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hw: m25p80: add tests for write protect (WP# and SRWD bit)
[qemu.git] / hw / ide / core.c
blob7cbc0a54a7d25f5d5fdc5e2130ce31f30739f9df
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 "qemu/hw-version.h"
33 #include "qemu/memalign.h"
34 #include "sysemu/sysemu.h"
35 #include "sysemu/blockdev.h"
36 #include "sysemu/dma.h"
37 #include "hw/block/block.h"
38 #include "sysemu/block-backend.h"
39 #include "qapi/error.h"
40 #include "qemu/cutils.h"
41 #include "sysemu/replay.h"
42 #include "sysemu/runstate.h"
43 #include "hw/ide/internal.h"
44 #include "trace.h"
45
46 /* These values were based on a Seagate ST3500418AS but have been modified
47 to make more sense in QEMU */
48 static const int smart_attributes[][12] = {
49 /* id, flags, hflags, val, wrst, raw (6 bytes), threshold */
50 /* raw read error rate*/
51 { 0x01, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06},
52 /* spin up */
53 { 0x03, 0x03, 0x00, 0x64, 0x64, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
54 /* start stop count */
55 { 0x04, 0x02, 0x00, 0x64, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x14},
56 /* remapped sectors */
57 { 0x05, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x24},
58 /* power on hours */
59 { 0x09, 0x03, 0x00, 0x64, 0x64, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
60 /* power cycle count */
61 { 0x0c, 0x03, 0x00, 0x64, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
62 /* airflow-temperature-celsius */
63 { 190, 0x03, 0x00, 0x45, 0x45, 0x1f, 0x00, 0x1f, 0x1f, 0x00, 0x00, 0x32},
64 };
65
66 const char *IDE_DMA_CMD_lookup[IDE_DMA__COUNT] = {
67 [IDE_DMA_READ] = "DMA READ",
68 [IDE_DMA_WRITE] = "DMA WRITE",
69 [IDE_DMA_TRIM] = "DMA TRIM",
70 [IDE_DMA_ATAPI] = "DMA ATAPI"
71 };
72
73 static const char *IDE_DMA_CMD_str(enum ide_dma_cmd enval)
74 {
75 if ((unsigned)enval < IDE_DMA__COUNT) {
76 return IDE_DMA_CMD_lookup[enval];
77 }
78 return "DMA UNKNOWN CMD";
79 }
80
81 static void ide_dummy_transfer_stop(IDEState *s);
82
83 static void padstr(char *str, const char *src, int len)
84 {
85 int i, v;
86 for(i = 0; i < len; i++) {
87 if (*src)
88 v = *src++;
89 else
90 v = ' ';
91 str[i^1] = v;
92 }
93 }
94
95 static void put_le16(uint16_t *p, unsigned int v)
96 {
97 *p = cpu_to_le16(v);
98 }
99
100 static void ide_identify_size(IDEState *s)
101 {
102 uint16_t *p = (uint16_t *)s->identify_data;
103 int64_t nb_sectors_lba28 = s->nb_sectors;
104 if (nb_sectors_lba28 >= 1 << 28) {
105 nb_sectors_lba28 = (1 << 28) - 1;
106 }
107 put_le16(p + 60, nb_sectors_lba28);
108 put_le16(p + 61, nb_sectors_lba28 >> 16);
109 put_le16(p + 100, s->nb_sectors);
110 put_le16(p + 101, s->nb_sectors >> 16);
111 put_le16(p + 102, s->nb_sectors >> 32);
112 put_le16(p + 103, s->nb_sectors >> 48);
113 }
114
115 static void ide_identify(IDEState *s)
116 {
117 uint16_t *p;
118 unsigned int oldsize;
119 IDEDevice *dev = s->unit ? s->bus->slave : s->bus->master;
120
121 p = (uint16_t *)s->identify_data;
122 if (s->identify_set) {
123 goto fill_buffer;
124 }
125 memset(p, 0, sizeof(s->identify_data));
126
127 put_le16(p + 0, 0x0040);
128 put_le16(p + 1, s->cylinders);
129 put_le16(p + 3, s->heads);
130 put_le16(p + 4, 512 * s->sectors); /* XXX: retired, remove ? */
131 put_le16(p + 5, 512); /* XXX: retired, remove ? */
132 put_le16(p + 6, s->sectors);
133 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
134 put_le16(p + 20, 3); /* XXX: retired, remove ? */
135 put_le16(p + 21, 512); /* cache size in sectors */
136 put_le16(p + 22, 4); /* ecc bytes */
137 padstr((char *)(p + 23), s->version, 8); /* firmware version */
138 padstr((char *)(p + 27), s->drive_model_str, 40); /* model */
139 #if MAX_MULT_SECTORS > 1
140 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
141 #endif
142 put_le16(p + 48, 1); /* dword I/O */
143 put_le16(p + 49, (1 << 11) | (1 << 9) | (1 << 8)); /* DMA and LBA supported */
144 put_le16(p + 51, 0x200); /* PIO transfer cycle */
145 put_le16(p + 52, 0x200); /* DMA transfer cycle */
146 put_le16(p + 53, 1 | (1 << 1) | (1 << 2)); /* words 54-58,64-70,88 are valid */
147 put_le16(p + 54, s->cylinders);
148 put_le16(p + 55, s->heads);
149 put_le16(p + 56, s->sectors);
150 oldsize = s->cylinders * s->heads * s->sectors;
151 put_le16(p + 57, oldsize);
152 put_le16(p + 58, oldsize >> 16);
153 if (s->mult_sectors)
154 put_le16(p + 59, 0x100 | s->mult_sectors);
155 /* *(p + 60) := nb_sectors -- see ide_identify_size */
156 /* *(p + 61) := nb_sectors >> 16 -- see ide_identify_size */
157 put_le16(p + 62, 0x07); /* single word dma0-2 supported */
158 put_le16(p + 63, 0x07); /* mdma0-2 supported */
159 put_le16(p + 64, 0x03); /* pio3-4 supported */
160 put_le16(p + 65, 120);
161 put_le16(p + 66, 120);
162 put_le16(p + 67, 120);
163 put_le16(p + 68, 120);
164 if (dev && dev->conf.discard_granularity) {
165 put_le16(p + 69, (1 << 14)); /* determinate TRIM behavior */
166 }
167
168 if (s->ncq_queues) {
169 put_le16(p + 75, s->ncq_queues - 1);
170 /* NCQ supported */
171 put_le16(p + 76, (1 << 8));
172 }
173
174 put_le16(p + 80, 0xf0); /* ata3 -> ata6 supported */
175 put_le16(p + 81, 0x16); /* conforms to ata5 */
176 /* 14=NOP supported, 5=WCACHE supported, 0=SMART supported */
177 put_le16(p + 82, (1 << 14) | (1 << 5) | 1);
178 /* 13=flush_cache_ext,12=flush_cache,10=lba48 */
179 put_le16(p + 83, (1 << 14) | (1 << 13) | (1 <<12) | (1 << 10));
180 /* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
181 if (s->wwn) {
182 put_le16(p + 84, (1 << 14) | (1 << 8) | 0);
183 } else {
184 put_le16(p + 84, (1 << 14) | 0);
185 }
186 /* 14 = NOP supported, 5=WCACHE enabled, 0=SMART feature set enabled */
187 if (blk_enable_write_cache(s->blk)) {
188 put_le16(p + 85, (1 << 14) | (1 << 5) | 1);
189 } else {
190 put_le16(p + 85, (1 << 14) | 1);
191 }
192 /* 13=flush_cache_ext,12=flush_cache,10=lba48 */
193 put_le16(p + 86, (1 << 13) | (1 <<12) | (1 << 10));
194 /* 14=set to 1, 8=has WWN, 1=SMART self test, 0=SMART error logging */
195 if (s->wwn) {
196 put_le16(p + 87, (1 << 14) | (1 << 8) | 0);
197 } else {
198 put_le16(p + 87, (1 << 14) | 0);
199 }
200 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
201 put_le16(p + 93, 1 | (1 << 14) | 0x2000);
202 /* *(p + 100) := nb_sectors -- see ide_identify_size */
203 /* *(p + 101) := nb_sectors >> 16 -- see ide_identify_size */
204 /* *(p + 102) := nb_sectors >> 32 -- see ide_identify_size */
205 /* *(p + 103) := nb_sectors >> 48 -- see ide_identify_size */
206
207 if (dev && dev->conf.physical_block_size)
208 put_le16(p + 106, 0x6000 | get_physical_block_exp(&dev->conf));
209 if (s->wwn) {
210 /* LE 16-bit words 111-108 contain 64-bit World Wide Name */
211 put_le16(p + 108, s->wwn >> 48);
212 put_le16(p + 109, s->wwn >> 32);
213 put_le16(p + 110, s->wwn >> 16);
214 put_le16(p + 111, s->wwn);
215 }
216 if (dev && dev->conf.discard_granularity) {
217 put_le16(p + 169, 1); /* TRIM support */
218 }
219 if (dev) {
220 put_le16(p + 217, dev->rotation_rate); /* Nominal media rotation rate */
221 }
222
223 ide_identify_size(s);
224 s->identify_set = 1;
225
226 fill_buffer:
227 memcpy(s->io_buffer, p, sizeof(s->identify_data));
228 }
229
230 static void ide_atapi_identify(IDEState *s)
231 {
232 uint16_t *p;
233
234 p = (uint16_t *)s->identify_data;
235 if (s->identify_set) {
236 goto fill_buffer;
237 }
238 memset(p, 0, sizeof(s->identify_data));
239
240 /* Removable CDROM, 50us response, 12 byte packets */
241 put_le16(p + 0, (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0));
242 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
243 put_le16(p + 20, 3); /* buffer type */
244 put_le16(p + 21, 512); /* cache size in sectors */
245 put_le16(p + 22, 4); /* ecc bytes */
246 padstr((char *)(p + 23), s->version, 8); /* firmware version */
247 padstr((char *)(p + 27), s->drive_model_str, 40); /* model */
248 put_le16(p + 48, 1); /* dword I/O (XXX: should not be set on CDROM) */
249 #ifdef USE_DMA_CDROM
250 put_le16(p + 49, 1 << 9 | 1 << 8); /* DMA and LBA supported */
251 put_le16(p + 53, 7); /* words 64-70, 54-58, 88 valid */
252 put_le16(p + 62, 7); /* single word dma0-2 supported */
253 put_le16(p + 63, 7); /* mdma0-2 supported */
254 #else
255 put_le16(p + 49, 1 << 9); /* LBA supported, no DMA */
256 put_le16(p + 53, 3); /* words 64-70, 54-58 valid */
257 put_le16(p + 63, 0x103); /* DMA modes XXX: may be incorrect */
258 #endif
259 put_le16(p + 64, 3); /* pio3-4 supported */
260 put_le16(p + 65, 0xb4); /* minimum DMA multiword tx cycle time */
261 put_le16(p + 66, 0xb4); /* recommended DMA multiword tx cycle time */
262 put_le16(p + 67, 0x12c); /* minimum PIO cycle time without flow control */
263 put_le16(p + 68, 0xb4); /* minimum PIO cycle time with IORDY flow control */
264
265 put_le16(p + 71, 30); /* in ns */
266 put_le16(p + 72, 30); /* in ns */
267
268 if (s->ncq_queues) {
269 put_le16(p + 75, s->ncq_queues - 1);
270 /* NCQ supported */
271 put_le16(p + 76, (1 << 8));
272 }
273
274 put_le16(p + 80, 0x1e); /* support up to ATA/ATAPI-4 */
275 if (s->wwn) {
276 put_le16(p + 84, (1 << 8)); /* supports WWN for words 108-111 */
277 put_le16(p + 87, (1 << 8)); /* WWN enabled */
278 }
279
280 #ifdef USE_DMA_CDROM
281 put_le16(p + 88, 0x3f | (1 << 13)); /* udma5 set and supported */
282 #endif
283
284 if (s->wwn) {
285 /* LE 16-bit words 111-108 contain 64-bit World Wide Name */
286 put_le16(p + 108, s->wwn >> 48);
287 put_le16(p + 109, s->wwn >> 32);
288 put_le16(p + 110, s->wwn >> 16);
289 put_le16(p + 111, s->wwn);
290 }
291
292 s->identify_set = 1;
293
294 fill_buffer:
295 memcpy(s->io_buffer, p, sizeof(s->identify_data));
296 }
297
298 static void ide_cfata_identify_size(IDEState *s)
299 {
300 uint16_t *p = (uint16_t *)s->identify_data;
301 put_le16(p + 7, s->nb_sectors >> 16); /* Sectors per card */
302 put_le16(p + 8, s->nb_sectors); /* Sectors per card */
303 put_le16(p + 60, s->nb_sectors); /* Total LBA sectors */
304 put_le16(p + 61, s->nb_sectors >> 16); /* Total LBA sectors */
305 }
306
307 static void ide_cfata_identify(IDEState *s)
308 {
309 uint16_t *p;
310 uint32_t cur_sec;
311
312 p = (uint16_t *)s->identify_data;
313 if (s->identify_set) {
314 goto fill_buffer;
315 }
316 memset(p, 0, sizeof(s->identify_data));
317
318 cur_sec = s->cylinders * s->heads * s->sectors;
319
320 put_le16(p + 0, 0x848a); /* CF Storage Card signature */
321 put_le16(p + 1, s->cylinders); /* Default cylinders */
322 put_le16(p + 3, s->heads); /* Default heads */
323 put_le16(p + 6, s->sectors); /* Default sectors per track */
324 /* *(p + 7) := nb_sectors >> 16 -- see ide_cfata_identify_size */
325 /* *(p + 8) := nb_sectors -- see ide_cfata_identify_size */
326 padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */
327 put_le16(p + 22, 0x0004); /* ECC bytes */
328 padstr((char *) (p + 23), s->version, 8); /* Firmware Revision */
329 padstr((char *) (p + 27), s->drive_model_str, 40);/* Model number */
330 #if MAX_MULT_SECTORS > 1
331 put_le16(p + 47, 0x8000 | MAX_MULT_SECTORS);
332 #else
333 put_le16(p + 47, 0x0000);
334 #endif
335 put_le16(p + 49, 0x0f00); /* Capabilities */
336 put_le16(p + 51, 0x0002); /* PIO cycle timing mode */
337 put_le16(p + 52, 0x0001); /* DMA cycle timing mode */
338 put_le16(p + 53, 0x0003); /* Translation params valid */
339 put_le16(p + 54, s->cylinders); /* Current cylinders */
340 put_le16(p + 55, s->heads); /* Current heads */
341 put_le16(p + 56, s->sectors); /* Current sectors */
342 put_le16(p + 57, cur_sec); /* Current capacity */
343 put_le16(p + 58, cur_sec >> 16); /* Current capacity */
344 if (s->mult_sectors) /* Multiple sector setting */
345 put_le16(p + 59, 0x100 | s->mult_sectors);
346 /* *(p + 60) := nb_sectors -- see ide_cfata_identify_size */
347 /* *(p + 61) := nb_sectors >> 16 -- see ide_cfata_identify_size */
348 put_le16(p + 63, 0x0203); /* Multiword DMA capability */
349 put_le16(p + 64, 0x0001); /* Flow Control PIO support */
350 put_le16(p + 65, 0x0096); /* Min. Multiword DMA cycle */
351 put_le16(p + 66, 0x0096); /* Rec. Multiword DMA cycle */
352 put_le16(p + 68, 0x00b4); /* Min. PIO cycle time */
353 put_le16(p + 82, 0x400c); /* Command Set supported */
354 put_le16(p + 83, 0x7068); /* Command Set supported */
355 put_le16(p + 84, 0x4000); /* Features supported */
356 put_le16(p + 85, 0x000c); /* Command Set enabled */
357 put_le16(p + 86, 0x7044); /* Command Set enabled */
358 put_le16(p + 87, 0x4000); /* Features enabled */
359 put_le16(p + 91, 0x4060); /* Current APM level */
360 put_le16(p + 129, 0x0002); /* Current features option */
361 put_le16(p + 130, 0x0005); /* Reassigned sectors */
362 put_le16(p + 131, 0x0001); /* Initial power mode */
363 put_le16(p + 132, 0x0000); /* User signature */
364 put_le16(p + 160, 0x8100); /* Power requirement */
365 put_le16(p + 161, 0x8001); /* CF command set */
366
367 ide_cfata_identify_size(s);
368 s->identify_set = 1;
369
370 fill_buffer:
371 memcpy(s->io_buffer, p, sizeof(s->identify_data));
372 }
373
374 static void ide_set_signature(IDEState *s)
375 {
376 s->select &= ~(ATA_DEV_HS); /* clear head */
377 /* put signature */
378 s->nsector = 1;
379 s->sector = 1;
380 if (s->drive_kind == IDE_CD) {
381 s->lcyl = 0x14;
382 s->hcyl = 0xeb;
383 } else if (s->blk) {
384 s->lcyl = 0;
385 s->hcyl = 0;
386 } else {
387 s->lcyl = 0xff;
388 s->hcyl = 0xff;
389 }
390 }
391
392 static bool ide_sect_range_ok(IDEState *s,
393 uint64_t sector, uint64_t nb_sectors)
394 {
395 uint64_t total_sectors;
396
397 blk_get_geometry(s->blk, &total_sectors);
398 if (sector > total_sectors || nb_sectors > total_sectors - sector) {
399 return false;
400 }
401 return true;
402 }
403
404 typedef struct TrimAIOCB {
405 BlockAIOCB common;
406 IDEState *s;
407 QEMUBH *bh;
408 int ret;
409 QEMUIOVector *qiov;
410 BlockAIOCB *aiocb;
411 int i, j;
412 } TrimAIOCB;
413
414 static void trim_aio_cancel(BlockAIOCB *acb)
415 {
416 TrimAIOCB *iocb = container_of(acb, TrimAIOCB, common);
417
418 /* Exit the loop so ide_issue_trim_cb will not continue */
419 iocb->j = iocb->qiov->niov - 1;
420 iocb->i = (iocb->qiov->iov[iocb->j].iov_len / 8) - 1;
421
422 iocb->ret = -ECANCELED;
423
424 if (iocb->aiocb) {
425 blk_aio_cancel_async(iocb->aiocb);
426 iocb->aiocb = NULL;
427 }
428 }
429
430 static const AIOCBInfo trim_aiocb_info = {
431 .aiocb_size = sizeof(TrimAIOCB),
432 .cancel_async = trim_aio_cancel,
433 };
434
435 static void ide_trim_bh_cb(void *opaque)
436 {
437 TrimAIOCB *iocb = opaque;
438 BlockBackend *blk = iocb->s->blk;
439
440 iocb->common.cb(iocb->common.opaque, iocb->ret);
441
442 qemu_bh_delete(iocb->bh);
443 iocb->bh = NULL;
444 qemu_aio_unref(iocb);
445
446 /* Paired with an increment in ide_issue_trim() */
447 blk_dec_in_flight(blk);
448 }
449
450 static void ide_issue_trim_cb(void *opaque, int ret)
451 {
452 TrimAIOCB *iocb = opaque;
453 IDEState *s = iocb->s;
454
455 if (iocb->i >= 0) {
456 if (ret >= 0) {
457 block_acct_done(blk_get_stats(s->blk), &s->acct);
458 } else {
459 block_acct_failed(blk_get_stats(s->blk), &s->acct);
460 }
461 }
462
463 if (ret >= 0) {
464 while (iocb->j < iocb->qiov->niov) {
465 int j = iocb->j;
466 while (++iocb->i < iocb->qiov->iov[j].iov_len / 8) {
467 int i = iocb->i;
468 uint64_t *buffer = iocb->qiov->iov[j].iov_base;
469
470 /* 6-byte LBA + 2-byte range per entry */
471 uint64_t entry = le64_to_cpu(buffer[i]);
472 uint64_t sector = entry & 0x0000ffffffffffffULL;
473 uint16_t count = entry >> 48;
474
475 if (count == 0) {
476 continue;
477 }
478
479 if (!ide_sect_range_ok(s, sector, count)) {
480 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_UNMAP);
481 iocb->ret = -EINVAL;
482 goto done;
483 }
484
485 block_acct_start(blk_get_stats(s->blk), &s->acct,
486 count << BDRV_SECTOR_BITS, BLOCK_ACCT_UNMAP);
487
488 /* Got an entry! Submit and exit. */
489 iocb->aiocb = blk_aio_pdiscard(s->blk,
490 sector << BDRV_SECTOR_BITS,
491 count << BDRV_SECTOR_BITS,
492 ide_issue_trim_cb, opaque);
493 return;
494 }
495
496 iocb->j++;
497 iocb->i = -1;
498 }
499 } else {
500 iocb->ret = ret;
501 }
502
503 done:
504 iocb->aiocb = NULL;
505 if (iocb->bh) {
506 replay_bh_schedule_event(iocb->bh);
507 }
508 }
509
510 BlockAIOCB *ide_issue_trim(
511 int64_t offset, QEMUIOVector *qiov,
512 BlockCompletionFunc *cb, void *cb_opaque, void *opaque)
513 {
514 IDEState *s = opaque;
515 TrimAIOCB *iocb;
516
517 /* Paired with a decrement in ide_trim_bh_cb() */
518 blk_inc_in_flight(s->blk);
519
520 iocb = blk_aio_get(&trim_aiocb_info, s->blk, cb, cb_opaque);
521 iocb->s = s;
522 iocb->bh = qemu_bh_new(ide_trim_bh_cb, iocb);
523 iocb->ret = 0;
524 iocb->qiov = qiov;
525 iocb->i = -1;
526 iocb->j = 0;
527 ide_issue_trim_cb(iocb, 0);
528 return &iocb->common;
529 }
530
531 void ide_abort_command(IDEState *s)
532 {
533 ide_transfer_stop(s);
534 s->status = READY_STAT | ERR_STAT;
535 s->error = ABRT_ERR;
536 }
537
538 static void ide_set_retry(IDEState *s)
539 {
540 s->bus->retry_unit = s->unit;
541 s->bus->retry_sector_num = ide_get_sector(s);
542 s->bus->retry_nsector = s->nsector;
543 }
544
545 static void ide_clear_retry(IDEState *s)
546 {
547 s->bus->retry_unit = -1;
548 s->bus->retry_sector_num = 0;
549 s->bus->retry_nsector = 0;
550 }
551
552 /* prepare data transfer and tell what to do after */
553 bool ide_transfer_start_norecurse(IDEState *s, uint8_t *buf, int size,
554 EndTransferFunc *end_transfer_func)
555 {
556 s->data_ptr = buf;
557 s->data_end = buf + size;
558 ide_set_retry(s);
559 if (!(s->status & ERR_STAT)) {
560 s->status |= DRQ_STAT;
561 }
562 if (!s->bus->dma->ops->pio_transfer) {
563 s->end_transfer_func = end_transfer_func;
564 return false;
565 }
566 s->bus->dma->ops->pio_transfer(s->bus->dma);
567 return true;
568 }
569
570 void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
571 EndTransferFunc *end_transfer_func)
572 {
573 if (ide_transfer_start_norecurse(s, buf, size, end_transfer_func)) {
574 end_transfer_func(s);
575 }
576 }
577
578 static void ide_cmd_done(IDEState *s)
579 {
580 if (s->bus->dma->ops->cmd_done) {
581 s->bus->dma->ops->cmd_done(s->bus->dma);
582 }
583 }
584
585 static void ide_transfer_halt(IDEState *s)
586 {
587 s->end_transfer_func = ide_transfer_stop;
588 s->data_ptr = s->io_buffer;
589 s->data_end = s->io_buffer;
590 s->status &= ~DRQ_STAT;
591 }
592
593 void ide_transfer_stop(IDEState *s)
594 {
595 ide_transfer_halt(s);
596 ide_cmd_done(s);
597 }
598
599 int64_t ide_get_sector(IDEState *s)
600 {
601 int64_t sector_num;
602 if (s->select & (ATA_DEV_LBA)) {
603 if (s->lba48) {
604 sector_num = ((int64_t)s->hob_hcyl << 40) |
605 ((int64_t) s->hob_lcyl << 32) |
606 ((int64_t) s->hob_sector << 24) |
607 ((int64_t) s->hcyl << 16) |
608 ((int64_t) s->lcyl << 8) | s->sector;
609 } else {
610 /* LBA28 */
611 sector_num = ((s->select & (ATA_DEV_LBA_MSB)) << 24) |
612 (s->hcyl << 16) | (s->lcyl << 8) | s->sector;
613 }
614 } else {
615 /* CHS */
616 sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
617 (s->select & (ATA_DEV_HS)) * s->sectors + (s->sector - 1);
618 }
619
620 return sector_num;
621 }
622
623 void ide_set_sector(IDEState *s, int64_t sector_num)
624 {
625 unsigned int cyl, r;
626 if (s->select & (ATA_DEV_LBA)) {
627 if (s->lba48) {
628 s->sector = sector_num;
629 s->lcyl = sector_num >> 8;
630 s->hcyl = sector_num >> 16;
631 s->hob_sector = sector_num >> 24;
632 s->hob_lcyl = sector_num >> 32;
633 s->hob_hcyl = sector_num >> 40;
634 } else {
635 /* LBA28 */
636 s->select = (s->select & ~(ATA_DEV_LBA_MSB)) |
637 ((sector_num >> 24) & (ATA_DEV_LBA_MSB));
638 s->hcyl = (sector_num >> 16);
639 s->lcyl = (sector_num >> 8);
640 s->sector = (sector_num);
641 }
642 } else {
643 /* CHS */
644 cyl = sector_num / (s->heads * s->sectors);
645 r = sector_num % (s->heads * s->sectors);
646 s->hcyl = cyl >> 8;
647 s->lcyl = cyl;
648 s->select = (s->select & ~(ATA_DEV_HS)) |
649 ((r / s->sectors) & (ATA_DEV_HS));
650 s->sector = (r % s->sectors) + 1;
651 }
652 }
653
654 static void ide_rw_error(IDEState *s) {
655 ide_abort_command(s);
656 ide_set_irq(s->bus);
657 }
658
659 static void ide_buffered_readv_cb(void *opaque, int ret)
660 {
661 IDEBufferedRequest *req = opaque;
662 if (!req->orphaned) {
663 if (!ret) {
664 assert(req->qiov.size == req->original_qiov->size);
665 qemu_iovec_from_buf(req->original_qiov, 0,
666 req->qiov.local_iov.iov_base,
667 req->original_qiov->size);
668 }
669 req->original_cb(req->original_opaque, ret);
670 }
671 QLIST_REMOVE(req, list);
672 qemu_vfree(qemu_iovec_buf(&req->qiov));
673 g_free(req);
674 }
675
676 #define MAX_BUFFERED_REQS 16
677
678 BlockAIOCB *ide_buffered_readv(IDEState *s, int64_t sector_num,
679 QEMUIOVector *iov, int nb_sectors,
680 BlockCompletionFunc *cb, void *opaque)
681 {
682 BlockAIOCB *aioreq;
683 IDEBufferedRequest *req;
684 int c = 0;
685
686 QLIST_FOREACH(req, &s->buffered_requests, list) {
687 c++;
688 }
689 if (c > MAX_BUFFERED_REQS) {
690 return blk_abort_aio_request(s->blk, cb, opaque, -EIO);
691 }
692
693 req = g_new0(IDEBufferedRequest, 1);
694 req->original_qiov = iov;
695 req->original_cb = cb;
696 req->original_opaque = opaque;
697 qemu_iovec_init_buf(&req->qiov, blk_blockalign(s->blk, iov->size),
698 iov->size);
699
700 aioreq = blk_aio_preadv(s->blk, sector_num << BDRV_SECTOR_BITS,
701 &req->qiov, 0, ide_buffered_readv_cb, req);
702
703 QLIST_INSERT_HEAD(&s->buffered_requests, req, list);
704 return aioreq;
705 }
706
707 /**
708 * Cancel all pending DMA requests.
709 * Any buffered DMA requests are instantly canceled,
710 * but any pending unbuffered DMA requests must be waited on.
711 */
712 void ide_cancel_dma_sync(IDEState *s)
713 {
714 IDEBufferedRequest *req;
715
716 /* First invoke the callbacks of all buffered requests
717 * and flag those requests as orphaned. Ideally there
718 * are no unbuffered (Scatter Gather DMA Requests or
719 * write requests) pending and we can avoid to drain. */
720 QLIST_FOREACH(req, &s->buffered_requests, list) {
721 if (!req->orphaned) {
722 trace_ide_cancel_dma_sync_buffered(req->original_cb, req);
723 req->original_cb(req->original_opaque, -ECANCELED);
724 }
725 req->orphaned = true;
726 }
727
728 /*
729 * We can't cancel Scatter Gather DMA in the middle of the
730 * operation or a partial (not full) DMA transfer would reach
731 * the storage so we wait for completion instead (we behave
732 * like if the DMA was completed by the time the guest trying
733 * to cancel dma with bmdma_cmd_writeb with BM_CMD_START not
734 * set).
735 *
736 * In the future we'll be able to safely cancel the I/O if the
737 * whole DMA operation will be submitted to disk with a single
738 * aio operation with preadv/pwritev.
739 */
740 if (s->bus->dma->aiocb) {
741 trace_ide_cancel_dma_sync_remaining();
742 blk_drain(s->blk);
743 assert(s->bus->dma->aiocb == NULL);
744 }
745 }
746
747 static void ide_sector_read(IDEState *s);
748
749 static void ide_sector_read_cb(void *opaque, int ret)
750 {
751 IDEState *s = opaque;
752 int n;
753
754 s->pio_aiocb = NULL;
755 s->status &= ~BUSY_STAT;
756
757 if (ret != 0) {
758 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO |
759 IDE_RETRY_READ)) {
760 return;
761 }
762 }
763
764 block_acct_done(blk_get_stats(s->blk), &s->acct);
765
766 n = s->nsector;
767 if (n > s->req_nb_sectors) {
768 n = s->req_nb_sectors;
769 }
770
771 ide_set_sector(s, ide_get_sector(s) + n);
772 s->nsector -= n;
773 /* Allow the guest to read the io_buffer */
774 ide_transfer_start(s, s->io_buffer, n * BDRV_SECTOR_SIZE, ide_sector_read);
775 ide_set_irq(s->bus);
776 }
777
778 static void ide_sector_read(IDEState *s)
779 {
780 int64_t sector_num;
781 int n;
782
783 s->status = READY_STAT | SEEK_STAT;
784 s->error = 0; /* not needed by IDE spec, but needed by Windows */
785 sector_num = ide_get_sector(s);
786 n = s->nsector;
787
788 if (n == 0) {
789 ide_transfer_stop(s);
790 return;
791 }
792
793 s->status |= BUSY_STAT;
794
795 if (n > s->req_nb_sectors) {
796 n = s->req_nb_sectors;
797 }
798
799 trace_ide_sector_read(sector_num, n);
800
801 if (!ide_sect_range_ok(s, sector_num, n)) {
802 ide_rw_error(s);
803 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_READ);
804 return;
805 }
806
807 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
808
809 block_acct_start(blk_get_stats(s->blk), &s->acct,
810 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
811 s->pio_aiocb = ide_buffered_readv(s, sector_num, &s->qiov, n,
812 ide_sector_read_cb, s);
813 }
814
815 void dma_buf_commit(IDEState *s, uint32_t tx_bytes)
816 {
817 if (s->bus->dma->ops->commit_buf) {
818 s->bus->dma->ops->commit_buf(s->bus->dma, tx_bytes);
819 }
820 s->io_buffer_offset += tx_bytes;
821 qemu_sglist_destroy(&s->sg);
822 }
823
824 void ide_set_inactive(IDEState *s, bool more)
825 {
826 s->bus->dma->aiocb = NULL;
827 ide_clear_retry(s);
828 if (s->bus->dma->ops->set_inactive) {
829 s->bus->dma->ops->set_inactive(s->bus->dma, more);
830 }
831 ide_cmd_done(s);
832 }
833
834 void ide_dma_error(IDEState *s)
835 {
836 dma_buf_commit(s, 0);
837 ide_abort_command(s);
838 ide_set_inactive(s, false);
839 ide_set_irq(s->bus);
840 }
841
842 int ide_handle_rw_error(IDEState *s, int error, int op)
843 {
844 bool is_read = (op & IDE_RETRY_READ) != 0;
845 BlockErrorAction action = blk_get_error_action(s->blk, is_read, error);
846
847 if (action == BLOCK_ERROR_ACTION_STOP) {
848 assert(s->bus->retry_unit == s->unit);
849 s->bus->error_status = op;
850 } else if (action == BLOCK_ERROR_ACTION_REPORT) {
851 block_acct_failed(blk_get_stats(s->blk), &s->acct);
852 if (IS_IDE_RETRY_DMA(op)) {
853 ide_dma_error(s);
854 } else if (IS_IDE_RETRY_ATAPI(op)) {
855 ide_atapi_io_error(s, -error);
856 } else {
857 ide_rw_error(s);
858 }
859 }
860 blk_error_action(s->blk, action, is_read, error);
861 return action != BLOCK_ERROR_ACTION_IGNORE;
862 }
863
864 static void ide_dma_cb(void *opaque, int ret)
865 {
866 IDEState *s = opaque;
867 int n;
868 int64_t sector_num;
869 uint64_t offset;
870 bool stay_active = false;
871 int32_t prep_size = 0;
872
873 if (ret == -EINVAL) {
874 ide_dma_error(s);
875 return;
876 }
877
878 if (ret < 0) {
879 if (ide_handle_rw_error(s, -ret, ide_dma_cmd_to_retry(s->dma_cmd))) {
880 s->bus->dma->aiocb = NULL;
881 dma_buf_commit(s, 0);
882 return;
883 }
884 }
885
886 if (s->io_buffer_size > s->nsector * 512) {
887 /*
888 * The PRDs were longer than needed for this request.
889 * The Active bit must remain set after the request completes.
890 */
891 n = s->nsector;
892 stay_active = true;
893 } else {
894 n = s->io_buffer_size >> 9;
895 }
896
897 sector_num = ide_get_sector(s);
898 if (n > 0) {
899 assert(n * 512 == s->sg.size);
900 dma_buf_commit(s, s->sg.size);
901 sector_num += n;
902 ide_set_sector(s, sector_num);
903 s->nsector -= n;
904 }
905
906 /* end of transfer ? */
907 if (s->nsector == 0) {
908 s->status = READY_STAT | SEEK_STAT;
909 ide_set_irq(s->bus);
910 goto eot;
911 }
912
913 /* launch next transfer */
914 n = s->nsector;
915 s->io_buffer_index = 0;
916 s->io_buffer_size = n * 512;
917 prep_size = s->bus->dma->ops->prepare_buf(s->bus->dma, s->io_buffer_size);
918 /* prepare_buf() must succeed and respect the limit */
919 assert(prep_size >= 0 && prep_size <= n * 512);
920
921 /*
922 * Now prep_size stores the number of bytes in the sglist, and
923 * s->io_buffer_size stores the number of bytes described by the PRDs.
924 */
925
926 if (prep_size < n * 512) {
927 /*
928 * The PRDs are too short for this request. Error condition!
929 * Reset the Active bit and don't raise the interrupt.
930 */
931 s->status = READY_STAT | SEEK_STAT;
932 dma_buf_commit(s, 0);
933 goto eot;
934 }
935
936 trace_ide_dma_cb(s, sector_num, n, IDE_DMA_CMD_str(s->dma_cmd));
937
938 if ((s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) &&
939 !ide_sect_range_ok(s, sector_num, n)) {
940 ide_dma_error(s);
941 block_acct_invalid(blk_get_stats(s->blk), s->acct.type);
942 return;
943 }
944
945 offset = sector_num << BDRV_SECTOR_BITS;
946 switch (s->dma_cmd) {
947 case IDE_DMA_READ:
948 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset,
949 BDRV_SECTOR_SIZE, ide_dma_cb, s);
950 break;
951 case IDE_DMA_WRITE:
952 s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset,
953 BDRV_SECTOR_SIZE, ide_dma_cb, s);
954 break;
955 case IDE_DMA_TRIM:
956 s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk),
957 &s->sg, offset, BDRV_SECTOR_SIZE,
958 ide_issue_trim, s, ide_dma_cb, s,
959 DMA_DIRECTION_TO_DEVICE);
960 break;
961 default:
962 abort();
963 }
964 return;
965
966 eot:
967 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
968 block_acct_done(blk_get_stats(s->blk), &s->acct);
969 }
970 ide_set_inactive(s, stay_active);
971 }
972
973 static void ide_sector_start_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
974 {
975 s->status = READY_STAT | SEEK_STAT | DRQ_STAT;
976 s->io_buffer_size = 0;
977 s->dma_cmd = dma_cmd;
978
979 switch (dma_cmd) {
980 case IDE_DMA_READ:
981 block_acct_start(blk_get_stats(s->blk), &s->acct,
982 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
983 break;
984 case IDE_DMA_WRITE:
985 block_acct_start(blk_get_stats(s->blk), &s->acct,
986 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
987 break;
988 default:
989 break;
990 }
991
992 ide_start_dma(s, ide_dma_cb);
993 }
994
995 void ide_start_dma(IDEState *s, BlockCompletionFunc *cb)
996 {
997 s->io_buffer_index = 0;
998 ide_set_retry(s);
999 if (s->bus->dma->ops->start_dma) {
1000 s->bus->dma->ops->start_dma(s->bus->dma, s, cb);
1001 }
1002 }
1003
1004 static void ide_sector_write(IDEState *s);
1005
1006 static void ide_sector_write_timer_cb(void *opaque)
1007 {
1008 IDEState *s = opaque;
1009 ide_set_irq(s->bus);
1010 }
1011
1012 static void ide_sector_write_cb(void *opaque, int ret)
1013 {
1014 IDEState *s = opaque;
1015 int n;
1016
1017 s->pio_aiocb = NULL;
1018 s->status &= ~BUSY_STAT;
1019
1020 if (ret != 0) {
1021 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO)) {
1022 return;
1023 }
1024 }
1025
1026 block_acct_done(blk_get_stats(s->blk), &s->acct);
1027
1028 n = s->nsector;
1029 if (n > s->req_nb_sectors) {
1030 n = s->req_nb_sectors;
1031 }
1032 s->nsector -= n;
1033
1034 ide_set_sector(s, ide_get_sector(s) + n);
1035 if (s->nsector == 0) {
1036 /* no more sectors to write */
1037 ide_transfer_stop(s);
1038 } else {
1039 int n1 = s->nsector;
1040 if (n1 > s->req_nb_sectors) {
1041 n1 = s->req_nb_sectors;
1042 }
1043 ide_transfer_start(s, s->io_buffer, n1 * BDRV_SECTOR_SIZE,
1044 ide_sector_write);
1045 }
1046
1047 if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
1048 /* It seems there is a bug in the Windows 2000 installer HDD
1049 IDE driver which fills the disk with empty logs when the
1050 IDE write IRQ comes too early. This hack tries to correct
1051 that at the expense of slower write performances. Use this
1052 option _only_ to install Windows 2000. You must disable it
1053 for normal use. */
1054 timer_mod(s->sector_write_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1055 (NANOSECONDS_PER_SECOND / 1000));
1056 } else {
1057 ide_set_irq(s->bus);
1058 }
1059 }
1060
1061 static void ide_sector_write(IDEState *s)
1062 {
1063 int64_t sector_num;
1064 int n;
1065
1066 s->status = READY_STAT | SEEK_STAT | BUSY_STAT;
1067 sector_num = ide_get_sector(s);
1068
1069 n = s->nsector;
1070 if (n > s->req_nb_sectors) {
1071 n = s->req_nb_sectors;
1072 }
1073
1074 trace_ide_sector_write(sector_num, n);
1075
1076 if (!ide_sect_range_ok(s, sector_num, n)) {
1077 ide_rw_error(s);
1078 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_WRITE);
1079 return;
1080 }
1081
1082 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
1083
1084 block_acct_start(blk_get_stats(s->blk), &s->acct,
1085 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
1086 s->pio_aiocb = blk_aio_pwritev(s->blk, sector_num << BDRV_SECTOR_BITS,
1087 &s->qiov, 0, ide_sector_write_cb, s);
1088 }
1089
1090 static void ide_flush_cb(void *opaque, int ret)
1091 {
1092 IDEState *s = opaque;
1093
1094 s->pio_aiocb = NULL;
1095
1096 if (ret < 0) {
1097 /* XXX: What sector number to set here? */
1098 if (ide_handle_rw_error(s, -ret, IDE_RETRY_FLUSH)) {
1099 return;
1100 }
1101 }
1102
1103 if (s->blk) {
1104 block_acct_done(blk_get_stats(s->blk), &s->acct);
1105 }
1106 s->status = READY_STAT | SEEK_STAT;
1107 ide_cmd_done(s);
1108 ide_set_irq(s->bus);
1109 }
1110
1111 static void ide_flush_cache(IDEState *s)
1112 {
1113 if (s->blk == NULL) {
1114 ide_flush_cb(s, 0);
1115 return;
1116 }
1117
1118 s->status |= BUSY_STAT;
1119 ide_set_retry(s);
1120 block_acct_start(blk_get_stats(s->blk), &s->acct, 0, BLOCK_ACCT_FLUSH);
1121 s->pio_aiocb = blk_aio_flush(s->blk, ide_flush_cb, s);
1122 }
1123
1124 static void ide_cfata_metadata_inquiry(IDEState *s)
1125 {
1126 uint16_t *p;
1127 uint32_t spd;
1128
1129 p = (uint16_t *) s->io_buffer;
1130 memset(p, 0, 0x200);
1131 spd = ((s->mdata_size - 1) >> 9) + 1;
1132
1133 put_le16(p + 0, 0x0001); /* Data format revision */
1134 put_le16(p + 1, 0x0000); /* Media property: silicon */
1135 put_le16(p + 2, s->media_changed); /* Media status */
1136 put_le16(p + 3, s->mdata_size & 0xffff); /* Capacity in bytes (low) */
1137 put_le16(p + 4, s->mdata_size >> 16); /* Capacity in bytes (high) */
1138 put_le16(p + 5, spd & 0xffff); /* Sectors per device (low) */
1139 put_le16(p + 6, spd >> 16); /* Sectors per device (high) */
1140 }
1141
1142 static void ide_cfata_metadata_read(IDEState *s)
1143 {
1144 uint16_t *p;
1145
1146 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1147 s->status = ERR_STAT;
1148 s->error = ABRT_ERR;
1149 return;
1150 }
1151
1152 p = (uint16_t *) s->io_buffer;
1153 memset(p, 0, 0x200);
1154
1155 put_le16(p + 0, s->media_changed); /* Media status */
1156 memcpy(p + 1, s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1157 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1158 s->nsector << 9), 0x200 - 2));
1159 }
1160
1161 static void ide_cfata_metadata_write(IDEState *s)
1162 {
1163 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1164 s->status = ERR_STAT;
1165 s->error = ABRT_ERR;
1166 return;
1167 }
1168
1169 s->media_changed = 0;
1170
1171 memcpy(s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1172 s->io_buffer + 2,
1173 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1174 s->nsector << 9), 0x200 - 2));
1175 }
1176
1177 /* called when the inserted state of the media has changed */
1178 static void ide_cd_change_cb(void *opaque, bool load, Error **errp)
1179 {
1180 IDEState *s = opaque;
1181 uint64_t nb_sectors;
1182
1183 s->tray_open = !load;
1184 blk_get_geometry(s->blk, &nb_sectors);
1185 s->nb_sectors = nb_sectors;
1186
1187 /*
1188 * First indicate to the guest that a CD has been removed. That's
1189 * done on the next command the guest sends us.
1190 *
1191 * Then we set UNIT_ATTENTION, by which the guest will
1192 * detect a new CD in the drive. See ide_atapi_cmd() for details.
1193 */
1194 s->cdrom_changed = 1;
1195 s->events.new_media = true;
1196 s->events.eject_request = false;
1197 ide_set_irq(s->bus);
1198 }
1199
1200 static void ide_cd_eject_request_cb(void *opaque, bool force)
1201 {
1202 IDEState *s = opaque;
1203
1204 s->events.eject_request = true;
1205 if (force) {
1206 s->tray_locked = false;
1207 }
1208 ide_set_irq(s->bus);
1209 }
1210
1211 static void ide_cmd_lba48_transform(IDEState *s, int lba48)
1212 {
1213 s->lba48 = lba48;
1214
1215 /* handle the 'magic' 0 nsector count conversion here. to avoid
1216 * fiddling with the rest of the read logic, we just store the
1217 * full sector count in ->nsector and ignore ->hob_nsector from now
1218 */
1219 if (!s->lba48) {
1220 if (!s->nsector)
1221 s->nsector = 256;
1222 } else {
1223 if (!s->nsector && !s->hob_nsector)
1224 s->nsector = 65536;
1225 else {
1226 int lo = s->nsector;
1227 int hi = s->hob_nsector;
1228
1229 s->nsector = (hi << 8) | lo;
1230 }
1231 }
1232 }
1233
1234 static void ide_clear_hob(IDEBus *bus)
1235 {
1236 /* any write clears HOB high bit of device control register */
1237 bus->cmd &= ~(IDE_CTRL_HOB);
1238 }
1239
1240 /* IOport [W]rite [R]egisters */
1241 enum ATA_IOPORT_WR {
1242 ATA_IOPORT_WR_DATA = 0,
1243 ATA_IOPORT_WR_FEATURES = 1,
1244 ATA_IOPORT_WR_SECTOR_COUNT = 2,
1245 ATA_IOPORT_WR_SECTOR_NUMBER = 3,
1246 ATA_IOPORT_WR_CYLINDER_LOW = 4,
1247 ATA_IOPORT_WR_CYLINDER_HIGH = 5,
1248 ATA_IOPORT_WR_DEVICE_HEAD = 6,
1249 ATA_IOPORT_WR_COMMAND = 7,
1250 ATA_IOPORT_WR_NUM_REGISTERS,
1251 };
1252
1253 const char *ATA_IOPORT_WR_lookup[ATA_IOPORT_WR_NUM_REGISTERS] = {
1254 [ATA_IOPORT_WR_DATA] = "Data",
1255 [ATA_IOPORT_WR_FEATURES] = "Features",
1256 [ATA_IOPORT_WR_SECTOR_COUNT] = "Sector Count",
1257 [ATA_IOPORT_WR_SECTOR_NUMBER] = "Sector Number",
1258 [ATA_IOPORT_WR_CYLINDER_LOW] = "Cylinder Low",
1259 [ATA_IOPORT_WR_CYLINDER_HIGH] = "Cylinder High",
1260 [ATA_IOPORT_WR_DEVICE_HEAD] = "Device/Head",
1261 [ATA_IOPORT_WR_COMMAND] = "Command"
1262 };
1263
1264 void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
1265 {
1266 IDEBus *bus = opaque;
1267 IDEState *s = idebus_active_if(bus);
1268 int reg_num = addr & 7;
1269
1270 trace_ide_ioport_write(addr, ATA_IOPORT_WR_lookup[reg_num], val, bus, s);
1271
1272 /* ignore writes to command block while busy with previous command */
1273 if (reg_num != 7 && (s->status & (BUSY_STAT|DRQ_STAT))) {
1274 return;
1275 }
1276
1277 /* NOTE: Device0 and Device1 both receive incoming register writes.
1278 * (They're on the same bus! They have to!) */
1279
1280 switch (reg_num) {
1281 case 0:
1282 break;
1283 case ATA_IOPORT_WR_FEATURES:
1284 ide_clear_hob(bus);
1285 bus->ifs[0].hob_feature = bus->ifs[0].feature;
1286 bus->ifs[1].hob_feature = bus->ifs[1].feature;
1287 bus->ifs[0].feature = val;
1288 bus->ifs[1].feature = val;
1289 break;
1290 case ATA_IOPORT_WR_SECTOR_COUNT:
1291 ide_clear_hob(bus);
1292 bus->ifs[0].hob_nsector = bus->ifs[0].nsector;
1293 bus->ifs[1].hob_nsector = bus->ifs[1].nsector;
1294 bus->ifs[0].nsector = val;
1295 bus->ifs[1].nsector = val;
1296 break;
1297 case ATA_IOPORT_WR_SECTOR_NUMBER:
1298 ide_clear_hob(bus);
1299 bus->ifs[0].hob_sector = bus->ifs[0].sector;
1300 bus->ifs[1].hob_sector = bus->ifs[1].sector;
1301 bus->ifs[0].sector = val;
1302 bus->ifs[1].sector = val;
1303 break;
1304 case ATA_IOPORT_WR_CYLINDER_LOW:
1305 ide_clear_hob(bus);
1306 bus->ifs[0].hob_lcyl = bus->ifs[0].lcyl;
1307 bus->ifs[1].hob_lcyl = bus->ifs[1].lcyl;
1308 bus->ifs[0].lcyl = val;
1309 bus->ifs[1].lcyl = val;
1310 break;
1311 case ATA_IOPORT_WR_CYLINDER_HIGH:
1312 ide_clear_hob(bus);
1313 bus->ifs[0].hob_hcyl = bus->ifs[0].hcyl;
1314 bus->ifs[1].hob_hcyl = bus->ifs[1].hcyl;
1315 bus->ifs[0].hcyl = val;
1316 bus->ifs[1].hcyl = val;
1317 break;
1318 case ATA_IOPORT_WR_DEVICE_HEAD:
1319 ide_clear_hob(bus);
1320 bus->ifs[0].select = val | (ATA_DEV_ALWAYS_ON);
1321 bus->ifs[1].select = val | (ATA_DEV_ALWAYS_ON);
1322 /* select drive */
1323 bus->unit = (val & (ATA_DEV_SELECT)) ? 1 : 0;
1324 break;
1325 default:
1326 case ATA_IOPORT_WR_COMMAND:
1327 ide_clear_hob(bus);
1328 qemu_irq_lower(bus->irq);
1329 ide_exec_cmd(bus, val);
1330 break;
1331 }
1332 }
1333
1334 static void ide_reset(IDEState *s)
1335 {
1336 trace_ide_reset(s);
1337
1338 if (s->pio_aiocb) {
1339 blk_aio_cancel(s->pio_aiocb);
1340 s->pio_aiocb = NULL;
1341 }
1342
1343 if (s->drive_kind == IDE_CFATA)
1344 s->mult_sectors = 0;
1345 else
1346 s->mult_sectors = MAX_MULT_SECTORS;
1347 /* ide regs */
1348 s->feature = 0;
1349 s->error = 0;
1350 s->nsector = 0;
1351 s->sector = 0;
1352 s->lcyl = 0;
1353 s->hcyl = 0;
1354
1355 /* lba48 */
1356 s->hob_feature = 0;
1357 s->hob_sector = 0;
1358 s->hob_nsector = 0;
1359 s->hob_lcyl = 0;
1360 s->hob_hcyl = 0;
1361
1362 s->select = (ATA_DEV_ALWAYS_ON);
1363 s->status = READY_STAT | SEEK_STAT;
1364
1365 s->lba48 = 0;
1366
1367 /* ATAPI specific */
1368 s->sense_key = 0;
1369 s->asc = 0;
1370 s->cdrom_changed = 0;
1371 s->packet_transfer_size = 0;
1372 s->elementary_transfer_size = 0;
1373 s->io_buffer_index = 0;
1374 s->cd_sector_size = 0;
1375 s->atapi_dma = 0;
1376 s->tray_locked = 0;
1377 s->tray_open = 0;
1378 /* ATA DMA state */
1379 s->io_buffer_size = 0;
1380 s->req_nb_sectors = 0;
1381
1382 ide_set_signature(s);
1383 /* init the transfer handler so that 0xffff is returned on data
1384 accesses */
1385 s->end_transfer_func = ide_dummy_transfer_stop;
1386 ide_dummy_transfer_stop(s);
1387 s->media_changed = 0;
1388 }
1389
1390 static bool cmd_nop(IDEState *s, uint8_t cmd)
1391 {
1392 return true;
1393 }
1394
1395 static bool cmd_device_reset(IDEState *s, uint8_t cmd)
1396 {
1397 /* Halt PIO (in the DRQ phase), then DMA */
1398 ide_transfer_halt(s);
1399 ide_cancel_dma_sync(s);
1400
1401 /* Reset any PIO commands, reset signature, etc */
1402 ide_reset(s);
1403
1404 /* RESET: ATA8-ACS3 7.10.4 "Normal Outputs";
1405 * ATA8-ACS3 Table 184 "Device Signatures for Normal Output" */
1406 s->status = 0x00;
1407
1408 /* Do not overwrite status register */
1409 return false;
1410 }
1411
1412 static bool cmd_data_set_management(IDEState *s, uint8_t cmd)
1413 {
1414 switch (s->feature) {
1415 case DSM_TRIM:
1416 if (s->blk) {
1417 ide_sector_start_dma(s, IDE_DMA_TRIM);
1418 return false;
1419 }
1420 break;
1421 }
1422
1423 ide_abort_command(s);
1424 return true;
1425 }
1426
1427 static bool cmd_identify(IDEState *s, uint8_t cmd)
1428 {
1429 if (s->blk && s->drive_kind != IDE_CD) {
1430 if (s->drive_kind != IDE_CFATA) {
1431 ide_identify(s);
1432 } else {
1433 ide_cfata_identify(s);
1434 }
1435 s->status = READY_STAT | SEEK_STAT;
1436 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1437 ide_set_irq(s->bus);
1438 return false;
1439 } else {
1440 if (s->drive_kind == IDE_CD) {
1441 ide_set_signature(s);
1442 }
1443 ide_abort_command(s);
1444 }
1445
1446 return true;
1447 }
1448
1449 static bool cmd_verify(IDEState *s, uint8_t cmd)
1450 {
1451 bool lba48 = (cmd == WIN_VERIFY_EXT);
1452
1453 /* do sector number check ? */
1454 ide_cmd_lba48_transform(s, lba48);
1455
1456 return true;
1457 }
1458
1459 static bool cmd_set_multiple_mode(IDEState *s, uint8_t cmd)
1460 {
1461 if (s->drive_kind == IDE_CFATA && s->nsector == 0) {
1462 /* Disable Read and Write Multiple */
1463 s->mult_sectors = 0;
1464 } else if ((s->nsector & 0xff) != 0 &&
1465 ((s->nsector & 0xff) > MAX_MULT_SECTORS ||
1466 (s->nsector & (s->nsector - 1)) != 0)) {
1467 ide_abort_command(s);
1468 } else {
1469 s->mult_sectors = s->nsector & 0xff;
1470 }
1471
1472 return true;
1473 }
1474
1475 static bool cmd_read_multiple(IDEState *s, uint8_t cmd)
1476 {
1477 bool lba48 = (cmd == WIN_MULTREAD_EXT);
1478
1479 if (!s->blk || !s->mult_sectors) {
1480 ide_abort_command(s);
1481 return true;
1482 }
1483
1484 ide_cmd_lba48_transform(s, lba48);
1485 s->req_nb_sectors = s->mult_sectors;
1486 ide_sector_read(s);
1487 return false;
1488 }
1489
1490 static bool cmd_write_multiple(IDEState *s, uint8_t cmd)
1491 {
1492 bool lba48 = (cmd == WIN_MULTWRITE_EXT);
1493 int n;
1494
1495 if (!s->blk || !s->mult_sectors) {
1496 ide_abort_command(s);
1497 return true;
1498 }
1499
1500 ide_cmd_lba48_transform(s, lba48);
1501
1502 s->req_nb_sectors = s->mult_sectors;
1503 n = MIN(s->nsector, s->req_nb_sectors);
1504
1505 s->status = SEEK_STAT | READY_STAT;
1506 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
1507
1508 s->media_changed = 1;
1509
1510 return false;
1511 }
1512
1513 static bool cmd_read_pio(IDEState *s, uint8_t cmd)
1514 {
1515 bool lba48 = (cmd == WIN_READ_EXT);
1516
1517 if (s->drive_kind == IDE_CD) {
1518 ide_set_signature(s); /* odd, but ATA4 8.27.5.2 requires it */
1519 ide_abort_command(s);
1520 return true;
1521 }
1522
1523 if (!s->blk) {
1524 ide_abort_command(s);
1525 return true;
1526 }
1527
1528 ide_cmd_lba48_transform(s, lba48);
1529 s->req_nb_sectors = 1;
1530 ide_sector_read(s);
1531
1532 return false;
1533 }
1534
1535 static bool cmd_write_pio(IDEState *s, uint8_t cmd)
1536 {
1537 bool lba48 = (cmd == WIN_WRITE_EXT);
1538
1539 if (!s->blk) {
1540 ide_abort_command(s);
1541 return true;
1542 }
1543
1544 ide_cmd_lba48_transform(s, lba48);
1545
1546 s->req_nb_sectors = 1;
1547 s->status = SEEK_STAT | READY_STAT;
1548 ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
1549
1550 s->media_changed = 1;
1551
1552 return false;
1553 }
1554
1555 static bool cmd_read_dma(IDEState *s, uint8_t cmd)
1556 {
1557 bool lba48 = (cmd == WIN_READDMA_EXT);
1558
1559 if (!s->blk) {
1560 ide_abort_command(s);
1561 return true;
1562 }
1563
1564 ide_cmd_lba48_transform(s, lba48);
1565 ide_sector_start_dma(s, IDE_DMA_READ);
1566
1567 return false;
1568 }
1569
1570 static bool cmd_write_dma(IDEState *s, uint8_t cmd)
1571 {
1572 bool lba48 = (cmd == WIN_WRITEDMA_EXT);
1573
1574 if (!s->blk) {
1575 ide_abort_command(s);
1576 return true;
1577 }
1578
1579 ide_cmd_lba48_transform(s, lba48);
1580 ide_sector_start_dma(s, IDE_DMA_WRITE);
1581
1582 s->media_changed = 1;
1583
1584 return false;
1585 }
1586
1587 static bool cmd_flush_cache(IDEState *s, uint8_t cmd)
1588 {
1589 ide_flush_cache(s);
1590 return false;
1591 }
1592
1593 static bool cmd_seek(IDEState *s, uint8_t cmd)
1594 {
1595 /* XXX: Check that seek is within bounds */
1596 return true;
1597 }
1598
1599 static bool cmd_read_native_max(IDEState *s, uint8_t cmd)
1600 {
1601 bool lba48 = (cmd == WIN_READ_NATIVE_MAX_EXT);
1602
1603 /* Refuse if no sectors are addressable (e.g. medium not inserted) */
1604 if (s->nb_sectors == 0) {
1605 ide_abort_command(s);
1606 return true;
1607 }
1608
1609 ide_cmd_lba48_transform(s, lba48);
1610 ide_set_sector(s, s->nb_sectors - 1);
1611
1612 return true;
1613 }
1614
1615 static bool cmd_check_power_mode(IDEState *s, uint8_t cmd)
1616 {
1617 s->nsector = 0xff; /* device active or idle */
1618 return true;
1619 }
1620
1621 static bool cmd_set_features(IDEState *s, uint8_t cmd)
1622 {
1623 uint16_t *identify_data;
1624
1625 if (!s->blk) {
1626 ide_abort_command(s);
1627 return true;
1628 }
1629
1630 /* XXX: valid for CDROM ? */
1631 switch (s->feature) {
1632 case 0x02: /* write cache enable */
1633 blk_set_enable_write_cache(s->blk, true);
1634 identify_data = (uint16_t *)s->identify_data;
1635 put_le16(identify_data + 85, (1 << 14) | (1 << 5) | 1);
1636 return true;
1637 case 0x82: /* write cache disable */
1638 blk_set_enable_write_cache(s->blk, false);
1639 identify_data = (uint16_t *)s->identify_data;
1640 put_le16(identify_data + 85, (1 << 14) | 1);
1641 ide_flush_cache(s);
1642 return false;
1643 case 0xcc: /* reverting to power-on defaults enable */
1644 case 0x66: /* reverting to power-on defaults disable */
1645 case 0xaa: /* read look-ahead enable */
1646 case 0x55: /* read look-ahead disable */
1647 case 0x05: /* set advanced power management mode */
1648 case 0x85: /* disable advanced power management mode */
1649 case 0x69: /* NOP */
1650 case 0x67: /* NOP */
1651 case 0x96: /* NOP */
1652 case 0x9a: /* NOP */
1653 case 0x42: /* enable Automatic Acoustic Mode */
1654 case 0xc2: /* disable Automatic Acoustic Mode */
1655 return true;
1656 case 0x03: /* set transfer mode */
1657 {
1658 uint8_t val = s->nsector & 0x07;
1659 identify_data = (uint16_t *)s->identify_data;
1660
1661 switch (s->nsector >> 3) {
1662 case 0x00: /* pio default */
1663 case 0x01: /* pio mode */
1664 put_le16(identify_data + 62, 0x07);
1665 put_le16(identify_data + 63, 0x07);
1666 put_le16(identify_data + 88, 0x3f);
1667 break;
1668 case 0x02: /* sigle word dma mode*/
1669 put_le16(identify_data + 62, 0x07 | (1 << (val + 8)));
1670 put_le16(identify_data + 63, 0x07);
1671 put_le16(identify_data + 88, 0x3f);
1672 break;
1673 case 0x04: /* mdma mode */
1674 put_le16(identify_data + 62, 0x07);
1675 put_le16(identify_data + 63, 0x07 | (1 << (val + 8)));
1676 put_le16(identify_data + 88, 0x3f);
1677 break;
1678 case 0x08: /* udma mode */
1679 put_le16(identify_data + 62, 0x07);
1680 put_le16(identify_data + 63, 0x07);
1681 put_le16(identify_data + 88, 0x3f | (1 << (val + 8)));
1682 break;
1683 default:
1684 goto abort_cmd;
1685 }
1686 return true;
1687 }
1688 }
1689
1690 abort_cmd:
1691 ide_abort_command(s);
1692 return true;
1693 }
1694
1695
1696 /*** ATAPI commands ***/
1697
1698 static bool cmd_identify_packet(IDEState *s, uint8_t cmd)
1699 {
1700 ide_atapi_identify(s);
1701 s->status = READY_STAT | SEEK_STAT;
1702 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1703 ide_set_irq(s->bus);
1704 return false;
1705 }
1706
1707 static bool cmd_exec_dev_diagnostic(IDEState *s, uint8_t cmd)
1708 {
1709 ide_set_signature(s);
1710
1711 if (s->drive_kind == IDE_CD) {
1712 s->status = 0; /* ATAPI spec (v6) section 9.10 defines packet
1713 * devices to return a clear status register
1714 * with READY_STAT *not* set. */
1715 s->error = 0x01;
1716 } else {
1717 s->status = READY_STAT | SEEK_STAT;
1718 /* The bits of the error register are not as usual for this command!
1719 * They are part of the regular output (this is why ERR_STAT isn't set)
1720 * Device 0 passed, Device 1 passed or not present. */
1721 s->error = 0x01;
1722 ide_set_irq(s->bus);
1723 }
1724
1725 return false;
1726 }
1727
1728 static bool cmd_packet(IDEState *s, uint8_t cmd)
1729 {
1730 /* overlapping commands not supported */
1731 if (s->feature & 0x02) {
1732 ide_abort_command(s);
1733 return true;
1734 }
1735
1736 s->status = READY_STAT | SEEK_STAT;
1737 s->atapi_dma = s->feature & 1;
1738 if (s->atapi_dma) {
1739 s->dma_cmd = IDE_DMA_ATAPI;
1740 }
1741 s->nsector = 1;
1742 ide_transfer_start(s, s->io_buffer, ATAPI_PACKET_SIZE,
1743 ide_atapi_cmd);
1744 return false;
1745 }
1746
1747
1748 /*** CF-ATA commands ***/
1749
1750 static bool cmd_cfa_req_ext_error_code(IDEState *s, uint8_t cmd)
1751 {
1752 s->error = 0x09; /* miscellaneous error */
1753 s->status = READY_STAT | SEEK_STAT;
1754 ide_set_irq(s->bus);
1755
1756 return false;
1757 }
1758
1759 static bool cmd_cfa_erase_sectors(IDEState *s, uint8_t cmd)
1760 {
1761 /* WIN_SECURITY_FREEZE_LOCK has the same ID as CFA_WEAR_LEVEL and is
1762 * required for Windows 8 to work with AHCI */
1763
1764 if (cmd == CFA_WEAR_LEVEL) {
1765 s->nsector = 0;
1766 }
1767
1768 if (cmd == CFA_ERASE_SECTORS) {
1769 s->media_changed = 1;
1770 }
1771
1772 return true;
1773 }
1774
1775 static bool cmd_cfa_translate_sector(IDEState *s, uint8_t cmd)
1776 {
1777 s->status = READY_STAT | SEEK_STAT;
1778
1779 memset(s->io_buffer, 0, 0x200);
1780 s->io_buffer[0x00] = s->hcyl; /* Cyl MSB */
1781 s->io_buffer[0x01] = s->lcyl; /* Cyl LSB */
1782 s->io_buffer[0x02] = s->select; /* Head */
1783 s->io_buffer[0x03] = s->sector; /* Sector */
1784 s->io_buffer[0x04] = ide_get_sector(s) >> 16; /* LBA MSB */
1785 s->io_buffer[0x05] = ide_get_sector(s) >> 8; /* LBA */
1786 s->io_buffer[0x06] = ide_get_sector(s) >> 0; /* LBA LSB */
1787 s->io_buffer[0x13] = 0x00; /* Erase flag */
1788 s->io_buffer[0x18] = 0x00; /* Hot count */
1789 s->io_buffer[0x19] = 0x00; /* Hot count */
1790 s->io_buffer[0x1a] = 0x01; /* Hot count */
1791
1792 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1793 ide_set_irq(s->bus);
1794
1795 return false;
1796 }
1797
1798 static bool cmd_cfa_access_metadata_storage(IDEState *s, uint8_t cmd)
1799 {
1800 switch (s->feature) {
1801 case 0x02: /* Inquiry Metadata Storage */
1802 ide_cfata_metadata_inquiry(s);
1803 break;
1804 case 0x03: /* Read Metadata Storage */
1805 ide_cfata_metadata_read(s);
1806 break;
1807 case 0x04: /* Write Metadata Storage */
1808 ide_cfata_metadata_write(s);
1809 break;
1810 default:
1811 ide_abort_command(s);
1812 return true;
1813 }
1814
1815 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1816 s->status = 0x00; /* NOTE: READY is _not_ set */
1817 ide_set_irq(s->bus);
1818
1819 return false;
1820 }
1821
1822 static bool cmd_ibm_sense_condition(IDEState *s, uint8_t cmd)
1823 {
1824 switch (s->feature) {
1825 case 0x01: /* sense temperature in device */
1826 s->nsector = 0x50; /* +20 C */
1827 break;
1828 default:
1829 ide_abort_command(s);
1830 return true;
1831 }
1832
1833 return true;
1834 }
1835
1836
1837 /*** SMART commands ***/
1838
1839 static bool cmd_smart(IDEState *s, uint8_t cmd)
1840 {
1841 int n;
1842
1843 if (s->hcyl != 0xc2 || s->lcyl != 0x4f) {
1844 goto abort_cmd;
1845 }
1846
1847 if (!s->smart_enabled && s->feature != SMART_ENABLE) {
1848 goto abort_cmd;
1849 }
1850
1851 switch (s->feature) {
1852 case SMART_DISABLE:
1853 s->smart_enabled = 0;
1854 return true;
1855
1856 case SMART_ENABLE:
1857 s->smart_enabled = 1;
1858 return true;
1859
1860 case SMART_ATTR_AUTOSAVE:
1861 switch (s->sector) {
1862 case 0x00:
1863 s->smart_autosave = 0;
1864 break;
1865 case 0xf1:
1866 s->smart_autosave = 1;
1867 break;
1868 default:
1869 goto abort_cmd;
1870 }
1871 return true;
1872
1873 case SMART_STATUS:
1874 if (!s->smart_errors) {
1875 s->hcyl = 0xc2;
1876 s->lcyl = 0x4f;
1877 } else {
1878 s->hcyl = 0x2c;
1879 s->lcyl = 0xf4;
1880 }
1881 return true;
1882
1883 case SMART_READ_THRESH:
1884 memset(s->io_buffer, 0, 0x200);
1885 s->io_buffer[0] = 0x01; /* smart struct version */
1886
1887 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1888 s->io_buffer[2 + 0 + (n * 12)] = smart_attributes[n][0];
1889 s->io_buffer[2 + 1 + (n * 12)] = smart_attributes[n][11];
1890 }
1891
1892 /* checksum */
1893 for (n = 0; n < 511; n++) {
1894 s->io_buffer[511] += s->io_buffer[n];
1895 }
1896 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1897
1898 s->status = READY_STAT | SEEK_STAT;
1899 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1900 ide_set_irq(s->bus);
1901 return false;
1902
1903 case SMART_READ_DATA:
1904 memset(s->io_buffer, 0, 0x200);
1905 s->io_buffer[0] = 0x01; /* smart struct version */
1906
1907 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1908 int i;
1909 for (i = 0; i < 11; i++) {
1910 s->io_buffer[2 + i + (n * 12)] = smart_attributes[n][i];
1911 }
1912 }
1913
1914 s->io_buffer[362] = 0x02 | (s->smart_autosave ? 0x80 : 0x00);
1915 if (s->smart_selftest_count == 0) {
1916 s->io_buffer[363] = 0;
1917 } else {
1918 s->io_buffer[363] =
1919 s->smart_selftest_data[3 +
1920 (s->smart_selftest_count - 1) *
1921 24];
1922 }
1923 s->io_buffer[364] = 0x20;
1924 s->io_buffer[365] = 0x01;
1925 /* offline data collection capacity: execute + self-test*/
1926 s->io_buffer[367] = (1 << 4 | 1 << 3 | 1);
1927 s->io_buffer[368] = 0x03; /* smart capability (1) */
1928 s->io_buffer[369] = 0x00; /* smart capability (2) */
1929 s->io_buffer[370] = 0x01; /* error logging supported */
1930 s->io_buffer[372] = 0x02; /* minutes for poll short test */
1931 s->io_buffer[373] = 0x36; /* minutes for poll ext test */
1932 s->io_buffer[374] = 0x01; /* minutes for poll conveyance */
1933
1934 for (n = 0; n < 511; n++) {
1935 s->io_buffer[511] += s->io_buffer[n];
1936 }
1937 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1938
1939 s->status = READY_STAT | SEEK_STAT;
1940 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1941 ide_set_irq(s->bus);
1942 return false;
1943
1944 case SMART_READ_LOG:
1945 switch (s->sector) {
1946 case 0x01: /* summary smart error log */
1947 memset(s->io_buffer, 0, 0x200);
1948 s->io_buffer[0] = 0x01;
1949 s->io_buffer[1] = 0x00; /* no error entries */
1950 s->io_buffer[452] = s->smart_errors & 0xff;
1951 s->io_buffer[453] = (s->smart_errors & 0xff00) >> 8;
1952
1953 for (n = 0; n < 511; n++) {
1954 s->io_buffer[511] += s->io_buffer[n];
1955 }
1956 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1957 break;
1958 case 0x06: /* smart self test log */
1959 memset(s->io_buffer, 0, 0x200);
1960 s->io_buffer[0] = 0x01;
1961 if (s->smart_selftest_count == 0) {
1962 s->io_buffer[508] = 0;
1963 } else {
1964 s->io_buffer[508] = s->smart_selftest_count;
1965 for (n = 2; n < 506; n++) {
1966 s->io_buffer[n] = s->smart_selftest_data[n];
1967 }
1968 }
1969
1970 for (n = 0; n < 511; n++) {
1971 s->io_buffer[511] += s->io_buffer[n];
1972 }
1973 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1974 break;
1975 default:
1976 goto abort_cmd;
1977 }
1978 s->status = READY_STAT | SEEK_STAT;
1979 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1980 ide_set_irq(s->bus);
1981 return false;
1982
1983 case SMART_EXECUTE_OFFLINE:
1984 switch (s->sector) {
1985 case 0: /* off-line routine */
1986 case 1: /* short self test */
1987 case 2: /* extended self test */
1988 s->smart_selftest_count++;
1989 if (s->smart_selftest_count > 21) {
1990 s->smart_selftest_count = 1;
1991 }
1992 n = 2 + (s->smart_selftest_count - 1) * 24;
1993 s->smart_selftest_data[n] = s->sector;
1994 s->smart_selftest_data[n + 1] = 0x00; /* OK and finished */
1995 s->smart_selftest_data[n + 2] = 0x34; /* hour count lsb */
1996 s->smart_selftest_data[n + 3] = 0x12; /* hour count msb */
1997 break;
1998 default:
1999 goto abort_cmd;
2000 }
2001 return true;
2002 }
2003
2004 abort_cmd:
2005 ide_abort_command(s);
2006 return true;
2007 }
2008
2009 #define HD_OK (1u << IDE_HD)
2010 #define CD_OK (1u << IDE_CD)
2011 #define CFA_OK (1u << IDE_CFATA)
2012 #define HD_CFA_OK (HD_OK | CFA_OK)
2013 #define ALL_OK (HD_OK | CD_OK | CFA_OK)
2014
2015 /* Set the Disk Seek Completed status bit during completion */
2016 #define SET_DSC (1u << 8)
2017
2018 /* See ACS-2 T13/2015-D Table B.2 Command codes */
2019 static const struct {
2020 /* Returns true if the completion code should be run */
2021 bool (*handler)(IDEState *s, uint8_t cmd);
2022 int flags;
2023 } ide_cmd_table[0x100] = {
2024 /* NOP not implemented, mandatory for CD */
2025 [CFA_REQ_EXT_ERROR_CODE] = { cmd_cfa_req_ext_error_code, CFA_OK },
2026 [WIN_DSM] = { cmd_data_set_management, HD_CFA_OK },
2027 [WIN_DEVICE_RESET] = { cmd_device_reset, CD_OK },
2028 [WIN_RECAL] = { cmd_nop, HD_CFA_OK | SET_DSC},
2029 [WIN_READ] = { cmd_read_pio, ALL_OK },
2030 [WIN_READ_ONCE] = { cmd_read_pio, HD_CFA_OK },
2031 [WIN_READ_EXT] = { cmd_read_pio, HD_CFA_OK },
2032 [WIN_READDMA_EXT] = { cmd_read_dma, HD_CFA_OK },
2033 [WIN_READ_NATIVE_MAX_EXT] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
2034 [WIN_MULTREAD_EXT] = { cmd_read_multiple, HD_CFA_OK },
2035 [WIN_WRITE] = { cmd_write_pio, HD_CFA_OK },
2036 [WIN_WRITE_ONCE] = { cmd_write_pio, HD_CFA_OK },
2037 [WIN_WRITE_EXT] = { cmd_write_pio, HD_CFA_OK },
2038 [WIN_WRITEDMA_EXT] = { cmd_write_dma, HD_CFA_OK },
2039 [CFA_WRITE_SECT_WO_ERASE] = { cmd_write_pio, CFA_OK },
2040 [WIN_MULTWRITE_EXT] = { cmd_write_multiple, HD_CFA_OK },
2041 [WIN_WRITE_VERIFY] = { cmd_write_pio, HD_CFA_OK },
2042 [WIN_VERIFY] = { cmd_verify, HD_CFA_OK | SET_DSC },
2043 [WIN_VERIFY_ONCE] = { cmd_verify, HD_CFA_OK | SET_DSC },
2044 [WIN_VERIFY_EXT] = { cmd_verify, HD_CFA_OK | SET_DSC },
2045 [WIN_SEEK] = { cmd_seek, HD_CFA_OK | SET_DSC },
2046 [CFA_TRANSLATE_SECTOR] = { cmd_cfa_translate_sector, CFA_OK },
2047 [WIN_DIAGNOSE] = { cmd_exec_dev_diagnostic, ALL_OK },
2048 [WIN_SPECIFY] = { cmd_nop, HD_CFA_OK | SET_DSC },
2049 [WIN_STANDBYNOW2] = { cmd_nop, HD_CFA_OK },
2050 [WIN_IDLEIMMEDIATE2] = { cmd_nop, HD_CFA_OK },
2051 [WIN_STANDBY2] = { cmd_nop, HD_CFA_OK },
2052 [WIN_SETIDLE2] = { cmd_nop, HD_CFA_OK },
2053 [WIN_CHECKPOWERMODE2] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2054 [WIN_SLEEPNOW2] = { cmd_nop, HD_CFA_OK },
2055 [WIN_PACKETCMD] = { cmd_packet, CD_OK },
2056 [WIN_PIDENTIFY] = { cmd_identify_packet, CD_OK },
2057 [WIN_SMART] = { cmd_smart, HD_CFA_OK | SET_DSC },
2058 [CFA_ACCESS_METADATA_STORAGE] = { cmd_cfa_access_metadata_storage, CFA_OK },
2059 [CFA_ERASE_SECTORS] = { cmd_cfa_erase_sectors, CFA_OK | SET_DSC },
2060 [WIN_MULTREAD] = { cmd_read_multiple, HD_CFA_OK },
2061 [WIN_MULTWRITE] = { cmd_write_multiple, HD_CFA_OK },
2062 [WIN_SETMULT] = { cmd_set_multiple_mode, HD_CFA_OK | SET_DSC },
2063 [WIN_READDMA] = { cmd_read_dma, HD_CFA_OK },
2064 [WIN_READDMA_ONCE] = { cmd_read_dma, HD_CFA_OK },
2065 [WIN_WRITEDMA] = { cmd_write_dma, HD_CFA_OK },
2066 [WIN_WRITEDMA_ONCE] = { cmd_write_dma, HD_CFA_OK },
2067 [CFA_WRITE_MULTI_WO_ERASE] = { cmd_write_multiple, CFA_OK },
2068 [WIN_STANDBYNOW1] = { cmd_nop, HD_CFA_OK },
2069 [WIN_IDLEIMMEDIATE] = { cmd_nop, HD_CFA_OK },
2070 [WIN_STANDBY] = { cmd_nop, HD_CFA_OK },
2071 [WIN_SETIDLE1] = { cmd_nop, HD_CFA_OK },
2072 [WIN_CHECKPOWERMODE1] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2073 [WIN_SLEEPNOW1] = { cmd_nop, HD_CFA_OK },
2074 [WIN_FLUSH_CACHE] = { cmd_flush_cache, ALL_OK },
2075 [WIN_FLUSH_CACHE_EXT] = { cmd_flush_cache, HD_CFA_OK },
2076 [WIN_IDENTIFY] = { cmd_identify, ALL_OK },
2077 [WIN_SETFEATURES] = { cmd_set_features, ALL_OK | SET_DSC },
2078 [IBM_SENSE_CONDITION] = { cmd_ibm_sense_condition, CFA_OK | SET_DSC },
2079 [CFA_WEAR_LEVEL] = { cmd_cfa_erase_sectors, HD_CFA_OK | SET_DSC },
2080 [WIN_READ_NATIVE_MAX] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
2081 };
2082
2083 static bool ide_cmd_permitted(IDEState *s, uint32_t cmd)
2084 {
2085 return cmd < ARRAY_SIZE(ide_cmd_table)
2086 && (ide_cmd_table[cmd].flags & (1u << s->drive_kind));
2087 }
2088
2089 void ide_exec_cmd(IDEBus *bus, uint32_t val)
2090 {
2091 IDEState *s;
2092 bool complete;
2093
2094 s = idebus_active_if(bus);
2095 trace_ide_exec_cmd(bus, s, val);
2096
2097 /* ignore commands to non existent slave */
2098 if (s != bus->ifs && !s->blk) {
2099 return;
2100 }
2101
2102 /* Only RESET is allowed while BSY and/or DRQ are set,
2103 * and only to ATAPI devices. */
2104 if (s->status & (BUSY_STAT|DRQ_STAT)) {
2105 if (val != WIN_DEVICE_RESET || s->drive_kind != IDE_CD) {
2106 return;
2107 }
2108 }
2109
2110 if (!ide_cmd_permitted(s, val)) {
2111 ide_abort_command(s);
2112 ide_set_irq(s->bus);
2113 return;
2114 }
2115
2116 s->status = READY_STAT | BUSY_STAT;
2117 s->error = 0;
2118 s->io_buffer_offset = 0;
2119
2120 complete = ide_cmd_table[val].handler(s, val);
2121 if (complete) {
2122 s->status &= ~BUSY_STAT;
2123 assert(!!s->error == !!(s->status & ERR_STAT));
2124
2125 if ((ide_cmd_table[val].flags & SET_DSC) && !s->error) {
2126 s->status |= SEEK_STAT;
2127 }
2128
2129 ide_cmd_done(s);
2130 ide_set_irq(s->bus);
2131 }
2132 }
2133
2134 /* IOport [R]ead [R]egisters */
2135 enum ATA_IOPORT_RR {
2136 ATA_IOPORT_RR_DATA = 0,
2137 ATA_IOPORT_RR_ERROR = 1,
2138 ATA_IOPORT_RR_SECTOR_COUNT = 2,
2139 ATA_IOPORT_RR_SECTOR_NUMBER = 3,
2140 ATA_IOPORT_RR_CYLINDER_LOW = 4,
2141 ATA_IOPORT_RR_CYLINDER_HIGH = 5,
2142 ATA_IOPORT_RR_DEVICE_HEAD = 6,
2143 ATA_IOPORT_RR_STATUS = 7,
2144 ATA_IOPORT_RR_NUM_REGISTERS,
2145 };
2146
2147 const char *ATA_IOPORT_RR_lookup[ATA_IOPORT_RR_NUM_REGISTERS] = {
2148 [ATA_IOPORT_RR_DATA] = "Data",
2149 [ATA_IOPORT_RR_ERROR] = "Error",
2150 [ATA_IOPORT_RR_SECTOR_COUNT] = "Sector Count",
2151 [ATA_IOPORT_RR_SECTOR_NUMBER] = "Sector Number",
2152 [ATA_IOPORT_RR_CYLINDER_LOW] = "Cylinder Low",
2153 [ATA_IOPORT_RR_CYLINDER_HIGH] = "Cylinder High",
2154 [ATA_IOPORT_RR_DEVICE_HEAD] = "Device/Head",
2155 [ATA_IOPORT_RR_STATUS] = "Status"
2156 };
2157
2158 uint32_t ide_ioport_read(void *opaque, uint32_t addr)
2159 {
2160 IDEBus *bus = opaque;
2161 IDEState *s = idebus_active_if(bus);
2162 uint32_t reg_num;
2163 int ret, hob;
2164
2165 reg_num = addr & 7;
2166 hob = bus->cmd & (IDE_CTRL_HOB);
2167 switch (reg_num) {
2168 case ATA_IOPORT_RR_DATA:
2169 /*
2170 * The pre-GRUB Solaris x86 bootloader relies upon inb
2171 * consuming a word from the drive's sector buffer.
2172 */
2173 ret = ide_data_readw(bus, addr) & 0xff;
2174 break;
2175 case ATA_IOPORT_RR_ERROR:
2176 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2177 (s != bus->ifs && !s->blk)) {
2178 ret = 0;
2179 } else if (!hob) {
2180 ret = s->error;
2181 } else {
2182 ret = s->hob_feature;
2183 }
2184 break;
2185 case ATA_IOPORT_RR_SECTOR_COUNT:
2186 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2187 ret = 0;
2188 } else if (!hob) {
2189 ret = s->nsector & 0xff;
2190 } else {
2191 ret = s->hob_nsector;
2192 }
2193 break;
2194 case ATA_IOPORT_RR_SECTOR_NUMBER:
2195 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2196 ret = 0;
2197 } else if (!hob) {
2198 ret = s->sector;
2199 } else {
2200 ret = s->hob_sector;
2201 }
2202 break;
2203 case ATA_IOPORT_RR_CYLINDER_LOW:
2204 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2205 ret = 0;
2206 } else if (!hob) {
2207 ret = s->lcyl;
2208 } else {
2209 ret = s->hob_lcyl;
2210 }
2211 break;
2212 case ATA_IOPORT_RR_CYLINDER_HIGH:
2213 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2214 ret = 0;
2215 } else if (!hob) {
2216 ret = s->hcyl;
2217 } else {
2218 ret = s->hob_hcyl;
2219 }
2220 break;
2221 case ATA_IOPORT_RR_DEVICE_HEAD:
2222 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2223 ret = 0;
2224 } else {
2225 ret = s->select;
2226 }
2227 break;
2228 default:
2229 case ATA_IOPORT_RR_STATUS:
2230 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2231 (s != bus->ifs && !s->blk)) {
2232 ret = 0;
2233 } else {
2234 ret = s->status;
2235 }
2236 qemu_irq_lower(bus->irq);
2237 break;
2238 }
2239
2240 trace_ide_ioport_read(addr, ATA_IOPORT_RR_lookup[reg_num], ret, bus, s);
2241 return ret;
2242 }
2243
2244 uint32_t ide_status_read(void *opaque, uint32_t addr)
2245 {
2246 IDEBus *bus = opaque;
2247 IDEState *s = idebus_active_if(bus);
2248 int ret;
2249
2250 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2251 (s != bus->ifs && !s->blk)) {
2252 ret = 0;
2253 } else {
2254 ret = s->status;
2255 }
2256
2257 trace_ide_status_read(addr, ret, bus, s);
2258 return ret;
2259 }
2260
2261 static void ide_perform_srst(IDEState *s)
2262 {
2263 s->status |= BUSY_STAT;
2264
2265 /* Halt PIO (Via register state); PIO BH remains scheduled. */
2266 ide_transfer_halt(s);
2267
2268 /* Cancel DMA -- may drain block device and invoke callbacks */
2269 ide_cancel_dma_sync(s);
2270
2271 /* Cancel PIO callback, reset registers/signature, etc */
2272 ide_reset(s);
2273
2274 /* perform diagnostic */
2275 cmd_exec_dev_diagnostic(s, WIN_DIAGNOSE);
2276 }
2277
2278 static void ide_bus_perform_srst(void *opaque)
2279 {
2280 IDEBus *bus = opaque;
2281 IDEState *s;
2282 int i;
2283
2284 for (i = 0; i < 2; i++) {
2285 s = &bus->ifs[i];
2286 ide_perform_srst(s);
2287 }
2288
2289 bus->cmd &= ~IDE_CTRL_RESET;
2290 }
2291
2292 void ide_ctrl_write(void *opaque, uint32_t addr, uint32_t val)
2293 {
2294 IDEBus *bus = opaque;
2295 IDEState *s;
2296 int i;
2297
2298 trace_ide_ctrl_write(addr, val, bus);
2299
2300 /* Device0 and Device1 each have their own control register,
2301 * but QEMU models it as just one register in the controller. */
2302 if (!(bus->cmd & IDE_CTRL_RESET) && (val & IDE_CTRL_RESET)) {
2303 for (i = 0; i < 2; i++) {
2304 s = &bus->ifs[i];
2305 s->status |= BUSY_STAT;
2306 }
2307 replay_bh_schedule_oneshot_event(qemu_get_aio_context(),
2308 ide_bus_perform_srst, bus);
2309 }
2310
2311 bus->cmd = val;
2312 }
2313
2314 /*
2315 * Returns true if the running PIO transfer is a PIO out (i.e. data is
2316 * transferred from the device to the guest), false if it's a PIO in
2317 */
2318 static bool ide_is_pio_out(IDEState *s)
2319 {
2320 if (s->end_transfer_func == ide_sector_write ||
2321 s->end_transfer_func == ide_atapi_cmd) {
2322 return false;
2323 } else if (s->end_transfer_func == ide_sector_read ||
2324 s->end_transfer_func == ide_transfer_stop ||
2325 s->end_transfer_func == ide_atapi_cmd_reply_end ||
2326 s->end_transfer_func == ide_dummy_transfer_stop) {
2327 return true;
2328 }
2329
2330 abort();
2331 }
2332
2333 void ide_data_writew(void *opaque, uint32_t addr, uint32_t val)
2334 {
2335 IDEBus *bus = opaque;
2336 IDEState *s = idebus_active_if(bus);
2337 uint8_t *p;
2338
2339 trace_ide_data_writew(addr, val, bus, s);
2340
2341 /* PIO data access allowed only when DRQ bit is set. The result of a write
2342 * during PIO out is indeterminate, just ignore it. */
2343 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2344 return;
2345 }
2346
2347 p = s->data_ptr;
2348 if (p + 2 > s->data_end) {
2349 return;
2350 }
2351
2352 *(uint16_t *)p = le16_to_cpu(val);
2353 p += 2;
2354 s->data_ptr = p;
2355 if (p >= s->data_end) {
2356 s->status &= ~DRQ_STAT;
2357 s->end_transfer_func(s);
2358 }
2359 }
2360
2361 uint32_t ide_data_readw(void *opaque, uint32_t addr)
2362 {
2363 IDEBus *bus = opaque;
2364 IDEState *s = idebus_active_if(bus);
2365 uint8_t *p;
2366 int ret;
2367
2368 /* PIO data access allowed only when DRQ bit is set. The result of a read
2369 * during PIO in is indeterminate, return 0 and don't move forward. */
2370 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2371 return 0;
2372 }
2373
2374 p = s->data_ptr;
2375 if (p + 2 > s->data_end) {
2376 return 0;
2377 }
2378
2379 ret = cpu_to_le16(*(uint16_t *)p);
2380 p += 2;
2381 s->data_ptr = p;
2382 if (p >= s->data_end) {
2383 s->status &= ~DRQ_STAT;
2384 s->end_transfer_func(s);
2385 }
2386
2387 trace_ide_data_readw(addr, ret, bus, s);
2388 return ret;
2389 }
2390
2391 void ide_data_writel(void *opaque, uint32_t addr, uint32_t val)
2392 {
2393 IDEBus *bus = opaque;
2394 IDEState *s = idebus_active_if(bus);
2395 uint8_t *p;
2396
2397 trace_ide_data_writel(addr, val, bus, s);
2398
2399 /* PIO data access allowed only when DRQ bit is set. The result of a write
2400 * during PIO out is indeterminate, just ignore it. */
2401 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2402 return;
2403 }
2404
2405 p = s->data_ptr;
2406 if (p + 4 > s->data_end) {
2407 return;
2408 }
2409
2410 *(uint32_t *)p = le32_to_cpu(val);
2411 p += 4;
2412 s->data_ptr = p;
2413 if (p >= s->data_end) {
2414 s->status &= ~DRQ_STAT;
2415 s->end_transfer_func(s);
2416 }
2417 }
2418
2419 uint32_t ide_data_readl(void *opaque, uint32_t addr)
2420 {
2421 IDEBus *bus = opaque;
2422 IDEState *s = idebus_active_if(bus);
2423 uint8_t *p;
2424 int ret;
2425
2426 /* PIO data access allowed only when DRQ bit is set. The result of a read
2427 * during PIO in is indeterminate, return 0 and don't move forward. */
2428 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2429 ret = 0;
2430 goto out;
2431 }
2432
2433 p = s->data_ptr;
2434 if (p + 4 > s->data_end) {
2435 return 0;
2436 }
2437
2438 ret = cpu_to_le32(*(uint32_t *)p);
2439 p += 4;
2440 s->data_ptr = p;
2441 if (p >= s->data_end) {
2442 s->status &= ~DRQ_STAT;
2443 s->end_transfer_func(s);
2444 }
2445
2446 out:
2447 trace_ide_data_readl(addr, ret, bus, s);
2448 return ret;
2449 }
2450
2451 static void ide_dummy_transfer_stop(IDEState *s)
2452 {
2453 s->data_ptr = s->io_buffer;
2454 s->data_end = s->io_buffer;
2455 s->io_buffer[0] = 0xff;
2456 s->io_buffer[1] = 0xff;
2457 s->io_buffer[2] = 0xff;
2458 s->io_buffer[3] = 0xff;
2459 }
2460
2461 void ide_bus_reset(IDEBus *bus)
2462 {
2463 bus->unit = 0;
2464 bus->cmd = 0;
2465 ide_reset(&bus->ifs[0]);
2466 ide_reset(&bus->ifs[1]);
2467 ide_clear_hob(bus);
2468
2469 /* pending async DMA */
2470 if (bus->dma->aiocb) {
2471 trace_ide_bus_reset_aio();
2472 blk_aio_cancel(bus->dma->aiocb);
2473 bus->dma->aiocb = NULL;
2474 }
2475
2476 /* reset dma provider too */
2477 if (bus->dma->ops->reset) {
2478 bus->dma->ops->reset(bus->dma);
2479 }
2480 }
2481
2482 static bool ide_cd_is_tray_open(void *opaque)
2483 {
2484 return ((IDEState *)opaque)->tray_open;
2485 }
2486
2487 static bool ide_cd_is_medium_locked(void *opaque)
2488 {
2489 return ((IDEState *)opaque)->tray_locked;
2490 }
2491
2492 static void ide_resize_cb(void *opaque)
2493 {
2494 IDEState *s = opaque;
2495 uint64_t nb_sectors;
2496
2497 if (!s->identify_set) {
2498 return;
2499 }
2500
2501 blk_get_geometry(s->blk, &nb_sectors);
2502 s->nb_sectors = nb_sectors;
2503
2504 /* Update the identify data buffer. */
2505 if (s->drive_kind == IDE_CFATA) {
2506 ide_cfata_identify_size(s);
2507 } else {
2508 /* IDE_CD uses a different set of callbacks entirely. */
2509 assert(s->drive_kind != IDE_CD);
2510 ide_identify_size(s);
2511 }
2512 }
2513
2514 static const BlockDevOps ide_cd_block_ops = {
2515 .change_media_cb = ide_cd_change_cb,
2516 .eject_request_cb = ide_cd_eject_request_cb,
2517 .is_tray_open = ide_cd_is_tray_open,
2518 .is_medium_locked = ide_cd_is_medium_locked,
2519 };
2520
2521 static const BlockDevOps ide_hd_block_ops = {
2522 .resize_cb = ide_resize_cb,
2523 };
2524
2525 int ide_init_drive(IDEState *s, BlockBackend *blk, IDEDriveKind kind,
2526 const char *version, const char *serial, const char *model,
2527 uint64_t wwn,
2528 uint32_t cylinders, uint32_t heads, uint32_t secs,
2529 int chs_trans, Error **errp)
2530 {
2531 uint64_t nb_sectors;
2532
2533 s->blk = blk;
2534 s->drive_kind = kind;
2535
2536 blk_get_geometry(blk, &nb_sectors);
2537 s->cylinders = cylinders;
2538 s->heads = heads;
2539 s->sectors = secs;
2540 s->chs_trans = chs_trans;
2541 s->nb_sectors = nb_sectors;
2542 s->wwn = wwn;
2543 /* The SMART values should be preserved across power cycles
2544 but they aren't. */
2545 s->smart_enabled = 1;
2546 s->smart_autosave = 1;
2547 s->smart_errors = 0;
2548 s->smart_selftest_count = 0;
2549 if (kind == IDE_CD) {
2550 blk_set_dev_ops(blk, &ide_cd_block_ops, s);
2551 } else {
2552 if (!blk_is_inserted(s->blk)) {
2553 error_setg(errp, "Device needs media, but drive is empty");
2554 return -1;
2555 }
2556 if (!blk_is_writable(blk)) {
2557 error_setg(errp, "Can't use a read-only drive");
2558 return -1;
2559 }
2560 blk_set_dev_ops(blk, &ide_hd_block_ops, s);
2561 }
2562 if (serial) {
2563 pstrcpy(s->drive_serial_str, sizeof(s->drive_serial_str), serial);
2564 } else {
2565 snprintf(s->drive_serial_str, sizeof(s->drive_serial_str),
2566 "QM%05d", s->drive_serial);
2567 }
2568 if (model) {
2569 pstrcpy(s->drive_model_str, sizeof(s->drive_model_str), model);
2570 } else {
2571 switch (kind) {
2572 case IDE_CD:
2573 strcpy(s->drive_model_str, "QEMU DVD-ROM");
2574 break;
2575 case IDE_CFATA:
2576 strcpy(s->drive_model_str, "QEMU MICRODRIVE");
2577 break;
2578 default:
2579 strcpy(s->drive_model_str, "QEMU HARDDISK");
2580 break;
2581 }
2582 }
2583
2584 if (version) {
2585 pstrcpy(s->version, sizeof(s->version), version);
2586 } else {
2587 pstrcpy(s->version, sizeof(s->version), qemu_hw_version());
2588 }
2589
2590 ide_reset(s);
2591 blk_iostatus_enable(blk);
2592 return 0;
2593 }
2594
2595 static void ide_init1(IDEBus *bus, int unit)
2596 {
2597 static int drive_serial = 1;
2598 IDEState *s = &bus->ifs[unit];
2599
2600 s->bus = bus;
2601 s->unit = unit;
2602 s->drive_serial = drive_serial++;
2603 /* we need at least 2k alignment for accessing CDROMs using O_DIRECT */
2604 s->io_buffer_total_len = IDE_DMA_BUF_SECTORS*512 + 4;
2605 s->io_buffer = qemu_memalign(2048, s->io_buffer_total_len);
2606 memset(s->io_buffer, 0, s->io_buffer_total_len);
2607
2608 s->smart_selftest_data = blk_blockalign(s->blk, 512);
2609 memset(s->smart_selftest_data, 0, 512);
2610
2611 s->sector_write_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
2612 ide_sector_write_timer_cb, s);
2613 }
2614
2615 static int ide_nop_int(const IDEDMA *dma, bool is_write)
2616 {
2617 return 0;
2618 }
2619
2620 static void ide_nop(const IDEDMA *dma)
2621 {
2622 }
2623
2624 static int32_t ide_nop_int32(const IDEDMA *dma, int32_t l)
2625 {
2626 return 0;
2627 }
2628
2629 static const IDEDMAOps ide_dma_nop_ops = {
2630 .prepare_buf = ide_nop_int32,
2631 .restart_dma = ide_nop,
2632 .rw_buf = ide_nop_int,
2633 };
2634
2635 static void ide_restart_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
2636 {
2637 s->unit = s->bus->retry_unit;
2638 ide_set_sector(s, s->bus->retry_sector_num);
2639 s->nsector = s->bus->retry_nsector;
2640 s->bus->dma->ops->restart_dma(s->bus->dma);
2641 s->io_buffer_size = 0;
2642 s->dma_cmd = dma_cmd;
2643 ide_start_dma(s, ide_dma_cb);
2644 }
2645
2646 static void ide_restart_bh(void *opaque)
2647 {
2648 IDEBus *bus = opaque;
2649 IDEState *s;
2650 bool is_read;
2651 int error_status;
2652
2653 qemu_bh_delete(bus->bh);
2654 bus->bh = NULL;
2655
2656 error_status = bus->error_status;
2657 if (bus->error_status == 0) {
2658 return;
2659 }
2660
2661 s = idebus_active_if(bus);
2662 is_read = (bus->error_status & IDE_RETRY_READ) != 0;
2663
2664 /* The error status must be cleared before resubmitting the request: The
2665 * request may fail again, and this case can only be distinguished if the
2666 * called function can set a new error status. */
2667 bus->error_status = 0;
2668
2669 /* The HBA has generically asked to be kicked on retry */
2670 if (error_status & IDE_RETRY_HBA) {
2671 if (s->bus->dma->ops->restart) {
2672 s->bus->dma->ops->restart(s->bus->dma);
2673 }
2674 } else if (IS_IDE_RETRY_DMA(error_status)) {
2675 if (error_status & IDE_RETRY_TRIM) {
2676 ide_restart_dma(s, IDE_DMA_TRIM);
2677 } else {
2678 ide_restart_dma(s, is_read ? IDE_DMA_READ : IDE_DMA_WRITE);
2679 }
2680 } else if (IS_IDE_RETRY_PIO(error_status)) {
2681 if (is_read) {
2682 ide_sector_read(s);
2683 } else {
2684 ide_sector_write(s);
2685 }
2686 } else if (error_status & IDE_RETRY_FLUSH) {
2687 ide_flush_cache(s);
2688 } else if (IS_IDE_RETRY_ATAPI(error_status)) {
2689 assert(s->end_transfer_func == ide_atapi_cmd);
2690 ide_atapi_dma_restart(s);
2691 } else {
2692 abort();
2693 }
2694 }
2695
2696 static void ide_restart_cb(void *opaque, bool running, RunState state)
2697 {
2698 IDEBus *bus = opaque;
2699
2700 if (!running)
2701 return;
2702
2703 if (!bus->bh) {
2704 bus->bh = qemu_bh_new(ide_restart_bh, bus);
2705 qemu_bh_schedule(bus->bh);
2706 }
2707 }
2708
2709 void ide_register_restart_cb(IDEBus *bus)
2710 {
2711 if (bus->dma->ops->restart_dma) {
2712 bus->vmstate = qemu_add_vm_change_state_handler(ide_restart_cb, bus);
2713 }
2714 }
2715
2716 static IDEDMA ide_dma_nop = {
2717 .ops = &ide_dma_nop_ops,
2718 .aiocb = NULL,
2719 };
2720
2721 void ide_init2(IDEBus *bus, qemu_irq irq)
2722 {
2723 int i;
2724
2725 for(i = 0; i < 2; i++) {
2726 ide_init1(bus, i);
2727 ide_reset(&bus->ifs[i]);
2728 }
2729 bus->irq = irq;
2730 bus->dma = &ide_dma_nop;
2731 }
2732
2733 void ide_exit(IDEState *s)
2734 {
2735 timer_free(s->sector_write_timer);
2736 qemu_vfree(s->smart_selftest_data);
2737 qemu_vfree(s->io_buffer);
2738 }
2739
2740 static bool is_identify_set(void *opaque, int version_id)
2741 {
2742 IDEState *s = opaque;
2743
2744 return s->identify_set != 0;
2745 }
2746
2747 static EndTransferFunc* transfer_end_table[] = {
2748 ide_sector_read,
2749 ide_sector_write,
2750 ide_transfer_stop,
2751 ide_atapi_cmd_reply_end,
2752 ide_atapi_cmd,
2753 ide_dummy_transfer_stop,
2754 };
2755
2756 static int transfer_end_table_idx(EndTransferFunc *fn)
2757 {
2758 int i;
2759
2760 for (i = 0; i < ARRAY_SIZE(transfer_end_table); i++)
2761 if (transfer_end_table[i] == fn)
2762 return i;
2763
2764 return -1;
2765 }
2766
2767 static int ide_drive_post_load(void *opaque, int version_id)
2768 {
2769 IDEState *s = opaque;
2770
2771 if (s->blk && s->identify_set) {
2772 blk_set_enable_write_cache(s->blk, !!(s->identify_data[85] & (1 << 5)));
2773 }
2774 return 0;
2775 }
2776
2777 static int ide_drive_pio_post_load(void *opaque, int version_id)
2778 {
2779 IDEState *s = opaque;
2780
2781 if (s->end_transfer_fn_idx >= ARRAY_SIZE(transfer_end_table)) {
2782 return -EINVAL;
2783 }
2784 s->end_transfer_func = transfer_end_table[s->end_transfer_fn_idx];
2785 s->data_ptr = s->io_buffer + s->cur_io_buffer_offset;
2786 s->data_end = s->data_ptr + s->cur_io_buffer_len;
2787 s->atapi_dma = s->feature & 1; /* as per cmd_packet */
2788
2789 return 0;
2790 }
2791
2792 static int ide_drive_pio_pre_save(void *opaque)
2793 {
2794 IDEState *s = opaque;
2795 int idx;
2796
2797 s->cur_io_buffer_offset = s->data_ptr - s->io_buffer;
2798 s->cur_io_buffer_len = s->data_end - s->data_ptr;
2799
2800 idx = transfer_end_table_idx(s->end_transfer_func);
2801 if (idx == -1) {
2802 fprintf(stderr, "%s: invalid end_transfer_func for DRQ_STAT\n",
2803 __func__);
2804 s->end_transfer_fn_idx = 2;
2805 } else {
2806 s->end_transfer_fn_idx = idx;
2807 }
2808
2809 return 0;
2810 }
2811
2812 static bool ide_drive_pio_state_needed(void *opaque)
2813 {
2814 IDEState *s = opaque;
2815
2816 return ((s->status & DRQ_STAT) != 0)
2817 || (s->bus->error_status & IDE_RETRY_PIO);
2818 }
2819
2820 static bool ide_tray_state_needed(void *opaque)
2821 {
2822 IDEState *s = opaque;
2823
2824 return s->tray_open || s->tray_locked;
2825 }
2826
2827 static bool ide_atapi_gesn_needed(void *opaque)
2828 {
2829 IDEState *s = opaque;
2830
2831 return s->events.new_media || s->events.eject_request;
2832 }
2833
2834 static bool ide_error_needed(void *opaque)
2835 {
2836 IDEBus *bus = opaque;
2837
2838 return (bus->error_status != 0);
2839 }
2840
2841 /* Fields for GET_EVENT_STATUS_NOTIFICATION ATAPI command */
2842 static const VMStateDescription vmstate_ide_atapi_gesn_state = {
2843 .name ="ide_drive/atapi/gesn_state",
2844 .version_id = 1,
2845 .minimum_version_id = 1,
2846 .needed = ide_atapi_gesn_needed,
2847 .fields = (VMStateField[]) {
2848 VMSTATE_BOOL(events.new_media, IDEState),
2849 VMSTATE_BOOL(events.eject_request, IDEState),
2850 VMSTATE_END_OF_LIST()
2851 }
2852 };
2853
2854 static const VMStateDescription vmstate_ide_tray_state = {
2855 .name = "ide_drive/tray_state",
2856 .version_id = 1,
2857 .minimum_version_id = 1,
2858 .needed = ide_tray_state_needed,
2859 .fields = (VMStateField[]) {
2860 VMSTATE_BOOL(tray_open, IDEState),
2861 VMSTATE_BOOL(tray_locked, IDEState),
2862 VMSTATE_END_OF_LIST()
2863 }
2864 };
2865
2866 static const VMStateDescription vmstate_ide_drive_pio_state = {
2867 .name = "ide_drive/pio_state",
2868 .version_id = 1,
2869 .minimum_version_id = 1,
2870 .pre_save = ide_drive_pio_pre_save,
2871 .post_load = ide_drive_pio_post_load,
2872 .needed = ide_drive_pio_state_needed,
2873 .fields = (VMStateField[]) {
2874 VMSTATE_INT32(req_nb_sectors, IDEState),
2875 VMSTATE_VARRAY_INT32(io_buffer, IDEState, io_buffer_total_len, 1,
2876 vmstate_info_uint8, uint8_t),
2877 VMSTATE_INT32(cur_io_buffer_offset, IDEState),
2878 VMSTATE_INT32(cur_io_buffer_len, IDEState),
2879 VMSTATE_UINT8(end_transfer_fn_idx, IDEState),
2880 VMSTATE_INT32(elementary_transfer_size, IDEState),
2881 VMSTATE_INT32(packet_transfer_size, IDEState),
2882 VMSTATE_END_OF_LIST()
2883 }
2884 };
2885
2886 const VMStateDescription vmstate_ide_drive = {
2887 .name = "ide_drive",
2888 .version_id = 3,
2889 .minimum_version_id = 0,
2890 .post_load = ide_drive_post_load,
2891 .fields = (VMStateField[]) {
2892 VMSTATE_INT32(mult_sectors, IDEState),
2893 VMSTATE_INT32(identify_set, IDEState),
2894 VMSTATE_BUFFER_TEST(identify_data, IDEState, is_identify_set),
2895 VMSTATE_UINT8(feature, IDEState),
2896 VMSTATE_UINT8(error, IDEState),
2897 VMSTATE_UINT32(nsector, IDEState),
2898 VMSTATE_UINT8(sector, IDEState),
2899 VMSTATE_UINT8(lcyl, IDEState),
2900 VMSTATE_UINT8(hcyl, IDEState),
2901 VMSTATE_UINT8(hob_feature, IDEState),
2902 VMSTATE_UINT8(hob_sector, IDEState),
2903 VMSTATE_UINT8(hob_nsector, IDEState),
2904 VMSTATE_UINT8(hob_lcyl, IDEState),
2905 VMSTATE_UINT8(hob_hcyl, IDEState),
2906 VMSTATE_UINT8(select, IDEState),
2907 VMSTATE_UINT8(status, IDEState),
2908 VMSTATE_UINT8(lba48, IDEState),
2909 VMSTATE_UINT8(sense_key, IDEState),
2910 VMSTATE_UINT8(asc, IDEState),
2911 VMSTATE_UINT8_V(cdrom_changed, IDEState, 3),
2912 VMSTATE_END_OF_LIST()
2913 },
2914 .subsections = (const VMStateDescription*[]) {
2915 &vmstate_ide_drive_pio_state,
2916 &vmstate_ide_tray_state,
2917 &vmstate_ide_atapi_gesn_state,
2918 NULL
2919 }
2920 };
2921
2922 static const VMStateDescription vmstate_ide_error_status = {
2923 .name ="ide_bus/error",
2924 .version_id = 2,
2925 .minimum_version_id = 1,
2926 .needed = ide_error_needed,
2927 .fields = (VMStateField[]) {
2928 VMSTATE_INT32(error_status, IDEBus),
2929 VMSTATE_INT64_V(retry_sector_num, IDEBus, 2),
2930 VMSTATE_UINT32_V(retry_nsector, IDEBus, 2),
2931 VMSTATE_UINT8_V(retry_unit, IDEBus, 2),
2932 VMSTATE_END_OF_LIST()
2933 }
2934 };
2935
2936 const VMStateDescription vmstate_ide_bus = {
2937 .name = "ide_bus",
2938 .version_id = 1,
2939 .minimum_version_id = 1,
2940 .fields = (VMStateField[]) {
2941 VMSTATE_UINT8(cmd, IDEBus),
2942 VMSTATE_UINT8(unit, IDEBus),
2943 VMSTATE_END_OF_LIST()
2944 },
2945 .subsections = (const VMStateDescription*[]) {
2946 &vmstate_ide_error_status,
2947 NULL
2948 }
2949 };
2950
2951 void ide_drive_get(DriveInfo **hd, int n)
2952 {
2953 int i;
2954
2955 for (i = 0; i < n; i++) {
2956 hd[i] = drive_get_by_index(IF_IDE, i);
2957 }
2958 }
QEmu