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"
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 ide_transfer_stop(s);
178 s->status = READY_STAT | SEEK_STAT;
179 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
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 s->bus->dma->ops->start_dma(s->bus->dma, s,
259 ide_atapi_cmd_read_dma_cb);
261 s->status = READY_STAT | SEEK_STAT;
262 ide_atapi_cmd_reply_end(s);
266 /* start a CD-CDROM read command */
267 static void ide_atapi_cmd_read_pio(IDEState *s, int lba, int nb_sectors,
271 s->packet_transfer_size = nb_sectors * sector_size;
272 s->elementary_transfer_size = 0;
273 s->io_buffer_index = sector_size;
274 s->cd_sector_size = sector_size;
276 s->status = READY_STAT | SEEK_STAT;
277 ide_atapi_cmd_reply_end(s);
280 static void ide_atapi_cmd_check_status(IDEState *s)
282 #ifdef DEBUG_IDE_ATAPI
283 printf("atapi_cmd_check_status\n");
285 s->error = MC_ERR | (UNIT_ATTENTION << 4);
286 s->status = ERR_STAT;
290 /* ATAPI DMA support */
292 /* XXX: handle read errors */
293 static void ide_atapi_cmd_read_dma_cb(void *opaque, int ret)
295 IDEState *s = opaque;
299 ide_atapi_io_error(s, ret);
303 if (s->io_buffer_size > 0) {
305 * For a cdrom read sector command (s->lba != -1),
306 * adjust the lba for the next s->io_buffer_size chunk
307 * and dma the current chunk.
308 * For a command != read (s->lba == -1), just transfer
312 if (s->cd_sector_size == 2352) {
314 cd_data_to_raw(s->io_buffer, s->lba);
316 n = s->io_buffer_size >> 11;
320 s->packet_transfer_size -= s->io_buffer_size;
321 if (s->bus->dma->ops->rw_buf(s->bus->dma, 1) == 0)
325 if (s->packet_transfer_size <= 0) {
326 s->status = READY_STAT | SEEK_STAT;
327 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
332 s->io_buffer_index = 0;
333 if (s->cd_sector_size == 2352) {
335 s->io_buffer_size = s->cd_sector_size;
338 n = s->packet_transfer_size >> 11;
339 if (n > (IDE_DMA_BUF_SECTORS / 4))
340 n = (IDE_DMA_BUF_SECTORS / 4);
341 s->io_buffer_size = n * 2048;
345 printf("aio_read_cd: lba=%u n=%d\n", s->lba, n);
348 s->bus->dma->iov.iov_base = (void *)(s->io_buffer + data_offset);
349 s->bus->dma->iov.iov_len = n * 4 * 512;
350 qemu_iovec_init_external(&s->bus->dma->qiov, &s->bus->dma->iov, 1);
352 s->bus->dma->aiocb = bdrv_aio_readv(s->bs, (int64_t)s->lba << 2,
353 &s->bus->dma->qiov, n * 4,
354 ide_atapi_cmd_read_dma_cb, s);
358 bdrv_acct_done(s->bs, &s->acct);
359 s->bus->dma->ops->add_status(s->bus->dma, BM_STATUS_INT);
363 /* start a CD-CDROM read command with DMA */
364 /* XXX: test if DMA is available */
365 static void ide_atapi_cmd_read_dma(IDEState *s, int lba, int nb_sectors,
369 s->packet_transfer_size = nb_sectors * sector_size;
370 s->io_buffer_index = 0;
371 s->io_buffer_size = 0;
372 s->cd_sector_size = sector_size;
374 bdrv_acct_start(s->bs, &s->acct, s->packet_transfer_size, BDRV_ACCT_READ);
376 /* XXX: check if BUSY_STAT should be set */
377 s->status = READY_STAT | SEEK_STAT | DRQ_STAT | BUSY_STAT;
378 s->bus->dma->ops->start_dma(s->bus->dma, s,
379 ide_atapi_cmd_read_dma_cb);
382 static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors,
385 #ifdef DEBUG_IDE_ATAPI
386 printf("read %s: LBA=%d nb_sectors=%d\n", s->atapi_dma ? "dma" : "pio",
390 ide_atapi_cmd_read_dma(s, lba, nb_sectors, sector_size);
392 ide_atapi_cmd_read_pio(s, lba, nb_sectors, sector_size);
396 static inline uint8_t ide_atapi_set_profile(uint8_t *buf, uint8_t *index,
399 uint8_t *buf_profile = buf + 12; /* start of profiles */
401 buf_profile += ((*index) * 4); /* start of indexed profile */
402 cpu_to_ube16 (buf_profile, profile);
403 buf_profile[2] = ((buf_profile[0] == buf[6]) && (buf_profile[1] == buf[7]));
405 /* each profile adds 4 bytes to the response */
407 buf[11] += 4; /* Additional Length */
412 static int ide_dvd_read_structure(IDEState *s, int format,
413 const uint8_t *packet, uint8_t *buf)
416 case 0x0: /* Physical format information */
418 int layer = packet[6];
419 uint64_t total_sectors;
422 return -ASC_INV_FIELD_IN_CMD_PACKET;
424 total_sectors = s->nb_sectors >> 2;
425 if (total_sectors == 0) {
426 return -ASC_MEDIUM_NOT_PRESENT;
429 buf[4] = 1; /* DVD-ROM, part version 1 */
430 buf[5] = 0xf; /* 120mm disc, minimum rate unspecified */
431 buf[6] = 1; /* one layer, read-only (per MMC-2 spec) */
432 buf[7] = 0; /* default densities */
434 /* FIXME: 0x30000 per spec? */
435 cpu_to_ube32(buf + 8, 0); /* start sector */
436 cpu_to_ube32(buf + 12, total_sectors - 1); /* end sector */
437 cpu_to_ube32(buf + 16, total_sectors - 1); /* l0 end sector */
439 /* Size of buffer, not including 2 byte size field */
440 cpu_to_be16wu((uint16_t *)buf, 2048 + 2);
442 /* 2k data + 4 byte header */
446 case 0x01: /* DVD copyright information */
447 buf[4] = 0; /* no copyright data */
448 buf[5] = 0; /* no region restrictions */
450 /* Size of buffer, not including 2 byte size field */
451 cpu_to_be16wu((uint16_t *)buf, 4 + 2);
453 /* 4 byte header + 4 byte data */
456 case 0x03: /* BCA information - invalid field for no BCA info */
457 return -ASC_INV_FIELD_IN_CMD_PACKET;
459 case 0x04: /* DVD disc manufacturing information */
460 /* Size of buffer, not including 2 byte size field */
461 cpu_to_be16wu((uint16_t *)buf, 2048 + 2);
463 /* 2k data + 4 byte header */
468 * This lists all the command capabilities above. Add new ones
469 * in order and update the length and buffer return values.
472 buf[4] = 0x00; /* Physical format */
473 buf[5] = 0x40; /* Not writable, is readable */
474 cpu_to_be16wu((uint16_t *)(buf + 6), 2048 + 4);
476 buf[8] = 0x01; /* Copyright info */
477 buf[9] = 0x40; /* Not writable, is readable */
478 cpu_to_be16wu((uint16_t *)(buf + 10), 4 + 4);
480 buf[12] = 0x03; /* BCA info */
481 buf[13] = 0x40; /* Not writable, is readable */
482 cpu_to_be16wu((uint16_t *)(buf + 14), 188 + 4);
484 buf[16] = 0x04; /* Manufacturing info */
485 buf[17] = 0x40; /* Not writable, is readable */
486 cpu_to_be16wu((uint16_t *)(buf + 18), 2048 + 4);
488 /* Size of buffer, not including 2 byte size field */
489 cpu_to_be16wu((uint16_t *)buf, 16 + 2);
491 /* data written + 4 byte header */
494 default: /* TODO: formats beyond DVD-ROM requires */
495 return -ASC_INV_FIELD_IN_CMD_PACKET;
499 static unsigned int event_status_media(IDEState *s,
502 uint8_t event_code, media_status;
506 media_status = MS_TRAY_OPEN;
507 } else if (bdrv_is_inserted(s->bs)) {
508 media_status = MS_MEDIA_PRESENT;
511 /* Event notification descriptor */
512 event_code = MEC_NO_CHANGE;
513 if (media_status != MS_TRAY_OPEN) {
514 if (s->events.new_media) {
515 event_code = MEC_NEW_MEDIA;
516 s->events.new_media = false;
517 } else if (s->events.eject_request) {
518 event_code = MEC_EJECT_REQUESTED;
519 s->events.eject_request = false;
524 buf[5] = media_status;
526 /* These fields are reserved, just clear them. */
530 return 8; /* We wrote to 4 extra bytes from the header */
533 static void cmd_get_event_status_notification(IDEState *s,
536 const uint8_t *packet = buf;
540 uint8_t polled; /* lsb bit is polled; others are reserved */
541 uint8_t reserved2[2];
543 uint8_t reserved3[2];
546 } QEMU_PACKED *gesn_cdb;
550 uint8_t notification_class;
551 uint8_t supported_events;
552 } QEMU_PACKED *gesn_event_header;
553 unsigned int max_len, used_len;
555 gesn_cdb = (void *)packet;
556 gesn_event_header = (void *)buf;
558 max_len = be16_to_cpu(gesn_cdb->len);
560 /* It is fine by the MMC spec to not support async mode operations */
561 if (!(gesn_cdb->polled & 0x01)) { /* asynchronous mode */
562 /* Only polling is supported, asynchronous mode is not. */
563 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
564 ASC_INV_FIELD_IN_CMD_PACKET);
568 /* polling mode operation */
571 * These are the supported events.
573 * We currently only support requests of the 'media' type.
574 * Notification class requests and supported event classes are bitmasks,
575 * but they are build from the same values as the "notification class"
578 gesn_event_header->supported_events = 1 << GESN_MEDIA;
581 * We use |= below to set the class field; other bits in this byte
582 * are reserved now but this is useful to do if we have to use the
583 * reserved fields later.
585 gesn_event_header->notification_class = 0;
588 * Responses to requests are to be based on request priority. The
589 * notification_class_request_type enum above specifies the
590 * priority: upper elements are higher prio than lower ones.
592 if (gesn_cdb->class & (1 << GESN_MEDIA)) {
593 gesn_event_header->notification_class |= GESN_MEDIA;
594 used_len = event_status_media(s, buf);
596 gesn_event_header->notification_class = 0x80; /* No event available */
597 used_len = sizeof(*gesn_event_header);
599 gesn_event_header->len = cpu_to_be16(used_len
600 - sizeof(*gesn_event_header));
601 ide_atapi_cmd_reply(s, used_len, max_len);
604 static void cmd_request_sense(IDEState *s, uint8_t *buf)
606 int max_len = buf[4];
609 buf[0] = 0x70 | (1 << 7);
610 buf[2] = s->sense_key;
614 if (s->sense_key == UNIT_ATTENTION) {
615 s->sense_key = NO_SENSE;
618 ide_atapi_cmd_reply(s, 18, max_len);
621 static void cmd_inquiry(IDEState *s, uint8_t *buf)
623 int max_len = buf[4];
625 buf[0] = 0x05; /* CD-ROM */
626 buf[1] = 0x80; /* removable */
627 buf[2] = 0x00; /* ISO */
628 buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
629 buf[4] = 31; /* additional length */
630 buf[5] = 0; /* reserved */
631 buf[6] = 0; /* reserved */
632 buf[7] = 0; /* reserved */
633 padstr8(buf + 8, 8, "QEMU");
634 padstr8(buf + 16, 16, "QEMU DVD-ROM");
635 padstr8(buf + 32, 4, s->version);
636 ide_atapi_cmd_reply(s, 36, max_len);
639 static void cmd_get_configuration(IDEState *s, uint8_t *buf)
645 /* only feature 0 is supported */
646 if (buf[2] != 0 || buf[3] != 0) {
647 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
648 ASC_INV_FIELD_IN_CMD_PACKET);
652 /* XXX: could result in alignment problems in some architectures */
653 max_len = ube16_to_cpu(buf + 7);
656 * XXX: avoid overflow for io_buffer if max_len is bigger than
657 * the size of that buffer (dimensioned to max number of
658 * sectors to transfer at once)
660 * Only a problem if the feature/profiles grow.
663 /* XXX: assume 1 sector */
667 memset(buf, 0, max_len);
669 * the number of sectors from the media tells us which profile
670 * to use as current. 0 means there is no media
672 if (media_is_dvd(s)) {
673 cpu_to_ube16(buf + 6, MMC_PROFILE_DVD_ROM);
674 } else if (media_is_cd(s)) {
675 cpu_to_ube16(buf + 6, MMC_PROFILE_CD_ROM);
678 buf[10] = 0x02 | 0x01; /* persistent and current */
679 len = 12; /* headers: 8 + 4 */
680 len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_DVD_ROM);
681 len += ide_atapi_set_profile(buf, &index, MMC_PROFILE_CD_ROM);
682 cpu_to_ube32(buf, len - 4); /* data length */
684 ide_atapi_cmd_reply(s, len, max_len);
687 static void cmd_mode_sense(IDEState *s, uint8_t *buf)
692 max_len = ube16_to_cpu(buf + 7);
693 action = buf[2] >> 6;
694 code = buf[2] & 0x3f;
697 case 0: /* current values */
699 case MODE_PAGE_R_W_ERROR: /* error recovery */
700 cpu_to_ube16(&buf[0], 16 - 2);
708 buf[8] = MODE_PAGE_R_W_ERROR;
716 ide_atapi_cmd_reply(s, 16, max_len);
718 case MODE_PAGE_AUDIO_CTL:
719 cpu_to_ube16(&buf[0], 24 - 2);
727 buf[8] = MODE_PAGE_AUDIO_CTL;
729 /* Fill with CDROM audio volume */
735 ide_atapi_cmd_reply(s, 24, max_len);
737 case MODE_PAGE_CAPABILITIES:
738 cpu_to_ube16(&buf[0], 30 - 2);
746 buf[8] = MODE_PAGE_CAPABILITIES;
748 buf[10] = 0x3b; /* read CDR/CDRW/DVDROM/DVDR/DVDRAM */
751 /* Claim PLAY_AUDIO capability (0x01) since some Linux
752 code checks for this to automount media. */
755 buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
756 if (s->tray_locked) {
759 buf[15] = 0x00; /* No volume & mute control, no changer */
760 cpu_to_ube16(&buf[16], 704); /* 4x read speed */
761 buf[18] = 0; /* Two volume levels */
763 cpu_to_ube16(&buf[20], 512); /* 512k buffer */
764 cpu_to_ube16(&buf[22], 704); /* 4x read speed current */
771 ide_atapi_cmd_reply(s, 30, max_len);
777 case 1: /* changeable values */
779 case 2: /* default values */
782 case 3: /* saved values */
783 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
784 ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
790 ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
793 static void cmd_test_unit_ready(IDEState *s, uint8_t *buf)
795 /* Not Ready Conditions are already handled in ide_atapi_cmd(), so if we
796 * come here, we know that it's ready. */
800 static void cmd_prevent_allow_medium_removal(IDEState *s, uint8_t* buf)
802 s->tray_locked = buf[4] & 1;
803 bdrv_lock_medium(s->bs, buf[4] & 1);
807 static void cmd_read(IDEState *s, uint8_t* buf)
811 if (buf[0] == GPCMD_READ_10) {
812 nb_sectors = ube16_to_cpu(buf + 7);
814 nb_sectors = ube32_to_cpu(buf + 6);
817 lba = ube32_to_cpu(buf + 2);
818 if (nb_sectors == 0) {
823 ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
826 static void cmd_read_cd(IDEState *s, uint8_t* buf)
828 int nb_sectors, lba, transfer_request;
830 nb_sectors = (buf[6] << 16) | (buf[7] << 8) | buf[8];
831 lba = ube32_to_cpu(buf + 2);
833 if (nb_sectors == 0) {
838 transfer_request = buf[9];
839 switch(transfer_request & 0xf8) {
846 ide_atapi_cmd_read(s, lba, nb_sectors, 2048);
850 ide_atapi_cmd_read(s, lba, nb_sectors, 2352);
853 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
854 ASC_INV_FIELD_IN_CMD_PACKET);
859 static void cmd_seek(IDEState *s, uint8_t* buf)
862 uint64_t total_sectors = s->nb_sectors >> 2;
864 lba = ube32_to_cpu(buf + 2);
865 if (lba >= total_sectors) {
866 ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
873 static void cmd_start_stop_unit(IDEState *s, uint8_t* buf)
876 bool start = buf[4] & 1;
877 bool loej = buf[4] & 2; /* load on start, eject on !start */
880 if (!start && !s->tray_open && s->tray_locked) {
881 sense = bdrv_is_inserted(s->bs)
882 ? NOT_READY : ILLEGAL_REQUEST;
883 ide_atapi_cmd_error(s, sense, ASC_MEDIA_REMOVAL_PREVENTED);
887 if (s->tray_open != !start) {
888 bdrv_eject(s->bs, !start);
889 s->tray_open = !start;
896 static void cmd_mechanism_status(IDEState *s, uint8_t* buf)
898 int max_len = ube16_to_cpu(buf + 8);
900 cpu_to_ube16(buf, 0);
906 cpu_to_ube16(buf + 6, 0);
907 ide_atapi_cmd_reply(s, 8, max_len);
910 static void cmd_read_toc_pma_atip(IDEState *s, uint8_t* buf)
912 int format, msf, start_track, len;
914 uint64_t total_sectors = s->nb_sectors >> 2;
916 max_len = ube16_to_cpu(buf + 7);
917 format = buf[9] >> 6;
918 msf = (buf[1] >> 1) & 1;
919 start_track = buf[6];
923 len = cdrom_read_toc(total_sectors, buf, msf, start_track);
926 ide_atapi_cmd_reply(s, len, max_len);
929 /* multi session : only a single session defined */
934 ide_atapi_cmd_reply(s, 12, max_len);
937 len = cdrom_read_toc_raw(total_sectors, buf, msf, start_track);
940 ide_atapi_cmd_reply(s, len, max_len);
944 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
945 ASC_INV_FIELD_IN_CMD_PACKET);
949 static void cmd_read_cdvd_capacity(IDEState *s, uint8_t* buf)
951 uint64_t total_sectors = s->nb_sectors >> 2;
953 /* NOTE: it is really the number of sectors minus 1 */
954 cpu_to_ube32(buf, total_sectors - 1);
955 cpu_to_ube32(buf + 4, 2048);
956 ide_atapi_cmd_reply(s, 8, 8);
959 static void cmd_read_disc_information(IDEState *s, uint8_t* buf)
961 uint8_t type = buf[1] & 7;
962 uint32_t max_len = ube16_to_cpu(buf + 7);
964 /* Types 1/2 are only defined for Blu-Ray. */
966 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
967 ASC_INV_FIELD_IN_CMD_PACKET);
973 buf[2] = 0xe; /* last session complete, disc finalized */
974 buf[3] = 1; /* first track on disc */
975 buf[4] = 1; /* # of sessions */
976 buf[5] = 1; /* first track of last session */
977 buf[6] = 1; /* last track of last session */
978 buf[7] = 0x20; /* unrestricted use */
979 buf[8] = 0x00; /* CD-ROM or DVD-ROM */
980 /* 9-10-11: most significant byte corresponding bytes 4-5-6 */
981 /* 12-23: not meaningful for CD-ROM or DVD-ROM */
982 /* 24-31: disc bar code */
983 /* 32: disc application code */
984 /* 33: number of OPC tables */
986 ide_atapi_cmd_reply(s, 34, max_len);
989 static void cmd_read_dvd_structure(IDEState *s, uint8_t* buf)
996 max_len = ube16_to_cpu(buf + 8);
999 if (media_is_cd(s)) {
1000 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
1001 ASC_INCOMPATIBLE_FORMAT);
1003 } else if (!media_present(s)) {
1004 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
1005 ASC_INV_FIELD_IN_CMD_PACKET);
1010 memset(buf, 0, max_len > IDE_DMA_BUF_SECTORS * 512 + 4 ?
1011 IDE_DMA_BUF_SECTORS * 512 + 4 : max_len);
1017 ret = ide_dvd_read_structure(s, format, buf, buf);
1020 ide_atapi_cmd_error(s, ILLEGAL_REQUEST, -ret);
1022 ide_atapi_cmd_reply(s, ret, max_len);
1027 /* TODO: BD support, fall through for now */
1029 /* Generic disk structures */
1030 case 0x80: /* TODO: AACS volume identifier */
1031 case 0x81: /* TODO: AACS media serial number */
1032 case 0x82: /* TODO: AACS media identifier */
1033 case 0x83: /* TODO: AACS media key block */
1034 case 0x90: /* TODO: List of recognized format layers */
1035 case 0xc0: /* TODO: Write protection status */
1037 ide_atapi_cmd_error(s, ILLEGAL_REQUEST,
1038 ASC_INV_FIELD_IN_CMD_PACKET);
1043 static void cmd_set_speed(IDEState *s, uint8_t* buf)
1045 ide_atapi_cmd_ok(s);
1050 * Only commands flagged as ALLOW_UA are allowed to run under a
1051 * unit attention condition. (See MMC-5, section 4.1.6.1)
1056 * Commands flagged with CHECK_READY can only execute if a medium is present.
1057 * Otherwise they report the Not Ready Condition. (See MMC-5, section
1063 static const struct {
1064 void (*handler)(IDEState *s, uint8_t *buf);
1066 } atapi_cmd_table[0x100] = {
1067 [ 0x00 ] = { cmd_test_unit_ready, CHECK_READY },
1068 [ 0x03 ] = { cmd_request_sense, ALLOW_UA },
1069 [ 0x12 ] = { cmd_inquiry, ALLOW_UA },
1070 [ 0x1b ] = { cmd_start_stop_unit, 0 }, /* [1] */
1071 [ 0x1e ] = { cmd_prevent_allow_medium_removal, 0 },
1072 [ 0x25 ] = { cmd_read_cdvd_capacity, CHECK_READY },
1073 [ 0x28 ] = { cmd_read, /* (10) */ CHECK_READY },
1074 [ 0x2b ] = { cmd_seek, CHECK_READY },
1075 [ 0x43 ] = { cmd_read_toc_pma_atip, CHECK_READY },
1076 [ 0x46 ] = { cmd_get_configuration, ALLOW_UA },
1077 [ 0x4a ] = { cmd_get_event_status_notification, ALLOW_UA },
1078 [ 0x51 ] = { cmd_read_disc_information, CHECK_READY },
1079 [ 0x5a ] = { cmd_mode_sense, /* (10) */ 0 },
1080 [ 0xa8 ] = { cmd_read, /* (12) */ CHECK_READY },
1081 [ 0xad ] = { cmd_read_dvd_structure, CHECK_READY },
1082 [ 0xbb ] = { cmd_set_speed, 0 },
1083 [ 0xbd ] = { cmd_mechanism_status, 0 },
1084 [ 0xbe ] = { cmd_read_cd, CHECK_READY },
1085 /* [1] handler detects and reports not ready condition itself */
1088 void ide_atapi_cmd(IDEState *s)
1093 #ifdef DEBUG_IDE_ATAPI
1096 printf("ATAPI limit=0x%x packet:", s->lcyl | (s->hcyl << 8));
1097 for(i = 0; i < ATAPI_PACKET_SIZE; i++) {
1098 printf(" %02x", buf[i]);
1104 * If there's a UNIT_ATTENTION condition pending, only command flagged with
1105 * ALLOW_UA are allowed to complete. with other commands getting a CHECK
1106 * condition response unless a higher priority status, defined by the drive
1109 if (s->sense_key == UNIT_ATTENTION &&
1110 !(atapi_cmd_table[s->io_buffer[0]].flags & ALLOW_UA)) {
1111 ide_atapi_cmd_check_status(s);
1115 * When a CD gets changed, we have to report an ejected state and
1116 * then a loaded state to guests so that they detect tray
1117 * open/close and media change events. Guests that do not use
1118 * GET_EVENT_STATUS_NOTIFICATION to detect such tray open/close
1119 * states rely on this behavior.
1121 if (!s->tray_open && bdrv_is_inserted(s->bs) && s->cdrom_changed) {
1122 ide_atapi_cmd_error(s, NOT_READY, ASC_MEDIUM_NOT_PRESENT);
1124 s->cdrom_changed = 0;
1125 s->sense_key = UNIT_ATTENTION;
1126 s->asc = ASC_MEDIUM_MAY_HAVE_CHANGED;
1130 /* Report a Not Ready condition if appropriate for the command */
1131 if ((atapi_cmd_table[s->io_buffer[0]].flags & CHECK_READY) &&
1132 (!media_present(s) || !bdrv_is_inserted(s->bs)))
1134 ide_atapi_cmd_error(s, NOT_READY, ASC_MEDIUM_NOT_PRESENT);
1138 /* Execute the command */
1139 if (atapi_cmd_table[s->io_buffer[0]].handler) {
1140 atapi_cmd_table[s->io_buffer[0]].handler(s, buf);
1144 ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_ILLEGAL_OPCODE);