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softfloat: Inline float128 compare specializations
[qemu/ericb.git] / hw / ide / core.c
blob689bb36409ed6e901d1df9d875881893a9d54c9d
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 (iocb->i >= 0) {
446 if (ret >= 0) {
447 block_acct_done(blk_get_stats(s->blk), &s->acct);
448 } else {
449 block_acct_failed(blk_get_stats(s->blk), &s->acct);
450 }
451 }
452
453 if (ret >= 0) {
454 while (iocb->j < iocb->qiov->niov) {
455 int j = iocb->j;
456 while (++iocb->i < iocb->qiov->iov[j].iov_len / 8) {
457 int i = iocb->i;
458 uint64_t *buffer = iocb->qiov->iov[j].iov_base;
459
460 /* 6-byte LBA + 2-byte range per entry */
461 uint64_t entry = le64_to_cpu(buffer[i]);
462 uint64_t sector = entry & 0x0000ffffffffffffULL;
463 uint16_t count = entry >> 48;
464
465 if (count == 0) {
466 continue;
467 }
468
469 if (!ide_sect_range_ok(s, sector, count)) {
470 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_UNMAP);
471 iocb->ret = -EINVAL;
472 goto done;
473 }
474
475 block_acct_start(blk_get_stats(s->blk), &s->acct,
476 count << BDRV_SECTOR_BITS, BLOCK_ACCT_UNMAP);
477
478 /* Got an entry! Submit and exit. */
479 iocb->aiocb = blk_aio_pdiscard(s->blk,
480 sector << BDRV_SECTOR_BITS,
481 count << BDRV_SECTOR_BITS,
482 ide_issue_trim_cb, opaque);
483 return;
484 }
485
486 iocb->j++;
487 iocb->i = -1;
488 }
489 } else {
490 iocb->ret = ret;
491 }
492
493 done:
494 iocb->aiocb = NULL;
495 if (iocb->bh) {
496 replay_bh_schedule_event(iocb->bh);
497 }
498 }
499
500 BlockAIOCB *ide_issue_trim(
501 int64_t offset, QEMUIOVector *qiov,
502 BlockCompletionFunc *cb, void *cb_opaque, void *opaque)
503 {
504 IDEState *s = opaque;
505 TrimAIOCB *iocb;
506
507 iocb = blk_aio_get(&trim_aiocb_info, s->blk, cb, cb_opaque);
508 iocb->s = s;
509 iocb->bh = qemu_bh_new(ide_trim_bh_cb, iocb);
510 iocb->ret = 0;
511 iocb->qiov = qiov;
512 iocb->i = -1;
513 iocb->j = 0;
514 ide_issue_trim_cb(iocb, 0);
515 return &iocb->common;
516 }
517
518 void ide_abort_command(IDEState *s)
519 {
520 ide_transfer_stop(s);
521 s->status = READY_STAT | ERR_STAT;
522 s->error = ABRT_ERR;
523 }
524
525 static void ide_set_retry(IDEState *s)
526 {
527 s->bus->retry_unit = s->unit;
528 s->bus->retry_sector_num = ide_get_sector(s);
529 s->bus->retry_nsector = s->nsector;
530 }
531
532 static void ide_clear_retry(IDEState *s)
533 {
534 s->bus->retry_unit = -1;
535 s->bus->retry_sector_num = 0;
536 s->bus->retry_nsector = 0;
537 }
538
539 /* prepare data transfer and tell what to do after */
540 bool ide_transfer_start_norecurse(IDEState *s, uint8_t *buf, int size,
541 EndTransferFunc *end_transfer_func)
542 {
543 s->data_ptr = buf;
544 s->data_end = buf + size;
545 ide_set_retry(s);
546 if (!(s->status & ERR_STAT)) {
547 s->status |= DRQ_STAT;
548 }
549 if (!s->bus->dma->ops->pio_transfer) {
550 s->end_transfer_func = end_transfer_func;
551 return false;
552 }
553 s->bus->dma->ops->pio_transfer(s->bus->dma);
554 return true;
555 }
556
557 void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
558 EndTransferFunc *end_transfer_func)
559 {
560 if (ide_transfer_start_norecurse(s, buf, size, end_transfer_func)) {
561 end_transfer_func(s);
562 }
563 }
564
565 static void ide_cmd_done(IDEState *s)
566 {
567 if (s->bus->dma->ops->cmd_done) {
568 s->bus->dma->ops->cmd_done(s->bus->dma);
569 }
570 }
571
572 static void ide_transfer_halt(IDEState *s)
573 {
574 s->end_transfer_func = ide_transfer_stop;
575 s->data_ptr = s->io_buffer;
576 s->data_end = s->io_buffer;
577 s->status &= ~DRQ_STAT;
578 }
579
580 void ide_transfer_stop(IDEState *s)
581 {
582 ide_transfer_halt(s);
583 ide_cmd_done(s);
584 }
585
586 int64_t ide_get_sector(IDEState *s)
587 {
588 int64_t sector_num;
589 if (s->select & 0x40) {
590 /* lba */
591 if (!s->lba48) {
592 sector_num = ((s->select & 0x0f) << 24) | (s->hcyl << 16) |
593 (s->lcyl << 8) | s->sector;
594 } else {
595 sector_num = ((int64_t)s->hob_hcyl << 40) |
596 ((int64_t) s->hob_lcyl << 32) |
597 ((int64_t) s->hob_sector << 24) |
598 ((int64_t) s->hcyl << 16) |
599 ((int64_t) s->lcyl << 8) | s->sector;
600 }
601 } else {
602 sector_num = ((s->hcyl << 8) | s->lcyl) * s->heads * s->sectors +
603 (s->select & 0x0f) * s->sectors + (s->sector - 1);
604 }
605 return sector_num;
606 }
607
608 void ide_set_sector(IDEState *s, int64_t sector_num)
609 {
610 unsigned int cyl, r;
611 if (s->select & 0x40) {
612 if (!s->lba48) {
613 s->select = (s->select & 0xf0) | (sector_num >> 24);
614 s->hcyl = (sector_num >> 16);
615 s->lcyl = (sector_num >> 8);
616 s->sector = (sector_num);
617 } else {
618 s->sector = sector_num;
619 s->lcyl = sector_num >> 8;
620 s->hcyl = sector_num >> 16;
621 s->hob_sector = sector_num >> 24;
622 s->hob_lcyl = sector_num >> 32;
623 s->hob_hcyl = sector_num >> 40;
624 }
625 } else {
626 cyl = sector_num / (s->heads * s->sectors);
627 r = sector_num % (s->heads * s->sectors);
628 s->hcyl = cyl >> 8;
629 s->lcyl = cyl;
630 s->select = (s->select & 0xf0) | ((r / s->sectors) & 0x0f);
631 s->sector = (r % s->sectors) + 1;
632 }
633 }
634
635 static void ide_rw_error(IDEState *s) {
636 ide_abort_command(s);
637 ide_set_irq(s->bus);
638 }
639
640 static void ide_buffered_readv_cb(void *opaque, int ret)
641 {
642 IDEBufferedRequest *req = opaque;
643 if (!req->orphaned) {
644 if (!ret) {
645 assert(req->qiov.size == req->original_qiov->size);
646 qemu_iovec_from_buf(req->original_qiov, 0,
647 req->qiov.local_iov.iov_base,
648 req->original_qiov->size);
649 }
650 req->original_cb(req->original_opaque, ret);
651 }
652 QLIST_REMOVE(req, list);
653 qemu_vfree(qemu_iovec_buf(&req->qiov));
654 g_free(req);
655 }
656
657 #define MAX_BUFFERED_REQS 16
658
659 BlockAIOCB *ide_buffered_readv(IDEState *s, int64_t sector_num,
660 QEMUIOVector *iov, int nb_sectors,
661 BlockCompletionFunc *cb, void *opaque)
662 {
663 BlockAIOCB *aioreq;
664 IDEBufferedRequest *req;
665 int c = 0;
666
667 QLIST_FOREACH(req, &s->buffered_requests, list) {
668 c++;
669 }
670 if (c > MAX_BUFFERED_REQS) {
671 return blk_abort_aio_request(s->blk, cb, opaque, -EIO);
672 }
673
674 req = g_new0(IDEBufferedRequest, 1);
675 req->original_qiov = iov;
676 req->original_cb = cb;
677 req->original_opaque = opaque;
678 qemu_iovec_init_buf(&req->qiov, blk_blockalign(s->blk, iov->size),
679 iov->size);
680
681 aioreq = blk_aio_preadv(s->blk, sector_num << BDRV_SECTOR_BITS,
682 &req->qiov, 0, ide_buffered_readv_cb, req);
683
684 QLIST_INSERT_HEAD(&s->buffered_requests, req, list);
685 return aioreq;
686 }
687
688 /**
689 * Cancel all pending DMA requests.
690 * Any buffered DMA requests are instantly canceled,
691 * but any pending unbuffered DMA requests must be waited on.
692 */
693 void ide_cancel_dma_sync(IDEState *s)
694 {
695 IDEBufferedRequest *req;
696
697 /* First invoke the callbacks of all buffered requests
698 * and flag those requests as orphaned. Ideally there
699 * are no unbuffered (Scatter Gather DMA Requests or
700 * write requests) pending and we can avoid to drain. */
701 QLIST_FOREACH(req, &s->buffered_requests, list) {
702 if (!req->orphaned) {
703 trace_ide_cancel_dma_sync_buffered(req->original_cb, req);
704 req->original_cb(req->original_opaque, -ECANCELED);
705 }
706 req->orphaned = true;
707 }
708
709 /*
710 * We can't cancel Scatter Gather DMA in the middle of the
711 * operation or a partial (not full) DMA transfer would reach
712 * the storage so we wait for completion instead (we beahve
713 * like if the DMA was completed by the time the guest trying
714 * to cancel dma with bmdma_cmd_writeb with BM_CMD_START not
715 * set).
716 *
717 * In the future we'll be able to safely cancel the I/O if the
718 * whole DMA operation will be submitted to disk with a single
719 * aio operation with preadv/pwritev.
720 */
721 if (s->bus->dma->aiocb) {
722 trace_ide_cancel_dma_sync_remaining();
723 blk_drain(s->blk);
724 assert(s->bus->dma->aiocb == NULL);
725 }
726 }
727
728 static void ide_sector_read(IDEState *s);
729
730 static void ide_sector_read_cb(void *opaque, int ret)
731 {
732 IDEState *s = opaque;
733 int n;
734
735 s->pio_aiocb = NULL;
736 s->status &= ~BUSY_STAT;
737
738 if (ret != 0) {
739 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO |
740 IDE_RETRY_READ)) {
741 return;
742 }
743 }
744
745 block_acct_done(blk_get_stats(s->blk), &s->acct);
746
747 n = s->nsector;
748 if (n > s->req_nb_sectors) {
749 n = s->req_nb_sectors;
750 }
751
752 ide_set_sector(s, ide_get_sector(s) + n);
753 s->nsector -= n;
754 /* Allow the guest to read the io_buffer */
755 ide_transfer_start(s, s->io_buffer, n * BDRV_SECTOR_SIZE, ide_sector_read);
756 ide_set_irq(s->bus);
757 }
758
759 static void ide_sector_read(IDEState *s)
760 {
761 int64_t sector_num;
762 int n;
763
764 s->status = READY_STAT | SEEK_STAT;
765 s->error = 0; /* not needed by IDE spec, but needed by Windows */
766 sector_num = ide_get_sector(s);
767 n = s->nsector;
768
769 if (n == 0) {
770 ide_transfer_stop(s);
771 return;
772 }
773
774 s->status |= BUSY_STAT;
775
776 if (n > s->req_nb_sectors) {
777 n = s->req_nb_sectors;
778 }
779
780 trace_ide_sector_read(sector_num, n);
781
782 if (!ide_sect_range_ok(s, sector_num, n)) {
783 ide_rw_error(s);
784 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_READ);
785 return;
786 }
787
788 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
789
790 block_acct_start(blk_get_stats(s->blk), &s->acct,
791 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
792 s->pio_aiocb = ide_buffered_readv(s, sector_num, &s->qiov, n,
793 ide_sector_read_cb, s);
794 }
795
796 void dma_buf_commit(IDEState *s, uint32_t tx_bytes)
797 {
798 if (s->bus->dma->ops->commit_buf) {
799 s->bus->dma->ops->commit_buf(s->bus->dma, tx_bytes);
800 }
801 s->io_buffer_offset += tx_bytes;
802 qemu_sglist_destroy(&s->sg);
803 }
804
805 void ide_set_inactive(IDEState *s, bool more)
806 {
807 s->bus->dma->aiocb = NULL;
808 ide_clear_retry(s);
809 if (s->bus->dma->ops->set_inactive) {
810 s->bus->dma->ops->set_inactive(s->bus->dma, more);
811 }
812 ide_cmd_done(s);
813 }
814
815 void ide_dma_error(IDEState *s)
816 {
817 dma_buf_commit(s, 0);
818 ide_abort_command(s);
819 ide_set_inactive(s, false);
820 ide_set_irq(s->bus);
821 }
822
823 int ide_handle_rw_error(IDEState *s, int error, int op)
824 {
825 bool is_read = (op & IDE_RETRY_READ) != 0;
826 BlockErrorAction action = blk_get_error_action(s->blk, is_read, error);
827
828 if (action == BLOCK_ERROR_ACTION_STOP) {
829 assert(s->bus->retry_unit == s->unit);
830 s->bus->error_status = op;
831 } else if (action == BLOCK_ERROR_ACTION_REPORT) {
832 block_acct_failed(blk_get_stats(s->blk), &s->acct);
833 if (IS_IDE_RETRY_DMA(op)) {
834 ide_dma_error(s);
835 } else if (IS_IDE_RETRY_ATAPI(op)) {
836 ide_atapi_io_error(s, -error);
837 } else {
838 ide_rw_error(s);
839 }
840 }
841 blk_error_action(s->blk, action, is_read, error);
842 return action != BLOCK_ERROR_ACTION_IGNORE;
843 }
844
845 static void ide_dma_cb(void *opaque, int ret)
846 {
847 IDEState *s = opaque;
848 int n;
849 int64_t sector_num;
850 uint64_t offset;
851 bool stay_active = false;
852 int32_t prep_size = 0;
853
854 if (ret == -EINVAL) {
855 ide_dma_error(s);
856 return;
857 }
858
859 if (ret < 0) {
860 if (ide_handle_rw_error(s, -ret, ide_dma_cmd_to_retry(s->dma_cmd))) {
861 s->bus->dma->aiocb = NULL;
862 dma_buf_commit(s, 0);
863 return;
864 }
865 }
866
867 if (s->io_buffer_size > s->nsector * 512) {
868 /*
869 * The PRDs were longer than needed for this request.
870 * The Active bit must remain set after the request completes.
871 */
872 n = s->nsector;
873 stay_active = true;
874 } else {
875 n = s->io_buffer_size >> 9;
876 }
877
878 sector_num = ide_get_sector(s);
879 if (n > 0) {
880 assert(n * 512 == s->sg.size);
881 dma_buf_commit(s, s->sg.size);
882 sector_num += n;
883 ide_set_sector(s, sector_num);
884 s->nsector -= n;
885 }
886
887 /* end of transfer ? */
888 if (s->nsector == 0) {
889 s->status = READY_STAT | SEEK_STAT;
890 ide_set_irq(s->bus);
891 goto eot;
892 }
893
894 /* launch next transfer */
895 n = s->nsector;
896 s->io_buffer_index = 0;
897 s->io_buffer_size = n * 512;
898 prep_size = s->bus->dma->ops->prepare_buf(s->bus->dma, s->io_buffer_size);
899 /* prepare_buf() must succeed and respect the limit */
900 assert(prep_size >= 0 && prep_size <= n * 512);
901
902 /*
903 * Now prep_size stores the number of bytes in the sglist, and
904 * s->io_buffer_size stores the number of bytes described by the PRDs.
905 */
906
907 if (prep_size < n * 512) {
908 /*
909 * The PRDs are too short for this request. Error condition!
910 * Reset the Active bit and don't raise the interrupt.
911 */
912 s->status = READY_STAT | SEEK_STAT;
913 dma_buf_commit(s, 0);
914 goto eot;
915 }
916
917 trace_ide_dma_cb(s, sector_num, n, IDE_DMA_CMD_str(s->dma_cmd));
918
919 if ((s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) &&
920 !ide_sect_range_ok(s, sector_num, n)) {
921 ide_dma_error(s);
922 block_acct_invalid(blk_get_stats(s->blk), s->acct.type);
923 return;
924 }
925
926 offset = sector_num << BDRV_SECTOR_BITS;
927 switch (s->dma_cmd) {
928 case IDE_DMA_READ:
929 s->bus->dma->aiocb = dma_blk_read(s->blk, &s->sg, offset,
930 BDRV_SECTOR_SIZE, ide_dma_cb, s);
931 break;
932 case IDE_DMA_WRITE:
933 s->bus->dma->aiocb = dma_blk_write(s->blk, &s->sg, offset,
934 BDRV_SECTOR_SIZE, ide_dma_cb, s);
935 break;
936 case IDE_DMA_TRIM:
937 s->bus->dma->aiocb = dma_blk_io(blk_get_aio_context(s->blk),
938 &s->sg, offset, BDRV_SECTOR_SIZE,
939 ide_issue_trim, s, ide_dma_cb, s,
940 DMA_DIRECTION_TO_DEVICE);
941 break;
942 default:
943 abort();
944 }
945 return;
946
947 eot:
948 if (s->dma_cmd == IDE_DMA_READ || s->dma_cmd == IDE_DMA_WRITE) {
949 block_acct_done(blk_get_stats(s->blk), &s->acct);
950 }
951 ide_set_inactive(s, stay_active);
952 }
953
954 static void ide_sector_start_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
955 {
956 s->status = READY_STAT | SEEK_STAT | DRQ_STAT;
957 s->io_buffer_size = 0;
958 s->dma_cmd = dma_cmd;
959
960 switch (dma_cmd) {
961 case IDE_DMA_READ:
962 block_acct_start(blk_get_stats(s->blk), &s->acct,
963 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_READ);
964 break;
965 case IDE_DMA_WRITE:
966 block_acct_start(blk_get_stats(s->blk), &s->acct,
967 s->nsector * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
968 break;
969 default:
970 break;
971 }
972
973 ide_start_dma(s, ide_dma_cb);
974 }
975
976 void ide_start_dma(IDEState *s, BlockCompletionFunc *cb)
977 {
978 s->io_buffer_index = 0;
979 ide_set_retry(s);
980 if (s->bus->dma->ops->start_dma) {
981 s->bus->dma->ops->start_dma(s->bus->dma, s, cb);
982 }
983 }
984
985 static void ide_sector_write(IDEState *s);
986
987 static void ide_sector_write_timer_cb(void *opaque)
988 {
989 IDEState *s = opaque;
990 ide_set_irq(s->bus);
991 }
992
993 static void ide_sector_write_cb(void *opaque, int ret)
994 {
995 IDEState *s = opaque;
996 int n;
997
998 s->pio_aiocb = NULL;
999 s->status &= ~BUSY_STAT;
1000
1001 if (ret != 0) {
1002 if (ide_handle_rw_error(s, -ret, IDE_RETRY_PIO)) {
1003 return;
1004 }
1005 }
1006
1007 block_acct_done(blk_get_stats(s->blk), &s->acct);
1008
1009 n = s->nsector;
1010 if (n > s->req_nb_sectors) {
1011 n = s->req_nb_sectors;
1012 }
1013 s->nsector -= n;
1014
1015 ide_set_sector(s, ide_get_sector(s) + n);
1016 if (s->nsector == 0) {
1017 /* no more sectors to write */
1018 ide_transfer_stop(s);
1019 } else {
1020 int n1 = s->nsector;
1021 if (n1 > s->req_nb_sectors) {
1022 n1 = s->req_nb_sectors;
1023 }
1024 ide_transfer_start(s, s->io_buffer, n1 * BDRV_SECTOR_SIZE,
1025 ide_sector_write);
1026 }
1027
1028 if (win2k_install_hack && ((++s->irq_count % 16) == 0)) {
1029 /* It seems there is a bug in the Windows 2000 installer HDD
1030 IDE driver which fills the disk with empty logs when the
1031 IDE write IRQ comes too early. This hack tries to correct
1032 that at the expense of slower write performances. Use this
1033 option _only_ to install Windows 2000. You must disable it
1034 for normal use. */
1035 timer_mod(s->sector_write_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
1036 (NANOSECONDS_PER_SECOND / 1000));
1037 } else {
1038 ide_set_irq(s->bus);
1039 }
1040 }
1041
1042 static void ide_sector_write(IDEState *s)
1043 {
1044 int64_t sector_num;
1045 int n;
1046
1047 s->status = READY_STAT | SEEK_STAT | BUSY_STAT;
1048 sector_num = ide_get_sector(s);
1049
1050 n = s->nsector;
1051 if (n > s->req_nb_sectors) {
1052 n = s->req_nb_sectors;
1053 }
1054
1055 trace_ide_sector_write(sector_num, n);
1056
1057 if (!ide_sect_range_ok(s, sector_num, n)) {
1058 ide_rw_error(s);
1059 block_acct_invalid(blk_get_stats(s->blk), BLOCK_ACCT_WRITE);
1060 return;
1061 }
1062
1063 qemu_iovec_init_buf(&s->qiov, s->io_buffer, n * BDRV_SECTOR_SIZE);
1064
1065 block_acct_start(blk_get_stats(s->blk), &s->acct,
1066 n * BDRV_SECTOR_SIZE, BLOCK_ACCT_WRITE);
1067 s->pio_aiocb = blk_aio_pwritev(s->blk, sector_num << BDRV_SECTOR_BITS,
1068 &s->qiov, 0, ide_sector_write_cb, s);
1069 }
1070
1071 static void ide_flush_cb(void *opaque, int ret)
1072 {
1073 IDEState *s = opaque;
1074
1075 s->pio_aiocb = NULL;
1076
1077 if (ret < 0) {
1078 /* XXX: What sector number to set here? */
1079 if (ide_handle_rw_error(s, -ret, IDE_RETRY_FLUSH)) {
1080 return;
1081 }
1082 }
1083
1084 if (s->blk) {
1085 block_acct_done(blk_get_stats(s->blk), &s->acct);
1086 }
1087 s->status = READY_STAT | SEEK_STAT;
1088 ide_cmd_done(s);
1089 ide_set_irq(s->bus);
1090 }
1091
1092 static void ide_flush_cache(IDEState *s)
1093 {
1094 if (s->blk == NULL) {
1095 ide_flush_cb(s, 0);
1096 return;
1097 }
1098
1099 s->status |= BUSY_STAT;
1100 ide_set_retry(s);
1101 block_acct_start(blk_get_stats(s->blk), &s->acct, 0, BLOCK_ACCT_FLUSH);
1102 s->pio_aiocb = blk_aio_flush(s->blk, ide_flush_cb, s);
1103 }
1104
1105 static void ide_cfata_metadata_inquiry(IDEState *s)
1106 {
1107 uint16_t *p;
1108 uint32_t spd;
1109
1110 p = (uint16_t *) s->io_buffer;
1111 memset(p, 0, 0x200);
1112 spd = ((s->mdata_size - 1) >> 9) + 1;
1113
1114 put_le16(p + 0, 0x0001); /* Data format revision */
1115 put_le16(p + 1, 0x0000); /* Media property: silicon */
1116 put_le16(p + 2, s->media_changed); /* Media status */
1117 put_le16(p + 3, s->mdata_size & 0xffff); /* Capacity in bytes (low) */
1118 put_le16(p + 4, s->mdata_size >> 16); /* Capacity in bytes (high) */
1119 put_le16(p + 5, spd & 0xffff); /* Sectors per device (low) */
1120 put_le16(p + 6, spd >> 16); /* Sectors per device (high) */
1121 }
1122
1123 static void ide_cfata_metadata_read(IDEState *s)
1124 {
1125 uint16_t *p;
1126
1127 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1128 s->status = ERR_STAT;
1129 s->error = ABRT_ERR;
1130 return;
1131 }
1132
1133 p = (uint16_t *) s->io_buffer;
1134 memset(p, 0, 0x200);
1135
1136 put_le16(p + 0, s->media_changed); /* Media status */
1137 memcpy(p + 1, s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1138 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1139 s->nsector << 9), 0x200 - 2));
1140 }
1141
1142 static void ide_cfata_metadata_write(IDEState *s)
1143 {
1144 if (((s->hcyl << 16) | s->lcyl) << 9 > s->mdata_size + 2) {
1145 s->status = ERR_STAT;
1146 s->error = ABRT_ERR;
1147 return;
1148 }
1149
1150 s->media_changed = 0;
1151
1152 memcpy(s->mdata_storage + (((s->hcyl << 16) | s->lcyl) << 9),
1153 s->io_buffer + 2,
1154 MIN(MIN(s->mdata_size - (((s->hcyl << 16) | s->lcyl) << 9),
1155 s->nsector << 9), 0x200 - 2));
1156 }
1157
1158 /* called when the inserted state of the media has changed */
1159 static void ide_cd_change_cb(void *opaque, bool load, Error **errp)
1160 {
1161 IDEState *s = opaque;
1162 uint64_t nb_sectors;
1163
1164 s->tray_open = !load;
1165 blk_get_geometry(s->blk, &nb_sectors);
1166 s->nb_sectors = nb_sectors;
1167
1168 /*
1169 * First indicate to the guest that a CD has been removed. That's
1170 * done on the next command the guest sends us.
1171 *
1172 * Then we set UNIT_ATTENTION, by which the guest will
1173 * detect a new CD in the drive. See ide_atapi_cmd() for details.
1174 */
1175 s->cdrom_changed = 1;
1176 s->events.new_media = true;
1177 s->events.eject_request = false;
1178 ide_set_irq(s->bus);
1179 }
1180
1181 static void ide_cd_eject_request_cb(void *opaque, bool force)
1182 {
1183 IDEState *s = opaque;
1184
1185 s->events.eject_request = true;
1186 if (force) {
1187 s->tray_locked = false;
1188 }
1189 ide_set_irq(s->bus);
1190 }
1191
1192 static void ide_cmd_lba48_transform(IDEState *s, int lba48)
1193 {
1194 s->lba48 = lba48;
1195
1196 /* handle the 'magic' 0 nsector count conversion here. to avoid
1197 * fiddling with the rest of the read logic, we just store the
1198 * full sector count in ->nsector and ignore ->hob_nsector from now
1199 */
1200 if (!s->lba48) {
1201 if (!s->nsector)
1202 s->nsector = 256;
1203 } else {
1204 if (!s->nsector && !s->hob_nsector)
1205 s->nsector = 65536;
1206 else {
1207 int lo = s->nsector;
1208 int hi = s->hob_nsector;
1209
1210 s->nsector = (hi << 8) | lo;
1211 }
1212 }
1213 }
1214
1215 static void ide_clear_hob(IDEBus *bus)
1216 {
1217 /* any write clears HOB high bit of device control register */
1218 bus->ifs[0].select &= ~(1 << 7);
1219 bus->ifs[1].select &= ~(1 << 7);
1220 }
1221
1222 /* IOport [W]rite [R]egisters */
1223 enum ATA_IOPORT_WR {
1224 ATA_IOPORT_WR_DATA = 0,
1225 ATA_IOPORT_WR_FEATURES = 1,
1226 ATA_IOPORT_WR_SECTOR_COUNT = 2,
1227 ATA_IOPORT_WR_SECTOR_NUMBER = 3,
1228 ATA_IOPORT_WR_CYLINDER_LOW = 4,
1229 ATA_IOPORT_WR_CYLINDER_HIGH = 5,
1230 ATA_IOPORT_WR_DEVICE_HEAD = 6,
1231 ATA_IOPORT_WR_COMMAND = 7,
1232 ATA_IOPORT_WR_NUM_REGISTERS,
1233 };
1234
1235 const char *ATA_IOPORT_WR_lookup[ATA_IOPORT_WR_NUM_REGISTERS] = {
1236 [ATA_IOPORT_WR_DATA] = "Data",
1237 [ATA_IOPORT_WR_FEATURES] = "Features",
1238 [ATA_IOPORT_WR_SECTOR_COUNT] = "Sector Count",
1239 [ATA_IOPORT_WR_SECTOR_NUMBER] = "Sector Number",
1240 [ATA_IOPORT_WR_CYLINDER_LOW] = "Cylinder Low",
1241 [ATA_IOPORT_WR_CYLINDER_HIGH] = "Cylinder High",
1242 [ATA_IOPORT_WR_DEVICE_HEAD] = "Device/Head",
1243 [ATA_IOPORT_WR_COMMAND] = "Command"
1244 };
1245
1246 void ide_ioport_write(void *opaque, uint32_t addr, uint32_t val)
1247 {
1248 IDEBus *bus = opaque;
1249 IDEState *s = idebus_active_if(bus);
1250 int reg_num = addr & 7;
1251
1252 trace_ide_ioport_write(addr, ATA_IOPORT_WR_lookup[reg_num], val, bus, s);
1253
1254 /* ignore writes to command block while busy with previous command */
1255 if (reg_num != 7 && (s->status & (BUSY_STAT|DRQ_STAT))) {
1256 return;
1257 }
1258
1259 switch (reg_num) {
1260 case 0:
1261 break;
1262 case ATA_IOPORT_WR_FEATURES:
1263 ide_clear_hob(bus);
1264 /* NOTE: data is written to the two drives */
1265 bus->ifs[0].hob_feature = bus->ifs[0].feature;
1266 bus->ifs[1].hob_feature = bus->ifs[1].feature;
1267 bus->ifs[0].feature = val;
1268 bus->ifs[1].feature = val;
1269 break;
1270 case ATA_IOPORT_WR_SECTOR_COUNT:
1271 ide_clear_hob(bus);
1272 bus->ifs[0].hob_nsector = bus->ifs[0].nsector;
1273 bus->ifs[1].hob_nsector = bus->ifs[1].nsector;
1274 bus->ifs[0].nsector = val;
1275 bus->ifs[1].nsector = val;
1276 break;
1277 case ATA_IOPORT_WR_SECTOR_NUMBER:
1278 ide_clear_hob(bus);
1279 bus->ifs[0].hob_sector = bus->ifs[0].sector;
1280 bus->ifs[1].hob_sector = bus->ifs[1].sector;
1281 bus->ifs[0].sector = val;
1282 bus->ifs[1].sector = val;
1283 break;
1284 case ATA_IOPORT_WR_CYLINDER_LOW:
1285 ide_clear_hob(bus);
1286 bus->ifs[0].hob_lcyl = bus->ifs[0].lcyl;
1287 bus->ifs[1].hob_lcyl = bus->ifs[1].lcyl;
1288 bus->ifs[0].lcyl = val;
1289 bus->ifs[1].lcyl = val;
1290 break;
1291 case ATA_IOPORT_WR_CYLINDER_HIGH:
1292 ide_clear_hob(bus);
1293 bus->ifs[0].hob_hcyl = bus->ifs[0].hcyl;
1294 bus->ifs[1].hob_hcyl = bus->ifs[1].hcyl;
1295 bus->ifs[0].hcyl = val;
1296 bus->ifs[1].hcyl = val;
1297 break;
1298 case ATA_IOPORT_WR_DEVICE_HEAD:
1299 /* FIXME: HOB readback uses bit 7 */
1300 bus->ifs[0].select = (val & ~0x10) | 0xa0;
1301 bus->ifs[1].select = (val | 0x10) | 0xa0;
1302 /* select drive */
1303 bus->unit = (val >> 4) & 1;
1304 break;
1305 default:
1306 case ATA_IOPORT_WR_COMMAND:
1307 /* command */
1308 ide_exec_cmd(bus, val);
1309 break;
1310 }
1311 }
1312
1313 static void ide_reset(IDEState *s)
1314 {
1315 trace_ide_reset(s);
1316
1317 if (s->pio_aiocb) {
1318 blk_aio_cancel(s->pio_aiocb);
1319 s->pio_aiocb = NULL;
1320 }
1321
1322 if (s->drive_kind == IDE_CFATA)
1323 s->mult_sectors = 0;
1324 else
1325 s->mult_sectors = MAX_MULT_SECTORS;
1326 /* ide regs */
1327 s->feature = 0;
1328 s->error = 0;
1329 s->nsector = 0;
1330 s->sector = 0;
1331 s->lcyl = 0;
1332 s->hcyl = 0;
1333
1334 /* lba48 */
1335 s->hob_feature = 0;
1336 s->hob_sector = 0;
1337 s->hob_nsector = 0;
1338 s->hob_lcyl = 0;
1339 s->hob_hcyl = 0;
1340
1341 s->select = 0xa0;
1342 s->status = READY_STAT | SEEK_STAT;
1343
1344 s->lba48 = 0;
1345
1346 /* ATAPI specific */
1347 s->sense_key = 0;
1348 s->asc = 0;
1349 s->cdrom_changed = 0;
1350 s->packet_transfer_size = 0;
1351 s->elementary_transfer_size = 0;
1352 s->io_buffer_index = 0;
1353 s->cd_sector_size = 0;
1354 s->atapi_dma = 0;
1355 s->tray_locked = 0;
1356 s->tray_open = 0;
1357 /* ATA DMA state */
1358 s->io_buffer_size = 0;
1359 s->req_nb_sectors = 0;
1360
1361 ide_set_signature(s);
1362 /* init the transfer handler so that 0xffff is returned on data
1363 accesses */
1364 s->end_transfer_func = ide_dummy_transfer_stop;
1365 ide_dummy_transfer_stop(s);
1366 s->media_changed = 0;
1367 }
1368
1369 static bool cmd_nop(IDEState *s, uint8_t cmd)
1370 {
1371 return true;
1372 }
1373
1374 static bool cmd_device_reset(IDEState *s, uint8_t cmd)
1375 {
1376 /* Halt PIO (in the DRQ phase), then DMA */
1377 ide_transfer_halt(s);
1378 ide_cancel_dma_sync(s);
1379
1380 /* Reset any PIO commands, reset signature, etc */
1381 ide_reset(s);
1382
1383 /* RESET: ATA8-ACS3 7.10.4 "Normal Outputs";
1384 * ATA8-ACS3 Table 184 "Device Signatures for Normal Output" */
1385 s->status = 0x00;
1386
1387 /* Do not overwrite status register */
1388 return false;
1389 }
1390
1391 static bool cmd_data_set_management(IDEState *s, uint8_t cmd)
1392 {
1393 switch (s->feature) {
1394 case DSM_TRIM:
1395 if (s->blk) {
1396 ide_sector_start_dma(s, IDE_DMA_TRIM);
1397 return false;
1398 }
1399 break;
1400 }
1401
1402 ide_abort_command(s);
1403 return true;
1404 }
1405
1406 static bool cmd_identify(IDEState *s, uint8_t cmd)
1407 {
1408 if (s->blk && s->drive_kind != IDE_CD) {
1409 if (s->drive_kind != IDE_CFATA) {
1410 ide_identify(s);
1411 } else {
1412 ide_cfata_identify(s);
1413 }
1414 s->status = READY_STAT | SEEK_STAT;
1415 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1416 ide_set_irq(s->bus);
1417 return false;
1418 } else {
1419 if (s->drive_kind == IDE_CD) {
1420 ide_set_signature(s);
1421 }
1422 ide_abort_command(s);
1423 }
1424
1425 return true;
1426 }
1427
1428 static bool cmd_verify(IDEState *s, uint8_t cmd)
1429 {
1430 bool lba48 = (cmd == WIN_VERIFY_EXT);
1431
1432 /* do sector number check ? */
1433 ide_cmd_lba48_transform(s, lba48);
1434
1435 return true;
1436 }
1437
1438 static bool cmd_set_multiple_mode(IDEState *s, uint8_t cmd)
1439 {
1440 if (s->drive_kind == IDE_CFATA && s->nsector == 0) {
1441 /* Disable Read and Write Multiple */
1442 s->mult_sectors = 0;
1443 } else if ((s->nsector & 0xff) != 0 &&
1444 ((s->nsector & 0xff) > MAX_MULT_SECTORS ||
1445 (s->nsector & (s->nsector - 1)) != 0)) {
1446 ide_abort_command(s);
1447 } else {
1448 s->mult_sectors = s->nsector & 0xff;
1449 }
1450
1451 return true;
1452 }
1453
1454 static bool cmd_read_multiple(IDEState *s, uint8_t cmd)
1455 {
1456 bool lba48 = (cmd == WIN_MULTREAD_EXT);
1457
1458 if (!s->blk || !s->mult_sectors) {
1459 ide_abort_command(s);
1460 return true;
1461 }
1462
1463 ide_cmd_lba48_transform(s, lba48);
1464 s->req_nb_sectors = s->mult_sectors;
1465 ide_sector_read(s);
1466 return false;
1467 }
1468
1469 static bool cmd_write_multiple(IDEState *s, uint8_t cmd)
1470 {
1471 bool lba48 = (cmd == WIN_MULTWRITE_EXT);
1472 int n;
1473
1474 if (!s->blk || !s->mult_sectors) {
1475 ide_abort_command(s);
1476 return true;
1477 }
1478
1479 ide_cmd_lba48_transform(s, lba48);
1480
1481 s->req_nb_sectors = s->mult_sectors;
1482 n = MIN(s->nsector, s->req_nb_sectors);
1483
1484 s->status = SEEK_STAT | READY_STAT;
1485 ide_transfer_start(s, s->io_buffer, 512 * n, ide_sector_write);
1486
1487 s->media_changed = 1;
1488
1489 return false;
1490 }
1491
1492 static bool cmd_read_pio(IDEState *s, uint8_t cmd)
1493 {
1494 bool lba48 = (cmd == WIN_READ_EXT);
1495
1496 if (s->drive_kind == IDE_CD) {
1497 ide_set_signature(s); /* odd, but ATA4 8.27.5.2 requires it */
1498 ide_abort_command(s);
1499 return true;
1500 }
1501
1502 if (!s->blk) {
1503 ide_abort_command(s);
1504 return true;
1505 }
1506
1507 ide_cmd_lba48_transform(s, lba48);
1508 s->req_nb_sectors = 1;
1509 ide_sector_read(s);
1510
1511 return false;
1512 }
1513
1514 static bool cmd_write_pio(IDEState *s, uint8_t cmd)
1515 {
1516 bool lba48 = (cmd == WIN_WRITE_EXT);
1517
1518 if (!s->blk) {
1519 ide_abort_command(s);
1520 return true;
1521 }
1522
1523 ide_cmd_lba48_transform(s, lba48);
1524
1525 s->req_nb_sectors = 1;
1526 s->status = SEEK_STAT | READY_STAT;
1527 ide_transfer_start(s, s->io_buffer, 512, ide_sector_write);
1528
1529 s->media_changed = 1;
1530
1531 return false;
1532 }
1533
1534 static bool cmd_read_dma(IDEState *s, uint8_t cmd)
1535 {
1536 bool lba48 = (cmd == WIN_READDMA_EXT);
1537
1538 if (!s->blk) {
1539 ide_abort_command(s);
1540 return true;
1541 }
1542
1543 ide_cmd_lba48_transform(s, lba48);
1544 ide_sector_start_dma(s, IDE_DMA_READ);
1545
1546 return false;
1547 }
1548
1549 static bool cmd_write_dma(IDEState *s, uint8_t cmd)
1550 {
1551 bool lba48 = (cmd == WIN_WRITEDMA_EXT);
1552
1553 if (!s->blk) {
1554 ide_abort_command(s);
1555 return true;
1556 }
1557
1558 ide_cmd_lba48_transform(s, lba48);
1559 ide_sector_start_dma(s, IDE_DMA_WRITE);
1560
1561 s->media_changed = 1;
1562
1563 return false;
1564 }
1565
1566 static bool cmd_flush_cache(IDEState *s, uint8_t cmd)
1567 {
1568 ide_flush_cache(s);
1569 return false;
1570 }
1571
1572 static bool cmd_seek(IDEState *s, uint8_t cmd)
1573 {
1574 /* XXX: Check that seek is within bounds */
1575 return true;
1576 }
1577
1578 static bool cmd_read_native_max(IDEState *s, uint8_t cmd)
1579 {
1580 bool lba48 = (cmd == WIN_READ_NATIVE_MAX_EXT);
1581
1582 /* Refuse if no sectors are addressable (e.g. medium not inserted) */
1583 if (s->nb_sectors == 0) {
1584 ide_abort_command(s);
1585 return true;
1586 }
1587
1588 ide_cmd_lba48_transform(s, lba48);
1589 ide_set_sector(s, s->nb_sectors - 1);
1590
1591 return true;
1592 }
1593
1594 static bool cmd_check_power_mode(IDEState *s, uint8_t cmd)
1595 {
1596 s->nsector = 0xff; /* device active or idle */
1597 return true;
1598 }
1599
1600 static bool cmd_set_features(IDEState *s, uint8_t cmd)
1601 {
1602 uint16_t *identify_data;
1603
1604 if (!s->blk) {
1605 ide_abort_command(s);
1606 return true;
1607 }
1608
1609 /* XXX: valid for CDROM ? */
1610 switch (s->feature) {
1611 case 0x02: /* write cache enable */
1612 blk_set_enable_write_cache(s->blk, true);
1613 identify_data = (uint16_t *)s->identify_data;
1614 put_le16(identify_data + 85, (1 << 14) | (1 << 5) | 1);
1615 return true;
1616 case 0x82: /* write cache disable */
1617 blk_set_enable_write_cache(s->blk, false);
1618 identify_data = (uint16_t *)s->identify_data;
1619 put_le16(identify_data + 85, (1 << 14) | 1);
1620 ide_flush_cache(s);
1621 return false;
1622 case 0xcc: /* reverting to power-on defaults enable */
1623 case 0x66: /* reverting to power-on defaults disable */
1624 case 0xaa: /* read look-ahead enable */
1625 case 0x55: /* read look-ahead disable */
1626 case 0x05: /* set advanced power management mode */
1627 case 0x85: /* disable advanced power management mode */
1628 case 0x69: /* NOP */
1629 case 0x67: /* NOP */
1630 case 0x96: /* NOP */
1631 case 0x9a: /* NOP */
1632 case 0x42: /* enable Automatic Acoustic Mode */
1633 case 0xc2: /* disable Automatic Acoustic Mode */
1634 return true;
1635 case 0x03: /* set transfer mode */
1636 {
1637 uint8_t val = s->nsector & 0x07;
1638 identify_data = (uint16_t *)s->identify_data;
1639
1640 switch (s->nsector >> 3) {
1641 case 0x00: /* pio default */
1642 case 0x01: /* pio mode */
1643 put_le16(identify_data + 62, 0x07);
1644 put_le16(identify_data + 63, 0x07);
1645 put_le16(identify_data + 88, 0x3f);
1646 break;
1647 case 0x02: /* sigle word dma mode*/
1648 put_le16(identify_data + 62, 0x07 | (1 << (val + 8)));
1649 put_le16(identify_data + 63, 0x07);
1650 put_le16(identify_data + 88, 0x3f);
1651 break;
1652 case 0x04: /* mdma mode */
1653 put_le16(identify_data + 62, 0x07);
1654 put_le16(identify_data + 63, 0x07 | (1 << (val + 8)));
1655 put_le16(identify_data + 88, 0x3f);
1656 break;
1657 case 0x08: /* udma mode */
1658 put_le16(identify_data + 62, 0x07);
1659 put_le16(identify_data + 63, 0x07);
1660 put_le16(identify_data + 88, 0x3f | (1 << (val + 8)));
1661 break;
1662 default:
1663 goto abort_cmd;
1664 }
1665 return true;
1666 }
1667 }
1668
1669 abort_cmd:
1670 ide_abort_command(s);
1671 return true;
1672 }
1673
1674
1675 /*** ATAPI commands ***/
1676
1677 static bool cmd_identify_packet(IDEState *s, uint8_t cmd)
1678 {
1679 ide_atapi_identify(s);
1680 s->status = READY_STAT | SEEK_STAT;
1681 ide_transfer_start(s, s->io_buffer, 512, ide_transfer_stop);
1682 ide_set_irq(s->bus);
1683 return false;
1684 }
1685
1686 static bool cmd_exec_dev_diagnostic(IDEState *s, uint8_t cmd)
1687 {
1688 ide_set_signature(s);
1689
1690 if (s->drive_kind == IDE_CD) {
1691 s->status = 0; /* ATAPI spec (v6) section 9.10 defines packet
1692 * devices to return a clear status register
1693 * with READY_STAT *not* set. */
1694 s->error = 0x01;
1695 } else {
1696 s->status = READY_STAT | SEEK_STAT;
1697 /* The bits of the error register are not as usual for this command!
1698 * They are part of the regular output (this is why ERR_STAT isn't set)
1699 * Device 0 passed, Device 1 passed or not present. */
1700 s->error = 0x01;
1701 ide_set_irq(s->bus);
1702 }
1703
1704 return false;
1705 }
1706
1707 static bool cmd_packet(IDEState *s, uint8_t cmd)
1708 {
1709 /* overlapping commands not supported */
1710 if (s->feature & 0x02) {
1711 ide_abort_command(s);
1712 return true;
1713 }
1714
1715 s->status = READY_STAT | SEEK_STAT;
1716 s->atapi_dma = s->feature & 1;
1717 if (s->atapi_dma) {
1718 s->dma_cmd = IDE_DMA_ATAPI;
1719 }
1720 s->nsector = 1;
1721 ide_transfer_start(s, s->io_buffer, ATAPI_PACKET_SIZE,
1722 ide_atapi_cmd);
1723 return false;
1724 }
1725
1726
1727 /*** CF-ATA commands ***/
1728
1729 static bool cmd_cfa_req_ext_error_code(IDEState *s, uint8_t cmd)
1730 {
1731 s->error = 0x09; /* miscellaneous error */
1732 s->status = READY_STAT | SEEK_STAT;
1733 ide_set_irq(s->bus);
1734
1735 return false;
1736 }
1737
1738 static bool cmd_cfa_erase_sectors(IDEState *s, uint8_t cmd)
1739 {
1740 /* WIN_SECURITY_FREEZE_LOCK has the same ID as CFA_WEAR_LEVEL and is
1741 * required for Windows 8 to work with AHCI */
1742
1743 if (cmd == CFA_WEAR_LEVEL) {
1744 s->nsector = 0;
1745 }
1746
1747 if (cmd == CFA_ERASE_SECTORS) {
1748 s->media_changed = 1;
1749 }
1750
1751 return true;
1752 }
1753
1754 static bool cmd_cfa_translate_sector(IDEState *s, uint8_t cmd)
1755 {
1756 s->status = READY_STAT | SEEK_STAT;
1757
1758 memset(s->io_buffer, 0, 0x200);
1759 s->io_buffer[0x00] = s->hcyl; /* Cyl MSB */
1760 s->io_buffer[0x01] = s->lcyl; /* Cyl LSB */
1761 s->io_buffer[0x02] = s->select; /* Head */
1762 s->io_buffer[0x03] = s->sector; /* Sector */
1763 s->io_buffer[0x04] = ide_get_sector(s) >> 16; /* LBA MSB */
1764 s->io_buffer[0x05] = ide_get_sector(s) >> 8; /* LBA */
1765 s->io_buffer[0x06] = ide_get_sector(s) >> 0; /* LBA LSB */
1766 s->io_buffer[0x13] = 0x00; /* Erase flag */
1767 s->io_buffer[0x18] = 0x00; /* Hot count */
1768 s->io_buffer[0x19] = 0x00; /* Hot count */
1769 s->io_buffer[0x1a] = 0x01; /* Hot count */
1770
1771 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1772 ide_set_irq(s->bus);
1773
1774 return false;
1775 }
1776
1777 static bool cmd_cfa_access_metadata_storage(IDEState *s, uint8_t cmd)
1778 {
1779 switch (s->feature) {
1780 case 0x02: /* Inquiry Metadata Storage */
1781 ide_cfata_metadata_inquiry(s);
1782 break;
1783 case 0x03: /* Read Metadata Storage */
1784 ide_cfata_metadata_read(s);
1785 break;
1786 case 0x04: /* Write Metadata Storage */
1787 ide_cfata_metadata_write(s);
1788 break;
1789 default:
1790 ide_abort_command(s);
1791 return true;
1792 }
1793
1794 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1795 s->status = 0x00; /* NOTE: READY is _not_ set */
1796 ide_set_irq(s->bus);
1797
1798 return false;
1799 }
1800
1801 static bool cmd_ibm_sense_condition(IDEState *s, uint8_t cmd)
1802 {
1803 switch (s->feature) {
1804 case 0x01: /* sense temperature in device */
1805 s->nsector = 0x50; /* +20 C */
1806 break;
1807 default:
1808 ide_abort_command(s);
1809 return true;
1810 }
1811
1812 return true;
1813 }
1814
1815
1816 /*** SMART commands ***/
1817
1818 static bool cmd_smart(IDEState *s, uint8_t cmd)
1819 {
1820 int n;
1821
1822 if (s->hcyl != 0xc2 || s->lcyl != 0x4f) {
1823 goto abort_cmd;
1824 }
1825
1826 if (!s->smart_enabled && s->feature != SMART_ENABLE) {
1827 goto abort_cmd;
1828 }
1829
1830 switch (s->feature) {
1831 case SMART_DISABLE:
1832 s->smart_enabled = 0;
1833 return true;
1834
1835 case SMART_ENABLE:
1836 s->smart_enabled = 1;
1837 return true;
1838
1839 case SMART_ATTR_AUTOSAVE:
1840 switch (s->sector) {
1841 case 0x00:
1842 s->smart_autosave = 0;
1843 break;
1844 case 0xf1:
1845 s->smart_autosave = 1;
1846 break;
1847 default:
1848 goto abort_cmd;
1849 }
1850 return true;
1851
1852 case SMART_STATUS:
1853 if (!s->smart_errors) {
1854 s->hcyl = 0xc2;
1855 s->lcyl = 0x4f;
1856 } else {
1857 s->hcyl = 0x2c;
1858 s->lcyl = 0xf4;
1859 }
1860 return true;
1861
1862 case SMART_READ_THRESH:
1863 memset(s->io_buffer, 0, 0x200);
1864 s->io_buffer[0] = 0x01; /* smart struct version */
1865
1866 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1867 s->io_buffer[2 + 0 + (n * 12)] = smart_attributes[n][0];
1868 s->io_buffer[2 + 1 + (n * 12)] = smart_attributes[n][11];
1869 }
1870
1871 /* checksum */
1872 for (n = 0; n < 511; n++) {
1873 s->io_buffer[511] += s->io_buffer[n];
1874 }
1875 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1876
1877 s->status = READY_STAT | SEEK_STAT;
1878 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1879 ide_set_irq(s->bus);
1880 return false;
1881
1882 case SMART_READ_DATA:
1883 memset(s->io_buffer, 0, 0x200);
1884 s->io_buffer[0] = 0x01; /* smart struct version */
1885
1886 for (n = 0; n < ARRAY_SIZE(smart_attributes); n++) {
1887 int i;
1888 for (i = 0; i < 11; i++) {
1889 s->io_buffer[2 + i + (n * 12)] = smart_attributes[n][i];
1890 }
1891 }
1892
1893 s->io_buffer[362] = 0x02 | (s->smart_autosave ? 0x80 : 0x00);
1894 if (s->smart_selftest_count == 0) {
1895 s->io_buffer[363] = 0;
1896 } else {
1897 s->io_buffer[363] =
1898 s->smart_selftest_data[3 +
1899 (s->smart_selftest_count - 1) *
1900 24];
1901 }
1902 s->io_buffer[364] = 0x20;
1903 s->io_buffer[365] = 0x01;
1904 /* offline data collection capacity: execute + self-test*/
1905 s->io_buffer[367] = (1 << 4 | 1 << 3 | 1);
1906 s->io_buffer[368] = 0x03; /* smart capability (1) */
1907 s->io_buffer[369] = 0x00; /* smart capability (2) */
1908 s->io_buffer[370] = 0x01; /* error logging supported */
1909 s->io_buffer[372] = 0x02; /* minutes for poll short test */
1910 s->io_buffer[373] = 0x36; /* minutes for poll ext test */
1911 s->io_buffer[374] = 0x01; /* minutes for poll conveyance */
1912
1913 for (n = 0; n < 511; n++) {
1914 s->io_buffer[511] += s->io_buffer[n];
1915 }
1916 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1917
1918 s->status = READY_STAT | SEEK_STAT;
1919 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1920 ide_set_irq(s->bus);
1921 return false;
1922
1923 case SMART_READ_LOG:
1924 switch (s->sector) {
1925 case 0x01: /* summary smart error log */
1926 memset(s->io_buffer, 0, 0x200);
1927 s->io_buffer[0] = 0x01;
1928 s->io_buffer[1] = 0x00; /* no error entries */
1929 s->io_buffer[452] = s->smart_errors & 0xff;
1930 s->io_buffer[453] = (s->smart_errors & 0xff00) >> 8;
1931
1932 for (n = 0; n < 511; n++) {
1933 s->io_buffer[511] += s->io_buffer[n];
1934 }
1935 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1936 break;
1937 case 0x06: /* smart self test log */
1938 memset(s->io_buffer, 0, 0x200);
1939 s->io_buffer[0] = 0x01;
1940 if (s->smart_selftest_count == 0) {
1941 s->io_buffer[508] = 0;
1942 } else {
1943 s->io_buffer[508] = s->smart_selftest_count;
1944 for (n = 2; n < 506; n++) {
1945 s->io_buffer[n] = s->smart_selftest_data[n];
1946 }
1947 }
1948
1949 for (n = 0; n < 511; n++) {
1950 s->io_buffer[511] += s->io_buffer[n];
1951 }
1952 s->io_buffer[511] = 0x100 - s->io_buffer[511];
1953 break;
1954 default:
1955 goto abort_cmd;
1956 }
1957 s->status = READY_STAT | SEEK_STAT;
1958 ide_transfer_start(s, s->io_buffer, 0x200, ide_transfer_stop);
1959 ide_set_irq(s->bus);
1960 return false;
1961
1962 case SMART_EXECUTE_OFFLINE:
1963 switch (s->sector) {
1964 case 0: /* off-line routine */
1965 case 1: /* short self test */
1966 case 2: /* extended self test */
1967 s->smart_selftest_count++;
1968 if (s->smart_selftest_count > 21) {
1969 s->smart_selftest_count = 1;
1970 }
1971 n = 2 + (s->smart_selftest_count - 1) * 24;
1972 s->smart_selftest_data[n] = s->sector;
1973 s->smart_selftest_data[n + 1] = 0x00; /* OK and finished */
1974 s->smart_selftest_data[n + 2] = 0x34; /* hour count lsb */
1975 s->smart_selftest_data[n + 3] = 0x12; /* hour count msb */
1976 break;
1977 default:
1978 goto abort_cmd;
1979 }
1980 return true;
1981 }
1982
1983 abort_cmd:
1984 ide_abort_command(s);
1985 return true;
1986 }
1987
1988 #define HD_OK (1u << IDE_HD)
1989 #define CD_OK (1u << IDE_CD)
1990 #define CFA_OK (1u << IDE_CFATA)
1991 #define HD_CFA_OK (HD_OK | CFA_OK)
1992 #define ALL_OK (HD_OK | CD_OK | CFA_OK)
1993
1994 /* Set the Disk Seek Completed status bit during completion */
1995 #define SET_DSC (1u << 8)
1996
1997 /* See ACS-2 T13/2015-D Table B.2 Command codes */
1998 static const struct {
1999 /* Returns true if the completion code should be run */
2000 bool (*handler)(IDEState *s, uint8_t cmd);
2001 int flags;
2002 } ide_cmd_table[0x100] = {
2003 /* NOP not implemented, mandatory for CD */
2004 [CFA_REQ_EXT_ERROR_CODE] = { cmd_cfa_req_ext_error_code, CFA_OK },
2005 [WIN_DSM] = { cmd_data_set_management, HD_CFA_OK },
2006 [WIN_DEVICE_RESET] = { cmd_device_reset, CD_OK },
2007 [WIN_RECAL] = { cmd_nop, HD_CFA_OK | SET_DSC},
2008 [WIN_READ] = { cmd_read_pio, ALL_OK },
2009 [WIN_READ_ONCE] = { cmd_read_pio, HD_CFA_OK },
2010 [WIN_READ_EXT] = { cmd_read_pio, HD_CFA_OK },
2011 [WIN_READDMA_EXT] = { cmd_read_dma, HD_CFA_OK },
2012 [WIN_READ_NATIVE_MAX_EXT] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
2013 [WIN_MULTREAD_EXT] = { cmd_read_multiple, HD_CFA_OK },
2014 [WIN_WRITE] = { cmd_write_pio, HD_CFA_OK },
2015 [WIN_WRITE_ONCE] = { cmd_write_pio, HD_CFA_OK },
2016 [WIN_WRITE_EXT] = { cmd_write_pio, HD_CFA_OK },
2017 [WIN_WRITEDMA_EXT] = { cmd_write_dma, HD_CFA_OK },
2018 [CFA_WRITE_SECT_WO_ERASE] = { cmd_write_pio, CFA_OK },
2019 [WIN_MULTWRITE_EXT] = { cmd_write_multiple, HD_CFA_OK },
2020 [WIN_WRITE_VERIFY] = { cmd_write_pio, HD_CFA_OK },
2021 [WIN_VERIFY] = { cmd_verify, HD_CFA_OK | SET_DSC },
2022 [WIN_VERIFY_ONCE] = { cmd_verify, HD_CFA_OK | SET_DSC },
2023 [WIN_VERIFY_EXT] = { cmd_verify, HD_CFA_OK | SET_DSC },
2024 [WIN_SEEK] = { cmd_seek, HD_CFA_OK | SET_DSC },
2025 [CFA_TRANSLATE_SECTOR] = { cmd_cfa_translate_sector, CFA_OK },
2026 [WIN_DIAGNOSE] = { cmd_exec_dev_diagnostic, ALL_OK },
2027 [WIN_SPECIFY] = { cmd_nop, HD_CFA_OK | SET_DSC },
2028 [WIN_STANDBYNOW2] = { cmd_nop, HD_CFA_OK },
2029 [WIN_IDLEIMMEDIATE2] = { cmd_nop, HD_CFA_OK },
2030 [WIN_STANDBY2] = { cmd_nop, HD_CFA_OK },
2031 [WIN_SETIDLE2] = { cmd_nop, HD_CFA_OK },
2032 [WIN_CHECKPOWERMODE2] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2033 [WIN_SLEEPNOW2] = { cmd_nop, HD_CFA_OK },
2034 [WIN_PACKETCMD] = { cmd_packet, CD_OK },
2035 [WIN_PIDENTIFY] = { cmd_identify_packet, CD_OK },
2036 [WIN_SMART] = { cmd_smart, HD_CFA_OK | SET_DSC },
2037 [CFA_ACCESS_METADATA_STORAGE] = { cmd_cfa_access_metadata_storage, CFA_OK },
2038 [CFA_ERASE_SECTORS] = { cmd_cfa_erase_sectors, CFA_OK | SET_DSC },
2039 [WIN_MULTREAD] = { cmd_read_multiple, HD_CFA_OK },
2040 [WIN_MULTWRITE] = { cmd_write_multiple, HD_CFA_OK },
2041 [WIN_SETMULT] = { cmd_set_multiple_mode, HD_CFA_OK | SET_DSC },
2042 [WIN_READDMA] = { cmd_read_dma, HD_CFA_OK },
2043 [WIN_READDMA_ONCE] = { cmd_read_dma, HD_CFA_OK },
2044 [WIN_WRITEDMA] = { cmd_write_dma, HD_CFA_OK },
2045 [WIN_WRITEDMA_ONCE] = { cmd_write_dma, HD_CFA_OK },
2046 [CFA_WRITE_MULTI_WO_ERASE] = { cmd_write_multiple, CFA_OK },
2047 [WIN_STANDBYNOW1] = { cmd_nop, HD_CFA_OK },
2048 [WIN_IDLEIMMEDIATE] = { cmd_nop, HD_CFA_OK },
2049 [WIN_STANDBY] = { cmd_nop, HD_CFA_OK },
2050 [WIN_SETIDLE1] = { cmd_nop, HD_CFA_OK },
2051 [WIN_CHECKPOWERMODE1] = { cmd_check_power_mode, HD_CFA_OK | SET_DSC },
2052 [WIN_SLEEPNOW1] = { cmd_nop, HD_CFA_OK },
2053 [WIN_FLUSH_CACHE] = { cmd_flush_cache, ALL_OK },
2054 [WIN_FLUSH_CACHE_EXT] = { cmd_flush_cache, HD_CFA_OK },
2055 [WIN_IDENTIFY] = { cmd_identify, ALL_OK },
2056 [WIN_SETFEATURES] = { cmd_set_features, ALL_OK | SET_DSC },
2057 [IBM_SENSE_CONDITION] = { cmd_ibm_sense_condition, CFA_OK | SET_DSC },
2058 [CFA_WEAR_LEVEL] = { cmd_cfa_erase_sectors, HD_CFA_OK | SET_DSC },
2059 [WIN_READ_NATIVE_MAX] = { cmd_read_native_max, HD_CFA_OK | SET_DSC },
2060 };
2061
2062 static bool ide_cmd_permitted(IDEState *s, uint32_t cmd)
2063 {
2064 return cmd < ARRAY_SIZE(ide_cmd_table)
2065 && (ide_cmd_table[cmd].flags & (1u << s->drive_kind));
2066 }
2067
2068 void ide_exec_cmd(IDEBus *bus, uint32_t val)
2069 {
2070 IDEState *s;
2071 bool complete;
2072
2073 s = idebus_active_if(bus);
2074 trace_ide_exec_cmd(bus, s, val);
2075
2076 /* ignore commands to non existent slave */
2077 if (s != bus->ifs && !s->blk) {
2078 return;
2079 }
2080
2081 /* Only RESET is allowed while BSY and/or DRQ are set,
2082 * and only to ATAPI devices. */
2083 if (s->status & (BUSY_STAT|DRQ_STAT)) {
2084 if (val != WIN_DEVICE_RESET || s->drive_kind != IDE_CD) {
2085 return;
2086 }
2087 }
2088
2089 if (!ide_cmd_permitted(s, val)) {
2090 ide_abort_command(s);
2091 ide_set_irq(s->bus);
2092 return;
2093 }
2094
2095 s->status = READY_STAT | BUSY_STAT;
2096 s->error = 0;
2097 s->io_buffer_offset = 0;
2098
2099 complete = ide_cmd_table[val].handler(s, val);
2100 if (complete) {
2101 s->status &= ~BUSY_STAT;
2102 assert(!!s->error == !!(s->status & ERR_STAT));
2103
2104 if ((ide_cmd_table[val].flags & SET_DSC) && !s->error) {
2105 s->status |= SEEK_STAT;
2106 }
2107
2108 ide_cmd_done(s);
2109 ide_set_irq(s->bus);
2110 }
2111 }
2112
2113 /* IOport [R]ead [R]egisters */
2114 enum ATA_IOPORT_RR {
2115 ATA_IOPORT_RR_DATA = 0,
2116 ATA_IOPORT_RR_ERROR = 1,
2117 ATA_IOPORT_RR_SECTOR_COUNT = 2,
2118 ATA_IOPORT_RR_SECTOR_NUMBER = 3,
2119 ATA_IOPORT_RR_CYLINDER_LOW = 4,
2120 ATA_IOPORT_RR_CYLINDER_HIGH = 5,
2121 ATA_IOPORT_RR_DEVICE_HEAD = 6,
2122 ATA_IOPORT_RR_STATUS = 7,
2123 ATA_IOPORT_RR_NUM_REGISTERS,
2124 };
2125
2126 const char *ATA_IOPORT_RR_lookup[ATA_IOPORT_RR_NUM_REGISTERS] = {
2127 [ATA_IOPORT_RR_DATA] = "Data",
2128 [ATA_IOPORT_RR_ERROR] = "Error",
2129 [ATA_IOPORT_RR_SECTOR_COUNT] = "Sector Count",
2130 [ATA_IOPORT_RR_SECTOR_NUMBER] = "Sector Number",
2131 [ATA_IOPORT_RR_CYLINDER_LOW] = "Cylinder Low",
2132 [ATA_IOPORT_RR_CYLINDER_HIGH] = "Cylinder High",
2133 [ATA_IOPORT_RR_DEVICE_HEAD] = "Device/Head",
2134 [ATA_IOPORT_RR_STATUS] = "Status"
2135 };
2136
2137 uint32_t ide_ioport_read(void *opaque, uint32_t addr)
2138 {
2139 IDEBus *bus = opaque;
2140 IDEState *s = idebus_active_if(bus);
2141 uint32_t reg_num;
2142 int ret, hob;
2143
2144 reg_num = addr & 7;
2145 /* FIXME: HOB readback uses bit 7, but it's always set right now */
2146 //hob = s->select & (1 << 7);
2147 hob = 0;
2148 switch (reg_num) {
2149 case ATA_IOPORT_RR_DATA:
2150 ret = 0xff;
2151 break;
2152 case ATA_IOPORT_RR_ERROR:
2153 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2154 (s != bus->ifs && !s->blk)) {
2155 ret = 0;
2156 } else if (!hob) {
2157 ret = s->error;
2158 } else {
2159 ret = s->hob_feature;
2160 }
2161 break;
2162 case ATA_IOPORT_RR_SECTOR_COUNT:
2163 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2164 ret = 0;
2165 } else if (!hob) {
2166 ret = s->nsector & 0xff;
2167 } else {
2168 ret = s->hob_nsector;
2169 }
2170 break;
2171 case ATA_IOPORT_RR_SECTOR_NUMBER:
2172 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2173 ret = 0;
2174 } else if (!hob) {
2175 ret = s->sector;
2176 } else {
2177 ret = s->hob_sector;
2178 }
2179 break;
2180 case ATA_IOPORT_RR_CYLINDER_LOW:
2181 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2182 ret = 0;
2183 } else if (!hob) {
2184 ret = s->lcyl;
2185 } else {
2186 ret = s->hob_lcyl;
2187 }
2188 break;
2189 case ATA_IOPORT_RR_CYLINDER_HIGH:
2190 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2191 ret = 0;
2192 } else if (!hob) {
2193 ret = s->hcyl;
2194 } else {
2195 ret = s->hob_hcyl;
2196 }
2197 break;
2198 case ATA_IOPORT_RR_DEVICE_HEAD:
2199 if (!bus->ifs[0].blk && !bus->ifs[1].blk) {
2200 ret = 0;
2201 } else {
2202 ret = s->select;
2203 }
2204 break;
2205 default:
2206 case ATA_IOPORT_RR_STATUS:
2207 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2208 (s != bus->ifs && !s->blk)) {
2209 ret = 0;
2210 } else {
2211 ret = s->status;
2212 }
2213 qemu_irq_lower(bus->irq);
2214 break;
2215 }
2216
2217 trace_ide_ioport_read(addr, ATA_IOPORT_RR_lookup[reg_num], ret, bus, s);
2218 return ret;
2219 }
2220
2221 uint32_t ide_status_read(void *opaque, uint32_t addr)
2222 {
2223 IDEBus *bus = opaque;
2224 IDEState *s = idebus_active_if(bus);
2225 int ret;
2226
2227 if ((!bus->ifs[0].blk && !bus->ifs[1].blk) ||
2228 (s != bus->ifs && !s->blk)) {
2229 ret = 0;
2230 } else {
2231 ret = s->status;
2232 }
2233
2234 trace_ide_status_read(addr, ret, bus, s);
2235 return ret;
2236 }
2237
2238 void ide_cmd_write(void *opaque, uint32_t addr, uint32_t val)
2239 {
2240 IDEBus *bus = opaque;
2241 IDEState *s;
2242 int i;
2243
2244 trace_ide_cmd_write(addr, val, bus);
2245
2246 /* common for both drives */
2247 if (!(bus->cmd & IDE_CMD_RESET) &&
2248 (val & IDE_CMD_RESET)) {
2249 /* reset low to high */
2250 for(i = 0;i < 2; i++) {
2251 s = &bus->ifs[i];
2252 s->status = BUSY_STAT | SEEK_STAT;
2253 s->error = 0x01;
2254 }
2255 } else if ((bus->cmd & IDE_CMD_RESET) &&
2256 !(val & IDE_CMD_RESET)) {
2257 /* high to low */
2258 for(i = 0;i < 2; i++) {
2259 s = &bus->ifs[i];
2260 if (s->drive_kind == IDE_CD)
2261 s->status = 0x00; /* NOTE: READY is _not_ set */
2262 else
2263 s->status = READY_STAT | SEEK_STAT;
2264 ide_set_signature(s);
2265 }
2266 }
2267
2268 bus->cmd = val;
2269 }
2270
2271 /*
2272 * Returns true if the running PIO transfer is a PIO out (i.e. data is
2273 * transferred from the device to the guest), false if it's a PIO in
2274 */
2275 static bool ide_is_pio_out(IDEState *s)
2276 {
2277 if (s->end_transfer_func == ide_sector_write ||
2278 s->end_transfer_func == ide_atapi_cmd) {
2279 return false;
2280 } else if (s->end_transfer_func == ide_sector_read ||
2281 s->end_transfer_func == ide_transfer_stop ||
2282 s->end_transfer_func == ide_atapi_cmd_reply_end ||
2283 s->end_transfer_func == ide_dummy_transfer_stop) {
2284 return true;
2285 }
2286
2287 abort();
2288 }
2289
2290 void ide_data_writew(void *opaque, uint32_t addr, uint32_t val)
2291 {
2292 IDEBus *bus = opaque;
2293 IDEState *s = idebus_active_if(bus);
2294 uint8_t *p;
2295
2296 trace_ide_data_writew(addr, val, bus, s);
2297
2298 /* PIO data access allowed only when DRQ bit is set. The result of a write
2299 * during PIO out is indeterminate, just ignore it. */
2300 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2301 return;
2302 }
2303
2304 p = s->data_ptr;
2305 if (p + 2 > s->data_end) {
2306 return;
2307 }
2308
2309 *(uint16_t *)p = le16_to_cpu(val);
2310 p += 2;
2311 s->data_ptr = p;
2312 if (p >= s->data_end) {
2313 s->status &= ~DRQ_STAT;
2314 s->end_transfer_func(s);
2315 }
2316 }
2317
2318 uint32_t ide_data_readw(void *opaque, uint32_t addr)
2319 {
2320 IDEBus *bus = opaque;
2321 IDEState *s = idebus_active_if(bus);
2322 uint8_t *p;
2323 int ret;
2324
2325 /* PIO data access allowed only when DRQ bit is set. The result of a read
2326 * during PIO in is indeterminate, return 0 and don't move forward. */
2327 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2328 return 0;
2329 }
2330
2331 p = s->data_ptr;
2332 if (p + 2 > s->data_end) {
2333 return 0;
2334 }
2335
2336 ret = cpu_to_le16(*(uint16_t *)p);
2337 p += 2;
2338 s->data_ptr = p;
2339 if (p >= s->data_end) {
2340 s->status &= ~DRQ_STAT;
2341 s->end_transfer_func(s);
2342 }
2343
2344 trace_ide_data_readw(addr, ret, bus, s);
2345 return ret;
2346 }
2347
2348 void ide_data_writel(void *opaque, uint32_t addr, uint32_t val)
2349 {
2350 IDEBus *bus = opaque;
2351 IDEState *s = idebus_active_if(bus);
2352 uint8_t *p;
2353
2354 trace_ide_data_writel(addr, val, bus, s);
2355
2356 /* PIO data access allowed only when DRQ bit is set. The result of a write
2357 * during PIO out is indeterminate, just ignore it. */
2358 if (!(s->status & DRQ_STAT) || ide_is_pio_out(s)) {
2359 return;
2360 }
2361
2362 p = s->data_ptr;
2363 if (p + 4 > s->data_end) {
2364 return;
2365 }
2366
2367 *(uint32_t *)p = le32_to_cpu(val);
2368 p += 4;
2369 s->data_ptr = p;
2370 if (p >= s->data_end) {
2371 s->status &= ~DRQ_STAT;
2372 s->end_transfer_func(s);
2373 }
2374 }
2375
2376 uint32_t ide_data_readl(void *opaque, uint32_t addr)
2377 {
2378 IDEBus *bus = opaque;
2379 IDEState *s = idebus_active_if(bus);
2380 uint8_t *p;
2381 int ret;
2382
2383 /* PIO data access allowed only when DRQ bit is set. The result of a read
2384 * during PIO in is indeterminate, return 0 and don't move forward. */
2385 if (!(s->status & DRQ_STAT) || !ide_is_pio_out(s)) {
2386 ret = 0;
2387 goto out;
2388 }
2389
2390 p = s->data_ptr;
2391 if (p + 4 > s->data_end) {
2392 return 0;
2393 }
2394
2395 ret = cpu_to_le32(*(uint32_t *)p);
2396 p += 4;
2397 s->data_ptr = p;
2398 if (p >= s->data_end) {
2399 s->status &= ~DRQ_STAT;
2400 s->end_transfer_func(s);
2401 }
2402
2403 out:
2404 trace_ide_data_readl(addr, ret, bus, s);
2405 return ret;
2406 }
2407
2408 static void ide_dummy_transfer_stop(IDEState *s)
2409 {
2410 s->data_ptr = s->io_buffer;
2411 s->data_end = s->io_buffer;
2412 s->io_buffer[0] = 0xff;
2413 s->io_buffer[1] = 0xff;
2414 s->io_buffer[2] = 0xff;
2415 s->io_buffer[3] = 0xff;
2416 }
2417
2418 void ide_bus_reset(IDEBus *bus)
2419 {
2420 bus->unit = 0;
2421 bus->cmd = 0;
2422 ide_reset(&bus->ifs[0]);
2423 ide_reset(&bus->ifs[1]);
2424 ide_clear_hob(bus);
2425
2426 /* pending async DMA */
2427 if (bus->dma->aiocb) {
2428 trace_ide_bus_reset_aio();
2429 blk_aio_cancel(bus->dma->aiocb);
2430 bus->dma->aiocb = NULL;
2431 }
2432
2433 /* reset dma provider too */
2434 if (bus->dma->ops->reset) {
2435 bus->dma->ops->reset(bus->dma);
2436 }
2437 }
2438
2439 static bool ide_cd_is_tray_open(void *opaque)
2440 {
2441 return ((IDEState *)opaque)->tray_open;
2442 }
2443
2444 static bool ide_cd_is_medium_locked(void *opaque)
2445 {
2446 return ((IDEState *)opaque)->tray_locked;
2447 }
2448
2449 static void ide_resize_cb(void *opaque)
2450 {
2451 IDEState *s = opaque;
2452 uint64_t nb_sectors;
2453
2454 if (!s->identify_set) {
2455 return;
2456 }
2457
2458 blk_get_geometry(s->blk, &nb_sectors);
2459 s->nb_sectors = nb_sectors;
2460
2461 /* Update the identify data buffer. */
2462 if (s->drive_kind == IDE_CFATA) {
2463 ide_cfata_identify_size(s);
2464 } else {
2465 /* IDE_CD uses a different set of callbacks entirely. */
2466 assert(s->drive_kind != IDE_CD);
2467 ide_identify_size(s);
2468 }
2469 }
2470
2471 static const BlockDevOps ide_cd_block_ops = {
2472 .change_media_cb = ide_cd_change_cb,
2473 .eject_request_cb = ide_cd_eject_request_cb,
2474 .is_tray_open = ide_cd_is_tray_open,
2475 .is_medium_locked = ide_cd_is_medium_locked,
2476 };
2477
2478 static const BlockDevOps ide_hd_block_ops = {
2479 .resize_cb = ide_resize_cb,
2480 };
2481
2482 int ide_init_drive(IDEState *s, BlockBackend *blk, IDEDriveKind kind,
2483 const char *version, const char *serial, const char *model,
2484 uint64_t wwn,
2485 uint32_t cylinders, uint32_t heads, uint32_t secs,
2486 int chs_trans, Error **errp)
2487 {
2488 uint64_t nb_sectors;
2489
2490 s->blk = blk;
2491 s->drive_kind = kind;
2492
2493 blk_get_geometry(blk, &nb_sectors);
2494 s->cylinders = cylinders;
2495 s->heads = heads;
2496 s->sectors = secs;
2497 s->chs_trans = chs_trans;
2498 s->nb_sectors = nb_sectors;
2499 s->wwn = wwn;
2500 /* The SMART values should be preserved across power cycles
2501 but they aren't. */
2502 s->smart_enabled = 1;
2503 s->smart_autosave = 1;
2504 s->smart_errors = 0;
2505 s->smart_selftest_count = 0;
2506 if (kind == IDE_CD) {
2507 blk_set_dev_ops(blk, &ide_cd_block_ops, s);
2508 blk_set_guest_block_size(blk, 2048);
2509 } else {
2510 if (!blk_is_inserted(s->blk)) {
2511 error_setg(errp, "Device needs media, but drive is empty");
2512 return -1;
2513 }
2514 if (blk_is_read_only(blk)) {
2515 error_setg(errp, "Can't use a read-only drive");
2516 return -1;
2517 }
2518 blk_set_dev_ops(blk, &ide_hd_block_ops, s);
2519 }
2520 if (serial) {
2521 pstrcpy(s->drive_serial_str, sizeof(s->drive_serial_str), serial);
2522 } else {
2523 snprintf(s->drive_serial_str, sizeof(s->drive_serial_str),
2524 "QM%05d", s->drive_serial);
2525 }
2526 if (model) {
2527 pstrcpy(s->drive_model_str, sizeof(s->drive_model_str), model);
2528 } else {
2529 switch (kind) {
2530 case IDE_CD:
2531 strcpy(s->drive_model_str, "QEMU DVD-ROM");
2532 break;
2533 case IDE_CFATA:
2534 strcpy(s->drive_model_str, "QEMU MICRODRIVE");
2535 break;
2536 default:
2537 strcpy(s->drive_model_str, "QEMU HARDDISK");
2538 break;
2539 }
2540 }
2541
2542 if (version) {
2543 pstrcpy(s->version, sizeof(s->version), version);
2544 } else {
2545 pstrcpy(s->version, sizeof(s->version), qemu_hw_version());
2546 }
2547
2548 ide_reset(s);
2549 blk_iostatus_enable(blk);
2550 return 0;
2551 }
2552
2553 static void ide_init1(IDEBus *bus, int unit)
2554 {
2555 static int drive_serial = 1;
2556 IDEState *s = &bus->ifs[unit];
2557
2558 s->bus = bus;
2559 s->unit = unit;
2560 s->drive_serial = drive_serial++;
2561 /* we need at least 2k alignment for accessing CDROMs using O_DIRECT */
2562 s->io_buffer_total_len = IDE_DMA_BUF_SECTORS*512 + 4;
2563 s->io_buffer = qemu_memalign(2048, s->io_buffer_total_len);
2564 memset(s->io_buffer, 0, s->io_buffer_total_len);
2565
2566 s->smart_selftest_data = blk_blockalign(s->blk, 512);
2567 memset(s->smart_selftest_data, 0, 512);
2568
2569 s->sector_write_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
2570 ide_sector_write_timer_cb, s);
2571 }
2572
2573 static int ide_nop_int(IDEDMA *dma, bool is_write)
2574 {
2575 return 0;
2576 }
2577
2578 static void ide_nop(IDEDMA *dma)
2579 {
2580 }
2581
2582 static int32_t ide_nop_int32(IDEDMA *dma, int32_t l)
2583 {
2584 return 0;
2585 }
2586
2587 static const IDEDMAOps ide_dma_nop_ops = {
2588 .prepare_buf = ide_nop_int32,
2589 .restart_dma = ide_nop,
2590 .rw_buf = ide_nop_int,
2591 };
2592
2593 static void ide_restart_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
2594 {
2595 s->unit = s->bus->retry_unit;
2596 ide_set_sector(s, s->bus->retry_sector_num);
2597 s->nsector = s->bus->retry_nsector;
2598 s->bus->dma->ops->restart_dma(s->bus->dma);
2599 s->io_buffer_size = 0;
2600 s->dma_cmd = dma_cmd;
2601 ide_start_dma(s, ide_dma_cb);
2602 }
2603
2604 static void ide_restart_bh(void *opaque)
2605 {
2606 IDEBus *bus = opaque;
2607 IDEState *s;
2608 bool is_read;
2609 int error_status;
2610
2611 qemu_bh_delete(bus->bh);
2612 bus->bh = NULL;
2613
2614 error_status = bus->error_status;
2615 if (bus->error_status == 0) {
2616 return;
2617 }
2618
2619 s = idebus_active_if(bus);
2620 is_read = (bus->error_status & IDE_RETRY_READ) != 0;
2621
2622 /* The error status must be cleared before resubmitting the request: The
2623 * request may fail again, and this case can only be distinguished if the
2624 * called function can set a new error status. */
2625 bus->error_status = 0;
2626
2627 /* The HBA has generically asked to be kicked on retry */
2628 if (error_status & IDE_RETRY_HBA) {
2629 if (s->bus->dma->ops->restart) {
2630 s->bus->dma->ops->restart(s->bus->dma);
2631 }
2632 } else if (IS_IDE_RETRY_DMA(error_status)) {
2633 if (error_status & IDE_RETRY_TRIM) {
2634 ide_restart_dma(s, IDE_DMA_TRIM);
2635 } else {
2636 ide_restart_dma(s, is_read ? IDE_DMA_READ : IDE_DMA_WRITE);
2637 }
2638 } else if (IS_IDE_RETRY_PIO(error_status)) {
2639 if (is_read) {
2640 ide_sector_read(s);
2641 } else {
2642 ide_sector_write(s);
2643 }
2644 } else if (error_status & IDE_RETRY_FLUSH) {
2645 ide_flush_cache(s);
2646 } else if (IS_IDE_RETRY_ATAPI(error_status)) {
2647 assert(s->end_transfer_func == ide_atapi_cmd);
2648 ide_atapi_dma_restart(s);
2649 } else {
2650 abort();
2651 }
2652 }
2653
2654 static void ide_restart_cb(void *opaque, int running, RunState state)
2655 {
2656 IDEBus *bus = opaque;
2657
2658 if (!running)
2659 return;
2660
2661 if (!bus->bh) {
2662 bus->bh = qemu_bh_new(ide_restart_bh, bus);
2663 qemu_bh_schedule(bus->bh);
2664 }
2665 }
2666
2667 void ide_register_restart_cb(IDEBus *bus)
2668 {
2669 if (bus->dma->ops->restart_dma) {
2670 bus->vmstate = qemu_add_vm_change_state_handler(ide_restart_cb, bus);
2671 }
2672 }
2673
2674 static IDEDMA ide_dma_nop = {
2675 .ops = &ide_dma_nop_ops,
2676 .aiocb = NULL,
2677 };
2678
2679 void ide_init2(IDEBus *bus, qemu_irq irq)
2680 {
2681 int i;
2682
2683 for(i = 0; i < 2; i++) {
2684 ide_init1(bus, i);
2685 ide_reset(&bus->ifs[i]);
2686 }
2687 bus->irq = irq;
2688 bus->dma = &ide_dma_nop;
2689 }
2690
2691 void ide_exit(IDEState *s)
2692 {
2693 timer_del(s->sector_write_timer);
2694 timer_free(s->sector_write_timer);
2695 qemu_vfree(s->smart_selftest_data);
2696 qemu_vfree(s->io_buffer);
2697 }
2698
2699 static bool is_identify_set(void *opaque, int version_id)
2700 {
2701 IDEState *s = opaque;
2702
2703 return s->identify_set != 0;
2704 }
2705
2706 static EndTransferFunc* transfer_end_table[] = {
2707 ide_sector_read,
2708 ide_sector_write,
2709 ide_transfer_stop,
2710 ide_atapi_cmd_reply_end,
2711 ide_atapi_cmd,
2712 ide_dummy_transfer_stop,
2713 };
2714
2715 static int transfer_end_table_idx(EndTransferFunc *fn)
2716 {
2717 int i;
2718
2719 for (i = 0; i < ARRAY_SIZE(transfer_end_table); i++)
2720 if (transfer_end_table[i] == fn)
2721 return i;
2722
2723 return -1;
2724 }
2725
2726 static int ide_drive_post_load(void *opaque, int version_id)
2727 {
2728 IDEState *s = opaque;
2729
2730 if (s->blk && s->identify_set) {
2731 blk_set_enable_write_cache(s->blk, !!(s->identify_data[85] & (1 << 5)));
2732 }
2733 return 0;
2734 }
2735
2736 static int ide_drive_pio_post_load(void *opaque, int version_id)
2737 {
2738 IDEState *s = opaque;
2739
2740 if (s->end_transfer_fn_idx >= ARRAY_SIZE(transfer_end_table)) {
2741 return -EINVAL;
2742 }
2743 s->end_transfer_func = transfer_end_table[s->end_transfer_fn_idx];
2744 s->data_ptr = s->io_buffer + s->cur_io_buffer_offset;
2745 s->data_end = s->data_ptr + s->cur_io_buffer_len;
2746 s->atapi_dma = s->feature & 1; /* as per cmd_packet */
2747
2748 return 0;
2749 }
2750
2751 static int ide_drive_pio_pre_save(void *opaque)
2752 {
2753 IDEState *s = opaque;
2754 int idx;
2755
2756 s->cur_io_buffer_offset = s->data_ptr - s->io_buffer;
2757 s->cur_io_buffer_len = s->data_end - s->data_ptr;
2758
2759 idx = transfer_end_table_idx(s->end_transfer_func);
2760 if (idx == -1) {
2761 fprintf(stderr, "%s: invalid end_transfer_func for DRQ_STAT\n",
2762 __func__);
2763 s->end_transfer_fn_idx = 2;
2764 } else {
2765 s->end_transfer_fn_idx = idx;
2766 }
2767
2768 return 0;
2769 }
2770
2771 static bool ide_drive_pio_state_needed(void *opaque)
2772 {
2773 IDEState *s = opaque;
2774
2775 return ((s->status & DRQ_STAT) != 0)
2776 || (s->bus->error_status & IDE_RETRY_PIO);
2777 }
2778
2779 static bool ide_tray_state_needed(void *opaque)
2780 {
2781 IDEState *s = opaque;
2782
2783 return s->tray_open || s->tray_locked;
2784 }
2785
2786 static bool ide_atapi_gesn_needed(void *opaque)
2787 {
2788 IDEState *s = opaque;
2789
2790 return s->events.new_media || s->events.eject_request;
2791 }
2792
2793 static bool ide_error_needed(void *opaque)
2794 {
2795 IDEBus *bus = opaque;
2796
2797 return (bus->error_status != 0);
2798 }
2799
2800 /* Fields for GET_EVENT_STATUS_NOTIFICATION ATAPI command */
2801 static const VMStateDescription vmstate_ide_atapi_gesn_state = {
2802 .name ="ide_drive/atapi/gesn_state",
2803 .version_id = 1,
2804 .minimum_version_id = 1,
2805 .needed = ide_atapi_gesn_needed,
2806 .fields = (VMStateField[]) {
2807 VMSTATE_BOOL(events.new_media, IDEState),
2808 VMSTATE_BOOL(events.eject_request, IDEState),
2809 VMSTATE_END_OF_LIST()
2810 }
2811 };
2812
2813 static const VMStateDescription vmstate_ide_tray_state = {
2814 .name = "ide_drive/tray_state",
2815 .version_id = 1,
2816 .minimum_version_id = 1,
2817 .needed = ide_tray_state_needed,
2818 .fields = (VMStateField[]) {
2819 VMSTATE_BOOL(tray_open, IDEState),
2820 VMSTATE_BOOL(tray_locked, IDEState),
2821 VMSTATE_END_OF_LIST()
2822 }
2823 };
2824
2825 static const VMStateDescription vmstate_ide_drive_pio_state = {
2826 .name = "ide_drive/pio_state",
2827 .version_id = 1,
2828 .minimum_version_id = 1,
2829 .pre_save = ide_drive_pio_pre_save,
2830 .post_load = ide_drive_pio_post_load,
2831 .needed = ide_drive_pio_state_needed,
2832 .fields = (VMStateField[]) {
2833 VMSTATE_INT32(req_nb_sectors, IDEState),
2834 VMSTATE_VARRAY_INT32(io_buffer, IDEState, io_buffer_total_len, 1,
2835 vmstate_info_uint8, uint8_t),
2836 VMSTATE_INT32(cur_io_buffer_offset, IDEState),
2837 VMSTATE_INT32(cur_io_buffer_len, IDEState),
2838 VMSTATE_UINT8(end_transfer_fn_idx, IDEState),
2839 VMSTATE_INT32(elementary_transfer_size, IDEState),
2840 VMSTATE_INT32(packet_transfer_size, IDEState),
2841 VMSTATE_END_OF_LIST()
2842 }
2843 };
2844
2845 const VMStateDescription vmstate_ide_drive = {
2846 .name = "ide_drive",
2847 .version_id = 3,
2848 .minimum_version_id = 0,
2849 .post_load = ide_drive_post_load,
2850 .fields = (VMStateField[]) {
2851 VMSTATE_INT32(mult_sectors, IDEState),
2852 VMSTATE_INT32(identify_set, IDEState),
2853 VMSTATE_BUFFER_TEST(identify_data, IDEState, is_identify_set),
2854 VMSTATE_UINT8(feature, IDEState),
2855 VMSTATE_UINT8(error, IDEState),
2856 VMSTATE_UINT32(nsector, IDEState),
2857 VMSTATE_UINT8(sector, IDEState),
2858 VMSTATE_UINT8(lcyl, IDEState),
2859 VMSTATE_UINT8(hcyl, IDEState),
2860 VMSTATE_UINT8(hob_feature, IDEState),
2861 VMSTATE_UINT8(hob_sector, IDEState),
2862 VMSTATE_UINT8(hob_nsector, IDEState),
2863 VMSTATE_UINT8(hob_lcyl, IDEState),
2864 VMSTATE_UINT8(hob_hcyl, IDEState),
2865 VMSTATE_UINT8(select, IDEState),
2866 VMSTATE_UINT8(status, IDEState),
2867 VMSTATE_UINT8(lba48, IDEState),
2868 VMSTATE_UINT8(sense_key, IDEState),
2869 VMSTATE_UINT8(asc, IDEState),
2870 VMSTATE_UINT8_V(cdrom_changed, IDEState, 3),
2871 VMSTATE_END_OF_LIST()
2872 },
2873 .subsections = (const VMStateDescription*[]) {
2874 &vmstate_ide_drive_pio_state,
2875 &vmstate_ide_tray_state,
2876 &vmstate_ide_atapi_gesn_state,
2877 NULL
2878 }
2879 };
2880
2881 static const VMStateDescription vmstate_ide_error_status = {
2882 .name ="ide_bus/error",
2883 .version_id = 2,
2884 .minimum_version_id = 1,
2885 .needed = ide_error_needed,
2886 .fields = (VMStateField[]) {
2887 VMSTATE_INT32(error_status, IDEBus),
2888 VMSTATE_INT64_V(retry_sector_num, IDEBus, 2),
2889 VMSTATE_UINT32_V(retry_nsector, IDEBus, 2),
2890 VMSTATE_UINT8_V(retry_unit, IDEBus, 2),
2891 VMSTATE_END_OF_LIST()
2892 }
2893 };
2894
2895 const VMStateDescription vmstate_ide_bus = {
2896 .name = "ide_bus",
2897 .version_id = 1,
2898 .minimum_version_id = 1,
2899 .fields = (VMStateField[]) {
2900 VMSTATE_UINT8(cmd, IDEBus),
2901 VMSTATE_UINT8(unit, IDEBus),
2902 VMSTATE_END_OF_LIST()
2903 },
2904 .subsections = (const VMStateDescription*[]) {
2905 &vmstate_ide_error_status,
2906 NULL
2907 }
2908 };
2909
2910 void ide_drive_get(DriveInfo **hd, int n)
2911 {
2912 int i;
2913
2914 for (i = 0; i < n; i++) {
2915 hd[i] = drive_get_by_index(IF_IDE, i);
2916 }
2917 }
Eric Blake's pending patches to qemu