1 /*
2  * -- <linux/cdrom.h>
3  * General header file for linux CD-ROM drivers
4  * Copyright (C) 1992         David Giller, rafetmad@oxy.edu
5  *               1994, 1995   Eberhard Mönkeberg, emoenke@gwdg.de
6  *               1996         David van Leeuwen, david@tm.tno.nl
7  *               1997, 1998   Erik Andersen, andersee@debian.org
8  *               1998-2002    Jens Axboe, axboe@suse.de
9  */
10 
11 #ifndef	_LINUX_CDROM_H
12 #define	_LINUX_CDROM_H
13 
14 #include <linux/types.h>
15 #include <asm/byteorder.h>
16 
17 /*******************************************************
18  * As of Linux 2.1.x, all Linux CD-ROM application programs will use this
19  * (and only this) include file.  It is my hope to provide Linux with
20  * a uniform interface between software accessing CD-ROMs and the various
21  * device drivers that actually talk to the drives.  There may still be
22  * 23 different kinds of strange CD-ROM drives, but at least there will
23  * now be one, and only one, Linux CD-ROM interface.
24  *
25  * Additionally, as of Linux 2.1.x, all Linux application programs
26  * should use the O_NONBLOCK option when opening a CD-ROM device
27  * for subsequent ioctl commands.  This allows for neat system errors
28  * like "No medium found" or "Wrong medium type" upon attempting to
29  * mount or play an empty slot, mount an audio disc, or play a data disc.
30  * Generally, changing an application program to support O_NONBLOCK
31  * is as easy as the following:
32  *       -    drive = open("/dev/cdrom", O_RDONLY);
33  *       +    drive = open("/dev/cdrom", O_RDONLY | O_NONBLOCK);
34  * It is worth the small change.
35  *
36  *  Patches for many common CD programs (provided by David A. van Leeuwen)
37  *  can be found at:  ftp://ftp.gwdg.de/pub/linux/cdrom/drivers/cm206/
38  *
39  *******************************************************/
40 
41 /* When a driver supports a certain function, but the cdrom drive we are
42  * using doesn't, we will return the error EDRIVE_CANT_DO_THIS.  We will
43  * borrow the "Operation not supported" error from the network folks to
44  * accomplish this.  Maybe someday we will get a more targeted error code,
45  * but this will do for now... */
46 #define EDRIVE_CANT_DO_THIS  EOPNOTSUPP
47 
48 /*******************************************************
49  * The CD-ROM IOCTL commands  -- these should be supported by
50  * all the various cdrom drivers.  For the CD-ROM ioctls, we
51  * will commandeer byte 0x53, or 'S'.
52  *******************************************************/
53 #define CDROMPAUSE		0x5301 /* Pause Audio Operation */
54 #define CDROMRESUME		0x5302 /* Resume paused Audio Operation */
55 #define CDROMPLAYMSF		0x5303 /* Play Audio MSF (struct cdrom_msf) */
56 #define CDROMPLAYTRKIND		0x5304 /* Play Audio Track/index
57                                            (struct cdrom_ti) */
58 #define CDROMREADTOCHDR		0x5305 /* Read TOC header
59                                            (struct cdrom_tochdr) */
60 #define CDROMREADTOCENTRY	0x5306 /* Read TOC entry
61                                            (struct cdrom_tocentry) */
62 #define CDROMSTOP		0x5307 /* Stop the cdrom drive */
63 #define CDROMSTART		0x5308 /* Start the cdrom drive */
64 #define CDROMEJECT		0x5309 /* Ejects the cdrom media */
65 #define CDROMVOLCTRL		0x530a /* Control output volume
66                                            (struct cdrom_volctrl) */
67 #define CDROMSUBCHNL		0x530b /* Read subchannel data
68                                            (struct cdrom_subchnl) */
69 #define CDROMREADMODE2		0x530c /* Read CDROM mode 2 data (2336 Bytes)
70                                            (struct cdrom_read) */
71 #define CDROMREADMODE1		0x530d /* Read CDROM mode 1 data (2048 Bytes)
72                                            (struct cdrom_read) */
73 #define CDROMREADAUDIO		0x530e /* (struct cdrom_read_audio) */
74 #define CDROMEJECT_SW		0x530f /* enable(1)/disable(0) auto-ejecting */
75 #define CDROMMULTISESSION	0x5310 /* Obtain the start-of-last-session
76                                            address of multi session disks
77                                            (struct cdrom_multisession) */
78 #define CDROM_GET_MCN		0x5311 /* Obtain the "Universal Product Code"
79                                            if available (struct cdrom_mcn) */
80 #define CDROM_GET_UPC		CDROM_GET_MCN  /* This one is deprecated,
81                                           but here anyway for compatibility */
82 #define CDROMRESET		0x5312 /* hard-reset the drive */
83 #define CDROMVOLREAD		0x5313 /* Get the drive's volume setting
84                                           (struct cdrom_volctrl) */
85 #define CDROMREADRAW		0x5314	/* read data in raw mode (2352 Bytes)
86                                            (struct cdrom_read) */
87 /*
88  * These ioctls are used only used in aztcd.c and optcd.c
89  */
90 #define CDROMREADCOOKED		0x5315	/* read data in cooked mode */
91 #define CDROMSEEK		0x5316  /* seek msf address */
92 
93 /*
94  * This ioctl is only used by the scsi-cd driver.
95    It is for playing audio in logical block addressing mode.
96  */
97 #define CDROMPLAYBLK		0x5317	/* (struct cdrom_blk) */
98 
99 /*
100  * These ioctls are only used in optcd.c
101  */
102 #define CDROMREADALL		0x5318	/* read all 2646 bytes */
103 
104 /*
105  * These ioctls are (now) only in ide-cd.c for controlling
106  * drive spindown time.  They should be implemented in the
107  * Uniform driver, via generic packet commands, GPCMD_MODE_SELECT_10,
108  * GPCMD_MODE_SENSE_10 and the GPMODE_POWER_PAGE...
109  *  -Erik
110  */
111 #define CDROMGETSPINDOWN        0x531d
112 #define CDROMSETSPINDOWN        0x531e
113 
114 /*
115  * These ioctls are implemented through the uniform CD-ROM driver
116  * They _will_ be adopted by all CD-ROM drivers, when all the CD-ROM
117  * drivers are eventually ported to the uniform CD-ROM driver interface.
118  */
119 #define CDROMCLOSETRAY		0x5319	/* pendant of CDROMEJECT */
120 #define CDROM_SET_OPTIONS	0x5320  /* Set behavior options */
121 #define CDROM_CLEAR_OPTIONS	0x5321  /* Clear behavior options */
122 #define CDROM_SELECT_SPEED	0x5322  /* Set the CD-ROM speed */
123 #define CDROM_SELECT_DISC	0x5323  /* Select disc (for juke-boxes) */
124 #define CDROM_MEDIA_CHANGED	0x5325  /* Check is media changed  */
125 #define CDROM_DRIVE_STATUS	0x5326  /* Get tray position, etc. */
126 #define CDROM_DISC_STATUS	0x5327  /* Get disc type, etc. */
127 #define CDROM_CHANGER_NSLOTS    0x5328  /* Get number of slots */
128 #define CDROM_LOCKDOOR		0x5329  /* lock or unlock door */
129 #define CDROM_DEBUG		0x5330	/* Turn debug messages on/off */
130 #define CDROM_GET_CAPABILITY	0x5331	/* get capabilities */
131 
132 /* Note that scsi/scsi_ioctl.h also uses 0x5382 - 0x5386.
133  * Future CDROM ioctls should be kept below 0x537F
134  */
135 
136 /* This ioctl is only used by sbpcd at the moment */
137 #define CDROMAUDIOBUFSIZ        0x5382	/* set the audio buffer size */
138 					/* conflict with SCSI_IOCTL_GET_IDLUN */
139 
140 /* DVD-ROM Specific ioctls */
141 #define DVD_READ_STRUCT		0x5390  /* Read structure */
142 #define DVD_WRITE_STRUCT	0x5391  /* Write structure */
143 #define DVD_AUTH		0x5392  /* Authentication */
144 
145 #define CDROM_SEND_PACKET	0x5393	/* send a packet to the drive */
146 #define CDROM_NEXT_WRITABLE	0x5394	/* get next writable block */
147 #define CDROM_LAST_WRITTEN	0x5395	/* get last block written on disc */
148 
149 /*******************************************************
150  * CDROM IOCTL structures
151  *******************************************************/
152 
153 /* Address in MSF format */
154 struct cdrom_msf0
155 {
156 	__u8	minute;
157 	__u8	second;
158 	__u8	frame;
159 };
160 
161 /* Address in either MSF or logical format */
162 union cdrom_addr
163 {
164 	struct cdrom_msf0	msf;
165 	int			lba;
166 };
167 
168 /* This struct is used by the CDROMPLAYMSF ioctl */
169 struct cdrom_msf
170 {
171 	__u8	cdmsf_min0;	/* start minute */
172 	__u8	cdmsf_sec0;	/* start second */
173 	__u8	cdmsf_frame0;	/* start frame */
174 	__u8	cdmsf_min1;	/* end minute */
175 	__u8	cdmsf_sec1;	/* end second */
176 	__u8	cdmsf_frame1;	/* end frame */
177 };
178 
179 /* This struct is used by the CDROMPLAYTRKIND ioctl */
180 struct cdrom_ti
181 {
182 	__u8	cdti_trk0;	/* start track */
183 	__u8	cdti_ind0;	/* start index */
184 	__u8	cdti_trk1;	/* end track */
185 	__u8	cdti_ind1;	/* end index */
186 };
187 
188 /* This struct is used by the CDROMREADTOCHDR ioctl */
189 struct cdrom_tochdr
190 {
191 	__u8	cdth_trk0;	/* start track */
192 	__u8	cdth_trk1;	/* end track */
193 };
194 
195 /* This struct is used by the CDROMVOLCTRL and CDROMVOLREAD ioctls */
196 struct cdrom_volctrl
197 {
198 	__u8	channel0;
199 	__u8	channel1;
200 	__u8	channel2;
201 	__u8	channel3;
202 };
203 
204 /* This struct is used by the CDROMSUBCHNL ioctl */
205 struct cdrom_subchnl
206 {
207 	__u8	cdsc_format;
208 	__u8	cdsc_audiostatus;
209 	__u8	cdsc_adr:	4;
210 	__u8	cdsc_ctrl:	4;
211 	__u8	cdsc_trk;
212 	__u8	cdsc_ind;
213 	union cdrom_addr cdsc_absaddr;
214 	union cdrom_addr cdsc_reladdr;
215 };
216 
217 
218 /* This struct is used by the CDROMREADTOCENTRY ioctl */
219 struct cdrom_tocentry
220 {
221 	__u8	cdte_track;
222 	__u8	cdte_adr	:4;
223 	__u8	cdte_ctrl	:4;
224 	__u8	cdte_format;
225 	union cdrom_addr cdte_addr;
226 	__u8	cdte_datamode;
227 };
228 
229 /* This struct is used by the CDROMREADMODE1, and CDROMREADMODE2 ioctls */
230 struct cdrom_read
231 {
232 	int	cdread_lba;
233 	char 	*cdread_bufaddr;
234 	int	cdread_buflen;
235 };
236 
237 /* This struct is used by the CDROMREADAUDIO ioctl */
238 struct cdrom_read_audio
239 {
240 	union cdrom_addr addr; /* frame address */
241 	__u8 addr_format;      /* CDROM_LBA or CDROM_MSF */
242 	int nframes;           /* number of 2352-byte-frames to read at once */
243 	__u8 __user *buf;      /* frame buffer (size: nframes*2352 bytes) */
244 };
245 
246 /* This struct is used with the CDROMMULTISESSION ioctl */
247 struct cdrom_multisession
248 {
249 	union cdrom_addr addr; /* frame address: start-of-last-session
250 	                           (not the new "frame 16"!).  Only valid
251 	                           if the "xa_flag" is true. */
252 	__u8 xa_flag;        /* 1: "is XA disk" */
253 	__u8 addr_format;    /* CDROM_LBA or CDROM_MSF */
254 };
255 
256 /* This struct is used with the CDROM_GET_MCN ioctl.
257  * Very few audio discs actually have Universal Product Code information,
258  * which should just be the Medium Catalog Number on the box.  Also note
259  * that the way the codeis written on CD is _not_ uniform across all discs!
260  */
261 struct cdrom_mcn
262 {
263   __u8 medium_catalog_number[14]; /* 13 ASCII digits, null-terminated */
264 };
265 
266 /* This is used by the CDROMPLAYBLK ioctl */
267 struct cdrom_blk
268 {
269 	unsigned from;
270 	unsigned short len;
271 };
272 
273 #define CDROM_PACKET_SIZE	12
274 
275 #define CGC_DATA_UNKNOWN	0
276 #define CGC_DATA_WRITE		1
277 #define CGC_DATA_READ		2
278 #define CGC_DATA_NONE		3
279 
280 /* for CDROM_PACKET_COMMAND ioctl */
281 struct cdrom_generic_command
282 {
283 	unsigned char 		cmd[CDROM_PACKET_SIZE];
284 	unsigned char		__user *buffer;
285 	unsigned int 		buflen;
286 	int			stat;
287 	struct request_sense	__user *sense;
288 	unsigned char		data_direction;
289 	int			quiet;
290 	int			timeout;
291 	void			__user *reserved[1];	/* unused, actually */
292 };
293 
294 /*
295  * A CD-ROM physical sector size is 2048, 2052, 2056, 2324, 2332, 2336,
296  * 2340, or 2352 bytes long.
297 
298 *         Sector types of the standard CD-ROM data formats:
299  *
300  * format   sector type               user data size (bytes)
301  * -----------------------------------------------------------------------------
302  *   1     (Red Book)    CD-DA          2352    (CD_FRAMESIZE_RAW)
303  *   2     (Yellow Book) Mode1 Form1    2048    (CD_FRAMESIZE)
304  *   3     (Yellow Book) Mode1 Form2    2336    (CD_FRAMESIZE_RAW0)
305  *   4     (Green Book)  Mode2 Form1    2048    (CD_FRAMESIZE)
306  *   5     (Green Book)  Mode2 Form2    2328    (2324+4 spare bytes)
307  *
308  *
309  *       The layout of the standard CD-ROM data formats:
310  * -----------------------------------------------------------------------------
311  * - audio (red):                  | audio_sample_bytes |
312  *                                 |        2352        |
313  *
314  * - data (yellow, mode1):         | sync - head - data - EDC - zero - ECC |
315  *                                 |  12  -   4  - 2048 -  4  -   8  - 276 |
316  *
317  * - data (yellow, mode2):         | sync - head - data |
318  *                                 |  12  -   4  - 2336 |
319  *
320  * - XA data (green, mode2 form1): | sync - head - sub - data - EDC - ECC |
321  *                                 |  12  -   4  -  8  - 2048 -  4  - 276 |
322  *
323  * - XA data (green, mode2 form2): | sync - head - sub - data - Spare |
324  *                                 |  12  -   4  -  8  - 2324 -  4    |
325  *
326  */
327 
328 /* Some generally useful CD-ROM information -- mostly based on the above */
329 #define CD_MINS              74 /* max. minutes per CD, not really a limit */
330 #define CD_SECS              60 /* seconds per minute */
331 #define CD_FRAMES            75 /* frames per second */
332 #define CD_SYNC_SIZE         12 /* 12 sync bytes per raw data frame */
333 #define CD_MSF_OFFSET       150 /* MSF numbering offset of first frame */
334 #define CD_CHUNK_SIZE        24 /* lowest-level "data bytes piece" */
335 #define CD_NUM_OF_CHUNKS     98 /* chunks per frame */
336 #define CD_FRAMESIZE_SUB     96 /* subchannel data "frame" size */
337 #define CD_HEAD_SIZE          4 /* header (address) bytes per raw data frame */
338 #define CD_SUBHEAD_SIZE       8 /* subheader bytes per raw XA data frame */
339 #define CD_EDC_SIZE           4 /* bytes EDC per most raw data frame types */
340 #define CD_ZERO_SIZE          8 /* bytes zero per yellow book mode 1 frame */
341 #define CD_ECC_SIZE         276 /* bytes ECC per most raw data frame types */
342 #define CD_FRAMESIZE       2048 /* bytes per frame, "cooked" mode */
343 #define CD_FRAMESIZE_RAW   2352 /* bytes per frame, "raw" mode */
344 #define CD_FRAMESIZE_RAWER 2646 /* The maximum possible returned bytes */
345 /* most drives don't deliver everything: */
346 #define CD_FRAMESIZE_RAW1 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE) /*2340*/
347 #define CD_FRAMESIZE_RAW0 (CD_FRAMESIZE_RAW-CD_SYNC_SIZE-CD_HEAD_SIZE) /*2336*/
348 
349 #define CD_XA_HEAD        (CD_HEAD_SIZE+CD_SUBHEAD_SIZE) /* "before data" part of raw XA frame */
350 #define CD_XA_TAIL        (CD_EDC_SIZE+CD_ECC_SIZE) /* "after data" part of raw XA frame */
351 #define CD_XA_SYNC_HEAD   (CD_SYNC_SIZE+CD_XA_HEAD) /* sync bytes + header of XA frame */
352 
353 /* CD-ROM address types (cdrom_tocentry.cdte_format) */
354 #define	CDROM_LBA 0x01 /* "logical block": first frame is #0 */
355 #define	CDROM_MSF 0x02 /* "minute-second-frame": binary, not bcd here! */
356 
357 /* bit to tell whether track is data or audio (cdrom_tocentry.cdte_ctrl) */
358 #define	CDROM_DATA_TRACK	0x04
359 
360 /* The leadout track is always 0xAA, regardless of # of tracks on disc */
361 #define	CDROM_LEADOUT		0xAA
362 
363 /* audio states (from SCSI-2, but seen with other drives, too) */
364 #define	CDROM_AUDIO_INVALID	0x00	/* audio status not supported */
365 #define	CDROM_AUDIO_PLAY	0x11	/* audio play operation in progress */
366 #define	CDROM_AUDIO_PAUSED	0x12	/* audio play operation paused */
367 #define	CDROM_AUDIO_COMPLETED	0x13	/* audio play successfully completed */
368 #define	CDROM_AUDIO_ERROR	0x14	/* audio play stopped due to error */
369 #define	CDROM_AUDIO_NO_STATUS	0x15	/* no current audio status to return */
370 
371 /* capability flags used with the uniform CD-ROM driver */
372 #define CDC_CLOSE_TRAY		0x1     /* caddy systems _can't_ close */
373 #define CDC_OPEN_TRAY		0x2     /* but _can_ eject.  */
374 #define CDC_LOCK		0x4     /* disable manual eject */
375 #define CDC_SELECT_SPEED 	0x8     /* programmable speed */
376 #define CDC_SELECT_DISC		0x10    /* select disc from juke-box */
377 #define CDC_MULTI_SESSION 	0x20    /* read sessions>1 */
378 #define CDC_MCN			0x40    /* Medium Catalog Number */
379 #define CDC_MEDIA_CHANGED 	0x80    /* media changed */
380 #define CDC_PLAY_AUDIO		0x100   /* audio functions */
381 #define CDC_RESET               0x200   /* hard reset device */
382 #define CDC_DRIVE_STATUS        0x800   /* driver implements drive status */
383 #define CDC_GENERIC_PACKET	0x1000	/* driver implements generic packets */
384 #define CDC_CD_R		0x2000	/* drive is a CD-R */
385 #define CDC_CD_RW		0x4000	/* drive is a CD-RW */
386 #define CDC_DVD			0x8000	/* drive is a DVD */
387 #define CDC_DVD_R		0x10000	/* drive can write DVD-R */
388 #define CDC_DVD_RAM		0x20000	/* drive can write DVD-RAM */
389 #define CDC_MO_DRIVE		0x40000 /* drive is an MO device */
390 #define CDC_MRW			0x80000 /* drive can read MRW */
391 #define CDC_MRW_W		0x100000 /* drive can write MRW */
392 #define CDC_RAM			0x200000 /* ok to open for WRITE */
393 
394 /* drive status possibilities returned by CDROM_DRIVE_STATUS ioctl */
395 #define CDS_NO_INFO		0	/* if not implemented */
396 #define CDS_NO_DISC		1
397 #define CDS_TRAY_OPEN		2
398 #define CDS_DRIVE_NOT_READY	3
399 #define CDS_DISC_OK		4
400 
401 /* return values for the CDROM_DISC_STATUS ioctl */
402 /* can also return CDS_NO_[INFO|DISC], from above */
403 #define CDS_AUDIO		100
404 #define CDS_DATA_1		101
405 #define CDS_DATA_2		102
406 #define CDS_XA_2_1		103
407 #define CDS_XA_2_2		104
408 #define CDS_MIXED		105
409 
410 /* User-configurable behavior options for the uniform CD-ROM driver */
411 #define CDO_AUTO_CLOSE		0x1     /* close tray on first open() */
412 #define CDO_AUTO_EJECT		0x2     /* open tray on last release() */
413 #define CDO_USE_FFLAGS		0x4     /* use O_NONBLOCK information on open */
414 #define CDO_LOCK		0x8     /* lock tray on open files */
415 #define CDO_CHECK_TYPE		0x10    /* check type on open for data */
416 
417 /* Special codes used when specifying changer slots. */
418 #define CDSL_NONE       	(INT_MAX-1)
419 #define CDSL_CURRENT    	INT_MAX
420 
421 /* For partition based multisession access. IDE can handle 64 partitions
422  * per drive - SCSI CD-ROM's use minors to differentiate between the
423  * various drives, so we can't do multisessions the same way there.
424  * Use the -o session=x option to mount on them.
425  */
426 #define CD_PART_MAX		64
427 #define CD_PART_MASK		(CD_PART_MAX - 1)
428 
429 /*********************************************************************
430  * Generic Packet commands, MMC commands, and such
431  *********************************************************************/
432 
433  /* The generic packet command opcodes for CD/DVD Logical Units,
434  * From Table 57 of the SFF8090 Ver. 3 (Mt. Fuji) draft standard. */
435 #define GPCMD_BLANK			    0xa1
436 #define GPCMD_CLOSE_TRACK		    0x5b
437 #define GPCMD_FLUSH_CACHE		    0x35
438 #define GPCMD_FORMAT_UNIT		    0x04
439 #define GPCMD_GET_CONFIGURATION		    0x46
440 #define GPCMD_GET_EVENT_STATUS_NOTIFICATION 0x4a
441 #define GPCMD_GET_PERFORMANCE		    0xac
442 #define GPCMD_INQUIRY			    0x12
443 #define GPCMD_LOAD_UNLOAD		    0xa6
444 #define GPCMD_MECHANISM_STATUS		    0xbd
445 #define GPCMD_MODE_SELECT_10		    0x55
446 #define GPCMD_MODE_SENSE_10		    0x5a
447 #define GPCMD_PAUSE_RESUME		    0x4b
448 #define GPCMD_PLAY_AUDIO_10		    0x45
449 #define GPCMD_PLAY_AUDIO_MSF		    0x47
450 #define GPCMD_PLAY_AUDIO_TI		    0x48
451 #define GPCMD_PLAY_CD			    0xbc
452 #define GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL  0x1e
453 #define GPCMD_READ_10			    0x28
454 #define GPCMD_READ_12			    0xa8
455 #define GPCMD_READ_BUFFER		    0x3c
456 #define GPCMD_READ_BUFFER_CAPACITY	    0x5c
457 #define GPCMD_READ_CDVD_CAPACITY	    0x25
458 #define GPCMD_READ_CD			    0xbe
459 #define GPCMD_READ_CD_MSF		    0xb9
460 #define GPCMD_READ_DISC_INFO		    0x51
461 #define GPCMD_READ_DVD_STRUCTURE	    0xad
462 #define GPCMD_READ_FORMAT_CAPACITIES	    0x23
463 #define GPCMD_READ_HEADER		    0x44
464 #define GPCMD_READ_TRACK_RZONE_INFO	    0x52
465 #define GPCMD_READ_SUBCHANNEL		    0x42
466 #define GPCMD_READ_TOC_PMA_ATIP		    0x43
467 #define GPCMD_REPAIR_RZONE_TRACK	    0x58
468 #define GPCMD_REPORT_KEY		    0xa4
469 #define GPCMD_REQUEST_SENSE		    0x03
470 #define GPCMD_RESERVE_RZONE_TRACK	    0x53
471 #define GPCMD_SEND_CUE_SHEET		    0x5d
472 #define GPCMD_SCAN			    0xba
473 #define GPCMD_SEEK			    0x2b
474 #define GPCMD_SEND_DVD_STRUCTURE	    0xbf
475 #define GPCMD_SEND_EVENT		    0xa2
476 #define GPCMD_SEND_KEY			    0xa3
477 #define GPCMD_SEND_OPC			    0x54
478 #define GPCMD_SET_READ_AHEAD		    0xa7
479 #define GPCMD_SET_STREAMING		    0xb6
480 #define GPCMD_START_STOP_UNIT		    0x1b
481 #define GPCMD_STOP_PLAY_SCAN		    0x4e
482 #define GPCMD_TEST_UNIT_READY		    0x00
483 #define GPCMD_VERIFY_10			    0x2f
484 #define GPCMD_WRITE_10			    0x2a
485 #define GPCMD_WRITE_12			    0xaa
486 #define GPCMD_WRITE_AND_VERIFY_10	    0x2e
487 #define GPCMD_WRITE_BUFFER		    0x3b
488 /* This is listed as optional in ATAPI 2.6, but is (curiously)
489  * missing from Mt. Fuji, Table 57.  It _is_ mentioned in Mt. Fuji
490  * Table 377 as an MMC command for SCSi devices though...  Most ATAPI
491  * drives support it. */
492 #define GPCMD_SET_SPEED			    0xbb
493 /* This seems to be a SCSI specific CD-ROM opcode
494  * to play data at track/index */
495 #define GPCMD_PLAYAUDIO_TI		    0x48
496 /*
497  * From MS Media Status Notification Support Specification. For
498  * older drives only.
499  */
500 #define GPCMD_GET_MEDIA_STATUS		    0xda
501 
502 /* Mode page codes for mode sense/set */
503 #define GPMODE_VENDOR_PAGE		0x00
504 #define GPMODE_R_W_ERROR_PAGE		0x01
505 #define GPMODE_WRITE_PARMS_PAGE		0x05
506 #define GPMODE_WCACHING_PAGE		0x08
507 #define GPMODE_AUDIO_CTL_PAGE		0x0e
508 #define GPMODE_POWER_PAGE		0x1a
509 #define GPMODE_FAULT_FAIL_PAGE		0x1c
510 #define GPMODE_TO_PROTECT_PAGE		0x1d
511 #define GPMODE_CAPABILITIES_PAGE	0x2a
512 #define GPMODE_ALL_PAGES		0x3f
513 /* Not in Mt. Fuji, but in ATAPI 2.6 -- deprecated now in favor
514  * of MODE_SENSE_POWER_PAGE */
515 #define GPMODE_CDROM_PAGE		0x0d
516 
517 
518 
519 /* DVD struct types */
520 #define DVD_STRUCT_PHYSICAL	0x00
521 #define DVD_STRUCT_COPYRIGHT	0x01
522 #define DVD_STRUCT_DISCKEY	0x02
523 #define DVD_STRUCT_BCA		0x03
524 #define DVD_STRUCT_MANUFACT	0x04
525 
526 struct dvd_layer {
527 	__u8 book_version	: 4;
528 	__u8 book_type		: 4;
529 	__u8 min_rate		: 4;
530 	__u8 disc_size		: 4;
531 	__u8 layer_type		: 4;
532 	__u8 track_path		: 1;
533 	__u8 nlayers		: 2;
534 	__u8 track_density	: 4;
535 	__u8 linear_density	: 4;
536 	__u8 bca		: 1;
537 	__u32 start_sector;
538 	__u32 end_sector;
539 	__u32 end_sector_l0;
540 };
541 
542 #define DVD_LAYERS	4
543 
544 struct dvd_physical {
545 	__u8 type;
546 	__u8 layer_num;
547 	struct dvd_layer layer[DVD_LAYERS];
548 };
549 
550 struct dvd_copyright {
551 	__u8 type;
552 
553 	__u8 layer_num;
554 	__u8 cpst;
555 	__u8 rmi;
556 };
557 
558 struct dvd_disckey {
559 	__u8 type;
560 
561 	unsigned agid		: 2;
562 	__u8 value[2048];
563 };
564 
565 struct dvd_bca {
566 	__u8 type;
567 
568 	int len;
569 	__u8 value[188];
570 };
571 
572 struct dvd_manufact {
573 	__u8 type;
574 
575 	__u8 layer_num;
576 	int len;
577 	__u8 value[2048];
578 };
579 
580 typedef union {
581 	__u8 type;
582 
583 	struct dvd_physical	physical;
584 	struct dvd_copyright	copyright;
585 	struct dvd_disckey	disckey;
586 	struct dvd_bca		bca;
587 	struct dvd_manufact	manufact;
588 } dvd_struct;
589 
590 /*
591  * DVD authentication ioctl
592  */
593 
594 /* Authentication states */
595 #define DVD_LU_SEND_AGID	0
596 #define DVD_HOST_SEND_CHALLENGE	1
597 #define DVD_LU_SEND_KEY1	2
598 #define DVD_LU_SEND_CHALLENGE	3
599 #define DVD_HOST_SEND_KEY2	4
600 
601 /* Termination states */
602 #define DVD_AUTH_ESTABLISHED	5
603 #define DVD_AUTH_FAILURE	6
604 
605 /* Other functions */
606 #define DVD_LU_SEND_TITLE_KEY	7
607 #define DVD_LU_SEND_ASF		8
608 #define DVD_INVALIDATE_AGID	9
609 #define DVD_LU_SEND_RPC_STATE	10
610 #define DVD_HOST_SEND_RPC_STATE	11
611 
612 /* State data */
613 typedef __u8 dvd_key[5];		/* 40-bit value, MSB is first elem. */
614 typedef __u8 dvd_challenge[10];	/* 80-bit value, MSB is first elem. */
615 
616 struct dvd_lu_send_agid {
617 	__u8 type;
618 	unsigned agid		: 2;
619 };
620 
621 struct dvd_host_send_challenge {
622 	__u8 type;
623 	unsigned agid		: 2;
624 
625 	dvd_challenge chal;
626 };
627 
628 struct dvd_send_key {
629 	__u8 type;
630 	unsigned agid		: 2;
631 
632 	dvd_key key;
633 };
634 
635 struct dvd_lu_send_challenge {
636 	__u8 type;
637 	unsigned agid		: 2;
638 
639 	dvd_challenge chal;
640 };
641 
642 #define DVD_CPM_NO_COPYRIGHT	0
643 #define DVD_CPM_COPYRIGHTED	1
644 
645 #define DVD_CP_SEC_NONE		0
646 #define DVD_CP_SEC_EXIST	1
647 
648 #define DVD_CGMS_UNRESTRICTED	0
649 #define DVD_CGMS_SINGLE		2
650 #define DVD_CGMS_RESTRICTED	3
651 
652 struct dvd_lu_send_title_key {
653 	__u8 type;
654 	unsigned agid		: 2;
655 
656 	dvd_key title_key;
657 	int lba;
658 	unsigned cpm		: 1;
659 	unsigned cp_sec		: 1;
660 	unsigned cgms		: 2;
661 };
662 
663 struct dvd_lu_send_asf {
664 	__u8 type;
665 	unsigned agid		: 2;
666 
667 	unsigned asf		: 1;
668 };
669 
670 struct dvd_host_send_rpcstate {
671 	__u8 type;
672 	__u8 pdrc;
673 };
674 
675 struct dvd_lu_send_rpcstate {
676 	__u8 type		: 2;
677 	__u8 vra		: 3;
678 	__u8 ucca		: 3;
679 	__u8 region_mask;
680 	__u8 rpc_scheme;
681 };
682 
683 typedef union {
684 	__u8 type;
685 
686 	struct dvd_lu_send_agid		lsa;
687 	struct dvd_host_send_challenge	hsc;
688 	struct dvd_send_key		lsk;
689 	struct dvd_lu_send_challenge	lsc;
690 	struct dvd_send_key		hsk;
691 	struct dvd_lu_send_title_key	lstk;
692 	struct dvd_lu_send_asf		lsasf;
693 	struct dvd_host_send_rpcstate	hrpcs;
694 	struct dvd_lu_send_rpcstate	lrpcs;
695 } dvd_authinfo;
696 
697 struct request_sense {
698 #if defined(__BIG_ENDIAN_BITFIELD)
699 	__u8 valid		: 1;
700 	__u8 error_code		: 7;
701 #elif defined(__LITTLE_ENDIAN_BITFIELD)
702 	__u8 error_code		: 7;
703 	__u8 valid		: 1;
704 #endif
705 	__u8 segment_number;
706 #if defined(__BIG_ENDIAN_BITFIELD)
707 	__u8 reserved1		: 2;
708 	__u8 ili		: 1;
709 	__u8 reserved2		: 1;
710 	__u8 sense_key		: 4;
711 #elif defined(__LITTLE_ENDIAN_BITFIELD)
712 	__u8 sense_key		: 4;
713 	__u8 reserved2		: 1;
714 	__u8 ili		: 1;
715 	__u8 reserved1		: 2;
716 #endif
717 	__u8 information[4];
718 	__u8 add_sense_len;
719 	__u8 command_info[4];
720 	__u8 asc;
721 	__u8 ascq;
722 	__u8 fruc;
723 	__u8 sks[3];
724 	__u8 asb[46];
725 };
726 
727 /*
728  * feature profile
729  */
730 #define CDF_RWRT	0x0020	/* "Random Writable" */
731 #define CDF_HWDM	0x0024	/* "Hardware Defect Management" */
732 #define CDF_MRW 	0x0028
733 
734 /*
735  * media status bits
736  */
737 #define CDM_MRW_NOTMRW			0
738 #define CDM_MRW_BGFORMAT_INACTIVE	1
739 #define CDM_MRW_BGFORMAT_ACTIVE		2
740 #define CDM_MRW_BGFORMAT_COMPLETE	3
741 
742 /*
743  * mrw address spaces
744  */
745 #define MRW_LBA_DMA			0
746 #define MRW_LBA_GAA			1
747 
748 /*
749  * mrw mode pages (first is deprecated) -- probed at init time and
750  * cdi->mrw_mode_page is set
751  */
752 #define MRW_MODE_PC_PRE1		0x2c
753 #define MRW_MODE_PC			0x03
754 
755 struct mrw_feature_desc {
756 	__be16 feature_code;
757 #if defined(__BIG_ENDIAN_BITFIELD)
758 	__u8 reserved1		: 2;
759 	__u8 feature_version	: 4;
760 	__u8 persistent		: 1;
761 	__u8 curr		: 1;
762 #elif defined(__LITTLE_ENDIAN_BITFIELD)
763 	__u8 curr		: 1;
764 	__u8 persistent		: 1;
765 	__u8 feature_version	: 4;
766 	__u8 reserved1		: 2;
767 #endif
768 	__u8 add_len;
769 #if defined(__BIG_ENDIAN_BITFIELD)
770 	__u8 reserved2		: 7;
771 	__u8 write		: 1;
772 #elif defined(__LITTLE_ENDIAN_BITFIELD)
773 	__u8 write		: 1;
774 	__u8 reserved2		: 7;
775 #endif
776 	__u8 reserved3;
777 	__u8 reserved4;
778 	__u8 reserved5;
779 };
780 
781 /* cf. mmc4r02g.pdf 5.3.10 Random Writable Feature (0020h) pg 197 of 635 */
782 struct rwrt_feature_desc {
783 	__be16 feature_code;
784 #if defined(__BIG_ENDIAN_BITFIELD)
785 	__u8 reserved1		: 2;
786 	__u8 feature_version	: 4;
787 	__u8 persistent		: 1;
788 	__u8 curr		: 1;
789 #elif defined(__LITTLE_ENDIAN_BITFIELD)
790 	__u8 curr		: 1;
791 	__u8 persistent		: 1;
792 	__u8 feature_version	: 4;
793 	__u8 reserved1		: 2;
794 #endif
795 	__u8 add_len;
796 	__u32 last_lba;
797 	__u32 block_size;
798 	__u16 blocking;
799 #if defined(__BIG_ENDIAN_BITFIELD)
800 	__u8 reserved2		: 7;
801 	__u8 page_present	: 1;
802 #elif defined(__LITTLE_ENDIAN_BITFIELD)
803 	__u8 page_present	: 1;
804 	__u8 reserved2		: 7;
805 #endif
806 	__u8 reserved3;
807 };
808 
809 typedef struct {
810 	__be16 disc_information_length;
811 #if defined(__BIG_ENDIAN_BITFIELD)
812 	__u8 reserved1			: 3;
813         __u8 erasable			: 1;
814         __u8 border_status		: 2;
815         __u8 disc_status		: 2;
816 #elif defined(__LITTLE_ENDIAN_BITFIELD)
817         __u8 disc_status		: 2;
818         __u8 border_status		: 2;
819         __u8 erasable			: 1;
820 	__u8 reserved1			: 3;
821 #else
822 #error "Please fix <asm/byteorder.h>"
823 #endif
824 	__u8 n_first_track;
825 	__u8 n_sessions_lsb;
826 	__u8 first_track_lsb;
827 	__u8 last_track_lsb;
828 #if defined(__BIG_ENDIAN_BITFIELD)
829 	__u8 did_v			: 1;
830         __u8 dbc_v			: 1;
831         __u8 uru			: 1;
832         __u8 reserved2			: 2;
833 	__u8 dbit			: 1;
834 	__u8 mrw_status			: 2;
835 #elif defined(__LITTLE_ENDIAN_BITFIELD)
836 	__u8 mrw_status			: 2;
837 	__u8 dbit			: 1;
838         __u8 reserved2			: 2;
839         __u8 uru			: 1;
840         __u8 dbc_v			: 1;
841 	__u8 did_v			: 1;
842 #endif
843 	__u8 disc_type;
844 	__u8 n_sessions_msb;
845 	__u8 first_track_msb;
846 	__u8 last_track_msb;
847 	__u32 disc_id;
848 	__u32 lead_in;
849 	__u32 lead_out;
850 	__u8 disc_bar_code[8];
851 	__u8 reserved3;
852 	__u8 n_opc;
853 } disc_information;
854 
855 typedef struct {
856 	__be16 track_information_length;
857 	__u8 track_lsb;
858 	__u8 session_lsb;
859 	__u8 reserved1;
860 #if defined(__BIG_ENDIAN_BITFIELD)
861 	__u8 reserved2			: 2;
862         __u8 damage			: 1;
863         __u8 copy			: 1;
864         __u8 track_mode			: 4;
865 	__u8 rt				: 1;
866 	__u8 blank			: 1;
867 	__u8 packet			: 1;
868 	__u8 fp				: 1;
869 	__u8 data_mode			: 4;
870 	__u8 reserved3			: 6;
871 	__u8 lra_v			: 1;
872 	__u8 nwa_v			: 1;
873 #elif defined(__LITTLE_ENDIAN_BITFIELD)
874         __u8 track_mode			: 4;
875         __u8 copy			: 1;
876         __u8 damage			: 1;
877 	__u8 reserved2			: 2;
878 	__u8 data_mode			: 4;
879 	__u8 fp				: 1;
880 	__u8 packet			: 1;
881 	__u8 blank			: 1;
882 	__u8 rt				: 1;
883 	__u8 nwa_v			: 1;
884 	__u8 lra_v			: 1;
885 	__u8 reserved3			: 6;
886 #endif
887 	__be32 track_start;
888 	__be32 next_writable;
889 	__be32 free_blocks;
890 	__be32 fixed_packet_size;
891 	__be32 track_size;
892 	__be32 last_rec_address;
893 } track_information;
894 
895 struct feature_header {
896 	__u32 data_len;
897 	__u8 reserved1;
898 	__u8 reserved2;
899 	__u16 curr_profile;
900 };
901 
902 struct mode_page_header {
903 	__be16 mode_data_length;
904 	__u8 medium_type;
905 	__u8 reserved1;
906 	__u8 reserved2;
907 	__u8 reserved3;
908 	__be16 desc_length;
909 };
910 
911 #ifdef __KERNEL__
912 #include <linux/fs.h>		/* not really needed, later.. */
913 #include <linux/list.h>
914 
915 struct packet_command
916 {
917 	unsigned char 		cmd[CDROM_PACKET_SIZE];
918 	unsigned char 		*buffer;
919 	unsigned int 		buflen;
920 	int			stat;
921 	struct request_sense	*sense;
922 	unsigned char		data_direction;
923 	int			quiet;
924 	int			timeout;
925 	void			*reserved[1];
926 };
927 
928 /*
929  * _OLD will use PIO transfer on atapi devices, _BPC_* will use DMA
930  */
931 #define CDDA_OLD		0	/* old style */
932 #define CDDA_BPC_SINGLE		1	/* single frame block pc */
933 #define CDDA_BPC_FULL		2	/* multi frame block pc */
934 
935 /* Uniform cdrom data structures for cdrom.c */
936 struct cdrom_device_info {
937 	struct cdrom_device_ops  *ops;  /* link to device_ops */
938 	struct list_head list;		/* linked list of all device_info */
939 	struct gendisk *disk;		/* matching block layer disk */
940 	void *handle;		        /* driver-dependent data */
941 /* specifications */
942 	int mask;                       /* mask of capability: disables them */
943 	int speed;			/* maximum speed for reading data */
944 	int capacity;			/* number of discs in jukebox */
945 /* device-related storage */
946 	unsigned int options	: 30;	/* options flags */
947 	unsigned mc_flags	: 2;	/* media change buffer flags */
948 	unsigned int vfs_events;	/* cached events for vfs path */
949 	unsigned int ioctl_events;	/* cached events for ioctl path */
950     	int use_count;                  /* number of times device opened */
951     	char name[20];                  /* name of the device type */
952 /* per-device flags */
953         __u8 sanyo_slot		: 2;	/* Sanyo 3 CD changer support */
954         __u8 keeplocked		: 1;	/* CDROM_LOCKDOOR status */
955         __u8 reserved		: 5;	/* not used yet */
956 	int cdda_method;		/* see flags */
957 	__u8 last_sense;
958 	__u8 media_written;		/* dirty flag, DVD+RW bookkeeping */
959 	unsigned short mmc3_profile;	/* current MMC3 profile */
960 	int for_data;
961 	int (*exit)(struct cdrom_device_info *);
962 	int mrw_mode_page;
963 };
964 
965 struct cdrom_device_ops {
966 /* routines */
967 	int (*open) (struct cdrom_device_info *, int);
968 	void (*release) (struct cdrom_device_info *);
969 	int (*drive_status) (struct cdrom_device_info *, int);
970 	unsigned int (*check_events) (struct cdrom_device_info *cdi,
971 				      unsigned int clearing, int slot);
972 	int (*media_changed) (struct cdrom_device_info *, int);
973 	int (*tray_move) (struct cdrom_device_info *, int);
974 	int (*lock_door) (struct cdrom_device_info *, int);
975 	int (*select_speed) (struct cdrom_device_info *, int);
976 	int (*select_disc) (struct cdrom_device_info *, int);
977 	int (*get_last_session) (struct cdrom_device_info *,
978 				 struct cdrom_multisession *);
979 	int (*get_mcn) (struct cdrom_device_info *,
980 			struct cdrom_mcn *);
981 	/* hard reset device */
982 	int (*reset) (struct cdrom_device_info *);
983 	/* play stuff */
984 	int (*audio_ioctl) (struct cdrom_device_info *,unsigned int, void *);
985 
986 /* driver specifications */
987 	const int capability;   /* capability flags */
988 	int n_minors;           /* number of active minor devices */
989 	/* handle uniform packets for scsi type devices (scsi,atapi) */
990 	int (*generic_packet) (struct cdrom_device_info *,
991 			       struct packet_command *);
992 };
993 
994 /* the general block_device operations structure: */
995 extern int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev,
996 			fmode_t mode);
997 extern void cdrom_release(struct cdrom_device_info *cdi, fmode_t mode);
998 extern int cdrom_ioctl(struct cdrom_device_info *cdi, struct block_device *bdev,
999 		       fmode_t mode, unsigned int cmd, unsigned long arg);
1000 extern unsigned int cdrom_check_events(struct cdrom_device_info *cdi,
1001 				       unsigned int clearing);
1002 extern int cdrom_media_changed(struct cdrom_device_info *);
1003 
1004 extern int register_cdrom(struct cdrom_device_info *cdi);
1005 extern void unregister_cdrom(struct cdrom_device_info *cdi);
1006 
1007 typedef struct {
1008     int data;
1009     int audio;
1010     int cdi;
1011     int xa;
1012     long error;
1013 } tracktype;
1014 
1015 extern int cdrom_get_last_written(struct cdrom_device_info *cdi, long *last_written);
1016 extern int cdrom_number_of_slots(struct cdrom_device_info *cdi);
1017 extern int cdrom_mode_select(struct cdrom_device_info *cdi,
1018 			     struct packet_command *cgc);
1019 extern int cdrom_mode_sense(struct cdrom_device_info *cdi,
1020 			    struct packet_command *cgc,
1021 			    int page_code, int page_control);
1022 extern void init_cdrom_command(struct packet_command *cgc,
1023 			       void *buffer, int len, int type);
1024 
1025 /* The SCSI spec says there could be 256 slots. */
1026 #define CDROM_MAX_SLOTS	256
1027 
1028 struct cdrom_mechstat_header {
1029 #if defined(__BIG_ENDIAN_BITFIELD)
1030 	__u8 fault         : 1;
1031 	__u8 changer_state : 2;
1032 	__u8 curslot       : 5;
1033 	__u8 mech_state    : 3;
1034 	__u8 door_open     : 1;
1035 	__u8 reserved1     : 4;
1036 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1037 	__u8 curslot       : 5;
1038 	__u8 changer_state : 2;
1039 	__u8 fault         : 1;
1040 	__u8 reserved1     : 4;
1041 	__u8 door_open     : 1;
1042 	__u8 mech_state    : 3;
1043 #endif
1044 	__u8     curlba[3];
1045 	__u8     nslots;
1046 	__u16 slot_tablelen;
1047 };
1048 
1049 struct cdrom_slot {
1050 #if defined(__BIG_ENDIAN_BITFIELD)
1051 	__u8 disc_present : 1;
1052 	__u8 reserved1    : 6;
1053 	__u8 change       : 1;
1054 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1055 	__u8 change       : 1;
1056 	__u8 reserved1    : 6;
1057 	__u8 disc_present : 1;
1058 #endif
1059 	__u8 reserved2[3];
1060 };
1061 
1062 struct cdrom_changer_info {
1063 	struct cdrom_mechstat_header hdr;
1064 	struct cdrom_slot slots[CDROM_MAX_SLOTS];
1065 };
1066 
1067 typedef enum {
1068 	mechtype_caddy = 0,
1069 	mechtype_tray  = 1,
1070 	mechtype_popup = 2,
1071 	mechtype_individual_changer = 4,
1072 	mechtype_cartridge_changer  = 5
1073 } mechtype_t;
1074 
1075 typedef struct {
1076 #if defined(__BIG_ENDIAN_BITFIELD)
1077 	__u8 ps			: 1;
1078 	__u8 reserved1		: 1;
1079 	__u8 page_code		: 6;
1080         __u8 page_length;
1081 	__u8 reserved2		: 1;
1082 	__u8 bufe		: 1;
1083 	__u8 ls_v		: 1;
1084 	__u8 test_write		: 1;
1085         __u8 write_type		: 4;
1086 	__u8 multi_session	: 2; /* or border, DVD */
1087 	__u8 fp			: 1;
1088 	__u8 copy		: 1;
1089 	__u8 track_mode		: 4;
1090 	__u8 reserved3		: 4;
1091 	__u8 data_block_type	: 4;
1092 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1093 	__u8 page_code		: 6;
1094 	__u8 reserved1		: 1;
1095 	__u8 ps			: 1;
1096         __u8 page_length;
1097         __u8 write_type		: 4;
1098 	__u8 test_write		: 1;
1099 	__u8 ls_v		: 1;
1100 	__u8 bufe		: 1;
1101 	__u8 reserved2		: 1;
1102 	__u8 track_mode		: 4;
1103 	__u8 copy		: 1;
1104 	__u8 fp			: 1;
1105 	__u8 multi_session	: 2; /* or border, DVD */
1106 	__u8 data_block_type	: 4;
1107 	__u8 reserved3		: 4;
1108 #endif
1109 	__u8 link_size;
1110 	__u8 reserved4;
1111 #if defined(__BIG_ENDIAN_BITFIELD)
1112 	__u8 reserved5		: 2;
1113 	__u8 app_code		: 6;
1114 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1115 	__u8 app_code		: 6;
1116 	__u8 reserved5		: 2;
1117 #endif
1118 	__u8 session_format;
1119 	__u8 reserved6;
1120 	__be32 packet_size;
1121 	__u16 audio_pause;
1122 	__u8 mcn[16];
1123 	__u8 isrc[16];
1124 	__u8 subhdr0;
1125 	__u8 subhdr1;
1126 	__u8 subhdr2;
1127 	__u8 subhdr3;
1128 } __attribute__((packed)) write_param_page;
1129 
1130 struct modesel_head
1131 {
1132 	__u8	reserved1;
1133 	__u8	medium;
1134 	__u8	reserved2;
1135 	__u8	block_desc_length;
1136 	__u8	density;
1137 	__u8	number_of_blocks_hi;
1138 	__u8	number_of_blocks_med;
1139 	__u8	number_of_blocks_lo;
1140 	__u8	reserved3;
1141 	__u8	block_length_hi;
1142 	__u8	block_length_med;
1143 	__u8	block_length_lo;
1144 };
1145 
1146 typedef struct {
1147 	__u16 report_key_length;
1148 	__u8 reserved1;
1149 	__u8 reserved2;
1150 #if defined(__BIG_ENDIAN_BITFIELD)
1151 	__u8 type_code			: 2;
1152 	__u8 vra			: 3;
1153 	__u8 ucca			: 3;
1154 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1155 	__u8 ucca			: 3;
1156 	__u8 vra			: 3;
1157 	__u8 type_code			: 2;
1158 #endif
1159 	__u8 region_mask;
1160 	__u8 rpc_scheme;
1161 	__u8 reserved3;
1162 } rpc_state_t;
1163 
1164 struct event_header {
1165 	__be16 data_len;
1166 #if defined(__BIG_ENDIAN_BITFIELD)
1167 	__u8 nea		: 1;
1168 	__u8 reserved1		: 4;
1169 	__u8 notification_class	: 3;
1170 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1171 	__u8 notification_class	: 3;
1172 	__u8 reserved1		: 4;
1173 	__u8 nea		: 1;
1174 #endif
1175 	__u8 supp_event_class;
1176 };
1177 
1178 struct media_event_desc {
1179 #if defined(__BIG_ENDIAN_BITFIELD)
1180 	__u8 reserved1		: 4;
1181 	__u8 media_event_code	: 4;
1182 	__u8 reserved2		: 6;
1183 	__u8 media_present	: 1;
1184 	__u8 door_open		: 1;
1185 #elif defined(__LITTLE_ENDIAN_BITFIELD)
1186 	__u8 media_event_code	: 4;
1187 	__u8 reserved1		: 4;
1188 	__u8 door_open		: 1;
1189 	__u8 media_present	: 1;
1190 	__u8 reserved2		: 6;
1191 #endif
1192 	__u8 start_slot;
1193 	__u8 end_slot;
1194 };
1195 
1196 extern int cdrom_get_media_event(struct cdrom_device_info *cdi, struct media_event_desc *med);
1197 
lba_to_msf(int lba,u8 * m,u8 * s,u8 * f)1198 static inline void lba_to_msf(int lba, u8 *m, u8 *s, u8 *f)
1199 {
1200 	lba += CD_MSF_OFFSET;
1201 	lba &= 0xffffff;  /* negative lbas use only 24 bits */
1202 	*m = lba / (CD_SECS * CD_FRAMES);
1203 	lba %= (CD_SECS * CD_FRAMES);
1204 	*s = lba / CD_FRAMES;
1205 	*f = lba % CD_FRAMES;
1206 }
1207 
msf_to_lba(u8 m,u8 s,u8 f)1208 static inline int msf_to_lba(u8 m, u8 s, u8 f)
1209 {
1210 	return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET;
1211 }
1212 #endif  /* End of kernel only stuff */
1213 
1214 #endif  /* _LINUX_CDROM_H */
1215