sys/scsi/scsi_cd.h

/*
 * Written by Julian Elischer (julian@tfs.com)
 * for TRW Financial Systems.
 *
 * TRW Financial Systems, in accordance with their agreement with Carnegie
 * Mellon University, makes this software available to CMU to distribute
 * or use in any manner that they see fit as long as this message is kept with
 * the software. For this reason TFS also grants any other persons or
 * organisations permission to use or modify this software.
 *
 * TFS supplies this software to be publicly redistributed
 * on the understanding that TFS is not responsible for the correct
 * functioning of this software in any circumstances.
 *
 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
 *
 *      $Id$
 */

/*
 *      Define two bits always in the same place in byte 2 (flag byte)
 */
#define CD_RELADDR      0x01
#define CD_MSF          0x02

/*
 * SCSI command format
 */

struct scsi_read_capacity_cd
{
        u_char  op_code;
        u_char  byte2;
        u_char  addr_3; /* Most Significant */
        u_char  addr_2;
        u_char  addr_1;
        u_char  addr_0; /* Least Significant */
        u_char  unused[3];
        u_char  control;
};

struct scsi_pause
{
        u_char  op_code;
        u_char  byte2;
        u_char  unused[6];
        u_char  resume;
        u_char  control;
};
#define PA_PAUSE        1
#define PA_RESUME       0

struct scsi_play_msf
{
        u_char  op_code;
        u_char  byte2;
        u_char  unused;
        u_char  start_m;
        u_char  start_s;
        u_char  start_f;
        u_char  end_m;
        u_char  end_s;
        u_char  end_f;
        u_char  control;
};

struct scsi_play_track
{
        u_char  op_code;
        u_char  byte2;
        u_char  unused[2];
        u_char  start_track;
        u_char  start_index;
        u_char  unused1;
        u_char  end_track;
        u_char  end_index;
        u_char  control;
};

struct scsi_play
{
        u_char  op_code;
        u_char  byte2;
        u_char  blk_addr[4];
        u_char  unused;
        u_char  xfer_len[2];
        u_char  control;
};

struct scsi_play_big
{
        u_char  op_code;
        u_char  byte2;  /* same as above */
        u_char  blk_addr[4];
        u_char  xfer_len[4];
        u_char  unused;
        u_char  control;
};

struct scsi_play_rel_big
{
        u_char  op_code;
        u_char  byte2;  /* same as above */
        u_char  blk_addr[4];
        u_char  xfer_len[4];
        u_char  track;
        u_char  control;
};

struct scsi_read_header
{
        u_char  op_code;
        u_char  byte2;
        u_char  blk_addr[4];
        u_char  unused;
        u_char  data_len[2];
        u_char  control;
};

struct scsi_read_subchannel
{
        u_char  op_code;
        u_char  byte2;
        u_char  byte3;
#define SRS_SUBQ        0x40
        u_char  subchan_format;
        u_char  unused[2];
        u_char  track;
        u_char  data_len[2];
        u_char  control;
};

struct scsi_read_toc
{
        u_char  op_code;
        u_char  byte2;
        u_char  unused[4];
        u_char  from_track;
        u_char  data_len[2];
        u_char  control;
};
;

struct scsi_read_cd_capacity
{
        u_char  op_code;
        u_char  byte2;
        u_char  addr_3; /* Most Significant */
        u_char  addr_2;
        u_char  addr_1;
        u_char  addr_0; /* Least Significant */
        u_char  unused[3];
        u_char  control;
};

/*
 * Opcodes
 */

#define READ_CD_CAPACITY        0x25    /* slightly different from disk */
#define READ_SUBCHANNEL         0x42    /* cdrom read Subchannel */
#define READ_TOC                0x43    /* cdrom read TOC */
#define READ_HEADER             0x44    /* cdrom read header */
#define PLAY                    0x45    /* cdrom play  'play audio' mode */
#define PLAY_MSF                0x47    /* cdrom play Min,Sec,Frames mode */
#define PLAY_TRACK              0x48    /* cdrom play track/index mode */
#define PLAY_TRACK_REL          0x49    /* cdrom play track/index mode */
#define PAUSE                   0x4b    /* cdrom pause in 'play audio' mode */
#define PLAY_BIG                0xa5    /* cdrom pause in 'play audio' mode */
#define PLAY_TRACK_REL_BIG      0xa9    /* cdrom play track/index mode */


struct scsi_read_cd_cap_data
{
        u_char  addr_3; /* Most significant */
        u_char  addr_2;
        u_char  addr_1;
        u_char  addr_0; /* Least significant */
        u_char  length_3;       /* Most significant */
        u_char  length_2;
        u_char  length_1;
        u_char  length_0;       /* Least significant */
};

union   cd_pages
{
        struct  audio_page
        {
                u_char  page_code;
#define CD_PAGE_CODE    0x3F
#define AUDIO_PAGE      0x0e
#define CD_PAGE_PS      0x80
                u_char  param_len;
                u_char  flags;
#define         CD_PA_SOTC      0x02
#define         CD_PA_IMMED     0x04
                u_char  unused[2];
                u_char  format_lba;
#define         CD_PA_FORMAT_LBA        0x0F
#define         CD_PA_APR_VALID 0x80
                u_char  lb_per_sec[2];
                struct  port_control
                {
                        u_char  channels;
#define CHANNEL 0x0F
#define CHANNEL_0 1
#define CHANNEL_1 2
#define CHANNEL_2 4
#define CHANNEL_3 8
#define LEFT_CHANNEL    CHANNEL_0
#define RIGHT_CHANNEL   CHANNEL_1
                        u_char  volume;
                } port[4];
#define LEFT_PORT       0
#define RIGHT_PORT      1
        }audio;
};

struct cd_mode_data
{
        struct scsi_mode_header header;
        struct blk_desc blk_desc;
        union cd_pages page;
};