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1 /****************************************************************************************
2 * *
3 * SCSI header library for linux *
4 * (C) 1992 David Giller rafetmad@oxy.edu *
5 * *
6 * <linux/cdrom.h> -- CD-ROM IOCTLs and structs *
7 * *
8 ****************************************************************************************/
9
10 #ifndef _LINUX_CDROM_H
11 #define _LINUX_CDROM_H
12
13 /*
14 *
15 * For IOCTL calls, we will commandeer byte 0x53, or 'S'.
16 *
17 */
18
19 /*
20 * These are flags for the SCMD_DOORLOCK command. They really should be defined
21 * somewhere more standard.
22 */
23
24 #define SR_REMOVAL_PREVENT 1
25 #define SR_REMOVAL_ALLOW 0
26
27 /*
28 * CD-ROM-specific SCSI command opcodes
29 */
30
31 /*
32 * Group 2 (10-byte). All of these are called 'optional' by SCSI-II.
33 */
34
35 #define SCMD_READ_TOC 0x43 /* read table of contents */
36 #define SCMD_PLAYAUDIO_MSF 0x47 /* play data at time offset */
37 #define SCMD_PLAYAUDIO_TI 0x48 /* play data at track/index */
38 #define SCMD_PAUSE_RESUME 0x4B /* pause/resume audio */
39 #define SCMD_READ_SUBCHANNEL 0x42 /* read SC info on playing disc */
40 #define SCMD_PLAYAUDIO10 0x45 /* play data at logical block */
41 #define SCMD_READ_HEADER 0x44 /* read TOC header */
42
43 /*
44 * Group 5
45 */
46
47 #define SCMD_PLAYAUDIO12 0xA5 /* play data at logical block */
48 #define SCMD_PLAYTRACK_REL12 0xA9 /* play track at relative offset*/
49
50 /*
51 * Group 6 Commands
52 */
53
54 #define SCMD_CD_PLAYBACK_CONTROL 0xC9 /* Sony vendor-specific audio */
55 #define SCMD_CD_PLAYBACK_STATUS 0xC4 /* control opcodes. info please!*/
56
57 /*
58 * CD-ROM capacity structure.
59 */
60
61 struct scsi_capacity
62 {
63 u_long capacity;
64 u_long lbasize;
65 };
66
67 /*
68 * CD-ROM MODE_SENSE/MODE_SELECT parameters
69 */
70
71 #define ERR_RECOVERY_PARMS 0x01
72 #define DISCO_RECO_PARMS 0x02
73 #define FORMAT_PARMS 0x03
74 #define GEOMETRY_PARMS 0x04
75 #define CERTIFICATION_PARMS 0x06
76 #define CACHE_PARMS 0x38
77
78 /*
79 * standard mode-select header prepended to all mode-select commands
80 */
81
82 struct ccs_modesel_head
83 {
84 u_char _r1; /* reserved */
85 u_char medium; /* device-specific medium type */
86 u_char _r2; /* reserved */
87 u_char block_desc_length; /* block descriptor length */
88 u_char density; /* device-specific density code */
89 u_char number_blocks_hi; /* number of blocks in this block desc */
90 u_char number_blocks_med;
91 u_char number_blocks_lo;
92 u_char _r3;
93 u_char block_length_hi; /* block length for blocks in this desc */
94 u_short block_length;
95 };
96
97 /*
98 * error recovery parameters
99 */
100
101 struct ccs_err_recovery
102 {
103 u_char _r1 : 2; /* reserved */
104 u_char page_code : 6; /* page code */
105 u_char page_length; /* page length */
106 u_char awre : 1; /* auto write realloc enabled */
107 u_char arre : 1; /* auto read realloc enabled */
108 u_char tb : 1; /* transfer block */
109 u_char rc : 1; /* read continuous */
110 u_char eec : 1; /* enable early correction */
111 u_char per : 1; /* post error */
112 u_char dte : 1; /* disable transfer on error */
113 u_char dcr : 1; /* disable correction */
114 u_char retry_count; /* error retry count */
115 u_char correction_span; /* largest recov. to be attempted, bits */
116 u_char head_offset_count; /* head offset (2's C) for each retry */
117 u_char strobe_offset_count; /* data strobe " */
118 u_char recovery_time_limit; /* time limit on recovery attempts */
119 };
120
121 /*
122 * disco/reco parameters
123 */
124
125 struct ccs_disco_reco
126 {
127 u_char _r1 : 2; /* reserved */
128 u_char page_code : 6; /* page code */
129 u_char page_length; /* page length */
130 u_char buffer_full_ratio; /* write buffer reconnect threshold */
131 u_char buffer_empty_ratio; /* read " */
132 u_short bus_inactivity_limit; /* limit on bus inactivity time */
133 u_short disconnect_time_limit; /* minimum disconnect time */
134 u_short connect_time_limit; /* minimum connect time */
135 u_short _r2; /* reserved */
136 };
137
138 /*
139 * drive geometry parameters
140 */
141
142 struct ccs_geometry
143 {
144 u_char _r1 : 2; /* reserved */
145 u_char page_code : 6; /* page code */
146 u_char page_length; /* page length */
147 u_char cyl_ub; /* #cyls */
148 u_char cyl_mb;
149 u_char cyl_lb;
150 u_char heads; /* #heads */
151 u_char precomp_cyl_ub; /* precomp start */
152 u_char precomp_cyl_mb;
153 u_char precomp_cyl_lb;
154 u_char current_cyl_ub; /* reduced current start */
155 u_char current_cyl_mb;
156 u_char current_cyl_lb;
157 u_short step_rate; /* stepping motor rate */
158 u_char landing_cyl_ub; /* landing zone */
159 u_char landing_cyl_mb;
160 u_char landing_cyl_lb;
161 u_char _r2;
162 u_char _r3;
163 u_char _r4;
164 };
165
166 /*
167 * cache parameters
168 */
169
170 struct ccs_cache
171 {
172 u_char _r1 : 2; /* reserved */
173 u_char page_code : 6; /* page code */
174 u_char page_length; /* page length */
175 u_char mode; /* cache control byte */
176 u_char threshold; /* prefetch threshold */
177 u_char max_prefetch; /* maximum prefetch size */
178 u_char max_multiplier; /* maximum prefetch multiplier */
179 u_char min_prefetch; /* minimum prefetch size */
180 u_char min_multiplier; /* minimum prefetch multiplier */
181 u_char _r2[8];
182 };
183
184 /*
185 * CDROM IOCTL structures
186 */
187
188 struct cdrom_msf
189 {
190 u_char cdmsf_min0; /* start minute */
191 u_char cdmsf_sec0; /* start second */
192 u_char cdmsf_frame0; /* start frame */
193 u_char cdmsf_min1; /* end minute */
194 u_char cdmsf_sec1; /* end second */
195 u_char cdmsf_frame1; /* end frame */
196 };
197
198 struct cdrom_ti
199 {
200 u_char cdti_trk0; /* start track */
201 u_char cdti_ind0; /* start index */
202 u_char cdti_trk1; /* end track */
203 u_char cdti_ind1; /* end index */
204 };
205
206 struct cdrom_tochdr
207 {
208 u_char cdth_trk0; /* start track */
209 u_char cdth_trk1; /* end track */
210 };
211
212 struct cdrom_tocentry
213 {
214 u_char cdte_track;
215 u_char cdte_adr :4;
216 u_char cdte_ctrl :4;
217 u_char cdte_format;
218 union
219 {
220 struct
221 {
222 u_char minute;
223 u_char second;
224 u_char frame;
225 } msf;
226 int lba;
227 } cdte_addr;
228 u_char cdte_datamode;
229 };
230
231 /*
232 * CD-ROM address types (cdrom_tocentry.cdte_format)
233 */
234
235 #define CDROM_LBA 0x01
236 #define CDROM_MSF 0x02
237
238 /*
239 * bit to tell whether track is data or audio
240 */
241
242 #define CDROM_DATA_TRACK 0x04
243
244 /*
245 * The leadout track is always 0xAA, regardless of # of tracks on disc
246 */
247
248 #define CDROM_LEADOUT 0xAA
249
250 struct cdrom_subchnl
251 {
252 u_char cdsc_format;
253 u_char cdsc_audiostatus;
254 u_char cdsc_adr: 4;
255 u_char cdsc_ctrl: 4;
256 u_char cdsc_trk;
257 u_char cdsc_ind;
258 union
259 {
260 struct
261 {
262 u_char minute;
263 u_char second;
264 u_char frame;
265 } msf;
266 int lba;
267 } cdsc_absaddr;
268 union
269 {
270 struct
271 {
272 u_char minute;
273 u_char second;
274 u_char frame;
275 } msf;
276 int lba;
277 } cdsc_reladdr;
278 };
279
280 /*
281 * return value from READ SUBCHANNEL DATA
282 */
283
284 #define CDROM_AUDIO_INVALID 0x00 /* audio status not supported */
285 #define CDROM_AUDIO_PLAY 0x11 /* audio play operation in progress */
286 #define CDROM_AUDIO_PAUSED 0x12 /* audio play operation paused */
287 #define CDROM_AUDIO_COMPLETED 0x13 /* audio play successfully completed */
288 #define CDROM_AUDIO_ERROR 0x14 /* audio play stopped due to error */
289 #define CDROM_AUDIO_NO_STATUS 0x15 /* no current audio status to return */
290
291 struct cdrom_volctrl
292 {
293 u_char channel0;
294 u_char channel1;
295 u_char channel2;
296 u_char channel3;
297 };
298
299 struct cdrom_read
300 {
301 int cdread_lba;
302 caddr_t cdread_bufaddr;
303 int cdread_buflen;
304 };
305
306 #ifdef FIVETWELVE
307 #define CDROM_MODE1_SIZE 512
308 #else
309 #define CDROM_MODE1_SIZE 2048
310 #endif FIVETWELVE
311 #define CDROM_MODE2_SIZE 2336
312
313 /*
314 * CD-ROM IOCTL commands
315 */
316
317 #define CDROMPAUSE 0x5301 /* pause */
318 #define CDROMRESUME 0x5302 /* resume */
319
320 #define CDROMPLAYMSF 0x5303 /* (stuct cdrom_msf) */
321 /* SCMD_PLAY_AUDIO_MSF */
322
323 #define CDROMPLAYTRKIND 0x5304 /* (struct cdrom_ti) */
324 /* SCMD_PLAY_AUDIO_TI */
325
326 #define CDROMREADTOCHDR 0x5305 /* (struct cdrom_tochdr) */
327 /* read the TOC header */
328 #define CDROMREADTOCENTRY 0x5306 /* (struct cdrom_tocentry) */
329 /* read a TOC entry */
330
331 #define CDROMSTOP 0x5307 /* stop the drive motor */
332 #define CDROMSTART 0x5308 /* turn the motor on */
333
334 #define CDROMEJECT 0x5309 /* eject CD-ROM media */
335
336 #define CDROMVOLCTRL 0x530a /* (struct cdrom_volctrl) */
337 /* vlume control */
338
339 #define CDROMSUBCHNL 0x530b /* (struct cdrom_subchnl) */
340 /* read sub-channel data */
341
342 #define CDROMREADMODE2 0x530c /* (struct cdrom_read) */
343 /* read type-2 data (not suppt) */
344
345 #define CDROMREADMODE1 0x530d /* (struct cdrom_read) */
346 /* read type-1 data */
347
348 /*
349 * Linux-specific CD-ROM ioctls for convenience and ISO-9660 support
350 */
351
352 #define CDROMDOORLOCK 0x5380 /* lock the eject mechanism */
353 #define CDROMDOORUNLOCK 0x5381 /* unlock the mechanism */
354
355 #endif _LINUX_CDROM_H
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