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