using_dma ? 1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1548 | |
| 1549 | info->devinfo.media_written = 1; |
| 1550 | |
| 1551 | /* Start sending the write request to the drive. */ |
| 1552 | return cdrom_start_packet_command(drive, 32768, cdrom_start_write_cont); |
| 1553 | } |
| 1554 | |
| 1555 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) |
| 1556 | { |
| 1557 | struct request *rq = HWGROUP(drive)->rq; |
| 1558 | |
| 1559 | if (!rq->timeout) |
| 1560 | rq->timeout = ATAPI_WAIT_PC; |
| 1561 | |
| 1562 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
| 1563 | } |
| 1564 | |
| 1565 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) |
| 1566 | { |
| 1567 | struct cdrom_info *info = drive->driver_data; |
| 1568 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1569 | rq->cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1570 | |
| 1571 | info->dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1572 | |
| 1573 | /* |
| 1574 | * sg request |
| 1575 | */ |
| 1576 | if (rq->bio) { |
| 1577 | int mask = drive->queue->dma_alignment; |
| 1578 | unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); |
| 1579 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | info->dma = drive->using_dma; |
| 1581 | |
| 1582 | /* |
| 1583 | * check if dma is safe |
Linus Torvalds | 5d9e4ea | 2005-05-27 07:36:17 -0700 | [diff] [blame] | 1584 | * |
| 1585 | * NOTE! The "len" and "addr" checks should possibly have |
| 1586 | * separate masks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | */ |
Jens Axboe | 4e7c681 | 2005-05-31 17:47:36 +0200 | [diff] [blame] | 1588 | if ((rq->data_len & 15) || (addr & mask)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | info->dma = 0; |
| 1590 | } |
| 1591 | |
| 1592 | /* Start sending the command to the drive. */ |
| 1593 | return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); |
| 1594 | } |
| 1595 | |
| 1596 | /**************************************************************************** |
| 1597 | * cdrom driver request routine. |
| 1598 | */ |
| 1599 | static ide_startstop_t |
| 1600 | ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block) |
| 1601 | { |
| 1602 | ide_startstop_t action; |
| 1603 | struct cdrom_info *info = drive->driver_data; |
| 1604 | |
| 1605 | if (blk_fs_request(rq)) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1606 | if (info->cd_flags & IDE_CD_FLAG_SEEKING) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | unsigned long elapsed = jiffies - info->start_seek; |
| 1608 | int stat = HWIF(drive)->INB(IDE_STATUS_REG); |
| 1609 | |
| 1610 | if ((stat & SEEK_STAT) != SEEK_STAT) { |
| 1611 | if (elapsed < IDECD_SEEK_TIMEOUT) { |
| 1612 | ide_stall_queue(drive, IDECD_SEEK_TIMER); |
| 1613 | return ide_stopped; |
| 1614 | } |
| 1615 | printk (KERN_ERR "%s: DSC timeout\n", drive->name); |
| 1616 | } |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1617 | info->cd_flags &= ~IDE_CD_FLAG_SEEKING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1618 | } |
| 1619 | if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) { |
| 1620 | action = cdrom_start_seek(drive, block); |
| 1621 | } else { |
| 1622 | if (rq_data_dir(rq) == READ) |
| 1623 | action = cdrom_start_read(drive, block); |
| 1624 | else |
| 1625 | action = cdrom_start_write(drive, rq); |
| 1626 | } |
| 1627 | info->last_block = block; |
| 1628 | return action; |
Jens Axboe | cea2885 | 2006-10-12 15:08:45 +0200 | [diff] [blame] | 1629 | } else if (rq->cmd_type == REQ_TYPE_SENSE || |
| 1630 | rq->cmd_type == REQ_TYPE_ATA_PC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1631 | return cdrom_do_packet_command(drive); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1632 | } else if (blk_pc_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1633 | return cdrom_do_block_pc(drive, rq); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1634 | } else if (blk_special_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1635 | /* |
| 1636 | * right now this can only be a reset... |
| 1637 | */ |
| 1638 | cdrom_end_request(drive, 1); |
| 1639 | return ide_stopped; |
| 1640 | } |
| 1641 | |
| 1642 | blk_dump_rq_flags(rq, "ide-cd bad flags"); |
| 1643 | cdrom_end_request(drive, 0); |
| 1644 | return ide_stopped; |
| 1645 | } |
| 1646 | |
| 1647 | |
| 1648 | |
| 1649 | /**************************************************************************** |
| 1650 | * Ioctl handling. |
| 1651 | * |
| 1652 | * Routines which queue packet commands take as a final argument a pointer |
| 1653 | * to a request_sense struct. If execution of the command results |
| 1654 | * in an error with a CHECK CONDITION status, this structure will be filled |
| 1655 | * with the results of the subsequent request sense command. The pointer |
| 1656 | * can also be NULL, in which case no sense information is returned. |
| 1657 | */ |
| 1658 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | static |
| 1660 | void msf_from_bcd (struct atapi_msf *msf) |
| 1661 | { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1662 | msf->minute = BCD2BIN(msf->minute); |
| 1663 | msf->second = BCD2BIN(msf->second); |
| 1664 | msf->frame = BCD2BIN(msf->frame); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | } |
| 1666 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1667 | static inline |
| 1668 | void lba_to_msf (int lba, byte *m, byte *s, byte *f) |
| 1669 | { |
| 1670 | lba += CD_MSF_OFFSET; |
| 1671 | lba &= 0xffffff; /* negative lbas use only 24 bits */ |
| 1672 | *m = lba / (CD_SECS * CD_FRAMES); |
| 1673 | lba %= (CD_SECS * CD_FRAMES); |
| 1674 | *s = lba / CD_FRAMES; |
| 1675 | *f = lba % CD_FRAMES; |
| 1676 | } |
| 1677 | |
| 1678 | |
| 1679 | static inline |
| 1680 | int msf_to_lba (byte m, byte s, byte f) |
| 1681 | { |
| 1682 | return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET; |
| 1683 | } |
| 1684 | |
| 1685 | static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
| 1686 | { |
| 1687 | struct request req; |
| 1688 | struct cdrom_info *info = drive->driver_data; |
| 1689 | struct cdrom_device_info *cdi = &info->devinfo; |
| 1690 | |
| 1691 | cdrom_prepare_request(drive, &req); |
| 1692 | |
| 1693 | req.sense = sense; |
| 1694 | req.cmd[0] = GPCMD_TEST_UNIT_READY; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1695 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1696 | |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1697 | /* |
| 1698 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to |
| 1699 | * switch CDs instead of supporting the LOAD_UNLOAD opcode. |
| 1700 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | req.cmd[7] = cdi->sanyo_slot % 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1702 | |
| 1703 | return cdrom_queue_packet_command(drive, &req); |
| 1704 | } |
| 1705 | |
| 1706 | |
| 1707 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ |
| 1708 | static int |
| 1709 | cdrom_lockdoor(ide_drive_t *drive, int lockflag, struct request_sense *sense) |
| 1710 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1711 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1712 | struct request_sense my_sense; |
| 1713 | struct request req; |
| 1714 | int stat; |
| 1715 | |
| 1716 | if (sense == NULL) |
| 1717 | sense = &my_sense; |
| 1718 | |
| 1719 | /* If the drive cannot lock the door, just pretend. */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1720 | if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | stat = 0; |
| 1722 | } else { |
| 1723 | cdrom_prepare_request(drive, &req); |
| 1724 | req.sense = sense; |
| 1725 | req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
| 1726 | req.cmd[4] = lockflag ? 1 : 0; |
| 1727 | stat = cdrom_queue_packet_command(drive, &req); |
| 1728 | } |
| 1729 | |
| 1730 | /* If we got an illegal field error, the drive |
| 1731 | probably cannot lock the door. */ |
| 1732 | if (stat != 0 && |
| 1733 | sense->sense_key == ILLEGAL_REQUEST && |
| 1734 | (sense->asc == 0x24 || sense->asc == 0x20)) { |
| 1735 | printk (KERN_ERR "%s: door locking not supported\n", |
| 1736 | drive->name); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1737 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1738 | stat = 0; |
| 1739 | } |
| 1740 | |
| 1741 | /* no medium, that's alright. */ |
| 1742 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) |
| 1743 | stat = 0; |
| 1744 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1745 | if (stat == 0) { |
| 1746 | if (lockflag) |
| 1747 | cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED; |
| 1748 | else |
| 1749 | cd->cd_flags &= ~IDE_CD_FLAG_DOOR_LOCKED; |
| 1750 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | |
| 1752 | return stat; |
| 1753 | } |
| 1754 | |
| 1755 | |
| 1756 | /* Eject the disk if EJECTFLAG is 0. |
| 1757 | If EJECTFLAG is 1, try to reload the disk. */ |
| 1758 | static int cdrom_eject(ide_drive_t *drive, int ejectflag, |
| 1759 | struct request_sense *sense) |
| 1760 | { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1761 | struct cdrom_info *cd = drive->driver_data; |
| 1762 | struct cdrom_device_info *cdi = &cd->devinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | struct request req; |
| 1764 | char loej = 0x02; |
| 1765 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1766 | if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1767 | return -EDRIVE_CANT_DO_THIS; |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | /* reload fails on some drives, if the tray is locked */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1770 | if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1771 | return 0; |
| 1772 | |
| 1773 | cdrom_prepare_request(drive, &req); |
| 1774 | |
| 1775 | /* 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] | 1776 | if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | loej = 0; |
| 1778 | |
| 1779 | req.sense = sense; |
| 1780 | req.cmd[0] = GPCMD_START_STOP_UNIT; |
| 1781 | req.cmd[4] = loej | (ejectflag != 0); |
| 1782 | return cdrom_queue_packet_command(drive, &req); |
| 1783 | } |
| 1784 | |
| 1785 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, |
| 1786 | unsigned long *sectors_per_frame, |
| 1787 | struct request_sense *sense) |
| 1788 | { |
| 1789 | struct { |
| 1790 | __u32 lba; |
| 1791 | __u32 blocklen; |
| 1792 | } capbuf; |
| 1793 | |
| 1794 | int stat; |
| 1795 | struct request req; |
| 1796 | |
| 1797 | cdrom_prepare_request(drive, &req); |
| 1798 | |
| 1799 | req.sense = sense; |
| 1800 | req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; |
| 1801 | req.data = (char *)&capbuf; |
| 1802 | req.data_len = sizeof(capbuf); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1803 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | |
| 1805 | stat = cdrom_queue_packet_command(drive, &req); |
| 1806 | if (stat == 0) { |
| 1807 | *capacity = 1 + be32_to_cpu(capbuf.lba); |
| 1808 | *sectors_per_frame = |
| 1809 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; |
| 1810 | } |
| 1811 | |
| 1812 | return stat; |
| 1813 | } |
| 1814 | |
| 1815 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, |
| 1816 | int format, char *buf, int buflen, |
| 1817 | struct request_sense *sense) |
| 1818 | { |
| 1819 | struct request req; |
| 1820 | |
| 1821 | cdrom_prepare_request(drive, &req); |
| 1822 | |
| 1823 | req.sense = sense; |
| 1824 | req.data = buf; |
| 1825 | req.data_len = buflen; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1826 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
| 1828 | req.cmd[6] = trackno; |
| 1829 | req.cmd[7] = (buflen >> 8); |
| 1830 | req.cmd[8] = (buflen & 0xff); |
| 1831 | req.cmd[9] = (format << 6); |
| 1832 | |
| 1833 | if (msf_flag) |
| 1834 | req.cmd[1] = 2; |
| 1835 | |
| 1836 | return cdrom_queue_packet_command(drive, &req); |
| 1837 | } |
| 1838 | |
| 1839 | |
| 1840 | /* Try to read the entire TOC for the disk into our internal buffer. */ |
| 1841 | static int cdrom_read_toc(ide_drive_t *drive, struct request_sense *sense) |
| 1842 | { |
| 1843 | int stat, ntracks, i; |
| 1844 | struct cdrom_info *info = drive->driver_data; |
| 1845 | struct cdrom_device_info *cdi = &info->devinfo; |
| 1846 | struct atapi_toc *toc = info->toc; |
| 1847 | struct { |
| 1848 | struct atapi_toc_header hdr; |
| 1849 | struct atapi_toc_entry ent; |
| 1850 | } ms_tmp; |
| 1851 | long last_written; |
| 1852 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; |
| 1853 | |
| 1854 | if (toc == NULL) { |
| 1855 | /* Try to allocate space. */ |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1856 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | if (toc == NULL) { |
| 1858 | printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); |
| 1859 | return -ENOMEM; |
| 1860 | } |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1861 | info->toc = toc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | } |
| 1863 | |
| 1864 | /* Check to see if the existing data is still valid. |
| 1865 | If it is, just return. */ |
| 1866 | (void) cdrom_check_status(drive, sense); |
| 1867 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1868 | if (info->cd_flags & IDE_CD_FLAG_TOC_VALID) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1869 | return 0; |
| 1870 | |
| 1871 | /* Try to get the total cdrom capacity and sector size. */ |
| 1872 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, |
| 1873 | sense); |
| 1874 | if (stat) |
| 1875 | toc->capacity = 0x1fffff; |
| 1876 | |
| 1877 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 1878 | /* Save a private copy of te TOC capacity for error handling */ |
| 1879 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
| 1880 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | blk_queue_hardsect_size(drive->queue, |
| 1882 | sectors_per_frame << SECTOR_BITS); |
| 1883 | |
| 1884 | /* First read just the header, so we know how long the TOC is. */ |
| 1885 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, |
| 1886 | sizeof(struct atapi_toc_header), sense); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1887 | if (stat) |
| 1888 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1889 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1890 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1891 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
| 1892 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1893 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1894 | |
| 1895 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; |
| 1896 | if (ntracks <= 0) |
| 1897 | return -EIO; |
| 1898 | if (ntracks > MAX_TRACKS) |
| 1899 | ntracks = MAX_TRACKS; |
| 1900 | |
| 1901 | /* Now read the whole schmeer. */ |
| 1902 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, |
| 1903 | (char *)&toc->hdr, |
| 1904 | sizeof(struct atapi_toc_header) + |
| 1905 | (ntracks + 1) * |
| 1906 | sizeof(struct atapi_toc_entry), sense); |
| 1907 | |
| 1908 | if (stat && toc->hdr.first_track > 1) { |
| 1909 | /* Cds with CDI tracks only don't have any TOC entries, |
| 1910 | despite of this the returned values are |
| 1911 | first_track == last_track = number of CDI tracks + 1, |
| 1912 | so that this case is indistinguishable from the same |
| 1913 | layout plus an additional audio track. |
| 1914 | If we get an error for the regular case, we assume |
| 1915 | a CDI without additional audio tracks. In this case |
| 1916 | the readable TOC is empty (CDI tracks are not included) |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 1917 | and only holds the Leadout entry. Heiko Eißfeldt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1918 | ntracks = 0; |
| 1919 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, |
| 1920 | (char *)&toc->hdr, |
| 1921 | sizeof(struct atapi_toc_header) + |
| 1922 | (ntracks + 1) * |
| 1923 | sizeof(struct atapi_toc_entry), |
| 1924 | sense); |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1925 | if (stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1926 | return stat; |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1927 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1928 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1929 | toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT); |
| 1930 | toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT); |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1931 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1932 | toc->hdr.first_track = CDROM_LEADOUT; |
| 1933 | toc->hdr.last_track = CDROM_LEADOUT; |
| 1934 | } |
| 1935 | } |
| 1936 | |
| 1937 | if (stat) |
| 1938 | return stat; |
| 1939 | |
| 1940 | toc->hdr.toc_length = ntohs (toc->hdr.toc_length); |
| 1941 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1942 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1943 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
| 1944 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1945 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1947 | for (i = 0; i <= ntracks; i++) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1948 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
| 1949 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1950 | toc->ent[i].track = BCD2BIN(toc->ent[i].track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1951 | msf_from_bcd(&toc->ent[i].addr.msf); |
| 1952 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute, |
| 1954 | toc->ent[i].addr.msf.second, |
| 1955 | toc->ent[i].addr.msf.frame); |
| 1956 | } |
| 1957 | |
| 1958 | /* Read the multisession information. */ |
| 1959 | if (toc->hdr.first_track != CDROM_LEADOUT) { |
| 1960 | /* Read the multisession information. */ |
| 1961 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, |
| 1962 | sizeof(ms_tmp), sense); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1963 | if (stat) |
| 1964 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1965 | |
| 1966 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); |
| 1967 | } else { |
| 1968 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; |
| 1969 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ |
| 1970 | } |
| 1971 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1972 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1973 | /* Re-read multisession information using MSF format */ |
| 1974 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, |
| 1975 | sizeof(ms_tmp), sense); |
| 1976 | if (stat) |
| 1977 | return stat; |
| 1978 | |
| 1979 | msf_from_bcd (&ms_tmp.ent.addr.msf); |
| 1980 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, |
| 1981 | ms_tmp.ent.addr.msf.second, |
| 1982 | ms_tmp.ent.addr.msf.frame); |
| 1983 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1984 | |
| 1985 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); |
| 1986 | |
| 1987 | /* Now try to get the total cdrom capacity. */ |
| 1988 | stat = cdrom_get_last_written(cdi, &last_written); |
| 1989 | if (!stat && (last_written > toc->capacity)) { |
| 1990 | toc->capacity = last_written; |
| 1991 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 1992 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1993 | } |
| 1994 | |
| 1995 | /* Remember that we've read this stuff. */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1996 | info->cd_flags |= IDE_CD_FLAG_TOC_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | |
| 1998 | return 0; |
| 1999 | } |
| 2000 | |
| 2001 | |
| 2002 | static int cdrom_read_subchannel(ide_drive_t *drive, int format, char *buf, |
| 2003 | int buflen, struct request_sense *sense) |
| 2004 | { |
| 2005 | struct request req; |
| 2006 | |
| 2007 | cdrom_prepare_request(drive, &req); |
| 2008 | |
| 2009 | req.sense = sense; |
| 2010 | req.data = buf; |
| 2011 | req.data_len = buflen; |
| 2012 | req.cmd[0] = GPCMD_READ_SUBCHANNEL; |
| 2013 | req.cmd[1] = 2; /* MSF addressing */ |
| 2014 | req.cmd[2] = 0x40; /* request subQ data */ |
| 2015 | req.cmd[3] = format; |
| 2016 | req.cmd[7] = (buflen >> 8); |
| 2017 | req.cmd[8] = (buflen & 0xff); |
| 2018 | return cdrom_queue_packet_command(drive, &req); |
| 2019 | } |
| 2020 | |
| 2021 | /* ATAPI cdrom drives are free to select the speed you request or any slower |
| 2022 | rate :-( Requesting too fast a speed will _not_ produce an error. */ |
| 2023 | static int cdrom_select_speed(ide_drive_t *drive, int speed, |
| 2024 | struct request_sense *sense) |
| 2025 | { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2026 | struct cdrom_info *cd = drive->driver_data; |
| 2027 | struct cdrom_device_info *cdi = &cd->devinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2028 | struct request req; |
| 2029 | cdrom_prepare_request(drive, &req); |
| 2030 | |
| 2031 | req.sense = sense; |
| 2032 | if (speed == 0) |
| 2033 | speed = 0xffff; /* set to max */ |
| 2034 | else |
| 2035 | speed *= 177; /* Nx to kbytes/s */ |
| 2036 | |
| 2037 | req.cmd[0] = GPCMD_SET_SPEED; |
| 2038 | /* Read Drive speed in kbytes/second MSB */ |
| 2039 | req.cmd[2] = (speed >> 8) & 0xff; |
| 2040 | /* Read Drive speed in kbytes/second LSB */ |
| 2041 | req.cmd[3] = speed & 0xff; |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2042 | if ((cdi->mask & (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) != |
| 2043 | (CDC_CD_R | CDC_CD_RW | CDC_DVD_R)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2044 | /* Write Drive speed in kbytes/second MSB */ |
| 2045 | req.cmd[4] = (speed >> 8) & 0xff; |
| 2046 | /* Write Drive speed in kbytes/second LSB */ |
| 2047 | req.cmd[5] = speed & 0xff; |
| 2048 | } |
| 2049 | |
| 2050 | return cdrom_queue_packet_command(drive, &req); |
| 2051 | } |
| 2052 | |
| 2053 | static int cdrom_play_audio(ide_drive_t *drive, int lba_start, int lba_end) |
| 2054 | { |
| 2055 | struct request_sense sense; |
| 2056 | struct request req; |
| 2057 | |
| 2058 | cdrom_prepare_request(drive, &req); |
| 2059 | |
| 2060 | req.sense = &sense; |
| 2061 | req.cmd[0] = GPCMD_PLAY_AUDIO_MSF; |
| 2062 | lba_to_msf(lba_start, &req.cmd[3], &req.cmd[4], &req.cmd[5]); |
| 2063 | lba_to_msf(lba_end-1, &req.cmd[6], &req.cmd[7], &req.cmd[8]); |
| 2064 | |
| 2065 | return cdrom_queue_packet_command(drive, &req); |
| 2066 | } |
| 2067 | |
| 2068 | static int cdrom_get_toc_entry(ide_drive_t *drive, int track, |
| 2069 | struct atapi_toc_entry **ent) |
| 2070 | { |
| 2071 | struct cdrom_info *info = drive->driver_data; |
| 2072 | struct atapi_toc *toc = info->toc; |
| 2073 | int ntracks; |
| 2074 | |
| 2075 | /* |
| 2076 | * don't serve cached data, if the toc isn't valid |
| 2077 | */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2078 | if ((info->cd_flags & IDE_CD_FLAG_TOC_VALID) == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2079 | return -EINVAL; |
| 2080 | |
| 2081 | /* Check validity of requested track number. */ |
| 2082 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; |
| 2083 | if (toc->hdr.first_track == CDROM_LEADOUT) ntracks = 0; |
| 2084 | if (track == CDROM_LEADOUT) |
| 2085 | *ent = &toc->ent[ntracks]; |
| 2086 | else if (track < toc->hdr.first_track || |
| 2087 | track > toc->hdr.last_track) |
| 2088 | return -EINVAL; |
| 2089 | else |
| 2090 | *ent = &toc->ent[track - toc->hdr.first_track]; |
| 2091 | |
| 2092 | return 0; |
| 2093 | } |
| 2094 | |
| 2095 | /* the generic packet interface to cdrom.c */ |
| 2096 | static int ide_cdrom_packet(struct cdrom_device_info *cdi, |
| 2097 | struct packet_command *cgc) |
| 2098 | { |
| 2099 | struct request req; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2100 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | |
| 2102 | if (cgc->timeout <= 0) |
| 2103 | cgc->timeout = ATAPI_WAIT_PC; |
| 2104 | |
| 2105 | /* here we queue the commands from the uniform CD-ROM |
| 2106 | layer. the packet must be complete, as we do not |
| 2107 | touch it at all. */ |
| 2108 | cdrom_prepare_request(drive, &req); |
| 2109 | memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE); |
| 2110 | if (cgc->sense) |
| 2111 | memset(cgc->sense, 0, sizeof(struct request_sense)); |
| 2112 | req.data = cgc->buffer; |
| 2113 | req.data_len = cgc->buflen; |
| 2114 | req.timeout = cgc->timeout; |
| 2115 | |
| 2116 | if (cgc->quiet) |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2117 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | |
| 2119 | req.sense = cgc->sense; |
| 2120 | cgc->stat = cdrom_queue_packet_command(drive, &req); |
| 2121 | if (!cgc->stat) |
| 2122 | cgc->buflen -= req.data_len; |
| 2123 | return cgc->stat; |
| 2124 | } |
| 2125 | |
| 2126 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2127 | int ide_cdrom_audio_ioctl (struct cdrom_device_info *cdi, |
| 2128 | unsigned int cmd, void *arg) |
| 2129 | |
| 2130 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2131 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2132 | struct cdrom_info *info = drive->driver_data; |
| 2133 | int stat; |
| 2134 | |
| 2135 | switch (cmd) { |
| 2136 | /* |
| 2137 | * emulate PLAY_AUDIO_TI command with PLAY_AUDIO_10, since |
| 2138 | * atapi doesn't support it |
| 2139 | */ |
| 2140 | case CDROMPLAYTRKIND: { |
| 2141 | unsigned long lba_start, lba_end; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2142 | struct cdrom_ti *ti = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2143 | struct atapi_toc_entry *first_toc, *last_toc; |
| 2144 | |
| 2145 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk0, &first_toc); |
| 2146 | if (stat) |
| 2147 | return stat; |
| 2148 | |
| 2149 | stat = cdrom_get_toc_entry(drive, ti->cdti_trk1, &last_toc); |
| 2150 | if (stat) |
| 2151 | return stat; |
| 2152 | |
| 2153 | if (ti->cdti_trk1 != CDROM_LEADOUT) |
| 2154 | ++last_toc; |
| 2155 | lba_start = first_toc->addr.lba; |
| 2156 | lba_end = last_toc->addr.lba; |
| 2157 | |
| 2158 | if (lba_end <= lba_start) |
| 2159 | return -EINVAL; |
| 2160 | |
| 2161 | return cdrom_play_audio(drive, lba_start, lba_end); |
| 2162 | } |
| 2163 | |
| 2164 | case CDROMREADTOCHDR: { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2165 | struct cdrom_tochdr *tochdr = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | struct atapi_toc *toc; |
| 2167 | |
| 2168 | /* Make sure our saved TOC is valid. */ |
| 2169 | stat = cdrom_read_toc(drive, NULL); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2170 | if (stat) |
| 2171 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2172 | |
| 2173 | toc = info->toc; |
| 2174 | tochdr->cdth_trk0 = toc->hdr.first_track; |
| 2175 | tochdr->cdth_trk1 = toc->hdr.last_track; |
| 2176 | |
| 2177 | return 0; |
| 2178 | } |
| 2179 | |
| 2180 | case CDROMREADTOCENTRY: { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2181 | struct cdrom_tocentry *tocentry = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2182 | struct atapi_toc_entry *toce; |
| 2183 | |
| 2184 | stat = cdrom_get_toc_entry(drive, tocentry->cdte_track, &toce); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2185 | if (stat) |
| 2186 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | |
| 2188 | tocentry->cdte_ctrl = toce->control; |
| 2189 | tocentry->cdte_adr = toce->adr; |
| 2190 | if (tocentry->cdte_format == CDROM_MSF) { |
| 2191 | lba_to_msf (toce->addr.lba, |
| 2192 | &tocentry->cdte_addr.msf.minute, |
| 2193 | &tocentry->cdte_addr.msf.second, |
| 2194 | &tocentry->cdte_addr.msf.frame); |
| 2195 | } else |
| 2196 | tocentry->cdte_addr.lba = toce->addr.lba; |
| 2197 | |
| 2198 | return 0; |
| 2199 | } |
| 2200 | |
| 2201 | default: |
| 2202 | return -EINVAL; |
| 2203 | } |
| 2204 | } |
| 2205 | |
| 2206 | static |
| 2207 | int ide_cdrom_reset (struct cdrom_device_info *cdi) |
| 2208 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2209 | ide_drive_t *drive = cdi->handle; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2210 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2211 | struct request_sense sense; |
| 2212 | struct request req; |
| 2213 | int ret; |
| 2214 | |
| 2215 | cdrom_prepare_request(drive, &req); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2216 | req.cmd_type = REQ_TYPE_SPECIAL; |
| 2217 | req.cmd_flags = REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2218 | ret = ide_do_drive_cmd(drive, &req, ide_wait); |
| 2219 | |
| 2220 | /* |
| 2221 | * A reset will unlock the door. If it was previously locked, |
| 2222 | * lock it again. |
| 2223 | */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2224 | if (cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | (void) cdrom_lockdoor(drive, 1, &sense); |
| 2226 | |
| 2227 | return ret; |
| 2228 | } |
| 2229 | |
| 2230 | |
| 2231 | static |
| 2232 | int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position) |
| 2233 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2234 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2235 | struct request_sense sense; |
| 2236 | |
| 2237 | if (position) { |
| 2238 | int stat = cdrom_lockdoor(drive, 0, &sense); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2239 | if (stat) |
| 2240 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2241 | } |
| 2242 | |
| 2243 | return cdrom_eject(drive, !position, &sense); |
| 2244 | } |
| 2245 | |
| 2246 | static |
| 2247 | int ide_cdrom_lock_door (struct cdrom_device_info *cdi, int lock) |
| 2248 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2249 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2250 | return cdrom_lockdoor(drive, lock, NULL); |
| 2251 | } |
| 2252 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2253 | static int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2254 | { |
| 2255 | struct cdrom_info *info = drive->driver_data; |
| 2256 | struct cdrom_device_info *cdi = &info->devinfo; |
| 2257 | struct packet_command cgc; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2258 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2259 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2260 | if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0) |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2261 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2262 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2263 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2264 | do { /* we seem to get stat=0x01,err=0x00 the first time (??) */ |
| 2265 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); |
| 2266 | if (!stat) |
| 2267 | break; |
| 2268 | } while (--attempts); |
| 2269 | return stat; |
| 2270 | } |
| 2271 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2272 | static void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2273 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2274 | struct cdrom_info *cd = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 481c8c6 | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2275 | u16 curspeed, maxspeed; |
| 2276 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2277 | curspeed = *(u16 *)&buf[8 + 14]; |
| 2278 | maxspeed = *(u16 *)&buf[8 + 8]; |
| 2279 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2280 | if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) { |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2281 | curspeed = le16_to_cpu(curspeed); |
| 2282 | maxspeed = le16_to_cpu(maxspeed); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2283 | } else { |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2284 | curspeed = be16_to_cpu(curspeed); |
| 2285 | maxspeed = be16_to_cpu(maxspeed); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2286 | } |
Bartlomiej Zolnierkiewicz | 481c8c6 | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2287 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2288 | cd->current_speed = (curspeed + (176/2)) / 176; |
| 2289 | cd->max_speed = (maxspeed + (176/2)) / 176; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2290 | } |
| 2291 | |
| 2292 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2293 | int ide_cdrom_select_speed (struct cdrom_device_info *cdi, int speed) |
| 2294 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2295 | ide_drive_t *drive = cdi->handle; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2296 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2297 | struct request_sense sense; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2298 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2299 | int stat; |
| 2300 | |
| 2301 | if ((stat = cdrom_select_speed(drive, speed, &sense)) < 0) |
| 2302 | return stat; |
| 2303 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2304 | if (!ide_cdrom_get_capabilities(drive, buf)) { |
| 2305 | ide_cdrom_update_speed(drive, buf); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2306 | cdi->speed = cd->current_speed; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 2307 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2308 | return 0; |
| 2309 | } |
| 2310 | |
| 2311 | /* |
| 2312 | * add logic to try GET_EVENT command first to check for media and tray |
| 2313 | * status. this should be supported by newer cd-r/w and all DVD etc |
| 2314 | * drives |
| 2315 | */ |
| 2316 | static |
| 2317 | int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr) |
| 2318 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2319 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2320 | struct media_event_desc med; |
| 2321 | struct request_sense sense; |
| 2322 | int stat; |
| 2323 | |
| 2324 | if (slot_nr != CDSL_CURRENT) |
| 2325 | return -EINVAL; |
| 2326 | |
| 2327 | stat = cdrom_check_status(drive, &sense); |
| 2328 | if (!stat || sense.sense_key == UNIT_ATTENTION) |
| 2329 | return CDS_DISC_OK; |
| 2330 | |
| 2331 | if (!cdrom_get_media_event(cdi, &med)) { |
| 2332 | if (med.media_present) |
| 2333 | return CDS_DISC_OK; |
| 2334 | else if (med.door_open) |
| 2335 | return CDS_TRAY_OPEN; |
| 2336 | else |
| 2337 | return CDS_NO_DISC; |
| 2338 | } |
| 2339 | |
| 2340 | if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04) |
| 2341 | return CDS_DISC_OK; |
| 2342 | |
| 2343 | /* |
| 2344 | * If not using Mt Fuji extended media tray reports, |
| 2345 | * just return TRAY_OPEN since ATAPI doesn't provide |
| 2346 | * any other way to detect this... |
| 2347 | */ |
| 2348 | if (sense.sense_key == NOT_READY) { |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 2349 | if (sense.asc == 0x3a && sense.ascq == 1) |
| 2350 | return CDS_NO_DISC; |
| 2351 | else |
| 2352 | return CDS_TRAY_OPEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2353 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2354 | return CDS_DRIVE_NOT_READY; |
| 2355 | } |
| 2356 | |
| 2357 | static |
| 2358 | int ide_cdrom_get_last_session (struct cdrom_device_info *cdi, |
| 2359 | struct cdrom_multisession *ms_info) |
| 2360 | { |
| 2361 | struct atapi_toc *toc; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2362 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2363 | struct cdrom_info *info = drive->driver_data; |
| 2364 | struct request_sense sense; |
| 2365 | int ret; |
| 2366 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2367 | 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] | 2368 | if ((ret = cdrom_read_toc(drive, &sense))) |
| 2369 | return ret; |
| 2370 | |
| 2371 | toc = info->toc; |
| 2372 | ms_info->addr.lba = toc->last_session_lba; |
| 2373 | ms_info->xa_flag = toc->xa_flag; |
| 2374 | |
| 2375 | return 0; |
| 2376 | } |
| 2377 | |
| 2378 | static |
| 2379 | int ide_cdrom_get_mcn (struct cdrom_device_info *cdi, |
| 2380 | struct cdrom_mcn *mcn_info) |
| 2381 | { |
| 2382 | int stat; |
| 2383 | char mcnbuf[24]; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2384 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2385 | |
| 2386 | /* get MCN */ |
| 2387 | if ((stat = cdrom_read_subchannel(drive, 2, mcnbuf, sizeof (mcnbuf), NULL))) |
| 2388 | return stat; |
| 2389 | |
| 2390 | memcpy (mcn_info->medium_catalog_number, mcnbuf+9, |
| 2391 | sizeof (mcn_info->medium_catalog_number)-1); |
| 2392 | mcn_info->medium_catalog_number[sizeof (mcn_info->medium_catalog_number)-1] |
| 2393 | = '\0'; |
| 2394 | |
| 2395 | return 0; |
| 2396 | } |
| 2397 | |
| 2398 | |
| 2399 | |
| 2400 | /**************************************************************************** |
| 2401 | * Other driver requests (open, close, check media change). |
| 2402 | */ |
| 2403 | |
| 2404 | static |
| 2405 | int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi, |
| 2406 | int slot_nr) |
| 2407 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2408 | ide_drive_t *drive = cdi->handle; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2409 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2410 | int retval; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2411 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2412 | if (slot_nr == CDSL_CURRENT) { |
| 2413 | (void) cdrom_check_status(drive, NULL); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2414 | retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0; |
| 2415 | cd->cd_flags &= ~IDE_CD_FLAG_MEDIA_CHANGED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2416 | return retval; |
| 2417 | } else { |
| 2418 | return -EINVAL; |
| 2419 | } |
| 2420 | } |
| 2421 | |
| 2422 | |
| 2423 | static |
| 2424 | int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose) |
| 2425 | { |
| 2426 | return 0; |
| 2427 | } |
| 2428 | |
| 2429 | /* |
| 2430 | * Close down the device. Invalidate all cached blocks. |
| 2431 | */ |
| 2432 | |
| 2433 | static |
| 2434 | void ide_cdrom_release_real (struct cdrom_device_info *cdi) |
| 2435 | { |
| 2436 | ide_drive_t *drive = cdi->handle; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2437 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2438 | |
| 2439 | if (!cdi->use_count) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2440 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2441 | } |
| 2442 | |
Bartlomiej Zolnierkiewicz | 20e7f7e | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2443 | #define IDE_CD_CAPABILITIES \ |
| 2444 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ |
| 2445 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ |
| 2446 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ |
| 2447 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ |
| 2448 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2449 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2450 | static struct cdrom_device_ops ide_cdrom_dops = { |
| 2451 | .open = ide_cdrom_open_real, |
| 2452 | .release = ide_cdrom_release_real, |
| 2453 | .drive_status = ide_cdrom_drive_status, |
| 2454 | .media_changed = ide_cdrom_check_media_change_real, |
| 2455 | .tray_move = ide_cdrom_tray_move, |
| 2456 | .lock_door = ide_cdrom_lock_door, |
| 2457 | .select_speed = ide_cdrom_select_speed, |
| 2458 | .get_last_session = ide_cdrom_get_last_session, |
| 2459 | .get_mcn = ide_cdrom_get_mcn, |
| 2460 | .reset = ide_cdrom_reset, |
| 2461 | .audio_ioctl = ide_cdrom_audio_ioctl, |
Bartlomiej Zolnierkiewicz | 20e7f7e | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2462 | .capability = IDE_CD_CAPABILITIES, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2463 | .generic_packet = ide_cdrom_packet, |
| 2464 | }; |
| 2465 | |
| 2466 | static int ide_cdrom_register (ide_drive_t *drive, int nslots) |
| 2467 | { |
| 2468 | struct cdrom_info *info = drive->driver_data; |
| 2469 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 2470 | |
| 2471 | devinfo->ops = &ide_cdrom_dops; |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2472 | devinfo->speed = info->current_speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2473 | devinfo->capacity = nslots; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2474 | devinfo->handle = drive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2475 | strcpy(devinfo->name, drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2476 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2477 | if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT) |
Bartlomiej Zolnierkiewicz | 3cbd814 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 2478 | devinfo->mask |= CDC_SELECT_SPEED; |
| 2479 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2480 | devinfo->disk = info->disk; |
| 2481 | return register_cdrom(devinfo); |
| 2482 | } |
| 2483 | |
| 2484 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2485 | int ide_cdrom_probe_capabilities (ide_drive_t *drive) |
| 2486 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2487 | struct cdrom_info *cd = drive->driver_data; |
| 2488 | struct cdrom_device_info *cdi = &cd->devinfo; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2489 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
| 2490 | mechtype_t mechtype; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2491 | int nslots = 1; |
| 2492 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2493 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
| 2494 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | |
| 2495 | CDC_MO_DRIVE | CDC_RAM); |
| 2496 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2497 | if (drive->media == ide_optical) { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2498 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2499 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name); |
| 2500 | return nslots; |
| 2501 | } |
| 2502 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2503 | if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2504 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2505 | cdi->mask &= ~CDC_PLAY_AUDIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2506 | return nslots; |
| 2507 | } |
| 2508 | |
| 2509 | /* |
| 2510 | * we have to cheat a little here. the packet will eventually |
| 2511 | * be queued with ide_cdrom_packet(), which extracts the |
| 2512 | * drive from cdi->handle. Since this device hasn't been |
| 2513 | * registered with the Uniform layer yet, it can't do this. |
| 2514 | * Same goes for cdi->ops. |
| 2515 | */ |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2516 | cdi->handle = drive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2517 | cdi->ops = &ide_cdrom_dops; |
| 2518 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2519 | if (ide_cdrom_get_capabilities(drive, buf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2520 | return 0; |
| 2521 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2522 | if ((buf[8 + 6] & 0x01) == 0) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2523 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2524 | if (buf[8 + 6] & 0x08) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2525 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2526 | if (buf[8 + 3] & 0x01) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2527 | cdi->mask &= ~CDC_CD_R; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2528 | if (buf[8 + 3] & 0x02) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2529 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2530 | if (buf[8 + 2] & 0x38) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2531 | cdi->mask &= ~CDC_DVD; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2532 | if (buf[8 + 3] & 0x20) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2533 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2534 | if (buf[8 + 3] & 0x10) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2535 | cdi->mask &= ~CDC_DVD_R; |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2536 | if ((buf[8 + 4] & 0x01) || (cd->cd_flags & IDE_CD_FLAG_PLAY_AUDIO_OK)) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2537 | cdi->mask &= ~CDC_PLAY_AUDIO; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2538 | |
| 2539 | mechtype = buf[8 + 6] >> 5; |
| 2540 | if (mechtype == mechtype_caddy || mechtype == mechtype_popup) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2541 | cdi->mask |= CDC_CLOSE_TRAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2542 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2543 | if (cdi->sanyo_slot > 0) { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2544 | cdi->mask &= ~CDC_SELECT_DISC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2545 | nslots = 3; |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2546 | } else if (mechtype == mechtype_individual_changer || |
| 2547 | mechtype == mechtype_cartridge_changer) { |
Bartlomiej Zolnierkiewicz | 2609d06 | 2008-02-01 23:09:19 +0100 | [diff] [blame] | 2548 | nslots = cdrom_number_of_slots(cdi); |
| 2549 | if (nslots > 1) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2550 | cdi->mask &= ~CDC_SELECT_DISC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2551 | } |
| 2552 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2553 | ide_cdrom_update_speed(drive, buf); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2554 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2555 | printk(KERN_INFO "%s: ATAPI", drive->name); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2556 | |
| 2557 | /* don't print speed if the drive reported 0 */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2558 | if (cd->max_speed) |
| 2559 | printk(KERN_CONT " %dX", cd->max_speed); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2560 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2561 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2562 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2563 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
| 2564 | printk(KERN_CONT " DVD%s%s", |
| 2565 | (cdi->mask & CDC_DVD_R) ? "" : "-R", |
| 2566 | (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2567 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2568 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
| 2569 | printk(KERN_CONT " CD%s%s", |
| 2570 | (cdi->mask & CDC_CD_R) ? "" : "-R", |
| 2571 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2572 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2573 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
| 2574 | printk(KERN_CONT " changer w/%d slots", nslots); |
| 2575 | else |
| 2576 | printk(KERN_CONT " drive"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2577 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2578 | 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] | 2579 | |
| 2580 | return nslots; |
| 2581 | } |
| 2582 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2583 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2584 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
| 2585 | { |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2586 | 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] | 2587 | } |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2588 | #else |
| 2589 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } |
| 2590 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2591 | |
| 2592 | /* |
| 2593 | * standard prep_rq_fn that builds 10 byte cmds |
| 2594 | */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 2595 | 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] | 2596 | { |
| 2597 | int hard_sect = queue_hardsect_size(q); |
| 2598 | long block = (long)rq->hard_sector / (hard_sect >> 9); |
| 2599 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); |
| 2600 | |
| 2601 | memset(rq->cmd, 0, sizeof(rq->cmd)); |
| 2602 | |
| 2603 | if (rq_data_dir(rq) == READ) |
| 2604 | rq->cmd[0] = GPCMD_READ_10; |
| 2605 | else |
| 2606 | rq->cmd[0] = GPCMD_WRITE_10; |
| 2607 | |
| 2608 | /* |
| 2609 | * fill in lba |
| 2610 | */ |
| 2611 | rq->cmd[2] = (block >> 24) & 0xff; |
| 2612 | rq->cmd[3] = (block >> 16) & 0xff; |
| 2613 | rq->cmd[4] = (block >> 8) & 0xff; |
| 2614 | rq->cmd[5] = block & 0xff; |
| 2615 | |
| 2616 | /* |
| 2617 | * and transfer length |
| 2618 | */ |
| 2619 | rq->cmd[7] = (blocks >> 8) & 0xff; |
| 2620 | rq->cmd[8] = blocks & 0xff; |
| 2621 | rq->cmd_len = 10; |
| 2622 | return BLKPREP_OK; |
| 2623 | } |
| 2624 | |
| 2625 | /* |
| 2626 | * Most of the SCSI commands are supported directly by ATAPI devices. |
| 2627 | * This transform handles the few exceptions. |
| 2628 | */ |
| 2629 | static int ide_cdrom_prep_pc(struct request *rq) |
| 2630 | { |
| 2631 | u8 *c = rq->cmd; |
| 2632 | |
| 2633 | /* |
| 2634 | * Transform 6-byte read/write commands to the 10-byte version |
| 2635 | */ |
| 2636 | if (c[0] == READ_6 || c[0] == WRITE_6) { |
| 2637 | c[8] = c[4]; |
| 2638 | c[5] = c[3]; |
| 2639 | c[4] = c[2]; |
| 2640 | c[3] = c[1] & 0x1f; |
| 2641 | c[2] = 0; |
| 2642 | c[1] &= 0xe0; |
| 2643 | c[0] += (READ_10 - READ_6); |
| 2644 | rq->cmd_len = 10; |
| 2645 | return BLKPREP_OK; |
| 2646 | } |
| 2647 | |
| 2648 | /* |
| 2649 | * it's silly to pretend we understand 6-byte sense commands, just |
| 2650 | * reject with ILLEGAL_REQUEST and the caller should take the |
| 2651 | * appropriate action |
| 2652 | */ |
| 2653 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { |
| 2654 | rq->errors = ILLEGAL_REQUEST; |
| 2655 | return BLKPREP_KILL; |
| 2656 | } |
| 2657 | |
| 2658 | return BLKPREP_OK; |
| 2659 | } |
| 2660 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 2661 | 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] | 2662 | { |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2663 | if (blk_fs_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2664 | return ide_cdrom_prep_fs(q, rq); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2665 | else if (blk_pc_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2666 | return ide_cdrom_prep_pc(rq); |
| 2667 | |
| 2668 | return 0; |
| 2669 | } |
| 2670 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2671 | struct cd_list_entry { |
| 2672 | const char *id_model; |
| 2673 | const char *id_firmware; |
| 2674 | unsigned int cd_flags; |
| 2675 | }; |
| 2676 | |
| 2677 | static const struct cd_list_entry ide_cd_quirks_list[] = { |
| 2678 | /* Limit transfer size per interrupt. */ |
| 2679 | { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, |
| 2680 | { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, |
| 2681 | /* SCR-3231 doesn't support the SET_CD_SPEED command. */ |
| 2682 | { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT }, |
| 2683 | /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */ |
| 2684 | { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD | |
| 2685 | IDE_CD_FLAG_PRE_ATAPI12, }, |
| 2686 | /* Vertos 300, some versions of this drive like to talk BCD. */ |
| 2687 | { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, }, |
| 2688 | /* Vertos 600 ESD. */ |
| 2689 | { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, }, |
| 2690 | /* |
| 2691 | * Sanyo 3 CD changer uses a non-standard command for CD changing |
| 2692 | * (by default standard ATAPI support for CD changers is used). |
| 2693 | */ |
| 2694 | { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD }, |
| 2695 | { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD }, |
| 2696 | { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD }, |
| 2697 | /* Stingray 8X CD-ROM. */ |
| 2698 | { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12}, |
| 2699 | /* |
| 2700 | * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length |
| 2701 | * mode sense page capabilities size, but older drives break. |
| 2702 | */ |
| 2703 | { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, |
| 2704 | { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, |
| 2705 | /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */ |
| 2706 | { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS }, |
| 2707 | /* |
| 2708 | * Some drives used by Apple don't advertise audio play |
| 2709 | * but they do support reading TOC & audio datas. |
| 2710 | */ |
| 2711 | { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 2712 | { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 2713 | { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 2714 | { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 2715 | { NULL, NULL, 0 } |
| 2716 | }; |
| 2717 | |
| 2718 | static unsigned int ide_cd_flags(struct hd_driveid *id) |
| 2719 | { |
| 2720 | const struct cd_list_entry *cle = ide_cd_quirks_list; |
| 2721 | |
| 2722 | while (cle->id_model) { |
| 2723 | if (strcmp(cle->id_model, id->model) == 0 && |
| 2724 | (cle->id_firmware == NULL || |
| 2725 | strstr(id->fw_rev, cle->id_firmware))) |
| 2726 | return cle->cd_flags; |
| 2727 | cle++; |
| 2728 | } |
| 2729 | |
| 2730 | return 0; |
| 2731 | } |
| 2732 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2733 | static |
| 2734 | int ide_cdrom_setup (ide_drive_t *drive) |
| 2735 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2736 | struct cdrom_info *cd = drive->driver_data; |
| 2737 | struct cdrom_device_info *cdi = &cd->devinfo; |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2738 | struct hd_driveid *id = drive->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2739 | int nslots; |
| 2740 | |
| 2741 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); |
| 2742 | blk_queue_dma_alignment(drive->queue, 31); |
| 2743 | drive->queue->unplug_delay = (1 * HZ) / 1000; |
| 2744 | if (!drive->queue->unplug_delay) |
| 2745 | drive->queue->unplug_delay = 1; |
| 2746 | |
| 2747 | drive->special.all = 0; |
| 2748 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2749 | cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT | |
| 2750 | ide_cd_flags(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2751 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2752 | if ((id->config & 0x0060) == 0x20) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2753 | cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT; |
Bartlomiej Zolnierkiewicz | b8d25de | 2008-02-01 23:09:19 +0100 | [diff] [blame] | 2754 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2755 | if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) && |
| 2756 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2757 | cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD | |
| 2758 | IDE_CD_FLAG_TOCADDR_AS_BCD); |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2759 | else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) && |
| 2760 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2761 | cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD; |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2762 | else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD) |
| 2763 | cdi->sanyo_slot = 3; /* 3 => use CD in slot 0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2764 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2765 | nslots = ide_cdrom_probe_capabilities (drive); |
| 2766 | |
| 2767 | /* |
| 2768 | * set correct block size |
| 2769 | */ |
| 2770 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); |
| 2771 | |
| 2772 | if (drive->autotune == IDE_TUNE_DEFAULT || |
| 2773 | drive->autotune == IDE_TUNE_AUTO) |
| 2774 | drive->dsc_overlap = (drive->next != drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2775 | |
| 2776 | if (ide_cdrom_register(drive, nslots)) { |
| 2777 | 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] | 2778 | cd->devinfo.handle = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2779 | return 1; |
| 2780 | } |
| 2781 | ide_cdrom_add_settings(drive); |
| 2782 | return 0; |
| 2783 | } |
| 2784 | |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 2785 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2786 | static |
| 2787 | sector_t ide_cdrom_capacity (ide_drive_t *drive) |
| 2788 | { |
| 2789 | unsigned long capacity, sectors_per_frame; |
| 2790 | |
| 2791 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) |
| 2792 | return 0; |
| 2793 | |
| 2794 | return capacity * sectors_per_frame; |
| 2795 | } |
Amos Waterland | d97b3214 | 2005-10-30 15:02:10 -0800 | [diff] [blame] | 2796 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2797 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2798 | static void ide_cd_remove(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | { |
| 2800 | struct cdrom_info *info = drive->driver_data; |
| 2801 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2802 | ide_proc_unregister_driver(drive, info->driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2803 | |
| 2804 | del_gendisk(info->disk); |
| 2805 | |
| 2806 | ide_cd_put(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2807 | } |
| 2808 | |
| 2809 | static void ide_cd_release(struct kref *kref) |
| 2810 | { |
| 2811 | struct cdrom_info *info = to_ide_cd(kref); |
| 2812 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 2813 | ide_drive_t *drive = info->drive; |
| 2814 | struct gendisk *g = info->disk; |
| 2815 | |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 2816 | kfree(info->buffer); |
| 2817 | kfree(info->toc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2818 | if (devinfo->handle == drive && unregister_cdrom(devinfo)) |
| 2819 | printk(KERN_ERR "%s: %s failed to unregister device from the cdrom " |
| 2820 | "driver.\n", __FUNCTION__, drive->name); |
| 2821 | drive->dsc_overlap = 0; |
| 2822 | drive->driver_data = NULL; |
| 2823 | blk_queue_prep_rq(drive->queue, NULL); |
| 2824 | g->private_data = NULL; |
| 2825 | put_disk(g); |
| 2826 | kfree(info); |
| 2827 | } |
| 2828 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2829 | static int ide_cd_probe(ide_drive_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2830 | |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 2831 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2832 | static int proc_idecd_read_capacity |
| 2833 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
| 2834 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2835 | ide_drive_t *drive = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2836 | int len; |
| 2837 | |
| 2838 | len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive)); |
| 2839 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
| 2840 | } |
| 2841 | |
| 2842 | static ide_proc_entry_t idecd_proc[] = { |
| 2843 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, |
| 2844 | { NULL, 0, NULL, NULL } |
| 2845 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2846 | #endif |
| 2847 | |
| 2848 | static ide_driver_t ide_cdrom_driver = { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2849 | .gen_driver = { |
Laurent Riffard | 4ef3b8f | 2005-11-18 22:15:40 +0100 | [diff] [blame] | 2850 | .owner = THIS_MODULE, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2851 | .name = "ide-cdrom", |
| 2852 | .bus = &ide_bus_type, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2853 | }, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2854 | .probe = ide_cd_probe, |
| 2855 | .remove = ide_cd_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2856 | .version = IDECD_VERSION, |
| 2857 | .media = ide_cdrom, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2858 | .supports_dsc_overlap = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2859 | .do_request = ide_do_rw_cdrom, |
| 2860 | .end_request = ide_end_request, |
| 2861 | .error = __ide_error, |
| 2862 | .abort = __ide_abort, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2863 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2864 | .proc = idecd_proc, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2865 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2866 | }; |
| 2867 | |
| 2868 | static int idecd_open(struct inode * inode, struct file * file) |
| 2869 | { |
| 2870 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 2871 | struct cdrom_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2872 | int rc = -ENOMEM; |
| 2873 | |
| 2874 | if (!(info = ide_cd_get(disk))) |
| 2875 | return -ENXIO; |
| 2876 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2877 | if (!info->buffer) |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 2878 | info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT); |
| 2879 | |
| 2880 | if (info->buffer) |
| 2881 | rc = cdrom_open(&info->devinfo, inode, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2882 | |
| 2883 | if (rc < 0) |
| 2884 | ide_cd_put(info); |
| 2885 | |
| 2886 | return rc; |
| 2887 | } |
| 2888 | |
| 2889 | static int idecd_release(struct inode * inode, struct file * file) |
| 2890 | { |
| 2891 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 2892 | struct cdrom_info *info = ide_cd_g(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2893 | |
| 2894 | cdrom_release (&info->devinfo, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2895 | |
| 2896 | ide_cd_put(info); |
| 2897 | |
| 2898 | return 0; |
| 2899 | } |
| 2900 | |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 2901 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
| 2902 | { |
| 2903 | struct packet_command cgc; |
| 2904 | char buffer[16]; |
| 2905 | int stat; |
| 2906 | char spindown; |
| 2907 | |
| 2908 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) |
| 2909 | return -EFAULT; |
| 2910 | |
| 2911 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 2912 | |
| 2913 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); |
| 2914 | if (stat) |
| 2915 | return stat; |
| 2916 | |
| 2917 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); |
| 2918 | return cdrom_mode_select(cdi, &cgc); |
| 2919 | } |
| 2920 | |
| 2921 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
| 2922 | { |
| 2923 | struct packet_command cgc; |
| 2924 | char buffer[16]; |
| 2925 | int stat; |
| 2926 | char spindown; |
| 2927 | |
| 2928 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 2929 | |
| 2930 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); |
| 2931 | if (stat) |
| 2932 | return stat; |
| 2933 | |
| 2934 | spindown = buffer[11] & 0x0f; |
| 2935 | if (copy_to_user((void __user *)arg, &spindown, sizeof (char))) |
| 2936 | return -EFAULT; |
| 2937 | return 0; |
| 2938 | } |
| 2939 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2940 | static int idecd_ioctl (struct inode *inode, struct file *file, |
| 2941 | unsigned int cmd, unsigned long arg) |
| 2942 | { |
| 2943 | struct block_device *bdev = inode->i_bdev; |
| 2944 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); |
| 2945 | int err; |
| 2946 | |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 2947 | switch (cmd) { |
| 2948 | case CDROMSETSPINDOWN: |
| 2949 | return idecd_set_spindown(&info->devinfo, arg); |
| 2950 | case CDROMGETSPINDOWN: |
| 2951 | return idecd_get_spindown(&info->devinfo, arg); |
| 2952 | default: |
| 2953 | break; |
| 2954 | } |
| 2955 | |
| 2956 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2957 | if (err == -EINVAL) |
| 2958 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); |
| 2959 | |
| 2960 | return err; |
| 2961 | } |
| 2962 | |
| 2963 | static int idecd_media_changed(struct gendisk *disk) |
| 2964 | { |
| 2965 | struct cdrom_info *info = ide_cd_g(disk); |
| 2966 | return cdrom_media_changed(&info->devinfo); |
| 2967 | } |
| 2968 | |
| 2969 | static int idecd_revalidate_disk(struct gendisk *disk) |
| 2970 | { |
| 2971 | struct cdrom_info *info = ide_cd_g(disk); |
| 2972 | struct request_sense sense; |
| 2973 | cdrom_read_toc(info->drive, &sense); |
| 2974 | return 0; |
| 2975 | } |
| 2976 | |
| 2977 | static struct block_device_operations idecd_ops = { |
| 2978 | .owner = THIS_MODULE, |
| 2979 | .open = idecd_open, |
| 2980 | .release = idecd_release, |
| 2981 | .ioctl = idecd_ioctl, |
| 2982 | .media_changed = idecd_media_changed, |
| 2983 | .revalidate_disk= idecd_revalidate_disk |
| 2984 | }; |
| 2985 | |
| 2986 | /* options */ |
| 2987 | static char *ignore = NULL; |
| 2988 | |
| 2989 | module_param(ignore, charp, 0400); |
| 2990 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); |
| 2991 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2992 | static int ide_cd_probe(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2993 | { |
| 2994 | struct cdrom_info *info; |
| 2995 | struct gendisk *g; |
| 2996 | struct request_sense sense; |
| 2997 | |
| 2998 | if (!strstr("ide-cdrom", drive->driver_req)) |
| 2999 | goto failed; |
| 3000 | if (!drive->present) |
| 3001 | goto failed; |
| 3002 | if (drive->media != ide_cdrom && drive->media != ide_optical) |
| 3003 | goto failed; |
| 3004 | /* skip drives that we were told to ignore */ |
| 3005 | if (ignore != NULL) { |
| 3006 | if (strstr(ignore, drive->name)) { |
| 3007 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); |
| 3008 | goto failed; |
| 3009 | } |
| 3010 | } |
| 3011 | if (drive->scsi) { |
| 3012 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); |
| 3013 | goto failed; |
| 3014 | } |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 3015 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3016 | if (info == NULL) { |
| 3017 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name); |
| 3018 | goto failed; |
| 3019 | } |
| 3020 | |
| 3021 | g = alloc_disk(1 << PARTN_BITS); |
| 3022 | if (!g) |
| 3023 | goto out_free_cd; |
| 3024 | |
| 3025 | ide_init_disk(g, drive); |
| 3026 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 3027 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3028 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3029 | kref_init(&info->kref); |
| 3030 | |
| 3031 | info->drive = drive; |
| 3032 | info->driver = &ide_cdrom_driver; |
| 3033 | info->disk = g; |
| 3034 | |
| 3035 | g->private_data = &info->driver; |
| 3036 | |
| 3037 | drive->driver_data = info; |
| 3038 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3039 | g->minors = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3040 | g->driverfs_dev = &drive->gendev; |
| 3041 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; |
| 3042 | if (ide_cdrom_setup(drive)) { |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 3043 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
Bartlomiej Zolnierkiewicz | 05017db | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 3044 | ide_cd_release(&info->kref); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3045 | goto failed; |
| 3046 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3047 | |
| 3048 | cdrom_read_toc(drive, &sense); |
| 3049 | g->fops = &idecd_ops; |
| 3050 | g->flags |= GENHD_FL_REMOVABLE; |
| 3051 | add_disk(g); |
| 3052 | return 0; |
| 3053 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3054 | out_free_cd: |
| 3055 | kfree(info); |
| 3056 | failed: |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3057 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3058 | } |
| 3059 | |
| 3060 | static void __exit ide_cdrom_exit(void) |
| 3061 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3062 | driver_unregister(&ide_cdrom_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3063 | } |
Bartlomiej Zolnierkiewicz | 17514e8 | 2005-11-19 22:24:35 +0100 | [diff] [blame] | 3064 | |
| 3065 | static int __init ide_cdrom_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3066 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 3067 | return driver_register(&ide_cdrom_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3068 | } |
| 3069 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 3070 | MODULE_ALIAS("ide:*m-cdrom*"); |
Bartlomiej Zolnierkiewicz | 972560f | 2008-02-01 23:09:23 +0100 | [diff] [blame^] | 3071 | MODULE_ALIAS("ide-cd"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3072 | module_init(ide_cdrom_init); |
| 3073 | module_exit(ide_cdrom_exit); |
| 3074 | MODULE_LICENSE("GPL"); |