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1.1 root 1: /* #define VERBOSE_IDE_CD_ERRORS 1 */
2: /*
3: * linux/drivers/block/ide-cd.c
4: * ATAPI cd-rom driver. To be used with ide.c.
5: * See Documentation/cdrom/ide-cd for usage information.
6: *
7: * Copyright (C) 1994, 1995, 1996 scott snyder <[email protected]>
8: * Copyright (C) 1996, 1997 Erik Andersen <[email protected]>
9: * Copyright (C) 1998 Jens Axboe and Chris Zwilling
10: *
11: * May be copied or modified under the terms of the GNU General Public License
12: * see linux/COPYING for more information.
13: *
14: * 1.00 Oct 31, 1994 -- Initial version.
15: * 1.01 Nov 2, 1994 -- Fixed problem with starting request in
16: * cdrom_check_status.
17: * 1.03 Nov 25, 1994 -- leaving unmask_intr[] as a user-setting (as for disks)
18: * (from mlord) -- minor changes to cdrom_setup()
19: * -- renamed ide_dev_s to ide_drive_t, enable irq on command
20: * 2.00 Nov 27, 1994 -- Generalize packet command interface;
21: * add audio ioctls.
22: * 2.01 Dec 3, 1994 -- Rework packet command interface to handle devices
23: * which send an interrupt when ready for a command.
24: * 2.02 Dec 11, 1994 -- Cache the TOC in the driver.
25: * Don't use SCMD_PLAYAUDIO_TI; it's not included
26: * in the current version of ATAPI.
27: * Try to use LBA instead of track or MSF addressing
28: * when possible.
29: * Don't wait for READY_STAT.
30: * 2.03 Jan 10, 1995 -- Rewrite block read routines to handle block sizes
31: * other than 2k and to move multiple sectors in a
32: * single transaction.
33: * 2.04 Apr 21, 1995 -- Add work-around for Creative Labs CD220E drives.
34: * Thanks to Nick Saw <[email protected]> for
35: * help in figuring this out. Ditto for Acer and
36: * Aztech drives, which seem to have the same problem.
37: * 2.04b May 30, 1995 -- Fix to match changes in ide.c version 3.16 -ml
38: * 2.05 Jun 8, 1995 -- Don't attempt to retry after an illegal request
39: * or data protect error.
40: * Use HWIF and DEV_HWIF macros as in ide.c.
41: * Always try to do a request_sense after
42: * a failed command.
43: * Include an option to give textual descriptions
44: * of ATAPI errors.
45: * Fix a bug in handling the sector cache which
46: * showed up if the drive returned data in 512 byte
47: * blocks (like Pioneer drives). Thanks to
48: * Richard Hirst <[email protected]> for diagnosing this.
49: * Properly supply the page number field in the
50: * MODE_SELECT command.
51: * PLAYAUDIO12 is broken on the Aztech; work around it.
52: * 2.05x Aug 11, 1995 -- lots of data structure renaming/restructuring in ide.c
53: * (my apologies to Scott, but now ide-cd.c is independent)
54: * 3.00 Aug 22, 1995 -- Implement CDROMMULTISESSION ioctl.
55: * Implement CDROMREADAUDIO ioctl (UNTESTED).
56: * Use input_ide_data() and output_ide_data().
57: * Add door locking.
58: * Fix usage count leak in cdrom_open, which happened
59: * when a read-write mount was attempted.
60: * Try to load the disk on open.
61: * Implement CDROMEJECT_SW ioctl (off by default).
62: * Read total cdrom capacity during open.
63: * Rearrange logic in cdrom_decode_status. Issue
64: * request sense commands for failed packet commands
65: * from here instead of from cdrom_queue_packet_command.
66: * Fix a race condition in retrieving error information.
67: * Suppress printing normal unit attention errors and
68: * some drive not ready errors.
69: * Implement CDROMVOLREAD ioctl.
70: * Implement CDROMREADMODE1/2 ioctls.
71: * Fix race condition in setting up interrupt handlers
72: * when the `serialize' option is used.
73: * 3.01 Sep 2, 1995 -- Fix ordering of reenabling interrupts in
74: * cdrom_queue_request.
75: * Another try at using ide_[input,output]_data.
76: * 3.02 Sep 16, 1995 -- Stick total disk capacity in partition table as well.
77: * Make VERBOSE_IDE_CD_ERRORS dump failed command again.
78: * Dump out more information for ILLEGAL REQUEST errs.
79: * Fix handling of errors occurring before the
80: * packet command is transferred.
81: * Fix transfers with odd bytelengths.
82: * 3.03 Oct 27, 1995 -- Some Creative drives have an id of just `CD'.
83: * `DCI-2S10' drives are broken too.
84: * 3.04 Nov 20, 1995 -- So are Vertos drives.
85: * 3.05 Dec 1, 1995 -- Changes to go with overhaul of ide.c and ide-tape.c
86: * 3.06 Dec 16, 1995 -- Add support needed for partitions.
87: * More workarounds for Vertos bugs (based on patches
88: * from Holger Dietze <[email protected]>).
89: * Try to eliminate byteorder assumptions.
90: * Use atapi_cdrom_subchnl struct definition.
91: * Add STANDARD_ATAPI compilation option.
92: * 3.07 Jan 29, 1996 -- More twiddling for broken drives: Sony 55D,
93: * Vertos 300.
94: * Add NO_DOOR_LOCKING configuration option.
95: * Handle drive_cmd requests w/NULL args (for hdparm -t).
96: * Work around sporadic Sony55e audio play problem.
97: * 3.07a Feb 11, 1996 -- check drive->id for NULL before dereferencing, to fix
98: * problem with "hde=cdrom" with no drive present. -ml
99: * 3.08 Mar 6, 1996 -- More Vertos workarounds.
100: * 3.09 Apr 5, 1996 -- Add CDROMCLOSETRAY ioctl.
101: * Switch to using MSF addressing for audio commands.
102: * Reformat to match kernel tabbing style.
103: * Add CDROM_GET_UPC ioctl.
104: * 3.10 Apr 10, 1996 -- Fix compilation error with STANDARD_ATAPI.
105: * 3.11 Apr 29, 1996 -- Patch from Heiko Eissfeldt <[email protected]>
106: * to remove redundant verify_area calls.
107: * 3.12 May 7, 1996 -- Rudimentary changer support. Based on patches
108: * from Gerhard Zuber <[email protected]>.
109: * Let open succeed even if there's no loaded disc.
110: * 3.13 May 19, 1996 -- Fixes for changer code.
111: * 3.14 May 29, 1996 -- Add work-around for Vertos 600.
112: * (From Hennus Bergman <[email protected]>.)
113: * 3.15 July 2, 1996 -- Added support for Sanyo 3 CD changers
114: * from Ben Galliart <[email protected]> with
115: * special help from Jeff Lightfoot
116: * <[email protected]>
117: * 3.15a July 9, 1996 -- Improved Sanyo 3 CD changer identification
118: * 3.16 Jul 28, 1996 -- Fix from Gadi to reduce kernel stack usage for ioctl.
119: * 3.17 Sep 17, 1996 -- Tweak audio reads for some drives.
120: * Start changing CDROMLOADFROMSLOT to CDROM_SELECT_DISC.
121: *
122: * 3.19 Nov 5, 1996 -- New ide-cd maintainer:
123: * Erik B. Andersen <[email protected]>
124: * 3.20 Jan 13,1997 -- Bug Fixes:
125: * Fix errors on CDROMSTOP (If you have a "Dolphin",
126: * you must define IHAVEADOLPHIN)
127: * Added identifier so new Sanyo CD-changer works
128: * Better detection if door locking isn't supported
129: * 3.21 Jun 16,1997 -- Add work-around for GCD-R580B
130: *
131: * 3.22 Nov 13, 1998 -- New ide-cd maintainers:
132: * Jens Axboe <[email protected]>
133: * Chris Zwilling <[email protected]>
134: *
135: * NOTE: Direct audio reads will only work on some types of drive.
136: * So far, i've received reports of success for Sony and Toshiba drives.
137: *
138: * ALSO NOTE:
139: *
140: * The ide cdrom driver has undergone extensive changes for the
141: * latest development kernel. If you wish to add new features to
142: * this driver, make your changes to the latest version in the
143: * development kernel. Only Bug fixes will be accepted for this
144: * version.
145: *
146: * For those wishing to work on this driver, please be sure you download
147: * and comply with the latest ATAPI standard. This document can be
148: * obtained by anonymous ftp from fission.dt.wdc.com in directory:
149: * /pub/standards/atapi/spec/SFF8020-r2.6/PDF/8020r26.pdf
150: *
151: */
152:
153:
154: /***************************************************************************/
155:
156: #include <linux/types.h>
157: #include <linux/kernel.h>
158: #include <linux/delay.h>
159: #include <linux/timer.h>
160: #include <linux/malloc.h>
161: #include <linux/ioport.h>
162: #include <linux/interrupt.h>
163: #include <linux/blkdev.h>
164: #include <linux/errno.h>
165: #include <linux/hdreg.h>
166: #include <linux/cdrom.h>
167: #include <linux/ucdrom.h>
168: #include <asm/irq.h>
169: #include <asm/io.h>
170: #include <asm/byteorder.h>
171: #include <asm/segment.h>
172: #include <asm/unaligned.h>
173:
174: #include "ide.h"
175:
176:
177:
178: /* Turn this on to have the driver print out the meanings of the
179: ATAPI error codes. This will use up additional kernel-space
180: memory, though. */
181:
182: #ifndef VERBOSE_IDE_CD_ERRORS
183: #define VERBOSE_IDE_CD_ERRORS 0
184: #endif
185:
186:
187: /* Turning this on will remove code to work around various nonstandard
188: ATAPI implementations. If you know your drive follows the standard,
189: this will give you a slightly smaller kernel. */
190:
191: #ifndef STANDARD_ATAPI
192: #define STANDARD_ATAPI 0
193: #endif
194:
195:
196: /* Turning this on will disable the door-locking functionality.
197: This is apparently needed for supermount. */
198:
199: #ifndef NO_DOOR_LOCKING
200: #define NO_DOOR_LOCKING 0
201: #endif
202:
203:
204: /* Size of buffer to allocate, in blocks, for audio reads. */
205:
206: #ifndef CDROM_NBLOCKS_BUFFER
207: #define CDROM_NBLOCKS_BUFFER 8
208: #endif
209:
210:
211: /************************************************************************/
212:
213: #define SECTOR_SIZE 512
214: #define SECTOR_BITS 9
215: #define SECTORS_PER_FRAME (CD_FRAMESIZE / SECTOR_SIZE)
216:
217: #define MIN(a,b) ((a) < (b) ? (a) : (b))
218:
219: /* special command codes for strategy routine. */
220: #define PACKET_COMMAND 4315
221: #define REQUEST_SENSE_COMMAND 4316
222: #define RESET_DRIVE_COMMAND 4317
223:
224: /* Some ATAPI command opcodes (just like SCSI).
225: (Some other cdrom-specific codes are in cdrom.h.) */
226: #define TEST_UNIT_READY 0x00
227: #define REQUEST_SENSE 0x03
228: #define START_STOP 0x1b
229: #define ALLOW_MEDIUM_REMOVAL 0x1e
230: #define READ_CAPACITY 0x25
231: #define READ_10 0x28
232: #define MODE_SENSE_10 0x5a
233: #define MODE_SELECT_10 0x55
234: #define READ_CD 0xbe
235:
236: #define LOAD_UNLOAD 0xa6
237:
238:
239: /* ATAPI sense keys (mostly copied from scsi.h). */
240:
241: #define NO_SENSE 0x00
242: #define RECOVERED_ERROR 0x01
243: #define NOT_READY 0x02
244: #define MEDIUM_ERROR 0x03
245: #define HARDWARE_ERROR 0x04
246: #define ILLEGAL_REQUEST 0x05
247: #define UNIT_ATTENTION 0x06
248: #define DATA_PROTECT 0x07
249: #define ABORTED_COMMAND 0x0b
250: #define MISCOMPARE 0x0e
251:
252: /* We want some additional flags for cd-rom drives.
253: To save space in the ide_drive_t struct, use some fields which
254: doesn't make sense for cd-roms -- `bios_sect' and `bios_head'. */
255:
256: /* Configuration flags. These describe the capabilities of the drive.
257: They generally do not change after initialization, unless we learn
258: more about the drive from stuff failing. */
259: struct ide_cd_config_flags {
260: __u8 drq_interrupt : 1; /* Device sends an interrupt when ready
261: for a packet command. */
262: __u8 no_doorlock : 1; /* Drive cannot lock the door. */
263: #if ! STANDARD_ATAPI
264: __u8 old_readcd : 1; /* Drive uses old READ CD opcode. */
265: __u8 playmsf_as_bcd : 1; /* PLAYMSF command takes BCD args. */
266: __u8 tocaddr_as_bcd : 1; /* TOC addresses are in BCD. */
267: __u8 toctracks_as_bcd : 1; /* TOC track numbers are in BCD. */
268: __u8 subchan_as_bcd : 1; /* Subchannel info is in BCD. */
269: #endif /* not STANDARD_ATAPI */
270: __u8 reserved : 1;
271: };
272: #define CDROM_CONFIG_FLAGS(drive) ((struct ide_cd_config_flags *)&((drive)->bios_sect))
273:
274:
275: /* State flags. These give information about the current state of the
276: drive, and will change during normal operation. */
277: struct ide_cd_state_flags {
278: __u8 media_changed : 1; /* Driver has noticed a media change. */
279: __u8 toc_valid : 1; /* Saved TOC information is current. */
280: __u8 door_locked : 1; /* We think that the drive door is locked. */
281: __u8 eject_on_close: 1; /* Drive should eject when device is closed. */
282: __u8 sanyo_slot : 2; /* Sanyo 3 CD changer support */
283: __u8 reserved : 2;
284: };
285: #define CDROM_STATE_FLAGS(drive) ((struct ide_cd_state_flags *)&((drive)->bios_head))
286:
287:
288: #define SECTOR_BUFFER_SIZE CD_FRAMESIZE
289:
290:
291:
292: /****************************************************************************
293: * Routines to read and write data from/to the drive, using
294: * the routines input_ide_data() and output_ide_data() from ide.c.
295: *
296: * These routines will round up any request for an odd number of bytes,
297: * so if an odd bytecount is specified, be sure that there's at least one
298: * extra byte allocated for the buffer.
299: */
300:
301:
302: static inline
303: void cdrom_in_bytes (ide_drive_t *drive, void *buffer, uint bytecount)
304: {
305: ++bytecount;
306: ide_input_data (drive, buffer, bytecount / 4);
307: if ((bytecount & 0x03) >= 2) {
308: insw (IDE_DATA_REG, ((byte *)buffer) + (bytecount & ~0x03), 1);
309: }
310: }
311:
312:
313: static inline
314: void cdrom_out_bytes (ide_drive_t *drive, void *buffer, uint bytecount)
315: {
316: ++bytecount;
317: ide_output_data (drive, buffer, bytecount / 4);
318: if ((bytecount & 0x03) >= 2) {
319: outsw (IDE_DATA_REG,
320: ((byte *)buffer) + (bytecount & ~0x03), 1);
321: }
322: }
323:
324:
325:
326: /****************************************************************************
327: * Descriptions of ATAPI error codes.
328: */
329:
330: #define ARY_LEN(a) ((sizeof(a) / sizeof(a[0])))
331:
332: #if VERBOSE_IDE_CD_ERRORS
333:
334: /* From Table 124 of the ATAPI 1.2 spec. */
335:
336: char *sense_key_texts[16] = {
337: "No sense data",
338: "Recovered error",
339: "Not ready",
340: "Medium error",
341: "Hardware error",
342: "Illegal request",
343: "Unit attention",
344: "Data protect",
345: "(reserved)",
346: "(reserved)",
347: "(reserved)",
348: "Aborted command",
349: "(reserved)",
350: "(reserved)",
351: "Miscompare",
352: "(reserved)",
353: };
354:
355:
356: /* From Table 125 of the ATAPI 1.2 spec. */
357:
358: struct {
359: short asc_ascq;
360: char *text;
361: } sense_data_texts[] = {
362: { 0x0000, "No additional sense information" },
363: { 0x0011, "Audio play operation in progress" },
364: { 0x0012, "Audio play operation paused" },
365: { 0x0013, "Audio play operation successfully completed" },
366: { 0x0014, "Audio play operation stopped due to error" },
367: { 0x0015, "No current audio status to return" },
368:
369: { 0x0200, "No seek complete" },
370:
371: { 0x0400, "Logical unit not ready - cause not reportable" },
372: { 0x0401,
373: "Logical unit not ready - in progress (sic) of becoming ready" },
374: { 0x0402, "Logical unit not ready - initializing command required" },
375: { 0x0403, "Logical unit not ready - manual intervention required" },
376:
377: { 0x0600, "No reference position found" },
378:
379: { 0x0900, "Track following error" },
380: { 0x0901, "Tracking servo failure" },
381: { 0x0902, "Focus servo failure" },
382: { 0x0903, "Spindle servo failure" },
383:
384: { 0x1100, "Unrecovered read error" },
385: { 0x1106, "CIRC unrecovered error" },
386:
387: { 0x1500, "Random positioning error" },
388: { 0x1501, "Mechanical positioning error" },
389: { 0x1502, "Positioning error detected by read of medium" },
390:
391: { 0x1700, "Recovered data with no error correction applied" },
392: { 0x1701, "Recovered data with retries" },
393: { 0x1702, "Recovered data with positive head offset" },
394: { 0x1703, "Recovered data with negative head offset" },
395: { 0x1704, "Recovered data with retries and/or CIRC applied" },
396: { 0x1705, "Recovered data using previous sector ID" },
397:
398: { 0x1800, "Recovered data with error correction applied" },
399: { 0x1801, "Recovered data with error correction and retries applied" },
400: { 0x1802, "Recovered data - the data was auto-reallocated" },
401: { 0x1803, "Recovered data with CIRC" },
402: { 0x1804, "Recovered data with L-EC" },
403: { 0x1805, "Recovered data - recommend reassignment" },
404: { 0x1806, "Recovered data - recommend rewrite" },
405:
406: { 0x1a00, "Parameter list length error" },
407:
408: { 0x2000, "Invalid command operation code" },
409:
410: { 0x2100, "Logical block address out of range" },
411:
412: { 0x2400, "Invalid field in command packet" },
413:
414: { 0x2600, "Invalid field in parameter list" },
415: { 0x2601, "Parameter not supported" },
416: { 0x2602, "Parameter value invalid" },
417: { 0x2603, "Threshold parameters not supported" },
418:
419: { 0x2800, "Not ready to ready transition, medium may have changed" },
420:
421: { 0x2900, "Power on, reset or bus device reset occurred" },
422:
423: { 0x2a00, "Parameters changed" },
424: { 0x2a01, "Mode parameters changed" },
425:
426: { 0x3000, "Incompatible medium installed" },
427: { 0x3001, "Cannot read medium - unknown format" },
428: { 0x3002, "Cannot read medium - incompatible format" },
429:
430: { 0x3700, "Rounded parameter" },
431:
432: { 0x3900, "Saving parameters not supported" },
433:
434: { 0x3a00, "Medium not present" },
435:
436: { 0x3f00, "ATAPI CD-ROM drive operating conditions have changed" },
437: { 0x3f01, "Microcode has been changed" },
438: { 0x3f02, "Changed operating definition" },
439: { 0x3f03, "Inquiry data has changed" },
440:
441: { 0x4000, "Diagnostic failure on component (ASCQ)" },
442:
443: { 0x4400, "Internal ATAPI CD-ROM drive failure" },
444:
445: { 0x4e00, "Overlapped commands attempted" },
446:
447: { 0x5300, "Media load or eject failed" },
448: { 0x5302, "Medium removal prevented" },
449:
450: { 0x5700, "Unable to recover table of contents" },
451:
452: { 0x5a00, "Operator request or state change input (unspecified)" },
453: { 0x5a01, "Operator medium removal request" },
454:
455: { 0x5b00, "Threshold condition met" },
456:
457: { 0x5c00, "Status change" },
458:
459: { 0x6300, "End of user area encountered on this track" },
460:
461: { 0x6400, "Illegal mode for this track" },
462:
463: { 0xbf00, "Loss of streaming" },
464: };
465: #endif
466:
467:
468:
469: /****************************************************************************
470: * Generic packet command support and error handling routines.
471: */
472:
473:
474: static
475: void cdrom_analyze_sense_data (ide_drive_t *drive,
476: struct atapi_request_sense *reqbuf,
477: struct packet_command *failed_command)
478: {
479: /* Don't print not ready or unit attention errors for READ_SUBCHANNEL.
480: Workman (and probably other programs) uses this command to poll
481: the drive, and we don't want to fill the syslog
482: with useless errors. */
483: if (failed_command &&
484: failed_command->c[0] == SCMD_READ_SUBCHANNEL &&
485: (reqbuf->sense_key == NOT_READY ||
486: reqbuf->sense_key == UNIT_ATTENTION))
487: return;
488:
489: #if VERBOSE_IDE_CD_ERRORS
490: {
491: int i;
492: char *s;
493: char buf[80];
494:
495: printk ("ATAPI device %s:\n", drive->name);
496:
497: printk (" Error code: 0x%02x\n", reqbuf->error_code);
498:
499: if (reqbuf->sense_key >= 0 &&
500: reqbuf->sense_key < ARY_LEN (sense_key_texts))
501: s = sense_key_texts[reqbuf->sense_key];
502: else
503: s = "(bad sense key)";
504:
505: printk (" Sense key: 0x%02x - %s\n", reqbuf->sense_key, s);
506:
507: if (reqbuf->asc == 0x40) {
508: sprintf (buf, "Diagnostic failure on component 0x%02x",
509: reqbuf->ascq);
510: s = buf;
511: } else {
512: int lo, hi;
513: int key = (reqbuf->asc << 8);
514: if ( ! (reqbuf->ascq >= 0x80 && reqbuf->ascq <= 0xdd) )
515: key |= reqbuf->ascq;
516:
517: lo = 0;
518: hi = ARY_LEN (sense_data_texts);
519: s = NULL;
520:
521: while (hi > lo) {
522: int mid = (lo + hi) / 2;
523: if (sense_data_texts[mid].asc_ascq == key) {
524: s = sense_data_texts[mid].text;
525: break;
526: }
527: else if (sense_data_texts[mid].asc_ascq > key)
528: hi = mid;
529: else
530: lo = mid+1;
531: }
532: }
533:
534: if (s == NULL) {
535: if (reqbuf->asc > 0x80)
536: s = "(vendor-specific error)";
537: else
538: s = "(reserved error code)";
539: }
540:
541: printk (" Additional sense data: 0x%02x, 0x%02x - %s\n",
542: reqbuf->asc, reqbuf->ascq, s);
543:
544: if (failed_command != NULL) {
545: printk (" Failed packet command: ");
546: for (i=0; i<sizeof (failed_command->c); i++)
547: printk ("%02x ", failed_command->c[i]);
548: printk ("\n");
549: }
550:
551: if (reqbuf->sense_key == ILLEGAL_REQUEST &&
552: (reqbuf->sense_key_specific[0] & 0x80) != 0) {
553: printk (" Error in %s byte %d",
554: (reqbuf->sense_key_specific[0] & 0x40) != 0
555: ? "command packet"
556: : "command data",
557: (reqbuf->sense_key_specific[1] << 8) +
558: reqbuf->sense_key_specific[2]);
559:
560: if ((reqbuf->sense_key_specific[0] & 0x40) != 0) {
561: printk (" bit %d",
562: reqbuf->sense_key_specific[0] & 0x07);
563: }
564:
565: printk ("\n");
566: }
567: }
568:
569: #else /* not VERBOSE_IDE_CD_ERRORS */
570:
571: /* Suppress printing unit attention and `in progress of becoming ready'
572: errors when we're not being verbose. */
573:
574: if (reqbuf->sense_key == UNIT_ATTENTION ||
575: (reqbuf->sense_key == NOT_READY && (reqbuf->asc == 4 ||
576: reqbuf->asc == 0x3a)))
577: return;
578:
579: printk ("%s: code: 0x%02x key: 0x%02x asc: 0x%02x ascq: 0x%02x\n",
580: drive->name,
581: reqbuf->error_code, reqbuf->sense_key,
582: reqbuf->asc, reqbuf->ascq);
583: #endif /* not VERBOSE_IDE_CD_ERRORS */
584: }
585:
586:
587: /* Fix up a possibly partially-processed request so that we can
588: start it over entirely, or even put it back on the request queue. */
589: static void restore_request (struct request *rq)
590: {
591: if (rq->buffer != rq->bh->b_data) {
592: int n = (rq->buffer - rq->bh->b_data) / SECTOR_SIZE;
593: rq->buffer = rq->bh->b_data;
594: rq->nr_sectors += n;
595: rq->sector -= n;
596: }
597: rq->current_nr_sectors = rq->bh->b_size >> SECTOR_BITS;
598: }
599:
600:
601: static void cdrom_queue_request_sense (ide_drive_t *drive,
602: struct semaphore *sem,
603: struct atapi_request_sense *reqbuf,
604: struct packet_command *failed_command)
605: {
606: struct request *rq;
607: struct packet_command *pc;
608: int len;
609:
610: /* If the request didn't explicitly specify where
611: to put the sense data, use the statically allocated structure. */
612: if (reqbuf == NULL)
613: reqbuf = &drive->cdrom_info.sense_data;
614:
615: /* Make up a new request to retrieve sense information. */
616:
617: pc = &HWIF(drive)->request_sense_pc;
618: memset (pc, 0, sizeof (*pc));
619:
620: /* The request_sense structure has an odd number of (16-bit) words,
621: which won't work well with 32-bit transfers. However, we don't care
622: about the last two bytes, so just truncate the structure down
623: to an even length. */
624: len = sizeof (*reqbuf) / 4;
625: len *= 4;
626:
627: pc->c[0] = REQUEST_SENSE;
628: pc->c[4] = len;
629: pc->buffer = (char *)reqbuf;
630: pc->buflen = len;
631: pc->sense_data = (struct atapi_request_sense *)failed_command;
632:
633: /* stuff the sense request in front of our current request */
634:
635: rq = &HWIF(drive)->request_sense_request;
636: ide_init_drive_cmd (rq);
637: rq->cmd = REQUEST_SENSE_COMMAND;
638: rq->buffer = (char *)pc;
639: rq->sem = sem;
640: (void) ide_do_drive_cmd (drive, rq, ide_preempt);
641: }
642:
643:
644: static void cdrom_end_request (int uptodate, ide_drive_t *drive)
645: {
646: struct request *rq = HWGROUP(drive)->rq;
647:
648: if (rq->cmd == REQUEST_SENSE_COMMAND && uptodate) {
649: struct packet_command *pc = (struct packet_command *)
650: rq->buffer;
651: cdrom_analyze_sense_data (drive,
652: (struct atapi_request_sense *)
653: (pc->buffer - pc->c[4]),
654: (struct packet_command *)
655: pc->sense_data);
656: }
657:
658: ide_end_request (uptodate, HWGROUP(drive));
659: }
660:
661:
662: /* Mark that we've seen a media change, and invalidate our internal
663: buffers. */
664: static void cdrom_saw_media_change (ide_drive_t *drive)
665: {
666: CDROM_STATE_FLAGS (drive)->media_changed = 1;
667: CDROM_STATE_FLAGS (drive)->toc_valid = 0;
668: drive->cdrom_info.nsectors_buffered = 0;
669: }
670:
671:
672: /* Returns 0 if the request should be continued.
673: Returns 1 if the request was ended. */
674: static int cdrom_decode_status (ide_drive_t *drive, int good_stat,
675: int *stat_ret)
676: {
677: struct request *rq = HWGROUP(drive)->rq;
678: int stat, err, sense_key, cmd;
679:
680: /* Check for errors. */
681: stat = GET_STAT();
682: *stat_ret = stat;
683:
684: if (OK_STAT (stat, good_stat, BAD_R_STAT))
685: return 0;
686:
687: /* Got an error. */
688: err = IN_BYTE (IDE_ERROR_REG);
689: sense_key = err >> 4;
690:
691: if (rq == NULL)
692: printk ("%s : missing request in cdrom_decode_status\n",
693: drive->name);
694: else {
695: cmd = rq->cmd;
696:
697: if (cmd == REQUEST_SENSE_COMMAND) {
698: /* We got an error trying to get sense info
699: from the drive (probably while trying
700: to recover from a former error). Just give up. */
701:
702: struct packet_command *pc = (struct packet_command *)
703: rq->buffer;
704: pc->stat = 1;
705: cdrom_end_request (1, drive);
706: ide_error (drive, "request sense failure", stat);
707: return 1;
708:
709: } else if (cmd == PACKET_COMMAND) {
710: /* All other functions, except for READ. */
711:
712: struct packet_command *pc = (struct packet_command *)
713: rq->buffer;
714: struct semaphore *sem = NULL;
715:
716: /* Check for tray open. */
717: if (sense_key == NOT_READY) {
718: cdrom_saw_media_change (drive);
719:
720: /* Print an error message to the syslog.
721: Exception: don't print anything if this
722: is a read subchannel command. This is
723: because workman constantly polls the drive
724: with this command, and we don't want
725: to uselessly fill up the syslog. */
726: if (pc->c[0] != SCMD_READ_SUBCHANNEL)
727: printk ("%s : tray open or drive not ready\n",
728: drive->name);
729: } else if (sense_key == UNIT_ATTENTION) {
730: /* Check for media change. */
731: cdrom_saw_media_change (drive);
732: printk ("%s: media changed\n", drive->name);
733: } else {
734: /* Otherwise, print an error. */
735: ide_dump_status (drive, "packet command error",
736: stat);
737: }
738:
739: /* Set the error flag and complete the request.
740: Then, if we have a CHECK CONDITION status,
741: queue a request sense command. We must be careful,
742: though: we don't want the thread in
743: cdrom_queue_packet_command to wake up until
744: the request sense has completed. We do this
745: by transferring the semaphore from the packet
746: command request to the request sense request. */
747:
748: if ((stat & ERR_STAT) != 0) {
749: sem = rq->sem;
750: rq->sem = NULL;
751: }
752:
753: pc->stat = 1;
754: cdrom_end_request (1, drive);
755:
756: if ((stat & ERR_STAT) != 0)
757: cdrom_queue_request_sense (drive, sem,
758: pc->sense_data, pc);
759: } else {
760: /* Handle errors from READ requests. */
761:
762: if (sense_key == NOT_READY) {
763: /* Tray open. */
764: cdrom_saw_media_change (drive);
765:
766: /* Fail the request. */
767: printk ("%s : tray open\n", drive->name);
768: cdrom_end_request (0, drive);
769: } else if (sense_key == UNIT_ATTENTION) {
770: /* Media change. */
771: cdrom_saw_media_change (drive);
772:
773: /* Arrange to retry the request.
774: But be sure to give up if we've retried
775: too many times. */
776: if (++rq->errors > ERROR_MAX)
777: cdrom_end_request (0, drive);
778: } else if (sense_key == ILLEGAL_REQUEST ||
779: sense_key == DATA_PROTECT) {
780: /* No point in retrying after an illegal
781: request or data protect error.*/
782: ide_dump_status (drive, "command error", stat);
783: cdrom_end_request (0, drive);
784: } else if ((err & ~ABRT_ERR) != 0) {
785: /* Go to the default handler
786: for other errors. */
787: ide_error (drive, "cdrom_decode_status", stat);
788: return 1;
789: } else if ((++rq->errors > ERROR_MAX)) {
790: /* We've racked up too many retries. Abort. */
791: cdrom_end_request (0, drive);
792: }
793:
794: /* If we got a CHECK_CONDITION status,
795: queue a request sense command. */
796: if ((stat & ERR_STAT) != 0)
797: cdrom_queue_request_sense (drive,
798: NULL, NULL, NULL);
799: }
800: }
801:
802: /* Retry, or handle the next request. */
803: return 1;
804: }
805:
806:
807: /* Set up the device registers for transferring a packet command on DEV,
808: expecting to later transfer XFERLEN bytes. HANDLER is the routine
809: which actually transfers the command to the drive. If this is a
810: drq_interrupt device, this routine will arrange for HANDLER to be
811: called when the interrupt from the drive arrives. Otherwise, HANDLER
812: will be called immediately after the drive is prepared for the transfer. */
813:
814: static int cdrom_start_packet_command (ide_drive_t *drive, int xferlen,
815: ide_handler_t *handler)
816: {
817: /* Wait for the controller to be idle. */
818: if (ide_wait_stat (drive, 0, BUSY_STAT, WAIT_READY)) return 1;
819:
820: /* Set up the controller registers. */
821: OUT_BYTE (0, IDE_FEATURE_REG);
822: OUT_BYTE (0, IDE_NSECTOR_REG);
823: OUT_BYTE (0, IDE_SECTOR_REG);
824:
825: OUT_BYTE (xferlen & 0xff, IDE_LCYL_REG);
826: OUT_BYTE (xferlen >> 8 , IDE_HCYL_REG);
827: OUT_BYTE (drive->ctl, IDE_CONTROL_REG);
828:
829: if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) {
830: ide_set_handler (drive, handler, WAIT_CMD);
831: OUT_BYTE (WIN_PACKETCMD, IDE_COMMAND_REG); /* packet command */
832: } else {
833: OUT_BYTE (WIN_PACKETCMD, IDE_COMMAND_REG); /* packet command */
834: (*handler) (drive);
835: }
836:
837: return 0;
838: }
839:
840:
841: /* Send a packet command to DRIVE described by CMD_BUF and CMD_LEN.
842: The device registers must have already been prepared
843: by cdrom_start_packet_command.
844: HANDLER is the interrupt handler to call when the command completes
845: or there's data ready. */
846: static int cdrom_transfer_packet_command (ide_drive_t *drive,
847: char *cmd_buf, int cmd_len,
848: ide_handler_t *handler)
849: {
850: if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) {
851: /* Here we should have been called after receiving an interrupt
852: from the device. DRQ should how be set. */
853: int stat_dum;
854:
855: /* Check for errors. */
856: if (cdrom_decode_status (drive, DRQ_STAT, &stat_dum)) return 1;
857: } else {
858: /* Otherwise, we must wait for DRQ to get set. */
859: if (ide_wait_stat (drive, DRQ_STAT, BUSY_STAT, WAIT_READY))
860: return 1;
861: }
862:
863: /* Arm the interrupt handler. */
864: ide_set_handler (drive, handler, WAIT_CMD);
865:
866: /* Send the command to the device. */
867: cdrom_out_bytes (drive, cmd_buf, cmd_len);
868:
869: return 0;
870: }
871:
872:
873:
874: /****************************************************************************
875: * Block read functions.
876: */
877:
878: /*
879: * Buffer up to SECTORS_TO_TRANSFER sectors from the drive in our sector
880: * buffer. Once the first sector is added, any subsequent sectors are
881: * assumed to be continuous (until the buffer is cleared). For the first
882: * sector added, SECTOR is its sector number. (SECTOR is then ignored until
883: * the buffer is cleared.)
884: */
885: static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector,
886: int sectors_to_transfer)
887: {
888: struct cdrom_info *info = &drive->cdrom_info;
889:
890: /* Number of sectors to read into the buffer. */
891: int sectors_to_buffer = MIN (sectors_to_transfer,
892: (SECTOR_BUFFER_SIZE >> SECTOR_BITS) -
893: info->nsectors_buffered);
894:
895: char *dest;
896:
897: /* If we don't yet have a sector buffer, try to allocate one.
898: If we can't get one atomically, it's not fatal -- we'll just throw
899: the data away rather than caching it. */
900: if (info->sector_buffer == NULL) {
901: info->sector_buffer = (char *) kmalloc (SECTOR_BUFFER_SIZE,
902: GFP_ATOMIC);
903:
904: /* If we couldn't get a buffer,
905: don't try to buffer anything... */
906: if (info->sector_buffer == NULL)
907: sectors_to_buffer = 0;
908: }
909:
910: /* If this is the first sector in the buffer, remember its number. */
911: if (info->nsectors_buffered == 0)
912: info->sector_buffered = sector;
913:
914: /* Read the data into the buffer. */
915: dest = info->sector_buffer + info->nsectors_buffered * SECTOR_SIZE;
916: while (sectors_to_buffer > 0) {
917: cdrom_in_bytes (drive, dest, SECTOR_SIZE);
918: --sectors_to_buffer;
919: --sectors_to_transfer;
920: ++info->nsectors_buffered;
921: dest += SECTOR_SIZE;
922: }
923:
924: /* Throw away any remaining data. */
925: while (sectors_to_transfer > 0) {
926: char dum[SECTOR_SIZE];
927: cdrom_in_bytes (drive, dum, sizeof (dum));
928: --sectors_to_transfer;
929: }
930: }
931:
932:
933: /*
934: * Check the contents of the interrupt reason register from the cdrom
935: * and attempt to recover if there are problems. Returns 0 if everything's
936: * ok; nonzero if the request has been terminated.
937: */
938: static inline
939: int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason)
940: {
941: ireason &= 3;
942: if (ireason == 2) return 0;
943:
944: if (ireason == 0) {
945: /* Whoops... The drive is expecting to receive data from us! */
946: printk ("%s: cdrom_read_intr: "
947: "Drive wants to transfer data the wrong way!\n",
948: drive->name);
949:
950: /* Throw some data at the drive so it doesn't hang
951: and quit this request. */
952: while (len > 0) {
953: int dum = 0;
954: cdrom_out_bytes (drive, &dum, sizeof (dum));
955: len -= sizeof (dum);
956: }
957: } else {
958: /* Drive wants a command packet, or invalid ireason... */
959: printk ("%s: cdrom_read_intr: bad interrupt reason %d\n",
960: drive->name, ireason);
961: }
962:
963: cdrom_end_request (0, drive);
964: return -1;
965: }
966:
967:
968: /*
969: * Interrupt routine. Called when a read request has completed.
970: */
971: static void cdrom_read_intr (ide_drive_t *drive)
972: {
973: int stat;
974: int ireason, len, sectors_to_transfer, nskip;
975:
976: struct request *rq = HWGROUP(drive)->rq;
977:
978: /* Check for errors. */
979: if (cdrom_decode_status (drive, 0, &stat)) return;
980:
981: /* Read the interrupt reason and the transfer length. */
982: ireason = IN_BYTE (IDE_NSECTOR_REG);
983: len = IN_BYTE (IDE_LCYL_REG) + 256 * IN_BYTE (IDE_HCYL_REG);
984:
985: /* If DRQ is clear, the command has completed. */
986: if ((stat & DRQ_STAT) == 0) {
987: /* If we're not done filling the current buffer, complain.
988: Otherwise, complete the command normally. */
989: if (rq->current_nr_sectors > 0) {
990: printk ("%s: cdrom_read_intr: data underrun (%ld blocks)\n",
991: drive->name, rq->current_nr_sectors);
992: cdrom_end_request (0, drive);
993: } else
994: cdrom_end_request (1, drive);
995:
996: return;
997: }
998:
999: /* Check that the drive is expecting to do the same thing we are. */
1000: if (cdrom_read_check_ireason (drive, len, ireason)) return;
1001:
1002: /* Assume that the drive will always provide data in multiples
1003: of at least SECTOR_SIZE, as it gets hairy to keep track
1004: of the transfers otherwise. */
1005: if ((len % SECTOR_SIZE) != 0) {
1006: printk ("%s: cdrom_read_intr: Bad transfer size %d\n",
1007: drive->name, len);
1008: printk (" This drive is not supported by this version of the driver\n");
1009: cdrom_end_request (0, drive);
1010: return;
1011: }
1012:
1013: /* The number of sectors we need to read from the drive. */
1014: sectors_to_transfer = len / SECTOR_SIZE;
1015:
1016: /* First, figure out if we need to bit-bucket
1017: any of the leading sectors. */
1018: nskip = MIN ((int)(rq->current_nr_sectors -
1019: (rq->bh->b_size >> SECTOR_BITS)),
1020: sectors_to_transfer);
1021:
1022: while (nskip > 0) {
1023: /* We need to throw away a sector. */
1024: char dum[SECTOR_SIZE];
1025: cdrom_in_bytes (drive, dum, sizeof (dum));
1026:
1027: --rq->current_nr_sectors;
1028: --nskip;
1029: --sectors_to_transfer;
1030: }
1031:
1032: /* Now loop while we still have data to read from the drive. */
1033: while (sectors_to_transfer > 0) {
1034: int this_transfer;
1035:
1036: /* If we've filled the present buffer but there's another
1037: chained buffer after it, move on. */
1038: if (rq->current_nr_sectors == 0 &&
1039: rq->nr_sectors > 0)
1040: cdrom_end_request (1, drive);
1041:
1042: /* If the buffers are full, cache the rest of the data in our
1043: internal buffer. */
1044: if (rq->current_nr_sectors == 0) {
1045: cdrom_buffer_sectors (drive,
1046: rq->sector, sectors_to_transfer);
1047: sectors_to_transfer = 0;
1048: } else {
1049: /* Transfer data to the buffers.
1050: Figure out how many sectors we can transfer
1051: to the current buffer. */
1052: this_transfer = MIN (sectors_to_transfer,
1053: rq->current_nr_sectors);
1054:
1055: /* Read this_transfer sectors
1056: into the current buffer. */
1057: while (this_transfer > 0) {
1058: cdrom_in_bytes (drive
1059: , rq->buffer, SECTOR_SIZE);
1060: rq->buffer += SECTOR_SIZE;
1061: --rq->nr_sectors;
1062: --rq->current_nr_sectors;
1063: ++rq->sector;
1064: --this_transfer;
1065: --sectors_to_transfer;
1066: }
1067: }
1068: }
1069:
1070: /* Done moving data!
1071: Wait for another interrupt. */
1072: ide_set_handler (drive, &cdrom_read_intr, WAIT_CMD);
1073: }
1074:
1075:
1076: /*
1077: * Try to satisfy some of the current read request from our cached data.
1078: * Returns nonzero if the request has been completed, zero otherwise.
1079: */
1080: static int cdrom_read_from_buffer (ide_drive_t *drive)
1081: {
1082: struct cdrom_info *info = &drive->cdrom_info;
1083: struct request *rq = HWGROUP(drive)->rq;
1084:
1085: /* Can't do anything if there's no buffer. */
1086: if (info->sector_buffer == NULL) return 0;
1087:
1088: /* Loop while this request needs data and the next block is present
1089: in our cache. */
1090: while (rq->nr_sectors > 0 &&
1091: rq->sector >= info->sector_buffered &&
1092: rq->sector < info->sector_buffered + info->nsectors_buffered) {
1093: if (rq->current_nr_sectors == 0)
1094: cdrom_end_request (1, drive);
1095:
1096: memcpy (rq->buffer,
1097: info->sector_buffer +
1098: (rq->sector - info->sector_buffered) * SECTOR_SIZE,
1099: SECTOR_SIZE);
1100: rq->buffer += SECTOR_SIZE;
1101: --rq->current_nr_sectors;
1102: --rq->nr_sectors;
1103: ++rq->sector;
1104: }
1105:
1106: /* If we've satisfied the current request,
1107: terminate it successfully. */
1108: if (rq->nr_sectors == 0) {
1109: cdrom_end_request (1, drive);
1110: return -1;
1111: }
1112:
1113: /* Move on to the next buffer if needed. */
1114: if (rq->current_nr_sectors == 0)
1115: cdrom_end_request (1, drive);
1116:
1117: /* If this condition does not hold, then the kluge i use to
1118: represent the number of sectors to skip at the start of a transfer
1119: will fail. I think that this will never happen, but let's be
1120: paranoid and check. */
1121: if (rq->current_nr_sectors < (rq->bh->b_size >> SECTOR_BITS) &&
1122: (rq->sector % SECTORS_PER_FRAME) != 0) {
1123: printk ("%s: cdrom_read_from_buffer: buffer botch (%ld)\n",
1124: drive->name, rq->sector);
1125: cdrom_end_request (0, drive);
1126: return -1;
1127: }
1128:
1129: return 0;
1130: }
1131:
1132:
1133:
1134: /*
1135: * Routine to send a read packet command to the drive.
1136: * This is usually called directly from cdrom_start_read.
1137: * However, for drq_interrupt devices, it is called from an interrupt
1138: * when the drive is ready to accept the command.
1139: */
1140: static void cdrom_start_read_continuation (ide_drive_t *drive)
1141: {
1142: struct packet_command pc;
1143: struct request *rq = HWGROUP(drive)->rq;
1144:
1145: int nsect, sector, nframes, frame, nskip;
1146:
1147: /* Number of sectors to transfer. */
1148: nsect = rq->nr_sectors;
1149:
1150: #if !STANDARD_ATAPI
1151: if (nsect > drive->cdrom_info.max_sectors)
1152: nsect = drive->cdrom_info.max_sectors;
1153: #endif /* not STANDARD_ATAPI */
1154:
1155: /* Starting sector. */
1156: sector = rq->sector;
1157:
1158: /* If the requested sector doesn't start on a cdrom block boundary,
1159: we must adjust the start of the transfer so that it does,
1160: and remember to skip the first few sectors.
1161: If the CURRENT_NR_SECTORS field is larger than the size
1162: of the buffer, it will mean that we're to skip a number
1163: of sectors equal to the amount by which CURRENT_NR_SECTORS
1164: is larger than the buffer size. */
1165: nskip = (sector % SECTORS_PER_FRAME);
1166: if (nskip > 0) {
1167: /* Sanity check... */
1168: if (rq->current_nr_sectors !=
1169: (rq->bh->b_size >> SECTOR_BITS)) {
1170: printk ("%s: cdrom_start_read_continuation: buffer botch (%ld)\n",
1171: drive->name, rq->current_nr_sectors);
1172: cdrom_end_request (0, drive);
1173: return;
1174: }
1175:
1176: sector -= nskip;
1177: nsect += nskip;
1178: rq->current_nr_sectors += nskip;
1179: }
1180:
1181: /* Convert from sectors to cdrom blocks, rounding up the transfer
1182: length if needed. */
1183: nframes = (nsect + SECTORS_PER_FRAME-1) / SECTORS_PER_FRAME;
1184: frame = sector / SECTORS_PER_FRAME;
1185:
1186: /* Largest number of frames was can transfer at once is 64k-1. */
1187: nframes = MIN (nframes, 65535);
1188:
1189: /* Set up the command */
1190: memset (&pc.c, 0, sizeof (pc.c));
1191: pc.c[0] = READ_10;
1192: pc.c[7] = (nframes >> 8);
1193: pc.c[8] = (nframes & 0xff);
1194: put_unaligned(htonl (frame), (unsigned int *) &pc.c[2]);
1195:
1196: /* Send the command to the drive and return. */
1197: (void) cdrom_transfer_packet_command (drive, pc.c, sizeof (pc.c),
1198: &cdrom_read_intr);
1199: }
1200:
1201:
1202: /*
1203: * Start a read request from the CD-ROM.
1204: */
1205: static void cdrom_start_read (ide_drive_t *drive, unsigned int block)
1206: {
1207: struct request *rq = HWGROUP(drive)->rq;
1208: int minor = MINOR (rq->rq_dev);
1209:
1210: /* If the request is relative to a partition, fix it up to refer to the
1211: absolute address. */
1212: if ((minor & PARTN_MASK) != 0) {
1213: rq->sector = block;
1214: minor &= ~PARTN_MASK;
1215: rq->rq_dev = MKDEV (MAJOR(rq->rq_dev), minor);
1216: }
1217:
1218: /* We may be retrying this request after an error. Fix up
1219: any weirdness which might be present in the request packet. */
1220: restore_request (rq);
1221:
1222: /* Satisfy whatever we can of this request from our cached sector. */
1223: if (cdrom_read_from_buffer (drive))
1224: return;
1225:
1226: /* Clear the local sector buffer. */
1227: drive->cdrom_info.nsectors_buffered = 0;
1228:
1229: /* Start sending the read request to the drive. */
1230: cdrom_start_packet_command (drive, 32768,
1231: cdrom_start_read_continuation);
1232: }
1233:
1234:
1235:
1236:
1237: /****************************************************************************
1238: * Execute all other packet commands.
1239: */
1240:
1241: /* Forward declarations. */
1242: static int
1243: cdrom_lockdoor (ide_drive_t *drive, int lockflag,
1244: struct atapi_request_sense *reqbuf);
1245:
1246:
1247:
1248: /* Interrupt routine for packet command completion. */
1249: static void cdrom_pc_intr (ide_drive_t *drive)
1250: {
1251: int ireason, len, stat, thislen;
1252: struct request *rq = HWGROUP(drive)->rq;
1253: struct packet_command *pc = (struct packet_command *)rq->buffer;
1254:
1255: /* Check for errors. */
1256: if (cdrom_decode_status (drive, 0, &stat)) return;
1257:
1258: /* Read the interrupt reason and the transfer length. */
1259: ireason = IN_BYTE (IDE_NSECTOR_REG);
1260: len = IN_BYTE (IDE_LCYL_REG) + 256 * IN_BYTE (IDE_HCYL_REG);
1261:
1262: /* If DRQ is clear, the command has completed.
1263: Complain if we still have data left to transfer. */
1264: if ((stat & DRQ_STAT) == 0) {
1265: /* Some of the trailing request sense fields are optional, and
1266: some drives don't send them. Sigh. */
1267: if (pc->c[0] == REQUEST_SENSE &&
1268: pc->buflen > 0 &&
1269: pc->buflen <= 5) {
1270: while (pc->buflen > 0) {
1271: *pc->buffer++ = 0;
1272: --pc->buflen;
1273: }
1274: }
1275:
1276: if (pc->buflen == 0)
1277: cdrom_end_request (1, drive);
1278: else {
1279: printk ("%s: cdrom_pc_intr: data underrun %d\n",
1280: drive->name, pc->buflen);
1281: pc->stat = 1;
1282: cdrom_end_request (1, drive);
1283: }
1284: return;
1285: }
1286:
1287: /* Figure out how much data to transfer. */
1288: thislen = pc->buflen;
1289: if (thislen < 0) thislen = -thislen;
1290: if (thislen > len) thislen = len;
1291:
1292: /* The drive wants to be written to. */
1293: if ((ireason & 3) == 0) {
1294: /* Check that we want to write. */
1295: if (pc->buflen > 0) {
1296: printk ("%s: cdrom_pc_intr: Drive wants "
1297: "to transfer data the wrong way!\n",
1298: drive->name);
1299: pc->stat = 1;
1300: thislen = 0;
1301: }
1302:
1303: /* Transfer the data. */
1304: cdrom_out_bytes (drive, pc->buffer, thislen);
1305:
1306: /* If we haven't moved enough data to satisfy the drive,
1307: add some padding. */
1308: while (len > thislen) {
1309: int dum = 0;
1310: cdrom_out_bytes (drive, &dum, sizeof (dum));
1311: len -= sizeof (dum);
1312: }
1313:
1314: /* Keep count of how much data we've moved. */
1315: pc->buffer += thislen;
1316: pc->buflen += thislen;
1317: }
1318:
1319: /* Same drill for reading. */
1320: else if ((ireason & 3) == 2) {
1321: /* Check that we want to read. */
1322: if (pc->buflen < 0) {
1323: printk ("%s: cdrom_pc_intr: Drive wants to "
1324: "transfer data the wrong way!\n",
1325: drive->name);
1326: pc->stat = 1;
1327: thislen = 0;
1328: }
1329:
1330: /* Transfer the data. */
1331: cdrom_in_bytes (drive, pc->buffer, thislen);
1332:
1333: /* If we haven't moved enough data to satisfy the drive,
1334: add some padding. */
1335: while (len > thislen) {
1336: int dum = 0;
1337: cdrom_in_bytes (drive, &dum, sizeof (dum));
1338: len -= sizeof (dum);
1339: }
1340:
1341: /* Keep count of how much data we've moved. */
1342: pc->buffer += thislen;
1343: pc->buflen -= thislen;
1344: } else {
1345: printk ("%s: cdrom_pc_intr: The drive "
1346: "appears confused (ireason = 0x%2x)\n",
1347: drive->name, ireason);
1348: pc->stat = 1;
1349: }
1350:
1351: /* Now we wait for another interrupt. */
1352: ide_set_handler (drive, &cdrom_pc_intr, WAIT_CMD);
1353: }
1354:
1355:
1356: static void cdrom_do_pc_continuation (ide_drive_t *drive)
1357: {
1358: struct request *rq = HWGROUP(drive)->rq;
1359: struct packet_command *pc = (struct packet_command *)rq->buffer;
1360:
1361: /* Send the command to the drive and return. */
1362: cdrom_transfer_packet_command (drive, pc->c,
1363: sizeof (pc->c), &cdrom_pc_intr);
1364: }
1365:
1366:
1367: static void cdrom_do_packet_command (ide_drive_t *drive)
1368: {
1369: int len;
1370: struct request *rq = HWGROUP(drive)->rq;
1371: struct packet_command *pc = (struct packet_command *)rq->buffer;
1372:
1373: len = pc->buflen;
1374: if (len < 0) len = -len;
1375:
1376: pc->stat = 0;
1377:
1378: /* Start sending the command to the drive. */
1379: cdrom_start_packet_command (drive, len, cdrom_do_pc_continuation);
1380: }
1381:
1382:
1383: /* Sleep for TIME jiffies.
1384: Not to be called from an interrupt handler. */
1385: static
1386: void cdrom_sleep (int time)
1387: {
1388: current->state = TASK_INTERRUPTIBLE;
1389: current->timeout = jiffies + time;
1390: schedule ();
1391: }
1392:
1393: static
1394: int cdrom_queue_packet_command (ide_drive_t *drive, struct packet_command *pc)
1395: {
1396: struct atapi_request_sense my_reqbuf;
1397: int retries = 10;
1398: struct request req;
1399:
1400: /* If our caller has not provided a place to stick any sense data,
1401: use our own area. */
1402: if (pc->sense_data == NULL)
1403: pc->sense_data = &my_reqbuf;
1404: pc->sense_data->sense_key = 0;
1405:
1406: /* Start of retry loop. */
1407: do {
1408: ide_init_drive_cmd (&req);
1409: req.cmd = PACKET_COMMAND;
1410: req.buffer = (char *)pc;
1411: (void) ide_do_drive_cmd (drive, &req, ide_wait);
1412:
1413: if (pc->stat != 0) {
1414: /* The request failed. Retry if it was due to a unit
1415: attention status
1416: (usually means media was changed). */
1417: struct atapi_request_sense *reqbuf = pc->sense_data;
1418:
1419: if (reqbuf->sense_key == UNIT_ATTENTION)
1420: ;
1421: else if (reqbuf->sense_key == NOT_READY &&
1422: reqbuf->asc == 4) {
1423: /* The drive is in the process of loading
1424: a disk. Retry, but wait a little to give
1425: the drive time to complete the load. */
1426: cdrom_sleep (HZ);
1427: } else
1428: /* Otherwise, don't retry. */
1429: retries = 0;
1430:
1431: --retries;
1432: }
1433:
1434: /* End of retry loop. */
1435: } while (pc->stat != 0 && retries >= 0);
1436:
1437:
1438: /* Return an error if the command failed. */
1439: if (pc->stat != 0)
1440: return -EIO;
1441: else {
1442: /* The command succeeded. If it was anything other than
1443: a request sense, eject, or door lock command,
1444: and we think that the door is presently, lock it again.
1445: (The door was probably unlocked via an explicit
1446: CDROMEJECT ioctl.) */
1447: if (CDROM_STATE_FLAGS (drive)->door_locked == 0 &&
1448: (pc->c[0] != REQUEST_SENSE &&
1449: pc->c[0] != ALLOW_MEDIUM_REMOVAL &&
1450: pc->c[0] != START_STOP)) {
1451: (void) cdrom_lockdoor (drive, 1, NULL);
1452: }
1453: return 0;
1454: }
1455: }
1456:
1457:
1458: /****************************************************************************
1459: * cdrom driver request routine.
1460: */
1461:
1462: void ide_do_rw_cdrom (ide_drive_t *drive, unsigned long block)
1463: {
1464: struct request *rq = HWGROUP(drive)->rq;
1465:
1466: if (rq -> cmd == PACKET_COMMAND || rq -> cmd == REQUEST_SENSE_COMMAND)
1467: cdrom_do_packet_command (drive);
1468: else if (rq -> cmd == RESET_DRIVE_COMMAND) {
1469: cdrom_end_request (1, drive);
1470: ide_do_reset (drive);
1471: return;
1472: } else if (rq -> cmd != READ) {
1473: printk ("ide-cd: bad cmd %d\n", rq -> cmd);
1474: cdrom_end_request (0, drive);
1475: } else
1476: cdrom_start_read (drive, block);
1477: }
1478:
1479:
1480:
1481: /****************************************************************************
1482: * Ioctl handling.
1483: *
1484: * Routines which queue packet commands take as a final argument a pointer
1485: * to an atapi_request_sense struct. If execution of the command results
1486: * in an error with a CHECK CONDITION status, this structure will be filled
1487: * with the results of the subsequent request sense command. The pointer
1488: * can also be NULL, in which case no sense information is returned.
1489: */
1490:
1491: #if ! STANDARD_ATAPI
1492: static inline
1493: int bin2bcd (int x)
1494: {
1495: return (x%10) | ((x/10) << 4);
1496: }
1497:
1498:
1499: static inline
1500: int bcd2bin (int x)
1501: {
1502: return (x >> 4) * 10 + (x & 0x0f);
1503: }
1504:
1505: static
1506: void msf_from_bcd (struct atapi_msf *msf)
1507: {
1508: msf->minute = bcd2bin (msf->minute);
1509: msf->second = bcd2bin (msf->second);
1510: msf->frame = bcd2bin (msf->frame);
1511: }
1512:
1513: #endif /* not STANDARD_ATAPI */
1514:
1515:
1516: static inline
1517: void lba_to_msf (int lba, byte *m, byte *s, byte *f)
1518: {
1519: lba += CD_BLOCK_OFFSET;
1520: lba &= 0xffffff; /* negative lbas use only 24 bits */
1521: *m = lba / (CD_SECS * CD_FRAMES);
1522: lba %= (CD_SECS * CD_FRAMES);
1523: *s = lba / CD_FRAMES;
1524: *f = lba % CD_FRAMES;
1525: }
1526:
1527:
1528: static inline
1529: int msf_to_lba (byte m, byte s, byte f)
1530: {
1531: return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_BLOCK_OFFSET;
1532: }
1533:
1534:
1535: static int
1536: cdrom_check_status (ide_drive_t *drive,
1537: struct atapi_request_sense *reqbuf)
1538: {
1539: struct packet_command pc;
1540:
1541: memset (&pc, 0, sizeof (pc));
1542:
1543: pc.sense_data = reqbuf;
1544: pc.c[0] = TEST_UNIT_READY;
1545:
1546: /* the Sanyo 3 CD changer uses byte 7 of TEST_UNIT_READY to
1547: switch CDs instead of supporting the LOAD_UNLOAD opcode */
1548:
1549: pc.c[7] = CDROM_STATE_FLAGS (drive)->sanyo_slot % 3;
1550:
1551: return cdrom_queue_packet_command (drive, &pc);
1552: }
1553:
1554:
1555: /* Lock the door if LOCKFLAG is nonzero; unlock it otherwise. */
1556: static int
1557: cdrom_lockdoor (ide_drive_t *drive, int lockflag,
1558: struct atapi_request_sense *reqbuf)
1559: {
1560: struct atapi_request_sense my_reqbuf;
1561: int stat;
1562: struct packet_command pc;
1563:
1564: if (reqbuf == NULL)
1565: reqbuf = &my_reqbuf;
1566:
1567: /* If the drive cannot lock the door, just pretend. */
1568: if (CDROM_CONFIG_FLAGS (drive)->no_doorlock)
1569: stat = 0;
1570: else {
1571: memset (&pc, 0, sizeof (pc));
1572: pc.sense_data = reqbuf;
1573:
1574: pc.c[0] = ALLOW_MEDIUM_REMOVAL;
1575: pc.c[4] = (lockflag != 0);
1576: stat = cdrom_queue_packet_command (drive, &pc);
1577: }
1578:
1579: if (stat == 0)
1580: CDROM_STATE_FLAGS (drive)->door_locked = lockflag;
1581: else {
1582: /* If we got an illegal field error, the drive
1583: probably cannot lock the door. */
1584: if (reqbuf->sense_key == ILLEGAL_REQUEST &&
1585: (reqbuf->asc == 0x24 || reqbuf->asc == 0x20)) {
1586: printk ("%s: door locking not supported\n",
1587: drive->name);
1588: CDROM_CONFIG_FLAGS (drive)->no_doorlock = 1;
1589: stat = 0;
1590: CDROM_STATE_FLAGS (drive)->door_locked = lockflag;
1591: }
1592: }
1593: return stat;
1594: }
1595:
1596:
1597: /* Eject the disk if EJECTFLAG is 0.
1598: If EJECTFLAG is 1, try to reload the disk. */
1599: static int
1600: cdrom_eject (ide_drive_t *drive, int ejectflag,
1601: struct atapi_request_sense *reqbuf)
1602: {
1603: struct packet_command pc;
1604:
1605: memset (&pc, 0, sizeof (pc));
1606: pc.sense_data = reqbuf;
1607:
1608: pc.c[0] = START_STOP;
1609: pc.c[4] = 2 + (ejectflag != 0);
1610: return cdrom_queue_packet_command (drive, &pc);
1611: }
1612:
1613:
1614: static int
1615: cdrom_pause (ide_drive_t *drive, int pauseflag,
1616: struct atapi_request_sense *reqbuf)
1617: {
1618: struct packet_command pc;
1619:
1620: memset (&pc, 0, sizeof (pc));
1621: pc.sense_data = reqbuf;
1622:
1623: pc.c[0] = SCMD_PAUSE_RESUME;
1624: pc.c[8] = !pauseflag;
1625: return cdrom_queue_packet_command (drive, &pc);
1626: }
1627:
1628:
1629: static int
1630: cdrom_startstop (ide_drive_t *drive, int startflag,
1631: struct atapi_request_sense *reqbuf)
1632: {
1633: struct packet_command pc;
1634:
1635: memset (&pc, 0, sizeof (pc));
1636: pc.sense_data = reqbuf;
1637:
1638: pc.c[0] = START_STOP;
1639: pc.c[1] = 1;
1640: pc.c[4] = startflag;
1641: return cdrom_queue_packet_command (drive, &pc);
1642: }
1643:
1644:
1645: static int
1646: cdrom_read_capacity (ide_drive_t *drive, unsigned *capacity,
1647: struct atapi_request_sense *reqbuf)
1648: {
1649: struct {
1650: unsigned lba;
1651: unsigned blocklen;
1652: } capbuf;
1653:
1654: int stat;
1655: struct packet_command pc;
1656:
1657: memset (&pc, 0, sizeof (pc));
1658: pc.sense_data = reqbuf;
1659:
1660: pc.c[0] = READ_CAPACITY;
1661: pc.buffer = (char *)&capbuf;
1662: pc.buflen = sizeof (capbuf);
1663:
1664: stat = cdrom_queue_packet_command (drive, &pc);
1665: if (stat == 0)
1666: *capacity = ntohl (capbuf.lba);
1667:
1668: return stat;
1669: }
1670:
1671:
1672: static int
1673: cdrom_read_tocentry (ide_drive_t *drive, int trackno, int msf_flag,
1674: int format, char *buf, int buflen,
1675: struct atapi_request_sense *reqbuf)
1676: {
1677: struct packet_command pc;
1678:
1679: memset (&pc, 0, sizeof (pc));
1680: pc.sense_data = reqbuf;
1681:
1682: pc.buffer = buf;
1683: pc.buflen = buflen;
1684: pc.c[0] = SCMD_READ_TOC;
1685: pc.c[6] = trackno;
1686: pc.c[7] = (buflen >> 8);
1687: pc.c[8] = (buflen & 0xff);
1688: pc.c[9] = (format << 6);
1689: if (msf_flag) pc.c[1] = 2;
1690: return cdrom_queue_packet_command (drive, &pc);
1691: }
1692:
1693:
1694: /* Try to read the entire TOC for the disk into our internal buffer. */
1695: static int
1696: cdrom_read_toc (ide_drive_t *drive,
1697: struct atapi_request_sense *reqbuf)
1698: {
1699: int stat, ntracks, i;
1700: struct atapi_toc *toc = drive->cdrom_info.toc;
1701: struct {
1702: struct atapi_toc_header hdr;
1703: struct atapi_toc_entry ent;
1704: } ms_tmp;
1705:
1706: if (toc == NULL) {
1707: /* Try to allocate space. */
1708: toc = (struct atapi_toc *) kmalloc (sizeof (struct atapi_toc),
1709: GFP_KERNEL);
1710: drive->cdrom_info.toc = toc;
1711: }
1712:
1713: if (toc == NULL) {
1714: printk ("%s: No cdrom TOC buffer!\n", drive->name);
1715: return -EIO;
1716: }
1717:
1718: /* Check to see if the existing data is still valid.
1719: If it is, just return. */
1720: if (CDROM_STATE_FLAGS (drive)->toc_valid)
1721: (void) cdrom_check_status (drive, NULL);
1722:
1723: if (CDROM_STATE_FLAGS (drive)->toc_valid) return 0;
1724:
1725: /* First read just the header, so we know how long the TOC is. */
1726: stat = cdrom_read_tocentry (drive, 0, 1, 0, (char *)&toc->hdr,
1727: sizeof (struct atapi_toc_header) +
1728: sizeof (struct atapi_toc_entry),
1729: reqbuf);
1730: if (stat) return stat;
1731:
1732: #if ! STANDARD_ATAPI
1733: if (CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd) {
1734: toc->hdr.first_track = bcd2bin (toc->hdr.first_track);
1735: toc->hdr.last_track = bcd2bin (toc->hdr.last_track);
1736: }
1737: #endif /* not STANDARD_ATAPI */
1738:
1739: ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1740: if (ntracks <= 0) return -EIO;
1741: if (ntracks > MAX_TRACKS) ntracks = MAX_TRACKS;
1742:
1743: /* Now read the whole schmeer. */
1744: stat = cdrom_read_tocentry (drive, 0, 1, 0, (char *)&toc->hdr,
1745: sizeof (struct atapi_toc_header) +
1746: (ntracks+1) *
1747: sizeof (struct atapi_toc_entry),
1748: reqbuf);
1749: if (stat) return stat;
1750: toc->hdr.toc_length = ntohs (toc->hdr.toc_length);
1751:
1752: #if ! STANDARD_ATAPI
1753: if (CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd) {
1754: toc->hdr.first_track = bcd2bin (toc->hdr.first_track);
1755: toc->hdr.last_track = bcd2bin (toc->hdr.last_track);
1756: }
1757: #endif /* not STANDARD_ATAPI */
1758:
1759: for (i=0; i<=ntracks; i++) {
1760: #if ! STANDARD_ATAPI
1761: if (CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd) {
1762: if (CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd)
1763: toc->ent[i].track = bcd2bin (toc->ent[i].track);
1764: msf_from_bcd (&toc->ent[i].addr.msf);
1765: }
1766: #endif /* not STANDARD_ATAPI */
1767: toc->ent[i].addr.lba = msf_to_lba (toc->ent[i].addr.msf.minute,
1768: toc->ent[i].addr.msf.second,
1769: toc->ent[i].addr.msf.frame);
1770: }
1771:
1772: /* Read the multisession information. */
1773: stat = cdrom_read_tocentry (drive, 0, 1, 1,
1774: (char *)&ms_tmp, sizeof (ms_tmp),
1775: reqbuf);
1776: if (stat) return stat;
1777:
1778: #if ! STANDARD_ATAPI
1779: if (CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd)
1780: msf_from_bcd (&ms_tmp.ent.addr.msf);
1781: #endif /* not STANDARD_ATAPI */
1782:
1783: toc->last_session_lba = msf_to_lba (ms_tmp.ent.addr.msf.minute,
1784: ms_tmp.ent.addr.msf.second,
1785: ms_tmp.ent.addr.msf.frame);
1786:
1787: toc->xa_flag = (ms_tmp.hdr.first_track != ms_tmp.hdr.last_track);
1788:
1789: /* Now try to get the total cdrom capacity. */
1790: stat = cdrom_read_capacity (drive, &toc->capacity, reqbuf);
1791: if (stat) toc->capacity = 0x1fffff;
1792:
1793: HWIF(drive)->gd->sizes[drive->select.b.unit << PARTN_BITS]
1794: = toc->capacity * SECTORS_PER_FRAME;
1795: drive->part[0].nr_sects = toc->capacity * SECTORS_PER_FRAME;
1796:
1797: /* Remember that we've read this stuff. */
1798: CDROM_STATE_FLAGS (drive)->toc_valid = 1;
1799:
1800: return 0;
1801: }
1802:
1803:
1804: static int
1805: cdrom_read_subchannel (ide_drive_t *drive, int format,
1806: char *buf, int buflen,
1807: struct atapi_request_sense *reqbuf)
1808: {
1809: struct packet_command pc;
1810:
1811: memset (&pc, 0, sizeof (pc));
1812: pc.sense_data = reqbuf;
1813:
1814: pc.buffer = buf;
1815: pc.buflen = buflen;
1816: pc.c[0] = SCMD_READ_SUBCHANNEL;
1817: pc.c[1] = 2; /* MSF addressing */
1818: pc.c[2] = 0x40; /* request subQ data */
1819: pc.c[3] = format,
1820: pc.c[7] = (buflen >> 8);
1821: pc.c[8] = (buflen & 0xff);
1822: return cdrom_queue_packet_command (drive, &pc);
1823: }
1824:
1825:
1826: /* modeflag: 0 = current, 1 = changeable mask, 2 = default, 3 = saved */
1827: static int
1828: cdrom_mode_sense (ide_drive_t *drive, int pageno, int modeflag,
1829: char *buf, int buflen,
1830: struct atapi_request_sense *reqbuf)
1831: {
1832: struct packet_command pc;
1833:
1834: memset (&pc, 0, sizeof (pc));
1835: pc.sense_data = reqbuf;
1836:
1837: pc.buffer = buf;
1838: pc.buflen = buflen;
1839: pc.c[0] = MODE_SENSE_10;
1840: pc.c[2] = pageno | (modeflag << 6);
1841: pc.c[7] = (buflen >> 8);
1842: pc.c[8] = (buflen & 0xff);
1843: return cdrom_queue_packet_command (drive, &pc);
1844: }
1845:
1846:
1847: static int
1848: cdrom_mode_select (ide_drive_t *drive, int pageno, char *buf, int buflen,
1849: struct atapi_request_sense *reqbuf)
1850: {
1851: struct packet_command pc;
1852:
1853: memset (&pc, 0, sizeof (pc));
1854: pc.sense_data = reqbuf;
1855:
1856: pc.buffer = buf;
1857: pc.buflen = - buflen;
1858: pc.c[0] = MODE_SELECT_10;
1859: pc.c[1] = 0x10;
1860: pc.c[2] = pageno;
1861: pc.c[7] = (buflen >> 8);
1862: pc.c[8] = (buflen & 0xff);
1863: return cdrom_queue_packet_command (drive, &pc);
1864: }
1865:
1866:
1867: static int
1868: cdrom_play_lba_range_1 (ide_drive_t *drive, int lba_start, int lba_end,
1869: struct atapi_request_sense *reqbuf)
1870: {
1871: struct packet_command pc;
1872:
1873: memset (&pc, 0, sizeof (pc));
1874: pc.sense_data = reqbuf;
1875:
1876: pc.c[0] = SCMD_PLAYAUDIO_MSF;
1877: lba_to_msf (lba_start, &pc.c[3], &pc.c[4], &pc.c[5]);
1878: lba_to_msf (lba_end-1, &pc.c[6], &pc.c[7], &pc.c[8]);
1879:
1880: #if ! STANDARD_ATAPI
1881: if (CDROM_CONFIG_FLAGS (drive)->playmsf_as_bcd) {
1882: pc.c[3] = bin2bcd (pc.c[3]);
1883: pc.c[4] = bin2bcd (pc.c[4]);
1884: pc.c[5] = bin2bcd (pc.c[5]);
1885: pc.c[6] = bin2bcd (pc.c[6]);
1886: pc.c[7] = bin2bcd (pc.c[7]);
1887: pc.c[8] = bin2bcd (pc.c[8]);
1888: }
1889: #endif /* not STANDARD_ATAPI */
1890:
1891: return cdrom_queue_packet_command (drive, &pc);
1892: }
1893:
1894:
1895: /* Play audio starting at LBA LBA_START and finishing with the
1896: LBA before LBA_END. */
1897: static int
1898: cdrom_play_lba_range (ide_drive_t *drive, int lba_start, int lba_end,
1899: struct atapi_request_sense *reqbuf)
1900: {
1901: int i, stat;
1902: struct atapi_request_sense my_reqbuf;
1903:
1904: if (reqbuf == NULL)
1905: reqbuf = &my_reqbuf;
1906:
1907: /* Some drives, will, for certain audio cds,
1908: give an error if you ask them to play the entire cd using the
1909: values which are returned in the TOC. The play will succeed,
1910: however, if the ending address is adjusted downwards
1911: by a few frames. */
1912: for (i=0; i<75; i++) {
1913: stat = cdrom_play_lba_range_1 (drive, lba_start, lba_end,
1914: reqbuf);
1915:
1916: if (stat == 0 ||
1917: !(reqbuf->sense_key == ILLEGAL_REQUEST &&
1918: reqbuf->asc == 0x24))
1919: return stat;
1920:
1921: --lba_end;
1922: if (lba_end <= lba_start) break;
1923: }
1924:
1925: return stat;
1926: }
1927:
1928:
1929: static
1930: int cdrom_get_toc_entry (ide_drive_t *drive, int track,
1931: struct atapi_toc_entry **ent,
1932: struct atapi_request_sense *reqbuf)
1933: {
1934: int stat, ntracks;
1935: struct atapi_toc *toc;
1936:
1937: /* Make sure our saved TOC is valid. */
1938: stat = cdrom_read_toc (drive, reqbuf);
1939: if (stat) return stat;
1940:
1941: toc = drive->cdrom_info.toc;
1942:
1943: /* Check validity of requested track number. */
1944: ntracks = toc->hdr.last_track - toc->hdr.first_track + 1;
1945: if (track == CDROM_LEADOUT)
1946: *ent = &toc->ent[ntracks];
1947: else if (track < toc->hdr.first_track ||
1948: track > toc->hdr.last_track)
1949: return -EINVAL;
1950: else
1951: *ent = &toc->ent[track - toc->hdr.first_track];
1952:
1953: return 0;
1954: }
1955:
1956:
1957: static int
1958: cdrom_read_block (ide_drive_t *drive, int format, int lba, int nblocks,
1959: char *buf, int buflen,
1960: struct atapi_request_sense *reqbuf)
1961: {
1962: struct packet_command pc;
1963: struct atapi_request_sense my_reqbuf;
1964: int stat;
1965:
1966: if (reqbuf == NULL)
1967: reqbuf = &my_reqbuf;
1968:
1969: memset (&pc, 0, sizeof (pc));
1970: pc.sense_data = reqbuf;
1971:
1972: pc.buffer = buf;
1973: pc.buflen = buflen;
1974:
1975: #if ! STANDARD_ATAPI
1976: if (CDROM_CONFIG_FLAGS (drive)->old_readcd)
1977: pc.c[0] = 0xd4;
1978: else
1979: #endif /* not STANDARD_ATAPI */
1980: pc.c[0] = READ_CD;
1981:
1982: pc.c[1] = (format << 2);
1983: put_unaligned(htonl(lba), (unsigned int *) &pc.c[2]);
1984: pc.c[8] = (nblocks & 0xff);
1985: pc.c[7] = ((nblocks>>8) & 0xff);
1986: pc.c[6] = ((nblocks>>16) & 0xff);
1987: if (format <= 1)
1988: pc.c[9] = 0xf8;
1989: else
1990: pc.c[9] = 0x10;
1991:
1992: stat = cdrom_queue_packet_command (drive, &pc);
1993:
1994: #if ! STANDARD_ATAPI
1995: /* If the drive doesn't recognize the READ CD opcode, retry the command
1996: with an older opcode for that command. */
1997: if (stat && reqbuf->sense_key == ILLEGAL_REQUEST &&
1998: reqbuf->asc == 0x20 &&
1999: CDROM_CONFIG_FLAGS (drive)->old_readcd == 0) {
2000: printk ("%s: Drive does not recognize READ_CD;"
2001: "trying opcode 0xd4\n",
2002: drive->name);
2003: CDROM_CONFIG_FLAGS (drive)->old_readcd = 1;
2004: return cdrom_read_block (drive, format, lba, nblocks,
2005: buf, buflen, reqbuf);
2006: }
2007: #endif /* not STANDARD_ATAPI */
2008:
2009: return stat;
2010: }
2011:
2012:
2013: /* If SLOT<0, unload the current slot. Otherwise, try to load SLOT. */
2014: static int
2015: cdrom_load_unload (ide_drive_t *drive, int slot,
2016: struct atapi_request_sense *reqbuf)
2017: {
2018: /* if the drive is a Sanyo 3 CD changer then TEST_UNIT_READY
2019: (used in the cdrom_check_status function) is used to
2020: switch CDs instead of LOAD_UNLOAD */
2021:
2022: if (CDROM_STATE_FLAGS (drive)->sanyo_slot > 0) {
2023:
2024: if ((slot == 1) || (slot == 2)) {
2025: CDROM_STATE_FLAGS (drive)->sanyo_slot = slot;
2026: } else if (slot >= 0) {
2027: CDROM_STATE_FLAGS (drive)->sanyo_slot = 3;
2028: } else {
2029: return 0;
2030: }
2031:
2032: return cdrom_check_status (drive, NULL);
2033:
2034: } else {
2035:
2036: /* ATAPI Rev. 2.2+ standard for requesting switching of
2037: CDs in a multiplatter device */
2038:
2039: struct packet_command pc;
2040:
2041: memset (&pc, 0, sizeof (pc));
2042: pc.sense_data = reqbuf;
2043:
2044: pc.c[0] = LOAD_UNLOAD;
2045: pc.c[4] = 2 + (slot >= 0);
2046: pc.c[8] = slot;
2047: return cdrom_queue_packet_command (drive, &pc);
2048:
2049: }
2050: }
2051:
2052:
2053: int ide_cdrom_ioctl (ide_drive_t *drive, struct inode *inode,
2054: struct file *file, unsigned int cmd, unsigned long arg)
2055: {
2056: switch (cmd) {
2057: case CDROMEJECT: {
2058: int stat;
2059:
2060: if (drive->usage > 1)
2061: return -EBUSY;
2062:
2063: stat = cdrom_lockdoor (drive, 0, NULL);
2064: if (stat) return stat;
2065:
2066: return cdrom_eject (drive, 0, NULL);
2067: }
2068:
2069: case CDROMCLOSETRAY: {
2070: int stat;
2071: if (drive->usage > 1)
2072: return -EBUSY;
2073:
2074: stat = cdrom_eject (drive, 1, NULL);
2075: if (stat) return stat;
2076:
2077: return cdrom_lockdoor (drive, 1, NULL);
2078: }
2079:
2080: case CDROMEJECT_SW: {
2081: CDROM_STATE_FLAGS (drive)->eject_on_close = arg;
2082: return 0;
2083: }
2084:
2085: case CDROMPAUSE:
2086: return cdrom_pause (drive, 1, NULL);
2087:
2088: case CDROMRESUME:
2089: return cdrom_pause (drive, 0, NULL);
2090:
2091: case CDROMSTART:
2092: return cdrom_startstop (drive, 1, NULL);
2093:
2094: case CDROMSTOP: {
2095: #ifdef IHAVEADOLPHIN
2096: /* Certain Drives require this. Most don't
2097: and will produce errors upon CDROMSTOP
2098: pit says the Dolphin needs this. If you
2099: own a dolphin, just define IHAVEADOLPHIN somewhere */
2100: int stat;
2101: stat = cdrom_startstop (drive, 0, NULL);
2102: if (stat) return stat;
2103: return cdrom_eject (drive, 1, NULL);
2104: #endif /* end of IHAVEADOLPHIN */
2105: return cdrom_startstop (drive, 0, NULL);
2106: }
2107:
2108: case CDROMPLAYMSF: {
2109: struct cdrom_msf msf;
2110: int stat, lba_start, lba_end;
2111:
2112: stat = verify_area (VERIFY_READ, (void *)arg, sizeof (msf));
2113: if (stat) return stat;
2114:
2115: memcpy_fromfs (&msf, (void *) arg, sizeof(msf));
2116:
2117: lba_start = msf_to_lba (msf.cdmsf_min0, msf.cdmsf_sec0,
2118: msf.cdmsf_frame0);
2119: lba_end = msf_to_lba (msf.cdmsf_min1, msf.cdmsf_sec1,
2120: msf.cdmsf_frame1) + 1;
2121:
2122: if (lba_end <= lba_start) return -EINVAL;
2123:
2124: return cdrom_play_lba_range (drive, lba_start, lba_end, NULL);
2125: }
2126:
2127: /* Like just about every other Linux cdrom driver, we ignore the
2128: index part of the request here. */
2129: case CDROMPLAYTRKIND: {
2130: int stat, lba_start, lba_end;
2131: struct cdrom_ti ti;
2132: struct atapi_toc_entry *first_toc, *last_toc;
2133:
2134: stat = verify_area (VERIFY_READ, (void *)arg, sizeof (ti));
2135: if (stat) return stat;
2136:
2137: memcpy_fromfs (&ti, (void *) arg, sizeof(ti));
2138:
2139: stat = cdrom_get_toc_entry (drive, ti.cdti_trk0, &first_toc,
2140: NULL);
2141: if (stat) return stat;
2142: stat = cdrom_get_toc_entry (drive, ti.cdti_trk1, &last_toc,
2143: NULL);
2144: if (stat) return stat;
2145:
2146: if (ti.cdti_trk1 != CDROM_LEADOUT) ++last_toc;
2147: lba_start = first_toc->addr.lba;
2148: lba_end = last_toc->addr.lba;
2149:
2150: if (lba_end <= lba_start) return -EINVAL;
2151:
2152: return cdrom_play_lba_range (drive, lba_start, lba_end, NULL);
2153: }
2154:
2155: case CDROMREADTOCHDR: {
2156: int stat;
2157: struct cdrom_tochdr tochdr;
2158: struct atapi_toc *toc;
2159:
2160: stat = verify_area (VERIFY_WRITE, (void *) arg,
2161: sizeof (tochdr));
2162: if (stat) return stat;
2163:
2164: /* Make sure our saved TOC is valid. */
2165: stat = cdrom_read_toc (drive, NULL);
2166: if (stat) return stat;
2167:
2168: toc = drive->cdrom_info.toc;
2169: tochdr.cdth_trk0 = toc->hdr.first_track;
2170: tochdr.cdth_trk1 = toc->hdr.last_track;
2171:
2172: memcpy_tofs ((void *) arg, &tochdr, sizeof (tochdr));
2173:
2174: return stat;
2175: }
2176:
2177: case CDROMREADTOCENTRY: {
2178: int stat;
2179: struct cdrom_tocentry tocentry;
2180: struct atapi_toc_entry *toce;
2181:
2182: stat = verify_area (VERIFY_WRITE, (void *) arg,
2183: sizeof (tocentry));
2184: if (stat) return stat;
2185:
2186: memcpy_fromfs (&tocentry, (void *) arg, sizeof (tocentry));
2187:
2188: stat = cdrom_get_toc_entry (drive, tocentry.cdte_track, &toce,
2189: NULL);
2190: if (stat) return stat;
2191:
2192: tocentry.cdte_ctrl = toce->control;
2193: tocentry.cdte_adr = toce->adr;
2194:
2195: if (tocentry.cdte_format == CDROM_MSF) {
2196: /* convert to MSF */
2197: lba_to_msf (toce->addr.lba,
2198: &tocentry.cdte_addr.msf.minute,
2199: &tocentry.cdte_addr.msf.second,
2200: &tocentry.cdte_addr.msf.frame);
2201: } else
2202: tocentry.cdte_addr.lba = toce->addr.lba;
2203:
2204: memcpy_tofs ((void *) arg, &tocentry, sizeof (tocentry));
2205:
2206: return stat;
2207: }
2208:
2209: case CDROMSUBCHNL: {
2210: struct atapi_cdrom_subchnl scbuf;
2211: int stat;
2212: struct cdrom_subchnl subchnl;
2213:
2214: stat = verify_area (VERIFY_WRITE, (void *) arg,
2215: sizeof (subchnl));
2216: if (stat) return stat;
2217:
2218: memcpy_fromfs (&subchnl, (void *) arg, sizeof (subchnl));
2219:
2220: stat = cdrom_read_subchannel (drive, 1, /* current position */
2221: (char *)&scbuf, sizeof (scbuf),
2222: NULL);
2223: if (stat) return stat;
2224:
2225: #if ! STANDARD_ATAPI
2226: if (CDROM_CONFIG_FLAGS (drive)->subchan_as_bcd) {
2227: msf_from_bcd (&scbuf.acdsc_absaddr.msf);
2228: msf_from_bcd (&scbuf.acdsc_reladdr.msf);
2229: }
2230: if (CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd)
2231: scbuf.acdsc_trk = bcd2bin (scbuf.acdsc_trk);
2232: #endif /* not STANDARD_ATAPI */
2233:
2234: if (subchnl.cdsc_format == CDROM_MSF) {
2235: subchnl.cdsc_absaddr.msf.minute =
2236: scbuf.acdsc_absaddr.msf.minute;
2237: subchnl.cdsc_absaddr.msf.second =
2238: scbuf.acdsc_absaddr.msf.second;
2239: subchnl.cdsc_absaddr.msf.frame =
2240: scbuf.acdsc_absaddr.msf.frame;
2241:
2242: subchnl.cdsc_reladdr.msf.minute =
2243: scbuf.acdsc_reladdr.msf.minute;
2244: subchnl.cdsc_reladdr.msf.second =
2245: scbuf.acdsc_reladdr.msf.second;
2246: subchnl.cdsc_reladdr.msf.frame =
2247: scbuf.acdsc_reladdr.msf.frame;
2248: } else {
2249: subchnl.cdsc_absaddr.lba =
2250: msf_to_lba (scbuf.acdsc_absaddr.msf.minute,
2251: scbuf.acdsc_absaddr.msf.second,
2252: scbuf.acdsc_absaddr.msf.frame);
2253: subchnl.cdsc_reladdr.lba =
2254: msf_to_lba (scbuf.acdsc_reladdr.msf.minute,
2255: scbuf.acdsc_reladdr.msf.second,
2256: scbuf.acdsc_reladdr.msf.frame);
2257: }
2258:
2259: subchnl.cdsc_audiostatus = scbuf.acdsc_audiostatus;
2260: subchnl.cdsc_ctrl = scbuf.acdsc_ctrl;
2261: subchnl.cdsc_trk = scbuf.acdsc_trk;
2262: subchnl.cdsc_ind = scbuf.acdsc_ind;
2263:
2264: memcpy_tofs ((void *) arg, &subchnl, sizeof (subchnl));
2265:
2266: return stat;
2267: }
2268:
2269: case CDROMVOLCTRL: {
2270: struct cdrom_volctrl volctrl;
2271: char buffer[24], mask[24];
2272: int stat;
2273:
2274: stat = verify_area (VERIFY_READ, (void *) arg,
2275: sizeof (volctrl));
2276: if (stat) return stat;
2277: memcpy_fromfs (&volctrl, (void *) arg, sizeof (volctrl));
2278:
2279: stat = cdrom_mode_sense (drive, 0x0e, 0, buffer,
2280: sizeof (buffer), NULL);
2281: if (stat) return stat;
2282: stat = cdrom_mode_sense (drive, 0x0e, 1, mask,
2283: sizeof (buffer), NULL);
2284: if (stat) return stat;
2285:
2286: buffer[1] = buffer[2] = 0;
2287:
2288: buffer[17] = volctrl.channel0 & mask[17];
2289: buffer[19] = volctrl.channel1 & mask[19];
2290: buffer[21] = volctrl.channel2 & mask[21];
2291: buffer[23] = volctrl.channel3 & mask[23];
2292:
2293: return cdrom_mode_select (drive, 0x0e, buffer,
2294: sizeof (buffer), NULL);
2295: }
2296:
2297: case CDROMVOLREAD: {
2298: struct cdrom_volctrl volctrl;
2299: char buffer[24];
2300: int stat;
2301:
2302: stat = verify_area (VERIFY_WRITE, (void *) arg,
2303: sizeof (volctrl));
2304: if (stat) return stat;
2305:
2306: stat = cdrom_mode_sense (drive, 0x0e, 0, buffer,
2307: sizeof (buffer), NULL);
2308: if (stat) return stat;
2309:
2310: volctrl.channel0 = buffer[17];
2311: volctrl.channel1 = buffer[19];
2312: volctrl.channel2 = buffer[21];
2313: volctrl.channel3 = buffer[23];
2314:
2315: memcpy_tofs ((void *) arg, &volctrl, sizeof (volctrl));
2316:
2317: return 0;
2318: }
2319:
2320: case CDROMMULTISESSION: {
2321: struct cdrom_multisession ms_info;
2322: struct atapi_toc *toc;
2323: int stat;
2324:
2325: stat = verify_area (VERIFY_WRITE, (void *)arg,
2326: sizeof (ms_info));
2327: if (stat) return stat;
2328:
2329: memcpy_fromfs (&ms_info, (void *)arg, sizeof (ms_info));
2330:
2331: /* Make sure the TOC information is valid. */
2332: stat = cdrom_read_toc (drive, NULL);
2333: if (stat) return stat;
2334:
2335: toc = drive->cdrom_info.toc;
2336:
2337: if (ms_info.addr_format == CDROM_MSF)
2338: lba_to_msf (toc->last_session_lba,
2339: &ms_info.addr.msf.minute,
2340: &ms_info.addr.msf.second,
2341: &ms_info.addr.msf.frame);
2342: else if (ms_info.addr_format == CDROM_LBA)
2343: ms_info.addr.lba = toc->last_session_lba;
2344: else
2345: return -EINVAL;
2346:
2347: ms_info.xa_flag = toc->xa_flag;
2348:
2349: memcpy_tofs ((void *)arg, &ms_info, sizeof (ms_info));
2350:
2351: return 0;
2352: }
2353:
2354: /* Read 2352 byte blocks from audio tracks. */
2355: case CDROMREADAUDIO: {
2356: int stat, lba;
2357: struct atapi_toc *toc;
2358: struct cdrom_read_audio ra;
2359: char *buf;
2360:
2361: /* Make sure the TOC is up to date. */
2362: stat = cdrom_read_toc (drive, NULL);
2363: if (stat) return stat;
2364:
2365: toc = drive->cdrom_info.toc;
2366:
2367: stat = verify_area (VERIFY_READ, (char *)arg, sizeof (ra));
2368: if (stat) return stat;
2369:
2370: memcpy_fromfs (&ra, (void *)arg, sizeof (ra));
2371:
2372: if (ra.nframes < 0 || ra.nframes > toc->capacity)
2373: return -EINVAL;
2374: else if (ra.nframes == 0)
2375: return 0;
2376:
2377: stat = verify_area (VERIFY_WRITE, (char *)ra.buf,
2378: ra.nframes * CD_FRAMESIZE_RAW);
2379: if (stat) return stat;
2380:
2381: if (ra.addr_format == CDROM_MSF)
2382: lba = msf_to_lba (ra.addr.msf.minute,
2383: ra.addr.msf.second,
2384: ra.addr.msf.frame);
2385: else if (ra.addr_format == CDROM_LBA)
2386: lba = ra.addr.lba;
2387: else
2388: return -EINVAL;
2389:
2390: if (lba < 0 || lba >= toc->capacity)
2391: return -EINVAL;
2392:
2393: buf = (char *) kmalloc (CDROM_NBLOCKS_BUFFER*CD_FRAMESIZE_RAW,
2394: GFP_KERNEL);
2395: if (buf == NULL)
2396: return -ENOMEM;
2397:
2398: while (ra.nframes > 0) {
2399: int this_nblocks = ra.nframes;
2400: if (this_nblocks > CDROM_NBLOCKS_BUFFER)
2401: this_nblocks = CDROM_NBLOCKS_BUFFER;
2402: stat = cdrom_read_block
2403: (drive, 1, lba, this_nblocks,
2404: buf, this_nblocks * CD_FRAMESIZE_RAW, NULL);
2405: if (stat) break;
2406:
2407: memcpy_tofs (ra.buf, buf,
2408: this_nblocks * CD_FRAMESIZE_RAW);
2409: ra.buf += this_nblocks * CD_FRAMESIZE_RAW;
2410: ra.nframes -= this_nblocks;
2411: lba += this_nblocks;
2412: }
2413:
2414: kfree (buf);
2415: return stat;
2416: }
2417: case CDROMREADRAW:
2418: case CDROMREADMODE1:
2419: case CDROMREADMODE2: {
2420: struct cdrom_msf msf;
2421: int blocksize, format, stat, lba;
2422: char *buf;
2423:
2424: if (cmd == CDROMREADMODE1) {
2425: blocksize = CD_FRAMESIZE;
2426: format = 2;
2427: } else if (cmd == CDROMREADMODE2) {
2428: blocksize = CD_FRAMESIZE_RAW0;
2429: format = 3;
2430: } else {
2431: blocksize = CD_FRAMESIZE_RAW;
2432: format = 0;
2433: }
2434:
2435: stat = verify_area (VERIFY_WRITE, (char *)arg, blocksize);
2436: if (stat) return stat;
2437:
2438: memcpy_fromfs (&msf, (void *)arg, sizeof (msf));
2439:
2440: lba = msf_to_lba (msf.cdmsf_min0,
2441: msf.cdmsf_sec0,
2442: msf.cdmsf_frame0);
2443:
2444: /* DON'T make sure the TOC is up to date. */
2445: /* stat = cdrom_read_toc (drive, NULL);
2446: if (stat) return stat;
2447:
2448: toc = drive->cdrom_info.toc;
2449:
2450: if (lba < 0 || lba >= toc->capacity)
2451: return -EINVAL; */
2452:
2453: buf = (char *) kmalloc (CD_FRAMESIZE_RAW, GFP_KERNEL);
2454: if (buf == NULL)
2455: return -ENOMEM;
2456:
2457: stat = cdrom_read_block (drive, format, lba, 1, buf, blocksize,
2458: NULL);
2459: if (stat == 0)
2460: memcpy_tofs ((char *)arg, buf, blocksize);
2461:
2462: kfree (buf);
2463: return stat;
2464: }
2465:
2466: case CDROM_GET_UPC: {
2467: int stat;
2468: char mcnbuf[24];
2469: struct cdrom_mcn mcn;
2470:
2471: stat = verify_area (VERIFY_WRITE, (void *) arg,
2472: sizeof (mcn));
2473: if (stat) return stat;
2474:
2475: stat = cdrom_read_subchannel (drive, 2, /* get MCN */
2476: mcnbuf, sizeof (mcnbuf),
2477: NULL);
2478: if (stat) return stat;
2479:
2480: memcpy (mcn.medium_catalog_number, mcnbuf+9,
2481: sizeof (mcn.medium_catalog_number)-1);
2482: mcn.medium_catalog_number[sizeof (mcn.medium_catalog_number)-1]
2483: = '\0';
2484:
2485: memcpy_tofs ((void *) arg, &mcn, sizeof (mcn));
2486:
2487: return stat;
2488: }
2489:
2490: case CDROMLOADFROMSLOT:
2491: printk ("%s: Use CDROM_SELECT_DISC "
2492: " instead of CDROMLOADFROMSLOT.\n", drive->name);
2493: /* Fall through. */
2494:
2495: case CDROM_SELECT_DISC: {
2496: struct atapi_request_sense my_reqbuf;
2497: int stat;
2498:
2499: if (drive->usage > 1)
2500: return -EBUSY;
2501:
2502: (void) cdrom_load_unload (drive, -1, NULL);
2503:
2504: cdrom_saw_media_change (drive);
2505: if (arg == -1) {
2506: (void) cdrom_lockdoor (drive, 0, NULL);
2507: return 0;
2508: }
2509: (void) cdrom_load_unload (drive, (int)arg, NULL);
2510:
2511: stat = cdrom_check_status (drive, &my_reqbuf);
2512: if (stat && my_reqbuf.sense_key == NOT_READY) {
2513: return -ENOENT;
2514: }
2515:
2516: /* And try to read the TOC information now. */
2517: return cdrom_read_toc (drive, &my_reqbuf);
2518: }
2519:
2520: #if 0 /* Doesn't work reliably yet. */
2521: case CDROMRESET: {
2522: struct request req;
2523: ide_init_drive_cmd (&req);
2524: req.cmd = RESET_DRIVE_COMMAND;
2525: return ide_do_drive_cmd (drive, &req, ide_wait);
2526: }
2527: #endif
2528:
2529:
2530: #ifdef TEST
2531: case 0x1234: {
2532: int stat;
2533: struct packet_command pc;
2534: int len, lena;
2535:
2536: memset (&pc, 0, sizeof (pc));
2537:
2538: stat = verify_area (VERIFY_READ, (void *) arg, sizeof (pc.c));
2539: if (stat) return stat;
2540: memcpy_fromfs (&pc.c, (void *) arg, sizeof (pc.c));
2541: arg += sizeof (pc.c);
2542:
2543: stat = verify_area (VERIFY_READ, (void *) arg, sizeof (len));
2544: if (stat) return stat;
2545: memcpy_fromfs (&len, (void *) arg , sizeof (len));
2546: arg += sizeof (len);
2547:
2548: if (len > 0) {
2549: stat = verify_area (VERIFY_WRITE, (void *) arg, len);
2550: if (stat) return stat;
2551: }
2552:
2553: lena = len;
2554: if (lena < 0) lena = 0;
2555:
2556: {
2557: char buf[lena];
2558: if (len > 0) {
2559: pc.buflen = len;
2560: pc.buffer = buf;
2561: }
2562:
2563: stat = cdrom_queue_packet_command (drive, &pc);
2564:
2565: if (len > 0)
2566: memcpy_tofs ((void *)arg, buf, len);
2567: }
2568:
2569: return stat;
2570: }
2571: #endif
2572:
2573: default:
2574: return -EPERM;
2575: }
2576:
2577: }
2578:
2579:
2580:
2581: /****************************************************************************
2582: * Other driver requests (open, close, check media change).
2583: */
2584:
2585: int ide_cdrom_check_media_change (ide_drive_t *drive)
2586: {
2587: int retval;
2588:
2589: (void) cdrom_check_status (drive, NULL);
2590:
2591: retval = CDROM_STATE_FLAGS (drive)->media_changed;
2592: CDROM_STATE_FLAGS (drive)->media_changed = 0;
2593:
2594: return retval;
2595: }
2596:
2597:
2598: int ide_cdrom_open (struct inode *ip, struct file *fp, ide_drive_t *drive)
2599: {
2600: /* no write access */
2601: if (fp->f_mode & 2) {
2602: --drive->usage;
2603: return -EROFS;
2604: }
2605:
2606: /* If this is the first open, check the drive status. */
2607: if (drive->usage == 1) {
2608: int stat;
2609: struct atapi_request_sense my_reqbuf;
2610: my_reqbuf.sense_key = 0;
2611:
2612: /* Get the drive status. */
2613: stat = cdrom_check_status (drive, &my_reqbuf);
2614:
2615: /* If the tray is open, try to close it. */
2616: if (stat && my_reqbuf.sense_key == NOT_READY) {
2617: cdrom_eject (drive, 1, &my_reqbuf);
2618: stat = cdrom_check_status (drive, &my_reqbuf);
2619: }
2620:
2621: /* If things worked ok, lock the door and read the
2622: TOC information. */
2623: if (stat == 0 || my_reqbuf.sense_key == UNIT_ATTENTION) {
2624: (void) cdrom_lockdoor (drive, 1, &my_reqbuf);
2625: (void) cdrom_read_toc (drive, &my_reqbuf);
2626: }
2627: }
2628:
2629: return 0;
2630: }
2631:
2632:
2633: /*
2634: * Close down the device. Invalidate all cached blocks.
2635: */
2636:
2637: void ide_cdrom_release (struct inode *inode, struct file *file,
2638: ide_drive_t *drive)
2639: {
2640: if (drive->usage == 0) {
2641: invalidate_buffers (inode->i_rdev);
2642:
2643: /* Unlock the door. */
2644: (void) cdrom_lockdoor (drive, 0, NULL);
2645:
2646: /* Do an eject if we were requested to do so. */
2647: if (CDROM_STATE_FLAGS (drive)->eject_on_close)
2648: (void) cdrom_eject (drive, 0, NULL);
2649: }
2650: }
2651:
2652:
2653:
2654: /****************************************************************************
2655: * Device initialization.
2656: */
2657:
2658: void ide_cdrom_setup (ide_drive_t *drive)
2659: {
2660: blksize_size[HWIF(drive)->major][drive->select.b.unit << PARTN_BITS] =
2661: CD_FRAMESIZE;
2662:
2663: drive->special.all = 0;
2664: drive->ready_stat = 0;
2665:
2666: CDROM_STATE_FLAGS (drive)->media_changed = 0;
2667: CDROM_STATE_FLAGS (drive)->toc_valid = 0;
2668: CDROM_STATE_FLAGS (drive)->door_locked = 0;
2669:
2670: /* Turn this off by default, since many people don't like it. */
2671: CDROM_STATE_FLAGS (drive)->eject_on_close= 0;
2672:
2673: #if NO_DOOR_LOCKING
2674: CDROM_CONFIG_FLAGS (drive)->no_doorlock = 1;
2675: #else
2676: CDROM_CONFIG_FLAGS (drive)->no_doorlock = 0;
2677: #endif
2678:
2679: /* by default Sanyo 3 CD changer support is turned off and
2680: ATAPI Rev 2.2+ standard support for CD changers is used */
2681: CDROM_STATE_FLAGS (drive)->sanyo_slot = 0;
2682:
2683: if (drive->id != NULL)
2684: CDROM_CONFIG_FLAGS (drive)->drq_interrupt =
2685: ((drive->id->config & 0x0060) == 0x20);
2686: else
2687: CDROM_CONFIG_FLAGS (drive)->drq_interrupt = 0;
2688:
2689: #if ! STANDARD_ATAPI
2690: drive->cdrom_info.max_sectors = 252;
2691:
2692: CDROM_CONFIG_FLAGS (drive)->old_readcd = 0;
2693: CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd = 0;
2694: CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd = 0;
2695: CDROM_CONFIG_FLAGS (drive)->playmsf_as_bcd = 0;
2696: CDROM_CONFIG_FLAGS (drive)->subchan_as_bcd = 0;
2697:
2698: if (drive->id != NULL) {
2699: if (strcmp (drive->id->model, "V003S0DS") == 0 &&
2700: drive->id->fw_rev[4] == '1' &&
2701: drive->id->fw_rev[6] <= '2') {
2702: /* Vertos 300.
2703: Some versions of this drive like to talk BCD. */
2704: CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd = 1;
2705: CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd = 1;
2706: CDROM_CONFIG_FLAGS (drive)->playmsf_as_bcd = 1;
2707: CDROM_CONFIG_FLAGS (drive)->subchan_as_bcd = 1;
2708: }
2709:
2710: else if (strcmp (drive->id->model, "V006E0DS") == 0 &&
2711: drive->id->fw_rev[4] == '1' &&
2712: drive->id->fw_rev[6] <= '2') {
2713: /* Vertos 600 ESD. */
2714: CDROM_CONFIG_FLAGS (drive)->toctracks_as_bcd = 1;
2715: }
2716:
2717: else if (strcmp (drive->id->model, "GCD-R580B") == 0)
2718: drive->cdrom_info.max_sectors = 124;
2719:
2720: else if (strcmp (drive->id->model,
2721: "NEC CD-ROM DRIVE:260") == 0 &&
2722: strcmp (drive->id->fw_rev, "1.01") == 0) {
2723: /* Old NEC260 (not R). */
2724: CDROM_CONFIG_FLAGS (drive)->tocaddr_as_bcd = 1;
2725: CDROM_CONFIG_FLAGS (drive)->playmsf_as_bcd = 1;
2726: CDROM_CONFIG_FLAGS (drive)->subchan_as_bcd = 1;
2727: }
2728:
2729: else if (strcmp (drive->id->model, "WEARNES CDD-120") == 0 &&
2730: strcmp (drive->id->fw_rev, "A1.1") == 0) {
2731: /* Wearnes */
2732: CDROM_CONFIG_FLAGS (drive)->playmsf_as_bcd = 1;
2733: CDROM_CONFIG_FLAGS (drive)->subchan_as_bcd = 1;
2734: }
2735:
2736: /* Sanyo 3 CD changer uses a non-standard command
2737: for CD changing */
2738: else if ((strcmp(drive->id->model, "CD-ROM CDR-C3 G") == 0) ||
2739: (strcmp(drive->id->model, "CD-ROM CDR-C3G") == 0) ||
2740: (strcmp(drive->id->model, "CD-ROM CDR_C36") == 0)) {
2741: /* uses CD in slot 0 when value is set to 3 */
2742: CDROM_STATE_FLAGS (drive)->sanyo_slot = 3;
2743: }
2744:
2745: }
2746: #endif /* not STANDARD_ATAPI */
2747:
2748: drive->cdrom_info.toc = NULL;
2749: drive->cdrom_info.sector_buffer = NULL;
2750: drive->cdrom_info.sector_buffered = 0;
2751: drive->cdrom_info.nsectors_buffered = 0;
2752: }
2753:
2754:
2755:
2756: /*
2757: * TODO (for 2.1?):
2758: * Avoid printing error messages for expected errors from the drive.
2759: * Integrate with generic cdrom driver.
2760: * Query the drive to find what features are available
2761: * before trying to use them.
2762: * Integrate spindown time adjustment patch.
2763: * Modularize.
2764: * CDROMRESET ioctl.
2765: * Better support for changers.
2766: */
2767:
2768:
2769:
2770: /*==========================================================================*/
2771: /*
2772: * Local variables:
2773: * c-basic-offset: 8
2774: * End:
2775: */
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