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1 /*
2 * -- <linux/cdrom.h>
3 * general (not only SCSI) header library for linux CDROM drivers
4 * (C) 1992 David Giller rafetmad@oxy.edu
5 * 1994, 1995 Eberhard Moenkeberg emoenke@gwdg.de
6 *
7 */
8
9 #ifndef _LINUX_CDROM_H
10 #define _LINUX_CDROM_H
11
12 /*
13 * some fix numbers
14 */
15 #define CD_MINS 74 /* max. minutes per CD, not really a limit */
16 #define CD_SECS 60 /* seconds per minute */
17 #define CD_FRAMES 75 /* frames per second */
18
19 #define CD_SYNC_SIZE 12 /* 12 sync bytes per raw data frame, not transfered by the drive */
20 #define CD_HEAD_SIZE 4 /* header (address) bytes per raw data frame */
21 #define CD_SUBHEAD_SIZE 8 /* subheader bytes per raw XA data frame */
22 #define CD_XA_HEAD (CD_HEAD_SIZE+CD_SUBHEAD_SIZE) /* "before data" part of raw XA frame */
23 #define CD_XA_SYNC_HEAD (CD_SYNC_SIZE+CD_XA_HEAD)/* sync bytes + header of XA frame */
24
25 #define CD_FRAMESIZE 2048 /* bytes per frame, "cooked" mode */
26 #define CD_FRAMESIZE_RAW 2352 /* bytes per frame, "raw" mode */
27 /* most drives don't deliver everything: */
28 #define CD_FRAMESIZE_RAW1 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE) /* 2340 */
29 #define CD_FRAMESIZE_RAW0 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE-CD_HEAD_SIZE) /* 2336 */
30 /* Optics drive also has a 'read all' mode: */
31 #define CD_FRAMESIZE_RAWER 2646 /* bytes per frame */
32
33 #define CD_EDC_SIZE 4 /* bytes EDC per most raw data frame types */
34 #define CD_ZERO_SIZE 8 /* bytes zero per yellow book mode 1 frame */
35 #define CD_ECC_SIZE 276 /* bytes ECC per most raw data frame types */
36 #define CD_XA_TAIL (CD_EDC_SIZE+CD_ECC_SIZE) /* "after data" part of raw XA frame */
37
38 #define CD_FRAMESIZE_SUB 96 /* subchannel data "frame" size */
39 #define CD_MSF_OFFSET 150 /* MSF numbering offset of first frame */
40
41 #define CD_CHUNK_SIZE 24 /* lowest-level "data bytes piece" */
42 #define CD_NUM_OF_CHUNKS 98 /* chunks per frame */
43
44 #define CD_FRAMESIZE_XA CD_FRAMESIZE_RAW1 /* obsolete name */
45 #define CD_BLOCK_OFFSET CD_MSF_OFFSET /* obsolete name */
46
47 /*
48 * the raw frame layout:
49 *
50 * - audio (red): | audio_sample_bytes |
51 * | 2352 |
52 *
53 * - data (yellow, mode1): | sync - head - data - EDC - zero - ECC |
54 * | 12 - 4 - 2048 - 4 - 8 - 276 |
55 *
56 * - data (yellow, mode2): | sync - head - data |
57 * | 12 - 4 - 2336 |
58 *
59 * - XA data (green, mode2 form1): | sync - head - sub - data - EDC - ECC |
60 * | 12 - 4 - 8 - 2048 - 4 - 276 |
61 *
62 * - XA data (green, mode2 form2): | sync - head - sub - data - EDC |
63 * | 12 - 4 - 8 - 2324 - 4 |
64 */
65
66 /*
67 * CDROM IOCTL structures
68 */
69
70 struct cdrom_blk
71 {
72 unsigned from;
73 unsigned short len;
74 };
75
76
77 struct cdrom_msf
78 {
79 u_char cdmsf_min0; /* start minute */
80 u_char cdmsf_sec0; /* start second */
81 u_char cdmsf_frame0; /* start frame */
82 u_char cdmsf_min1; /* end minute */
83 u_char cdmsf_sec1; /* end second */
84 u_char cdmsf_frame1; /* end frame */
85 };
86
87 struct cdrom_ti
88 {
89 u_char cdti_trk0; /* start track */
90 u_char cdti_ind0; /* start index */
91 u_char cdti_trk1; /* end track */
92 u_char cdti_ind1; /* end index */
93 };
94
95 struct cdrom_tochdr
96 {
97 u_char cdth_trk0; /* start track */
98 u_char cdth_trk1; /* end track */
99 };
100
101 struct cdrom_msf0 /* address in MSF format */
102 {
103 u_char minute;
104 u_char second;
105 u_char frame;
106 };
107
108 union cdrom_addr /* address in either MSF or logical format */
109 {
110 struct cdrom_msf0 msf;
111 int lba;
112 };
113
114 struct cdrom_tocentry
115 {
116 u_char cdte_track;
117 u_char cdte_adr :4;
118 u_char cdte_ctrl :4;
119 u_char cdte_format;
120 union cdrom_addr cdte_addr;
121 u_char cdte_datamode;
122 };
123
124 /*
125 * CD-ROM address types (cdrom_tocentry.cdte_format)
126 */
127 #define CDROM_LBA 0x01 /* "logical block": first frame is #0 */
128 #define CDROM_MSF 0x02 /* "minute-second-frame": binary, not bcd here! */
129
130 /*
131 * bit to tell whether track is data or audio (cdrom_tocentry.cdte_ctrl)
132 */
133 #define CDROM_DATA_TRACK 0x04
134
135 /*
136 * The leadout track is always 0xAA, regardless of # of tracks on disc
137 */
138 #define CDROM_LEADOUT 0xAA
139
140 struct cdrom_subchnl
141 {
142 u_char cdsc_format;
143 u_char cdsc_audiostatus;
144 u_char cdsc_adr: 4;
145 u_char cdsc_ctrl: 4;
146 u_char cdsc_trk;
147 u_char cdsc_ind;
148 union cdrom_addr cdsc_absaddr;
149 union cdrom_addr cdsc_reladdr;
150 };
151
152 /*
153 * audio states (from SCSI-2, but seen with other drives, too)
154 */
155 #define CDROM_AUDIO_INVALID 0x00 /* audio status not supported */
156 #define CDROM_AUDIO_PLAY 0x11 /* audio play operation in progress */
157 #define CDROM_AUDIO_PAUSED 0x12 /* audio play operation paused */
158 #define CDROM_AUDIO_COMPLETED 0x13 /* audio play successfully completed */
159 #define CDROM_AUDIO_ERROR 0x14 /* audio play stopped due to error */
160 #define CDROM_AUDIO_NO_STATUS 0x15 /* no current audio status to return */
161
162 struct cdrom_volctrl
163 {
164 u_char channel0;
165 u_char channel1;
166 u_char channel2;
167 u_char channel3;
168 };
169
170 struct cdrom_read
171 {
172 int cdread_lba;
173 caddr_t cdread_bufaddr;
174 int cdread_buflen;
175 };
176
177 /*
178 * extensions for transfering audio frames
179 * currently used by sbpcd.c, cdu31a.c, ide-cd.c
180 */
181 struct cdrom_read_audio
182 {
183 union cdrom_addr addr; /* frame address */
184 u_char addr_format; /* CDROM_LBA or CDROM_MSF */
185 int nframes; /* number of 2352-byte-frames to read at once, limited by the drivers */
186 u_char *buf; /* frame buffer (size: nframes*2352 bytes) */
187 };
188
189 /*
190 * this has to be the "arg" of the CDROMMULTISESSION ioctl
191 * for obtaining multi session info.
192 * The returned "addr" is valid only if "xa_flag" is true.
193 */
194 struct cdrom_multisession
195 {
196 union cdrom_addr addr; /* frame address: start-of-last-session (not the new "frame 16"!)*/
197 u_char xa_flag; /* 1: "is XA disk" */
198 u_char addr_format; /* CDROM_LBA or CDROM_MSF */
199 };
200
201 #ifdef FIVETWELVE
202 #define CDROM_MODE1_SIZE 512
203 #else
204 #define CDROM_MODE1_SIZE 2048
205 #endif FIVETWELVE
206 #define CDROM_MODE2_SIZE 2336
207
208 /*
209 * CD-ROM IOCTL commands
210 * For IOCTL calls, we will commandeer byte 0x53, or 'S'.
211 */
212
213 #define CDROMPAUSE 0x5301
214 #define CDROMRESUME 0x5302
215 #define CDROMPLAYMSF 0x5303 /* (struct cdrom_msf) */
216 #define CDROMPLAYTRKIND 0x5304 /* (struct cdrom_ti) */
217
218 #define CDROMREADTOCHDR 0x5305 /* (struct cdrom_tochdr) */
219 #define CDROMREADTOCENTRY 0x5306 /* (struct cdrom_tocentry) */
220
221 #define CDROMSTOP 0x5307 /* stop the drive motor */
222 #define CDROMSTART 0x5308 /* turn the motor on */
223
224 #define CDROMEJECT 0x5309 /* eject CD-ROM media */
225
226 #define CDROMVOLCTRL 0x530a /* (struct cdrom_volctrl) */
227
228 #define CDROMSUBCHNL 0x530b /* (struct cdrom_subchnl) */
229
230 #define CDROMREADMODE2 0x530c /* (struct cdrom_read) */
231 /* read type-2 data */
232
233 #define CDROMREADMODE1 0x530d /* (struct cdrom_read) */
234 /* read type-1 data */
235
236 #define CDROMREADAUDIO 0x530e /* (struct cdrom_read_audio) */
237
238 /*
239 * enable (1) / disable (0) auto-ejecting
240 */
241 #define CDROMEJECT_SW 0x530f /* arg: 0 or 1 */
242
243 /*
244 * obtain the start-of-last-session address of multi session disks
245 */
246 #define CDROMMULTISESSION 0x5310 /* (struct cdrom_multisession) */
247
248 /*
249 * obtain the "universal product code" number
250 * (only some data disks have it coded)
251 */
252 #define CDROM_GET_UPC 0x5311 /* 8 bytes returned */
253
254 #define CDROMRESET 0x5312 /* hard-reset the drive */
255 #define CDROMVOLREAD 0x5313 /* let the drive tell its volume setting */
256 /* (struct cdrom_volctrl) */
257
258 /*
259 * these ioctls are used in aztcd.c and optcd.c
260 */
261 #define CDROMREADRAW 0x5314 /* read data in raw mode */
262 #define CDROMREADCOOKED 0x5315 /* read data in cooked mode */
263 #define CDROMSEEK 0x5316 /* seek msf address */
264
265 /*
266 * for playing audio in logical block addressing mode
267 */
268 #define CDROMPLAYBLK 0x5317 /* (struct cdrom_blk) */
269
270 /*
271 * these ioctls are used in optcd.c
272 */
273 #define CDROMREADALL 0x5318 /* read all 2646 bytes */
274 #define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */
275
276
277 /*
278 * CD-ROM-specific SCSI command opcodes
279 */
280
281 /*
282 * Group 2 (10-byte). All of these are called 'optional' by SCSI-II.
283 */
284 #define SCMD_READ_TOC 0x43 /* read table of contents */
285 #define SCMD_PLAYAUDIO_MSF 0x47 /* play data at time offset */
286 #define SCMD_PLAYAUDIO_TI 0x48 /* play data at track/index */
287 #define SCMD_PAUSE_RESUME 0x4B /* pause/resume audio */
288 #define SCMD_READ_SUBCHANNEL 0x42 /* read SC info on playing disc */
289 #define SCMD_PLAYAUDIO10 0x45 /* play data at logical block */
290 #define SCMD_READ_HEADER 0x44 /* read TOC header */
291
292 /*
293 * Group 5
294 */
295 #define SCMD_PLAYAUDIO12 0xA5 /* play data at logical block */
296 #define SCMD_PLAYTRACK_REL12 0xA9 /* play track at relative offset */
297
298 /*
299 * Group 6 Commands
300 */
301 #define SCMD_CD_PLAYBACK_CONTROL 0xC9 /* Sony vendor-specific audio */
302 #define SCMD_CD_PLAYBACK_STATUS 0xC4 /* control opcodes */
303
304 /*
305 * CD-ROM capacity structure.
306 */
307 struct scsi_capacity
308 {
309 u_long capacity;
310 u_long lbasize;
311 };
312
313 /*
314 * CD-ROM MODE_SENSE/MODE_SELECT parameters
315 */
316 #define ERR_RECOVERY_PARMS 0x01
317 #define DISCO_RECO_PARMS 0x02
318 #define FORMAT_PARMS 0x03
319 #define GEOMETRY_PARMS 0x04
320 #define CERTIFICATION_PARMS 0x06
321 #define CACHE_PARMS 0x38
322
323 /*
324 * standard mode-select header prepended to all mode-select commands
325 */
326 struct ccs_modesel_head
327 {
328 u_char _r1; /* reserved */
329 u_char medium; /* device-specific medium type */
330 u_char _r2; /* reserved */
331 u_char block_desc_length; /* block descriptor length */
332 u_char density; /* device-specific density code */
333 u_char number_blocks_hi; /* number of blocks in this block desc */
334 u_char number_blocks_med;
335 u_char number_blocks_lo;
336 u_char _r3;
337 u_char block_length_hi; /* block length for blocks in this desc */
338 u_short block_length;
339 };
340
341 /*
342 * error recovery parameters
343 */
344 struct ccs_err_recovery
345 {
346 u_char _r1 : 2; /* reserved */
347 u_char page_code : 6; /* page code */
348 u_char page_length; /* page length */
349 u_char awre : 1; /* auto write realloc enabled */
350 u_char arre : 1; /* auto read realloc enabled */
351 u_char tb : 1; /* transfer block */
352 u_char rc : 1; /* read continuous */
353 u_char eec : 1; /* enable early correction */
354 u_char per : 1; /* post error */
355 u_char dte : 1; /* disable transfer on error */
356 u_char dcr : 1; /* disable correction */
357 u_char retry_count; /* error retry count */
358 u_char correction_span; /* largest recov. to be attempted, bits */
359 u_char head_offset_count; /* head offset (2's C) for each retry */
360 u_char strobe_offset_count; /* data strobe */
361 u_char recovery_time_limit; /* time limit on recovery attempts */
362 };
363
364 /*
365 * disco/reco parameters
366 */
367 struct ccs_disco_reco
368 {
369 u_char _r1 : 2; /* reserved */
370 u_char page_code : 6; /* page code */
371 u_char page_length; /* page length */
372 u_char buffer_full_ratio; /* write buffer reconnect threshold */
373 u_char buffer_empty_ratio; /* read */
374 u_short bus_inactivity_limit; /* limit on bus inactivity time */
375 u_short disconnect_time_limit; /* minimum disconnect time */
376 u_short connect_time_limit; /* minimum connect time */
377 u_short _r2; /* reserved */
378 };
379
380 /*
381 * drive geometry parameters
382 */
383 struct ccs_geometry
384 {
385 u_char _r1 : 2; /* reserved */
386 u_char page_code : 6; /* page code */
387 u_char page_length; /* page length */
388 u_char cyl_ub; /* #cyls */
389 u_char cyl_mb;
390 u_char cyl_lb;
391 u_char heads; /* #heads */
392 u_char precomp_cyl_ub; /* precomp start */
393 u_char precomp_cyl_mb;
394 u_char precomp_cyl_lb;
395 u_char current_cyl_ub; /* reduced current start */
396 u_char current_cyl_mb;
397 u_char current_cyl_lb;
398 u_short step_rate; /* stepping motor rate */
399 u_char landing_cyl_ub; /* landing zone */
400 u_char landing_cyl_mb;
401 u_char landing_cyl_lb;
402 u_char _r2;
403 u_char _r3;
404 u_char _r4;
405 };
406
407 /*
408 * cache parameters
409 */
410 struct ccs_cache
411 {
412 u_char _r1 : 2; /* reserved */
413 u_char page_code : 6; /* page code */
414 u_char page_length; /* page length */
415 u_char mode; /* cache control byte */
416 u_char threshold; /* prefetch threshold */
417 u_char max_prefetch; /* maximum prefetch size */
418 u_char max_multiplier; /* maximum prefetch multiplier */
419 u_char min_prefetch; /* minimum prefetch size */
420 u_char min_multiplier; /* minimum prefetch multiplier */
421 u_char _r2[8];
422 };
423
424 #endif _LINUX_CDROM_H
425 /*==========================================================================*/
426 /*
427 * Overrides for Emacs so that we follow Linus's tabbing style.
428 * Emacs will notice this stuff at the end of the file and automatically
429 * adjust the settings for this buffer only. This must remain at the end
430 * of the file.
431 * ---------------------------------------------------------------------------
432 * Local variables:
433 * c-indent-level: 8
434 * c-brace-imaginary-offset: 0
435 * c-brace-offset: -8
436 * c-argdecl-indent: 8
437 * c-label-offset: -8
438 * c-continued-statement-offset: 8
439 * c-continued-brace-offset: 0
440 * End:
441 */
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