2 * QEMU IDE disk and CD-ROM Emulator
4 * Copyright (c) 2003 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 /* debug IDE devices */
28 //#define DEBUG_IDE_ATAPI
30 /* Bits of HD_STATUS */
32 #define INDEX_STAT 0x02
33 #define ECC_STAT 0x04 /* Corrected error */
35 #define SEEK_STAT 0x10
37 #define WRERR_STAT 0x20
38 #define READY_STAT 0x40
39 #define BUSY_STAT 0x80
41 /* Bits for HD_ERROR */
42 #define MARK_ERR 0x01 /* Bad address mark */
43 #define TRK0_ERR 0x02 /* couldn't find track 0 */
44 #define ABRT_ERR 0x04 /* Command aborted */
45 #define MCR_ERR 0x08 /* media change request */
46 #define ID_ERR 0x10 /* ID field not found */
47 #define MC_ERR 0x20 /* media changed */
48 #define ECC_ERR 0x40 /* Uncorrectable ECC error */
49 #define BBD_ERR 0x80 /* pre-EIDE meaning: block marked bad */
50 #define ICRC_ERR 0x80 /* new meaning: CRC error during transfer */
52 /* Bits of HD_NSECTOR */
58 #define IDE_CMD_RESET 0x04
59 #define IDE_CMD_DISABLE_IRQ 0x02
61 /* ATA/ATAPI Commands pre T13 Spec */
66 #define CFA_REQ_EXT_ERROR_CODE 0x03 /* CFA Request Extended Error Code */
70 #define WIN_SRST 0x08 /* ATAPI soft reset command */
71 #define WIN_DEVICE_RESET 0x08
75 #define WIN_RECAL 0x10
76 #define WIN_RESTORE WIN_RECAL
80 #define WIN_READ 0x20 /* 28-Bit */
81 #define WIN_READ_ONCE 0x21 /* 28-Bit without retries */
82 #define WIN_READ_LONG 0x22 /* 28-Bit */
83 #define WIN_READ_LONG_ONCE 0x23 /* 28-Bit without retries */
84 #define WIN_READ_EXT 0x24 /* 48-Bit */
85 #define WIN_READDMA_EXT 0x25 /* 48-Bit */
86 #define WIN_READDMA_QUEUED_EXT 0x26 /* 48-Bit */
87 #define WIN_READ_NATIVE_MAX_EXT 0x27 /* 48-Bit */
91 #define WIN_MULTREAD_EXT 0x29 /* 48-Bit */
95 #define WIN_WRITE 0x30 /* 28-Bit */
96 #define WIN_WRITE_ONCE 0x31 /* 28-Bit without retries */
97 #define WIN_WRITE_LONG 0x32 /* 28-Bit */
98 #define WIN_WRITE_LONG_ONCE 0x33 /* 28-Bit without retries */
99 #define WIN_WRITE_EXT 0x34 /* 48-Bit */
100 #define WIN_WRITEDMA_EXT 0x35 /* 48-Bit */
101 #define WIN_WRITEDMA_QUEUED_EXT 0x36 /* 48-Bit */
102 #define WIN_SET_MAX_EXT 0x37 /* 48-Bit */
103 #define CFA_WRITE_SECT_WO_ERASE 0x38 /* CFA Write Sectors without erase */
104 #define WIN_MULTWRITE_EXT 0x39 /* 48-Bit */
106 * 0x3A->0x3B Reserved
108 #define WIN_WRITE_VERIFY 0x3C /* 28-Bit */
110 * 0x3D->0x3F Reserved
112 #define WIN_VERIFY 0x40 /* 28-Bit - Read Verify Sectors */
113 #define WIN_VERIFY_ONCE 0x41 /* 28-Bit - without retries */
114 #define WIN_VERIFY_EXT 0x42 /* 48-Bit */
116 * 0x43->0x4F Reserved
118 #define WIN_FORMAT 0x50
120 * 0x51->0x5F Reserved
122 #define WIN_INIT 0x60
124 * 0x61->0x5F Reserved
126 #define WIN_SEEK 0x70 /* 0x70-0x7F Reserved */
127 #define CFA_TRANSLATE_SECTOR 0x87 /* CFA Translate Sector */
128 #define WIN_DIAGNOSE 0x90
129 #define WIN_SPECIFY 0x91 /* set drive geometry translation */
130 #define WIN_DOWNLOAD_MICROCODE 0x92
131 #define WIN_STANDBYNOW2 0x94
132 #define WIN_STANDBY2 0x96
133 #define WIN_SETIDLE2 0x97
134 #define WIN_CHECKPOWERMODE2 0x98
135 #define WIN_SLEEPNOW2 0x99
139 #define WIN_PACKETCMD 0xA0 /* Send a packet command. */
140 #define WIN_PIDENTIFY 0xA1 /* identify ATAPI device */
141 #define WIN_QUEUED_SERVICE 0xA2
142 #define WIN_SMART 0xB0 /* self-monitoring and reporting */
143 #define CFA_ERASE_SECTORS 0xC0
144 #define WIN_MULTREAD 0xC4 /* read sectors using multiple mode*/
145 #define WIN_MULTWRITE 0xC5 /* write sectors using multiple mode */
146 #define WIN_SETMULT 0xC6 /* enable/disable multiple mode */
147 #define WIN_READDMA_QUEUED 0xC7 /* read sectors using Queued DMA transfers */
148 #define WIN_READDMA 0xC8 /* read sectors using DMA transfers */
149 #define WIN_READDMA_ONCE 0xC9 /* 28-Bit - without retries */
150 #define WIN_WRITEDMA 0xCA /* write sectors using DMA transfers */
151 #define WIN_WRITEDMA_ONCE 0xCB /* 28-Bit - without retries */
152 #define WIN_WRITEDMA_QUEUED 0xCC /* write sectors using Queued DMA transfers */
153 #define CFA_WRITE_MULTI_WO_ERASE 0xCD /* CFA Write multiple without erase */
154 #define WIN_GETMEDIASTATUS 0xDA
155 #define WIN_ACKMEDIACHANGE 0xDB /* ATA-1, ATA-2 vendor */
156 #define WIN_POSTBOOT 0xDC
157 #define WIN_PREBOOT 0xDD
158 #define WIN_DOORLOCK 0xDE /* lock door on removable drives */
159 #define WIN_DOORUNLOCK 0xDF /* unlock door on removable drives */
160 #define WIN_STANDBYNOW1 0xE0
161 #define WIN_IDLEIMMEDIATE 0xE1 /* force drive to become "ready" */
162 #define WIN_STANDBY 0xE2 /* Set device in Standby Mode */
163 #define WIN_SETIDLE1 0xE3
164 #define WIN_READ_BUFFER 0xE4 /* force read only 1 sector */
165 #define WIN_CHECKPOWERMODE1 0xE5
166 #define WIN_SLEEPNOW1 0xE6
167 #define WIN_FLUSH_CACHE 0xE7
168 #define WIN_WRITE_BUFFER 0xE8 /* force write only 1 sector */
169 #define WIN_WRITE_SAME 0xE9 /* read ata-2 to use */
170 /* SET_FEATURES 0x22 or 0xDD */
171 #define WIN_FLUSH_CACHE_EXT 0xEA /* 48-Bit */
172 #define WIN_IDENTIFY 0xEC /* ask drive to identify itself */
173 #define WIN_MEDIAEJECT 0xED
174 #define WIN_IDENTIFY_DMA 0xEE /* same as WIN_IDENTIFY, but DMA */
175 #define WIN_SETFEATURES 0xEF /* set special drive features */
176 #define EXABYTE_ENABLE_NEST 0xF0
177 #define WIN_SECURITY_SET_PASS 0xF1
178 #define WIN_SECURITY_UNLOCK 0xF2
179 #define WIN_SECURITY_ERASE_PREPARE 0xF3
180 #define WIN_SECURITY_ERASE_UNIT 0xF4
181 #define WIN_SECURITY_FREEZE_LOCK 0xF5
182 #define WIN_SECURITY_DISABLE 0xF6
183 #define WIN_READ_NATIVE_MAX 0xF8 /* return the native maximum address */
184 #define WIN_SET_MAX 0xF9
185 #define DISABLE_SEAGATE 0xFB
187 /* set to 1 set disable mult support */
188 #define MAX_MULT_SECTORS 8
192 #define ATAPI_PACKET_SIZE 12
194 /* The generic packet command opcodes for CD/DVD Logical Units,
195 * From Table 57 of the SFF8090 Ver. 3 (Mt. Fuji) draft standard. */
196 #define GPCMD_BLANK 0xa1
197 #define GPCMD_CLOSE_TRACK 0x5b
198 #define GPCMD_FLUSH_CACHE 0x35
199 #define GPCMD_FORMAT_UNIT 0x04
200 #define GPCMD_GET_CONFIGURATION 0x46
201 #define GPCMD_GET_EVENT_STATUS_NOTIFICATION 0x4a
202 #define GPCMD_GET_PERFORMANCE 0xac
203 #define GPCMD_INQUIRY 0x12
204 #define GPCMD_LOAD_UNLOAD 0xa6
205 #define GPCMD_MECHANISM_STATUS 0xbd
206 #define GPCMD_MODE_SELECT_10 0x55
207 #define GPCMD_MODE_SENSE_10 0x5a
208 #define GPCMD_PAUSE_RESUME 0x4b
209 #define GPCMD_PLAY_AUDIO_10 0x45
210 #define GPCMD_PLAY_AUDIO_MSF 0x47
211 #define GPCMD_PLAY_AUDIO_TI 0x48
212 #define GPCMD_PLAY_CD 0xbc
213 #define GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL 0x1e
214 #define GPCMD_READ_10 0x28
215 #define GPCMD_READ_12 0xa8
216 #define GPCMD_READ_CDVD_CAPACITY 0x25
217 #define GPCMD_READ_CD 0xbe
218 #define GPCMD_READ_CD_MSF 0xb9
219 #define GPCMD_READ_DISC_INFO 0x51
220 #define GPCMD_READ_DVD_STRUCTURE 0xad
221 #define GPCMD_READ_FORMAT_CAPACITIES 0x23
222 #define GPCMD_READ_HEADER 0x44
223 #define GPCMD_READ_TRACK_RZONE_INFO 0x52
224 #define GPCMD_READ_SUBCHANNEL 0x42
225 #define GPCMD_READ_TOC_PMA_ATIP 0x43
226 #define GPCMD_REPAIR_RZONE_TRACK 0x58
227 #define GPCMD_REPORT_KEY 0xa4
228 #define GPCMD_REQUEST_SENSE 0x03
229 #define GPCMD_RESERVE_RZONE_TRACK 0x53
230 #define GPCMD_SCAN 0xba
231 #define GPCMD_SEEK 0x2b
232 #define GPCMD_SEND_DVD_STRUCTURE 0xad
233 #define GPCMD_SEND_EVENT 0xa2
234 #define GPCMD_SEND_KEY 0xa3
235 #define GPCMD_SEND_OPC 0x54
236 #define GPCMD_SET_READ_AHEAD 0xa7
237 #define GPCMD_SET_STREAMING 0xb6
238 #define GPCMD_START_STOP_UNIT 0x1b
239 #define GPCMD_STOP_PLAY_SCAN 0x4e
240 #define GPCMD_TEST_UNIT_READY 0x00
241 #define GPCMD_VERIFY_10 0x2f
242 #define GPCMD_WRITE_10 0x2a
243 #define GPCMD_WRITE_AND_VERIFY_10 0x2e
244 /* This is listed as optional in ATAPI 2.6, but is (curiously)
245 * missing from Mt. Fuji, Table 57. It _is_ mentioned in Mt. Fuji
246 * Table 377 as an MMC command for SCSi devices though... Most ATAPI
247 * drives support it. */
248 #define GPCMD_SET_SPEED 0xbb
249 /* This seems to be a SCSI specific CD-ROM opcode
250 * to play data at track/index */
251 #define GPCMD_PLAYAUDIO_TI 0x48
253 * From MS Media Status Notification Support Specification. For
256 #define GPCMD_GET_MEDIA_STATUS 0xda
258 /* Mode page codes for mode sense/set */
259 #define GPMODE_R_W_ERROR_PAGE 0x01
260 #define GPMODE_WRITE_PARMS_PAGE 0x05
261 #define GPMODE_AUDIO_CTL_PAGE 0x0e
262 #define GPMODE_POWER_PAGE 0x1a
263 #define GPMODE_FAULT_FAIL_PAGE 0x1c
264 #define GPMODE_TO_PROTECT_PAGE 0x1d
265 #define GPMODE_CAPABILITIES_PAGE 0x2a
266 #define GPMODE_ALL_PAGES 0x3f
267 /* Not in Mt. Fuji, but in ATAPI 2.6 -- depricated now in favor
268 * of MODE_SENSE_POWER_PAGE */
269 #define GPMODE_CDROM_PAGE 0x0d
271 #define ATAPI_INT_REASON_CD 0x01 /* 0 = data transfer */
272 #define ATAPI_INT_REASON_IO 0x02 /* 1 = transfer to the host */
273 #define ATAPI_INT_REASON_REL 0x04
274 #define ATAPI_INT_REASON_TAG 0xf8
276 /* same constants as bochs */
277 #define ASC_ILLEGAL_OPCODE 0x20
278 #define ASC_LOGICAL_BLOCK_OOR 0x21
279 #define ASC_INV_FIELD_IN_CMD_PACKET 0x24
280 #define ASC_MEDIUM_NOT_PRESENT 0x3a
281 #define ASC_SAVING_PARAMETERS_NOT_SUPPORTED 0x39
284 #define SENSE_NOT_READY 2
285 #define SENSE_ILLEGAL_REQUEST 5
286 #define SENSE_UNIT_ATTENTION 6
290 typedef void EndTransferFunc(struct IDEState *);
292 /* NOTE: IDEState represents in fact one drive */
293 typedef struct IDEState {
296 int cylinders, heads, sectors;
303 uint16_t nsector; /* 0 is 256 to ease computations */
309 /* 0x3f6 command, only meaningful for drive 0 */
311 /* depends on bit 4 in select, only meaningful for drive 0 */
312 struct IDEState *cur_drive;
313 BlockDriverState *bs;
317 int packet_transfer_size;
318 int elementary_transfer_size;
321 /* transfer handling */
322 int req_nb_sectors; /* number of sectors per interrupt */
323 EndTransferFunc *end_transfer_func;
326 uint8_t io_buffer[MAX_MULT_SECTORS*512 + 4];
329 static void padstr(char *str, const char *src, int len)
332 for(i = 0; i < len; i++) {
337 *(char *)((long)str ^ 1) = v;
342 static void padstr8(uint8_t *buf, int buf_size, const char *src)
345 for(i = 0; i < buf_size; i++) {
353 static void put_le16(uint16_t *p, unsigned int v)
355 #ifdef WORDS_BIGENDIAN
362 static void ide_identify(IDEState *s)
365 unsigned int oldsize;
367 memset(s->io_buffer, 0, 512);
368 p = (uint16_t *)s->io_buffer;
369 put_le16(p + 0, 0x0040);
370 put_le16(p + 1, s->cylinders);
371 put_le16(p + 3, s->heads);
372 put_le16(p + 4, 512 * s->sectors); /* XXX: retired, remove ? */
373 put_le16(p + 5, 512); /* XXX: retired, remove ? */
374 put_le16(p + 6, s->sectors);
375 padstr((uint8_t *)(p + 10), "QM00001", 20); /* serial number */
376 put_le16(p + 20, 3); /* XXX: retired, remove ? */
377 put_le16(p + 21, 512); /* cache size in sectors */
378 put_le16(p + 22, 4); /* ecc bytes */
379 padstr((uint8_t *)(p + 23), QEMU_VERSION, 8); /* firmware version */
380 padstr((uint8_t *)(p + 27), "QEMU HARDDISK", 40); /* model */
381 #if MAX_MULT_SECTORS > 1
382 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
384 put_le16(p + 48, 1); /* dword I/O */
385 put_le16(p + 49, 1 << 9); /* LBA supported, no DMA */
386 put_le16(p + 51, 0x200); /* PIO transfer cycle */
387 put_le16(p + 52, 0x200); /* DMA transfer cycle */
388 put_le16(p + 53, 1); /* words 54-58 are valid */
389 put_le16(p + 54, s->cylinders);
390 put_le16(p + 55, s->heads);
391 put_le16(p + 56, s->sectors);
392 oldsize = s->cylinders * s->heads * s->sectors;
393 put_le16(p + 57, oldsize);
394 put_le16(p + 58, oldsize >> 16);
396 put_le16(p + 59, 0x100 | s->mult_sectors);
397 put_le16(p + 60, s->nb_sectors);
398 put_le16(p + 61, s->nb_sectors >> 16);
399 put_le16(p + 80, (1 << 1) | (1 << 2));
400 put_le16(p + 82, (1 << 14));
401 put_le16(p + 83, (1 << 14));
402 put_le16(p + 84, (1 << 14));
403 put_le16(p + 85, (1 << 14));
405 put_le16(p + 87, (1 << 14));
408 static void ide_atapi_identify(IDEState *s)
412 memset(s->io_buffer, 0, 512);
413 p = (uint16_t *)s->io_buffer;
414 /* Removable CDROM, 50us response, 12 byte packets */
415 put_le16(p + 0, (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0));
416 put_le16(p + 1, s->cylinders);
417 put_le16(p + 3, s->heads);
418 put_le16(p + 4, 512 * s->sectors); /* sectors */
419 put_le16(p + 5, 512); /* sector size */
420 put_le16(p + 6, s->sectors);
421 padstr((uint8_t *)(p + 10), "QM00001", 20); /* serial number */
422 put_le16(p + 20, 3); /* buffer type */
423 put_le16(p + 21, 512); /* cache size in sectors */
424 put_le16(p + 22, 4); /* ecc bytes */
425 padstr((uint8_t *)(p + 23), QEMU_VERSION, 8); /* firmware version */
426 padstr((uint8_t *)(p + 27), "QEMU CD-ROM", 40); /* model */
427 put_le16(p + 48, 1); /* dword I/O (XXX: should not be set on CDROM) */
428 put_le16(p + 49, 1 << 9); /* LBA supported, no DMA */
429 put_le16(p + 53, 3); /* words 64-70, 54-58 valid */
430 put_le16(p + 63, 0x103); /* DMA modes XXX: may be incorrect */
431 put_le16(p + 64, 1); /* PIO modes */
432 put_le16(p + 65, 0xb4); /* minimum DMA multiword tx cycle time */
433 put_le16(p + 66, 0xb4); /* recommended DMA multiword tx cycle time */
434 put_le16(p + 67, 0x12c); /* minimum PIO cycle time without flow control */
435 put_le16(p + 68, 0xb4); /* minimum PIO cycle time with IORDY flow control */
437 put_le16(p + 71, 30); /* in ns */
438 put_le16(p + 72, 30); /* in ns */
440 put_le16(p + 80, 0x1e); /* support up to ATA/ATAPI-4 */
443 static void ide_set_signature(IDEState *s)
445 s->select &= 0xf0; /* clear head */
461 static inline void ide_abort_command(IDEState *s)
463 s->status = READY_STAT | ERR_STAT;
467 static inline void ide_set_irq(IDEState *s)
469 if (!(s->cmd & IDE_CMD_DISABLE_IRQ)) {
470 pic_set_irq(s->irq, 1);
474 /* prepare data transfer and tell what to do after */
475 static void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
476 EndTransferFunc *end_transfer_func)
478 s->end_transfer_func = end_transfer_func;
480 s->data_end = buf + size;
481 s->status |= DRQ_STAT;
484 static void ide_transfer_stop(IDEState *s)
486 s->end_transfer_func = ide_transfer_stop;
487 s->data_ptr = s->io_buffer;
488 s->data_end = s->io_buffer;
489 s->status &= ~DRQ_STAT;
492 static int64_t ide_get_sector(IDEState *s)
495 if (s->select & 0x40) {
497 sector_num = ((s->select & 0x0f) << 24) | (s->hcyl << 16) |
498 (s->lcyl << 8) | s->sector;
500 sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
501 (s->select & 0x0f) * s->sectors +
507 static void ide_set_sector(IDEState *s, int64_t sector_num)
510 if (s->select & 0x40) {
511 s->select = (s->select & 0xf0) | (sector_num >> 24);
512 s->hcyl = (sector_num >> 16);
513 s->lcyl = (sector_num >> 8);
514 s->sector = (sector_num);
516 cyl = sector_num / (s->heads * s->sectors);
517 r = sector_num % (s->heads * s->sectors);
520 s->select = (s->select & 0xf0) | (r / s->sectors);
521 s->sector = (r % s->sectors) + 1;
525 static void ide_sector_read(IDEState *s)
530 s->status = READY_STAT | SEEK_STAT;
531 s->error = 0; /* not needed by IDE spec, but needed by Windows */
532 sector_num = ide_get_sector(s);
535 /* no more sector to read from disk */
536 ide_transfer_stop(s);
538 #if defined(DEBUG_IDE)
539 printf("read sector=%Ld\n", sector_num);
541 if (n > s->req_nb_sectors)
542 n = s->req_nb_sectors;
543 ret = bdrv_read(s->bs, sector_num, s->io_buffer, n);
544 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_read);
546 ide_set_sector(s, sector_num + n);
551 static void ide_sector_write(IDEState *s)
556 s->status = READY_STAT | SEEK_STAT;
557 sector_num = ide_get_sector(s);
558 #if defined(DEBUG_IDE)
559 printf("write sector=%Ld\n", sector_num);
562 if (n > s->req_nb_sectors)
563 n = s->req_nb_sectors;
564 ret = bdrv_write(s->bs, sector_num, s->io_buffer, n);
566 if (s->nsector == 0) {
567 /* no more sector to write */
568 ide_transfer_stop(s);
571 if (n1 > s->req_nb_sectors)
572 n1 = s->req_nb_sectors;
573 ide_transfer_start(s, s->io_buffer, 512 * n1, ide_sector_write);
575 ide_set_sector(s, sector_num + n);
579 static void ide_atapi_cmd_ok(IDEState *s)
582 s->status = READY_STAT;
583 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
587 static void ide_atapi_cmd_error(IDEState *s, int sense_key, int asc)
589 #ifdef DEBUG_IDE_ATAPI
590 printf("atapi_cmd_error: sense=0x%x asc=0x%x\n", sense_key, asc);
592 s->error = sense_key << 4;
593 s->status = READY_STAT | ERR_STAT;
594 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
595 s->sense_key = sense_key;
600 static inline void cpu_to_ube16(uint8_t *buf, int val)
606 static inline void cpu_to_ube32(uint8_t *buf, unsigned int val)
614 static inline int ube16_to_cpu(const uint8_t *buf)
616 return (buf[0] << 8) | buf[1];
619 static inline int ube32_to_cpu(const uint8_t *buf)
621 return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
624 /* The whole ATAPI transfer logic is handled in this function */
625 static void ide_atapi_cmd_reply_end(IDEState *s)
627 int byte_count_limit, size;
628 #ifdef DEBUG_IDE_ATAPI
629 printf("reply: tx_size=%d elem_tx_size=%d index=%d\n",
630 s->packet_transfer_size,
631 s->elementary_transfer_size,
634 if (s->packet_transfer_size <= 0) {
635 /* end of transfer */
636 ide_transfer_stop(s);
637 s->status = READY_STAT;
638 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO | ATAPI_INT_REASON_CD;
640 #ifdef DEBUG_IDE_ATAPI
641 printf("status=0x%x\n", s->status);
644 /* see if a new sector must be read */
645 if (s->lba != -1 && s->io_buffer_index >= 2048) {
646 bdrv_read(s->bs, (int64_t)s->lba << 2, s->io_buffer, 4);
648 s->io_buffer_index = 0;
650 if (s->elementary_transfer_size > 0) {
651 /* there are some data left to transmit in this elementary
653 size = 2048 - s->io_buffer_index;
654 if (size > s->elementary_transfer_size)
655 size = s->elementary_transfer_size;
656 ide_transfer_start(s, s->io_buffer + s->io_buffer_index,
657 size, ide_atapi_cmd_reply_end);
658 s->packet_transfer_size -= size;
659 s->elementary_transfer_size -= size;
660 s->io_buffer_index += size;
662 /* a new transfer is needed */
663 s->nsector = (s->nsector & ~7) | ATAPI_INT_REASON_IO;
664 byte_count_limit = s->lcyl | (s->hcyl << 8);
665 #ifdef DEBUG_IDE_ATAPI
666 printf("byte_count_limit=%d\n", byte_count_limit);
668 if (byte_count_limit == 0xffff)
670 size = s->packet_transfer_size;
671 if (size > byte_count_limit) {
672 /* byte count limit must be even if this case */
673 if (byte_count_limit & 1)
675 size = byte_count_limit;
679 s->elementary_transfer_size = size;
680 /* we cannot transmit more than one sector at a time */
682 if (size > (2048 - s->io_buffer_index))
683 size = (2048 - s->io_buffer_index);
685 ide_transfer_start(s, s->io_buffer + s->io_buffer_index,
686 size, ide_atapi_cmd_reply_end);
687 s->packet_transfer_size -= size;
688 s->elementary_transfer_size -= size;
689 s->io_buffer_index += size;
691 #ifdef DEBUG_IDE_ATAPI
692 printf("status=0x%x\n", s->status);
698 /* send a reply of 'size' bytes in s->io_buffer to an ATAPI command */
699 static void ide_atapi_cmd_reply(IDEState *s, int size, int max_size)
703 s->lba = -1; /* no sector read */
704 s->packet_transfer_size = size;
705 s->elementary_transfer_size = 0;
706 s->io_buffer_index = 0;
708 s->status = READY_STAT;
709 ide_atapi_cmd_reply_end(s);
712 /* start a CD-CDROM read command */
713 static void ide_atapi_cmd_read(IDEState *s, int lba, int nb_sectors)
715 #ifdef DEBUG_IDE_ATAPI
716 printf("read: LBA=%d nb_sectors=%d\n", lba, nb_sectors);
719 s->packet_transfer_size = nb_sectors * 2048;
720 s->elementary_transfer_size = 0;
721 s->io_buffer_index = 2048;
723 s->status = READY_STAT;
724 ide_atapi_cmd_reply_end(s);
727 /* same toc as bochs. Return -1 if error or the toc length */
728 static int cdrom_read_toc(IDEState *s, uint8_t *buf, int msf, int start_track)
733 if (start_track > 1 && start_track != 0xaa)
738 if (start_track <= 1) {
739 *q++ = 0; /* reserved */
740 *q++ = 0x14; /* ADR, control */
741 *q++ = 1; /* track number */
742 *q++ = 0; /* reserved */
744 *q++ = 0; /* reserved */
745 *q++ = 0; /* minute */
746 *q++ = 2; /* second */
747 *q++ = 0; /* frame */
755 *q++ = 0; /* reserved */
756 *q++ = 0x16; /* ADR, control */
757 *q++ = 0xaa; /* track number */
758 *q++ = 0; /* reserved */
759 nb_sectors = s->nb_sectors >> 2;
761 *q++ = 0; /* reserved */
762 *q++ = ((nb_sectors + 150) / 75) / 60;
763 *q++ = ((nb_sectors + 150) / 75) % 60;
764 *q++ = (nb_sectors + 150) % 75;
766 cpu_to_ube32(q, nb_sectors);
770 cpu_to_ube16(buf, len - 2);
774 static void ide_atapi_cmd(IDEState *s)
776 const uint8_t *packet;
780 packet = s->io_buffer;
782 #ifdef DEBUG_IDE_ATAPI
785 printf("ATAPI limit=0x%x packet:", s->lcyl | (s->hcyl << 8));
786 for(i = 0; i < ATAPI_PACKET_SIZE; i++) {
787 printf(" %02x", packet[i]);
792 switch(s->io_buffer[0]) {
793 case GPCMD_TEST_UNIT_READY:
794 if (bdrv_is_inserted(s->bs)) {
797 ide_atapi_cmd_error(s, SENSE_NOT_READY,
798 ASC_MEDIUM_NOT_PRESENT);
801 case GPCMD_MODE_SENSE_10:
804 max_len = ube16_to_cpu(packet + 7);
805 action = packet[2] >> 6;
806 code = packet[2] & 0x3f;
808 case 0: /* current values */
810 case 0x01: /* error recovery */
811 cpu_to_ube16(&buf[0], 16 + 6);
827 ide_atapi_cmd_reply(s, 16, max_len);
830 cpu_to_ube16(&buf[0], 28 + 6);
845 buf[14] = (1 << 0) | (1 << 3) | (1 << 5);
846 if (bdrv_is_locked(s->bs))
849 cpu_to_ube16(&buf[16], 706);
852 cpu_to_ube16(&buf[20], 512);
853 cpu_to_ube16(&buf[22], 706);
858 ide_atapi_cmd_reply(s, 28, max_len);
864 case 1: /* changeable values */
866 case 2: /* default values */
869 case 3: /* saved values */
870 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
871 ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
876 case GPCMD_REQUEST_SENSE:
879 buf[0] = 0x70 | (1 << 7);
880 buf[2] = s->sense_key;
883 ide_atapi_cmd_reply(s, 18, max_len);
885 case GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
886 if (bdrv_is_inserted(s->bs)) {
887 bdrv_set_locked(s->bs, packet[4] & 1);
890 ide_atapi_cmd_error(s, SENSE_NOT_READY,
891 ASC_MEDIUM_NOT_PRESENT);
899 if (!bdrv_is_inserted(s->bs)) {
900 ide_atapi_cmd_error(s, SENSE_NOT_READY,
901 ASC_MEDIUM_NOT_PRESENT);
904 if (packet[0] == GPCMD_READ_10)
905 nb_sectors = ube16_to_cpu(packet + 7);
907 nb_sectors = ube32_to_cpu(packet + 6);
908 lba = ube32_to_cpu(packet + 2);
909 if (nb_sectors == 0) {
913 if (((int64_t)(lba + nb_sectors) << 2) > s->nb_sectors) {
914 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
915 ASC_LOGICAL_BLOCK_OOR);
918 ide_atapi_cmd_read(s, lba, nb_sectors);
924 if (!bdrv_is_inserted(s->bs)) {
925 ide_atapi_cmd_error(s, SENSE_NOT_READY,
926 ASC_MEDIUM_NOT_PRESENT);
929 lba = ube32_to_cpu(packet + 2);
930 if (((int64_t)lba << 2) > s->nb_sectors) {
931 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
932 ASC_LOGICAL_BLOCK_OOR);
938 case GPCMD_START_STOP_UNIT:
941 start = packet[4] & 1;
942 eject = (packet[4] >> 1) & 1;
944 if (eject && !start) {
951 case GPCMD_MECHANISM_STATUS:
953 max_len = ube16_to_cpu(packet + 8);
954 cpu_to_ube16(buf, 0);
960 cpu_to_ube16(buf + 6, 0);
961 ide_atapi_cmd_reply(s, 8, max_len);
964 case GPCMD_READ_TOC_PMA_ATIP:
966 int format, msf, start_track, len;
968 if (!bdrv_is_inserted(s->bs)) {
969 ide_atapi_cmd_error(s, SENSE_NOT_READY,
970 ASC_MEDIUM_NOT_PRESENT);
973 max_len = ube16_to_cpu(packet + 7);
974 format = packet[9] >> 6;
975 msf = (packet[1] >> 1) & 1;
976 start_track = packet[6];
979 len = cdrom_read_toc(s, buf, msf, start_track);
982 ide_atapi_cmd_reply(s, len, max_len);
985 /* multi session : only a single session defined */
990 ide_atapi_cmd_reply(s, 12, max_len);
994 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
995 ASC_INV_FIELD_IN_CMD_PACKET);
1000 case GPCMD_READ_CDVD_CAPACITY:
1001 if (!bdrv_is_inserted(s->bs)) {
1002 ide_atapi_cmd_error(s, SENSE_NOT_READY,
1003 ASC_MEDIUM_NOT_PRESENT);
1006 /* NOTE: it is really the number of sectors minus 1 */
1007 cpu_to_ube32(buf, (s->nb_sectors >> 2) - 1);
1008 cpu_to_ube32(buf + 4, 2048);
1009 ide_atapi_cmd_reply(s, 8, 8);
1012 max_len = packet[4];
1013 buf[0] = 0x05; /* CD-ROM */
1014 buf[1] = 0x80; /* removable */
1015 buf[2] = 0x00; /* ISO */
1016 buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
1017 buf[4] = 31; /* additionnal length */
1018 buf[5] = 0; /* reserved */
1019 buf[6] = 0; /* reserved */
1020 buf[7] = 0; /* reserved */
1021 padstr8(buf + 8, 8, "QEMU");
1022 padstr8(buf + 16, 16, "QEMU CD-ROM");
1023 padstr8(buf + 32, 4, QEMU_VERSION);
1024 ide_atapi_cmd_reply(s, 36, max_len);
1027 ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
1028 ASC_ILLEGAL_OPCODE);
1033 /* called when the inserted state of the media has changed */
1034 static void cdrom_change_cb(void *opaque)
1036 IDEState *s = opaque;
1039 /* XXX: send interrupt too */
1040 bdrv_get_geometry(s->bs, &nb_sectors);
1041 s->nb_sectors = nb_sectors;
1044 static void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
1046 IDEState *ide_if = opaque;
1051 printf("IDE: write addr=0x%x val=0x%02x\n", addr, val);
1058 /* NOTE: data is written to the two drives */
1059 ide_if[0].feature = val;
1060 ide_if[1].feature = val;
1065 ide_if[0].nsector = val;
1066 ide_if[1].nsector = val;
1069 ide_if[0].sector = val;
1070 ide_if[1].sector = val;
1073 ide_if[0].lcyl = val;
1074 ide_if[1].lcyl = val;
1077 ide_if[0].hcyl = val;
1078 ide_if[1].hcyl = val;
1081 ide_if[0].select = val & 0x4f;
1082 ide_if[1].select = val & 0x4f;
1084 unit = (val >> 4) & 1;
1086 ide_if->cur_drive = s;
1091 #if defined(DEBUG_IDE)
1092 printf("ide: CMD=%02x\n", val);
1094 s = ide_if->cur_drive;
1097 if (s->bs && !s->is_cdrom) {
1099 s->status = READY_STAT;
1100 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1103 ide_set_signature(s);
1105 ide_abort_command(s);
1112 s->status = READY_STAT;
1116 if (s->nsector > MAX_MULT_SECTORS ||
1118 (s->nsector & (s->nsector - 1)) != 0) {
1119 ide_abort_command(s);
1121 s->mult_sectors = s->nsector;
1122 s->status = READY_STAT;
1127 case WIN_VERIFY_ONCE:
1128 /* do sector number check ? */
1129 s->status = READY_STAT;
1136 s->req_nb_sectors = 1;
1140 case WIN_WRITE_ONCE:
1142 s->status = SEEK_STAT;
1143 s->req_nb_sectors = 1;
1144 ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
1147 if (!s->mult_sectors)
1149 s->req_nb_sectors = s->mult_sectors;
1153 if (!s->mult_sectors)
1156 s->status = SEEK_STAT;
1157 s->req_nb_sectors = s->mult_sectors;
1159 if (n > s->req_nb_sectors)
1160 n = s->req_nb_sectors;
1161 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
1163 case WIN_READ_NATIVE_MAX:
1164 ide_set_sector(s, s->nb_sectors - 1);
1165 s->status = READY_STAT;
1168 case WIN_CHECKPOWERMODE1:
1169 s->nsector = 0xff; /* device active or idle */
1170 s->status = READY_STAT;
1174 /* ATAPI commands */
1177 ide_atapi_identify(s);
1178 s->status = READY_STAT;
1179 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1181 ide_abort_command(s);
1188 ide_set_signature(s);
1189 s->status = 0x00; /* NOTE: READY is _not_ set */
1195 /* DMA or overlapping commands not supported */
1196 if ((s->feature & 0x03) != 0)
1199 ide_transfer_start(s, s->io_buffer, ATAPI_PACKET_SIZE,
1204 ide_abort_command(s);
1211 static uint32_t ide_ioport_read(void *opaque, uint32_t addr1)
1213 IDEState *s = ((IDEState *)opaque)->cur_drive;
1232 ret = s->nsector & 0xff;
1256 ret = s->select | 0xa0;
1264 pic_set_irq(s->irq, 0);
1268 printf("ide: read addr=0x%x val=%02x\n", addr1, ret);
1273 static uint32_t ide_status_read(void *opaque, uint32_t addr)
1275 IDEState *s = ((IDEState *)opaque)->cur_drive;
1279 printf("ide: read status addr=0x%x val=%02x\n", addr, ret);
1284 static void ide_cmd_write(void *opaque, uint32_t addr, uint32_t val)
1286 IDEState *ide_if = opaque;
1291 printf("ide: write control addr=0x%x val=%02x\n", addr, val);
1293 /* common for both drives */
1294 if (!(ide_if[0].cmd & IDE_CMD_RESET) &&
1295 (val & IDE_CMD_RESET)) {
1296 /* reset low to high */
1297 for(i = 0;i < 2; i++) {
1299 s->status = BUSY_STAT | SEEK_STAT;
1302 } else if ((ide_if[0].cmd & IDE_CMD_RESET) &&
1303 !(val & IDE_CMD_RESET)) {
1305 for(i = 0;i < 2; i++) {
1308 s->status = 0x00; /* NOTE: READY is _not_ set */
1310 s->status = READY_STAT | SEEK_STAT;
1311 ide_set_signature(s);
1315 ide_if[0].cmd = val;
1316 ide_if[1].cmd = val;
1319 static void ide_data_writew(void *opaque, uint32_t addr, uint32_t val)
1321 IDEState *s = ((IDEState *)opaque)->cur_drive;
1325 *(uint16_t *)p = tswap16(val);
1328 if (p >= s->data_end)
1329 s->end_transfer_func(s);
1332 static uint32_t ide_data_readw(void *opaque, uint32_t addr)
1334 IDEState *s = ((IDEState *)opaque)->cur_drive;
1338 ret = tswap16(*(uint16_t *)p);
1341 if (p >= s->data_end)
1342 s->end_transfer_func(s);
1346 static void ide_data_writel(void *opaque, uint32_t addr, uint32_t val)
1348 IDEState *s = ((IDEState *)opaque)->cur_drive;
1352 *(uint32_t *)p = tswap32(val);
1355 if (p >= s->data_end)
1356 s->end_transfer_func(s);
1359 static uint32_t ide_data_readl(void *opaque, uint32_t addr)
1361 IDEState *s = ((IDEState *)opaque)->cur_drive;
1366 ret = tswap32(*(uint32_t *)p);
1369 if (p >= s->data_end)
1370 s->end_transfer_func(s);
1374 static void ide_reset(IDEState *s)
1376 s->mult_sectors = MAX_MULT_SECTORS;
1379 s->status = READY_STAT;
1380 ide_set_signature(s);
1384 uint8_t boot_ind; /* 0x80 - active */
1385 uint8_t head; /* starting head */
1386 uint8_t sector; /* starting sector */
1387 uint8_t cyl; /* starting cylinder */
1388 uint8_t sys_ind; /* What partition type */
1389 uint8_t end_head; /* end head */
1390 uint8_t end_sector; /* end sector */
1391 uint8_t end_cyl; /* end cylinder */
1392 uint32_t start_sect; /* starting sector counting from 0 */
1393 uint32_t nr_sects; /* nr of sectors in partition */
1394 } __attribute__((packed));
1396 /* try to guess the IDE geometry from the MSDOS partition table */
1397 static void ide_guess_geometry(IDEState *s)
1401 struct partition *p;
1404 if (s->cylinders != 0)
1406 ret = bdrv_read(s->bs, 0, buf, 1);
1409 /* test msdos magic */
1410 if (buf[510] != 0x55 || buf[511] != 0xaa)
1412 for(i = 0; i < 4; i++) {
1413 p = ((struct partition *)(buf + 0x1be)) + i;
1414 nr_sects = tswap32(p->nr_sects);
1415 if (nr_sects && p->end_head) {
1416 /* We make the assumption that the partition terminates on
1417 a cylinder boundary */
1418 s->heads = p->end_head + 1;
1419 s->sectors = p->end_sector & 63;
1420 s->cylinders = s->nb_sectors / (s->heads * s->sectors);
1422 printf("guessed partition: CHS=%d %d %d\n",
1423 s->cylinders, s->heads, s->sectors);
1429 void ide_init(int iobase, int iobase2, int irq,
1430 BlockDriverState *hd0, BlockDriverState *hd1)
1432 IDEState *s, *ide_state;
1433 int i, cylinders, heads, secs;
1436 ide_state = qemu_mallocz(sizeof(IDEState) * 2);
1440 for(i = 0; i < 2; i++) {
1447 bdrv_get_geometry(s->bs, &nb_sectors);
1448 s->nb_sectors = nb_sectors;
1449 /* if a geometry hint is available, use it */
1450 bdrv_get_geometry_hint(s->bs, &cylinders, &heads, &secs);
1451 if (cylinders != 0) {
1452 s->cylinders = cylinders;
1456 ide_guess_geometry(s);
1457 if (s->cylinders == 0) {
1458 /* if no geometry, use a LBA compatible one */
1459 cylinders = nb_sectors / (16 * 63);
1460 if (cylinders > 16383)
1462 else if (cylinders < 2)
1464 s->cylinders = cylinders;
1469 if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
1471 bdrv_set_change_cb(s->bs, cdrom_change_cb, s);
1477 register_ioport_write(iobase, 8, 1, ide_ioport_write, ide_state);
1478 register_ioport_read(iobase, 8, 1, ide_ioport_read, ide_state);
1480 register_ioport_read(iobase2, 1, 1, ide_status_read, ide_state);
1481 register_ioport_write(iobase2, 1, 1, ide_cmd_write, ide_state);
1485 register_ioport_write(iobase, 2, 2, ide_data_writew, ide_state);
1486 register_ioport_read(iobase, 2, 2, ide_data_readw, ide_state);
1487 register_ioport_write(iobase, 4, 4, ide_data_writel, ide_state);
1488 register_ioport_read(iobase, 4, 4, ide_data_readl, ide_state);