Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Bartlomiej Zolnierkiewicz | 3bb4663 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 2 | * ATAPI CD-ROM driver. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Bartlomiej Zolnierkiewicz | 59bca8c | 2008-02-01 23:09:33 +0100 | [diff] [blame] | 4 | * Copyright (C) 1994-1996 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 | * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * |
| 9 | * May be copied or modified under the terms of the GNU General Public |
| 10 | * License. See linux/COPYING for more information. |
| 11 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | * |
Bartlomiej Zolnierkiewicz | 0355335 | 2008-02-01 23:09:18 +0100 | [diff] [blame] | 22 | * For historical changelog please see: |
| 23 | * Documentation/ide/ChangeLog.ide-cd.1994-2004 |
| 24 | */ |
| 25 | |
Bartlomiej Zolnierkiewicz | 3bb4663 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 26 | #define IDECD_VERSION "5.00" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <linux/module.h> |
| 29 | #include <linux/types.h> |
| 30 | #include <linux/kernel.h> |
| 31 | #include <linux/delay.h> |
| 32 | #include <linux/timer.h> |
| 33 | #include <linux/slab.h> |
| 34 | #include <linux/interrupt.h> |
| 35 | #include <linux/errno.h> |
| 36 | #include <linux/cdrom.h> |
| 37 | #include <linux/ide.h> |
| 38 | #include <linux/completion.h> |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 39 | #include <linux/mutex.h> |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 40 | #include <linux/bcd.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 42 | /* For SCSI -> ATAPI command conversion */ |
| 43 | #include <scsi/scsi.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
Borislav Petkov | 9aba468 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 45 | #include <linux/irq.h> |
| 46 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <asm/byteorder.h> |
Borislav Petkov | 9aba468 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 48 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <asm/unaligned.h> |
| 50 | |
| 51 | #include "ide-cd.h" |
| 52 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 53 | static DEFINE_MUTEX(idecd_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 55 | #define to_ide_cd(obj) container_of(obj, struct cdrom_info, kref) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
| 57 | #define ide_cd_g(disk) \ |
| 58 | container_of((disk)->private_data, struct cdrom_info, driver) |
| 59 | |
| 60 | static struct cdrom_info *ide_cd_get(struct gendisk *disk) |
| 61 | { |
| 62 | struct cdrom_info *cd = NULL; |
| 63 | |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 64 | mutex_lock(&idecd_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | cd = ide_cd_g(disk); |
| 66 | if (cd) |
| 67 | kref_get(&cd->kref); |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 68 | mutex_unlock(&idecd_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | return cd; |
| 70 | } |
| 71 | |
| 72 | static void ide_cd_release(struct kref *); |
| 73 | |
| 74 | static void ide_cd_put(struct cdrom_info *cd) |
| 75 | { |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 76 | mutex_lock(&idecd_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | kref_put(&cd->kref, ide_cd_release); |
Arjan van de Ven | cf8b897 | 2006-03-23 03:00:45 -0800 | [diff] [blame] | 78 | mutex_unlock(&idecd_ref_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | } |
| 80 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 81 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | * Generic packet command support and error handling routines. |
| 83 | */ |
| 84 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 85 | /* Mark that we've seen a media change and invalidate our internal buffers. */ |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 86 | static void cdrom_saw_media_change(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | { |
Bartlomiej Zolnierkiewicz | 0ba1121 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 88 | struct cdrom_info *cd = drive->driver_data; |
| 89 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 90 | cd->cd_flags |= IDE_CD_FLAG_MEDIA_CHANGED; |
| 91 | cd->cd_flags &= ~IDE_CD_FLAG_TOC_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | static int cdrom_log_sense(ide_drive_t *drive, struct request *rq, |
| 95 | struct request_sense *sense) |
| 96 | { |
| 97 | int log = 0; |
| 98 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 99 | if (!sense || !rq || (rq->cmd_flags & REQ_QUIET)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | return 0; |
| 101 | |
| 102 | switch (sense->sense_key) { |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 103 | case NO_SENSE: |
| 104 | case RECOVERED_ERROR: |
| 105 | break; |
| 106 | case NOT_READY: |
| 107 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 108 | * don't care about tray state messages for e.g. capacity |
| 109 | * commands or in-progress or becoming ready |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 110 | */ |
| 111 | if (sense->asc == 0x3a || sense->asc == 0x04) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | break; |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 113 | log = 1; |
| 114 | break; |
| 115 | case ILLEGAL_REQUEST: |
| 116 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 117 | * don't log START_STOP unit with LoEj set, since we cannot |
| 118 | * reliably check if drive can auto-close |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 119 | */ |
| 120 | if (rq->cmd[0] == GPCMD_START_STOP_UNIT && sense->asc == 0x24) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | break; |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 122 | log = 1; |
| 123 | break; |
| 124 | case UNIT_ATTENTION: |
| 125 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 126 | * Make good and sure we've seen this potential media change. |
| 127 | * Some drives (i.e. Creative) fail to present the correct sense |
| 128 | * key in the error register. |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 129 | */ |
| 130 | cdrom_saw_media_change(drive); |
| 131 | break; |
| 132 | default: |
| 133 | log = 1; |
| 134 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | } |
| 136 | return log; |
| 137 | } |
| 138 | |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 139 | static void cdrom_analyze_sense_data(ide_drive_t *drive, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | struct request *failed_command, |
| 141 | struct request_sense *sense) |
| 142 | { |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 143 | unsigned long sector; |
| 144 | unsigned long bio_sectors; |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 145 | struct cdrom_info *info = drive->driver_data; |
| 146 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | if (!cdrom_log_sense(drive, failed_command, sense)) |
| 148 | return; |
| 149 | |
| 150 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 151 | * If a read toc is executed for a CD-R or CD-RW medium where the first |
| 152 | * toc has not been recorded yet, it will fail with 05/24/00 (which is a |
| 153 | * confusing error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | */ |
| 155 | if (failed_command && failed_command->cmd[0] == GPCMD_READ_TOC_PMA_ATIP) |
| 156 | if (sense->sense_key == 0x05 && sense->asc == 0x24) |
| 157 | return; |
| 158 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 159 | /* current error */ |
| 160 | if (sense->error_code == 0x70) { |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 161 | switch (sense->sense_key) { |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 162 | case MEDIUM_ERROR: |
| 163 | case VOLUME_OVERFLOW: |
| 164 | case ILLEGAL_REQUEST: |
| 165 | if (!sense->valid) |
| 166 | break; |
| 167 | if (failed_command == NULL || |
| 168 | !blk_fs_request(failed_command)) |
| 169 | break; |
| 170 | sector = (sense->information[0] << 24) | |
| 171 | (sense->information[1] << 16) | |
| 172 | (sense->information[2] << 8) | |
| 173 | (sense->information[3]); |
| 174 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 175 | if (drive->queue->hardsect_size == 2048) |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 176 | /* device sector size is 2K */ |
| 177 | sector <<= 2; |
Roel Kluin | eee4929 | 2008-04-28 23:44:43 +0200 | [diff] [blame] | 178 | |
| 179 | bio_sectors = max(bio_sectors(failed_command->bio), 4U); |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 180 | sector &= ~(bio_sectors - 1); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 181 | |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 182 | if (sector < get_capacity(info->disk) && |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 183 | drive->probed_capacity - sector < 4 * 75) |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 184 | set_capacity(info->disk, sector); |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 185 | } |
| 186 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
Bartlomiej Zolnierkiewicz | 972560f | 2008-02-01 23:09:23 +0100 | [diff] [blame] | 188 | ide_cd_log_error(drive->name, failed_command, sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | } |
| 190 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, |
| 192 | struct request *failed_command) |
| 193 | { |
| 194 | struct cdrom_info *info = drive->driver_data; |
| 195 | struct request *rq = &info->request_sense_request; |
| 196 | |
| 197 | if (sense == NULL) |
| 198 | sense = &info->sense_data; |
| 199 | |
| 200 | /* stuff the sense request in front of our current request */ |
FUJITA Tomonori | ed820f1 | 2008-07-15 21:21:45 +0200 | [diff] [blame^] | 201 | blk_rq_init(NULL, rq); |
| 202 | rq->cmd_type = REQ_TYPE_ATA_PC; |
| 203 | rq->rq_disk = info->disk; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
| 205 | rq->data = sense; |
| 206 | rq->cmd[0] = GPCMD_REQUEST_SENSE; |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 207 | rq->cmd[4] = 18; |
| 208 | rq->data_len = 18; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 210 | rq->cmd_type = REQ_TYPE_SENSE; |
Bartlomiej Zolnierkiewicz | e8a96aa | 2008-07-15 21:21:41 +0200 | [diff] [blame] | 211 | rq->cmd_flags |= REQ_PREEMPT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
| 213 | /* NOTE! Save the failed command in "rq->buffer" */ |
| 214 | rq->buffer = (void *) failed_command; |
| 215 | |
| 216 | (void) ide_do_drive_cmd(drive, rq, ide_preempt); |
| 217 | } |
| 218 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 219 | static void cdrom_end_request(ide_drive_t *drive, int uptodate) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | { |
| 221 | struct request *rq = HWGROUP(drive)->rq; |
| 222 | int nsectors = rq->hard_cur_sectors; |
| 223 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 224 | if (blk_sense_request(rq) && uptodate) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | /* |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 226 | * For REQ_TYPE_SENSE, "rq->buffer" points to the original |
| 227 | * failed request |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | */ |
| 229 | struct request *failed = (struct request *) rq->buffer; |
| 230 | struct cdrom_info *info = drive->driver_data; |
| 231 | void *sense = &info->sense_data; |
| 232 | unsigned long flags; |
| 233 | |
| 234 | if (failed) { |
| 235 | if (failed->sense) { |
| 236 | sense = failed->sense; |
| 237 | failed->sense_len = rq->sense_len; |
| 238 | } |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 239 | cdrom_analyze_sense_data(drive, failed, sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 241 | * now end the failed request |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | */ |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 243 | if (blk_fs_request(failed)) { |
| 244 | if (ide_end_dequeued_request(drive, failed, 0, |
| 245 | failed->hard_nr_sectors)) |
| 246 | BUG(); |
| 247 | } else { |
| 248 | spin_lock_irqsave(&ide_lock, flags); |
Kiyoshi Ueda | 5e36bb6 | 2008-01-28 10:34:20 +0100 | [diff] [blame] | 249 | if (__blk_end_request(failed, -EIO, |
| 250 | failed->data_len)) |
| 251 | BUG(); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 252 | spin_unlock_irqrestore(&ide_lock, flags); |
| 253 | } |
| 254 | } else |
| 255 | cdrom_analyze_sense_data(drive, NULL, sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } |
| 257 | |
| 258 | if (!rq->current_nr_sectors && blk_fs_request(rq)) |
| 259 | uptodate = 1; |
| 260 | /* make sure it's fully ended */ |
| 261 | if (blk_pc_request(rq)) |
| 262 | nsectors = (rq->data_len + 511) >> 9; |
| 263 | if (!nsectors) |
| 264 | nsectors = 1; |
| 265 | |
| 266 | ide_end_request(drive, uptodate, nsectors); |
| 267 | } |
| 268 | |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 269 | static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st) |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 270 | { |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 271 | if (st & 0x80) |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 272 | return; |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 273 | ide_dump_status(drive, msg, st); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 274 | } |
| 275 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 276 | /* |
| 277 | * Returns: |
| 278 | * 0: if the request should be continued. |
| 279 | * 1: if the request was ended. |
| 280 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret) |
| 282 | { |
| 283 | struct request *rq = HWGROUP(drive)->rq; |
| 284 | int stat, err, sense_key; |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 285 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 286 | /* check for errors */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 287 | stat = ide_read_status(drive); |
| 288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | if (stat_ret) |
| 290 | *stat_ret = stat; |
| 291 | |
| 292 | if (OK_STAT(stat, good_stat, BAD_R_STAT)) |
| 293 | return 0; |
| 294 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 295 | /* get the IDE error register */ |
Bartlomiej Zolnierkiewicz | 64a57fe | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 296 | err = ide_read_error(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | sense_key = err >> 4; |
| 298 | |
| 299 | if (rq == NULL) { |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 300 | printk(KERN_ERR "%s: missing rq in %s\n", |
| 301 | drive->name, __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | return 1; |
| 303 | } |
| 304 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 305 | if (blk_sense_request(rq)) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 306 | /* |
| 307 | * We got an error trying to get sense info from the drive |
| 308 | * (probably while trying to recover from a former error). |
| 309 | * Just give up. |
| 310 | */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 311 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | cdrom_end_request(drive, 0); |
| 313 | ide_error(drive, "request sense failure", stat); |
| 314 | return 1; |
| 315 | |
Jens Axboe | 8770c01 | 2006-10-12 17:24:52 +0200 | [diff] [blame] | 316 | } 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] | 317 | /* All other functions, except for READ. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | |
| 319 | /* |
| 320 | * if we have an error, pass back CHECK_CONDITION as the |
| 321 | * scsi status byte |
| 322 | */ |
Jens Axboe | b715673 | 2006-11-13 18:05:02 +0100 | [diff] [blame] | 323 | if (blk_pc_request(rq) && !rq->errors) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | rq->errors = SAM_STAT_CHECK_CONDITION; |
| 325 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 326 | /* check for tray open */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | if (sense_key == NOT_READY) { |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 328 | cdrom_saw_media_change(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | } else if (sense_key == UNIT_ATTENTION) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 330 | /* check for media change */ |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 331 | cdrom_saw_media_change(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | return 0; |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 333 | } else if (sense_key == ILLEGAL_REQUEST && |
| 334 | rq->cmd[0] == GPCMD_START_STOP_UNIT) { |
| 335 | /* |
| 336 | * Don't print error message for this condition-- |
| 337 | * SFF8090i indicates that 5/24/00 is the correct |
| 338 | * response to a request to close the tray if the |
| 339 | * drive doesn't have that capability. |
| 340 | * cdrom_log_sense() knows this! |
| 341 | */ |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 342 | } else if (!(rq->cmd_flags & REQ_QUIET)) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 343 | /* otherwise, print an error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | ide_dump_status(drive, "packet command error", stat); |
| 345 | } |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 346 | |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 347 | rq->cmd_flags |= REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | |
| 349 | /* |
| 350 | * instead of playing games with moving completions around, |
| 351 | * remove failed request completely and end it when the |
| 352 | * request sense has completed |
| 353 | */ |
Bartlomiej Zolnierkiewicz | bbb89e3 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 354 | goto end_request; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | |
| 356 | } else if (blk_fs_request(rq)) { |
| 357 | int do_end_request = 0; |
| 358 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 359 | /* handle errors from READ and WRITE requests */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
| 361 | if (blk_noretry_request(rq)) |
| 362 | do_end_request = 1; |
| 363 | |
| 364 | if (sense_key == NOT_READY) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 365 | /* tray open */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | if (rq_data_dir(rq) == READ) { |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 367 | cdrom_saw_media_change(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 369 | /* fail the request */ |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 370 | printk(KERN_ERR "%s: tray open\n", drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | do_end_request = 1; |
| 372 | } else { |
| 373 | struct cdrom_info *info = drive->driver_data; |
| 374 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 375 | /* |
| 376 | * Allow the drive 5 seconds to recover, some |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | * devices will return this error while flushing |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 378 | * data from cache. |
| 379 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | if (!rq->errors) |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 381 | info->write_timeout = jiffies + |
| 382 | ATAPI_WAIT_WRITE_BUSY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | rq->errors = 1; |
| 384 | if (time_after(jiffies, info->write_timeout)) |
| 385 | do_end_request = 1; |
| 386 | else { |
| 387 | unsigned long flags; |
| 388 | |
| 389 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 390 | * take a breather relying on the unplug |
| 391 | * timer to kick us again |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | */ |
| 393 | spin_lock_irqsave(&ide_lock, flags); |
| 394 | blk_plug_device(drive->queue); |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 395 | spin_unlock_irqrestore(&ide_lock, |
| 396 | flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | return 1; |
| 398 | } |
| 399 | } |
| 400 | } else if (sense_key == UNIT_ATTENTION) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 401 | /* media change */ |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 402 | cdrom_saw_media_change(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 404 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 405 | * Arrange to retry the request but be sure to give up |
| 406 | * if we've retried too many times. |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 407 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | if (++rq->errors > ERROR_MAX) |
| 409 | do_end_request = 1; |
| 410 | } else if (sense_key == ILLEGAL_REQUEST || |
| 411 | sense_key == DATA_PROTECT) { |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 412 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 413 | * No point in retrying after an illegal request or data |
| 414 | * protect error. |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 415 | */ |
| 416 | ide_dump_status_no_sense(drive, "command error", stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | do_end_request = 1; |
| 418 | } else if (sense_key == MEDIUM_ERROR) { |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 419 | /* |
| 420 | * No point in re-trying a zillion times on a bad |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 421 | * sector. If we got here the error is not correctable. |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 422 | */ |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 423 | ide_dump_status_no_sense(drive, |
| 424 | "media error (bad sector)", |
| 425 | stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | do_end_request = 1; |
| 427 | } else if (sense_key == BLANK_CHECK) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 428 | /* disk appears blank ?? */ |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 429 | ide_dump_status_no_sense(drive, "media error (blank)", |
| 430 | stat); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | do_end_request = 1; |
| 432 | } else if ((err & ~ABRT_ERR) != 0) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 433 | /* go to the default handler for other errors */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | ide_error(drive, "cdrom_decode_status", stat); |
| 435 | return 1; |
| 436 | } else if ((++rq->errors > ERROR_MAX)) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 437 | /* we've racked up too many retries, abort */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | do_end_request = 1; |
| 439 | } |
| 440 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 441 | /* |
| 442 | * End a request through request sense analysis when we have |
| 443 | * sense data. We need this in order to perform end of media |
| 444 | * processing. |
| 445 | */ |
Bartlomiej Zolnierkiewicz | bbb89e3 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 446 | if (do_end_request) |
| 447 | goto end_request; |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 448 | |
Bartlomiej Zolnierkiewicz | bbb89e3 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 449 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 450 | * If we got a CHECK_CONDITION status, queue |
| 451 | * a request sense command. |
Bartlomiej Zolnierkiewicz | bbb89e3 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 452 | */ |
| 453 | if (stat & ERR_STAT) |
| 454 | cdrom_queue_request_sense(drive, NULL, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | } else { |
| 456 | blk_dump_rq_flags(rq, "ide-cd: bad rq"); |
| 457 | cdrom_end_request(drive, 0); |
| 458 | } |
| 459 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 460 | /* retry, or handle the next request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | return 1; |
Bartlomiej Zolnierkiewicz | bbb89e3 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 462 | |
| 463 | end_request: |
| 464 | if (stat & ERR_STAT) { |
| 465 | unsigned long flags; |
| 466 | |
| 467 | spin_lock_irqsave(&ide_lock, flags); |
| 468 | blkdev_dequeue_request(rq); |
| 469 | HWGROUP(drive)->rq = NULL; |
| 470 | spin_unlock_irqrestore(&ide_lock, flags); |
| 471 | |
| 472 | cdrom_queue_request_sense(drive, rq->sense, rq); |
| 473 | } else |
| 474 | cdrom_end_request(drive, 0); |
| 475 | |
| 476 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | } |
| 478 | |
| 479 | static int cdrom_timer_expiry(ide_drive_t *drive) |
| 480 | { |
| 481 | struct request *rq = HWGROUP(drive)->rq; |
| 482 | unsigned long wait = 0; |
| 483 | |
| 484 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 485 | * Some commands are *slow* and normally take a long time to complete. |
| 486 | * Usually we can use the ATAPI "disconnect" to bypass this, but not all |
| 487 | * commands/drives support that. Let ide_timer_expiry keep polling us |
| 488 | * for these. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | */ |
| 490 | switch (rq->cmd[0]) { |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 491 | case GPCMD_BLANK: |
| 492 | case GPCMD_FORMAT_UNIT: |
| 493 | case GPCMD_RESERVE_RZONE_TRACK: |
| 494 | case GPCMD_CLOSE_TRACK: |
| 495 | case GPCMD_FLUSH_CACHE: |
| 496 | wait = ATAPI_WAIT_PC; |
| 497 | break; |
| 498 | default: |
| 499 | if (!(rq->cmd_flags & REQ_QUIET)) |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 500 | printk(KERN_INFO "ide-cd: cmd 0x%x timed out\n", |
| 501 | rq->cmd[0]); |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 502 | wait = 0; |
| 503 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | } |
| 505 | return wait; |
| 506 | } |
| 507 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 508 | /* |
| 509 | * Set up the device registers for transferring a packet command on DEV, |
| 510 | * expecting to later transfer XFERLEN bytes. HANDLER is the routine |
| 511 | * which actually transfers the command to the drive. If this is a |
| 512 | * drq_interrupt device, this routine will arrange for HANDLER to be |
| 513 | * called when the interrupt from the drive arrives. Otherwise, HANDLER |
| 514 | * will be called immediately after the drive is prepared for the transfer. |
| 515 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, |
| 517 | int xferlen, |
| 518 | ide_handler_t *handler) |
| 519 | { |
| 520 | ide_startstop_t startstop; |
| 521 | struct cdrom_info *info = drive->driver_data; |
| 522 | ide_hwif_t *hwif = drive->hwif; |
| 523 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 524 | /* wait for the controller to be idle */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | if (ide_wait_stat(&startstop, drive, 0, BUSY_STAT, WAIT_READY)) |
| 526 | return startstop; |
| 527 | |
Bartlomiej Zolnierkiewicz | 3a6a354 | 2008-01-25 22:17:13 +0100 | [diff] [blame] | 528 | /* FIXME: for Virtual DMA we must check harder */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | if (info->dma) |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 530 | info->dma = !hwif->dma_ops->dma_setup(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 532 | /* set up the controller registers */ |
Bartlomiej Zolnierkiewicz | 2fc5738 | 2008-01-25 22:17:13 +0100 | [diff] [blame] | 533 | ide_pktcmd_tf_load(drive, IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL | |
| 534 | IDE_TFLAG_NO_SELECT_MASK, xferlen, info->dma); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 535 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 536 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
Albert Lee | f0dd871 | 2007-02-17 02:40:21 +0100 | [diff] [blame] | 537 | /* waiting for CDB interrupt, not DMA yet. */ |
| 538 | if (info->dma) |
| 539 | drive->waiting_for_dma = 0; |
| 540 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | /* packet command */ |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 542 | ide_execute_command(drive, WIN_PACKETCMD, handler, |
| 543 | ATAPI_WAIT_PC, cdrom_timer_expiry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | return ide_started; |
| 545 | } else { |
Bartlomiej Zolnierkiewicz | 1fc1425 | 2008-04-28 23:44:39 +0200 | [diff] [blame] | 546 | ide_execute_pkt_cmd(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | |
| 548 | return (*handler) (drive); |
| 549 | } |
| 550 | } |
| 551 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 552 | /* |
| 553 | * Send a packet command to DRIVE described by CMD_BUF and CMD_LEN. The device |
| 554 | * registers must have already been prepared by cdrom_start_packet_command. |
| 555 | * HANDLER is the interrupt handler to call when the command completes or |
| 556 | * there's data ready. |
| 557 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | #define ATAPI_MIN_CDB_BYTES 12 |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 559 | static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | struct request *rq, |
| 561 | ide_handler_t *handler) |
| 562 | { |
| 563 | ide_hwif_t *hwif = drive->hwif; |
| 564 | int cmd_len; |
| 565 | struct cdrom_info *info = drive->driver_data; |
| 566 | ide_startstop_t startstop; |
| 567 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 568 | if (info->cd_flags & IDE_CD_FLAG_DRQ_INTERRUPT) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 569 | /* |
| 570 | * Here we should have been called after receiving an interrupt |
| 571 | * from the device. DRQ should how be set. |
| 572 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 574 | /* check for errors */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | if (cdrom_decode_status(drive, DRQ_STAT, NULL)) |
| 576 | return ide_stopped; |
Albert Lee | f0dd871 | 2007-02-17 02:40:21 +0100 | [diff] [blame] | 577 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 578 | /* ok, next interrupt will be DMA interrupt */ |
Albert Lee | f0dd871 | 2007-02-17 02:40:21 +0100 | [diff] [blame] | 579 | if (info->dma) |
| 580 | drive->waiting_for_dma = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | } else { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 582 | /* otherwise, we must wait for DRQ to get set */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
| 584 | BUSY_STAT, WAIT_READY)) |
| 585 | return startstop; |
| 586 | } |
| 587 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 588 | /* arm the interrupt handler */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | ide_set_handler(drive, handler, rq->timeout, cdrom_timer_expiry); |
| 590 | |
| 591 | /* ATAPI commands get padded out to 12 bytes minimum */ |
| 592 | cmd_len = COMMAND_SIZE(rq->cmd[0]); |
| 593 | if (cmd_len < ATAPI_MIN_CDB_BYTES) |
| 594 | cmd_len = ATAPI_MIN_CDB_BYTES; |
| 595 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 596 | /* send the command to the device */ |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 597 | hwif->output_data(drive, NULL, rq->cmd, cmd_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 599 | /* start the DMA if need be */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | if (info->dma) |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 601 | hwif->dma_ops->dma_start(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
| 603 | return ide_started; |
| 604 | } |
| 605 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 606 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | * Block read functions. |
| 608 | */ |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 609 | static void ide_cd_pad_transfer(ide_drive_t *drive, xfer_func_t *xf, int len) |
| 610 | { |
| 611 | while (len > 0) { |
| 612 | int dum = 0; |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 613 | xf(drive, NULL, &dum, sizeof(dum)); |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 614 | len -= sizeof(dum); |
| 615 | } |
| 616 | } |
| 617 | |
Bartlomiej Zolnierkiewicz | b4ab726 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 618 | static void ide_cd_drain_data(ide_drive_t *drive, int nsects) |
| 619 | { |
| 620 | while (nsects > 0) { |
| 621 | static char dum[SECTOR_SIZE]; |
| 622 | |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 623 | drive->hwif->input_data(drive, NULL, dum, sizeof(dum)); |
Bartlomiej Zolnierkiewicz | b4ab726 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 624 | nsects--; |
| 625 | } |
| 626 | } |
| 627 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | * Check the contents of the interrupt reason register from the cdrom |
| 630 | * and attempt to recover if there are problems. Returns 0 if everything's |
| 631 | * ok; nonzero if the request has been terminated. |
| 632 | */ |
Bartlomiej Zolnierkiewicz | 9f10d9e | 2008-02-26 21:50:35 +0100 | [diff] [blame] | 633 | static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq, |
| 634 | int len, int ireason, int rw) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | { |
Bartlomiej Zolnierkiewicz | 0d6f7e3 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 636 | /* |
| 637 | * ireason == 0: the drive wants to receive data from us |
| 638 | * ireason == 2: the drive is expecting to transfer data to us |
| 639 | */ |
| 640 | if (ireason == (!rw << 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | return 0; |
Bartlomiej Zolnierkiewicz | 0d6f7e3 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 642 | else if (ireason == (rw << 1)) { |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 643 | ide_hwif_t *hwif = drive->hwif; |
Bartlomiej Zolnierkiewicz | 0d6f7e3 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 644 | xfer_func_t *xf; |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 645 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 646 | /* whoops... */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 647 | printk(KERN_ERR "%s: %s: wrong transfer direction!\n", |
Paolo Ciarrocchi | 177773e | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 648 | drive->name, __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 650 | xf = rw ? hwif->output_data : hwif->input_data; |
Bartlomiej Zolnierkiewicz | 0d6f7e3 | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 651 | ide_cd_pad_transfer(drive, xf, len); |
| 652 | } else if (rw == 0 && ireason == 1) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 653 | /* |
| 654 | * Some drives (ASUS) seem to tell us that status info is |
| 655 | * available. Just get it and ignore. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | */ |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 657 | (void)ide_read_status(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | return 0; |
| 659 | } else { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 660 | /* drive wants a command packet, or invalid ireason... */ |
Bartlomiej Zolnierkiewicz | 35379c0 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 661 | printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n", |
Paolo Ciarrocchi | 177773e | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 662 | drive->name, __func__, ireason); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | } |
| 664 | |
Bartlomiej Zolnierkiewicz | 9f10d9e | 2008-02-26 21:50:35 +0100 | [diff] [blame] | 665 | if (rq->cmd_type == REQ_TYPE_ATA_PC) |
| 666 | rq->cmd_flags |= REQ_FAILED; |
| 667 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | cdrom_end_request(drive, 0); |
| 669 | return -1; |
| 670 | } |
| 671 | |
| 672 | /* |
Bartlomiej Zolnierkiewicz | 64814f2 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 673 | * Assume that the drive will always provide data in multiples of at least |
| 674 | * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise. |
| 675 | */ |
| 676 | static int ide_cd_check_transfer_size(ide_drive_t *drive, int len) |
| 677 | { |
| 678 | struct cdrom_info *cd = drive->driver_data; |
| 679 | |
| 680 | if ((len % SECTOR_SIZE) == 0) |
| 681 | return 0; |
| 682 | |
| 683 | printk(KERN_ERR "%s: %s: Bad transfer size %d\n", |
Paolo Ciarrocchi | 177773e | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 684 | drive->name, __func__, len); |
Bartlomiej Zolnierkiewicz | 64814f2 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 685 | |
| 686 | if (cd->cd_flags & IDE_CD_FLAG_LIMIT_NFRAMES) |
| 687 | printk(KERN_ERR " This drive is not supported by " |
| 688 | "this version of the driver\n"); |
| 689 | else { |
| 690 | printk(KERN_ERR " Trying to limit transfer sizes\n"); |
| 691 | cd->cd_flags |= IDE_CD_FLAG_LIMIT_NFRAMES; |
| 692 | } |
| 693 | |
| 694 | return 1; |
| 695 | } |
| 696 | |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 697 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *); |
Bartlomiej Zolnierkiewicz | 94f5a86 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 698 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 700 | * Routine to send a read/write packet command to the drive. This is usually |
| 701 | * called directly from cdrom_start_{read,write}(). However, for drq_interrupt |
| 702 | * devices, it is called from an interrupt when the drive is ready to accept |
| 703 | * the command. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | */ |
Bartlomiej Zolnierkiewicz | 29f3aac | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 705 | static ide_startstop_t cdrom_start_rw_cont(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | { |
| 707 | struct request *rq = HWGROUP(drive)->rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | |
Bartlomiej Zolnierkiewicz | 29f3aac | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 709 | if (rq_data_dir(rq) == READ) { |
| 710 | unsigned short sectors_per_frame = |
| 711 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 712 | int nskip = rq->sector & (sectors_per_frame - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | |
Bartlomiej Zolnierkiewicz | 29f3aac | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 714 | /* |
| 715 | * If the requested sector doesn't start on a frame boundary, |
| 716 | * we must adjust the start of the transfer so that it does, |
| 717 | * and remember to skip the first few sectors. |
| 718 | * |
| 719 | * If the rq->current_nr_sectors field is larger than the size |
| 720 | * of the buffer, it will mean that we're to skip a number of |
| 721 | * sectors equal to the amount by which rq->current_nr_sectors |
| 722 | * is larger than the buffer size. |
| 723 | */ |
| 724 | if (nskip > 0) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 725 | /* sanity check... */ |
Bartlomiej Zolnierkiewicz | 29f3aac | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 726 | if (rq->current_nr_sectors != |
| 727 | bio_cur_sectors(rq->bio)) { |
| 728 | printk(KERN_ERR "%s: %s: buffer botch (%u)\n", |
Paolo Ciarrocchi | 177773e | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 729 | drive->name, __func__, |
Bartlomiej Zolnierkiewicz | 29f3aac | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 730 | rq->current_nr_sectors); |
| 731 | cdrom_end_request(drive, 0); |
| 732 | return ide_stopped; |
| 733 | } |
| 734 | rq->current_nr_sectors += nskip; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 736 | } |
Bartlomiej Zolnierkiewicz | 29f3aac | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 737 | #if 0 |
| 738 | else |
| 739 | /* the immediate bit */ |
| 740 | rq->cmd[1] = 1 << 3; |
| 741 | #endif |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 742 | /* set up the command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | rq->timeout = ATAPI_WAIT_PC; |
| 744 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 745 | /* send the command to the drive and return */ |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 746 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | } |
| 748 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | #define IDECD_SEEK_THRESHOLD (1000) /* 1000 blocks */ |
| 750 | #define IDECD_SEEK_TIMER (5 * WAIT_MIN_SLEEP) /* 100 ms */ |
| 751 | #define IDECD_SEEK_TIMEOUT (2 * WAIT_CMD) /* 20 sec */ |
| 752 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 753 | static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | { |
| 755 | struct cdrom_info *info = drive->driver_data; |
| 756 | int stat; |
| 757 | static int retry = 10; |
| 758 | |
| 759 | if (cdrom_decode_status(drive, 0, &stat)) |
| 760 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 761 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 762 | info->cd_flags |= IDE_CD_FLAG_SEEKING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | if (retry && time_after(jiffies, info->start_seek + IDECD_SEEK_TIMER)) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 765 | if (--retry == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | drive->dsc_overlap = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | } |
| 768 | return ide_stopped; |
| 769 | } |
| 770 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 771 | static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | { |
| 773 | struct request *rq = HWGROUP(drive)->rq; |
| 774 | sector_t frame = rq->sector; |
| 775 | |
| 776 | sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); |
| 777 | |
FUJITA Tomonori | d34c87e | 2008-04-29 14:37:52 +0200 | [diff] [blame] | 778 | memset(rq->cmd, 0, BLK_MAX_CDB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | rq->cmd[0] = GPCMD_SEEK; |
| 780 | put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); |
| 781 | |
| 782 | rq->timeout = ATAPI_WAIT_PC; |
| 783 | return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); |
| 784 | } |
| 785 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 786 | static ide_startstop_t cdrom_start_seek(ide_drive_t *drive, unsigned int block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | { |
| 788 | struct cdrom_info *info = drive->driver_data; |
| 789 | |
| 790 | info->dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | info->start_seek = jiffies; |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 792 | return cdrom_start_packet_command(drive, 0, |
| 793 | cdrom_start_seek_continuation); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | } |
| 795 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 796 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 797 | * Fix up a possibly partially-processed request so that we can start it over |
| 798 | * entirely, or even put it back on the request queue. |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 799 | */ |
| 800 | static void restore_request(struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | { |
| 802 | if (rq->buffer != bio_data(rq->bio)) { |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 803 | sector_t n = |
| 804 | (rq->buffer - (char *)bio_data(rq->bio)) / SECTOR_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | |
| 806 | rq->buffer = bio_data(rq->bio); |
| 807 | rq->nr_sectors += n; |
| 808 | rq->sector -= n; |
| 809 | } |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 810 | rq->current_nr_sectors = bio_cur_sectors(rq->bio); |
| 811 | rq->hard_cur_sectors = rq->current_nr_sectors; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | rq->hard_nr_sectors = rq->nr_sectors; |
| 813 | rq->hard_sector = rq->sector; |
| 814 | rq->q->prep_rq_fn(rq->q, rq); |
| 815 | } |
| 816 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 817 | /* |
| 818 | * All other packet commands. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | */ |
Bartlomiej Zolnierkiewicz | 8ee69f5 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 820 | static void ide_cd_request_sense_fixup(struct request *rq) |
| 821 | { |
| 822 | /* |
| 823 | * Some of the trailing request sense fields are optional, |
| 824 | * and some drives don't send them. Sigh. |
| 825 | */ |
| 826 | if (rq->cmd[0] == GPCMD_REQUEST_SENSE && |
| 827 | rq->data_len > 0 && rq->data_len <= 5) |
| 828 | while (rq->data_len > 0) { |
| 829 | *(u8 *)rq->data++ = 0; |
| 830 | --rq->data_len; |
| 831 | } |
| 832 | } |
| 833 | |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 834 | int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd, |
| 835 | int write, void *buffer, unsigned *bufflen, |
| 836 | struct request_sense *sense, int timeout, |
| 837 | unsigned int cmd_flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | { |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 839 | struct cdrom_info *info = drive->driver_data; |
| 840 | struct request_sense local_sense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | int retries = 10; |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 842 | unsigned int flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 844 | if (!sense) |
| 845 | sense = &local_sense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 847 | /* start of retry loop */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | do { |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 849 | struct request *rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | int error; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 852 | rq = blk_get_request(drive->queue, write, __GFP_WAIT); |
| 853 | |
| 854 | memcpy(rq->cmd, cmd, BLK_MAX_CDB); |
| 855 | rq->cmd_type = REQ_TYPE_ATA_PC; |
| 856 | rq->sense = sense; |
| 857 | rq->cmd_flags |= cmd_flags; |
| 858 | rq->timeout = timeout; |
| 859 | if (buffer) { |
| 860 | rq->data = buffer; |
| 861 | rq->data_len = *bufflen; |
| 862 | } |
| 863 | |
| 864 | error = blk_execute_rq(drive->queue, info->disk, rq, 0); |
| 865 | |
| 866 | if (buffer) |
| 867 | *bufflen = rq->data_len; |
| 868 | |
| 869 | flags = rq->cmd_flags; |
| 870 | blk_put_request(rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 872 | /* |
| 873 | * FIXME: we should probably abort/retry or something in case of |
| 874 | * failure. |
| 875 | */ |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 876 | if (flags & REQ_FAILED) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 877 | /* |
| 878 | * The request failed. Retry if it was due to a unit |
| 879 | * attention status (usually means media was changed). |
| 880 | */ |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 881 | struct request_sense *reqbuf = sense; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | |
| 883 | if (reqbuf->sense_key == UNIT_ATTENTION) |
| 884 | cdrom_saw_media_change(drive); |
| 885 | else if (reqbuf->sense_key == NOT_READY && |
| 886 | reqbuf->asc == 4 && reqbuf->ascq != 4) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 887 | /* |
| 888 | * The drive is in the process of loading |
| 889 | * a disk. Retry, but wait a little to give |
| 890 | * the drive time to complete the load. |
| 891 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | ssleep(2); |
| 893 | } else { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 894 | /* otherwise, don't retry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | retries = 0; |
| 896 | } |
| 897 | --retries; |
| 898 | } |
| 899 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 900 | /* end of retry loop */ |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 901 | } while ((flags & REQ_FAILED) && retries >= 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 902 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 903 | /* return an error if the command failed */ |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 904 | return (flags & REQ_FAILED) ? -EIO : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 905 | } |
| 906 | |
| 907 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 908 | * Called from blk_end_request_callback() after the data of the request is |
| 909 | * completed and before the request itself is completed. By returning value '1', |
| 910 | * blk_end_request_callback() returns immediately without completing it. |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 911 | */ |
| 912 | static int cdrom_newpc_intr_dummy_cb(struct request *rq) |
| 913 | { |
| 914 | return 1; |
| 915 | } |
| 916 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) |
| 918 | { |
Bartlomiej Zolnierkiewicz | 23579a2 | 2008-04-18 00:46:26 +0200 | [diff] [blame] | 919 | ide_hwif_t *hwif = drive->hwif; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | struct cdrom_info *info = drive->driver_data; |
| 921 | struct request *rq = HWGROUP(drive)->rq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | xfer_func_t *xferfunc; |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 923 | ide_expiry_t *expiry = NULL; |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 924 | int dma_error = 0, dma, stat, ireason, len, thislen, uptodate = 0; |
| 925 | int write = (rq_data_dir(rq) == WRITE) ? 1 : 0; |
| 926 | unsigned int timeout; |
| 927 | u8 lowcyl, highcyl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 928 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 929 | /* check for errors */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | dma = info->dma; |
| 931 | if (dma) { |
| 932 | info->dma = 0; |
Bartlomiej Zolnierkiewicz | 5e37bdc | 2008-04-26 22:25:24 +0200 | [diff] [blame] | 933 | dma_error = hwif->dma_ops->dma_end(drive); |
Bartlomiej Zolnierkiewicz | eba15fb | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 934 | if (dma_error) { |
| 935 | printk(KERN_ERR "%s: DMA %s error\n", drive->name, |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 936 | write ? "write" : "read"); |
Bartlomiej Zolnierkiewicz | eba15fb | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 937 | ide_dma_off(drive); |
| 938 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | } |
| 940 | |
| 941 | if (cdrom_decode_status(drive, 0, &stat)) |
| 942 | return ide_stopped; |
| 943 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 944 | /* using dma, transfer is complete now */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | if (dma) { |
Bartlomiej Zolnierkiewicz | eba15fb | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 946 | if (dma_error) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | return ide_error(drive, "dma error", stat); |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 948 | if (blk_fs_request(rq)) { |
| 949 | ide_end_request(drive, 1, rq->nr_sectors); |
| 950 | return ide_stopped; |
| 951 | } |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 952 | goto end_request; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | } |
| 954 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 955 | /* ok we fall to pio :/ */ |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 956 | ireason = hwif->INB(hwif->io_ports.nsect_addr) & 0x3; |
| 957 | lowcyl = hwif->INB(hwif->io_ports.lbam_addr); |
| 958 | highcyl = hwif->INB(hwif->io_ports.lbah_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 959 | |
| 960 | len = lowcyl + (256 * highcyl); |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 961 | |
| 962 | thislen = blk_fs_request(rq) ? len : rq->data_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | if (thislen > len) |
| 964 | thislen = len; |
| 965 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 966 | /* If DRQ is clear, the command has completed. */ |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 967 | if ((stat & DRQ_STAT) == 0) { |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 968 | if (blk_fs_request(rq)) { |
| 969 | /* |
| 970 | * If we're not done reading/writing, complain. |
| 971 | * Otherwise, complete the command normally. |
| 972 | */ |
| 973 | uptodate = 1; |
| 974 | if (rq->current_nr_sectors > 0) { |
| 975 | printk(KERN_ERR "%s: %s: data underrun " |
| 976 | "(%d blocks)\n", |
Paolo Ciarrocchi | 177773e | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 977 | drive->name, __func__, |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 978 | rq->current_nr_sectors); |
| 979 | if (!write) |
| 980 | rq->cmd_flags |= REQ_FAILED; |
| 981 | uptodate = 0; |
| 982 | } |
| 983 | cdrom_end_request(drive, uptodate); |
| 984 | return ide_stopped; |
| 985 | } else if (!blk_pc_request(rq)) { |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 986 | ide_cd_request_sense_fixup(rq); |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 987 | /* complain if we still have data left to transfer */ |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 988 | uptodate = rq->data_len ? 0 : 1; |
| 989 | } |
| 990 | goto end_request; |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 991 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 993 | /* check which way to transfer data */ |
Bartlomiej Zolnierkiewicz | 9f10d9e | 2008-02-26 21:50:35 +0100 | [diff] [blame] | 994 | if (ide_cd_check_ireason(drive, rq, len, ireason, write)) |
| 995 | return ide_stopped; |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 996 | |
Bartlomiej Zolnierkiewicz | 9f10d9e | 2008-02-26 21:50:35 +0100 | [diff] [blame] | 997 | if (blk_fs_request(rq)) { |
| 998 | if (write == 0) { |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 999 | int nskip; |
| 1000 | |
| 1001 | if (ide_cd_check_transfer_size(drive, len)) { |
| 1002 | cdrom_end_request(drive, 0); |
| 1003 | return ide_stopped; |
| 1004 | } |
| 1005 | |
| 1006 | /* |
| 1007 | * First, figure out if we need to bit-bucket |
| 1008 | * any of the leading sectors. |
| 1009 | */ |
| 1010 | nskip = min_t(int, rq->current_nr_sectors |
| 1011 | - bio_cur_sectors(rq->bio), |
| 1012 | thislen >> 9); |
| 1013 | if (nskip > 0) { |
| 1014 | ide_cd_drain_data(drive, nskip); |
| 1015 | rq->current_nr_sectors -= nskip; |
| 1016 | thislen -= (nskip << 9); |
| 1017 | } |
| 1018 | } |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1019 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1020 | |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1021 | if (ireason == 0) { |
| 1022 | write = 1; |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 1023 | xferfunc = hwif->output_data; |
Bartlomiej Zolnierkiewicz | 9f10d9e | 2008-02-26 21:50:35 +0100 | [diff] [blame] | 1024 | } else { |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1025 | write = 0; |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 1026 | xferfunc = hwif->input_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | } |
| 1028 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1029 | /* transfer data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | while (thislen > 0) { |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 1031 | u8 *ptr = blk_fs_request(rq) ? NULL : rq->data; |
Bartlomiej Zolnierkiewicz | a11e77d | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 1032 | int blen = rq->data_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1034 | /* bio backed? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | if (rq->bio) { |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 1036 | if (blk_fs_request(rq)) { |
| 1037 | ptr = rq->buffer; |
| 1038 | blen = rq->current_nr_sectors << 9; |
| 1039 | } else { |
| 1040 | ptr = bio_data(rq->bio); |
| 1041 | blen = bio_iovec(rq->bio)->bv_len; |
| 1042 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | } |
| 1044 | |
| 1045 | if (!ptr) { |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 1046 | if (blk_fs_request(rq) && !write) |
| 1047 | /* |
Borislav Petkov | 968c496 | 2008-04-26 17:36:37 +0200 | [diff] [blame] | 1048 | * If the buffers are full, pipe the rest into |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1049 | * oblivion. |
| 1050 | */ |
Borislav Petkov | 968c496 | 2008-04-26 17:36:37 +0200 | [diff] [blame] | 1051 | ide_cd_drain_data(drive, thislen >> 9); |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 1052 | else { |
| 1053 | printk(KERN_ERR "%s: confused, missing data\n", |
| 1054 | drive->name); |
| 1055 | blk_dump_rq_flags(rq, rq_data_dir(rq) |
| 1056 | ? "cdrom_newpc_intr, write" |
| 1057 | : "cdrom_newpc_intr, read"); |
| 1058 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | break; |
| 1060 | } |
| 1061 | |
| 1062 | if (blen > thislen) |
| 1063 | blen = thislen; |
| 1064 | |
Bartlomiej Zolnierkiewicz | 9567b34 | 2008-04-28 23:44:36 +0200 | [diff] [blame] | 1065 | xferfunc(drive, NULL, ptr, blen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1066 | |
| 1067 | thislen -= blen; |
| 1068 | len -= blen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 1070 | if (blk_fs_request(rq)) { |
| 1071 | rq->buffer += blen; |
| 1072 | rq->nr_sectors -= (blen >> 9); |
| 1073 | rq->current_nr_sectors -= (blen >> 9); |
| 1074 | rq->sector += (blen >> 9); |
| 1075 | |
| 1076 | if (rq->current_nr_sectors == 0 && rq->nr_sectors) |
| 1077 | cdrom_end_request(drive, 1); |
| 1078 | } else { |
| 1079 | rq->data_len -= blen; |
| 1080 | |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1081 | /* |
| 1082 | * The request can't be completed until DRQ is cleared. |
| 1083 | * So complete the data, but don't complete the request |
| 1084 | * using the dummy function for the callback feature |
| 1085 | * of blk_end_request_callback(). |
| 1086 | */ |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 1087 | if (rq->bio) |
| 1088 | blk_end_request_callback(rq, 0, blen, |
Kiyoshi Ueda | aaa04c2 | 2007-12-11 17:51:23 -0500 | [diff] [blame] | 1089 | cdrom_newpc_intr_dummy_cb); |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 1090 | else |
| 1091 | rq->data += blen; |
| 1092 | } |
Andreas Schwab | bcd88ac | 2008-02-26 21:50:35 +0100 | [diff] [blame] | 1093 | if (!write && blk_sense_request(rq)) |
| 1094 | rq->sense_len += blen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | } |
| 1096 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1097 | /* pad, if necessary */ |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 1098 | if (!blk_fs_request(rq) && len > 0) |
Bartlomiej Zolnierkiewicz | 5a5222d | 2008-02-01 23:09:17 +0100 | [diff] [blame] | 1099 | ide_cd_pad_transfer(drive, xferfunc, len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1100 | |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1101 | if (blk_pc_request(rq)) { |
| 1102 | timeout = rq->timeout; |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1103 | } else { |
| 1104 | timeout = ATAPI_WAIT_PC; |
Bartlomiej Zolnierkiewicz | 0041e7c | 2008-02-01 23:09:28 +0100 | [diff] [blame] | 1105 | if (!blk_fs_request(rq)) |
| 1106 | expiry = cdrom_timer_expiry; |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1107 | } |
| 1108 | |
| 1109 | ide_set_handler(drive, cdrom_newpc_intr, timeout, expiry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | return ide_started; |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1111 | |
| 1112 | end_request: |
| 1113 | if (blk_pc_request(rq)) { |
| 1114 | unsigned long flags; |
Kiyoshi Ueda | 14e04c3 | 2008-02-19 01:41:26 +0100 | [diff] [blame] | 1115 | unsigned int dlen = rq->data_len; |
| 1116 | |
| 1117 | if (dma) |
| 1118 | rq->data_len = 0; |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1119 | |
| 1120 | spin_lock_irqsave(&ide_lock, flags); |
Kiyoshi Ueda | 14e04c3 | 2008-02-19 01:41:26 +0100 | [diff] [blame] | 1121 | if (__blk_end_request(rq, 0, dlen)) |
Bartlomiej Zolnierkiewicz | ff1bfbc1 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1122 | BUG(); |
| 1123 | HWGROUP(drive)->rq = NULL; |
| 1124 | spin_unlock_irqrestore(&ide_lock, flags); |
| 1125 | } else { |
| 1126 | if (!uptodate) |
| 1127 | rq->cmd_flags |= REQ_FAILED; |
| 1128 | cdrom_end_request(drive, uptodate); |
| 1129 | } |
| 1130 | return ide_stopped; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | } |
| 1132 | |
Bartlomiej Zolnierkiewicz | 21ea1f0 | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 1133 | static ide_startstop_t cdrom_start_rw(ide_drive_t *drive, struct request *rq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1134 | { |
Bartlomiej Zolnierkiewicz | 21ea1f0 | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 1135 | struct cdrom_info *cd = drive->driver_data; |
| 1136 | int write = rq_data_dir(rq) == WRITE; |
| 1137 | unsigned short sectors_per_frame = |
| 1138 | queue_hardsect_size(drive->queue) >> SECTOR_BITS; |
| 1139 | |
| 1140 | if (write) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1141 | /* disk has become write protected */ |
Bartlomiej Zolnierkiewicz | 21ea1f0 | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 1142 | if (cd->disk->policy) { |
| 1143 | cdrom_end_request(drive, 0); |
| 1144 | return ide_stopped; |
| 1145 | } |
| 1146 | } else { |
| 1147 | /* |
| 1148 | * We may be retrying this request after an error. Fix up any |
| 1149 | * weirdness which might be present in the request packet. |
| 1150 | */ |
| 1151 | restore_request(rq); |
Bartlomiej Zolnierkiewicz | 21ea1f0 | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 1152 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1154 | /* use DMA, if possible / writes *must* be hardware frame aligned */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | if ((rq->nr_sectors & (sectors_per_frame - 1)) || |
| 1156 | (rq->sector & (sectors_per_frame - 1))) { |
Bartlomiej Zolnierkiewicz | 21ea1f0 | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 1157 | if (write) { |
| 1158 | cdrom_end_request(drive, 0); |
| 1159 | return ide_stopped; |
| 1160 | } |
| 1161 | cd->dma = 0; |
| 1162 | } else |
| 1163 | cd->dma = drive->using_dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | |
Bartlomiej Zolnierkiewicz | 21ea1f0 | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 1165 | if (write) |
| 1166 | cd->devinfo.media_written = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1168 | /* start sending the read/write request to the drive */ |
Bartlomiej Zolnierkiewicz | 29f3aac | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 1169 | return cdrom_start_packet_command(drive, 32768, cdrom_start_rw_cont); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | } |
| 1171 | |
| 1172 | static ide_startstop_t cdrom_do_newpc_cont(ide_drive_t *drive) |
| 1173 | { |
| 1174 | struct request *rq = HWGROUP(drive)->rq; |
| 1175 | |
| 1176 | if (!rq->timeout) |
| 1177 | rq->timeout = ATAPI_WAIT_PC; |
| 1178 | |
| 1179 | return cdrom_transfer_packet_command(drive, rq, cdrom_newpc_intr); |
| 1180 | } |
| 1181 | |
| 1182 | static ide_startstop_t cdrom_do_block_pc(ide_drive_t *drive, struct request *rq) |
| 1183 | { |
| 1184 | struct cdrom_info *info = drive->driver_data; |
| 1185 | |
Bartlomiej Zolnierkiewicz | c9f56a8 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 1186 | if (blk_pc_request(rq)) |
| 1187 | rq->cmd_flags |= REQ_QUIET; |
| 1188 | else |
| 1189 | rq->cmd_flags &= ~REQ_FAILED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | |
| 1191 | info->dma = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1193 | /* sg request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | if (rq->bio) { |
| 1195 | int mask = drive->queue->dma_alignment; |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1196 | unsigned long addr = |
| 1197 | (unsigned long)page_address(bio_page(rq->bio)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | info->dma = drive->using_dma; |
| 1200 | |
| 1201 | /* |
| 1202 | * check if dma is safe |
Linus Torvalds | 5d9e4ea | 2005-05-27 07:36:17 -0700 | [diff] [blame] | 1203 | * |
| 1204 | * NOTE! The "len" and "addr" checks should possibly have |
| 1205 | * separate masks. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | */ |
Jens Axboe | 4e7c681 | 2005-05-31 17:47:36 +0200 | [diff] [blame] | 1207 | if ((rq->data_len & 15) || (addr & mask)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1208 | info->dma = 0; |
| 1209 | } |
| 1210 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1211 | /* start sending the command to the drive */ |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1212 | return cdrom_start_packet_command(drive, rq->data_len, |
| 1213 | cdrom_do_newpc_cont); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | } |
| 1215 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1216 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | * cdrom driver request routine. |
| 1218 | */ |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1219 | static ide_startstop_t ide_do_rw_cdrom(ide_drive_t *drive, struct request *rq, |
| 1220 | sector_t block) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | { |
| 1222 | ide_startstop_t action; |
| 1223 | struct cdrom_info *info = drive->driver_data; |
| 1224 | |
| 1225 | if (blk_fs_request(rq)) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1226 | if (info->cd_flags & IDE_CD_FLAG_SEEKING) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | unsigned long elapsed = jiffies - info->start_seek; |
Bartlomiej Zolnierkiewicz | c47137a | 2008-02-06 02:57:51 +0100 | [diff] [blame] | 1228 | int stat = ide_read_status(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | |
| 1230 | if ((stat & SEEK_STAT) != SEEK_STAT) { |
| 1231 | if (elapsed < IDECD_SEEK_TIMEOUT) { |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1232 | ide_stall_queue(drive, |
| 1233 | IDECD_SEEK_TIMER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1234 | return ide_stopped; |
| 1235 | } |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1236 | printk(KERN_ERR "%s: DSC timeout\n", |
| 1237 | drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1238 | } |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1239 | info->cd_flags &= ~IDE_CD_FLAG_SEEKING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1240 | } |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1241 | if (rq_data_dir(rq) == READ && |
| 1242 | IDE_LARGE_SEEK(info->last_block, block, |
| 1243 | IDECD_SEEK_THRESHOLD) && |
| 1244 | drive->dsc_overlap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1245 | action = cdrom_start_seek(drive, block); |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1246 | else |
Bartlomiej Zolnierkiewicz | 21ea1f0 | 2008-02-01 23:09:27 +0100 | [diff] [blame] | 1247 | action = cdrom_start_rw(drive, rq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | info->last_block = block; |
| 1249 | return action; |
Bartlomiej Zolnierkiewicz | c9f56a8 | 2008-02-01 23:09:26 +0100 | [diff] [blame] | 1250 | } else if (blk_sense_request(rq) || blk_pc_request(rq) || |
Jens Axboe | cea2885 | 2006-10-12 15:08:45 +0200 | [diff] [blame] | 1251 | rq->cmd_type == REQ_TYPE_ATA_PC) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1252 | return cdrom_do_block_pc(drive, rq); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1253 | } else if (blk_special_request(rq)) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1254 | /* right now this can only be a reset... */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | cdrom_end_request(drive, 1); |
| 1256 | return ide_stopped; |
| 1257 | } |
| 1258 | |
| 1259 | blk_dump_rq_flags(rq, "ide-cd bad flags"); |
| 1260 | cdrom_end_request(drive, 0); |
| 1261 | return ide_stopped; |
| 1262 | } |
| 1263 | |
| 1264 | |
| 1265 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1266 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | * Ioctl handling. |
| 1268 | * |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1269 | * Routines which queue packet commands take as a final argument a pointer to a |
| 1270 | * request_sense struct. If execution of the command results in an error with a |
| 1271 | * CHECK CONDITION status, this structure will be filled with the results of the |
| 1272 | * subsequent request sense command. The pointer can also be NULL, in which case |
| 1273 | * no sense information is returned. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | */ |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1275 | static void msf_from_bcd(struct atapi_msf *msf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1276 | { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1277 | msf->minute = BCD2BIN(msf->minute); |
| 1278 | msf->second = BCD2BIN(msf->second); |
| 1279 | msf->frame = BCD2BIN(msf->frame); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | } |
| 1281 | |
Borislav Petkov | f9afd18 | 2008-02-01 23:09:29 +0100 | [diff] [blame] | 1282 | int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1283 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | struct cdrom_info *info = drive->driver_data; |
| 1285 | struct cdrom_device_info *cdi = &info->devinfo; |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1286 | unsigned char cmd[BLK_MAX_CDB]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1288 | memset(cmd, 0, BLK_MAX_CDB); |
| 1289 | cmd[0] = GPCMD_TEST_UNIT_READY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1290 | |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1291 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1292 | * Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to switch CDs |
| 1293 | * instead of supporting the LOAD_UNLOAD opcode. |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1294 | */ |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1295 | cmd[7] = cdi->sanyo_slot % 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1297 | return ide_cd_queue_pc(drive, cmd, 0, NULL, 0, sense, 0, REQ_QUIET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | } |
| 1299 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity, |
| 1301 | unsigned long *sectors_per_frame, |
| 1302 | struct request_sense *sense) |
| 1303 | { |
| 1304 | struct { |
| 1305 | __u32 lba; |
| 1306 | __u32 blocklen; |
| 1307 | } capbuf; |
| 1308 | |
| 1309 | int stat; |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1310 | unsigned char cmd[BLK_MAX_CDB]; |
| 1311 | unsigned len = sizeof(capbuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1313 | memset(cmd, 0, BLK_MAX_CDB); |
| 1314 | cmd[0] = GPCMD_READ_CDVD_CAPACITY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1316 | stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0, |
| 1317 | REQ_QUIET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1318 | if (stat == 0) { |
| 1319 | *capacity = 1 + be32_to_cpu(capbuf.lba); |
| 1320 | *sectors_per_frame = |
| 1321 | be32_to_cpu(capbuf.blocklen) >> SECTOR_BITS; |
| 1322 | } |
| 1323 | |
| 1324 | return stat; |
| 1325 | } |
| 1326 | |
| 1327 | static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag, |
| 1328 | int format, char *buf, int buflen, |
| 1329 | struct request_sense *sense) |
| 1330 | { |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1331 | unsigned char cmd[BLK_MAX_CDB]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1333 | memset(cmd, 0, BLK_MAX_CDB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1335 | cmd[0] = GPCMD_READ_TOC_PMA_ATIP; |
| 1336 | cmd[6] = trackno; |
| 1337 | cmd[7] = (buflen >> 8); |
| 1338 | cmd[8] = (buflen & 0xff); |
| 1339 | cmd[9] = (format << 6); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1340 | |
| 1341 | if (msf_flag) |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1342 | cmd[1] = 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1343 | |
FUJITA Tomonori | 5f82854 | 2008-07-15 21:21:42 +0200 | [diff] [blame] | 1344 | return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1345 | } |
| 1346 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | /* 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] | 1348 | 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] | 1349 | { |
| 1350 | int stat, ntracks, i; |
| 1351 | struct cdrom_info *info = drive->driver_data; |
| 1352 | struct cdrom_device_info *cdi = &info->devinfo; |
| 1353 | struct atapi_toc *toc = info->toc; |
| 1354 | struct { |
| 1355 | struct atapi_toc_header hdr; |
| 1356 | struct atapi_toc_entry ent; |
| 1357 | } ms_tmp; |
| 1358 | long last_written; |
| 1359 | unsigned long sectors_per_frame = SECTORS_PER_FRAME; |
| 1360 | |
| 1361 | if (toc == NULL) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1362 | /* try to allocate space */ |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1363 | toc = kmalloc(sizeof(struct atapi_toc), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1364 | if (toc == NULL) { |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1365 | printk(KERN_ERR "%s: No cdrom TOC buffer!\n", |
| 1366 | drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | return -ENOMEM; |
| 1368 | } |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1369 | info->toc = toc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1370 | } |
| 1371 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1372 | /* |
| 1373 | * Check to see if the existing data is still valid. If it is, |
| 1374 | * just return. |
| 1375 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | (void) cdrom_check_status(drive, sense); |
| 1377 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1378 | if (info->cd_flags & IDE_CD_FLAG_TOC_VALID) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | return 0; |
| 1380 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1381 | /* try to get the total cdrom capacity and sector size */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | stat = cdrom_read_capacity(drive, &toc->capacity, §ors_per_frame, |
| 1383 | sense); |
| 1384 | if (stat) |
| 1385 | toc->capacity = 0x1fffff; |
| 1386 | |
| 1387 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1388 | /* save a private copy of the TOC capacity for error handling */ |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 1389 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
| 1390 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1391 | blk_queue_hardsect_size(drive->queue, |
| 1392 | sectors_per_frame << SECTOR_BITS); |
| 1393 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1394 | /* first read just the header, so we know how long the TOC is */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | stat = cdrom_read_tocentry(drive, 0, 1, 0, (char *) &toc->hdr, |
| 1396 | sizeof(struct atapi_toc_header), sense); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1397 | if (stat) |
| 1398 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1400 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1401 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
| 1402 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1404 | |
| 1405 | ntracks = toc->hdr.last_track - toc->hdr.first_track + 1; |
| 1406 | if (ntracks <= 0) |
| 1407 | return -EIO; |
| 1408 | if (ntracks > MAX_TRACKS) |
| 1409 | ntracks = MAX_TRACKS; |
| 1410 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1411 | /* now read the whole schmeer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1412 | stat = cdrom_read_tocentry(drive, toc->hdr.first_track, 1, 0, |
| 1413 | (char *)&toc->hdr, |
| 1414 | sizeof(struct atapi_toc_header) + |
| 1415 | (ntracks + 1) * |
| 1416 | sizeof(struct atapi_toc_entry), sense); |
| 1417 | |
| 1418 | if (stat && toc->hdr.first_track > 1) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1419 | /* |
| 1420 | * Cds with CDI tracks only don't have any TOC entries, despite |
| 1421 | * of this the returned values are |
| 1422 | * first_track == last_track = number of CDI tracks + 1, |
| 1423 | * so that this case is indistinguishable from the same layout |
| 1424 | * plus an additional audio track. If we get an error for the |
| 1425 | * regular case, we assume a CDI without additional audio |
| 1426 | * tracks. In this case the readable TOC is empty (CDI tracks |
| 1427 | * are not included) and only holds the Leadout entry. |
| 1428 | * |
| 1429 | * Heiko Eißfeldt. |
| 1430 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | ntracks = 0; |
| 1432 | stat = cdrom_read_tocentry(drive, CDROM_LEADOUT, 1, 0, |
| 1433 | (char *)&toc->hdr, |
| 1434 | sizeof(struct atapi_toc_header) + |
| 1435 | (ntracks + 1) * |
| 1436 | sizeof(struct atapi_toc_entry), |
| 1437 | sense); |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1438 | if (stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1439 | return stat; |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1440 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1441 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1442 | toc->hdr.first_track = (u8)BIN2BCD(CDROM_LEADOUT); |
| 1443 | toc->hdr.last_track = (u8)BIN2BCD(CDROM_LEADOUT); |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1444 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1445 | toc->hdr.first_track = CDROM_LEADOUT; |
| 1446 | toc->hdr.last_track = CDROM_LEADOUT; |
| 1447 | } |
| 1448 | } |
| 1449 | |
| 1450 | if (stat) |
| 1451 | return stat; |
| 1452 | |
Borislav Petkov | 7eb43fd | 2008-02-11 00:32:13 +0100 | [diff] [blame] | 1453 | toc->hdr.toc_length = be16_to_cpu(toc->hdr.toc_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1455 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) { |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1456 | toc->hdr.first_track = BCD2BIN(toc->hdr.first_track); |
| 1457 | toc->hdr.last_track = BCD2BIN(toc->hdr.last_track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1460 | for (i = 0; i <= ntracks; i++) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1461 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
| 1462 | if (info->cd_flags & IDE_CD_FLAG_TOCTRACKS_AS_BCD) |
Bartlomiej Zolnierkiewicz | 9a6dc66 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1463 | toc->ent[i].track = BCD2BIN(toc->ent[i].track); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | msf_from_bcd(&toc->ent[i].addr.msf); |
| 1465 | } |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1466 | toc->ent[i].addr.lba = msf_to_lba(toc->ent[i].addr.msf.minute, |
| 1467 | toc->ent[i].addr.msf.second, |
| 1468 | toc->ent[i].addr.msf.frame); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | } |
| 1470 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | if (toc->hdr.first_track != CDROM_LEADOUT) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1472 | /* read the multisession information */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1473 | stat = cdrom_read_tocentry(drive, 0, 0, 1, (char *)&ms_tmp, |
| 1474 | sizeof(ms_tmp), sense); |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1475 | if (stat) |
| 1476 | return stat; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1477 | |
| 1478 | toc->last_session_lba = be32_to_cpu(ms_tmp.ent.addr.lba); |
| 1479 | } else { |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1480 | ms_tmp.hdr.last_track = CDROM_LEADOUT; |
| 1481 | ms_tmp.hdr.first_track = ms_tmp.hdr.last_track; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | toc->last_session_lba = msf_to_lba(0, 2, 0); /* 0m 2s 0f */ |
| 1483 | } |
| 1484 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1485 | if (info->cd_flags & IDE_CD_FLAG_TOCADDR_AS_BCD) { |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1486 | /* re-read multisession information using MSF format */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | stat = cdrom_read_tocentry(drive, 0, 1, 1, (char *)&ms_tmp, |
| 1488 | sizeof(ms_tmp), sense); |
| 1489 | if (stat) |
| 1490 | return stat; |
| 1491 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1492 | msf_from_bcd(&ms_tmp.ent.addr.msf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | toc->last_session_lba = msf_to_lba(ms_tmp.ent.addr.msf.minute, |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1494 | ms_tmp.ent.addr.msf.second, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | ms_tmp.ent.addr.msf.frame); |
| 1496 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1497 | |
| 1498 | toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track); |
| 1499 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1500 | /* now try to get the total cdrom capacity */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1501 | stat = cdrom_get_last_written(cdi, &last_written); |
| 1502 | if (!stat && (last_written > toc->capacity)) { |
| 1503 | toc->capacity = last_written; |
| 1504 | set_capacity(info->disk, toc->capacity * sectors_per_frame); |
Alan Cox | dbe217a | 2006-06-25 05:47:44 -0700 | [diff] [blame] | 1505 | drive->probed_capacity = toc->capacity * sectors_per_frame; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1506 | } |
| 1507 | |
| 1508 | /* Remember that we've read this stuff. */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1509 | info->cd_flags |= IDE_CD_FLAG_TOC_VALID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | |
| 1511 | return 0; |
| 1512 | } |
| 1513 | |
Bartlomiej Zolnierkiewicz | 1780299 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1514 | int ide_cdrom_get_capabilities(ide_drive_t *drive, u8 *buf) |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1515 | { |
| 1516 | struct cdrom_info *info = drive->driver_data; |
| 1517 | struct cdrom_device_info *cdi = &info->devinfo; |
| 1518 | struct packet_command cgc; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1519 | int stat, attempts = 3, size = ATAPI_CAPABILITIES_PAGE_SIZE; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1520 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1521 | if ((info->cd_flags & IDE_CD_FLAG_FULL_CAPS_PAGE) == 0) |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1522 | size -= ATAPI_CAPABILITIES_PAGE_PAD_SIZE; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1523 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1524 | init_cdrom_command(&cgc, buf, size, CGC_DATA_UNKNOWN); |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1525 | do { |
| 1526 | /* we seem to get stat=0x01,err=0x00 the first time (??) */ |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1527 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CAPABILITIES_PAGE, 0); |
| 1528 | if (!stat) |
| 1529 | break; |
| 1530 | } while (--attempts); |
| 1531 | return stat; |
| 1532 | } |
| 1533 | |
Bartlomiej Zolnierkiewicz | 1780299 | 2008-02-01 23:09:25 +0100 | [diff] [blame] | 1534 | void ide_cdrom_update_speed(ide_drive_t *drive, u8 *buf) |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1535 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1536 | struct cdrom_info *cd = drive->driver_data; |
Bartlomiej Zolnierkiewicz | 481c8c6 | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1537 | u16 curspeed, maxspeed; |
| 1538 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1539 | curspeed = *(u16 *)&buf[8 + 14]; |
| 1540 | maxspeed = *(u16 *)&buf[8 + 8]; |
| 1541 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1542 | if (cd->cd_flags & IDE_CD_FLAG_LE_SPEED_FIELDS) { |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1543 | curspeed = le16_to_cpu(curspeed); |
| 1544 | maxspeed = le16_to_cpu(maxspeed); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1545 | } else { |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1546 | curspeed = be16_to_cpu(curspeed); |
| 1547 | maxspeed = be16_to_cpu(maxspeed); |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1548 | } |
Bartlomiej Zolnierkiewicz | 481c8c6 | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1549 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1550 | cd->current_speed = (curspeed + (176/2)) / 176; |
| 1551 | cd->max_speed = (maxspeed + (176/2)) / 176; |
Eric Piel | 9235e68 | 2005-06-23 00:10:29 -0700 | [diff] [blame] | 1552 | } |
| 1553 | |
Bartlomiej Zolnierkiewicz | 20e7f7e | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1554 | #define IDE_CD_CAPABILITIES \ |
| 1555 | (CDC_CLOSE_TRAY | CDC_OPEN_TRAY | CDC_LOCK | CDC_SELECT_SPEED | \ |
| 1556 | CDC_SELECT_DISC | CDC_MULTI_SESSION | CDC_MCN | CDC_MEDIA_CHANGED | \ |
| 1557 | CDC_PLAY_AUDIO | CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R | \ |
| 1558 | CDC_CD_RW | CDC_DVD | CDC_DVD_R | CDC_DVD_RAM | CDC_GENERIC_PACKET | \ |
| 1559 | CDC_MO_DRIVE | CDC_MRW | CDC_MRW_W | CDC_RAM) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1561 | static struct cdrom_device_ops ide_cdrom_dops = { |
| 1562 | .open = ide_cdrom_open_real, |
| 1563 | .release = ide_cdrom_release_real, |
| 1564 | .drive_status = ide_cdrom_drive_status, |
| 1565 | .media_changed = ide_cdrom_check_media_change_real, |
| 1566 | .tray_move = ide_cdrom_tray_move, |
| 1567 | .lock_door = ide_cdrom_lock_door, |
| 1568 | .select_speed = ide_cdrom_select_speed, |
| 1569 | .get_last_session = ide_cdrom_get_last_session, |
| 1570 | .get_mcn = ide_cdrom_get_mcn, |
| 1571 | .reset = ide_cdrom_reset, |
| 1572 | .audio_ioctl = ide_cdrom_audio_ioctl, |
Bartlomiej Zolnierkiewicz | 20e7f7e | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1573 | .capability = IDE_CD_CAPABILITIES, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1574 | .generic_packet = ide_cdrom_packet, |
| 1575 | }; |
| 1576 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1577 | static int ide_cdrom_register(ide_drive_t *drive, int nslots) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | { |
| 1579 | struct cdrom_info *info = drive->driver_data; |
| 1580 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 1581 | |
| 1582 | devinfo->ops = &ide_cdrom_dops; |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1583 | devinfo->speed = info->current_speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1584 | devinfo->capacity = nslots; |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1585 | devinfo->handle = drive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1586 | strcpy(devinfo->name, drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1587 | |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1588 | if (info->cd_flags & IDE_CD_FLAG_NO_SPEED_SELECT) |
Bartlomiej Zolnierkiewicz | 3cbd814 | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 1589 | devinfo->mask |= CDC_SELECT_SPEED; |
| 1590 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1591 | devinfo->disk = info->disk; |
| 1592 | return register_cdrom(devinfo); |
| 1593 | } |
| 1594 | |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1595 | static int ide_cdrom_probe_capabilities(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1596 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1597 | struct cdrom_info *cd = drive->driver_data; |
| 1598 | struct cdrom_device_info *cdi = &cd->devinfo; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1599 | u8 buf[ATAPI_CAPABILITIES_PAGE_SIZE]; |
| 1600 | mechtype_t mechtype; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1601 | int nslots = 1; |
| 1602 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1603 | cdi->mask = (CDC_CD_R | CDC_CD_RW | CDC_DVD | CDC_DVD_R | |
| 1604 | CDC_DVD_RAM | CDC_SELECT_DISC | CDC_PLAY_AUDIO | |
| 1605 | CDC_MO_DRIVE | CDC_RAM); |
| 1606 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1607 | if (drive->media == ide_optical) { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1608 | cdi->mask &= ~(CDC_MO_DRIVE | CDC_RAM); |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1609 | printk(KERN_ERR "%s: ATAPI magneto-optical drive\n", |
| 1610 | drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1611 | return nslots; |
| 1612 | } |
| 1613 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1614 | if (cd->cd_flags & IDE_CD_FLAG_PRE_ATAPI12) { |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1615 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1616 | cdi->mask &= ~CDC_PLAY_AUDIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1617 | return nslots; |
| 1618 | } |
| 1619 | |
| 1620 | /* |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1621 | * We have to cheat a little here. the packet will eventually be queued |
| 1622 | * with ide_cdrom_packet(), which extracts the drive from cdi->handle. |
| 1623 | * Since this device hasn't been registered with the Uniform layer yet, |
| 1624 | * it can't do this. Same goes for cdi->ops. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1625 | */ |
Jesper Juhl | 2a91f3e | 2005-10-30 15:02:45 -0800 | [diff] [blame] | 1626 | cdi->handle = drive; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1627 | cdi->ops = &ide_cdrom_dops; |
| 1628 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1629 | if (ide_cdrom_get_capabilities(drive, buf)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1630 | return 0; |
| 1631 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1632 | if ((buf[8 + 6] & 0x01) == 0) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1633 | cd->cd_flags |= IDE_CD_FLAG_NO_DOORLOCK; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1634 | if (buf[8 + 6] & 0x08) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1635 | cd->cd_flags &= ~IDE_CD_FLAG_NO_EJECT; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1636 | if (buf[8 + 3] & 0x01) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1637 | cdi->mask &= ~CDC_CD_R; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1638 | if (buf[8 + 3] & 0x02) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1639 | cdi->mask &= ~(CDC_CD_RW | CDC_RAM); |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1640 | if (buf[8 + 2] & 0x38) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1641 | cdi->mask &= ~CDC_DVD; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1642 | if (buf[8 + 3] & 0x20) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1643 | cdi->mask &= ~(CDC_DVD_RAM | CDC_RAM); |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1644 | if (buf[8 + 3] & 0x10) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1645 | cdi->mask &= ~CDC_DVD_R; |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1646 | 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] | 1647 | cdi->mask &= ~CDC_PLAY_AUDIO; |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1648 | |
| 1649 | mechtype = buf[8 + 6] >> 5; |
| 1650 | if (mechtype == mechtype_caddy || mechtype == mechtype_popup) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1651 | cdi->mask |= CDC_CLOSE_TRAY; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1652 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | if (cdi->sanyo_slot > 0) { |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1654 | cdi->mask &= ~CDC_SELECT_DISC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1655 | nslots = 3; |
Bartlomiej Zolnierkiewicz | cdf6000 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1656 | } else if (mechtype == mechtype_individual_changer || |
| 1657 | mechtype == mechtype_cartridge_changer) { |
Bartlomiej Zolnierkiewicz | 2609d06 | 2008-02-01 23:09:19 +0100 | [diff] [blame] | 1658 | nslots = cdrom_number_of_slots(cdi); |
| 1659 | if (nslots > 1) |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1660 | cdi->mask &= ~CDC_SELECT_DISC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1661 | } |
| 1662 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1663 | ide_cdrom_update_speed(drive, buf); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1664 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1665 | printk(KERN_INFO "%s: ATAPI", drive->name); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1666 | |
| 1667 | /* don't print speed if the drive reported 0 */ |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1668 | if (cd->max_speed) |
| 1669 | printk(KERN_CONT " %dX", cd->max_speed); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1670 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1671 | printk(KERN_CONT " %s", (cdi->mask & CDC_DVD) ? "CD-ROM" : "DVD-ROM"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1672 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1673 | if ((cdi->mask & CDC_DVD_R) == 0 || (cdi->mask & CDC_DVD_RAM) == 0) |
| 1674 | printk(KERN_CONT " DVD%s%s", |
| 1675 | (cdi->mask & CDC_DVD_R) ? "" : "-R", |
| 1676 | (cdi->mask & CDC_DVD_RAM) ? "" : "-RAM"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1677 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1678 | if ((cdi->mask & CDC_CD_R) == 0 || (cdi->mask & CDC_CD_RW) == 0) |
| 1679 | printk(KERN_CONT " CD%s%s", |
| 1680 | (cdi->mask & CDC_CD_R) ? "" : "-R", |
| 1681 | (cdi->mask & CDC_CD_RW) ? "" : "/RW"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1682 | |
Bartlomiej Zolnierkiewicz | 3f1b86d | 2008-02-01 23:09:20 +0100 | [diff] [blame] | 1683 | if ((cdi->mask & CDC_SELECT_DISC) == 0) |
| 1684 | printk(KERN_CONT " changer w/%d slots", nslots); |
| 1685 | else |
| 1686 | printk(KERN_CONT " drive"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | |
Bartlomiej Zolnierkiewicz | 455d80a | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1688 | 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] | 1689 | |
| 1690 | return nslots; |
| 1691 | } |
| 1692 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1693 | /* standard prep_rq_fn that builds 10 byte cmds */ |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 1694 | 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] | 1695 | { |
| 1696 | int hard_sect = queue_hardsect_size(q); |
| 1697 | long block = (long)rq->hard_sector / (hard_sect >> 9); |
| 1698 | unsigned long blocks = rq->hard_nr_sectors / (hard_sect >> 9); |
| 1699 | |
FUJITA Tomonori | d34c87e | 2008-04-29 14:37:52 +0200 | [diff] [blame] | 1700 | memset(rq->cmd, 0, BLK_MAX_CDB); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | |
| 1702 | if (rq_data_dir(rq) == READ) |
| 1703 | rq->cmd[0] = GPCMD_READ_10; |
| 1704 | else |
| 1705 | rq->cmd[0] = GPCMD_WRITE_10; |
| 1706 | |
| 1707 | /* |
| 1708 | * fill in lba |
| 1709 | */ |
| 1710 | rq->cmd[2] = (block >> 24) & 0xff; |
| 1711 | rq->cmd[3] = (block >> 16) & 0xff; |
| 1712 | rq->cmd[4] = (block >> 8) & 0xff; |
| 1713 | rq->cmd[5] = block & 0xff; |
| 1714 | |
| 1715 | /* |
| 1716 | * and transfer length |
| 1717 | */ |
| 1718 | rq->cmd[7] = (blocks >> 8) & 0xff; |
| 1719 | rq->cmd[8] = blocks & 0xff; |
| 1720 | rq->cmd_len = 10; |
| 1721 | return BLKPREP_OK; |
| 1722 | } |
| 1723 | |
| 1724 | /* |
| 1725 | * Most of the SCSI commands are supported directly by ATAPI devices. |
| 1726 | * This transform handles the few exceptions. |
| 1727 | */ |
| 1728 | static int ide_cdrom_prep_pc(struct request *rq) |
| 1729 | { |
| 1730 | u8 *c = rq->cmd; |
| 1731 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1732 | /* transform 6-byte read/write commands to the 10-byte version */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1733 | if (c[0] == READ_6 || c[0] == WRITE_6) { |
| 1734 | c[8] = c[4]; |
| 1735 | c[5] = c[3]; |
| 1736 | c[4] = c[2]; |
| 1737 | c[3] = c[1] & 0x1f; |
| 1738 | c[2] = 0; |
| 1739 | c[1] &= 0xe0; |
| 1740 | c[0] += (READ_10 - READ_6); |
| 1741 | rq->cmd_len = 10; |
| 1742 | return BLKPREP_OK; |
| 1743 | } |
| 1744 | |
| 1745 | /* |
| 1746 | * it's silly to pretend we understand 6-byte sense commands, just |
| 1747 | * reject with ILLEGAL_REQUEST and the caller should take the |
| 1748 | * appropriate action |
| 1749 | */ |
| 1750 | if (c[0] == MODE_SENSE || c[0] == MODE_SELECT) { |
| 1751 | rq->errors = ILLEGAL_REQUEST; |
| 1752 | return BLKPREP_KILL; |
| 1753 | } |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1754 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | return BLKPREP_OK; |
| 1756 | } |
| 1757 | |
Jens Axboe | 165125e | 2007-07-24 09:28:11 +0200 | [diff] [blame] | 1758 | 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] | 1759 | { |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1760 | if (blk_fs_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1761 | return ide_cdrom_prep_fs(q, rq); |
Jens Axboe | 4aff5e2 | 2006-08-10 08:44:47 +0200 | [diff] [blame] | 1762 | else if (blk_pc_request(rq)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1763 | return ide_cdrom_prep_pc(rq); |
| 1764 | |
| 1765 | return 0; |
| 1766 | } |
| 1767 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1768 | struct cd_list_entry { |
| 1769 | const char *id_model; |
| 1770 | const char *id_firmware; |
| 1771 | unsigned int cd_flags; |
| 1772 | }; |
| 1773 | |
Borislav Petkov | 5e657a9 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1774 | #ifdef CONFIG_IDE_PROC_FS |
| 1775 | static sector_t ide_cdrom_capacity(ide_drive_t *drive) |
| 1776 | { |
| 1777 | unsigned long capacity, sectors_per_frame; |
| 1778 | |
| 1779 | if (cdrom_read_capacity(drive, &capacity, §ors_per_frame, NULL)) |
| 1780 | return 0; |
| 1781 | |
| 1782 | return capacity * sectors_per_frame; |
| 1783 | } |
| 1784 | |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1785 | static int proc_idecd_read_capacity(char *page, char **start, off_t off, |
| 1786 | int count, int *eof, void *data) |
Borislav Petkov | 5e657a9 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1787 | { |
| 1788 | ide_drive_t *drive = data; |
| 1789 | int len; |
| 1790 | |
| 1791 | len = sprintf(page, "%llu\n", (long long)ide_cdrom_capacity(drive)); |
| 1792 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
| 1793 | } |
| 1794 | |
| 1795 | static ide_proc_entry_t idecd_proc[] = { |
| 1796 | { "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL }, |
| 1797 | { NULL, 0, NULL, NULL } |
| 1798 | }; |
| 1799 | |
| 1800 | static void ide_cdrom_add_settings(ide_drive_t *drive) |
| 1801 | { |
| 1802 | ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, |
| 1803 | &drive->dsc_overlap, NULL); |
| 1804 | } |
| 1805 | #else |
| 1806 | static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; } |
| 1807 | #endif |
| 1808 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1809 | static const struct cd_list_entry ide_cd_quirks_list[] = { |
| 1810 | /* Limit transfer size per interrupt. */ |
| 1811 | { "SAMSUNG CD-ROM SCR-2430", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, |
| 1812 | { "SAMSUNG CD-ROM SCR-2432", NULL, IDE_CD_FLAG_LIMIT_NFRAMES }, |
| 1813 | /* SCR-3231 doesn't support the SET_CD_SPEED command. */ |
| 1814 | { "SAMSUNG CD-ROM SCR-3231", NULL, IDE_CD_FLAG_NO_SPEED_SELECT }, |
| 1815 | /* Old NEC260 (not R) was released before ATAPI 1.2 spec. */ |
| 1816 | { "NEC CD-ROM DRIVE:260", "1.01", IDE_CD_FLAG_TOCADDR_AS_BCD | |
| 1817 | IDE_CD_FLAG_PRE_ATAPI12, }, |
| 1818 | /* Vertos 300, some versions of this drive like to talk BCD. */ |
| 1819 | { "V003S0DS", NULL, IDE_CD_FLAG_VERTOS_300_SSD, }, |
| 1820 | /* Vertos 600 ESD. */ |
| 1821 | { "V006E0DS", NULL, IDE_CD_FLAG_VERTOS_600_ESD, }, |
| 1822 | /* |
| 1823 | * Sanyo 3 CD changer uses a non-standard command for CD changing |
| 1824 | * (by default standard ATAPI support for CD changers is used). |
| 1825 | */ |
| 1826 | { "CD-ROM CDR-C3 G", NULL, IDE_CD_FLAG_SANYO_3CD }, |
| 1827 | { "CD-ROM CDR-C3G", NULL, IDE_CD_FLAG_SANYO_3CD }, |
| 1828 | { "CD-ROM CDR_C36", NULL, IDE_CD_FLAG_SANYO_3CD }, |
| 1829 | /* Stingray 8X CD-ROM. */ |
| 1830 | { "STINGRAY 8422 IDE 8X CD-ROM 7-27-95", NULL, IDE_CD_FLAG_PRE_ATAPI12}, |
| 1831 | /* |
| 1832 | * ACER 50X CD-ROM and WPI 32X CD-ROM require the full spec length |
| 1833 | * mode sense page capabilities size, but older drives break. |
| 1834 | */ |
| 1835 | { "ATAPI CD ROM DRIVE 50X MAX", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, |
| 1836 | { "WPI CDS-32X", NULL, IDE_CD_FLAG_FULL_CAPS_PAGE }, |
| 1837 | /* ACER/AOpen 24X CD-ROM has the speed fields byte-swapped. */ |
| 1838 | { "", "241N", IDE_CD_FLAG_LE_SPEED_FIELDS }, |
| 1839 | /* |
| 1840 | * Some drives used by Apple don't advertise audio play |
| 1841 | * but they do support reading TOC & audio datas. |
| 1842 | */ |
| 1843 | { "MATSHITADVD-ROM SR-8187", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 1844 | { "MATSHITADVD-ROM SR-8186", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 1845 | { "MATSHITADVD-ROM SR-8176", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
| 1846 | { "MATSHITADVD-ROM SR-8174", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
Borislav Petkov | acbe44e | 2008-02-26 21:50:32 +0100 | [diff] [blame] | 1847 | { "Optiarc DVD RW AD-5200A", NULL, IDE_CD_FLAG_PLAY_AUDIO_OK }, |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1848 | { NULL, NULL, 0 } |
| 1849 | }; |
| 1850 | |
| 1851 | static unsigned int ide_cd_flags(struct hd_driveid *id) |
| 1852 | { |
| 1853 | const struct cd_list_entry *cle = ide_cd_quirks_list; |
| 1854 | |
| 1855 | while (cle->id_model) { |
| 1856 | if (strcmp(cle->id_model, id->model) == 0 && |
| 1857 | (cle->id_firmware == NULL || |
| 1858 | strstr(id->fw_rev, cle->id_firmware))) |
| 1859 | return cle->cd_flags; |
| 1860 | cle++; |
| 1861 | } |
| 1862 | |
| 1863 | return 0; |
| 1864 | } |
| 1865 | |
Borislav Petkov | e5e076a | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1866 | static int ide_cdrom_setup(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1867 | { |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1868 | struct cdrom_info *cd = drive->driver_data; |
| 1869 | struct cdrom_device_info *cdi = &cd->devinfo; |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1870 | struct hd_driveid *id = drive->id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1871 | int nslots; |
| 1872 | |
| 1873 | blk_queue_prep_rq(drive->queue, ide_cdrom_prep_fn); |
| 1874 | blk_queue_dma_alignment(drive->queue, 31); |
| 1875 | drive->queue->unplug_delay = (1 * HZ) / 1000; |
| 1876 | if (!drive->queue->unplug_delay) |
| 1877 | drive->queue->unplug_delay = 1; |
| 1878 | |
| 1879 | drive->special.all = 0; |
| 1880 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1881 | cd->cd_flags = IDE_CD_FLAG_MEDIA_CHANGED | IDE_CD_FLAG_NO_EJECT | |
| 1882 | ide_cd_flags(id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1883 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1884 | if ((id->config & 0x0060) == 0x20) |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1885 | cd->cd_flags |= IDE_CD_FLAG_DRQ_INTERRUPT; |
Bartlomiej Zolnierkiewicz | b8d25de | 2008-02-01 23:09:19 +0100 | [diff] [blame] | 1886 | |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1887 | if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_300_SSD) && |
| 1888 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1889 | cd->cd_flags |= (IDE_CD_FLAG_TOCTRACKS_AS_BCD | |
| 1890 | IDE_CD_FLAG_TOCADDR_AS_BCD); |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1891 | else if ((cd->cd_flags & IDE_CD_FLAG_VERTOS_600_ESD) && |
| 1892 | id->fw_rev[4] == '1' && id->fw_rev[6] <= '2') |
Bartlomiej Zolnierkiewicz | 2bc4cf2 | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1893 | cd->cd_flags |= IDE_CD_FLAG_TOCTRACKS_AS_BCD; |
Bartlomiej Zolnierkiewicz | e59724c | 2008-02-01 23:09:22 +0100 | [diff] [blame] | 1894 | else if (cd->cd_flags & IDE_CD_FLAG_SANYO_3CD) |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1895 | /* 3 => use CD in slot 0 */ |
| 1896 | cdi->sanyo_slot = 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1897 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1898 | nslots = ide_cdrom_probe_capabilities(drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1900 | /* set correct block size */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | blk_queue_hardsect_size(drive->queue, CD_FRAMESIZE); |
| 1902 | |
Bartlomiej Zolnierkiewicz | cc12175 | 2008-04-27 15:38:24 +0200 | [diff] [blame] | 1903 | drive->dsc_overlap = (drive->next != drive); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | |
| 1905 | if (ide_cdrom_register(drive, nslots)) { |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 1906 | printk(KERN_ERR "%s: %s failed to register device with the" |
| 1907 | " cdrom driver.\n", drive->name, __func__); |
Bartlomiej Zolnierkiewicz | 4fe6717 | 2008-02-01 23:09:21 +0100 | [diff] [blame] | 1908 | cd->devinfo.handle = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1909 | return 1; |
| 1910 | } |
| 1911 | ide_cdrom_add_settings(drive); |
| 1912 | return 0; |
| 1913 | } |
| 1914 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 1915 | static void ide_cd_remove(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1916 | { |
| 1917 | struct cdrom_info *info = drive->driver_data; |
| 1918 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1919 | ide_proc_unregister_driver(drive, info->driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1920 | |
| 1921 | del_gendisk(info->disk); |
| 1922 | |
| 1923 | ide_cd_put(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1924 | } |
| 1925 | |
| 1926 | static void ide_cd_release(struct kref *kref) |
| 1927 | { |
| 1928 | struct cdrom_info *info = to_ide_cd(kref); |
| 1929 | struct cdrom_device_info *devinfo = &info->devinfo; |
| 1930 | ide_drive_t *drive = info->drive; |
| 1931 | struct gendisk *g = info->disk; |
| 1932 | |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1933 | kfree(info->toc); |
Akinobu Mita | 0a0c411 | 2008-03-26 12:09:02 +0100 | [diff] [blame] | 1934 | if (devinfo->handle == drive) |
| 1935 | unregister_cdrom(devinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1936 | drive->dsc_overlap = 0; |
| 1937 | drive->driver_data = NULL; |
| 1938 | blk_queue_prep_rq(drive->queue, NULL); |
| 1939 | g->private_data = NULL; |
| 1940 | put_disk(g); |
| 1941 | kfree(info); |
| 1942 | } |
| 1943 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 1944 | static int ide_cd_probe(ide_drive_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1945 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1946 | static ide_driver_t ide_cdrom_driver = { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1947 | .gen_driver = { |
Laurent Riffard | 4ef3b8f | 2005-11-18 22:15:40 +0100 | [diff] [blame] | 1948 | .owner = THIS_MODULE, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1949 | .name = "ide-cdrom", |
| 1950 | .bus = &ide_bus_type, |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 1951 | }, |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 1952 | .probe = ide_cd_probe, |
| 1953 | .remove = ide_cd_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1954 | .version = IDECD_VERSION, |
| 1955 | .media = ide_cdrom, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | .supports_dsc_overlap = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1957 | .do_request = ide_do_rw_cdrom, |
| 1958 | .end_request = ide_end_request, |
| 1959 | .error = __ide_error, |
| 1960 | .abort = __ide_abort, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1961 | #ifdef CONFIG_IDE_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1962 | .proc = idecd_proc, |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 1963 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | }; |
| 1965 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1966 | static int idecd_open(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | { |
| 1968 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 1969 | struct cdrom_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1970 | int rc = -ENOMEM; |
| 1971 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1972 | info = ide_cd_get(disk); |
| 1973 | if (!info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1974 | return -ENXIO; |
| 1975 | |
Borislav Petkov | 968c496 | 2008-04-26 17:36:37 +0200 | [diff] [blame] | 1976 | rc = cdrom_open(&info->devinfo, inode, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | |
| 1978 | if (rc < 0) |
| 1979 | ide_cd_put(info); |
| 1980 | |
| 1981 | return rc; |
| 1982 | } |
| 1983 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1984 | static int idecd_release(struct inode *inode, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | { |
| 1986 | struct gendisk *disk = inode->i_bdev->bd_disk; |
| 1987 | struct cdrom_info *info = ide_cd_g(disk); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1988 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 1989 | cdrom_release(&info->devinfo, file); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | |
| 1991 | ide_cd_put(info); |
| 1992 | |
| 1993 | return 0; |
| 1994 | } |
| 1995 | |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 1996 | static int idecd_set_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
| 1997 | { |
| 1998 | struct packet_command cgc; |
| 1999 | char buffer[16]; |
| 2000 | int stat; |
| 2001 | char spindown; |
| 2002 | |
| 2003 | if (copy_from_user(&spindown, (void __user *)arg, sizeof(char))) |
| 2004 | return -EFAULT; |
| 2005 | |
| 2006 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 2007 | |
| 2008 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); |
| 2009 | if (stat) |
| 2010 | return stat; |
| 2011 | |
| 2012 | buffer[11] = (buffer[11] & 0xf0) | (spindown & 0x0f); |
| 2013 | return cdrom_mode_select(cdi, &cgc); |
| 2014 | } |
| 2015 | |
| 2016 | static int idecd_get_spindown(struct cdrom_device_info *cdi, unsigned long arg) |
| 2017 | { |
| 2018 | struct packet_command cgc; |
| 2019 | char buffer[16]; |
| 2020 | int stat; |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 2021 | char spindown; |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 2022 | |
| 2023 | init_cdrom_command(&cgc, buffer, sizeof(buffer), CGC_DATA_UNKNOWN); |
| 2024 | |
| 2025 | stat = cdrom_mode_sense(cdi, &cgc, GPMODE_CDROM_PAGE, 0); |
| 2026 | if (stat) |
| 2027 | return stat; |
| 2028 | |
| 2029 | spindown = buffer[11] & 0x0f; |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 2030 | if (copy_to_user((void __user *)arg, &spindown, sizeof(char))) |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 2031 | return -EFAULT; |
| 2032 | return 0; |
| 2033 | } |
| 2034 | |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 2035 | static int idecd_ioctl(struct inode *inode, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2036 | unsigned int cmd, unsigned long arg) |
| 2037 | { |
| 2038 | struct block_device *bdev = inode->i_bdev; |
| 2039 | struct cdrom_info *info = ide_cd_g(bdev->bd_disk); |
| 2040 | int err; |
| 2041 | |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 2042 | switch (cmd) { |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 2043 | case CDROMSETSPINDOWN: |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 2044 | return idecd_set_spindown(&info->devinfo, arg); |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 2045 | case CDROMGETSPINDOWN: |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 2046 | return idecd_get_spindown(&info->devinfo, arg); |
| 2047 | default: |
| 2048 | break; |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 2049 | } |
Christoph Hellwig | 6a2900b | 2006-03-23 03:00:15 -0800 | [diff] [blame] | 2050 | |
| 2051 | err = generic_ide_ioctl(info->drive, file, bdev, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2052 | if (err == -EINVAL) |
| 2053 | err = cdrom_ioctl(file, &info->devinfo, inode, cmd, arg); |
| 2054 | |
| 2055 | return err; |
| 2056 | } |
| 2057 | |
| 2058 | static int idecd_media_changed(struct gendisk *disk) |
| 2059 | { |
| 2060 | struct cdrom_info *info = ide_cd_g(disk); |
| 2061 | return cdrom_media_changed(&info->devinfo); |
| 2062 | } |
| 2063 | |
| 2064 | static int idecd_revalidate_disk(struct gendisk *disk) |
| 2065 | { |
| 2066 | struct cdrom_info *info = ide_cd_g(disk); |
| 2067 | struct request_sense sense; |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 2068 | |
| 2069 | ide_cd_read_toc(info->drive, &sense); |
| 2070 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | return 0; |
| 2072 | } |
| 2073 | |
| 2074 | static struct block_device_operations idecd_ops = { |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 2075 | .owner = THIS_MODULE, |
| 2076 | .open = idecd_open, |
| 2077 | .release = idecd_release, |
| 2078 | .ioctl = idecd_ioctl, |
| 2079 | .media_changed = idecd_media_changed, |
| 2080 | .revalidate_disk = idecd_revalidate_disk |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2081 | }; |
| 2082 | |
Borislav Petkov | 5a3ea3b | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 2083 | /* module options */ |
Paolo Ciarrocchi | 9ce70fb | 2008-04-26 17:36:42 +0200 | [diff] [blame] | 2084 | static char *ignore; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2085 | |
| 2086 | module_param(ignore, charp, 0400); |
| 2087 | MODULE_DESCRIPTION("ATAPI CD-ROM Driver"); |
| 2088 | |
Russell King | 4031bbe | 2006-01-06 11:41:00 +0000 | [diff] [blame] | 2089 | static int ide_cd_probe(ide_drive_t *drive) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2090 | { |
| 2091 | struct cdrom_info *info; |
| 2092 | struct gendisk *g; |
| 2093 | struct request_sense sense; |
| 2094 | |
| 2095 | if (!strstr("ide-cdrom", drive->driver_req)) |
| 2096 | goto failed; |
| 2097 | if (!drive->present) |
| 2098 | goto failed; |
| 2099 | if (drive->media != ide_cdrom && drive->media != ide_optical) |
| 2100 | goto failed; |
| 2101 | /* skip drives that we were told to ignore */ |
| 2102 | if (ignore != NULL) { |
| 2103 | if (strstr(ignore, drive->name)) { |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 2104 | printk(KERN_INFO "ide-cd: ignoring drive %s\n", |
| 2105 | drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2106 | goto failed; |
| 2107 | } |
| 2108 | } |
| 2109 | if (drive->scsi) { |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 2110 | printk(KERN_INFO "ide-cd: passing drive %s to ide-scsi " |
| 2111 | "emulation.\n", drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2112 | goto failed; |
| 2113 | } |
Deepak Saxena | f5e3c2f | 2005-11-07 01:01:25 -0800 | [diff] [blame] | 2114 | info = kzalloc(sizeof(struct cdrom_info), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2115 | if (info == NULL) { |
Borislav Petkov | 83c8565 | 2008-04-26 22:25:15 +0200 | [diff] [blame] | 2116 | printk(KERN_ERR "%s: Can't allocate a cdrom structure\n", |
| 2117 | drive->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | goto failed; |
| 2119 | } |
| 2120 | |
| 2121 | g = alloc_disk(1 << PARTN_BITS); |
| 2122 | if (!g) |
| 2123 | goto out_free_cd; |
| 2124 | |
| 2125 | ide_init_disk(g, drive); |
| 2126 | |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2127 | ide_proc_register_driver(drive, &ide_cdrom_driver); |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2129 | kref_init(&info->kref); |
| 2130 | |
| 2131 | info->drive = drive; |
| 2132 | info->driver = &ide_cdrom_driver; |
| 2133 | info->disk = g; |
| 2134 | |
| 2135 | g->private_data = &info->driver; |
| 2136 | |
| 2137 | drive->driver_data = info; |
| 2138 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2139 | g->minors = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2140 | g->driverfs_dev = &drive->gendev; |
| 2141 | g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE; |
| 2142 | if (ide_cdrom_setup(drive)) { |
Bartlomiej Zolnierkiewicz | 7662d04 | 2007-05-10 00:01:10 +0200 | [diff] [blame] | 2143 | ide_proc_unregister_driver(drive, &ide_cdrom_driver); |
Bartlomiej Zolnierkiewicz | 05017db | 2007-12-24 15:23:43 +0100 | [diff] [blame] | 2144 | ide_cd_release(&info->kref); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2145 | goto failed; |
| 2146 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | |
Bartlomiej Zolnierkiewicz | 139c829 | 2008-02-01 23:09:24 +0100 | [diff] [blame] | 2148 | ide_cd_read_toc(drive, &sense); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2149 | g->fops = &idecd_ops; |
| 2150 | g->flags |= GENHD_FL_REMOVABLE; |
| 2151 | add_disk(g); |
| 2152 | return 0; |
| 2153 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2154 | out_free_cd: |
| 2155 | kfree(info); |
| 2156 | failed: |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2157 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2158 | } |
| 2159 | |
| 2160 | static void __exit ide_cdrom_exit(void) |
| 2161 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2162 | driver_unregister(&ide_cdrom_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | } |
Bartlomiej Zolnierkiewicz | 17514e8 | 2005-11-19 22:24:35 +0100 | [diff] [blame] | 2164 | |
| 2165 | static int __init ide_cdrom_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | { |
Bartlomiej Zolnierkiewicz | 8604aff | 2005-05-26 14:55:34 +0200 | [diff] [blame] | 2167 | return driver_register(&ide_cdrom_driver.gen_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2168 | } |
| 2169 | |
Kay Sievers | 263756e | 2005-12-12 18:03:44 +0100 | [diff] [blame] | 2170 | MODULE_ALIAS("ide:*m-cdrom*"); |
Bartlomiej Zolnierkiewicz | 972560f | 2008-02-01 23:09:23 +0100 | [diff] [blame] | 2171 | MODULE_ALIAS("ide-cd"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2172 | module_init(ide_cdrom_init); |
| 2173 | module_exit(ide_cdrom_exit); |
| 2174 | MODULE_LICENSE("GPL"); |