1 /* 2 * qdev property parsing 3 * (parts specific for qemu-system-*) 4 * 5 * This file is based on code from hw/qdev-properties.c from 6 * commit 074a86fccd185616469dfcdc0e157f438aebba18, 7 * Copyright (c) Gerd Hoffmann <kraxel@redhat.com> and other contributors. 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or later. 10 * See the COPYING file in the top-level directory. 11 */ 12 13 #include "qemu/osdep.h" 14 #include "hw/qdev-properties.h" 15 #include "hw/qdev-properties-system.h" 16 #include "qapi/error.h" 17 #include "qapi/visitor.h" 18 #include "qapi/qapi-types-block.h" 19 #include "qapi/qapi-types-machine.h" 20 #include "qapi/qapi-types-migration.h" 21 #include "qapi/qmp/qerror.h" 22 #include "qemu/ctype.h" 23 #include "qemu/cutils.h" 24 #include "qemu/units.h" 25 #include "qemu/uuid.h" 26 #include "qemu/error-report.h" 27 #include "qdev-prop-internal.h" 28 29 #include "audio/audio.h" 30 #include "chardev/char-fe.h" 31 #include "sysemu/block-backend.h" 32 #include "sysemu/blockdev.h" 33 #include "net/net.h" 34 #include "hw/pci/pci.h" 35 #include "hw/pci/pcie.h" 36 #include "hw/i386/x86.h" 37 #include "util/block-helpers.h" 38 39 static bool check_prop_still_unset(Object *obj, const char *name, 40 const void *old_val, const char *new_val, 41 bool allow_override, Error **errp) 42 { 43 const GlobalProperty *prop = qdev_find_global_prop(obj, name); 44 45 if (!old_val || (!prop && allow_override)) { 46 return true; 47 } 48 49 if (prop) { 50 error_setg(errp, "-global %s.%s=... conflicts with %s=%s", 51 prop->driver, prop->property, name, new_val); 52 } else { 53 /* Error message is vague, but a better one would be hard */ 54 error_setg(errp, "%s=%s conflicts, and override is not implemented", 55 name, new_val); 56 } 57 return false; 58 } 59 60 61 /* --- drive --- */ 62 63 static void get_drive(Object *obj, Visitor *v, const char *name, void *opaque, 64 Error **errp) 65 { 66 Property *prop = opaque; 67 void **ptr = object_field_prop_ptr(obj, prop); 68 const char *value; 69 char *p; 70 71 if (*ptr) { 72 value = blk_name(*ptr); 73 if (!*value) { 74 BlockDriverState *bs = blk_bs(*ptr); 75 if (bs) { 76 value = bdrv_get_node_name(bs); 77 } 78 } 79 } else { 80 value = ""; 81 } 82 83 p = g_strdup(value); 84 visit_type_str(v, name, &p, errp); 85 g_free(p); 86 } 87 88 static void set_drive_helper(Object *obj, Visitor *v, const char *name, 89 void *opaque, bool iothread, Error **errp) 90 { 91 DeviceState *dev = DEVICE(obj); 92 Property *prop = opaque; 93 void **ptr = object_field_prop_ptr(obj, prop); 94 char *str; 95 BlockBackend *blk; 96 bool blk_created = false; 97 int ret; 98 BlockDriverState *bs; 99 AioContext *ctx; 100 101 if (!visit_type_str(v, name, &str, errp)) { 102 return; 103 } 104 105 if (!check_prop_still_unset(obj, name, *ptr, str, true, errp)) { 106 return; 107 } 108 109 if (*ptr) { 110 /* BlockBackend already exists. So, we want to change attached node */ 111 blk = *ptr; 112 ctx = blk_get_aio_context(blk); 113 bs = bdrv_lookup_bs(NULL, str, errp); 114 if (!bs) { 115 return; 116 } 117 118 if (ctx != bdrv_get_aio_context(bs)) { 119 error_setg(errp, "Different aio context is not supported for new " 120 "node"); 121 } 122 123 aio_context_acquire(ctx); 124 blk_replace_bs(blk, bs, errp); 125 aio_context_release(ctx); 126 return; 127 } 128 129 if (!*str) { 130 g_free(str); 131 *ptr = NULL; 132 return; 133 } 134 135 blk = blk_by_name(str); 136 if (!blk) { 137 bs = bdrv_lookup_bs(NULL, str, NULL); 138 if (bs) { 139 /* 140 * If the device supports iothreads, it will make sure to move the 141 * block node to the right AioContext if necessary (or fail if this 142 * isn't possible because of other users). Devices that are not 143 * aware of iothreads require their BlockBackends to be in the main 144 * AioContext. 145 */ 146 ctx = bdrv_get_aio_context(bs); 147 blk = blk_new(iothread ? ctx : qemu_get_aio_context(), 148 0, BLK_PERM_ALL); 149 blk_created = true; 150 151 aio_context_acquire(ctx); 152 ret = blk_insert_bs(blk, bs, errp); 153 aio_context_release(ctx); 154 155 if (ret < 0) { 156 goto fail; 157 } 158 } 159 } 160 if (!blk) { 161 error_setg(errp, "Property '%s.%s' can't find value '%s'", 162 object_get_typename(OBJECT(dev)), name, str); 163 goto fail; 164 } 165 if (blk_attach_dev(blk, dev) < 0) { 166 DriveInfo *dinfo = blk_legacy_dinfo(blk); 167 168 if (dinfo && dinfo->type != IF_NONE) { 169 error_setg(errp, "Drive '%s' is already in use because " 170 "it has been automatically connected to another " 171 "device (did you need 'if=none' in the drive options?)", 172 str); 173 } else { 174 error_setg(errp, "Drive '%s' is already in use by another device", 175 str); 176 } 177 goto fail; 178 } 179 180 *ptr = blk; 181 182 fail: 183 if (blk_created) { 184 /* If we need to keep a reference, blk_attach_dev() took it */ 185 blk_unref(blk); 186 } 187 188 g_free(str); 189 } 190 191 static void set_drive(Object *obj, Visitor *v, const char *name, void *opaque, 192 Error **errp) 193 { 194 set_drive_helper(obj, v, name, opaque, false, errp); 195 } 196 197 static void set_drive_iothread(Object *obj, Visitor *v, const char *name, 198 void *opaque, Error **errp) 199 { 200 set_drive_helper(obj, v, name, opaque, true, errp); 201 } 202 203 static void release_drive(Object *obj, const char *name, void *opaque) 204 { 205 DeviceState *dev = DEVICE(obj); 206 Property *prop = opaque; 207 BlockBackend **ptr = object_field_prop_ptr(obj, prop); 208 209 if (*ptr) { 210 AioContext *ctx = blk_get_aio_context(*ptr); 211 212 aio_context_acquire(ctx); 213 blockdev_auto_del(*ptr); 214 blk_detach_dev(*ptr, dev); 215 aio_context_release(ctx); 216 } 217 } 218 219 const PropertyInfo qdev_prop_drive = { 220 .name = "str", 221 .description = "Node name or ID of a block device to use as a backend", 222 .realized_set_allowed = true, 223 .get = get_drive, 224 .set = set_drive, 225 .release = release_drive, 226 }; 227 228 const PropertyInfo qdev_prop_drive_iothread = { 229 .name = "str", 230 .description = "Node name or ID of a block device to use as a backend", 231 .realized_set_allowed = true, 232 .get = get_drive, 233 .set = set_drive_iothread, 234 .release = release_drive, 235 }; 236 237 /* --- character device --- */ 238 239 static void get_chr(Object *obj, Visitor *v, const char *name, void *opaque, 240 Error **errp) 241 { 242 CharBackend *be = object_field_prop_ptr(obj, opaque); 243 char *p; 244 245 p = g_strdup(be->chr && be->chr->label ? be->chr->label : ""); 246 visit_type_str(v, name, &p, errp); 247 g_free(p); 248 } 249 250 static void set_chr(Object *obj, Visitor *v, const char *name, void *opaque, 251 Error **errp) 252 { 253 Property *prop = opaque; 254 CharBackend *be = object_field_prop_ptr(obj, prop); 255 Chardev *s; 256 char *str; 257 258 if (!visit_type_str(v, name, &str, errp)) { 259 return; 260 } 261 262 /* 263 * TODO Should this really be an error? If no, the old value 264 * needs to be released before we store the new one. 265 */ 266 if (!check_prop_still_unset(obj, name, be->chr, str, false, errp)) { 267 return; 268 } 269 270 if (!*str) { 271 g_free(str); 272 be->chr = NULL; 273 return; 274 } 275 276 s = qemu_chr_find(str); 277 if (s == NULL) { 278 error_setg(errp, "Property '%s.%s' can't find value '%s'", 279 object_get_typename(obj), name, str); 280 } else if (!qemu_chr_fe_init(be, s, errp)) { 281 error_prepend(errp, "Property '%s.%s' can't take value '%s': ", 282 object_get_typename(obj), name, str); 283 } 284 g_free(str); 285 } 286 287 static void release_chr(Object *obj, const char *name, void *opaque) 288 { 289 Property *prop = opaque; 290 CharBackend *be = object_field_prop_ptr(obj, prop); 291 292 qemu_chr_fe_deinit(be, false); 293 } 294 295 const PropertyInfo qdev_prop_chr = { 296 .name = "str", 297 .description = "ID of a chardev to use as a backend", 298 .get = get_chr, 299 .set = set_chr, 300 .release = release_chr, 301 }; 302 303 /* --- mac address --- */ 304 305 /* 306 * accepted syntax versions: 307 * 01:02:03:04:05:06 308 * 01-02-03-04-05-06 309 */ 310 static void get_mac(Object *obj, Visitor *v, const char *name, void *opaque, 311 Error **errp) 312 { 313 Property *prop = opaque; 314 MACAddr *mac = object_field_prop_ptr(obj, prop); 315 char buffer[2 * 6 + 5 + 1]; 316 char *p = buffer; 317 318 snprintf(buffer, sizeof(buffer), "%02x:%02x:%02x:%02x:%02x:%02x", 319 mac->a[0], mac->a[1], mac->a[2], 320 mac->a[3], mac->a[4], mac->a[5]); 321 322 visit_type_str(v, name, &p, errp); 323 } 324 325 static void set_mac(Object *obj, Visitor *v, const char *name, void *opaque, 326 Error **errp) 327 { 328 Property *prop = opaque; 329 MACAddr *mac = object_field_prop_ptr(obj, prop); 330 int i, pos; 331 char *str; 332 const char *p; 333 334 if (!visit_type_str(v, name, &str, errp)) { 335 return; 336 } 337 338 for (i = 0, pos = 0; i < 6; i++, pos += 3) { 339 long val; 340 341 if (!qemu_isxdigit(str[pos])) { 342 goto inval; 343 } 344 if (!qemu_isxdigit(str[pos + 1])) { 345 goto inval; 346 } 347 if (i == 5) { 348 if (str[pos + 2] != '\0') { 349 goto inval; 350 } 351 } else { 352 if (str[pos + 2] != ':' && str[pos + 2] != '-') { 353 goto inval; 354 } 355 } 356 if (qemu_strtol(str + pos, &p, 16, &val) < 0 || val > 0xff) { 357 goto inval; 358 } 359 mac->a[i] = val; 360 } 361 g_free(str); 362 return; 363 364 inval: 365 error_set_from_qdev_prop_error(errp, EINVAL, obj, name, str); 366 g_free(str); 367 } 368 369 const PropertyInfo qdev_prop_macaddr = { 370 .name = "str", 371 .description = "Ethernet 6-byte MAC Address, example: 52:54:00:12:34:56", 372 .get = get_mac, 373 .set = set_mac, 374 }; 375 376 void qdev_prop_set_macaddr(DeviceState *dev, const char *name, 377 const uint8_t *value) 378 { 379 char str[2 * 6 + 5 + 1]; 380 snprintf(str, sizeof(str), "%02x:%02x:%02x:%02x:%02x:%02x", 381 value[0], value[1], value[2], value[3], value[4], value[5]); 382 383 object_property_set_str(OBJECT(dev), name, str, &error_abort); 384 } 385 386 /* --- netdev device --- */ 387 static void get_netdev(Object *obj, Visitor *v, const char *name, 388 void *opaque, Error **errp) 389 { 390 Property *prop = opaque; 391 NICPeers *peers_ptr = object_field_prop_ptr(obj, prop); 392 char *p = g_strdup(peers_ptr->ncs[0] ? peers_ptr->ncs[0]->name : ""); 393 394 visit_type_str(v, name, &p, errp); 395 g_free(p); 396 } 397 398 static void set_netdev(Object *obj, Visitor *v, const char *name, 399 void *opaque, Error **errp) 400 { 401 Property *prop = opaque; 402 NICPeers *peers_ptr = object_field_prop_ptr(obj, prop); 403 NetClientState **ncs = peers_ptr->ncs; 404 NetClientState *peers[MAX_QUEUE_NUM]; 405 int queues, err = 0, i = 0; 406 char *str; 407 408 if (!visit_type_str(v, name, &str, errp)) { 409 return; 410 } 411 412 queues = qemu_find_net_clients_except(str, peers, 413 NET_CLIENT_DRIVER_NIC, 414 MAX_QUEUE_NUM); 415 if (queues == 0) { 416 err = -ENOENT; 417 goto out; 418 } 419 420 if (queues > MAX_QUEUE_NUM) { 421 error_setg(errp, "queues of backend '%s'(%d) exceeds QEMU limitation(%d)", 422 str, queues, MAX_QUEUE_NUM); 423 goto out; 424 } 425 426 for (i = 0; i < queues; i++) { 427 if (peers[i]->peer) { 428 err = -EEXIST; 429 goto out; 430 } 431 432 /* 433 * TODO Should this really be an error? If no, the old value 434 * needs to be released before we store the new one. 435 */ 436 if (!check_prop_still_unset(obj, name, ncs[i], str, false, errp)) { 437 goto out; 438 } 439 440 if (peers[i]->info->check_peer_type) { 441 if (!peers[i]->info->check_peer_type(peers[i], obj->class, errp)) { 442 goto out; 443 } 444 } 445 446 ncs[i] = peers[i]; 447 ncs[i]->queue_index = i; 448 } 449 450 peers_ptr->queues = queues; 451 452 out: 453 error_set_from_qdev_prop_error(errp, err, obj, name, str); 454 g_free(str); 455 } 456 457 const PropertyInfo qdev_prop_netdev = { 458 .name = "str", 459 .description = "ID of a netdev to use as a backend", 460 .get = get_netdev, 461 .set = set_netdev, 462 }; 463 464 465 /* --- audiodev --- */ 466 static void get_audiodev(Object *obj, Visitor *v, const char* name, 467 void *opaque, Error **errp) 468 { 469 Property *prop = opaque; 470 QEMUSoundCard *card = object_field_prop_ptr(obj, prop); 471 char *p = g_strdup(audio_get_id(card)); 472 473 visit_type_str(v, name, &p, errp); 474 g_free(p); 475 } 476 477 static void set_audiodev(Object *obj, Visitor *v, const char* name, 478 void *opaque, Error **errp) 479 { 480 Property *prop = opaque; 481 QEMUSoundCard *card = object_field_prop_ptr(obj, prop); 482 AudioState *state; 483 int err = 0; 484 char *str; 485 486 if (!visit_type_str(v, name, &str, errp)) { 487 return; 488 } 489 490 state = audio_state_by_name(str); 491 492 if (!state) { 493 err = -ENOENT; 494 goto out; 495 } 496 card->state = state; 497 498 out: 499 error_set_from_qdev_prop_error(errp, err, obj, name, str); 500 g_free(str); 501 } 502 503 const PropertyInfo qdev_prop_audiodev = { 504 .name = "str", 505 .description = "ID of an audiodev to use as a backend", 506 /* release done on shutdown */ 507 .get = get_audiodev, 508 .set = set_audiodev, 509 }; 510 511 bool qdev_prop_set_drive_err(DeviceState *dev, const char *name, 512 BlockBackend *value, Error **errp) 513 { 514 const char *ref = ""; 515 516 if (value) { 517 ref = blk_name(value); 518 if (!*ref) { 519 const BlockDriverState *bs = blk_bs(value); 520 if (bs) { 521 ref = bdrv_get_node_name(bs); 522 } 523 } 524 } 525 526 return object_property_set_str(OBJECT(dev), name, ref, errp); 527 } 528 529 void qdev_prop_set_drive(DeviceState *dev, const char *name, 530 BlockBackend *value) 531 { 532 qdev_prop_set_drive_err(dev, name, value, &error_abort); 533 } 534 535 void qdev_prop_set_chr(DeviceState *dev, const char *name, 536 Chardev *value) 537 { 538 assert(!value || value->label); 539 object_property_set_str(OBJECT(dev), name, value ? value->label : "", 540 &error_abort); 541 } 542 543 void qdev_prop_set_netdev(DeviceState *dev, const char *name, 544 NetClientState *value) 545 { 546 assert(!value || value->name); 547 object_property_set_str(OBJECT(dev), name, value ? value->name : "", 548 &error_abort); 549 } 550 551 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd) 552 { 553 qdev_prop_set_macaddr(dev, "mac", nd->macaddr.a); 554 if (nd->netdev) { 555 qdev_prop_set_netdev(dev, "netdev", nd->netdev); 556 } 557 if (nd->nvectors != DEV_NVECTORS_UNSPECIFIED && 558 object_property_find(OBJECT(dev), "vectors")) { 559 qdev_prop_set_uint32(dev, "vectors", nd->nvectors); 560 } 561 nd->instantiated = 1; 562 } 563 564 /* --- lost tick policy --- */ 565 566 static void qdev_propinfo_set_losttickpolicy(Object *obj, Visitor *v, 567 const char *name, void *opaque, 568 Error **errp) 569 { 570 Property *prop = opaque; 571 int *ptr = object_field_prop_ptr(obj, prop); 572 int value; 573 574 if (!visit_type_enum(v, name, &value, prop->info->enum_table, errp)) { 575 return; 576 } 577 578 if (value == LOST_TICK_POLICY_SLEW) { 579 MachineState *ms = MACHINE(qdev_get_machine()); 580 581 if (!object_dynamic_cast(OBJECT(ms), TYPE_X86_MACHINE)) { 582 error_setg(errp, 583 "the 'slew' policy is only available for x86 machines"); 584 return; 585 } 586 } 587 588 *ptr = value; 589 } 590 591 QEMU_BUILD_BUG_ON(sizeof(LostTickPolicy) != sizeof(int)); 592 593 const PropertyInfo qdev_prop_losttickpolicy = { 594 .name = "LostTickPolicy", 595 .enum_table = &LostTickPolicy_lookup, 596 .get = qdev_propinfo_get_enum, 597 .set = qdev_propinfo_set_losttickpolicy, 598 .set_default_value = qdev_propinfo_set_default_value_enum, 599 }; 600 601 /* --- blocksize --- */ 602 603 static void set_blocksize(Object *obj, Visitor *v, const char *name, 604 void *opaque, Error **errp) 605 { 606 DeviceState *dev = DEVICE(obj); 607 Property *prop = opaque; 608 uint32_t *ptr = object_field_prop_ptr(obj, prop); 609 uint64_t value; 610 Error *local_err = NULL; 611 612 if (!visit_type_size(v, name, &value, errp)) { 613 return; 614 } 615 check_block_size(dev->id ? : "", name, value, &local_err); 616 if (local_err) { 617 error_propagate(errp, local_err); 618 return; 619 } 620 *ptr = value; 621 } 622 623 const PropertyInfo qdev_prop_blocksize = { 624 .name = "size", 625 .description = "A power of two between " MIN_BLOCK_SIZE_STR 626 " and " MAX_BLOCK_SIZE_STR, 627 .get = qdev_propinfo_get_size32, 628 .set = set_blocksize, 629 .set_default_value = qdev_propinfo_set_default_value_uint, 630 }; 631 632 /* --- Block device error handling policy --- */ 633 634 QEMU_BUILD_BUG_ON(sizeof(BlockdevOnError) != sizeof(int)); 635 636 const PropertyInfo qdev_prop_blockdev_on_error = { 637 .name = "BlockdevOnError", 638 .description = "Error handling policy, " 639 "report/ignore/enospc/stop/auto", 640 .enum_table = &BlockdevOnError_lookup, 641 .get = qdev_propinfo_get_enum, 642 .set = qdev_propinfo_set_enum, 643 .set_default_value = qdev_propinfo_set_default_value_enum, 644 }; 645 646 /* --- BIOS CHS translation */ 647 648 QEMU_BUILD_BUG_ON(sizeof(BiosAtaTranslation) != sizeof(int)); 649 650 const PropertyInfo qdev_prop_bios_chs_trans = { 651 .name = "BiosAtaTranslation", 652 .description = "Logical CHS translation algorithm, " 653 "auto/none/lba/large/rechs", 654 .enum_table = &BiosAtaTranslation_lookup, 655 .get = qdev_propinfo_get_enum, 656 .set = qdev_propinfo_set_enum, 657 .set_default_value = qdev_propinfo_set_default_value_enum, 658 }; 659 660 /* --- FDC default drive types */ 661 662 const PropertyInfo qdev_prop_fdc_drive_type = { 663 .name = "FdcDriveType", 664 .description = "FDC drive type, " 665 "144/288/120/none/auto", 666 .enum_table = &FloppyDriveType_lookup, 667 .get = qdev_propinfo_get_enum, 668 .set = qdev_propinfo_set_enum, 669 .set_default_value = qdev_propinfo_set_default_value_enum, 670 }; 671 672 /* --- MultiFDCompression --- */ 673 674 const PropertyInfo qdev_prop_multifd_compression = { 675 .name = "MultiFDCompression", 676 .description = "multifd_compression values, " 677 "none/zlib/zstd", 678 .enum_table = &MultiFDCompression_lookup, 679 .get = qdev_propinfo_get_enum, 680 .set = qdev_propinfo_set_enum, 681 .set_default_value = qdev_propinfo_set_default_value_enum, 682 }; 683 684 /* --- Reserved Region --- */ 685 686 /* 687 * Accepted syntax: 688 * <low address>:<high address>:<type> 689 * where low/high addresses are uint64_t in hexadecimal 690 * and type is a non-negative decimal integer 691 */ 692 static void get_reserved_region(Object *obj, Visitor *v, const char *name, 693 void *opaque, Error **errp) 694 { 695 Property *prop = opaque; 696 ReservedRegion *rr = object_field_prop_ptr(obj, prop); 697 char buffer[64]; 698 char *p = buffer; 699 int rc; 700 701 rc = snprintf(buffer, sizeof(buffer), "0x%"PRIx64":0x%"PRIx64":%u", 702 rr->low, rr->high, rr->type); 703 assert(rc < sizeof(buffer)); 704 705 visit_type_str(v, name, &p, errp); 706 } 707 708 static void set_reserved_region(Object *obj, Visitor *v, const char *name, 709 void *opaque, Error **errp) 710 { 711 Property *prop = opaque; 712 ReservedRegion *rr = object_field_prop_ptr(obj, prop); 713 const char *endptr; 714 char *str; 715 int ret; 716 717 if (!visit_type_str(v, name, &str, errp)) { 718 return; 719 } 720 721 ret = qemu_strtou64(str, &endptr, 16, &rr->low); 722 if (ret) { 723 error_setg(errp, "start address of '%s'" 724 " must be a hexadecimal integer", name); 725 goto out; 726 } 727 if (*endptr != ':') { 728 goto separator_error; 729 } 730 731 ret = qemu_strtou64(endptr + 1, &endptr, 16, &rr->high); 732 if (ret) { 733 error_setg(errp, "end address of '%s'" 734 " must be a hexadecimal integer", name); 735 goto out; 736 } 737 if (*endptr != ':') { 738 goto separator_error; 739 } 740 741 ret = qemu_strtoui(endptr + 1, &endptr, 10, &rr->type); 742 if (ret) { 743 error_setg(errp, "type of '%s'" 744 " must be a non-negative decimal integer", name); 745 } 746 goto out; 747 748 separator_error: 749 error_setg(errp, "reserved region fields must be separated with ':'"); 750 out: 751 g_free(str); 752 return; 753 } 754 755 const PropertyInfo qdev_prop_reserved_region = { 756 .name = "reserved_region", 757 .description = "Reserved Region, example: 0xFEE00000:0xFEEFFFFF:0", 758 .get = get_reserved_region, 759 .set = set_reserved_region, 760 }; 761 762 /* --- pci address --- */ 763 764 /* 765 * bus-local address, i.e. "$slot" or "$slot.$fn" 766 */ 767 static void set_pci_devfn(Object *obj, Visitor *v, const char *name, 768 void *opaque, Error **errp) 769 { 770 Property *prop = opaque; 771 int32_t value, *ptr = object_field_prop_ptr(obj, prop); 772 unsigned int slot, fn, n; 773 char *str; 774 775 if (!visit_type_str(v, name, &str, NULL)) { 776 if (!visit_type_int32(v, name, &value, errp)) { 777 return; 778 } 779 if (value < -1 || value > 255) { 780 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, 781 name ? name : "null", "a value between -1 and 255"); 782 return; 783 } 784 *ptr = value; 785 return; 786 } 787 788 if (sscanf(str, "%x.%x%n", &slot, &fn, &n) != 2) { 789 fn = 0; 790 if (sscanf(str, "%x%n", &slot, &n) != 1) { 791 goto invalid; 792 } 793 } 794 if (str[n] != '\0' || fn > 7 || slot > 31) { 795 goto invalid; 796 } 797 *ptr = slot << 3 | fn; 798 g_free(str); 799 return; 800 801 invalid: 802 error_set_from_qdev_prop_error(errp, EINVAL, obj, name, str); 803 g_free(str); 804 } 805 806 static int print_pci_devfn(Object *obj, Property *prop, char *dest, 807 size_t len) 808 { 809 int32_t *ptr = object_field_prop_ptr(obj, prop); 810 811 if (*ptr == -1) { 812 return snprintf(dest, len, "<unset>"); 813 } else { 814 return snprintf(dest, len, "%02x.%x", *ptr >> 3, *ptr & 7); 815 } 816 } 817 818 const PropertyInfo qdev_prop_pci_devfn = { 819 .name = "int32", 820 .description = "Slot and optional function number, example: 06.0 or 06", 821 .print = print_pci_devfn, 822 .get = qdev_propinfo_get_int32, 823 .set = set_pci_devfn, 824 .set_default_value = qdev_propinfo_set_default_value_int, 825 }; 826 827 /* --- pci host address --- */ 828 829 static void get_pci_host_devaddr(Object *obj, Visitor *v, const char *name, 830 void *opaque, Error **errp) 831 { 832 Property *prop = opaque; 833 PCIHostDeviceAddress *addr = object_field_prop_ptr(obj, prop); 834 char buffer[] = "ffff:ff:ff.f"; 835 char *p = buffer; 836 int rc = 0; 837 838 /* 839 * Catch "invalid" device reference from vfio-pci and allow the 840 * default buffer representing the non-existent device to be used. 841 */ 842 if (~addr->domain || ~addr->bus || ~addr->slot || ~addr->function) { 843 rc = snprintf(buffer, sizeof(buffer), "%04x:%02x:%02x.%0d", 844 addr->domain, addr->bus, addr->slot, addr->function); 845 assert(rc == sizeof(buffer) - 1); 846 } 847 848 visit_type_str(v, name, &p, errp); 849 } 850 851 /* 852 * Parse [<domain>:]<bus>:<slot>.<func> 853 * if <domain> is not supplied, it's assumed to be 0. 854 */ 855 static void set_pci_host_devaddr(Object *obj, Visitor *v, const char *name, 856 void *opaque, Error **errp) 857 { 858 Property *prop = opaque; 859 PCIHostDeviceAddress *addr = object_field_prop_ptr(obj, prop); 860 char *str, *p; 861 char *e; 862 unsigned long val; 863 unsigned long dom = 0, bus = 0; 864 unsigned int slot = 0, func = 0; 865 866 if (!visit_type_str(v, name, &str, errp)) { 867 return; 868 } 869 870 p = str; 871 val = strtoul(p, &e, 16); 872 if (e == p || *e != ':') { 873 goto inval; 874 } 875 bus = val; 876 877 p = e + 1; 878 val = strtoul(p, &e, 16); 879 if (e == p) { 880 goto inval; 881 } 882 if (*e == ':') { 883 dom = bus; 884 bus = val; 885 p = e + 1; 886 val = strtoul(p, &e, 16); 887 if (e == p) { 888 goto inval; 889 } 890 } 891 slot = val; 892 893 if (*e != '.') { 894 goto inval; 895 } 896 p = e + 1; 897 val = strtoul(p, &e, 10); 898 if (e == p) { 899 goto inval; 900 } 901 func = val; 902 903 if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) { 904 goto inval; 905 } 906 907 if (*e) { 908 goto inval; 909 } 910 911 addr->domain = dom; 912 addr->bus = bus; 913 addr->slot = slot; 914 addr->function = func; 915 916 g_free(str); 917 return; 918 919 inval: 920 error_set_from_qdev_prop_error(errp, EINVAL, obj, name, str); 921 g_free(str); 922 } 923 924 const PropertyInfo qdev_prop_pci_host_devaddr = { 925 .name = "str", 926 .description = "Address (bus/device/function) of " 927 "the host device, example: 04:10.0", 928 .get = get_pci_host_devaddr, 929 .set = set_pci_host_devaddr, 930 }; 931 932 /* --- OffAutoPCIBAR off/auto/bar0/bar1/bar2/bar3/bar4/bar5 --- */ 933 934 const PropertyInfo qdev_prop_off_auto_pcibar = { 935 .name = "OffAutoPCIBAR", 936 .description = "off/auto/bar0/bar1/bar2/bar3/bar4/bar5", 937 .enum_table = &OffAutoPCIBAR_lookup, 938 .get = qdev_propinfo_get_enum, 939 .set = qdev_propinfo_set_enum, 940 .set_default_value = qdev_propinfo_set_default_value_enum, 941 }; 942 943 /* --- PCIELinkSpeed 2_5/5/8/16 -- */ 944 945 static void get_prop_pcielinkspeed(Object *obj, Visitor *v, const char *name, 946 void *opaque, Error **errp) 947 { 948 Property *prop = opaque; 949 PCIExpLinkSpeed *p = object_field_prop_ptr(obj, prop); 950 int speed; 951 952 switch (*p) { 953 case QEMU_PCI_EXP_LNK_2_5GT: 954 speed = PCIE_LINK_SPEED_2_5; 955 break; 956 case QEMU_PCI_EXP_LNK_5GT: 957 speed = PCIE_LINK_SPEED_5; 958 break; 959 case QEMU_PCI_EXP_LNK_8GT: 960 speed = PCIE_LINK_SPEED_8; 961 break; 962 case QEMU_PCI_EXP_LNK_16GT: 963 speed = PCIE_LINK_SPEED_16; 964 break; 965 default: 966 /* Unreachable */ 967 abort(); 968 } 969 970 visit_type_enum(v, name, &speed, prop->info->enum_table, errp); 971 } 972 973 static void set_prop_pcielinkspeed(Object *obj, Visitor *v, const char *name, 974 void *opaque, Error **errp) 975 { 976 Property *prop = opaque; 977 PCIExpLinkSpeed *p = object_field_prop_ptr(obj, prop); 978 int speed; 979 980 if (!visit_type_enum(v, name, &speed, prop->info->enum_table, 981 errp)) { 982 return; 983 } 984 985 switch (speed) { 986 case PCIE_LINK_SPEED_2_5: 987 *p = QEMU_PCI_EXP_LNK_2_5GT; 988 break; 989 case PCIE_LINK_SPEED_5: 990 *p = QEMU_PCI_EXP_LNK_5GT; 991 break; 992 case PCIE_LINK_SPEED_8: 993 *p = QEMU_PCI_EXP_LNK_8GT; 994 break; 995 case PCIE_LINK_SPEED_16: 996 *p = QEMU_PCI_EXP_LNK_16GT; 997 break; 998 default: 999 /* Unreachable */ 1000 abort(); 1001 } 1002 } 1003 1004 const PropertyInfo qdev_prop_pcie_link_speed = { 1005 .name = "PCIELinkSpeed", 1006 .description = "2_5/5/8/16", 1007 .enum_table = &PCIELinkSpeed_lookup, 1008 .get = get_prop_pcielinkspeed, 1009 .set = set_prop_pcielinkspeed, 1010 .set_default_value = qdev_propinfo_set_default_value_enum, 1011 }; 1012 1013 /* --- PCIELinkWidth 1/2/4/8/12/16/32 -- */ 1014 1015 static void get_prop_pcielinkwidth(Object *obj, Visitor *v, const char *name, 1016 void *opaque, Error **errp) 1017 { 1018 Property *prop = opaque; 1019 PCIExpLinkWidth *p = object_field_prop_ptr(obj, prop); 1020 int width; 1021 1022 switch (*p) { 1023 case QEMU_PCI_EXP_LNK_X1: 1024 width = PCIE_LINK_WIDTH_1; 1025 break; 1026 case QEMU_PCI_EXP_LNK_X2: 1027 width = PCIE_LINK_WIDTH_2; 1028 break; 1029 case QEMU_PCI_EXP_LNK_X4: 1030 width = PCIE_LINK_WIDTH_4; 1031 break; 1032 case QEMU_PCI_EXP_LNK_X8: 1033 width = PCIE_LINK_WIDTH_8; 1034 break; 1035 case QEMU_PCI_EXP_LNK_X12: 1036 width = PCIE_LINK_WIDTH_12; 1037 break; 1038 case QEMU_PCI_EXP_LNK_X16: 1039 width = PCIE_LINK_WIDTH_16; 1040 break; 1041 case QEMU_PCI_EXP_LNK_X32: 1042 width = PCIE_LINK_WIDTH_32; 1043 break; 1044 default: 1045 /* Unreachable */ 1046 abort(); 1047 } 1048 1049 visit_type_enum(v, name, &width, prop->info->enum_table, errp); 1050 } 1051 1052 static void set_prop_pcielinkwidth(Object *obj, Visitor *v, const char *name, 1053 void *opaque, Error **errp) 1054 { 1055 Property *prop = opaque; 1056 PCIExpLinkWidth *p = object_field_prop_ptr(obj, prop); 1057 int width; 1058 1059 if (!visit_type_enum(v, name, &width, prop->info->enum_table, 1060 errp)) { 1061 return; 1062 } 1063 1064 switch (width) { 1065 case PCIE_LINK_WIDTH_1: 1066 *p = QEMU_PCI_EXP_LNK_X1; 1067 break; 1068 case PCIE_LINK_WIDTH_2: 1069 *p = QEMU_PCI_EXP_LNK_X2; 1070 break; 1071 case PCIE_LINK_WIDTH_4: 1072 *p = QEMU_PCI_EXP_LNK_X4; 1073 break; 1074 case PCIE_LINK_WIDTH_8: 1075 *p = QEMU_PCI_EXP_LNK_X8; 1076 break; 1077 case PCIE_LINK_WIDTH_12: 1078 *p = QEMU_PCI_EXP_LNK_X12; 1079 break; 1080 case PCIE_LINK_WIDTH_16: 1081 *p = QEMU_PCI_EXP_LNK_X16; 1082 break; 1083 case PCIE_LINK_WIDTH_32: 1084 *p = QEMU_PCI_EXP_LNK_X32; 1085 break; 1086 default: 1087 /* Unreachable */ 1088 abort(); 1089 } 1090 } 1091 1092 const PropertyInfo qdev_prop_pcie_link_width = { 1093 .name = "PCIELinkWidth", 1094 .description = "1/2/4/8/12/16/32", 1095 .enum_table = &PCIELinkWidth_lookup, 1096 .get = get_prop_pcielinkwidth, 1097 .set = set_prop_pcielinkwidth, 1098 .set_default_value = qdev_propinfo_set_default_value_enum, 1099 }; 1100 1101 /* --- UUID --- */ 1102 1103 static void get_uuid(Object *obj, Visitor *v, const char *name, void *opaque, 1104 Error **errp) 1105 { 1106 Property *prop = opaque; 1107 QemuUUID *uuid = object_field_prop_ptr(obj, prop); 1108 char buffer[UUID_FMT_LEN + 1]; 1109 char *p = buffer; 1110 1111 qemu_uuid_unparse(uuid, buffer); 1112 1113 visit_type_str(v, name, &p, errp); 1114 } 1115 1116 #define UUID_VALUE_AUTO "auto" 1117 1118 static void set_uuid(Object *obj, Visitor *v, const char *name, void *opaque, 1119 Error **errp) 1120 { 1121 Property *prop = opaque; 1122 QemuUUID *uuid = object_field_prop_ptr(obj, prop); 1123 char *str; 1124 1125 if (!visit_type_str(v, name, &str, errp)) { 1126 return; 1127 } 1128 1129 if (!strcmp(str, UUID_VALUE_AUTO)) { 1130 qemu_uuid_generate(uuid); 1131 } else if (qemu_uuid_parse(str, uuid) < 0) { 1132 error_set_from_qdev_prop_error(errp, EINVAL, obj, name, str); 1133 } 1134 g_free(str); 1135 } 1136 1137 static void set_default_uuid_auto(ObjectProperty *op, const Property *prop) 1138 { 1139 object_property_set_default_str(op, UUID_VALUE_AUTO); 1140 } 1141 1142 const PropertyInfo qdev_prop_uuid = { 1143 .name = "str", 1144 .description = "UUID (aka GUID) or \"" UUID_VALUE_AUTO 1145 "\" for random value (default)", 1146 .get = get_uuid, 1147 .set = set_uuid, 1148 .set_default_value = set_default_uuid_auto, 1149 }; 1150