arch_init.c 25 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
/*
 * QEMU System Emulator
 *
 * Copyright (c) 2003-2008 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include <stdint.h>
#include <stdarg.h>
26
#include <stdlib.h>
27
#ifndef _WIN32
28
#include <sys/types.h>
29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
#include <sys/mman.h>
#endif
#include "config.h"
#include "monitor.h"
#include "sysemu.h"
#include "arch_init.h"
#include "audio/audio.h"
#include "hw/pc.h"
#include "hw/pci.h"
#include "hw/audiodev.h"
#include "kvm.h"
#include "migration.h"
#include "net.h"
#include "gdbstub.h"
#include "hw/smbios.h"
44
#include "exec-memory.h"
Jan Kiszka's avatar
Jan Kiszka committed
45
#include "hw/pcspk.h"
46
#include "qemu/page_cache.h"
47

Orit Wasserman's avatar
Orit Wasserman committed
48 49 50 51 52 53 54 55
#ifdef DEBUG_ARCH_INIT
#define DPRINTF(fmt, ...) \
    do { fprintf(stdout, "arch_init: " fmt, ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) \
    do { } while (0)
#endif

56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76
#ifdef TARGET_SPARC
int graphic_width = 1024;
int graphic_height = 768;
int graphic_depth = 8;
#else
int graphic_width = 800;
int graphic_height = 600;
int graphic_depth = 15;
#endif


#if defined(TARGET_ALPHA)
#define QEMU_ARCH QEMU_ARCH_ALPHA
#elif defined(TARGET_ARM)
#define QEMU_ARCH QEMU_ARCH_ARM
#elif defined(TARGET_CRIS)
#define QEMU_ARCH QEMU_ARCH_CRIS
#elif defined(TARGET_I386)
#define QEMU_ARCH QEMU_ARCH_I386
#elif defined(TARGET_M68K)
#define QEMU_ARCH QEMU_ARCH_M68K
Michael Walle's avatar
Michael Walle committed
77 78
#elif defined(TARGET_LM32)
#define QEMU_ARCH QEMU_ARCH_LM32
79 80 81 82
#elif defined(TARGET_MICROBLAZE)
#define QEMU_ARCH QEMU_ARCH_MICROBLAZE
#elif defined(TARGET_MIPS)
#define QEMU_ARCH QEMU_ARCH_MIPS
83 84
#elif defined(TARGET_OPENRISC)
#define QEMU_ARCH QEMU_ARCH_OPENRISC
85 86 87 88 89 90 91 92
#elif defined(TARGET_PPC)
#define QEMU_ARCH QEMU_ARCH_PPC
#elif defined(TARGET_S390X)
#define QEMU_ARCH QEMU_ARCH_S390X
#elif defined(TARGET_SH4)
#define QEMU_ARCH QEMU_ARCH_SH4
#elif defined(TARGET_SPARC)
#define QEMU_ARCH QEMU_ARCH_SPARC
Max Filippov's avatar
Max Filippov committed
93 94
#elif defined(TARGET_XTENSA)
#define QEMU_ARCH QEMU_ARCH_XTENSA
95 96 97 98 99 100 101
#endif

const uint32_t arch_type = QEMU_ARCH;

/***********************************************************/
/* ram save/restore */

102 103 104 105 106 107
#define RAM_SAVE_FLAG_FULL     0x01 /* Obsolete, not used anymore */
#define RAM_SAVE_FLAG_COMPRESS 0x02
#define RAM_SAVE_FLAG_MEM_SIZE 0x04
#define RAM_SAVE_FLAG_PAGE     0x08
#define RAM_SAVE_FLAG_EOS      0x10
#define RAM_SAVE_FLAG_CONTINUE 0x20
108
#define RAM_SAVE_FLAG_XBZRLE   0x40
109

Paolo Bonzini's avatar
Paolo Bonzini committed
110 111 112 113 114
#ifdef __ALTIVEC__
#include <altivec.h>
#define VECTYPE        vector unsigned char
#define SPLAT(p)       vec_splat(vec_ld(0, p), 0)
#define ALL_EQ(v1, v2) vec_all_eq(v1, v2)
115 116 117 118
/* altivec.h may redefine the bool macro as vector type.
 * Reset it to POSIX semantics. */
#undef bool
#define bool _Bool
Paolo Bonzini's avatar
Paolo Bonzini committed
119 120 121 122 123 124 125 126 127 128 129
#elif defined __SSE2__
#include <emmintrin.h>
#define VECTYPE        __m128i
#define SPLAT(p)       _mm_set1_epi8(*(p))
#define ALL_EQ(v1, v2) (_mm_movemask_epi8(_mm_cmpeq_epi8(v1, v2)) == 0xFFFF)
#else
#define VECTYPE        unsigned long
#define SPLAT(p)       (*(p) * (~0UL / 255))
#define ALL_EQ(v1, v2) ((v1) == (v2))
#endif

130

131 132
static struct defconfig_file {
    const char *filename;
133 134
    /* Indicates it is an user config file (disabled by -no-user-config) */
    bool userconfig;
135
} default_config_files[] = {
136
    { CONFIG_QEMU_DATADIR "/cpus-" TARGET_ARCH ".conf",  false },
137 138
    { CONFIG_QEMU_CONFDIR "/qemu.conf",                   true },
    { CONFIG_QEMU_CONFDIR "/target-" TARGET_ARCH ".conf", true },
139 140 141 142
    { NULL }, /* end of list */
};


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++) {
149 150 151
        if (!userconfig && f->userconfig) {
            continue;
        }
152 153 154 155
        ret = qemu_read_config_file(f->filename);
        if (ret < 0 && ret != -ENOENT) {
            return ret;
        }
156
    }
157
    
158 159 160
    return 0;
}

Paolo Bonzini's avatar
Paolo Bonzini committed
161
static int is_dup_page(uint8_t *page)
162
{
Paolo Bonzini's avatar
Paolo Bonzini committed
163 164
    VECTYPE *p = (VECTYPE *)page;
    VECTYPE val = SPLAT(page);
165 166
    int i;

Paolo Bonzini's avatar
Paolo Bonzini committed
167 168
    for (i = 0; i < TARGET_PAGE_SIZE / sizeof(VECTYPE); i++) {
        if (!ALL_EQ(val, p[i])) {
169 170 171 172 173 174 175
            return 0;
        }
    }

    return 1;
}

176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193
/* struct contains XBZRLE cache and a static page
   used by the compression */
static struct {
    /* buffer used for XBZRLE encoding */
    uint8_t *encoded_buf;
    /* buffer for storing page content */
    uint8_t *current_buf;
    /* buffer used for XBZRLE decoding */
    uint8_t *decoded_buf;
    /* Cache for XBZRLE */
    PageCache *cache;
} XBZRLE = {
    .encoded_buf = NULL,
    .current_buf = NULL,
    .decoded_buf = NULL,
    .cache = NULL,
};

Orit Wasserman's avatar
Orit Wasserman committed
194 195 196 197 198 199 200 201 202 203 204 205
static void save_block_hdr(QEMUFile *f, RAMBlock *block, ram_addr_t offset,
        int cont, int flag)
{
        qemu_put_be64(f, offset | cont | flag);
        if (!cont) {
                qemu_put_byte(f, strlen(block->idstr));
                qemu_put_buffer(f, (uint8_t *)block->idstr,
                                strlen(block->idstr));
        }

}

206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252
#define ENCODING_FLAG_XBZRLE 0x1

static int save_xbzrle_page(QEMUFile *f, uint8_t *current_data,
                            ram_addr_t current_addr, RAMBlock *block,
                            ram_addr_t offset, int cont)
{
    int encoded_len = 0, bytes_sent = -1;
    uint8_t *prev_cached_page;

    if (!cache_is_cached(XBZRLE.cache, current_addr)) {
        cache_insert(XBZRLE.cache, current_addr,
                     g_memdup(current_data, TARGET_PAGE_SIZE));
        return -1;
    }

    prev_cached_page = get_cached_data(XBZRLE.cache, current_addr);

    /* save current buffer into memory */
    memcpy(XBZRLE.current_buf, current_data, TARGET_PAGE_SIZE);

    /* XBZRLE encoding (if there is no overflow) */
    encoded_len = xbzrle_encode_buffer(prev_cached_page, XBZRLE.current_buf,
                                       TARGET_PAGE_SIZE, XBZRLE.encoded_buf,
                                       TARGET_PAGE_SIZE);
    if (encoded_len == 0) {
        DPRINTF("Skipping unmodified page\n");
        return 0;
    } else if (encoded_len == -1) {
        DPRINTF("Overflow\n");
        /* update data in the cache */
        memcpy(prev_cached_page, current_data, TARGET_PAGE_SIZE);
        return -1;
    }

    /* we need to update the data in the cache, in order to get the same data */
    memcpy(prev_cached_page, XBZRLE.current_buf, TARGET_PAGE_SIZE);

    /* Send XBZRLE based compressed page */
    save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_XBZRLE);
    qemu_put_byte(f, ENCODING_FLAG_XBZRLE);
    qemu_put_be16(f, encoded_len);
    qemu_put_buffer(f, XBZRLE.encoded_buf, encoded_len);
    bytes_sent = encoded_len + 1 + 2;

    return bytes_sent;
}

253 254 255
static RAMBlock *last_block;
static ram_addr_t last_offset;

256 257 258 259 260 261 262 263
/*
 * ram_save_block: Writes a page of memory to the stream f
 *
 * Returns:  0: if the page hasn't changed
 *          -1: if there are no more dirty pages
 *           n: the amount of bytes written in other case
 */

264 265
static int ram_save_block(QEMUFile *f)
{
266 267
    RAMBlock *block = last_block;
    ram_addr_t offset = last_offset;
268
    int bytes_sent = -1;
Avi Kivity's avatar
Avi Kivity committed
269
    MemoryRegion *mr;
270
    ram_addr_t current_addr;
271

272 273 274 275
    if (!block)
        block = QLIST_FIRST(&ram_list.blocks);

    do {
Avi Kivity's avatar
Avi Kivity committed
276
        mr = block->mr;
277 278
        if (memory_region_get_dirty(mr, offset, TARGET_PAGE_SIZE,
                                    DIRTY_MEMORY_MIGRATION)) {
279
            uint8_t *p;
280
            int cont = (block == last_block) ? RAM_SAVE_FLAG_CONTINUE : 0;
281

Avi Kivity's avatar
Avi Kivity committed
282 283
            memory_region_reset_dirty(mr, offset, TARGET_PAGE_SIZE,
                                      DIRTY_MEMORY_MIGRATION);
284

Avi Kivity's avatar
Avi Kivity committed
285
            p = memory_region_get_ram_ptr(mr) + offset;
286

Paolo Bonzini's avatar
Paolo Bonzini committed
287
            if (is_dup_page(p)) {
Orit Wasserman's avatar
Orit Wasserman committed
288
                save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_COMPRESS);
289
                qemu_put_byte(f, *p);
290
                bytes_sent = 1;
291 292 293 294 295 296 297 298 299
            } else if (migrate_use_xbzrle()) {
                current_addr = block->offset + offset;
                bytes_sent = save_xbzrle_page(f, p, current_addr, block,
                                              offset, cont);
                p = get_cached_data(XBZRLE.cache, current_addr);
            }

            /* either we didn't send yet (we may have had XBZRLE overflow) */
            if (bytes_sent == -1) {
Orit Wasserman's avatar
Orit Wasserman committed
300
                save_block_hdr(f, block, offset, cont, RAM_SAVE_FLAG_PAGE);
301
                qemu_put_buffer(f, p, TARGET_PAGE_SIZE);
302
                bytes_sent = TARGET_PAGE_SIZE;
303 304
            }

305 306 307 308
            /* if page is unmodified, continue to the next */
            if (bytes_sent != 0) {
                break;
            }
309
        }
310 311 312 313 314 315 316 317

        offset += TARGET_PAGE_SIZE;
        if (offset >= block->length) {
            offset = 0;
            block = QLIST_NEXT(block, next);
            if (!block)
                block = QLIST_FIRST(&ram_list.blocks);
        }
Avi Kivity's avatar
Avi Kivity committed
318
    } while (block != last_block || offset != last_offset);
319 320 321

    last_block = block;
    last_offset = offset;
322

323
    return bytes_sent;
324 325 326 327 328 329
}

static uint64_t bytes_transferred;

static ram_addr_t ram_save_remaining(void)
{
330
    return ram_list.dirty_pages;
331 332 333 334 335 336 337 338 339 340 341 342 343 344
}

uint64_t ram_bytes_remaining(void)
{
    return ram_save_remaining() * TARGET_PAGE_SIZE;
}

uint64_t ram_bytes_transferred(void)
{
    return bytes_transferred;
}

uint64_t ram_bytes_total(void)
{
345 346 347 348 349 350 351
    RAMBlock *block;
    uint64_t total = 0;

    QLIST_FOREACH(block, &ram_list.blocks, next)
        total += block->length;

    return total;
352 353
}

354 355 356 357
static int block_compar(const void *a, const void *b)
{
    RAMBlock * const *ablock = a;
    RAMBlock * const *bblock = b;
358 359

    return strcmp((*ablock)->idstr, (*bblock)->idstr);
360 361 362 363 364 365 366 367 368 369
}

static void sort_ram_list(void)
{
    RAMBlock *block, *nblock, **blocks;
    int n;
    n = 0;
    QLIST_FOREACH(block, &ram_list.blocks, next) {
        ++n;
    }
370
    blocks = g_malloc(n * sizeof *blocks);
371 372 373 374 375 376 377 378 379
    n = 0;
    QLIST_FOREACH_SAFE(block, &ram_list.blocks, next, nblock) {
        blocks[n++] = block;
        QLIST_REMOVE(block, next);
    }
    qsort(blocks, n, sizeof *blocks, block_compar);
    while (--n >= 0) {
        QLIST_INSERT_HEAD(&ram_list.blocks, blocks[n], next);
    }
380
    g_free(blocks);
381 382
}

Orit Wasserman's avatar
Orit Wasserman committed
383 384 385
static void migration_end(void)
{
    memory_global_dirty_log_stop();
386 387 388 389 390 391 392 393 394

    if (migrate_use_xbzrle()) {
        cache_fini(XBZRLE.cache);
        g_free(XBZRLE.cache);
        g_free(XBZRLE.encoded_buf);
        g_free(XBZRLE.current_buf);
        g_free(XBZRLE.decoded_buf);
        XBZRLE.cache = NULL;
    }
Orit Wasserman's avatar
Orit Wasserman committed
395 396
}

397 398 399 400 401
static void ram_migration_cancel(void *opaque)
{
    migration_end();
}

402 403
#define MAX_WAIT 50 /* ms, half buffered_file limit */

404
static int ram_save_setup(QEMUFile *f, void *opaque)
405 406
{
    ram_addr_t addr;
407
    RAMBlock *block;
408

409 410 411 412
    bytes_transferred = 0;
    last_block = NULL;
    last_offset = 0;
    sort_ram_list();
413

414 415 416 417 418 419 420 421 422 423 424 425
    if (migrate_use_xbzrle()) {
        XBZRLE.cache = cache_init(migrate_xbzrle_cache_size() /
                                  TARGET_PAGE_SIZE,
                                  TARGET_PAGE_SIZE);
        if (!XBZRLE.cache) {
            DPRINTF("Error creating cache\n");
            return -1;
        }
        XBZRLE.encoded_buf = g_malloc0(TARGET_PAGE_SIZE);
        XBZRLE.current_buf = g_malloc(TARGET_PAGE_SIZE);
    }

426 427 428 429 430 431
    /* Make sure all dirty bits are set */
    QLIST_FOREACH(block, &ram_list.blocks, next) {
        for (addr = 0; addr < block->length; addr += TARGET_PAGE_SIZE) {
            if (!memory_region_get_dirty(block->mr, addr, TARGET_PAGE_SIZE,
                                         DIRTY_MEMORY_MIGRATION)) {
                memory_region_set_dirty(block->mr, addr, TARGET_PAGE_SIZE);
432 433
            }
        }
434
    }
435

436
    memory_global_dirty_log_start();
437

438
    qemu_put_be64(f, ram_bytes_total() | RAM_SAVE_FLAG_MEM_SIZE);
439

440 441 442 443
    QLIST_FOREACH(block, &ram_list.blocks, next) {
        qemu_put_byte(f, strlen(block->idstr));
        qemu_put_buffer(f, (uint8_t *)block->idstr, strlen(block->idstr));
        qemu_put_be64(f, block->length);
444 445
    }

446 447 448 449 450
    qemu_put_be64(f, RAM_SAVE_FLAG_EOS);

    return 0;
}

451
static int ram_save_iterate(QEMUFile *f, void *opaque)
452 453 454 455 456
{
    uint64_t bytes_transferred_last;
    double bwidth = 0;
    int ret;
    int i;
457
    uint64_t expected_time;
458

459 460 461
    bytes_transferred_last = bytes_transferred;
    bwidth = qemu_get_clock_ns(rt_clock);

462
    i = 0;
463
    while ((ret = qemu_file_rate_limit(f)) == 0) {
464
        int bytes_sent;
465

466
        bytes_sent = ram_save_block(f);
467 468
        /* no more blocks to sent */
        if (bytes_sent < 0) {
469 470
            break;
        }
471
        bytes_transferred += bytes_sent;
472 473 474 475 476 477 478 479 480 481 482 483 484 485
        /* we want to check in the 1st loop, just in case it was the 1st time
           and we had to sync the dirty bitmap.
           qemu_get_clock_ns() is a bit expensive, so we only check each some
           iterations
        */
        if ((i & 63) == 0) {
            uint64_t t1 = (qemu_get_clock_ns(rt_clock) - bwidth) / 1000000;
            if (t1 > MAX_WAIT) {
                DPRINTF("big wait: " PRIu64 " milliseconds, %d iterations\n",
                        t1, i);
                break;
            }
        }
        i++;
486 487
    }

488 489 490 491
    if (ret < 0) {
        return ret;
    }

492 493 494 495 496 497 498 499 500
    bwidth = qemu_get_clock_ns(rt_clock) - bwidth;
    bwidth = (bytes_transferred - bytes_transferred_last) / bwidth;

    /* if we haven't transferred anything this round, force expected_time to a
     * a very high value, but without crashing */
    if (bwidth == 0) {
        bwidth = 0.000001;
    }

501 502 503 504 505 506 507
    qemu_put_be64(f, RAM_SAVE_FLAG_EOS);

    expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;

    DPRINTF("ram_save_live: expected(" PRIu64 ") <= max(" PRIu64 ")?\n",
            expected_time, migrate_max_downtime());

Juan Quintela's avatar
Juan Quintela committed
508 509 510 511 512 513 514
    if (expected_time <= migrate_max_downtime()) {
        memory_global_sync_dirty_bitmap(get_system_memory());
        expected_time = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;

        return expected_time <= migrate_max_downtime();
    }
    return 0;
515 516 517 518 519 520
}

static int ram_save_complete(QEMUFile *f, void *opaque)
{
    memory_global_sync_dirty_bitmap(get_system_memory());

521
    /* try transferring iterative blocks of memory */
Orit Wasserman's avatar
Orit Wasserman committed
522

523
    /* flush all remaining blocks regardless of rate limiting */
524
    while (true) {
525 526
        int bytes_sent;

527 528 529 530
        bytes_sent = ram_save_block(f);
        /* no more blocks to sent */
        if (bytes_sent < 0) {
            break;
531
        }
532
        bytes_transferred += bytes_sent;
533
    }
534
    memory_global_dirty_log_stop();
535 536 537

    qemu_put_be64(f, RAM_SAVE_FLAG_EOS);

538
    return 0;
539 540
}

541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581
static int load_xbzrle(QEMUFile *f, ram_addr_t addr, void *host)
{
    int ret, rc = 0;
    unsigned int xh_len;
    int xh_flags;

    if (!XBZRLE.decoded_buf) {
        XBZRLE.decoded_buf = g_malloc(TARGET_PAGE_SIZE);
    }

    /* extract RLE header */
    xh_flags = qemu_get_byte(f);
    xh_len = qemu_get_be16(f);

    if (xh_flags != ENCODING_FLAG_XBZRLE) {
        fprintf(stderr, "Failed to load XBZRLE page - wrong compression!\n");
        return -1;
    }

    if (xh_len > TARGET_PAGE_SIZE) {
        fprintf(stderr, "Failed to load XBZRLE page - len overflow!\n");
        return -1;
    }
    /* load data and decode */
    qemu_get_buffer(f, XBZRLE.decoded_buf, xh_len);

    /* decode RLE */
    ret = xbzrle_decode_buffer(XBZRLE.decoded_buf, xh_len, host,
                               TARGET_PAGE_SIZE);
    if (ret == -1) {
        fprintf(stderr, "Failed to load XBZRLE page - decode error!\n");
        rc = -1;
    } else  if (ret > TARGET_PAGE_SIZE) {
        fprintf(stderr, "Failed to load XBZRLE page - size %d exceeds %d!\n",
                ret, TARGET_PAGE_SIZE);
        abort();
    }

    return rc;
}

582 583 584 585 586 587 588 589 590 591 592 593 594 595
static inline void *host_from_stream_offset(QEMUFile *f,
                                            ram_addr_t offset,
                                            int flags)
{
    static RAMBlock *block = NULL;
    char id[256];
    uint8_t len;

    if (flags & RAM_SAVE_FLAG_CONTINUE) {
        if (!block) {
            fprintf(stderr, "Ack, bad migration stream!\n");
            return NULL;
        }

596
        return memory_region_get_ram_ptr(block->mr) + offset;
597 598 599 600 601 602 603 604
    }

    len = qemu_get_byte(f);
    qemu_get_buffer(f, (uint8_t *)id, len);
    id[len] = 0;

    QLIST_FOREACH(block, &ram_list.blocks, next) {
        if (!strncmp(id, block->idstr, sizeof(id)))
605
            return memory_region_get_ram_ptr(block->mr) + offset;
606 607 608 609 610 611
    }

    fprintf(stderr, "Can't find block %s!\n", id);
    return NULL;
}

612
static int ram_load(QEMUFile *f, void *opaque, int version_id)
613 614
{
    ram_addr_t addr;
Orit Wasserman's avatar
Orit Wasserman committed
615
    int flags, ret = 0;
616
    int error;
Orit Wasserman's avatar
Orit Wasserman committed
617 618 619
    static uint64_t seq_iter;

    seq_iter++;
620

621
    if (version_id < 4 || version_id > 4) {
622 623 624 625 626 627 628 629 630 631
        return -EINVAL;
    }

    do {
        addr = qemu_get_be64(f);

        flags = addr & ~TARGET_PAGE_MASK;
        addr &= TARGET_PAGE_MASK;

        if (flags & RAM_SAVE_FLAG_MEM_SIZE) {
632
            if (version_id == 4) {
633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648
                /* Synchronize RAM block list */
                char id[256];
                ram_addr_t length;
                ram_addr_t total_ram_bytes = addr;

                while (total_ram_bytes) {
                    RAMBlock *block;
                    uint8_t len;

                    len = qemu_get_byte(f);
                    qemu_get_buffer(f, (uint8_t *)id, len);
                    id[len] = 0;
                    length = qemu_get_be64(f);

                    QLIST_FOREACH(block, &ram_list.blocks, next) {
                        if (!strncmp(id, block->idstr, sizeof(id))) {
Orit Wasserman's avatar
Orit Wasserman committed
649 650 651 652
                            if (block->length != length) {
                                ret =  -EINVAL;
                                goto done;
                            }
653 654 655 656 657
                            break;
                        }
                    }

                    if (!block) {
658 659
                        fprintf(stderr, "Unknown ramblock \"%s\", cannot "
                                "accept migration\n", id);
Orit Wasserman's avatar
Orit Wasserman committed
660 661
                        ret = -EINVAL;
                        goto done;
662 663 664 665
                    }

                    total_ram_bytes -= length;
                }
666 667 668 669
            }
        }

        if (flags & RAM_SAVE_FLAG_COMPRESS) {
670 671 672
            void *host;
            uint8_t ch;

673
            host = host_from_stream_offset(f, addr, flags);
674 675 676
            if (!host) {
                return -EINVAL;
            }
677 678 679

            ch = qemu_get_byte(f);
            memset(host, ch, TARGET_PAGE_SIZE);
680 681 682
#ifndef _WIN32
            if (ch == 0 &&
                (!kvm_enabled() || kvm_has_sync_mmu())) {
Andreas Färber's avatar
Andreas Färber committed
683
                qemu_madvise(host, TARGET_PAGE_SIZE, QEMU_MADV_DONTNEED);
684 685 686
            }
#endif
        } else if (flags & RAM_SAVE_FLAG_PAGE) {
687 688
            void *host;

689
            host = host_from_stream_offset(f, addr, flags);
690 691 692
            if (!host) {
                return -EINVAL;
            }
693 694

            qemu_get_buffer(f, host, TARGET_PAGE_SIZE);
695 696 697 698 699 700 701 702 703 704 705 706 707
        } else if (flags & RAM_SAVE_FLAG_XBZRLE) {
            if (!migrate_use_xbzrle()) {
                return -EINVAL;
            }
            void *host = host_from_stream_offset(f, addr, flags);
            if (!host) {
                return -EINVAL;
            }

            if (load_xbzrle(f, addr, host) < 0) {
                ret = -EINVAL;
                goto done;
            }
708
        }
709 710
        error = qemu_file_get_error(f);
        if (error) {
Orit Wasserman's avatar
Orit Wasserman committed
711 712
            ret = error;
            goto done;
713 714 715
        }
    } while (!(flags & RAM_SAVE_FLAG_EOS));

Orit Wasserman's avatar
Orit Wasserman committed
716 717 718 719
done:
    DPRINTF("Completed load of VM with exit code %d seq iteration " PRIu64 "\n",
            ret, seq_iter);
    return ret;
720 721
}

722
SaveVMHandlers savevm_ram_handlers = {
723
    .save_live_setup = ram_save_setup,
724 725
    .save_live_iterate = ram_save_iterate,
    .save_live_complete = ram_save_complete,
726
    .load_state = ram_load,
727
    .cancel = ram_migration_cancel,
728 729
};

730
#ifdef HAS_AUDIO
731 732 733 734 735 736
struct soundhw {
    const char *name;
    const char *descr;
    int enabled;
    int isa;
    union {
737
        int (*init_isa) (ISABus *bus);
738 739 740 741 742
        int (*init_pci) (PCIBus *bus);
    } init;
};

static struct soundhw soundhw[] = {
743
#ifdef HAS_AUDIO_CHOICE
744
#ifdef CONFIG_PCSPK
745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817
    {
        "pcspk",
        "PC speaker",
        0,
        1,
        { .init_isa = pcspk_audio_init }
    },
#endif

#ifdef CONFIG_SB16
    {
        "sb16",
        "Creative Sound Blaster 16",
        0,
        1,
        { .init_isa = SB16_init }
    },
#endif

#ifdef CONFIG_CS4231A
    {
        "cs4231a",
        "CS4231A",
        0,
        1,
        { .init_isa = cs4231a_init }
    },
#endif

#ifdef CONFIG_ADLIB
    {
        "adlib",
#ifdef HAS_YMF262
        "Yamaha YMF262 (OPL3)",
#else
        "Yamaha YM3812 (OPL2)",
#endif
        0,
        1,
        { .init_isa = Adlib_init }
    },
#endif

#ifdef CONFIG_GUS
    {
        "gus",
        "Gravis Ultrasound GF1",
        0,
        1,
        { .init_isa = GUS_init }
    },
#endif

#ifdef CONFIG_AC97
    {
        "ac97",
        "Intel 82801AA AC97 Audio",
        0,
        0,
        { .init_pci = ac97_init }
    },
#endif

#ifdef CONFIG_ES1370
    {
        "es1370",
        "ENSONIQ AudioPCI ES1370",
        0,
        0,
        { .init_pci = es1370_init }
    },
#endif

818 819 820 821 822 823 824 825 826 827
#ifdef CONFIG_HDA
    {
        "hda",
        "Intel HD Audio",
        0,
        0,
        { .init_pci = intel_hda_and_codec_init }
    },
#endif

828 829 830 831 832 833 834 835 836
#endif /* HAS_AUDIO_CHOICE */

    { NULL, NULL, 0, 0, { NULL } }
};

void select_soundhw(const char *optarg)
{
    struct soundhw *c;

837
    if (is_help_option(optarg)) {
838 839 840 841 842 843 844
    show_valid_cards:

        printf("Valid sound card names (comma separated):\n");
        for (c = soundhw; c->name; ++c) {
            printf ("%-11s %s\n", c->name, c->descr);
        }
        printf("\n-soundhw all will enable all of the above\n");
845
        exit(!is_help_option(optarg));
846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890
    }
    else {
        size_t l;
        const char *p;
        char *e;
        int bad_card = 0;

        if (!strcmp(optarg, "all")) {
            for (c = soundhw; c->name; ++c) {
                c->enabled = 1;
            }
            return;
        }

        p = optarg;
        while (*p) {
            e = strchr(p, ',');
            l = !e ? strlen(p) : (size_t) (e - p);

            for (c = soundhw; c->name; ++c) {
                if (!strncmp(c->name, p, l) && !c->name[l]) {
                    c->enabled = 1;
                    break;
                }
            }

            if (!c->name) {
                if (l > 80) {
                    fprintf(stderr,
                            "Unknown sound card name (too big to show)\n");
                }
                else {
                    fprintf(stderr, "Unknown sound card name `%.*s'\n",
                            (int) l, p);
                }
                bad_card = 1;
            }
            p += l + (e != NULL);
        }

        if (bad_card) {
            goto show_valid_cards;
        }
    }
}
891

892
void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
893 894 895 896 897 898
{
    struct soundhw *c;

    for (c = soundhw; c->name; ++c) {
        if (c->enabled) {
            if (c->isa) {
899 900
                if (isa_bus) {
                    c->init.init_isa(isa_bus);
901 902 903 904 905 906 907 908 909
                }
            } else {
                if (pci_bus) {
                    c->init.init_pci(pci_bus);
                }
            }
        }
    }
}
910 911 912 913
#else
void select_soundhw(const char *optarg)
{
}
914
void audio_init(ISABus *isa_bus, PCIBus *pci_bus)
915 916
{
}
917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976
#endif

int qemu_uuid_parse(const char *str, uint8_t *uuid)
{
    int ret;

    if (strlen(str) != 36) {
        return -1;
    }

    ret = sscanf(str, UUID_FMT, &uuid[0], &uuid[1], &uuid[2], &uuid[3],
                 &uuid[4], &uuid[5], &uuid[6], &uuid[7], &uuid[8], &uuid[9],
                 &uuid[10], &uuid[11], &uuid[12], &uuid[13], &uuid[14],
                 &uuid[15]);

    if (ret != 16) {
        return -1;
    }
#ifdef TARGET_I386
    smbios_add_field(1, offsetof(struct smbios_type_1, uuid), 16, uuid);
#endif
    return 0;
}

void do_acpitable_option(const char *optarg)
{
#ifdef TARGET_I386
    if (acpi_table_add(optarg) < 0) {
        fprintf(stderr, "Wrong acpi table provided\n");
        exit(1);
    }
#endif
}

void do_smbios_option(const char *optarg)
{
#ifdef TARGET_I386
    if (smbios_entry_add(optarg) < 0) {
        fprintf(stderr, "Wrong smbios provided\n");
        exit(1);
    }
#endif
}

void cpudef_init(void)
{
#if defined(cpudef_setup)
    cpudef_setup(); /* parse cpu definitions in target config file */
#endif
}

int audio_available(void)
{
#ifdef HAS_AUDIO
    return 1;
#else
    return 0;
#endif
}

977 978 979 980 981
int tcg_available(void)
{
    return 1;
}

982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998
int kvm_available(void)
{
#ifdef CONFIG_KVM
    return 1;
#else
    return 0;
#endif
}

int xen_available(void)
{
#ifdef CONFIG_XEN
    return 1;
#else
    return 0;
#endif
}