slirp: Keep next_m always valid
[qemu.git] / arch_init.c
bloba95ef495fef2c04677c390b812596cb7fe55a902
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"
44 #include "exec-memory.h"
45 #include "hw/pcspk.h"
47 #ifdef TARGET_SPARC
48 int graphic_width = 1024;
49 int graphic_height = 768;
50 int graphic_depth = 8;
51 #else
52 int graphic_width = 800;
53 int graphic_height = 600;
54 int graphic_depth = 15;
55 #endif
57 const char arch_config_name[] = CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf";
59 #if defined(TARGET_ALPHA)
60 #define QEMU_ARCH QEMU_ARCH_ALPHA
61 #elif defined(TARGET_ARM)
62 #define QEMU_ARCH QEMU_ARCH_ARM
63 #elif defined(TARGET_CRIS)
64 #define QEMU_ARCH QEMU_ARCH_CRIS
65 #elif defined(TARGET_I386)
66 #define QEMU_ARCH QEMU_ARCH_I386
67 #elif defined(TARGET_M68K)
68 #define QEMU_ARCH QEMU_ARCH_M68K
69 #elif defined(TARGET_LM32)
70 #define QEMU_ARCH QEMU_ARCH_LM32
71 #elif defined(TARGET_MICROBLAZE)
72 #define QEMU_ARCH QEMU_ARCH_MICROBLAZE
73 #elif defined(TARGET_MIPS)
74 #define QEMU_ARCH QEMU_ARCH_MIPS
75 #elif defined(TARGET_PPC)
76 #define QEMU_ARCH QEMU_ARCH_PPC
77 #elif defined(TARGET_S390X)
78 #define QEMU_ARCH QEMU_ARCH_S390X
79 #elif defined(TARGET_SH4)
80 #define QEMU_ARCH QEMU_ARCH_SH4
81 #elif defined(TARGET_SPARC)
82 #define QEMU_ARCH QEMU_ARCH_SPARC
83 #elif defined(TARGET_XTENSA)
84 #define QEMU_ARCH QEMU_ARCH_XTENSA
85 #endif
87 const uint32_t arch_type = QEMU_ARCH;
89 /***********************************************************/
90 /* ram save/restore */
92 #define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */
93 #define RAM_SAVE_FLAG_COMPRESS 0x02
94 #define RAM_SAVE_FLAG_MEM_SIZE 0x04
95 #define RAM_SAVE_FLAG_PAGE 0x08
96 #define RAM_SAVE_FLAG_EOS 0x10
97 #define RAM_SAVE_FLAG_CONTINUE 0x20
99 #ifdef __ALTIVEC__
100 #include <altivec.h>
101 #define VECTYPE vector unsigned char
102 #define SPLAT(p) vec_splat(vec_ld(0, p), 0)
103 #define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
104 #elif defined __SSE2__
105 #include <emmintrin.h>
106 #define VECTYPE __m128i
107 #define SPLAT(p) _mm_set1_epi8(*(p))
108 #define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
109 #else
110 #define VECTYPE unsigned long
111 #define SPLAT(p) (*(p) * (~0UL / 255))
112 #define ALL_EQ(v1, v2) ((v1) == (v2))
113 #endif
115 static int is_dup_page(uint8_t *page)
117 VECTYPE *p = (VECTYPE *)page;
118 VECTYPE val = SPLAT(page);
119 int i;
121 for (i = 0; i < TARGET_PAGE_SIZE / sizeof(VECTYPE); i++) {
122 if (!ALL_EQ(val, p[i])) {
123 return 0;
127 return 1;
130 static RAMBlock *last_block;
131 static ram_addr_t last_offset;
133 static int ram_save_block(QEMUFile *f)
135 RAMBlock *block = last_block;
136 ram_addr_t offset = last_offset;
137 int bytes_sent = 0;
138 MemoryRegion *mr;
140 if (!block)
141 block = QLIST_FIRST(&ram_list.blocks);
143 do {
144 mr = block->mr;
145 if (memory_region_get_dirty(mr, offset, TARGET_PAGE_SIZE,
146 DIRTY_MEMORY_MIGRATION)) {
147 uint8_t *p;
148 int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
150 memory_region_reset_dirty(mr, offset, TARGET_PAGE_SIZE,
151 DIRTY_MEMORY_MIGRATION);
153 p = memory_region_get_ram_ptr(mr) + offset;
155 if (is_dup_page(p)) {
156 qemu_put_be64(f, offset | cont | RAM_SAVE_FLAG_COMPRESS);
157 if (!cont) {
158 qemu_put_byte(f, strlen(block->idstr));
159 qemu_put_buffer(f, (uint8_t *)block->idstr,
160 strlen(block->idstr));
162 qemu_put_byte(f, *p);
163 bytes_sent = 1;
164 } else {
165 qemu_put_be64(f, offset | cont | RAM_SAVE_FLAG_PAGE);
166 if (!cont) {
167 qemu_put_byte(f, strlen(block->idstr));
168 qemu_put_buffer(f, (uint8_t *)block->idstr,
169 strlen(block->idstr));
171 qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
172 bytes_sent = TARGET_PAGE_SIZE;
175 break;
178 offset += TARGET_PAGE_SIZE;
179 if (offset >= block->length) {
180 offset = 0;
181 block = QLIST_NEXT(block, next);
182 if (!block)
183 block = QLIST_FIRST(&ram_list.blocks);
185 } while (block != last_block || offset != last_offset);
187 last_block = block;
188 last_offset = offset;
190 return bytes_sent;
193 static uint64_t bytes_transferred;
195 static ram_addr_t ram_save_remaining(void)
197 RAMBlock *block;
198 ram_addr_t count = 0;
200 QLIST_FOREACH(block, &ram_list.blocks, next) {
201 ram_addr_t addr;
202 for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
203 if (memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
204 DIRTY_MEMORY_MIGRATION)) {
205 count++;
210 return count;
213 uint64_t ram_bytes_remaining(void)
215 return ram_save_remaining() * TARGET_PAGE_SIZE;
218 uint64_t ram_bytes_transferred(void)
220 return bytes_transferred;
223 uint64_t ram_bytes_total(void)
225 RAMBlock *block;
226 uint64_t total = 0;
228 QLIST_FOREACH(block, &ram_list.blocks, next)
229 total += block->length;
231 return total;
234 static int block_compar(const void *a, const void *b)
236 RAMBlock * const *ablock = a;
237 RAMBlock * const *bblock = b;
239 return strcmp((*ablock)->idstr, (*bblock)->idstr);
242 static void sort_ram_list(void)
244 RAMBlock *block, *nblock, **blocks;
245 int n;
246 n = 0;
247 QLIST_FOREACH(block, &ram_list.blocks, next) {
248 ++n;
250 blocks = g_malloc(n * sizeof *blocks);
251 n = 0;
252 QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) {
253 blocks[n++] = block;
254 QLIST_REMOVE(block, next);
256 qsort(blocks, n, sizeof *blocks, block_compar);
257 while (--n >= 0) {
258 QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next);
260 g_free(blocks);
263 int ram_save_live(Monitor *mon, QEMUFile *f, int stage, void *opaque)
265 ram_addr_t addr;
266 uint64_t bytes_transferred_last;
267 double bwidth = 0;
268 uint64_t expected_time = 0;
269 int ret;
271 if (stage < 0) {
272 memory_global_dirty_log_stop();
273 return 0;
276 memory_global_sync_dirty_bitmap(get_system_memory());
278 if (stage == 1) {
279 RAMBlock *block;
280 bytes_transferred = 0;
281 last_block = NULL;
282 last_offset = 0;
283 sort_ram_list();
285 /* Make sure all dirty bits are set */
286 QLIST_FOREACH(block, &ram_list.blocks, next) {
287 for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
288 if (!memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
289 DIRTY_MEMORY_MIGRATION)) {
290 memory_region_set_dirty(block->mr, addr, TARGET_PAGE_SIZE);
295 memory_global_dirty_log_start();
297 qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE);
299 QLIST_FOREACH(block, &ram_list.blocks, next) {
300 qemu_put_byte(f, strlen(block->idstr));
301 qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr));
302 qemu_put_be64(f, block->length);
306 bytes_transferred_last = bytes_transferred;
307 bwidth = qemu_get_clock_ns(rt_clock);
309 while ((ret = qemu_file_rate_limit(f)) == 0) {
310 int bytes_sent;
312 bytes_sent = ram_save_block(f);
313 bytes_transferred += bytes_sent;
314 if (bytes_sent == 0) { /* no more blocks */
315 break;
319 if (ret < 0) {
320 return ret;
323 bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
324 bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
326 /* if we haven't transferred anything this round, force expected_time to a
327 * a very high value, but without crashing */
328 if (bwidth == 0) {
329 bwidth = 0.000001;
332 /* try transferring iterative blocks of memory */
333 if (stage == 3) {
334 int bytes_sent;
336 /* flush all remaining blocks regardless of rate limiting */
337 while ((bytes_sent = ram_save_block(f)) != 0) {
338 bytes_transferred += bytes_sent;
340 memory_global_dirty_log_stop();
343 qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
345 expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
347 return (stage == 2) && (expected_time <= migrate_max_downtime());
350 static inline void *host_from_stream_offset(QEMUFile *f,
351 ram_addr_t offset,
352 int flags)
354 static RAMBlock *block = NULL;
355 char id[256];
356 uint8_t len;
358 if (flags & RAM_SAVE_FLAG_CONTINUE) {
359 if (!block) {
360 fprintf(stderr, "Ack, bad migration stream!\n");
361 return NULL;
364 return memory_region_get_ram_ptr(block->mr) + offset;
367 len = qemu_get_byte(f);
368 qemu_get_buffer(f, (uint8_t *)id, len);
369 id[len] = 0;
371 QLIST_FOREACH(block, &ram_list.blocks, next) {
372 if (!strncmp(id, block->idstr, sizeof(id)))
373 return memory_region_get_ram_ptr(block->mr) + offset;
376 fprintf(stderr, "Can't find block %s!\n", id);
377 return NULL;
380 int ram_load(QEMUFile *f, void *opaque, int version_id)
382 ram_addr_t addr;
383 int flags;
384 int error;
386 if (version_id < 4 || version_id > 4) {
387 return -EINVAL;
390 do {
391 addr = qemu_get_be64(f);
393 flags = addr & ~TARGET_PAGE_MASK;
394 addr &= TARGET_PAGE_MASK;
396 if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
397 if (version_id == 4) {
398 /* Synchronize RAM block list */
399 char id[256];
400 ram_addr_t length;
401 ram_addr_t total_ram_bytes = addr;
403 while (total_ram_bytes) {
404 RAMBlock *block;
405 uint8_t len;
407 len = qemu_get_byte(f);
408 qemu_get_buffer(f, (uint8_t *)id, len);
409 id[len] = 0;
410 length = qemu_get_be64(f);
412 QLIST_FOREACH(block, &ram_list.blocks, next) {
413 if (!strncmp(id, block->idstr, sizeof(id))) {
414 if (block->length != length)
415 return -EINVAL;
416 break;
420 if (!block) {
421 fprintf(stderr, "Unknown ramblock \"%s\", cannot "
422 "accept migration\n", id);
423 return -EINVAL;
426 total_ram_bytes -= length;
431 if (flags & RAM_SAVE_FLAG_COMPRESS) {
432 void *host;
433 uint8_t ch;
435 host = host_from_stream_offset(f, addr, flags);
436 if (!host) {
437 return -EINVAL;
440 ch = qemu_get_byte(f);
441 memset(host, ch, TARGET_PAGE_SIZE);
442 #ifndef _WIN32
443 if (ch == 0 &&
444 (!kvm_enabled() || kvm_has_sync_mmu())) {
445 qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
447 #endif
448 } else if (flags & RAM_SAVE_FLAG_PAGE) {
449 void *host;
451 host = host_from_stream_offset(f, addr, flags);
453 qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
455 error = qemu_file_get_error(f);
456 if (error) {
457 return error;
459 } while (!(flags & RAM_SAVE_FLAG_EOS));
461 return 0;
464 #ifdef HAS_AUDIO
465 struct soundhw {
466 const char *name;
467 const char *descr;
468 int enabled;
469 int isa;
470 union {
471 int (*init_isa) (ISABus *bus);
472 int (*init_pci) (PCIBus *bus);
473 } init;
476 static struct soundhw soundhw[] = {
477 #ifdef HAS_AUDIO_CHOICE
478 #if defined(TARGET_I386) || defined(TARGET_MIPS)
480 "pcspk",
481 "PC speaker",
484 { .init_isa = pcspk_audio_init }
486 #endif
488 #ifdef CONFIG_SB16
490 "sb16",
491 "Creative Sound Blaster 16",
494 { .init_isa = SB16_init }
496 #endif
498 #ifdef CONFIG_CS4231A
500 "cs4231a",
501 "CS4231A",
504 { .init_isa = cs4231a_init }
506 #endif
508 #ifdef CONFIG_ADLIB
510 "adlib",
511 #ifdef HAS_YMF262
512 "Yamaha YMF262 (OPL3)",
513 #else
514 "Yamaha YM3812 (OPL2)",
515 #endif
518 { .init_isa = Adlib_init }
520 #endif
522 #ifdef CONFIG_GUS
524 "gus",
525 "Gravis Ultrasound GF1",
528 { .init_isa = GUS_init }
530 #endif
532 #ifdef CONFIG_AC97
534 "ac97",
535 "Intel 82801AA AC97 Audio",
538 { .init_pci = ac97_init }
540 #endif
542 #ifdef CONFIG_ES1370
544 "es1370",
545 "ENSONIQ AudioPCI ES1370",
548 { .init_pci = es1370_init }
550 #endif
552 #ifdef CONFIG_HDA
554 "hda",
555 "Intel HD Audio",
558 { .init_pci = intel_hda_and_codec_init }
560 #endif
562 #endif /* HAS_AUDIO_CHOICE */
564 { NULL, NULL, 0, 0, { NULL } }
567 void select_soundhw(const char *optarg)
569 struct soundhw *c;
571 if (*optarg == '?') {
572 show_valid_cards:
574 printf("Valid sound card names (comma separated):\n");
575 for (c = soundhw; c->name; ++c) {
576 printf ("%-11s %s\n", c->name, c->descr);
578 printf("\n-soundhw all will enable all of the above\n");
579 exit(*optarg != '?');
581 else {
582 size_t l;
583 const char *p;
584 char *e;
585 int bad_card = 0;
587 if (!strcmp(optarg, "all")) {
588 for (c = soundhw; c->name; ++c) {
589 c->enabled = 1;
591 return;
594 p = optarg;
595 while (*p) {
596 e = strchr(p, ',');
597 l = !e ? strlen(p) : (size_t) (e - p);
599 for (c = soundhw; c->name; ++c) {
600 if (!strncmp(c->name, p, l) && !c->name[l]) {
601 c->enabled = 1;
602 break;
606 if (!c->name) {
607 if (l > 80) {
608 fprintf(stderr,
609 "Unknown sound card name (too big to show)\n");
611 else {
612 fprintf(stderr, "Unknown sound card name `%.*s'\n",
613 (int) l, p);
615 bad_card = 1;
617 p += l + (e != NULL);
620 if (bad_card) {
621 goto show_valid_cards;
626 void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
628 struct soundhw *c;
630 for (c = soundhw; c->name; ++c) {
631 if (c->enabled) {
632 if (c->isa) {
633 if (isa_bus) {
634 c->init.init_isa(isa_bus);
636 } else {
637 if (pci_bus) {
638 c->init.init_pci(pci_bus);
644 #else
645 void select_soundhw(const char *optarg)
648 void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
651 #endif
653 int qemu_uuid_parse(const char *str, uint8_t *uuid)
655 int ret;
657 if (strlen(str) != 36) {
658 return -1;
661 ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
662 &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
663 &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14],
664 &uuid[15]);
666 if (ret != 16) {
667 return -1;
669 #ifdef TARGET_I386
670 smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
671 #endif
672 return 0;
675 void do_acpitable_option(const char *optarg)
677 #ifdef TARGET_I386
678 if (acpi_table_add(optarg) < 0) {
679 fprintf(stderr, "Wrong acpi table provided\n");
680 exit(1);
682 #endif
685 void do_smbios_option(const char *optarg)
687 #ifdef TARGET_I386
688 if (smbios_entry_add(optarg) < 0) {
689 fprintf(stderr, "Wrong smbios provided\n");
690 exit(1);
692 #endif
695 void cpudef_init(void)
697 #if defined(cpudef_setup)
698 cpudef_setup(); /* parse cpu definitions in target config file */
699 #endif
702 int audio_available(void)
704 #ifdef HAS_AUDIO
705 return 1;
706 #else
707 return 0;
708 #endif
711 int tcg_available(void)
713 return 1;
716 int kvm_available(void)
718 #ifdef CONFIG_KVM
719 return 1;
720 #else
721 return 0;
722 #endif
725 int xen_available(void)
727 #ifdef CONFIG_XEN
728 return 1;
729 #else
730 return 0;
731 #endif