hw/core/qdev-properties.c

   1 #include "qemu/osdep.h"
   2 #include "net/net.h"
   3 #include "hw/qdev.h"
   4 #include "qapi/qmp/qerror.h"
   5 #include "qemu/error-report.h"
   6 #include "sysemu/block-backend.h"
   7 #include "hw/block/block.h"
   8 #include "net/hub.h"
   9 #include "qapi/visitor.h"
  10 #include "sysemu/char.h"
  11
  12 void qdev_prop_set_after_realize(DeviceState *dev, const char *name,
  13                                   Error **errp)
  14 {
  15     if (dev->id) {
  16         error_setg(errp, "Attempt to set property '%s' on device '%s' "
  17                    "(type '%s') after it was realized", name, dev->id,
  18                    object_get_typename(OBJECT(dev)));
  19     } else {
  20         error_setg(errp, "Attempt to set property '%s' on anonymous device "
  21                    "(type '%s') after it was realized", name,
  22                    object_get_typename(OBJECT(dev)));
  23     }
  24 }
  25
  26 void qdev_prop_allow_set_link_before_realize(Object *obj, const char *name,
  27                                              Object *val, Error **errp)
  28 {
  29     DeviceState *dev = DEVICE(obj);
  30
  31     if (dev->realized) {
  32         error_setg(errp, "Attempt to set link property '%s' on device '%s' "
  33                    "(type '%s') after it was realized",
  34                    name, dev->id, object_get_typename(obj));
  35     }
  36 }
  37
  38 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop)
  39 {
  40     void *ptr = dev;
  41     ptr += prop->offset;
  42     return ptr;
  43 }
  44
  45 static void get_enum(Object *obj, Visitor *v, void *opaque,
  46                      const char *name, Error **errp)
  47 {
  48     DeviceState *dev = DEVICE(obj);
  49     Property *prop = opaque;
  50     int *ptr = qdev_get_prop_ptr(dev, prop);
  51
  52     visit_type_enum(v, prop->name, ptr, prop->info->enum_table,
  53                     prop->info->name, errp);
  54 }
  55
  56 static void set_enum(Object *obj, Visitor *v, void *opaque,
  57                      const char *name, Error **errp)
  58 {
  59     DeviceState *dev = DEVICE(obj);
  60     Property *prop = opaque;
  61     int *ptr = qdev_get_prop_ptr(dev, prop);
  62
  63     if (dev->realized) {
  64         qdev_prop_set_after_realize(dev, name, errp);
  65         return;
  66     }
  67
  68     visit_type_enum(v, prop->name, ptr, prop->info->enum_table,
  69                     prop->info->name, errp);
  70 }
  71
  72 /* Bit */
  73
  74 static uint32_t qdev_get_prop_mask(Property *prop)
  75 {
  76     assert(prop->info == &qdev_prop_bit);
  77     return 0x1 << prop->bitnr;
  78 }
  79
  80 static void bit_prop_set(DeviceState *dev, Property *props, bool val)
  81 {
  82     uint32_t *p = qdev_get_prop_ptr(dev, props);
  83     uint32_t mask = qdev_get_prop_mask(props);
  84     if (val) {
  85         *p |= mask;
  86     } else {
  87         *p &= ~mask;
  88     }
  89 }
  90
  91 static void prop_get_bit(Object *obj, Visitor *v, void *opaque,
  92                     const char *name, Error **errp)
  93 {
  94     DeviceState *dev = DEVICE(obj);
  95     Property *prop = opaque;
  96     uint32_t *p = qdev_get_prop_ptr(dev, prop);
  97     bool value = (*p & qdev_get_prop_mask(prop)) != 0;
  98
  99     visit_type_bool(v, name, &value, errp);
 100 }
 101
 102 static void prop_set_bit(Object *obj, Visitor *v, void *opaque,
 103                     const char *name, Error **errp)
 104 {
 105     DeviceState *dev = DEVICE(obj);
 106     Property *prop = opaque;
 107     Error *local_err = NULL;
 108     bool value;
 109
 110     if (dev->realized) {
 111         qdev_prop_set_after_realize(dev, name, errp);
 112         return;
 113     }
 114
 115     visit_type_bool(v, name, &value, &local_err);
 116     if (local_err) {
 117         error_propagate(errp, local_err);
 118         return;
 119     }
 120     bit_prop_set(dev, prop, value);
 121 }
 122
 123 PropertyInfo qdev_prop_bit = {
 124     .name  = "bool",
 125     .description = "on/off",
 126     .get   = prop_get_bit,
 127     .set   = prop_set_bit,
 128 };
 129
 130 /* Bit64 */
 131
 132 static uint64_t qdev_get_prop_mask64(Property *prop)
 133 {
 134     assert(prop->info == &qdev_prop_bit64);
 135     return 0x1ull << prop->bitnr;
 136 }
 137
 138 static void bit64_prop_set(DeviceState *dev, Property *props, bool val)
 139 {
 140     uint64_t *p = qdev_get_prop_ptr(dev, props);
 141     uint64_t mask = qdev_get_prop_mask64(props);
 142     if (val) {
 143         *p |= mask;
 144     } else {
 145         *p &= ~mask;
 146     }
 147 }
 148
 149 static void prop_get_bit64(Object *obj, Visitor *v, void *opaque,
 150                            const char *name, Error **errp)
 151 {
 152     DeviceState *dev = DEVICE(obj);
 153     Property *prop = opaque;
 154     uint64_t *p = qdev_get_prop_ptr(dev, prop);
 155     bool value = (*p & qdev_get_prop_mask64(prop)) != 0;
 156
 157     visit_type_bool(v, name, &value, errp);
 158 }
 159
 160 static void prop_set_bit64(Object *obj, Visitor *v, void *opaque,
 161                            const char *name, Error **errp)
 162 {
 163     DeviceState *dev = DEVICE(obj);
 164     Property *prop = opaque;
 165     Error *local_err = NULL;
 166     bool value;
 167
 168     if (dev->realized) {
 169         qdev_prop_set_after_realize(dev, name, errp);
 170         return;
 171     }
 172
 173     visit_type_bool(v, name, &value, &local_err);
 174     if (local_err) {
 175         error_propagate(errp, local_err);
 176         return;
 177     }
 178     bit64_prop_set(dev, prop, value);
 179 }
 180
 181 PropertyInfo qdev_prop_bit64 = {
 182     .name  = "bool",
 183     .description = "on/off",
 184     .get   = prop_get_bit64,
 185     .set   = prop_set_bit64,
 186 };
 187
 188 /* --- bool --- */
 189
 190 static void get_bool(Object *obj, Visitor *v, void *opaque,
 191                      const char *name, Error **errp)
 192 {
 193     DeviceState *dev = DEVICE(obj);
 194     Property *prop = opaque;
 195     bool *ptr = qdev_get_prop_ptr(dev, prop);
 196
 197     visit_type_bool(v, name, ptr, errp);
 198 }
 199
 200 static void set_bool(Object *obj, Visitor *v, void *opaque,
 201                      const char *name, Error **errp)
 202 {
 203     DeviceState *dev = DEVICE(obj);
 204     Property *prop = opaque;
 205     bool *ptr = qdev_get_prop_ptr(dev, prop);
 206
 207     if (dev->realized) {
 208         qdev_prop_set_after_realize(dev, name, errp);
 209         return;
 210     }
 211
 212     visit_type_bool(v, name, ptr, errp);
 213 }
 214
 215 PropertyInfo qdev_prop_bool = {
 216     .name  = "bool",
 217     .get   = get_bool,
 218     .set   = set_bool,
 219 };
 220
 221 /* --- 8bit integer --- */
 222
 223 static void get_uint8(Object *obj, Visitor *v, void *opaque,
 224                       const char *name, Error **errp)
 225 {
 226     DeviceState *dev = DEVICE(obj);
 227     Property *prop = opaque;
 228     uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
 229
 230     visit_type_uint8(v, name, ptr, errp);
 231 }
 232
 233 static void set_uint8(Object *obj, Visitor *v, void *opaque,
 234                       const char *name, Error **errp)
 235 {
 236     DeviceState *dev = DEVICE(obj);
 237     Property *prop = opaque;
 238     uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
 239
 240     if (dev->realized) {
 241         qdev_prop_set_after_realize(dev, name, errp);
 242         return;
 243     }
 244
 245     visit_type_uint8(v, name, ptr, errp);
 246 }
 247
 248 PropertyInfo qdev_prop_uint8 = {
 249     .name  = "uint8",
 250     .get   = get_uint8,
 251     .set   = set_uint8,
 252 };
 253
 254 /* --- 16bit integer --- */
 255
 256 static void get_uint16(Object *obj, Visitor *v, void *opaque,
 257                        const char *name, Error **errp)
 258 {
 259     DeviceState *dev = DEVICE(obj);
 260     Property *prop = opaque;
 261     uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
 262
 263     visit_type_uint16(v, name, ptr, errp);
 264 }
 265
 266 static void set_uint16(Object *obj, Visitor *v, void *opaque,
 267                        const char *name, Error **errp)
 268 {
 269     DeviceState *dev = DEVICE(obj);
 270     Property *prop = opaque;
 271     uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
 272
 273     if (dev->realized) {
 274         qdev_prop_set_after_realize(dev, name, errp);
 275         return;
 276     }
 277
 278     visit_type_uint16(v, name, ptr, errp);
 279 }
 280
 281 PropertyInfo qdev_prop_uint16 = {
 282     .name  = "uint16",
 283     .get   = get_uint16,
 284     .set   = set_uint16,
 285 };
 286
 287 /* --- 32bit integer --- */
 288
 289 static void get_uint32(Object *obj, Visitor *v, void *opaque,
 290                        const char *name, Error **errp)
 291 {
 292     DeviceState *dev = DEVICE(obj);
 293     Property *prop = opaque;
 294     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 295
 296     visit_type_uint32(v, name, ptr, errp);
 297 }
 298
 299 static void set_uint32(Object *obj, Visitor *v, void *opaque,
 300                        const char *name, Error **errp)
 301 {
 302     DeviceState *dev = DEVICE(obj);
 303     Property *prop = opaque;
 304     uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
 305
 306     if (dev->realized) {
 307         qdev_prop_set_after_realize(dev, name, errp);
 308         return;
 309     }
 310
 311     visit_type_uint32(v, name, ptr, errp);
 312 }
 313
 314 static void get_int32(Object *obj, Visitor *v, void *opaque,
 315                       const char *name, Error **errp)
 316 {
 317     DeviceState *dev = DEVICE(obj);
 318     Property *prop = opaque;
 319     int32_t *ptr = qdev_get_prop_ptr(dev, prop);
 320
 321     visit_type_int32(v, name, ptr, errp);
 322 }
 323
 324 static void set_int32(Object *obj, Visitor *v, void *opaque,
 325                       const char *name, Error **errp)
 326 {
 327     DeviceState *dev = DEVICE(obj);
 328     Property *prop = opaque;
 329     int32_t *ptr = qdev_get_prop_ptr(dev, prop);
 330
 331     if (dev->realized) {
 332         qdev_prop_set_after_realize(dev, name, errp);
 333         return;
 334     }
 335
 336     visit_type_int32(v, name, ptr, errp);
 337 }
 338
 339 PropertyInfo qdev_prop_uint32 = {
 340     .name  = "uint32",
 341     .get   = get_uint32,
 342     .set   = set_uint32,
 343 };
 344
 345 PropertyInfo qdev_prop_int32 = {
 346     .name  = "int32",
 347     .get   = get_int32,
 348     .set   = set_int32,
 349 };
 350
 351 /* --- 64bit integer --- */
 352
 353 static void get_uint64(Object *obj, Visitor *v, void *opaque,
 354                        const char *name, Error **errp)
 355 {
 356     DeviceState *dev = DEVICE(obj);
 357     Property *prop = opaque;
 358     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 359
 360     visit_type_uint64(v, name, ptr, errp);
 361 }
 362
 363 static void set_uint64(Object *obj, Visitor *v, void *opaque,
 364                        const char *name, Error **errp)
 365 {
 366     DeviceState *dev = DEVICE(obj);
 367     Property *prop = opaque;
 368     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 369
 370     if (dev->realized) {
 371         qdev_prop_set_after_realize(dev, name, errp);
 372         return;
 373     }
 374
 375     visit_type_uint64(v, name, ptr, errp);
 376 }
 377
 378 PropertyInfo qdev_prop_uint64 = {
 379     .name  = "uint64",
 380     .get   = get_uint64,
 381     .set   = set_uint64,
 382 };
 383
 384 /* --- string --- */
 385
 386 static void release_string(Object *obj, const char *name, void *opaque)
 387 {
 388     Property *prop = opaque;
 389     g_free(*(char **)qdev_get_prop_ptr(DEVICE(obj), prop));
 390 }
 391
 392 static void get_string(Object *obj, Visitor *v, void *opaque,
 393                        const char *name, Error **errp)
 394 {
 395     DeviceState *dev = DEVICE(obj);
 396     Property *prop = opaque;
 397     char **ptr = qdev_get_prop_ptr(dev, prop);
 398
 399     if (!*ptr) {
 400         char *str = (char *)"";
 401         visit_type_str(v, name, &str, errp);
 402     } else {
 403         visit_type_str(v, name, ptr, errp);
 404     }
 405 }
 406
 407 static void set_string(Object *obj, Visitor *v, void *opaque,
 408                        const char *name, Error **errp)
 409 {
 410     DeviceState *dev = DEVICE(obj);
 411     Property *prop = opaque;
 412     char **ptr = qdev_get_prop_ptr(dev, prop);
 413     Error *local_err = NULL;
 414     char *str;
 415
 416     if (dev->realized) {
 417         qdev_prop_set_after_realize(dev, name, errp);
 418         return;
 419     }
 420
 421     visit_type_str(v, name, &str, &local_err);
 422     if (local_err) {
 423         error_propagate(errp, local_err);
 424         return;
 425     }
 426     g_free(*ptr);
 427     *ptr = str;
 428 }
 429
 430 PropertyInfo qdev_prop_string = {
 431     .name  = "str",
 432     .release = release_string,
 433     .get   = get_string,
 434     .set   = set_string,
 435 };
 436
 437 /* --- pointer --- */
 438
 439 /* Not a proper property, just for dirty hacks.  TODO Remove it!  */
 440 PropertyInfo qdev_prop_ptr = {
 441     .name  = "ptr",
 442 };
 443
 444 /* --- mac address --- */
 445
 446 /*
 447  * accepted syntax versions:
 448  *   01:02:03:04:05:06
 449  *   01-02-03-04-05-06
 450  */
 451 static void get_mac(Object *obj, Visitor *v, void *opaque,
 452                     const char *name, Error **errp)
 453 {
 454     DeviceState *dev = DEVICE(obj);
 455     Property *prop = opaque;
 456     MACAddr *mac = qdev_get_prop_ptr(dev, prop);
 457     char buffer[2 * 6 + 5 + 1];
 458     char *p = buffer;
 459
 460     snprintf(buffer, sizeof(buffer), "%02x:%02x:%02x:%02x:%02x:%02x",
 461              mac->a[0], mac->a[1], mac->a[2],
 462              mac->a[3], mac->a[4], mac->a[5]);
 463
 464     visit_type_str(v, name, &p, errp);
 465 }
 466
 467 static void set_mac(Object *obj, Visitor *v, void *opaque,
 468                     const char *name, Error **errp)
 469 {
 470     DeviceState *dev = DEVICE(obj);
 471     Property *prop = opaque;
 472     MACAddr *mac = qdev_get_prop_ptr(dev, prop);
 473     Error *local_err = NULL;
 474     int i, pos;
 475     char *str, *p;
 476
 477     if (dev->realized) {
 478         qdev_prop_set_after_realize(dev, name, errp);
 479         return;
 480     }
 481
 482     visit_type_str(v, name, &str, &local_err);
 483     if (local_err) {
 484         error_propagate(errp, local_err);
 485         return;
 486     }
 487
 488     for (i = 0, pos = 0; i < 6; i++, pos += 3) {
 489         if (!qemu_isxdigit(str[pos])) {
 490             goto inval;
 491         }
 492         if (!qemu_isxdigit(str[pos+1])) {
 493             goto inval;
 494         }
 495         if (i == 5) {
 496             if (str[pos+2] != '\0') {
 497                 goto inval;
 498             }
 499         } else {
 500             if (str[pos+2] != ':' && str[pos+2] != '-') {
 501                 goto inval;
 502             }
 503         }
 504         mac->a[i] = strtol(str+pos, &p, 16);
 505     }
 506     g_free(str);
 507     return;
 508
 509 inval:
 510     error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
 511     g_free(str);
 512 }
 513
 514 PropertyInfo qdev_prop_macaddr = {
 515     .name  = "str",
 516     .description = "Ethernet 6-byte MAC Address, example: 52:54:00:12:34:56",
 517     .get   = get_mac,
 518     .set   = set_mac,
 519 };
 520
 521 /* --- lost tick policy --- */
 522
 523 QEMU_BUILD_BUG_ON(sizeof(LostTickPolicy) != sizeof(int));
 524
 525 PropertyInfo qdev_prop_losttickpolicy = {
 526     .name  = "LostTickPolicy",
 527     .enum_table  = LostTickPolicy_lookup,
 528     .get   = get_enum,
 529     .set   = set_enum,
 530 };
 531
 532 /* --- BIOS CHS translation */
 533
 534 QEMU_BUILD_BUG_ON(sizeof(BiosAtaTranslation) != sizeof(int));
 535
 536 PropertyInfo qdev_prop_bios_chs_trans = {
 537     .name = "BiosAtaTranslation",
 538     .description = "Logical CHS translation algorithm, "
 539                    "auto/none/lba/large/rechs",
 540     .enum_table = BiosAtaTranslation_lookup,
 541     .get = get_enum,
 542     .set = set_enum,
 543 };
 544
 545 /* --- FDC default drive types */
 546
 547 PropertyInfo qdev_prop_fdc_drive_type = {
 548     .name = "FdcDriveType",
 549     .description = "FDC drive type, "
 550                    "144/288/120/none/auto",
 551     .enum_table = FloppyDriveType_lookup,
 552     .get = get_enum,
 553     .set = set_enum
 554 };
 555
 556 /* --- pci address --- */
 557
 558 /*
 559  * bus-local address, i.e. "$slot" or "$slot.$fn"
 560  */
 561 static void set_pci_devfn(Object *obj, Visitor *v, void *opaque,
 562                           const char *name, Error **errp)
 563 {
 564     DeviceState *dev = DEVICE(obj);
 565     Property *prop = opaque;
 566     int32_t value, *ptr = qdev_get_prop_ptr(dev, prop);
 567     unsigned int slot, fn, n;
 568     Error *local_err = NULL;
 569     char *str;
 570
 571     if (dev->realized) {
 572         qdev_prop_set_after_realize(dev, name, errp);
 573         return;
 574     }
 575
 576     visit_type_str(v, name, &str, &local_err);
 577     if (local_err) {
 578         error_free(local_err);
 579         local_err = NULL;
 580         visit_type_int32(v, name, &value, &local_err);
 581         if (local_err) {
 582             error_propagate(errp, local_err);
 583         } else if (value < -1 || value > 255) {
 584             error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
 585                        name ? name : "null", "pci_devfn");
 586         } else {
 587             *ptr = value;
 588         }
 589         return;
 590     }
 591
 592     if (sscanf(str, "%x.%x%n", &slot, &fn, &n) != 2) {
 593         fn = 0;
 594         if (sscanf(str, "%x%n", &slot, &n) != 1) {
 595             goto invalid;
 596         }
 597     }
 598     if (str[n] != '\0' || fn > 7 || slot > 31) {
 599         goto invalid;
 600     }
 601     *ptr = slot << 3 | fn;
 602     g_free(str);
 603     return;
 604
 605 invalid:
 606     error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
 607     g_free(str);
 608 }
 609
 610 static int print_pci_devfn(DeviceState *dev, Property *prop, char *dest,
 611                            size_t len)
 612 {
 613     int32_t *ptr = qdev_get_prop_ptr(dev, prop);
 614
 615     if (*ptr == -1) {
 616         return snprintf(dest, len, "<unset>");
 617     } else {
 618         return snprintf(dest, len, "%02x.%x", *ptr >> 3, *ptr & 7);
 619     }
 620 }
 621
 622 PropertyInfo qdev_prop_pci_devfn = {
 623     .name  = "int32",
 624     .description = "Slot and optional function number, example: 06.0 or 06",
 625     .print = print_pci_devfn,
 626     .get   = get_int32,
 627     .set   = set_pci_devfn,
 628 };
 629
 630 /* --- blocksize --- */
 631
 632 static void set_blocksize(Object *obj, Visitor *v, void *opaque,
 633                           const char *name, Error **errp)
 634 {
 635     DeviceState *dev = DEVICE(obj);
 636     Property *prop = opaque;
 637     uint16_t value, *ptr = qdev_get_prop_ptr(dev, prop);
 638     Error *local_err = NULL;
 639     const int64_t min = 512;
 640     const int64_t max = 32768;
 641
 642     if (dev->realized) {
 643         qdev_prop_set_after_realize(dev, name, errp);
 644         return;
 645     }
 646
 647     visit_type_uint16(v, name, &value, &local_err);
 648     if (local_err) {
 649         error_propagate(errp, local_err);
 650         return;
 651     }
 652     /* value of 0 means "unset" */
 653     if (value && (value < min || value > max)) {
 654         error_setg(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
 655                    dev->id ? : "", name, (int64_t)value, min, max);
 656         return;
 657     }
 658
 659     /* We rely on power-of-2 blocksizes for bitmasks */
 660     if ((value & (value - 1)) != 0) {
 661         error_setg(errp,
 662                   "Property %s.%s doesn't take value '%" PRId64 "', it's not a power of 2",
 663                   dev->id ?: "", name, (int64_t)value);
 664         return;
 665     }
 666
 667     *ptr = value;
 668 }
 669
 670 PropertyInfo qdev_prop_blocksize = {
 671     .name  = "uint16",
 672     .description = "A power of two between 512 and 32768",
 673     .get   = get_uint16,
 674     .set   = set_blocksize,
 675 };
 676
 677 /* --- pci host address --- */
 678
 679 static void get_pci_host_devaddr(Object *obj, Visitor *v, void *opaque,
 680                                  const char *name, Error **errp)
 681 {
 682     DeviceState *dev = DEVICE(obj);
 683     Property *prop = opaque;
 684     PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop);
 685     char buffer[] = "xxxx:xx:xx.x";
 686     char *p = buffer;
 687     int rc = 0;
 688
 689     rc = snprintf(buffer, sizeof(buffer), "%04x:%02x:%02x.%d",
 690                   addr->domain, addr->bus, addr->slot, addr->function);
 691     assert(rc == sizeof(buffer) - 1);
 692
 693     visit_type_str(v, name, &p, errp);
 694 }
 695
 696 /*
 697  * Parse [<domain>:]<bus>:<slot>.<func>
 698  *   if <domain> is not supplied, it's assumed to be 0.
 699  */
 700 static void set_pci_host_devaddr(Object *obj, Visitor *v, void *opaque,
 701                                  const char *name, Error **errp)
 702 {
 703     DeviceState *dev = DEVICE(obj);
 704     Property *prop = opaque;
 705     PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop);
 706     Error *local_err = NULL;
 707     char *str, *p;
 708     char *e;
 709     unsigned long val;
 710     unsigned long dom = 0, bus = 0;
 711     unsigned int slot = 0, func = 0;
 712
 713     if (dev->realized) {
 714         qdev_prop_set_after_realize(dev, name, errp);
 715         return;
 716     }
 717
 718     visit_type_str(v, name, &str, &local_err);
 719     if (local_err) {
 720         error_propagate(errp, local_err);
 721         return;
 722     }
 723
 724     p = str;
 725     val = strtoul(p, &e, 16);
 726     if (e == p || *e != ':') {
 727         goto inval;
 728     }
 729     bus = val;
 730
 731     p = e + 1;
 732     val = strtoul(p, &e, 16);
 733     if (e == p) {
 734         goto inval;
 735     }
 736     if (*e == ':') {
 737         dom = bus;
 738         bus = val;
 739         p = e + 1;
 740         val = strtoul(p, &e, 16);
 741         if (e == p) {
 742             goto inval;
 743         }
 744     }
 745     slot = val;
 746
 747     if (*e != '.') {
 748         goto inval;
 749     }
 750     p = e + 1;
 751     val = strtoul(p, &e, 10);
 752     if (e == p) {
 753         goto inval;
 754     }
 755     func = val;
 756
 757     if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) {
 758         goto inval;
 759     }
 760
 761     if (*e) {
 762         goto inval;
 763     }
 764
 765     addr->domain = dom;
 766     addr->bus = bus;
 767     addr->slot = slot;
 768     addr->function = func;
 769
 770     g_free(str);
 771     return;
 772
 773 inval:
 774     error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
 775     g_free(str);
 776 }
 777
 778 PropertyInfo qdev_prop_pci_host_devaddr = {
 779     .name = "str",
 780     .description = "Address (bus/device/function) of "
 781                    "the host device, example: 04:10.0",
 782     .get = get_pci_host_devaddr,
 783     .set = set_pci_host_devaddr,
 784 };
 785
 786 /* --- support for array properties --- */
 787
 788 /* Used as an opaque for the object properties we add for each
 789  * array element. Note that the struct Property must be first
 790  * in the struct so that a pointer to this works as the opaque
 791  * for the underlying element's property hooks as well as for
 792  * our own release callback.
 793  */
 794 typedef struct {
 795     struct Property prop;
 796     char *propname;
 797     ObjectPropertyRelease *release;
 798 } ArrayElementProperty;
 799
 800 /* object property release callback for array element properties:
 801  * we call the underlying element's property release hook, and
 802  * then free the memory we allocated when we added the property.
 803  */
 804 static void array_element_release(Object *obj, const char *name, void *opaque)
 805 {
 806     ArrayElementProperty *p = opaque;
 807     if (p->release) {
 808         p->release(obj, name, opaque);
 809     }
 810     g_free(p->propname);
 811     g_free(p);
 812 }
 813
 814 static void set_prop_arraylen(Object *obj, Visitor *v, void *opaque,
 815                               const char *name, Error **errp)
 816 {
 817     /* Setter for the property which defines the length of a
 818      * variable-sized property array. As well as actually setting the
 819      * array-length field in the device struct, we have to create the
 820      * array itself and dynamically add the corresponding properties.
 821      */
 822     DeviceState *dev = DEVICE(obj);
 823     Property *prop = opaque;
 824     uint32_t *alenptr = qdev_get_prop_ptr(dev, prop);
 825     void **arrayptr = (void *)dev + prop->arrayoffset;
 826     Error *local_err = NULL;
 827     void *eltptr;
 828     const char *arrayname;
 829     int i;
 830
 831     if (dev->realized) {
 832         qdev_prop_set_after_realize(dev, name, errp);
 833         return;
 834     }
 835     if (*alenptr) {
 836         error_setg(errp, "array size property %s may not be set more than once",
 837                    name);
 838         return;
 839     }
 840     visit_type_uint32(v, name, alenptr, &local_err);
 841     if (local_err) {
 842         error_propagate(errp, local_err);
 843         return;
 844     }
 845     if (!*alenptr) {
 846         return;
 847     }
 848
 849     /* DEFINE_PROP_ARRAY guarantees that name should start with this prefix;
 850      * strip it off so we can get the name of the array itself.
 851      */
 852     assert(strncmp(name, PROP_ARRAY_LEN_PREFIX,
 853                    strlen(PROP_ARRAY_LEN_PREFIX)) == 0);
 854     arrayname = name + strlen(PROP_ARRAY_LEN_PREFIX);
 855
 856     /* Note that it is the responsibility of the individual device's deinit
 857      * to free the array proper.
 858      */
 859     *arrayptr = eltptr = g_malloc0(*alenptr * prop->arrayfieldsize);
 860     for (i = 0; i < *alenptr; i++, eltptr += prop->arrayfieldsize) {
 861         char *propname = g_strdup_printf("%s[%d]", arrayname, i);
 862         ArrayElementProperty *arrayprop = g_new0(ArrayElementProperty, 1);
 863         arrayprop->release = prop->arrayinfo->release;
 864         arrayprop->propname = propname;
 865         arrayprop->prop.info = prop->arrayinfo;
 866         arrayprop->prop.name = propname;
 867         /* This ugly piece of pointer arithmetic sets up the offset so
 868          * that when the underlying get/set hooks call qdev_get_prop_ptr
 869          * they get the right answer despite the array element not actually
 870          * being inside the device struct.
 871          */
 872         arrayprop->prop.offset = eltptr - (void *)dev;
 873         assert(qdev_get_prop_ptr(dev, &arrayprop->prop) == eltptr);
 874         object_property_add(obj, propname,
 875                             arrayprop->prop.info->name,
 876                             arrayprop->prop.info->get,
 877                             arrayprop->prop.info->set,
 878                             array_element_release,
 879                             arrayprop, &local_err);
 880         if (local_err) {
 881             error_propagate(errp, local_err);
 882             return;
 883         }
 884     }
 885 }
 886
 887 PropertyInfo qdev_prop_arraylen = {
 888     .name = "uint32",
 889     .get = get_uint32,
 890     .set = set_prop_arraylen,
 891 };
 892
 893 /* --- public helpers --- */
 894
 895 static Property *qdev_prop_walk(Property *props, const char *name)
 896 {
 897     if (!props) {
 898         return NULL;
 899     }
 900     while (props->name) {
 901         if (strcmp(props->name, name) == 0) {
 902             return props;
 903         }
 904         props++;
 905     }
 906     return NULL;
 907 }
 908
 909 static Property *qdev_prop_find(DeviceState *dev, const char *name)
 910 {
 911     ObjectClass *class;
 912     Property *prop;
 913
 914     /* device properties */
 915     class = object_get_class(OBJECT(dev));
 916     do {
 917         prop = qdev_prop_walk(DEVICE_CLASS(class)->props, name);
 918         if (prop) {
 919             return prop;
 920         }
 921         class = object_class_get_parent(class);
 922     } while (class != object_class_by_name(TYPE_DEVICE));
 923
 924     return NULL;
 925 }
 926
 927 void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev,
 928                                     Property *prop, const char *value)
 929 {
 930     switch (ret) {
 931     case -EEXIST:
 932         error_setg(errp, "Property '%s.%s' can't take value '%s', it's in use",
 933                   object_get_typename(OBJECT(dev)), prop->name, value);
 934         break;
 935     default:
 936     case -EINVAL:
 937         error_setg(errp, QERR_PROPERTY_VALUE_BAD,
 938                    object_get_typename(OBJECT(dev)), prop->name, value);
 939         break;
 940     case -ENOENT:
 941         error_setg(errp, "Property '%s.%s' can't find value '%s'",
 942                   object_get_typename(OBJECT(dev)), prop->name, value);
 943         break;
 944     case 0:
 945         break;
 946     }
 947 }
 948
 949 void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value)
 950 {
 951     object_property_set_bool(OBJECT(dev), value, name, &error_abort);
 952 }
 953
 954 void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value)
 955 {
 956     object_property_set_int(OBJECT(dev), value, name, &error_abort);
 957 }
 958
 959 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value)
 960 {
 961     object_property_set_int(OBJECT(dev), value, name, &error_abort);
 962 }
 963
 964 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value)
 965 {
 966     object_property_set_int(OBJECT(dev), value, name, &error_abort);
 967 }
 968
 969 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value)
 970 {
 971     object_property_set_int(OBJECT(dev), value, name, &error_abort);
 972 }
 973
 974 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value)
 975 {
 976     object_property_set_int(OBJECT(dev), value, name, &error_abort);
 977 }
 978
 979 void qdev_prop_set_string(DeviceState *dev, const char *name, const char *value)
 980 {
 981     object_property_set_str(OBJECT(dev), value, name, &error_abort);
 982 }
 983
 984 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value)
 985 {
 986     char str[2 * 6 + 5 + 1];
 987     snprintf(str, sizeof(str), "%02x:%02x:%02x:%02x:%02x:%02x",
 988              value[0], value[1], value[2], value[3], value[4], value[5]);
 989
 990     object_property_set_str(OBJECT(dev), str, name, &error_abort);
 991 }
 992
 993 void qdev_prop_set_enum(DeviceState *dev, const char *name, int value)
 994 {
 995     Property *prop;
 996
 997     prop = qdev_prop_find(dev, name);
 998     object_property_set_str(OBJECT(dev), prop->info->enum_table[value],
 999                             name, &error_abort);
1000 }
1001
1002 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value)
1003 {
1004     Property *prop;
1005     void **ptr;
1006
1007     prop = qdev_prop_find(dev, name);
1008     assert(prop && prop->info == &qdev_prop_ptr);
1009     ptr = qdev_get_prop_ptr(dev, prop);
1010     *ptr = value;
1011 }
1012
1013 static QTAILQ_HEAD(, GlobalProperty) global_props =
1014         QTAILQ_HEAD_INITIALIZER(global_props);
1015
1016 void qdev_prop_register_global(GlobalProperty *prop)
1017 {
1018     QTAILQ_INSERT_TAIL(&global_props, prop, next);
1019 }
1020
1021 void qdev_prop_register_global_list(GlobalProperty *props)
1022 {
1023     int i;
1024
1025     for (i = 0; props[i].driver != NULL; i++) {
1026         qdev_prop_register_global(props+i);
1027     }
1028 }
1029
1030 int qdev_prop_check_globals(void)
1031 {
1032     GlobalProperty *prop;
1033     int ret = 0;
1034
1035     QTAILQ_FOREACH(prop, &global_props, next) {
1036         ObjectClass *oc;
1037         DeviceClass *dc;
1038         if (prop->used) {
1039             continue;
1040         }
1041         if (!prop->user_provided) {
1042             continue;
1043         }
1044         oc = object_class_by_name(prop->driver);
1045         oc = object_class_dynamic_cast(oc, TYPE_DEVICE);
1046         if (!oc) {
1047             error_report("Warning: global %s.%s has invalid class name",
1048                        prop->driver, prop->property);
1049             ret = 1;
1050             continue;
1051         }
1052         dc = DEVICE_CLASS(oc);
1053         if (!dc->hotpluggable && !prop->used) {
1054             error_report("Warning: global %s.%s=%s not used",
1055                        prop->driver, prop->property, prop->value);
1056             ret = 1;
1057             continue;
1058         }
1059     }
1060     return ret;
1061 }
1062
1063 static void qdev_prop_set_globals_for_type(DeviceState *dev,
1064                                 const char *typename)
1065 {
1066     GlobalProperty *prop;
1067
1068     QTAILQ_FOREACH(prop, &global_props, next) {
1069         Error *err = NULL;
1070
1071         if (strcmp(typename, prop->driver) != 0) {
1072             continue;
1073         }
1074         prop->used = true;
1075         object_property_parse(OBJECT(dev), prop->value, prop->property, &err);
1076         if (err != NULL) {
1077             assert(prop->user_provided);
1078             error_reportf_err(err, "Warning: global %s.%s=%s ignored: ",
1079                               prop->driver, prop->property, prop->value);
1080             return;
1081         }
1082     }
1083 }
1084
1085 void qdev_prop_set_globals(DeviceState *dev)
1086 {
1087     ObjectClass *class = object_get_class(OBJECT(dev));
1088
1089     do {
1090         qdev_prop_set_globals_for_type(dev, object_class_get_name(class));
1091         class = object_class_get_parent(class);
1092     } while (class);
1093 }
1094
1095 /* --- 64bit unsigned int 'size' type --- */
1096
1097 static void get_size(Object *obj, Visitor *v, void *opaque,
1098                      const char *name, Error **errp)
1099 {
1100     DeviceState *dev = DEVICE(obj);
1101     Property *prop = opaque;
1102     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
1103
1104     visit_type_size(v, name, ptr, errp);
1105 }
1106
1107 static void set_size(Object *obj, Visitor *v, void *opaque,
1108                      const char *name, Error **errp)
1109 {
1110     DeviceState *dev = DEVICE(obj);
1111     Property *prop = opaque;
1112     uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
1113
1114     visit_type_size(v, name, ptr, errp);
1115 }
1116
1117 PropertyInfo qdev_prop_size = {
1118     .name  = "size",
1119     .get = get_size,
1120     .set = set_size,
1121 };