path: root/libk3bdevice/k3bmmc.h

/* 
 *
 * $Id: k3bmmc.h 630384 2007-02-05 09:33:17Z mlaurent $
 * Copyright (C) 2003-2007 Sebastian Trueg <trueg@k3b.org>
 *
 * This file is part of the K3b project.
 * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * See the file "COPYING" for the exact licensing terms.
 */


#ifndef _K3B_MMC_H_
#define _K3B_MMC_H_

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif


namespace K3bDevice 
{
  /* 
   * struct disc_info taken from cdrwtool.h
   *
   *
   * disc status (status):
   *     00b - empty disc
   *     01b - incomplete disc (appendable)
   *     10b - Complete disc
   *     11b - Others
   *
   * State of last session (border)
   *     00b - Empty session
   *     01b - Incomplete session
   *     10b - Reseverd
   *     11b - Complete session (only possible when disc status is complete)
   */

  typedef struct disc_info {
    TQ_UINT16 length;
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char reserved1 : 3;
    unsigned char erasable  : 1;
    unsigned char border    : 2;
    unsigned char status    : 2;
#else
    unsigned char status    : 2;
    unsigned char border    : 2;
    unsigned char erasable  : 1;
    unsigned char reserved1 : 3;
#endif
    unsigned char n_first_track;
    unsigned char n_sessions_l;
    unsigned char first_track_l;
    unsigned char last_track_l;
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char did_v     : 1;
    unsigned char dbc_v     : 1;
    unsigned char uru       : 1;
    unsigned char reserved2 : 2;
    unsigned char dbit      : 1;
    unsigned char bg_f_status : 1;
#else
    unsigned char bg_f_status : 1;
    unsigned char dbit      : 1;
    unsigned char reserved2 : 2;
    unsigned char uru       : 1;
    unsigned char dbc_v     : 1;
    unsigned char did_v     : 1;
#endif

    /*
     * disc type
     *    00h - CD-DA of CDROM
     *    10h - CD-I
     *    20h - CD-ROM XA
     *    FFh - Undefined
     *    All other values are reserved
     */
    unsigned char disc_type;
    unsigned char n_sessions_m;
    unsigned char first_track_m;
    unsigned char last_track_m;
    TQ_UINT32 disc_id;

    /*
     * Last session lead-in start time
     * if the disc is complete this shall be FF/FF/FF
     */
    unsigned char lead_in_r;
    unsigned char lead_in_m;
    unsigned char lead_in_s;
    unsigned char lead_in_f;

    /*
     * Last possible start time for start of lead-in
     * if the disc is complete this shall be FF/FF/FF
     */
    unsigned char lead_out_r;
    unsigned char lead_out_m;
    unsigned char lead_out_s;
    unsigned char lead_out_f;

    unsigned char disc_bar_code[8];

    //
    // We need to make sure the structure has a proper size
    // I think it needs to be a power of 2.
    // With ide-scsi there is no problem. But without the
    // GPCMD_READ_DISC_INFO command failes if the size is 34
    //

/*     unsigned char reserved3; */
/*     unsigned char opc_entries; */
  } disc_info_t;



  /* 
   * struct track_info taken from cdrwtool.h
   */
  typedef struct track_info {
    unsigned char data_length[2];
    unsigned char track_number_l;
    unsigned char session_number_l;
    unsigned char reserved1;
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char reserved2       : 2;
    unsigned char damage          : 1;
    unsigned char copy            : 1;
    unsigned char track_mode      : 4;
    unsigned char rt              : 1;
    unsigned char blank           : 1;
    unsigned char packet          : 1;
    unsigned char fp              : 1;
    unsigned char data_mode       : 4;
    unsigned char reserved3       : 6;
    unsigned char lra_v           : 1;
    unsigned char nwa_v           : 1;
#else
    unsigned char track_mode      : 4;
    unsigned char copy            : 1;
    unsigned char damage          : 1;
    unsigned char reserved2       : 2;
    unsigned char data_mode       : 4;
    unsigned char fp              : 1;
    unsigned char packet          : 1;
    unsigned char blank           : 1;
    unsigned char rt              : 1;
    unsigned char nwa_v           : 1;
    unsigned char lra_v           : 1;
    unsigned char reserved3       : 6;
#endif
    unsigned char track_start[4];
    unsigned char next_writable[4];
    unsigned char free_blocks[4];
    unsigned char packet_size[4];
    unsigned char track_size[4];
    unsigned char last_recorded[4];
    unsigned char track_number_m;
    unsigned char session_number_m;
    unsigned char reserved4;
    unsigned char reserved5;
    unsigned char read_compatibility[4];
  } track_info_t;


  /*
   * Use this with the GPCMD_READ_TOC_PMA_ATIP command
   * where format is set to 2 (Full TOC)
   */
  struct toc_raw_track_descriptor {
    unsigned char session_number;
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char adr     : 4;
    unsigned char control : 4;
#else
    unsigned char control : 4;
    unsigned char adr     : 4;
#endif
    unsigned char tno;
    unsigned char point;
    unsigned char min;
    unsigned char sec;
    unsigned char frame;
    unsigned char zero;
    unsigned char p_min;
    unsigned char p_sec;
    unsigned char p_frame;
  };


#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
  struct cd_wr_speed_performance {
    unsigned char res0;                   /* Reserved                          */
    unsigned char res_1_27        : 6;    /* Reserved                          */
    unsigned char rot_ctl_sel     : 2;    /* Rotational control selected       */
    unsigned char wr_speed_supp[2];       /* Supported write speed             */
  };
#else
  struct cd_wr_speed_performance {
    unsigned char res0;                   /* Reserved                          */
    unsigned char rot_ctl_sel     : 2;    /* Rotational control selected       */
    unsigned char res_1_27        : 6;    /* Reserved                          */
    unsigned char wr_speed_supp[2];       /* Supported write speed             */
  };
#endif


  /**
   * Based on the cdrecord struct cd_mode_page_2A
   * MM Capabilities and Mechanical tqStatus Page
   */
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN

  struct mm_cap_page_2A {
    unsigned char PS               : 1;
    unsigned char res_1            : 1;
    unsigned char page_code        : 6;
    unsigned char page_len;             /* 0x14 = 20 Bytes (MMC) */
                                        /* 0x18 = 24 Bytes (MMC-2) */
                                        /* 0x1C >= 28 Bytes (MMC-3) */
    unsigned char res_2_67         : 2; /* Reserved        */
    unsigned char dvd_ram_read     : 1; /* Reads DVD-RAM media       */
    unsigned char dvd_r_read       : 1; /* Reads DVD-R media       */
    unsigned char dvd_rom_read     : 1; /* Reads DVD ROM media       */
    unsigned char method2          : 1; /* Reads fixed packet method2 media  */
    unsigned char cd_rw_read       : 1; /* Reads CD-RW media       */
    unsigned char cd_r_read        : 1; /* Reads CD-R  media       */
    unsigned char res_3_67         : 2; /* Reserved        */
    unsigned char dvd_ram_write    : 1; /* Supports writing DVD-RAM media    */
    unsigned char dvd_r_write      : 1; /* Supports writing DVD-R media      */
    unsigned char res_3_3          : 1; /* Reserved        */
    unsigned char test_write       : 1; /* Supports emulation write      */
    unsigned char cd_rw_write      : 1; /* Supports writing CD-RW media      */
    unsigned char cd_r_write       : 1; /* Supports writing CD-R  media      */
    unsigned char BUF              : 1; /* Supports Buffer under. free rec.  */
    unsigned char multi_session    : 1; /* Reads multi-session media      */
    unsigned char mode_2_form_2    : 1; /* Reads Mode-2 form 2 media      */
    unsigned char mode_2_form_1    : 1; /* Reads Mode-2 form 1 media (XA)    */
    unsigned char digital_port_1   : 1; /* Supports digital output on port 1 */
    unsigned char digital_port_2   : 1; /* Supports digital output on port 2 */
    unsigned char composite        : 1; /* Deliveres composite A/V stream    */
    unsigned char audio_play       : 1; /* Supports Audio play operation     */
    unsigned char read_bar_code    : 1; /* Supports reading bar codes      */
    unsigned char UPC              : 1; /* Reads media catalog number (UPC)  */
    unsigned char ISRC             : 1; /* Reads ISRC information      */
    unsigned char c2_pointers      : 1; /* Supports C2 error pointers      */
    unsigned char rw_deint_corr    : 1; /* Reads de-interleved R-W sub chan  */
    unsigned char rw_supported     : 1; /* Reads R-W sub channel information */
    unsigned char cd_da_accurate   : 1; /* READ CD data stream is accurate   */
    unsigned char cd_da_supported  : 1; /* Reads audio data with READ CD cmd */
    unsigned char loading_type     : 3; /* Loading mechanism type      */
    unsigned char res_6_4          : 1; /* Reserved        */
    unsigned char eject            : 1; /* Ejects disc/cartr with STOP LoEj  */
    unsigned char prevent_jumper   : 1; /* State of prev/allow jumper 0=pres */
    unsigned char lock_state       : 1; /* Lock state 0=unlocked 1=locked    */
    unsigned char lock             : 1; /* PREVENT/ALLOW may lock media      */
    unsigned char res_7            : 2; /* Reserved        */
    unsigned char rw_in_lead_in    : 1; /* Reads raw R-W subcode from lead in */
    unsigned char side_change      : 1; /* Side change capable       */
    unsigned char sw_slot_sel      : 1; /* Load empty slot in changer      */
    unsigned char disk_present_rep : 1; /* Changer supports disk present rep */
    unsigned char sep_chan_mute    : 1; /* Mute controls each channel separat*/
    unsigned char sep_chan_vol     : 1; /* Vol controls each channel separat */
    unsigned char max_read_speed[2];    /* Max. read speed in KB/s      */
                                        /* obsolete in MMC-4 */
    unsigned char num_vol_levels[2];    /* # of supported volume levels      */
    unsigned char buffer_size[2];       /* Buffer size for the data in KB    */
    unsigned char cur_read_speed[2];    /* Current read speed in KB/s      */
                                        /* obsolete in MMC-4 */
    unsigned char res_16;               /* Reserved        */
    unsigned char res_17           : 2; /* Reserved        */
    unsigned char length           : 2; /* 0=32BCKs 1=16BCKs 2=24BCKs 3=24I2c*/
    unsigned char LSBF             : 1; /* Set: LSB first Clear: MSB first   */
    unsigned char RCK              : 1; /* Set: HIGH high LRCK=left channel  */
    unsigned char BCK              : 1; /* Data valid on falling edge of BCK */
    unsigned char res_17_0         : 1; /* Reserved        */
    unsigned char max_write_speed[2];   /* Max. write speed supported in KB/s*/
                                        /* obsolete in MMC-4 */
    unsigned char cur_write_speed[2];   /* Current write speed in KB/s      */
                                        /* obsolete in MMC-4 */

    /* Byte 22 ... Only in MMC-2      */
    unsigned char copy_man_rev[2];      /* Copy management revision supported*/
    unsigned char res_24;               /* Reserved        */
    unsigned char res_25;               /* Reserved        */

    /* Byte 26 ... Only in MMC-3      */
    unsigned char res_26;               /* Reserved        */
    unsigned char res_27_27        : 6; /* Reserved        */
    unsigned char rot_ctl_sel      : 2; /* Rotational control selected      */
    unsigned char v3_cur_write_speed[2]; /* Current write speed in KB/s      */
    unsigned char num_wr_speed_des[2];  /* # of wr speed perf descr. tables  */
    struct cd_wr_speed_performance
    wr_speed_des[1];                    /* wr speed performance descriptor   */
                                        /* Actually more (num_wr_speed_des)  */
  };

#else  // LITTLE_ENDIAN

  struct mm_cap_page_2A {
    unsigned char page_code        : 6;
    unsigned char res_1            : 1;
    unsigned char PS               : 1;
    unsigned char page_len;             /* 0x14 = 20 Bytes (MMC) */
                                        /* 0x18 = 24 Bytes (MMC-2) */
                                        /* 0x1C >= 28 Bytes (MMC-3) */
    unsigned char cd_r_read        : 1; /* Reads CD-R  media       */
    unsigned char cd_rw_read       : 1; /* Reads CD-RW media       */
    unsigned char method2          : 1; /* Reads fixed packet method2 media  */
    unsigned char dvd_rom_read     : 1; /* Reads DVD ROM media       */
    unsigned char dvd_r_read       : 1; /* Reads DVD-R media       */
    unsigned char dvd_ram_read     : 1; /* Reads DVD-RAM media       */
    unsigned char res_2_67         : 2; /* Reserved        */
    unsigned char cd_r_write       : 1; /* Supports writing CD-R  media      */
    unsigned char cd_rw_write      : 1; /* Supports writing CD-RW media      */
    unsigned char test_write       : 1; /* Supports emulation write      */
    unsigned char res_3_3          : 1; /* Reserved        */
    unsigned char dvd_r_write      : 1; /* Supports writing DVD-R media      */
    unsigned char dvd_ram_write    : 1; /* Supports writing DVD-RAM media    */
    unsigned char res_3_67         : 2; /* Reserved        */
    unsigned char audio_play       : 1; /* Supports Audio play operation     */
    unsigned char composite        : 1; /* Deliveres composite A/V stream    */
    unsigned char digital_port_2   : 1; /* Supports digital output on port 2 */
    unsigned char digital_port_1   : 1; /* Supports digital output on port 1 */
    unsigned char mode_2_form_1    : 1; /* Reads Mode-2 form 1 media (XA)    */
    unsigned char mode_2_form_2    : 1; /* Reads Mode-2 form 2 media      */
    unsigned char multi_session    : 1; /* Reads multi-session media      */
    unsigned char BUF              : 1; /* Supports Buffer under. free rec.  */
    unsigned char cd_da_supported  : 1; /* Reads audio data with READ CD cmd */
    unsigned char cd_da_accurate   : 1; /* READ CD data stream is accurate   */
    unsigned char rw_supported     : 1; /* Reads R-W sub channel information */
    unsigned char rw_deint_corr    : 1; /* Reads de-interleved R-W sub chan  */
    unsigned char c2_pointers      : 1; /* Supports C2 error pointers      */
    unsigned char ISRC             : 1; /* Reads ISRC information      */
    unsigned char UPC              : 1; /* Reads media catalog number (UPC)  */
    unsigned char read_bar_code    : 1; /* Supports reading bar codes      */
    unsigned char lock             : 1; /* PREVENT/ALLOW may lock media      */
    unsigned char lock_state       : 1; /* Lock state 0=unlocked 1=locked    */
    unsigned char prevent_jumper   : 1; /* State of prev/allow jumper 0=pres */
    unsigned char eject            : 1; /* Ejects disc/cartr with STOP LoEj  */
    unsigned char res_6_4          : 1; /* Reserved        */
    unsigned char loading_type     : 3; /* Loading mechanism type      */
    unsigned char sep_chan_vol     : 1; /* Vol controls each channel separat */
    unsigned char sep_chan_mute    : 1; /* Mute controls each channel separat*/
    unsigned char disk_present_rep : 1; /* Changer supports disk present rep */
    unsigned char sw_slot_sel      : 1; /* Load empty slot in changer      */
    unsigned char side_change      : 1; /* Side change capable       */
    unsigned char rw_in_lead_in    : 1; /* Reads raw R-W subcode from lead in */
    unsigned char res_7            : 2; /* Reserved        */
    unsigned char max_read_speed[2];    /* Max. read speed in KB/s      */
                                        /* obsolete in MMC-4 */
    unsigned char num_vol_levels[2];    /* # of supported volume levels      */
    unsigned char buffer_size[2];       /* Buffer size for the data in KB    */
    unsigned char cur_read_speed[2];    /* Current read speed in KB/s      */
                                        /* obsolete in MMC-4 */
    unsigned char res_16;               /* Reserved        */
    unsigned char res_17_0         : 1; /* Reserved        */
    unsigned char BCK              : 1; /* Data valid on falling edge of BCK */
    unsigned char RCK              : 1; /* Set: HIGH high LRCK=left channel  */
    unsigned char LSBF             : 1; /* Set: LSB first Clear: MSB first   */
    unsigned char length           : 2; /* 0=32BCKs 1=16BCKs 2=24BCKs 3=24I2c*/
    unsigned char res_17           : 2; /* Reserved        */
    unsigned char max_write_speed[2];   /* Max. write speed supported in KB/s*/
                                        /* obsolete in MMC-4 */
    unsigned char cur_write_speed[2];   /* Current write speed in KB/s      */
                                        /* obsolete in MMC-4 */

    /* Byte 22 ... Only in MMC-2      */
    unsigned char copy_man_rev[2];      /* Copy management revision supported*/
    unsigned char res_24;               /* Reserved        */
    unsigned char res_25;               /* Reserved        */

    /* Byte 26 ... Only in MMC-3      */
    unsigned char res_26;               /* Reserved        */
    unsigned char rot_ctl_sel      : 2; /* Rotational control selected      */
    unsigned char res_27_27        : 6; /* Reserved        */
    unsigned char v3_cur_write_speed[2]; /* Current write speed in KB/s      */
    unsigned char num_wr_speed_des[2];  /* # of wr speed perf descr. tables  */
    struct cd_wr_speed_performance
    wr_speed_des[1];                    /* wr speed performance descriptor   */
                                        /* Actually more (num_wr_speed_des)  */
  };
#endif

  /**
   * Based on the cdrecord struct cd_mode_page_05
   * Write Parameters Mode Page
   */
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
  struct wr_param_page_05 {                /* write parameters */
    unsigned char PS               : 1;
    unsigned char res_1            : 1;
    unsigned char page_code        : 6;
    unsigned char page_len;                /* 0x32 = 50 Bytes */
    unsigned char res_2_7          : 1;
    unsigned char BUFE             : 1;    /* Enable Bufunderrun free rec.      */
    unsigned char LS_V             : 1;    /* Link size valid                   */
    unsigned char test_write       : 1;    /* Do not actually write data        */
    unsigned char write_type       : 4;    /* Session write type (PACKET/TAO...)*/
    unsigned char multi_session    : 2;    /* Multi session write type          */
    unsigned char fp               : 1;    /* Fixed packed (if in packet mode)  */
    unsigned char copy             : 1;    /* 1st higher gen of copy prot track */
    unsigned char track_mode       : 4;    /* Track mode (Q-sub control nibble) */
    unsigned char res_4            : 4;    /* Reserved                          */
    unsigned char dbtype           : 4;    /* Data block type                   */
    unsigned char link_size;               /* Link Size (default is 7)          */
    unsigned char res_6;                   /* Reserved                          */
    unsigned char res_7            : 2;    /* Reserved                          */
    unsigned char host_appl_code   : 6;    /* Host application code of disk     */
    unsigned char session_format;          /* Session format (DA/CDI/XA)        */
    unsigned char res_9;                   /* Reserved                          */
    unsigned char packet_size[4];          /* # of user datablocks/fixed packet */
    unsigned char audio_pause_len[2];      /* # of blocks where index is zero   */
    unsigned char media_cat_number[16];    /* Media catalog Number (MCN)        */
    unsigned char ISRC[14];                /* ISRC for this track               */
    unsigned char sub_header[4];
    unsigned char vendor_uniq[4];
  };

#else // __LITTLE_ENDIAN
  struct wr_param_page_05 {		/* write parameters */
    unsigned char page_code        : 6;
    unsigned char res_1            : 1;
    unsigned char PS               : 1;
    unsigned char p_len;		/* 0x32 = 50 Bytes */
    unsigned char write_type	   : 4;	/* Session write type (PACKET/TAO...)*/
    unsigned char test_write	   : 1;	/* Do not actually write data	     */
    unsigned char LS_V		   : 1;	/* Link size valid		     */
    unsigned char BUFE		   : 1;	/* Enable Bufunderrun free rec.	     */
    unsigned char res_2_7	   : 1;
    unsigned char track_mode	   : 4;	/* Track mode (Q-sub control nibble) */
    unsigned char copy		   : 1;	/* 1st higher gen of copy prot track ~*/
    unsigned char fp		   : 1;	/* Fixed packed (if in packet mode)  */
    unsigned char multi_session	   : 2;	/* Multi session write type	     */
    unsigned char dbtype	   : 4;	/* Data block type		     */
    unsigned char res_4		   : 4;	/* Reserved			     */
    unsigned char link_size;		/* Link Size (default is 7)	     */
    unsigned char res_6;	       	/* Reserved			     */
    unsigned char host_appl_code   : 6;	/* Host application code of disk     */
    unsigned char res_7		   : 2;	/* Reserved			     */
    unsigned char session_format;	/* Session format (DA/CDI/XA)	     */
    unsigned char res_9;		/* Reserved			     */
    unsigned char packet_size[4];	/* # of user datablocks/fixed packet */
    unsigned char audio_pause_len[2];	/* # of blocks where index is zero   */
    unsigned char media_cat_number[16];	/* Media catalog Number (MCN)	     */
    unsigned char ISRC[14];		/* ISRC for this track		     */
    unsigned char sub_header[4];
    unsigned char vendor_uniq[4];
  };
#endif


  struct toc_track_descriptor {
    unsigned char res1;
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char adr     : 4;
    unsigned char control : 4;
#else
    unsigned char control : 4;
    unsigned char adr     : 4;
#endif
    unsigned char track_no;
    unsigned char res2;
    unsigned char start_adr[4];
  };


  struct atip_descriptor {
    unsigned char dataLength[2];
    unsigned char res1;
    unsigned char res2;
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char ind_wr_power : 4;  // indicated writing power
    unsigned char ddcd         : 1;  // DDCD
    unsigned char ref_speed    : 3;  // reference Speed
    unsigned char zero         : 1;  // 0
    unsigned char uru          : 1;  // Uru
    unsigned char res3         : 6;
    unsigned char one          : 1;  // 1
    unsigned char disc_type    : 1;  // Disc Type
    unsigned char disc_subtype : 3;  // Disc Sub-Type
    unsigned char a1_valid     : 1;
    unsigned char a2_valid     : 1;
    unsigned char a3_valid     : 1;
#else
    unsigned char ref_speed    : 3;  // reference Speed
    unsigned char ddcd         : 1;  // DDCD
    unsigned char ind_wr_power : 4;  // indicated writing power
    unsigned char res3         : 6;
    unsigned char uru          : 1;  // Uru
    unsigned char zero         : 1;  // 0
    unsigned char a3_valid     : 1;
    unsigned char a2_valid     : 1;
    unsigned char a1_valid     : 1;
    unsigned char disc_subtype : 3;  // Disc Sub-Type
    unsigned char disc_type    : 1;  // Disc Type
    unsigned char one          : 1;  // 1
#endif
    unsigned char res4;
    unsigned char lead_in_m;
    unsigned char lead_in_s;
    unsigned char lead_in_f;
    unsigned char res5;
    unsigned char lead_out_m;
    unsigned char lead_out_s;
    unsigned char lead_out_f;
    unsigned char res6;
    unsigned char a1[3];
    unsigned char res7;
    unsigned char a2[3];
    unsigned char res8;
    unsigned char a3[3];
    unsigned char res9;
    unsigned char s4[3];
    unsigned char res10;
  };


  struct mechanism_status_header {
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char fault         : 1;
    unsigned char changer_state : 2;
    unsigned char slot_low      : 5;
#else
    unsigned char slot_low      : 5;
    unsigned char changer_state : 2;
    unsigned char fault         : 1;
#endif
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char mech_state    : 3;
    unsigned char door_open     : 1;
    unsigned char res1          : 1;
    unsigned char slot_high     : 3;
#else
    unsigned char slot_high     : 3;
    unsigned char res1          : 1;
    unsigned char door_open     : 1;
    unsigned char mech_state    : 3;
#endif
    unsigned char current_lba[3];
    unsigned char num_slots;
    unsigned char slot_len[2];
  };

  struct mechanism_status_slot {
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char disc_present  : 1;
    unsigned char res1          : 6;
    unsigned char change        : 1;
#else
    unsigned char change        : 1;
    unsigned char res1          : 6;
    unsigned char disc_present  : 1;
#endif
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char res2          : 6;
    unsigned char cwp_v         : 1;
    unsigned char cwp           : 1;
#else
    unsigned char cwp           : 1;
    unsigned char cwp_v         : 1;
    unsigned char res2          : 6;
#endif
    unsigned char res3;
    unsigned char res4;
  };


  struct inquiry {
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char p_qualifier   : 3;
    unsigned char p_device_type : 5;
    unsigned char rmb           : 1;
    unsigned char reserved1     : 7;
#else
    unsigned char p_device_type : 5;
    unsigned char p_qualifier   : 3;
    unsigned char reserved1     : 7;
    unsigned char rmb           : 1;
#endif
    unsigned char version;
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char interface_dep : 4;
    unsigned char data_format   : 4;
#else
    unsigned char data_format   : 4;
    unsigned char interface_dep : 4;
#endif
    unsigned char add_length;
    unsigned char reserved2;
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char bque          : 1;
    unsigned char enc_serv      : 1;
    unsigned char vs1           : 1;
    unsigned char multi_p       : 1;
    unsigned char m_chngr       : 1;
    unsigned char reserved3     : 1;
    unsigned char reserved4     : 1;
    unsigned char addr_16       : 1;
    unsigned char rel_adr       : 1;
    unsigned char reserved5     : 1;
    unsigned char w_bus_16      : 1;
    unsigned char sync          : 1;
    unsigned char linked        : 1;
    unsigned char reserved6     : 1;
    unsigned char cmd_que       : 1;
    unsigned char vs2           : 1;
#else
    unsigned char addr_16       : 1;
    unsigned char reserved4     : 1;
    unsigned char reserved3     : 1;
    unsigned char m_chngr       : 1;
    unsigned char multi_p       : 1;
    unsigned char vs1           : 1;
    unsigned char enc_serv      : 1;
    unsigned char bque          : 1;
    unsigned char vs2           : 1;
    unsigned char cmd_que       : 1;
    unsigned char reserved6     : 1;
    unsigned char linked        : 1;
    unsigned char sync          : 1;
    unsigned char w_bus_16      : 1;
    unsigned char reserved5     : 1;
    unsigned char rel_adr       : 1;
#endif
    unsigned char vendor[8];
    unsigned char product[16];
    unsigned char revision[4];
    unsigned char vendor_specific[20];
    unsigned char reserved7[2];
    unsigned char version1[2];
    unsigned char version2[2];
    unsigned char version3[2];
    unsigned char version4[2];
    unsigned char version5[2];
    unsigned char version6[2];
    unsigned char version7[2];
    unsigned char version8[2];

    // bytes 74-95: reserved
    // bytes 96-n: vendor specific
  };


  struct ricoh_mode_page_30 {
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char PS               : 1;
    unsigned char res_1            : 1;
    unsigned char page_code        : 6;
#else
    unsigned char page_code        : 6;
    unsigned char res_1            : 1;
    unsigned char PS               : 1;
#endif
    unsigned char page_len;                  /* 0xE = 14 Bytes */
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char res_2_67        :2;
    unsigned char AWSCS           :1;     /* Auto write speed control supp. */
    unsigned char ARSCS           :1;     /* Auto read speed control supp. */
    unsigned char res_2_23        :2;
    unsigned char TWBFS           :1;     /* Test Burn-Free sup.  */
    unsigned char BUEFS           :1;     /* Burn-Free supported  */
#else
    unsigned char BUEFS           :1;     /* Burn-Free supported  */
    unsigned char TWBFS           :1;     /* Test Burn-Free sup.  */
    unsigned char res_2_23        :2;
    unsigned char ARSCS           :1;     /* Auto read speed control supp. */
    unsigned char AWSCS           :1;     /* Auto write speed control supp. */
    unsigned char res_2_67        :2;
#endif
#ifdef WORDS_BIGENDIAN // __BYTE_ORDER == __BIG_ENDIAN
    unsigned char res_3_67        :2;
    unsigned char AWSCD           :1;     /* Auto write speed control disabled */
    unsigned char ARSCE           :1;     /* Auto read speed control enabled */
    unsigned char res_2_13        :3;
    unsigned char BUEFE           :1;     /* Burn-Free enabled    */
#else
    unsigned char BUEFE           :1;     /* Burn-Free enabled    */
    unsigned char res_2_13        :3;
    unsigned char ARSCE           :1;     /* Auto read speed control enabled */
    unsigned char AWSCD           :1;     /* Auto write speed control disabled */
    unsigned char res_3_67        :2;
#endif
    unsigned char link_counter[2];        /* Burn-Free link counter */
    unsigned char res[10];                /* Padding up to 16 bytes */
  };
}


#endif