1 #include "qemu/osdep.h" 2 #include "net/net.h" 3 #include "hw/qdev.h" 4 #include "qapi/error.h" 5 #include "hw/pci/pci.h" 6 #include "qapi/qmp/qerror.h" 7 #include "qemu/error-report.h" 8 #include "sysemu/block-backend.h" 9 #include "hw/block/block.h" 10 #include "net/hub.h" 11 #include "qapi/visitor.h" 12 #include "sysemu/char.h" 13 14 void qdev_prop_set_after_realize(DeviceState *dev, const char *name, 15 Error **errp) 16 { 17 if (dev->id) { 18 error_setg(errp, "Attempt to set property '%s' on device '%s' " 19 "(type '%s') after it was realized", name, dev->id, 20 object_get_typename(OBJECT(dev))); 21 } else { 22 error_setg(errp, "Attempt to set property '%s' on anonymous device " 23 "(type '%s') after it was realized", name, 24 object_get_typename(OBJECT(dev))); 25 } 26 } 27 28 void qdev_prop_allow_set_link_before_realize(Object *obj, const char *name, 29 Object *val, Error **errp) 30 { 31 DeviceState *dev = DEVICE(obj); 32 33 if (dev->realized) { 34 error_setg(errp, "Attempt to set link property '%s' on device '%s' " 35 "(type '%s') after it was realized", 36 name, dev->id, object_get_typename(obj)); 37 } 38 } 39 40 void *qdev_get_prop_ptr(DeviceState *dev, Property *prop) 41 { 42 void *ptr = dev; 43 ptr += prop->offset; 44 return ptr; 45 } 46 47 static void get_enum(Object *obj, Visitor *v, const char *name, void *opaque, 48 Error **errp) 49 { 50 DeviceState *dev = DEVICE(obj); 51 Property *prop = opaque; 52 int *ptr = qdev_get_prop_ptr(dev, prop); 53 54 visit_type_enum(v, prop->name, ptr, prop->info->enum_table, errp); 55 } 56 57 static void set_enum(Object *obj, Visitor *v, const char *name, void *opaque, 58 Error **errp) 59 { 60 DeviceState *dev = DEVICE(obj); 61 Property *prop = opaque; 62 int *ptr = qdev_get_prop_ptr(dev, prop); 63 64 if (dev->realized) { 65 qdev_prop_set_after_realize(dev, name, errp); 66 return; 67 } 68 69 visit_type_enum(v, prop->name, ptr, prop->info->enum_table, 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, const char *name, 92 void *opaque, 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, const char *name, 103 void *opaque, 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, const char *name, 150 void *opaque, 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, const char *name, 161 void *opaque, 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, const char *name, void *opaque, 191 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, const char *name, void *opaque, 201 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, const char *name, void *opaque, 224 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, const char *name, void *opaque, 234 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, const char *name, 257 void *opaque, 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, const char *name, 267 void *opaque, 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, const char *name, 290 void *opaque, 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, const char *name, 300 void *opaque, 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, const char *name, void *opaque, 315 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, const char *name, void *opaque, 325 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, const char *name, 354 void *opaque, 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, const char *name, 364 void *opaque, 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, const char *name, 393 void *opaque, 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, const char *name, 408 void *opaque, 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, const char *name, void *opaque, 452 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, const char *name, void *opaque, 468 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 /* --- on/off/auto --- */ 522 523 PropertyInfo qdev_prop_on_off_auto = { 524 .name = "OnOffAuto", 525 .description = "on/off/auto", 526 .enum_table = OnOffAuto_lookup, 527 .get = get_enum, 528 .set = set_enum, 529 }; 530 531 /* --- lost tick policy --- */ 532 533 QEMU_BUILD_BUG_ON(sizeof(LostTickPolicy) != sizeof(int)); 534 535 PropertyInfo qdev_prop_losttickpolicy = { 536 .name = "LostTickPolicy", 537 .enum_table = LostTickPolicy_lookup, 538 .get = get_enum, 539 .set = set_enum, 540 }; 541 542 /* --- BIOS CHS translation */ 543 544 QEMU_BUILD_BUG_ON(sizeof(BiosAtaTranslation) != sizeof(int)); 545 546 PropertyInfo qdev_prop_bios_chs_trans = { 547 .name = "BiosAtaTranslation", 548 .description = "Logical CHS translation algorithm, " 549 "auto/none/lba/large/rechs", 550 .enum_table = BiosAtaTranslation_lookup, 551 .get = get_enum, 552 .set = set_enum, 553 }; 554 555 /* --- FDC default drive types */ 556 557 PropertyInfo qdev_prop_fdc_drive_type = { 558 .name = "FdcDriveType", 559 .description = "FDC drive type, " 560 "144/288/120/none/auto", 561 .enum_table = FloppyDriveType_lookup, 562 .get = get_enum, 563 .set = set_enum 564 }; 565 566 /* --- pci address --- */ 567 568 /* 569 * bus-local address, i.e. "$slot" or "$slot.$fn" 570 */ 571 static void set_pci_devfn(Object *obj, Visitor *v, const char *name, 572 void *opaque, Error **errp) 573 { 574 DeviceState *dev = DEVICE(obj); 575 Property *prop = opaque; 576 int32_t value, *ptr = qdev_get_prop_ptr(dev, prop); 577 unsigned int slot, fn, n; 578 Error *local_err = NULL; 579 char *str; 580 581 if (dev->realized) { 582 qdev_prop_set_after_realize(dev, name, errp); 583 return; 584 } 585 586 visit_type_str(v, name, &str, &local_err); 587 if (local_err) { 588 error_free(local_err); 589 local_err = NULL; 590 visit_type_int32(v, name, &value, &local_err); 591 if (local_err) { 592 error_propagate(errp, local_err); 593 } else if (value < -1 || value > 255) { 594 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, 595 name ? name : "null", "pci_devfn"); 596 } else { 597 *ptr = value; 598 } 599 return; 600 } 601 602 if (sscanf(str, "%x.%x%n", &slot, &fn, &n) != 2) { 603 fn = 0; 604 if (sscanf(str, "%x%n", &slot, &n) != 1) { 605 goto invalid; 606 } 607 } 608 if (str[n] != '\0' || fn > 7 || slot > 31) { 609 goto invalid; 610 } 611 *ptr = slot << 3 | fn; 612 g_free(str); 613 return; 614 615 invalid: 616 error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str); 617 g_free(str); 618 } 619 620 static int print_pci_devfn(DeviceState *dev, Property *prop, char *dest, 621 size_t len) 622 { 623 int32_t *ptr = qdev_get_prop_ptr(dev, prop); 624 625 if (*ptr == -1) { 626 return snprintf(dest, len, "<unset>"); 627 } else { 628 return snprintf(dest, len, "%02x.%x", *ptr >> 3, *ptr & 7); 629 } 630 } 631 632 PropertyInfo qdev_prop_pci_devfn = { 633 .name = "int32", 634 .description = "Slot and optional function number, example: 06.0 or 06", 635 .print = print_pci_devfn, 636 .get = get_int32, 637 .set = set_pci_devfn, 638 }; 639 640 /* --- blocksize --- */ 641 642 static void set_blocksize(Object *obj, Visitor *v, const char *name, 643 void *opaque, Error **errp) 644 { 645 DeviceState *dev = DEVICE(obj); 646 Property *prop = opaque; 647 uint16_t value, *ptr = qdev_get_prop_ptr(dev, prop); 648 Error *local_err = NULL; 649 const int64_t min = 512; 650 const int64_t max = 32768; 651 652 if (dev->realized) { 653 qdev_prop_set_after_realize(dev, name, errp); 654 return; 655 } 656 657 visit_type_uint16(v, name, &value, &local_err); 658 if (local_err) { 659 error_propagate(errp, local_err); 660 return; 661 } 662 /* value of 0 means "unset" */ 663 if (value && (value < min || value > max)) { 664 error_setg(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, 665 dev->id ? : "", name, (int64_t)value, min, max); 666 return; 667 } 668 669 /* We rely on power-of-2 blocksizes for bitmasks */ 670 if ((value & (value - 1)) != 0) { 671 error_setg(errp, 672 "Property %s.%s doesn't take value '%" PRId64 "', it's not a power of 2", 673 dev->id ?: "", name, (int64_t)value); 674 return; 675 } 676 677 *ptr = value; 678 } 679 680 PropertyInfo qdev_prop_blocksize = { 681 .name = "uint16", 682 .description = "A power of two between 512 and 32768", 683 .get = get_uint16, 684 .set = set_blocksize, 685 }; 686 687 /* --- pci host address --- */ 688 689 static void get_pci_host_devaddr(Object *obj, Visitor *v, const char *name, 690 void *opaque, Error **errp) 691 { 692 DeviceState *dev = DEVICE(obj); 693 Property *prop = opaque; 694 PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop); 695 char buffer[] = "xxxx:xx:xx.x"; 696 char *p = buffer; 697 int rc = 0; 698 699 rc = snprintf(buffer, sizeof(buffer), "%04x:%02x:%02x.%d", 700 addr->domain, addr->bus, addr->slot, addr->function); 701 assert(rc == sizeof(buffer) - 1); 702 703 visit_type_str(v, name, &p, errp); 704 } 705 706 /* 707 * Parse [<domain>:]<bus>:<slot>.<func> 708 * if <domain> is not supplied, it's assumed to be 0. 709 */ 710 static void set_pci_host_devaddr(Object *obj, Visitor *v, const char *name, 711 void *opaque, Error **errp) 712 { 713 DeviceState *dev = DEVICE(obj); 714 Property *prop = opaque; 715 PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop); 716 Error *local_err = NULL; 717 char *str, *p; 718 char *e; 719 unsigned long val; 720 unsigned long dom = 0, bus = 0; 721 unsigned int slot = 0, func = 0; 722 723 if (dev->realized) { 724 qdev_prop_set_after_realize(dev, name, errp); 725 return; 726 } 727 728 visit_type_str(v, name, &str, &local_err); 729 if (local_err) { 730 error_propagate(errp, local_err); 731 return; 732 } 733 734 p = str; 735 val = strtoul(p, &e, 16); 736 if (e == p || *e != ':') { 737 goto inval; 738 } 739 bus = val; 740 741 p = e + 1; 742 val = strtoul(p, &e, 16); 743 if (e == p) { 744 goto inval; 745 } 746 if (*e == ':') { 747 dom = bus; 748 bus = val; 749 p = e + 1; 750 val = strtoul(p, &e, 16); 751 if (e == p) { 752 goto inval; 753 } 754 } 755 slot = val; 756 757 if (*e != '.') { 758 goto inval; 759 } 760 p = e + 1; 761 val = strtoul(p, &e, 10); 762 if (e == p) { 763 goto inval; 764 } 765 func = val; 766 767 if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) { 768 goto inval; 769 } 770 771 if (*e) { 772 goto inval; 773 } 774 775 addr->domain = dom; 776 addr->bus = bus; 777 addr->slot = slot; 778 addr->function = func; 779 780 g_free(str); 781 return; 782 783 inval: 784 error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str); 785 g_free(str); 786 } 787 788 PropertyInfo qdev_prop_pci_host_devaddr = { 789 .name = "str", 790 .description = "Address (bus/device/function) of " 791 "the host device, example: 04:10.0", 792 .get = get_pci_host_devaddr, 793 .set = set_pci_host_devaddr, 794 }; 795 796 /* --- support for array properties --- */ 797 798 /* Used as an opaque for the object properties we add for each 799 * array element. Note that the struct Property must be first 800 * in the struct so that a pointer to this works as the opaque 801 * for the underlying element's property hooks as well as for 802 * our own release callback. 803 */ 804 typedef struct { 805 struct Property prop; 806 char *propname; 807 ObjectPropertyRelease *release; 808 } ArrayElementProperty; 809 810 /* object property release callback for array element properties: 811 * we call the underlying element's property release hook, and 812 * then free the memory we allocated when we added the property. 813 */ 814 static void array_element_release(Object *obj, const char *name, void *opaque) 815 { 816 ArrayElementProperty *p = opaque; 817 if (p->release) { 818 p->release(obj, name, opaque); 819 } 820 g_free(p->propname); 821 g_free(p); 822 } 823 824 static void set_prop_arraylen(Object *obj, Visitor *v, const char *name, 825 void *opaque, Error **errp) 826 { 827 /* Setter for the property which defines the length of a 828 * variable-sized property array. As well as actually setting the 829 * array-length field in the device struct, we have to create the 830 * array itself and dynamically add the corresponding properties. 831 */ 832 DeviceState *dev = DEVICE(obj); 833 Property *prop = opaque; 834 uint32_t *alenptr = qdev_get_prop_ptr(dev, prop); 835 void **arrayptr = (void *)dev + prop->arrayoffset; 836 Error *local_err = NULL; 837 void *eltptr; 838 const char *arrayname; 839 int i; 840 841 if (dev->realized) { 842 qdev_prop_set_after_realize(dev, name, errp); 843 return; 844 } 845 if (*alenptr) { 846 error_setg(errp, "array size property %s may not be set more than once", 847 name); 848 return; 849 } 850 visit_type_uint32(v, name, alenptr, &local_err); 851 if (local_err) { 852 error_propagate(errp, local_err); 853 return; 854 } 855 if (!*alenptr) { 856 return; 857 } 858 859 /* DEFINE_PROP_ARRAY guarantees that name should start with this prefix; 860 * strip it off so we can get the name of the array itself. 861 */ 862 assert(strncmp(name, PROP_ARRAY_LEN_PREFIX, 863 strlen(PROP_ARRAY_LEN_PREFIX)) == 0); 864 arrayname = name + strlen(PROP_ARRAY_LEN_PREFIX); 865 866 /* Note that it is the responsibility of the individual device's deinit 867 * to free the array proper. 868 */ 869 *arrayptr = eltptr = g_malloc0(*alenptr * prop->arrayfieldsize); 870 for (i = 0; i < *alenptr; i++, eltptr += prop->arrayfieldsize) { 871 char *propname = g_strdup_printf("%s[%d]", arrayname, i); 872 ArrayElementProperty *arrayprop = g_new0(ArrayElementProperty, 1); 873 arrayprop->release = prop->arrayinfo->release; 874 arrayprop->propname = propname; 875 arrayprop->prop.info = prop->arrayinfo; 876 arrayprop->prop.name = propname; 877 /* This ugly piece of pointer arithmetic sets up the offset so 878 * that when the underlying get/set hooks call qdev_get_prop_ptr 879 * they get the right answer despite the array element not actually 880 * being inside the device struct. 881 */ 882 arrayprop->prop.offset = eltptr - (void *)dev; 883 assert(qdev_get_prop_ptr(dev, &arrayprop->prop) == eltptr); 884 object_property_add(obj, propname, 885 arrayprop->prop.info->name, 886 arrayprop->prop.info->get, 887 arrayprop->prop.info->set, 888 array_element_release, 889 arrayprop, &local_err); 890 if (local_err) { 891 error_propagate(errp, local_err); 892 return; 893 } 894 } 895 } 896 897 PropertyInfo qdev_prop_arraylen = { 898 .name = "uint32", 899 .get = get_uint32, 900 .set = set_prop_arraylen, 901 }; 902 903 /* --- public helpers --- */ 904 905 static Property *qdev_prop_walk(Property *props, const char *name) 906 { 907 if (!props) { 908 return NULL; 909 } 910 while (props->name) { 911 if (strcmp(props->name, name) == 0) { 912 return props; 913 } 914 props++; 915 } 916 return NULL; 917 } 918 919 static Property *qdev_prop_find(DeviceState *dev, const char *name) 920 { 921 ObjectClass *class; 922 Property *prop; 923 924 /* device properties */ 925 class = object_get_class(OBJECT(dev)); 926 do { 927 prop = qdev_prop_walk(DEVICE_CLASS(class)->props, name); 928 if (prop) { 929 return prop; 930 } 931 class = object_class_get_parent(class); 932 } while (class != object_class_by_name(TYPE_DEVICE)); 933 934 return NULL; 935 } 936 937 void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev, 938 Property *prop, const char *value) 939 { 940 switch (ret) { 941 case -EEXIST: 942 error_setg(errp, "Property '%s.%s' can't take value '%s', it's in use", 943 object_get_typename(OBJECT(dev)), prop->name, value); 944 break; 945 default: 946 case -EINVAL: 947 error_setg(errp, QERR_PROPERTY_VALUE_BAD, 948 object_get_typename(OBJECT(dev)), prop->name, value); 949 break; 950 case -ENOENT: 951 error_setg(errp, "Property '%s.%s' can't find value '%s'", 952 object_get_typename(OBJECT(dev)), prop->name, value); 953 break; 954 case 0: 955 break; 956 } 957 } 958 959 void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value) 960 { 961 object_property_set_bool(OBJECT(dev), value, name, &error_abort); 962 } 963 964 void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value) 965 { 966 object_property_set_int(OBJECT(dev), value, name, &error_abort); 967 } 968 969 void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value) 970 { 971 object_property_set_int(OBJECT(dev), value, name, &error_abort); 972 } 973 974 void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value) 975 { 976 object_property_set_int(OBJECT(dev), value, name, &error_abort); 977 } 978 979 void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value) 980 { 981 object_property_set_int(OBJECT(dev), value, name, &error_abort); 982 } 983 984 void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value) 985 { 986 object_property_set_int(OBJECT(dev), value, name, &error_abort); 987 } 988 989 void qdev_prop_set_string(DeviceState *dev, const char *name, const char *value) 990 { 991 object_property_set_str(OBJECT(dev), value, name, &error_abort); 992 } 993 994 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value) 995 { 996 char str[2 * 6 + 5 + 1]; 997 snprintf(str, sizeof(str), "%02x:%02x:%02x:%02x:%02x:%02x", 998 value[0], value[1], value[2], value[3], value[4], value[5]); 999 1000 object_property_set_str(OBJECT(dev), str, name, &error_abort); 1001 } 1002 1003 void qdev_prop_set_enum(DeviceState *dev, const char *name, int value) 1004 { 1005 Property *prop; 1006 1007 prop = qdev_prop_find(dev, name); 1008 object_property_set_str(OBJECT(dev), prop->info->enum_table[value], 1009 name, &error_abort); 1010 } 1011 1012 void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value) 1013 { 1014 Property *prop; 1015 void **ptr; 1016 1017 prop = qdev_prop_find(dev, name); 1018 assert(prop && prop->info == &qdev_prop_ptr); 1019 ptr = qdev_get_prop_ptr(dev, prop); 1020 *ptr = value; 1021 } 1022 1023 static GList *global_props; 1024 1025 void qdev_prop_register_global(GlobalProperty *prop) 1026 { 1027 global_props = g_list_append(global_props, prop); 1028 } 1029 1030 void qdev_prop_register_global_list(GlobalProperty *props) 1031 { 1032 int i; 1033 1034 for (i = 0; props[i].driver != NULL; i++) { 1035 qdev_prop_register_global(props+i); 1036 } 1037 } 1038 1039 int qdev_prop_check_globals(void) 1040 { 1041 GList *l; 1042 int ret = 0; 1043 1044 for (l = global_props; l; l = l->next) { 1045 GlobalProperty *prop = l->data; 1046 ObjectClass *oc; 1047 DeviceClass *dc; 1048 if (prop->used) { 1049 continue; 1050 } 1051 if (!prop->user_provided) { 1052 continue; 1053 } 1054 oc = object_class_by_name(prop->driver); 1055 oc = object_class_dynamic_cast(oc, TYPE_DEVICE); 1056 if (!oc) { 1057 error_report("Warning: global %s.%s has invalid class name", 1058 prop->driver, prop->property); 1059 ret = 1; 1060 continue; 1061 } 1062 dc = DEVICE_CLASS(oc); 1063 if (!dc->hotpluggable && !prop->used) { 1064 error_report("Warning: global %s.%s=%s not used", 1065 prop->driver, prop->property, prop->value); 1066 ret = 1; 1067 continue; 1068 } 1069 } 1070 return ret; 1071 } 1072 1073 static void qdev_prop_set_globals_for_type(DeviceState *dev, 1074 const char *typename) 1075 { 1076 GList *l; 1077 1078 for (l = global_props; l; l = l->next) { 1079 GlobalProperty *prop = l->data; 1080 Error *err = NULL; 1081 1082 if (strcmp(typename, prop->driver) != 0) { 1083 continue; 1084 } 1085 prop->used = true; 1086 object_property_parse(OBJECT(dev), prop->value, prop->property, &err); 1087 if (err != NULL) { 1088 error_prepend(&err, "can't apply global %s.%s=%s: ", 1089 prop->driver, prop->property, prop->value); 1090 if (prop->errp) { 1091 error_propagate(prop->errp, err); 1092 } else { 1093 assert(prop->user_provided); 1094 error_reportf_err(err, "Warning: "); 1095 } 1096 } 1097 } 1098 } 1099 1100 void qdev_prop_set_globals(DeviceState *dev) 1101 { 1102 ObjectClass *class = object_get_class(OBJECT(dev)); 1103 1104 do { 1105 qdev_prop_set_globals_for_type(dev, object_class_get_name(class)); 1106 class = object_class_get_parent(class); 1107 } while (class); 1108 } 1109 1110 /* --- 64bit unsigned int 'size' type --- */ 1111 1112 static void get_size(Object *obj, Visitor *v, const char *name, void *opaque, 1113 Error **errp) 1114 { 1115 DeviceState *dev = DEVICE(obj); 1116 Property *prop = opaque; 1117 uint64_t *ptr = qdev_get_prop_ptr(dev, prop); 1118 1119 visit_type_size(v, name, ptr, errp); 1120 } 1121 1122 static void set_size(Object *obj, Visitor *v, const char *name, void *opaque, 1123 Error **errp) 1124 { 1125 DeviceState *dev = DEVICE(obj); 1126 Property *prop = opaque; 1127 uint64_t *ptr = qdev_get_prop_ptr(dev, prop); 1128 1129 visit_type_size(v, name, ptr, errp); 1130 } 1131 1132 PropertyInfo qdev_prop_size = { 1133 .name = "size", 1134 .get = get_size, 1135 .set = set_size, 1136 }; 1137