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Revert "ide/ahci: Check for -ECANCELED in aio callbacks"
[qemu/ar7.git] / hw / ide / core.c
blobe6e54c6c9a27cd1b6c8ebfe326ff0749670bdc37
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 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);
107 }
108
109 static void ide_identify(IDEState *s)
110 {
111 uint16_t *p;
112 unsigned int oldsize;
113 IDEDevice *dev = s->unit ? s->bus->slave : s->bus->master;
114
115 p = (uint16_t *)s->identify_data;
116 if (s->identify_set) {
117 goto fill_buffer;
118 }
119 memset(p, 0, sizeof(s->identify_data));
120
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);
135 #endif
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);
147 if (s->mult_sectors)
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 */
160 }
161
162 if (s->ncq_queues) {
163 put_le16(p + 75, s->ncq_queues - 1);
164 /* NCQ supported */
165 put_le16(p + 76, (1 << 8));
166 }
167
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 */
175 if (s->wwn) {
176 put_le16(p + 84, (1 << 14) | (1 << 8) | 0);
177 } else {
178 put_le16(p + 84, (1 << 14) | 0);
179 }
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);
183 } else {
184 put_le16(p + 85, (1 << 14) | 1);
185 }
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 */
189 if (s->wwn) {
190 put_le16(p + 87, (1 << 14) | (1 << 8) | 0);
191 } else {
192 put_le16(p + 87, (1 << 14) | 0);
193 }
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 */
200
201 if (dev && dev->conf.physical_block_size)
202 put_le16(p + 106, 0x6000 | get_physical_block_exp(&dev->conf));
203 if (s->wwn) {
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);
209 }
210 if (dev && dev->conf.discard_granularity) {
211 put_le16(p + 169, 1); /* TRIM support */
212 }
213 if (dev) {
214 put_le16(p + 217, dev->rotation_rate); /* Nominal media rotation rate */
215 }
216
217 ide_identify_size(s);
218 s->identify_set = 1;
219
220 fill_buffer:
221 memcpy(s->io_buffer, p, sizeof(s->identify_data));
222 }
223
224 static void ide_atapi_identify(IDEState *s)
225 {
226 uint16_t *p;
227
228 p = (uint16_t *)s->identify_data;
229 if (s->identify_set) {
230 goto fill_buffer;
231 }
232 memset(p, 0, sizeof(s->identify_data));
233
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) */
243 #ifdef USE_DMA_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 */
248 #else
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 */
252 #endif
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 */
258
259 put_le16(p + 71, 30); /* in ns */
260 put_le16(p + 72, 30); /* in ns */
261
262 if (s->ncq_queues) {
263 put_le16(p + 75, s->ncq_queues - 1);
264 /* NCQ supported */
265 put_le16(p + 76, (1 << 8));
266 }
267
268 put_le16(p + 80, 0x1e); /* support up to ATA/ATAPI-4 */
269 if (s->wwn) {
270 put_le16(p + 84, (1 << 8)); /* supports WWN for words 108-111 */
271 put_le16(p + 87, (1 << 8)); /* WWN enabled */
272 }
273
274 #ifdef USE_DMA_CDROM
275 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
276 #endif
277
278 if (s->wwn) {
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);
284 }
285
286 s->identify_set = 1;
287
288 fill_buffer:
289 memcpy(s->io_buffer, p, sizeof(s->identify_data));
290 }
291
292 static void ide_cfata_identify_size(IDEState *s)
293 {
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 */
299 }
300
301 static void ide_cfata_identify(IDEState *s)
302 {
303 uint16_t *p;
304 uint32_t cur_sec;
305
306 p = (uint16_t *)s->identify_data;
307 if (s->identify_set) {
308 goto fill_buffer;
309 }
310 memset(p, 0, sizeof(s->identify_data));
311
312 cur_sec = s->cylinders * s->heads * s->sectors;
313
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);
326 #else
327 put_le16(p + 47, 0x0000);
328 #endif
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 */
360
361 ide_cfata_identify_size(s);
362 s->identify_set = 1;
363
364 fill_buffer:
365 memcpy(s->io_buffer, p, sizeof(s->identify_data));
366 }
367
368 static void ide_set_signature(IDEState *s)
369 {
370 s->select &= 0xf0; /* clear head */
371 /* put signature */
372 s->nsector = 1;
373 s->sector = 1;
374 if (s->drive_kind == IDE_CD) {
375 s->lcyl = 0x14;
376 s->hcyl = 0xeb;
377 } else if (s->blk) {
378 s->lcyl = 0;
379 s->hcyl = 0;
380 } else {
381 s->lcyl = 0xff;
382 s->hcyl = 0xff;
383 }
384 }
385
386 static bool ide_sect_range_ok(IDEState *s,
387 uint64_t sector, uint64_t nb_sectors)
388 {
389 uint64_t total_sectors;
390
391 blk_get_geometry(s->blk, &total_sectors);
392 if (sector > total_sectors || nb_sectors > total_sectors - sector) {
393 return false;
394 }
395 return true;
396 }
397
398 typedef struct TrimAIOCB {
399 BlockAIOCB common;
400 IDEState *s;
401 QEMUBH *bh;
402 int ret;
403 QEMUIOVector *qiov;
404 BlockAIOCB *aiocb;
405 int i, j;
406 } TrimAIOCB;
407
408 static void trim_aio_cancel(BlockAIOCB *acb)
409 {
410 TrimAIOCB *iocb = container_of(acb, TrimAIOCB, common);
411
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;
415
416 iocb->ret = -ECANCELED;
417
418 if (iocb->aiocb) {
419 blk_aio_cancel_async(iocb->aiocb);
420 iocb->aiocb = NULL;
421 }
422 }
423
424 static const AIOCBInfo trim_aiocb_info = {
425 .aiocb_size = sizeof(TrimAIOCB),
426 .cancel_async = trim_aio_cancel,
427 };
428
429 static void ide_trim_bh_cb(void *opaque)
430 {
431 TrimAIOCB *iocb = opaque;
432
433 iocb->common.cb(iocb->common.opaque, iocb->ret);
434
435 qemu_bh_delete(iocb->bh);
436 iocb->bh = NULL;
437 qemu_aio_unref(iocb);
438 }
439
440 static void ide_issue_trim_cb(void *opaque, int ret)
441 {
442 TrimAIOCB *iocb = opaque;
443 IDEState *s = iocb->s;
444
445 if (ret >= 0) {
446 while (iocb->j < iocb->qiov->niov) {
447 int j = iocb->j;
448 while (++iocb->i < iocb->qiov->iov[j].iov_len / 8) {
449 int i = iocb->i;
450 uint64_t *buffer = iocb->qiov->iov[j].iov_base;
451
452 /* 6-byte LBA + 2-byte range per entry */
453 uint64_t entry = le64_to_cpu(buffer[i]);
454 uint64_t sector = entry & 0x0000ffffffffffffULL;
455 uint16_t count = entry >> 48;
456
457 if (count == 0) {
458 continue;
459 }
460
461 if (!ide_sect_range_ok(s, sector, count)) {
462 iocb->ret = -EINVAL;
463 goto done;
464 }
465
466 /* Got an entry! Submit and exit. */
467 iocb->aiocb = blk_aio_pdiscard(s->blk,
468 sector << BDRV_SECTOR_BITS,
469 count << BDRV_SECTOR_BITS,
470 ide_issue_trim_cb, opaque);
471 return;
472 }
473
474 iocb->j++;
475 iocb->i = -1;
476 }
477 } else {
478 iocb->ret = ret;
479 }
480
481 done:
482 iocb->aiocb = NULL;
483 if (iocb->bh) {
484 replay_bh_schedule_event(iocb->bh);
485 }
486 }
487
488 BlockAIOCB *ide_issue_trim(
489 int64_t offset, QEMUIOVector *qiov,
490 BlockCompletionFunc *cb, void *cb_opaque, void *opaque)
491 {
492 IDEState *s = opaque;
493 TrimAIOCB *iocb;
494
495 iocb = blk_aio_get(&trim_aiocb_info, s->blk, cb, cb_opaque);
496 iocb->s = s;
497 iocb->bh = qemu_bh_new(ide_trim_bh_cb, iocb);
498 iocb->ret = 0;
499 iocb->qiov = qiov;
500 iocb->i = -1;
501 iocb->j = 0;
502 ide_issue_trim_cb(iocb, 0);
503 return &iocb->common;
504 }
505
506 void ide_abort_command(IDEState *s)
507 {
508 ide_transfer_stop(s);
509 s->status = READY_STAT | ERR_STAT;
510 s->error = ABRT_ERR;
511 }
512
513 static void ide_set_retry(IDEState *s)
514 {
515 s->bus->retry_unit = s->unit;
516 s->bus->retry_sector_num = ide_get_sector(s);
517 s->bus->retry_nsector = s->nsector;
518 }
519
520 static void ide_clear_retry(IDEState *s)
521 {
522 s->bus->retry_unit = -1;
523 s->bus->retry_sector_num = 0;
524 s->bus->retry_nsector = 0;
525 }
526
527 /* prepare data transfer and tell what to do after */
528 bool ide_transfer_start_norecurse(IDEState *s, uint8_t *buf, int size,
529 EndTransferFunc *end_transfer_func)
530 {
531 s->data_ptr = buf;
532 s->data_end = buf + size;
533 ide_set_retry(s);
534 if (!(s->status & ERR_STAT)) {
535 s->status |= DRQ_STAT;
536 }
537 if (!s->bus->dma->ops->pio_transfer) {
538 s->end_transfer_func = end_transfer_func;
539 return false;
540 }
541 s->bus->dma->ops->pio_transfer(s->bus->dma);
542 return true;
543 }
544
545 void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
546 EndTransferFunc *end_transfer_func)
547 {
548 if (ide_transfer_start_norecurse(s, buf, size, end_transfer_func)) {
549 end_transfer_func(s);
550 }
551 }
552
553 static void ide_cmd_done(IDEState *s)
554 {
555 if (s->bus->dma->ops->cmd_done) {
556 s->bus->dma->ops->cmd_done(s->bus->dma);
557 }
558 }
559
560 static void ide_transfer_halt(IDEState *s)
561 {
562 s->end_transfer_func = ide_transfer_stop;
563 s->data_ptr = s->io_buffer;
564 s->data_end = s->io_buffer;
565 s->status &= ~DRQ_STAT;
566 }
567
568 void ide_transfer_stop(IDEState *s)
569 {
570 ide_transfer_halt(s);
571 ide_cmd_done(s);
572 }
573
574 int64_t ide_get_sector(IDEState *s)
575 {
576 int64_t sector_num;
577 if (s->select & 0x40) {
578 /* lba */
579 if (!s->lba48) {
580 sector_num = ((s->select & 0x0f) << 24) | (s->hcyl << 16) |
581 (s->lcyl << 8) | s->sector;
582 } else {
583 sector_num = ((int64_t)s->hob_hcyl << 40) |
584 ((int64_t) s->hob_lcyl << 32) |
585 ((int64_t) s->hob_sector << 24) |
586 ((int64_t) s->hcyl << 16) |
587 ((int64_t) s->lcyl << 8) | s->sector;
588 }
589 } else {
590 sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
591 (s->select & 0x0f) * s->sectors + (s->sector - 1);
592 }
593 return sector_num;
594 }
595
596 void ide_set_sector(IDEState *s, int64_t sector_num)
597 {
598 unsigned int cyl, r;
599 if (s->select & 0x40) {
600 if (!s->lba48) {
601 s->select = (s->select & 0xf0) | (sector_num >> 24);
602 s->hcyl = (sector_num >> 16);
603 s->lcyl = (sector_num >> 8);
604 s->sector = (sector_num);
605 } else {
606 s->sector = sector_num;
607 s->lcyl = sector_num >> 8;
608 s->hcyl = sector_num >> 16;
609 s->hob_sector = sector_num >> 24;
610 s->hob_lcyl = sector_num >> 32;
611 s->hob_hcyl = sector_num >> 40;
612 }
613 } else {
614 cyl = sector_num / (s->heads * s->sectors);
615 r = sector_num % (s->heads * s->sectors);
616 s->hcyl = cyl >> 8;
617 s->lcyl = cyl;
618 s->select = (s->select & 0xf0) | ((r / s->sectors) & 0x0f);
619 s->sector = (r % s->sectors) + 1;
620 }
621 }
622
623 static void ide_rw_error(IDEState *s) {
624 ide_abort_command(s);
625 ide_set_irq(s->bus);
626 }
627
628 static void ide_buffered_readv_cb(void *opaque, int ret)
629 {
630 IDEBufferedRequest *req = opaque;
631 if (!req->orphaned) {
632 if (!ret) {
633 assert(req->qiov.size == req->original_qiov->size);
634 qemu_iovec_from_buf(req->original_qiov, 0,
635 req->qiov.local_iov.iov_base,
636 req->original_qiov->size);
637 }
638 req->original_cb(req->original_opaque, ret);
639 }
640 QLIST_REMOVE(req, list);
641 qemu_vfree(qemu_iovec_buf(&req->qiov));
642 g_free(req);
643 }
644
645 #define MAX_BUFFERED_REQS 16
646
647 BlockAIOCB *ide_buffered_readv(IDEState *s, int64_t sector_num,
648 QEMUIOVector *iov, int nb_sectors,
649 BlockCompletionFunc *cb, void *opaque)
650 {
651 BlockAIOCB *aioreq;
652 IDEBufferedRequest *req;
653 int c = 0;
654
655 QLIST_FOREACH(req, &s->buffered_requests, list) {
656 c++;
657 }
658 if (c > MAX_BUFFERED_REQS) {
659 return blk_abort_aio_request(s->blk, cb, opaque, -EIO);
660 }
661
662 req = g_new0(IDEBufferedRequest, 1);
663 req->original_qiov = iov;
664 req->original_cb = cb;
665 req->original_opaque = opaque;
666 qemu_iovec_init_buf(&req->qiov, blk_blockalign(s->blk, iov->size),
667 iov->size);
668
669 aioreq = blk_aio_preadv(s->blk, sector_num << BDRV_SECTOR_BITS,
670 &req->qiov, 0, ide_buffered_readv_cb, req);
671
672 QLIST_INSERT_HEAD(&s->buffered_requests, req, list);
673 return aioreq;
674 }
675
676 /**
677 * Cancel all pending DMA requests.
678 * Any buffered DMA requests are instantly canceled,
679 * but any pending unbuffered DMA requests must be waited on.
680 */
681 void ide_cancel_dma_sync(IDEState *s)
682 {
683 IDEBufferedRequest *req;
684
685 /* First invoke the callbacks of all buffered requests
686 * and flag those requests as orphaned. Ideally there
687 * are no unbuffered (Scatter Gather DMA Requests or
688 * write requests) pending and we can avoid to drain. */
689 QLIST_FOREACH(req, &s->buffered_requests, list) {
690 if (!req->orphaned) {
691 trace_ide_cancel_dma_sync_buffered(req->original_cb, req);
692 req->original_cb(req->original_opaque, -ECANCELED);
693 }
694 req->orphaned = true;
695 }
696
697 /*
698 * We can't cancel Scatter Gather DMA in the middle of the
699 * operation or a partial (not full) DMA transfer would reach
700 * the storage so we wait for completion instead (we beahve
701 * like if the DMA was completed by the time the guest trying
702 * to cancel dma with bmdma_cmd_writeb with BM_CMD_START not
703 * set).
704 *
705 * In the future we'll be able to safely cancel the I/O if the
706 * whole DMA operation will be submitted to disk with a single
707 * aio operation with preadv/pwritev.
708 */
709 if (s->bus->dma->aiocb) {
710 trace_ide_cancel_dma_sync_remaining();
711 blk_drain(s->blk);
712 assert(s->bus->dma->aiocb == NULL);
713 }
714 }
715
716 static void ide_sector_read(IDEState *s);
717
718 static void ide_sector_read_cb(void *opaque, int ret)
719 {
720 IDEState *s = opaque;
721 int n;
722
723 s->pio_aiocb = NULL;
724 s->status &= ~BUSY_STAT;
725
726 if (ret != 0) {
727 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO |
728 IDE_RETRY_READ)) {
729 return;
730 }
731 }
732
733 block_acct_done(blk_get_stats(s->blk), &s->acct);
734
735 n = s->nsector;
736 if (n > s->req_nb_sectors) {
737 n = s->req_nb_sectors;
738 }
739
740 ide_set_sector(s, ide_get_sector(s) + n);
741 s->nsector -= n;
742 /* Allow the guest to read the io_buffer */
743 ide_transfer_start(s, s->io_buffer, n * BDRV_SECTOR_SIZE, ide_sector_read);
744 ide_set_irq(s->bus);
745 }
746
747 static void ide_sector_read(IDEState *s)
748 {
749 int64_t sector_num;
750 int n;
751
752 s->status = READY_STAT | SEEK_STAT;
753 s->error = 0; /* not needed by IDE spec, but needed by Windows */
754 sector_num = ide_get_sector(s);
755 n = s->nsector;
756
757 if (n == 0) {
758 ide_transfer_stop(s);
759 return;
760 }
761
762 s->status |= BUSY_STAT;
763
764 if (n > s->req_nb_sectors) {
765 n = s->req_nb_sectors;
766 }
767
768 trace_ide_sector_read(sector_num, n);
769
770 if (!ide_sect_range_ok(s, sector_num, n)) {
771 ide_rw_error(s);
772 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_READ);
773 return;
774 }
775
776 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
777
778 block_acct_start(blk_get_stats(s->blk), &s->acct,
779 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
780 s->pio_aiocb = ide_buffered_readv(s, sector_num, &s->qiov, n,
781 ide_sector_read_cb, s);
782 }
783
784 void dma_buf_commit(IDEState *s, uint32_t tx_bytes)
785 {
786 if (s->bus->dma->ops->commit_buf) {
787 s->bus->dma->ops->commit_buf(s->bus->dma, tx_bytes);
788 }
789 s->io_buffer_offset += tx_bytes;
790 qemu_sglist_destroy(&s->sg);
791 }
792
793 void ide_set_inactive(IDEState *s, bool more)
794 {
795 s->bus->dma->aiocb = NULL;
796 ide_clear_retry(s);
797 if (s->bus->dma->ops->set_inactive) {
798 s->bus->dma->ops->set_inactive(s->bus->dma, more);
799 }
800 ide_cmd_done(s);
801 }
802
803 void ide_dma_error(IDEState *s)
804 {
805 dma_buf_commit(s, 0);
806 ide_abort_command(s);
807 ide_set_inactive(s, false);
808 ide_set_irq(s->bus);
809 }
810
811 int ide_handle_rw_error(IDEState *s, int error, int op)
812 {
813 bool is_read = (op & IDE_RETRY_READ) != 0;
814 BlockErrorAction action = blk_get_error_action(s->blk, is_read, error);
815
816 if (action == BLOCK_ERROR_ACTION_STOP) {
817 assert(s->bus->retry_unit == s->unit);
818 s->bus->error_status = op;
819 } else if (action == BLOCK_ERROR_ACTION_REPORT) {
820 block_acct_failed(blk_get_stats(s->blk), &s->acct);
821 if (IS_IDE_RETRY_DMA(op)) {
822 ide_dma_error(s);
823 } else if (IS_IDE_RETRY_ATAPI(op)) {
824 ide_atapi_io_error(s, -error);
825 } else {
826 ide_rw_error(s);
827 }
828 }
829 blk_error_action(s->blk, action, is_read, error);
830 return action != BLOCK_ERROR_ACTION_IGNORE;
831 }
832
833 static void ide_dma_cb(void *opaque, int ret)
834 {
835 IDEState *s = opaque;
836 int n;
837 int64_t sector_num;
838 uint64_t offset;
839 bool stay_active = false;
840
841 if (ret == -EINVAL) {
842 ide_dma_error(s);
843 return;
844 }
845
846 if (ret < 0) {
847 if (ide_handle_rw_error(s, -ret, ide_dma_cmd_to_retry(s->dma_cmd))) {
848 s->bus->dma->aiocb = NULL;
849 dma_buf_commit(s, 0);
850 return;
851 }
852 }
853
854 n = s->io_buffer_size >> 9;
855 if (n > s->nsector) {
856 /* The PRDs were longer than needed for this request. Shorten them so
857 * we don't get a negative remainder. The Active bit must remain set
858 * after the request completes. */
859 n = s->nsector;
860 stay_active = true;
861 }
862
863 sector_num = ide_get_sector(s);
864 if (n > 0) {
865 assert(n * 512 == s->sg.size);
866 dma_buf_commit(s, s->sg.size);
867 sector_num += n;
868 ide_set_sector(s, sector_num);
869 s->nsector -= n;
870 }
871
872 /* end of transfer ? */
873 if (s->nsector == 0) {
874 s->status = READY_STAT | SEEK_STAT;
875 ide_set_irq(s->bus);
876 goto eot;
877 }
878
879 /* launch next transfer */
880 n = s->nsector;
881 s->io_buffer_index = 0;
882 s->io_buffer_size = n * 512;
883 if (s->bus->dma->ops->prepare_buf(s->bus->dma, s->io_buffer_size) < 512) {
884 /* The PRDs were too short. Reset the Active bit, but don't raise an
885 * interrupt. */
886 s->status = READY_STAT | SEEK_STAT;
887 dma_buf_commit(s, 0);
888 goto eot;
889 }
890
891 trace_ide_dma_cb(s, sector_num, n, IDE_DMA_CMD_str(s->dma_cmd));
892
893 if ((s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) &&
894 !ide_sect_range_ok(s, sector_num, n)) {
895 ide_dma_error(s);
896 block_acct_invalid(blk_get_stats(s->blk), s->acct.type);
897 return;
898 }
899
900 offset = sector_num << BDRV_SECTOR_BITS;
901 switch (s->dma_cmd) {
902 case IDE_DMA_READ:
903 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset,
904 BDRV_SECTOR_SIZE, ide_dma_cb, s);
905 break;
906 case IDE_DMA_WRITE:
907 s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset,
908 BDRV_SECTOR_SIZE, ide_dma_cb, s);
909 break;
910 case IDE_DMA_TRIM:
911 s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk),
912 &s->sg, offset, BDRV_SECTOR_SIZE,
913 ide_issue_trim, s, ide_dma_cb, s,
914 DMA_DIRECTION_TO_DEVICE);
915 break;
916 default:
917 abort();
918 }
919 return;
920
921 eot:
922 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
923 block_acct_done(blk_get_stats(s->blk), &s->acct);
924 }
925 ide_set_inactive(s, stay_active);
926 }
927
928 static void ide_sector_start_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
929 {
930 s->status = READY_STAT | SEEK_STAT | DRQ_STAT;
931 s->io_buffer_size = 0;
932 s->dma_cmd = dma_cmd;
933
934 switch (dma_cmd) {
935 case IDE_DMA_READ:
936 block_acct_start(blk_get_stats(s->blk), &s->acct,
937 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
938 break;
939 case IDE_DMA_WRITE:
940 block_acct_start(blk_get_stats(s->blk), &s->acct,
941 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
942 break;
943 default:
944 break;
945 }
946
947 ide_start_dma(s, ide_dma_cb);
948 }
949
950 void ide_start_dma(IDEState *s, BlockCompletionFunc *cb)
951 {
952 s->io_buffer_index = 0;
953 ide_set_retry(s);
954 if (s->bus->dma->ops->start_dma) {
955 s->bus->dma->ops->start_dma(s->bus->dma, s, cb);
956 }
957 }
958
959 static void ide_sector_write(IDEState *s);
960
961 static void ide_sector_write_timer_cb(void *opaque)
962 {
963 IDEState *s = opaque;
964 ide_set_irq(s->bus);
965 }
966
967 static void ide_sector_write_cb(void *opaque, int ret)
968 {
969 IDEState *s = opaque;
970 int n;
971
972 s->pio_aiocb = NULL;
973 s->status &= ~BUSY_STAT;
974
975 if (ret != 0) {
976 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO)) {
977 return;
978 }
979 }
980
981 block_acct_done(blk_get_stats(s->blk), &s->acct);
982
983 n = s->nsector;
984 if (n > s->req_nb_sectors) {
985 n = s->req_nb_sectors;
986 }
987 s->nsector -= n;
988
989 ide_set_sector(s, ide_get_sector(s) + n);
990 if (s->nsector == 0) {
991 /* no more sectors to write */
992 ide_transfer_stop(s);
993 } else {
994 int n1 = s->nsector;
995 if (n1 > s->req_nb_sectors) {
996 n1 = s->req_nb_sectors;
997 }
998 ide_transfer_start(s, s->io_buffer, n1 * BDRV_SECTOR_SIZE,
999 ide_sector_write);
1000 }
1001
1002 if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
1003 /* It seems there is a bug in the Windows 2000 installer HDD
1004 IDE driver which fills the disk with empty logs when the
1005 IDE write IRQ comes too early. This hack tries to correct
1006 that at the expense of slower write performances. Use this
1007 option _only_ to install Windows 2000. You must disable it
1008 for normal use. */
1009 timer_mod(s->sector_write_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1010 (NANOSECONDS_PER_SECOND / 1000));
1011 } else {
1012 ide_set_irq(s->bus);
1013 }
1014 }
1015
1016 static void ide_sector_write(IDEState *s)
1017 {
1018 int64_t sector_num;
1019 int n;
1020
1021 s->status = READY_STAT | SEEK_STAT | BUSY_STAT;
1022 sector_num = ide_get_sector(s);
1023
1024 n = s->nsector;
1025 if (n > s->req_nb_sectors) {
1026 n = s->req_nb_sectors;
1027 }
1028
1029 trace_ide_sector_write(sector_num, n);
1030
1031 if (!ide_sect_range_ok(s, sector_num, n)) {
1032 ide_rw_error(s);
1033 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_WRITE);
1034 return;
1035 }
1036
1037 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
1038
1039 block_acct_start(blk_get_stats(s->blk), &s->acct,
1040 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
1041 s->pio_aiocb = blk_aio_pwritev(s->blk, sector_num << BDRV_SECTOR_BITS,
1042 &s->qiov, 0, ide_sector_write_cb, s);
1043 }
1044
1045 static void ide_flush_cb(void *opaque, int ret)
1046 {
1047 IDEState *s = opaque;
1048
1049 s->pio_aiocb = NULL;
1050
1051 if (ret < 0) {
1052 /* XXX: What sector number to set here? */
1053 if (ide_handle_rw_error(s, -ret, IDE_RETRY_FLUSH)) {
1054 return;
1055 }
1056 }
1057
1058 if (s->blk) {
1059 block_acct_done(blk_get_stats(s->blk), &s->acct);
1060 }
1061 s->status = READY_STAT | SEEK_STAT;
1062 ide_cmd_done(s);
1063 ide_set_irq(s->bus);
1064 }
1065
1066 static void ide_flush_cache(IDEState *s)
1067 {
1068 if (s->blk == NULL) {
1069 ide_flush_cb(s, 0);
1070 return;
1071 }
1072
1073 s->status |= BUSY_STAT;
1074 ide_set_retry(s);
1075 block_acct_start(blk_get_stats(s->blk), &s->acct, 0, BLOCK_ACCT_FLUSH);
1076 s->pio_aiocb = blk_aio_flush(s->blk, ide_flush_cb, s);
1077 }
1078
1079 static void ide_cfata_metadata_inquiry(IDEState *s)
1080 {
1081 uint16_t *p;
1082 uint32_t spd;
1083
1084 p = (uint16_t *) s->io_buffer;
1085 memset(p, 0, 0x200);
1086 spd = ((s->mdata_size - 1) >> 9) + 1;
1087
1088 put_le16(p + 0, 0x0001); /* Data format revision */
1089 put_le16(p + 1, 0x0000); /* Media property: silicon */
1090 put_le16(p + 2, s->media_changed); /* Media status */
1091 put_le16(p + 3, s->mdata_size & 0xffff); /* Capacity in bytes (low) */
1092 put_le16(p + 4, s->mdata_size >> 16); /* Capacity in bytes (high) */
1093 put_le16(p + 5, spd & 0xffff); /* Sectors per device (low) */
1094 put_le16(p + 6, spd >> 16); /* Sectors per device (high) */
1095 }
1096
1097 static void ide_cfata_metadata_read(IDEState *s)
1098 {
1099 uint16_t *p;
1100
1101 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1102 s->status = ERR_STAT;
1103 s->error = ABRT_ERR;
1104 return;
1105 }
1106
1107 p = (uint16_t *) s->io_buffer;
1108 memset(p, 0, 0x200);
1109
1110 put_le16(p + 0, s->media_changed); /* Media status */
1111 memcpy(p + 1, s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1112 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1113 s->nsector << 9), 0x200 - 2));
1114 }
1115
1116 static void ide_cfata_metadata_write(IDEState *s)
1117 {
1118 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1119 s->status = ERR_STAT;
1120 s->error = ABRT_ERR;
1121 return;
1122 }
1123
1124 s->media_changed = 0;
1125
1126 memcpy(s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1127 s->io_buffer + 2,
1128 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1129 s->nsector << 9), 0x200 - 2));
1130 }
1131
1132 /* called when the inserted state of the media has changed */
1133 static void ide_cd_change_cb(void *opaque, bool load, Error **errp)
1134 {
1135 IDEState *s = opaque;
1136 uint64_t nb_sectors;
1137
1138 s->tray_open = !load;
1139 blk_get_geometry(s->blk, &nb_sectors);
1140 s->nb_sectors = nb_sectors;
1141
1142 /*
1143 * First indicate to the guest that a CD has been removed. That's
1144 * done on the next command the guest sends us.
1145 *
1146 * Then we set UNIT_ATTENTION, by which the guest will
1147 * detect a new CD in the drive. See ide_atapi_cmd() for details.
1148 */
1149 s->cdrom_changed = 1;
1150 s->events.new_media = true;
1151 s->events.eject_request = false;
1152 ide_set_irq(s->bus);
1153 }
1154
1155 static void ide_cd_eject_request_cb(void *opaque, bool force)
1156 {
1157 IDEState *s = opaque;
1158
1159 s->events.eject_request = true;
1160 if (force) {
1161 s->tray_locked = false;
1162 }
1163 ide_set_irq(s->bus);
1164 }
1165
1166 static void ide_cmd_lba48_transform(IDEState *s, int lba48)
1167 {
1168 s->lba48 = lba48;
1169
1170 /* handle the 'magic' 0 nsector count conversion here. to avoid
1171 * fiddling with the rest of the read logic, we just store the
1172 * full sector count in ->nsector and ignore ->hob_nsector from now
1173 */
1174 if (!s->lba48) {
1175 if (!s->nsector)
1176 s->nsector = 256;
1177 } else {
1178 if (!s->nsector && !s->hob_nsector)
1179 s->nsector = 65536;
1180 else {
1181 int lo = s->nsector;
1182 int hi = s->hob_nsector;
1183
1184 s->nsector = (hi << 8) | lo;
1185 }
1186 }
1187 }
1188
1189 static void ide_clear_hob(IDEBus *bus)
1190 {
1191 /* any write clears HOB high bit of device control register */
1192 bus->ifs[0].select &= ~(1 << 7);
1193 bus->ifs[1].select &= ~(1 << 7);
1194 }
1195
1196 /* IOport [W]rite [R]egisters */
1197 enum ATA_IOPORT_WR {
1198 ATA_IOPORT_WR_DATA = 0,
1199 ATA_IOPORT_WR_FEATURES = 1,
1200 ATA_IOPORT_WR_SECTOR_COUNT = 2,
1201 ATA_IOPORT_WR_SECTOR_NUMBER = 3,
1202 ATA_IOPORT_WR_CYLINDER_LOW = 4,
1203 ATA_IOPORT_WR_CYLINDER_HIGH = 5,
1204 ATA_IOPORT_WR_DEVICE_HEAD = 6,
1205 ATA_IOPORT_WR_COMMAND = 7,
1206 ATA_IOPORT_WR_NUM_REGISTERS,
1207 };
1208
1209 const char *ATA_IOPORT_WR_lookup[ATA_IOPORT_WR_NUM_REGISTERS] = {
1210 [ATA_IOPORT_WR_DATA] = "Data",
1211 [ATA_IOPORT_WR_FEATURES] = "Features",
1212 [ATA_IOPORT_WR_SECTOR_COUNT] = "Sector Count",
1213 [ATA_IOPORT_WR_SECTOR_NUMBER] = "Sector Number",
1214 [ATA_IOPORT_WR_CYLINDER_LOW] = "Cylinder Low",
1215 [ATA_IOPORT_WR_CYLINDER_HIGH] = "Cylinder High",
1216 [ATA_IOPORT_WR_DEVICE_HEAD] = "Device/Head",
1217 [ATA_IOPORT_WR_COMMAND] = "Command"
1218 };
1219
1220 void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
1221 {
1222 IDEBus *bus = opaque;
1223 IDEState *s = idebus_active_if(bus);
1224 int reg_num = addr & 7;
1225
1226 trace_ide_ioport_write(addr, ATA_IOPORT_WR_lookup[reg_num], val, bus, s);
1227
1228 /* ignore writes to command block while busy with previous command */
1229 if (reg_num != 7 && (s->status & (BUSY_STAT|DRQ_STAT))) {
1230 return;
1231 }
1232
1233 switch (reg_num) {
1234 case 0:
1235 break;
1236 case ATA_IOPORT_WR_FEATURES:
1237 ide_clear_hob(bus);
1238 /* NOTE: data is written to the two drives */
1239 bus->ifs[0].hob_feature = bus->ifs[0].feature;
1240 bus->ifs[1].hob_feature = bus->ifs[1].feature;
1241 bus->ifs[0].feature = val;
1242 bus->ifs[1].feature = val;
1243 break;
1244 case ATA_IOPORT_WR_SECTOR_COUNT:
1245 ide_clear_hob(bus);
1246 bus->ifs[0].hob_nsector = bus->ifs[0].nsector;
1247 bus->ifs[1].hob_nsector = bus->ifs[1].nsector;
1248 bus->ifs[0].nsector = val;
1249 bus->ifs[1].nsector = val;
1250 break;
1251 case ATA_IOPORT_WR_SECTOR_NUMBER:
1252 ide_clear_hob(bus);
1253 bus->ifs[0].hob_sector = bus->ifs[0].sector;
1254 bus->ifs[1].hob_sector = bus->ifs[1].sector;
1255 bus->ifs[0].sector = val;
1256 bus->ifs[1].sector = val;
1257 break;
1258 case ATA_IOPORT_WR_CYLINDER_LOW:
1259 ide_clear_hob(bus);
1260 bus->ifs[0].hob_lcyl = bus->ifs[0].lcyl;
1261 bus->ifs[1].hob_lcyl = bus->ifs[1].lcyl;
1262 bus->ifs[0].lcyl = val;
1263 bus->ifs[1].lcyl = val;
1264 break;
1265 case ATA_IOPORT_WR_CYLINDER_HIGH:
1266 ide_clear_hob(bus);
1267 bus->ifs[0].hob_hcyl = bus->ifs[0].hcyl;
1268 bus->ifs[1].hob_hcyl = bus->ifs[1].hcyl;
1269 bus->ifs[0].hcyl = val;
1270 bus->ifs[1].hcyl = val;
1271 break;
1272 case ATA_IOPORT_WR_DEVICE_HEAD:
1273 /* FIXME: HOB readback uses bit 7 */
1274 bus->ifs[0].select = (val & ~0x10) | 0xa0;
1275 bus->ifs[1].select = (val | 0x10) | 0xa0;
1276 /* select drive */
1277 bus->unit = (val >> 4) & 1;
1278 break;
1279 default:
1280 case ATA_IOPORT_WR_COMMAND:
1281 /* command */
1282 ide_exec_cmd(bus, val);
1283 break;
1284 }
1285 }
1286
1287 static void ide_reset(IDEState *s)
1288 {
1289 trace_ide_reset(s);
1290
1291 if (s->pio_aiocb) {
1292 blk_aio_cancel(s->pio_aiocb);
1293 s->pio_aiocb = NULL;
1294 }
1295
1296 if (s->drive_kind == IDE_CFATA)
1297 s->mult_sectors = 0;
1298 else
1299 s->mult_sectors = MAX_MULT_SECTORS;
1300 /* ide regs */
1301 s->feature = 0;
1302 s->error = 0;
1303 s->nsector = 0;
1304 s->sector = 0;
1305 s->lcyl = 0;
1306 s->hcyl = 0;
1307
1308 /* lba48 */
1309 s->hob_feature = 0;
1310 s->hob_sector = 0;
1311 s->hob_nsector = 0;
1312 s->hob_lcyl = 0;
1313 s->hob_hcyl = 0;
1314
1315 s->select = 0xa0;
1316 s->status = READY_STAT | SEEK_STAT;
1317
1318 s->lba48 = 0;
1319
1320 /* ATAPI specific */
1321 s->sense_key = 0;
1322 s->asc = 0;
1323 s->cdrom_changed = 0;
1324 s->packet_transfer_size = 0;
1325 s->elementary_transfer_size = 0;
1326 s->io_buffer_index = 0;
1327 s->cd_sector_size = 0;
1328 s->atapi_dma = 0;
1329 s->tray_locked = 0;
1330 s->tray_open = 0;
1331 /* ATA DMA state */
1332 s->io_buffer_size = 0;
1333 s->req_nb_sectors = 0;
1334
1335 ide_set_signature(s);
1336 /* init the transfer handler so that 0xffff is returned on data
1337 accesses */
1338 s->end_transfer_func = ide_dummy_transfer_stop;
1339 ide_dummy_transfer_stop(s);
1340 s->media_changed = 0;
1341 }
1342
1343 static bool cmd_nop(IDEState *s, uint8_t cmd)
1344 {
1345 return true;
1346 }
1347
1348 static bool cmd_device_reset(IDEState *s, uint8_t cmd)
1349 {
1350 /* Halt PIO (in the DRQ phase), then DMA */
1351 ide_transfer_halt(s);
1352 ide_cancel_dma_sync(s);
1353
1354 /* Reset any PIO commands, reset signature, etc */
1355 ide_reset(s);
1356
1357 /* RESET: ATA8-ACS3 7.10.4 "Normal Outputs";
1358 * ATA8-ACS3 Table 184 "Device Signatures for Normal Output" */
1359 s->status = 0x00;
1360
1361 /* Do not overwrite status register */
1362 return false;
1363 }
1364
1365 static bool cmd_data_set_management(IDEState *s, uint8_t cmd)
1366 {
1367 switch (s->feature) {
1368 case DSM_TRIM:
1369 if (s->blk) {
1370 ide_sector_start_dma(s, IDE_DMA_TRIM);
1371 return false;
1372 }
1373 break;
1374 }
1375
1376 ide_abort_command(s);
1377 return true;
1378 }
1379
1380 static bool cmd_identify(IDEState *s, uint8_t cmd)
1381 {
1382 if (s->blk && s->drive_kind != IDE_CD) {
1383 if (s->drive_kind != IDE_CFATA) {
1384 ide_identify(s);
1385 } else {
1386 ide_cfata_identify(s);
1387 }
1388 s->status = READY_STAT | SEEK_STAT;
1389 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1390 ide_set_irq(s->bus);
1391 return false;
1392 } else {
1393 if (s->drive_kind == IDE_CD) {
1394 ide_set_signature(s);
1395 }
1396 ide_abort_command(s);
1397 }
1398
1399 return true;
1400 }
1401
1402 static bool cmd_verify(IDEState *s, uint8_t cmd)
1403 {
1404 bool lba48 = (cmd == WIN_VERIFY_EXT);
1405
1406 /* do sector number check ? */
1407 ide_cmd_lba48_transform(s, lba48);
1408
1409 return true;
1410 }
1411
1412 static bool cmd_set_multiple_mode(IDEState *s, uint8_t cmd)
1413 {
1414 if (s->drive_kind == IDE_CFATA && s->nsector == 0) {
1415 /* Disable Read and Write Multiple */
1416 s->mult_sectors = 0;
1417 } else if ((s->nsector & 0xff) != 0 &&
1418 ((s->nsector & 0xff) > MAX_MULT_SECTORS ||
1419 (s->nsector & (s->nsector - 1)) != 0)) {
1420 ide_abort_command(s);
1421 } else {
1422 s->mult_sectors = s->nsector & 0xff;
1423 }
1424
1425 return true;
1426 }
1427
1428 static bool cmd_read_multiple(IDEState *s, uint8_t cmd)
1429 {
1430 bool lba48 = (cmd == WIN_MULTREAD_EXT);
1431
1432 if (!s->blk || !s->mult_sectors) {
1433 ide_abort_command(s);
1434 return true;
1435 }
1436
1437 ide_cmd_lba48_transform(s, lba48);
1438 s->req_nb_sectors = s->mult_sectors;
1439 ide_sector_read(s);
1440 return false;
1441 }
1442
1443 static bool cmd_write_multiple(IDEState *s, uint8_t cmd)
1444 {
1445 bool lba48 = (cmd == WIN_MULTWRITE_EXT);
1446 int n;
1447
1448 if (!s->blk || !s->mult_sectors) {
1449 ide_abort_command(s);
1450 return true;
1451 }
1452
1453 ide_cmd_lba48_transform(s, lba48);
1454
1455 s->req_nb_sectors = s->mult_sectors;
1456 n = MIN(s->nsector, s->req_nb_sectors);
1457
1458 s->status = SEEK_STAT | READY_STAT;
1459 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
1460
1461 s->media_changed = 1;
1462
1463 return false;
1464 }
1465
1466 static bool cmd_read_pio(IDEState *s, uint8_t cmd)
1467 {
1468 bool lba48 = (cmd == WIN_READ_EXT);
1469
1470 if (s->drive_kind == IDE_CD) {
1471 ide_set_signature(s); /* odd, but ATA4 8.27.5.2 requires it */
1472 ide_abort_command(s);
1473 return true;
1474 }
1475
1476 if (!s->blk) {
1477 ide_abort_command(s);
1478 return true;
1479 }
1480
1481 ide_cmd_lba48_transform(s, lba48);
1482 s->req_nb_sectors = 1;
1483 ide_sector_read(s);
1484
1485 return false;
1486 }
1487
1488 static bool cmd_write_pio(IDEState *s, uint8_t cmd)
1489 {
1490 bool lba48 = (cmd == WIN_WRITE_EXT);
1491
1492 if (!s->blk) {
1493 ide_abort_command(s);
1494 return true;
1495 }
1496
1497 ide_cmd_lba48_transform(s, lba48);
1498
1499 s->req_nb_sectors = 1;
1500 s->status = SEEK_STAT | READY_STAT;
1501 ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
1502
1503 s->media_changed = 1;
1504
1505 return false;
1506 }
1507
1508 static bool cmd_read_dma(IDEState *s, uint8_t cmd)
1509 {
1510 bool lba48 = (cmd == WIN_READDMA_EXT);
1511
1512 if (!s->blk) {
1513 ide_abort_command(s);
1514 return true;
1515 }
1516
1517 ide_cmd_lba48_transform(s, lba48);
1518 ide_sector_start_dma(s, IDE_DMA_READ);
1519
1520 return false;
1521 }
1522
1523 static bool cmd_write_dma(IDEState *s, uint8_t cmd)
1524 {
1525 bool lba48 = (cmd == WIN_WRITEDMA_EXT);
1526
1527 if (!s->blk) {
1528 ide_abort_command(s);
1529 return true;
1530 }
1531
1532 ide_cmd_lba48_transform(s, lba48);
1533 ide_sector_start_dma(s, IDE_DMA_WRITE);
1534
1535 s->media_changed = 1;
1536
1537 return false;
1538 }
1539
1540 static bool cmd_flush_cache(IDEState *s, uint8_t cmd)
1541 {
1542 ide_flush_cache(s);
1543 return false;
1544 }
1545
1546 static bool cmd_seek(IDEState *s, uint8_t cmd)
1547 {
1548 /* XXX: Check that seek is within bounds */
1549 return true;
1550 }
1551
1552 static bool cmd_read_native_max(IDEState *s, uint8_t cmd)
1553 {
1554 bool lba48 = (cmd == WIN_READ_NATIVE_MAX_EXT);
1555
1556 /* Refuse if no sectors are addressable (e.g. medium not inserted) */
1557 if (s->nb_sectors == 0) {
1558 ide_abort_command(s);
1559 return true;
1560 }
1561
1562 ide_cmd_lba48_transform(s, lba48);
1563 ide_set_sector(s, s->nb_sectors - 1);
1564
1565 return true;
1566 }
1567
1568 static bool cmd_check_power_mode(IDEState *s, uint8_t cmd)
1569 {
1570 s->nsector = 0xff; /* device active or idle */
1571 return true;
1572 }
1573
1574 static bool cmd_set_features(IDEState *s, uint8_t cmd)
1575 {
1576 uint16_t *identify_data;
1577
1578 if (!s->blk) {
1579 ide_abort_command(s);
1580 return true;
1581 }
1582
1583 /* XXX: valid for CDROM ? */
1584 switch (s->feature) {
1585 case 0x02: /* write cache enable */
1586 blk_set_enable_write_cache(s->blk, true);
1587 identify_data = (uint16_t *)s->identify_data;
1588 put_le16(identify_data + 85, (1 << 14) | (1 << 5) | 1);
1589 return true;
1590 case 0x82: /* write cache disable */
1591 blk_set_enable_write_cache(s->blk, false);
1592 identify_data = (uint16_t *)s->identify_data;
1593 put_le16(identify_data + 85, (1 << 14) | 1);
1594 ide_flush_cache(s);
1595 return false;
1596 case 0xcc: /* reverting to power-on defaults enable */
1597 case 0x66: /* reverting to power-on defaults disable */
1598 case 0xaa: /* read look-ahead enable */
1599 case 0x55: /* read look-ahead disable */
1600 case 0x05: /* set advanced power management mode */
1601 case 0x85: /* disable advanced power management mode */
1602 case 0x69: /* NOP */
1603 case 0x67: /* NOP */
1604 case 0x96: /* NOP */
1605 case 0x9a: /* NOP */
1606 case 0x42: /* enable Automatic Acoustic Mode */
1607 case 0xc2: /* disable Automatic Acoustic Mode */
1608 return true;
1609 case 0x03: /* set transfer mode */
1610 {
1611 uint8_t val = s->nsector & 0x07;
1612 identify_data = (uint16_t *)s->identify_data;
1613
1614 switch (s->nsector >> 3) {
1615 case 0x00: /* pio default */
1616 case 0x01: /* pio mode */
1617 put_le16(identify_data + 62, 0x07);
1618 put_le16(identify_data + 63, 0x07);
1619 put_le16(identify_data + 88, 0x3f);
1620 break;
1621 case 0x02: /* sigle word dma mode*/
1622 put_le16(identify_data + 62, 0x07 | (1 << (val + 8)));
1623 put_le16(identify_data + 63, 0x07);
1624 put_le16(identify_data + 88, 0x3f);
1625 break;
1626 case 0x04: /* mdma mode */
1627 put_le16(identify_data + 62, 0x07);
1628 put_le16(identify_data + 63, 0x07 | (1 << (val + 8)));
1629 put_le16(identify_data + 88, 0x3f);
1630 break;
1631 case 0x08: /* udma mode */
1632 put_le16(identify_data + 62, 0x07);
1633 put_le16(identify_data + 63, 0x07);
1634 put_le16(identify_data + 88, 0x3f | (1 << (val + 8)));
1635 break;
1636 default:
1637 goto abort_cmd;
1638 }
1639 return true;
1640 }
1641 }
1642
1643 abort_cmd:
1644 ide_abort_command(s);
1645 return true;
1646 }
1647
1648
1649 /*** ATAPI commands ***/
1650
1651 static bool cmd_identify_packet(IDEState *s, uint8_t cmd)
1652 {
1653 ide_atapi_identify(s);
1654 s->status = READY_STAT | SEEK_STAT;
1655 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1656 ide_set_irq(s->bus);
1657 return false;
1658 }
1659
1660 static bool cmd_exec_dev_diagnostic(IDEState *s, uint8_t cmd)
1661 {
1662 ide_set_signature(s);
1663
1664 if (s->drive_kind == IDE_CD) {
1665 s->status = 0; /* ATAPI spec (v6) section 9.10 defines packet
1666 * devices to return a clear status register
1667 * with READY_STAT *not* set. */
1668 s->error = 0x01;
1669 } else {
1670 s->status = READY_STAT | SEEK_STAT;
1671 /* The bits of the error register are not as usual for this command!
1672 * They are part of the regular output (this is why ERR_STAT isn't set)
1673 * Device 0 passed, Device 1 passed or not present. */
1674 s->error = 0x01;
1675 ide_set_irq(s->bus);
1676 }
1677
1678 return false;
1679 }
1680
1681 static bool cmd_packet(IDEState *s, uint8_t cmd)
1682 {
1683 /* overlapping commands not supported */
1684 if (s->feature & 0x02) {
1685 ide_abort_command(s);
1686 return true;
1687 }
1688
1689 s->status = READY_STAT | SEEK_STAT;
1690 s->atapi_dma = s->feature & 1;
1691 if (s->atapi_dma) {
1692 s->dma_cmd = IDE_DMA_ATAPI;
1693 }
1694 s->nsector = 1;
1695 ide_transfer_start(s, s->io_buffer, ATAPI_PACKET_SIZE,
1696 ide_atapi_cmd);
1697 return false;
1698 }
1699
1700
1701 /*** CF-ATA commands ***/
1702
1703 static bool cmd_cfa_req_ext_error_code(IDEState *s, uint8_t cmd)
1704 {
1705 s->error = 0x09; /* miscellaneous error */
1706 s->status = READY_STAT | SEEK_STAT;
1707 ide_set_irq(s->bus);
1708
1709 return false;
1710 }
1711
1712 static bool cmd_cfa_erase_sectors(IDEState *s, uint8_t cmd)
1713 {
1714 /* WIN_SECURITY_FREEZE_LOCK has the same ID as CFA_WEAR_LEVEL and is
1715 * required for Windows 8 to work with AHCI */
1716
1717 if (cmd == CFA_WEAR_LEVEL) {
1718 s->nsector = 0;
1719 }
1720
1721 if (cmd == CFA_ERASE_SECTORS) {
1722 s->media_changed = 1;
1723 }
1724
1725 return true;
1726 }
1727
1728 static bool cmd_cfa_translate_sector(IDEState *s, uint8_t cmd)
1729 {
1730 s->status = READY_STAT | SEEK_STAT;
1731
1732 memset(s->io_buffer, 0, 0x200);
1733 s->io_buffer[0x00] = s->hcyl; /* Cyl MSB */
1734 s->io_buffer[0x01] = s->lcyl; /* Cyl LSB */
1735 s->io_buffer[0x02] = s->select; /* Head */
1736 s->io_buffer[0x03] = s->sector; /* Sector */
1737 s->io_buffer[0x04] = ide_get_sector(s) >> 16; /* LBA MSB */
1738 s->io_buffer[0x05] = ide_get_sector(s) >> 8; /* LBA */
1739 s->io_buffer[0x06] = ide_get_sector(s) >> 0; /* LBA LSB */
1740 s->io_buffer[0x13] = 0x00; /* Erase flag */
1741 s->io_buffer[0x18] = 0x00; /* Hot count */
1742 s->io_buffer[0x19] = 0x00; /* Hot count */
1743 s->io_buffer[0x1a] = 0x01; /* Hot count */
1744
1745 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1746 ide_set_irq(s->bus);
1747
1748 return false;
1749 }
1750
1751 static bool cmd_cfa_access_metadata_storage(IDEState *s, uint8_t cmd)
1752 {
1753 switch (s->feature) {
1754 case 0x02: /* Inquiry Metadata Storage */
1755 ide_cfata_metadata_inquiry(s);
1756 break;
1757 case 0x03: /* Read Metadata Storage */
1758 ide_cfata_metadata_read(s);
1759 break;
1760 case 0x04: /* Write Metadata Storage */
1761 ide_cfata_metadata_write(s);
1762 break;
1763 default:
1764 ide_abort_command(s);
1765 return true;
1766 }
1767
1768 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1769 s->status = 0x00; /* NOTE: READY is _not_ set */
1770 ide_set_irq(s->bus);
1771
1772 return false;
1773 }
1774
1775 static bool cmd_ibm_sense_condition(IDEState *s, uint8_t cmd)
1776 {
1777 switch (s->feature) {
1778 case 0x01: /* sense temperature in device */
1779 s->nsector = 0x50; /* +20 C */
1780 break;
1781 default:
1782 ide_abort_command(s);
1783 return true;
1784 }
1785
1786 return true;
1787 }
1788
1789
1790 /*** SMART commands ***/
1791
1792 static bool cmd_smart(IDEState *s, uint8_t cmd)
1793 {
1794 int n;
1795
1796 if (s->hcyl != 0xc2 || s->lcyl != 0x4f) {
1797 goto abort_cmd;
1798 }
1799
1800 if (!s->smart_enabled && s->feature != SMART_ENABLE) {
1801 goto abort_cmd;
1802 }
1803
1804 switch (s->feature) {
1805 case SMART_DISABLE:
1806 s->smart_enabled = 0;
1807 return true;
1808
1809 case SMART_ENABLE:
1810 s->smart_enabled = 1;
1811 return true;
1812
1813 case SMART_ATTR_AUTOSAVE:
1814 switch (s->sector) {
1815 case 0x00:
1816 s->smart_autosave = 0;
1817 break;
1818 case 0xf1:
1819 s->smart_autosave = 1;
1820 break;
1821 default:
1822 goto abort_cmd;
1823 }
1824 return true;
1825
1826 case SMART_STATUS:
1827 if (!s->smart_errors) {
1828 s->hcyl = 0xc2;
1829 s->lcyl = 0x4f;
1830 } else {
1831 s->hcyl = 0x2c;
1832 s->lcyl = 0xf4;
1833 }
1834 return true;
1835
1836 case SMART_READ_THRESH:
1837 memset(s->io_buffer, 0, 0x200);
1838 s->io_buffer[0] = 0x01; /* smart struct version */
1839
1840 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1841 s->io_buffer[2 + 0 + (n * 12)] = smart_attributes[n][0];
1842 s->io_buffer[2 + 1 + (n * 12)] = smart_attributes[n][11];
1843 }
1844
1845 /* checksum */
1846 for (n = 0; n < 511; n++) {
1847 s->io_buffer[511] += s->io_buffer[n];
1848 }
1849 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1850
1851 s->status = READY_STAT | SEEK_STAT;
1852 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1853 ide_set_irq(s->bus);
1854 return false;
1855
1856 case SMART_READ_DATA:
1857 memset(s->io_buffer, 0, 0x200);
1858 s->io_buffer[0] = 0x01; /* smart struct version */
1859
1860 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1861 int i;
1862 for (i = 0; i < 11; i++) {
1863 s->io_buffer[2 + i + (n * 12)] = smart_attributes[n][i];
1864 }
1865 }
1866
1867 s->io_buffer[362] = 0x02 | (s->smart_autosave ? 0x80 : 0x00);
1868 if (s->smart_selftest_count == 0) {
1869 s->io_buffer[363] = 0;
1870 } else {
1871 s->io_buffer[363] =
1872 s->smart_selftest_data[3 +
1873 (s->smart_selftest_count - 1) *
1874 24];
1875 }
1876 s->io_buffer[364] = 0x20;
1877 s->io_buffer[365] = 0x01;
1878 /* offline data collection capacity: execute + self-test*/
1879 s->io_buffer[367] = (1 << 4 | 1 << 3 | 1);
1880 s->io_buffer[368] = 0x03; /* smart capability (1) */
1881 s->io_buffer[369] = 0x00; /* smart capability (2) */
1882 s->io_buffer[370] = 0x01; /* error logging supported */
1883 s->io_buffer[372] = 0x02; /* minutes for poll short test */
1884 s->io_buffer[373] = 0x36; /* minutes for poll ext test */
1885 s->io_buffer[374] = 0x01; /* minutes for poll conveyance */
1886
1887 for (n = 0; n < 511; n++) {
1888 s->io_buffer[511] += s->io_buffer[n];
1889 }
1890 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1891
1892 s->status = READY_STAT | SEEK_STAT;
1893 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1894 ide_set_irq(s->bus);
1895 return false;
1896
1897 case SMART_READ_LOG:
1898 switch (s->sector) {
1899 case 0x01: /* summary smart error log */
1900 memset(s->io_buffer, 0, 0x200);
1901 s->io_buffer[0] = 0x01;
1902 s->io_buffer[1] = 0x00; /* no error entries */
1903 s->io_buffer[452] = s->smart_errors & 0xff;
1904 s->io_buffer[453] = (s->smart_errors & 0xff00) >> 8;
1905
1906 for (n = 0; n < 511; n++) {
1907 s->io_buffer[511] += s->io_buffer[n];
1908 }
1909 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1910 break;
1911 case 0x06: /* smart self test log */
1912 memset(s->io_buffer, 0, 0x200);
1913 s->io_buffer[0] = 0x01;
1914 if (s->smart_selftest_count == 0) {
1915 s->io_buffer[508] = 0;
1916 } else {
1917 s->io_buffer[508] = s->smart_selftest_count;
1918 for (n = 2; n < 506; n++) {
1919 s->io_buffer[n] = s->smart_selftest_data[n];
1920 }
1921 }
1922
1923 for (n = 0; n < 511; n++) {
1924 s->io_buffer[511] += s->io_buffer[n];
1925 }
1926 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1927 break;
1928 default:
1929 goto abort_cmd;
1930 }
1931 s->status = READY_STAT | SEEK_STAT;
1932 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1933 ide_set_irq(s->bus);
1934 return false;
1935
1936 case SMART_EXECUTE_OFFLINE:
1937 switch (s->sector) {
1938 case 0: /* off-line routine */
1939 case 1: /* short self test */
1940 case 2: /* extended self test */
1941 s->smart_selftest_count++;
1942 if (s->smart_selftest_count > 21) {
1943 s->smart_selftest_count = 1;
1944 }
1945 n = 2 + (s->smart_selftest_count - 1) * 24;
1946 s->smart_selftest_data[n] = s->sector;
1947 s->smart_selftest_data[n + 1] = 0x00; /* OK and finished */
1948 s->smart_selftest_data[n + 2] = 0x34; /* hour count lsb */
1949 s->smart_selftest_data[n + 3] = 0x12; /* hour count msb */
1950 break;
1951 default:
1952 goto abort_cmd;
1953 }
1954 return true;
1955 }
1956
1957 abort_cmd:
1958 ide_abort_command(s);
1959 return true;
1960 }
1961
1962 #define HD_OK (1u << IDE_HD)
1963 #define CD_OK (1u << IDE_CD)
1964 #define CFA_OK (1u << IDE_CFATA)
1965 #define HD_CFA_OK (HD_OK | CFA_OK)
1966 #define ALL_OK (HD_OK | CD_OK | CFA_OK)
1967
1968 /* Set the Disk Seek Completed status bit during completion */
1969 #define SET_DSC (1u << 8)
1970
1971 /* See ACS-2 T13/2015-D Table B.2 Command codes */
1972 static const struct {
1973 /* Returns true if the completion code should be run */
1974 bool (*handler)(IDEState *s, uint8_t cmd);
1975 int flags;
1976 } ide_cmd_table[0x100] = {
1977 /* NOP not implemented, mandatory for CD */
1978 [CFA_REQ_EXT_ERROR_CODE] = { cmd_cfa_req_ext_error_code, CFA_OK },
1979 [WIN_DSM] = { cmd_data_set_management, HD_CFA_OK },
1980 [WIN_DEVICE_RESET] = { cmd_device_reset, CD_OK },
1981 [WIN_RECAL] = { cmd_nop, HD_CFA_OK | SET_DSC},
1982 [WIN_READ] = { cmd_read_pio, ALL_OK },
1983 [WIN_READ_ONCE] = { cmd_read_pio, HD_CFA_OK },
1984 [WIN_READ_EXT] = { cmd_read_pio, HD_CFA_OK },
1985 [WIN_READDMA_EXT] = { cmd_read_dma, HD_CFA_OK },
1986 [WIN_READ_NATIVE_MAX_EXT] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
1987 [WIN_MULTREAD_EXT] = { cmd_read_multiple, HD_CFA_OK },
1988 [WIN_WRITE] = { cmd_write_pio, HD_CFA_OK },
1989 [WIN_WRITE_ONCE] = { cmd_write_pio, HD_CFA_OK },
1990 [WIN_WRITE_EXT] = { cmd_write_pio, HD_CFA_OK },
1991 [WIN_WRITEDMA_EXT] = { cmd_write_dma, HD_CFA_OK },
1992 [CFA_WRITE_SECT_WO_ERASE] = { cmd_write_pio, CFA_OK },
1993 [WIN_MULTWRITE_EXT] = { cmd_write_multiple, HD_CFA_OK },
1994 [WIN_WRITE_VERIFY] = { cmd_write_pio, HD_CFA_OK },
1995 [WIN_VERIFY] = { cmd_verify, HD_CFA_OK | SET_DSC },
1996 [WIN_VERIFY_ONCE] = { cmd_verify, HD_CFA_OK | SET_DSC },
1997 [WIN_VERIFY_EXT] = { cmd_verify, HD_CFA_OK | SET_DSC },
1998 [WIN_SEEK] = { cmd_seek, HD_CFA_OK | SET_DSC },
1999 [CFA_TRANSLATE_SECTOR] = { cmd_cfa_translate_sector, CFA_OK },
2000 [WIN_DIAGNOSE] = { cmd_exec_dev_diagnostic, ALL_OK },
2001 [WIN_SPECIFY] = { cmd_nop, HD_CFA_OK | SET_DSC },
2002 [WIN_STANDBYNOW2] = { cmd_nop, HD_CFA_OK },
2003 [WIN_IDLEIMMEDIATE2] = { cmd_nop, HD_CFA_OK },
2004 [WIN_STANDBY2] = { cmd_nop, HD_CFA_OK },
2005 [WIN_SETIDLE2] = { cmd_nop, HD_CFA_OK },
2006 [WIN_CHECKPOWERMODE2] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2007 [WIN_SLEEPNOW2] = { cmd_nop, HD_CFA_OK },
2008 [WIN_PACKETCMD] = { cmd_packet, CD_OK },
2009 [WIN_PIDENTIFY] = { cmd_identify_packet, CD_OK },
2010 [WIN_SMART] = { cmd_smart, HD_CFA_OK | SET_DSC },
2011 [CFA_ACCESS_METADATA_STORAGE] = { cmd_cfa_access_metadata_storage, CFA_OK },
2012 [CFA_ERASE_SECTORS] = { cmd_cfa_erase_sectors, CFA_OK | SET_DSC },
2013 [WIN_MULTREAD] = { cmd_read_multiple, HD_CFA_OK },
2014 [WIN_MULTWRITE] = { cmd_write_multiple, HD_CFA_OK },
2015 [WIN_SETMULT] = { cmd_set_multiple_mode, HD_CFA_OK | SET_DSC },
2016 [WIN_READDMA] = { cmd_read_dma, HD_CFA_OK },
2017 [WIN_READDMA_ONCE] = { cmd_read_dma, HD_CFA_OK },
2018 [WIN_WRITEDMA] = { cmd_write_dma, HD_CFA_OK },
2019 [WIN_WRITEDMA_ONCE] = { cmd_write_dma, HD_CFA_OK },
2020 [CFA_WRITE_MULTI_WO_ERASE] = { cmd_write_multiple, CFA_OK },
2021 [WIN_STANDBYNOW1] = { cmd_nop, HD_CFA_OK },
2022 [WIN_IDLEIMMEDIATE] = { cmd_nop, HD_CFA_OK },
2023 [WIN_STANDBY] = { cmd_nop, HD_CFA_OK },
2024 [WIN_SETIDLE1] = { cmd_nop, HD_CFA_OK },
2025 [WIN_CHECKPOWERMODE1] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2026 [WIN_SLEEPNOW1] = { cmd_nop, HD_CFA_OK },
2027 [WIN_FLUSH_CACHE] = { cmd_flush_cache, ALL_OK },
2028 [WIN_FLUSH_CACHE_EXT] = { cmd_flush_cache, HD_CFA_OK },
2029 [WIN_IDENTIFY] = { cmd_identify, ALL_OK },
2030 [WIN_SETFEATURES] = { cmd_set_features, ALL_OK | SET_DSC },
2031 [IBM_SENSE_CONDITION] = { cmd_ibm_sense_condition, CFA_OK | SET_DSC },
2032 [CFA_WEAR_LEVEL] = { cmd_cfa_erase_sectors, HD_CFA_OK | SET_DSC },
2033 [WIN_READ_NATIVE_MAX] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
2034 };
2035
2036 static bool ide_cmd_permitted(IDEState *s, uint32_t cmd)
2037 {
2038 return cmd < ARRAY_SIZE(ide_cmd_table)
2039 && (ide_cmd_table[cmd].flags & (1u << s->drive_kind));
2040 }
2041
2042 void ide_exec_cmd(IDEBus *bus, uint32_t val)
2043 {
2044 IDEState *s;
2045 bool complete;
2046
2047 s = idebus_active_if(bus);
2048 trace_ide_exec_cmd(bus, s, val);
2049
2050 /* ignore commands to non existent slave */
2051 if (s != bus->ifs && !s->blk) {
2052 return;
2053 }
2054
2055 /* Only RESET is allowed while BSY and/or DRQ are set,
2056 * and only to ATAPI devices. */
2057 if (s->status & (BUSY_STAT|DRQ_STAT)) {
2058 if (val != WIN_DEVICE_RESET || s->drive_kind != IDE_CD) {
2059 return;
2060 }
2061 }
2062
2063 if (!ide_cmd_permitted(s, val)) {
2064 ide_abort_command(s);
2065 ide_set_irq(s->bus);
2066 return;
2067 }
2068
2069 s->status = READY_STAT | BUSY_STAT;
2070 s->error = 0;
2071 s->io_buffer_offset = 0;
2072
2073 complete = ide_cmd_table[val].handler(s, val);
2074 if (complete) {
2075 s->status &= ~BUSY_STAT;
2076 assert(!!s->error == !!(s->status & ERR_STAT));
2077
2078 if ((ide_cmd_table[val].flags & SET_DSC) && !s->error) {
2079 s->status |= SEEK_STAT;
2080 }
2081
2082 ide_cmd_done(s);
2083 ide_set_irq(s->bus);
2084 }
2085 }
2086
2087 /* IOport [R]ead [R]egisters */
2088 enum ATA_IOPORT_RR {
2089 ATA_IOPORT_RR_DATA = 0,
2090 ATA_IOPORT_RR_ERROR = 1,
2091 ATA_IOPORT_RR_SECTOR_COUNT = 2,
2092 ATA_IOPORT_RR_SECTOR_NUMBER = 3,
2093 ATA_IOPORT_RR_CYLINDER_LOW = 4,
2094 ATA_IOPORT_RR_CYLINDER_HIGH = 5,
2095 ATA_IOPORT_RR_DEVICE_HEAD = 6,
2096 ATA_IOPORT_RR_STATUS = 7,
2097 ATA_IOPORT_RR_NUM_REGISTERS,
2098 };
2099
2100 const char *ATA_IOPORT_RR_lookup[ATA_IOPORT_RR_NUM_REGISTERS] = {
2101 [ATA_IOPORT_RR_DATA] = "Data",
2102 [ATA_IOPORT_RR_ERROR] = "Error",
2103 [ATA_IOPORT_RR_SECTOR_COUNT] = "Sector Count",
2104 [ATA_IOPORT_RR_SECTOR_NUMBER] = "Sector Number",
2105 [ATA_IOPORT_RR_CYLINDER_LOW] = "Cylinder Low",
2106 [ATA_IOPORT_RR_CYLINDER_HIGH] = "Cylinder High",
2107 [ATA_IOPORT_RR_DEVICE_HEAD] = "Device/Head",
2108 [ATA_IOPORT_RR_STATUS] = "Status"
2109 };
2110
2111 uint32_t ide_ioport_read(void *opaque, uint32_t addr)
2112 {
2113 IDEBus *bus = opaque;
2114 IDEState *s = idebus_active_if(bus);
2115 uint32_t reg_num;
2116 int ret, hob;
2117
2118 reg_num = addr & 7;
2119 /* FIXME: HOB readback uses bit 7, but it's always set right now */
2120 //hob = s->select & (1 << 7);
2121 hob = 0;
2122 switch (reg_num) {
2123 case ATA_IOPORT_RR_DATA:
2124 ret = 0xff;
2125 break;
2126 case ATA_IOPORT_RR_ERROR:
2127 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2128 (s != bus->ifs && !s->blk)) {
2129 ret = 0;
2130 } else if (!hob) {
2131 ret = s->error;
2132 } else {
2133 ret = s->hob_feature;
2134 }
2135 break;
2136 case ATA_IOPORT_RR_SECTOR_COUNT:
2137 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2138 ret = 0;
2139 } else if (!hob) {
2140 ret = s->nsector & 0xff;
2141 } else {
2142 ret = s->hob_nsector;
2143 }
2144 break;
2145 case ATA_IOPORT_RR_SECTOR_NUMBER:
2146 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2147 ret = 0;
2148 } else if (!hob) {
2149 ret = s->sector;
2150 } else {
2151 ret = s->hob_sector;
2152 }
2153 break;
2154 case ATA_IOPORT_RR_CYLINDER_LOW:
2155 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2156 ret = 0;
2157 } else if (!hob) {
2158 ret = s->lcyl;
2159 } else {
2160 ret = s->hob_lcyl;
2161 }
2162 break;
2163 case ATA_IOPORT_RR_CYLINDER_HIGH:
2164 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2165 ret = 0;
2166 } else if (!hob) {
2167 ret = s->hcyl;
2168 } else {
2169 ret = s->hob_hcyl;
2170 }
2171 break;
2172 case ATA_IOPORT_RR_DEVICE_HEAD:
2173 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2174 ret = 0;
2175 } else {
2176 ret = s->select;
2177 }
2178 break;
2179 default:
2180 case ATA_IOPORT_RR_STATUS:
2181 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2182 (s != bus->ifs && !s->blk)) {
2183 ret = 0;
2184 } else {
2185 ret = s->status;
2186 }
2187 qemu_irq_lower(bus->irq);
2188 break;
2189 }
2190
2191 trace_ide_ioport_read(addr, ATA_IOPORT_RR_lookup[reg_num], ret, bus, s);
2192 return ret;
2193 }
2194
2195 uint32_t ide_status_read(void *opaque, uint32_t addr)
2196 {
2197 IDEBus *bus = opaque;
2198 IDEState *s = idebus_active_if(bus);
2199 int ret;
2200
2201 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2202 (s != bus->ifs && !s->blk)) {
2203 ret = 0;
2204 } else {
2205 ret = s->status;
2206 }
2207
2208 trace_ide_status_read(addr, ret, bus, s);
2209 return ret;
2210 }
2211
2212 void ide_cmd_write(void *opaque, uint32_t addr, uint32_t val)
2213 {
2214 IDEBus *bus = opaque;
2215 IDEState *s;
2216 int i;
2217
2218 trace_ide_cmd_write(addr, val, bus);
2219
2220 /* common for both drives */
2221 if (!(bus->cmd & IDE_CMD_RESET) &&
2222 (val & IDE_CMD_RESET)) {
2223 /* reset low to high */
2224 for(i = 0;i < 2; i++) {
2225 s = &bus->ifs[i];
2226 s->status = BUSY_STAT | SEEK_STAT;
2227 s->error = 0x01;
2228 }
2229 } else if ((bus->cmd & IDE_CMD_RESET) &&
2230 !(val & IDE_CMD_RESET)) {
2231 /* high to low */
2232 for(i = 0;i < 2; i++) {
2233 s = &bus->ifs[i];
2234 if (s->drive_kind == IDE_CD)
2235 s->status = 0x00; /* NOTE: READY is _not_ set */
2236 else
2237 s->status = READY_STAT | SEEK_STAT;
2238 ide_set_signature(s);
2239 }
2240 }
2241
2242 bus->cmd = val;
2243 }
2244
2245 /*
2246 * Returns true if the running PIO transfer is a PIO out (i.e. data is
2247 * transferred from the device to the guest), false if it's a PIO in
2248 */
2249 static bool ide_is_pio_out(IDEState *s)
2250 {
2251 if (s->end_transfer_func == ide_sector_write ||
2252 s->end_transfer_func == ide_atapi_cmd) {
2253 return false;
2254 } else if (s->end_transfer_func == ide_sector_read ||
2255 s->end_transfer_func == ide_transfer_stop ||
2256 s->end_transfer_func == ide_atapi_cmd_reply_end ||
2257 s->end_transfer_func == ide_dummy_transfer_stop) {
2258 return true;
2259 }
2260
2261 abort();
2262 }
2263
2264 void ide_data_writew(void *opaque, uint32_t addr, uint32_t val)
2265 {
2266 IDEBus *bus = opaque;
2267 IDEState *s = idebus_active_if(bus);
2268 uint8_t *p;
2269
2270 trace_ide_data_writew(addr, val, bus, s);
2271
2272 /* PIO data access allowed only when DRQ bit is set. The result of a write
2273 * during PIO out is indeterminate, just ignore it. */
2274 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2275 return;
2276 }
2277
2278 p = s->data_ptr;
2279 if (p + 2 > s->data_end) {
2280 return;
2281 }
2282
2283 *(uint16_t *)p = le16_to_cpu(val);
2284 p += 2;
2285 s->data_ptr = p;
2286 if (p >= s->data_end) {
2287 s->status &= ~DRQ_STAT;
2288 s->end_transfer_func(s);
2289 }
2290 }
2291
2292 uint32_t ide_data_readw(void *opaque, uint32_t addr)
2293 {
2294 IDEBus *bus = opaque;
2295 IDEState *s = idebus_active_if(bus);
2296 uint8_t *p;
2297 int ret;
2298
2299 /* PIO data access allowed only when DRQ bit is set. The result of a read
2300 * during PIO in is indeterminate, return 0 and don't move forward. */
2301 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2302 return 0;
2303 }
2304
2305 p = s->data_ptr;
2306 if (p + 2 > s->data_end) {
2307 return 0;
2308 }
2309
2310 ret = cpu_to_le16(*(uint16_t *)p);
2311 p += 2;
2312 s->data_ptr = p;
2313 if (p >= s->data_end) {
2314 s->status &= ~DRQ_STAT;
2315 s->end_transfer_func(s);
2316 }
2317
2318 trace_ide_data_readw(addr, ret, bus, s);
2319 return ret;
2320 }
2321
2322 void ide_data_writel(void *opaque, uint32_t addr, uint32_t val)
2323 {
2324 IDEBus *bus = opaque;
2325 IDEState *s = idebus_active_if(bus);
2326 uint8_t *p;
2327
2328 trace_ide_data_writel(addr, val, bus, s);
2329
2330 /* PIO data access allowed only when DRQ bit is set. The result of a write
2331 * during PIO out is indeterminate, just ignore it. */
2332 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2333 return;
2334 }
2335
2336 p = s->data_ptr;
2337 if (p + 4 > s->data_end) {
2338 return;
2339 }
2340
2341 *(uint32_t *)p = le32_to_cpu(val);
2342 p += 4;
2343 s->data_ptr = p;
2344 if (p >= s->data_end) {
2345 s->status &= ~DRQ_STAT;
2346 s->end_transfer_func(s);
2347 }
2348 }
2349
2350 uint32_t ide_data_readl(void *opaque, uint32_t addr)
2351 {
2352 IDEBus *bus = opaque;
2353 IDEState *s = idebus_active_if(bus);
2354 uint8_t *p;
2355 int ret;
2356
2357 /* PIO data access allowed only when DRQ bit is set. The result of a read
2358 * during PIO in is indeterminate, return 0 and don't move forward. */
2359 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2360 ret = 0;
2361 goto out;
2362 }
2363
2364 p = s->data_ptr;
2365 if (p + 4 > s->data_end) {
2366 return 0;
2367 }
2368
2369 ret = cpu_to_le32(*(uint32_t *)p);
2370 p += 4;
2371 s->data_ptr = p;
2372 if (p >= s->data_end) {
2373 s->status &= ~DRQ_STAT;
2374 s->end_transfer_func(s);
2375 }
2376
2377 out:
2378 trace_ide_data_readl(addr, ret, bus, s);
2379 return ret;
2380 }
2381
2382 static void ide_dummy_transfer_stop(IDEState *s)
2383 {
2384 s->data_ptr = s->io_buffer;
2385 s->data_end = s->io_buffer;
2386 s->io_buffer[0] = 0xff;
2387 s->io_buffer[1] = 0xff;
2388 s->io_buffer[2] = 0xff;
2389 s->io_buffer[3] = 0xff;
2390 }
2391
2392 void ide_bus_reset(IDEBus *bus)
2393 {
2394 bus->unit = 0;
2395 bus->cmd = 0;
2396 ide_reset(&bus->ifs[0]);
2397 ide_reset(&bus->ifs[1]);
2398 ide_clear_hob(bus);
2399
2400 /* pending async DMA */
2401 if (bus->dma->aiocb) {
2402 trace_ide_bus_reset_aio();
2403 blk_aio_cancel(bus->dma->aiocb);
2404 bus->dma->aiocb = NULL;
2405 }
2406
2407 /* reset dma provider too */
2408 if (bus->dma->ops->reset) {
2409 bus->dma->ops->reset(bus->dma);
2410 }
2411 }
2412
2413 static bool ide_cd_is_tray_open(void *opaque)
2414 {
2415 return ((IDEState *)opaque)->tray_open;
2416 }
2417
2418 static bool ide_cd_is_medium_locked(void *opaque)
2419 {
2420 return ((IDEState *)opaque)->tray_locked;
2421 }
2422
2423 static void ide_resize_cb(void *opaque)
2424 {
2425 IDEState *s = opaque;
2426 uint64_t nb_sectors;
2427
2428 if (!s->identify_set) {
2429 return;
2430 }
2431
2432 blk_get_geometry(s->blk, &nb_sectors);
2433 s->nb_sectors = nb_sectors;
2434
2435 /* Update the identify data buffer. */
2436 if (s->drive_kind == IDE_CFATA) {
2437 ide_cfata_identify_size(s);
2438 } else {
2439 /* IDE_CD uses a different set of callbacks entirely. */
2440 assert(s->drive_kind != IDE_CD);
2441 ide_identify_size(s);
2442 }
2443 }
2444
2445 static const BlockDevOps ide_cd_block_ops = {
2446 .change_media_cb = ide_cd_change_cb,
2447 .eject_request_cb = ide_cd_eject_request_cb,
2448 .is_tray_open = ide_cd_is_tray_open,
2449 .is_medium_locked = ide_cd_is_medium_locked,
2450 };
2451
2452 static const BlockDevOps ide_hd_block_ops = {
2453 .resize_cb = ide_resize_cb,
2454 };
2455
2456 int ide_init_drive(IDEState *s, BlockBackend *blk, IDEDriveKind kind,
2457 const char *version, const char *serial, const char *model,
2458 uint64_t wwn,
2459 uint32_t cylinders, uint32_t heads, uint32_t secs,
2460 int chs_trans, Error **errp)
2461 {
2462 uint64_t nb_sectors;
2463
2464 s->blk = blk;
2465 s->drive_kind = kind;
2466
2467 blk_get_geometry(blk, &nb_sectors);
2468 s->cylinders = cylinders;
2469 s->heads = heads;
2470 s->sectors = secs;
2471 s->chs_trans = chs_trans;
2472 s->nb_sectors = nb_sectors;
2473 s->wwn = wwn;
2474 /* The SMART values should be preserved across power cycles
2475 but they aren't. */
2476 s->smart_enabled = 1;
2477 s->smart_autosave = 1;
2478 s->smart_errors = 0;
2479 s->smart_selftest_count = 0;
2480 if (kind == IDE_CD) {
2481 blk_set_dev_ops(blk, &ide_cd_block_ops, s);
2482 blk_set_guest_block_size(blk, 2048);
2483 } else {
2484 if (!blk_is_inserted(s->blk)) {
2485 error_setg(errp, "Device needs media, but drive is empty");
2486 return -1;
2487 }
2488 if (blk_is_read_only(blk)) {
2489 error_setg(errp, "Can't use a read-only drive");
2490 return -1;
2491 }
2492 blk_set_dev_ops(blk, &ide_hd_block_ops, s);
2493 }
2494 if (serial) {
2495 pstrcpy(s->drive_serial_str, sizeof(s->drive_serial_str), serial);
2496 } else {
2497 snprintf(s->drive_serial_str, sizeof(s->drive_serial_str),
2498 "QM%05d", s->drive_serial);
2499 }
2500 if (model) {
2501 pstrcpy(s->drive_model_str, sizeof(s->drive_model_str), model);
2502 } else {
2503 switch (kind) {
2504 case IDE_CD:
2505 strcpy(s->drive_model_str, "QEMU DVD-ROM");
2506 break;
2507 case IDE_CFATA:
2508 strcpy(s->drive_model_str, "QEMU MICRODRIVE");
2509 break;
2510 default:
2511 strcpy(s->drive_model_str, "QEMU HARDDISK");
2512 break;
2513 }
2514 }
2515
2516 if (version) {
2517 pstrcpy(s->version, sizeof(s->version), version);
2518 } else {
2519 pstrcpy(s->version, sizeof(s->version), qemu_hw_version());
2520 }
2521
2522 ide_reset(s);
2523 blk_iostatus_enable(blk);
2524 return 0;
2525 }
2526
2527 static void ide_init1(IDEBus *bus, int unit)
2528 {
2529 static int drive_serial = 1;
2530 IDEState *s = &bus->ifs[unit];
2531
2532 s->bus = bus;
2533 s->unit = unit;
2534 s->drive_serial = drive_serial++;
2535 /* we need at least 2k alignment for accessing CDROMs using O_DIRECT */
2536 s->io_buffer_total_len = IDE_DMA_BUF_SECTORS*512 + 4;
2537 s->io_buffer = qemu_memalign(2048, s->io_buffer_total_len);
2538 memset(s->io_buffer, 0, s->io_buffer_total_len);
2539
2540 s->smart_selftest_data = blk_blockalign(s->blk, 512);
2541 memset(s->smart_selftest_data, 0, 512);
2542
2543 s->sector_write_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
2544 ide_sector_write_timer_cb, s);
2545 }
2546
2547 static int ide_nop_int(IDEDMA *dma, int x)
2548 {
2549 return 0;
2550 }
2551
2552 static void ide_nop(IDEDMA *dma)
2553 {
2554 }
2555
2556 static int32_t ide_nop_int32(IDEDMA *dma, int32_t l)
2557 {
2558 return 0;
2559 }
2560
2561 static const IDEDMAOps ide_dma_nop_ops = {
2562 .prepare_buf = ide_nop_int32,
2563 .restart_dma = ide_nop,
2564 .rw_buf = ide_nop_int,
2565 };
2566
2567 static void ide_restart_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
2568 {
2569 s->unit = s->bus->retry_unit;
2570 ide_set_sector(s, s->bus->retry_sector_num);
2571 s->nsector = s->bus->retry_nsector;
2572 s->bus->dma->ops->restart_dma(s->bus->dma);
2573 s->io_buffer_size = 0;
2574 s->dma_cmd = dma_cmd;
2575 ide_start_dma(s, ide_dma_cb);
2576 }
2577
2578 static void ide_restart_bh(void *opaque)
2579 {
2580 IDEBus *bus = opaque;
2581 IDEState *s;
2582 bool is_read;
2583 int error_status;
2584
2585 qemu_bh_delete(bus->bh);
2586 bus->bh = NULL;
2587
2588 error_status = bus->error_status;
2589 if (bus->error_status == 0) {
2590 return;
2591 }
2592
2593 s = idebus_active_if(bus);
2594 is_read = (bus->error_status & IDE_RETRY_READ) != 0;
2595
2596 /* The error status must be cleared before resubmitting the request: The
2597 * request may fail again, and this case can only be distinguished if the
2598 * called function can set a new error status. */
2599 bus->error_status = 0;
2600
2601 /* The HBA has generically asked to be kicked on retry */
2602 if (error_status & IDE_RETRY_HBA) {
2603 if (s->bus->dma->ops->restart) {
2604 s->bus->dma->ops->restart(s->bus->dma);
2605 }
2606 } else if (IS_IDE_RETRY_DMA(error_status)) {
2607 if (error_status & IDE_RETRY_TRIM) {
2608 ide_restart_dma(s, IDE_DMA_TRIM);
2609 } else {
2610 ide_restart_dma(s, is_read ? IDE_DMA_READ : IDE_DMA_WRITE);
2611 }
2612 } else if (IS_IDE_RETRY_PIO(error_status)) {
2613 if (is_read) {
2614 ide_sector_read(s);
2615 } else {
2616 ide_sector_write(s);
2617 }
2618 } else if (error_status & IDE_RETRY_FLUSH) {
2619 ide_flush_cache(s);
2620 } else if (IS_IDE_RETRY_ATAPI(error_status)) {
2621 assert(s->end_transfer_func == ide_atapi_cmd);
2622 ide_atapi_dma_restart(s);
2623 } else {
2624 abort();
2625 }
2626 }
2627
2628 static void ide_restart_cb(void *opaque, int running, RunState state)
2629 {
2630 IDEBus *bus = opaque;
2631
2632 if (!running)
2633 return;
2634
2635 if (!bus->bh) {
2636 bus->bh = qemu_bh_new(ide_restart_bh, bus);
2637 qemu_bh_schedule(bus->bh);
2638 }
2639 }
2640
2641 void ide_register_restart_cb(IDEBus *bus)
2642 {
2643 if (bus->dma->ops->restart_dma) {
2644 bus->vmstate = qemu_add_vm_change_state_handler(ide_restart_cb, bus);
2645 }
2646 }
2647
2648 static IDEDMA ide_dma_nop = {
2649 .ops = &ide_dma_nop_ops,
2650 .aiocb = NULL,
2651 };
2652
2653 void ide_init2(IDEBus *bus, qemu_irq irq)
2654 {
2655 int i;
2656
2657 for(i = 0; i < 2; i++) {
2658 ide_init1(bus, i);
2659 ide_reset(&bus->ifs[i]);
2660 }
2661 bus->irq = irq;
2662 bus->dma = &ide_dma_nop;
2663 }
2664
2665 void ide_exit(IDEState *s)
2666 {
2667 timer_del(s->sector_write_timer);
2668 timer_free(s->sector_write_timer);
2669 qemu_vfree(s->smart_selftest_data);
2670 qemu_vfree(s->io_buffer);
2671 }
2672
2673 static bool is_identify_set(void *opaque, int version_id)
2674 {
2675 IDEState *s = opaque;
2676
2677 return s->identify_set != 0;
2678 }
2679
2680 static EndTransferFunc* transfer_end_table[] = {
2681 ide_sector_read,
2682 ide_sector_write,
2683 ide_transfer_stop,
2684 ide_atapi_cmd_reply_end,
2685 ide_atapi_cmd,
2686 ide_dummy_transfer_stop,
2687 };
2688
2689 static int transfer_end_table_idx(EndTransferFunc *fn)
2690 {
2691 int i;
2692
2693 for (i = 0; i < ARRAY_SIZE(transfer_end_table); i++)
2694 if (transfer_end_table[i] == fn)
2695 return i;
2696
2697 return -1;
2698 }
2699
2700 static int ide_drive_post_load(void *opaque, int version_id)
2701 {
2702 IDEState *s = opaque;
2703
2704 if (s->blk && s->identify_set) {
2705 blk_set_enable_write_cache(s->blk, !!(s->identify_data[85] & (1 << 5)));
2706 }
2707 return 0;
2708 }
2709
2710 static int ide_drive_pio_post_load(void *opaque, int version_id)
2711 {
2712 IDEState *s = opaque;
2713
2714 if (s->end_transfer_fn_idx >= ARRAY_SIZE(transfer_end_table)) {
2715 return -EINVAL;
2716 }
2717 s->end_transfer_func = transfer_end_table[s->end_transfer_fn_idx];
2718 s->data_ptr = s->io_buffer + s->cur_io_buffer_offset;
2719 s->data_end = s->data_ptr + s->cur_io_buffer_len;
2720 s->atapi_dma = s->feature & 1; /* as per cmd_packet */
2721
2722 return 0;
2723 }
2724
2725 static int ide_drive_pio_pre_save(void *opaque)
2726 {
2727 IDEState *s = opaque;
2728 int idx;
2729
2730 s->cur_io_buffer_offset = s->data_ptr - s->io_buffer;
2731 s->cur_io_buffer_len = s->data_end - s->data_ptr;
2732
2733 idx = transfer_end_table_idx(s->end_transfer_func);
2734 if (idx == -1) {
2735 fprintf(stderr, "%s: invalid end_transfer_func for DRQ_STAT\n",
2736 __func__);
2737 s->end_transfer_fn_idx = 2;
2738 } else {
2739 s->end_transfer_fn_idx = idx;
2740 }
2741
2742 return 0;
2743 }
2744
2745 static bool ide_drive_pio_state_needed(void *opaque)
2746 {
2747 IDEState *s = opaque;
2748
2749 return ((s->status & DRQ_STAT) != 0)
2750 || (s->bus->error_status & IDE_RETRY_PIO);
2751 }
2752
2753 static bool ide_tray_state_needed(void *opaque)
2754 {
2755 IDEState *s = opaque;
2756
2757 return s->tray_open || s->tray_locked;
2758 }
2759
2760 static bool ide_atapi_gesn_needed(void *opaque)
2761 {
2762 IDEState *s = opaque;
2763
2764 return s->events.new_media || s->events.eject_request;
2765 }
2766
2767 static bool ide_error_needed(void *opaque)
2768 {
2769 IDEBus *bus = opaque;
2770
2771 return (bus->error_status != 0);
2772 }
2773
2774 /* Fields for GET_EVENT_STATUS_NOTIFICATION ATAPI command */
2775 static const VMStateDescription vmstate_ide_atapi_gesn_state = {
2776 .name ="ide_drive/atapi/gesn_state",
2777 .version_id = 1,
2778 .minimum_version_id = 1,
2779 .needed = ide_atapi_gesn_needed,
2780 .fields = (VMStateField[]) {
2781 VMSTATE_BOOL(events.new_media, IDEState),
2782 VMSTATE_BOOL(events.eject_request, IDEState),
2783 VMSTATE_END_OF_LIST()
2784 }
2785 };
2786
2787 static const VMStateDescription vmstate_ide_tray_state = {
2788 .name = "ide_drive/tray_state",
2789 .version_id = 1,
2790 .minimum_version_id = 1,
2791 .needed = ide_tray_state_needed,
2792 .fields = (VMStateField[]) {
2793 VMSTATE_BOOL(tray_open, IDEState),
2794 VMSTATE_BOOL(tray_locked, IDEState),
2795 VMSTATE_END_OF_LIST()
2796 }
2797 };
2798
2799 static const VMStateDescription vmstate_ide_drive_pio_state = {
2800 .name = "ide_drive/pio_state",
2801 .version_id = 1,
2802 .minimum_version_id = 1,
2803 .pre_save = ide_drive_pio_pre_save,
2804 .post_load = ide_drive_pio_post_load,
2805 .needed = ide_drive_pio_state_needed,
2806 .fields = (VMStateField[]) {
2807 VMSTATE_INT32(req_nb_sectors, IDEState),
2808 VMSTATE_VARRAY_INT32(io_buffer, IDEState, io_buffer_total_len, 1,
2809 vmstate_info_uint8, uint8_t),
2810 VMSTATE_INT32(cur_io_buffer_offset, IDEState),
2811 VMSTATE_INT32(cur_io_buffer_len, IDEState),
2812 VMSTATE_UINT8(end_transfer_fn_idx, IDEState),
2813 VMSTATE_INT32(elementary_transfer_size, IDEState),
2814 VMSTATE_INT32(packet_transfer_size, IDEState),
2815 VMSTATE_END_OF_LIST()
2816 }
2817 };
2818
2819 const VMStateDescription vmstate_ide_drive = {
2820 .name = "ide_drive",
2821 .version_id = 3,
2822 .minimum_version_id = 0,
2823 .post_load = ide_drive_post_load,
2824 .fields = (VMStateField[]) {
2825 VMSTATE_INT32(mult_sectors, IDEState),
2826 VMSTATE_INT32(identify_set, IDEState),
2827 VMSTATE_BUFFER_TEST(identify_data, IDEState, is_identify_set),
2828 VMSTATE_UINT8(feature, IDEState),
2829 VMSTATE_UINT8(error, IDEState),
2830 VMSTATE_UINT32(nsector, IDEState),
2831 VMSTATE_UINT8(sector, IDEState),
2832 VMSTATE_UINT8(lcyl, IDEState),
2833 VMSTATE_UINT8(hcyl, IDEState),
2834 VMSTATE_UINT8(hob_feature, IDEState),
2835 VMSTATE_UINT8(hob_sector, IDEState),
2836 VMSTATE_UINT8(hob_nsector, IDEState),
2837 VMSTATE_UINT8(hob_lcyl, IDEState),
2838 VMSTATE_UINT8(hob_hcyl, IDEState),
2839 VMSTATE_UINT8(select, IDEState),
2840 VMSTATE_UINT8(status, IDEState),
2841 VMSTATE_UINT8(lba48, IDEState),
2842 VMSTATE_UINT8(sense_key, IDEState),
2843 VMSTATE_UINT8(asc, IDEState),
2844 VMSTATE_UINT8_V(cdrom_changed, IDEState, 3),
2845 VMSTATE_END_OF_LIST()
2846 },
2847 .subsections = (const VMStateDescription*[]) {
2848 &vmstate_ide_drive_pio_state,
2849 &vmstate_ide_tray_state,
2850 &vmstate_ide_atapi_gesn_state,
2851 NULL
2852 }
2853 };
2854
2855 static const VMStateDescription vmstate_ide_error_status = {
2856 .name ="ide_bus/error",
2857 .version_id = 2,
2858 .minimum_version_id = 1,
2859 .needed = ide_error_needed,
2860 .fields = (VMStateField[]) {
2861 VMSTATE_INT32(error_status, IDEBus),
2862 VMSTATE_INT64_V(retry_sector_num, IDEBus, 2),
2863 VMSTATE_UINT32_V(retry_nsector, IDEBus, 2),
2864 VMSTATE_UINT8_V(retry_unit, IDEBus, 2),
2865 VMSTATE_END_OF_LIST()
2866 }
2867 };
2868
2869 const VMStateDescription vmstate_ide_bus = {
2870 .name = "ide_bus",
2871 .version_id = 1,
2872 .minimum_version_id = 1,
2873 .fields = (VMStateField[]) {
2874 VMSTATE_UINT8(cmd, IDEBus),
2875 VMSTATE_UINT8(unit, IDEBus),
2876 VMSTATE_END_OF_LIST()
2877 },
2878 .subsections = (const VMStateDescription*[]) {
2879 &vmstate_ide_error_status,
2880 NULL
2881 }
2882 };
2883
2884 void ide_drive_get(DriveInfo **hd, int n)
2885 {
2886 int i;
2887
2888 for (i = 0; i < n; i++) {
2889 hd[i] = drive_get_by_index(IF_IDE, i);
2890 }
2891 }
AR7 emulation for QEMU