vga: improve documentation
[qemu.git] / arch_init.c
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 #include "exec-memory.h"
45
46 #ifdef TARGET_SPARC
47 int graphic_width = 1024;
48 int graphic_height = 768;
49 int graphic_depth = 8;
50 #else
51 int graphic_width = 800;
52 int graphic_height = 600;
53 int graphic_depth = 15;
54 #endif
55
56 const char arch_config_name[] = CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf";
57
58 #if defined(TARGET_ALPHA)
59 #define QEMU_ARCH QEMU_ARCH_ALPHA
60 #elif defined(TARGET_ARM)
61 #define QEMU_ARCH QEMU_ARCH_ARM
62 #elif defined(TARGET_CRIS)
63 #define QEMU_ARCH QEMU_ARCH_CRIS
64 #elif defined(TARGET_I386)
65 #define QEMU_ARCH QEMU_ARCH_I386
66 #elif defined(TARGET_M68K)
67 #define QEMU_ARCH QEMU_ARCH_M68K
68 #elif defined(TARGET_LM32)
69 #define QEMU_ARCH QEMU_ARCH_LM32
70 #elif defined(TARGET_MICROBLAZE)
71 #define QEMU_ARCH QEMU_ARCH_MICROBLAZE
72 #elif defined(TARGET_MIPS)
73 #define QEMU_ARCH QEMU_ARCH_MIPS
74 #elif defined(TARGET_PPC)
75 #define QEMU_ARCH QEMU_ARCH_PPC
76 #elif defined(TARGET_S390X)
77 #define QEMU_ARCH QEMU_ARCH_S390X
78 #elif defined(TARGET_SH4)
79 #define QEMU_ARCH QEMU_ARCH_SH4
80 #elif defined(TARGET_SPARC)
81 #define QEMU_ARCH QEMU_ARCH_SPARC
82 #elif defined(TARGET_XTENSA)
83 #define QEMU_ARCH QEMU_ARCH_XTENSA
84 #endif
85
86 const uint32_t arch_type = QEMU_ARCH;
87
88 /***********************************************************/
89 /* ram save/restore */
90
91 #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */
92 #define RAM_SAVE_FLAG_COMPRESS 0x02
93 #define RAM_SAVE_FLAG_MEM_SIZE 0x04
94 #define RAM_SAVE_FLAG_PAGE 0x08
95 #define RAM_SAVE_FLAG_EOS 0x10
96 #define RAM_SAVE_FLAG_CONTINUE 0x20
97
98 #ifdef __ALTIVEC__
99 #include <altivec.h>
100 #define VECTYPE vector unsigned char
101 #define SPLAT(p) vec_splat(vec_ld(0, p), 0)
102 #define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
103 #elif defined __SSE2__
104 #include <emmintrin.h>
105 #define VECTYPE __m128i
106 #define SPLAT(p) _mm_set1_epi8(*(p))
107 #define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
108 #else
109 #define VECTYPE unsigned long
110 #define SPLAT(p) (*(p) * (~0UL / 255))
111 #define ALL_EQ(v1, v2) ((v1) == (v2))
112 #endif
113
114 static int is_dup_page(uint8_t *page)
115 {
116 VECTYPE *p = (VECTYPE *)page;
117 VECTYPE val = SPLAT(page);
118 int i;
119
120 for (i = 0; i < TARGET_PAGE_SIZE / sizeof(VECTYPE); i++) {
121 if (!ALL_EQ(val, p[i])) {
122 return 0;
123 }
124 }
125
126 return 1;
127 }
128
129 static RAMBlock *last_block;
130 static ram_addr_t last_offset;
131
132 static int ram_save_block(QEMUFile *f)
133 {
134 RAMBlock *block = last_block;
135 ram_addr_t offset = last_offset;
136 int bytes_sent = 0;
137 MemoryRegion *mr;
138
139 if (!block)
140 block = QLIST_FIRST(&ram_list.blocks);
141
142 do {
143 mr = block->mr;
144 if (memory_region_get_dirty(mr, offset, TARGET_PAGE_SIZE,
145 DIRTY_MEMORY_MIGRATION)) {
146 uint8_t *p;
147 int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
148
149 memory_region_reset_dirty(mr, offset, TARGET_PAGE_SIZE,
150 DIRTY_MEMORY_MIGRATION);
151
152 p = memory_region_get_ram_ptr(mr) + offset;
153
154 if (is_dup_page(p)) {
155 qemu_put_be64(f, offset | cont | RAM_SAVE_FLAG_COMPRESS);
156 if (!cont) {
157 qemu_put_byte(f, strlen(block->idstr));
158 qemu_put_buffer(f, (uint8_t *)block->idstr,
159 strlen(block->idstr));
160 }
161 qemu_put_byte(f, *p);
162 bytes_sent = 1;
163 } else {
164 qemu_put_be64(f, offset | cont | RAM_SAVE_FLAG_PAGE);
165 if (!cont) {
166 qemu_put_byte(f, strlen(block->idstr));
167 qemu_put_buffer(f, (uint8_t *)block->idstr,
168 strlen(block->idstr));
169 }
170 qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
171 bytes_sent = TARGET_PAGE_SIZE;
172 }
173
174 break;
175 }
176
177 offset += TARGET_PAGE_SIZE;
178 if (offset >= block->length) {
179 offset = 0;
180 block = QLIST_NEXT(block, next);
181 if (!block)
182 block = QLIST_FIRST(&ram_list.blocks);
183 }
184 } while (block != last_block || offset != last_offset);
185
186 last_block = block;
187 last_offset = offset;
188
189 return bytes_sent;
190 }
191
192 static uint64_t bytes_transferred;
193
194 static ram_addr_t ram_save_remaining(void)
195 {
196 RAMBlock *block;
197 ram_addr_t count = 0;
198
199 QLIST_FOREACH(block, &ram_list.blocks, next) {
200 ram_addr_t addr;
201 for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
202 if (memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
203 DIRTY_MEMORY_MIGRATION)) {
204 count++;
205 }
206 }
207 }
208
209 return count;
210 }
211
212 uint64_t ram_bytes_remaining(void)
213 {
214 return ram_save_remaining() * TARGET_PAGE_SIZE;
215 }
216
217 uint64_t ram_bytes_transferred(void)
218 {
219 return bytes_transferred;
220 }
221
222 uint64_t ram_bytes_total(void)
223 {
224 RAMBlock *block;
225 uint64_t total = 0;
226
227 QLIST_FOREACH(block, &ram_list.blocks, next)
228 total += block->length;
229
230 return total;
231 }
232
233 static int block_compar(const void *a, const void *b)
234 {
235 RAMBlock * const *ablock = a;
236 RAMBlock * const *bblock = b;
237
238 return strcmp((*ablock)->idstr, (*bblock)->idstr);
239 }
240
241 static void sort_ram_list(void)
242 {
243 RAMBlock *block, *nblock, **blocks;
244 int n;
245 n = 0;
246 QLIST_FOREACH(block, &ram_list.blocks, next) {
247 ++n;
248 }
249 blocks = g_malloc(n * sizeof *blocks);
250 n = 0;
251 QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) {
252 blocks[n++] = block;
253 QLIST_REMOVE(block, next);
254 }
255 qsort(blocks, n, sizeof *blocks, block_compar);
256 while (--n >= 0) {
257 QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next);
258 }
259 g_free(blocks);
260 }
261
262 int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
263 {
264 ram_addr_t addr;
265 uint64_t bytes_transferred_last;
266 double bwidth = 0;
267 uint64_t expected_time = 0;
268 int ret;
269
270 if (stage < 0) {
271 memory_global_dirty_log_stop();
272 return 0;
273 }
274
275 memory_global_sync_dirty_bitmap(get_system_memory());
276
277 if (stage == 1) {
278 RAMBlock *block;
279 bytes_transferred = 0;
280 last_block = NULL;
281 last_offset = 0;
282 sort_ram_list();
283
284 /* Make sure all dirty bits are set */
285 QLIST_FOREACH(block, &ram_list.blocks, next) {
286 for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
287 if (!memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
288 DIRTY_MEMORY_MIGRATION)) {
289 memory_region_set_dirty(block->mr, addr, TARGET_PAGE_SIZE);
290 }
291 }
292 }
293
294 memory_global_dirty_log_start();
295
296 qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE);
297
298 QLIST_FOREACH(block, &ram_list.blocks, next) {
299 qemu_put_byte(f, strlen(block->idstr));
300 qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr));
301 qemu_put_be64(f, block->length);
302 }
303 }
304
305 bytes_transferred_last = bytes_transferred;
306 bwidth = qemu_get_clock_ns(rt_clock);
307
308 while ((ret = qemu_file_rate_limit(f)) == 0) {
309 int bytes_sent;
310
311 bytes_sent = ram_save_block(f);
312 bytes_transferred += bytes_sent;
313 if (bytes_sent == 0) { /* no more blocks */
314 break;
315 }
316 }
317
318 if (ret < 0) {
319 return ret;
320 }
321
322 bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
323 bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
324
325 /* if we haven't transferred anything this round, force expected_time to a
326 * a very high value, but without crashing */
327 if (bwidth == 0) {
328 bwidth = 0.000001;
329 }
330
331 /* try transferring iterative blocks of memory */
332 if (stage == 3) {
333 int bytes_sent;
334
335 /* flush all remaining blocks regardless of rate limiting */
336 while ((bytes_sent = ram_save_block(f)) != 0) {
337 bytes_transferred += bytes_sent;
338 }
339 memory_global_dirty_log_stop();
340 }
341
342 qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
343
344 expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
345
346 return (stage == 2) && (expected_time <= migrate_max_downtime());
347 }
348
349 static inline void *host_from_stream_offset(QEMUFile *f,
350 ram_addr_t offset,
351 int flags)
352 {
353 static RAMBlock *block = NULL;
354 char id[256];
355 uint8_t len;
356
357 if (flags & RAM_SAVE_FLAG_CONTINUE) {
358 if (!block) {
359 fprintf(stderr, "Ack, bad migration stream!\n");
360 return NULL;
361 }
362
363 return memory_region_get_ram_ptr(block->mr) + offset;
364 }
365
366 len = qemu_get_byte(f);
367 qemu_get_buffer(f, (uint8_t *)id, len);
368 id[len] = 0;
369
370 QLIST_FOREACH(block, &ram_list.blocks, next) {
371 if (!strncmp(id, block->idstr, sizeof(id)))
372 return memory_region_get_ram_ptr(block->mr) + offset;
373 }
374
375 fprintf(stderr, "Can't find block %s!\n", id);
376 return NULL;
377 }
378
379 int ram_load(QEMUFile *f, void *opaque, int version_id)
380 {
381 ram_addr_t addr;
382 int flags;
383 int error;
384
385 if (version_id < 4 || version_id > 4) {
386 return -EINVAL;
387 }
388
389 do {
390 addr = qemu_get_be64(f);
391
392 flags = addr & ~TARGET_PAGE_MASK;
393 addr &= TARGET_PAGE_MASK;
394
395 if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
396 if (version_id == 4) {
397 /* Synchronize RAM block list */
398 char id[256];
399 ram_addr_t length;
400 ram_addr_t total_ram_bytes = addr;
401
402 while (total_ram_bytes) {
403 RAMBlock *block;
404 uint8_t len;
405
406 len = qemu_get_byte(f);
407 qemu_get_buffer(f, (uint8_t *)id, len);
408 id[len] = 0;
409 length = qemu_get_be64(f);
410
411 QLIST_FOREACH(block, &ram_list.blocks, next) {
412 if (!strncmp(id, block->idstr, sizeof(id))) {
413 if (block->length != length)
414 return -EINVAL;
415 break;
416 }
417 }
418
419 if (!block) {
420 fprintf(stderr, "Unknown ramblock \"%s\", cannot "
421 "accept migration\n", id);
422 return -EINVAL;
423 }
424
425 total_ram_bytes -= length;
426 }
427 }
428 }
429
430 if (flags & RAM_SAVE_FLAG_COMPRESS) {
431 void *host;
432 uint8_t ch;
433
434 host = host_from_stream_offset(f, addr, flags);
435 if (!host) {
436 return -EINVAL;
437 }
438
439 ch = qemu_get_byte(f);
440 memset(host, ch, TARGET_PAGE_SIZE);
441 #ifndef _WIN32
442 if (ch == 0 &&
443 (!kvm_enabled() || kvm_has_sync_mmu())) {
444 qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
445 }
446 #endif
447 } else if (flags & RAM_SAVE_FLAG_PAGE) {
448 void *host;
449
450 host = host_from_stream_offset(f, addr, flags);
451
452 qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
453 }
454 error = qemu_file_get_error(f);
455 if (error) {
456 return error;
457 }
458 } while (!(flags & RAM_SAVE_FLAG_EOS));
459
460 return 0;
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) (ISABus *bus);
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(ISABus *isa_bus, 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_bus) {
633 c->init.init_isa(isa_bus);
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(ISABus *isa_bus, 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 tcg_available(void)
711 {
712 return 1;
713 }
714
715 int kvm_available(void)
716 {
717 #ifdef CONFIG_KVM
718 return 1;
719 #else
720 return 0;
721 #endif
722 }
723
724 int xen_available(void)
725 {
726 #ifdef CONFIG_XEN
727 return 1;
728 #else
729 return 0;
730 #endif
731 }