patch-1.3.27 linux/include/linux/cdrom.h
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- Lines: 745
- Date:
Thu Sep 14 09:46:23 1995
- Orig file:
v1.3.26/linux/include/linux/cdrom.h
- Orig date:
Sun Sep 3 12:27:02 1995
diff -u --recursive --new-file v1.3.26/linux/include/linux/cdrom.h linux/include/linux/cdrom.h
@@ -1,242 +1,112 @@
-/****************************************************************************************
- * *
- * 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 *
- * *
- ****************************************************************************************/
-
-#ifndef _LINUX_CDROM_H
-#define _LINUX_CDROM_H
-
-/*
- * 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_XA_SYNC_HEAD CD_XA_HEAD+12 /* sync bytes + header of XA frame */
/*
+ * -- <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
*
- * For IOCTL calls, we will commandeer byte 0x53, or 'S'.
- *
- */
-
-/*
- * 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 */
-};
+#ifndef _LINUX_CDROM_H
+#define _LINUX_CDROM_H
/*
- * disco/reco parameters
+ * some fix numbers
*/
+#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_XA_HEAD+12)/* 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 */
+
+#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 */
-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
- */
+#define CD_CHUNK_SIZE 24 /* lowest-level "data bytes piece" */
+#define CD_NUM_OF_CHUNKS 98 /* chunks per frame */
-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;
- };
+#define CD_FRAMESIZE_XA CD_FRAMESIZE_RAW1 /* obsolete name */
+#define CD_BLOCK_OFFSET CD_MSF_OFFSET /* obsolete name */
/*
- * cache parameters
+ * the raw frame layout:
+ *
+ * - 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 |
*/
-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_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;
+ } msf;
int lba;
- } cdte_addr;
+ } cdte_addr;
u_char cdte_datamode;
- };
+};
/*
* CD-ROM address types (cdrom_tocentry.cdte_format)
@@ -245,19 +115,17 @@
#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;
@@ -265,74 +133,72 @@
u_char cdsc_trk;
u_char cdsc_ind;
union
- {
+ {
struct
- {
+ {
u_char minute;
u_char second;
u_char frame;
- } msf;
+ } msf;
int lba;
- } cdsc_absaddr;
+ } cdsc_absaddr;
union
- {
+ {
struct
- {
+ {
u_char minute;
u_char second;
u_char frame;
- } msf;
+ } msf;
int lba;
- } cdsc_reladdr;
- };
+ } cdsc_reladdr;
+};
/*
- * 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 transfering audio frames
+ * currently used by sbpcd.c, cdu31a.c, ide-cd.c
*/
struct cdrom_read_audio
+{
+ union
{
- union
- {
- struct
+ struct
{
- u_char minute;
- u_char second;
- u_char frame;
+ 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) */
- };
+ 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) */
+};
/*
* this has to be the "arg" of the CDROMMULTISESSION ioctl
@@ -340,20 +206,20 @@
* The returned "addr" is valid only if "xa_flag" is true.
*/
struct cdrom_multisession
+{
+ union
{
- union
- {
- struct
+ struct
{
- u_char minute;
- u_char second;
- u_char frame;
+ 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 */
- };
+ 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 */
+};
#ifdef FIVETWELVE
#define CDROM_MODE1_SIZE 512
@@ -364,71 +230,225 @@
/*
* 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 (not suppt) */
-#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):
+ * enable (1) / disable (0) auto-ejecting
*/
-#define CDROMREADAUDIO 0x530e /* (struct cdrom_read_audio) */
-/*
- * preliminary extension for enable (1) / disable (0) auto-ejecting
- * currently used by sbpcd.c and sr.c
- * (still may change if other drivers will use it, too):
- */
-#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 CDROM_GET_UPC 0x5311 /* 8 bytes returned */
-#define CDROMRESET 0x5312 /* hard-reset the drive */
-#define CDROMVOLREAD 0x5313 /* let the drive tell its volume setting */
+#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
+ * these ioctls are used in aztcd.c
+ */
+#define CDROMREADRAW 0x5314 /* read data in raw mode */
+#define CDROMREADCOOKED 0x5315 /* read data in cooked mode */
+#define CDROMSEEK 0x5316 /*seek msf address*/
+
+
+
+/*
+ * 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 CDROMREADRAW 0x5314 /*read data in raw mode*/
-#define CDROMREADCOOKED 0x5315 /*read data in cooked mode*/
-#define CDROMSEEK 0x5316 /*seek msf address*/
+#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:
+ */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov
with Sam's (original) version of this