diff options
Diffstat (limited to 'include/linux/cdrom.h')
| -rw-r--r-- | include/linux/cdrom.h | 646 |
1 files changed, 337 insertions, 309 deletions
diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h index 1cd8cbeda..aba1458c3 100644 --- a/include/linux/cdrom.h +++ b/include/linux/cdrom.h @@ -1,12 +1,10 @@ -/**************************************************************************************** - * * - * general (not only SCSI) header library for linux CDROM drivers * - * (C) 1992 David Giller rafetmad@oxy.edu * - * 1994 Eberhard Moenkeberg emoenke@gwdg.de ("read audio" and some other stuff) * - * * - * <linux/cdrom.h> -- CD-ROM IOCTLs and structs * - * * - ****************************************************************************************/ +/* + * -- <linux/cdrom.h> + * general (not only SCSI) header library for linux CDROM drivers + * (C) 1992 David Giller rafetmad@oxy.edu + * 1994, 1995 Eberhard Moenkeberg emoenke@gwdg.de + * + */ #ifndef _LINUX_CDROM_H #define _LINUX_CDROM_H @@ -14,229 +12,114 @@ /* * some fix numbers */ -#define CD_MINS 74 /* max. minutes per CD */ -#define CD_SECS 60 /* seconds per minute */ -#define CD_FRAMES 75 /* frames per second */ -#define CD_CHUNK_SIZE 24 /* lowest-level "data bytes piece" */ -#define CD_NUM_OF_CHUNKS 98 /* chunks per frame */ -#define CD_FRAMESIZE 2048 /* bytes per frame, cooked mode */ -#define CD_FRAMESIZE_RAW0 2336 /* bytes per frame, "raw" mode */ -#define CD_FRAMESIZE_XA 2340 /* bytes per frame, "xa" mode */ -#define CD_FRAMESIZE_RAW 2352 /* bytes per frame, "raw" mode */ -#define CD_FRAMESIZE_SUB 96 /* subchannel data size */ -#define CD_BLOCK_OFFSET 150 /* offset of first logical frame */ -#define CD_XA_HEAD 12 /* header size of XA frame */ -#define CD_XA_TAIL 280 /* tail size of XA frame */ +#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, not transfered by the drive */ +#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_XA_HEAD (CD_HEAD_SIZE+CD_SUBHEAD_SIZE) /* "before data" part of raw XA frame */ +#define CD_XA_SYNC_HEAD (CD_SYNC_SIZE+CD_XA_HEAD)/* sync bytes + header of XA frame */ + +#define CD_FRAMESIZE 2048 /* bytes per frame, "cooked" mode */ +#define CD_FRAMESIZE_RAW 2352 /* bytes per frame, "raw" mode */ +/* 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 */ +/* Optics drive also has a 'read all' mode: */ +#define CD_FRAMESIZE_RAWER 2646 /* bytes per 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_XA_TAIL (CD_EDC_SIZE+CD_ECC_SIZE) /* "after data" part of raw XA frame */ + +#define CD_FRAMESIZE_SUB 96 /* subchannel data "frame" size */ +#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_XA CD_FRAMESIZE_RAW1 /* obsolete name */ +#define CD_BLOCK_OFFSET CD_MSF_OFFSET /* obsolete name */ /* + * the raw frame layout: * - * For IOCTL calls, we will commandeer byte 0x53, or 'S'. + * - 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 - EDC | + * | 12 - 4 - 8 - 2324 - 4 | */ /* - * CD-ROM-specific SCSI command opcodes - */ - -/* - * Group 2 (10-byte). All of these are called 'optional' by SCSI-II. - */ - -#define SCMD_READ_TOC 0x43 /* read table of contents */ -#define SCMD_PLAYAUDIO_MSF 0x47 /* play data at time offset */ -#define SCMD_PLAYAUDIO_TI 0x48 /* play data at track/index */ -#define SCMD_PAUSE_RESUME 0x4B /* pause/resume audio */ -#define SCMD_READ_SUBCHANNEL 0x42 /* read SC info on playing disc */ -#define SCMD_PLAYAUDIO10 0x45 /* play data at logical block */ -#define SCMD_READ_HEADER 0x44 /* read TOC header */ - -/* - * Group 5 - */ - -#define SCMD_PLAYAUDIO12 0xA5 /* play data at logical block */ -#define SCMD_PLAYTRACK_REL12 0xA9 /* play track at relative offset*/ - -/* - * Group 6 Commands - */ - -#define SCMD_CD_PLAYBACK_CONTROL 0xC9 /* Sony vendor-specific audio */ -#define SCMD_CD_PLAYBACK_STATUS 0xC4 /* control opcodes. info please!*/ - -/* - * CD-ROM capacity structure. - */ - -struct scsi_capacity - { - u_long capacity; - u_long lbasize; - }; - -/* - * CD-ROM MODE_SENSE/MODE_SELECT parameters - */ - -#define ERR_RECOVERY_PARMS 0x01 -#define DISCO_RECO_PARMS 0x02 -#define FORMAT_PARMS 0x03 -#define GEOMETRY_PARMS 0x04 -#define CERTIFICATION_PARMS 0x06 -#define CACHE_PARMS 0x38 - -/* - * standard mode-select header prepended to all mode-select commands - */ - -struct ccs_modesel_head - { - u_char _r1; /* reserved */ - u_char medium; /* device-specific medium type */ - u_char _r2; /* reserved */ - u_char block_desc_length; /* block descriptor length */ - u_char density; /* device-specific density code */ - u_char number_blocks_hi; /* number of blocks in this block desc */ - u_char number_blocks_med; - u_char number_blocks_lo; - u_char _r3; - u_char block_length_hi; /* block length for blocks in this desc */ - u_short block_length; - }; - -/* - * error recovery parameters - */ - -struct ccs_err_recovery - { - u_char _r1 : 2; /* reserved */ - u_char page_code : 6; /* page code */ - u_char page_length; /* page length */ - u_char awre : 1; /* auto write realloc enabled */ - u_char arre : 1; /* auto read realloc enabled */ - u_char tb : 1; /* transfer block */ - u_char rc : 1; /* read continuous */ - u_char eec : 1; /* enable early correction */ - u_char per : 1; /* post error */ - u_char dte : 1; /* disable transfer on error */ - u_char dcr : 1; /* disable correction */ - u_char retry_count; /* error retry count */ - u_char correction_span; /* largest recov. to be attempted, bits */ - u_char head_offset_count; /* head offset (2's C) for each retry */ - u_char strobe_offset_count; /* data strobe " */ - u_char recovery_time_limit; /* time limit on recovery attempts */ -}; - -/* - * disco/reco parameters + * CDROM IOCTL structures */ -struct ccs_disco_reco - { - u_char _r1 : 2; /* reserved */ - u_char page_code : 6; /* page code */ - u_char page_length; /* page length */ - u_char buffer_full_ratio; /* write buffer reconnect threshold */ - u_char buffer_empty_ratio; /* read " */ - u_short bus_inactivity_limit; /* limit on bus inactivity time */ - u_short disconnect_time_limit; /* minimum disconnect time */ - u_short connect_time_limit; /* minimum connect time */ - u_short _r2; /* reserved */ +struct cdrom_blk +{ + unsigned from; + unsigned short len; }; -/* - * drive geometry parameters - */ - -struct ccs_geometry - { - u_char _r1 : 2; /* reserved */ - u_char page_code : 6; /* page code */ - u_char page_length; /* page length */ - u_char cyl_ub; /* #cyls */ - u_char cyl_mb; - u_char cyl_lb; - u_char heads; /* #heads */ - u_char precomp_cyl_ub; /* precomp start */ - u_char precomp_cyl_mb; - u_char precomp_cyl_lb; - u_char current_cyl_ub; /* reduced current start */ - u_char current_cyl_mb; - u_char current_cyl_lb; - u_short step_rate; /* stepping motor rate */ - u_char landing_cyl_ub; /* landing zone */ - u_char landing_cyl_mb; - u_char landing_cyl_lb; - u_char _r2; - u_char _r3; - u_char _r4; - }; - -/* - * cache parameters - */ - -struct ccs_cache - { - u_char _r1 : 2; /* reserved */ - u_char page_code : 6; /* page code */ - u_char page_length; /* page length */ - u_char mode; /* cache control byte */ - u_char threshold; /* prefetch threshold */ - u_char max_prefetch; /* maximum prefetch size */ - u_char max_multiplier; /* maximum prefetch multiplier */ - u_char min_prefetch; /* minimum prefetch size */ - u_char min_multiplier; /* minimum prefetch multiplier */ - u_char _r2[8]; - }; - -/* - * CDROM IOCTL structures - */ struct cdrom_msf - { - u_char cdmsf_min0; /* start minute */ - u_char cdmsf_sec0; /* start second */ - u_char cdmsf_frame0; /* start frame */ - u_char cdmsf_min1; /* end minute */ - u_char cdmsf_sec1; /* end second */ - u_char cdmsf_frame1; /* end frame */ - }; +{ + u_char cdmsf_min0; /* start minute */ + u_char cdmsf_sec0; /* start second */ + u_char cdmsf_frame0; /* start frame */ + u_char cdmsf_min1; /* end minute */ + u_char cdmsf_sec1; /* end second */ + u_char cdmsf_frame1; /* end frame */ +}; struct cdrom_ti - { - u_char cdti_trk0; /* start track */ - u_char cdti_ind0; /* start index */ - u_char cdti_trk1; /* end track */ - u_char cdti_ind1; /* end index */ - }; +{ + u_char cdti_trk0; /* start track */ + u_char cdti_ind0; /* start index */ + u_char cdti_trk1; /* end track */ + u_char cdti_ind1; /* end index */ +}; struct cdrom_tochdr - { - u_char cdth_trk0; /* start track */ - u_char cdth_trk1; /* end track */ - }; +{ + u_char cdth_trk0; /* start track */ + u_char cdth_trk1; /* end track */ +}; + +struct cdrom_msf0 /* address in MSF format */ +{ + u_char minute; + u_char second; + u_char frame; +}; + +union cdrom_addr /* address in either MSF or logical format */ +{ + struct cdrom_msf0 msf; + int lba; +}; struct cdrom_tocentry - { +{ u_char cdte_track; u_char cdte_adr :4; u_char cdte_ctrl :4; u_char cdte_format; - union - { - struct - { - u_char minute; - u_char second; - u_char frame; - } msf; - int lba; - } cdte_addr; + union cdrom_addr cdte_addr; u_char cdte_datamode; - }; +}; /* * CD-ROM address types (cdrom_tocentry.cdte_format) @@ -245,94 +128,67 @@ struct cdrom_tocentry #define CDROM_MSF 0x02 /* "minute-second-frame": binary, not bcd here! */ /* - * bit to tell whether track is data or audio + * 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 struct cdrom_subchnl - { +{ u_char cdsc_format; u_char cdsc_audiostatus; u_char cdsc_adr: 4; u_char cdsc_ctrl: 4; u_char cdsc_trk; u_char cdsc_ind; - union - { - struct - { - u_char minute; - u_char second; - u_char frame; - } msf; - int lba; - } cdsc_absaddr; - union - { - struct - { - u_char minute; - u_char second; - u_char frame; - } msf; - int lba; - } cdsc_reladdr; - }; + union cdrom_addr cdsc_absaddr; + union cdrom_addr cdsc_reladdr; +}; + +struct cdrom_mcn { + u_char medium_catalog_number[14]; /* 13 ASCII digits, null-terminated */ +}; /* - * return value from READ SUBCHANNEL DATA + * 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 */ +#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 */ struct cdrom_volctrl - { +{ u_char channel0; u_char channel1; u_char channel2; u_char channel3; - }; +}; struct cdrom_read - { +{ int cdread_lba; caddr_t cdread_bufaddr; int cdread_buflen; - }; +}; /* - * preliminary extensions for transferring audio frames - * currently used by sbpcd.c - * (still may change if other drivers will use it, too): + * extensions for transferring audio frames + * currently used by sbpcd.c, cdu31a.c, ide-cd.c */ struct cdrom_read_audio - { - union - { - struct - { - u_char minute; - u_char second; - u_char frame; - } msf; - int lba; - } addr; /* frame address */ - u_char addr_format; /* CDROM_LBA or CDROM_MSF */ - int nframes; /* number of 2352-byte-frames to read at once, limited by the drivers */ - u_char *buf; /* frame buffer (size: nframes*2352 bytes) */ - }; +{ + union cdrom_addr addr; /* frame address */ + u_char addr_format; /* CDROM_LBA or CDROM_MSF */ + int nframes; /* number of 2352-byte-frames to read at once, limited by the drivers */ + u_char *buf; /* frame buffer (size: nframes*2352 bytes) */ +}; /* * this has to be the "arg" of the CDROMMULTISESSION ioctl @@ -340,20 +196,11 @@ struct cdrom_read_audio * The returned "addr" is valid only if "xa_flag" is true. */ struct cdrom_multisession - { - union - { - struct - { - u_char minute; - u_char second; - u_char frame; - } msf; - int lba; - } addr; /* frame address: start-of-last-session (not the new "frame 16"!)*/ - u_char xa_flag; /* 1: "is XA disk" */ - u_char addr_format; /* CDROM_LBA or CDROM_MSF */ - }; +{ + union cdrom_addr addr; /* frame address: start-of-last-session (not the new "frame 16"!)*/ + u_char xa_flag; /* 1: "is XA disk" */ + u_char addr_format; /* CDROM_LBA or CDROM_MSF */ +}; #ifdef FIVETWELVE #define CDROM_MODE1_SIZE 512 @@ -364,54 +211,235 @@ struct cdrom_multisession /* * CD-ROM IOCTL commands + * For IOCTL calls, we will commandeer byte 0x53, or 'S'. */ -#define CDROMPAUSE 0x5301 /* pause */ -#define CDROMRESUME 0x5302 /* resume */ +#define CDROMPAUSE 0x5301 +#define CDROMRESUME 0x5302 +#define CDROMPLAYMSF 0x5303 /* (struct cdrom_msf) */ +#define CDROMPLAYTRKIND 0x5304 /* (struct cdrom_ti) */ -#define CDROMPLAYMSF 0x5303 /* (struct cdrom_msf) */ - /* SCMD_PLAY_AUDIO_MSF */ +#define CDROMREADTOCHDR 0x5305 /* (struct cdrom_tochdr) */ +#define CDROMREADTOCENTRY 0x5306 /* (struct cdrom_tocentry) */ -#define CDROMPLAYTRKIND 0x5304 /* (struct cdrom_ti) */ - /* SCMD_PLAY_AUDIO_TI */ +#define CDROMSTOP 0x5307 /* stop the drive motor */ +#define CDROMSTART 0x5308 /* turn the motor on */ -#define CDROMREADTOCHDR 0x5305 /* (struct cdrom_tochdr) */ - /* read the TOC header */ -#define CDROMREADTOCENTRY 0x5306 /* (struct cdrom_tocentry) */ - /* read a TOC entry */ +#define CDROMEJECT 0x5309 /* eject CD-ROM media */ -#define CDROMSTOP 0x5307 /* stop the drive motor */ -#define CDROMSTART 0x5308 /* turn the motor on */ +#define CDROMVOLCTRL 0x530a /* (struct cdrom_volctrl) */ -#define CDROMEJECT 0x5309 /* eject CD-ROM media */ +#define CDROMSUBCHNL 0x530b /* (struct cdrom_subchnl) */ -#define CDROMVOLCTRL 0x530a /* (struct cdrom_volctrl) */ - /* volume control */ +#define CDROMREADMODE2 0x530c /* (struct cdrom_read) */ + /* read type-2 data */ -#define CDROMSUBCHNL 0x530b /* (struct cdrom_subchnl) */ - /* read Q sub-channel data */ +#define CDROMREADMODE1 0x530d /* (struct cdrom_read) */ + /* read type-1 data */ -#define CDROMREADMODE2 0x530c /* (struct cdrom_read) */ - /* read type-2 data (not suppt) */ +#define CDROMREADAUDIO 0x530e /* (struct cdrom_read_audio) */ -#define CDROMREADMODE1 0x530d /* (struct cdrom_read) */ - /* read type-1 data */ -/* - * preliminary extension for transferring audio frames - * currently used by cdu31a.c and sbpcd.c - * (still may change if other drivers will use it, too): - */ -#define CDROMREADAUDIO 0x530e /* (struct cdrom_read_audio) */ /* - * preliminary extension for enable (1) / disable (0) auto-ejecting - * currently used by sbpcd.c - * (still may change if other drivers will use it, too): + * enable (1) / disable (0) auto-ejecting */ -#define CDROMEJECT_SW 0x530f /* arg: 0 or 1 */ +#define CDROMEJECT_SW 0x530f /* arg: 0 or 1 */ /* * obtain the start-of-last-session address of multi session disks */ -#define CDROMMULTISESSION 0x5310 /* (struct cdrom_multisession) */ +#define CDROMMULTISESSION 0x5310 /* (struct cdrom_multisession) */ + +/* + * obtain the "universal product code" number + * (only some data disks have it coded) + */ +#define CDROM_GET_UPC 0x5311 /* 8 bytes returned */ + +#define CDROMRESET 0x5312 /* hard-reset the drive */ +#define CDROMVOLREAD 0x5313 /* let the drive tell its volume setting */ + /* (struct cdrom_volctrl) */ + +/* + * these ioctls are used in aztcd.c and optcd.c + */ +#define CDROMREADRAW 0x5314 /* read data in raw mode */ +#define CDROMREADCOOKED 0x5315 /* read data in cooked mode */ +#define CDROMSEEK 0x5316 /* seek msf address */ + +/* + * for playing audio in logical block addressing mode + */ +#define CDROMPLAYBLK 0x5317 /* (struct cdrom_blk) */ + +/* + * these ioctls are used in optcd.c + */ +#define CDROMREADALL 0x5318 /* read all 2646 bytes */ +#define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */ + + +/* + * CD-ROM-specific SCSI command opcodes + */ + +/* + * Group 2 (10-byte). All of these are called 'optional' by SCSI-II. + */ +#define SCMD_READ_TOC 0x43 /* read table of contents */ +#define SCMD_PLAYAUDIO_MSF 0x47 /* play data at time offset */ +#define SCMD_PLAYAUDIO_TI 0x48 /* play data at track/index */ +#define SCMD_PAUSE_RESUME 0x4B /* pause/resume audio */ +#define SCMD_READ_SUBCHANNEL 0x42 /* read SC info on playing disc */ +#define SCMD_PLAYAUDIO10 0x45 /* play data at logical block */ +#define SCMD_READ_HEADER 0x44 /* read TOC header */ + +/* + * Group 5 + */ +#define SCMD_PLAYAUDIO12 0xA5 /* play data at logical block */ +#define SCMD_PLAYTRACK_REL12 0xA9 /* play track at relative offset */ + +/* + * Group 6 Commands + */ +#define SCMD_CD_PLAYBACK_CONTROL 0xC9 /* Sony vendor-specific audio */ +#define SCMD_CD_PLAYBACK_STATUS 0xC4 /* control opcodes */ + +/* + * CD-ROM capacity structure. + */ +struct scsi_capacity +{ + u_long capacity; + u_long lbasize; +}; + +/* + * CD-ROM MODE_SENSE/MODE_SELECT parameters + */ +#define ERR_RECOVERY_PARMS 0x01 +#define DISCO_RECO_PARMS 0x02 +#define FORMAT_PARMS 0x03 +#define GEOMETRY_PARMS 0x04 +#define CERTIFICATION_PARMS 0x06 +#define CACHE_PARMS 0x38 + +/* + * standard mode-select header prepended to all mode-select commands + */ +struct ccs_modesel_head +{ + u_char _r1; /* reserved */ + u_char medium; /* device-specific medium type */ + u_char _r2; /* reserved */ + u_char block_desc_length; /* block descriptor length */ + u_char density; /* device-specific density code */ + u_char number_blocks_hi; /* number of blocks in this block desc */ + u_char number_blocks_med; + u_char number_blocks_lo; + u_char _r3; + u_char block_length_hi; /* block length for blocks in this desc */ + u_short block_length; +}; + +/* + * error recovery parameters + */ +struct ccs_err_recovery +{ + u_char _r1 : 2; /* reserved */ + u_char page_code : 6; /* page code */ + u_char page_length; /* page length */ + u_char awre : 1; /* auto write realloc enabled */ + u_char arre : 1; /* auto read realloc enabled */ + u_char tb : 1; /* transfer block */ + u_char rc : 1; /* read continuous */ + u_char eec : 1; /* enable early correction */ + u_char per : 1; /* post error */ + u_char dte : 1; /* disable transfer on error */ + u_char dcr : 1; /* disable correction */ + u_char retry_count; /* error retry count */ + u_char correction_span; /* largest recov. to be attempted, bits */ + u_char head_offset_count; /* head offset (2's C) for each retry */ + u_char strobe_offset_count; /* data strobe */ + u_char recovery_time_limit; /* time limit on recovery attempts */ +}; + +/* + * disco/reco parameters + */ +struct ccs_disco_reco +{ + u_char _r1 : 2; /* reserved */ + u_char page_code : 6; /* page code */ + u_char page_length; /* page length */ + u_char buffer_full_ratio; /* write buffer reconnect threshold */ + u_char buffer_empty_ratio; /* read */ + u_short bus_inactivity_limit; /* limit on bus inactivity time */ + u_short disconnect_time_limit; /* minimum disconnect time */ + u_short connect_time_limit; /* minimum connect time */ + u_short _r2; /* reserved */ +}; + +/* + * drive geometry parameters + */ +struct ccs_geometry +{ + u_char _r1 : 2; /* reserved */ + u_char page_code : 6; /* page code */ + u_char page_length; /* page length */ + u_char cyl_ub; /* #cyls */ + u_char cyl_mb; + u_char cyl_lb; + u_char heads; /* #heads */ + u_char precomp_cyl_ub; /* precomp start */ + u_char precomp_cyl_mb; + u_char precomp_cyl_lb; + u_char current_cyl_ub; /* reduced current start */ + u_char current_cyl_mb; + u_char current_cyl_lb; + u_short step_rate; /* stepping motor rate */ + u_char landing_cyl_ub; /* landing zone */ + u_char landing_cyl_mb; + u_char landing_cyl_lb; + u_char _r2; + u_char _r3; + u_char _r4; +}; + +/* + * cache parameters + */ +struct ccs_cache +{ + u_char _r1 : 2; /* reserved */ + u_char page_code : 6; /* page code */ + u_char page_length; /* page length */ + u_char mode; /* cache control byte */ + u_char threshold; /* prefetch threshold */ + u_char max_prefetch; /* maximum prefetch size */ + u_char max_multiplier; /* maximum prefetch multiplier */ + u_char min_prefetch; /* minimum prefetch size */ + u_char min_multiplier; /* minimum prefetch multiplier */ + u_char _r2[8]; +}; #endif _LINUX_CDROM_H +/*==========================================================================*/ +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * Emacs will notice this stuff at the end of the file and automatically + * adjust the settings for this buffer only. This must remain at the end + * of the file. + * --------------------------------------------------------------------------- + * Local variables: + * c-indent-level: 8 + * c-brace-imaginary-offset: 0 + * c-brace-offset: -8 + * c-argdecl-indent: 8 + * c-label-offset: -8 + * c-continued-statement-offset: 8 + * c-continued-brace-offset: 0 + * End: + */ |