Merge tag 'pull-testing-gdbstub-plugins-gitdm-061022-3' of https://github.com/stsquad...
[qemu.git] / hw / ide / core.c
1 /*
2 * QEMU IDE disk and CD/DVD-ROM Emulator
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 * Copyright (c) 2006 Openedhand Ltd.
6 *
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:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
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
23 * THE SOFTWARE.
24 */
25
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"
42 #include "trace.h"
43
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},
50 /* spin up */
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},
56 /* power on hours */
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},
62 };
63
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"
69 };
70
71 static const char *IDE_DMA_CMD_str(enum ide_dma_cmd enval)
72 {
73 if ((unsigned)enval < IDE_DMA__COUNT) {
74 return IDE_DMA_CMD_lookup[enval];
75 }
76 return "DMA UNKNOWN CMD";
77 }
78
79 static void ide_dummy_transfer_stop(IDEState *s);
80
81 static void padstr(char *str, const char *src, int len)
82 {
83 int i, v;
84 for(i = 0; i < len; i++) {
85 if (*src)
86 v = *src++;
87 else
88 v = ' ';
89 str[i^1] = v;
90 }
91 }
92
93 static void put_le16(uint16_t *p, unsigned int v)
94 {
95 *p = cpu_to_le16(v);
96 }
97
98 static void ide_identify_size(IDEState *s)
99 {
100 uint16_t *p = (uint16_t *)s->identify_data;
101 int64_t nb_sectors_lba28 = s->nb_sectors;
102 if (nb_sectors_lba28 >= 1 << 28) {
103 nb_sectors_lba28 = (1 << 28) - 1;
104 }
105 put_le16(p + 60, nb_sectors_lba28);
106 put_le16(p + 61, nb_sectors_lba28 >> 16);
107 put_le16(p + 100, s->nb_sectors);
108 put_le16(p + 101, s->nb_sectors >> 16);
109 put_le16(p + 102, s->nb_sectors >> 32);
110 put_le16(p + 103, s->nb_sectors >> 48);
111 }
112
113 static void ide_identify(IDEState *s)
114 {
115 uint16_t *p;
116 unsigned int oldsize;
117 IDEDevice *dev = s->unit ? s->bus->slave : s->bus->master;
118
119 p = (uint16_t *)s->identify_data;
120 if (s->identify_set) {
121 goto fill_buffer;
122 }
123 memset(p, 0, sizeof(s->identify_data));
124
125 put_le16(p + 0, 0x0040);
126 put_le16(p + 1, s->cylinders);
127 put_le16(p + 3, s->heads);
128 put_le16(p + 4, 512 * s->sectors); /* XXX: retired, remove ? */
129 put_le16(p + 5, 512); /* XXX: retired, remove ? */
130 put_le16(p + 6, s->sectors);
131 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
132 put_le16(p + 20, 3); /* XXX: retired, remove ? */
133 put_le16(p + 21, 512); /* cache size in sectors */
134 put_le16(p + 22, 4); /* ecc bytes */
135 padstr((char *)(p + 23), s->version, 8); /* firmware version */
136 padstr((char *)(p + 27), s->drive_model_str, 40); /* model */
137 #if MAX_MULT_SECTORS > 1
138 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
139 #endif
140 put_le16(p + 48, 1); /* dword I/O */
141 put_le16(p + 49, (1 << 11) | (1 << 9) | (1 << 8)); /* DMA and LBA supported */
142 put_le16(p + 51, 0x200); /* PIO transfer cycle */
143 put_le16(p + 52, 0x200); /* DMA transfer cycle */
144 put_le16(p + 53, 1 | (1 << 1) | (1 << 2)); /* words 54-58,64-70,88 are valid */
145 put_le16(p + 54, s->cylinders);
146 put_le16(p + 55, s->heads);
147 put_le16(p + 56, s->sectors);
148 oldsize = s->cylinders * s->heads * s->sectors;
149 put_le16(p + 57, oldsize);
150 put_le16(p + 58, oldsize >> 16);
151 if (s->mult_sectors)
152 put_le16(p + 59, 0x100 | s->mult_sectors);
153 /* *(p + 60) := nb_sectors -- see ide_identify_size */
154 /* *(p + 61) := nb_sectors >> 16 -- see ide_identify_size */
155 put_le16(p + 62, 0x07); /* single word dma0-2 supported */
156 put_le16(p + 63, 0x07); /* mdma0-2 supported */
157 put_le16(p + 64, 0x03); /* pio3-4 supported */
158 put_le16(p + 65, 120);
159 put_le16(p + 66, 120);
160 put_le16(p + 67, 120);
161 put_le16(p + 68, 120);
162 if (dev && dev->conf.discard_granularity) {
163 put_le16(p + 69, (1 << 14)); /* determinate TRIM behavior */
164 }
165
166 if (s->ncq_queues) {
167 put_le16(p + 75, s->ncq_queues - 1);
168 /* NCQ supported */
169 put_le16(p + 76, (1 << 8));
170 }
171
172 put_le16(p + 80, 0xf0); /* ata3 -> ata6 supported */
173 put_le16(p + 81, 0x16); /* conforms to ata5 */
174 /* 14=NOP supported, 5=WCACHE supported, 0=SMART supported */
175 put_le16(p + 82, (1 << 14) | (1 << 5) | 1);
176 /* 13=flush_cache_ext,12=flush_cache,10=lba48 */
177 put_le16(p + 83, (1 << 14) | (1 << 13) | (1 <<12) | (1 << 10));
178 /* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
179 if (s->wwn) {
180 put_le16(p + 84, (1 << 14) | (1 << 8) | 0);
181 } else {
182 put_le16(p + 84, (1 << 14) | 0);
183 }
184 /* 14 = NOP supported, 5=WCACHE enabled, 0=SMART feature set enabled */
185 if (blk_enable_write_cache(s->blk)) {
186 put_le16(p + 85, (1 << 14) | (1 << 5) | 1);
187 } else {
188 put_le16(p + 85, (1 << 14) | 1);
189 }
190 /* 13=flush_cache_ext,12=flush_cache,10=lba48 */
191 put_le16(p + 86, (1 << 13) | (1 <<12) | (1 << 10));
192 /* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
193 if (s->wwn) {
194 put_le16(p + 87, (1 << 14) | (1 << 8) | 0);
195 } else {
196 put_le16(p + 87, (1 << 14) | 0);
197 }
198 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
199 put_le16(p + 93, 1 | (1 << 14) | 0x2000);
200 /* *(p + 100) := nb_sectors -- see ide_identify_size */
201 /* *(p + 101) := nb_sectors >> 16 -- see ide_identify_size */
202 /* *(p + 102) := nb_sectors >> 32 -- see ide_identify_size */
203 /* *(p + 103) := nb_sectors >> 48 -- see ide_identify_size */
204
205 if (dev && dev->conf.physical_block_size)
206 put_le16(p + 106, 0x6000 | get_physical_block_exp(&dev->conf));
207 if (s->wwn) {
208 /* LE 16-bit words 111-108 contain 64-bit World Wide Name */
209 put_le16(p + 108, s->wwn >> 48);
210 put_le16(p + 109, s->wwn >> 32);
211 put_le16(p + 110, s->wwn >> 16);
212 put_le16(p + 111, s->wwn);
213 }
214 if (dev && dev->conf.discard_granularity) {
215 put_le16(p + 169, 1); /* TRIM support */
216 }
217 if (dev) {
218 put_le16(p + 217, dev->rotation_rate); /* Nominal media rotation rate */
219 }
220
221 ide_identify_size(s);
222 s->identify_set = 1;
223
224 fill_buffer:
225 memcpy(s->io_buffer, p, sizeof(s->identify_data));
226 }
227
228 static void ide_atapi_identify(IDEState *s)
229 {
230 uint16_t *p;
231
232 p = (uint16_t *)s->identify_data;
233 if (s->identify_set) {
234 goto fill_buffer;
235 }
236 memset(p, 0, sizeof(s->identify_data));
237
238 /* Removable CDROM, 50us response, 12 byte packets */
239 put_le16(p + 0, (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0));
240 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
241 put_le16(p + 20, 3); /* buffer type */
242 put_le16(p + 21, 512); /* cache size in sectors */
243 put_le16(p + 22, 4); /* ecc bytes */
244 padstr((char *)(p + 23), s->version, 8); /* firmware version */
245 padstr((char *)(p + 27), s->drive_model_str, 40); /* model */
246 put_le16(p + 48, 1); /* dword I/O (XXX: should not be set on CDROM) */
247 #ifdef USE_DMA_CDROM
248 put_le16(p + 49, 1 << 9 | 1 << 8); /* DMA and LBA supported */
249 put_le16(p + 53, 7); /* words 64-70, 54-58, 88 valid */
250 put_le16(p + 62, 7); /* single word dma0-2 supported */
251 put_le16(p + 63, 7); /* mdma0-2 supported */
252 #else
253 put_le16(p + 49, 1 << 9); /* LBA supported, no DMA */
254 put_le16(p + 53, 3); /* words 64-70, 54-58 valid */
255 put_le16(p + 63, 0x103); /* DMA modes XXX: may be incorrect */
256 #endif
257 put_le16(p + 64, 3); /* pio3-4 supported */
258 put_le16(p + 65, 0xb4); /* minimum DMA multiword tx cycle time */
259 put_le16(p + 66, 0xb4); /* recommended DMA multiword tx cycle time */
260 put_le16(p + 67, 0x12c); /* minimum PIO cycle time without flow control */
261 put_le16(p + 68, 0xb4); /* minimum PIO cycle time with IORDY flow control */
262
263 put_le16(p + 71, 30); /* in ns */
264 put_le16(p + 72, 30); /* in ns */
265
266 if (s->ncq_queues) {
267 put_le16(p + 75, s->ncq_queues - 1);
268 /* NCQ supported */
269 put_le16(p + 76, (1 << 8));
270 }
271
272 put_le16(p + 80, 0x1e); /* support up to ATA/ATAPI-4 */
273 if (s->wwn) {
274 put_le16(p + 84, (1 << 8)); /* supports WWN for words 108-111 */
275 put_le16(p + 87, (1 << 8)); /* WWN enabled */
276 }
277
278 #ifdef USE_DMA_CDROM
279 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
280 #endif
281
282 if (s->wwn) {
283 /* LE 16-bit words 111-108 contain 64-bit World Wide Name */
284 put_le16(p + 108, s->wwn >> 48);
285 put_le16(p + 109, s->wwn >> 32);
286 put_le16(p + 110, s->wwn >> 16);
287 put_le16(p + 111, s->wwn);
288 }
289
290 s->identify_set = 1;
291
292 fill_buffer:
293 memcpy(s->io_buffer, p, sizeof(s->identify_data));
294 }
295
296 static void ide_cfata_identify_size(IDEState *s)
297 {
298 uint16_t *p = (uint16_t *)s->identify_data;
299 put_le16(p + 7, s->nb_sectors >> 16); /* Sectors per card */
300 put_le16(p + 8, s->nb_sectors); /* Sectors per card */
301 put_le16(p + 60, s->nb_sectors); /* Total LBA sectors */
302 put_le16(p + 61, s->nb_sectors >> 16); /* Total LBA sectors */
303 }
304
305 static void ide_cfata_identify(IDEState *s)
306 {
307 uint16_t *p;
308 uint32_t cur_sec;
309
310 p = (uint16_t *)s->identify_data;
311 if (s->identify_set) {
312 goto fill_buffer;
313 }
314 memset(p, 0, sizeof(s->identify_data));
315
316 cur_sec = s->cylinders * s->heads * s->sectors;
317
318 put_le16(p + 0, 0x848a); /* CF Storage Card signature */
319 put_le16(p + 1, s->cylinders); /* Default cylinders */
320 put_le16(p + 3, s->heads); /* Default heads */
321 put_le16(p + 6, s->sectors); /* Default sectors per track */
322 /* *(p + 7) := nb_sectors >> 16 -- see ide_cfata_identify_size */
323 /* *(p + 8) := nb_sectors -- see ide_cfata_identify_size */
324 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
325 put_le16(p + 22, 0x0004); /* ECC bytes */
326 padstr((char *) (p + 23), s->version, 8); /* Firmware Revision */
327 padstr((char *) (p + 27), s->drive_model_str, 40);/* Model number */
328 #if MAX_MULT_SECTORS > 1
329 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
330 #else
331 put_le16(p + 47, 0x0000);
332 #endif
333 put_le16(p + 49, 0x0f00); /* Capabilities */
334 put_le16(p + 51, 0x0002); /* PIO cycle timing mode */
335 put_le16(p + 52, 0x0001); /* DMA cycle timing mode */
336 put_le16(p + 53, 0x0003); /* Translation params valid */
337 put_le16(p + 54, s->cylinders); /* Current cylinders */
338 put_le16(p + 55, s->heads); /* Current heads */
339 put_le16(p + 56, s->sectors); /* Current sectors */
340 put_le16(p + 57, cur_sec); /* Current capacity */
341 put_le16(p + 58, cur_sec >> 16); /* Current capacity */
342 if (s->mult_sectors) /* Multiple sector setting */
343 put_le16(p + 59, 0x100 | s->mult_sectors);
344 /* *(p + 60) := nb_sectors -- see ide_cfata_identify_size */
345 /* *(p + 61) := nb_sectors >> 16 -- see ide_cfata_identify_size */
346 put_le16(p + 63, 0x0203); /* Multiword DMA capability */
347 put_le16(p + 64, 0x0001); /* Flow Control PIO support */
348 put_le16(p + 65, 0x0096); /* Min. Multiword DMA cycle */
349 put_le16(p + 66, 0x0096); /* Rec. Multiword DMA cycle */
350 put_le16(p + 68, 0x00b4); /* Min. PIO cycle time */
351 put_le16(p + 82, 0x400c); /* Command Set supported */
352 put_le16(p + 83, 0x7068); /* Command Set supported */
353 put_le16(p + 84, 0x4000); /* Features supported */
354 put_le16(p + 85, 0x000c); /* Command Set enabled */
355 put_le16(p + 86, 0x7044); /* Command Set enabled */
356 put_le16(p + 87, 0x4000); /* Features enabled */
357 put_le16(p + 91, 0x4060); /* Current APM level */
358 put_le16(p + 129, 0x0002); /* Current features option */
359 put_le16(p + 130, 0x0005); /* Reassigned sectors */
360 put_le16(p + 131, 0x0001); /* Initial power mode */
361 put_le16(p + 132, 0x0000); /* User signature */
362 put_le16(p + 160, 0x8100); /* Power requirement */
363 put_le16(p + 161, 0x8001); /* CF command set */
364
365 ide_cfata_identify_size(s);
366 s->identify_set = 1;
367
368 fill_buffer:
369 memcpy(s->io_buffer, p, sizeof(s->identify_data));
370 }
371
372 static void ide_set_signature(IDEState *s)
373 {
374 s->select &= ~(ATA_DEV_HS); /* clear head */
375 /* put signature */
376 s->nsector = 1;
377 s->sector = 1;
378 if (s->drive_kind == IDE_CD) {
379 s->lcyl = 0x14;
380 s->hcyl = 0xeb;
381 } else if (s->blk) {
382 s->lcyl = 0;
383 s->hcyl = 0;
384 } else {
385 s->lcyl = 0xff;
386 s->hcyl = 0xff;
387 }
388 }
389
390 static bool ide_sect_range_ok(IDEState *s,
391 uint64_t sector, uint64_t nb_sectors)
392 {
393 uint64_t total_sectors;
394
395 blk_get_geometry(s->blk, &total_sectors);
396 if (sector > total_sectors || nb_sectors > total_sectors - sector) {
397 return false;
398 }
399 return true;
400 }
401
402 typedef struct TrimAIOCB {
403 BlockAIOCB common;
404 IDEState *s;
405 QEMUBH *bh;
406 int ret;
407 QEMUIOVector *qiov;
408 BlockAIOCB *aiocb;
409 int i, j;
410 } TrimAIOCB;
411
412 static void trim_aio_cancel(BlockAIOCB *acb)
413 {
414 TrimAIOCB *iocb = container_of(acb, TrimAIOCB, common);
415
416 /* Exit the loop so ide_issue_trim_cb will not continue */
417 iocb->j = iocb->qiov->niov - 1;
418 iocb->i = (iocb->qiov->iov[iocb->j].iov_len / 8) - 1;
419
420 iocb->ret = -ECANCELED;
421
422 if (iocb->aiocb) {
423 blk_aio_cancel_async(iocb->aiocb);
424 iocb->aiocb = NULL;
425 }
426 }
427
428 static const AIOCBInfo trim_aiocb_info = {
429 .aiocb_size = sizeof(TrimAIOCB),
430 .cancel_async = trim_aio_cancel,
431 };
432
433 static void ide_trim_bh_cb(void *opaque)
434 {
435 TrimAIOCB *iocb = opaque;
436
437 iocb->common.cb(iocb->common.opaque, iocb->ret);
438
439 qemu_bh_delete(iocb->bh);
440 iocb->bh = NULL;
441 qemu_aio_unref(iocb);
442 }
443
444 static void ide_issue_trim_cb(void *opaque, int ret)
445 {
446 TrimAIOCB *iocb = opaque;
447 IDEState *s = iocb->s;
448
449 if (iocb->i >= 0) {
450 if (ret >= 0) {
451 block_acct_done(blk_get_stats(s->blk), &s->acct);
452 } else {
453 block_acct_failed(blk_get_stats(s->blk), &s->acct);
454 }
455 }
456
457 if (ret >= 0) {
458 while (iocb->j < iocb->qiov->niov) {
459 int j = iocb->j;
460 while (++iocb->i < iocb->qiov->iov[j].iov_len / 8) {
461 int i = iocb->i;
462 uint64_t *buffer = iocb->qiov->iov[j].iov_base;
463
464 /* 6-byte LBA + 2-byte range per entry */
465 uint64_t entry = le64_to_cpu(buffer[i]);
466 uint64_t sector = entry & 0x0000ffffffffffffULL;
467 uint16_t count = entry >> 48;
468
469 if (count == 0) {
470 continue;
471 }
472
473 if (!ide_sect_range_ok(s, sector, count)) {
474 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_UNMAP);
475 iocb->ret = -EINVAL;
476 goto done;
477 }
478
479 block_acct_start(blk_get_stats(s->blk), &s->acct,
480 count << BDRV_SECTOR_BITS, BLOCK_ACCT_UNMAP);
481
482 /* Got an entry! Submit and exit. */
483 iocb->aiocb = blk_aio_pdiscard(s->blk,
484 sector << BDRV_SECTOR_BITS,
485 count << BDRV_SECTOR_BITS,
486 ide_issue_trim_cb, opaque);
487 return;
488 }
489
490 iocb->j++;
491 iocb->i = -1;
492 }
493 } else {
494 iocb->ret = ret;
495 }
496
497 done:
498 iocb->aiocb = NULL;
499 if (iocb->bh) {
500 replay_bh_schedule_event(iocb->bh);
501 }
502 }
503
504 BlockAIOCB *ide_issue_trim(
505 int64_t offset, QEMUIOVector *qiov,
506 BlockCompletionFunc *cb, void *cb_opaque, void *opaque)
507 {
508 IDEState *s = opaque;
509 TrimAIOCB *iocb;
510
511 iocb = blk_aio_get(&trim_aiocb_info, s->blk, cb, cb_opaque);
512 iocb->s = s;
513 iocb->bh = qemu_bh_new(ide_trim_bh_cb, iocb);
514 iocb->ret = 0;
515 iocb->qiov = qiov;
516 iocb->i = -1;
517 iocb->j = 0;
518 ide_issue_trim_cb(iocb, 0);
519 return &iocb->common;
520 }
521
522 void ide_abort_command(IDEState *s)
523 {
524 ide_transfer_stop(s);
525 s->status = READY_STAT | ERR_STAT;
526 s->error = ABRT_ERR;
527 }
528
529 static void ide_set_retry(IDEState *s)
530 {
531 s->bus->retry_unit = s->unit;
532 s->bus->retry_sector_num = ide_get_sector(s);
533 s->bus->retry_nsector = s->nsector;
534 }
535
536 static void ide_clear_retry(IDEState *s)
537 {
538 s->bus->retry_unit = -1;
539 s->bus->retry_sector_num = 0;
540 s->bus->retry_nsector = 0;
541 }
542
543 /* prepare data transfer and tell what to do after */
544 bool ide_transfer_start_norecurse(IDEState *s, uint8_t *buf, int size,
545 EndTransferFunc *end_transfer_func)
546 {
547 s->data_ptr = buf;
548 s->data_end = buf + size;
549 ide_set_retry(s);
550 if (!(s->status & ERR_STAT)) {
551 s->status |= DRQ_STAT;
552 }
553 if (!s->bus->dma->ops->pio_transfer) {
554 s->end_transfer_func = end_transfer_func;
555 return false;
556 }
557 s->bus->dma->ops->pio_transfer(s->bus->dma);
558 return true;
559 }
560
561 void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
562 EndTransferFunc *end_transfer_func)
563 {
564 if (ide_transfer_start_norecurse(s, buf, size, end_transfer_func)) {
565 end_transfer_func(s);
566 }
567 }
568
569 static void ide_cmd_done(IDEState *s)
570 {
571 if (s->bus->dma->ops->cmd_done) {
572 s->bus->dma->ops->cmd_done(s->bus->dma);
573 }
574 }
575
576 static void ide_transfer_halt(IDEState *s)
577 {
578 s->end_transfer_func = ide_transfer_stop;
579 s->data_ptr = s->io_buffer;
580 s->data_end = s->io_buffer;
581 s->status &= ~DRQ_STAT;
582 }
583
584 void ide_transfer_stop(IDEState *s)
585 {
586 ide_transfer_halt(s);
587 ide_cmd_done(s);
588 }
589
590 int64_t ide_get_sector(IDEState *s)
591 {
592 int64_t sector_num;
593 if (s->select & (ATA_DEV_LBA)) {
594 if (s->lba48) {
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;
600 } else {
601 /* LBA28 */
602 sector_num = ((s->select & (ATA_DEV_LBA_MSB)) << 24) |
603 (s->hcyl << 16) | (s->lcyl << 8) | s->sector;
604 }
605 } else {
606 /* CHS */
607 sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
608 (s->select & (ATA_DEV_HS)) * s->sectors + (s->sector - 1);
609 }
610
611 return sector_num;
612 }
613
614 void ide_set_sector(IDEState *s, int64_t sector_num)
615 {
616 unsigned int cyl, r;
617 if (s->select & (ATA_DEV_LBA)) {
618 if (s->lba48) {
619 s->sector = sector_num;
620 s->lcyl = sector_num >> 8;
621 s->hcyl = sector_num >> 16;
622 s->hob_sector = sector_num >> 24;
623 s->hob_lcyl = sector_num >> 32;
624 s->hob_hcyl = sector_num >> 40;
625 } else {
626 /* LBA28 */
627 s->select = (s->select & ~(ATA_DEV_LBA_MSB)) |
628 ((sector_num >> 24) & (ATA_DEV_LBA_MSB));
629 s->hcyl = (sector_num >> 16);
630 s->lcyl = (sector_num >> 8);
631 s->sector = (sector_num);
632 }
633 } else {
634 /* CHS */
635 cyl = sector_num / (s->heads * s->sectors);
636 r = sector_num % (s->heads * s->sectors);
637 s->hcyl = cyl >> 8;
638 s->lcyl = cyl;
639 s->select = (s->select & ~(ATA_DEV_HS)) |
640 ((r / s->sectors) & (ATA_DEV_HS));
641 s->sector = (r % s->sectors) + 1;
642 }
643 }
644
645 static void ide_rw_error(IDEState *s) {
646 ide_abort_command(s);
647 ide_set_irq(s->bus);
648 }
649
650 static void ide_buffered_readv_cb(void *opaque, int ret)
651 {
652 IDEBufferedRequest *req = opaque;
653 if (!req->orphaned) {
654 if (!ret) {
655 assert(req->qiov.size == req->original_qiov->size);
656 qemu_iovec_from_buf(req->original_qiov, 0,
657 req->qiov.local_iov.iov_base,
658 req->original_qiov->size);
659 }
660 req->original_cb(req->original_opaque, ret);
661 }
662 QLIST_REMOVE(req, list);
663 qemu_vfree(qemu_iovec_buf(&req->qiov));
664 g_free(req);
665 }
666
667 #define MAX_BUFFERED_REQS 16
668
669 BlockAIOCB *ide_buffered_readv(IDEState *s, int64_t sector_num,
670 QEMUIOVector *iov, int nb_sectors,
671 BlockCompletionFunc *cb, void *opaque)
672 {
673 BlockAIOCB *aioreq;
674 IDEBufferedRequest *req;
675 int c = 0;
676
677 QLIST_FOREACH(req, &s->buffered_requests, list) {
678 c++;
679 }
680 if (c > MAX_BUFFERED_REQS) {
681 return blk_abort_aio_request(s->blk, cb, opaque, -EIO);
682 }
683
684 req = g_new0(IDEBufferedRequest, 1);
685 req->original_qiov = iov;
686 req->original_cb = cb;
687 req->original_opaque = opaque;
688 qemu_iovec_init_buf(&req->qiov, blk_blockalign(s->blk, iov->size),
689 iov->size);
690
691 aioreq = blk_aio_preadv(s->blk, sector_num << BDRV_SECTOR_BITS,
692 &req->qiov, 0, ide_buffered_readv_cb, req);
693
694 QLIST_INSERT_HEAD(&s->buffered_requests, req, list);
695 return aioreq;
696 }
697
698 /**
699 * Cancel all pending DMA requests.
700 * Any buffered DMA requests are instantly canceled,
701 * but any pending unbuffered DMA requests must be waited on.
702 */
703 void ide_cancel_dma_sync(IDEState *s)
704 {
705 IDEBufferedRequest *req;
706
707 /* First invoke the callbacks of all buffered requests
708 * and flag those requests as orphaned. Ideally there
709 * are no unbuffered (Scatter Gather DMA Requests or
710 * write requests) pending and we can avoid to drain. */
711 QLIST_FOREACH(req, &s->buffered_requests, list) {
712 if (!req->orphaned) {
713 trace_ide_cancel_dma_sync_buffered(req->original_cb, req);
714 req->original_cb(req->original_opaque, -ECANCELED);
715 }
716 req->orphaned = true;
717 }
718
719 /*
720 * We can't cancel Scatter Gather DMA in the middle of the
721 * operation or a partial (not full) DMA transfer would reach
722 * the storage so we wait for completion instead (we behave
723 * like if the DMA was completed by the time the guest trying
724 * to cancel dma with bmdma_cmd_writeb with BM_CMD_START not
725 * set).
726 *
727 * In the future we'll be able to safely cancel the I/O if the
728 * whole DMA operation will be submitted to disk with a single
729 * aio operation with preadv/pwritev.
730 */
731 if (s->bus->dma->aiocb) {
732 trace_ide_cancel_dma_sync_remaining();
733 blk_drain(s->blk);
734 assert(s->bus->dma->aiocb == NULL);
735 }
736 }
737
738 static void ide_sector_read(IDEState *s);
739
740 static void ide_sector_read_cb(void *opaque, int ret)
741 {
742 IDEState *s = opaque;
743 int n;
744
745 s->pio_aiocb = NULL;
746 s->status &= ~BUSY_STAT;
747
748 if (ret != 0) {
749 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO |
750 IDE_RETRY_READ)) {
751 return;
752 }
753 }
754
755 block_acct_done(blk_get_stats(s->blk), &s->acct);
756
757 n = s->nsector;
758 if (n > s->req_nb_sectors) {
759 n = s->req_nb_sectors;
760 }
761
762 ide_set_sector(s, ide_get_sector(s) + n);
763 s->nsector -= n;
764 /* Allow the guest to read the io_buffer */
765 ide_transfer_start(s, s->io_buffer, n * BDRV_SECTOR_SIZE, ide_sector_read);
766 ide_set_irq(s->bus);
767 }
768
769 static void ide_sector_read(IDEState *s)
770 {
771 int64_t sector_num;
772 int n;
773
774 s->status = READY_STAT | SEEK_STAT;
775 s->error = 0; /* not needed by IDE spec, but needed by Windows */
776 sector_num = ide_get_sector(s);
777 n = s->nsector;
778
779 if (n == 0) {
780 ide_transfer_stop(s);
781 return;
782 }
783
784 s->status |= BUSY_STAT;
785
786 if (n > s->req_nb_sectors) {
787 n = s->req_nb_sectors;
788 }
789
790 trace_ide_sector_read(sector_num, n);
791
792 if (!ide_sect_range_ok(s, sector_num, n)) {
793 ide_rw_error(s);
794 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_READ);
795 return;
796 }
797
798 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
799
800 block_acct_start(blk_get_stats(s->blk), &s->acct,
801 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
802 s->pio_aiocb = ide_buffered_readv(s, sector_num, &s->qiov, n,
803 ide_sector_read_cb, s);
804 }
805
806 void dma_buf_commit(IDEState *s, uint32_t tx_bytes)
807 {
808 if (s->bus->dma->ops->commit_buf) {
809 s->bus->dma->ops->commit_buf(s->bus->dma, tx_bytes);
810 }
811 s->io_buffer_offset += tx_bytes;
812 qemu_sglist_destroy(&s->sg);
813 }
814
815 void ide_set_inactive(IDEState *s, bool more)
816 {
817 s->bus->dma->aiocb = NULL;
818 ide_clear_retry(s);
819 if (s->bus->dma->ops->set_inactive) {
820 s->bus->dma->ops->set_inactive(s->bus->dma, more);
821 }
822 ide_cmd_done(s);
823 }
824
825 void ide_dma_error(IDEState *s)
826 {
827 dma_buf_commit(s, 0);
828 ide_abort_command(s);
829 ide_set_inactive(s, false);
830 ide_set_irq(s->bus);
831 }
832
833 int ide_handle_rw_error(IDEState *s, int error, int op)
834 {
835 bool is_read = (op & IDE_RETRY_READ) != 0;
836 BlockErrorAction action = blk_get_error_action(s->blk, is_read, error);
837
838 if (action == BLOCK_ERROR_ACTION_STOP) {
839 assert(s->bus->retry_unit == s->unit);
840 s->bus->error_status = op;
841 } else if (action == BLOCK_ERROR_ACTION_REPORT) {
842 block_acct_failed(blk_get_stats(s->blk), &s->acct);
843 if (IS_IDE_RETRY_DMA(op)) {
844 ide_dma_error(s);
845 } else if (IS_IDE_RETRY_ATAPI(op)) {
846 ide_atapi_io_error(s, -error);
847 } else {
848 ide_rw_error(s);
849 }
850 }
851 blk_error_action(s->blk, action, is_read, error);
852 return action != BLOCK_ERROR_ACTION_IGNORE;
853 }
854
855 static void ide_dma_cb(void *opaque, int ret)
856 {
857 IDEState *s = opaque;
858 int n;
859 int64_t sector_num;
860 uint64_t offset;
861 bool stay_active = false;
862 int32_t prep_size = 0;
863
864 if (ret == -EINVAL) {
865 ide_dma_error(s);
866 return;
867 }
868
869 if (ret < 0) {
870 if (ide_handle_rw_error(s, -ret, ide_dma_cmd_to_retry(s->dma_cmd))) {
871 s->bus->dma->aiocb = NULL;
872 dma_buf_commit(s, 0);
873 return;
874 }
875 }
876
877 if (s->io_buffer_size > s->nsector * 512) {
878 /*
879 * The PRDs were longer than needed for this request.
880 * The Active bit must remain set after the request completes.
881 */
882 n = s->nsector;
883 stay_active = true;
884 } else {
885 n = s->io_buffer_size >> 9;
886 }
887
888 sector_num = ide_get_sector(s);
889 if (n > 0) {
890 assert(n * 512 == s->sg.size);
891 dma_buf_commit(s, s->sg.size);
892 sector_num += n;
893 ide_set_sector(s, sector_num);
894 s->nsector -= n;
895 }
896
897 /* end of transfer ? */
898 if (s->nsector == 0) {
899 s->status = READY_STAT | SEEK_STAT;
900 ide_set_irq(s->bus);
901 goto eot;
902 }
903
904 /* launch next transfer */
905 n = s->nsector;
906 s->io_buffer_index = 0;
907 s->io_buffer_size = n * 512;
908 prep_size = s->bus->dma->ops->prepare_buf(s->bus->dma, s->io_buffer_size);
909 /* prepare_buf() must succeed and respect the limit */
910 assert(prep_size >= 0 && prep_size <= n * 512);
911
912 /*
913 * Now prep_size stores the number of bytes in the sglist, and
914 * s->io_buffer_size stores the number of bytes described by the PRDs.
915 */
916
917 if (prep_size < n * 512) {
918 /*
919 * The PRDs are too short for this request. Error condition!
920 * Reset the Active bit and don't raise the interrupt.
921 */
922 s->status = READY_STAT | SEEK_STAT;
923 dma_buf_commit(s, 0);
924 goto eot;
925 }
926
927 trace_ide_dma_cb(s, sector_num, n, IDE_DMA_CMD_str(s->dma_cmd));
928
929 if ((s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) &&
930 !ide_sect_range_ok(s, sector_num, n)) {
931 ide_dma_error(s);
932 block_acct_invalid(blk_get_stats(s->blk), s->acct.type);
933 return;
934 }
935
936 offset = sector_num << BDRV_SECTOR_BITS;
937 switch (s->dma_cmd) {
938 case IDE_DMA_READ:
939 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset,
940 BDRV_SECTOR_SIZE, ide_dma_cb, s);
941 break;
942 case IDE_DMA_WRITE:
943 s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset,
944 BDRV_SECTOR_SIZE, ide_dma_cb, s);
945 break;
946 case IDE_DMA_TRIM:
947 s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk),
948 &s->sg, offset, BDRV_SECTOR_SIZE,
949 ide_issue_trim, s, ide_dma_cb, s,
950 DMA_DIRECTION_TO_DEVICE);
951 break;
952 default:
953 abort();
954 }
955 return;
956
957 eot:
958 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
959 block_acct_done(blk_get_stats(s->blk), &s->acct);
960 }
961 ide_set_inactive(s, stay_active);
962 }
963
964 static void ide_sector_start_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
965 {
966 s->status = READY_STAT | SEEK_STAT | DRQ_STAT;
967 s->io_buffer_size = 0;
968 s->dma_cmd = dma_cmd;
969
970 switch (dma_cmd) {
971 case IDE_DMA_READ:
972 block_acct_start(blk_get_stats(s->blk), &s->acct,
973 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
974 break;
975 case IDE_DMA_WRITE:
976 block_acct_start(blk_get_stats(s->blk), &s->acct,
977 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
978 break;
979 default:
980 break;
981 }
982
983 ide_start_dma(s, ide_dma_cb);
984 }
985
986 void ide_start_dma(IDEState *s, BlockCompletionFunc *cb)
987 {
988 s->io_buffer_index = 0;
989 ide_set_retry(s);
990 if (s->bus->dma->ops->start_dma) {
991 s->bus->dma->ops->start_dma(s->bus->dma, s, cb);
992 }
993 }
994
995 static void ide_sector_write(IDEState *s);
996
997 static void ide_sector_write_timer_cb(void *opaque)
998 {
999 IDEState *s = opaque;
1000 ide_set_irq(s->bus);
1001 }
1002
1003 static void ide_sector_write_cb(void *opaque, int ret)
1004 {
1005 IDEState *s = opaque;
1006 int n;
1007
1008 s->pio_aiocb = NULL;
1009 s->status &= ~BUSY_STAT;
1010
1011 if (ret != 0) {
1012 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO)) {
1013 return;
1014 }
1015 }
1016
1017 block_acct_done(blk_get_stats(s->blk), &s->acct);
1018
1019 n = s->nsector;
1020 if (n > s->req_nb_sectors) {
1021 n = s->req_nb_sectors;
1022 }
1023 s->nsector -= n;
1024
1025 ide_set_sector(s, ide_get_sector(s) + n);
1026 if (s->nsector == 0) {
1027 /* no more sectors to write */
1028 ide_transfer_stop(s);
1029 } else {
1030 int n1 = s->nsector;
1031 if (n1 > s->req_nb_sectors) {
1032 n1 = s->req_nb_sectors;
1033 }
1034 ide_transfer_start(s, s->io_buffer, n1 * BDRV_SECTOR_SIZE,
1035 ide_sector_write);
1036 }
1037
1038 if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
1039 /* It seems there is a bug in the Windows 2000 installer HDD
1040 IDE driver which fills the disk with empty logs when the
1041 IDE write IRQ comes too early. This hack tries to correct
1042 that at the expense of slower write performances. Use this
1043 option _only_ to install Windows 2000. You must disable it
1044 for normal use. */
1045 timer_mod(s->sector_write_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1046 (NANOSECONDS_PER_SECOND / 1000));
1047 } else {
1048 ide_set_irq(s->bus);
1049 }
1050 }
1051
1052 static void ide_sector_write(IDEState *s)
1053 {
1054 int64_t sector_num;
1055 int n;
1056
1057 s->status = READY_STAT | SEEK_STAT | BUSY_STAT;
1058 sector_num = ide_get_sector(s);
1059
1060 n = s->nsector;
1061 if (n > s->req_nb_sectors) {
1062 n = s->req_nb_sectors;
1063 }
1064
1065 trace_ide_sector_write(sector_num, n);
1066
1067 if (!ide_sect_range_ok(s, sector_num, n)) {
1068 ide_rw_error(s);
1069 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_WRITE);
1070 return;
1071 }
1072
1073 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
1074
1075 block_acct_start(blk_get_stats(s->blk), &s->acct,
1076 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
1077 s->pio_aiocb = blk_aio_pwritev(s->blk, sector_num << BDRV_SECTOR_BITS,
1078 &s->qiov, 0, ide_sector_write_cb, s);
1079 }
1080
1081 static void ide_flush_cb(void *opaque, int ret)
1082 {
1083 IDEState *s = opaque;
1084
1085 s->pio_aiocb = NULL;
1086
1087 if (ret < 0) {
1088 /* XXX: What sector number to set here? */
1089 if (ide_handle_rw_error(s, -ret, IDE_RETRY_FLUSH)) {
1090 return;
1091 }
1092 }
1093
1094 if (s->blk) {
1095 block_acct_done(blk_get_stats(s->blk), &s->acct);
1096 }
1097 s->status = READY_STAT | SEEK_STAT;
1098 ide_cmd_done(s);
1099 ide_set_irq(s->bus);
1100 }
1101
1102 static void ide_flush_cache(IDEState *s)
1103 {
1104 if (s->blk == NULL) {
1105 ide_flush_cb(s, 0);
1106 return;
1107 }
1108
1109 s->status |= BUSY_STAT;
1110 ide_set_retry(s);
1111 block_acct_start(blk_get_stats(s->blk), &s->acct, 0, BLOCK_ACCT_FLUSH);
1112 s->pio_aiocb = blk_aio_flush(s->blk, ide_flush_cb, s);
1113 }
1114
1115 static void ide_cfata_metadata_inquiry(IDEState *s)
1116 {
1117 uint16_t *p;
1118 uint32_t spd;
1119
1120 p = (uint16_t *) s->io_buffer;
1121 memset(p, 0, 0x200);
1122 spd = ((s->mdata_size - 1) >> 9) + 1;
1123
1124 put_le16(p + 0, 0x0001); /* Data format revision */
1125 put_le16(p + 1, 0x0000); /* Media property: silicon */
1126 put_le16(p + 2, s->media_changed); /* Media status */
1127 put_le16(p + 3, s->mdata_size & 0xffff); /* Capacity in bytes (low) */
1128 put_le16(p + 4, s->mdata_size >> 16); /* Capacity in bytes (high) */
1129 put_le16(p + 5, spd & 0xffff); /* Sectors per device (low) */
1130 put_le16(p + 6, spd >> 16); /* Sectors per device (high) */
1131 }
1132
1133 static void ide_cfata_metadata_read(IDEState *s)
1134 {
1135 uint16_t *p;
1136
1137 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1138 s->status = ERR_STAT;
1139 s->error = ABRT_ERR;
1140 return;
1141 }
1142
1143 p = (uint16_t *) s->io_buffer;
1144 memset(p, 0, 0x200);
1145
1146 put_le16(p + 0, s->media_changed); /* Media status */
1147 memcpy(p + 1, s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1148 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1149 s->nsector << 9), 0x200 - 2));
1150 }
1151
1152 static void ide_cfata_metadata_write(IDEState *s)
1153 {
1154 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1155 s->status = ERR_STAT;
1156 s->error = ABRT_ERR;
1157 return;
1158 }
1159
1160 s->media_changed = 0;
1161
1162 memcpy(s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1163 s->io_buffer + 2,
1164 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1165 s->nsector << 9), 0x200 - 2));
1166 }
1167
1168 /* called when the inserted state of the media has changed */
1169 static void ide_cd_change_cb(void *opaque, bool load, Error **errp)
1170 {
1171 IDEState *s = opaque;
1172 uint64_t nb_sectors;
1173
1174 s->tray_open = !load;
1175 blk_get_geometry(s->blk, &nb_sectors);
1176 s->nb_sectors = nb_sectors;
1177
1178 /*
1179 * First indicate to the guest that a CD has been removed. That's
1180 * done on the next command the guest sends us.
1181 *
1182 * Then we set UNIT_ATTENTION, by which the guest will
1183 * detect a new CD in the drive. See ide_atapi_cmd() for details.
1184 */
1185 s->cdrom_changed = 1;
1186 s->events.new_media = true;
1187 s->events.eject_request = false;
1188 ide_set_irq(s->bus);
1189 }
1190
1191 static void ide_cd_eject_request_cb(void *opaque, bool force)
1192 {
1193 IDEState *s = opaque;
1194
1195 s->events.eject_request = true;
1196 if (force) {
1197 s->tray_locked = false;
1198 }
1199 ide_set_irq(s->bus);
1200 }
1201
1202 static void ide_cmd_lba48_transform(IDEState *s, int lba48)
1203 {
1204 s->lba48 = lba48;
1205
1206 /* handle the 'magic' 0 nsector count conversion here. to avoid
1207 * fiddling with the rest of the read logic, we just store the
1208 * full sector count in ->nsector and ignore ->hob_nsector from now
1209 */
1210 if (!s->lba48) {
1211 if (!s->nsector)
1212 s->nsector = 256;
1213 } else {
1214 if (!s->nsector && !s->hob_nsector)
1215 s->nsector = 65536;
1216 else {
1217 int lo = s->nsector;
1218 int hi = s->hob_nsector;
1219
1220 s->nsector = (hi << 8) | lo;
1221 }
1222 }
1223 }
1224
1225 static void ide_clear_hob(IDEBus *bus)
1226 {
1227 /* any write clears HOB high bit of device control register */
1228 bus->cmd &= ~(IDE_CTRL_HOB);
1229 }
1230
1231 /* IOport [W]rite [R]egisters */
1232 enum ATA_IOPORT_WR {
1233 ATA_IOPORT_WR_DATA = 0,
1234 ATA_IOPORT_WR_FEATURES = 1,
1235 ATA_IOPORT_WR_SECTOR_COUNT = 2,
1236 ATA_IOPORT_WR_SECTOR_NUMBER = 3,
1237 ATA_IOPORT_WR_CYLINDER_LOW = 4,
1238 ATA_IOPORT_WR_CYLINDER_HIGH = 5,
1239 ATA_IOPORT_WR_DEVICE_HEAD = 6,
1240 ATA_IOPORT_WR_COMMAND = 7,
1241 ATA_IOPORT_WR_NUM_REGISTERS,
1242 };
1243
1244 const char *ATA_IOPORT_WR_lookup[ATA_IOPORT_WR_NUM_REGISTERS] = {
1245 [ATA_IOPORT_WR_DATA] = "Data",
1246 [ATA_IOPORT_WR_FEATURES] = "Features",
1247 [ATA_IOPORT_WR_SECTOR_COUNT] = "Sector Count",
1248 [ATA_IOPORT_WR_SECTOR_NUMBER] = "Sector Number",
1249 [ATA_IOPORT_WR_CYLINDER_LOW] = "Cylinder Low",
1250 [ATA_IOPORT_WR_CYLINDER_HIGH] = "Cylinder High",
1251 [ATA_IOPORT_WR_DEVICE_HEAD] = "Device/Head",
1252 [ATA_IOPORT_WR_COMMAND] = "Command"
1253 };
1254
1255 void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
1256 {
1257 IDEBus *bus = opaque;
1258 IDEState *s = idebus_active_if(bus);
1259 int reg_num = addr & 7;
1260
1261 trace_ide_ioport_write(addr, ATA_IOPORT_WR_lookup[reg_num], val, bus, s);
1262
1263 /* ignore writes to command block while busy with previous command */
1264 if (reg_num != 7 && (s->status & (BUSY_STAT|DRQ_STAT))) {
1265 return;
1266 }
1267
1268 /* NOTE: Device0 and Device1 both receive incoming register writes.
1269 * (They're on the same bus! They have to!) */
1270
1271 switch (reg_num) {
1272 case 0:
1273 break;
1274 case ATA_IOPORT_WR_FEATURES:
1275 ide_clear_hob(bus);
1276 bus->ifs[0].hob_feature = bus->ifs[0].feature;
1277 bus->ifs[1].hob_feature = bus->ifs[1].feature;
1278 bus->ifs[0].feature = val;
1279 bus->ifs[1].feature = val;
1280 break;
1281 case ATA_IOPORT_WR_SECTOR_COUNT:
1282 ide_clear_hob(bus);
1283 bus->ifs[0].hob_nsector = bus->ifs[0].nsector;
1284 bus->ifs[1].hob_nsector = bus->ifs[1].nsector;
1285 bus->ifs[0].nsector = val;
1286 bus->ifs[1].nsector = val;
1287 break;
1288 case ATA_IOPORT_WR_SECTOR_NUMBER:
1289 ide_clear_hob(bus);
1290 bus->ifs[0].hob_sector = bus->ifs[0].sector;
1291 bus->ifs[1].hob_sector = bus->ifs[1].sector;
1292 bus->ifs[0].sector = val;
1293 bus->ifs[1].sector = val;
1294 break;
1295 case ATA_IOPORT_WR_CYLINDER_LOW:
1296 ide_clear_hob(bus);
1297 bus->ifs[0].hob_lcyl = bus->ifs[0].lcyl;
1298 bus->ifs[1].hob_lcyl = bus->ifs[1].lcyl;
1299 bus->ifs[0].lcyl = val;
1300 bus->ifs[1].lcyl = val;
1301 break;
1302 case ATA_IOPORT_WR_CYLINDER_HIGH:
1303 ide_clear_hob(bus);
1304 bus->ifs[0].hob_hcyl = bus->ifs[0].hcyl;
1305 bus->ifs[1].hob_hcyl = bus->ifs[1].hcyl;
1306 bus->ifs[0].hcyl = val;
1307 bus->ifs[1].hcyl = val;
1308 break;
1309 case ATA_IOPORT_WR_DEVICE_HEAD:
1310 ide_clear_hob(bus);
1311 bus->ifs[0].select = val | (ATA_DEV_ALWAYS_ON);
1312 bus->ifs[1].select = val | (ATA_DEV_ALWAYS_ON);
1313 /* select drive */
1314 bus->unit = (val & (ATA_DEV_SELECT)) ? 1 : 0;
1315 break;
1316 default:
1317 case ATA_IOPORT_WR_COMMAND:
1318 ide_clear_hob(bus);
1319 qemu_irq_lower(bus->irq);
1320 ide_exec_cmd(bus, val);
1321 break;
1322 }
1323 }
1324
1325 static void ide_reset(IDEState *s)
1326 {
1327 trace_ide_reset(s);
1328
1329 if (s->pio_aiocb) {
1330 blk_aio_cancel(s->pio_aiocb);
1331 s->pio_aiocb = NULL;
1332 }
1333
1334 if (s->drive_kind == IDE_CFATA)
1335 s->mult_sectors = 0;
1336 else
1337 s->mult_sectors = MAX_MULT_SECTORS;
1338 /* ide regs */
1339 s->feature = 0;
1340 s->error = 0;
1341 s->nsector = 0;
1342 s->sector = 0;
1343 s->lcyl = 0;
1344 s->hcyl = 0;
1345
1346 /* lba48 */
1347 s->hob_feature = 0;
1348 s->hob_sector = 0;
1349 s->hob_nsector = 0;
1350 s->hob_lcyl = 0;
1351 s->hob_hcyl = 0;
1352
1353 s->select = (ATA_DEV_ALWAYS_ON);
1354 s->status = READY_STAT | SEEK_STAT;
1355
1356 s->lba48 = 0;
1357
1358 /* ATAPI specific */
1359 s->sense_key = 0;
1360 s->asc = 0;
1361 s->cdrom_changed = 0;
1362 s->packet_transfer_size = 0;
1363 s->elementary_transfer_size = 0;
1364 s->io_buffer_index = 0;
1365 s->cd_sector_size = 0;
1366 s->atapi_dma = 0;
1367 s->tray_locked = 0;
1368 s->tray_open = 0;
1369 /* ATA DMA state */
1370 s->io_buffer_size = 0;
1371 s->req_nb_sectors = 0;
1372
1373 ide_set_signature(s);
1374 /* init the transfer handler so that 0xffff is returned on data
1375 accesses */
1376 s->end_transfer_func = ide_dummy_transfer_stop;
1377 ide_dummy_transfer_stop(s);
1378 s->media_changed = 0;
1379 }
1380
1381 static bool cmd_nop(IDEState *s, uint8_t cmd)
1382 {
1383 return true;
1384 }
1385
1386 static bool cmd_device_reset(IDEState *s, uint8_t cmd)
1387 {
1388 /* Halt PIO (in the DRQ phase), then DMA */
1389 ide_transfer_halt(s);
1390 ide_cancel_dma_sync(s);
1391
1392 /* Reset any PIO commands, reset signature, etc */
1393 ide_reset(s);
1394
1395 /* RESET: ATA8-ACS3 7.10.4 "Normal Outputs";
1396 * ATA8-ACS3 Table 184 "Device Signatures for Normal Output" */
1397 s->status = 0x00;
1398
1399 /* Do not overwrite status register */
1400 return false;
1401 }
1402
1403 static bool cmd_data_set_management(IDEState *s, uint8_t cmd)
1404 {
1405 switch (s->feature) {
1406 case DSM_TRIM:
1407 if (s->blk) {
1408 ide_sector_start_dma(s, IDE_DMA_TRIM);
1409 return false;
1410 }
1411 break;
1412 }
1413
1414 ide_abort_command(s);
1415 return true;
1416 }
1417
1418 static bool cmd_identify(IDEState *s, uint8_t cmd)
1419 {
1420 if (s->blk && s->drive_kind != IDE_CD) {
1421 if (s->drive_kind != IDE_CFATA) {
1422 ide_identify(s);
1423 } else {
1424 ide_cfata_identify(s);
1425 }
1426 s->status = READY_STAT | SEEK_STAT;
1427 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1428 ide_set_irq(s->bus);
1429 return false;
1430 } else {
1431 if (s->drive_kind == IDE_CD) {
1432 ide_set_signature(s);
1433 }
1434 ide_abort_command(s);
1435 }
1436
1437 return true;
1438 }
1439
1440 static bool cmd_verify(IDEState *s, uint8_t cmd)
1441 {
1442 bool lba48 = (cmd == WIN_VERIFY_EXT);
1443
1444 /* do sector number check ? */
1445 ide_cmd_lba48_transform(s, lba48);
1446
1447 return true;
1448 }
1449
1450 static bool cmd_set_multiple_mode(IDEState *s, uint8_t cmd)
1451 {
1452 if (s->drive_kind == IDE_CFATA && s->nsector == 0) {
1453 /* Disable Read and Write Multiple */
1454 s->mult_sectors = 0;
1455 } else if ((s->nsector & 0xff) != 0 &&
1456 ((s->nsector & 0xff) > MAX_MULT_SECTORS ||
1457 (s->nsector & (s->nsector - 1)) != 0)) {
1458 ide_abort_command(s);
1459 } else {
1460 s->mult_sectors = s->nsector & 0xff;
1461 }
1462
1463 return true;
1464 }
1465
1466 static bool cmd_read_multiple(IDEState *s, uint8_t cmd)
1467 {
1468 bool lba48 = (cmd == WIN_MULTREAD_EXT);
1469
1470 if (!s->blk || !s->mult_sectors) {
1471 ide_abort_command(s);
1472 return true;
1473 }
1474
1475 ide_cmd_lba48_transform(s, lba48);
1476 s->req_nb_sectors = s->mult_sectors;
1477 ide_sector_read(s);
1478 return false;
1479 }
1480
1481 static bool cmd_write_multiple(IDEState *s, uint8_t cmd)
1482 {
1483 bool lba48 = (cmd == WIN_MULTWRITE_EXT);
1484 int n;
1485
1486 if (!s->blk || !s->mult_sectors) {
1487 ide_abort_command(s);
1488 return true;
1489 }
1490
1491 ide_cmd_lba48_transform(s, lba48);
1492
1493 s->req_nb_sectors = s->mult_sectors;
1494 n = MIN(s->nsector, s->req_nb_sectors);
1495
1496 s->status = SEEK_STAT | READY_STAT;
1497 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
1498
1499 s->media_changed = 1;
1500
1501 return false;
1502 }
1503
1504 static bool cmd_read_pio(IDEState *s, uint8_t cmd)
1505 {
1506 bool lba48 = (cmd == WIN_READ_EXT);
1507
1508 if (s->drive_kind == IDE_CD) {
1509 ide_set_signature(s); /* odd, but ATA4 8.27.5.2 requires it */
1510 ide_abort_command(s);
1511 return true;
1512 }
1513
1514 if (!s->blk) {
1515 ide_abort_command(s);
1516 return true;
1517 }
1518
1519 ide_cmd_lba48_transform(s, lba48);
1520 s->req_nb_sectors = 1;
1521 ide_sector_read(s);
1522
1523 return false;
1524 }
1525
1526 static bool cmd_write_pio(IDEState *s, uint8_t cmd)
1527 {
1528 bool lba48 = (cmd == WIN_WRITE_EXT);
1529
1530 if (!s->blk) {
1531 ide_abort_command(s);
1532 return true;
1533 }
1534
1535 ide_cmd_lba48_transform(s, lba48);
1536
1537 s->req_nb_sectors = 1;
1538 s->status = SEEK_STAT | READY_STAT;
1539 ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
1540
1541 s->media_changed = 1;
1542
1543 return false;
1544 }
1545
1546 static bool cmd_read_dma(IDEState *s, uint8_t cmd)
1547 {
1548 bool lba48 = (cmd == WIN_READDMA_EXT);
1549
1550 if (!s->blk) {
1551 ide_abort_command(s);
1552 return true;
1553 }
1554
1555 ide_cmd_lba48_transform(s, lba48);
1556 ide_sector_start_dma(s, IDE_DMA_READ);
1557
1558 return false;
1559 }
1560
1561 static bool cmd_write_dma(IDEState *s, uint8_t cmd)
1562 {
1563 bool lba48 = (cmd == WIN_WRITEDMA_EXT);
1564
1565 if (!s->blk) {
1566 ide_abort_command(s);
1567 return true;
1568 }
1569
1570 ide_cmd_lba48_transform(s, lba48);
1571 ide_sector_start_dma(s, IDE_DMA_WRITE);
1572
1573 s->media_changed = 1;
1574
1575 return false;
1576 }
1577
1578 static bool cmd_flush_cache(IDEState *s, uint8_t cmd)
1579 {
1580 ide_flush_cache(s);
1581 return false;
1582 }
1583
1584 static bool cmd_seek(IDEState *s, uint8_t cmd)
1585 {
1586 /* XXX: Check that seek is within bounds */
1587 return true;
1588 }
1589
1590 static bool cmd_read_native_max(IDEState *s, uint8_t cmd)
1591 {
1592 bool lba48 = (cmd == WIN_READ_NATIVE_MAX_EXT);
1593
1594 /* Refuse if no sectors are addressable (e.g. medium not inserted) */
1595 if (s->nb_sectors == 0) {
1596 ide_abort_command(s);
1597 return true;
1598 }
1599
1600 ide_cmd_lba48_transform(s, lba48);
1601 ide_set_sector(s, s->nb_sectors - 1);
1602
1603 return true;
1604 }
1605
1606 static bool cmd_check_power_mode(IDEState *s, uint8_t cmd)
1607 {
1608 s->nsector = 0xff; /* device active or idle */
1609 return true;
1610 }
1611
1612 static bool cmd_set_features(IDEState *s, uint8_t cmd)
1613 {
1614 uint16_t *identify_data;
1615
1616 if (!s->blk) {
1617 ide_abort_command(s);
1618 return true;
1619 }
1620
1621 /* XXX: valid for CDROM ? */
1622 switch (s->feature) {
1623 case 0x02: /* write cache enable */
1624 blk_set_enable_write_cache(s->blk, true);
1625 identify_data = (uint16_t *)s->identify_data;
1626 put_le16(identify_data + 85, (1 << 14) | (1 << 5) | 1);
1627 return true;
1628 case 0x82: /* write cache disable */
1629 blk_set_enable_write_cache(s->blk, false);
1630 identify_data = (uint16_t *)s->identify_data;
1631 put_le16(identify_data + 85, (1 << 14) | 1);
1632 ide_flush_cache(s);
1633 return false;
1634 case 0xcc: /* reverting to power-on defaults enable */
1635 case 0x66: /* reverting to power-on defaults disable */
1636 case 0xaa: /* read look-ahead enable */
1637 case 0x55: /* read look-ahead disable */
1638 case 0x05: /* set advanced power management mode */
1639 case 0x85: /* disable advanced power management mode */
1640 case 0x69: /* NOP */
1641 case 0x67: /* NOP */
1642 case 0x96: /* NOP */
1643 case 0x9a: /* NOP */
1644 case 0x42: /* enable Automatic Acoustic Mode */
1645 case 0xc2: /* disable Automatic Acoustic Mode */
1646 return true;
1647 case 0x03: /* set transfer mode */
1648 {
1649 uint8_t val = s->nsector & 0x07;
1650 identify_data = (uint16_t *)s->identify_data;
1651
1652 switch (s->nsector >> 3) {
1653 case 0x00: /* pio default */
1654 case 0x01: /* pio mode */
1655 put_le16(identify_data + 62, 0x07);
1656 put_le16(identify_data + 63, 0x07);
1657 put_le16(identify_data + 88, 0x3f);
1658 break;
1659 case 0x02: /* sigle word dma mode*/
1660 put_le16(identify_data + 62, 0x07 | (1 << (val + 8)));
1661 put_le16(identify_data + 63, 0x07);
1662 put_le16(identify_data + 88, 0x3f);
1663 break;
1664 case 0x04: /* mdma mode */
1665 put_le16(identify_data + 62, 0x07);
1666 put_le16(identify_data + 63, 0x07 | (1 << (val + 8)));
1667 put_le16(identify_data + 88, 0x3f);
1668 break;
1669 case 0x08: /* udma mode */
1670 put_le16(identify_data + 62, 0x07);
1671 put_le16(identify_data + 63, 0x07);
1672 put_le16(identify_data + 88, 0x3f | (1 << (val + 8)));
1673 break;
1674 default:
1675 goto abort_cmd;
1676 }
1677 return true;
1678 }
1679 }
1680
1681 abort_cmd:
1682 ide_abort_command(s);
1683 return true;
1684 }
1685
1686
1687 /*** ATAPI commands ***/
1688
1689 static bool cmd_identify_packet(IDEState *s, uint8_t cmd)
1690 {
1691 ide_atapi_identify(s);
1692 s->status = READY_STAT | SEEK_STAT;
1693 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1694 ide_set_irq(s->bus);
1695 return false;
1696 }
1697
1698 static bool cmd_exec_dev_diagnostic(IDEState *s, uint8_t cmd)
1699 {
1700 ide_set_signature(s);
1701
1702 if (s->drive_kind == IDE_CD) {
1703 s->status = 0; /* ATAPI spec (v6) section 9.10 defines packet
1704 * devices to return a clear status register
1705 * with READY_STAT *not* set. */
1706 s->error = 0x01;
1707 } else {
1708 s->status = READY_STAT | SEEK_STAT;
1709 /* The bits of the error register are not as usual for this command!
1710 * They are part of the regular output (this is why ERR_STAT isn't set)
1711 * Device 0 passed, Device 1 passed or not present. */
1712 s->error = 0x01;
1713 ide_set_irq(s->bus);
1714 }
1715
1716 return false;
1717 }
1718
1719 static bool cmd_packet(IDEState *s, uint8_t cmd)
1720 {
1721 /* overlapping commands not supported */
1722 if (s->feature & 0x02) {
1723 ide_abort_command(s);
1724 return true;
1725 }
1726
1727 s->status = READY_STAT | SEEK_STAT;
1728 s->atapi_dma = s->feature & 1;
1729 if (s->atapi_dma) {
1730 s->dma_cmd = IDE_DMA_ATAPI;
1731 }
1732 s->nsector = 1;
1733 ide_transfer_start(s, s->io_buffer, ATAPI_PACKET_SIZE,
1734 ide_atapi_cmd);
1735 return false;
1736 }
1737
1738
1739 /*** CF-ATA commands ***/
1740
1741 static bool cmd_cfa_req_ext_error_code(IDEState *s, uint8_t cmd)
1742 {
1743 s->error = 0x09; /* miscellaneous error */
1744 s->status = READY_STAT | SEEK_STAT;
1745 ide_set_irq(s->bus);
1746
1747 return false;
1748 }
1749
1750 static bool cmd_cfa_erase_sectors(IDEState *s, uint8_t cmd)
1751 {
1752 /* WIN_SECURITY_FREEZE_LOCK has the same ID as CFA_WEAR_LEVEL and is
1753 * required for Windows 8 to work with AHCI */
1754
1755 if (cmd == CFA_WEAR_LEVEL) {
1756 s->nsector = 0;
1757 }
1758
1759 if (cmd == CFA_ERASE_SECTORS) {
1760 s->media_changed = 1;
1761 }
1762
1763 return true;
1764 }
1765
1766 static bool cmd_cfa_translate_sector(IDEState *s, uint8_t cmd)
1767 {
1768 s->status = READY_STAT | SEEK_STAT;
1769
1770 memset(s->io_buffer, 0, 0x200);
1771 s->io_buffer[0x00] = s->hcyl; /* Cyl MSB */
1772 s->io_buffer[0x01] = s->lcyl; /* Cyl LSB */
1773 s->io_buffer[0x02] = s->select; /* Head */
1774 s->io_buffer[0x03] = s->sector; /* Sector */
1775 s->io_buffer[0x04] = ide_get_sector(s) >> 16; /* LBA MSB */
1776 s->io_buffer[0x05] = ide_get_sector(s) >> 8; /* LBA */
1777 s->io_buffer[0x06] = ide_get_sector(s) >> 0; /* LBA LSB */
1778 s->io_buffer[0x13] = 0x00; /* Erase flag */
1779 s->io_buffer[0x18] = 0x00; /* Hot count */
1780 s->io_buffer[0x19] = 0x00; /* Hot count */
1781 s->io_buffer[0x1a] = 0x01; /* Hot count */
1782
1783 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1784 ide_set_irq(s->bus);
1785
1786 return false;
1787 }
1788
1789 static bool cmd_cfa_access_metadata_storage(IDEState *s, uint8_t cmd)
1790 {
1791 switch (s->feature) {
1792 case 0x02: /* Inquiry Metadata Storage */
1793 ide_cfata_metadata_inquiry(s);
1794 break;
1795 case 0x03: /* Read Metadata Storage */
1796 ide_cfata_metadata_read(s);
1797 break;
1798 case 0x04: /* Write Metadata Storage */
1799 ide_cfata_metadata_write(s);
1800 break;
1801 default:
1802 ide_abort_command(s);
1803 return true;
1804 }
1805
1806 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1807 s->status = 0x00; /* NOTE: READY is _not_ set */
1808 ide_set_irq(s->bus);
1809
1810 return false;
1811 }
1812
1813 static bool cmd_ibm_sense_condition(IDEState *s, uint8_t cmd)
1814 {
1815 switch (s->feature) {
1816 case 0x01: /* sense temperature in device */
1817 s->nsector = 0x50; /* +20 C */
1818 break;
1819 default:
1820 ide_abort_command(s);
1821 return true;
1822 }
1823
1824 return true;
1825 }
1826
1827
1828 /*** SMART commands ***/
1829
1830 static bool cmd_smart(IDEState *s, uint8_t cmd)
1831 {
1832 int n;
1833
1834 if (s->hcyl != 0xc2 || s->lcyl != 0x4f) {
1835 goto abort_cmd;
1836 }
1837
1838 if (!s->smart_enabled && s->feature != SMART_ENABLE) {
1839 goto abort_cmd;
1840 }
1841
1842 switch (s->feature) {
1843 case SMART_DISABLE:
1844 s->smart_enabled = 0;
1845 return true;
1846
1847 case SMART_ENABLE:
1848 s->smart_enabled = 1;
1849 return true;
1850
1851 case SMART_ATTR_AUTOSAVE:
1852 switch (s->sector) {
1853 case 0x00:
1854 s->smart_autosave = 0;
1855 break;
1856 case 0xf1:
1857 s->smart_autosave = 1;
1858 break;
1859 default:
1860 goto abort_cmd;
1861 }
1862 return true;
1863
1864 case SMART_STATUS:
1865 if (!s->smart_errors) {
1866 s->hcyl = 0xc2;
1867 s->lcyl = 0x4f;
1868 } else {
1869 s->hcyl = 0x2c;
1870 s->lcyl = 0xf4;
1871 }
1872 return true;
1873
1874 case SMART_READ_THRESH:
1875 memset(s->io_buffer, 0, 0x200);
1876 s->io_buffer[0] = 0x01; /* smart struct version */
1877
1878 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1879 s->io_buffer[2 + 0 + (n * 12)] = smart_attributes[n][0];
1880 s->io_buffer[2 + 1 + (n * 12)] = smart_attributes[n][11];
1881 }
1882
1883 /* checksum */
1884 for (n = 0; n < 511; n++) {
1885 s->io_buffer[511] += s->io_buffer[n];
1886 }
1887 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1888
1889 s->status = READY_STAT | SEEK_STAT;
1890 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1891 ide_set_irq(s->bus);
1892 return false;
1893
1894 case SMART_READ_DATA:
1895 memset(s->io_buffer, 0, 0x200);
1896 s->io_buffer[0] = 0x01; /* smart struct version */
1897
1898 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1899 int i;
1900 for (i = 0; i < 11; i++) {
1901 s->io_buffer[2 + i + (n * 12)] = smart_attributes[n][i];
1902 }
1903 }
1904
1905 s->io_buffer[362] = 0x02 | (s->smart_autosave ? 0x80 : 0x00);
1906 if (s->smart_selftest_count == 0) {
1907 s->io_buffer[363] = 0;
1908 } else {
1909 s->io_buffer[363] =
1910 s->smart_selftest_data[3 +
1911 (s->smart_selftest_count - 1) *
1912 24];
1913 }
1914 s->io_buffer[364] = 0x20;
1915 s->io_buffer[365] = 0x01;
1916 /* offline data collection capacity: execute + self-test*/
1917 s->io_buffer[367] = (1 << 4 | 1 << 3 | 1);
1918 s->io_buffer[368] = 0x03; /* smart capability (1) */
1919 s->io_buffer[369] = 0x00; /* smart capability (2) */
1920 s->io_buffer[370] = 0x01; /* error logging supported */
1921 s->io_buffer[372] = 0x02; /* minutes for poll short test */
1922 s->io_buffer[373] = 0x36; /* minutes for poll ext test */
1923 s->io_buffer[374] = 0x01; /* minutes for poll conveyance */
1924
1925 for (n = 0; n < 511; n++) {
1926 s->io_buffer[511] += s->io_buffer[n];
1927 }
1928 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1929
1930 s->status = READY_STAT | SEEK_STAT;
1931 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1932 ide_set_irq(s->bus);
1933 return false;
1934
1935 case SMART_READ_LOG:
1936 switch (s->sector) {
1937 case 0x01: /* summary smart error log */
1938 memset(s->io_buffer, 0, 0x200);
1939 s->io_buffer[0] = 0x01;
1940 s->io_buffer[1] = 0x00; /* no error entries */
1941 s->io_buffer[452] = s->smart_errors & 0xff;
1942 s->io_buffer[453] = (s->smart_errors & 0xff00) >> 8;
1943
1944 for (n = 0; n < 511; n++) {
1945 s->io_buffer[511] += s->io_buffer[n];
1946 }
1947 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1948 break;
1949 case 0x06: /* smart self test log */
1950 memset(s->io_buffer, 0, 0x200);
1951 s->io_buffer[0] = 0x01;
1952 if (s->smart_selftest_count == 0) {
1953 s->io_buffer[508] = 0;
1954 } else {
1955 s->io_buffer[508] = s->smart_selftest_count;
1956 for (n = 2; n < 506; n++) {
1957 s->io_buffer[n] = s->smart_selftest_data[n];
1958 }
1959 }
1960
1961 for (n = 0; n < 511; n++) {
1962 s->io_buffer[511] += s->io_buffer[n];
1963 }
1964 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1965 break;
1966 default:
1967 goto abort_cmd;
1968 }
1969 s->status = READY_STAT | SEEK_STAT;
1970 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1971 ide_set_irq(s->bus);
1972 return false;
1973
1974 case SMART_EXECUTE_OFFLINE:
1975 switch (s->sector) {
1976 case 0: /* off-line routine */
1977 case 1: /* short self test */
1978 case 2: /* extended self test */
1979 s->smart_selftest_count++;
1980 if (s->smart_selftest_count > 21) {
1981 s->smart_selftest_count = 1;
1982 }
1983 n = 2 + (s->smart_selftest_count - 1) * 24;
1984 s->smart_selftest_data[n] = s->sector;
1985 s->smart_selftest_data[n + 1] = 0x00; /* OK and finished */
1986 s->smart_selftest_data[n + 2] = 0x34; /* hour count lsb */
1987 s->smart_selftest_data[n + 3] = 0x12; /* hour count msb */
1988 break;
1989 default:
1990 goto abort_cmd;
1991 }
1992 return true;
1993 }
1994
1995 abort_cmd:
1996 ide_abort_command(s);
1997 return true;
1998 }
1999
2000 #define HD_OK (1u << IDE_HD)
2001 #define CD_OK (1u << IDE_CD)
2002 #define CFA_OK (1u << IDE_CFATA)
2003 #define HD_CFA_OK (HD_OK | CFA_OK)
2004 #define ALL_OK (HD_OK | CD_OK | CFA_OK)
2005
2006 /* Set the Disk Seek Completed status bit during completion */
2007 #define SET_DSC (1u << 8)
2008
2009 /* See ACS-2 T13/2015-D Table B.2 Command codes */
2010 static const struct {
2011 /* Returns true if the completion code should be run */
2012 bool (*handler)(IDEState *s, uint8_t cmd);
2013 int flags;
2014 } ide_cmd_table[0x100] = {
2015 /* NOP not implemented, mandatory for CD */
2016 [CFA_REQ_EXT_ERROR_CODE] = { cmd_cfa_req_ext_error_code, CFA_OK },
2017 [WIN_DSM] = { cmd_data_set_management, HD_CFA_OK },
2018 [WIN_DEVICE_RESET] = { cmd_device_reset, CD_OK },
2019 [WIN_RECAL] = { cmd_nop, HD_CFA_OK | SET_DSC},
2020 [WIN_READ] = { cmd_read_pio, ALL_OK },
2021 [WIN_READ_ONCE] = { cmd_read_pio, HD_CFA_OK },
2022 [WIN_READ_EXT] = { cmd_read_pio, HD_CFA_OK },
2023 [WIN_READDMA_EXT] = { cmd_read_dma, HD_CFA_OK },
2024 [WIN_READ_NATIVE_MAX_EXT] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
2025 [WIN_MULTREAD_EXT] = { cmd_read_multiple, HD_CFA_OK },
2026 [WIN_WRITE] = { cmd_write_pio, HD_CFA_OK },
2027 [WIN_WRITE_ONCE] = { cmd_write_pio, HD_CFA_OK },
2028 [WIN_WRITE_EXT] = { cmd_write_pio, HD_CFA_OK },
2029 [WIN_WRITEDMA_EXT] = { cmd_write_dma, HD_CFA_OK },
2030 [CFA_WRITE_SECT_WO_ERASE] = { cmd_write_pio, CFA_OK },
2031 [WIN_MULTWRITE_EXT] = { cmd_write_multiple, HD_CFA_OK },
2032 [WIN_WRITE_VERIFY] = { cmd_write_pio, HD_CFA_OK },
2033 [WIN_VERIFY] = { cmd_verify, HD_CFA_OK | SET_DSC },
2034 [WIN_VERIFY_ONCE] = { cmd_verify, HD_CFA_OK | SET_DSC },
2035 [WIN_VERIFY_EXT] = { cmd_verify, HD_CFA_OK | SET_DSC },
2036 [WIN_SEEK] = { cmd_seek, HD_CFA_OK | SET_DSC },
2037 [CFA_TRANSLATE_SECTOR] = { cmd_cfa_translate_sector, CFA_OK },
2038 [WIN_DIAGNOSE] = { cmd_exec_dev_diagnostic, ALL_OK },
2039 [WIN_SPECIFY] = { cmd_nop, HD_CFA_OK | SET_DSC },
2040 [WIN_STANDBYNOW2] = { cmd_nop, HD_CFA_OK },
2041 [WIN_IDLEIMMEDIATE2] = { cmd_nop, HD_CFA_OK },
2042 [WIN_STANDBY2] = { cmd_nop, HD_CFA_OK },
2043 [WIN_SETIDLE2] = { cmd_nop, HD_CFA_OK },
2044 [WIN_CHECKPOWERMODE2] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2045 [WIN_SLEEPNOW2] = { cmd_nop, HD_CFA_OK },
2046 [WIN_PACKETCMD] = { cmd_packet, CD_OK },
2047 [WIN_PIDENTIFY] = { cmd_identify_packet, CD_OK },
2048 [WIN_SMART] = { cmd_smart, HD_CFA_OK | SET_DSC },
2049 [CFA_ACCESS_METADATA_STORAGE] = { cmd_cfa_access_metadata_storage, CFA_OK },
2050 [CFA_ERASE_SECTORS] = { cmd_cfa_erase_sectors, CFA_OK | SET_DSC },
2051 [WIN_MULTREAD] = { cmd_read_multiple, HD_CFA_OK },
2052 [WIN_MULTWRITE] = { cmd_write_multiple, HD_CFA_OK },
2053 [WIN_SETMULT] = { cmd_set_multiple_mode, HD_CFA_OK | SET_DSC },
2054 [WIN_READDMA] = { cmd_read_dma, HD_CFA_OK },
2055 [WIN_READDMA_ONCE] = { cmd_read_dma, HD_CFA_OK },
2056 [WIN_WRITEDMA] = { cmd_write_dma, HD_CFA_OK },
2057 [WIN_WRITEDMA_ONCE] = { cmd_write_dma, HD_CFA_OK },
2058 [CFA_WRITE_MULTI_WO_ERASE] = { cmd_write_multiple, CFA_OK },
2059 [WIN_STANDBYNOW1] = { cmd_nop, HD_CFA_OK },
2060 [WIN_IDLEIMMEDIATE] = { cmd_nop, HD_CFA_OK },
2061 [WIN_STANDBY] = { cmd_nop, HD_CFA_OK },
2062 [WIN_SETIDLE1] = { cmd_nop, HD_CFA_OK },
2063 [WIN_CHECKPOWERMODE1] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2064 [WIN_SLEEPNOW1] = { cmd_nop, HD_CFA_OK },
2065 [WIN_FLUSH_CACHE] = { cmd_flush_cache, ALL_OK },
2066 [WIN_FLUSH_CACHE_EXT] = { cmd_flush_cache, HD_CFA_OK },
2067 [WIN_IDENTIFY] = { cmd_identify, ALL_OK },
2068 [WIN_SETFEATURES] = { cmd_set_features, ALL_OK | SET_DSC },
2069 [IBM_SENSE_CONDITION] = { cmd_ibm_sense_condition, CFA_OK | SET_DSC },
2070 [CFA_WEAR_LEVEL] = { cmd_cfa_erase_sectors, HD_CFA_OK | SET_DSC },
2071 [WIN_READ_NATIVE_MAX] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
2072 };
2073
2074 static bool ide_cmd_permitted(IDEState *s, uint32_t cmd)
2075 {
2076 return cmd < ARRAY_SIZE(ide_cmd_table)
2077 && (ide_cmd_table[cmd].flags & (1u << s->drive_kind));
2078 }
2079
2080 void ide_exec_cmd(IDEBus *bus, uint32_t val)
2081 {
2082 IDEState *s;
2083 bool complete;
2084
2085 s = idebus_active_if(bus);
2086 trace_ide_exec_cmd(bus, s, val);
2087
2088 /* ignore commands to non existent slave */
2089 if (s != bus->ifs && !s->blk) {
2090 return;
2091 }
2092
2093 /* Only RESET is allowed while BSY and/or DRQ are set,
2094 * and only to ATAPI devices. */
2095 if (s->status & (BUSY_STAT|DRQ_STAT)) {
2096 if (val != WIN_DEVICE_RESET || s->drive_kind != IDE_CD) {
2097 return;
2098 }
2099 }
2100
2101 if (!ide_cmd_permitted(s, val)) {
2102 ide_abort_command(s);
2103 ide_set_irq(s->bus);
2104 return;
2105 }
2106
2107 s->status = READY_STAT | BUSY_STAT;
2108 s->error = 0;
2109 s->io_buffer_offset = 0;
2110
2111 complete = ide_cmd_table[val].handler(s, val);
2112 if (complete) {
2113 s->status &= ~BUSY_STAT;
2114 assert(!!s->error == !!(s->status & ERR_STAT));
2115
2116 if ((ide_cmd_table[val].flags & SET_DSC) && !s->error) {
2117 s->status |= SEEK_STAT;
2118 }
2119
2120 ide_cmd_done(s);
2121 ide_set_irq(s->bus);
2122 }
2123 }
2124
2125 /* IOport [R]ead [R]egisters */
2126 enum ATA_IOPORT_RR {
2127 ATA_IOPORT_RR_DATA = 0,
2128 ATA_IOPORT_RR_ERROR = 1,
2129 ATA_IOPORT_RR_SECTOR_COUNT = 2,
2130 ATA_IOPORT_RR_SECTOR_NUMBER = 3,
2131 ATA_IOPORT_RR_CYLINDER_LOW = 4,
2132 ATA_IOPORT_RR_CYLINDER_HIGH = 5,
2133 ATA_IOPORT_RR_DEVICE_HEAD = 6,
2134 ATA_IOPORT_RR_STATUS = 7,
2135 ATA_IOPORT_RR_NUM_REGISTERS,
2136 };
2137
2138 const char *ATA_IOPORT_RR_lookup[ATA_IOPORT_RR_NUM_REGISTERS] = {
2139 [ATA_IOPORT_RR_DATA] = "Data",
2140 [ATA_IOPORT_RR_ERROR] = "Error",
2141 [ATA_IOPORT_RR_SECTOR_COUNT] = "Sector Count",
2142 [ATA_IOPORT_RR_SECTOR_NUMBER] = "Sector Number",
2143 [ATA_IOPORT_RR_CYLINDER_LOW] = "Cylinder Low",
2144 [ATA_IOPORT_RR_CYLINDER_HIGH] = "Cylinder High",
2145 [ATA_IOPORT_RR_DEVICE_HEAD] = "Device/Head",
2146 [ATA_IOPORT_RR_STATUS] = "Status"
2147 };
2148
2149 uint32_t ide_ioport_read(void *opaque, uint32_t addr)
2150 {
2151 IDEBus *bus = opaque;
2152 IDEState *s = idebus_active_if(bus);
2153 uint32_t reg_num;
2154 int ret, hob;
2155
2156 reg_num = addr & 7;
2157 hob = bus->cmd & (IDE_CTRL_HOB);
2158 switch (reg_num) {
2159 case ATA_IOPORT_RR_DATA:
2160 ret = 0xff;
2161 break;
2162 case ATA_IOPORT_RR_ERROR:
2163 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2164 (s != bus->ifs && !s->blk)) {
2165 ret = 0;
2166 } else if (!hob) {
2167 ret = s->error;
2168 } else {
2169 ret = s->hob_feature;
2170 }
2171 break;
2172 case ATA_IOPORT_RR_SECTOR_COUNT:
2173 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2174 ret = 0;
2175 } else if (!hob) {
2176 ret = s->nsector & 0xff;
2177 } else {
2178 ret = s->hob_nsector;
2179 }
2180 break;
2181 case ATA_IOPORT_RR_SECTOR_NUMBER:
2182 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2183 ret = 0;
2184 } else if (!hob) {
2185 ret = s->sector;
2186 } else {
2187 ret = s->hob_sector;
2188 }
2189 break;
2190 case ATA_IOPORT_RR_CYLINDER_LOW:
2191 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2192 ret = 0;
2193 } else if (!hob) {
2194 ret = s->lcyl;
2195 } else {
2196 ret = s->hob_lcyl;
2197 }
2198 break;
2199 case ATA_IOPORT_RR_CYLINDER_HIGH:
2200 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2201 ret = 0;
2202 } else if (!hob) {
2203 ret = s->hcyl;
2204 } else {
2205 ret = s->hob_hcyl;
2206 }
2207 break;
2208 case ATA_IOPORT_RR_DEVICE_HEAD:
2209 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2210 ret = 0;
2211 } else {
2212 ret = s->select;
2213 }
2214 break;
2215 default:
2216 case ATA_IOPORT_RR_STATUS:
2217 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2218 (s != bus->ifs && !s->blk)) {
2219 ret = 0;
2220 } else {
2221 ret = s->status;
2222 }
2223 qemu_irq_lower(bus->irq);
2224 break;
2225 }
2226
2227 trace_ide_ioport_read(addr, ATA_IOPORT_RR_lookup[reg_num], ret, bus, s);
2228 return ret;
2229 }
2230
2231 uint32_t ide_status_read(void *opaque, uint32_t addr)
2232 {
2233 IDEBus *bus = opaque;
2234 IDEState *s = idebus_active_if(bus);
2235 int ret;
2236
2237 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2238 (s != bus->ifs && !s->blk)) {
2239 ret = 0;
2240 } else {
2241 ret = s->status;
2242 }
2243
2244 trace_ide_status_read(addr, ret, bus, s);
2245 return ret;
2246 }
2247
2248 static void ide_perform_srst(IDEState *s)
2249 {
2250 s->status |= BUSY_STAT;
2251
2252 /* Halt PIO (Via register state); PIO BH remains scheduled. */
2253 ide_transfer_halt(s);
2254
2255 /* Cancel DMA -- may drain block device and invoke callbacks */
2256 ide_cancel_dma_sync(s);
2257
2258 /* Cancel PIO callback, reset registers/signature, etc */
2259 ide_reset(s);
2260
2261 /* perform diagnostic */
2262 cmd_exec_dev_diagnostic(s, WIN_DIAGNOSE);
2263 }
2264
2265 static void ide_bus_perform_srst(void *opaque)
2266 {
2267 IDEBus *bus = opaque;
2268 IDEState *s;
2269 int i;
2270
2271 for (i = 0; i < 2; i++) {
2272 s = &bus->ifs[i];
2273 ide_perform_srst(s);
2274 }
2275
2276 bus->cmd &= ~IDE_CTRL_RESET;
2277 }
2278
2279 void ide_ctrl_write(void *opaque, uint32_t addr, uint32_t val)
2280 {
2281 IDEBus *bus = opaque;
2282 IDEState *s;
2283 int i;
2284
2285 trace_ide_ctrl_write(addr, val, bus);
2286
2287 /* Device0 and Device1 each have their own control register,
2288 * but QEMU models it as just one register in the controller. */
2289 if (!(bus->cmd & IDE_CTRL_RESET) && (val & IDE_CTRL_RESET)) {
2290 for (i = 0; i < 2; i++) {
2291 s = &bus->ifs[i];
2292 s->status |= BUSY_STAT;
2293 }
2294 replay_bh_schedule_oneshot_event(qemu_get_aio_context(),
2295 ide_bus_perform_srst, bus);
2296 }
2297
2298 bus->cmd = val;
2299 }
2300
2301 /*
2302 * Returns true if the running PIO transfer is a PIO out (i.e. data is
2303 * transferred from the device to the guest), false if it's a PIO in
2304 */
2305 static bool ide_is_pio_out(IDEState *s)
2306 {
2307 if (s->end_transfer_func == ide_sector_write ||
2308 s->end_transfer_func == ide_atapi_cmd) {
2309 return false;
2310 } else if (s->end_transfer_func == ide_sector_read ||
2311 s->end_transfer_func == ide_transfer_stop ||
2312 s->end_transfer_func == ide_atapi_cmd_reply_end ||
2313 s->end_transfer_func == ide_dummy_transfer_stop) {
2314 return true;
2315 }
2316
2317 abort();
2318 }
2319
2320 void ide_data_writew(void *opaque, uint32_t addr, uint32_t val)
2321 {
2322 IDEBus *bus = opaque;
2323 IDEState *s = idebus_active_if(bus);
2324 uint8_t *p;
2325
2326 trace_ide_data_writew(addr, val, bus, s);
2327
2328 /* PIO data access allowed only when DRQ bit is set. The result of a write
2329 * during PIO out is indeterminate, just ignore it. */
2330 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2331 return;
2332 }
2333
2334 p = s->data_ptr;
2335 if (p + 2 > s->data_end) {
2336 return;
2337 }
2338
2339 *(uint16_t *)p = le16_to_cpu(val);
2340 p += 2;
2341 s->data_ptr = p;
2342 if (p >= s->data_end) {
2343 s->status &= ~DRQ_STAT;
2344 s->end_transfer_func(s);
2345 }
2346 }
2347
2348 uint32_t ide_data_readw(void *opaque, uint32_t addr)
2349 {
2350 IDEBus *bus = opaque;
2351 IDEState *s = idebus_active_if(bus);
2352 uint8_t *p;
2353 int ret;
2354
2355 /* PIO data access allowed only when DRQ bit is set. The result of a read
2356 * during PIO in is indeterminate, return 0 and don't move forward. */
2357 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2358 return 0;
2359 }
2360
2361 p = s->data_ptr;
2362 if (p + 2 > s->data_end) {
2363 return 0;
2364 }
2365
2366 ret = cpu_to_le16(*(uint16_t *)p);
2367 p += 2;
2368 s->data_ptr = p;
2369 if (p >= s->data_end) {
2370 s->status &= ~DRQ_STAT;
2371 s->end_transfer_func(s);
2372 }
2373
2374 trace_ide_data_readw(addr, ret, bus, s);
2375 return ret;
2376 }
2377
2378 void ide_data_writel(void *opaque, uint32_t addr, uint32_t val)
2379 {
2380 IDEBus *bus = opaque;
2381 IDEState *s = idebus_active_if(bus);
2382 uint8_t *p;
2383
2384 trace_ide_data_writel(addr, val, bus, s);
2385
2386 /* PIO data access allowed only when DRQ bit is set. The result of a write
2387 * during PIO out is indeterminate, just ignore it. */
2388 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2389 return;
2390 }
2391
2392 p = s->data_ptr;
2393 if (p + 4 > s->data_end) {
2394 return;
2395 }
2396
2397 *(uint32_t *)p = le32_to_cpu(val);
2398 p += 4;
2399 s->data_ptr = p;
2400 if (p >= s->data_end) {
2401 s->status &= ~DRQ_STAT;
2402 s->end_transfer_func(s);
2403 }
2404 }
2405
2406 uint32_t ide_data_readl(void *opaque, uint32_t addr)
2407 {
2408 IDEBus *bus = opaque;
2409 IDEState *s = idebus_active_if(bus);
2410 uint8_t *p;
2411 int ret;
2412
2413 /* PIO data access allowed only when DRQ bit is set. The result of a read
2414 * during PIO in is indeterminate, return 0 and don't move forward. */
2415 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2416 ret = 0;
2417 goto out;
2418 }
2419
2420 p = s->data_ptr;
2421 if (p + 4 > s->data_end) {
2422 return 0;
2423 }
2424
2425 ret = cpu_to_le32(*(uint32_t *)p);
2426 p += 4;
2427 s->data_ptr = p;
2428 if (p >= s->data_end) {
2429 s->status &= ~DRQ_STAT;
2430 s->end_transfer_func(s);
2431 }
2432
2433 out:
2434 trace_ide_data_readl(addr, ret, bus, s);
2435 return ret;
2436 }
2437
2438 static void ide_dummy_transfer_stop(IDEState *s)
2439 {
2440 s->data_ptr = s->io_buffer;
2441 s->data_end = s->io_buffer;
2442 s->io_buffer[0] = 0xff;
2443 s->io_buffer[1] = 0xff;
2444 s->io_buffer[2] = 0xff;
2445 s->io_buffer[3] = 0xff;
2446 }
2447
2448 void ide_bus_reset(IDEBus *bus)
2449 {
2450 bus->unit = 0;
2451 bus->cmd = 0;
2452 ide_reset(&bus->ifs[0]);
2453 ide_reset(&bus->ifs[1]);
2454 ide_clear_hob(bus);
2455
2456 /* pending async DMA */
2457 if (bus->dma->aiocb) {
2458 trace_ide_bus_reset_aio();
2459 blk_aio_cancel(bus->dma->aiocb);
2460 bus->dma->aiocb = NULL;
2461 }
2462
2463 /* reset dma provider too */
2464 if (bus->dma->ops->reset) {
2465 bus->dma->ops->reset(bus->dma);
2466 }
2467 }
2468
2469 static bool ide_cd_is_tray_open(void *opaque)
2470 {
2471 return ((IDEState *)opaque)->tray_open;
2472 }
2473
2474 static bool ide_cd_is_medium_locked(void *opaque)
2475 {
2476 return ((IDEState *)opaque)->tray_locked;
2477 }
2478
2479 static void ide_resize_cb(void *opaque)
2480 {
2481 IDEState *s = opaque;
2482 uint64_t nb_sectors;
2483
2484 if (!s->identify_set) {
2485 return;
2486 }
2487
2488 blk_get_geometry(s->blk, &nb_sectors);
2489 s->nb_sectors = nb_sectors;
2490
2491 /* Update the identify data buffer. */
2492 if (s->drive_kind == IDE_CFATA) {
2493 ide_cfata_identify_size(s);
2494 } else {
2495 /* IDE_CD uses a different set of callbacks entirely. */
2496 assert(s->drive_kind != IDE_CD);
2497 ide_identify_size(s);
2498 }
2499 }
2500
2501 static const BlockDevOps ide_cd_block_ops = {
2502 .change_media_cb = ide_cd_change_cb,
2503 .eject_request_cb = ide_cd_eject_request_cb,
2504 .is_tray_open = ide_cd_is_tray_open,
2505 .is_medium_locked = ide_cd_is_medium_locked,
2506 };
2507
2508 static const BlockDevOps ide_hd_block_ops = {
2509 .resize_cb = ide_resize_cb,
2510 };
2511
2512 int ide_init_drive(IDEState *s, BlockBackend *blk, IDEDriveKind kind,
2513 const char *version, const char *serial, const char *model,
2514 uint64_t wwn,
2515 uint32_t cylinders, uint32_t heads, uint32_t secs,
2516 int chs_trans, Error **errp)
2517 {
2518 uint64_t nb_sectors;
2519
2520 s->blk = blk;
2521 s->drive_kind = kind;
2522
2523 blk_get_geometry(blk, &nb_sectors);
2524 s->cylinders = cylinders;
2525 s->heads = heads;
2526 s->sectors = secs;
2527 s->chs_trans = chs_trans;
2528 s->nb_sectors = nb_sectors;
2529 s->wwn = wwn;
2530 /* The SMART values should be preserved across power cycles
2531 but they aren't. */
2532 s->smart_enabled = 1;
2533 s->smart_autosave = 1;
2534 s->smart_errors = 0;
2535 s->smart_selftest_count = 0;
2536 if (kind == IDE_CD) {
2537 blk_set_dev_ops(blk, &ide_cd_block_ops, s);
2538 blk_set_guest_block_size(blk, 2048);
2539 } else {
2540 if (!blk_is_inserted(s->blk)) {
2541 error_setg(errp, "Device needs media, but drive is empty");
2542 return -1;
2543 }
2544 if (!blk_is_writable(blk)) {
2545 error_setg(errp, "Can't use a read-only drive");
2546 return -1;
2547 }
2548 blk_set_dev_ops(blk, &ide_hd_block_ops, s);
2549 }
2550 if (serial) {
2551 pstrcpy(s->drive_serial_str, sizeof(s->drive_serial_str), serial);
2552 } else {
2553 snprintf(s->drive_serial_str, sizeof(s->drive_serial_str),
2554 "QM%05d", s->drive_serial);
2555 }
2556 if (model) {
2557 pstrcpy(s->drive_model_str, sizeof(s->drive_model_str), model);
2558 } else {
2559 switch (kind) {
2560 case IDE_CD:
2561 strcpy(s->drive_model_str, "QEMU DVD-ROM");
2562 break;
2563 case IDE_CFATA:
2564 strcpy(s->drive_model_str, "QEMU MICRODRIVE");
2565 break;
2566 default:
2567 strcpy(s->drive_model_str, "QEMU HARDDISK");
2568 break;
2569 }
2570 }
2571
2572 if (version) {
2573 pstrcpy(s->version, sizeof(s->version), version);
2574 } else {
2575 pstrcpy(s->version, sizeof(s->version), qemu_hw_version());
2576 }
2577
2578 ide_reset(s);
2579 blk_iostatus_enable(blk);
2580 return 0;
2581 }
2582
2583 static void ide_init1(IDEBus *bus, int unit)
2584 {
2585 static int drive_serial = 1;
2586 IDEState *s = &bus->ifs[unit];
2587
2588 s->bus = bus;
2589 s->unit = unit;
2590 s->drive_serial = drive_serial++;
2591 /* we need at least 2k alignment for accessing CDROMs using O_DIRECT */
2592 s->io_buffer_total_len = IDE_DMA_BUF_SECTORS*512 + 4;
2593 s->io_buffer = qemu_memalign(2048, s->io_buffer_total_len);
2594 memset(s->io_buffer, 0, s->io_buffer_total_len);
2595
2596 s->smart_selftest_data = blk_blockalign(s->blk, 512);
2597 memset(s->smart_selftest_data, 0, 512);
2598
2599 s->sector_write_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
2600 ide_sector_write_timer_cb, s);
2601 }
2602
2603 static int ide_nop_int(const IDEDMA *dma, bool is_write)
2604 {
2605 return 0;
2606 }
2607
2608 static void ide_nop(const IDEDMA *dma)
2609 {
2610 }
2611
2612 static int32_t ide_nop_int32(const IDEDMA *dma, int32_t l)
2613 {
2614 return 0;
2615 }
2616
2617 static const IDEDMAOps ide_dma_nop_ops = {
2618 .prepare_buf = ide_nop_int32,
2619 .restart_dma = ide_nop,
2620 .rw_buf = ide_nop_int,
2621 };
2622
2623 static void ide_restart_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
2624 {
2625 s->unit = s->bus->retry_unit;
2626 ide_set_sector(s, s->bus->retry_sector_num);
2627 s->nsector = s->bus->retry_nsector;
2628 s->bus->dma->ops->restart_dma(s->bus->dma);
2629 s->io_buffer_size = 0;
2630 s->dma_cmd = dma_cmd;
2631 ide_start_dma(s, ide_dma_cb);
2632 }
2633
2634 static void ide_restart_bh(void *opaque)
2635 {
2636 IDEBus *bus = opaque;
2637 IDEState *s;
2638 bool is_read;
2639 int error_status;
2640
2641 qemu_bh_delete(bus->bh);
2642 bus->bh = NULL;
2643
2644 error_status = bus->error_status;
2645 if (bus->error_status == 0) {
2646 return;
2647 }
2648
2649 s = idebus_active_if(bus);
2650 is_read = (bus->error_status & IDE_RETRY_READ) != 0;
2651
2652 /* The error status must be cleared before resubmitting the request: The
2653 * request may fail again, and this case can only be distinguished if the
2654 * called function can set a new error status. */
2655 bus->error_status = 0;
2656
2657 /* The HBA has generically asked to be kicked on retry */
2658 if (error_status & IDE_RETRY_HBA) {
2659 if (s->bus->dma->ops->restart) {
2660 s->bus->dma->ops->restart(s->bus->dma);
2661 }
2662 } else if (IS_IDE_RETRY_DMA(error_status)) {
2663 if (error_status & IDE_RETRY_TRIM) {
2664 ide_restart_dma(s, IDE_DMA_TRIM);
2665 } else {
2666 ide_restart_dma(s, is_read ? IDE_DMA_READ : IDE_DMA_WRITE);
2667 }
2668 } else if (IS_IDE_RETRY_PIO(error_status)) {
2669 if (is_read) {
2670 ide_sector_read(s);
2671 } else {
2672 ide_sector_write(s);
2673 }
2674 } else if (error_status & IDE_RETRY_FLUSH) {
2675 ide_flush_cache(s);
2676 } else if (IS_IDE_RETRY_ATAPI(error_status)) {
2677 assert(s->end_transfer_func == ide_atapi_cmd);
2678 ide_atapi_dma_restart(s);
2679 } else {
2680 abort();
2681 }
2682 }
2683
2684 static void ide_restart_cb(void *opaque, bool running, RunState state)
2685 {
2686 IDEBus *bus = opaque;
2687
2688 if (!running)
2689 return;
2690
2691 if (!bus->bh) {
2692 bus->bh = qemu_bh_new(ide_restart_bh, bus);
2693 qemu_bh_schedule(bus->bh);
2694 }
2695 }
2696
2697 void ide_register_restart_cb(IDEBus *bus)
2698 {
2699 if (bus->dma->ops->restart_dma) {
2700 bus->vmstate = qemu_add_vm_change_state_handler(ide_restart_cb, bus);
2701 }
2702 }
2703
2704 static IDEDMA ide_dma_nop = {
2705 .ops = &ide_dma_nop_ops,
2706 .aiocb = NULL,
2707 };
2708
2709 void ide_init2(IDEBus *bus, qemu_irq irq)
2710 {
2711 int i;
2712
2713 for(i = 0; i < 2; i++) {
2714 ide_init1(bus, i);
2715 ide_reset(&bus->ifs[i]);
2716 }
2717 bus->irq = irq;
2718 bus->dma = &ide_dma_nop;
2719 }
2720
2721 void ide_exit(IDEState *s)
2722 {
2723 timer_free(s->sector_write_timer);
2724 qemu_vfree(s->smart_selftest_data);
2725 qemu_vfree(s->io_buffer);
2726 }
2727
2728 static bool is_identify_set(void *opaque, int version_id)
2729 {
2730 IDEState *s = opaque;
2731
2732 return s->identify_set != 0;
2733 }
2734
2735 static EndTransferFunc* transfer_end_table[] = {
2736 ide_sector_read,
2737 ide_sector_write,
2738 ide_transfer_stop,
2739 ide_atapi_cmd_reply_end,
2740 ide_atapi_cmd,
2741 ide_dummy_transfer_stop,
2742 };
2743
2744 static int transfer_end_table_idx(EndTransferFunc *fn)
2745 {
2746 int i;
2747
2748 for (i = 0; i < ARRAY_SIZE(transfer_end_table); i++)
2749 if (transfer_end_table[i] == fn)
2750 return i;
2751
2752 return -1;
2753 }
2754
2755 static int ide_drive_post_load(void *opaque, int version_id)
2756 {
2757 IDEState *s = opaque;
2758
2759 if (s->blk && s->identify_set) {
2760 blk_set_enable_write_cache(s->blk, !!(s->identify_data[85] & (1 << 5)));
2761 }
2762 return 0;
2763 }
2764
2765 static int ide_drive_pio_post_load(void *opaque, int version_id)
2766 {
2767 IDEState *s = opaque;
2768
2769 if (s->end_transfer_fn_idx >= ARRAY_SIZE(transfer_end_table)) {
2770 return -EINVAL;
2771 }
2772 s->end_transfer_func = transfer_end_table[s->end_transfer_fn_idx];
2773 s->data_ptr = s->io_buffer + s->cur_io_buffer_offset;
2774 s->data_end = s->data_ptr + s->cur_io_buffer_len;
2775 s->atapi_dma = s->feature & 1; /* as per cmd_packet */
2776
2777 return 0;
2778 }
2779
2780 static int ide_drive_pio_pre_save(void *opaque)
2781 {
2782 IDEState *s = opaque;
2783 int idx;
2784
2785 s->cur_io_buffer_offset = s->data_ptr - s->io_buffer;
2786 s->cur_io_buffer_len = s->data_end - s->data_ptr;
2787
2788 idx = transfer_end_table_idx(s->end_transfer_func);
2789 if (idx == -1) {
2790 fprintf(stderr, "%s: invalid end_transfer_func for DRQ_STAT\n",
2791 __func__);
2792 s->end_transfer_fn_idx = 2;
2793 } else {
2794 s->end_transfer_fn_idx = idx;
2795 }
2796
2797 return 0;
2798 }
2799
2800 static bool ide_drive_pio_state_needed(void *opaque)
2801 {
2802 IDEState *s = opaque;
2803
2804 return ((s->status & DRQ_STAT) != 0)
2805 || (s->bus->error_status & IDE_RETRY_PIO);
2806 }
2807
2808 static bool ide_tray_state_needed(void *opaque)
2809 {
2810 IDEState *s = opaque;
2811
2812 return s->tray_open || s->tray_locked;
2813 }
2814
2815 static bool ide_atapi_gesn_needed(void *opaque)
2816 {
2817 IDEState *s = opaque;
2818
2819 return s->events.new_media || s->events.eject_request;
2820 }
2821
2822 static bool ide_error_needed(void *opaque)
2823 {
2824 IDEBus *bus = opaque;
2825
2826 return (bus->error_status != 0);
2827 }
2828
2829 /* Fields for GET_EVENT_STATUS_NOTIFICATION ATAPI command */
2830 static const VMStateDescription vmstate_ide_atapi_gesn_state = {
2831 .name ="ide_drive/atapi/gesn_state",
2832 .version_id = 1,
2833 .minimum_version_id = 1,
2834 .needed = ide_atapi_gesn_needed,
2835 .fields = (VMStateField[]) {
2836 VMSTATE_BOOL(events.new_media, IDEState),
2837 VMSTATE_BOOL(events.eject_request, IDEState),
2838 VMSTATE_END_OF_LIST()
2839 }
2840 };
2841
2842 static const VMStateDescription vmstate_ide_tray_state = {
2843 .name = "ide_drive/tray_state",
2844 .version_id = 1,
2845 .minimum_version_id = 1,
2846 .needed = ide_tray_state_needed,
2847 .fields = (VMStateField[]) {
2848 VMSTATE_BOOL(tray_open, IDEState),
2849 VMSTATE_BOOL(tray_locked, IDEState),
2850 VMSTATE_END_OF_LIST()
2851 }
2852 };
2853
2854 static const VMStateDescription vmstate_ide_drive_pio_state = {
2855 .name = "ide_drive/pio_state",
2856 .version_id = 1,
2857 .minimum_version_id = 1,
2858 .pre_save = ide_drive_pio_pre_save,
2859 .post_load = ide_drive_pio_post_load,
2860 .needed = ide_drive_pio_state_needed,
2861 .fields = (VMStateField[]) {
2862 VMSTATE_INT32(req_nb_sectors, IDEState),
2863 VMSTATE_VARRAY_INT32(io_buffer, IDEState, io_buffer_total_len, 1,
2864 vmstate_info_uint8, uint8_t),
2865 VMSTATE_INT32(cur_io_buffer_offset, IDEState),
2866 VMSTATE_INT32(cur_io_buffer_len, IDEState),
2867 VMSTATE_UINT8(end_transfer_fn_idx, IDEState),
2868 VMSTATE_INT32(elementary_transfer_size, IDEState),
2869 VMSTATE_INT32(packet_transfer_size, IDEState),
2870 VMSTATE_END_OF_LIST()
2871 }
2872 };
2873
2874 const VMStateDescription vmstate_ide_drive = {
2875 .name = "ide_drive",
2876 .version_id = 3,
2877 .minimum_version_id = 0,
2878 .post_load = ide_drive_post_load,
2879 .fields = (VMStateField[]) {
2880 VMSTATE_INT32(mult_sectors, IDEState),
2881 VMSTATE_INT32(identify_set, IDEState),
2882 VMSTATE_BUFFER_TEST(identify_data, IDEState, is_identify_set),
2883 VMSTATE_UINT8(feature, IDEState),
2884 VMSTATE_UINT8(error, IDEState),
2885 VMSTATE_UINT32(nsector, IDEState),
2886 VMSTATE_UINT8(sector, IDEState),
2887 VMSTATE_UINT8(lcyl, IDEState),
2888 VMSTATE_UINT8(hcyl, IDEState),
2889 VMSTATE_UINT8(hob_feature, IDEState),
2890 VMSTATE_UINT8(hob_sector, IDEState),
2891 VMSTATE_UINT8(hob_nsector, IDEState),
2892 VMSTATE_UINT8(hob_lcyl, IDEState),
2893 VMSTATE_UINT8(hob_hcyl, IDEState),
2894 VMSTATE_UINT8(select, IDEState),
2895 VMSTATE_UINT8(status, IDEState),
2896 VMSTATE_UINT8(lba48, IDEState),
2897 VMSTATE_UINT8(sense_key, IDEState),
2898 VMSTATE_UINT8(asc, IDEState),
2899 VMSTATE_UINT8_V(cdrom_changed, IDEState, 3),
2900 VMSTATE_END_OF_LIST()
2901 },
2902 .subsections = (const VMStateDescription*[]) {
2903 &vmstate_ide_drive_pio_state,
2904 &vmstate_ide_tray_state,
2905 &vmstate_ide_atapi_gesn_state,
2906 NULL
2907 }
2908 };
2909
2910 static const VMStateDescription vmstate_ide_error_status = {
2911 .name ="ide_bus/error",
2912 .version_id = 2,
2913 .minimum_version_id = 1,
2914 .needed = ide_error_needed,
2915 .fields = (VMStateField[]) {
2916 VMSTATE_INT32(error_status, IDEBus),
2917 VMSTATE_INT64_V(retry_sector_num, IDEBus, 2),
2918 VMSTATE_UINT32_V(retry_nsector, IDEBus, 2),
2919 VMSTATE_UINT8_V(retry_unit, IDEBus, 2),
2920 VMSTATE_END_OF_LIST()
2921 }
2922 };
2923
2924 const VMStateDescription vmstate_ide_bus = {
2925 .name = "ide_bus",
2926 .version_id = 1,
2927 .minimum_version_id = 1,
2928 .fields = (VMStateField[]) {
2929 VMSTATE_UINT8(cmd, IDEBus),
2930 VMSTATE_UINT8(unit, IDEBus),
2931 VMSTATE_END_OF_LIST()
2932 },
2933 .subsections = (const VMStateDescription*[]) {
2934 &vmstate_ide_error_status,
2935 NULL
2936 }
2937 };
2938
2939 void ide_drive_get(DriveInfo **hd, int n)
2940 {
2941 int i;
2942
2943 for (i = 0; i < n; i++) {
2944 hd[i] = drive_get_by_index(IF_IDE, i);
2945 }
2946 }