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26#include "qemu/osdep.h"
27#include "hw/ide/internal.h"
28#include "hw/scsi/scsi.h"
29#include "sysemu/block-backend.h"
30#include "trace.h"
31
32#define ATAPI_SECTOR_BITS (2 + BDRV_SECTOR_BITS)
33#define ATAPI_SECTOR_SIZE (1 << ATAPI_SECTOR_BITS)
34
35static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret);
36
37static void padstr8(uint8_t *buf, int buf_size, const char *src)
38{
39 int i;
40 for(i = 0; i < buf_size; i++) {
41 if (*src)
42 buf[i] = *src++;
43 else
44 buf[i] = ' ';
45 }
46}
47
48static void lba_to_msf(uint8_t *buf, int lba)
49{
50 lba += 150;
51 buf[0] = (lba / 75) / 60;
52 buf[1] = (lba / 75) % 60;
53 buf[2] = lba % 75;
54}
55
56static inline int media_present(IDEState *s)
57{
58 return !s->tray_open && s->nb_sectors > 0;
59}
60
61
62static inline int media_is_dvd(IDEState *s)
63{
64 return (media_present(s) && s->nb_sectors > CD_MAX_SECTORS);
65}
66
67static inline int media_is_cd(IDEState *s)
68{
69 return (media_present(s) && s->nb_sectors <= CD_MAX_SECTORS);
70}
71
72static void cd_data_to_raw(uint8_t *buf, int lba)
73{
74
75 buf[0] = 0x00;
76 memset(buf + 1, 0xff, 10);
77 buf[11] = 0x00;
78 buf += 12;
79
80 lba_to_msf(buf, lba);
81 buf[3] = 0x01;
82 buf += 4;
83
84 buf += 2048;
85
86 memset(buf, 0, 288);
87}
88
89static int
90cd_read_sector_sync(IDEState *s)
91{
92 int ret;
93 block_acct_start(blk_get_stats(s->blk), &s->acct,
94 ATAPI_SECTOR_SIZE, BLOCK_ACCT_READ);
95
96 trace_cd_read_sector_sync(s->lba);
97
98 switch (s->cd_sector_size) {
99 case 2048:
100 ret = blk_pread(s->blk, (int64_t)s->lba << ATAPI_SECTOR_BITS,
101 ATAPI_SECTOR_SIZE, s->io_buffer, 0);
102 break;
103 case 2352:
104 ret = blk_pread(s->blk, (int64_t)s->lba << ATAPI_SECTOR_BITS,
105 ATAPI_SECTOR_SIZE, s->io_buffer + 16, 0);
106 if (ret >= 0) {
107 cd_data_to_raw(s->io_buffer, s->lba);
108 }
109 break;
110 default:
111 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_READ);
112 return -EIO;
113 }
114
115 if (ret < 0) {
116 block_acct_failed(blk_get_stats(s->blk), &s->acct);
117 } else {
118 block_acct_done(blk_get_stats(s->blk), &s->acct);
119 s->lba++;
120 s->io_buffer_index = 0;
121 }
122
123 return ret;
124}
125
126static void cd_read_sector_cb(void *opaque, int ret)
127{
128 IDEState *s = opaque;
129
130 trace_cd_read_sector_cb(s->lba, ret);
131
132 if (ret < 0) {
133 block_acct_failed(blk_get_stats(s->blk), &s->acct);
134 ide_atapi_io_error(s, ret);
135 return;
136 }
137
138 block_acct_done(blk_get_stats(s->blk), &s->acct);
139
140 if (s->cd_sector_size == 2352) {
141 cd_data_to_raw(s->io_buffer, s->lba);
142 }
143
144 s->lba++;
145 s->io_buffer_index = 0;
146 s->status &= ~BUSY_STAT;
147
148 ide_atapi_cmd_reply_end(s);
149}
150
151static int cd_read_sector(IDEState *s)
152{
153 void *buf;
154
155 if (s->cd_sector_size != 2048 && s->cd_sector_size != 2352) {
156 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_READ);
157 return -EINVAL;
158 }
159
160 buf = (s->cd_sector_size == 2352) ? s->io_buffer + 16 : s->io_buffer;
161 qemu_iovec_init_buf(&s->qiov, buf, ATAPI_SECTOR_SIZE);
162
163 trace_cd_read_sector(s->lba);
164
165 block_acct_start(blk_get_stats(s->blk), &s->acct,
166 ATAPI_SECTOR_SIZE, BLOCK_ACCT_READ);
167
168 ide_buffered_readv(s, (int64_t)s->lba << 2, &s->qiov, 4,
169 cd_read_sector_cb, s);
170
171 s->status |= BUSY_STAT;
172 return 0;
173}
174
175void ide_atapi_cmd_ok(IDEState *s)
176{
177 s->error = 0;
178 s->status = READY_STAT | SEEK_STAT;
179 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
180 ide_transfer_stop(s);
181 ide_set_irq(s->bus);
182}
183
184void ide_atapi_cmd_error(IDEState *s, int sense_key, int asc)
185{
186 trace_ide_atapi_cmd_error(s, sense_key, asc);
187 s->error = sense_key << 4;
188 s->status = READY_STAT | ERR_STAT;
189 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
190 s->sense_key = sense_key;
191 s->asc = asc;
192 ide_transfer_stop(s);
193 ide_set_irq(s->bus);
194}
195
196void ide_atapi_io_error(IDEState *s, int ret)
197{
198
199 if (ret == -ENOMEDIUM) {
200 ide_atapi_cmd_error(s, NOT_READY,
201 ASC_MEDIUM_NOT_PRESENT);
202 } else {
203 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
204 ASC_LOGICAL_BLOCK_OOR);
205 }
206}
207
208static uint16_t atapi_byte_count_limit(IDEState *s)
209{
210 uint16_t bcl;
211
212 bcl = s->lcyl | (s->hcyl << 8);
213 if (bcl == 0xffff) {
214 return 0xfffe;
215 }
216 return bcl;
217}
218
219
220void ide_atapi_cmd_reply_end(IDEState *s)
221{
222 int byte_count_limit, size, ret;
223 while (s->packet_transfer_size > 0) {
224 trace_ide_atapi_cmd_reply_end(s, s->packet_transfer_size,
225 s->elementary_transfer_size,
226 s->io_buffer_index);
227
228
229 if (s->lba != -1 && s->io_buffer_index >= s->cd_sector_size) {
230 if (!s->elementary_transfer_size) {
231 ret = cd_read_sector(s);
232 if (ret < 0) {
233 ide_atapi_io_error(s, ret);
234 }
235 return;
236 } else {
237
238
239
240 ret = cd_read_sector_sync(s);
241 if (ret < 0) {
242 ide_atapi_io_error(s, ret);
243 return;
244 }
245 }
246 }
247 if (s->elementary_transfer_size > 0) {
248
249
250 size = s->cd_sector_size - s->io_buffer_index;
251 if (size > s->elementary_transfer_size)
252 size = s->elementary_transfer_size;
253 } else {
254
255 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO;
256 ide_set_irq(s->bus);
257 byte_count_limit = atapi_byte_count_limit(s);
258 trace_ide_atapi_cmd_reply_end_bcl(s, byte_count_limit);
259 size = s->packet_transfer_size;
260 if (size > byte_count_limit) {
261
262 if (byte_count_limit & 1)
263 byte_count_limit--;
264 size = byte_count_limit;
265 }
266 s->lcyl = size;
267 s->hcyl = size >> 8;
268 s->elementary_transfer_size = size;
269
270 if (s->lba != -1) {
271 if (size > (s->cd_sector_size - s->io_buffer_index))
272 size = (s->cd_sector_size - s->io_buffer_index);
273 }
274 trace_ide_atapi_cmd_reply_end_new(s, s->status);
275 }
276 s->packet_transfer_size -= size;
277 s->elementary_transfer_size -= size;
278 s->io_buffer_index += size;
279 assert(size <= s->io_buffer_total_len);
280 assert(s->io_buffer_index <= s->io_buffer_total_len);
281
282
283
284
285
286 if (!ide_transfer_start_norecurse(s,
287 s->io_buffer + s->io_buffer_index - size,
288 size, ide_atapi_cmd_reply_end)) {
289 return;
290 }
291 }
292
293
294 trace_ide_atapi_cmd_reply_end_eot(s, s->status);
295 ide_atapi_cmd_ok(s);
296 ide_set_irq(s->bus);
297}
298
299
300static void ide_atapi_cmd_reply(IDEState *s, int size, int max_size)
301{
302 if (size > max_size)
303 size = max_size;
304 s->lba = -1;
305 s->packet_transfer_size = size;
306 s->io_buffer_size = size;
307 s->elementary_transfer_size = 0;
308
309 if (s->atapi_dma) {
310 block_acct_start(blk_get_stats(s->blk), &s->acct, size,
311 BLOCK_ACCT_READ);
312 s->status = READY_STAT | SEEK_STAT | DRQ_STAT;
313 ide_start_dma(s, ide_atapi_cmd_read_dma_cb);
314 } else {
315 s->status = READY_STAT | SEEK_STAT;
316 s->io_buffer_index = 0;
317 ide_atapi_cmd_reply_end(s);
318 }
319}
320
321
322static void ide_atapi_cmd_read_pio(IDEState *s, int lba, int nb_sectors,
323 int sector_size)
324{
325 assert(0 <= lba && lba < (s->nb_sectors >> 2));
326
327 s->lba = lba;
328 s->packet_transfer_size = nb_sectors * sector_size;
329 s->elementary_transfer_size = 0;
330 s->io_buffer_index = sector_size;
331 s->cd_sector_size = sector_size;
332
333 ide_atapi_cmd_reply_end(s);
334}
335
336static void ide_atapi_cmd_check_status(IDEState *s)
337{
338 trace_ide_atapi_cmd_check_status(s);
339 s->error = MC_ERR | (UNIT_ATTENTION << 4);
340 s->status = ERR_STAT;
341 s->nsector = 0;
342 ide_set_irq(s->bus);
343}
344
345
346static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret)
347{
348 IDEState *s = opaque;
349 int data_offset, n;
350
351 if (ret < 0) {
352 if (ide_handle_rw_error(s, -ret, ide_dma_cmd_to_retry(s->dma_cmd))) {
353 if (s->bus->error_status) {
354 s->bus->dma->aiocb = NULL;
355 return;
356 }
357 goto eot;
358 }
359 }
360
361 if (s->io_buffer_size > 0) {
362
363
364
365
366
367
368
369 if (s->lba != -1) {
370 if (s->cd_sector_size == 2352) {
371 n = 1;
372 cd_data_to_raw(s->io_buffer, s->lba);
373 } else {
374 n = s->io_buffer_size >> 11;
375 }
376 s->lba += n;
377 }
378 s->packet_transfer_size -= s->io_buffer_size;
379 if (s->bus->dma->ops->rw_buf(s->bus->dma, 1) == 0)
380 goto eot;
381 }
382
383 if (s->packet_transfer_size <= 0) {
384 s->status = READY_STAT | SEEK_STAT;
385 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
386 ide_set_irq(s->bus);
387 goto eot;
388 }
389
390 s->io_buffer_index = 0;
391 if (s->cd_sector_size == 2352) {
392 n = 1;
393 s->io_buffer_size = s->cd_sector_size;
394 data_offset = 16;
395 } else {
396 n = s->packet_transfer_size >> 11;
397 if (n > (IDE_DMA_BUF_SECTORS / 4))
398 n = (IDE_DMA_BUF_SECTORS / 4);
399 s->io_buffer_size = n * 2048;
400 data_offset = 0;
401 }
402 trace_ide_atapi_cmd_read_dma_cb_aio(s, s->lba, n);
403 qemu_iovec_init_buf(&s->bus->dma->qiov, s->io_buffer + data_offset,
404 n * ATAPI_SECTOR_SIZE);
405
406 s->bus->dma->aiocb = ide_buffered_readv(s, (int64_t)s->lba << 2,
407 &s->bus->dma->qiov, n * 4,
408 ide_atapi_cmd_read_dma_cb, s);
409 return;
410
411eot:
412 if (ret < 0) {
413 block_acct_failed(blk_get_stats(s->blk), &s->acct);
414 } else {
415 block_acct_done(blk_get_stats(s->blk), &s->acct);
416 }
417 ide_set_inactive(s, false);
418}
419
420
421
422static void ide_atapi_cmd_read_dma(IDEState *s, int lba, int nb_sectors,
423 int sector_size)
424{
425 assert(0 <= lba && lba < (s->nb_sectors >> 2));
426
427 s->lba = lba;
428 s->packet_transfer_size = nb_sectors * sector_size;
429 s->io_buffer_size = 0;
430 s->cd_sector_size = sector_size;
431
432 block_acct_start(blk_get_stats(s->blk), &s->acct, s->packet_transfer_size,
433 BLOCK_ACCT_READ);
434
435
436 s->status = READY_STAT | SEEK_STAT | DRQ_STAT | BUSY_STAT;
437 ide_start_dma(s, ide_atapi_cmd_read_dma_cb);
438}
439
440static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors,
441 int sector_size)
442{
443 trace_ide_atapi_cmd_read(s, s->atapi_dma ? "dma" : "pio",
444 lba, nb_sectors);
445 if (s->atapi_dma) {
446 ide_atapi_cmd_read_dma(s, lba, nb_sectors, sector_size);
447 } else {
448 ide_atapi_cmd_read_pio(s, lba, nb_sectors, sector_size);
449 }
450}
451
452void ide_atapi_dma_restart(IDEState *s)
453{
454
455
456
457
458
459 s->unit = s->bus->retry_unit;
460 s->bus->dma->ops->restart_dma(s->bus->dma);
461 ide_atapi_cmd(s);
462}
463
464static inline uint8_t ide_atapi_set_profile(uint8_t *buf, uint8_t *index,
465 uint16_t profile)
466{
467 uint8_t *buf_profile = buf + 12;
468
469 buf_profile += ((*index) * 4);
470 stw_be_p(buf_profile, profile);
471 buf_profile[2] = ((buf_profile[0] == buf[6]) && (buf_profile[1] == buf[7]));
472
473
474 (*index)++;
475 buf[11] += 4;
476
477 return 4;
478}
479
480static int ide_dvd_read_structure(IDEState *s, int format,
481 const uint8_t *packet, uint8_t *buf)
482{
483 switch (format) {
484 case 0x0:
485 {
486 int layer = packet[6];
487 uint64_t total_sectors;
488
489 if (layer != 0)
490 return -ASC_INV_FIELD_IN_CMD_PACKET;
491
492 total_sectors = s->nb_sectors >> 2;
493 if (total_sectors == 0) {
494 return -ASC_MEDIUM_NOT_PRESENT;
495 }
496
497 buf[4] = 1;
498 buf[5] = 0xf;
499 buf[6] = 1;
500 buf[7] = 0;
501
502
503 stl_be_p(buf + 8, 0);
504 stl_be_p(buf + 12, total_sectors - 1);
505 stl_be_p(buf + 16, total_sectors - 1);
506
507
508 stw_be_p(buf, 2048 + 2);
509
510
511 return (2048 + 4);
512 }
513
514 case 0x01:
515 buf[4] = 0;
516 buf[5] = 0;
517
518
519 stw_be_p(buf, 4 + 2);
520
521
522 return (4 + 4);
523
524 case 0x03:
525 return -ASC_INV_FIELD_IN_CMD_PACKET;
526
527 case 0x04:
528
529 stw_be_p(buf, 2048 + 2);
530
531
532 return (2048 + 4);
533
534 case 0xff:
535
536
537
538
539
540 buf[4] = 0x00;
541 buf[5] = 0x40;
542 stw_be_p(buf + 6, 2048 + 4);
543
544 buf[8] = 0x01;
545 buf[9] = 0x40;
546 stw_be_p(buf + 10, 4 + 4);
547
548 buf[12] = 0x03;
549 buf[13] = 0x40;
550 stw_be_p(buf + 14, 188 + 4);
551
552 buf[16] = 0x04;
553 buf[17] = 0x40;
554 stw_be_p(buf + 18, 2048 + 4);
555
556
557 stw_be_p(buf, 16 + 2);
558
559
560 return (16 + 4);
561
562 default:
563 return -ASC_INV_FIELD_IN_CMD_PACKET;
564 }
565}
566
567static unsigned int event_status_media(IDEState *s,
568 uint8_t *buf)
569{
570 uint8_t event_code, media_status;
571
572 media_status = 0;
573 if (s->tray_open) {
574 media_status = MS_TRAY_OPEN;
575 } else if (blk_is_inserted(s->blk)) {
576 media_status = MS_MEDIA_PRESENT;
577 }
578
579
580 event_code = MEC_NO_CHANGE;
581 if (media_status != MS_TRAY_OPEN) {
582 if (s->events.new_media) {
583 event_code = MEC_NEW_MEDIA;
584 s->events.new_media = false;
585 } else if (s->events.eject_request) {
586 event_code = MEC_EJECT_REQUESTED;
587 s->events.eject_request = false;
588 }
589 }
590
591 buf[4] = event_code;
592 buf[5] = media_status;
593
594
595 buf[6] = 0;
596 buf[7] = 0;
597
598 return 8;
599}
600
601
602
603
604
605static bool validate_bcl(IDEState *s)
606{
607
608 if (s->atapi_dma || atapi_byte_count_limit(s)) {
609 return true;
610 }
611
612
613
614 ide_abort_command(s);
615 return false;
616}
617
618static void cmd_get_event_status_notification(IDEState *s,
619 uint8_t *buf)
620{
621 const uint8_t *packet = buf;
622
623 struct {
624 uint8_t opcode;
625 uint8_t polled;
626 uint8_t reserved2[2];
627 uint8_t class;
628 uint8_t reserved3[2];
629 uint16_t len;
630 uint8_t control;
631 } QEMU_PACKED *gesn_cdb;
632
633 struct {
634 uint16_t len;
635 uint8_t notification_class;
636 uint8_t supported_events;
637 } QEMU_PACKED *gesn_event_header;
638 unsigned int max_len, used_len;
639
640 gesn_cdb = (void *)packet;
641 gesn_event_header = (void *)buf;
642
643 max_len = be16_to_cpu(gesn_cdb->len);
644
645
646 if (!(gesn_cdb->polled & 0x01)) {
647
648 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
649 ASC_INV_FIELD_IN_CMD_PACKET);
650 return;
651 }
652
653
654
655
656
657
658
659
660
661
662
663 gesn_event_header->supported_events = 1 << GESN_MEDIA;
664
665
666
667
668
669
670 gesn_event_header->notification_class = 0;
671
672
673
674
675
676
677 if (gesn_cdb->class & (1 << GESN_MEDIA)) {
678 gesn_event_header->notification_class |= GESN_MEDIA;
679 used_len = event_status_media(s, buf);
680 } else {
681 gesn_event_header->notification_class = 0x80;
682 used_len = sizeof(*gesn_event_header);
683 }
684 gesn_event_header->len = cpu_to_be16(used_len
685 - sizeof(*gesn_event_header));
686 ide_atapi_cmd_reply(s, used_len, max_len);
687}
688
689static void cmd_request_sense(IDEState *s, uint8_t *buf)
690{
691 int max_len = buf[4];
692
693 memset(buf, 0, 18);
694 buf[0] = 0x70 | (1 << 7);
695 buf[2] = s->sense_key;
696 buf[7] = 10;
697 buf[12] = s->asc;
698
699 if (s->sense_key == UNIT_ATTENTION) {
700 s->sense_key = NO_SENSE;
701 }
702
703 ide_atapi_cmd_reply(s, 18, max_len);
704}
705
706static void cmd_inquiry(IDEState *s, uint8_t *buf)
707{
708 uint8_t page_code = buf[2];
709 int max_len = buf[4];
710
711 unsigned idx = 0;
712 unsigned size_idx;
713 unsigned preamble_len;
714
715
716
717 if (buf[1] & 0x01) {
718 preamble_len = 4;
719 size_idx = 3;
720
721 buf[idx++] = 0x05;
722 buf[idx++] = page_code;
723 buf[idx++] = 0x00;
724 idx++;
725
726 switch (page_code) {
727 case 0x00:
728
729 buf[idx++] = 0x00;
730 buf[idx++] = 0x83;
731 break;
732
733 case 0x83:
734
735
736
737
738
739 if (idx + 24 > max_len) {
740
741
742 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
743 ASC_DATA_PHASE_ERROR);
744 return;
745 }
746 buf[idx++] = 0x02;
747 buf[idx++] = 0x00;
748 buf[idx++] = 0x00;
749 buf[idx++] = 20;
750 padstr8(buf + idx, 20, s->drive_serial_str);
751 idx += 20;
752
753
754 if (idx + 72 > max_len) {
755
756 goto out;
757 }
758 buf[idx++] = 0x02;
759 buf[idx++] = 0x01;
760 buf[idx++] = 0x00;
761 buf[idx++] = 68;
762 padstr8(buf + idx, 8, "ATA");
763 idx += 8;
764 padstr8(buf + idx, 40, s->drive_model_str);
765 idx += 40;
766 padstr8(buf + idx, 20, s->drive_serial_str);
767 idx += 20;
768
769
770 if (s->wwn && (idx + 12 <= max_len)) {
771
772 buf[idx++] = 0x01;
773 buf[idx++] = 0x03;
774 buf[idx++] = 0x00;
775 buf[idx++] = 0x08;
776 stq_be_p(&buf[idx], s->wwn);
777 idx += 8;
778 }
779 break;
780
781 default:
782
783 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
784 ASC_INV_FIELD_IN_CMD_PACKET);
785 return;
786 }
787 } else {
788 preamble_len = 5;
789 size_idx = 4;
790
791 buf[0] = 0x05;
792 buf[1] = 0x80;
793 buf[2] = 0x00;
794 buf[3] = 0x21;
795
796 buf[5] = 0;
797 buf[6] = 0;
798 buf[7] = 0;
799 padstr8(buf + 8, 8, "QEMU");
800 padstr8(buf + 16, 16, "QEMU DVD-ROM");
801 padstr8(buf + 32, 4, s->version);
802 idx = 36;
803 }
804
805 out:
806 buf[size_idx] = idx - preamble_len;
807 ide_atapi_cmd_reply(s, idx, max_len);
808}
809
810static void cmd_get_configuration(IDEState *s, uint8_t *buf)
811{
812 uint32_t len;
813 uint8_t index = 0;
814 int max_len;
815
816
817 if (buf[2] != 0 || buf[3] != 0) {
818 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
819 ASC_INV_FIELD_IN_CMD_PACKET);
820 return;
821 }
822
823
824 max_len = lduw_be_p(buf + 7);
825
826
827
828
829
830
831
832
833 if (max_len > BDRV_SECTOR_SIZE) {
834
835 max_len = BDRV_SECTOR_SIZE;
836 }
837
838 memset(buf, 0, max_len);
839
840
841
842
843 if (media_is_dvd(s)) {
844 stw_be_p(buf + 6, MMC_PROFILE_DVD_ROM);
845 } else if (media_is_cd(s)) {
846 stw_be_p(buf + 6, MMC_PROFILE_CD_ROM);
847 }
848
849 buf[10] = 0x02 | 0x01;
850 len = 12;
851 len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_DVD_ROM);
852 len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_CD_ROM);
853 stl_be_p(buf, len - 4);
854
855 ide_atapi_cmd_reply(s, len, max_len);
856}
857
858static void cmd_mode_sense(IDEState *s, uint8_t *buf)
859{
860 int action, code;
861 int max_len;
862
863 max_len = lduw_be_p(buf + 7);
864 action = buf[2] >> 6;
865 code = buf[2] & 0x3f;
866
867 switch(action) {
868 case 0:
869 switch(code) {
870 case MODE_PAGE_R_W_ERROR:
871 stw_be_p(&buf[0], 16 - 2);
872 buf[2] = 0x70;
873 buf[3] = 0;
874 buf[4] = 0;
875 buf[5] = 0;
876 buf[6] = 0;
877 buf[7] = 0;
878
879 buf[8] = MODE_PAGE_R_W_ERROR;
880 buf[9] = 16 - 10;
881 buf[10] = 0x00;
882 buf[11] = 0x05;
883 buf[12] = 0x00;
884 buf[13] = 0x00;
885 buf[14] = 0x00;
886 buf[15] = 0x00;
887 ide_atapi_cmd_reply(s, 16, max_len);
888 break;
889 case MODE_PAGE_AUDIO_CTL:
890 stw_be_p(&buf[0], 24 - 2);
891 buf[2] = 0x70;
892 buf[3] = 0;
893 buf[4] = 0;
894 buf[5] = 0;
895 buf[6] = 0;
896 buf[7] = 0;
897
898 buf[8] = MODE_PAGE_AUDIO_CTL;
899 buf[9] = 24 - 10;
900
901 buf[17] = 0;
902 buf[19] = 0;
903 buf[21] = 0;
904 buf[23] = 0;
905
906 ide_atapi_cmd_reply(s, 24, max_len);
907 break;
908 case MODE_PAGE_CAPABILITIES:
909 stw_be_p(&buf[0], 30 - 2);
910 buf[2] = 0x70;
911 buf[3] = 0;
912 buf[4] = 0;
913 buf[5] = 0;
914 buf[6] = 0;
915 buf[7] = 0;
916
917 buf[8] = MODE_PAGE_CAPABILITIES;
918 buf[9] = 30 - 10;
919 buf[10] = 0x3b;
920 buf[11] = 0x00;
921
922
923
924 buf[12] = 0x71;
925 buf[13] = 3 << 5;
926 buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
927 if (s->tray_locked) {
928 buf[14] |= 1 << 1;
929 }
930 buf[15] = 0x00;
931 stw_be_p(&buf[16], 704);
932 buf[18] = 0;
933 buf[19] = 2;
934 stw_be_p(&buf[20], 512);
935 stw_be_p(&buf[22], 704);
936 buf[24] = 0;
937 buf[25] = 0;
938 buf[26] = 0;
939 buf[27] = 0;
940 buf[28] = 0;
941 buf[29] = 0;
942 ide_atapi_cmd_reply(s, 30, max_len);
943 break;
944 default:
945 goto error_cmd;
946 }
947 break;
948 case 1:
949 goto error_cmd;
950 case 2:
951 goto error_cmd;
952 default:
953 case 3:
954 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
955 ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
956 break;
957 }
958 return;
959
960error_cmd:
961 ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
962}
963
964static void cmd_test_unit_ready(IDEState *s, uint8_t *buf)
965{
966
967
968 ide_atapi_cmd_ok(s);
969}
970
971static void cmd_prevent_allow_medium_removal(IDEState *s, uint8_t* buf)
972{
973 s->tray_locked = buf[4] & 1;
974 blk_lock_medium(s->blk, buf[4] & 1);
975 ide_atapi_cmd_ok(s);
976}
977
978static void cmd_read(IDEState *s, uint8_t* buf)
979{
980 unsigned int nb_sectors, lba;
981
982
983 uint64_t total_sectors = s->nb_sectors >> 2;
984
985 if (buf[0] == GPCMD_READ_10) {
986 nb_sectors = lduw_be_p(buf + 7);
987 } else {
988 nb_sectors = ldl_be_p(buf + 6);
989 }
990 if (nb_sectors == 0) {
991 ide_atapi_cmd_ok(s);
992 return;
993 }
994
995 lba = ldl_be_p(buf + 2);
996 if (lba >= total_sectors || lba + nb_sectors - 1 >= total_sectors) {
997 ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
998 return;
999 }
1000
1001 ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
1002}
1003
1004static void cmd_read_cd(IDEState *s, uint8_t* buf)
1005{
1006 unsigned int nb_sectors, lba, transfer_request;
1007
1008
1009 uint64_t total_sectors = s->nb_sectors >> 2;
1010
1011 nb_sectors = (buf[6] << 16) | (buf[7] << 8) | buf[8];
1012 if (nb_sectors == 0) {
1013 ide_atapi_cmd_ok(s);
1014 return;
1015 }
1016
1017 lba = ldl_be_p(buf + 2);
1018 if (lba >= total_sectors || lba + nb_sectors - 1 >= total_sectors) {
1019 ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
1020 return;
1021 }
1022
1023 transfer_request = buf[9] & 0xf8;
1024 if (transfer_request == 0x00) {
1025
1026 ide_atapi_cmd_ok(s);
1027 return;
1028 }
1029
1030
1031 if (!validate_bcl(s)) {
1032 return;
1033 }
1034
1035 switch (transfer_request) {
1036 case 0x10:
1037
1038 ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
1039 break;
1040 case 0xf8:
1041
1042 ide_atapi_cmd_read(s, lba, nb_sectors, 2352);
1043 break;
1044 default:
1045 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
1046 ASC_INV_FIELD_IN_CMD_PACKET);
1047 break;
1048 }
1049}
1050
1051static void cmd_seek(IDEState *s, uint8_t* buf)
1052{
1053 unsigned int lba;
1054 uint64_t total_sectors = s->nb_sectors >> 2;
1055
1056 lba = ldl_be_p(buf + 2);
1057 if (lba >= total_sectors) {
1058 ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
1059 return;
1060 }
1061
1062 ide_atapi_cmd_ok(s);
1063}
1064
1065static void cmd_start_stop_unit(IDEState *s, uint8_t* buf)
1066{
1067 int sense;
1068 bool start = buf[4] & 1;
1069 bool loej = buf[4] & 2;
1070 int pwrcnd = buf[4] & 0xf0;
1071
1072 if (pwrcnd) {
1073
1074 ide_atapi_cmd_ok(s);
1075 return;
1076 }
1077
1078 if (loej) {
1079 if (!start && !s->tray_open && s->tray_locked) {
1080 sense = blk_is_inserted(s->blk)
1081 ? NOT_READY : ILLEGAL_REQUEST;
1082 ide_atapi_cmd_error(s, sense, ASC_MEDIA_REMOVAL_PREVENTED);
1083 return;
1084 }
1085
1086 if (s->tray_open != !start) {
1087 blk_eject(s->blk, !start);
1088 s->tray_open = !start;
1089 }
1090 }
1091
1092 ide_atapi_cmd_ok(s);
1093}
1094
1095static void cmd_mechanism_status(IDEState *s, uint8_t* buf)
1096{
1097 int max_len = lduw_be_p(buf + 8);
1098
1099 stw_be_p(buf, 0);
1100
1101 buf[2] = 0;
1102 buf[3] = 0;
1103 buf[4] = 0;
1104 buf[5] = 1;
1105 stw_be_p(buf + 6, 0);
1106 ide_atapi_cmd_reply(s, 8, max_len);
1107}
1108
1109static void cmd_read_toc_pma_atip(IDEState *s, uint8_t* buf)
1110{
1111 int format, msf, start_track, len;
1112 int max_len;
1113 uint64_t total_sectors = s->nb_sectors >> 2;
1114
1115 max_len = lduw_be_p(buf + 7);
1116 format = buf[9] >> 6;
1117 msf = (buf[1] >> 1) & 1;
1118 start_track = buf[6];
1119
1120 switch(format) {
1121 case 0:
1122 len = cdrom_read_toc(total_sectors, buf, msf, start_track);
1123 if (len < 0)
1124 goto error_cmd;
1125 ide_atapi_cmd_reply(s, len, max_len);
1126 break;
1127 case 1:
1128
1129 memset(buf, 0, 12);
1130 buf[1] = 0x0a;
1131 buf[2] = 0x01;
1132 buf[3] = 0x01;
1133 ide_atapi_cmd_reply(s, 12, max_len);
1134 break;
1135 case 2:
1136 len = cdrom_read_toc_raw(total_sectors, buf, msf, start_track);
1137 if (len < 0)
1138 goto error_cmd;
1139 ide_atapi_cmd_reply(s, len, max_len);
1140 break;
1141 default:
1142 error_cmd:
1143 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
1144 ASC_INV_FIELD_IN_CMD_PACKET);
1145 }
1146}
1147
1148static void cmd_read_cdvd_capacity(IDEState *s, uint8_t* buf)
1149{
1150 uint64_t total_sectors = s->nb_sectors >> 2;
1151
1152
1153 stl_be_p(buf, total_sectors - 1);
1154 stl_be_p(buf + 4, 2048);
1155 ide_atapi_cmd_reply(s, 8, 8);
1156}
1157
1158static void cmd_read_disc_information(IDEState *s, uint8_t* buf)
1159{
1160 uint8_t type = buf[1] & 7;
1161 uint32_t max_len = lduw_be_p(buf + 7);
1162
1163
1164 if (type != 0) {
1165 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
1166 ASC_INV_FIELD_IN_CMD_PACKET);
1167 return;
1168 }
1169
1170 memset(buf, 0, 34);
1171 buf[1] = 32;
1172 buf[2] = 0xe;
1173 buf[3] = 1;
1174 buf[4] = 1;
1175 buf[5] = 1;
1176 buf[6] = 1;
1177 buf[7] = 0x20;
1178 buf[8] = 0x00;
1179
1180
1181
1182
1183
1184
1185 ide_atapi_cmd_reply(s, 34, max_len);
1186}
1187
1188static void cmd_read_dvd_structure(IDEState *s, uint8_t* buf)
1189{
1190 int max_len;
1191 int media = buf[1];
1192 int format = buf[7];
1193 int ret;
1194
1195 max_len = lduw_be_p(buf + 8);
1196
1197 if (format < 0xff) {
1198 if (media_is_cd(s)) {
1199 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
1200 ASC_INCOMPATIBLE_FORMAT);
1201 return;
1202 } else if (!media_present(s)) {
1203 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
1204 ASC_INV_FIELD_IN_CMD_PACKET);
1205 return;
1206 }
1207 }
1208
1209 memset(buf, 0, max_len > IDE_DMA_BUF_SECTORS * BDRV_SECTOR_SIZE + 4 ?
1210 IDE_DMA_BUF_SECTORS * BDRV_SECTOR_SIZE + 4 : max_len);
1211
1212 switch (format) {
1213 case 0x00 ... 0x7f:
1214 case 0xff:
1215 if (media == 0) {
1216 ret = ide_dvd_read_structure(s, format, buf, buf);
1217
1218 if (ret < 0) {
1219 ide_atapi_cmd_error(s, ILLEGAL_REQUEST, -ret);
1220 } else {
1221 ide_atapi_cmd_reply(s, ret, max_len);
1222 }
1223
1224 break;
1225 }
1226
1227
1228
1229 case 0x80:
1230 case 0x81:
1231 case 0x82:
1232 case 0x83:
1233 case 0x90:
1234 case 0xc0:
1235 default:
1236 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
1237 ASC_INV_FIELD_IN_CMD_PACKET);
1238 break;
1239 }
1240}
1241
1242static void cmd_set_speed(IDEState *s, uint8_t* buf)
1243{
1244 ide_atapi_cmd_ok(s);
1245}
1246
1247enum {
1248
1249
1250
1251
1252 ALLOW_UA = 0x01,
1253
1254
1255
1256
1257
1258
1259 CHECK_READY = 0x02,
1260
1261
1262
1263
1264
1265
1266
1267 NONDATA = 0x04,
1268
1269
1270
1271
1272
1273
1274
1275 CONDDATA = 0x08,
1276};
1277
1278static const struct AtapiCmd {
1279 void (*handler)(IDEState *s, uint8_t *buf);
1280 int flags;
1281} atapi_cmd_table[0x100] = {
1282 [ 0x00 ] = { cmd_test_unit_ready, CHECK_READY | NONDATA },
1283 [ 0x03 ] = { cmd_request_sense, ALLOW_UA },
1284 [ 0x12 ] = { cmd_inquiry, ALLOW_UA },
1285 [ 0x1b ] = { cmd_start_stop_unit, NONDATA },
1286 [ 0x1e ] = { cmd_prevent_allow_medium_removal, NONDATA },
1287 [ 0x25 ] = { cmd_read_cdvd_capacity, CHECK_READY },
1288 [ 0x28 ] = { cmd_read, CHECK_READY },
1289 [ 0x2b ] = { cmd_seek, CHECK_READY | NONDATA },
1290 [ 0x43 ] = { cmd_read_toc_pma_atip, CHECK_READY },
1291 [ 0x46 ] = { cmd_get_configuration, ALLOW_UA },
1292 [ 0x4a ] = { cmd_get_event_status_notification, ALLOW_UA },
1293 [ 0x51 ] = { cmd_read_disc_information, CHECK_READY },
1294 [ 0x5a ] = { cmd_mode_sense, 0 },
1295 [ 0xa8 ] = { cmd_read, CHECK_READY },
1296 [ 0xad ] = { cmd_read_dvd_structure, CHECK_READY },
1297 [ 0xbb ] = { cmd_set_speed, NONDATA },
1298 [ 0xbd ] = { cmd_mechanism_status, 0 },
1299 [ 0xbe ] = { cmd_read_cd, CHECK_READY | CONDDATA },
1300
1301};
1302
1303void ide_atapi_cmd(IDEState *s)
1304{
1305 uint8_t *buf = s->io_buffer;
1306 const struct AtapiCmd *cmd = &atapi_cmd_table[s->io_buffer[0]];
1307
1308 trace_ide_atapi_cmd(s, s->io_buffer[0]);
1309
1310 if (trace_event_get_state_backends(TRACE_IDE_ATAPI_CMD_PACKET)) {
1311
1312 char *ppacket = g_malloc(ATAPI_PACKET_SIZE * 3 + 1);
1313 int i;
1314 for (i = 0; i < ATAPI_PACKET_SIZE; i++) {
1315 sprintf(ppacket + (i * 3), "%02x ", buf[i]);
1316 }
1317 trace_ide_atapi_cmd_packet(s, s->lcyl | (s->hcyl << 8), ppacket);
1318 g_free(ppacket);
1319 }
1320
1321
1322
1323
1324
1325
1326
1327 if (s->sense_key == UNIT_ATTENTION && !(cmd->flags & ALLOW_UA)) {
1328 ide_atapi_cmd_check_status(s);
1329 return;
1330 }
1331
1332
1333
1334
1335
1336
1337
1338 if (!(cmd->flags & ALLOW_UA) &&
1339 !s->tray_open && blk_is_inserted(s->blk) && s->cdrom_changed) {
1340
1341 if (s->cdrom_changed == 1) {
1342 ide_atapi_cmd_error(s, NOT_READY, ASC_MEDIUM_NOT_PRESENT);
1343 s->cdrom_changed = 2;
1344 } else {
1345 ide_atapi_cmd_error(s, UNIT_ATTENTION, ASC_MEDIUM_MAY_HAVE_CHANGED);
1346 s->cdrom_changed = 0;
1347 }
1348
1349 return;
1350 }
1351
1352
1353 if ((cmd->flags & CHECK_READY) &&
1354 (!media_present(s) || !blk_is_inserted(s->blk)))
1355 {
1356 ide_atapi_cmd_error(s, NOT_READY, ASC_MEDIUM_NOT_PRESENT);
1357 return;
1358 }
1359
1360
1361
1362
1363
1364 if (cmd->handler && !(cmd->flags & (NONDATA | CONDDATA))) {
1365 if (!validate_bcl(s)) {
1366 return;
1367 }
1368 }
1369
1370
1371 if (cmd->handler) {
1372 cmd->handler(s, buf);
1373 return;
1374 }
1375
1376 ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_ILLEGAL_OPCODE);
1377}
1378