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 #include "hw/pcspk.h"
  46 #include "qemu/page_cache.h"
  47
  48 #ifdef DEBUG_ARCH_INIT
  49 #define DPRINTF(fmt, ...) \
  50     do { fprintf(stdout, "arch_init: " fmt, ## __VA_ARGS__); } while (0)
  51 #else
  52 #define DPRINTF(fmt, ...) \
  53     do { } while (0)
  54 #endif
  55
  56 #ifdef TARGET_SPARC
  57 int graphic_width = 1024;
  58 int graphic_height = 768;
  59 int graphic_depth = 8;
  60 #else
  61 int graphic_width = 800;
  62 int graphic_height = 600;
  63 int graphic_depth = 15;
  64 #endif
  65
  66
  67 #if defined(TARGET_ALPHA)
  68 #define QEMU_ARCH QEMU_ARCH_ALPHA
  69 #elif defined(TARGET_ARM)
  70 #define QEMU_ARCH QEMU_ARCH_ARM
  71 #elif defined(TARGET_CRIS)
  72 #define QEMU_ARCH QEMU_ARCH_CRIS
  73 #elif defined(TARGET_I386)
  74 #define QEMU_ARCH QEMU_ARCH_I386
  75 #elif defined(TARGET_M68K)
  76 #define QEMU_ARCH QEMU_ARCH_M68K
  77 #elif defined(TARGET_LM32)
  78 #define QEMU_ARCH QEMU_ARCH_LM32
  79 #elif defined(TARGET_MICROBLAZE)
  80 #define QEMU_ARCH QEMU_ARCH_MICROBLAZE
  81 #elif defined(TARGET_MIPS)
  82 #define QEMU_ARCH QEMU_ARCH_MIPS
  83 #elif defined(TARGET_OPENRISC)
  84 #define QEMU_ARCH QEMU_ARCH_OPENRISC
  85 #elif defined(TARGET_PPC)
  86 #define QEMU_ARCH QEMU_ARCH_PPC
  87 #elif defined(TARGET_S390X)
  88 #define QEMU_ARCH QEMU_ARCH_S390X
  89 #elif defined(TARGET_SH4)
  90 #define QEMU_ARCH QEMU_ARCH_SH4
  91 #elif defined(TARGET_SPARC)
  92 #define QEMU_ARCH QEMU_ARCH_SPARC
  93 #elif defined(TARGET_XTENSA)
  94 #define QEMU_ARCH QEMU_ARCH_XTENSA
  95 #endif
  96
  97 const uint32_t arch_type = QEMU_ARCH;
  98
  99 /***********************************************************/
 100 /* ram save/restore */
 101
 102 #define RAM_SAVE_FLAG_FULL     0x01 /* Obsolete, not used anymore */
 103 #define RAM_SAVE_FLAG_COMPRESS 0x02
 104 #define RAM_SAVE_FLAG_MEM_SIZE 0x04
 105 #define RAM_SAVE_FLAG_PAGE     0x08
 106 #define RAM_SAVE_FLAG_EOS      0x10
 107 #define RAM_SAVE_FLAG_CONTINUE 0x20
 108 #define RAM_SAVE_FLAG_XBZRLE   0x40
 109
 110 #ifdef __ALTIVEC__
 111 #include <altivec.h>
 112 #define VECTYPE        vector unsigned char
 113 #define SPLAT(p)       vec_splat(vec_ld(0, p), 0)
 114 #define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
 115 /* altivec.h may redefine the bool macro as vector type.
 116  * Reset it to POSIX semantics. */
 117 #undef bool
 118 #define bool _Bool
 119 #elif defined __SSE2__
 120 #include <emmintrin.h>
 121 #define VECTYPE        __m128i
 122 #define SPLAT(p)       _mm_set1_epi8(*(p))
 123 #define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
 124 #else
 125 #define VECTYPE        unsigned long
 126 #define SPLAT(p)       (*(p) * (~0UL / 255))
 127 #define ALL_EQ(v1, v2) ((v1) == (v2))
 128 #endif
 129
 130
 131 static struct defconfig_file {
 132     const char *filename;
 133     /* Indicates it is an user config file (disabled by -no-user-config) */
 134     bool userconfig;
 135 } default_config_files[] = {
 136     { CONFIG_QEMU_DATADIR "/cpus-" TARGET_ARCH ".conf",  false },
 137     { CONFIG_QEMU_CONFDIR "/qemu.conf",                   true },
 138     { CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf", true },
 139     { NULL }, /* end of list */
 140 };
 141
 142
 143 int qemu_read_default_config_files(bool userconfig)
 144 {
 145     int ret;
 146     struct defconfig_file *f;
 147
 148     for (f = default_config_files; f->filename; f++) {
 149         if (!userconfig && f->userconfig) {
 150             continue;
 151         }
 152         ret = qemu_read_config_file(f->filename);
 153         if (ret < 0 && ret != -ENOENT) {
 154             return ret;
 155         }
 156     }
 157
 158     return 0;
 159 }
 160
 161 static int is_dup_page(uint8_t *page)
 162 {
 163     VECTYPE *p = (VECTYPE *)page;
 164     VECTYPE val = SPLAT(page);
 165     int i;
 166
 167     for (i = 0; i < TARGET_PAGE_SIZE / sizeof(VECTYPE); i++) {
 168         if (!ALL_EQ(val, p[i])) {
 169             return 0;
 170         }
 171     }
 172
 173     return 1;
 174 }
 175
 176 /* struct contains XBZRLE cache and a static page
 177    used by the compression */
 178 static struct {
 179     /* buffer used for XBZRLE encoding */
 180     uint8_t *encoded_buf;
 181     /* buffer for storing page content */
 182     uint8_t *current_buf;
 183     /* buffer used for XBZRLE decoding */
 184     uint8_t *decoded_buf;
 185     /* Cache for XBZRLE */
 186     PageCache *cache;
 187 } XBZRLE = {
 188     .encoded_buf = NULL,
 189     .current_buf = NULL,
 190     .decoded_buf = NULL,
 191     .cache = NULL,
 192 };
 193
 194
 195 int64_t xbzrle_cache_resize(int64_t new_size)
 196 {
 197     if (XBZRLE.cache != NULL) {
 198         return cache_resize(XBZRLE.cache, new_size / TARGET_PAGE_SIZE) *
 199             TARGET_PAGE_SIZE;
 200     }
 201     return pow2floor(new_size);
 202 }
 203
 204 /* accounting for migration statistics */
 205 typedef struct AccountingInfo {
 206     uint64_t dup_pages;
 207     uint64_t norm_pages;
 208     uint64_t iterations;
 209 } AccountingInfo;
 210
 211 static AccountingInfo acct_info;
 212
 213 static void acct_clear(void)
 214 {
 215     memset(&acct_info, 0, sizeof(acct_info));
 216 }
 217
 218 uint64_t dup_mig_bytes_transferred(void)
 219 {
 220     return acct_info.dup_pages * TARGET_PAGE_SIZE;
 221 }
 222
 223 uint64_t dup_mig_pages_transferred(void)
 224 {
 225     return acct_info.dup_pages;
 226 }
 227
 228 uint64_t norm_mig_bytes_transferred(void)
 229 {
 230     return acct_info.norm_pages * TARGET_PAGE_SIZE;
 231 }
 232
 233 uint64_t norm_mig_pages_transferred(void)
 234 {
 235     return acct_info.norm_pages;
 236 }
 237
 238 static void save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset,
 239         int cont, int flag)
 240 {
 241         qemu_put_be64(f, offset | cont | flag);
 242         if (!cont) {
 243                 qemu_put_byte(f, strlen(block->idstr));
 244                 qemu_put_buffer(f, (uint8_t *)block->idstr,
 245                                 strlen(block->idstr));
 246         }
 247
 248 }
 249
 250 #define ENCODING_FLAG_XBZRLE 0x1
 251
 252 static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,
 253                             ram_addr_t current_addr, RAMBlock *block,
 254                             ram_addr_t offset, int cont)
 255 {
 256     int encoded_len = 0, bytes_sent = -1;
 257     uint8_t *prev_cached_page;
 258
 259     if (!cache_is_cached(XBZRLE.cache, current_addr)) {
 260         cache_insert(XBZRLE.cache, current_addr,
 261                      g_memdup(current_data, TARGET_PAGE_SIZE));
 262         return -1;
 263     }
 264
 265     prev_cached_page = get_cached_data(XBZRLE.cache, current_addr);
 266
 267     /* save current buffer into memory */
 268     memcpy(XBZRLE.current_buf, current_data, TARGET_PAGE_SIZE);
 269
 270     /* XBZRLE encoding (if there is no overflow) */
 271     encoded_len = xbzrle_encode_buffer(prev_cached_page, XBZRLE.current_buf,
 272                                        TARGET_PAGE_SIZE, XBZRLE.encoded_buf,
 273                                        TARGET_PAGE_SIZE);
 274     if (encoded_len == 0) {
 275         DPRINTF("Skipping unmodified page\n");
 276         return 0;
 277     } else if (encoded_len == -1) {
 278         DPRINTF("Overflow\n");
 279         /* update data in the cache */
 280         memcpy(prev_cached_page, current_data, TARGET_PAGE_SIZE);
 281         return -1;
 282     }
 283
 284     /* we need to update the data in the cache, in order to get the same data */
 285     memcpy(prev_cached_page, XBZRLE.current_buf, TARGET_PAGE_SIZE);
 286
 287     /* Send XBZRLE based compressed page */
 288     save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_XBZRLE);
 289     qemu_put_byte(f, ENCODING_FLAG_XBZRLE);
 290     qemu_put_be16(f, encoded_len);
 291     qemu_put_buffer(f, XBZRLE.encoded_buf, encoded_len);
 292     bytes_sent = encoded_len + 1 + 2;
 293
 294     return bytes_sent;
 295 }
 296
 297 static RAMBlock *last_block;
 298 static ram_addr_t last_offset;
 299
 300 /*
 301  * ram_save_block: Writes a page of memory to the stream f
 302  *
 303  * Returns:  0: if the page hasn't changed
 304  *          -1: if there are no more dirty pages
 305  *           n: the amount of bytes written in other case
 306  */
 307
 308 static int ram_save_block(QEMUFile *f)
 309 {
 310     RAMBlock *block = last_block;
 311     ram_addr_t offset = last_offset;
 312     int bytes_sent = -1;
 313     MemoryRegion *mr;
 314     ram_addr_t current_addr;
 315
 316     if (!block)
 317         block = QLIST_FIRST(&ram_list.blocks);
 318
 319     do {
 320         mr = block->mr;
 321         if (memory_region_get_dirty(mr, offset, TARGET_PAGE_SIZE,
 322                                     DIRTY_MEMORY_MIGRATION)) {
 323             uint8_t *p;
 324             int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
 325
 326             memory_region_reset_dirty(mr, offset, TARGET_PAGE_SIZE,
 327                                       DIRTY_MEMORY_MIGRATION);
 328
 329             p = memory_region_get_ram_ptr(mr) + offset;
 330
 331             if (is_dup_page(p)) {
 332                 acct_info.dup_pages++;
 333                 save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_COMPRESS);
 334                 qemu_put_byte(f, *p);
 335                 bytes_sent = 1;
 336             } else if (migrate_use_xbzrle()) {
 337                 current_addr = block->offset + offset;
 338                 bytes_sent = save_xbzrle_page(f, p, current_addr, block,
 339                                               offset, cont);
 340                 p = get_cached_data(XBZRLE.cache, current_addr);
 341             }
 342
 343             /* either we didn't send yet (we may have had XBZRLE overflow) */
 344             if (bytes_sent == -1) {
 345                 save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE);
 346                 qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
 347                 bytes_sent = TARGET_PAGE_SIZE;
 348                 acct_info.norm_pages++;
 349             }
 350
 351             /* if page is unmodified, continue to the next */
 352             if (bytes_sent != 0) {
 353                 break;
 354             }
 355         }
 356
 357         offset += TARGET_PAGE_SIZE;
 358         if (offset >= block->length) {
 359             offset = 0;
 360             block = QLIST_NEXT(block, next);
 361             if (!block)
 362                 block = QLIST_FIRST(&ram_list.blocks);
 363         }
 364     } while (block != last_block || offset != last_offset);
 365
 366     last_block = block;
 367     last_offset = offset;
 368
 369     return bytes_sent;
 370 }
 371
 372 static uint64_t bytes_transferred;
 373
 374 static ram_addr_t ram_save_remaining(void)
 375 {
 376     return ram_list.dirty_pages;
 377 }
 378
 379 uint64_t ram_bytes_remaining(void)
 380 {
 381     return ram_save_remaining() * TARGET_PAGE_SIZE;
 382 }
 383
 384 uint64_t ram_bytes_transferred(void)
 385 {
 386     return bytes_transferred;
 387 }
 388
 389 uint64_t ram_bytes_total(void)
 390 {
 391     RAMBlock *block;
 392     uint64_t total = 0;
 393
 394     QLIST_FOREACH(block, &ram_list.blocks, next)
 395         total += block->length;
 396
 397     return total;
 398 }
 399
 400 static int block_compar(const void *a, const void *b)
 401 {
 402     RAMBlock * const *ablock = a;
 403     RAMBlock * const *bblock = b;
 404
 405     return strcmp((*ablock)->idstr, (*bblock)->idstr);
 406 }
 407
 408 static void sort_ram_list(void)
 409 {
 410     RAMBlock *block, *nblock, **blocks;
 411     int n;
 412     n = 0;
 413     QLIST_FOREACH(block, &ram_list.blocks, next) {
 414         ++n;
 415     }
 416     blocks = g_malloc(n * sizeof *blocks);
 417     n = 0;
 418     QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) {
 419         blocks[n++] = block;
 420         QLIST_REMOVE(block, next);
 421     }
 422     qsort(blocks, n, sizeof *blocks, block_compar);
 423     while (--n >= 0) {
 424         QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next);
 425     }
 426     g_free(blocks);
 427 }
 428
 429 static void migration_end(void)
 430 {
 431     memory_global_dirty_log_stop();
 432
 433     if (migrate_use_xbzrle()) {
 434         cache_fini(XBZRLE.cache);
 435         g_free(XBZRLE.cache);
 436         g_free(XBZRLE.encoded_buf);
 437         g_free(XBZRLE.current_buf);
 438         g_free(XBZRLE.decoded_buf);
 439         XBZRLE.cache = NULL;
 440     }
 441 }
 442
 443 static void ram_migration_cancel(void *opaque)
 444 {
 445     migration_end();
 446 }
 447
 448 #define MAX_WAIT 50 /* ms, half buffered_file limit */
 449
 450 static int ram_save_setup(QEMUFile *f, void *opaque)
 451 {
 452     ram_addr_t addr;
 453     RAMBlock *block;
 454
 455     bytes_transferred = 0;
 456     last_block = NULL;
 457     last_offset = 0;
 458     sort_ram_list();
 459
 460     if (migrate_use_xbzrle()) {
 461         XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() /
 462                                   TARGET_PAGE_SIZE,
 463                                   TARGET_PAGE_SIZE);
 464         if (!XBZRLE.cache) {
 465             DPRINTF("Error creating cache\n");
 466             return -1;
 467         }
 468         XBZRLE.encoded_buf = g_malloc0(TARGET_PAGE_SIZE);
 469         XBZRLE.current_buf = g_malloc(TARGET_PAGE_SIZE);
 470         acct_clear();
 471     }
 472
 473     /* Make sure all dirty bits are set */
 474     QLIST_FOREACH(block, &ram_list.blocks, next) {
 475         for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
 476             if (!memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
 477                                          DIRTY_MEMORY_MIGRATION)) {
 478                 memory_region_set_dirty(block->mr, addr, TARGET_PAGE_SIZE);
 479             }
 480         }
 481     }
 482
 483     memory_global_dirty_log_start();
 484
 485     qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE);
 486
 487     QLIST_FOREACH(block, &ram_list.blocks, next) {
 488         qemu_put_byte(f, strlen(block->idstr));
 489         qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr));
 490         qemu_put_be64(f, block->length);
 491     }
 492
 493     qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
 494
 495     return 0;
 496 }
 497
 498 static int ram_save_iterate(QEMUFile *f, void *opaque)
 499 {
 500     uint64_t bytes_transferred_last;
 501     double bwidth = 0;
 502     int ret;
 503     int i;
 504     uint64_t expected_time;
 505
 506     bytes_transferred_last = bytes_transferred;
 507     bwidth = qemu_get_clock_ns(rt_clock);
 508
 509     i = 0;
 510     while ((ret = qemu_file_rate_limit(f)) == 0) {
 511         int bytes_sent;
 512
 513         bytes_sent = ram_save_block(f);
 514         /* no more blocks to sent */
 515         if (bytes_sent < 0) {
 516             break;
 517         }
 518         bytes_transferred += bytes_sent;
 519         acct_info.iterations++;
 520         /* we want to check in the 1st loop, just in case it was the 1st time
 521            and we had to sync the dirty bitmap.
 522            qemu_get_clock_ns() is a bit expensive, so we only check each some
 523            iterations
 524         */
 525         if ((i & 63) == 0) {
 526             uint64_t t1 = (qemu_get_clock_ns(rt_clock) - bwidth) / 1000000;
 527             if (t1 > MAX_WAIT) {
 528                 DPRINTF("big wait: " PRIu64 " milliseconds, %d iterations\n",
 529                         t1, i);
 530                 break;
 531             }
 532         }
 533         i++;
 534     }
 535
 536     if (ret < 0) {
 537         return ret;
 538     }
 539
 540     bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
 541     bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;
 542
 543     /* if we haven't transferred anything this round, force expected_time to a
 544      * a very high value, but without crashing */
 545     if (bwidth == 0) {
 546         bwidth = 0.000001;
 547     }
 548
 549     qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
 550
 551     expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
 552
 553     DPRINTF("ram_save_live: expected(" PRIu64 ") <= max(" PRIu64 ")?\n",
 554             expected_time, migrate_max_downtime());
 555
 556     if (expected_time <= migrate_max_downtime()) {
 557         memory_global_sync_dirty_bitmap(get_system_memory());
 558         expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
 559
 560         return expected_time <= migrate_max_downtime();
 561     }
 562     return 0;
 563 }
 564
 565 static int ram_save_complete(QEMUFile *f, void *opaque)
 566 {
 567     memory_global_sync_dirty_bitmap(get_system_memory());
 568
 569     /* try transferring iterative blocks of memory */
 570
 571     /* flush all remaining blocks regardless of rate limiting */
 572     while (true) {
 573         int bytes_sent;
 574
 575         bytes_sent = ram_save_block(f);
 576         /* no more blocks to sent */
 577         if (bytes_sent < 0) {
 578             break;
 579         }
 580         bytes_transferred += bytes_sent;
 581     }
 582     memory_global_dirty_log_stop();
 583
 584     qemu_put_be64(f, RAM_SAVE_FLAG_EOS);
 585
 586     return 0;
 587 }
 588
 589 static int load_xbzrle(QEMUFile *f, ram_addr_t addr, void *host)
 590 {
 591     int ret, rc = 0;
 592     unsigned int xh_len;
 593     int xh_flags;
 594
 595     if (!XBZRLE.decoded_buf) {
 596         XBZRLE.decoded_buf = g_malloc(TARGET_PAGE_SIZE);
 597     }
 598
 599     /* extract RLE header */
 600     xh_flags = qemu_get_byte(f);
 601     xh_len = qemu_get_be16(f);
 602
 603     if (xh_flags != ENCODING_FLAG_XBZRLE) {
 604         fprintf(stderr, "Failed to load XBZRLE page - wrong compression!\n");
 605         return -1;
 606     }
 607
 608     if (xh_len > TARGET_PAGE_SIZE) {
 609         fprintf(stderr, "Failed to load XBZRLE page - len overflow!\n");
 610         return -1;
 611     }
 612     /* load data and decode */
 613     qemu_get_buffer(f, XBZRLE.decoded_buf, xh_len);
 614
 615     /* decode RLE */
 616     ret = xbzrle_decode_buffer(XBZRLE.decoded_buf, xh_len, host,
 617                                TARGET_PAGE_SIZE);
 618     if (ret == -1) {
 619         fprintf(stderr, "Failed to load XBZRLE page - decode error!\n");
 620         rc = -1;
 621     } else  if (ret > TARGET_PAGE_SIZE) {
 622         fprintf(stderr, "Failed to load XBZRLE page - size %d exceeds %d!\n",
 623                 ret, TARGET_PAGE_SIZE);
 624         abort();
 625     }
 626
 627     return rc;
 628 }
 629
 630 static inline void *host_from_stream_offset(QEMUFile *f,
 631                                             ram_addr_t offset,
 632                                             int flags)
 633 {
 634     static RAMBlock *block = NULL;
 635     char id[256];
 636     uint8_t len;
 637
 638     if (flags & RAM_SAVE_FLAG_CONTINUE) {
 639         if (!block) {
 640             fprintf(stderr, "Ack, bad migration stream!\n");
 641             return NULL;
 642         }
 643
 644         return memory_region_get_ram_ptr(block->mr) + offset;
 645     }
 646
 647     len = qemu_get_byte(f);
 648     qemu_get_buffer(f, (uint8_t *)id, len);
 649     id[len] = 0;
 650
 651     QLIST_FOREACH(block, &ram_list.blocks, next) {
 652         if (!strncmp(id, block->idstr, sizeof(id)))
 653             return memory_region_get_ram_ptr(block->mr) + offset;
 654     }
 655
 656     fprintf(stderr, "Can't find block %s!\n", id);
 657     return NULL;
 658 }
 659
 660 static int ram_load(QEMUFile *f, void *opaque, int version_id)
 661 {
 662     ram_addr_t addr;
 663     int flags, ret = 0;
 664     int error;
 665     static uint64_t seq_iter;
 666
 667     seq_iter++;
 668
 669     if (version_id < 4 || version_id > 4) {
 670         return -EINVAL;
 671     }
 672
 673     do {
 674         addr = qemu_get_be64(f);
 675
 676         flags = addr & ~TARGET_PAGE_MASK;
 677         addr &= TARGET_PAGE_MASK;
 678
 679         if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
 680             if (version_id == 4) {
 681                 /* Synchronize RAM block list */
 682                 char id[256];
 683                 ram_addr_t length;
 684                 ram_addr_t total_ram_bytes = addr;
 685
 686                 while (total_ram_bytes) {
 687                     RAMBlock *block;
 688                     uint8_t len;
 689
 690                     len = qemu_get_byte(f);
 691                     qemu_get_buffer(f, (uint8_t *)id, len);
 692                     id[len] = 0;
 693                     length = qemu_get_be64(f);
 694
 695                     QLIST_FOREACH(block, &ram_list.blocks, next) {
 696                         if (!strncmp(id, block->idstr, sizeof(id))) {
 697                             if (block->length != length) {
 698                                 ret =  -EINVAL;
 699                                 goto done;
 700                             }
 701                             break;
 702                         }
 703                     }
 704
 705                     if (!block) {
 706                         fprintf(stderr, "Unknown ramblock \"%s\", cannot "
 707                                 "accept migration\n", id);
 708                         ret = -EINVAL;
 709                         goto done;
 710                     }
 711
 712                     total_ram_bytes -= length;
 713                 }
 714             }
 715         }
 716
 717         if (flags & RAM_SAVE_FLAG_COMPRESS) {
 718             void *host;
 719             uint8_t ch;
 720
 721             host = host_from_stream_offset(f, addr, flags);
 722             if (!host) {
 723                 return -EINVAL;
 724             }
 725
 726             ch = qemu_get_byte(f);
 727             memset(host, ch, TARGET_PAGE_SIZE);
 728 #ifndef _WIN32
 729             if (ch == 0 &&
 730                 (!kvm_enabled() || kvm_has_sync_mmu())) {
 731                 qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
 732             }
 733 #endif
 734         } else if (flags & RAM_SAVE_FLAG_PAGE) {
 735             void *host;
 736
 737             host = host_from_stream_offset(f, addr, flags);
 738             if (!host) {
 739                 return -EINVAL;
 740             }
 741
 742             qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
 743         } else if (flags & RAM_SAVE_FLAG_XBZRLE) {
 744             if (!migrate_use_xbzrle()) {
 745                 return -EINVAL;
 746             }
 747             void *host = host_from_stream_offset(f, addr, flags);
 748             if (!host) {
 749                 return -EINVAL;
 750             }
 751
 752             if (load_xbzrle(f, addr, host) < 0) {
 753                 ret = -EINVAL;
 754                 goto done;
 755             }
 756         }
 757         error = qemu_file_get_error(f);
 758         if (error) {
 759             ret = error;
 760             goto done;
 761         }
 762     } while (!(flags & RAM_SAVE_FLAG_EOS));
 763
 764 done:
 765     DPRINTF("Completed load of VM with exit code %d seq iteration " PRIu64 "\n",
 766             ret, seq_iter);
 767     return ret;
 768 }
 769
 770 SaveVMHandlers savevm_ram_handlers = {
 771     .save_live_setup = ram_save_setup,
 772     .save_live_iterate = ram_save_iterate,
 773     .save_live_complete = ram_save_complete,
 774     .load_state = ram_load,
 775     .cancel = ram_migration_cancel,
 776 };
 777
 778 #ifdef HAS_AUDIO
 779 struct soundhw {
 780     const char *name;
 781     const char *descr;
 782     int enabled;
 783     int isa;
 784     union {
 785         int (*init_isa) (ISABus *bus);
 786         int (*init_pci) (PCIBus *bus);
 787     } init;
 788 };
 789
 790 static struct soundhw soundhw[] = {
 791 #ifdef HAS_AUDIO_CHOICE
 792 #ifdef CONFIG_PCSPK
 793     {
 794         "pcspk",
 795         "PC speaker",
 796         0,
 797         1,
 798         { .init_isa = pcspk_audio_init }
 799     },
 800 #endif
 801
 802 #ifdef CONFIG_SB16
 803     {
 804         "sb16",
 805         "Creative Sound Blaster 16",
 806         0,
 807         1,
 808         { .init_isa = SB16_init }
 809     },
 810 #endif
 811
 812 #ifdef CONFIG_CS4231A
 813     {
 814         "cs4231a",
 815         "CS4231A",
 816         0,
 817         1,
 818         { .init_isa = cs4231a_init }
 819     },
 820 #endif
 821
 822 #ifdef CONFIG_ADLIB
 823     {
 824         "adlib",
 825 #ifdef HAS_YMF262
 826         "Yamaha YMF262 (OPL3)",
 827 #else
 828         "Yamaha YM3812 (OPL2)",
 829 #endif
 830         0,
 831         1,
 832         { .init_isa = Adlib_init }
 833     },
 834 #endif
 835
 836 #ifdef CONFIG_GUS
 837     {
 838         "gus",
 839         "Gravis Ultrasound GF1",
 840         0,
 841         1,
 842         { .init_isa = GUS_init }
 843     },
 844 #endif
 845
 846 #ifdef CONFIG_AC97
 847     {
 848         "ac97",
 849         "Intel 82801AA AC97 Audio",
 850         0,
 851         0,
 852         { .init_pci = ac97_init }
 853     },
 854 #endif
 855
 856 #ifdef CONFIG_ES1370
 857     {
 858         "es1370",
 859         "ENSONIQ AudioPCI ES1370",
 860         0,
 861         0,
 862         { .init_pci = es1370_init }
 863     },
 864 #endif
 865
 866 #ifdef CONFIG_HDA
 867     {
 868         "hda",
 869         "Intel HD Audio",
 870         0,
 871         0,
 872         { .init_pci = intel_hda_and_codec_init }
 873     },
 874 #endif
 875
 876 #endif /* HAS_AUDIO_CHOICE */
 877
 878     { NULL, NULL, 0, 0, { NULL } }
 879 };
 880
 881 void select_soundhw(const char *optarg)
 882 {
 883     struct soundhw *c;
 884
 885     if (is_help_option(optarg)) {
 886     show_valid_cards:
 887
 888         printf("Valid sound card names (comma separated):\n");
 889         for (c = soundhw; c->name; ++c) {
 890             printf ("%-11s %s\n", c->name, c->descr);
 891         }
 892         printf("\n-soundhw all will enable all of the above\n");
 893         exit(!is_help_option(optarg));
 894     }
 895     else {
 896         size_t l;
 897         const char *p;
 898         char *e;
 899         int bad_card = 0;
 900
 901         if (!strcmp(optarg, "all")) {
 902             for (c = soundhw; c->name; ++c) {
 903                 c->enabled = 1;
 904             }
 905             return;
 906         }
 907
 908         p = optarg;
 909         while (*p) {
 910             e = strchr(p, ',');
 911             l = !e ? strlen(p) : (size_t) (e - p);
 912
 913             for (c = soundhw; c->name; ++c) {
 914                 if (!strncmp(c->name, p, l) && !c->name[l]) {
 915                     c->enabled = 1;
 916                     break;
 917                 }
 918             }
 919
 920             if (!c->name) {
 921                 if (l > 80) {
 922                     fprintf(stderr,
 923                             "Unknown sound card name (too big to show)\n");
 924                 }
 925                 else {
 926                     fprintf(stderr, "Unknown sound card name `%.*s'\n",
 927                             (int) l, p);
 928                 }
 929                 bad_card = 1;
 930             }
 931             p += l + (e != NULL);
 932         }
 933
 934         if (bad_card) {
 935             goto show_valid_cards;
 936         }
 937     }
 938 }
 939
 940 void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
 941 {
 942     struct soundhw *c;
 943
 944     for (c = soundhw; c->name; ++c) {
 945         if (c->enabled) {
 946             if (c->isa) {
 947                 if (isa_bus) {
 948                     c->init.init_isa(isa_bus);
 949                 }
 950             } else {
 951                 if (pci_bus) {
 952                     c->init.init_pci(pci_bus);
 953                 }
 954             }
 955         }
 956     }
 957 }
 958 #else
 959 void select_soundhw(const char *optarg)
 960 {
 961 }
 962 void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
 963 {
 964 }
 965 #endif
 966
 967 int qemu_uuid_parse(const char *str, uint8_t *uuid)
 968 {
 969     int ret;
 970
 971     if (strlen(str) != 36) {
 972         return -1;
 973     }
 974
 975     ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
 976                  &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
 977                  &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14],
 978                  &uuid[15]);
 979
 980     if (ret != 16) {
 981         return -1;
 982     }
 983 #ifdef TARGET_I386
 984     smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
 985 #endif
 986     return 0;
 987 }
 988
 989 void do_acpitable_option(const char *optarg)
 990 {
 991 #ifdef TARGET_I386
 992     if (acpi_table_add(optarg) < 0) {
 993         fprintf(stderr, "Wrong acpi table provided\n");
 994         exit(1);
 995     }
 996 #endif
 997 }
 998
 999 void do_smbios_option(const char *optarg)
1000 {
1001 #ifdef TARGET_I386
1002     if (smbios_entry_add(optarg) < 0) {
1003         fprintf(stderr, "Wrong smbios provided\n");
1004         exit(1);
1005     }
1006 #endif
1007 }
1008
1009 void cpudef_init(void)
1010 {
1011 #if defined(cpudef_setup)
1012     cpudef_setup(); /* parse cpu definitions in target config file */
1013 #endif
1014 }
1015
1016 int audio_available(void)
1017 {
1018 #ifdef HAS_AUDIO
1019     return 1;
1020 #else
1021     return 0;
1022 #endif
1023 }
1024
1025 int tcg_available(void)
1026 {
1027     return 1;
1028 }
1029
1030 int kvm_available(void)
1031 {
1032 #ifdef CONFIG_KVM
1033     return 1;
1034 #else
1035     return 0;
1036 #endif
1037 }
1038
1039 int xen_available(void)
1040 {
1041 #ifdef CONFIG_XEN
1042     return 1;
1043 #else
1044     return 0;
1045 #endif
1046 }