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1 /****************************************************************************************
2 * *
3 * general (not only SCSI) header library for linux CDROM drivers *
4 * (C) 1992 David Giller rafetmad@oxy.edu *
5 * 1994 Eberhard Moenkeberg emoenke@gwdg.de ("read audio" and some other stuff) *
6 * *
7 * <linux/cdrom.h> -- CD-ROM IOCTLs and structs *
8 * *
9 ****************************************************************************************/
10
11 #ifndef _LINUX_CDROM_H
12 #define _LINUX_CDROM_H
13
14 /*
15 * some fix numbers
16 */
17 #define CD_MINS 74 /* max. minutes per CD */
18 #define CD_SECS 60 /* seconds per minute */
19 #define CD_FRAMES 75 /* frames per second */
20 #define CD_CHUNK_SIZE 24 /* lowest-level "data bytes piece" */
21 #define CD_NUM_OF_CHUNKS 98 /* chunks per frame */
22 #define CD_FRAMESIZE 2048 /* bytes per frame, cooked mode */
23 #define CD_FRAMESIZE_RAW0 2336 /* bytes per frame, "raw" mode */
24 #define CD_FRAMESIZE_XA 2340 /* bytes per frame, "xa" mode */
25 #define CD_FRAMESIZE_RAW 2352 /* bytes per frame, "raw" mode */
26 #define CD_FRAMESIZE_SUB 96 /* subchannel data size */
27 #define CD_BLOCK_OFFSET 150 /* offset of first logical frame */
28 #define CD_XA_HEAD 12 /* header size of XA frame */
29 #define CD_XA_TAIL 280 /* tail size of XA frame */
30
31 /*
32 *
33 * For IOCTL calls, we will commandeer byte 0x53, or 'S'.
34 *
35 */
36
37 /*
38 * CD-ROM-specific SCSI command opcodes
39 */
40
41 /*
42 * Group 2 (10-byte). All of these are called 'optional' by SCSI-II.
43 */
44
45 #define SCMD_READ_TOC 0x43 /* read table of contents */
46 #define SCMD_PLAYAUDIO_MSF 0x47 /* play data at time offset */
47 #define SCMD_PLAYAUDIO_TI 0x48 /* play data at track/index */
48 #define SCMD_PAUSE_RESUME 0x4B /* pause/resume audio */
49 #define SCMD_READ_SUBCHANNEL 0x42 /* read SC info on playing disc */
50 #define SCMD_PLAYAUDIO10 0x45 /* play data at logical block */
51 #define SCMD_READ_HEADER 0x44 /* read TOC header */
52
53 /*
54 * Group 5
55 */
56
57 #define SCMD_PLAYAUDIO12 0xA5 /* play data at logical block */
58 #define SCMD_PLAYTRACK_REL12 0xA9 /* play track at relative offset*/
59
60 /*
61 * Group 6 Commands
62 */
63
64 #define SCMD_CD_PLAYBACK_CONTROL 0xC9 /* Sony vendor-specific audio */
65 #define SCMD_CD_PLAYBACK_STATUS 0xC4 /* control opcodes. info please!*/
66
67 /*
68 * CD-ROM capacity structure.
69 */
70
71 struct scsi_capacity
72 {
73 u_long capacity;
74 u_long lbasize;
75 };
76
77 /*
78 * CD-ROM MODE_SENSE/MODE_SELECT parameters
79 */
80
81 #define ERR_RECOVERY_PARMS 0x01
82 #define DISCO_RECO_PARMS 0x02
83 #define FORMAT_PARMS 0x03
84 #define GEOMETRY_PARMS 0x04
85 #define CERTIFICATION_PARMS 0x06
86 #define CACHE_PARMS 0x38
87
88 /*
89 * standard mode-select header prepended to all mode-select commands
90 */
91
92 struct ccs_modesel_head
93 {
94 u_char _r1; /* reserved */
95 u_char medium; /* device-specific medium type */
96 u_char _r2; /* reserved */
97 u_char block_desc_length; /* block descriptor length */
98 u_char density; /* device-specific density code */
99 u_char number_blocks_hi; /* number of blocks in this block desc */
100 u_char number_blocks_med;
101 u_char number_blocks_lo;
102 u_char _r3;
103 u_char block_length_hi; /* block length for blocks in this desc */
104 u_short block_length;
105 };
106
107 /*
108 * error recovery parameters
109 */
110
111 struct ccs_err_recovery
112 {
113 u_char _r1 : 2; /* reserved */
114 u_char page_code : 6; /* page code */
115 u_char page_length; /* page length */
116 u_char awre : 1; /* auto write realloc enabled */
117 u_char arre : 1; /* auto read realloc enabled */
118 u_char tb : 1; /* transfer block */
119 u_char rc : 1; /* read continuous */
120 u_char eec : 1; /* enable early correction */
121 u_char per : 1; /* post error */
122 u_char dte : 1; /* disable transfer on error */
123 u_char dcr : 1; /* disable correction */
124 u_char retry_count; /* error retry count */
125 u_char correction_span; /* largest recov. to be attempted, bits */
126 u_char head_offset_count; /* head offset (2's C) for each retry */
127 u_char strobe_offset_count; /* data strobe " */
128 u_char recovery_time_limit; /* time limit on recovery attempts */
129 };
130
131 /*
132 * disco/reco parameters
133 */
134
135 struct ccs_disco_reco
136 {
137 u_char _r1 : 2; /* reserved */
138 u_char page_code : 6; /* page code */
139 u_char page_length; /* page length */
140 u_char buffer_full_ratio; /* write buffer reconnect threshold */
141 u_char buffer_empty_ratio; /* read " */
142 u_short bus_inactivity_limit; /* limit on bus inactivity time */
143 u_short disconnect_time_limit; /* minimum disconnect time */
144 u_short connect_time_limit; /* minimum connect time */
145 u_short _r2; /* reserved */
146 };
147
148 /*
149 * drive geometry parameters
150 */
151
152 struct ccs_geometry
153 {
154 u_char _r1 : 2; /* reserved */
155 u_char page_code : 6; /* page code */
156 u_char page_length; /* page length */
157 u_char cyl_ub; /* #cyls */
158 u_char cyl_mb;
159 u_char cyl_lb;
160 u_char heads; /* #heads */
161 u_char precomp_cyl_ub; /* precomp start */
162 u_char precomp_cyl_mb;
163 u_char precomp_cyl_lb;
164 u_char current_cyl_ub; /* reduced current start */
165 u_char current_cyl_mb;
166 u_char current_cyl_lb;
167 u_short step_rate; /* stepping motor rate */
168 u_char landing_cyl_ub; /* landing zone */
169 u_char landing_cyl_mb;
170 u_char landing_cyl_lb;
171 u_char _r2;
172 u_char _r3;
173 u_char _r4;
174 };
175
176 /*
177 * cache parameters
178 */
179
180 struct ccs_cache
181 {
182 u_char _r1 : 2; /* reserved */
183 u_char page_code : 6; /* page code */
184 u_char page_length; /* page length */
185 u_char mode; /* cache control byte */
186 u_char threshold; /* prefetch threshold */
187 u_char max_prefetch; /* maximum prefetch size */
188 u_char max_multiplier; /* maximum prefetch multiplier */
189 u_char min_prefetch; /* minimum prefetch size */
190 u_char min_multiplier; /* minimum prefetch multiplier */
191 u_char _r2[8];
192 };
193
194 /*
195 * CDROM IOCTL structures
196 */
197
198 struct cdrom_msf
199 {
200 u_char cdmsf_min0; /* start minute */
201 u_char cdmsf_sec0; /* start second */
202 u_char cdmsf_frame0; /* start frame */
203 u_char cdmsf_min1; /* end minute */
204 u_char cdmsf_sec1; /* end second */
205 u_char cdmsf_frame1; /* end frame */
206 };
207
208 struct cdrom_ti
209 {
210 u_char cdti_trk0; /* start track */
211 u_char cdti_ind0; /* start index */
212 u_char cdti_trk1; /* end track */
213 u_char cdti_ind1; /* end index */
214 };
215
216 struct cdrom_tochdr
217 {
218 u_char cdth_trk0; /* start track */
219 u_char cdth_trk1; /* end track */
220 };
221
222 struct cdrom_tocentry
223 {
224 u_char cdte_track;
225 u_char cdte_adr :4;
226 u_char cdte_ctrl :4;
227 u_char cdte_format;
228 union
229 {
230 struct
231 {
232 u_char minute;
233 u_char second;
234 u_char frame;
235 } msf;
236 int lba;
237 } cdte_addr;
238 u_char cdte_datamode;
239 };
240
241 /*
242 * CD-ROM address types (cdrom_tocentry.cdte_format)
243 */
244 #define CDROM_LBA 0x01 /* "logical block": first frame is #0 */
245 #define CDROM_MSF 0x02 /* "minute-second-frame": binary, not bcd here! */
246
247 /*
248 * bit to tell whether track is data or audio
249 */
250
251 #define CDROM_DATA_TRACK 0x04
252
253 /*
254 * The leadout track is always 0xAA, regardless of # of tracks on disc
255 */
256
257 #define CDROM_LEADOUT 0xAA
258
259 struct cdrom_subchnl
260 {
261 u_char cdsc_format;
262 u_char cdsc_audiostatus;
263 u_char cdsc_adr: 4;
264 u_char cdsc_ctrl: 4;
265 u_char cdsc_trk;
266 u_char cdsc_ind;
267 union
268 {
269 struct
270 {
271 u_char minute;
272 u_char second;
273 u_char frame;
274 } msf;
275 int lba;
276 } cdsc_absaddr;
277 union
278 {
279 struct
280 {
281 u_char minute;
282 u_char second;
283 u_char frame;
284 } msf;
285 int lba;
286 } cdsc_reladdr;
287 };
288
289 /*
290 * return value from READ SUBCHANNEL DATA
291 */
292
293 #define CDROM_AUDIO_INVALID 0x00 /* audio status not supported */
294 #define CDROM_AUDIO_PLAY 0x11 /* audio play operation in progress */
295 #define CDROM_AUDIO_PAUSED 0x12 /* audio play operation paused */
296 #define CDROM_AUDIO_COMPLETED 0x13 /* audio play successfully completed */
297 #define CDROM_AUDIO_ERROR 0x14 /* audio play stopped due to error */
298 #define CDROM_AUDIO_NO_STATUS 0x15 /* no current audio status to return */
299
300 struct cdrom_volctrl
301 {
302 u_char channel0;
303 u_char channel1;
304 u_char channel2;
305 u_char channel3;
306 };
307
308 struct cdrom_read
309 {
310 int cdread_lba;
311 caddr_t cdread_bufaddr;
312 int cdread_buflen;
313 };
314
315 /*
316 * preliminary extensions for transferring audio frames
317 * currently used by sbpcd.c
318 * (still may change if other drivers will use it, too):
319 */
320 struct cdrom_read_audio
321 {
322 union
323 {
324 struct
325 {
326 u_char minute;
327 u_char second;
328 u_char frame;
329 } msf;
330 int lba;
331 } addr; /* frame address */
332 u_char addr_format; /* CDROM_LBA or CDROM_MSF */
333 int nframes; /* number of 2352-byte-frames to read at once, limited by the drivers */
334 u_char *buf; /* frame buffer (size: nframes*2352 bytes) */
335 };
336
337 #ifdef FIVETWELVE
338 #define CDROM_MODE1_SIZE 512
339 #else
340 #define CDROM_MODE1_SIZE 2048
341 #endif FIVETWELVE
342 #define CDROM_MODE2_SIZE 2336
343
344 /*
345 * CD-ROM IOCTL commands
346 */
347
348 #define CDROMPAUSE 0x5301 /* pause */
349 #define CDROMRESUME 0x5302 /* resume */
350
351 #define CDROMPLAYMSF 0x5303 /* (struct cdrom_msf) */
352 /* SCMD_PLAY_AUDIO_MSF */
353
354 #define CDROMPLAYTRKIND 0x5304 /* (struct cdrom_ti) */
355 /* SCMD_PLAY_AUDIO_TI */
356
357 #define CDROMREADTOCHDR 0x5305 /* (struct cdrom_tochdr) */
358 /* read the TOC header */
359 #define CDROMREADTOCENTRY 0x5306 /* (struct cdrom_tocentry) */
360 /* read a TOC entry */
361
362 #define CDROMSTOP 0x5307 /* stop the drive motor */
363 #define CDROMSTART 0x5308 /* turn the motor on */
364
365 #define CDROMEJECT 0x5309 /* eject CD-ROM media */
366
367 #define CDROMVOLCTRL 0x530a /* (struct cdrom_volctrl) */
368 /* volume control */
369
370 #define CDROMSUBCHNL 0x530b /* (struct cdrom_subchnl) */
371 /* read Q sub-channel data */
372
373 #define CDROMREADMODE2 0x530c /* (struct cdrom_read) */
374 /* read type-2 data (not suppt) */
375
376 #define CDROMREADMODE1 0x530d /* (struct cdrom_read) */
377 /* read type-1 data */
378 /*
379 * preliminary extension for transferring audio frames
380 * currently used by sbpcd.c
381 * (still may change if other drivers will use it, too):
382 */
383 #define CDROMREADAUDIO 0x530e /* (struct cdrom_read_audio) */
384
385 #endif _LINUX_CDROM_H
386
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