4 * Copyright (c) 2003 Fabrice Bellard
5 * Copyright (c) 2006 Openedhand Ltd.
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #include "hw/ide/internal.h"
27 #include "hw/scsi/scsi.h"
29 static void ide_atapi_cmd_read_dma_cb(void *opaque
, int ret
);
31 static void padstr8(uint8_t *buf
, int buf_size
, const char *src
)
34 for(i
= 0; i
< buf_size
; i
++) {
42 static inline void cpu_to_ube16(uint8_t *buf
, int val
)
48 static inline void cpu_to_ube32(uint8_t *buf
, unsigned int val
)
56 static inline int ube16_to_cpu(const uint8_t *buf
)
58 return (buf
[0] << 8) | buf
[1];
61 static inline int ube32_to_cpu(const uint8_t *buf
)
63 return (buf
[0] << 24) | (buf
[1] << 16) | (buf
[2] << 8) | buf
[3];
66 static void lba_to_msf(uint8_t *buf
, int lba
)
69 buf
[0] = (lba
/ 75) / 60;
70 buf
[1] = (lba
/ 75) % 60;
74 static inline int media_present(IDEState
*s
)
76 return !s
->tray_open
&& s
->nb_sectors
> 0;
79 /* XXX: DVDs that could fit on a CD will be reported as a CD */
80 static inline int media_is_dvd(IDEState
*s
)
82 return (media_present(s
) && s
->nb_sectors
> CD_MAX_SECTORS
);
85 static inline int media_is_cd(IDEState
*s
)
87 return (media_present(s
) && s
->nb_sectors
<= CD_MAX_SECTORS
);
90 static void cd_data_to_raw(uint8_t *buf
, int lba
)
94 memset(buf
+ 1, 0xff, 10);
99 buf
[3] = 0x01; /* mode 1 data */
103 /* XXX: ECC not computed */
107 static int cd_read_sector(IDEState
*s
, int lba
, uint8_t *buf
, int sector_size
)
111 switch(sector_size
) {
113 bdrv_acct_start(s
->bs
, &s
->acct
, 4 * BDRV_SECTOR_SIZE
, BDRV_ACCT_READ
);
114 ret
= bdrv_read(s
->bs
, (int64_t)lba
<< 2, buf
, 4);
115 bdrv_acct_done(s
->bs
, &s
->acct
);
118 bdrv_acct_start(s
->bs
, &s
->acct
, 4 * BDRV_SECTOR_SIZE
, BDRV_ACCT_READ
);
119 ret
= bdrv_read(s
->bs
, (int64_t)lba
<< 2, buf
+ 16, 4);
120 bdrv_acct_done(s
->bs
, &s
->acct
);
123 cd_data_to_raw(buf
, lba
);
132 void ide_atapi_cmd_ok(IDEState
*s
)
135 s
->status
= READY_STAT
| SEEK_STAT
;
136 s
->nsector
= (s
->nsector
& ~7) | ATAPI_INT_REASON_IO
| ATAPI_INT_REASON_CD
;
140 void ide_atapi_cmd_error(IDEState
*s
, int sense_key
, int asc
)
142 #ifdef DEBUG_IDE_ATAPI
143 printf("atapi_cmd_error: sense=0x%x asc=0x%x\n", sense_key
, asc
);
145 s
->error
= sense_key
<< 4;
146 s
->status
= READY_STAT
| ERR_STAT
;
147 s
->nsector
= (s
->nsector
& ~7) | ATAPI_INT_REASON_IO
| ATAPI_INT_REASON_CD
;
148 s
->sense_key
= sense_key
;
153 void ide_atapi_io_error(IDEState
*s
, int ret
)
155 /* XXX: handle more errors */
156 if (ret
== -ENOMEDIUM
) {
157 ide_atapi_cmd_error(s
, NOT_READY
,
158 ASC_MEDIUM_NOT_PRESENT
);
160 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
,
161 ASC_LOGICAL_BLOCK_OOR
);
165 /* The whole ATAPI transfer logic is handled in this function */
166 void ide_atapi_cmd_reply_end(IDEState
*s
)
168 int byte_count_limit
, size
, ret
;
169 #ifdef DEBUG_IDE_ATAPI
170 printf("reply: tx_size=%d elem_tx_size=%d index=%d\n",
171 s
->packet_transfer_size
,
172 s
->elementary_transfer_size
,
175 if (s
->packet_transfer_size
<= 0) {
176 /* end of transfer */
177 s
->status
= READY_STAT
| SEEK_STAT
;
178 s
->nsector
= (s
->nsector
& ~7) | ATAPI_INT_REASON_IO
| ATAPI_INT_REASON_CD
;
179 ide_transfer_stop(s
);
181 #ifdef DEBUG_IDE_ATAPI
182 printf("status=0x%x\n", s
->status
);
185 /* see if a new sector must be read */
186 if (s
->lba
!= -1 && s
->io_buffer_index
>= s
->cd_sector_size
) {
187 ret
= cd_read_sector(s
, s
->lba
, s
->io_buffer
, s
->cd_sector_size
);
189 ide_transfer_stop(s
);
190 ide_atapi_io_error(s
, ret
);
194 s
->io_buffer_index
= 0;
196 if (s
->elementary_transfer_size
> 0) {
197 /* there are some data left to transmit in this elementary
199 size
= s
->cd_sector_size
- s
->io_buffer_index
;
200 if (size
> s
->elementary_transfer_size
)
201 size
= s
->elementary_transfer_size
;
202 s
->packet_transfer_size
-= size
;
203 s
->elementary_transfer_size
-= size
;
204 s
->io_buffer_index
+= size
;
205 ide_transfer_start(s
, s
->io_buffer
+ s
->io_buffer_index
- size
,
206 size
, ide_atapi_cmd_reply_end
);
208 /* a new transfer is needed */
209 s
->nsector
= (s
->nsector
& ~7) | ATAPI_INT_REASON_IO
;
210 byte_count_limit
= s
->lcyl
| (s
->hcyl
<< 8);
211 #ifdef DEBUG_IDE_ATAPI
212 printf("byte_count_limit=%d\n", byte_count_limit
);
214 if (byte_count_limit
== 0xffff)
216 size
= s
->packet_transfer_size
;
217 if (size
> byte_count_limit
) {
218 /* byte count limit must be even if this case */
219 if (byte_count_limit
& 1)
221 size
= byte_count_limit
;
225 s
->elementary_transfer_size
= size
;
226 /* we cannot transmit more than one sector at a time */
228 if (size
> (s
->cd_sector_size
- s
->io_buffer_index
))
229 size
= (s
->cd_sector_size
- s
->io_buffer_index
);
231 s
->packet_transfer_size
-= size
;
232 s
->elementary_transfer_size
-= size
;
233 s
->io_buffer_index
+= size
;
234 ide_transfer_start(s
, s
->io_buffer
+ s
->io_buffer_index
- size
,
235 size
, ide_atapi_cmd_reply_end
);
237 #ifdef DEBUG_IDE_ATAPI
238 printf("status=0x%x\n", s
->status
);
244 /* send a reply of 'size' bytes in s->io_buffer to an ATAPI command */
245 static void ide_atapi_cmd_reply(IDEState
*s
, int size
, int max_size
)
249 s
->lba
= -1; /* no sector read */
250 s
->packet_transfer_size
= size
;
251 s
->io_buffer_size
= size
; /* dma: send the reply data as one chunk */
252 s
->elementary_transfer_size
= 0;
253 s
->io_buffer_index
= 0;
256 bdrv_acct_start(s
->bs
, &s
->acct
, size
, BDRV_ACCT_READ
);
257 s
->status
= READY_STAT
| SEEK_STAT
| DRQ_STAT
;
258 ide_start_dma(s
, ide_atapi_cmd_read_dma_cb
);
260 s
->status
= READY_STAT
| SEEK_STAT
;
261 ide_atapi_cmd_reply_end(s
);
265 /* start a CD-CDROM read command */
266 static void ide_atapi_cmd_read_pio(IDEState
*s
, int lba
, int nb_sectors
,
270 s
->packet_transfer_size
= nb_sectors
* sector_size
;
271 s
->elementary_transfer_size
= 0;
272 s
->io_buffer_index
= sector_size
;
273 s
->cd_sector_size
= sector_size
;
275 s
->status
= READY_STAT
| SEEK_STAT
;
276 ide_atapi_cmd_reply_end(s
);
279 static void ide_atapi_cmd_check_status(IDEState
*s
)
281 #ifdef DEBUG_IDE_ATAPI
282 printf("atapi_cmd_check_status\n");
284 s
->error
= MC_ERR
| (UNIT_ATTENTION
<< 4);
285 s
->status
= ERR_STAT
;
289 /* ATAPI DMA support */
291 /* XXX: handle read errors */
292 static void ide_atapi_cmd_read_dma_cb(void *opaque
, int ret
)
294 IDEState
*s
= opaque
;
298 ide_atapi_io_error(s
, ret
);
302 if (s
->io_buffer_size
> 0) {
304 * For a cdrom read sector command (s->lba != -1),
305 * adjust the lba for the next s->io_buffer_size chunk
306 * and dma the current chunk.
307 * For a command != read (s->lba == -1), just transfer
311 if (s
->cd_sector_size
== 2352) {
313 cd_data_to_raw(s
->io_buffer
, s
->lba
);
315 n
= s
->io_buffer_size
>> 11;
319 s
->packet_transfer_size
-= s
->io_buffer_size
;
320 if (s
->bus
->dma
->ops
->rw_buf(s
->bus
->dma
, 1) == 0)
324 if (s
->packet_transfer_size
<= 0) {
325 s
->status
= READY_STAT
| SEEK_STAT
;
326 s
->nsector
= (s
->nsector
& ~7) | ATAPI_INT_REASON_IO
| ATAPI_INT_REASON_CD
;
331 s
->io_buffer_index
= 0;
332 if (s
->cd_sector_size
== 2352) {
334 s
->io_buffer_size
= s
->cd_sector_size
;
337 n
= s
->packet_transfer_size
>> 11;
338 if (n
> (IDE_DMA_BUF_SECTORS
/ 4))
339 n
= (IDE_DMA_BUF_SECTORS
/ 4);
340 s
->io_buffer_size
= n
* 2048;
344 printf("aio_read_cd: lba=%u n=%d\n", s
->lba
, n
);
347 s
->bus
->dma
->iov
.iov_base
= (void *)(s
->io_buffer
+ data_offset
);
348 s
->bus
->dma
->iov
.iov_len
= n
* 4 * 512;
349 qemu_iovec_init_external(&s
->bus
->dma
->qiov
, &s
->bus
->dma
->iov
, 1);
351 s
->bus
->dma
->aiocb
= bdrv_aio_readv(s
->bs
, (int64_t)s
->lba
<< 2,
352 &s
->bus
->dma
->qiov
, n
* 4,
353 ide_atapi_cmd_read_dma_cb
, s
);
357 bdrv_acct_done(s
->bs
, &s
->acct
);
358 ide_set_inactive(s
, false);
361 /* start a CD-CDROM read command with DMA */
362 /* XXX: test if DMA is available */
363 static void ide_atapi_cmd_read_dma(IDEState
*s
, int lba
, int nb_sectors
,
367 s
->packet_transfer_size
= nb_sectors
* sector_size
;
368 s
->io_buffer_index
= 0;
369 s
->io_buffer_size
= 0;
370 s
->cd_sector_size
= sector_size
;
372 bdrv_acct_start(s
->bs
, &s
->acct
, s
->packet_transfer_size
, BDRV_ACCT_READ
);
374 /* XXX: check if BUSY_STAT should be set */
375 s
->status
= READY_STAT
| SEEK_STAT
| DRQ_STAT
| BUSY_STAT
;
376 ide_start_dma(s
, ide_atapi_cmd_read_dma_cb
);
379 static void ide_atapi_cmd_read(IDEState
*s
, int lba
, int nb_sectors
,
382 #ifdef DEBUG_IDE_ATAPI
383 printf("read %s: LBA=%d nb_sectors=%d\n", s
->atapi_dma
? "dma" : "pio",
387 ide_atapi_cmd_read_dma(s
, lba
, nb_sectors
, sector_size
);
389 ide_atapi_cmd_read_pio(s
, lba
, nb_sectors
, sector_size
);
393 static inline uint8_t ide_atapi_set_profile(uint8_t *buf
, uint8_t *index
,
396 uint8_t *buf_profile
= buf
+ 12; /* start of profiles */
398 buf_profile
+= ((*index
) * 4); /* start of indexed profile */
399 cpu_to_ube16 (buf_profile
, profile
);
400 buf_profile
[2] = ((buf_profile
[0] == buf
[6]) && (buf_profile
[1] == buf
[7]));
402 /* each profile adds 4 bytes to the response */
404 buf
[11] += 4; /* Additional Length */
409 static int ide_dvd_read_structure(IDEState
*s
, int format
,
410 const uint8_t *packet
, uint8_t *buf
)
413 case 0x0: /* Physical format information */
415 int layer
= packet
[6];
416 uint64_t total_sectors
;
419 return -ASC_INV_FIELD_IN_CMD_PACKET
;
421 total_sectors
= s
->nb_sectors
>> 2;
422 if (total_sectors
== 0) {
423 return -ASC_MEDIUM_NOT_PRESENT
;
426 buf
[4] = 1; /* DVD-ROM, part version 1 */
427 buf
[5] = 0xf; /* 120mm disc, minimum rate unspecified */
428 buf
[6] = 1; /* one layer, read-only (per MMC-2 spec) */
429 buf
[7] = 0; /* default densities */
431 /* FIXME: 0x30000 per spec? */
432 cpu_to_ube32(buf
+ 8, 0); /* start sector */
433 cpu_to_ube32(buf
+ 12, total_sectors
- 1); /* end sector */
434 cpu_to_ube32(buf
+ 16, total_sectors
- 1); /* l0 end sector */
436 /* Size of buffer, not including 2 byte size field */
437 stw_be_p(buf
, 2048 + 2);
439 /* 2k data + 4 byte header */
443 case 0x01: /* DVD copyright information */
444 buf
[4] = 0; /* no copyright data */
445 buf
[5] = 0; /* no region restrictions */
447 /* Size of buffer, not including 2 byte size field */
448 stw_be_p(buf
, 4 + 2);
450 /* 4 byte header + 4 byte data */
453 case 0x03: /* BCA information - invalid field for no BCA info */
454 return -ASC_INV_FIELD_IN_CMD_PACKET
;
456 case 0x04: /* DVD disc manufacturing information */
457 /* Size of buffer, not including 2 byte size field */
458 stw_be_p(buf
, 2048 + 2);
460 /* 2k data + 4 byte header */
465 * This lists all the command capabilities above. Add new ones
466 * in order and update the length and buffer return values.
469 buf
[4] = 0x00; /* Physical format */
470 buf
[5] = 0x40; /* Not writable, is readable */
471 stw_be_p(buf
+ 6, 2048 + 4);
473 buf
[8] = 0x01; /* Copyright info */
474 buf
[9] = 0x40; /* Not writable, is readable */
475 stw_be_p(buf
+ 10, 4 + 4);
477 buf
[12] = 0x03; /* BCA info */
478 buf
[13] = 0x40; /* Not writable, is readable */
479 stw_be_p(buf
+ 14, 188 + 4);
481 buf
[16] = 0x04; /* Manufacturing info */
482 buf
[17] = 0x40; /* Not writable, is readable */
483 stw_be_p(buf
+ 18, 2048 + 4);
485 /* Size of buffer, not including 2 byte size field */
486 stw_be_p(buf
, 16 + 2);
488 /* data written + 4 byte header */
491 default: /* TODO: formats beyond DVD-ROM requires */
492 return -ASC_INV_FIELD_IN_CMD_PACKET
;
496 static unsigned int event_status_media(IDEState
*s
,
499 uint8_t event_code
, media_status
;
503 media_status
= MS_TRAY_OPEN
;
504 } else if (bdrv_is_inserted(s
->bs
)) {
505 media_status
= MS_MEDIA_PRESENT
;
508 /* Event notification descriptor */
509 event_code
= MEC_NO_CHANGE
;
510 if (media_status
!= MS_TRAY_OPEN
) {
511 if (s
->events
.new_media
) {
512 event_code
= MEC_NEW_MEDIA
;
513 s
->events
.new_media
= false;
514 } else if (s
->events
.eject_request
) {
515 event_code
= MEC_EJECT_REQUESTED
;
516 s
->events
.eject_request
= false;
521 buf
[5] = media_status
;
523 /* These fields are reserved, just clear them. */
527 return 8; /* We wrote to 4 extra bytes from the header */
530 static void cmd_get_event_status_notification(IDEState
*s
,
533 const uint8_t *packet
= buf
;
537 uint8_t polled
; /* lsb bit is polled; others are reserved */
538 uint8_t reserved2
[2];
540 uint8_t reserved3
[2];
543 } QEMU_PACKED
*gesn_cdb
;
547 uint8_t notification_class
;
548 uint8_t supported_events
;
549 } QEMU_PACKED
*gesn_event_header
;
550 unsigned int max_len
, used_len
;
552 gesn_cdb
= (void *)packet
;
553 gesn_event_header
= (void *)buf
;
555 max_len
= be16_to_cpu(gesn_cdb
->len
);
557 /* It is fine by the MMC spec to not support async mode operations */
558 if (!(gesn_cdb
->polled
& 0x01)) { /* asynchronous mode */
559 /* Only polling is supported, asynchronous mode is not. */
560 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
,
561 ASC_INV_FIELD_IN_CMD_PACKET
);
565 /* polling mode operation */
568 * These are the supported events.
570 * We currently only support requests of the 'media' type.
571 * Notification class requests and supported event classes are bitmasks,
572 * but they are build from the same values as the "notification class"
575 gesn_event_header
->supported_events
= 1 << GESN_MEDIA
;
578 * We use |= below to set the class field; other bits in this byte
579 * are reserved now but this is useful to do if we have to use the
580 * reserved fields later.
582 gesn_event_header
->notification_class
= 0;
585 * Responses to requests are to be based on request priority. The
586 * notification_class_request_type enum above specifies the
587 * priority: upper elements are higher prio than lower ones.
589 if (gesn_cdb
->class & (1 << GESN_MEDIA
)) {
590 gesn_event_header
->notification_class
|= GESN_MEDIA
;
591 used_len
= event_status_media(s
, buf
);
593 gesn_event_header
->notification_class
= 0x80; /* No event available */
594 used_len
= sizeof(*gesn_event_header
);
596 gesn_event_header
->len
= cpu_to_be16(used_len
597 - sizeof(*gesn_event_header
));
598 ide_atapi_cmd_reply(s
, used_len
, max_len
);
601 static void cmd_request_sense(IDEState
*s
, uint8_t *buf
)
603 int max_len
= buf
[4];
606 buf
[0] = 0x70 | (1 << 7);
607 buf
[2] = s
->sense_key
;
611 if (s
->sense_key
== UNIT_ATTENTION
) {
612 s
->sense_key
= NO_SENSE
;
615 ide_atapi_cmd_reply(s
, 18, max_len
);
618 static void cmd_inquiry(IDEState
*s
, uint8_t *buf
)
620 int max_len
= buf
[4];
622 buf
[0] = 0x05; /* CD-ROM */
623 buf
[1] = 0x80; /* removable */
624 buf
[2] = 0x00; /* ISO */
625 buf
[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
626 buf
[4] = 31; /* additional length */
627 buf
[5] = 0; /* reserved */
628 buf
[6] = 0; /* reserved */
629 buf
[7] = 0; /* reserved */
630 padstr8(buf
+ 8, 8, "QEMU");
631 padstr8(buf
+ 16, 16, "QEMU DVD-ROM");
632 padstr8(buf
+ 32, 4, s
->version
);
633 ide_atapi_cmd_reply(s
, 36, max_len
);
636 static void cmd_get_configuration(IDEState
*s
, uint8_t *buf
)
642 /* only feature 0 is supported */
643 if (buf
[2] != 0 || buf
[3] != 0) {
644 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
,
645 ASC_INV_FIELD_IN_CMD_PACKET
);
649 /* XXX: could result in alignment problems in some architectures */
650 max_len
= ube16_to_cpu(buf
+ 7);
653 * XXX: avoid overflow for io_buffer if max_len is bigger than
654 * the size of that buffer (dimensioned to max number of
655 * sectors to transfer at once)
657 * Only a problem if the feature/profiles grow.
660 /* XXX: assume 1 sector */
664 memset(buf
, 0, max_len
);
666 * the number of sectors from the media tells us which profile
667 * to use as current. 0 means there is no media
669 if (media_is_dvd(s
)) {
670 cpu_to_ube16(buf
+ 6, MMC_PROFILE_DVD_ROM
);
671 } else if (media_is_cd(s
)) {
672 cpu_to_ube16(buf
+ 6, MMC_PROFILE_CD_ROM
);
675 buf
[10] = 0x02 | 0x01; /* persistent and current */
676 len
= 12; /* headers: 8 + 4 */
677 len
+= ide_atapi_set_profile(buf
, &index
, MMC_PROFILE_DVD_ROM
);
678 len
+= ide_atapi_set_profile(buf
, &index
, MMC_PROFILE_CD_ROM
);
679 cpu_to_ube32(buf
, len
- 4); /* data length */
681 ide_atapi_cmd_reply(s
, len
, max_len
);
684 static void cmd_mode_sense(IDEState
*s
, uint8_t *buf
)
689 max_len
= ube16_to_cpu(buf
+ 7);
690 action
= buf
[2] >> 6;
691 code
= buf
[2] & 0x3f;
694 case 0: /* current values */
696 case MODE_PAGE_R_W_ERROR
: /* error recovery */
697 cpu_to_ube16(&buf
[0], 16 - 2);
705 buf
[8] = MODE_PAGE_R_W_ERROR
;
713 ide_atapi_cmd_reply(s
, 16, max_len
);
715 case MODE_PAGE_AUDIO_CTL
:
716 cpu_to_ube16(&buf
[0], 24 - 2);
724 buf
[8] = MODE_PAGE_AUDIO_CTL
;
726 /* Fill with CDROM audio volume */
732 ide_atapi_cmd_reply(s
, 24, max_len
);
734 case MODE_PAGE_CAPABILITIES
:
735 cpu_to_ube16(&buf
[0], 30 - 2);
743 buf
[8] = MODE_PAGE_CAPABILITIES
;
745 buf
[10] = 0x3b; /* read CDR/CDRW/DVDROM/DVDR/DVDRAM */
748 /* Claim PLAY_AUDIO capability (0x01) since some Linux
749 code checks for this to automount media. */
752 buf
[14] = (1 << 0) | (1 << 3) | (1 << 5);
753 if (s
->tray_locked
) {
756 buf
[15] = 0x00; /* No volume & mute control, no changer */
757 cpu_to_ube16(&buf
[16], 704); /* 4x read speed */
758 buf
[18] = 0; /* Two volume levels */
760 cpu_to_ube16(&buf
[20], 512); /* 512k buffer */
761 cpu_to_ube16(&buf
[22], 704); /* 4x read speed current */
768 ide_atapi_cmd_reply(s
, 30, max_len
);
774 case 1: /* changeable values */
776 case 2: /* default values */
779 case 3: /* saved values */
780 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
,
781 ASC_SAVING_PARAMETERS_NOT_SUPPORTED
);
787 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
, ASC_INV_FIELD_IN_CMD_PACKET
);
790 static void cmd_test_unit_ready(IDEState
*s
, uint8_t *buf
)
792 /* Not Ready Conditions are already handled in ide_atapi_cmd(), so if we
793 * come here, we know that it's ready. */
797 static void cmd_prevent_allow_medium_removal(IDEState
*s
, uint8_t* buf
)
799 s
->tray_locked
= buf
[4] & 1;
800 bdrv_lock_medium(s
->bs
, buf
[4] & 1);
804 static void cmd_read(IDEState
*s
, uint8_t* buf
)
808 if (buf
[0] == GPCMD_READ_10
) {
809 nb_sectors
= ube16_to_cpu(buf
+ 7);
811 nb_sectors
= ube32_to_cpu(buf
+ 6);
814 lba
= ube32_to_cpu(buf
+ 2);
815 if (nb_sectors
== 0) {
820 ide_atapi_cmd_read(s
, lba
, nb_sectors
, 2048);
823 static void cmd_read_cd(IDEState
*s
, uint8_t* buf
)
825 int nb_sectors
, lba
, transfer_request
;
827 nb_sectors
= (buf
[6] << 16) | (buf
[7] << 8) | buf
[8];
828 lba
= ube32_to_cpu(buf
+ 2);
830 if (nb_sectors
== 0) {
835 transfer_request
= buf
[9];
836 switch(transfer_request
& 0xf8) {
843 ide_atapi_cmd_read(s
, lba
, nb_sectors
, 2048);
847 ide_atapi_cmd_read(s
, lba
, nb_sectors
, 2352);
850 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
,
851 ASC_INV_FIELD_IN_CMD_PACKET
);
856 static void cmd_seek(IDEState
*s
, uint8_t* buf
)
859 uint64_t total_sectors
= s
->nb_sectors
>> 2;
861 lba
= ube32_to_cpu(buf
+ 2);
862 if (lba
>= total_sectors
) {
863 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
, ASC_LOGICAL_BLOCK_OOR
);
870 static void cmd_start_stop_unit(IDEState
*s
, uint8_t* buf
)
873 bool start
= buf
[4] & 1;
874 bool loej
= buf
[4] & 2; /* load on start, eject on !start */
875 int pwrcnd
= buf
[4] & 0xf0;
878 /* eject/load only happens for power condition == 0 */
883 if (!start
&& !s
->tray_open
&& s
->tray_locked
) {
884 sense
= bdrv_is_inserted(s
->bs
)
885 ? NOT_READY
: ILLEGAL_REQUEST
;
886 ide_atapi_cmd_error(s
, sense
, ASC_MEDIA_REMOVAL_PREVENTED
);
890 if (s
->tray_open
!= !start
) {
891 bdrv_eject(s
->bs
, !start
);
892 s
->tray_open
= !start
;
899 static void cmd_mechanism_status(IDEState
*s
, uint8_t* buf
)
901 int max_len
= ube16_to_cpu(buf
+ 8);
903 cpu_to_ube16(buf
, 0);
909 cpu_to_ube16(buf
+ 6, 0);
910 ide_atapi_cmd_reply(s
, 8, max_len
);
913 static void cmd_read_toc_pma_atip(IDEState
*s
, uint8_t* buf
)
915 int format
, msf
, start_track
, len
;
917 uint64_t total_sectors
= s
->nb_sectors
>> 2;
919 max_len
= ube16_to_cpu(buf
+ 7);
920 format
= buf
[9] >> 6;
921 msf
= (buf
[1] >> 1) & 1;
922 start_track
= buf
[6];
926 len
= cdrom_read_toc(total_sectors
, buf
, msf
, start_track
);
929 ide_atapi_cmd_reply(s
, len
, max_len
);
932 /* multi session : only a single session defined */
937 ide_atapi_cmd_reply(s
, 12, max_len
);
940 len
= cdrom_read_toc_raw(total_sectors
, buf
, msf
, start_track
);
943 ide_atapi_cmd_reply(s
, len
, max_len
);
947 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
,
948 ASC_INV_FIELD_IN_CMD_PACKET
);
952 static void cmd_read_cdvd_capacity(IDEState
*s
, uint8_t* buf
)
954 uint64_t total_sectors
= s
->nb_sectors
>> 2;
956 /* NOTE: it is really the number of sectors minus 1 */
957 cpu_to_ube32(buf
, total_sectors
- 1);
958 cpu_to_ube32(buf
+ 4, 2048);
959 ide_atapi_cmd_reply(s
, 8, 8);
962 static void cmd_read_disc_information(IDEState
*s
, uint8_t* buf
)
964 uint8_t type
= buf
[1] & 7;
965 uint32_t max_len
= ube16_to_cpu(buf
+ 7);
967 /* Types 1/2 are only defined for Blu-Ray. */
969 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
,
970 ASC_INV_FIELD_IN_CMD_PACKET
);
976 buf
[2] = 0xe; /* last session complete, disc finalized */
977 buf
[3] = 1; /* first track on disc */
978 buf
[4] = 1; /* # of sessions */
979 buf
[5] = 1; /* first track of last session */
980 buf
[6] = 1; /* last track of last session */
981 buf
[7] = 0x20; /* unrestricted use */
982 buf
[8] = 0x00; /* CD-ROM or DVD-ROM */
983 /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
984 /* 12-23: not meaningful for CD-ROM or DVD-ROM */
985 /* 24-31: disc bar code */
986 /* 32: disc application code */
987 /* 33: number of OPC tables */
989 ide_atapi_cmd_reply(s
, 34, max_len
);
992 static void cmd_read_dvd_structure(IDEState
*s
, uint8_t* buf
)
999 max_len
= ube16_to_cpu(buf
+ 8);
1001 if (format
< 0xff) {
1002 if (media_is_cd(s
)) {
1003 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
,
1004 ASC_INCOMPATIBLE_FORMAT
);
1006 } else if (!media_present(s
)) {
1007 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
,
1008 ASC_INV_FIELD_IN_CMD_PACKET
);
1013 memset(buf
, 0, max_len
> IDE_DMA_BUF_SECTORS
* 512 + 4 ?
1014 IDE_DMA_BUF_SECTORS
* 512 + 4 : max_len
);
1020 ret
= ide_dvd_read_structure(s
, format
, buf
, buf
);
1023 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
, -ret
);
1025 ide_atapi_cmd_reply(s
, ret
, max_len
);
1030 /* TODO: BD support, fall through for now */
1032 /* Generic disk structures */
1033 case 0x80: /* TODO: AACS volume identifier */
1034 case 0x81: /* TODO: AACS media serial number */
1035 case 0x82: /* TODO: AACS media identifier */
1036 case 0x83: /* TODO: AACS media key block */
1037 case 0x90: /* TODO: List of recognized format layers */
1038 case 0xc0: /* TODO: Write protection status */
1040 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
,
1041 ASC_INV_FIELD_IN_CMD_PACKET
);
1046 static void cmd_set_speed(IDEState
*s
, uint8_t* buf
)
1048 ide_atapi_cmd_ok(s
);
1053 * Only commands flagged as ALLOW_UA are allowed to run under a
1054 * unit attention condition. (See MMC-5, section 4.1.6.1)
1059 * Commands flagged with CHECK_READY can only execute if a medium is present.
1060 * Otherwise they report the Not Ready Condition. (See MMC-5, section
1066 static const struct {
1067 void (*handler
)(IDEState
*s
, uint8_t *buf
);
1069 } atapi_cmd_table
[0x100] = {
1070 [ 0x00 ] = { cmd_test_unit_ready
, CHECK_READY
},
1071 [ 0x03 ] = { cmd_request_sense
, ALLOW_UA
},
1072 [ 0x12 ] = { cmd_inquiry
, ALLOW_UA
},
1073 [ 0x1b ] = { cmd_start_stop_unit
, 0 }, /* [1] */
1074 [ 0x1e ] = { cmd_prevent_allow_medium_removal
, 0 },
1075 [ 0x25 ] = { cmd_read_cdvd_capacity
, CHECK_READY
},
1076 [ 0x28 ] = { cmd_read
, /* (10) */ CHECK_READY
},
1077 [ 0x2b ] = { cmd_seek
, CHECK_READY
},
1078 [ 0x43 ] = { cmd_read_toc_pma_atip
, CHECK_READY
},
1079 [ 0x46 ] = { cmd_get_configuration
, ALLOW_UA
},
1080 [ 0x4a ] = { cmd_get_event_status_notification
, ALLOW_UA
},
1081 [ 0x51 ] = { cmd_read_disc_information
, CHECK_READY
},
1082 [ 0x5a ] = { cmd_mode_sense
, /* (10) */ 0 },
1083 [ 0xa8 ] = { cmd_read
, /* (12) */ CHECK_READY
},
1084 [ 0xad ] = { cmd_read_dvd_structure
, CHECK_READY
},
1085 [ 0xbb ] = { cmd_set_speed
, 0 },
1086 [ 0xbd ] = { cmd_mechanism_status
, 0 },
1087 [ 0xbe ] = { cmd_read_cd
, CHECK_READY
},
1088 /* [1] handler detects and reports not ready condition itself */
1091 void ide_atapi_cmd(IDEState
*s
)
1096 #ifdef DEBUG_IDE_ATAPI
1099 printf("ATAPI limit=0x%x packet:", s
->lcyl
| (s
->hcyl
<< 8));
1100 for(i
= 0; i
< ATAPI_PACKET_SIZE
; i
++) {
1101 printf(" %02x", buf
[i
]);
1107 * If there's a UNIT_ATTENTION condition pending, only command flagged with
1108 * ALLOW_UA are allowed to complete. with other commands getting a CHECK
1109 * condition response unless a higher priority status, defined by the drive
1112 if (s
->sense_key
== UNIT_ATTENTION
&&
1113 !(atapi_cmd_table
[s
->io_buffer
[0]].flags
& ALLOW_UA
)) {
1114 ide_atapi_cmd_check_status(s
);
1118 * When a CD gets changed, we have to report an ejected state and
1119 * then a loaded state to guests so that they detect tray
1120 * open/close and media change events. Guests that do not use
1121 * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
1122 * states rely on this behavior.
1124 if (!(atapi_cmd_table
[s
->io_buffer
[0]].flags
& ALLOW_UA
) &&
1125 !s
->tray_open
&& bdrv_is_inserted(s
->bs
) && s
->cdrom_changed
) {
1127 if (s
->cdrom_changed
== 1) {
1128 ide_atapi_cmd_error(s
, NOT_READY
, ASC_MEDIUM_NOT_PRESENT
);
1129 s
->cdrom_changed
= 2;
1131 ide_atapi_cmd_error(s
, UNIT_ATTENTION
, ASC_MEDIUM_MAY_HAVE_CHANGED
);
1132 s
->cdrom_changed
= 0;
1138 /* Report a Not Ready condition if appropriate for the command */
1139 if ((atapi_cmd_table
[s
->io_buffer
[0]].flags
& CHECK_READY
) &&
1140 (!media_present(s
) || !bdrv_is_inserted(s
->bs
)))
1142 ide_atapi_cmd_error(s
, NOT_READY
, ASC_MEDIUM_NOT_PRESENT
);
1146 /* Execute the command */
1147 if (atapi_cmd_table
[s
->io_buffer
[0]].handler
) {
1148 atapi_cmd_table
[s
->io_buffer
[0]].handler(s
, buf
);
1152 ide_atapi_cmd_error(s
, ILLEGAL_REQUEST
, ASC_ILLEGAL_OPCODE
);