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 | */ |
Bartlomiej Zolnierkiewicz | 1780299 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 209 | void ide_cd_init_rq(ide_drive_t *drive, struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 228 | ide_cd_init_rq(drive, rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Bartlomiej Zolnierkiewicz | b4ab726 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 629 | static void ide_cd_drain_data(ide_drive_t *drive, int nsects) |
| 630 | { |
| 631 | while (nsects > 0) { |
| 632 | static char dum[SECTOR_SIZE]; |
| 633 | |
| 634 | drive->hwif->atapi_input_bytes(drive, dum, sizeof(dum)); |
| 635 | nsects--; |
| 636 | } |
| 637 | } |
| 638 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | /* |
| 640 | * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector |
| 641 | * buffer. Once the first sector is added, any subsequent sectors are |
| 642 | * assumed to be continuous (until the buffer is cleared). For the first |
| 643 | * sector added, SECTOR is its sector number. (SECTOR is then ignored until |
| 644 | * the buffer is cleared.) |
| 645 | */ |
| 646 | static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector, |
| 647 | int sectors_to_transfer) |
| 648 | { |
| 649 | struct cdrom_info *info = drive->driver_data; |
| 650 | |
| 651 | /* Number of sectors to read into the buffer. */ |
| 652 | int sectors_to_buffer = min_t(int, sectors_to_transfer, |
| 653 | (SECTOR_BUFFER_SIZE >> SECTOR_BITS) - |
| 654 | info->nsectors_buffered); |
| 655 | |
| 656 | char *dest; |
| 657 | |
| 658 | /* If we couldn't get a buffer, don't try to buffer anything... */ |
| 659 | if (info->buffer == NULL) |
| 660 | sectors_to_buffer = 0; |
| 661 | |
| 662 | /* If this is the first sector in the buffer, remember its number. */ |
| 663 | if (info->nsectors_buffered == 0) |
| 664 | info->sector_buffered = sector; |
| 665 | |
| 666 | /* Read the data into the buffer. */ |
| 667 | dest = info->buffer + info->nsectors_buffered * SECTOR_SIZE; |
| 668 | while (sectors_to_buffer > 0) { |
| 669 | HWIF(drive)->atapi_input_bytes(drive, dest, SECTOR_SIZE); |
| 670 | --sectors_to_buffer; |
| 671 | --sectors_to_transfer; |
| 672 | ++info->nsectors_buffered; |
| 673 | dest += SECTOR_SIZE; |
| 674 | } |
| 675 | |
| 676 | /* Throw away any remaining data. */ |
Bartlomiej Zolnierkiewicz | b4ab726 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 677 | ide_cd_drain_data(drive, sectors_to_transfer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | } |
| 679 | |
| 680 | /* |
| 681 | * Check the contents of the interrupt reason register from the cdrom |
| 682 | * and attempt to recover if there are problems. Returns 0 if everything's |
| 683 | * ok; nonzero if the request has been terminated. |
| 684 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 685 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason) |
| 687 | { |
| 688 | if (ireason == 2) |
| 689 | return 0; |
| 690 | else if (ireason == 0) { |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 691 | ide_hwif_t *hwif = drive->hwif; |
| 692 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | /* Whoops... The drive is expecting to receive data from us! */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 694 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
| 695 | drive->name, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | |
| 697 | /* Throw some data at the drive so it doesn't hang |
| 698 | and quit this request. */ |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 699 | ide_cd_pad_transfer(drive, hwif->atapi_output_bytes, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | } else if (ireason == 1) { |
| 701 | /* Some drives (ASUS) seem to tell us that status |
| 702 | * info is available. just get it and ignore. |
| 703 | */ |
| 704 | (void) HWIF(drive)->INB(IDE_STATUS_REG); |
| 705 | return 0; |
| 706 | } else { |
| 707 | /* Drive wants a command packet, or invalid ireason... */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 708 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
| 709 | drive->name, __FUNCTION__, ireason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | } |
| 711 | |
| 712 | cdrom_end_request(drive, 0); |
| 713 | return -1; |
| 714 | } |
| 715 | |
| 716 | /* |
Bartlomiej Zolnierkiewicz | 64814f2 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 717 | * Assume that the drive will always provide data in multiples of at least |
| 718 | * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise. |
| 719 | */ |
| 720 | static int ide_cd_check_transfer_size(ide_drive_t *drive, int len) |
| 721 | { |
| 722 | struct cdrom_info *cd = drive->driver_data; |
| 723 | |
| 724 | if ((len % SECTOR_SIZE) == 0) |
| 725 | return 0; |
| 726 | |
| 727 | printk(KERN_ERR "%s: %s: Bad transfer size %d\n", |
| 728 | drive->name, __FUNCTION__, len); |
| 729 | |
| 730 | if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES) |
| 731 | printk(KERN_ERR " This drive is not supported by " |
| 732 | "this version of the driver\n"); |
| 733 | else { |
| 734 | printk(KERN_ERR " Trying to limit transfer sizes\n"); |
| 735 | cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; |
| 736 | } |
| 737 | |
| 738 | return 1; |
| 739 | } |
| 740 | |
| 741 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | * Try to satisfy some of the current read request from our cached data. |
| 743 | * Returns nonzero if the request has been completed, zero otherwise. |
| 744 | */ |
| 745 | static int cdrom_read_from_buffer (ide_drive_t *drive) |
| 746 | { |
| 747 | struct cdrom_info *info = drive->driver_data; |
| 748 | struct request *rq = HWGROUP(drive)->rq; |
| 749 | unsigned short sectors_per_frame; |
| 750 | |
| 751 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 752 | |
| 753 | /* Can't do anything if there's no buffer. */ |
| 754 | if (info->buffer == NULL) return 0; |
| 755 | |
| 756 | /* Loop while this request needs data and the next block is present |
| 757 | in our cache. */ |
| 758 | while (rq->nr_sectors > 0 && |
| 759 | rq->sector >= info->sector_buffered && |
| 760 | rq->sector < info->sector_buffered + info->nsectors_buffered) { |
| 761 | if (rq->current_nr_sectors == 0) |
| 762 | cdrom_end_request(drive, 1); |
| 763 | |
| 764 | memcpy (rq->buffer, |
| 765 | info->buffer + |
| 766 | (rq->sector - info->sector_buffered) * SECTOR_SIZE, |
| 767 | SECTOR_SIZE); |
| 768 | rq->buffer += SECTOR_SIZE; |
| 769 | --rq->current_nr_sectors; |
| 770 | --rq->nr_sectors; |
| 771 | ++rq->sector; |
| 772 | } |
| 773 | |
| 774 | /* If we've satisfied the current request, |
| 775 | terminate it successfully. */ |
| 776 | if (rq->nr_sectors == 0) { |
| 777 | cdrom_end_request(drive, 1); |
| 778 | return -1; |
| 779 | } |
| 780 | |
| 781 | /* Move on to the next buffer if needed. */ |
| 782 | if (rq->current_nr_sectors == 0) |
| 783 | cdrom_end_request(drive, 1); |
| 784 | |
| 785 | /* If this condition does not hold, then the kluge i use to |
| 786 | represent the number of sectors to skip at the start of a transfer |
| 787 | will fail. I think that this will never happen, but let's be |
| 788 | paranoid and check. */ |
| 789 | if (rq->current_nr_sectors < bio_cur_sectors(rq->bio) && |
| 790 | (rq->sector & (sectors_per_frame - 1))) { |
| 791 | printk(KERN_ERR "%s: cdrom_read_from_buffer: buffer botch (%ld)\n", |
| 792 | drive->name, (long)rq->sector); |
| 793 | cdrom_end_request(drive, 0); |
| 794 | return -1; |
| 795 | } |
| 796 | |
| 797 | return 0; |
| 798 | } |
| 799 | |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 800 | static ide_startstop_t cdrom_rw_intr(ide_drive_t *); |
| 801 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | /* |
| 803 | * Routine to send a read packet command to the drive. |
| 804 | * This is usually called directly from cdrom_start_read. |
| 805 | * However, for drq_interrupt devices, it is called from an interrupt |
| 806 | * when the drive is ready to accept the command. |
| 807 | */ |
| 808 | static ide_startstop_t cdrom_start_read_continuation (ide_drive_t *drive) |
| 809 | { |
| 810 | struct request *rq = HWGROUP(drive)->rq; |
| 811 | unsigned short sectors_per_frame; |
| 812 | int nskip; |
| 813 | |
| 814 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 815 | |
| 816 | /* If the requested sector doesn't start on a cdrom block boundary, |
| 817 | we must adjust the start of the transfer so that it does, |
| 818 | and remember to skip the first few sectors. |
| 819 | If the CURRENT_NR_SECTORS field is larger than the size |
| 820 | of the buffer, it will mean that we're to skip a number |
| 821 | of sectors equal to the amount by which CURRENT_NR_SECTORS |
| 822 | is larger than the buffer size. */ |
| 823 | nskip = rq->sector & (sectors_per_frame - 1); |
| 824 | if (nskip > 0) { |
| 825 | /* Sanity check... */ |
| 826 | if (rq->current_nr_sectors != bio_cur_sectors(rq->bio) && |
| 827 | (rq->sector & (sectors_per_frame - 1))) { |
| 828 | printk(KERN_ERR "%s: cdrom_start_read_continuation: buffer botch (%u)\n", |
| 829 | drive->name, rq->current_nr_sectors); |
| 830 | cdrom_end_request(drive, 0); |
| 831 | return ide_stopped; |
| 832 | } |
| 833 | rq->current_nr_sectors += nskip; |
| 834 | } |
| 835 | |
| 836 | /* Set up the command */ |
| 837 | rq->timeout = ATAPI_WAIT_PC; |
| 838 | |
| 839 | /* Send the command to the drive and return. */ |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 840 | return cdrom_transfer_packet_command(drive, rq, cdrom_rw_intr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | } |
| 842 | |
| 843 | |
| 844 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ |
| 845 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ |
| 846 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ |
| 847 | |
| 848 | static ide_startstop_t cdrom_seek_intr (ide_drive_t *drive) |
| 849 | { |
| 850 | struct cdrom_info *info = drive->driver_data; |
| 851 | int stat; |
| 852 | static int retry = 10; |
| 853 | |
| 854 | if (cdrom_decode_status(drive, 0, &stat)) |
| 855 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 856 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 857 | info->cd_flags |= IDE_CD_FLAG_SEEKING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | |
| 859 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { |
| 860 | if (--retry == 0) { |
| 861 | /* |
| 862 | * this condition is far too common, to bother |
| 863 | * users about it |
| 864 | */ |
| 865 | /* printk("%s: disabled DSC seek overlap\n", drive->name);*/ |
| 866 | drive->dsc_overlap = 0; |
| 867 | } |
| 868 | } |
| 869 | return ide_stopped; |
| 870 | } |
| 871 | |
| 872 | static ide_startstop_t cdrom_start_seek_continuation (ide_drive_t *drive) |
| 873 | { |
| 874 | struct request *rq = HWGROUP(drive)->rq; |
| 875 | sector_t frame = rq->sector; |
| 876 | |
| 877 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); |
| 878 | |
| 879 | memset(rq->cmd, 0, sizeof(rq->cmd)); |
| 880 | rq->cmd[0] = GPCMD_SEEK; |
| 881 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); |
| 882 | |
| 883 | rq->timeout = ATAPI_WAIT_PC; |
| 884 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); |
| 885 | } |
| 886 | |
| 887 | static ide_startstop_t cdrom_start_seek (ide_drive_t *drive, unsigned int block) |
| 888 | { |
| 889 | struct cdrom_info *info = drive->driver_data; |
| 890 | |
| 891 | info->dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | info->start_seek = jiffies; |
| 893 | return cdrom_start_packet_command(drive, 0, cdrom_start_seek_continuation); |
| 894 | } |
| 895 | |
| 896 | /* Fix up a possibly partially-processed request so that we can |
| 897 | start it over entirely, or even put it back on the request queue. */ |
| 898 | static void restore_request (struct request *rq) |
| 899 | { |
| 900 | if (rq->buffer != bio_data(rq->bio)) { |
| 901 | sector_t n = (rq->buffer - (char *) bio_data(rq->bio)) / SECTOR_SIZE; |
| 902 | |
| 903 | rq->buffer = bio_data(rq->bio); |
| 904 | rq->nr_sectors += n; |
| 905 | rq->sector -= n; |
| 906 | } |
| 907 | rq->hard_cur_sectors = rq->current_nr_sectors = bio_cur_sectors(rq->bio); |
| 908 | rq->hard_nr_sectors = rq->nr_sectors; |
| 909 | rq->hard_sector = rq->sector; |
| 910 | rq->q->prep_rq_fn(rq->q, rq); |
| 911 | } |
| 912 | |
| 913 | /* |
| 914 | * Start a read request from the CD-ROM. |
| 915 | */ |
| 916 | static ide_startstop_t cdrom_start_read (ide_drive_t *drive, unsigned int block) |
| 917 | { |
| 918 | struct cdrom_info *info = drive->driver_data; |
| 919 | struct request *rq = HWGROUP(drive)->rq; |
| 920 | unsigned short sectors_per_frame; |
| 921 | |
| 922 | sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 923 | |
| 924 | /* We may be retrying this request after an error. Fix up |
| 925 | any weirdness which might be present in the request packet. */ |
| 926 | restore_request(rq); |
| 927 | |
| 928 | /* Satisfy whatever we can of this request from our cached sector. */ |
| 929 | if (cdrom_read_from_buffer(drive)) |
| 930 | return ide_stopped; |
| 931 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | /* Clear the local sector buffer. */ |
| 933 | info->nsectors_buffered = 0; |
| 934 | |
| 935 | /* use dma, if possible. */ |
| 936 | info->dma = drive->using_dma; |
| 937 | if ((rq->sector & (sectors_per_frame - 1)) || |
| 938 | (rq->nr_sectors & (sectors_per_frame - 1))) |
| 939 | info->dma = 0; |
| 940 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | /* Start sending the read request to the drive. */ |
| 942 | return cdrom_start_packet_command(drive, 32768, cdrom_start_read_continuation); |
| 943 | } |
| 944 | |
| 945 | /**************************************************************************** |
| 946 | * Execute all other packet commands. |
| 947 | */ |
| 948 | |
Bartlomiej Zolnierkiewicz | 8ee69f5 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 949 | static void ide_cd_request_sense_fixup(struct request *rq) |
| 950 | { |
| 951 | /* |
| 952 | * Some of the trailing request sense fields are optional, |
| 953 | * and some drives don't send them. Sigh. |
| 954 | */ |
| 955 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && |
| 956 | rq->data_len > 0 && rq->data_len <= 5) |
| 957 | while (rq->data_len > 0) { |
| 958 | *(u8 *)rq->data++ = 0; |
| 959 | --rq->data_len; |
| 960 | } |
| 961 | } |
| 962 | |
Bartlomiej Zolnierkiewicz | 1780299 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 963 | int ide_cd_queue_pc(ide_drive_t *drive, struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | { |
| 965 | struct request_sense sense; |
| 966 | int retries = 10; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 967 | unsigned int flags = rq->cmd_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | |
| 969 | if (rq->sense == NULL) |
| 970 | rq->sense = &sense; |
| 971 | |
| 972 | /* Start of retry loop. */ |
| 973 | do { |
| 974 | int error; |
| 975 | unsigned long time = jiffies; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 976 | rq->cmd_flags = flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | |
| 978 | error = ide_do_drive_cmd(drive, rq, ide_wait); |
| 979 | time = jiffies - time; |
| 980 | |
| 981 | /* FIXME: we should probably abort/retry or something |
| 982 | * in case of failure */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 983 | if (rq->cmd_flags & REQ_FAILED) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | /* The request failed. Retry if it was due to a unit |
| 985 | attention status |
| 986 | (usually means media was changed). */ |
| 987 | struct request_sense *reqbuf = rq->sense; |
| 988 | |
| 989 | if (reqbuf->sense_key == UNIT_ATTENTION) |
| 990 | cdrom_saw_media_change(drive); |
| 991 | else if (reqbuf->sense_key == NOT_READY && |
| 992 | reqbuf->asc == 4 && reqbuf->ascq != 4) { |
| 993 | /* The drive is in the process of loading |
| 994 | a disk. Retry, but wait a little to give |
| 995 | the drive time to complete the load. */ |
| 996 | ssleep(2); |
| 997 | } else { |
| 998 | /* Otherwise, don't retry. */ |
| 999 | retries = 0; |
| 1000 | } |
| 1001 | --retries; |
| 1002 | } |
| 1003 | |
| 1004 | /* End of retry loop. */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1005 | } while ((rq->cmd_flags & REQ_FAILED) && retries >= 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | |
| 1007 | /* Return an error if the command failed. */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1008 | return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | } |
| 1010 | |
| 1011 | /* |
| 1012 | * Write handling |
| 1013 | */ |
Arjan van de Ven | 858119e | 2006-01-14 13:20:43 -0800 | [diff] [blame] | 1014 | 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] | 1015 | { |
| 1016 | /* Two notes about IDE interrupt reason here - 0 means that |
| 1017 | * the drive wants to receive data from us, 2 means that |
| 1018 | * the drive is expecting to transfer data to us. |
| 1019 | */ |
| 1020 | if (ireason == 0) |
| 1021 | return 0; |
| 1022 | else if (ireason == 2) { |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1023 | ide_hwif_t *hwif = drive->hwif; |
| 1024 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | /* Whoops... The drive wants to send data. */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1026 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
| 1027 | drive->name, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1029 | ide_cd_pad_transfer(drive, hwif->atapi_input_bytes, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | } else { |
| 1031 | /* Drive wants a command packet, or invalid ireason... */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1032 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
| 1033 | drive->name, __FUNCTION__, ireason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | } |
| 1035 | |
| 1036 | cdrom_end_request(drive, 0); |
| 1037 | return 1; |
| 1038 | } |
| 1039 | |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1040 | /* |
| 1041 | * Called from blk_end_request_callback() after the data of the request |
| 1042 | * is completed and before the request is completed. |
| 1043 | * By returning value '1', blk_end_request_callback() returns immediately |
| 1044 | * without completing the request. |
| 1045 | */ |
| 1046 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) |
| 1047 | { |
| 1048 | return 1; |
| 1049 | } |
| 1050 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | /* |
| 1052 | * best way to deal with dma that is not sector aligned right now... note |
| 1053 | * that in this path we are not using ->data or ->buffer at all. this irs |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1054 | * can replace cdrom_rw_intr() in the future. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1055 | */ |
| 1056 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
| 1057 | { |
| 1058 | struct cdrom_info *info = drive->driver_data; |
| 1059 | struct request *rq = HWGROUP(drive)->rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | xfer_func_t *xferfunc; |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1061 | ide_expiry_t *expiry; |
| 1062 | int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0; |
| 1063 | int write = (rq_data_dir(rq) == WRITE) ? 1 : 0; |
| 1064 | unsigned int timeout; |
| 1065 | u8 lowcyl, highcyl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | |
| 1067 | /* Check for errors. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | dma = info->dma; |
| 1069 | if (dma) { |
| 1070 | info->dma = 0; |
| 1071 | dma_error = HWIF(drive)->ide_dma_end(drive); |
Bartlomiej Zolnierkiewicz | eba15fb | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1072 | if (dma_error) { |
| 1073 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1074 | write ? "write" : "read"); |
Bartlomiej Zolnierkiewicz | eba15fb | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1075 | ide_dma_off(drive); |
| 1076 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | } |
| 1078 | |
| 1079 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1080 | return ide_stopped; |
| 1081 | |
| 1082 | /* |
| 1083 | * using dma, transfer is complete now |
| 1084 | */ |
| 1085 | if (dma) { |
Bartlomiej Zolnierkiewicz | eba15fb | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1086 | if (dma_error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | return ide_error(drive, "dma error", stat); |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1088 | goto end_request; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | } |
| 1090 | |
| 1091 | /* |
| 1092 | * ok we fall to pio :/ |
| 1093 | */ |
| 1094 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
| 1095 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1096 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1097 | |
| 1098 | len = lowcyl + (256 * highcyl); |
| 1099 | thislen = rq->data_len; |
| 1100 | if (thislen > len) |
| 1101 | thislen = len; |
| 1102 | |
| 1103 | /* |
| 1104 | * If DRQ is clear, the command has completed. |
| 1105 | */ |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1106 | if ((stat & DRQ_STAT) == 0) { |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1107 | if (!blk_pc_request(rq)) { |
| 1108 | ide_cd_request_sense_fixup(rq); |
| 1109 | /* Complain if we still have data left to transfer. */ |
| 1110 | uptodate = rq->data_len ? 0 : 1; |
| 1111 | } |
| 1112 | goto end_request; |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1113 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | |
| 1115 | /* |
| 1116 | * check which way to transfer data |
| 1117 | */ |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1118 | if (blk_pc_request(rq) && rq_data_dir(rq) == WRITE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | /* |
| 1120 | * write to drive |
| 1121 | */ |
| 1122 | if (cdrom_write_check_ireason(drive, len, ireason)) |
| 1123 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1124 | } else if (blk_pc_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | /* |
| 1126 | * read from drive |
| 1127 | */ |
| 1128 | if (cdrom_read_check_ireason(drive, len, ireason)) |
| 1129 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1130 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1132 | if (ireason == 0) { |
| 1133 | write = 1; |
| 1134 | xferfunc = HWIF(drive)->atapi_output_bytes; |
| 1135 | } else if (ireason == 2 || (ireason == 1 && blk_pc_request(rq))) { |
| 1136 | write = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | xferfunc = HWIF(drive)->atapi_input_bytes; |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1138 | } else { |
| 1139 | printk(KERN_ERR "%s: %s: The drive " |
| 1140 | "appears confused (ireason = 0x%02x). " |
| 1141 | "Trying to recover by ending request.\n", |
| 1142 | drive->name, __FUNCTION__, ireason); |
| 1143 | goto end_request; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | } |
| 1145 | |
| 1146 | /* |
| 1147 | * transfer data |
| 1148 | */ |
| 1149 | while (thislen > 0) { |
| 1150 | int blen = blen = rq->data_len; |
| 1151 | char *ptr = rq->data; |
| 1152 | |
| 1153 | /* |
| 1154 | * bio backed? |
| 1155 | */ |
| 1156 | if (rq->bio) { |
| 1157 | ptr = bio_data(rq->bio); |
| 1158 | blen = bio_iovec(rq->bio)->bv_len; |
| 1159 | } |
| 1160 | |
| 1161 | if (!ptr) { |
Bartlomiej Zolnierkiewicz | 03f537d | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1162 | printk(KERN_ERR "%s: confused, missing data\n", |
| 1163 | drive->name); |
| 1164 | blk_dump_rq_flags(rq, rq_data_dir(rq) |
| 1165 | ? "cdrom_newpc_intr, write" |
| 1166 | : "cdrom_newpc_intr, read"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | break; |
| 1168 | } |
| 1169 | |
| 1170 | if (blen > thislen) |
| 1171 | blen = thislen; |
| 1172 | |
| 1173 | xferfunc(drive, ptr, blen); |
| 1174 | |
| 1175 | thislen -= blen; |
| 1176 | len -= blen; |
| 1177 | rq->data_len -= blen; |
| 1178 | |
| 1179 | if (rq->bio) |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1180 | /* |
| 1181 | * The request can't be completed until DRQ is cleared. |
| 1182 | * So complete the data, but don't complete the request |
| 1183 | * using the dummy function for the callback feature |
| 1184 | * of blk_end_request_callback(). |
| 1185 | */ |
| 1186 | blk_end_request_callback(rq, 0, blen, |
| 1187 | cdrom_newpc_intr_dummy_cb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1188 | else |
| 1189 | rq->data += blen; |
| 1190 | } |
| 1191 | |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1192 | if (write && blk_sense_request(rq)) |
| 1193 | rq->sense_len += thislen; |
| 1194 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | /* |
| 1196 | * pad, if necessary |
| 1197 | */ |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1198 | if (len > 0) |
| 1199 | ide_cd_pad_transfer(drive, xferfunc, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1201 | if (blk_pc_request(rq)) { |
| 1202 | timeout = rq->timeout; |
| 1203 | expiry = NULL; |
| 1204 | } else { |
| 1205 | timeout = ATAPI_WAIT_PC; |
| 1206 | expiry = cdrom_timer_expiry; |
| 1207 | } |
| 1208 | |
| 1209 | ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | return ide_started; |
Bartlomiej Zolnierkiewicz | ff1bfbc | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1211 | |
| 1212 | end_request: |
| 1213 | if (blk_pc_request(rq)) { |
| 1214 | unsigned long flags; |
| 1215 | |
| 1216 | spin_lock_irqsave(&ide_lock, flags); |
| 1217 | if (__blk_end_request(rq, 0, rq->data_len)) |
| 1218 | BUG(); |
| 1219 | HWGROUP(drive)->rq = NULL; |
| 1220 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1221 | } else { |
| 1222 | if (!uptodate) |
| 1223 | rq->cmd_flags |= REQ_FAILED; |
| 1224 | cdrom_end_request(drive, uptodate); |
| 1225 | } |
| 1226 | return ide_stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | } |
| 1228 | |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1229 | static ide_startstop_t cdrom_rw_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1230 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1231 | struct cdrom_info *info = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1232 | struct request *rq = HWGROUP(drive)->rq; |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1233 | xfer_func_t *xferfunc; |
| 1234 | int stat, ireason, len, sectors_to_transfer, uptodate, nskip; |
| 1235 | int dma_error = 0, dma = info->dma, write = rq_data_dir(rq) == WRITE; |
| 1236 | u8 lowcyl = 0, highcyl = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1237 | |
| 1238 | /* Check for errors. */ |
| 1239 | if (dma) { |
| 1240 | info->dma = 0; |
Bartlomiej Zolnierkiewicz | b481b23 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1241 | dma_error = HWIF(drive)->ide_dma_end(drive); |
| 1242 | if (dma_error) { |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1243 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, |
| 1244 | write ? "write" : "read"); |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 1245 | ide_dma_off(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1246 | } |
| 1247 | } |
| 1248 | |
| 1249 | if (cdrom_decode_status(drive, 0, &stat)) |
| 1250 | return ide_stopped; |
| 1251 | |
| 1252 | /* |
| 1253 | * using dma, transfer is complete now |
| 1254 | */ |
| 1255 | if (dma) { |
| 1256 | if (dma_error) |
| 1257 | return ide_error(drive, "dma error", stat); |
| 1258 | |
| 1259 | ide_end_request(drive, 1, rq->nr_sectors); |
| 1260 | return ide_stopped; |
| 1261 | } |
| 1262 | |
| 1263 | /* Read the interrupt reason and the transfer length. */ |
Bartlomiej Zolnierkiewicz | 31a7119 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1264 | ireason = HWIF(drive)->INB(IDE_IREASON_REG) & 0x3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1265 | lowcyl = HWIF(drive)->INB(IDE_BCOUNTL_REG); |
| 1266 | highcyl = HWIF(drive)->INB(IDE_BCOUNTH_REG); |
| 1267 | |
| 1268 | len = lowcyl + (256 * highcyl); |
| 1269 | |
| 1270 | /* If DRQ is clear, the command has completed. */ |
| 1271 | if ((stat & DRQ_STAT) == 0) { |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1272 | /* |
| 1273 | * If we're not done reading/writing, complain. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | * Otherwise, complete the command normally. |
| 1275 | */ |
| 1276 | uptodate = 1; |
| 1277 | if (rq->current_nr_sectors > 0) { |
Bartlomiej Zolnierkiewicz | b481b23 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1278 | printk(KERN_ERR "%s: %s: data underrun (%d blocks)\n", |
| 1279 | drive->name, __FUNCTION__, |
| 1280 | rq->current_nr_sectors); |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1281 | if (!write) |
| 1282 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | uptodate = 0; |
| 1284 | } |
| 1285 | cdrom_end_request(drive, uptodate); |
| 1286 | return ide_stopped; |
| 1287 | } |
| 1288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | sectors_to_transfer = len / SECTOR_SIZE; |
| 1290 | |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1291 | /* Check that the drive is expecting to do the same thing we are. */ |
| 1292 | if (write) { |
| 1293 | if (cdrom_write_check_ireason(drive, len, ireason)) |
| 1294 | return ide_stopped; |
| 1295 | |
| 1296 | xferfunc = HWIF(drive)->atapi_output_bytes; |
| 1297 | } else { |
| 1298 | if (cdrom_read_check_ireason(drive, len, ireason)) |
| 1299 | return ide_stopped; |
| 1300 | |
| 1301 | if (ide_cd_check_transfer_size(drive, len)) { |
| 1302 | cdrom_end_request(drive, 0); |
| 1303 | return ide_stopped; |
| 1304 | } |
| 1305 | |
| 1306 | /* |
| 1307 | * First, figure out if we need to bit-bucket |
| 1308 | * any of the leading sectors. |
| 1309 | */ |
| 1310 | nskip = min_t(int, rq->current_nr_sectors |
| 1311 | - bio_cur_sectors(rq->bio), |
| 1312 | sectors_to_transfer); |
| 1313 | |
| 1314 | if (nskip > 0) { |
| 1315 | ide_cd_drain_data(drive, nskip); |
| 1316 | rq->current_nr_sectors -= nskip; |
| 1317 | sectors_to_transfer -= nskip; |
| 1318 | } |
| 1319 | |
| 1320 | xferfunc = HWIF(drive)->atapi_input_bytes; |
| 1321 | } |
| 1322 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1323 | /* |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1324 | * now loop and read/write the data |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1325 | */ |
| 1326 | while (sectors_to_transfer > 0) { |
| 1327 | int this_transfer; |
| 1328 | |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1329 | /* |
| 1330 | * If we've filled the present buffer but there's another |
| 1331 | * chained buffer after it, move on. |
| 1332 | */ |
| 1333 | if (!write && rq->current_nr_sectors == 0 && rq->nr_sectors) |
| 1334 | cdrom_end_request(drive, 1); |
| 1335 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1336 | if (!rq->current_nr_sectors) { |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1337 | if (!write) |
| 1338 | /* |
| 1339 | * If the buffers are full, cache the rest |
| 1340 | * of the data in our internal buffer. |
| 1341 | */ |
| 1342 | cdrom_buffer_sectors(drive, rq->sector, |
| 1343 | sectors_to_transfer); |
| 1344 | else |
| 1345 | printk(KERN_ERR "%s: %s: confused, missing " |
| 1346 | "data\n", |
| 1347 | drive->name, __FUNCTION__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | break; |
| 1349 | } |
| 1350 | |
| 1351 | /* |
| 1352 | * Figure out how many sectors we can transfer |
| 1353 | */ |
| 1354 | this_transfer = min_t(int, sectors_to_transfer, rq->current_nr_sectors); |
| 1355 | |
| 1356 | while (this_transfer > 0) { |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1357 | xferfunc(drive, rq->buffer, SECTOR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1358 | rq->buffer += SECTOR_SIZE; |
| 1359 | --rq->nr_sectors; |
| 1360 | --rq->current_nr_sectors; |
| 1361 | ++rq->sector; |
| 1362 | --this_transfer; |
| 1363 | --sectors_to_transfer; |
| 1364 | } |
| 1365 | |
| 1366 | /* |
| 1367 | * current buffer complete, move on |
| 1368 | */ |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1369 | if (write && rq->current_nr_sectors == 0 && rq->nr_sectors) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | cdrom_end_request(drive, 1); |
| 1371 | } |
| 1372 | |
| 1373 | /* re-arm handler */ |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1374 | ide_set_handler(drive, cdrom_rw_intr, ATAPI_WAIT_PC, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | return ide_started; |
| 1376 | } |
| 1377 | |
| 1378 | static ide_startstop_t cdrom_start_write_cont(ide_drive_t *drive) |
| 1379 | { |
| 1380 | struct request *rq = HWGROUP(drive)->rq; |
| 1381 | |
| 1382 | #if 0 /* the immediate bit */ |
| 1383 | rq->cmd[1] = 1 << 3; |
| 1384 | #endif |
| 1385 | rq->timeout = ATAPI_WAIT_PC; |
| 1386 | |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame^] | 1387 | return cdrom_transfer_packet_command(drive, rq, cdrom_rw_intr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1388 | } |
| 1389 | |
| 1390 | static ide_startstop_t cdrom_start_write(ide_drive_t *drive, struct request *rq) |
| 1391 | { |
| 1392 | struct cdrom_info *info = drive->driver_data; |
| 1393 | struct gendisk *g = info->disk; |
| 1394 | unsigned short sectors_per_frame = queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1395 | |
| 1396 | /* |
| 1397 | * writes *must* be hardware frame aligned |
| 1398 | */ |
| 1399 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || |
| 1400 | (rq->sector & (sectors_per_frame - 1))) { |
| 1401 | cdrom_end_request(drive, 0); |
| 1402 | return ide_stopped; |
| 1403 | } |
| 1404 | |
| 1405 | /* |
| 1406 | * disk has become write protected |
| 1407 | */ |
| 1408 | if (g->policy) { |
| 1409 | cdrom_end_request(drive, 0); |
| 1410 | return ide_stopped; |
| 1411 | } |
| 1412 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | info->nsectors_buffered = 0; |
| 1414 | |
| 1415 | /* use dma, if possible. we don't need to check more, since we |
| 1416 | * know that the transfer is always (at least!) frame aligned */ |
| 1417 | info->dma = drive->using_dma ? 1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1418 | |
| 1419 | info->devinfo.media_written = 1; |
| 1420 | |
| 1421 | /* Start sending the write request to the drive. */ |
| 1422 | return cdrom_start_packet_command(drive, 32768, cdrom_start_write_cont); |
| 1423 | } |
| 1424 | |
| 1425 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) |
| 1426 | { |
| 1427 | struct request *rq = HWGROUP(drive)->rq; |
| 1428 | |
| 1429 | if (!rq->timeout) |
| 1430 | rq->timeout = ATAPI_WAIT_PC; |
| 1431 | |
| 1432 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
| 1433 | } |
| 1434 | |
| 1435 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) |
| 1436 | { |
| 1437 | struct cdrom_info *info = drive->driver_data; |
| 1438 | |
Bartlomiej Zolnierkiewicz | c9f56a8 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 1439 | if (blk_pc_request(rq)) |
| 1440 | rq->cmd_flags |= REQ_QUIET; |
| 1441 | else |
| 1442 | rq->cmd_flags &= ~REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | |
| 1444 | info->dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | |
| 1446 | /* |
| 1447 | * sg request |
| 1448 | */ |
| 1449 | if (rq->bio) { |
| 1450 | int mask = drive->queue->dma_alignment; |
| 1451 | unsigned long addr = (unsigned long) page_address(bio_page(rq->bio)); |
| 1452 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | info->dma = drive->using_dma; |
| 1454 | |
| 1455 | /* |
| 1456 | * check if dma is safe |
Linus Torvalds | 5d9e4ea | 2005-05-27 07:36:17 -0700 | [diff] [blame] | 1457 | * |
| 1458 | * NOTE! The "len" and "addr" checks should possibly have |
| 1459 | * separate masks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | */ |
Jens Axboe | 4e7c681 | 2005-05-31 17:47:36 +0200 | [diff] [blame] | 1461 | if ((rq->data_len & 15) || (addr & mask)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1462 | info->dma = 0; |
| 1463 | } |
| 1464 | |
| 1465 | /* Start sending the command to the drive. */ |
| 1466 | return cdrom_start_packet_command(drive, rq->data_len, cdrom_do_newpc_cont); |
| 1467 | } |
| 1468 | |
| 1469 | /**************************************************************************** |
| 1470 | * cdrom driver request routine. |
| 1471 | */ |
| 1472 | static ide_startstop_t |
| 1473 | ide_do_rw_cdrom (ide_drive_t *drive, struct request *rq, sector_t block) |
| 1474 | { |
| 1475 | ide_startstop_t action; |
| 1476 | struct cdrom_info *info = drive->driver_data; |
| 1477 | |
| 1478 | if (blk_fs_request(rq)) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1479 | if (info->cd_flags & IDE_CD_FLAG_SEEKING) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1480 | unsigned long elapsed = jiffies - info->start_seek; |
| 1481 | int stat = HWIF(drive)->INB(IDE_STATUS_REG); |
| 1482 | |
| 1483 | if ((stat & SEEK_STAT) != SEEK_STAT) { |
| 1484 | if (elapsed < IDECD_SEEK_TIMEOUT) { |
| 1485 | ide_stall_queue(drive, IDECD_SEEK_TIMER); |
| 1486 | return ide_stopped; |
| 1487 | } |
| 1488 | printk (KERN_ERR "%s: DSC timeout\n", drive->name); |
| 1489 | } |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1490 | info->cd_flags &= ~IDE_CD_FLAG_SEEKING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1491 | } |
| 1492 | if ((rq_data_dir(rq) == READ) && IDE_LARGE_SEEK(info->last_block, block, IDECD_SEEK_THRESHOLD) && drive->dsc_overlap) { |
| 1493 | action = cdrom_start_seek(drive, block); |
| 1494 | } else { |
| 1495 | if (rq_data_dir(rq) == READ) |
| 1496 | action = cdrom_start_read(drive, block); |
| 1497 | else |
| 1498 | action = cdrom_start_write(drive, rq); |
| 1499 | } |
| 1500 | info->last_block = block; |
| 1501 | return action; |
Bartlomiej Zolnierkiewicz | c9f56a8 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 1502 | } else if (blk_sense_request(rq) || blk_pc_request(rq) || |
Jens Axboe | cea2885 | 2006-10-12 15:08:45 +0200 | [diff] [blame] | 1503 | rq->cmd_type == REQ_TYPE_ATA_PC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | return cdrom_do_block_pc(drive, rq); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1505 | } else if (blk_special_request(rq)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1506 | /* |
| 1507 | * right now this can only be a reset... |
| 1508 | */ |
| 1509 | cdrom_end_request(drive, 1); |
| 1510 | return ide_stopped; |
| 1511 | } |
| 1512 | |
| 1513 | blk_dump_rq_flags(rq, "ide-cd bad flags"); |
| 1514 | cdrom_end_request(drive, 0); |
| 1515 | return ide_stopped; |
| 1516 | } |
| 1517 | |
| 1518 | |
| 1519 | |
| 1520 | /**************************************************************************** |
| 1521 | * Ioctl handling. |
| 1522 | * |
| 1523 | * Routines which queue packet commands take as a final argument a pointer |
| 1524 | * to a request_sense struct. If execution of the command results |
| 1525 | * in an error with a CHECK CONDITION status, this structure will be filled |
| 1526 | * with the results of the subsequent request sense command. The pointer |
| 1527 | * can also be NULL, in which case no sense information is returned. |
| 1528 | */ |
| 1529 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1530 | static |
| 1531 | void msf_from_bcd (struct atapi_msf *msf) |
| 1532 | { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1533 | msf->minute = BCD2BIN(msf->minute); |
| 1534 | msf->second = BCD2BIN(msf->second); |
| 1535 | msf->frame = BCD2BIN(msf->frame); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1536 | } |
| 1537 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1538 | static int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
| 1539 | { |
| 1540 | struct request req; |
| 1541 | struct cdrom_info *info = drive->driver_data; |
| 1542 | struct cdrom_device_info *cdi = &info->devinfo; |
| 1543 | |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1544 | ide_cd_init_rq(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1545 | |
| 1546 | req.sense = sense; |
| 1547 | req.cmd[0] = GPCMD_TEST_UNIT_READY; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1548 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1550 | /* |
| 1551 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to |
| 1552 | * switch CDs instead of supporting the LOAD_UNLOAD opcode. |
| 1553 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1554 | req.cmd[7] = cdi->sanyo_slot % 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1555 | |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1556 | return ide_cd_queue_pc(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | } |
| 1558 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1559 | /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */ |
Bartlomiej Zolnierkiewicz | 1780299 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1560 | int ide_cd_lockdoor(ide_drive_t *drive, int lockflag, |
| 1561 | struct request_sense *sense) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1563 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1564 | struct request_sense my_sense; |
| 1565 | struct request req; |
| 1566 | int stat; |
| 1567 | |
| 1568 | if (sense == NULL) |
| 1569 | sense = &my_sense; |
| 1570 | |
| 1571 | /* If the drive cannot lock the door, just pretend. */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1572 | if (cd->cd_flags & IDE_CD_FLAG_NO_DOORLOCK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1573 | stat = 0; |
| 1574 | } else { |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1575 | ide_cd_init_rq(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1576 | req.sense = sense; |
| 1577 | req.cmd[0] = GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL; |
| 1578 | req.cmd[4] = lockflag ? 1 : 0; |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1579 | stat = ide_cd_queue_pc(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1580 | } |
| 1581 | |
| 1582 | /* If we got an illegal field error, the drive |
| 1583 | probably cannot lock the door. */ |
| 1584 | if (stat != 0 && |
| 1585 | sense->sense_key == ILLEGAL_REQUEST && |
| 1586 | (sense->asc == 0x24 || sense->asc == 0x20)) { |
| 1587 | printk (KERN_ERR "%s: door locking not supported\n", |
| 1588 | drive->name); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1589 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | stat = 0; |
| 1591 | } |
| 1592 | |
| 1593 | /* no medium, that's alright. */ |
| 1594 | if (stat != 0 && sense->sense_key == NOT_READY && sense->asc == 0x3a) |
| 1595 | stat = 0; |
| 1596 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1597 | if (stat == 0) { |
| 1598 | if (lockflag) |
| 1599 | cd->cd_flags |= IDE_CD_FLAG_DOOR_LOCKED; |
| 1600 | else |
| 1601 | cd->cd_flags &= ~IDE_CD_FLAG_DOOR_LOCKED; |
| 1602 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1603 | |
| 1604 | return stat; |
| 1605 | } |
| 1606 | |
| 1607 | |
| 1608 | /* Eject the disk if EJECTFLAG is 0. |
| 1609 | If EJECTFLAG is 1, try to reload the disk. */ |
| 1610 | static int cdrom_eject(ide_drive_t *drive, int ejectflag, |
| 1611 | struct request_sense *sense) |
| 1612 | { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1613 | struct cdrom_info *cd = drive->driver_data; |
| 1614 | struct cdrom_device_info *cdi = &cd->devinfo; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1615 | struct request req; |
| 1616 | char loej = 0x02; |
| 1617 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1618 | if ((cd->cd_flags & IDE_CD_FLAG_NO_EJECT) && !ejectflag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1619 | return -EDRIVE_CANT_DO_THIS; |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1620 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1621 | /* reload fails on some drives, if the tray is locked */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1622 | if ((cd->cd_flags & IDE_CD_FLAG_DOOR_LOCKED) && ejectflag) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | return 0; |
| 1624 | |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1625 | ide_cd_init_rq(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1626 | |
| 1627 | /* 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] | 1628 | if (ejectflag && (cdi->mask & CDC_CLOSE_TRAY)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1629 | loej = 0; |
| 1630 | |
| 1631 | req.sense = sense; |
| 1632 | req.cmd[0] = GPCMD_START_STOP_UNIT; |
| 1633 | req.cmd[4] = loej | (ejectflag != 0); |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1634 | |
| 1635 | return ide_cd_queue_pc(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1636 | } |
| 1637 | |
| 1638 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, |
| 1639 | unsigned long *sectors_per_frame, |
| 1640 | struct request_sense *sense) |
| 1641 | { |
| 1642 | struct { |
| 1643 | __u32 lba; |
| 1644 | __u32 blocklen; |
| 1645 | } capbuf; |
| 1646 | |
| 1647 | int stat; |
| 1648 | struct request req; |
| 1649 | |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1650 | ide_cd_init_rq(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1651 | |
| 1652 | req.sense = sense; |
| 1653 | req.cmd[0] = GPCMD_READ_CDVD_CAPACITY; |
| 1654 | req.data = (char *)&capbuf; |
| 1655 | req.data_len = sizeof(capbuf); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1656 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1657 | |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1658 | stat = ide_cd_queue_pc(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1659 | if (stat == 0) { |
| 1660 | *capacity = 1 + be32_to_cpu(capbuf.lba); |
| 1661 | *sectors_per_frame = |
| 1662 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; |
| 1663 | } |
| 1664 | |
| 1665 | return stat; |
| 1666 | } |
| 1667 | |
| 1668 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, |
| 1669 | int format, char *buf, int buflen, |
| 1670 | struct request_sense *sense) |
| 1671 | { |
| 1672 | struct request req; |
| 1673 | |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1674 | ide_cd_init_rq(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1675 | |
| 1676 | req.sense = sense; |
| 1677 | req.data = buf; |
| 1678 | req.data_len = buflen; |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1679 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1680 | req.cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
| 1681 | req.cmd[6] = trackno; |
| 1682 | req.cmd[7] = (buflen >> 8); |
| 1683 | req.cmd[8] = (buflen & 0xff); |
| 1684 | req.cmd[9] = (format << 6); |
| 1685 | |
| 1686 | if (msf_flag) |
| 1687 | req.cmd[1] = 2; |
| 1688 | |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1689 | return ide_cd_queue_pc(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1690 | } |
| 1691 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | /* Try to read the entire TOC for the disk into our internal buffer. */ |
Bartlomiej Zolnierkiewicz | 1780299 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1693 | int ide_cd_read_toc(ide_drive_t *drive, struct request_sense *sense) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1694 | { |
| 1695 | int stat, ntracks, i; |
| 1696 | struct cdrom_info *info = drive->driver_data; |
| 1697 | struct cdrom_device_info *cdi = &info->devinfo; |
| 1698 | struct atapi_toc *toc = info->toc; |
| 1699 | struct { |
| 1700 | struct atapi_toc_header hdr; |
| 1701 | struct atapi_toc_entry ent; |
| 1702 | } ms_tmp; |
| 1703 | long last_written; |
| 1704 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; |
| 1705 | |
| 1706 | if (toc == NULL) { |
| 1707 | /* Try to allocate space. */ |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1708 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1709 | if (toc == NULL) { |
| 1710 | printk (KERN_ERR "%s: No cdrom TOC buffer!\n", drive->name); |
| 1711 | return -ENOMEM; |
| 1712 | } |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1713 | info->toc = toc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1714 | } |
| 1715 | |
| 1716 | /* Check to see if the existing data is still valid. |
| 1717 | If it is, just return. */ |
| 1718 | (void) cdrom_check_status(drive, sense); |
| 1719 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1720 | if (info->cd_flags & IDE_CD_FLAG_TOC_VALID) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1721 | return 0; |
| 1722 | |
| 1723 | /* Try to get the total cdrom capacity and sector size. */ |
| 1724 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, |
| 1725 | sense); |
| 1726 | if (stat) |
| 1727 | toc->capacity = 0x1fffff; |
| 1728 | |
| 1729 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 1730 | /* Save a private copy of te TOC capacity for error handling */ |
| 1731 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
| 1732 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1733 | blk_queue_hardsect_size(drive->queue, |
| 1734 | sectors_per_frame << SECTOR_BITS); |
| 1735 | |
| 1736 | /* First read just the header, so we know how long the TOC is. */ |
| 1737 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, |
| 1738 | sizeof(struct atapi_toc_header), sense); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1739 | if (stat) |
| 1740 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1741 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1742 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1743 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
| 1744 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1745 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | |
| 1747 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; |
| 1748 | if (ntracks <= 0) |
| 1749 | return -EIO; |
| 1750 | if (ntracks > MAX_TRACKS) |
| 1751 | ntracks = MAX_TRACKS; |
| 1752 | |
| 1753 | /* Now read the whole schmeer. */ |
| 1754 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, |
| 1755 | (char *)&toc->hdr, |
| 1756 | sizeof(struct atapi_toc_header) + |
| 1757 | (ntracks + 1) * |
| 1758 | sizeof(struct atapi_toc_entry), sense); |
| 1759 | |
| 1760 | if (stat && toc->hdr.first_track > 1) { |
| 1761 | /* Cds with CDI tracks only don't have any TOC entries, |
| 1762 | despite of this the returned values are |
| 1763 | first_track == last_track = number of CDI tracks + 1, |
| 1764 | so that this case is indistinguishable from the same |
| 1765 | layout plus an additional audio track. |
| 1766 | If we get an error for the regular case, we assume |
| 1767 | a CDI without additional audio tracks. In this case |
| 1768 | the readable TOC is empty (CDI tracks are not included) |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 1769 | and only holds the Leadout entry. Heiko Eißfeldt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1770 | ntracks = 0; |
| 1771 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, |
| 1772 | (char *)&toc->hdr, |
| 1773 | sizeof(struct atapi_toc_header) + |
| 1774 | (ntracks + 1) * |
| 1775 | sizeof(struct atapi_toc_entry), |
| 1776 | sense); |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1777 | if (stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1778 | return stat; |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1779 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1780 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1781 | toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT); |
| 1782 | toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT); |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1783 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1784 | toc->hdr.first_track = CDROM_LEADOUT; |
| 1785 | toc->hdr.last_track = CDROM_LEADOUT; |
| 1786 | } |
| 1787 | } |
| 1788 | |
| 1789 | if (stat) |
| 1790 | return stat; |
| 1791 | |
| 1792 | toc->hdr.toc_length = ntohs (toc->hdr.toc_length); |
| 1793 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1794 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1795 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
| 1796 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1797 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1799 | for (i = 0; i <= ntracks; i++) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1800 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
| 1801 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1802 | toc->ent[i].track = BCD2BIN(toc->ent[i].track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | msf_from_bcd(&toc->ent[i].addr.msf); |
| 1804 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1805 | toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute, |
| 1806 | toc->ent[i].addr.msf.second, |
| 1807 | toc->ent[i].addr.msf.frame); |
| 1808 | } |
| 1809 | |
| 1810 | /* Read the multisession information. */ |
| 1811 | if (toc->hdr.first_track != CDROM_LEADOUT) { |
| 1812 | /* Read the multisession information. */ |
| 1813 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, |
| 1814 | sizeof(ms_tmp), sense); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1815 | if (stat) |
| 1816 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1817 | |
| 1818 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); |
| 1819 | } else { |
| 1820 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track = CDROM_LEADOUT; |
| 1821 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ |
| 1822 | } |
| 1823 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1824 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1825 | /* Re-read multisession information using MSF format */ |
| 1826 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, |
| 1827 | sizeof(ms_tmp), sense); |
| 1828 | if (stat) |
| 1829 | return stat; |
| 1830 | |
| 1831 | msf_from_bcd (&ms_tmp.ent.addr.msf); |
| 1832 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, |
| 1833 | ms_tmp.ent.addr.msf.second, |
| 1834 | ms_tmp.ent.addr.msf.frame); |
| 1835 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | |
| 1837 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); |
| 1838 | |
| 1839 | /* Now try to get the total cdrom capacity. */ |
| 1840 | stat = cdrom_get_last_written(cdi, &last_written); |
| 1841 | if (!stat && (last_written > toc->capacity)) { |
| 1842 | toc->capacity = last_written; |
| 1843 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 1844 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1845 | } |
| 1846 | |
| 1847 | /* Remember that we've read this stuff. */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1848 | info->cd_flags |= IDE_CD_FLAG_TOC_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | |
| 1850 | return 0; |
| 1851 | } |
| 1852 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1853 | /* the generic packet interface to cdrom.c */ |
| 1854 | static int ide_cdrom_packet(struct cdrom_device_info *cdi, |
| 1855 | struct packet_command *cgc) |
| 1856 | { |
| 1857 | struct request req; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1858 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | |
| 1860 | if (cgc->timeout <= 0) |
| 1861 | cgc->timeout = ATAPI_WAIT_PC; |
| 1862 | |
| 1863 | /* here we queue the commands from the uniform CD-ROM |
| 1864 | layer. the packet must be complete, as we do not |
| 1865 | touch it at all. */ |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1866 | ide_cd_init_rq(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | memcpy(req.cmd, cgc->cmd, CDROM_PACKET_SIZE); |
| 1868 | if (cgc->sense) |
| 1869 | memset(cgc->sense, 0, sizeof(struct request_sense)); |
| 1870 | req.data = cgc->buffer; |
| 1871 | req.data_len = cgc->buflen; |
| 1872 | req.timeout = cgc->timeout; |
| 1873 | |
| 1874 | if (cgc->quiet) |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1875 | req.cmd_flags |= REQ_QUIET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1876 | |
| 1877 | req.sense = cgc->sense; |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1878 | cgc->stat = ide_cd_queue_pc(drive, &req); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | if (!cgc->stat) |
| 1880 | cgc->buflen -= req.data_len; |
| 1881 | return cgc->stat; |
| 1882 | } |
| 1883 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1884 | static |
| 1885 | int ide_cdrom_tray_move (struct cdrom_device_info *cdi, int position) |
| 1886 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1887 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1888 | struct request_sense sense; |
| 1889 | |
| 1890 | if (position) { |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1891 | int stat = ide_cd_lockdoor(drive, 0, &sense); |
| 1892 | |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1893 | if (stat) |
| 1894 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1895 | } |
| 1896 | |
| 1897 | return cdrom_eject(drive, !position, &sense); |
| 1898 | } |
| 1899 | |
Bartlomiej Zolnierkiewicz | 1780299 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1900 | int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1901 | { |
| 1902 | struct cdrom_info *info = drive->driver_data; |
| 1903 | struct cdrom_device_info *cdi = &info->devinfo; |
| 1904 | struct packet_command cgc; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1905 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1906 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1907 | if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0) |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1908 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1909 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1910 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1911 | do { /* we seem to get stat=0x01,err=0x00 the first time (??) */ |
| 1912 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); |
| 1913 | if (!stat) |
| 1914 | break; |
| 1915 | } while (--attempts); |
| 1916 | return stat; |
| 1917 | } |
| 1918 | |
Bartlomiej Zolnierkiewicz | 1780299 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1919 | void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1920 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1921 | struct cdrom_info *cd = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 481c8c6 | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1922 | u16 curspeed, maxspeed; |
| 1923 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1924 | curspeed = *(u16 *)&buf[8 + 14]; |
| 1925 | maxspeed = *(u16 *)&buf[8 + 8]; |
| 1926 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1927 | if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) { |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1928 | curspeed = le16_to_cpu(curspeed); |
| 1929 | maxspeed = le16_to_cpu(maxspeed); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1930 | } else { |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1931 | curspeed = be16_to_cpu(curspeed); |
| 1932 | maxspeed = be16_to_cpu(maxspeed); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1933 | } |
Bartlomiej Zolnierkiewicz | 481c8c6 | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1934 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1935 | cd->current_speed = (curspeed + (176/2)) / 176; |
| 1936 | cd->max_speed = (maxspeed + (176/2)) / 176; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1937 | } |
| 1938 | |
Bartlomiej Zolnierkiewicz | 5c68429 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 1939 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1940 | * add logic to try GET_EVENT command first to check for media and tray |
| 1941 | * status. this should be supported by newer cd-r/w and all DVD etc |
| 1942 | * drives |
| 1943 | */ |
| 1944 | static |
| 1945 | int ide_cdrom_drive_status (struct cdrom_device_info *cdi, int slot_nr) |
| 1946 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1947 | ide_drive_t *drive = cdi->handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | struct media_event_desc med; |
| 1949 | struct request_sense sense; |
| 1950 | int stat; |
| 1951 | |
| 1952 | if (slot_nr != CDSL_CURRENT) |
| 1953 | return -EINVAL; |
| 1954 | |
| 1955 | stat = cdrom_check_status(drive, &sense); |
| 1956 | if (!stat || sense.sense_key == UNIT_ATTENTION) |
| 1957 | return CDS_DISC_OK; |
| 1958 | |
| 1959 | if (!cdrom_get_media_event(cdi, &med)) { |
| 1960 | if (med.media_present) |
| 1961 | return CDS_DISC_OK; |
| 1962 | else if (med.door_open) |
| 1963 | return CDS_TRAY_OPEN; |
| 1964 | else |
| 1965 | return CDS_NO_DISC; |
| 1966 | } |
| 1967 | |
| 1968 | if (sense.sense_key == NOT_READY && sense.asc == 0x04 && sense.ascq == 0x04) |
| 1969 | return CDS_DISC_OK; |
| 1970 | |
| 1971 | /* |
| 1972 | * If not using Mt Fuji extended media tray reports, |
| 1973 | * just return TRAY_OPEN since ATAPI doesn't provide |
| 1974 | * any other way to detect this... |
| 1975 | */ |
| 1976 | if (sense.sense_key == NOT_READY) { |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 1977 | if (sense.asc == 0x3a && sense.ascq == 1) |
| 1978 | return CDS_NO_DISC; |
| 1979 | else |
| 1980 | return CDS_TRAY_OPEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1981 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1982 | return CDS_DRIVE_NOT_READY; |
| 1983 | } |
| 1984 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | /**************************************************************************** |
| 1986 | * Other driver requests (open, close, check media change). |
| 1987 | */ |
| 1988 | |
| 1989 | static |
| 1990 | int ide_cdrom_check_media_change_real (struct cdrom_device_info *cdi, |
| 1991 | int slot_nr) |
| 1992 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1993 | ide_drive_t *drive = cdi->handle; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1994 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1995 | int retval; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1996 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1997 | if (slot_nr == CDSL_CURRENT) { |
| 1998 | (void) cdrom_check_status(drive, NULL); |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1999 | retval = (cd->cd_flags & IDE_CD_FLAG_MEDIA_CHANGED) ? 1 : 0; |
| 2000 | cd->cd_flags &= ~IDE_CD_FLAG_MEDIA_CHANGED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | return retval; |
| 2002 | } else { |
| 2003 | return -EINVAL; |
| 2004 | } |
| 2005 | } |
| 2006 | |
| 2007 | |
| 2008 | static |
| 2009 | int ide_cdrom_open_real (struct cdrom_device_info *cdi, int purpose) |
| 2010 | { |
| 2011 | return 0; |
| 2012 | } |
| 2013 | |
| 2014 | /* |
| 2015 | * Close down the device. Invalidate all cached blocks. |
| 2016 | */ |
| 2017 | |
| 2018 | static |
| 2019 | void ide_cdrom_release_real (struct cdrom_device_info *cdi) |
| 2020 | { |
| 2021 | ide_drive_t *drive = cdi->handle; |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2022 | struct cdrom_info *cd = drive->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2023 | |
| 2024 | if (!cdi->use_count) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2025 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2026 | } |
| 2027 | |
Bartlomiej Zolnierkiewicz | 20e7f7e | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2028 | #define IDE_CD_CAPABILITIES \ |
| 2029 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ |
| 2030 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ |
| 2031 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ |
| 2032 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ |
| 2033 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2035 | static struct cdrom_device_ops ide_cdrom_dops = { |
| 2036 | .open = ide_cdrom_open_real, |
| 2037 | .release = ide_cdrom_release_real, |
| 2038 | .drive_status = ide_cdrom_drive_status, |
| 2039 | .media_changed = ide_cdrom_check_media_change_real, |
| 2040 | .tray_move = ide_cdrom_tray_move, |
| 2041 | .lock_door = ide_cdrom_lock_door, |
| 2042 | .select_speed = ide_cdrom_select_speed, |
| 2043 | .get_last_session = ide_cdrom_get_last_session, |
| 2044 | .get_mcn = ide_cdrom_get_mcn, |
| 2045 | .reset = ide_cdrom_reset, |
| 2046 | .audio_ioctl = ide_cdrom_audio_ioctl, |
Bartlomiej Zolnierkiewicz | 20e7f7e | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2047 | .capability = IDE_CD_CAPABILITIES, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2048 | .generic_packet = ide_cdrom_packet, |
| 2049 | }; |
| 2050 | |
| 2051 | static int ide_cdrom_register (ide_drive_t *drive, int nslots) |
| 2052 | { |
| 2053 | struct cdrom_info *info = drive->driver_data; |
| 2054 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 2055 | |
| 2056 | devinfo->ops = &ide_cdrom_dops; |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2057 | devinfo->speed = info->current_speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2058 | devinfo->capacity = nslots; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2059 | devinfo->handle = drive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | strcpy(devinfo->name, drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2061 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2062 | if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT) |
Bartlomiej Zolnierkiewicz | 3cbd814 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 2063 | devinfo->mask |= CDC_SELECT_SPEED; |
| 2064 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2065 | devinfo->disk = info->disk; |
| 2066 | return register_cdrom(devinfo); |
| 2067 | } |
| 2068 | |
| 2069 | static |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2070 | int ide_cdrom_probe_capabilities (ide_drive_t *drive) |
| 2071 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2072 | struct cdrom_info *cd = drive->driver_data; |
| 2073 | struct cdrom_device_info *cdi = &cd->devinfo; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2074 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
| 2075 | mechtype_t mechtype; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2076 | int nslots = 1; |
| 2077 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2078 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
| 2079 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | |
| 2080 | CDC_MO_DRIVE | CDC_RAM); |
| 2081 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2082 | if (drive->media == ide_optical) { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2083 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2084 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", drive->name); |
| 2085 | return nslots; |
| 2086 | } |
| 2087 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2088 | if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2089 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2090 | cdi->mask &= ~CDC_PLAY_AUDIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2091 | return nslots; |
| 2092 | } |
| 2093 | |
| 2094 | /* |
| 2095 | * we have to cheat a little here. the packet will eventually |
| 2096 | * be queued with ide_cdrom_packet(), which extracts the |
| 2097 | * drive from cdi->handle. Since this device hasn't been |
| 2098 | * registered with the Uniform layer yet, it can't do this. |
| 2099 | * Same goes for cdi->ops. |
| 2100 | */ |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2101 | cdi->handle = drive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2102 | cdi->ops = &ide_cdrom_dops; |
| 2103 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2104 | if (ide_cdrom_get_capabilities(drive, buf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2105 | return 0; |
| 2106 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2107 | if ((buf[8 + 6] & 0x01) == 0) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2108 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2109 | if (buf[8 + 6] & 0x08) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2110 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2111 | if (buf[8 + 3] & 0x01) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2112 | cdi->mask &= ~CDC_CD_R; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2113 | if (buf[8 + 3] & 0x02) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2114 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2115 | if (buf[8 + 2] & 0x38) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2116 | cdi->mask &= ~CDC_DVD; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2117 | if (buf[8 + 3] & 0x20) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2118 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2119 | if (buf[8 + 3] & 0x10) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2120 | cdi->mask &= ~CDC_DVD_R; |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2121 | 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] | 2122 | cdi->mask &= ~CDC_PLAY_AUDIO; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2123 | |
| 2124 | mechtype = buf[8 + 6] >> 5; |
| 2125 | if (mechtype == mechtype_caddy || mechtype == mechtype_popup) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2126 | cdi->mask |= CDC_CLOSE_TRAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2128 | if (cdi->sanyo_slot > 0) { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2129 | cdi->mask &= ~CDC_SELECT_DISC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | nslots = 3; |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2131 | } else if (mechtype == mechtype_individual_changer || |
| 2132 | mechtype == mechtype_cartridge_changer) { |
Bartlomiej Zolnierkiewicz | 2609d06 | 2008-02-01 23:09:19 +0100 | [diff] [blame] | 2133 | nslots = cdrom_number_of_slots(cdi); |
| 2134 | if (nslots > 1) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2135 | cdi->mask &= ~CDC_SELECT_DISC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2136 | } |
| 2137 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2138 | ide_cdrom_update_speed(drive, buf); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2140 | printk(KERN_INFO "%s: ATAPI", drive->name); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2141 | |
| 2142 | /* don't print speed if the drive reported 0 */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2143 | if (cd->max_speed) |
| 2144 | printk(KERN_CONT " %dX", cd->max_speed); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2145 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2146 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2148 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
| 2149 | printk(KERN_CONT " DVD%s%s", |
| 2150 | (cdi->mask & CDC_DVD_R) ? "" : "-R", |
| 2151 | (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2152 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2153 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
| 2154 | printk(KERN_CONT " CD%s%s", |
| 2155 | (cdi->mask & CDC_CD_R) ? "" : "-R", |
| 2156 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2157 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 2158 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
| 2159 | printk(KERN_CONT " changer w/%d slots", nslots); |
| 2160 | else |
| 2161 | printk(KERN_CONT " drive"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2163 | 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] | 2164 | |
| 2165 | return nslots; |
| 2166 | } |
| 2167 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2168 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2169 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
| 2170 | { |
Bartlomiej Zolnierkiewicz | 1497943 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2171 | 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] | 2172 | } |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2173 | #else |
| 2174 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } |
| 2175 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | |
| 2177 | /* |
| 2178 | * standard prep_rq_fn that builds 10 byte cmds |
| 2179 | */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 2180 | 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] | 2181 | { |
| 2182 | int hard_sect = queue_hardsect_size(q); |
| 2183 | long block = (long)rq->hard_sector / (hard_sect >> 9); |
| 2184 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); |
| 2185 | |
| 2186 | memset(rq->cmd, 0, sizeof(rq->cmd)); |
| 2187 | |
| 2188 | if (rq_data_dir(rq) == READ) |
| 2189 | rq->cmd[0] = GPCMD_READ_10; |
| 2190 | else |
| 2191 | rq->cmd[0] = GPCMD_WRITE_10; |
| 2192 | |
| 2193 | /* |
| 2194 | * fill in lba |
| 2195 | */ |
| 2196 | rq->cmd[2] = (block >> 24) & 0xff; |
| 2197 | rq->cmd[3] = (block >> 16) & 0xff; |
| 2198 | rq->cmd[4] = (block >> 8) & 0xff; |
| 2199 | rq->cmd[5] = block & 0xff; |
| 2200 | |
| 2201 | /* |
| 2202 | * and transfer length |
| 2203 | */ |
| 2204 | rq->cmd[7] = (blocks >> 8) & 0xff; |
| 2205 | rq->cmd[8] = blocks & 0xff; |
| 2206 | rq->cmd_len = 10; |
| 2207 | return BLKPREP_OK; |
| 2208 | } |
| 2209 | |
| 2210 | /* |
| 2211 | * Most of the SCSI commands are supported directly by ATAPI devices. |
| 2212 | * This transform handles the few exceptions. |
| 2213 | */ |
| 2214 | static int ide_cdrom_prep_pc(struct request *rq) |
| 2215 | { |
| 2216 | u8 *c = rq->cmd; |
| 2217 | |
| 2218 | /* |
| 2219 | * Transform 6-byte read/write commands to the 10-byte version |
| 2220 | */ |
| 2221 | if (c[0] == READ_6 || c[0] == WRITE_6) { |
| 2222 | c[8] = c[4]; |
| 2223 | c[5] = c[3]; |
| 2224 | c[4] = c[2]; |
| 2225 | c[3] = c[1] & 0x1f; |
| 2226 | c[2] = 0; |
| 2227 | c[1] &= 0xe0; |
| 2228 | c[0] += (READ_10 - READ_6); |
| 2229 | rq->cmd_len = 10; |
| 2230 | return BLKPREP_OK; |
| 2231 | } |
| 2232 | |
| 2233 | /* |
| 2234 | * it's silly to pretend we understand 6-byte sense commands, just |
| 2235 | * reject with ILLEGAL_REQUEST and the caller should take the |
| 2236 | * appropriate action |
| 2237 | */ |
| 2238 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { |
| 2239 | rq->errors = ILLEGAL_REQUEST; |
| 2240 | return BLKPREP_KILL; |
| 2241 | } |
| 2242 | |
| 2243 | return BLKPREP_OK; |
| 2244 | } |
| 2245 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 2246 | 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] | 2247 | { |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2248 | if (blk_fs_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2249 | return ide_cdrom_prep_fs(q, rq); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 2250 | else if (blk_pc_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2251 | return ide_cdrom_prep_pc(rq); |
| 2252 | |
| 2253 | return 0; |
| 2254 | } |
| 2255 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2256 | struct cd_list_entry { |
| 2257 | const char *id_model; |
| 2258 | const char *id_firmware; |
| 2259 | unsigned int cd_flags; |
| 2260 | }; |
| 2261 | |
| 2262 | static const struct cd_list_entry ide_cd_quirks_list[] = { |
| 2263 | /* Limit transfer size per interrupt. */ |
| 2264 | { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, |
| 2265 | { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, |
| 2266 | /* SCR-3231 doesn't support the SET_CD_SPEED command. */ |
| 2267 | { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT }, |
| 2268 | /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */ |
| 2269 | { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD | |
| 2270 | IDE_CD_FLAG_PRE_ATAPI12, }, |
| 2271 | /* Vertos 300, some versions of this drive like to talk BCD. */ |
| 2272 | { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, }, |
| 2273 | /* Vertos 600 ESD. */ |
| 2274 | { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, }, |
| 2275 | /* |
| 2276 | * Sanyo 3 CD changer uses a non-standard command for CD changing |
| 2277 | * (by default standard ATAPI support for CD changers is used). |
| 2278 | */ |
| 2279 | { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD }, |
| 2280 | { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD }, |
| 2281 | { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD }, |
| 2282 | /* Stingray 8X CD-ROM. */ |
| 2283 | { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12}, |
| 2284 | /* |
| 2285 | * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length |
| 2286 | * mode sense page capabilities size, but older drives break. |
| 2287 | */ |
| 2288 | { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, |
| 2289 | { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, |
| 2290 | /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */ |
| 2291 | { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS }, |
| 2292 | /* |
| 2293 | * Some drives used by Apple don't advertise audio play |
| 2294 | * but they do support reading TOC & audio datas. |
| 2295 | */ |
| 2296 | { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 2297 | { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 2298 | { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 2299 | { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 2300 | { NULL, NULL, 0 } |
| 2301 | }; |
| 2302 | |
| 2303 | static unsigned int ide_cd_flags(struct hd_driveid *id) |
| 2304 | { |
| 2305 | const struct cd_list_entry *cle = ide_cd_quirks_list; |
| 2306 | |
| 2307 | while (cle->id_model) { |
| 2308 | if (strcmp(cle->id_model, id->model) == 0 && |
| 2309 | (cle->id_firmware == NULL || |
| 2310 | strstr(id->fw_rev, cle->id_firmware))) |
| 2311 | return cle->cd_flags; |
| 2312 | cle++; |
| 2313 | } |
| 2314 | |
| 2315 | return 0; |
| 2316 | } |
| 2317 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2318 | static |
| 2319 | int ide_cdrom_setup (ide_drive_t *drive) |
| 2320 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 2321 | struct cdrom_info *cd = drive->driver_data; |
| 2322 | struct cdrom_device_info *cdi = &cd->devinfo; |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2323 | struct hd_driveid *id = drive->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2324 | int nslots; |
| 2325 | |
| 2326 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); |
| 2327 | blk_queue_dma_alignment(drive->queue, 31); |
| 2328 | drive->queue->unplug_delay = (1 * HZ) / 1000; |
| 2329 | if (!drive->queue->unplug_delay) |
| 2330 | drive->queue->unplug_delay = 1; |
| 2331 | |
| 2332 | drive->special.all = 0; |
| 2333 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2334 | cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT | |
| 2335 | ide_cd_flags(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2336 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2337 | if ((id->config & 0x0060) == 0x20) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2338 | cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT; |
Bartlomiej Zolnierkiewicz | b8d25de | 2008-02-01 23:09:19 +0100 | [diff] [blame] | 2339 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2340 | if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) && |
| 2341 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2342 | cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD | |
| 2343 | IDE_CD_FLAG_TOCADDR_AS_BCD); |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2344 | else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) && |
| 2345 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2346 | cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD; |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 2347 | else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD) |
| 2348 | cdi->sanyo_slot = 3; /* 3 => use CD in slot 0 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2350 | nslots = ide_cdrom_probe_capabilities (drive); |
| 2351 | |
| 2352 | /* |
| 2353 | * set correct block size |
| 2354 | */ |
| 2355 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); |
| 2356 | |
| 2357 | if (drive->autotune == IDE_TUNE_DEFAULT || |
| 2358 | drive->autotune == IDE_TUNE_AUTO) |
| 2359 | drive->dsc_overlap = (drive->next != drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2360 | |
| 2361 | if (ide_cdrom_register(drive, nslots)) { |
| 2362 | 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] | 2363 | cd->devinfo.handle = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2364 | return 1; |
| 2365 | } |
| 2366 | ide_cdrom_add_settings(drive); |
| 2367 | return 0; |
| 2368 | } |
| 2369 | |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 2370 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2371 | static |
| 2372 | sector_t ide_cdrom_capacity (ide_drive_t *drive) |
| 2373 | { |
| 2374 | unsigned long capacity, sectors_per_frame; |
| 2375 | |
| 2376 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) |
| 2377 | return 0; |
| 2378 | |
| 2379 | return capacity * sectors_per_frame; |
| 2380 | } |
Amos Waterland | d97b3214 | 2005-10-30 15:02:10 -0800 | [diff] [blame] | 2381 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2382 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2383 | static void ide_cd_remove(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2384 | { |
| 2385 | struct cdrom_info *info = drive->driver_data; |
| 2386 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2387 | ide_proc_unregister_driver(drive, info->driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2388 | |
| 2389 | del_gendisk(info->disk); |
| 2390 | |
| 2391 | ide_cd_put(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | } |
| 2393 | |
| 2394 | static void ide_cd_release(struct kref *kref) |
| 2395 | { |
| 2396 | struct cdrom_info *info = to_ide_cd(kref); |
| 2397 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 2398 | ide_drive_t *drive = info->drive; |
| 2399 | struct gendisk *g = info->disk; |
| 2400 | |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 2401 | kfree(info->buffer); |
| 2402 | kfree(info->toc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2403 | if (devinfo->handle == drive && unregister_cdrom(devinfo)) |
| 2404 | printk(KERN_ERR "%s: %s failed to unregister device from the cdrom " |
| 2405 | "driver.\n", __FUNCTION__, drive->name); |
| 2406 | drive->dsc_overlap = 0; |
| 2407 | drive->driver_data = NULL; |
| 2408 | blk_queue_prep_rq(drive->queue, NULL); |
| 2409 | g->private_data = NULL; |
| 2410 | put_disk(g); |
| 2411 | kfree(info); |
| 2412 | } |
| 2413 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2414 | static int ide_cd_probe(ide_drive_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2415 | |
Bartlomiej Zolnierkiewicz | ecfd80e | 2007-05-10 00:01:09 +0200 | [diff] [blame] | 2416 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2417 | static int proc_idecd_read_capacity |
| 2418 | (char *page, char **start, off_t off, int count, int *eof, void *data) |
| 2419 | { |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 2420 | ide_drive_t *drive = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2421 | int len; |
| 2422 | |
| 2423 | len = sprintf(page,"%llu\n", (long long)ide_cdrom_capacity(drive)); |
| 2424 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
| 2425 | } |
| 2426 | |
| 2427 | static ide_proc_entry_t idecd_proc[] = { |
| 2428 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, |
| 2429 | { NULL, 0, NULL, NULL } |
| 2430 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2431 | #endif |
| 2432 | |
| 2433 | static ide_driver_t ide_cdrom_driver = { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2434 | .gen_driver = { |
Laurent Riffard | 4ef3b8f | 2005-11-18 22:15:40 +0100 | [diff] [blame] | 2435 | .owner = THIS_MODULE, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2436 | .name = "ide-cdrom", |
| 2437 | .bus = &ide_bus_type, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2438 | }, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2439 | .probe = ide_cd_probe, |
| 2440 | .remove = ide_cd_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2441 | .version = IDECD_VERSION, |
| 2442 | .media = ide_cdrom, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2443 | .supports_dsc_overlap = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2444 | .do_request = ide_do_rw_cdrom, |
| 2445 | .end_request = ide_end_request, |
| 2446 | .error = __ide_error, |
| 2447 | .abort = __ide_abort, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2448 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2449 | .proc = idecd_proc, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2450 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2451 | }; |
| 2452 | |
| 2453 | static int idecd_open(struct inode * inode, struct file * file) |
| 2454 | { |
| 2455 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 2456 | struct cdrom_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2457 | int rc = -ENOMEM; |
| 2458 | |
| 2459 | if (!(info = ide_cd_get(disk))) |
| 2460 | return -ENXIO; |
| 2461 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2462 | if (!info->buffer) |
Bartlomiej Zolnierkiewicz | c94964a | 2007-02-17 02:40:24 +0100 | [diff] [blame] | 2463 | info->buffer = kmalloc(SECTOR_BUFFER_SIZE, GFP_KERNEL|__GFP_REPEAT); |
| 2464 | |
| 2465 | if (info->buffer) |
| 2466 | rc = cdrom_open(&info->devinfo, inode, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2467 | |
| 2468 | if (rc < 0) |
| 2469 | ide_cd_put(info); |
| 2470 | |
| 2471 | return rc; |
| 2472 | } |
| 2473 | |
| 2474 | static int idecd_release(struct inode * inode, struct file * file) |
| 2475 | { |
| 2476 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 2477 | struct cdrom_info *info = ide_cd_g(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2478 | |
| 2479 | cdrom_release (&info->devinfo, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2480 | |
| 2481 | ide_cd_put(info); |
| 2482 | |
| 2483 | return 0; |
| 2484 | } |
| 2485 | |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 2486 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
| 2487 | { |
| 2488 | struct packet_command cgc; |
| 2489 | char buffer[16]; |
| 2490 | int stat; |
| 2491 | char spindown; |
| 2492 | |
| 2493 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) |
| 2494 | return -EFAULT; |
| 2495 | |
| 2496 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 2497 | |
| 2498 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); |
| 2499 | if (stat) |
| 2500 | return stat; |
| 2501 | |
| 2502 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); |
| 2503 | return cdrom_mode_select(cdi, &cgc); |
| 2504 | } |
| 2505 | |
| 2506 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
| 2507 | { |
| 2508 | struct packet_command cgc; |
| 2509 | char buffer[16]; |
| 2510 | int stat; |
| 2511 | char spindown; |
| 2512 | |
| 2513 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 2514 | |
| 2515 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); |
| 2516 | if (stat) |
| 2517 | return stat; |
| 2518 | |
| 2519 | spindown = buffer[11] & 0x0f; |
| 2520 | if (copy_to_user((void __user *)arg, &spindown, sizeof (char))) |
| 2521 | return -EFAULT; |
| 2522 | return 0; |
| 2523 | } |
| 2524 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2525 | static int idecd_ioctl (struct inode *inode, struct file *file, |
| 2526 | unsigned int cmd, unsigned long arg) |
| 2527 | { |
| 2528 | struct block_device *bdev = inode->i_bdev; |
| 2529 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); |
| 2530 | int err; |
| 2531 | |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 2532 | switch (cmd) { |
| 2533 | case CDROMSETSPINDOWN: |
| 2534 | return idecd_set_spindown(&info->devinfo, arg); |
| 2535 | case CDROMGETSPINDOWN: |
| 2536 | return idecd_get_spindown(&info->devinfo, arg); |
| 2537 | default: |
| 2538 | break; |
| 2539 | } |
| 2540 | |
| 2541 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2542 | if (err == -EINVAL) |
| 2543 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); |
| 2544 | |
| 2545 | return err; |
| 2546 | } |
| 2547 | |
| 2548 | static int idecd_media_changed(struct gendisk *disk) |
| 2549 | { |
| 2550 | struct cdrom_info *info = ide_cd_g(disk); |
| 2551 | return cdrom_media_changed(&info->devinfo); |
| 2552 | } |
| 2553 | |
| 2554 | static int idecd_revalidate_disk(struct gendisk *disk) |
| 2555 | { |
| 2556 | struct cdrom_info *info = ide_cd_g(disk); |
| 2557 | struct request_sense sense; |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 2558 | |
| 2559 | ide_cd_read_toc(info->drive, &sense); |
| 2560 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2561 | return 0; |
| 2562 | } |
| 2563 | |
| 2564 | static struct block_device_operations idecd_ops = { |
| 2565 | .owner = THIS_MODULE, |
| 2566 | .open = idecd_open, |
| 2567 | .release = idecd_release, |
| 2568 | .ioctl = idecd_ioctl, |
| 2569 | .media_changed = idecd_media_changed, |
| 2570 | .revalidate_disk= idecd_revalidate_disk |
| 2571 | }; |
| 2572 | |
| 2573 | /* options */ |
| 2574 | static char *ignore = NULL; |
| 2575 | |
| 2576 | module_param(ignore, charp, 0400); |
| 2577 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); |
| 2578 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2579 | static int ide_cd_probe(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2580 | { |
| 2581 | struct cdrom_info *info; |
| 2582 | struct gendisk *g; |
| 2583 | struct request_sense sense; |
| 2584 | |
| 2585 | if (!strstr("ide-cdrom", drive->driver_req)) |
| 2586 | goto failed; |
| 2587 | if (!drive->present) |
| 2588 | goto failed; |
| 2589 | if (drive->media != ide_cdrom && drive->media != ide_optical) |
| 2590 | goto failed; |
| 2591 | /* skip drives that we were told to ignore */ |
| 2592 | if (ignore != NULL) { |
| 2593 | if (strstr(ignore, drive->name)) { |
| 2594 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", drive->name); |
| 2595 | goto failed; |
| 2596 | } |
| 2597 | } |
| 2598 | if (drive->scsi) { |
| 2599 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi emulation.\n", drive->name); |
| 2600 | goto failed; |
| 2601 | } |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 2602 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | if (info == NULL) { |
| 2604 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", drive->name); |
| 2605 | goto failed; |
| 2606 | } |
| 2607 | |
| 2608 | g = alloc_disk(1 << PARTN_BITS); |
| 2609 | if (!g) |
| 2610 | goto out_free_cd; |
| 2611 | |
| 2612 | ide_init_disk(g, drive); |
| 2613 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2614 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2615 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2616 | kref_init(&info->kref); |
| 2617 | |
| 2618 | info->drive = drive; |
| 2619 | info->driver = &ide_cdrom_driver; |
| 2620 | info->disk = g; |
| 2621 | |
| 2622 | g->private_data = &info->driver; |
| 2623 | |
| 2624 | drive->driver_data = info; |
| 2625 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2626 | g->minors = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2627 | g->driverfs_dev = &drive->gendev; |
| 2628 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; |
| 2629 | if (ide_cdrom_setup(drive)) { |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2630 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
Bartlomiej Zolnierkiewicz | 05017db | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 2631 | ide_cd_release(&info->kref); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2632 | goto failed; |
| 2633 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2634 | |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 2635 | ide_cd_read_toc(drive, &sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2636 | g->fops = &idecd_ops; |
| 2637 | g->flags |= GENHD_FL_REMOVABLE; |
| 2638 | add_disk(g); |
| 2639 | return 0; |
| 2640 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2641 | out_free_cd: |
| 2642 | kfree(info); |
| 2643 | failed: |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2644 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2645 | } |
| 2646 | |
| 2647 | static void __exit ide_cdrom_exit(void) |
| 2648 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2649 | driver_unregister(&ide_cdrom_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2650 | } |
Bartlomiej Zolnierkiewicz | 17514e8 | 2005-11-19 22:24:35 +0100 | [diff] [blame] | 2651 | |
| 2652 | static int __init ide_cdrom_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2653 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2654 | return driver_register(&ide_cdrom_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2655 | } |
| 2656 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 2657 | MODULE_ALIAS("ide:*m-cdrom*"); |
Bartlomiej Zolnierkiewicz | 972560f | 2008-02-01 23:09:23 +0100 | [diff] [blame] | 2658 | MODULE_ALIAS("ide-cd"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2659 | module_init(ide_cdrom_init); |
| 2660 | module_exit(ide_cdrom_exit); |
| 2661 | MODULE_LICENSE("GPL"); |