linux/include/linux/cdrom.h
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   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 */
 154struct cdrom_msf0               
 155{
 156        __u8    minute;
 157        __u8    second;
 158        __u8    frame;
 159};
 160
 161/* Address in either MSF or logical format */
 162union cdrom_addr                
 163{
 164        struct cdrom_msf0       msf;
 165        int                     lba;
 166};
 167
 168/* This struct is used by the CDROMPLAYMSF ioctl */ 
 169struct 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 */
 180struct 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 */
 189struct 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 */
 196struct 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 */
 205struct 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 */
 219struct 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 */
 230struct 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 */
 238struct 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 */
 247struct 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 */  
 261struct cdrom_mcn 
 262{
 263  __u8 medium_catalog_number[14]; /* 13 ASCII digits, null-terminated */
 264};
 265
 266/* This is used by the CDROMPLAYBLK ioctl */
 267struct 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 */
 281struct 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
 526struct 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
 544struct dvd_physical {
 545        __u8 type;
 546        __u8 layer_num;
 547        struct dvd_layer layer[DVD_LAYERS];
 548};
 549
 550struct dvd_copyright {
 551        __u8 type;
 552
 553        __u8 layer_num;
 554        __u8 cpst;
 555        __u8 rmi;
 556};
 557
 558struct dvd_disckey {
 559        __u8 type;
 560
 561        unsigned agid           : 2;
 562        __u8 value[2048];
 563};
 564
 565struct dvd_bca {
 566        __u8 type;
 567
 568        int len;
 569        __u8 value[188];
 570};
 571
 572struct dvd_manufact {
 573        __u8 type;
 574
 575        __u8 layer_num;
 576        int len;
 577        __u8 value[2048];
 578};
 579
 580typedef 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 */
 613typedef __u8 dvd_key[5];                /* 40-bit value, MSB is first elem. */
 614typedef __u8 dvd_challenge[10]; /* 80-bit value, MSB is first elem. */
 615
 616struct dvd_lu_send_agid {
 617        __u8 type;
 618        unsigned agid           : 2;
 619};
 620
 621struct dvd_host_send_challenge {
 622        __u8 type;
 623        unsigned agid           : 2;
 624
 625        dvd_challenge chal;
 626};
 627
 628struct dvd_send_key {
 629        __u8 type;
 630        unsigned agid           : 2;
 631
 632        dvd_key key;
 633};
 634
 635struct 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
 652struct 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
 663struct dvd_lu_send_asf {
 664        __u8 type;
 665        unsigned agid           : 2;
 666
 667        unsigned asf            : 1;
 668};
 669
 670struct dvd_host_send_rpcstate {
 671        __u8 type;
 672        __u8 pdrc;
 673};
 674
 675struct 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
 683typedef 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
 697struct 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
 755struct 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 */
 782struct 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
 809typedef 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
 855typedef 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
 895struct feature_header {
 896        __u32 data_len;
 897        __u8 reserved1;
 898        __u8 reserved2;
 899        __u16 curr_profile;
 900};
 901
 902struct 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
 915struct 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 */
 936struct 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
 965struct 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: */
 995extern int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev,
 996                        fmode_t mode);
 997extern void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode);
 998extern int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev,
 999                       fmode_t mode, unsigned int cmd, unsigned long arg);
1000extern unsigned int cdrom_check_events(struct cdrom_device_info *cdi,
1001                                       unsigned int clearing);
1002extern int cdrom_media_changed(struct cdrom_device_info *);
1003
1004extern int register_cdrom(struct cdrom_device_info *cdi);
1005extern void unregister_cdrom(struct cdrom_device_info *cdi);
1006
1007typedef struct {
1008    int data;
1009    int audio;
1010    int cdi;
1011    int xa;
1012    long error;
1013} tracktype;
1014
1015extern int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written);
1016extern int cdrom_number_of_slots(struct cdrom_device_info *cdi);
1017extern int cdrom_mode_select(struct cdrom_device_info *cdi,
1018                             struct packet_command *cgc);
1019extern int cdrom_mode_sense(struct cdrom_device_info *cdi,
1020                            struct packet_command *cgc,
1021                            int page_code, int page_control);
1022extern 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
1028struct 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
1049struct 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
1062struct cdrom_changer_info {
1063        struct cdrom_mechstat_header hdr;
1064        struct cdrom_slot slots[CDROM_MAX_SLOTS];
1065};
1066
1067typedef 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
1075typedef 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
1130struct 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
1146typedef 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
1164struct 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
1178struct 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
1196extern int cdrom_get_media_event(struct cdrom_device_info *cdi, struct media_event_desc *med);
1197
1198static 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
1208static 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
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