hw/qdev-properties.c

   1 #include "net.h"
   2 #include "qdev.h"
   3 #include "qerror.h"
   4
   5 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop)
   6 {
   7     void *ptr = dev;
   8     ptr += prop->offset;
   9     return ptr;
  10 }
  11
  12 static uint32_t qdev_get_prop_mask(Property *prop)
  13 {
  14     assert(prop->info->type == PROP_TYPE_BIT);
  15     return 0x1 << prop->bitnr;
  16 }
  17
  18 static void bit_prop_set(DeviceState *dev, Property *props, bool val)
  19 {
  20     uint32_t *p = qdev_get_prop_ptr(dev, props);
  21     uint32_t mask = qdev_get_prop_mask(props);
  22     if (val)
  23         *p |= mask;
  24     else
  25         *p &= ~mask;
  26 }
  27
  28 static void qdev_prop_cpy(DeviceState *dev, Property *props, void *src)
  29 {
  30     if (props->info->type == PROP_TYPE_BIT) {
  31         bool *defval = src;
  32         bit_prop_set(dev, props, *defval);
  33     } else {
  34         char *dst = qdev_get_prop_ptr(dev, props);
  35         memcpy(dst, src, props->info->size);
  36     }
  37 }
  38
  39 /* Bit */
  40 static int parse_bit(DeviceState *dev, Property *prop, const char *str)
  41 {
  42     if (!strncasecmp(str, "on", 2))
  43         bit_prop_set(dev, prop, true);
  44     else if (!strncasecmp(str, "off", 3))
  45         bit_prop_set(dev, prop, false);
  46     else
  47         return -EINVAL;
  48     return 0;
  49 }
  50
  51 static int print_bit(DeviceState *dev, Property *prop, char *dest, size_t len)
  52 {
  53     uint8_t *p = qdev_get_prop_ptr(dev, prop);
  54     return snprintf(dest, len, (*p & qdev_get_prop_mask(prop)) ? "on" : "off");
  55 }
  56
  57 PropertyInfo qdev_prop_bit = {
  58     .name  = "on/off",
  59     .type  = PROP_TYPE_BIT,
  60     .size  = sizeof(uint32_t),
  61     .parse = parse_bit,
  62     .print = print_bit,
  63 };
  64
  65 /* --- 8bit integer --- */
  66
  67 static int parse_uint8(DeviceState *dev, Property *prop, const char *str)
  68 {
  69     uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
  70     char *end;
  71
  72     /* accept both hex and decimal */
  73     *ptr = strtoul(str, &end, 0);
  74     if ((*end != '\0') || (end == str)) {
  75         return -EINVAL;
  76     }
  77
  78     return 0;
  79 }
  80
  81 static int print_uint8(DeviceState *dev, Property *prop, char *dest, size_t len)
  82 {
  83     uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
  84     return snprintf(dest, len, "%" PRIu8, *ptr);
  85 }
  86
  87 PropertyInfo qdev_prop_uint8 = {
  88     .name  = "uint8",
  89     .type  = PROP_TYPE_UINT8,
  90     .size  = sizeof(uint8_t),
  91     .parse = parse_uint8,
  92     .print = print_uint8,
  93 };
  94
  95 /* --- 16bit integer --- */
  96
  97 static int parse_uint16(DeviceState *dev, Property *prop, const char *str)
  98 {
  99     uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
 100     char *end;
 101
 102     /* accept both hex and decimal */
 103     *ptr = strtoul(str, &end, 0);
 104     if ((*end != '\0') || (end == str)) {
 105         return -EINVAL;
 106     }
 107
 108     return 0;
 109 }
 110
 111 static int print_uint16(DeviceState *dev, Property *prop, char *dest, size_t len)
 112 {
 113     uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
 114     return snprintf(dest, len, "%" PRIu16, *ptr);
 115 }
 116
 117 PropertyInfo qdev_prop_uint16 = {
 118     .name  = "uint16",
 119     .type  = PROP_TYPE_UINT16,
 120     .size  = sizeof(uint16_t),
 121     .parse = parse_uint16,
 122     .print = print_uint16,
 123 };
 124
 125 /* --- 32bit integer --- */
 126
 127 static int parse_uint32(DeviceState *dev, Property *prop, const char *str)
 128 {
 129     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 130     char *end;
 131
 132     /* accept both hex and decimal */
 133     *ptr = strtoul(str, &end, 0);
 134     if ((*end != '\0') || (end == str)) {
 135         return -EINVAL;
 136     }
 137
 138     return 0;
 139 }
 140
 141 static int print_uint32(DeviceState *dev, Property *prop, char *dest, size_t len)
 142 {
 143     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 144     return snprintf(dest, len, "%" PRIu32, *ptr);
 145 }
 146
 147 PropertyInfo qdev_prop_uint32 = {
 148     .name  = "uint32",
 149     .type  = PROP_TYPE_UINT32,
 150     .size  = sizeof(uint32_t),
 151     .parse = parse_uint32,
 152     .print = print_uint32,
 153 };
 154
 155 static int parse_int32(DeviceState *dev, Property *prop, const char *str)
 156 {
 157     int32_t *ptr = qdev_get_prop_ptr(dev, prop);
 158     char *end;
 159
 160     *ptr = strtol(str, &end, 10);
 161     if ((*end != '\0') || (end == str)) {
 162         return -EINVAL;
 163     }
 164
 165     return 0;
 166 }
 167
 168 static int print_int32(DeviceState *dev, Property *prop, char *dest, size_t len)
 169 {
 170     int32_t *ptr = qdev_get_prop_ptr(dev, prop);
 171     return snprintf(dest, len, "%" PRId32, *ptr);
 172 }
 173
 174 PropertyInfo qdev_prop_int32 = {
 175     .name  = "int32",
 176     .type  = PROP_TYPE_INT32,
 177     .size  = sizeof(int32_t),
 178     .parse = parse_int32,
 179     .print = print_int32,
 180 };
 181
 182 /* --- 32bit hex value --- */
 183
 184 static int parse_hex32(DeviceState *dev, Property *prop, const char *str)
 185 {
 186     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 187     char *end;
 188
 189     *ptr = strtoul(str, &end, 16);
 190     if ((*end != '\0') || (end == str)) {
 191         return -EINVAL;
 192     }
 193
 194     return 0;
 195 }
 196
 197 static int print_hex32(DeviceState *dev, Property *prop, char *dest, size_t len)
 198 {
 199     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 200     return snprintf(dest, len, "0x%" PRIx32, *ptr);
 201 }
 202
 203 PropertyInfo qdev_prop_hex32 = {
 204     .name  = "hex32",
 205     .type  = PROP_TYPE_UINT32,
 206     .size  = sizeof(uint32_t),
 207     .parse = parse_hex32,
 208     .print = print_hex32,
 209 };
 210
 211 /* --- 64bit integer --- */
 212
 213 static int parse_uint64(DeviceState *dev, Property *prop, const char *str)
 214 {
 215     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 216     char *end;
 217
 218     /* accept both hex and decimal */
 219     *ptr = strtoull(str, &end, 0);
 220     if ((*end != '\0') || (end == str)) {
 221         return -EINVAL;
 222     }
 223
 224     return 0;
 225 }
 226
 227 static int print_uint64(DeviceState *dev, Property *prop, char *dest, size_t len)
 228 {
 229     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 230     return snprintf(dest, len, "%" PRIu64, *ptr);
 231 }
 232
 233 PropertyInfo qdev_prop_uint64 = {
 234     .name  = "uint64",
 235     .type  = PROP_TYPE_UINT64,
 236     .size  = sizeof(uint64_t),
 237     .parse = parse_uint64,
 238     .print = print_uint64,
 239 };
 240
 241 /* --- 64bit hex value --- */
 242
 243 static int parse_hex64(DeviceState *dev, Property *prop, const char *str)
 244 {
 245     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 246     char *end;
 247
 248     *ptr = strtoull(str, &end, 16);
 249     if ((*end != '\0') || (end == str)) {
 250         return -EINVAL;
 251     }
 252
 253     return 0;
 254 }
 255
 256 static int print_hex64(DeviceState *dev, Property *prop, char *dest, size_t len)
 257 {
 258     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 259     return snprintf(dest, len, "0x%" PRIx64, *ptr);
 260 }
 261
 262 PropertyInfo qdev_prop_hex64 = {
 263     .name  = "hex64",
 264     .type  = PROP_TYPE_UINT64,
 265     .size  = sizeof(uint64_t),
 266     .parse = parse_hex64,
 267     .print = print_hex64,
 268 };
 269
 270 /* --- string --- */
 271
 272 static int parse_string(DeviceState *dev, Property *prop, const char *str)
 273 {
 274     char **ptr = qdev_get_prop_ptr(dev, prop);
 275
 276     if (*ptr)
 277         qemu_free(*ptr);
 278     *ptr = qemu_strdup(str);
 279     return 0;
 280 }
 281
 282 static void free_string(DeviceState *dev, Property *prop)
 283 {
 284     qemu_free(*(char **)qdev_get_prop_ptr(dev, prop));
 285 }
 286
 287 static int print_string(DeviceState *dev, Property *prop, char *dest, size_t len)
 288 {
 289     char **ptr = qdev_get_prop_ptr(dev, prop);
 290     if (!*ptr)
 291         return snprintf(dest, len, "<null>");
 292     return snprintf(dest, len, "\"%s\"", *ptr);
 293 }
 294
 295 PropertyInfo qdev_prop_string = {
 296     .name  = "string",
 297     .type  = PROP_TYPE_STRING,
 298     .size  = sizeof(char*),
 299     .parse = parse_string,
 300     .print = print_string,
 301     .free  = free_string,
 302 };
 303
 304 /* --- drive --- */
 305
 306 static int parse_drive(DeviceState *dev, Property *prop, const char *str)
 307 {
 308     BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
 309     BlockDriverState *bs;
 310
 311     bs = bdrv_find(str);
 312     if (bs == NULL)
 313         return -ENOENT;
 314     if (bdrv_attach(bs, dev) < 0)
 315         return -EEXIST;
 316     *ptr = bs;
 317     return 0;
 318 }
 319
 320 static void free_drive(DeviceState *dev, Property *prop)
 321 {
 322     BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
 323
 324     if (*ptr) {
 325         bdrv_detach(*ptr, dev);
 326         blockdev_auto_del(*ptr);
 327     }
 328 }
 329
 330 static int print_drive(DeviceState *dev, Property *prop, char *dest, size_t len)
 331 {
 332     BlockDriverState **ptr = qdev_get_prop_ptr(dev, prop);
 333     return snprintf(dest, len, "%s",
 334                     *ptr ? bdrv_get_device_name(*ptr) : "<null>");
 335 }
 336
 337 PropertyInfo qdev_prop_drive = {
 338     .name  = "drive",
 339     .type  = PROP_TYPE_DRIVE,
 340     .size  = sizeof(BlockDriverState *),
 341     .parse = parse_drive,
 342     .print = print_drive,
 343     .free  = free_drive,
 344 };
 345
 346 /* --- character device --- */
 347
 348 static int parse_chr(DeviceState *dev, Property *prop, const char *str)
 349 {
 350     CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
 351
 352     *ptr = qemu_chr_find(str);
 353     if (*ptr == NULL)
 354         return -ENOENT;
 355     return 0;
 356 }
 357
 358 static int print_chr(DeviceState *dev, Property *prop, char *dest, size_t len)
 359 {
 360     CharDriverState **ptr = qdev_get_prop_ptr(dev, prop);
 361
 362     if (*ptr && (*ptr)->label) {
 363         return snprintf(dest, len, "%s", (*ptr)->label);
 364     } else {
 365         return snprintf(dest, len, "<null>");
 366     }
 367 }
 368
 369 PropertyInfo qdev_prop_chr = {
 370     .name  = "chr",
 371     .type  = PROP_TYPE_CHR,
 372     .size  = sizeof(CharDriverState*),
 373     .parse = parse_chr,
 374     .print = print_chr,
 375 };
 376
 377 /* --- netdev device --- */
 378
 379 static int parse_netdev(DeviceState *dev, Property *prop, const char *str)
 380 {
 381     VLANClientState **ptr = qdev_get_prop_ptr(dev, prop);
 382
 383     *ptr = qemu_find_netdev(str);
 384     if (*ptr == NULL)
 385         return -ENOENT;
 386     if ((*ptr)->peer) {
 387         return -EEXIST;
 388     }
 389     return 0;
 390 }
 391
 392 static int print_netdev(DeviceState *dev, Property *prop, char *dest, size_t len)
 393 {
 394     VLANClientState **ptr = qdev_get_prop_ptr(dev, prop);
 395
 396     if (*ptr && (*ptr)->name) {
 397         return snprintf(dest, len, "%s", (*ptr)->name);
 398     } else {
 399         return snprintf(dest, len, "<null>");
 400     }
 401 }
 402
 403 PropertyInfo qdev_prop_netdev = {
 404     .name  = "netdev",
 405     .type  = PROP_TYPE_NETDEV,
 406     .size  = sizeof(VLANClientState*),
 407     .parse = parse_netdev,
 408     .print = print_netdev,
 409 };
 410
 411 /* --- vlan --- */
 412
 413 static int parse_vlan(DeviceState *dev, Property *prop, const char *str)
 414 {
 415     VLANState **ptr = qdev_get_prop_ptr(dev, prop);
 416     int id;
 417
 418     if (sscanf(str, "%d", &id) != 1)
 419         return -EINVAL;
 420     *ptr = qemu_find_vlan(id, 1);
 421     if (*ptr == NULL)
 422         return -ENOENT;
 423     return 0;
 424 }
 425
 426 static int print_vlan(DeviceState *dev, Property *prop, char *dest, size_t len)
 427 {
 428     VLANState **ptr = qdev_get_prop_ptr(dev, prop);
 429
 430     if (*ptr) {
 431         return snprintf(dest, len, "%d", (*ptr)->id);
 432     } else {
 433         return snprintf(dest, len, "<null>");
 434     }
 435 }
 436
 437 PropertyInfo qdev_prop_vlan = {
 438     .name  = "vlan",
 439     .type  = PROP_TYPE_VLAN,
 440     .size  = sizeof(VLANClientState*),
 441     .parse = parse_vlan,
 442     .print = print_vlan,
 443 };
 444
 445 /* --- pointer --- */
 446
 447 /* Not a proper property, just for dirty hacks.  TODO Remove it!  */
 448 PropertyInfo qdev_prop_ptr = {
 449     .name  = "ptr",
 450     .type  = PROP_TYPE_PTR,
 451     .size  = sizeof(void*),
 452 };
 453
 454 /* --- mac address --- */
 455
 456 /*
 457  * accepted syntax versions:
 458  *   01:02:03:04:05:06
 459  *   01-02-03-04-05-06
 460  */
 461 static int parse_mac(DeviceState *dev, Property *prop, const char *str)
 462 {
 463     MACAddr *mac = qdev_get_prop_ptr(dev, prop);
 464     int i, pos;
 465     char *p;
 466
 467     for (i = 0, pos = 0; i < 6; i++, pos += 3) {
 468         if (!qemu_isxdigit(str[pos]))
 469             return -EINVAL;
 470         if (!qemu_isxdigit(str[pos+1]))
 471             return -EINVAL;
 472         if (i == 5) {
 473             if (str[pos+2] != '\0')
 474                 return -EINVAL;
 475         } else {
 476             if (str[pos+2] != ':' && str[pos+2] != '-')
 477                 return -EINVAL;
 478         }
 479         mac->a[i] = strtol(str+pos, &p, 16);
 480     }
 481     return 0;
 482 }
 483
 484 static int print_mac(DeviceState *dev, Property *prop, char *dest, size_t len)
 485 {
 486     MACAddr *mac = qdev_get_prop_ptr(dev, prop);
 487
 488     return snprintf(dest, len, "%02x:%02x:%02x:%02x:%02x:%02x",
 489                     mac->a[0], mac->a[1], mac->a[2],
 490                     mac->a[3], mac->a[4], mac->a[5]);
 491 }
 492
 493 PropertyInfo qdev_prop_macaddr = {
 494     .name  = "macaddr",
 495     .type  = PROP_TYPE_MACADDR,
 496     .size  = sizeof(MACAddr),
 497     .parse = parse_mac,
 498     .print = print_mac,
 499 };
 500
 501 /* --- pci address --- */
 502
 503 /*
 504  * bus-local address, i.e. "$slot" or "$slot.$fn"
 505  */
 506 static int parse_pci_devfn(DeviceState *dev, Property *prop, const char *str)
 507 {
 508     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 509     unsigned int slot, fn, n;
 510
 511     if (sscanf(str, "%x.%x%n", &slot, &fn, &n) != 2) {
 512         fn = 0;
 513         if (sscanf(str, "%x%n", &slot, &n) != 1) {
 514             return -EINVAL;
 515         }
 516     }
 517     if (str[n] != '\0')
 518         return -EINVAL;
 519     if (fn > 7)
 520         return -EINVAL;
 521     *ptr = slot << 3 | fn;
 522     return 0;
 523 }
 524
 525 static int print_pci_devfn(DeviceState *dev, Property *prop, char *dest, size_t len)
 526 {
 527     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 528
 529     if (*ptr == -1) {
 530         return snprintf(dest, len, "<unset>");
 531     } else {
 532         return snprintf(dest, len, "%02x.%x", *ptr >> 3, *ptr & 7);
 533     }
 534 }
 535
 536 PropertyInfo qdev_prop_pci_devfn = {
 537     .name  = "pci-devfn",
 538     .type  = PROP_TYPE_UINT32,
 539     .size  = sizeof(uint32_t),
 540     .parse = parse_pci_devfn,
 541     .print = print_pci_devfn,
 542 };
 543
 544 /* --- public helpers --- */
 545
 546 static Property *qdev_prop_walk(Property *props, const char *name)
 547 {
 548     if (!props)
 549         return NULL;
 550     while (props->name) {
 551         if (strcmp(props->name, name) == 0)
 552             return props;
 553         props++;
 554     }
 555     return NULL;
 556 }
 557
 558 static Property *qdev_prop_find(DeviceState *dev, const char *name)
 559 {
 560     Property *prop;
 561
 562     /* device properties */
 563     prop = qdev_prop_walk(dev->info->props, name);
 564     if (prop)
 565         return prop;
 566
 567     /* bus properties */
 568     prop = qdev_prop_walk(dev->parent_bus->info->props, name);
 569     if (prop)
 570         return prop;
 571
 572     return NULL;
 573 }
 574
 575 int qdev_prop_exists(DeviceState *dev, const char *name)
 576 {
 577     return qdev_prop_find(dev, name) ? true : false;
 578 }
 579
 580 int qdev_prop_parse(DeviceState *dev, const char *name, const char *value)
 581 {
 582     Property *prop;
 583     int ret;
 584
 585     prop = qdev_prop_find(dev, name);
 586     /*
 587      * TODO Properties without a parse method are just for dirty
 588      * hacks.  qdev_prop_ptr is the only such PropertyInfo.  It's
 589      * marked for removal.  The test !prop->info->parse should be
 590      * removed along with it.
 591      */
 592     if (!prop || !prop->info->parse) {
 593         qerror_report(QERR_PROPERTY_NOT_FOUND, dev->info->name, name);
 594         return -1;
 595     }
 596     ret = prop->info->parse(dev, prop, value);
 597     if (ret < 0) {
 598         switch (ret) {
 599         case -EEXIST:
 600             qerror_report(QERR_PROPERTY_VALUE_IN_USE,
 601                           dev->info->name, name, value);
 602             break;
 603         default:
 604         case -EINVAL:
 605             qerror_report(QERR_PROPERTY_VALUE_BAD,
 606                           dev->info->name, name, value);
 607             break;
 608         case -ENOENT:
 609             qerror_report(QERR_PROPERTY_VALUE_NOT_FOUND,
 610                           dev->info->name, name, value);
 611             break;
 612         }
 613         return -1;
 614     }
 615     return 0;
 616 }
 617
 618 void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type)
 619 {
 620     Property *prop;
 621
 622     prop = qdev_prop_find(dev, name);
 623     if (!prop) {
 624         fprintf(stderr, "%s: property \"%s.%s\" not found\n",
 625                 __FUNCTION__, dev->info->name, name);
 626         abort();
 627     }
 628     if (prop->info->type != type) {
 629         fprintf(stderr, "%s: property \"%s.%s\" type mismatch\n",
 630                 __FUNCTION__, dev->info->name, name);
 631         abort();
 632     }
 633     qdev_prop_cpy(dev, prop, src);
 634 }
 635
 636 void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value)
 637 {
 638     qdev_prop_set(dev, name, &value, PROP_TYPE_UINT8);
 639 }
 640
 641 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value)
 642 {
 643     qdev_prop_set(dev, name, &value, PROP_TYPE_UINT16);
 644 }
 645
 646 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value)
 647 {
 648     qdev_prop_set(dev, name, &value, PROP_TYPE_UINT32);
 649 }
 650
 651 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value)
 652 {
 653     qdev_prop_set(dev, name, &value, PROP_TYPE_INT32);
 654 }
 655
 656 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value)
 657 {
 658     qdev_prop_set(dev, name, &value, PROP_TYPE_UINT64);
 659 }
 660
 661 void qdev_prop_set_string(DeviceState *dev, const char *name, char *value)
 662 {
 663     qdev_prop_set(dev, name, &value, PROP_TYPE_STRING);
 664 }
 665
 666 int qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value)
 667 {
 668     int res;
 669
 670     res = bdrv_attach(value, dev);
 671     if (res < 0) {
 672         error_report("Can't attach drive %s to %s.%s: %s",
 673                      bdrv_get_device_name(value),
 674                      dev->id ? dev->id : dev->info->name,
 675                      name, strerror(-res));
 676         return -1;
 677     }
 678     qdev_prop_set(dev, name, &value, PROP_TYPE_DRIVE);
 679     return 0;
 680 }
 681
 682 void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, BlockDriverState *value)
 683 {
 684     if (qdev_prop_set_drive(dev, name, value) < 0) {
 685         exit(1);
 686     }
 687 }
 688 void qdev_prop_set_chr(DeviceState *dev, const char *name, CharDriverState *value)
 689 {
 690     qdev_prop_set(dev, name, &value, PROP_TYPE_CHR);
 691 }
 692
 693 void qdev_prop_set_netdev(DeviceState *dev, const char *name, VLANClientState *value)
 694 {
 695     qdev_prop_set(dev, name, &value, PROP_TYPE_NETDEV);
 696 }
 697
 698 void qdev_prop_set_vlan(DeviceState *dev, const char *name, VLANState *value)
 699 {
 700     qdev_prop_set(dev, name, &value, PROP_TYPE_VLAN);
 701 }
 702
 703 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value)
 704 {
 705     qdev_prop_set(dev, name, value, PROP_TYPE_MACADDR);
 706 }
 707
 708 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value)
 709 {
 710     qdev_prop_set(dev, name, &value, PROP_TYPE_PTR);
 711 }
 712
 713 void qdev_prop_set_defaults(DeviceState *dev, Property *props)
 714 {
 715     if (!props)
 716         return;
 717     while (props->name) {
 718         if (props->defval) {
 719             qdev_prop_cpy(dev, props, props->defval);
 720         }
 721         props++;
 722     }
 723 }
 724
 725 static QTAILQ_HEAD(, GlobalProperty) global_props = QTAILQ_HEAD_INITIALIZER(global_props);
 726
 727 static void qdev_prop_register_global(GlobalProperty *prop)
 728 {
 729     QTAILQ_INSERT_TAIL(&global_props, prop, next);
 730 }
 731
 732 void qdev_prop_register_global_list(GlobalProperty *props)
 733 {
 734     int i;
 735
 736     for (i = 0; props[i].driver != NULL; i++) {
 737         qdev_prop_register_global(props+i);
 738     }
 739 }
 740
 741 void qdev_prop_set_globals(DeviceState *dev)
 742 {
 743     GlobalProperty *prop;
 744
 745     QTAILQ_FOREACH(prop, &global_props, next) {
 746         if (strcmp(dev->info->name, prop->driver) != 0 &&
 747             strcmp(dev->info->bus_info->name, prop->driver) != 0) {
 748             continue;
 749         }
 750         if (qdev_prop_parse(dev, prop->property, prop->value) != 0) {
 751             exit(1);
 752         }
 753     }
 754 }
 755
 756 static int qdev_add_one_global(QemuOpts *opts, void *opaque)
 757 {
 758     GlobalProperty *g;
 759
 760     g = qemu_mallocz(sizeof(*g));
 761     g->driver   = qemu_opt_get(opts, "driver");
 762     g->property = qemu_opt_get(opts, "property");
 763     g->value    = qemu_opt_get(opts, "value");
 764     qdev_prop_register_global(g);
 765     return 0;
 766 }
 767
 768 void qemu_add_globals(void)
 769 {
 770     qemu_opts_foreach(&qemu_global_opts, qdev_add_one_global, NULL, 0);
 771 }