1 /* 2 * -- <linux/cdrom.h> 3 * General header file for linux CD-ROM drivers 4 * Copyright (C) 1992 David Giller, rafetmad@oxy.edu 5 * 1994, 1995 Eberhard Mönkeberg, emoenke@gwdg.de 6 * 1996 David van Leeuwen, david@tm.tno.nl 7 * 1997, 1998 Erik Andersen, andersee@debian.org 8 * 1998-2002 Jens Axboe, axboe@suse.de 9 */ 10 11 #ifndef _LINUX_CDROM_H 12 #define _LINUX_CDROM_H 13 14 #include <linux/types.h> 15 #include <asm/byteorder.h> 16 17 /******************************************************* 18 * As of Linux 2.1.x, all Linux CD-ROM application programs will use this 19 * (and only this) include file. It is my hope to provide Linux with 20 * a uniform interface between software accessing CD-ROMs and the various 21 * device drivers that actually talk to the drives. There may still be 22 * 23 different kinds of strange CD-ROM drives, but at least there will 23 * now be one, and only one, Linux CD-ROM interface. 24 * 25 * Additionally, as of Linux 2.1.x, all Linux application programs 26 * should use the O_NONBLOCK option when opening a CD-ROM device 27 * for subsequent ioctl commands. This allows for neat system errors 28 * like "No medium found" or "Wrong medium type" upon attempting to 29 * mount or play an empty slot, mount an audio disc, or play a data disc. 30 * Generally, changing an application program to support O_NONBLOCK 31 * is as easy as the following: 32 * - drive = open("/dev/cdrom", O_RDONLY); 33 * + drive = open("/dev/cdrom", O_RDONLY | O_NONBLOCK); 34 * It is worth the small change. 35 * 36 * Patches for many common CD programs (provided by David A. van Leeuwen) 37 * can be found at: ftp://ftp.gwdg.de/pub/linux/cdrom/drivers/cm206/ 38 * 39 *******************************************************/ 40 41 /* When a driver supports a certain function, but the cdrom drive we are 42 * using doesn't, we will return the error EDRIVE_CANT_DO_THIS. We will 43 * borrow the "Operation not supported" error from the network folks to 44 * accomplish this. Maybe someday we will get a more targeted error code, 45 * but this will do for now... */ 46 #define EDRIVE_CANT_DO_THIS EOPNOTSUPP 47 48 /******************************************************* 49 * The CD-ROM IOCTL commands -- these should be supported by 50 * all the various cdrom drivers. For the CD-ROM ioctls, we 51 * will commandeer byte 0x53, or 'S'. 52 *******************************************************/ 53 #define CDROMPAUSE 0x5301 /* Pause Audio Operation */ 54 #define CDROMRESUME 0x5302 /* Resume paused Audio Operation */ 55 #define CDROMPLAYMSF 0x5303 /* Play Audio MSF (struct cdrom_msf) */ 56 #define CDROMPLAYTRKIND 0x5304 /* Play Audio Track/index 57 (struct cdrom_ti) */ 58 #define CDROMREADTOCHDR 0x5305 /* Read TOC header 59 (struct cdrom_tochdr) */ 60 #define CDROMREADTOCENTRY 0x5306 /* Read TOC entry 61 (struct cdrom_tocentry) */ 62 #define CDROMSTOP 0x5307 /* Stop the cdrom drive */ 63 #define CDROMSTART 0x5308 /* Start the cdrom drive */ 64 #define CDROMEJECT 0x5309 /* Ejects the cdrom media */ 65 #define CDROMVOLCTRL 0x530a /* Control output volume 66 (struct cdrom_volctrl) */ 67 #define CDROMSUBCHNL 0x530b /* Read subchannel data 68 (struct cdrom_subchnl) */ 69 #define CDROMREADMODE2 0x530c /* Read CDROM mode 2 data (2336 Bytes) 70 (struct cdrom_read) */ 71 #define CDROMREADMODE1 0x530d /* Read CDROM mode 1 data (2048 Bytes) 72 (struct cdrom_read) */ 73 #define CDROMREADAUDIO 0x530e /* (struct cdrom_read_audio) */ 74 #define CDROMEJECT_SW 0x530f /* enable(1)/disable(0) auto-ejecting */ 75 #define CDROMMULTISESSION 0x5310 /* Obtain the start-of-last-session 76 address of multi session disks 77 (struct cdrom_multisession) */ 78 #define CDROM_GET_MCN 0x5311 /* Obtain the "Universal Product Code" 79 if available (struct cdrom_mcn) */ 80 #define CDROM_GET_UPC CDROM_GET_MCN /* This one is deprecated, 81 but here anyway for compatibility */ 82 #define CDROMRESET 0x5312 /* hard-reset the drive */ 83 #define CDROMVOLREAD 0x5313 /* Get the drive's volume setting 84 (struct cdrom_volctrl) */ 85 #define CDROMREADRAW 0x5314 /* read data in raw mode (2352 Bytes) 86 (struct cdrom_read) */ 87 /* 88 * These ioctls are used only used in aztcd.c and optcd.c 89 */ 90 #define CDROMREADCOOKED 0x5315 /* read data in cooked mode */ 91 #define CDROMSEEK 0x5316 /* seek msf address */ 92 93 /* 94 * This ioctl is only used by the scsi-cd driver. 95 It is for playing audio in logical block addressing mode. 96 */ 97 #define CDROMPLAYBLK 0x5317 /* (struct cdrom_blk) */ 98 99 /* 100 * These ioctls are only used in optcd.c 101 */ 102 #define CDROMREADALL 0x5318 /* read all 2646 bytes */ 103 104 /* 105 * These ioctls are (now) only in ide-cd.c for controlling 106 * drive spindown time. They should be implemented in the 107 * Uniform driver, via generic packet commands, GPCMD_MODE_SELECT_10, 108 * GPCMD_MODE_SENSE_10 and the GPMODE_POWER_PAGE... 109 * -Erik 110 */ 111 #define CDROMGETSPINDOWN 0x531d 112 #define CDROMSETSPINDOWN 0x531e 113 114 /* 115 * These ioctls are implemented through the uniform CD-ROM driver 116 * They _will_ be adopted by all CD-ROM drivers, when all the CD-ROM 117 * drivers are eventually ported to the uniform CD-ROM driver interface. 118 */ 119 #define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */ 120 #define CDROM_SET_OPTIONS 0x5320 /* Set behavior options */ 121 #define CDROM_CLEAR_OPTIONS 0x5321 /* Clear behavior options */ 122 #define CDROM_SELECT_SPEED 0x5322 /* Set the CD-ROM speed */ 123 #define CDROM_SELECT_DISC 0x5323 /* Select disc (for juke-boxes) */ 124 #define CDROM_MEDIA_CHANGED 0x5325 /* Check is media changed */ 125 #define CDROM_DRIVE_STATUS 0x5326 /* Get tray position, etc. */ 126 #define CDROM_DISC_STATUS 0x5327 /* Get disc type, etc. */ 127 #define CDROM_CHANGER_NSLOTS 0x5328 /* Get number of slots */ 128 #define CDROM_LOCKDOOR 0x5329 /* lock or unlock door */ 129 #define CDROM_DEBUG 0x5330 /* Turn debug messages on/off */ 130 #define CDROM_GET_CAPABILITY 0x5331 /* get capabilities */ 131 132 /* Note that scsi/scsi_ioctl.h also uses 0x5382 - 0x5386. 133 * Future CDROM ioctls should be kept below 0x537F 134 */ 135 136 /* This ioctl is only used by sbpcd at the moment */ 137 #define CDROMAUDIOBUFSIZ 0x5382 /* set the audio buffer size */ 138 /* conflict with SCSI_IOCTL_GET_IDLUN */ 139 140 /* DVD-ROM Specific ioctls */ 141 #define DVD_READ_STRUCT 0x5390 /* Read structure */ 142 #define DVD_WRITE_STRUCT 0x5391 /* Write structure */ 143 #define DVD_AUTH 0x5392 /* Authentication */ 144 145 #define CDROM_SEND_PACKET 0x5393 /* send a packet to the drive */ 146 #define CDROM_NEXT_WRITABLE 0x5394 /* get next writable block */ 147 #define CDROM_LAST_WRITTEN 0x5395 /* get last block written on disc */ 148 149 /******************************************************* 150 * CDROM IOCTL structures 151 *******************************************************/ 152 153 /* Address in MSF format */ 154 struct cdrom_msf0 155 { 156 __u8 minute; 157 __u8 second; 158 __u8 frame; 159 }; 160 161 /* Address in either MSF or logical format */ 162 union cdrom_addr 163 { 164 struct cdrom_msf0 msf; 165 int lba; 166 }; 167 168 /* This struct is used by the CDROMPLAYMSF ioctl */ 169 struct cdrom_msf 170 { 171 __u8 cdmsf_min0; /* start minute */ 172 __u8 cdmsf_sec0; /* start second */ 173 __u8 cdmsf_frame0; /* start frame */ 174 __u8 cdmsf_min1; /* end minute */ 175 __u8 cdmsf_sec1; /* end second */ 176 __u8 cdmsf_frame1; /* end frame */ 177 }; 178 179 /* This struct is used by the CDROMPLAYTRKIND ioctl */ 180 struct cdrom_ti 181 { 182 __u8 cdti_trk0; /* start track */ 183 __u8 cdti_ind0; /* start index */ 184 __u8 cdti_trk1; /* end track */ 185 __u8 cdti_ind1; /* end index */ 186 }; 187 188 /* This struct is used by the CDROMREADTOCHDR ioctl */ 189 struct cdrom_tochdr 190 { 191 __u8 cdth_trk0; /* start track */ 192 __u8 cdth_trk1; /* end track */ 193 }; 194 195 /* This struct is used by the CDROMVOLCTRL and CDROMVOLREAD ioctls */ 196 struct cdrom_volctrl 197 { 198 __u8 channel0; 199 __u8 channel1; 200 __u8 channel2; 201 __u8 channel3; 202 }; 203 204 /* This struct is used by the CDROMSUBCHNL ioctl */ 205 struct cdrom_subchnl 206 { 207 __u8 cdsc_format; 208 __u8 cdsc_audiostatus; 209 __u8 cdsc_adr: 4; 210 __u8 cdsc_ctrl: 4; 211 __u8 cdsc_trk; 212 __u8 cdsc_ind; 213 union cdrom_addr cdsc_absaddr; 214 union cdrom_addr cdsc_reladdr; 215 }; 216 217 218 /* This struct is used by the CDROMREADTOCENTRY ioctl */ 219 struct cdrom_tocentry 220 { 221 __u8 cdte_track; 222 __u8 cdte_adr :4; 223 __u8 cdte_ctrl :4; 224 __u8 cdte_format; 225 union cdrom_addr cdte_addr; 226 __u8 cdte_datamode; 227 }; 228 229 /* This struct is used by the CDROMREADMODE1, and CDROMREADMODE2 ioctls */ 230 struct cdrom_read 231 { 232 int cdread_lba; 233 char *cdread_bufaddr; 234 int cdread_buflen; 235 }; 236 237 /* This struct is used by the CDROMREADAUDIO ioctl */ 238 struct cdrom_read_audio 239 { 240 union cdrom_addr addr; /* frame address */ 241 __u8 addr_format; /* CDROM_LBA or CDROM_MSF */ 242 int nframes; /* number of 2352-byte-frames to read at once */ 243 __u8 __user *buf; /* frame buffer (size: nframes*2352 bytes) */ 244 }; 245 246 /* This struct is used with the CDROMMULTISESSION ioctl */ 247 struct cdrom_multisession 248 { 249 union cdrom_addr addr; /* frame address: start-of-last-session 250 (not the new "frame 16"!). Only valid 251 if the "xa_flag" is true. */ 252 __u8 xa_flag; /* 1: "is XA disk" */ 253 __u8 addr_format; /* CDROM_LBA or CDROM_MSF */ 254 }; 255 256 /* This struct is used with the CDROM_GET_MCN ioctl. 257 * Very few audio discs actually have Universal Product Code information, 258 * which should just be the Medium Catalog Number on the box. Also note 259 * that the way the codeis written on CD is _not_ uniform across all discs! 260 */ 261 struct cdrom_mcn 262 { 263 __u8 medium_catalog_number[14]; /* 13 ASCII digits, null-terminated */ 264 }; 265 266 /* This is used by the CDROMPLAYBLK ioctl */ 267 struct cdrom_blk 268 { 269 unsigned from; 270 unsigned short len; 271 }; 272 273 #define CDROM_PACKET_SIZE 12 274 275 #define CGC_DATA_UNKNOWN 0 276 #define CGC_DATA_WRITE 1 277 #define CGC_DATA_READ 2 278 #define CGC_DATA_NONE 3 279 280 /* for CDROM_PACKET_COMMAND ioctl */ 281 struct cdrom_generic_command 282 { 283 unsigned char cmd[CDROM_PACKET_SIZE]; 284 unsigned char __user *buffer; 285 unsigned int buflen; 286 int stat; 287 struct request_sense __user *sense; 288 unsigned char data_direction; 289 int quiet; 290 int timeout; 291 void __user *reserved[1]; /* unused, actually */ 292 }; 293 294 /* 295 * A CD-ROM physical sector size is 2048, 2052, 2056, 2324, 2332, 2336, 296 * 2340, or 2352 bytes long. 297 298 * Sector types of the standard CD-ROM data formats: 299 * 300 * format sector type user data size (bytes) 301 * ----------------------------------------------------------------------------- 302 * 1 (Red Book) CD-DA 2352 (CD_FRAMESIZE_RAW) 303 * 2 (Yellow Book) Mode1 Form1 2048 (CD_FRAMESIZE) 304 * 3 (Yellow Book) Mode1 Form2 2336 (CD_FRAMESIZE_RAW0) 305 * 4 (Green Book) Mode2 Form1 2048 (CD_FRAMESIZE) 306 * 5 (Green Book) Mode2 Form2 2328 (2324+4 spare bytes) 307 * 308 * 309 * The layout of the standard CD-ROM data formats: 310 * ----------------------------------------------------------------------------- 311 * - audio (red): | audio_sample_bytes | 312 * | 2352 | 313 * 314 * - data (yellow, mode1): | sync - head - data - EDC - zero - ECC | 315 * | 12 - 4 - 2048 - 4 - 8 - 276 | 316 * 317 * - data (yellow, mode2): | sync - head - data | 318 * | 12 - 4 - 2336 | 319 * 320 * - XA data (green, mode2 form1): | sync - head - sub - data - EDC - ECC | 321 * | 12 - 4 - 8 - 2048 - 4 - 276 | 322 * 323 * - XA data (green, mode2 form2): | sync - head - sub - data - Spare | 324 * | 12 - 4 - 8 - 2324 - 4 | 325 * 326 */ 327 328 /* Some generally useful CD-ROM information -- mostly based on the above */ 329 #define CD_MINS 74 /* max. minutes per CD, not really a limit */ 330 #define CD_SECS 60 /* seconds per minute */ 331 #define CD_FRAMES 75 /* frames per second */ 332 #define CD_SYNC_SIZE 12 /* 12 sync bytes per raw data frame */ 333 #define CD_MSF_OFFSET 150 /* MSF numbering offset of first frame */ 334 #define CD_CHUNK_SIZE 24 /* lowest-level "data bytes piece" */ 335 #define CD_NUM_OF_CHUNKS 98 /* chunks per frame */ 336 #define CD_FRAMESIZE_SUB 96 /* subchannel data "frame" size */ 337 #define CD_HEAD_SIZE 4 /* header (address) bytes per raw data frame */ 338 #define CD_SUBHEAD_SIZE 8 /* subheader bytes per raw XA data frame */ 339 #define CD_EDC_SIZE 4 /* bytes EDC per most raw data frame types */ 340 #define CD_ZERO_SIZE 8 /* bytes zero per yellow book mode 1 frame */ 341 #define CD_ECC_SIZE 276 /* bytes ECC per most raw data frame types */ 342 #define CD_FRAMESIZE 2048 /* bytes per frame, "cooked" mode */ 343 #define CD_FRAMESIZE_RAW 2352 /* bytes per frame, "raw" mode */ 344 #define CD_FRAMESIZE_RAWER 2646 /* The maximum possible returned bytes */ 345 /* most drives don't deliver everything: */ 346 #define CD_FRAMESIZE_RAW1 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE) /*2340*/ 347 #define CD_FRAMESIZE_RAW0 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE-CD_HEAD_SIZE) /*2336*/ 348 349 #define CD_XA_HEAD (CD_HEAD_SIZE+CD_SUBHEAD_SIZE) /* "before data" part of raw XA frame */ 350 #define CD_XA_TAIL (CD_EDC_SIZE+CD_ECC_SIZE) /* "after data" part of raw XA frame */ 351 #define CD_XA_SYNC_HEAD (CD_SYNC_SIZE+CD_XA_HEAD) /* sync bytes + header of XA frame */ 352 353 /* CD-ROM address types (cdrom_tocentry.cdte_format) */ 354 #define CDROM_LBA 0x01 /* "logical block": first frame is #0 */ 355 #define CDROM_MSF 0x02 /* "minute-second-frame": binary, not bcd here! */ 356 357 /* bit to tell whether track is data or audio (cdrom_tocentry.cdte_ctrl) */ 358 #define CDROM_DATA_TRACK 0x04 359 360 /* The leadout track is always 0xAA, regardless of # of tracks on disc */ 361 #define CDROM_LEADOUT 0xAA 362 363 /* audio states (from SCSI-2, but seen with other drives, too) */ 364 #define CDROM_AUDIO_INVALID 0x00 /* audio status not supported */ 365 #define CDROM_AUDIO_PLAY 0x11 /* audio play operation in progress */ 366 #define CDROM_AUDIO_PAUSED 0x12 /* audio play operation paused */ 367 #define CDROM_AUDIO_COMPLETED 0x13 /* audio play successfully completed */ 368 #define CDROM_AUDIO_ERROR 0x14 /* audio play stopped due to error */ 369 #define CDROM_AUDIO_NO_STATUS 0x15 /* no current audio status to return */ 370 371 /* capability flags used with the uniform CD-ROM driver */ 372 #define CDC_CLOSE_TRAY 0x1 /* caddy systems _can't_ close */ 373 #define CDC_OPEN_TRAY 0x2 /* but _can_ eject. */ 374 #define CDC_LOCK 0x4 /* disable manual eject */ 375 #define CDC_SELECT_SPEED 0x8 /* programmable speed */ 376 #define CDC_SELECT_DISC 0x10 /* select disc from juke-box */ 377 #define CDC_MULTI_SESSION 0x20 /* read sessions>1 */ 378 #define CDC_MCN 0x40 /* Medium Catalog Number */ 379 #define CDC_MEDIA_CHANGED 0x80 /* media changed */ 380 #define CDC_PLAY_AUDIO 0x100 /* audio functions */ 381 #define CDC_RESET 0x200 /* hard reset device */ 382 #define CDC_DRIVE_STATUS 0x800 /* driver implements drive status */ 383 #define CDC_GENERIC_PACKET 0x1000 /* driver implements generic packets */ 384 #define CDC_CD_R 0x2000 /* drive is a CD-R */ 385 #define CDC_CD_RW 0x4000 /* drive is a CD-RW */ 386 #define CDC_DVD 0x8000 /* drive is a DVD */ 387 #define CDC_DVD_R 0x10000 /* drive can write DVD-R */ 388 #define CDC_DVD_RAM 0x20000 /* drive can write DVD-RAM */ 389 #define CDC_MO_DRIVE 0x40000 /* drive is an MO device */ 390 #define CDC_MRW 0x80000 /* drive can read MRW */ 391 #define CDC_MRW_W 0x100000 /* drive can write MRW */ 392 #define CDC_RAM 0x200000 /* ok to open for WRITE */ 393 394 /* drive status possibilities returned by CDROM_DRIVE_STATUS ioctl */ 395 #define CDS_NO_INFO 0 /* if not implemented */ 396 #define CDS_NO_DISC 1 397 #define CDS_TRAY_OPEN 2 398 #define CDS_DRIVE_NOT_READY 3 399 #define CDS_DISC_OK 4 400 401 /* return values for the CDROM_DISC_STATUS ioctl */ 402 /* can also return CDS_NO_[INFO|DISC], from above */ 403 #define CDS_AUDIO 100 404 #define CDS_DATA_1 101 405 #define CDS_DATA_2 102 406 #define CDS_XA_2_1 103 407 #define CDS_XA_2_2 104 408 #define CDS_MIXED 105 409 410 /* User-configurable behavior options for the uniform CD-ROM driver */ 411 #define CDO_AUTO_CLOSE 0x1 /* close tray on first open() */ 412 #define CDO_AUTO_EJECT 0x2 /* open tray on last release() */ 413 #define CDO_USE_FFLAGS 0x4 /* use O_NONBLOCK information on open */ 414 #define CDO_LOCK 0x8 /* lock tray on open files */ 415 #define CDO_CHECK_TYPE 0x10 /* check type on open for data */ 416 417 /* Special codes used when specifying changer slots. */ 418 #define CDSL_NONE (INT_MAX-1) 419 #define CDSL_CURRENT INT_MAX 420 421 /* For partition based multisession access. IDE can handle 64 partitions 422 * per drive - SCSI CD-ROM's use minors to differentiate between the 423 * various drives, so we can't do multisessions the same way there. 424 * Use the -o session=x option to mount on them. 425 */ 426 #define CD_PART_MAX 64 427 #define CD_PART_MASK (CD_PART_MAX - 1) 428 429 /********************************************************************* 430 * Generic Packet commands, MMC commands, and such 431 *********************************************************************/ 432 433 /* The generic packet command opcodes for CD/DVD Logical Units, 434 * From Table 57 of the SFF8090 Ver. 3 (Mt. Fuji) draft standard. */ 435 #define GPCMD_BLANK 0xa1 436 #define GPCMD_CLOSE_TRACK 0x5b 437 #define GPCMD_FLUSH_CACHE 0x35 438 #define GPCMD_FORMAT_UNIT 0x04 439 #define GPCMD_GET_CONFIGURATION 0x46 440 #define GPCMD_GET_EVENT_STATUS_NOTIFICATION 0x4a 441 #define GPCMD_GET_PERFORMANCE 0xac 442 #define GPCMD_INQUIRY 0x12 443 #define GPCMD_LOAD_UNLOAD 0xa6 444 #define GPCMD_MECHANISM_STATUS 0xbd 445 #define GPCMD_MODE_SELECT_10 0x55 446 #define GPCMD_MODE_SENSE_10 0x5a 447 #define GPCMD_PAUSE_RESUME 0x4b 448 #define GPCMD_PLAY_AUDIO_10 0x45 449 #define GPCMD_PLAY_AUDIO_MSF 0x47 450 #define GPCMD_PLAY_AUDIO_TI 0x48 451 #define GPCMD_PLAY_CD 0xbc 452 #define GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1e 453 #define GPCMD_READ_10 0x28 454 #define GPCMD_READ_12 0xa8 455 #define GPCMD_READ_BUFFER 0x3c 456 #define GPCMD_READ_BUFFER_CAPACITY 0x5c 457 #define GPCMD_READ_CDVD_CAPACITY 0x25 458 #define GPCMD_READ_CD 0xbe 459 #define GPCMD_READ_CD_MSF 0xb9 460 #define GPCMD_READ_DISC_INFO 0x51 461 #define GPCMD_READ_DVD_STRUCTURE 0xad 462 #define GPCMD_READ_FORMAT_CAPACITIES 0x23 463 #define GPCMD_READ_HEADER 0x44 464 #define GPCMD_READ_TRACK_RZONE_INFO 0x52 465 #define GPCMD_READ_SUBCHANNEL 0x42 466 #define GPCMD_READ_TOC_PMA_ATIP 0x43 467 #define GPCMD_REPAIR_RZONE_TRACK 0x58 468 #define GPCMD_REPORT_KEY 0xa4 469 #define GPCMD_REQUEST_SENSE 0x03 470 #define GPCMD_RESERVE_RZONE_TRACK 0x53 471 #define GPCMD_SEND_CUE_SHEET 0x5d 472 #define GPCMD_SCAN 0xba 473 #define GPCMD_SEEK 0x2b 474 #define GPCMD_SEND_DVD_STRUCTURE 0xbf 475 #define GPCMD_SEND_EVENT 0xa2 476 #define GPCMD_SEND_KEY 0xa3 477 #define GPCMD_SEND_OPC 0x54 478 #define GPCMD_SET_READ_AHEAD 0xa7 479 #define GPCMD_SET_STREAMING 0xb6 480 #define GPCMD_START_STOP_UNIT 0x1b 481 #define GPCMD_STOP_PLAY_SCAN 0x4e 482 #define GPCMD_TEST_UNIT_READY 0x00 483 #define GPCMD_VERIFY_10 0x2f 484 #define GPCMD_WRITE_10 0x2a 485 #define GPCMD_WRITE_12 0xaa 486 #define GPCMD_WRITE_AND_VERIFY_10 0x2e 487 #define GPCMD_WRITE_BUFFER 0x3b 488 /* This is listed as optional in ATAPI 2.6, but is (curiously) 489 * missing from Mt. Fuji, Table 57. It _is_ mentioned in Mt. Fuji 490 * Table 377 as an MMC command for SCSi devices though... Most ATAPI 491 * drives support it. */ 492 #define GPCMD_SET_SPEED 0xbb 493 /* This seems to be a SCSI specific CD-ROM opcode 494 * to play data at track/index */ 495 #define GPCMD_PLAYAUDIO_TI 0x48 496 /* 497 * From MS Media Status Notification Support Specification. For 498 * older drives only. 499 */ 500 #define GPCMD_GET_MEDIA_STATUS 0xda 501 502 /* Mode page codes for mode sense/set */ 503 #define GPMODE_VENDOR_PAGE 0x00 504 #define GPMODE_R_W_ERROR_PAGE 0x01 505 #define GPMODE_WRITE_PARMS_PAGE 0x05 506 #define GPMODE_WCACHING_PAGE 0x08 507 #define GPMODE_AUDIO_CTL_PAGE 0x0e 508 #define GPMODE_POWER_PAGE 0x1a 509 #define GPMODE_FAULT_FAIL_PAGE 0x1c 510 #define GPMODE_TO_PROTECT_PAGE 0x1d 511 #define GPMODE_CAPABILITIES_PAGE 0x2a 512 #define GPMODE_ALL_PAGES 0x3f 513 /* Not in Mt. Fuji, but in ATAPI 2.6 -- deprecated now in favor 514 * of MODE_SENSE_POWER_PAGE */ 515 #define GPMODE_CDROM_PAGE 0x0d 516 517 518 519 /* DVD struct types */ 520 #define DVD_STRUCT_PHYSICAL 0x00 521 #define DVD_STRUCT_COPYRIGHT 0x01 522 #define DVD_STRUCT_DISCKEY 0x02 523 #define DVD_STRUCT_BCA 0x03 524 #define DVD_STRUCT_MANUFACT 0x04 525 526 struct dvd_layer { 527 __u8 book_version : 4; 528 __u8 book_type : 4; 529 __u8 min_rate : 4; 530 __u8 disc_size : 4; 531 __u8 layer_type : 4; 532 __u8 track_path : 1; 533 __u8 nlayers : 2; 534 __u8 track_density : 4; 535 __u8 linear_density : 4; 536 __u8 bca : 1; 537 __u32 start_sector; 538 __u32 end_sector; 539 __u32 end_sector_l0; 540 }; 541 542 #define DVD_LAYERS 4 543 544 struct dvd_physical { 545 __u8 type; 546 __u8 layer_num; 547 struct dvd_layer layer[DVD_LAYERS]; 548 }; 549 550 struct dvd_copyright { 551 __u8 type; 552 553 __u8 layer_num; 554 __u8 cpst; 555 __u8 rmi; 556 }; 557 558 struct dvd_disckey { 559 __u8 type; 560 561 unsigned agid : 2; 562 __u8 value[2048]; 563 }; 564 565 struct dvd_bca { 566 __u8 type; 567 568 int len; 569 __u8 value[188]; 570 }; 571 572 struct dvd_manufact { 573 __u8 type; 574 575 __u8 layer_num; 576 int len; 577 __u8 value[2048]; 578 }; 579 580 typedef union { 581 __u8 type; 582 583 struct dvd_physical physical; 584 struct dvd_copyright copyright; 585 struct dvd_disckey disckey; 586 struct dvd_bca bca; 587 struct dvd_manufact manufact; 588 } dvd_struct; 589 590 /* 591 * DVD authentication ioctl 592 */ 593 594 /* Authentication states */ 595 #define DVD_LU_SEND_AGID 0 596 #define DVD_HOST_SEND_CHALLENGE 1 597 #define DVD_LU_SEND_KEY1 2 598 #define DVD_LU_SEND_CHALLENGE 3 599 #define DVD_HOST_SEND_KEY2 4 600 601 /* Termination states */ 602 #define DVD_AUTH_ESTABLISHED 5 603 #define DVD_AUTH_FAILURE 6 604 605 /* Other functions */ 606 #define DVD_LU_SEND_TITLE_KEY 7 607 #define DVD_LU_SEND_ASF 8 608 #define DVD_INVALIDATE_AGID 9 609 #define DVD_LU_SEND_RPC_STATE 10 610 #define DVD_HOST_SEND_RPC_STATE 11 611 612 /* State data */ 613 typedef __u8 dvd_key[5]; /* 40-bit value, MSB is first elem. */ 614 typedef __u8 dvd_challenge[10]; /* 80-bit value, MSB is first elem. */ 615 616 struct dvd_lu_send_agid { 617 __u8 type; 618 unsigned agid : 2; 619 }; 620 621 struct dvd_host_send_challenge { 622 __u8 type; 623 unsigned agid : 2; 624 625 dvd_challenge chal; 626 }; 627 628 struct dvd_send_key { 629 __u8 type; 630 unsigned agid : 2; 631 632 dvd_key key; 633 }; 634 635 struct dvd_lu_send_challenge { 636 __u8 type; 637 unsigned agid : 2; 638 639 dvd_challenge chal; 640 }; 641 642 #define DVD_CPM_NO_COPYRIGHT 0 643 #define DVD_CPM_COPYRIGHTED 1 644 645 #define DVD_CP_SEC_NONE 0 646 #define DVD_CP_SEC_EXIST 1 647 648 #define DVD_CGMS_UNRESTRICTED 0 649 #define DVD_CGMS_SINGLE 2 650 #define DVD_CGMS_RESTRICTED 3 651 652 struct dvd_lu_send_title_key { 653 __u8 type; 654 unsigned agid : 2; 655 656 dvd_key title_key; 657 int lba; 658 unsigned cpm : 1; 659 unsigned cp_sec : 1; 660 unsigned cgms : 2; 661 }; 662 663 struct dvd_lu_send_asf { 664 __u8 type; 665 unsigned agid : 2; 666 667 unsigned asf : 1; 668 }; 669 670 struct dvd_host_send_rpcstate { 671 __u8 type; 672 __u8 pdrc; 673 }; 674 675 struct dvd_lu_send_rpcstate { 676 __u8 type : 2; 677 __u8 vra : 3; 678 __u8 ucca : 3; 679 __u8 region_mask; 680 __u8 rpc_scheme; 681 }; 682 683 typedef union { 684 __u8 type; 685 686 struct dvd_lu_send_agid lsa; 687 struct dvd_host_send_challenge hsc; 688 struct dvd_send_key lsk; 689 struct dvd_lu_send_challenge lsc; 690 struct dvd_send_key hsk; 691 struct dvd_lu_send_title_key lstk; 692 struct dvd_lu_send_asf lsasf; 693 struct dvd_host_send_rpcstate hrpcs; 694 struct dvd_lu_send_rpcstate lrpcs; 695 } dvd_authinfo; 696 697 struct request_sense { 698 #if defined(__BIG_ENDIAN_BITFIELD) 699 __u8 valid : 1; 700 __u8 error_code : 7; 701 #elif defined(__LITTLE_ENDIAN_BITFIELD) 702 __u8 error_code : 7; 703 __u8 valid : 1; 704 #endif 705 __u8 segment_number; 706 #if defined(__BIG_ENDIAN_BITFIELD) 707 __u8 reserved1 : 2; 708 __u8 ili : 1; 709 __u8 reserved2 : 1; 710 __u8 sense_key : 4; 711 #elif defined(__LITTLE_ENDIAN_BITFIELD) 712 __u8 sense_key : 4; 713 __u8 reserved2 : 1; 714 __u8 ili : 1; 715 __u8 reserved1 : 2; 716 #endif 717 __u8 information[4]; 718 __u8 add_sense_len; 719 __u8 command_info[4]; 720 __u8 asc; 721 __u8 ascq; 722 __u8 fruc; 723 __u8 sks[3]; 724 __u8 asb[46]; 725 }; 726 727 /* 728 * feature profile 729 */ 730 #define CDF_RWRT 0x0020 /* "Random Writable" */ 731 #define CDF_HWDM 0x0024 /* "Hardware Defect Management" */ 732 #define CDF_MRW 0x0028 733 734 /* 735 * media status bits 736 */ 737 #define CDM_MRW_NOTMRW 0 738 #define CDM_MRW_BGFORMAT_INACTIVE 1 739 #define CDM_MRW_BGFORMAT_ACTIVE 2 740 #define CDM_MRW_BGFORMAT_COMPLETE 3 741 742 /* 743 * mrw address spaces 744 */ 745 #define MRW_LBA_DMA 0 746 #define MRW_LBA_GAA 1 747 748 /* 749 * mrw mode pages (first is deprecated) -- probed at init time and 750 * cdi->mrw_mode_page is set 751 */ 752 #define MRW_MODE_PC_PRE1 0x2c 753 #define MRW_MODE_PC 0x03 754 755 struct mrw_feature_desc { 756 __be16 feature_code; 757 #if defined(__BIG_ENDIAN_BITFIELD) 758 __u8 reserved1 : 2; 759 __u8 feature_version : 4; 760 __u8 persistent : 1; 761 __u8 curr : 1; 762 #elif defined(__LITTLE_ENDIAN_BITFIELD) 763 __u8 curr : 1; 764 __u8 persistent : 1; 765 __u8 feature_version : 4; 766 __u8 reserved1 : 2; 767 #endif 768 __u8 add_len; 769 #if defined(__BIG_ENDIAN_BITFIELD) 770 __u8 reserved2 : 7; 771 __u8 write : 1; 772 #elif defined(__LITTLE_ENDIAN_BITFIELD) 773 __u8 write : 1; 774 __u8 reserved2 : 7; 775 #endif 776 __u8 reserved3; 777 __u8 reserved4; 778 __u8 reserved5; 779 }; 780 781 /* cf. mmc4r02g.pdf 5.3.10 Random Writable Feature (0020h) pg 197 of 635 */ 782 struct rwrt_feature_desc { 783 __be16 feature_code; 784 #if defined(__BIG_ENDIAN_BITFIELD) 785 __u8 reserved1 : 2; 786 __u8 feature_version : 4; 787 __u8 persistent : 1; 788 __u8 curr : 1; 789 #elif defined(__LITTLE_ENDIAN_BITFIELD) 790 __u8 curr : 1; 791 __u8 persistent : 1; 792 __u8 feature_version : 4; 793 __u8 reserved1 : 2; 794 #endif 795 __u8 add_len; 796 __u32 last_lba; 797 __u32 block_size; 798 __u16 blocking; 799 #if defined(__BIG_ENDIAN_BITFIELD) 800 __u8 reserved2 : 7; 801 __u8 page_present : 1; 802 #elif defined(__LITTLE_ENDIAN_BITFIELD) 803 __u8 page_present : 1; 804 __u8 reserved2 : 7; 805 #endif 806 __u8 reserved3; 807 }; 808 809 typedef struct { 810 __be16 disc_information_length; 811 #if defined(__BIG_ENDIAN_BITFIELD) 812 __u8 reserved1 : 3; 813 __u8 erasable : 1; 814 __u8 border_status : 2; 815 __u8 disc_status : 2; 816 #elif defined(__LITTLE_ENDIAN_BITFIELD) 817 __u8 disc_status : 2; 818 __u8 border_status : 2; 819 __u8 erasable : 1; 820 __u8 reserved1 : 3; 821 #else 822 #error "Please fix <asm/byteorder.h>" 823 #endif 824 __u8 n_first_track; 825 __u8 n_sessions_lsb; 826 __u8 first_track_lsb; 827 __u8 last_track_lsb; 828 #if defined(__BIG_ENDIAN_BITFIELD) 829 __u8 did_v : 1; 830 __u8 dbc_v : 1; 831 __u8 uru : 1; 832 __u8 reserved2 : 2; 833 __u8 dbit : 1; 834 __u8 mrw_status : 2; 835 #elif defined(__LITTLE_ENDIAN_BITFIELD) 836 __u8 mrw_status : 2; 837 __u8 dbit : 1; 838 __u8 reserved2 : 2; 839 __u8 uru : 1; 840 __u8 dbc_v : 1; 841 __u8 did_v : 1; 842 #endif 843 __u8 disc_type; 844 __u8 n_sessions_msb; 845 __u8 first_track_msb; 846 __u8 last_track_msb; 847 __u32 disc_id; 848 __u32 lead_in; 849 __u32 lead_out; 850 __u8 disc_bar_code[8]; 851 __u8 reserved3; 852 __u8 n_opc; 853 } disc_information; 854 855 typedef struct { 856 __be16 track_information_length; 857 __u8 track_lsb; 858 __u8 session_lsb; 859 __u8 reserved1; 860 #if defined(__BIG_ENDIAN_BITFIELD) 861 __u8 reserved2 : 2; 862 __u8 damage : 1; 863 __u8 copy : 1; 864 __u8 track_mode : 4; 865 __u8 rt : 1; 866 __u8 blank : 1; 867 __u8 packet : 1; 868 __u8 fp : 1; 869 __u8 data_mode : 4; 870 __u8 reserved3 : 6; 871 __u8 lra_v : 1; 872 __u8 nwa_v : 1; 873 #elif defined(__LITTLE_ENDIAN_BITFIELD) 874 __u8 track_mode : 4; 875 __u8 copy : 1; 876 __u8 damage : 1; 877 __u8 reserved2 : 2; 878 __u8 data_mode : 4; 879 __u8 fp : 1; 880 __u8 packet : 1; 881 __u8 blank : 1; 882 __u8 rt : 1; 883 __u8 nwa_v : 1; 884 __u8 lra_v : 1; 885 __u8 reserved3 : 6; 886 #endif 887 __be32 track_start; 888 __be32 next_writable; 889 __be32 free_blocks; 890 __be32 fixed_packet_size; 891 __be32 track_size; 892 __be32 last_rec_address; 893 } track_information; 894 895 struct feature_header { 896 __u32 data_len; 897 __u8 reserved1; 898 __u8 reserved2; 899 __u16 curr_profile; 900 }; 901 902 struct mode_page_header { 903 __be16 mode_data_length; 904 __u8 medium_type; 905 __u8 reserved1; 906 __u8 reserved2; 907 __u8 reserved3; 908 __be16 desc_length; 909 }; 910 911 #ifdef __KERNEL__ 912 #include <linux/fs.h> /* not really needed, later.. */ 913 #include <linux/list.h> 914 915 struct packet_command 916 { 917 unsigned char cmd[CDROM_PACKET_SIZE]; 918 unsigned char *buffer; 919 unsigned int buflen; 920 int stat; 921 struct request_sense *sense; 922 unsigned char data_direction; 923 int quiet; 924 int timeout; 925 void *reserved[1]; 926 }; 927 928 /* 929 * _OLD will use PIO transfer on atapi devices, _BPC_* will use DMA 930 */ 931 #define CDDA_OLD 0 /* old style */ 932 #define CDDA_BPC_SINGLE 1 /* single frame block pc */ 933 #define CDDA_BPC_FULL 2 /* multi frame block pc */ 934 935 /* Uniform cdrom data structures for cdrom.c */ 936 struct cdrom_device_info { 937 struct cdrom_device_ops *ops; /* link to device_ops */ 938 struct list_head list; /* linked list of all device_info */ 939 struct gendisk *disk; /* matching block layer disk */ 940 void *handle; /* driver-dependent data */ 941 /* specifications */ 942 int mask; /* mask of capability: disables them */ 943 int speed; /* maximum speed for reading data */ 944 int capacity; /* number of discs in jukebox */ 945 /* device-related storage */ 946 unsigned int options : 30; /* options flags */ 947 unsigned mc_flags : 2; /* media change buffer flags */ 948 unsigned int vfs_events; /* cached events for vfs path */ 949 unsigned int ioctl_events; /* cached events for ioctl path */ 950 int use_count; /* number of times device opened */ 951 char name[20]; /* name of the device type */ 952 /* per-device flags */ 953 __u8 sanyo_slot : 2; /* Sanyo 3 CD changer support */ 954 __u8 keeplocked : 1; /* CDROM_LOCKDOOR status */ 955 __u8 reserved : 5; /* not used yet */ 956 int cdda_method; /* see flags */ 957 __u8 last_sense; 958 __u8 media_written; /* dirty flag, DVD+RW bookkeeping */ 959 unsigned short mmc3_profile; /* current MMC3 profile */ 960 int for_data; 961 int (*exit)(struct cdrom_device_info *); 962 int mrw_mode_page; 963 }; 964 965 struct cdrom_device_ops { 966 /* routines */ 967 int (*open) (struct cdrom_device_info *, int); 968 void (*release) (struct cdrom_device_info *); 969 int (*drive_status) (struct cdrom_device_info *, int); 970 unsigned int (*check_events) (struct cdrom_device_info *cdi, 971 unsigned int clearing, int slot); 972 int (*media_changed) (struct cdrom_device_info *, int); 973 int (*tray_move) (struct cdrom_device_info *, int); 974 int (*lock_door) (struct cdrom_device_info *, int); 975 int (*select_speed) (struct cdrom_device_info *, int); 976 int (*select_disc) (struct cdrom_device_info *, int); 977 int (*get_last_session) (struct cdrom_device_info *, 978 struct cdrom_multisession *); 979 int (*get_mcn) (struct cdrom_device_info *, 980 struct cdrom_mcn *); 981 /* hard reset device */ 982 int (*reset) (struct cdrom_device_info *); 983 /* play stuff */ 984 int (*audio_ioctl) (struct cdrom_device_info *,unsigned int, void *); 985 986 /* driver specifications */ 987 const int capability; /* capability flags */ 988 int n_minors; /* number of active minor devices */ 989 /* handle uniform packets for scsi type devices (scsi,atapi) */ 990 int (*generic_packet) (struct cdrom_device_info *, 991 struct packet_command *); 992 }; 993 994 /* the general block_device operations structure: */ 995 extern int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, 996 fmode_t mode); 997 extern void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode); 998 extern int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev, 999 fmode_t mode, unsigned int cmd, unsigned long arg); 1000 extern unsigned int cdrom_check_events(struct cdrom_device_info *cdi, 1001 unsigned int clearing); 1002 extern int cdrom_media_changed(struct cdrom_device_info *); 1003 1004 extern int register_cdrom(struct cdrom_device_info *cdi); 1005 extern void unregister_cdrom(struct cdrom_device_info *cdi); 1006 1007 typedef struct { 1008 int data; 1009 int audio; 1010 int cdi; 1011 int xa; 1012 long error; 1013 } tracktype; 1014 1015 extern int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written); 1016 extern int cdrom_number_of_slots(struct cdrom_device_info *cdi); 1017 extern int cdrom_mode_select(struct cdrom_device_info *cdi, 1018 struct packet_command *cgc); 1019 extern int cdrom_mode_sense(struct cdrom_device_info *cdi, 1020 struct packet_command *cgc, 1021 int page_code, int page_control); 1022 extern void init_cdrom_command(struct packet_command *cgc, 1023 void *buffer, int len, int type); 1024 1025 /* The SCSI spec says there could be 256 slots. */ 1026 #define CDROM_MAX_SLOTS 256 1027 1028 struct cdrom_mechstat_header { 1029 #if defined(__BIG_ENDIAN_BITFIELD) 1030 __u8 fault : 1; 1031 __u8 changer_state : 2; 1032 __u8 curslot : 5; 1033 __u8 mech_state : 3; 1034 __u8 door_open : 1; 1035 __u8 reserved1 : 4; 1036 #elif defined(__LITTLE_ENDIAN_BITFIELD) 1037 __u8 curslot : 5; 1038 __u8 changer_state : 2; 1039 __u8 fault : 1; 1040 __u8 reserved1 : 4; 1041 __u8 door_open : 1; 1042 __u8 mech_state : 3; 1043 #endif 1044 __u8 curlba[3]; 1045 __u8 nslots; 1046 __u16 slot_tablelen; 1047 }; 1048 1049 struct cdrom_slot { 1050 #if defined(__BIG_ENDIAN_BITFIELD) 1051 __u8 disc_present : 1; 1052 __u8 reserved1 : 6; 1053 __u8 change : 1; 1054 #elif defined(__LITTLE_ENDIAN_BITFIELD) 1055 __u8 change : 1; 1056 __u8 reserved1 : 6; 1057 __u8 disc_present : 1; 1058 #endif 1059 __u8 reserved2[3]; 1060 }; 1061 1062 struct cdrom_changer_info { 1063 struct cdrom_mechstat_header hdr; 1064 struct cdrom_slot slots[CDROM_MAX_SLOTS]; 1065 }; 1066 1067 typedef enum { 1068 mechtype_caddy = 0, 1069 mechtype_tray = 1, 1070 mechtype_popup = 2, 1071 mechtype_individual_changer = 4, 1072 mechtype_cartridge_changer = 5 1073 } mechtype_t; 1074 1075 typedef struct { 1076 #if defined(__BIG_ENDIAN_BITFIELD) 1077 __u8 ps : 1; 1078 __u8 reserved1 : 1; 1079 __u8 page_code : 6; 1080 __u8 page_length; 1081 __u8 reserved2 : 1; 1082 __u8 bufe : 1; 1083 __u8 ls_v : 1; 1084 __u8 test_write : 1; 1085 __u8 write_type : 4; 1086 __u8 multi_session : 2; /* or border, DVD */ 1087 __u8 fp : 1; 1088 __u8 copy : 1; 1089 __u8 track_mode : 4; 1090 __u8 reserved3 : 4; 1091 __u8 data_block_type : 4; 1092 #elif defined(__LITTLE_ENDIAN_BITFIELD) 1093 __u8 page_code : 6; 1094 __u8 reserved1 : 1; 1095 __u8 ps : 1; 1096 __u8 page_length; 1097 __u8 write_type : 4; 1098 __u8 test_write : 1; 1099 __u8 ls_v : 1; 1100 __u8 bufe : 1; 1101 __u8 reserved2 : 1; 1102 __u8 track_mode : 4; 1103 __u8 copy : 1; 1104 __u8 fp : 1; 1105 __u8 multi_session : 2; /* or border, DVD */ 1106 __u8 data_block_type : 4; 1107 __u8 reserved3 : 4; 1108 #endif 1109 __u8 link_size; 1110 __u8 reserved4; 1111 #if defined(__BIG_ENDIAN_BITFIELD) 1112 __u8 reserved5 : 2; 1113 __u8 app_code : 6; 1114 #elif defined(__LITTLE_ENDIAN_BITFIELD) 1115 __u8 app_code : 6; 1116 __u8 reserved5 : 2; 1117 #endif 1118 __u8 session_format; 1119 __u8 reserved6; 1120 __be32 packet_size; 1121 __u16 audio_pause; 1122 __u8 mcn[16]; 1123 __u8 isrc[16]; 1124 __u8 subhdr0; 1125 __u8 subhdr1; 1126 __u8 subhdr2; 1127 __u8 subhdr3; 1128 } __attribute__((packed)) write_param_page; 1129 1130 struct modesel_head 1131 { 1132 __u8 reserved1; 1133 __u8 medium; 1134 __u8 reserved2; 1135 __u8 block_desc_length; 1136 __u8 density; 1137 __u8 number_of_blocks_hi; 1138 __u8 number_of_blocks_med; 1139 __u8 number_of_blocks_lo; 1140 __u8 reserved3; 1141 __u8 block_length_hi; 1142 __u8 block_length_med; 1143 __u8 block_length_lo; 1144 }; 1145 1146 typedef struct { 1147 __u16 report_key_length; 1148 __u8 reserved1; 1149 __u8 reserved2; 1150 #if defined(__BIG_ENDIAN_BITFIELD) 1151 __u8 type_code : 2; 1152 __u8 vra : 3; 1153 __u8 ucca : 3; 1154 #elif defined(__LITTLE_ENDIAN_BITFIELD) 1155 __u8 ucca : 3; 1156 __u8 vra : 3; 1157 __u8 type_code : 2; 1158 #endif 1159 __u8 region_mask; 1160 __u8 rpc_scheme; 1161 __u8 reserved3; 1162 } rpc_state_t; 1163 1164 struct event_header { 1165 __be16 data_len; 1166 #if defined(__BIG_ENDIAN_BITFIELD) 1167 __u8 nea : 1; 1168 __u8 reserved1 : 4; 1169 __u8 notification_class : 3; 1170 #elif defined(__LITTLE_ENDIAN_BITFIELD) 1171 __u8 notification_class : 3; 1172 __u8 reserved1 : 4; 1173 __u8 nea : 1; 1174 #endif 1175 __u8 supp_event_class; 1176 }; 1177 1178 struct media_event_desc { 1179 #if defined(__BIG_ENDIAN_BITFIELD) 1180 __u8 reserved1 : 4; 1181 __u8 media_event_code : 4; 1182 __u8 reserved2 : 6; 1183 __u8 media_present : 1; 1184 __u8 door_open : 1; 1185 #elif defined(__LITTLE_ENDIAN_BITFIELD) 1186 __u8 media_event_code : 4; 1187 __u8 reserved1 : 4; 1188 __u8 door_open : 1; 1189 __u8 media_present : 1; 1190 __u8 reserved2 : 6; 1191 #endif 1192 __u8 start_slot; 1193 __u8 end_slot; 1194 }; 1195 1196 extern int cdrom_get_media_event(struct cdrom_device_info *cdi, struct media_event_desc *med); 1197 1198 static inline void lba_to_msf(int lba, u8 *m, u8 *s, u8 *f) 1199 { 1200 lba += CD_MSF_OFFSET; 1201 lba &= 0xffffff; /* negative lbas use only 24 bits */ 1202 *m = lba / (CD_SECS * CD_FRAMES); 1203 lba %= (CD_SECS * CD_FRAMES); 1204 *s = lba / CD_FRAMES; 1205 *f = lba % CD_FRAMES; 1206 } 1207 1208 static inline int msf_to_lba(u8 m, u8 s, u8 f) 1209 { 1210 return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET; 1211 } 1212 #endif /* End of kernel only stuff */ 1213 1214 #endif /* _LINUX_CDROM_H */ 1215