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/*
 * -- <linux/cdrom.h>
 * General header file for linux CD-ROM drivers
 * Copyright (C) 1992         David Giller, rafetmad@oxy.edu
 *               1994, 1995   Eberhard Moenkeberg, emoenke@gwdg.de
 *               1996         David van Leeuwen, david@tm.tno.nl
 *               1997, 1998   Erik Andersen, andersee@debian.org
 *               1998-2000    Jens Axboe, axboe@suse.de
 */

 
#ifndef _LINUX_CDROM_H
#define _LINUX_CDROM_H

#include <asm/byteorder.h>

/*******************************************************
 * As of Linux 2.1.x, all Linux CD-ROM application programs will use this
 * (and only this) include file.  It is my hope to provide Linux with
 * a uniform interface between software accessing CD-ROMs and the various
 * device drivers that actually talk to the drives.  There may still be
 * 23 different kinds of strange CD-ROM drives, but at least there will
 * now be one, and only one, Linux CD-ROM interface.
 *
 * Additionally, as of Linux 2.1.x, all Linux application programs
 * should use the O_NONBLOCK option when opening a CD-ROM device
 * for subsequent ioctl commands.  This allows for neat system errors
 * like "No medium found" or "Wrong medium type" upon attempting to
 * mount or play an empty slot, mount an audio disc, or play a data disc.
 * Generally, changing an application program to support O_NONBLOCK
 * is as easy as the following:
 *       -    drive = open("/dev/cdrom", O_RDONLY);
 *       +    drive = open("/dev/cdrom", O_RDONLY | O_NONBLOCK);
 * It is worth the small change.
 *
 *  Patches for many common CD programs (provided by David A. van Leeuwen)
 *  can be found at:  ftp://ftp.gwdg.de/pub/linux/cdrom/drivers/cm206/
 *
 *******************************************************/


/* When a driver supports a certain function, but the cdrom drive we are
 * using doesn't, we will return the error EDRIVE_CANT_DO_THIS.  We will
 * borrow the "Operation not supported" error from the network folks to
 * accomplish this.  Maybe someday we will get a more targeted error code,
 * but this will do for now... */

#define EDRIVE_CANT_DO_THIS  EOPNOTSUPP

/*******************************************************
 * The CD-ROM IOCTL commands  -- these should be supported by
 * all the various cdrom drivers.  For the CD-ROM ioctls, we
 * will commandeer byte 0x53, or 'S'.
 *******************************************************/

#define CDROMPAUSE              0x5301 /* Pause Audio Operation */
#define CDROMRESUME             0x5302 /* Resume paused Audio Operation */
#define CDROMPLAYMSF            0x5303 /* Play Audio MSF (struct cdrom_msf) */
#define CDROMPLAYTRKIND         0x5304 /* Play Audio Track/index
                                           (struct cdrom_ti) */
#define CDROMREADTOCHDR         0x5305 /* Read TOC header
                                           (struct cdrom_tochdr) */
#define CDROMREADTOCENTRY       0x5306 /* Read TOC entry
                                           (struct cdrom_tocentry) */
#define CDROMSTOP               0x5307 /* Stop the cdrom drive */
#define CDROMSTART              0x5308 /* Start the cdrom drive */
#define CDROMEJECT              0x5309 /* Ejects the cdrom media */
#define CDROMVOLCTRL            0x530a /* Control output volume
                                           (struct cdrom_volctrl) */
#define CDROMSUBCHNL            0x530b /* Read subchannel data
                                           (struct cdrom_subchnl) */
#define CDROMREADMODE2          0x530c /* Read CDROM mode 2 data (2336 Bytes)
                                           (struct cdrom_read) */
#define CDROMREADMODE1          0x530d /* Read CDROM mode 1 data (2048 Bytes)
                                           (struct cdrom_read) */
#define CDROMREADAUDIO          0x530e /* (struct cdrom_read_audio) */
#define CDROMEJECT_SW           0x530f /* enable(1)/disable(0) auto-ejecting */
#define CDROMMULTISESSION       0x5310 /* Obtain the start-of-last-session
                                           address of multi session disks
                                           (struct cdrom_multisession) */
#define CDROM_GET_MCN           0x5311 /* Obtain the "Universal Product Code"
                                           if available (struct cdrom_mcn) */
#define CDROM_GET_UPC           CDROM_GET_MCN  /* This one is depricated,
                                          but here anyway for compatibility */
#define CDROMRESET              0x5312 /* hard-reset the drive */
#define CDROMVOLREAD            0x5313 /* Get the drive's volume setting
                                          (struct cdrom_volctrl) */
#define CDROMREADRAW            0x5314  /* read data in raw mode (2352 Bytes)
                                           (struct cdrom_read) */
/*
 * These ioctls are used only used in aztcd.c and optcd.c
 */

#define CDROMREADCOOKED         0x5315  /* read data in cooked mode */
#define CDROMSEEK               0x5316  /* seek msf address */
 
/*
 * This ioctl is only used by the scsi-cd driver.  
   It is for playing audio in logical block addressing mode.
 */

#define CDROMPLAYBLK            0x5317  /* (struct cdrom_blk) */

/*
 * These ioctls are only used in optcd.c
 */

#define CDROMREADALL            0x5318  /* read all 2646 bytes */

/*
 * These ioctls are (now) only in ide-cd.c for controlling
 * drive spindown time.  They should be implemented in the
 * Uniform driver, via generic packet commands, GPCMD_MODE_SELECT_10,
 * GPCMD_MODE_SENSE_10 and the GPMODE_POWER_PAGE...
 *  -Erik
 */

#define CDROMGETSPINDOWN        0x531d
#define CDROMSETSPINDOWN        0x531e

/*
 * These ioctls are implemented through the uniform CD-ROM driver
 * They _will_ be adopted by all CD-ROM drivers, when all the CD-ROM
 * drivers are eventually ported to the uniform CD-ROM driver interface.
 */

#define CDROMCLOSETRAY          0x5319  /* pendant of CDROMEJECT */
#define CDROM_SET_OPTIONS       0x5320  /* Set behavior options */
#define CDROM_CLEAR_OPTIONS     0x5321  /* Clear behavior options */
#define CDROM_SELECT_SPEED      0x5322  /* Set the CD-ROM speed */
#define CDROM_SELECT_DISC       0x5323  /* Select disc (for juke-boxes) */
#define CDROM_MEDIA_CHANGED     0x5325  /* Check is media changed  */
#define CDROM_DRIVE_STATUS      0x5326  /* Get tray position, etc. */
#define CDROM_DISC_STATUS       0x5327  /* Get disc type, etc. */
#define CDROM_CHANGER_NSLOTS    0x5328  /* Get number of slots */
#define CDROM_LOCKDOOR          0x5329  /* lock or unlock door */
#define CDROM_DEBUG             0x5330  /* Turn debug messages on/off */
#define CDROM_GET_CAPABILITY    0x5331  /* get capabilities */

/* Note that scsi/scsi_ioctl.h also uses 0x5382 - 0x5386.
 * Future CDROM ioctls should be kept below 0x537F
 */


/* This ioctl is only used by sbpcd at the moment */
#define CDROMAUDIOBUFSIZ        0x5382  /* set the audio buffer size */
                                        /* conflict with SCSI_IOCTL_GET_IDLUN */

/* DVD-ROM Specific ioctls */
#define DVD_READ_STRUCT         0x5390  /* Read structure */
#define DVD_WRITE_STRUCT        0x5391  /* Write structure */
#define DVD_AUTH                0x5392  /* Authentication */

#define CDROM_SEND_PACKET       0x5393  /* send a packet to the drive */
#define CDROM_NEXT_WRITABLE     0x5394  /* get next writable block */
#define CDROM_LAST_WRITTEN      0x5395  /* get last block written on disc */

/*******************************************************
 * CDROM IOCTL structures
 *******************************************************/


/* Address in MSF format */
struct cdrom_msf0              
{
        __u8    minute;
        __u8    second;
        __u8    frame;
};

/* Address in either MSF or logical format */
union cdrom_addr               
{
        struct cdrom_msf0       msf;
        int                     lba;
};

/* This struct is used by the CDROMPLAYMSF ioctl */
struct cdrom_msf
{
        __u8    cdmsf_min0;     /* start minute */
        __u8    cdmsf_sec0;     /* start second */
        __u8    cdmsf_frame0;   /* start frame */
        __u8    cdmsf_min1;     /* end minute */
        __u8    cdmsf_sec1;     /* end second */
        __u8    cdmsf_frame1;   /* end frame */
};

/* This struct is used by the CDROMPLAYTRKIND ioctl */
struct cdrom_ti
{
        __u8    cdti_trk0;      /* start track */
        __u8    cdti_ind0;      /* start index */
        __u8    cdti_trk1;      /* end track */
        __u8    cdti_ind1;      /* end index */
};

/* This struct is used by the CDROMREADTOCHDR ioctl */
struct cdrom_tochdr    
{
        __u8    cdth_trk0;      /* start track */
        __u8    cdth_trk1;      /* end track */
};

/* This struct is used by the CDROMVOLCTRL and CDROMVOLREAD ioctls */
struct cdrom_volctrl
{
        __u8    channel0;
        __u8    channel1;
        __u8    channel2;
        __u8    channel3;
};

/* This struct is used by the CDROMSUBCHNL ioctl */
struct cdrom_subchnl
{
        __u8    cdsc_format;
        __u8    cdsc_audiostatus;
        __u8    cdsc_adr:       4;
        __u8    cdsc_ctrl:      4;
        __u8    cdsc_trk;
        __u8    cdsc_ind;
        union cdrom_addr cdsc_absaddr;
        union cdrom_addr cdsc_reladdr;
};


/* This struct is used by the CDROMREADTOCENTRY ioctl */
struct cdrom_tocentry
{
        __u8    cdte_track;
        __u8    cdte_adr        :4;
        __u8    cdte_ctrl       :4;
        __u8    cdte_format;
        union cdrom_addr cdte_addr;
        __u8    cdte_datamode;
};

/* This struct is used by the CDROMREADMODE1, and CDROMREADMODE2 ioctls */
struct cdrom_read      
{
        int     cdread_lba;
        char    *cdread_bufaddr;
        int     cdread_buflen;
};

/* This struct is used by the CDROMREADAUDIO ioctl */
struct cdrom_read_audio
{
        union cdrom_addr addr; /* frame address */
        __u8 addr_format;    /* CDROM_LBA or CDROM_MSF */
        int nframes;           /* number of 2352-byte-frames to read at once */
        __u8 *buf;           /* frame buffer (size: nframes*2352 bytes) */
};

/* This struct is used with the CDROMMULTISESSION ioctl */
struct cdrom_multisession
{
        union cdrom_addr addr; /* frame address: start-of-last-session
                                   (not the new "frame 16"!).  Only valid
                                   if the "xa_flag" is true. */

        __u8 xa_flag;        /* 1: "is XA disk" */
        __u8 addr_format;    /* CDROM_LBA or CDROM_MSF */
};

/* This struct is used with the CDROM_GET_MCN ioctl.  
 * Very few audio discs actually have Universal Product Code information,
 * which should just be the Medium Catalog Number on the box.  Also note
 * that the way the codeis written on CD is _not_ uniform across all discs!
 */
 
struct cdrom_mcn
{
  __u8 medium_catalog_number[14]; /* 13 ASCII digits, null-terminated */
};

/* This is used by the CDROMPLAYBLK ioctl */
struct cdrom_blk
{
        unsigned from;
        unsigned short len;
};

#define CDROM_PACKET_SIZE       12

#define CGC_DATA_UNKNOWN        0
#define CGC_DATA_WRITE          1
#define CGC_DATA_READ           2
#define CGC_DATA_NONE           3

/* for CDROM_PACKET_COMMAND ioctl */
struct cdrom_generic_command
{
        unsigned char           cmd[CDROM_PACKET_SIZE];
        unsigned char           *buffer;
        unsigned int            buflen;
        int                     stat;
        struct request_sense    *sense;
        unsigned char           data_direction;
        int                     quiet;
        int                     timeout;
        void                    *reserved[1];
};


/*
 * A CD-ROM physical sector size is 2048, 2052, 2056, 2324, 2332, 2336,
 * 2340, or 2352 bytes long.  

*         Sector types of the standard CD-ROM data formats:
 *
 * format   sector type               user data size (bytes)
 * -----------------------------------------------------------------------------
 *   1     (Red Book)    CD-DA          2352    (CD_FRAMESIZE_RAW)
 *   2     (Yellow Book) Mode1 Form1    2048    (CD_FRAMESIZE)
 *   3     (Yellow Book) Mode1 Form2    2336    (CD_FRAMESIZE_RAW0)
 *   4     (Green Book)  Mode2 Form1    2048    (CD_FRAMESIZE)
 *   5     (Green Book)  Mode2 Form2    2328    (2324+4 spare bytes)
 *
 *
 *       The layout of the standard CD-ROM data formats:
 * -----------------------------------------------------------------------------
 * - audio (red):                  | audio_sample_bytes |
 *                                 |        2352        |
 *
 * - data (yellow, mode1):         | sync - head - data - EDC - zero - ECC |
 *                                 |  12  -   4  - 2048 -  4  -   8  - 276 |
 *
 * - data (yellow, mode2):         | sync - head - data |
 *                                 |  12  -   4  - 2336 |
 *
 * - XA data (green, mode2 form1): | sync - head - sub - data - EDC - ECC |
 *                                 |  12  -   4  -  8  - 2048 -  4  - 276 |
 *
 * - XA data (green, mode2 form2): | sync - head - sub - data - Spare |
 *                                 |  12  -   4  -  8  - 2324 -  4    |
 *
 */


/* Some generally useful CD-ROM information -- mostly based on the above */
#define CD_MINS              74 /* max. minutes per CD, not really a limit */
#define CD_SECS              60 /* seconds per minute */
#define CD_FRAMES            75 /* frames per second */
#define CD_SYNC_SIZE         12 /* 12 sync bytes per raw data frame */
#define CD_MSF_OFFSET       150 /* MSF numbering offset of first frame */
#define CD_CHUNK_SIZE        24 /* lowest-level "data bytes piece" */
#define CD_NUM_OF_CHUNKS     98 /* chunks per frame */
#define CD_FRAMESIZE_SUB     96 /* subchannel data "frame" size */
#define CD_HEAD_SIZE          4 /* header (address) bytes per raw data frame */
#define CD_SUBHEAD_SIZE       8 /* subheader bytes per raw XA data frame */
#define CD_EDC_SIZE           4 /* bytes EDC per most raw data frame types */
#define CD_ZERO_SIZE          8 /* bytes zero per yellow book mode 1 frame */
#define CD_ECC_SIZE         276 /* bytes ECC per most raw data frame types */
#define CD_FRAMESIZE       2048 /* bytes per frame, "cooked" mode */
#define CD_FRAMESIZE_RAW   2352 /* bytes per frame, "raw" mode */
#define CD_FRAMESIZE_RAWER 2646 /* The maximum possible returned bytes */
/* most drives don't deliver everything: */
#define CD_FRAMESIZE_RAW1 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE) /*2340*/
#define CD_FRAMESIZE_RAW0 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE-CD_HEAD_SIZE) /*2336*/

#define CD_XA_HEAD        (CD_HEAD_SIZE+CD_SUBHEAD_SIZE) /* "before data" part of raw XA frame */
#define CD_XA_TAIL        (CD_EDC_SIZE+CD_ECC_SIZE) /* "after data" part of raw XA frame */
#define CD_XA_SYNC_HEAD   (CD_SYNC_SIZE+CD_XA_HEAD) /* sync bytes + header of XA frame */

/* CD-ROM address types (cdrom_tocentry.cdte_format) */
#define CDROM_LBA 0x01 /* "logical block": first frame is #0 */
#define CDROM_MSF 0x02 /* "minute-second-frame": binary, not bcd here! */

/* bit to tell whether track is data or audio (cdrom_tocentry.cdte_ctrl) */
#define CDROM_DATA_TRACK        0x04

/* The leadout track is always 0xAA, regardless of # of tracks on disc */
#define CDROM_LEADOUT           0xAA

/* audio states (from SCSI-2, but seen with other drives, too) */
#define CDROM_AUDIO_INVALID     0x00    /* audio status not supported */
#define CDROM_AUDIO_PLAY        0x11    /* audio play operation in progress */
#define CDROM_AUDIO_PAUSED      0x12    /* audio play operation paused */
#define CDROM_AUDIO_COMPLETED   0x13    /* audio play successfully completed */
#define CDROM_AUDIO_ERROR       0x14    /* audio play stopped due to error */
#define CDROM_AUDIO_NO_STATUS   0x15    /* no current audio status to return */

/* capability flags used with the uniform CD-ROM driver */
#define CDC_CLOSE_TRAY          0x1     /* caddy systems _can't_ close */
#define CDC_OPEN_TRAY           0x2     /* but _can_ eject.  */
#define CDC_LOCK                0x4     /* disable manual eject */
#define CDC_SELECT_SPEED        0x8     /* programmable speed */
#define CDC_SELECT_DISC         0x10    /* select disc from juke-box */
#define CDC_MULTI_SESSION       0x20    /* read sessions>1 */
#define CDC_MCN                 0x40    /* Medium Catalog Number */
#define CDC_MEDIA_CHANGED       0x80    /* media changed */
#define CDC_PLAY_AUDIO          0x100   /* audio functions */
#define CDC_RESET               0x200   /* hard reset device */
#define CDC_IOCTLS              0x400   /* driver has non-standard ioctls */
#define CDC_DRIVE_STATUS        0x800   /* driver implements drive status */
#define CDC_GENERIC_PACKET      0x1000  /* driver implements generic packets */
#define CDC_CD_R                0x2000  /* drive is a CD-R */
#define CDC_CD_RW               0x4000  /* drive is a CD-RW */
#define CDC_DVD                 0x8000  /* drive is a DVD */
#define CDC_DVD_R               0x10000 /* drive can write DVD-R */
#define CDC_DVD_RAM             0x20000 /* drive can write DVD-RAM */
#define CDC_MO_DRIVE            0x40000 /* drive is an MO device */

/* drive status possibilities returned by CDROM_DRIVE_STATUS ioctl */
#define CDS_NO_INFO             0       /* if not implemented */
#define CDS_NO_DISC             1
#define CDS_TRAY_OPEN           2
#define CDS_DRIVE_NOT_READY     3
#define CDS_DISC_OK             4

/* return values for the CDROM_DISC_STATUS ioctl */
/* can also return CDS_NO_[INFO|DISC], from above */
#define CDS_AUDIO               100
#define CDS_DATA_1              101
#define CDS_DATA_2              102
#define CDS_XA_2_1              103
#define CDS_XA_2_2              104
#define CDS_MIXED               105

/* User-configurable behavior options for the uniform CD-ROM driver */
#define CDO_AUTO_CLOSE          0x1     /* close tray on first open() */
#define CDO_AUTO_EJECT          0x2     /* open tray on last release() */
#define CDO_USE_FFLAGS          0x4     /* use O_NONBLOCK information on open */
#define CDO_LOCK                0x8     /* lock tray on open files */
#define CDO_CHECK_TYPE          0x10    /* check type on open for data */

/* Special codes used when specifying changer slots. */
#define CDSL_NONE               ((int) (~0U>>1)-1)
#define CDSL_CURRENT            ((int) (~0U>>1))

/* For partition based multisession access. IDE can handle 64 partitions
 * per drive - SCSI CD-ROM's use minors to differentiate between the
 * various drives, so we can't do multisessions the same way there.
 * Use the -o session=x option to mount on them.
 */

#define CD_PART_MAX             64
#define CD_PART_MASK            (CD_PART_MAX - 1)

/*********************************************************************
 * Generic Packet commands, MMC commands, and such
 *********************************************************************/


 /* The generic packet command opcodes for CD/DVD Logical Units,
 * From Table 57 of the SFF8090 Ver. 3 (Mt. Fuji) draft standard. */

#define GPCMD_BLANK                         0xa1
#define GPCMD_CLOSE_TRACK                   0x5b
#define GPCMD_FLUSH_CACHE                   0x35
#define GPCMD_FORMAT_UNIT                   0x04
#define GPCMD_GET_CONFIGURATION             0x46
#define GPCMD_GET_EVENT_STATUS_NOTIFICATION 0x4a
#define GPCMD_GET_PERFORMANCE               0xac
#define GPCMD_INQUIRY                       0x12
#define GPCMD_LOAD_UNLOAD                   0xa6
#define GPCMD_MECHANISM_STATUS              0xbd
#define GPCMD_MODE_SELECT_10                0x55
#define GPCMD_MODE_SENSE_10                 0x5a
#define GPCMD_PAUSE_RESUME                  0x4b
#define GPCMD_PLAY_AUDIO_10                 0x45
#define GPCMD_PLAY_AUDIO_MSF                0x47
#define GPCMD_PLAY_AUDIO_TI                 0x48
#define GPCMD_PLAY_CD                       0xbc
#define GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL  0x1e
#define GPCMD_READ_10                       0x28
#define GPCMD_READ_12                       0xa8
#define GPCMD_READ_CDVD_CAPACITY            0x25
#define GPCMD_READ_CD                       0xbe
#define GPCMD_READ_CD_MSF                   0xb9
#define GPCMD_READ_DISC_INFO                0x51
#define GPCMD_READ_DVD_STRUCTURE            0xad
#define GPCMD_READ_FORMAT_CAPACITIES        0x23
#define GPCMD_READ_HEADER                   0x44
#define GPCMD_READ_TRACK_RZONE_INFO         0x52
#define GPCMD_READ_SUBCHANNEL               0x42
#define GPCMD_READ_TOC_PMA_ATIP             0x43
#define GPCMD_REPAIR_RZONE_TRACK            0x58
#define GPCMD_REPORT_KEY                    0xa4
#define GPCMD_REQUEST_SENSE                 0x03
#define GPCMD_RESERVE_RZONE_TRACK           0x53
#define GPCMD_SCAN                          0xba
#define GPCMD_SEEK                          0x2b
#define GPCMD_SEND_DVD_STRUCTURE            0xad
#define GPCMD_SEND_EVENT                    0xa2
#define GPCMD_SEND_KEY                      0xa3
#define GPCMD_SEND_OPC                      0x54
#define GPCMD_SET_READ_AHEAD                0xa7
#define GPCMD_SET_STREAMING                 0xb6
#define GPCMD_START_STOP_UNIT               0x1b
#define GPCMD_STOP_PLAY_SCAN                0x4e
#define GPCMD_TEST_UNIT_READY               0x00
#define GPCMD_VERIFY_10                     0x2f
#define GPCMD_WRITE_10                      0x2a
#define GPCMD_WRITE_AND_VERIFY_10           0x2e
/* This is listed as optional in ATAPI 2.6, but is (curiously)
 * missing from Mt. Fuji, Table 57.  It _is_ mentioned in Mt. Fuji
 * Table 377 as an MMC command for SCSi devices though...  Most ATAPI
 * drives support it. */

#define GPCMD_SET_SPEED                     0xbb
/* This seems to be a SCSI specific CD-ROM opcode
 * to play data at track/index */

#define GPCMD_PLAYAUDIO_TI                  0x48
/*
 * From MS Media Status Notification Support Specification. For
 * older drives only.
 */

#define GPCMD_GET_MEDIA_STATUS              0xda

/* Mode page codes for mode sense/set */
#define GPMODE_R_W_ERROR_PAGE           0x01
#define GPMODE_WRITE_PARMS_PAGE         0x05
#define GPMODE_AUDIO_CTL_PAGE           0x0e
#define GPMODE_POWER_PAGE               0x1a
#define GPMODE_FAULT_FAIL_PAGE          0x1c
#define GPMODE_TO_PROTECT_PAGE          0x1d
#define GPMODE_CAPABILITIES_PAGE        0x2a
#define GPMODE_ALL_PAGES                0x3f
/* Not in Mt. Fuji, but in ATAPI 2.6 -- depricated now in favor
 * of MODE_SENSE_POWER_PAGE */

#define GPMODE_CDROM_PAGE               0x0d



/* DVD struct types */
#define DVD_STRUCT_PHYSICAL     0x00
#define DVD_STRUCT_COPYRIGHT    0x01
#define DVD_STRUCT_DISCKEY      0x02
#define DVD_STRUCT_BCA          0x03
#define DVD_STRUCT_MANUFACT     0x04

struct dvd_layer {
        __u8 book_version       : 4;
        __u8 book_type          : 4;
        __u8 min_rate           : 4;
        __u8 disc_size          : 4;
        __u8 layer_type         : 4;
        __u8 track_path         : 1;
        __u8 nlayers            : 2;
        __u8 track_density      : 4;
        __u8 linear_density     : 4;
        __u8 bca                : 1;
        __u32 start_sector;
        __u32 end_sector;
        __u32 end_sector_l0;
};

#define DVD_LAYERS      4

struct dvd_physical {
        __u8 type;
        __u8 layer_num;
        struct dvd_layer layer[DVD_LAYERS];
};

struct dvd_copyright {
        __u8 type;

        __u8 layer_num;
        __u8 cpst;
        __u8 rmi;
};

struct dvd_disckey {
        __u8 type;

        unsigned agid           : 2;
        __u8 value[2048];
};

struct dvd_bca {
        __u8 type;

        int len;
        __u8 value[188];
};

struct dvd_manufact {
        __u8 type;

        __u8 layer_num;
        int len;
        __u8 value[2048];
};

typedef union {
        __u8 type;

        struct dvd_physical     physical;
        struct dvd_copyright    copyright;
        struct dvd_disckey      disckey;
        struct dvd_bca          bca;
        struct dvd_manufact     manufact;
} dvd_struct;

/*
 * DVD authentication ioctl
 */


/* Authentication states */
#define DVD_LU_SEND_AGID        0
#define DVD_HOST_SEND_CHALLENGE 1
#define DVD_LU_SEND_KEY1        2
#define DVD_LU_SEND_CHALLENGE   3
#define DVD_HOST_SEND_KEY2      4

/* Termination states */
#define DVD_AUTH_ESTABLISHED    5
#define DVD_AUTH_FAILURE        6

/* Other functions */
#define DVD_LU_SEND_TITLE_KEY   7
#define DVD_LU_SEND_ASF         8
#define DVD_INVALIDATE_AGID     9
#define DVD_LU_SEND_RPC_STATE   10
#define DVD_HOST_SEND_RPC_STATE 11

/* State data */
typedef __u8 dvd_key[5];                /* 40-bit value, MSB is first elem. */
typedef __u8 dvd_challenge[10]; /* 80-bit value, MSB is first elem. */

struct dvd_lu_send_agid {
        __u8 type;
        unsigned agid           : 2;
};

struct dvd_host_send_challenge {
        __u8 type;
        unsigned agid           : 2;

        dvd_challenge chal;
};

struct dvd_send_key {
        __u8 type;
        unsigned agid           : 2;

        dvd_key key;
};

struct dvd_lu_send_challenge {
        __u8 type;
        unsigned agid           : 2;

        dvd_challenge chal;
};

#define DVD_CPM_NO_COPYRIGHT    0
#define DVD_CPM_COPYRIGHTED     1

#define DVD_CP_SEC_NONE         0
#define DVD_CP_SEC_EXIST        1

#define DVD_CGMS_UNRESTRICTED   0
#define DVD_CGMS_SINGLE         2
#define DVD_CGMS_RESTRICTED     3

struct dvd_lu_send_title_key {
        __u8 type;
        unsigned agid           : 2;

        dvd_key title_key;
        int lba;
        unsigned cpm            : 1;
        unsigned cp_sec         : 1;
        unsigned cgms           : 2;
};

struct dvd_lu_send_asf {
        __u8 type;
        unsigned agid           : 2;

        unsigned asf            : 1;
};

struct dvd_host_send_rpcstate {
        __u8 type;
        __u8 pdrc;
};

struct dvd_lu_send_rpcstate {
        __u8 type               : 2;
        __u8 vra                : 3;
        __u8 ucca               : 3;
        __u8 region_mask;
        __u8 rpc_scheme;
};

typedef union {
        __u8 type;

        struct dvd_lu_send_agid         lsa;
        struct dvd_host_send_challenge  hsc;
        struct dvd_send_key             lsk;
        struct dvd_lu_send_challenge    lsc;
        struct dvd_send_key             hsk;
        struct dvd_lu_send_title_key    lstk;
        struct dvd_lu_send_asf          lsasf;
        struct dvd_host_send_rpcstate   hrpcs;
        struct dvd_lu_send_rpcstate     lrpcs;
} dvd_authinfo;

struct request_sense {
#if defined(__BIG_ENDIAN_BITFIELD)
        __u8 valid              : 1;
        __u8 error_code         : 7;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
        __u8 error_code         : 7;
        __u8 valid              : 1;
#endif
        __u8 segment_number;
#if defined(__BIG_ENDIAN_BITFIELD)
        __u8 reserved1          : 2;
        __u8 ili                : 1;
        __u8 reserved2          : 1;
        __u8 sense_key          : 4;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
        __u8 sense_key          : 4;
        __u8 reserved2          : 1;
        __u8 ili                : 1;
        __u8 reserved1          : 2;
#endif
        __u8 information[4];
        __u8 add_sense_len;
        __u8 command_info[4];
        __u8 asc;
        __u8 ascq;
        __u8 fruc;
        __u8 sks[3];
        __u8 asb[46];
};

#ifdef __KERNEL__
#include <linux/fs.h>           /* not really needed, later.. */
#include <linux/device.h>

struct cdrom_write_settings {
        unsigned char fpacket;          /* fixed/variable packets */
        unsigned long packet_size;      /* write out this number of packets */
        unsigned long nwa;              /* next writeable address */
        unsigned char writeable;        /* cdrom is writeable */
};

/* Uniform cdrom data structures for cdrom.c */
struct cdrom_device_info {
        struct cdrom_device_ops  *ops;  /* link to device_ops */
        struct cdrom_device_info *next; /* next device_info for this major */
        void *handle;                   /* driver-dependent data */
/* specifications */
        int mask;                       /* mask of capability: disables them */
        int speed;                      /* maximum speed for reading data */
        int capacity;                   /* number of discs in jukebox */
/* device-related storage */
        int options             : 30;   /* options flags */
        unsigned mc_flags       : 2;    /* media change buffer flags */
        int use_count;                  /* number of times device opened */
        char name[20];                  /* name of the device type */
/* per-device flags */
        __u8 sanyo_slot         : 2;    /* Sanyo 3 CD changer support */
        __u8 reserved           : 6;    /* not used yet */
        struct cdrom_write_settings write;
};

struct cdrom_device_ops {
/* routines */
        int (*open) (struct cdrom_device_info *, int);
        void (*release) (struct cdrom_device_info *);
        int (*drive_status) (struct cdrom_device_info *, int);
        int (*media_changed) (struct cdrom_device_info *, int);
        int (*tray_move) (struct cdrom_device_info *, int);
        int (*lock_door) (struct cdrom_device_info *, int);
        int (*select_speed) (struct cdrom_device_info *, int);
        int (*select_disc) (struct cdrom_device_info *, int);
        int (*get_last_session) (struct cdrom_device_info *,
                                 struct cdrom_multisession *);
        int (*get_mcn) (struct cdrom_device_info *,
                        struct cdrom_mcn *);
        /* hard reset device */
        int (*reset) (struct cdrom_device_info *);
        /* play stuff */
        int (*audio_ioctl) (struct cdrom_device_info *,unsigned int, void *);
        /* dev-specific */
        int (*dev_ioctl) (struct cdrom_device_info *,
                          unsigned int, unsigned long);
/* driver specifications */
        const int capability;   /* capability flags */
        int n_minors;           /* number of active minor devices */
        /* handle uniform packets for scsi type devices (scsi,atapi) */
        int (*generic_packet) (struct cdrom_device_info *,
                               struct cdrom_generic_command *);
};

/* the general block_device operations structure: */
extern int cdrom_open(struct cdrom_device_info *, struct inode *, struct file *);
extern int cdrom_release(struct cdrom_device_info *, struct file *);
extern int cdrom_ioctl(struct cdrom_device_info *, struct inode *, unsigned, unsigned long);
extern int cdrom_media_changed(struct cdrom_device_info *);

extern int register_cdrom(struct cdrom_device_info *cdi);
extern int unregister_cdrom(struct cdrom_device_info *cdi);

typedef struct {
    int data;
    int audio;
    int cdi;
    int xa;
    long error;
} tracktype;

extern int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written);
extern int cdrom_number_of_slots(struct cdrom_device_info *cdi);
extern int cdrom_mode_select(struct cdrom_device_info *cdi,
                             struct cdrom_generic_command *cgc);
extern int cdrom_mode_sense(struct cdrom_device_info *cdi,
                            struct cdrom_generic_command *cgc,
                            int page_code, int page_control);
extern void init_cdrom_command(struct cdrom_generic_command *cgc,
                               void *buffer, int len, int type);

typedef struct {
        __u16 disc_information_length;
#if defined(__BIG_ENDIAN_BITFIELD)
        __u8 reserved1                  : 3;
        __u8 erasable                   : 1;
        __u8 border_status              : 2;
        __u8 disc_status                : 2;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
        __u8 disc_status                : 2;
        __u8 border_status              : 2;
        __u8 erasable                   : 1;
        __u8 reserved1                  : 3;
#else
#error "Please fix <asm/byteorder.h>"
#endif
        __u8 n_first_track;
        __u8 n_sessions_lsb;
        __u8 first_track_lsb;
        __u8 last_track_lsb;
#if defined(__BIG_ENDIAN_BITFIELD)
        __u8 did_v                      : 1;
        __u8 dbc_v                      : 1;
        __u8 uru                        : 1;
        __u8 reserved2                  : 5;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
        __u8 reserved2                  : 5;
        __u8 uru                        : 1;
        __u8 dbc_v                      : 1;
        __u8 did_v                      : 1;
#endif
        __u8 disc_type;
        __u8 n_sessions_msb;
        __u8 first_track_msb;
        __u8 last_track_msb;
        __u32 disc_id;
        __u32 lead_in;
        __u32 lead_out;
        __u8 disc_bar_code[8];
        __u8 reserved3;
        __u8 n_opc;
} disc_information;

typedef struct {
        __u16 track_information_length;
        __u8 track_lsb;
        __u8 session_lsb;
        __u8 reserved1;
#if defined(__BIG_ENDIAN_BITFIELD)
        __u8 reserved2                  : 2;
        __u8 damage                     : 1;
        __u8 copy                       : 1;
        __u8 track_mode                 : 4;
        __u8 rt                         : 1;
        __u8 blank                      : 1;
        __u8 packet                     : 1;
        __u8 fp                         : 1;
        __u8 data_mode                  : 4;
        __u8 reserved3                  : 6;
        __u8 lra_v                      : 1;
        __u8 nwa_v                      : 1;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
        __u8 track_mode                 : 4;
        __u8 copy                       : 1;
        __u8 damage                     : 1;
        __u8 reserved2                  : 2;
        __u8 data_mode                  : 4;
        __u8 fp                         : 1;
        __u8 packet                     : 1;
        __u8 blank                      : 1;
        __u8 rt                         : 1;
        __u8 nwa_v                      : 1;
        __u8 lra_v                      : 1;
        __u8 reserved3                  : 6;
#endif
        __u32 track_start;
        __u32 next_writable;
        __u32 free_blocks;
        __u32 fixed_packet_size;
        __u32 track_size;
        __u32 last_rec_address;
} track_information;

/* The SCSI spec says there could be 256 slots. */
#define CDROM_MAX_SLOTS 256

struct cdrom_mechstat_header {
#if defined(__BIG_ENDIAN_BITFIELD)
        __u8 fault         : 1;
        __u8 changer_state : 2;
        __u8 curslot       : 5;
        __u8 mech_state    : 3;
        __u8 door_open     : 1;
        __u8 reserved1     : 4;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
        __u8 curslot       : 5;
        __u8 changer_state : 2;
        __u8 fault         : 1;
        __u8 reserved1     : 4;
        __u8 door_open     : 1;
        __u8 mech_state    : 3;
#endif
        __u8     curlba[3];
        __u8     nslots;
        __u16 slot_tablelen;
};

struct cdrom_slot {
#if defined(__BIG_ENDIAN_BITFIELD)
        __u8 disc_present : 1;
        __u8 reserved1    : 6;
        __u8 change       : 1;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
        __u8 change       : 1;
        __u8 reserved1    : 6;
        __u8 disc_present : 1;
#endif
        __u8 reserved2[3];
};

struct cdrom_changer_info {
        struct cdrom_mechstat_header hdr;
        struct cdrom_slot slots[CDROM_MAX_SLOTS];
};

typedef enum {
        mechtype_caddy = 0,
        mechtype_tray  = 1,
        mechtype_popup = 2,
        mechtype_individual_changer = 4,
        mechtype_cartridge_changer  = 5
} mechtype_t;

struct mode_page_header {
        __u16 mode_data_length;
        __u8 medium_type;
        __u8 reserved1;
        __u8 reserved2;
        __u8 reserved3;
        __u16 desc_length;
};

typedef struct {
#if defined(__BIG_ENDIAN_BITFIELD)
        __u8 ps                 : 1;
        __u8 reserved1          : 1;
        __u8 page_code          : 6;
        __u8 page_length;
        __u8 reserved2          : 1;
        __u8 bufe               : 1;
        __u8 ls_v               : 1;
        __u8 test_write         : 1;
        __u8 write_type         : 4;
        __u8 multi_session      : 2; /* or border, DVD */
        __u8 fp                 : 1;
        __u8 copy               : 1;
        __u8 track_mode         : 4;
        __u8 reserved3          : 4;
        __u8 data_block_type    : 4;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
        __u8 page_code          : 6;
        __u8 reserved1          : 1;
        __u8 ps                 : 1;
        __u8 page_length;
        __u8 write_type         : 4;
        __u8 test_write         : 1;
        __u8 ls_v               : 1;
        __u8 bufe               : 1;
        __u8 reserved2          : 1;
        __u8 track_mode         : 4;
        __u8 copy               : 1;
        __u8 fp                 : 1;
        __u8 multi_session      : 2; /* or border, DVD */
        __u8 data_block_type    : 4;
        __u8 reserved3          : 4;
#endif
        __u8 link_size;
        __u8 reserved4;
#if defined(__BIG_ENDIAN_BITFIELD)
        __u8 reserved5          : 2;
        __u8 app_code           : 6;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
        __u8 app_code           : 6;
        __u8 reserved5          : 2;
#endif
        __u8 session_format;
        __u8 reserved6;
        __u32 packet_size;
        __u16 audio_pause;
        __u8 mcn[16];
        __u8 isrc[16];
        __u8 subhdr0;
        __u8 subhdr1;
        __u8 subhdr2;
        __u8 subhdr3;
} __attribute__((packed)) write_param_page;

struct modesel_head
{
        __u8    reserved1;
        __u8    medium;
        __u8    reserved2;
        __u8    block_desc_length;
        __u8    density;
        __u8    number_of_blocks_hi;
        __u8    number_of_blocks_med;
        __u8    number_of_blocks_lo;
        __u8    reserved3;
        __u8    block_length_hi;
        __u8    block_length_med;
        __u8    block_length_lo;
};

typedef struct {
        __u16 report_key_length;
        __u8 reserved1;
        __u8 reserved2;
#if defined(__BIG_ENDIAN_BITFIELD)
        __u8 type_code                  : 2;
        __u8 vra                        : 3;
        __u8 ucca                       : 3;
#elif defined(__LITTLE_ENDIAN_BITFIELD)
        __u8 ucca                       : 3;
        __u8 vra                        : 3;
        __u8 type_code                  : 2;
#endif
        __u8 region_mask;
        __u8 rpc_scheme;
        __u8 reserved3;
} rpc_state_t;

#endif  /* End of kernel only stuff */

#endif  /* _LINUX_CDROM_H */