2 * QEMU IDE disk and CD/DVD-ROM Emulator
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 "qemu/osdep.h"
27 #include "hw/isa/isa.h"
28 #include "migration/vmstate.h"
29 #include "qemu/error-report.h"
30 #include "qemu/main-loop.h"
31 #include "qemu/timer.h"
32 #include "sysemu/sysemu.h"
33 #include "sysemu/blockdev.h"
34 #include "sysemu/dma.h"
35 #include "hw/block/block.h"
36 #include "sysemu/block-backend.h"
37 #include "qapi/error.h"
38 #include "qemu/cutils.h"
39 #include "sysemu/replay.h"
40 #include "sysemu/runstate.h"
41 #include "hw/ide/internal.h"
44 /* These values were based on a Seagate ST3500418AS but have been modified
45 to make more sense in QEMU */
46 static const int smart_attributes[][12] = {
47 /* id, flags, hflags, val, wrst, raw (6 bytes), threshold */
48 /* raw read error rate*/
49 { 0x01, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06},
51 { 0x03, 0x03, 0x00, 0x64, 0x64, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
52 /* start stop count */
53 { 0x04, 0x02, 0x00, 0x64, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14},
54 /* remapped sectors */
55 { 0x05, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24},
57 { 0x09, 0x03, 0x00, 0x64, 0x64, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
58 /* power cycle count */
59 { 0x0c, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
60 /* airflow-temperature-celsius */
61 { 190, 0x03, 0x00, 0x45, 0x45, 0x1f, 0x00, 0x1f, 0x1f, 0x00, 0x00, 0x32},
64 const char *IDE_DMA_CMD_lookup[IDE_DMA__COUNT] = {
65 [IDE_DMA_READ] = "DMA READ",
66 [IDE_DMA_WRITE] = "DMA WRITE",
67 [IDE_DMA_TRIM] = "DMA TRIM",
68 [IDE_DMA_ATAPI] = "DMA ATAPI"
71 static const char *IDE_DMA_CMD_str(enum ide_dma_cmd enval)
73 if ((unsigned)enval < IDE_DMA__COUNT) {
74 return IDE_DMA_CMD_lookup[enval];
76 return "DMA UNKNOWN CMD";
79 static void ide_dummy_transfer_stop(IDEState *s);
81 static void padstr(char *str, const char *src, int len)
84 for(i = 0; i < len; i++) {
93 static void put_le16(uint16_t *p, unsigned int v)
98 static void ide_identify_size(IDEState *s)
100 uint16_t *p = (uint16_t *)s->identify_data;
101 put_le16(p + 60, s->nb_sectors);
102 put_le16(p + 61, s->nb_sectors >> 16);
103 put_le16(p + 100, s->nb_sectors);
104 put_le16(p + 101, s->nb_sectors >> 16);
105 put_le16(p + 102, s->nb_sectors >> 32);
106 put_le16(p + 103, s->nb_sectors >> 48);
109 static void ide_identify(IDEState *s)
112 unsigned int oldsize;
113 IDEDevice *dev = s->unit ? s->bus->slave : s->bus->master;
115 p = (uint16_t *)s->identify_data;
116 if (s->identify_set) {
119 memset(p, 0, sizeof(s->identify_data));
121 put_le16(p + 0, 0x0040);
122 put_le16(p + 1, s->cylinders);
123 put_le16(p + 3, s->heads);
124 put_le16(p + 4, 512 * s->sectors); /* XXX: retired, remove ? */
125 put_le16(p + 5, 512); /* XXX: retired, remove ? */
126 put_le16(p + 6, s->sectors);
127 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
128 put_le16(p + 20, 3); /* XXX: retired, remove ? */
129 put_le16(p + 21, 512); /* cache size in sectors */
130 put_le16(p + 22, 4); /* ecc bytes */
131 padstr((char *)(p + 23), s->version, 8); /* firmware version */
132 padstr((char *)(p + 27), s->drive_model_str, 40); /* model */
133 #if MAX_MULT_SECTORS > 1
134 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
136 put_le16(p + 48, 1); /* dword I/O */
137 put_le16(p + 49, (1 << 11) | (1 << 9) | (1 << 8)); /* DMA and LBA supported */
138 put_le16(p + 51, 0x200); /* PIO transfer cycle */
139 put_le16(p + 52, 0x200); /* DMA transfer cycle */
140 put_le16(p + 53, 1 | (1 << 1) | (1 << 2)); /* words 54-58,64-70,88 are valid */
141 put_le16(p + 54, s->cylinders);
142 put_le16(p + 55, s->heads);
143 put_le16(p + 56, s->sectors);
144 oldsize = s->cylinders * s->heads * s->sectors;
145 put_le16(p + 57, oldsize);
146 put_le16(p + 58, oldsize >> 16);
148 put_le16(p + 59, 0x100 | s->mult_sectors);
149 /* *(p + 60) := nb_sectors -- see ide_identify_size */
150 /* *(p + 61) := nb_sectors >> 16 -- see ide_identify_size */
151 put_le16(p + 62, 0x07); /* single word dma0-2 supported */
152 put_le16(p + 63, 0x07); /* mdma0-2 supported */
153 put_le16(p + 64, 0x03); /* pio3-4 supported */
154 put_le16(p + 65, 120);
155 put_le16(p + 66, 120);
156 put_le16(p + 67, 120);
157 put_le16(p + 68, 120);
158 if (dev && dev->conf.discard_granularity) {
159 put_le16(p + 69, (1 << 14)); /* determinate TRIM behavior */
163 put_le16(p + 75, s->ncq_queues - 1);
165 put_le16(p + 76, (1 << 8));
168 put_le16(p + 80, 0xf0); /* ata3 -> ata6 supported */
169 put_le16(p + 81, 0x16); /* conforms to ata5 */
170 /* 14=NOP supported, 5=WCACHE supported, 0=SMART supported */
171 put_le16(p + 82, (1 << 14) | (1 << 5) | 1);
172 /* 13=flush_cache_ext,12=flush_cache,10=lba48 */
173 put_le16(p + 83, (1 << 14) | (1 << 13) | (1 <<12) | (1 << 10));
174 /* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
176 put_le16(p + 84, (1 << 14) | (1 << 8) | 0);
178 put_le16(p + 84, (1 << 14) | 0);
180 /* 14 = NOP supported, 5=WCACHE enabled, 0=SMART feature set enabled */
181 if (blk_enable_write_cache(s->blk)) {
182 put_le16(p + 85, (1 << 14) | (1 << 5) | 1);
184 put_le16(p + 85, (1 << 14) | 1);
186 /* 13=flush_cache_ext,12=flush_cache,10=lba48 */
187 put_le16(p + 86, (1 << 13) | (1 <<12) | (1 << 10));
188 /* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
190 put_le16(p + 87, (1 << 14) | (1 << 8) | 0);
192 put_le16(p + 87, (1 << 14) | 0);
194 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
195 put_le16(p + 93, 1 | (1 << 14) | 0x2000);
196 /* *(p + 100) := nb_sectors -- see ide_identify_size */
197 /* *(p + 101) := nb_sectors >> 16 -- see ide_identify_size */
198 /* *(p + 102) := nb_sectors >> 32 -- see ide_identify_size */
199 /* *(p + 103) := nb_sectors >> 48 -- see ide_identify_size */
201 if (dev && dev->conf.physical_block_size)
202 put_le16(p + 106, 0x6000 | get_physical_block_exp(&dev->conf));
204 /* LE 16-bit words 111-108 contain 64-bit World Wide Name */
205 put_le16(p + 108, s->wwn >> 48);
206 put_le16(p + 109, s->wwn >> 32);
207 put_le16(p + 110, s->wwn >> 16);
208 put_le16(p + 111, s->wwn);
210 if (dev && dev->conf.discard_granularity) {
211 put_le16(p + 169, 1); /* TRIM support */
214 put_le16(p + 217, dev->rotation_rate); /* Nominal media rotation rate */
217 ide_identify_size(s);
221 memcpy(s->io_buffer, p, sizeof(s->identify_data));
224 static void ide_atapi_identify(IDEState *s)
228 p = (uint16_t *)s->identify_data;
229 if (s->identify_set) {
232 memset(p, 0, sizeof(s->identify_data));
234 /* Removable CDROM, 50us response, 12 byte packets */
235 put_le16(p + 0, (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0));
236 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
237 put_le16(p + 20, 3); /* buffer type */
238 put_le16(p + 21, 512); /* cache size in sectors */
239 put_le16(p + 22, 4); /* ecc bytes */
240 padstr((char *)(p + 23), s->version, 8); /* firmware version */
241 padstr((char *)(p + 27), s->drive_model_str, 40); /* model */
242 put_le16(p + 48, 1); /* dword I/O (XXX: should not be set on CDROM) */
244 put_le16(p + 49, 1 << 9 | 1 << 8); /* DMA and LBA supported */
245 put_le16(p + 53, 7); /* words 64-70, 54-58, 88 valid */
246 put_le16(p + 62, 7); /* single word dma0-2 supported */
247 put_le16(p + 63, 7); /* mdma0-2 supported */
249 put_le16(p + 49, 1 << 9); /* LBA supported, no DMA */
250 put_le16(p + 53, 3); /* words 64-70, 54-58 valid */
251 put_le16(p + 63, 0x103); /* DMA modes XXX: may be incorrect */
253 put_le16(p + 64, 3); /* pio3-4 supported */
254 put_le16(p + 65, 0xb4); /* minimum DMA multiword tx cycle time */
255 put_le16(p + 66, 0xb4); /* recommended DMA multiword tx cycle time */
256 put_le16(p + 67, 0x12c); /* minimum PIO cycle time without flow control */
257 put_le16(p + 68, 0xb4); /* minimum PIO cycle time with IORDY flow control */
259 put_le16(p + 71, 30); /* in ns */
260 put_le16(p + 72, 30); /* in ns */
263 put_le16(p + 75, s->ncq_queues - 1);
265 put_le16(p + 76, (1 << 8));
268 put_le16(p + 80, 0x1e); /* support up to ATA/ATAPI-4 */
270 put_le16(p + 84, (1 << 8)); /* supports WWN for words 108-111 */
271 put_le16(p + 87, (1 << 8)); /* WWN enabled */
275 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
279 /* LE 16-bit words 111-108 contain 64-bit World Wide Name */
280 put_le16(p + 108, s->wwn >> 48);
281 put_le16(p + 109, s->wwn >> 32);
282 put_le16(p + 110, s->wwn >> 16);
283 put_le16(p + 111, s->wwn);
289 memcpy(s->io_buffer, p, sizeof(s->identify_data));
292 static void ide_cfata_identify_size(IDEState *s)
294 uint16_t *p = (uint16_t *)s->identify_data;
295 put_le16(p + 7, s->nb_sectors >> 16); /* Sectors per card */
296 put_le16(p + 8, s->nb_sectors); /* Sectors per card */
297 put_le16(p + 60, s->nb_sectors); /* Total LBA sectors */
298 put_le16(p + 61, s->nb_sectors >> 16); /* Total LBA sectors */
301 static void ide_cfata_identify(IDEState *s)
306 p = (uint16_t *)s->identify_data;
307 if (s->identify_set) {
310 memset(p, 0, sizeof(s->identify_data));
312 cur_sec = s->cylinders * s->heads * s->sectors;
314 put_le16(p + 0, 0x848a); /* CF Storage Card signature */
315 put_le16(p + 1, s->cylinders); /* Default cylinders */
316 put_le16(p + 3, s->heads); /* Default heads */
317 put_le16(p + 6, s->sectors); /* Default sectors per track */
318 /* *(p + 7) := nb_sectors >> 16 -- see ide_cfata_identify_size */
319 /* *(p + 8) := nb_sectors -- see ide_cfata_identify_size */
320 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
321 put_le16(p + 22, 0x0004); /* ECC bytes */
322 padstr((char *) (p + 23), s->version, 8); /* Firmware Revision */
323 padstr((char *) (p + 27), s->drive_model_str, 40);/* Model number */
324 #if MAX_MULT_SECTORS > 1
325 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
327 put_le16(p + 47, 0x0000);
329 put_le16(p + 49, 0x0f00); /* Capabilities */
330 put_le16(p + 51, 0x0002); /* PIO cycle timing mode */
331 put_le16(p + 52, 0x0001); /* DMA cycle timing mode */
332 put_le16(p + 53, 0x0003); /* Translation params valid */
333 put_le16(p + 54, s->cylinders); /* Current cylinders */
334 put_le16(p + 55, s->heads); /* Current heads */
335 put_le16(p + 56, s->sectors); /* Current sectors */
336 put_le16(p + 57, cur_sec); /* Current capacity */
337 put_le16(p + 58, cur_sec >> 16); /* Current capacity */
338 if (s->mult_sectors) /* Multiple sector setting */
339 put_le16(p + 59, 0x100 | s->mult_sectors);
340 /* *(p + 60) := nb_sectors -- see ide_cfata_identify_size */
341 /* *(p + 61) := nb_sectors >> 16 -- see ide_cfata_identify_size */
342 put_le16(p + 63, 0x0203); /* Multiword DMA capability */
343 put_le16(p + 64, 0x0001); /* Flow Control PIO support */
344 put_le16(p + 65, 0x0096); /* Min. Multiword DMA cycle */
345 put_le16(p + 66, 0x0096); /* Rec. Multiword DMA cycle */
346 put_le16(p + 68, 0x00b4); /* Min. PIO cycle time */
347 put_le16(p + 82, 0x400c); /* Command Set supported */
348 put_le16(p + 83, 0x7068); /* Command Set supported */
349 put_le16(p + 84, 0x4000); /* Features supported */
350 put_le16(p + 85, 0x000c); /* Command Set enabled */
351 put_le16(p + 86, 0x7044); /* Command Set enabled */
352 put_le16(p + 87, 0x4000); /* Features enabled */
353 put_le16(p + 91, 0x4060); /* Current APM level */
354 put_le16(p + 129, 0x0002); /* Current features option */
355 put_le16(p + 130, 0x0005); /* Reassigned sectors */
356 put_le16(p + 131, 0x0001); /* Initial power mode */
357 put_le16(p + 132, 0x0000); /* User signature */
358 put_le16(p + 160, 0x8100); /* Power requirement */
359 put_le16(p + 161, 0x8001); /* CF command set */
361 ide_cfata_identify_size(s);
365 memcpy(s->io_buffer, p, sizeof(s->identify_data));
368 static void ide_set_signature(IDEState *s)
370 s->select &= 0xf0; /* clear head */
374 if (s->drive_kind == IDE_CD) {
386 static bool ide_sect_range_ok(IDEState *s,
387 uint64_t sector, uint64_t nb_sectors)
389 uint64_t total_sectors;
391 blk_get_geometry(s->blk, &total_sectors);
392 if (sector > total_sectors || nb_sectors > total_sectors - sector) {
398 typedef struct TrimAIOCB {
408 static void trim_aio_cancel(BlockAIOCB *acb)
410 TrimAIOCB *iocb = container_of(acb, TrimAIOCB, common);
412 /* Exit the loop so ide_issue_trim_cb will not continue */
413 iocb->j = iocb->qiov->niov - 1;
414 iocb->i = (iocb->qiov->iov[iocb->j].iov_len / 8) - 1;
416 iocb->ret = -ECANCELED;
419 blk_aio_cancel_async(iocb->aiocb);
424 static const AIOCBInfo trim_aiocb_info = {
425 .aiocb_size = sizeof(TrimAIOCB),
426 .cancel_async = trim_aio_cancel,
429 static void ide_trim_bh_cb(void *opaque)
431 TrimAIOCB *iocb = opaque;
433 iocb->common.cb(iocb->common.opaque, iocb->ret);
435 qemu_bh_delete(iocb->bh);
437 qemu_aio_unref(iocb);
440 static void ide_issue_trim_cb(void *opaque, int ret)
442 TrimAIOCB *iocb = opaque;
443 IDEState *s = iocb->s;
447 block_acct_done(blk_get_stats(s->blk), &s->acct);
449 block_acct_failed(blk_get_stats(s->blk), &s->acct);
454 while (iocb->j < iocb->qiov->niov) {
456 while (++iocb->i < iocb->qiov->iov[j].iov_len / 8) {
458 uint64_t *buffer = iocb->qiov->iov[j].iov_base;
460 /* 6-byte LBA + 2-byte range per entry */
461 uint64_t entry = le64_to_cpu(buffer[i]);
462 uint64_t sector = entry & 0x0000ffffffffffffULL;
463 uint16_t count = entry >> 48;
469 if (!ide_sect_range_ok(s, sector, count)) {
470 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_UNMAP);
475 block_acct_start(blk_get_stats(s->blk), &s->acct,
476 count << BDRV_SECTOR_BITS, BLOCK_ACCT_UNMAP);
478 /* Got an entry! Submit and exit. */
479 iocb->aiocb = blk_aio_pdiscard(s->blk,
480 sector << BDRV_SECTOR_BITS,
481 count << BDRV_SECTOR_BITS,
482 ide_issue_trim_cb, opaque);
496 replay_bh_schedule_event(iocb->bh);
500 BlockAIOCB *ide_issue_trim(
501 int64_t offset, QEMUIOVector *qiov,
502 BlockCompletionFunc *cb, void *cb_opaque, void *opaque)
504 IDEState *s = opaque;
507 iocb = blk_aio_get(&trim_aiocb_info, s->blk, cb, cb_opaque);
509 iocb->bh = qemu_bh_new(ide_trim_bh_cb, iocb);
514 ide_issue_trim_cb(iocb, 0);
515 return &iocb->common;
518 void ide_abort_command(IDEState *s)
520 ide_transfer_stop(s);
521 s->status = READY_STAT | ERR_STAT;
525 static void ide_set_retry(IDEState *s)
527 s->bus->retry_unit = s->unit;
528 s->bus->retry_sector_num = ide_get_sector(s);
529 s->bus->retry_nsector = s->nsector;
532 static void ide_clear_retry(IDEState *s)
534 s->bus->retry_unit = -1;
535 s->bus->retry_sector_num = 0;
536 s->bus->retry_nsector = 0;
539 /* prepare data transfer and tell what to do after */
540 bool ide_transfer_start_norecurse(IDEState *s, uint8_t *buf, int size,
541 EndTransferFunc *end_transfer_func)
544 s->data_end = buf + size;
546 if (!(s->status & ERR_STAT)) {
547 s->status |= DRQ_STAT;
549 if (!s->bus->dma->ops->pio_transfer) {
550 s->end_transfer_func = end_transfer_func;
553 s->bus->dma->ops->pio_transfer(s->bus->dma);
557 void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
558 EndTransferFunc *end_transfer_func)
560 if (ide_transfer_start_norecurse(s, buf, size, end_transfer_func)) {
561 end_transfer_func(s);
565 static void ide_cmd_done(IDEState *s)
567 if (s->bus->dma->ops->cmd_done) {
568 s->bus->dma->ops->cmd_done(s->bus->dma);
572 static void ide_transfer_halt(IDEState *s)
574 s->end_transfer_func = ide_transfer_stop;
575 s->data_ptr = s->io_buffer;
576 s->data_end = s->io_buffer;
577 s->status &= ~DRQ_STAT;
580 void ide_transfer_stop(IDEState *s)
582 ide_transfer_halt(s);
586 int64_t ide_get_sector(IDEState *s)
589 if (s->select & 0x40) {
592 sector_num = ((s->select & 0x0f) << 24) | (s->hcyl << 16) |
593 (s->lcyl << 8) | s->sector;
595 sector_num = ((int64_t)s->hob_hcyl << 40) |
596 ((int64_t) s->hob_lcyl << 32) |
597 ((int64_t) s->hob_sector << 24) |
598 ((int64_t) s->hcyl << 16) |
599 ((int64_t) s->lcyl << 8) | s->sector;
602 sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
603 (s->select & 0x0f) * s->sectors + (s->sector - 1);
608 void ide_set_sector(IDEState *s, int64_t sector_num)
611 if (s->select & 0x40) {
613 s->select = (s->select & 0xf0) | (sector_num >> 24);
614 s->hcyl = (sector_num >> 16);
615 s->lcyl = (sector_num >> 8);
616 s->sector = (sector_num);
618 s->sector = sector_num;
619 s->lcyl = sector_num >> 8;
620 s->hcyl = sector_num >> 16;
621 s->hob_sector = sector_num >> 24;
622 s->hob_lcyl = sector_num >> 32;
623 s->hob_hcyl = sector_num >> 40;
626 cyl = sector_num / (s->heads * s->sectors);
627 r = sector_num % (s->heads * s->sectors);
630 s->select = (s->select & 0xf0) | ((r / s->sectors) & 0x0f);
631 s->sector = (r % s->sectors) + 1;
635 static void ide_rw_error(IDEState *s) {
636 ide_abort_command(s);
640 static void ide_buffered_readv_cb(void *opaque, int ret)
642 IDEBufferedRequest *req = opaque;
643 if (!req->orphaned) {
645 assert(req->qiov.size == req->original_qiov->size);
646 qemu_iovec_from_buf(req->original_qiov, 0,
647 req->qiov.local_iov.iov_base,
648 req->original_qiov->size);
650 req->original_cb(req->original_opaque, ret);
652 QLIST_REMOVE(req, list);
653 qemu_vfree(qemu_iovec_buf(&req->qiov));
657 #define MAX_BUFFERED_REQS 16
659 BlockAIOCB *ide_buffered_readv(IDEState *s, int64_t sector_num,
660 QEMUIOVector *iov, int nb_sectors,
661 BlockCompletionFunc *cb, void *opaque)
664 IDEBufferedRequest *req;
667 QLIST_FOREACH(req, &s->buffered_requests, list) {
670 if (c > MAX_BUFFERED_REQS) {
671 return blk_abort_aio_request(s->blk, cb, opaque, -EIO);
674 req = g_new0(IDEBufferedRequest, 1);
675 req->original_qiov = iov;
676 req->original_cb = cb;
677 req->original_opaque = opaque;
678 qemu_iovec_init_buf(&req->qiov, blk_blockalign(s->blk, iov->size),
681 aioreq = blk_aio_preadv(s->blk, sector_num << BDRV_SECTOR_BITS,
682 &req->qiov, 0, ide_buffered_readv_cb, req);
684 QLIST_INSERT_HEAD(&s->buffered_requests, req, list);
689 * Cancel all pending DMA requests.
690 * Any buffered DMA requests are instantly canceled,
691 * but any pending unbuffered DMA requests must be waited on.
693 void ide_cancel_dma_sync(IDEState *s)
695 IDEBufferedRequest *req;
697 /* First invoke the callbacks of all buffered requests
698 * and flag those requests as orphaned. Ideally there
699 * are no unbuffered (Scatter Gather DMA Requests or
700 * write requests) pending and we can avoid to drain. */
701 QLIST_FOREACH(req, &s->buffered_requests, list) {
702 if (!req->orphaned) {
703 trace_ide_cancel_dma_sync_buffered(req->original_cb, req);
704 req->original_cb(req->original_opaque, -ECANCELED);
706 req->orphaned = true;
710 * We can't cancel Scatter Gather DMA in the middle of the
711 * operation or a partial (not full) DMA transfer would reach
712 * the storage so we wait for completion instead (we beahve
713 * like if the DMA was completed by the time the guest trying
714 * to cancel dma with bmdma_cmd_writeb with BM_CMD_START not
717 * In the future we'll be able to safely cancel the I/O if the
718 * whole DMA operation will be submitted to disk with a single
719 * aio operation with preadv/pwritev.
721 if (s->bus->dma->aiocb) {
722 trace_ide_cancel_dma_sync_remaining();
724 assert(s->bus->dma->aiocb == NULL);
728 static void ide_sector_read(IDEState *s);
730 static void ide_sector_read_cb(void *opaque, int ret)
732 IDEState *s = opaque;
736 s->status &= ~BUSY_STAT;
739 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO |
745 block_acct_done(blk_get_stats(s->blk), &s->acct);
748 if (n > s->req_nb_sectors) {
749 n = s->req_nb_sectors;
752 ide_set_sector(s, ide_get_sector(s) + n);
754 /* Allow the guest to read the io_buffer */
755 ide_transfer_start(s, s->io_buffer, n * BDRV_SECTOR_SIZE, ide_sector_read);
759 static void ide_sector_read(IDEState *s)
764 s->status = READY_STAT | SEEK_STAT;
765 s->error = 0; /* not needed by IDE spec, but needed by Windows */
766 sector_num = ide_get_sector(s);
770 ide_transfer_stop(s);
774 s->status |= BUSY_STAT;
776 if (n > s->req_nb_sectors) {
777 n = s->req_nb_sectors;
780 trace_ide_sector_read(sector_num, n);
782 if (!ide_sect_range_ok(s, sector_num, n)) {
784 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_READ);
788 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
790 block_acct_start(blk_get_stats(s->blk), &s->acct,
791 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
792 s->pio_aiocb = ide_buffered_readv(s, sector_num, &s->qiov, n,
793 ide_sector_read_cb, s);
796 void dma_buf_commit(IDEState *s, uint32_t tx_bytes)
798 if (s->bus->dma->ops->commit_buf) {
799 s->bus->dma->ops->commit_buf(s->bus->dma, tx_bytes);
801 s->io_buffer_offset += tx_bytes;
802 qemu_sglist_destroy(&s->sg);
805 void ide_set_inactive(IDEState *s, bool more)
807 s->bus->dma->aiocb = NULL;
809 if (s->bus->dma->ops->set_inactive) {
810 s->bus->dma->ops->set_inactive(s->bus->dma, more);
815 void ide_dma_error(IDEState *s)
817 dma_buf_commit(s, 0);
818 ide_abort_command(s);
819 ide_set_inactive(s, false);
823 int ide_handle_rw_error(IDEState *s, int error, int op)
825 bool is_read = (op & IDE_RETRY_READ) != 0;
826 BlockErrorAction action = blk_get_error_action(s->blk, is_read, error);
828 if (action == BLOCK_ERROR_ACTION_STOP) {
829 assert(s->bus->retry_unit == s->unit);
830 s->bus->error_status = op;
831 } else if (action == BLOCK_ERROR_ACTION_REPORT) {
832 block_acct_failed(blk_get_stats(s->blk), &s->acct);
833 if (IS_IDE_RETRY_DMA(op)) {
835 } else if (IS_IDE_RETRY_ATAPI(op)) {
836 ide_atapi_io_error(s, -error);
841 blk_error_action(s->blk, action, is_read, error);
842 return action != BLOCK_ERROR_ACTION_IGNORE;
845 static void ide_dma_cb(void *opaque, int ret)
847 IDEState *s = opaque;
851 bool stay_active = false;
853 if (ret == -EINVAL) {
859 if (ide_handle_rw_error(s, -ret, ide_dma_cmd_to_retry(s->dma_cmd))) {
860 s->bus->dma->aiocb = NULL;
861 dma_buf_commit(s, 0);
866 n = s->io_buffer_size >> 9;
867 if (n > s->nsector) {
868 /* The PRDs were longer than needed for this request. Shorten them so
869 * we don't get a negative remainder. The Active bit must remain set
870 * after the request completes. */
875 sector_num = ide_get_sector(s);
877 assert(n * 512 == s->sg.size);
878 dma_buf_commit(s, s->sg.size);
880 ide_set_sector(s, sector_num);
884 /* end of transfer ? */
885 if (s->nsector == 0) {
886 s->status = READY_STAT | SEEK_STAT;
891 /* launch next transfer */
893 s->io_buffer_index = 0;
894 s->io_buffer_size = n * 512;
895 if (s->bus->dma->ops->prepare_buf(s->bus->dma, s->io_buffer_size) < 512) {
896 /* The PRDs were too short. Reset the Active bit, but don't raise an
898 s->status = READY_STAT | SEEK_STAT;
899 dma_buf_commit(s, 0);
903 trace_ide_dma_cb(s, sector_num, n, IDE_DMA_CMD_str(s->dma_cmd));
905 if ((s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) &&
906 !ide_sect_range_ok(s, sector_num, n)) {
908 block_acct_invalid(blk_get_stats(s->blk), s->acct.type);
912 offset = sector_num << BDRV_SECTOR_BITS;
913 switch (s->dma_cmd) {
915 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset,
916 BDRV_SECTOR_SIZE, ide_dma_cb, s);
919 s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset,
920 BDRV_SECTOR_SIZE, ide_dma_cb, s);
923 s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk),
924 &s->sg, offset, BDRV_SECTOR_SIZE,
925 ide_issue_trim, s, ide_dma_cb, s,
926 DMA_DIRECTION_TO_DEVICE);
934 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
935 block_acct_done(blk_get_stats(s->blk), &s->acct);
937 ide_set_inactive(s, stay_active);
940 static void ide_sector_start_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
942 s->status = READY_STAT | SEEK_STAT | DRQ_STAT;
943 s->io_buffer_size = 0;
944 s->dma_cmd = dma_cmd;
948 block_acct_start(blk_get_stats(s->blk), &s->acct,
949 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
952 block_acct_start(blk_get_stats(s->blk), &s->acct,
953 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
959 ide_start_dma(s, ide_dma_cb);
962 void ide_start_dma(IDEState *s, BlockCompletionFunc *cb)
964 s->io_buffer_index = 0;
966 if (s->bus->dma->ops->start_dma) {
967 s->bus->dma->ops->start_dma(s->bus->dma, s, cb);
971 static void ide_sector_write(IDEState *s);
973 static void ide_sector_write_timer_cb(void *opaque)
975 IDEState *s = opaque;
979 static void ide_sector_write_cb(void *opaque, int ret)
981 IDEState *s = opaque;
985 s->status &= ~BUSY_STAT;
988 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO)) {
993 block_acct_done(blk_get_stats(s->blk), &s->acct);
996 if (n > s->req_nb_sectors) {
997 n = s->req_nb_sectors;
1001 ide_set_sector(s, ide_get_sector(s) + n);
1002 if (s->nsector == 0) {
1003 /* no more sectors to write */
1004 ide_transfer_stop(s);
1006 int n1 = s->nsector;
1007 if (n1 > s->req_nb_sectors) {
1008 n1 = s->req_nb_sectors;
1010 ide_transfer_start(s, s->io_buffer, n1 * BDRV_SECTOR_SIZE,
1014 if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
1015 /* It seems there is a bug in the Windows 2000 installer HDD
1016 IDE driver which fills the disk with empty logs when the
1017 IDE write IRQ comes too early. This hack tries to correct
1018 that at the expense of slower write performances. Use this
1019 option _only_ to install Windows 2000. You must disable it
1021 timer_mod(s->sector_write_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1022 (NANOSECONDS_PER_SECOND / 1000));
1024 ide_set_irq(s->bus);
1028 static void ide_sector_write(IDEState *s)
1033 s->status = READY_STAT | SEEK_STAT | BUSY_STAT;
1034 sector_num = ide_get_sector(s);
1037 if (n > s->req_nb_sectors) {
1038 n = s->req_nb_sectors;
1041 trace_ide_sector_write(sector_num, n);
1043 if (!ide_sect_range_ok(s, sector_num, n)) {
1045 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_WRITE);
1049 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
1051 block_acct_start(blk_get_stats(s->blk), &s->acct,
1052 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
1053 s->pio_aiocb = blk_aio_pwritev(s->blk, sector_num << BDRV_SECTOR_BITS,
1054 &s->qiov, 0, ide_sector_write_cb, s);
1057 static void ide_flush_cb(void *opaque, int ret)
1059 IDEState *s = opaque;
1061 s->pio_aiocb = NULL;
1064 /* XXX: What sector number to set here? */
1065 if (ide_handle_rw_error(s, -ret, IDE_RETRY_FLUSH)) {
1071 block_acct_done(blk_get_stats(s->blk), &s->acct);
1073 s->status = READY_STAT | SEEK_STAT;
1075 ide_set_irq(s->bus);
1078 static void ide_flush_cache(IDEState *s)
1080 if (s->blk == NULL) {
1085 s->status |= BUSY_STAT;
1087 block_acct_start(blk_get_stats(s->blk), &s->acct, 0, BLOCK_ACCT_FLUSH);
1088 s->pio_aiocb = blk_aio_flush(s->blk, ide_flush_cb, s);
1091 static void ide_cfata_metadata_inquiry(IDEState *s)
1096 p = (uint16_t *) s->io_buffer;
1097 memset(p, 0, 0x200);
1098 spd = ((s->mdata_size - 1) >> 9) + 1;
1100 put_le16(p + 0, 0x0001); /* Data format revision */
1101 put_le16(p + 1, 0x0000); /* Media property: silicon */
1102 put_le16(p + 2, s->media_changed); /* Media status */
1103 put_le16(p + 3, s->mdata_size & 0xffff); /* Capacity in bytes (low) */
1104 put_le16(p + 4, s->mdata_size >> 16); /* Capacity in bytes (high) */
1105 put_le16(p + 5, spd & 0xffff); /* Sectors per device (low) */
1106 put_le16(p + 6, spd >> 16); /* Sectors per device (high) */
1109 static void ide_cfata_metadata_read(IDEState *s)
1113 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1114 s->status = ERR_STAT;
1115 s->error = ABRT_ERR;
1119 p = (uint16_t *) s->io_buffer;
1120 memset(p, 0, 0x200);
1122 put_le16(p + 0, s->media_changed); /* Media status */
1123 memcpy(p + 1, s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1124 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1125 s->nsector << 9), 0x200 - 2));
1128 static void ide_cfata_metadata_write(IDEState *s)
1130 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1131 s->status = ERR_STAT;
1132 s->error = ABRT_ERR;
1136 s->media_changed = 0;
1138 memcpy(s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1140 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1141 s->nsector << 9), 0x200 - 2));
1144 /* called when the inserted state of the media has changed */
1145 static void ide_cd_change_cb(void *opaque, bool load, Error **errp)
1147 IDEState *s = opaque;
1148 uint64_t nb_sectors;
1150 s->tray_open = !load;
1151 blk_get_geometry(s->blk, &nb_sectors);
1152 s->nb_sectors = nb_sectors;
1155 * First indicate to the guest that a CD has been removed. That's
1156 * done on the next command the guest sends us.
1158 * Then we set UNIT_ATTENTION, by which the guest will
1159 * detect a new CD in the drive. See ide_atapi_cmd() for details.
1161 s->cdrom_changed = 1;
1162 s->events.new_media = true;
1163 s->events.eject_request = false;
1164 ide_set_irq(s->bus);
1167 static void ide_cd_eject_request_cb(void *opaque, bool force)
1169 IDEState *s = opaque;
1171 s->events.eject_request = true;
1173 s->tray_locked = false;
1175 ide_set_irq(s->bus);
1178 static void ide_cmd_lba48_transform(IDEState *s, int lba48)
1182 /* handle the 'magic' 0 nsector count conversion here. to avoid
1183 * fiddling with the rest of the read logic, we just store the
1184 * full sector count in ->nsector and ignore ->hob_nsector from now
1190 if (!s->nsector && !s->hob_nsector)
1193 int lo = s->nsector;
1194 int hi = s->hob_nsector;
1196 s->nsector = (hi << 8) | lo;
1201 static void ide_clear_hob(IDEBus *bus)
1203 /* any write clears HOB high bit of device control register */
1204 bus->ifs[0].select &= ~(1 << 7);
1205 bus->ifs[1].select &= ~(1 << 7);
1208 /* IOport [W]rite [R]egisters */
1209 enum ATA_IOPORT_WR {
1210 ATA_IOPORT_WR_DATA = 0,
1211 ATA_IOPORT_WR_FEATURES = 1,
1212 ATA_IOPORT_WR_SECTOR_COUNT = 2,
1213 ATA_IOPORT_WR_SECTOR_NUMBER = 3,
1214 ATA_IOPORT_WR_CYLINDER_LOW = 4,
1215 ATA_IOPORT_WR_CYLINDER_HIGH = 5,
1216 ATA_IOPORT_WR_DEVICE_HEAD = 6,
1217 ATA_IOPORT_WR_COMMAND = 7,
1218 ATA_IOPORT_WR_NUM_REGISTERS,
1221 const char *ATA_IOPORT_WR_lookup[ATA_IOPORT_WR_NUM_REGISTERS] = {
1222 [ATA_IOPORT_WR_DATA] = "Data",
1223 [ATA_IOPORT_WR_FEATURES] = "Features",
1224 [ATA_IOPORT_WR_SECTOR_COUNT] = "Sector Count",
1225 [ATA_IOPORT_WR_SECTOR_NUMBER] = "Sector Number",
1226 [ATA_IOPORT_WR_CYLINDER_LOW] = "Cylinder Low",
1227 [ATA_IOPORT_WR_CYLINDER_HIGH] = "Cylinder High",
1228 [ATA_IOPORT_WR_DEVICE_HEAD] = "Device/Head",
1229 [ATA_IOPORT_WR_COMMAND] = "Command"
1232 void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
1234 IDEBus *bus = opaque;
1235 IDEState *s = idebus_active_if(bus);
1236 int reg_num = addr & 7;
1238 trace_ide_ioport_write(addr, ATA_IOPORT_WR_lookup[reg_num], val, bus, s);
1240 /* ignore writes to command block while busy with previous command */
1241 if (reg_num != 7 && (s->status & (BUSY_STAT|DRQ_STAT))) {
1248 case ATA_IOPORT_WR_FEATURES:
1250 /* NOTE: data is written to the two drives */
1251 bus->ifs[0].hob_feature = bus->ifs[0].feature;
1252 bus->ifs[1].hob_feature = bus->ifs[1].feature;
1253 bus->ifs[0].feature = val;
1254 bus->ifs[1].feature = val;
1256 case ATA_IOPORT_WR_SECTOR_COUNT:
1258 bus->ifs[0].hob_nsector = bus->ifs[0].nsector;
1259 bus->ifs[1].hob_nsector = bus->ifs[1].nsector;
1260 bus->ifs[0].nsector = val;
1261 bus->ifs[1].nsector = val;
1263 case ATA_IOPORT_WR_SECTOR_NUMBER:
1265 bus->ifs[0].hob_sector = bus->ifs[0].sector;
1266 bus->ifs[1].hob_sector = bus->ifs[1].sector;
1267 bus->ifs[0].sector = val;
1268 bus->ifs[1].sector = val;
1270 case ATA_IOPORT_WR_CYLINDER_LOW:
1272 bus->ifs[0].hob_lcyl = bus->ifs[0].lcyl;
1273 bus->ifs[1].hob_lcyl = bus->ifs[1].lcyl;
1274 bus->ifs[0].lcyl = val;
1275 bus->ifs[1].lcyl = val;
1277 case ATA_IOPORT_WR_CYLINDER_HIGH:
1279 bus->ifs[0].hob_hcyl = bus->ifs[0].hcyl;
1280 bus->ifs[1].hob_hcyl = bus->ifs[1].hcyl;
1281 bus->ifs[0].hcyl = val;
1282 bus->ifs[1].hcyl = val;
1284 case ATA_IOPORT_WR_DEVICE_HEAD:
1285 /* FIXME: HOB readback uses bit 7 */
1286 bus->ifs[0].select = (val & ~0x10) | 0xa0;
1287 bus->ifs[1].select = (val | 0x10) | 0xa0;
1289 bus->unit = (val >> 4) & 1;
1292 case ATA_IOPORT_WR_COMMAND:
1294 ide_exec_cmd(bus, val);
1299 static void ide_reset(IDEState *s)
1304 blk_aio_cancel(s->pio_aiocb);
1305 s->pio_aiocb = NULL;
1308 if (s->drive_kind == IDE_CFATA)
1309 s->mult_sectors = 0;
1311 s->mult_sectors = MAX_MULT_SECTORS;
1328 s->status = READY_STAT | SEEK_STAT;
1332 /* ATAPI specific */
1335 s->cdrom_changed = 0;
1336 s->packet_transfer_size = 0;
1337 s->elementary_transfer_size = 0;
1338 s->io_buffer_index = 0;
1339 s->cd_sector_size = 0;
1344 s->io_buffer_size = 0;
1345 s->req_nb_sectors = 0;
1347 ide_set_signature(s);
1348 /* init the transfer handler so that 0xffff is returned on data
1350 s->end_transfer_func = ide_dummy_transfer_stop;
1351 ide_dummy_transfer_stop(s);
1352 s->media_changed = 0;
1355 static bool cmd_nop(IDEState *s, uint8_t cmd)
1360 static bool cmd_device_reset(IDEState *s, uint8_t cmd)
1362 /* Halt PIO (in the DRQ phase), then DMA */
1363 ide_transfer_halt(s);
1364 ide_cancel_dma_sync(s);
1366 /* Reset any PIO commands, reset signature, etc */
1369 /* RESET: ATA8-ACS3 7.10.4 "Normal Outputs";
1370 * ATA8-ACS3 Table 184 "Device Signatures for Normal Output" */
1373 /* Do not overwrite status register */
1377 static bool cmd_data_set_management(IDEState *s, uint8_t cmd)
1379 switch (s->feature) {
1382 ide_sector_start_dma(s, IDE_DMA_TRIM);
1388 ide_abort_command(s);
1392 static bool cmd_identify(IDEState *s, uint8_t cmd)
1394 if (s->blk && s->drive_kind != IDE_CD) {
1395 if (s->drive_kind != IDE_CFATA) {
1398 ide_cfata_identify(s);
1400 s->status = READY_STAT | SEEK_STAT;
1401 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1402 ide_set_irq(s->bus);
1405 if (s->drive_kind == IDE_CD) {
1406 ide_set_signature(s);
1408 ide_abort_command(s);
1414 static bool cmd_verify(IDEState *s, uint8_t cmd)
1416 bool lba48 = (cmd == WIN_VERIFY_EXT);
1418 /* do sector number check ? */
1419 ide_cmd_lba48_transform(s, lba48);
1424 static bool cmd_set_multiple_mode(IDEState *s, uint8_t cmd)
1426 if (s->drive_kind == IDE_CFATA && s->nsector == 0) {
1427 /* Disable Read and Write Multiple */
1428 s->mult_sectors = 0;
1429 } else if ((s->nsector & 0xff) != 0 &&
1430 ((s->nsector & 0xff) > MAX_MULT_SECTORS ||
1431 (s->nsector & (s->nsector - 1)) != 0)) {
1432 ide_abort_command(s);
1434 s->mult_sectors = s->nsector & 0xff;
1440 static bool cmd_read_multiple(IDEState *s, uint8_t cmd)
1442 bool lba48 = (cmd == WIN_MULTREAD_EXT);
1444 if (!s->blk || !s->mult_sectors) {
1445 ide_abort_command(s);
1449 ide_cmd_lba48_transform(s, lba48);
1450 s->req_nb_sectors = s->mult_sectors;
1455 static bool cmd_write_multiple(IDEState *s, uint8_t cmd)
1457 bool lba48 = (cmd == WIN_MULTWRITE_EXT);
1460 if (!s->blk || !s->mult_sectors) {
1461 ide_abort_command(s);
1465 ide_cmd_lba48_transform(s, lba48);
1467 s->req_nb_sectors = s->mult_sectors;
1468 n = MIN(s->nsector, s->req_nb_sectors);
1470 s->status = SEEK_STAT | READY_STAT;
1471 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
1473 s->media_changed = 1;
1478 static bool cmd_read_pio(IDEState *s, uint8_t cmd)
1480 bool lba48 = (cmd == WIN_READ_EXT);
1482 if (s->drive_kind == IDE_CD) {
1483 ide_set_signature(s); /* odd, but ATA4 8.27.5.2 requires it */
1484 ide_abort_command(s);
1489 ide_abort_command(s);
1493 ide_cmd_lba48_transform(s, lba48);
1494 s->req_nb_sectors = 1;
1500 static bool cmd_write_pio(IDEState *s, uint8_t cmd)
1502 bool lba48 = (cmd == WIN_WRITE_EXT);
1505 ide_abort_command(s);
1509 ide_cmd_lba48_transform(s, lba48);
1511 s->req_nb_sectors = 1;
1512 s->status = SEEK_STAT | READY_STAT;
1513 ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
1515 s->media_changed = 1;
1520 static bool cmd_read_dma(IDEState *s, uint8_t cmd)
1522 bool lba48 = (cmd == WIN_READDMA_EXT);
1525 ide_abort_command(s);
1529 ide_cmd_lba48_transform(s, lba48);
1530 ide_sector_start_dma(s, IDE_DMA_READ);
1535 static bool cmd_write_dma(IDEState *s, uint8_t cmd)
1537 bool lba48 = (cmd == WIN_WRITEDMA_EXT);
1540 ide_abort_command(s);
1544 ide_cmd_lba48_transform(s, lba48);
1545 ide_sector_start_dma(s, IDE_DMA_WRITE);
1547 s->media_changed = 1;
1552 static bool cmd_flush_cache(IDEState *s, uint8_t cmd)
1558 static bool cmd_seek(IDEState *s, uint8_t cmd)
1560 /* XXX: Check that seek is within bounds */
1564 static bool cmd_read_native_max(IDEState *s, uint8_t cmd)
1566 bool lba48 = (cmd == WIN_READ_NATIVE_MAX_EXT);
1568 /* Refuse if no sectors are addressable (e.g. medium not inserted) */
1569 if (s->nb_sectors == 0) {
1570 ide_abort_command(s);
1574 ide_cmd_lba48_transform(s, lba48);
1575 ide_set_sector(s, s->nb_sectors - 1);
1580 static bool cmd_check_power_mode(IDEState *s, uint8_t cmd)
1582 s->nsector = 0xff; /* device active or idle */
1586 static bool cmd_set_features(IDEState *s, uint8_t cmd)
1588 uint16_t *identify_data;
1591 ide_abort_command(s);
1595 /* XXX: valid for CDROM ? */
1596 switch (s->feature) {
1597 case 0x02: /* write cache enable */
1598 blk_set_enable_write_cache(s->blk, true);
1599 identify_data = (uint16_t *)s->identify_data;
1600 put_le16(identify_data + 85, (1 << 14) | (1 << 5) | 1);
1602 case 0x82: /* write cache disable */
1603 blk_set_enable_write_cache(s->blk, false);
1604 identify_data = (uint16_t *)s->identify_data;
1605 put_le16(identify_data + 85, (1 << 14) | 1);
1608 case 0xcc: /* reverting to power-on defaults enable */
1609 case 0x66: /* reverting to power-on defaults disable */
1610 case 0xaa: /* read look-ahead enable */
1611 case 0x55: /* read look-ahead disable */
1612 case 0x05: /* set advanced power management mode */
1613 case 0x85: /* disable advanced power management mode */
1614 case 0x69: /* NOP */
1615 case 0x67: /* NOP */
1616 case 0x96: /* NOP */
1617 case 0x9a: /* NOP */
1618 case 0x42: /* enable Automatic Acoustic Mode */
1619 case 0xc2: /* disable Automatic Acoustic Mode */
1621 case 0x03: /* set transfer mode */
1623 uint8_t val = s->nsector & 0x07;
1624 identify_data = (uint16_t *)s->identify_data;
1626 switch (s->nsector >> 3) {
1627 case 0x00: /* pio default */
1628 case 0x01: /* pio mode */
1629 put_le16(identify_data + 62, 0x07);
1630 put_le16(identify_data + 63, 0x07);
1631 put_le16(identify_data + 88, 0x3f);
1633 case 0x02: /* sigle word dma mode*/
1634 put_le16(identify_data + 62, 0x07 | (1 << (val + 8)));
1635 put_le16(identify_data + 63, 0x07);
1636 put_le16(identify_data + 88, 0x3f);
1638 case 0x04: /* mdma mode */
1639 put_le16(identify_data + 62, 0x07);
1640 put_le16(identify_data + 63, 0x07 | (1 << (val + 8)));
1641 put_le16(identify_data + 88, 0x3f);
1643 case 0x08: /* udma mode */
1644 put_le16(identify_data + 62, 0x07);
1645 put_le16(identify_data + 63, 0x07);
1646 put_le16(identify_data + 88, 0x3f | (1 << (val + 8)));
1656 ide_abort_command(s);
1661 /*** ATAPI commands ***/
1663 static bool cmd_identify_packet(IDEState *s, uint8_t cmd)
1665 ide_atapi_identify(s);
1666 s->status = READY_STAT | SEEK_STAT;
1667 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1668 ide_set_irq(s->bus);
1672 static bool cmd_exec_dev_diagnostic(IDEState *s, uint8_t cmd)
1674 ide_set_signature(s);
1676 if (s->drive_kind == IDE_CD) {
1677 s->status = 0; /* ATAPI spec (v6) section 9.10 defines packet
1678 * devices to return a clear status register
1679 * with READY_STAT *not* set. */
1682 s->status = READY_STAT | SEEK_STAT;
1683 /* The bits of the error register are not as usual for this command!
1684 * They are part of the regular output (this is why ERR_STAT isn't set)
1685 * Device 0 passed, Device 1 passed or not present. */
1687 ide_set_irq(s->bus);
1693 static bool cmd_packet(IDEState *s, uint8_t cmd)
1695 /* overlapping commands not supported */
1696 if (s->feature & 0x02) {
1697 ide_abort_command(s);
1701 s->status = READY_STAT | SEEK_STAT;
1702 s->atapi_dma = s->feature & 1;
1704 s->dma_cmd = IDE_DMA_ATAPI;
1707 ide_transfer_start(s, s->io_buffer, ATAPI_PACKET_SIZE,
1713 /*** CF-ATA commands ***/
1715 static bool cmd_cfa_req_ext_error_code(IDEState *s, uint8_t cmd)
1717 s->error = 0x09; /* miscellaneous error */
1718 s->status = READY_STAT | SEEK_STAT;
1719 ide_set_irq(s->bus);
1724 static bool cmd_cfa_erase_sectors(IDEState *s, uint8_t cmd)
1726 /* WIN_SECURITY_FREEZE_LOCK has the same ID as CFA_WEAR_LEVEL and is
1727 * required for Windows 8 to work with AHCI */
1729 if (cmd == CFA_WEAR_LEVEL) {
1733 if (cmd == CFA_ERASE_SECTORS) {
1734 s->media_changed = 1;
1740 static bool cmd_cfa_translate_sector(IDEState *s, uint8_t cmd)
1742 s->status = READY_STAT | SEEK_STAT;
1744 memset(s->io_buffer, 0, 0x200);
1745 s->io_buffer[0x00] = s->hcyl; /* Cyl MSB */
1746 s->io_buffer[0x01] = s->lcyl; /* Cyl LSB */
1747 s->io_buffer[0x02] = s->select; /* Head */
1748 s->io_buffer[0x03] = s->sector; /* Sector */
1749 s->io_buffer[0x04] = ide_get_sector(s) >> 16; /* LBA MSB */
1750 s->io_buffer[0x05] = ide_get_sector(s) >> 8; /* LBA */
1751 s->io_buffer[0x06] = ide_get_sector(s) >> 0; /* LBA LSB */
1752 s->io_buffer[0x13] = 0x00; /* Erase flag */
1753 s->io_buffer[0x18] = 0x00; /* Hot count */
1754 s->io_buffer[0x19] = 0x00; /* Hot count */
1755 s->io_buffer[0x1a] = 0x01; /* Hot count */
1757 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1758 ide_set_irq(s->bus);
1763 static bool cmd_cfa_access_metadata_storage(IDEState *s, uint8_t cmd)
1765 switch (s->feature) {
1766 case 0x02: /* Inquiry Metadata Storage */
1767 ide_cfata_metadata_inquiry(s);
1769 case 0x03: /* Read Metadata Storage */
1770 ide_cfata_metadata_read(s);
1772 case 0x04: /* Write Metadata Storage */
1773 ide_cfata_metadata_write(s);
1776 ide_abort_command(s);
1780 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1781 s->status = 0x00; /* NOTE: READY is _not_ set */
1782 ide_set_irq(s->bus);
1787 static bool cmd_ibm_sense_condition(IDEState *s, uint8_t cmd)
1789 switch (s->feature) {
1790 case 0x01: /* sense temperature in device */
1791 s->nsector = 0x50; /* +20 C */
1794 ide_abort_command(s);
1802 /*** SMART commands ***/
1804 static bool cmd_smart(IDEState *s, uint8_t cmd)
1808 if (s->hcyl != 0xc2 || s->lcyl != 0x4f) {
1812 if (!s->smart_enabled && s->feature != SMART_ENABLE) {
1816 switch (s->feature) {
1818 s->smart_enabled = 0;
1822 s->smart_enabled = 1;
1825 case SMART_ATTR_AUTOSAVE:
1826 switch (s->sector) {
1828 s->smart_autosave = 0;
1831 s->smart_autosave = 1;
1839 if (!s->smart_errors) {
1848 case SMART_READ_THRESH:
1849 memset(s->io_buffer, 0, 0x200);
1850 s->io_buffer[0] = 0x01; /* smart struct version */
1852 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1853 s->io_buffer[2 + 0 + (n * 12)] = smart_attributes[n][0];
1854 s->io_buffer[2 + 1 + (n * 12)] = smart_attributes[n][11];
1858 for (n = 0; n < 511; n++) {
1859 s->io_buffer[511] += s->io_buffer[n];
1861 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1863 s->status = READY_STAT | SEEK_STAT;
1864 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1865 ide_set_irq(s->bus);
1868 case SMART_READ_DATA:
1869 memset(s->io_buffer, 0, 0x200);
1870 s->io_buffer[0] = 0x01; /* smart struct version */
1872 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1874 for (i = 0; i < 11; i++) {
1875 s->io_buffer[2 + i + (n * 12)] = smart_attributes[n][i];
1879 s->io_buffer[362] = 0x02 | (s->smart_autosave ? 0x80 : 0x00);
1880 if (s->smart_selftest_count == 0) {
1881 s->io_buffer[363] = 0;
1884 s->smart_selftest_data[3 +
1885 (s->smart_selftest_count - 1) *
1888 s->io_buffer[364] = 0x20;
1889 s->io_buffer[365] = 0x01;
1890 /* offline data collection capacity: execute + self-test*/
1891 s->io_buffer[367] = (1 << 4 | 1 << 3 | 1);
1892 s->io_buffer[368] = 0x03; /* smart capability (1) */
1893 s->io_buffer[369] = 0x00; /* smart capability (2) */
1894 s->io_buffer[370] = 0x01; /* error logging supported */
1895 s->io_buffer[372] = 0x02; /* minutes for poll short test */
1896 s->io_buffer[373] = 0x36; /* minutes for poll ext test */
1897 s->io_buffer[374] = 0x01; /* minutes for poll conveyance */
1899 for (n = 0; n < 511; n++) {
1900 s->io_buffer[511] += s->io_buffer[n];
1902 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1904 s->status = READY_STAT | SEEK_STAT;
1905 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1906 ide_set_irq(s->bus);
1909 case SMART_READ_LOG:
1910 switch (s->sector) {
1911 case 0x01: /* summary smart error log */
1912 memset(s->io_buffer, 0, 0x200);
1913 s->io_buffer[0] = 0x01;
1914 s->io_buffer[1] = 0x00; /* no error entries */
1915 s->io_buffer[452] = s->smart_errors & 0xff;
1916 s->io_buffer[453] = (s->smart_errors & 0xff00) >> 8;
1918 for (n = 0; n < 511; n++) {
1919 s->io_buffer[511] += s->io_buffer[n];
1921 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1923 case 0x06: /* smart self test log */
1924 memset(s->io_buffer, 0, 0x200);
1925 s->io_buffer[0] = 0x01;
1926 if (s->smart_selftest_count == 0) {
1927 s->io_buffer[508] = 0;
1929 s->io_buffer[508] = s->smart_selftest_count;
1930 for (n = 2; n < 506; n++) {
1931 s->io_buffer[n] = s->smart_selftest_data[n];
1935 for (n = 0; n < 511; n++) {
1936 s->io_buffer[511] += s->io_buffer[n];
1938 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1943 s->status = READY_STAT | SEEK_STAT;
1944 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1945 ide_set_irq(s->bus);
1948 case SMART_EXECUTE_OFFLINE:
1949 switch (s->sector) {
1950 case 0: /* off-line routine */
1951 case 1: /* short self test */
1952 case 2: /* extended self test */
1953 s->smart_selftest_count++;
1954 if (s->smart_selftest_count > 21) {
1955 s->smart_selftest_count = 1;
1957 n = 2 + (s->smart_selftest_count - 1) * 24;
1958 s->smart_selftest_data[n] = s->sector;
1959 s->smart_selftest_data[n + 1] = 0x00; /* OK and finished */
1960 s->smart_selftest_data[n + 2] = 0x34; /* hour count lsb */
1961 s->smart_selftest_data[n + 3] = 0x12; /* hour count msb */
1970 ide_abort_command(s);
1974 #define HD_OK (1u << IDE_HD)
1975 #define CD_OK (1u << IDE_CD)
1976 #define CFA_OK (1u << IDE_CFATA)
1977 #define HD_CFA_OK (HD_OK | CFA_OK)
1978 #define ALL_OK (HD_OK | CD_OK | CFA_OK)
1980 /* Set the Disk Seek Completed status bit during completion */
1981 #define SET_DSC (1u << 8)
1983 /* See ACS-2 T13/2015-D Table B.2 Command codes */
1984 static const struct {
1985 /* Returns true if the completion code should be run */
1986 bool (*handler)(IDEState *s, uint8_t cmd);
1988 } ide_cmd_table[0x100] = {
1989 /* NOP not implemented, mandatory for CD */
1990 [CFA_REQ_EXT_ERROR_CODE] = { cmd_cfa_req_ext_error_code, CFA_OK },
1991 [WIN_DSM] = { cmd_data_set_management, HD_CFA_OK },
1992 [WIN_DEVICE_RESET] = { cmd_device_reset, CD_OK },
1993 [WIN_RECAL] = { cmd_nop, HD_CFA_OK | SET_DSC},
1994 [WIN_READ] = { cmd_read_pio, ALL_OK },
1995 [WIN_READ_ONCE] = { cmd_read_pio, HD_CFA_OK },
1996 [WIN_READ_EXT] = { cmd_read_pio, HD_CFA_OK },
1997 [WIN_READDMA_EXT] = { cmd_read_dma, HD_CFA_OK },
1998 [WIN_READ_NATIVE_MAX_EXT] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
1999 [WIN_MULTREAD_EXT] = { cmd_read_multiple, HD_CFA_OK },
2000 [WIN_WRITE] = { cmd_write_pio, HD_CFA_OK },
2001 [WIN_WRITE_ONCE] = { cmd_write_pio, HD_CFA_OK },
2002 [WIN_WRITE_EXT] = { cmd_write_pio, HD_CFA_OK },
2003 [WIN_WRITEDMA_EXT] = { cmd_write_dma, HD_CFA_OK },
2004 [CFA_WRITE_SECT_WO_ERASE] = { cmd_write_pio, CFA_OK },
2005 [WIN_MULTWRITE_EXT] = { cmd_write_multiple, HD_CFA_OK },
2006 [WIN_WRITE_VERIFY] = { cmd_write_pio, HD_CFA_OK },
2007 [WIN_VERIFY] = { cmd_verify, HD_CFA_OK | SET_DSC },
2008 [WIN_VERIFY_ONCE] = { cmd_verify, HD_CFA_OK | SET_DSC },
2009 [WIN_VERIFY_EXT] = { cmd_verify, HD_CFA_OK | SET_DSC },
2010 [WIN_SEEK] = { cmd_seek, HD_CFA_OK | SET_DSC },
2011 [CFA_TRANSLATE_SECTOR] = { cmd_cfa_translate_sector, CFA_OK },
2012 [WIN_DIAGNOSE] = { cmd_exec_dev_diagnostic, ALL_OK },
2013 [WIN_SPECIFY] = { cmd_nop, HD_CFA_OK | SET_DSC },
2014 [WIN_STANDBYNOW2] = { cmd_nop, HD_CFA_OK },
2015 [WIN_IDLEIMMEDIATE2] = { cmd_nop, HD_CFA_OK },
2016 [WIN_STANDBY2] = { cmd_nop, HD_CFA_OK },
2017 [WIN_SETIDLE2] = { cmd_nop, HD_CFA_OK },
2018 [WIN_CHECKPOWERMODE2] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2019 [WIN_SLEEPNOW2] = { cmd_nop, HD_CFA_OK },
2020 [WIN_PACKETCMD] = { cmd_packet, CD_OK },
2021 [WIN_PIDENTIFY] = { cmd_identify_packet, CD_OK },
2022 [WIN_SMART] = { cmd_smart, HD_CFA_OK | SET_DSC },
2023 [CFA_ACCESS_METADATA_STORAGE] = { cmd_cfa_access_metadata_storage, CFA_OK },
2024 [CFA_ERASE_SECTORS] = { cmd_cfa_erase_sectors, CFA_OK | SET_DSC },
2025 [WIN_MULTREAD] = { cmd_read_multiple, HD_CFA_OK },
2026 [WIN_MULTWRITE] = { cmd_write_multiple, HD_CFA_OK },
2027 [WIN_SETMULT] = { cmd_set_multiple_mode, HD_CFA_OK | SET_DSC },
2028 [WIN_READDMA] = { cmd_read_dma, HD_CFA_OK },
2029 [WIN_READDMA_ONCE] = { cmd_read_dma, HD_CFA_OK },
2030 [WIN_WRITEDMA] = { cmd_write_dma, HD_CFA_OK },
2031 [WIN_WRITEDMA_ONCE] = { cmd_write_dma, HD_CFA_OK },
2032 [CFA_WRITE_MULTI_WO_ERASE] = { cmd_write_multiple, CFA_OK },
2033 [WIN_STANDBYNOW1] = { cmd_nop, HD_CFA_OK },
2034 [WIN_IDLEIMMEDIATE] = { cmd_nop, HD_CFA_OK },
2035 [WIN_STANDBY] = { cmd_nop, HD_CFA_OK },
2036 [WIN_SETIDLE1] = { cmd_nop, HD_CFA_OK },
2037 [WIN_CHECKPOWERMODE1] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2038 [WIN_SLEEPNOW1] = { cmd_nop, HD_CFA_OK },
2039 [WIN_FLUSH_CACHE] = { cmd_flush_cache, ALL_OK },
2040 [WIN_FLUSH_CACHE_EXT] = { cmd_flush_cache, HD_CFA_OK },
2041 [WIN_IDENTIFY] = { cmd_identify, ALL_OK },
2042 [WIN_SETFEATURES] = { cmd_set_features, ALL_OK | SET_DSC },
2043 [IBM_SENSE_CONDITION] = { cmd_ibm_sense_condition, CFA_OK | SET_DSC },
2044 [CFA_WEAR_LEVEL] = { cmd_cfa_erase_sectors, HD_CFA_OK | SET_DSC },
2045 [WIN_READ_NATIVE_MAX] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
2048 static bool ide_cmd_permitted(IDEState *s, uint32_t cmd)
2050 return cmd < ARRAY_SIZE(ide_cmd_table)
2051 && (ide_cmd_table[cmd].flags & (1u << s->drive_kind));
2054 void ide_exec_cmd(IDEBus *bus, uint32_t val)
2059 s = idebus_active_if(bus);
2060 trace_ide_exec_cmd(bus, s, val);
2062 /* ignore commands to non existent slave */
2063 if (s != bus->ifs && !s->blk) {
2067 /* Only RESET is allowed while BSY and/or DRQ are set,
2068 * and only to ATAPI devices. */
2069 if (s->status & (BUSY_STAT|DRQ_STAT)) {
2070 if (val != WIN_DEVICE_RESET || s->drive_kind != IDE_CD) {
2075 if (!ide_cmd_permitted(s, val)) {
2076 ide_abort_command(s);
2077 ide_set_irq(s->bus);
2081 s->status = READY_STAT | BUSY_STAT;
2083 s->io_buffer_offset = 0;
2085 complete = ide_cmd_table[val].handler(s, val);
2087 s->status &= ~BUSY_STAT;
2088 assert(!!s->error == !!(s->status & ERR_STAT));
2090 if ((ide_cmd_table[val].flags & SET_DSC) && !s->error) {
2091 s->status |= SEEK_STAT;
2095 ide_set_irq(s->bus);
2099 /* IOport [R]ead [R]egisters */
2100 enum ATA_IOPORT_RR {
2101 ATA_IOPORT_RR_DATA = 0,
2102 ATA_IOPORT_RR_ERROR = 1,
2103 ATA_IOPORT_RR_SECTOR_COUNT = 2,
2104 ATA_IOPORT_RR_SECTOR_NUMBER = 3,
2105 ATA_IOPORT_RR_CYLINDER_LOW = 4,
2106 ATA_IOPORT_RR_CYLINDER_HIGH = 5,
2107 ATA_IOPORT_RR_DEVICE_HEAD = 6,
2108 ATA_IOPORT_RR_STATUS = 7,
2109 ATA_IOPORT_RR_NUM_REGISTERS,
2112 const char *ATA_IOPORT_RR_lookup[ATA_IOPORT_RR_NUM_REGISTERS] = {
2113 [ATA_IOPORT_RR_DATA] = "Data",
2114 [ATA_IOPORT_RR_ERROR] = "Error",
2115 [ATA_IOPORT_RR_SECTOR_COUNT] = "Sector Count",
2116 [ATA_IOPORT_RR_SECTOR_NUMBER] = "Sector Number",
2117 [ATA_IOPORT_RR_CYLINDER_LOW] = "Cylinder Low",
2118 [ATA_IOPORT_RR_CYLINDER_HIGH] = "Cylinder High",
2119 [ATA_IOPORT_RR_DEVICE_HEAD] = "Device/Head",
2120 [ATA_IOPORT_RR_STATUS] = "Status"
2123 uint32_t ide_ioport_read(void *opaque, uint32_t addr)
2125 IDEBus *bus = opaque;
2126 IDEState *s = idebus_active_if(bus);
2131 /* FIXME: HOB readback uses bit 7, but it's always set right now */
2132 //hob = s->select & (1 << 7);
2135 case ATA_IOPORT_RR_DATA:
2138 case ATA_IOPORT_RR_ERROR:
2139 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2140 (s != bus->ifs && !s->blk)) {
2145 ret = s->hob_feature;
2148 case ATA_IOPORT_RR_SECTOR_COUNT:
2149 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2152 ret = s->nsector & 0xff;
2154 ret = s->hob_nsector;
2157 case ATA_IOPORT_RR_SECTOR_NUMBER:
2158 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2163 ret = s->hob_sector;
2166 case ATA_IOPORT_RR_CYLINDER_LOW:
2167 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2175 case ATA_IOPORT_RR_CYLINDER_HIGH:
2176 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2184 case ATA_IOPORT_RR_DEVICE_HEAD:
2185 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2192 case ATA_IOPORT_RR_STATUS:
2193 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2194 (s != bus->ifs && !s->blk)) {
2199 qemu_irq_lower(bus->irq);
2203 trace_ide_ioport_read(addr, ATA_IOPORT_RR_lookup[reg_num], ret, bus, s);
2207 uint32_t ide_status_read(void *opaque, uint32_t addr)
2209 IDEBus *bus = opaque;
2210 IDEState *s = idebus_active_if(bus);
2213 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2214 (s != bus->ifs && !s->blk)) {
2220 trace_ide_status_read(addr, ret, bus, s);
2224 void ide_cmd_write(void *opaque, uint32_t addr, uint32_t val)
2226 IDEBus *bus = opaque;
2230 trace_ide_cmd_write(addr, val, bus);
2232 /* common for both drives */
2233 if (!(bus->cmd & IDE_CMD_RESET) &&
2234 (val & IDE_CMD_RESET)) {
2235 /* reset low to high */
2236 for(i = 0;i < 2; i++) {
2238 s->status = BUSY_STAT | SEEK_STAT;
2241 } else if ((bus->cmd & IDE_CMD_RESET) &&
2242 !(val & IDE_CMD_RESET)) {
2244 for(i = 0;i < 2; i++) {
2246 if (s->drive_kind == IDE_CD)
2247 s->status = 0x00; /* NOTE: READY is _not_ set */
2249 s->status = READY_STAT | SEEK_STAT;
2250 ide_set_signature(s);
2258 * Returns true if the running PIO transfer is a PIO out (i.e. data is
2259 * transferred from the device to the guest), false if it's a PIO in
2261 static bool ide_is_pio_out(IDEState *s)
2263 if (s->end_transfer_func == ide_sector_write ||
2264 s->end_transfer_func == ide_atapi_cmd) {
2266 } else if (s->end_transfer_func == ide_sector_read ||
2267 s->end_transfer_func == ide_transfer_stop ||
2268 s->end_transfer_func == ide_atapi_cmd_reply_end ||
2269 s->end_transfer_func == ide_dummy_transfer_stop) {
2276 void ide_data_writew(void *opaque, uint32_t addr, uint32_t val)
2278 IDEBus *bus = opaque;
2279 IDEState *s = idebus_active_if(bus);
2282 trace_ide_data_writew(addr, val, bus, s);
2284 /* PIO data access allowed only when DRQ bit is set. The result of a write
2285 * during PIO out is indeterminate, just ignore it. */
2286 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2291 if (p + 2 > s->data_end) {
2295 *(uint16_t *)p = le16_to_cpu(val);
2298 if (p >= s->data_end) {
2299 s->status &= ~DRQ_STAT;
2300 s->end_transfer_func(s);
2304 uint32_t ide_data_readw(void *opaque, uint32_t addr)
2306 IDEBus *bus = opaque;
2307 IDEState *s = idebus_active_if(bus);
2311 /* PIO data access allowed only when DRQ bit is set. The result of a read
2312 * during PIO in is indeterminate, return 0 and don't move forward. */
2313 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2318 if (p + 2 > s->data_end) {
2322 ret = cpu_to_le16(*(uint16_t *)p);
2325 if (p >= s->data_end) {
2326 s->status &= ~DRQ_STAT;
2327 s->end_transfer_func(s);
2330 trace_ide_data_readw(addr, ret, bus, s);
2334 void ide_data_writel(void *opaque, uint32_t addr, uint32_t val)
2336 IDEBus *bus = opaque;
2337 IDEState *s = idebus_active_if(bus);
2340 trace_ide_data_writel(addr, val, bus, s);
2342 /* PIO data access allowed only when DRQ bit is set. The result of a write
2343 * during PIO out is indeterminate, just ignore it. */
2344 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2349 if (p + 4 > s->data_end) {
2353 *(uint32_t *)p = le32_to_cpu(val);
2356 if (p >= s->data_end) {
2357 s->status &= ~DRQ_STAT;
2358 s->end_transfer_func(s);
2362 uint32_t ide_data_readl(void *opaque, uint32_t addr)
2364 IDEBus *bus = opaque;
2365 IDEState *s = idebus_active_if(bus);
2369 /* PIO data access allowed only when DRQ bit is set. The result of a read
2370 * during PIO in is indeterminate, return 0 and don't move forward. */
2371 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2377 if (p + 4 > s->data_end) {
2381 ret = cpu_to_le32(*(uint32_t *)p);
2384 if (p >= s->data_end) {
2385 s->status &= ~DRQ_STAT;
2386 s->end_transfer_func(s);
2390 trace_ide_data_readl(addr, ret, bus, s);
2394 static void ide_dummy_transfer_stop(IDEState *s)
2396 s->data_ptr = s->io_buffer;
2397 s->data_end = s->io_buffer;
2398 s->io_buffer[0] = 0xff;
2399 s->io_buffer[1] = 0xff;
2400 s->io_buffer[2] = 0xff;
2401 s->io_buffer[3] = 0xff;
2404 void ide_bus_reset(IDEBus *bus)
2408 ide_reset(&bus->ifs[0]);
2409 ide_reset(&bus->ifs[1]);
2412 /* pending async DMA */
2413 if (bus->dma->aiocb) {
2414 trace_ide_bus_reset_aio();
2415 blk_aio_cancel(bus->dma->aiocb);
2416 bus->dma->aiocb = NULL;
2419 /* reset dma provider too */
2420 if (bus->dma->ops->reset) {
2421 bus->dma->ops->reset(bus->dma);
2425 static bool ide_cd_is_tray_open(void *opaque)
2427 return ((IDEState *)opaque)->tray_open;
2430 static bool ide_cd_is_medium_locked(void *opaque)
2432 return ((IDEState *)opaque)->tray_locked;
2435 static void ide_resize_cb(void *opaque)
2437 IDEState *s = opaque;
2438 uint64_t nb_sectors;
2440 if (!s->identify_set) {
2444 blk_get_geometry(s->blk, &nb_sectors);
2445 s->nb_sectors = nb_sectors;
2447 /* Update the identify data buffer. */
2448 if (s->drive_kind == IDE_CFATA) {
2449 ide_cfata_identify_size(s);
2451 /* IDE_CD uses a different set of callbacks entirely. */
2452 assert(s->drive_kind != IDE_CD);
2453 ide_identify_size(s);
2457 static const BlockDevOps ide_cd_block_ops = {
2458 .change_media_cb = ide_cd_change_cb,
2459 .eject_request_cb = ide_cd_eject_request_cb,
2460 .is_tray_open = ide_cd_is_tray_open,
2461 .is_medium_locked = ide_cd_is_medium_locked,
2464 static const BlockDevOps ide_hd_block_ops = {
2465 .resize_cb = ide_resize_cb,
2468 int ide_init_drive(IDEState *s, BlockBackend *blk, IDEDriveKind kind,
2469 const char *version, const char *serial, const char *model,
2471 uint32_t cylinders, uint32_t heads, uint32_t secs,
2472 int chs_trans, Error **errp)
2474 uint64_t nb_sectors;
2477 s->drive_kind = kind;
2479 blk_get_geometry(blk, &nb_sectors);
2480 s->cylinders = cylinders;
2483 s->chs_trans = chs_trans;
2484 s->nb_sectors = nb_sectors;
2486 /* The SMART values should be preserved across power cycles
2488 s->smart_enabled = 1;
2489 s->smart_autosave = 1;
2490 s->smart_errors = 0;
2491 s->smart_selftest_count = 0;
2492 if (kind == IDE_CD) {
2493 blk_set_dev_ops(blk, &ide_cd_block_ops, s);
2494 blk_set_guest_block_size(blk, 2048);
2496 if (!blk_is_inserted(s->blk)) {
2497 error_setg(errp, "Device needs media, but drive is empty");
2500 if (blk_is_read_only(blk)) {
2501 error_setg(errp, "Can't use a read-only drive");
2504 blk_set_dev_ops(blk, &ide_hd_block_ops, s);
2507 pstrcpy(s->drive_serial_str, sizeof(s->drive_serial_str), serial);
2509 snprintf(s->drive_serial_str, sizeof(s->drive_serial_str),
2510 "QM%05d", s->drive_serial);
2513 pstrcpy(s->drive_model_str, sizeof(s->drive_model_str), model);
2517 strcpy(s->drive_model_str, "QEMU DVD-ROM");
2520 strcpy(s->drive_model_str, "QEMU MICRODRIVE");
2523 strcpy(s->drive_model_str, "QEMU HARDDISK");
2529 pstrcpy(s->version, sizeof(s->version), version);
2531 pstrcpy(s->version, sizeof(s->version), qemu_hw_version());
2535 blk_iostatus_enable(blk);
2539 static void ide_init1(IDEBus *bus, int unit)
2541 static int drive_serial = 1;
2542 IDEState *s = &bus->ifs[unit];
2546 s->drive_serial = drive_serial++;
2547 /* we need at least 2k alignment for accessing CDROMs using O_DIRECT */
2548 s->io_buffer_total_len = IDE_DMA_BUF_SECTORS*512 + 4;
2549 s->io_buffer = qemu_memalign(2048, s->io_buffer_total_len);
2550 memset(s->io_buffer, 0, s->io_buffer_total_len);
2552 s->smart_selftest_data = blk_blockalign(s->blk, 512);
2553 memset(s->smart_selftest_data, 0, 512);
2555 s->sector_write_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
2556 ide_sector_write_timer_cb, s);
2559 static int ide_nop_int(IDEDMA *dma, int x)
2564 static void ide_nop(IDEDMA *dma)
2568 static int32_t ide_nop_int32(IDEDMA *dma, int32_t l)
2573 static const IDEDMAOps ide_dma_nop_ops = {
2574 .prepare_buf = ide_nop_int32,
2575 .restart_dma = ide_nop,
2576 .rw_buf = ide_nop_int,
2579 static void ide_restart_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
2581 s->unit = s->bus->retry_unit;
2582 ide_set_sector(s, s->bus->retry_sector_num);
2583 s->nsector = s->bus->retry_nsector;
2584 s->bus->dma->ops->restart_dma(s->bus->dma);
2585 s->io_buffer_size = 0;
2586 s->dma_cmd = dma_cmd;
2587 ide_start_dma(s, ide_dma_cb);
2590 static void ide_restart_bh(void *opaque)
2592 IDEBus *bus = opaque;
2597 qemu_bh_delete(bus->bh);
2600 error_status = bus->error_status;
2601 if (bus->error_status == 0) {
2605 s = idebus_active_if(bus);
2606 is_read = (bus->error_status & IDE_RETRY_READ) != 0;
2608 /* The error status must be cleared before resubmitting the request: The
2609 * request may fail again, and this case can only be distinguished if the
2610 * called function can set a new error status. */
2611 bus->error_status = 0;
2613 /* The HBA has generically asked to be kicked on retry */
2614 if (error_status & IDE_RETRY_HBA) {
2615 if (s->bus->dma->ops->restart) {
2616 s->bus->dma->ops->restart(s->bus->dma);
2618 } else if (IS_IDE_RETRY_DMA(error_status)) {
2619 if (error_status & IDE_RETRY_TRIM) {
2620 ide_restart_dma(s, IDE_DMA_TRIM);
2622 ide_restart_dma(s, is_read ? IDE_DMA_READ : IDE_DMA_WRITE);
2624 } else if (IS_IDE_RETRY_PIO(error_status)) {
2628 ide_sector_write(s);
2630 } else if (error_status & IDE_RETRY_FLUSH) {
2632 } else if (IS_IDE_RETRY_ATAPI(error_status)) {
2633 assert(s->end_transfer_func == ide_atapi_cmd);
2634 ide_atapi_dma_restart(s);
2640 static void ide_restart_cb(void *opaque, int running, RunState state)
2642 IDEBus *bus = opaque;
2648 bus->bh = qemu_bh_new(ide_restart_bh, bus);
2649 qemu_bh_schedule(bus->bh);
2653 void ide_register_restart_cb(IDEBus *bus)
2655 if (bus->dma->ops->restart_dma) {
2656 bus->vmstate = qemu_add_vm_change_state_handler(ide_restart_cb, bus);
2660 static IDEDMA ide_dma_nop = {
2661 .ops = &ide_dma_nop_ops,
2665 void ide_init2(IDEBus *bus, qemu_irq irq)
2669 for(i = 0; i < 2; i++) {
2671 ide_reset(&bus->ifs[i]);
2674 bus->dma = &ide_dma_nop;
2677 void ide_exit(IDEState *s)
2679 timer_del(s->sector_write_timer);
2680 timer_free(s->sector_write_timer);
2681 qemu_vfree(s->smart_selftest_data);
2682 qemu_vfree(s->io_buffer);
2685 static bool is_identify_set(void *opaque, int version_id)
2687 IDEState *s = opaque;
2689 return s->identify_set != 0;
2692 static EndTransferFunc* transfer_end_table[] = {
2696 ide_atapi_cmd_reply_end,
2698 ide_dummy_transfer_stop,
2701 static int transfer_end_table_idx(EndTransferFunc *fn)
2705 for (i = 0; i < ARRAY_SIZE(transfer_end_table); i++)
2706 if (transfer_end_table[i] == fn)
2712 static int ide_drive_post_load(void *opaque, int version_id)
2714 IDEState *s = opaque;
2716 if (s->blk && s->identify_set) {
2717 blk_set_enable_write_cache(s->blk, !!(s->identify_data[85] & (1 << 5)));
2722 static int ide_drive_pio_post_load(void *opaque, int version_id)
2724 IDEState *s = opaque;
2726 if (s->end_transfer_fn_idx >= ARRAY_SIZE(transfer_end_table)) {
2729 s->end_transfer_func = transfer_end_table[s->end_transfer_fn_idx];
2730 s->data_ptr = s->io_buffer + s->cur_io_buffer_offset;
2731 s->data_end = s->data_ptr + s->cur_io_buffer_len;
2732 s->atapi_dma = s->feature & 1; /* as per cmd_packet */
2737 static int ide_drive_pio_pre_save(void *opaque)
2739 IDEState *s = opaque;
2742 s->cur_io_buffer_offset = s->data_ptr - s->io_buffer;
2743 s->cur_io_buffer_len = s->data_end - s->data_ptr;
2745 idx = transfer_end_table_idx(s->end_transfer_func);
2747 fprintf(stderr, "%s: invalid end_transfer_func for DRQ_STAT\n",
2749 s->end_transfer_fn_idx = 2;
2751 s->end_transfer_fn_idx = idx;
2757 static bool ide_drive_pio_state_needed(void *opaque)
2759 IDEState *s = opaque;
2761 return ((s->status & DRQ_STAT) != 0)
2762 || (s->bus->error_status & IDE_RETRY_PIO);
2765 static bool ide_tray_state_needed(void *opaque)
2767 IDEState *s = opaque;
2769 return s->tray_open || s->tray_locked;
2772 static bool ide_atapi_gesn_needed(void *opaque)
2774 IDEState *s = opaque;
2776 return s->events.new_media || s->events.eject_request;
2779 static bool ide_error_needed(void *opaque)
2781 IDEBus *bus = opaque;
2783 return (bus->error_status != 0);
2786 /* Fields for GET_EVENT_STATUS_NOTIFICATION ATAPI command */
2787 static const VMStateDescription vmstate_ide_atapi_gesn_state = {
2788 .name ="ide_drive/atapi/gesn_state",
2790 .minimum_version_id = 1,
2791 .needed = ide_atapi_gesn_needed,
2792 .fields = (VMStateField[]) {
2793 VMSTATE_BOOL(events.new_media, IDEState),
2794 VMSTATE_BOOL(events.eject_request, IDEState),
2795 VMSTATE_END_OF_LIST()
2799 static const VMStateDescription vmstate_ide_tray_state = {
2800 .name = "ide_drive/tray_state",
2802 .minimum_version_id = 1,
2803 .needed = ide_tray_state_needed,
2804 .fields = (VMStateField[]) {
2805 VMSTATE_BOOL(tray_open, IDEState),
2806 VMSTATE_BOOL(tray_locked, IDEState),
2807 VMSTATE_END_OF_LIST()
2811 static const VMStateDescription vmstate_ide_drive_pio_state = {
2812 .name = "ide_drive/pio_state",
2814 .minimum_version_id = 1,
2815 .pre_save = ide_drive_pio_pre_save,
2816 .post_load = ide_drive_pio_post_load,
2817 .needed = ide_drive_pio_state_needed,
2818 .fields = (VMStateField[]) {
2819 VMSTATE_INT32(req_nb_sectors, IDEState),
2820 VMSTATE_VARRAY_INT32(io_buffer, IDEState, io_buffer_total_len, 1,
2821 vmstate_info_uint8, uint8_t),
2822 VMSTATE_INT32(cur_io_buffer_offset, IDEState),
2823 VMSTATE_INT32(cur_io_buffer_len, IDEState),
2824 VMSTATE_UINT8(end_transfer_fn_idx, IDEState),
2825 VMSTATE_INT32(elementary_transfer_size, IDEState),
2826 VMSTATE_INT32(packet_transfer_size, IDEState),
2827 VMSTATE_END_OF_LIST()
2831 const VMStateDescription vmstate_ide_drive = {
2832 .name = "ide_drive",
2834 .minimum_version_id = 0,
2835 .post_load = ide_drive_post_load,
2836 .fields = (VMStateField[]) {
2837 VMSTATE_INT32(mult_sectors, IDEState),
2838 VMSTATE_INT32(identify_set, IDEState),
2839 VMSTATE_BUFFER_TEST(identify_data, IDEState, is_identify_set),
2840 VMSTATE_UINT8(feature, IDEState),
2841 VMSTATE_UINT8(error, IDEState),
2842 VMSTATE_UINT32(nsector, IDEState),
2843 VMSTATE_UINT8(sector, IDEState),
2844 VMSTATE_UINT8(lcyl, IDEState),
2845 VMSTATE_UINT8(hcyl, IDEState),
2846 VMSTATE_UINT8(hob_feature, IDEState),
2847 VMSTATE_UINT8(hob_sector, IDEState),
2848 VMSTATE_UINT8(hob_nsector, IDEState),
2849 VMSTATE_UINT8(hob_lcyl, IDEState),
2850 VMSTATE_UINT8(hob_hcyl, IDEState),
2851 VMSTATE_UINT8(select, IDEState),
2852 VMSTATE_UINT8(status, IDEState),
2853 VMSTATE_UINT8(lba48, IDEState),
2854 VMSTATE_UINT8(sense_key, IDEState),
2855 VMSTATE_UINT8(asc, IDEState),
2856 VMSTATE_UINT8_V(cdrom_changed, IDEState, 3),
2857 VMSTATE_END_OF_LIST()
2859 .subsections = (const VMStateDescription*[]) {
2860 &vmstate_ide_drive_pio_state,
2861 &vmstate_ide_tray_state,
2862 &vmstate_ide_atapi_gesn_state,
2867 static const VMStateDescription vmstate_ide_error_status = {
2868 .name ="ide_bus/error",
2870 .minimum_version_id = 1,
2871 .needed = ide_error_needed,
2872 .fields = (VMStateField[]) {
2873 VMSTATE_INT32(error_status, IDEBus),
2874 VMSTATE_INT64_V(retry_sector_num, IDEBus, 2),
2875 VMSTATE_UINT32_V(retry_nsector, IDEBus, 2),
2876 VMSTATE_UINT8_V(retry_unit, IDEBus, 2),
2877 VMSTATE_END_OF_LIST()
2881 const VMStateDescription vmstate_ide_bus = {
2884 .minimum_version_id = 1,
2885 .fields = (VMStateField[]) {
2886 VMSTATE_UINT8(cmd, IDEBus),
2887 VMSTATE_UINT8(unit, IDEBus),
2888 VMSTATE_END_OF_LIST()
2890 .subsections = (const VMStateDescription*[]) {
2891 &vmstate_ide_error_status,
2896 void ide_drive_get(DriveInfo **hd, int n)
2900 for (i = 0; i < n; i++) {
2901 hd[i] = drive_get_by_index(IF_IDE, i);