loader: Fix read_targphys() to behave when read() fails
[qemu.git] / arch_init.c
bloba411fdf2637d6762de584319d2379692a01b95c6
1 /*
2 * QEMU System Emulator
4 * Copyright (c) 2003-2008 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
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"
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
55 const char arch_config_name[] = CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf";
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_LM32)
68 #define QEMU_ARCH QEMU_ARCH_LM32
69 #elif defined(TARGET_MICROBLAZE)
70 #define QEMU_ARCH QEMU_ARCH_MICROBLAZE
71 #elif defined(TARGET_MIPS)
72 #define QEMU_ARCH QEMU_ARCH_MIPS
73 #elif defined(TARGET_PPC)
74 #define QEMU_ARCH QEMU_ARCH_PPC
75 #elif defined(TARGET_S390X)
76 #define QEMU_ARCH QEMU_ARCH_S390X
77 #elif defined(TARGET_SH4)
78 #define QEMU_ARCH QEMU_ARCH_SH4
79 #elif defined(TARGET_SPARC)
80 #define QEMU_ARCH QEMU_ARCH_SPARC
81 #elif defined(TARGET_XTENSA)
82 #define QEMU_ARCH QEMU_ARCH_XTENSA
83 #endif
85 const uint32_t arch_type = QEMU_ARCH;
87 /***********************************************************/
88 /* ram save/restore */
90 #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */
91 #define RAM_SAVE_FLAG_COMPRESS 0x02
92 #define RAM_SAVE_FLAG_MEM_SIZE 0x04
93 #define RAM_SAVE_FLAG_PAGE 0x08
94 #define RAM_SAVE_FLAG_EOS 0x10
95 #define RAM_SAVE_FLAG_CONTINUE 0x20
97 static int is_dup_page(uint8_t *page, uint8_t ch)
99 uint32_t val = ch << 24 | ch << 16 | ch << 8 | ch;
100 uint32_t *array = (uint32_t *)page;
101 int i;
103 for (i = 0; i < (TARGET_PAGE_SIZE / 4); i++) {
104 if (array[i] != val) {
105 return 0;
109 return 1;
112 static RAMBlock *last_block;
113 static ram_addr_t last_offset;
115 static int ram_save_block(QEMUFile *f)
117 RAMBlock *block = last_block;
118 ram_addr_t offset = last_offset;
119 ram_addr_t current_addr;
120 int bytes_sent = 0;
122 if (!block)
123 block = QLIST_FIRST(&ram_list.blocks);
125 current_addr = block->offset + offset;
127 do {
128 if (cpu_physical_memory_get_dirty(current_addr, MIGRATION_DIRTY_FLAG)) {
129 uint8_t *p;
130 int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
132 cpu_physical_memory_reset_dirty(current_addr,
133 current_addr + TARGET_PAGE_SIZE,
134 MIGRATION_DIRTY_FLAG);
136 p = block->host + offset;
138 if (is_dup_page(p, *p)) {
139 qemu_put_be64(f, offset | cont | RAM_SAVE_FLAG_COMPRESS);
140 if (!cont) {
141 qemu_put_byte(f, strlen(block->idstr));
142 qemu_put_buffer(f, (uint8_t *)block->idstr,
143 strlen(block->idstr));
145 qemu_put_byte(f, *p);
146 bytes_sent = 1;
147 } else {
148 qemu_put_be64(f, offset | cont | RAM_SAVE_FLAG_PAGE);
149 if (!cont) {
150 qemu_put_byte(f, strlen(block->idstr));
151 qemu_put_buffer(f, (uint8_t *)block->idstr,
152 strlen(block->idstr));
154 qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
155 bytes_sent = TARGET_PAGE_SIZE;
158 break;
161 offset += TARGET_PAGE_SIZE;
162 if (offset >= block->length) {
163 offset = 0;
164 block = QLIST_NEXT(block, next);
165 if (!block)
166 block = QLIST_FIRST(&ram_list.blocks);
169 current_addr = block->offset + offset;
171 } while (current_addr != last_block->offset + last_offset);
173 last_block = block;
174 last_offset = offset;
176 return bytes_sent;
179 static uint64_t bytes_transferred;
181 static ram_addr_t ram_save_remaining(void)
183 RAMBlock *block;
184 ram_addr_t count = 0;
186 QLIST_FOREACH(block, &ram_list.blocks, next) {
187 ram_addr_t addr;
188 for (addr = block->offset; addr < block->offset + block->length;
189 addr += TARGET_PAGE_SIZE) {
190 if (cpu_physical_memory_get_dirty(addr, MIGRATION_DIRTY_FLAG)) {
191 count++;
196 return count;
199 uint64_t ram_bytes_remaining(void)
201 return ram_save_remaining() * TARGET_PAGE_SIZE;
204 uint64_t ram_bytes_transferred(void)
206 return bytes_transferred;
209 uint64_t ram_bytes_total(void)
211 RAMBlock *block;
212 uint64_t total = 0;
214 QLIST_FOREACH(block, &ram_list.blocks, next)
215 total += block->length;
217 return total;
220 static int block_compar(const void *a, const void *b)
222 RAMBlock * const *ablock = a;
223 RAMBlock * const *bblock = b;
224 if ((*ablock)->offset < (*bblock)->offset) {
225 return -1;
226 } else if ((*ablock)->offset > (*bblock)->offset) {
227 return 1;
229 return 0;
232 static void sort_ram_list(void)
234 RAMBlock *block, *nblock, **blocks;
235 int n;
236 n = 0;
237 QLIST_FOREACH(block, &ram_list.blocks, next) {
238 ++n;
240 blocks = g_malloc(n * sizeof *blocks);
241 n = 0;
242 QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) {
243 blocks[n++] = block;
244 QLIST_REMOVE(block, next);
246 qsort(blocks, n, sizeof *blocks, block_compar);
247 while (--n >= 0) {
248 QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next);
250 g_free(blocks);
253 int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
255 ram_addr_t addr;
256 uint64_t bytes_transferred_last;
257 double bwidth = 0;
258 uint64_t expected_time = 0;
259 int ret;
261 if (stage < 0) {
262 cpu_physical_memory_set_dirty_tracking(0);
263 return 0;
266 if (cpu_physical_sync_dirty_bitmap(0, TARGET_PHYS_ADDR_MAX) != 0) {
267 qemu_file_set_error(f, -EINVAL);
268 return -EINVAL;
271 if (stage == 1) {
272 RAMBlock *block;
273 bytes_transferred = 0;
274 last_block = NULL;
275 last_offset = 0;
276 sort_ram_list();
278 /* Make sure all dirty bits are set */
279 QLIST_FOREACH(block, &ram_list.blocks, next) {
280 for (addr = block->offset; addr < block->offset + block->length;
281 addr += TARGET_PAGE_SIZE) {
282 if (!cpu_physical_memory_get_dirty(addr,
283 MIGRATION_DIRTY_FLAG)) {
284 cpu_physical_memory_set_dirty(addr);
289 /* Enable dirty memory tracking */
290 cpu_physical_memory_set_dirty_tracking(1);
292 qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE);
294 QLIST_FOREACH(block, &ram_list.blocks, next) {
295 qemu_put_byte(f, strlen(block->idstr));
296 qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr));
297 qemu_put_be64(f, block->length);
301 bytes_transferred_last = bytes_transferred;
302 bwidth = qemu_get_clock_ns(rt_clock);
304 while ((ret = qemu_file_rate_limit(f)) == 0) {
305 int bytes_sent;
307 bytes_sent = ram_save_block(f);
308 bytes_transferred += bytes_sent;
309 if (bytes_sent == 0) { /* no more blocks */
310 break;
314 if (ret < 0) {
315 return ret;
318 bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
319 bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
321 /* if we haven't transferred anything this round, force expected_time to a
322 * a very high value, but without crashing */
323 if (bwidth == 0) {
324 bwidth = 0.000001;
327 /* try transferring iterative blocks of memory */
328 if (stage == 3) {
329 int bytes_sent;
331 /* flush all remaining blocks regardless of rate limiting */
332 while ((bytes_sent = ram_save_block(f)) != 0) {
333 bytes_transferred += bytes_sent;
335 cpu_physical_memory_set_dirty_tracking(0);
338 qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
340 expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
342 return (stage == 2) && (expected_time <= migrate_max_downtime());
345 static inline void *host_from_stream_offset(QEMUFile *f,
346 ram_addr_t offset,
347 int flags)
349 static RAMBlock *block = NULL;
350 char id[256];
351 uint8_t len;
353 if (flags & RAM_SAVE_FLAG_CONTINUE) {
354 if (!block) {
355 fprintf(stderr, "Ack, bad migration stream!\n");
356 return NULL;
359 return block->host + offset;
362 len = qemu_get_byte(f);
363 qemu_get_buffer(f, (uint8_t *)id, len);
364 id[len] = 0;
366 QLIST_FOREACH(block, &ram_list.blocks, next) {
367 if (!strncmp(id, block->idstr, sizeof(id)))
368 return block->host + offset;
371 fprintf(stderr, "Can't find block %s!\n", id);
372 return NULL;
375 int ram_load(QEMUFile *f, void *opaque, int version_id)
377 ram_addr_t addr;
378 int flags;
379 int error;
381 if (version_id < 3 || version_id > 4) {
382 return -EINVAL;
385 do {
386 addr = qemu_get_be64(f);
388 flags = addr & ~TARGET_PAGE_MASK;
389 addr &= TARGET_PAGE_MASK;
391 if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
392 if (version_id == 3) {
393 if (addr != ram_bytes_total()) {
394 return -EINVAL;
396 } else {
397 /* Synchronize RAM block list */
398 char id[256];
399 ram_addr_t length;
400 ram_addr_t total_ram_bytes = addr;
402 while (total_ram_bytes) {
403 RAMBlock *block;
404 uint8_t len;
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);
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;
419 if (!block) {
420 fprintf(stderr, "Unknown ramblock \"%s\", cannot "
421 "accept migration\n", id);
422 return -EINVAL;
425 total_ram_bytes -= length;
430 if (flags & RAM_SAVE_FLAG_COMPRESS) {
431 void *host;
432 uint8_t ch;
434 if (version_id == 3)
435 host = qemu_get_ram_ptr(addr);
436 else
437 host = host_from_stream_offset(f, addr, flags);
438 if (!host) {
439 return -EINVAL;
442 ch = qemu_get_byte(f);
443 memset(host, ch, TARGET_PAGE_SIZE);
444 #ifndef _WIN32
445 if (ch == 0 &&
446 (!kvm_enabled() || kvm_has_sync_mmu())) {
447 qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
449 #endif
450 } else if (flags & RAM_SAVE_FLAG_PAGE) {
451 void *host;
453 if (version_id == 3)
454 host = qemu_get_ram_ptr(addr);
455 else
456 host = host_from_stream_offset(f, addr, flags);
458 qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
460 error = qemu_file_get_error(f);
461 if (error) {
462 return error;
464 } while (!(flags & RAM_SAVE_FLAG_EOS));
466 return 0;
469 #ifdef HAS_AUDIO
470 struct soundhw {
471 const char *name;
472 const char *descr;
473 int enabled;
474 int isa;
475 union {
476 int (*init_isa) (qemu_irq *pic);
477 int (*init_pci) (PCIBus *bus);
478 } init;
481 static struct soundhw soundhw[] = {
482 #ifdef HAS_AUDIO_CHOICE
483 #if defined(TARGET_I386) || defined(TARGET_MIPS)
485 "pcspk",
486 "PC speaker",
489 { .init_isa = pcspk_audio_init }
491 #endif
493 #ifdef CONFIG_SB16
495 "sb16",
496 "Creative Sound Blaster 16",
499 { .init_isa = SB16_init }
501 #endif
503 #ifdef CONFIG_CS4231A
505 "cs4231a",
506 "CS4231A",
509 { .init_isa = cs4231a_init }
511 #endif
513 #ifdef CONFIG_ADLIB
515 "adlib",
516 #ifdef HAS_YMF262
517 "Yamaha YMF262 (OPL3)",
518 #else
519 "Yamaha YM3812 (OPL2)",
520 #endif
523 { .init_isa = Adlib_init }
525 #endif
527 #ifdef CONFIG_GUS
529 "gus",
530 "Gravis Ultrasound GF1",
533 { .init_isa = GUS_init }
535 #endif
537 #ifdef CONFIG_AC97
539 "ac97",
540 "Intel 82801AA AC97 Audio",
543 { .init_pci = ac97_init }
545 #endif
547 #ifdef CONFIG_ES1370
549 "es1370",
550 "ENSONIQ AudioPCI ES1370",
553 { .init_pci = es1370_init }
555 #endif
557 #ifdef CONFIG_HDA
559 "hda",
560 "Intel HD Audio",
563 { .init_pci = intel_hda_and_codec_init }
565 #endif
567 #endif /* HAS_AUDIO_CHOICE */
569 { NULL, NULL, 0, 0, { NULL } }
572 void select_soundhw(const char *optarg)
574 struct soundhw *c;
576 if (*optarg == '?') {
577 show_valid_cards:
579 printf("Valid sound card names (comma separated):\n");
580 for (c = soundhw; c->name; ++c) {
581 printf ("%-11s %s\n", c->name, c->descr);
583 printf("\n-soundhw all will enable all of the above\n");
584 exit(*optarg != '?');
586 else {
587 size_t l;
588 const char *p;
589 char *e;
590 int bad_card = 0;
592 if (!strcmp(optarg, "all")) {
593 for (c = soundhw; c->name; ++c) {
594 c->enabled = 1;
596 return;
599 p = optarg;
600 while (*p) {
601 e = strchr(p, ',');
602 l = !e ? strlen(p) : (size_t) (e - p);
604 for (c = soundhw; c->name; ++c) {
605 if (!strncmp(c->name, p, l) && !c->name[l]) {
606 c->enabled = 1;
607 break;
611 if (!c->name) {
612 if (l > 80) {
613 fprintf(stderr,
614 "Unknown sound card name (too big to show)\n");
616 else {
617 fprintf(stderr, "Unknown sound card name `%.*s'\n",
618 (int) l, p);
620 bad_card = 1;
622 p += l + (e != NULL);
625 if (bad_card) {
626 goto show_valid_cards;
631 void audio_init(qemu_irq *isa_pic, PCIBus *pci_bus)
633 struct soundhw *c;
635 for (c = soundhw; c->name; ++c) {
636 if (c->enabled) {
637 if (c->isa) {
638 if (isa_pic) {
639 c->init.init_isa(isa_pic);
641 } else {
642 if (pci_bus) {
643 c->init.init_pci(pci_bus);
649 #else
650 void select_soundhw(const char *optarg)
653 void audio_init(qemu_irq *isa_pic, PCIBus *pci_bus)
656 #endif
658 int qemu_uuid_parse(const char *str, uint8_t *uuid)
660 int ret;
662 if (strlen(str) != 36) {
663 return -1;
666 ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
667 &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
668 &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14],
669 &uuid[15]);
671 if (ret != 16) {
672 return -1;
674 #ifdef TARGET_I386
675 smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
676 #endif
677 return 0;
680 void do_acpitable_option(const char *optarg)
682 #ifdef TARGET_I386
683 if (acpi_table_add(optarg) < 0) {
684 fprintf(stderr, "Wrong acpi table provided\n");
685 exit(1);
687 #endif
690 void do_smbios_option(const char *optarg)
692 #ifdef TARGET_I386
693 if (smbios_entry_add(optarg) < 0) {
694 fprintf(stderr, "Wrong smbios provided\n");
695 exit(1);
697 #endif
700 void cpudef_init(void)
702 #if defined(cpudef_setup)
703 cpudef_setup(); /* parse cpu definitions in target config file */
704 #endif
707 int audio_available(void)
709 #ifdef HAS_AUDIO
710 return 1;
711 #else
712 return 0;
713 #endif
716 int tcg_available(void)
718 return 1;
721 int kvm_available(void)
723 #ifdef CONFIG_KVM
724 return 1;
725 #else
726 return 0;
727 #endif
730 int xen_available(void)
732 #ifdef CONFIG_XEN
733 return 1;
734 #else
735 return 0;
736 #endif