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68396ea @rmustacc Initial commit of d32e8d0b8d9e0ef7cf7ab2e74548982972789dfc from qemu-kvm
rmustacc authored
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include <stdint.h>
25 #include <stdarg.h>
26 #include <stdlib.h>
27 #ifndef _WIN32
28 #include <sys/types.h>
29 #include <sys/mman.h>
30 #endif
31 #include "config.h"
32 #include "monitor.h"
33 #include "sysemu.h"
34 #include "arch_init.h"
35 #include "audio/audio.h"
36 #include "hw/pc.h"
37 #include "hw/pci.h"
38 #include "hw/audiodev.h"
39 #include "kvm.h"
40 #include "migration.h"
41 #include "net.h"
42 #include "gdbstub.h"
43 #include "hw/smbios.h"
44
45 #ifdef TARGET_SPARC
46 int graphic_width = 1024;
47 int graphic_height = 768;
48 int graphic_depth = 8;
49 #else
50 int graphic_width = 800;
51 int graphic_height = 600;
52 int graphic_depth = 15;
53 #endif
54
55 const char arch_config_name[] = CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf";
56
57 #if defined(TARGET_ALPHA)
58 #define QEMU_ARCH QEMU_ARCH_ALPHA
59 #elif defined(TARGET_ARM)
60 #define QEMU_ARCH QEMU_ARCH_ARM
61 #elif defined(TARGET_CRIS)
62 #define QEMU_ARCH QEMU_ARCH_CRIS
63 #elif defined(TARGET_I386)
64 #define QEMU_ARCH QEMU_ARCH_I386
65 #elif defined(TARGET_M68K)
66 #define QEMU_ARCH QEMU_ARCH_M68K
67 #elif defined(TARGET_MICROBLAZE)
68 #define QEMU_ARCH QEMU_ARCH_MICROBLAZE
69 #elif defined(TARGET_MIPS)
70 #define QEMU_ARCH QEMU_ARCH_MIPS
71 #elif defined(TARGET_PPC)
72 #define QEMU_ARCH QEMU_ARCH_PPC
73 #elif defined(TARGET_S390X)
74 #define QEMU_ARCH QEMU_ARCH_S390X
75 #elif defined(TARGET_SH4)
76 #define QEMU_ARCH QEMU_ARCH_SH4
77 #elif defined(TARGET_SPARC)
78 #define QEMU_ARCH QEMU_ARCH_SPARC
79 #endif
80
81 const uint32_t arch_type = QEMU_ARCH;
82
83 /***********************************************************/
84 /* ram save/restore */
85
86 #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */
87 #define RAM_SAVE_FLAG_COMPRESS 0x02
88 #define RAM_SAVE_FLAG_MEM_SIZE 0x04
89 #define RAM_SAVE_FLAG_PAGE 0x08
90 #define RAM_SAVE_FLAG_EOS 0x10
91 #define RAM_SAVE_FLAG_CONTINUE 0x20
92
93 static int is_dup_page(uint8_t *page, uint8_t ch)
94 {
95 uint32_t val = ch << 24 | ch << 16 | ch << 8 | ch;
96 uint32_t *array = (uint32_t *)page;
97 int i;
98
99 for (i = 0; i < (TARGET_PAGE_SIZE / 4); i++) {
100 if (array[i] != val) {
101 return 0;
102 }
103 }
104
105 return 1;
106 }
107
108 static RAMBlock *last_block;
109 static ram_addr_t last_offset;
110
111 static int ram_save_block(QEMUFile *f)
112 {
113 RAMBlock *block = last_block;
114 ram_addr_t offset = last_offset;
115 ram_addr_t current_addr;
116 int bytes_sent = 0;
117
118 if (!block)
119 block = QLIST_FIRST(&ram_list.blocks);
120
121 current_addr = block->offset + offset;
122
123 do {
124 if (cpu_physical_memory_get_dirty(current_addr, MIGRATION_DIRTY_FLAG)) {
125 uint8_t *p;
126 int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
127
128 cpu_physical_memory_reset_dirty(current_addr,
129 current_addr + TARGET_PAGE_SIZE,
130 MIGRATION_DIRTY_FLAG);
131
132 p = block->host + offset;
133
134 if (is_dup_page(p, *p)) {
135 qemu_put_be64(f, offset | cont | RAM_SAVE_FLAG_COMPRESS);
136 if (!cont) {
137 qemu_put_byte(f, strlen(block->idstr));
138 qemu_put_buffer(f, (uint8_t *)block->idstr,
139 strlen(block->idstr));
140 }
141 qemu_put_byte(f, *p);
142 bytes_sent = 1;
143 } else {
144 qemu_put_be64(f, offset | cont | RAM_SAVE_FLAG_PAGE);
145 if (!cont) {
146 qemu_put_byte(f, strlen(block->idstr));
147 qemu_put_buffer(f, (uint8_t *)block->idstr,
148 strlen(block->idstr));
149 }
150 qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
151 bytes_sent = TARGET_PAGE_SIZE;
152 }
153
154 break;
155 }
156
157 offset += TARGET_PAGE_SIZE;
158 if (offset >= block->length) {
159 offset = 0;
160 block = QLIST_NEXT(block, next);
161 if (!block)
162 block = QLIST_FIRST(&ram_list.blocks);
163 }
164
165 current_addr = block->offset + offset;
166
167 } while (current_addr != last_block->offset + last_offset);
168
169 last_block = block;
170 last_offset = offset;
171
172 return bytes_sent;
173 }
174
175 static uint64_t bytes_transferred;
176
177 static ram_addr_t ram_save_remaining(void)
178 {
179 RAMBlock *block;
180 ram_addr_t count = 0;
181
182 QLIST_FOREACH(block, &ram_list.blocks, next) {
183 ram_addr_t addr;
184 for (addr = block->offset; addr < block->offset + block->length;
185 addr += TARGET_PAGE_SIZE) {
186 if (cpu_physical_memory_get_dirty(addr, MIGRATION_DIRTY_FLAG)) {
187 count++;
188 }
189 }
190 }
191
192 return count;
193 }
194
195 uint64_t ram_bytes_remaining(void)
196 {
197 return ram_save_remaining() * TARGET_PAGE_SIZE;
198 }
199
200 uint64_t ram_bytes_transferred(void)
201 {
202 return bytes_transferred;
203 }
204
205 uint64_t ram_bytes_total(void)
206 {
207 RAMBlock *block;
208 uint64_t total = 0;
209
210 QLIST_FOREACH(block, &ram_list.blocks, next)
211 total += block->length;
212
213 return total;
214 }
215
216 static int block_compar(const void *a, const void *b)
217 {
218 RAMBlock * const *ablock = a;
219 RAMBlock * const *bblock = b;
220 if ((*ablock)->offset < (*bblock)->offset) {
221 return -1;
222 } else if ((*ablock)->offset > (*bblock)->offset) {
223 return 1;
224 }
225 return 0;
226 }
227
228 static void sort_ram_list(void)
229 {
230 RAMBlock *block, *nblock, **blocks;
231 int n;
232 n = 0;
233 QLIST_FOREACH(block, &ram_list.blocks, next) {
234 ++n;
235 }
236 blocks = qemu_malloc(n * sizeof *blocks);
237 n = 0;
238 QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) {
239 blocks[n++] = block;
240 QLIST_REMOVE(block, next);
241 }
242 qsort(blocks, n, sizeof *blocks, block_compar);
243 while (--n >= 0) {
244 QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next);
245 }
246 qemu_free(blocks);
247 }
248
249 int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
250 {
251 ram_addr_t addr;
252 uint64_t bytes_transferred_last;
253 double bwidth = 0;
254 uint64_t expected_time = 0;
255
256 if (stage < 0) {
257 cpu_physical_memory_set_dirty_tracking(0);
258 return 0;
259 }
260
261 if (cpu_physical_sync_dirty_bitmap(0, TARGET_PHYS_ADDR_MAX) != 0) {
262 qemu_file_set_error(f);
263 return 0;
264 }
265
266 if (stage == 1) {
267 RAMBlock *block;
268 bytes_transferred = 0;
269 last_block = NULL;
270 last_offset = 0;
271 sort_ram_list();
272
273 /* Make sure all dirty bits are set */
274 QLIST_FOREACH(block, &ram_list.blocks, next) {
275 for (addr = block->offset; addr < block->offset + block->length;
276 addr += TARGET_PAGE_SIZE) {
277 if (!cpu_physical_memory_get_dirty(addr,
278 MIGRATION_DIRTY_FLAG)) {
279 cpu_physical_memory_set_dirty(addr);
280 }
281 }
282 }
283
284 /* Enable dirty memory tracking */
285 cpu_physical_memory_set_dirty_tracking(1);
286
287 qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE);
288
289 QLIST_FOREACH(block, &ram_list.blocks, next) {
290 qemu_put_byte(f, strlen(block->idstr));
291 qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr));
292 qemu_put_be64(f, block->length);
293 }
294 }
295
296 bytes_transferred_last = bytes_transferred;
297 bwidth = qemu_get_clock_ns(rt_clock);
298
299 while (!qemu_file_rate_limit(f)) {
300 int bytes_sent;
301
302 bytes_sent = ram_save_block(f);
303 bytes_transferred += bytes_sent;
304 if (bytes_sent == 0) { /* no more blocks */
305 break;
306 }
307 }
308
309 bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
310 bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
311
312 /* if we haven't transferred anything this round, force expected_time to a
313 * a very high value, but without crashing */
314 if (bwidth == 0) {
315 bwidth = 0.000001;
316 }
317
318 /* try transferring iterative blocks of memory */
319 if (stage == 3) {
320 int bytes_sent;
321
322 /* flush all remaining blocks regardless of rate limiting */
323 while ((bytes_sent = ram_save_block(f)) != 0) {
324 bytes_transferred += bytes_sent;
325 }
326 cpu_physical_memory_set_dirty_tracking(0);
327 }
328
329 qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
330
331 expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
332
333 return (stage == 2) && (expected_time <= migrate_max_downtime());
334 }
335
336 static inline void *host_from_stream_offset(QEMUFile *f,
337 ram_addr_t offset,
338 int flags)
339 {
340 static RAMBlock *block = NULL;
341 char id[256];
342 uint8_t len;
343
344 if (flags & RAM_SAVE_FLAG_CONTINUE) {
345 if (!block) {
346 fprintf(stderr, "Ack, bad migration stream!\n");
347 return NULL;
348 }
349
350 return block->host + offset;
351 }
352
353 len = qemu_get_byte(f);
354 qemu_get_buffer(f, (uint8_t *)id, len);
355 id[len] = 0;
356
357 QLIST_FOREACH(block, &ram_list.blocks, next) {
358 if (!strncmp(id, block->idstr, sizeof(id)))
359 return block->host + offset;
360 }
361
362 fprintf(stderr, "Can't find block %s!\n", id);
363 return NULL;
364 }
365
366 int ram_load(QEMUFile *f, void *opaque, int version_id)
367 {
368 ram_addr_t addr;
369 int flags;
370
371 if (version_id < 3 || version_id > 4) {
372 return -EINVAL;
373 }
374
375 do {
376 addr = qemu_get_be64(f);
377
378 flags = addr & ~TARGET_PAGE_MASK;
379 addr &= TARGET_PAGE_MASK;
380
381 if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
382 if (version_id == 3) {
383 if (addr != ram_bytes_total()) {
384 return -EINVAL;
385 }
386 } else {
387 /* Synchronize RAM block list */
388 char id[256];
389 ram_addr_t length;
390 ram_addr_t total_ram_bytes = addr;
391
392 while (total_ram_bytes) {
393 RAMBlock *block;
394 uint8_t len;
395
396 len = qemu_get_byte(f);
397 qemu_get_buffer(f, (uint8_t *)id, len);
398 id[len] = 0;
399 length = qemu_get_be64(f);
400
401 QLIST_FOREACH(block, &ram_list.blocks, next) {
402 if (!strncmp(id, block->idstr, sizeof(id))) {
403 if (block->length != length)
404 return -EINVAL;
405 break;
406 }
407 }
408
409 if (!block) {
410 fprintf(stderr, "Unknown ramblock \"%s\", cannot "
411 "accept migration\n", id);
412 return -EINVAL;
413 }
414
415 total_ram_bytes -= length;
416 }
417 }
418 }
419
420 if (flags & RAM_SAVE_FLAG_COMPRESS) {
421 void *host;
422 uint8_t ch;
423
424 if (version_id == 3)
425 host = qemu_get_ram_ptr(addr);
426 else
427 host = host_from_stream_offset(f, addr, flags);
428 if (!host) {
429 return -EINVAL;
430 }
431
432 ch = qemu_get_byte(f);
433 memset(host, ch, TARGET_PAGE_SIZE);
434 #ifndef _WIN32
435 if (ch == 0 &&
436 (!kvm_enabled() || kvm_has_sync_mmu())) {
437 qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
438 }
439 #endif
440 } else if (flags & RAM_SAVE_FLAG_PAGE) {
441 void *host;
442
443 if (version_id == 3)
444 host = qemu_get_ram_ptr(addr);
445 else
446 host = host_from_stream_offset(f, addr, flags);
447
448 qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
449 }
450 if (qemu_file_has_error(f)) {
451 return -EIO;
452 }
453 } while (!(flags & RAM_SAVE_FLAG_EOS));
454
455 return 0;
456 }
457
458 void qemu_service_io(void)
459 {
460 qemu_notify_event();
461 }
462
463 #ifdef HAS_AUDIO
464 struct soundhw {
465 const char *name;
466 const char *descr;
467 int enabled;
468 int isa;
469 union {
470 int (*init_isa) (qemu_irq *pic);
471 int (*init_pci) (PCIBus *bus);
472 } init;
473 };
474
475 static struct soundhw soundhw[] = {
476 #ifdef HAS_AUDIO_CHOICE
477 #if defined(TARGET_I386) || defined(TARGET_MIPS)
478 {
479 "pcspk",
480 "PC speaker",
481 0,
482 1,
483 { .init_isa = pcspk_audio_init }
484 },
485 #endif
486
487 #ifdef CONFIG_SB16
488 {
489 "sb16",
490 "Creative Sound Blaster 16",
491 0,
492 1,
493 { .init_isa = SB16_init }
494 },
495 #endif
496
497 #ifdef CONFIG_CS4231A
498 {
499 "cs4231a",
500 "CS4231A",
501 0,
502 1,
503 { .init_isa = cs4231a_init }
504 },
505 #endif
506
507 #ifdef CONFIG_ADLIB
508 {
509 "adlib",
510 #ifdef HAS_YMF262
511 "Yamaha YMF262 (OPL3)",
512 #else
513 "Yamaha YM3812 (OPL2)",
514 #endif
515 0,
516 1,
517 { .init_isa = Adlib_init }
518 },
519 #endif
520
521 #ifdef CONFIG_GUS
522 {
523 "gus",
524 "Gravis Ultrasound GF1",
525 0,
526 1,
527 { .init_isa = GUS_init }
528 },
529 #endif
530
531 #ifdef CONFIG_AC97
532 {
533 "ac97",
534 "Intel 82801AA AC97 Audio",
535 0,
536 0,
537 { .init_pci = ac97_init }
538 },
539 #endif
540
541 #ifdef CONFIG_ES1370
542 {
543 "es1370",
544 "ENSONIQ AudioPCI ES1370",
545 0,
546 0,
547 { .init_pci = es1370_init }
548 },
549 #endif
550
551 #ifdef CONFIG_HDA
552 {
553 "hda",
554 "Intel HD Audio",
555 0,
556 0,
557 { .init_pci = intel_hda_and_codec_init }
558 },
559 #endif
560
561 #endif /* HAS_AUDIO_CHOICE */
562
563 { NULL, NULL, 0, 0, { NULL } }
564 };
565
566 void select_soundhw(const char *optarg)
567 {
568 struct soundhw *c;
569
570 if (*optarg == '?') {
571 show_valid_cards:
572
573 printf("Valid sound card names (comma separated):\n");
574 for (c = soundhw; c->name; ++c) {
575 printf ("%-11s %s\n", c->name, c->descr);
576 }
577 printf("\n-soundhw all will enable all of the above\n");
578 exit(*optarg != '?');
579 }
580 else {
581 size_t l;
582 const char *p;
583 char *e;
584 int bad_card = 0;
585
586 if (!strcmp(optarg, "all")) {
587 for (c = soundhw; c->name; ++c) {
588 c->enabled = 1;
589 }
590 return;
591 }
592
593 p = optarg;
594 while (*p) {
595 e = strchr(p, ',');
596 l = !e ? strlen(p) : (size_t) (e - p);
597
598 for (c = soundhw; c->name; ++c) {
599 if (!strncmp(c->name, p, l) && !c->name[l]) {
600 c->enabled = 1;
601 break;
602 }
603 }
604
605 if (!c->name) {
606 if (l > 80) {
607 fprintf(stderr,
608 "Unknown sound card name (too big to show)\n");
609 }
610 else {
611 fprintf(stderr, "Unknown sound card name `%.*s'\n",
612 (int) l, p);
613 }
614 bad_card = 1;
615 }
616 p += l + (e != NULL);
617 }
618
619 if (bad_card) {
620 goto show_valid_cards;
621 }
622 }
623 }
624
625 void audio_init(qemu_irq *isa_pic, PCIBus *pci_bus)
626 {
627 struct soundhw *c;
628
629 for (c = soundhw; c->name; ++c) {
630 if (c->enabled) {
631 if (c->isa) {
632 if (isa_pic) {
633 c->init.init_isa(isa_pic);
634 }
635 } else {
636 if (pci_bus) {
637 c->init.init_pci(pci_bus);
638 }
639 }
640 }
641 }
642 }
643 #else
644 void select_soundhw(const char *optarg)
645 {
646 }
647 void audio_init(qemu_irq *isa_pic, PCIBus *pci_bus)
648 {
649 }
650 #endif
651
652 int qemu_uuid_parse(const char *str, uint8_t *uuid)
653 {
654 int ret;
655
656 if (strlen(str) != 36) {
657 return -1;
658 }
659
660 ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
661 &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
662 &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14],
663 &uuid[15]);
664
665 if (ret != 16) {
666 return -1;
667 }
668 #ifdef TARGET_I386
669 smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
670 #endif
671 return 0;
672 }
673
674 void do_acpitable_option(const char *optarg)
675 {
676 #ifdef TARGET_I386
677 if (acpi_table_add(optarg) < 0) {
678 fprintf(stderr, "Wrong acpi table provided\n");
679 exit(1);
680 }
681 #endif
682 }
683
684 void do_smbios_option(const char *optarg)
685 {
686 #ifdef TARGET_I386
687 if (smbios_entry_add(optarg) < 0) {
688 fprintf(stderr, "Wrong smbios provided\n");
689 exit(1);
690 }
691 #endif
692 }
693
694 void cpudef_init(void)
695 {
696 #if defined(cpudef_setup)
697 cpudef_setup(); /* parse cpu definitions in target config file */
698 #endif
699 }
700
701 int audio_available(void)
702 {
703 #ifdef HAS_AUDIO
704 return 1;
705 #else
706 return 0;
707 #endif
708 }
709
710 int kvm_available(void)
711 {
712 #ifdef CONFIG_KVM
713 return 1;
714 #else
715 return 0;
716 #endif
717 }
718
719 int xen_available(void)
720 {
721 #ifdef CONFIG_XEN
722 return 1;
723 #else
724 return 0;
725 #endif
726 }
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