1 /* Support for generating ACPI tables and passing them to Guests 2 * 3 * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net> 4 * Copyright (C) 2006 Fabrice Bellard 5 * Copyright (C) 2013 Red Hat Inc 6 * 7 * Author: Michael S. Tsirkin <mst@redhat.com> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 19 * You should have received a copy of the GNU General Public License along 20 * with this program; if not, see <http://www.gnu.org/licenses/>. 21 */ 22 23 #include "qemu/osdep.h" 24 #include "qapi/error.h" 25 #include "qapi/qmp/qnum.h" 26 #include "acpi-build.h" 27 #include "acpi-common.h" 28 #include "qemu/bitmap.h" 29 #include "qemu/error-report.h" 30 #include "hw/pci/pci_bridge.h" 31 #include "hw/cxl/cxl.h" 32 #include "hw/core/cpu.h" 33 #include "target/i386/cpu.h" 34 #include "hw/timer/hpet.h" 35 #include "hw/acpi/acpi-defs.h" 36 #include "hw/acpi/acpi.h" 37 #include "hw/acpi/cpu.h" 38 #include "hw/nvram/fw_cfg.h" 39 #include "hw/acpi/bios-linker-loader.h" 40 #include "hw/acpi/acpi_aml_interface.h" 41 #include "hw/input/i8042.h" 42 #include "hw/acpi/memory_hotplug.h" 43 #include "sysemu/tpm.h" 44 #include "hw/acpi/tpm.h" 45 #include "hw/acpi/vmgenid.h" 46 #include "hw/acpi/erst.h" 47 #include "hw/acpi/piix4.h" 48 #include "sysemu/tpm_backend.h" 49 #include "hw/rtc/mc146818rtc_regs.h" 50 #include "migration/vmstate.h" 51 #include "hw/mem/memory-device.h" 52 #include "hw/mem/nvdimm.h" 53 #include "sysemu/numa.h" 54 #include "sysemu/reset.h" 55 #include "hw/hyperv/vmbus-bridge.h" 56 57 /* Supported chipsets: */ 58 #include "hw/southbridge/ich9.h" 59 #include "hw/southbridge/piix.h" 60 #include "hw/acpi/pcihp.h" 61 #include "hw/i386/fw_cfg.h" 62 #include "hw/i386/pc.h" 63 #include "hw/pci/pci_bus.h" 64 #include "hw/pci-host/i440fx.h" 65 #include "hw/pci-host/q35.h" 66 #include "hw/i386/x86-iommu.h" 67 68 #include "hw/acpi/aml-build.h" 69 #include "hw/acpi/utils.h" 70 #include "hw/acpi/pci.h" 71 #include "hw/acpi/cxl.h" 72 73 #include "qom/qom-qobject.h" 74 #include "hw/i386/amd_iommu.h" 75 #include "hw/i386/intel_iommu.h" 76 #include "hw/virtio/virtio-iommu.h" 77 78 #include "hw/acpi/hmat.h" 79 #include "hw/acpi/viot.h" 80 81 #include CONFIG_DEVICES 82 83 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and 84 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows 85 * a little bit, there should be plenty of free space since the DSDT 86 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1. 87 */ 88 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97 89 #define ACPI_BUILD_ALIGN_SIZE 0x1000 90 91 #define ACPI_BUILD_TABLE_SIZE 0x20000 92 93 /* #define DEBUG_ACPI_BUILD */ 94 #ifdef DEBUG_ACPI_BUILD 95 #define ACPI_BUILD_DPRINTF(fmt, ...) \ 96 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0) 97 #else 98 #define ACPI_BUILD_DPRINTF(fmt, ...) 99 #endif 100 101 typedef struct AcpiPmInfo { 102 bool s3_disabled; 103 bool s4_disabled; 104 bool pcihp_bridge_en; 105 bool smi_on_cpuhp; 106 bool smi_on_cpu_unplug; 107 bool pcihp_root_en; 108 uint8_t s4_val; 109 AcpiFadtData fadt; 110 uint16_t cpu_hp_io_base; 111 uint16_t pcihp_io_base; 112 uint16_t pcihp_io_len; 113 } AcpiPmInfo; 114 115 typedef struct AcpiMiscInfo { 116 bool has_hpet; 117 #ifdef CONFIG_TPM 118 TPMVersion tpm_version; 119 #endif 120 } AcpiMiscInfo; 121 122 typedef struct FwCfgTPMConfig { 123 uint32_t tpmppi_address; 124 uint8_t tpm_version; 125 uint8_t tpmppi_version; 126 } QEMU_PACKED FwCfgTPMConfig; 127 128 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg); 129 130 const struct AcpiGenericAddress x86_nvdimm_acpi_dsmio = { 131 .space_id = AML_AS_SYSTEM_IO, 132 .address = NVDIMM_ACPI_IO_BASE, 133 .bit_width = NVDIMM_ACPI_IO_LEN << 3 134 }; 135 136 static void init_common_fadt_data(MachineState *ms, Object *o, 137 AcpiFadtData *data) 138 { 139 X86MachineState *x86ms = X86_MACHINE(ms); 140 /* 141 * "ICH9-LPC" or "PIIX4_PM" has "smm-compat" property to keep the old 142 * behavior for compatibility irrelevant to smm_enabled, which doesn't 143 * comforms to ACPI spec. 144 */ 145 bool smm_enabled = object_property_get_bool(o, "smm-compat", NULL) ? 146 true : x86_machine_is_smm_enabled(x86ms); 147 uint32_t io = object_property_get_uint(o, ACPI_PM_PROP_PM_IO_BASE, NULL); 148 AmlAddressSpace as = AML_AS_SYSTEM_IO; 149 AcpiFadtData fadt = { 150 .rev = 3, 151 .flags = 152 (1 << ACPI_FADT_F_WBINVD) | 153 (1 << ACPI_FADT_F_PROC_C1) | 154 (1 << ACPI_FADT_F_SLP_BUTTON) | 155 (1 << ACPI_FADT_F_RTC_S4) | 156 (1 << ACPI_FADT_F_USE_PLATFORM_CLOCK) | 157 /* APIC destination mode ("Flat Logical") has an upper limit of 8 158 * CPUs for more than 8 CPUs, "Clustered Logical" mode has to be 159 * used 160 */ 161 ((ms->smp.max_cpus > 8) ? 162 (1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL) : 0), 163 .int_model = 1 /* Multiple APIC */, 164 .rtc_century = RTC_CENTURY, 165 .plvl2_lat = 0xfff /* C2 state not supported */, 166 .plvl3_lat = 0xfff /* C3 state not supported */, 167 .smi_cmd = smm_enabled ? ACPI_PORT_SMI_CMD : 0, 168 .sci_int = object_property_get_uint(o, ACPI_PM_PROP_SCI_INT, NULL), 169 .acpi_enable_cmd = 170 smm_enabled ? 171 object_property_get_uint(o, ACPI_PM_PROP_ACPI_ENABLE_CMD, NULL) : 172 0, 173 .acpi_disable_cmd = 174 smm_enabled ? 175 object_property_get_uint(o, ACPI_PM_PROP_ACPI_DISABLE_CMD, NULL) : 176 0, 177 .pm1a_evt = { .space_id = as, .bit_width = 4 * 8, .address = io }, 178 .pm1a_cnt = { .space_id = as, .bit_width = 2 * 8, 179 .address = io + 0x04 }, 180 .pm_tmr = { .space_id = as, .bit_width = 4 * 8, .address = io + 0x08 }, 181 .gpe0_blk = { .space_id = as, .bit_width = 182 object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK_LEN, NULL) * 8, 183 .address = object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK, NULL) 184 }, 185 }; 186 187 /* 188 * ACPI v2, Table 5-10 - Fixed ACPI Description Table Boot Architecture 189 * Flags, bit offset 1 - 8042. 190 */ 191 fadt.iapc_boot_arch = iapc_boot_arch_8042(); 192 193 *data = fadt; 194 } 195 196 static Object *object_resolve_type_unambiguous(const char *typename) 197 { 198 bool ambig; 199 Object *o = object_resolve_path_type("", typename, &ambig); 200 201 if (ambig || !o) { 202 return NULL; 203 } 204 return o; 205 } 206 207 static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm) 208 { 209 Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM); 210 Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE); 211 Object *obj = piix ? piix : lpc; 212 QObject *o; 213 pm->cpu_hp_io_base = 0; 214 pm->pcihp_io_base = 0; 215 pm->pcihp_io_len = 0; 216 pm->smi_on_cpuhp = false; 217 pm->smi_on_cpu_unplug = false; 218 219 assert(obj); 220 init_common_fadt_data(machine, obj, &pm->fadt); 221 if (piix) { 222 /* w2k requires FADT(rev1) or it won't boot, keep PC compatible */ 223 pm->fadt.rev = 1; 224 pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE; 225 } 226 if (lpc) { 227 uint64_t smi_features = object_property_get_uint(lpc, 228 ICH9_LPC_SMI_NEGOTIATED_FEAT_PROP, NULL); 229 struct AcpiGenericAddress r = { .space_id = AML_AS_SYSTEM_IO, 230 .bit_width = 8, .address = ICH9_RST_CNT_IOPORT }; 231 pm->fadt.reset_reg = r; 232 pm->fadt.reset_val = 0xf; 233 pm->fadt.flags |= 1 << ACPI_FADT_F_RESET_REG_SUP; 234 pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE; 235 pm->smi_on_cpuhp = 236 !!(smi_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT)); 237 pm->smi_on_cpu_unplug = 238 !!(smi_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT)); 239 } 240 pm->pcihp_io_base = 241 object_property_get_uint(obj, ACPI_PCIHP_IO_BASE_PROP, NULL); 242 pm->pcihp_io_len = 243 object_property_get_uint(obj, ACPI_PCIHP_IO_LEN_PROP, NULL); 244 245 /* The above need not be conditional on machine type because the reset port 246 * happens to be the same on PIIX (pc) and ICH9 (q35). */ 247 QEMU_BUILD_BUG_ON(ICH9_RST_CNT_IOPORT != PIIX_RCR_IOPORT); 248 249 /* Fill in optional s3/s4 related properties */ 250 o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL); 251 if (o) { 252 pm->s3_disabled = qnum_get_uint(qobject_to(QNum, o)); 253 } else { 254 pm->s3_disabled = false; 255 } 256 qobject_unref(o); 257 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL); 258 if (o) { 259 pm->s4_disabled = qnum_get_uint(qobject_to(QNum, o)); 260 } else { 261 pm->s4_disabled = false; 262 } 263 qobject_unref(o); 264 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL); 265 if (o) { 266 pm->s4_val = qnum_get_uint(qobject_to(QNum, o)); 267 } else { 268 pm->s4_val = false; 269 } 270 qobject_unref(o); 271 272 pm->pcihp_bridge_en = 273 object_property_get_bool(obj, ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, 274 NULL); 275 pm->pcihp_root_en = 276 object_property_get_bool(obj, ACPI_PM_PROP_ACPI_PCI_ROOTHP, 277 NULL); 278 } 279 280 static void acpi_get_misc_info(AcpiMiscInfo *info) 281 { 282 info->has_hpet = hpet_find(); 283 #ifdef CONFIG_TPM 284 info->tpm_version = tpm_get_version(tpm_find()); 285 #endif 286 } 287 288 /* 289 * Because of the PXB hosts we cannot simply query TYPE_PCI_HOST_BRIDGE. 290 * On i386 arch we only have two pci hosts, so we can look only for them. 291 */ 292 Object *acpi_get_i386_pci_host(void) 293 { 294 PCIHostState *host; 295 296 host = PCI_HOST_BRIDGE(object_resolve_path("/machine/i440fx", NULL)); 297 if (!host) { 298 host = PCI_HOST_BRIDGE(object_resolve_path("/machine/q35", NULL)); 299 } 300 301 return OBJECT(host); 302 } 303 304 static void acpi_get_pci_holes(Range *hole, Range *hole64) 305 { 306 Object *pci_host; 307 308 pci_host = acpi_get_i386_pci_host(); 309 310 if (!pci_host) { 311 return; 312 } 313 314 range_set_bounds1(hole, 315 object_property_get_uint(pci_host, 316 PCI_HOST_PROP_PCI_HOLE_START, 317 NULL), 318 object_property_get_uint(pci_host, 319 PCI_HOST_PROP_PCI_HOLE_END, 320 NULL)); 321 range_set_bounds1(hole64, 322 object_property_get_uint(pci_host, 323 PCI_HOST_PROP_PCI_HOLE64_START, 324 NULL), 325 object_property_get_uint(pci_host, 326 PCI_HOST_PROP_PCI_HOLE64_END, 327 NULL)); 328 } 329 330 static void acpi_align_size(GArray *blob, unsigned align) 331 { 332 /* Align size to multiple of given size. This reduces the chance 333 * we need to change size in the future (breaking cross version migration). 334 */ 335 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); 336 } 337 338 /* 339 * ACPI spec 1.0b, 340 * 5.2.6 Firmware ACPI Control Structure 341 */ 342 static void 343 build_facs(GArray *table_data) 344 { 345 const char *sig = "FACS"; 346 const uint8_t reserved[40] = {}; 347 348 g_array_append_vals(table_data, sig, 4); /* Signature */ 349 build_append_int_noprefix(table_data, 64, 4); /* Length */ 350 build_append_int_noprefix(table_data, 0, 4); /* Hardware Signature */ 351 build_append_int_noprefix(table_data, 0, 4); /* Firmware Waking Vector */ 352 build_append_int_noprefix(table_data, 0, 4); /* Global Lock */ 353 build_append_int_noprefix(table_data, 0, 4); /* Flags */ 354 g_array_append_vals(table_data, reserved, 40); /* Reserved */ 355 } 356 357 Aml *aml_pci_device_dsm(void) 358 { 359 Aml *method; 360 361 method = aml_method("_DSM", 4, AML_SERIALIZED); 362 { 363 Aml *params = aml_local(0); 364 Aml *pkg = aml_package(2); 365 aml_append(pkg, aml_name("BSEL")); 366 aml_append(pkg, aml_name("ASUN")); 367 aml_append(method, aml_store(pkg, params)); 368 aml_append(method, 369 aml_return(aml_call5("PDSM", aml_arg(0), aml_arg(1), 370 aml_arg(2), aml_arg(3), params)) 371 ); 372 } 373 return method; 374 } 375 376 static void build_append_pcihp_notify_entry(Aml *method, int slot) 377 { 378 Aml *if_ctx; 379 int32_t devfn = PCI_DEVFN(slot, 0); 380 381 if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot), NULL)); 382 aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1))); 383 aml_append(method, if_ctx); 384 } 385 386 static bool is_devfn_ignored_generic(const int devfn, const PCIBus *bus) 387 { 388 const PCIDevice *pdev = bus->devices[devfn]; 389 390 if (PCI_FUNC(devfn)) { 391 if (IS_PCI_BRIDGE(pdev)) { 392 /* 393 * Ignore only hotplugged PCI bridges on !0 functions, but 394 * allow describing cold plugged bridges on all functions 395 */ 396 if (DEVICE(pdev)->hotplugged) { 397 return true; 398 } 399 } else if (!get_dev_aml_func(DEVICE(pdev))) { 400 /* 401 * Ignore all other devices on !0 functions unless they 402 * have AML description (i.e have get_dev_aml_func() != 0) 403 */ 404 return true; 405 } 406 } 407 return false; 408 } 409 410 static bool is_devfn_ignored_hotplug(const int devfn, const PCIBus *bus) 411 { 412 PCIDevice *pdev = bus->devices[devfn]; 413 if (pdev) { 414 return is_devfn_ignored_generic(devfn, bus) || 415 !DEVICE_GET_CLASS(pdev)->hotpluggable || 416 /* Cold plugged bridges aren't themselves hot-pluggable */ 417 (IS_PCI_BRIDGE(pdev) && !DEVICE(pdev)->hotplugged); 418 } else { /* non populated slots */ 419 /* 420 * hotplug is supported only for non-multifunction device 421 * so generate device description only for function 0 422 */ 423 if (PCI_FUNC(devfn) || 424 (pci_bus_is_express(bus) && PCI_SLOT(devfn) > 0)) { 425 return true; 426 } 427 } 428 return false; 429 } 430 431 static void build_append_pcihp_slots(Aml *parent_scope, PCIBus *bus, 432 QObject *bsel) 433 { 434 int devfn; 435 Aml *dev, *notify_method = NULL, *method; 436 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); 437 438 aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val))); 439 notify_method = aml_method("DVNT", 2, AML_NOTSERIALIZED); 440 441 for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { 442 int slot = PCI_SLOT(devfn); 443 int adr = slot << 16 | PCI_FUNC(devfn); 444 445 if (is_devfn_ignored_hotplug(devfn, bus)) { 446 continue; 447 } 448 449 if (bus->devices[devfn]) { 450 dev = aml_scope("S%.02X", devfn); 451 } else { 452 dev = aml_device("S%.02X", devfn); 453 aml_append(dev, aml_name_decl("_ADR", aml_int(adr))); 454 } 455 456 /* 457 * Can't declare _SUN here for every device as it changes 'slot' 458 * enumeration order in linux kernel, so use another variable for it 459 */ 460 aml_append(dev, aml_name_decl("ASUN", aml_int(slot))); 461 aml_append(dev, aml_pci_device_dsm()); 462 463 aml_append(dev, aml_name_decl("_SUN", aml_int(slot))); 464 /* add _EJ0 to make slot hotpluggable */ 465 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 466 aml_append(method, 467 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN")) 468 ); 469 aml_append(dev, method); 470 471 build_append_pcihp_notify_entry(notify_method, slot); 472 473 /* device descriptor has been composed, add it into parent context */ 474 aml_append(parent_scope, dev); 475 } 476 aml_append(parent_scope, notify_method); 477 } 478 479 void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus) 480 { 481 QObject *bsel; 482 int devfn; 483 Aml *dev; 484 485 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL); 486 487 for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { 488 /* ACPI spec: 1.0b: Table 6-2 _ADR Object Bus Types, PCI type */ 489 int adr = PCI_SLOT(devfn) << 16 | PCI_FUNC(devfn); 490 PCIDevice *pdev = bus->devices[devfn]; 491 492 if (!pdev || is_devfn_ignored_generic(devfn, bus)) { 493 continue; 494 } 495 496 /* start to compose PCI device descriptor */ 497 dev = aml_device("S%.02X", devfn); 498 aml_append(dev, aml_name_decl("_ADR", aml_int(adr))); 499 500 call_dev_aml_func(DEVICE(bus->devices[devfn]), dev); 501 502 /* device descriptor has been composed, add it into parent context */ 503 aml_append(parent_scope, dev); 504 } 505 506 if (bsel) { 507 build_append_pcihp_slots(parent_scope, bus, bsel); 508 } 509 510 qobject_unref(bsel); 511 } 512 513 static bool build_append_notfication_callback(Aml *parent_scope, 514 const PCIBus *bus) 515 { 516 Aml *method; 517 PCIBus *sec; 518 QObject *bsel; 519 int nr_notifiers = 0; 520 521 QLIST_FOREACH(sec, &bus->child, sibling) { 522 Aml *br_scope = aml_scope("S%.02X", sec->parent_dev->devfn); 523 if (pci_bus_is_root(sec) || 524 !object_property_find(OBJECT(sec), ACPI_PCIHP_PROP_BSEL)) { 525 continue; 526 } 527 nr_notifiers = nr_notifiers + 528 build_append_notfication_callback(br_scope, sec); 529 aml_append(parent_scope, br_scope); 530 } 531 532 /* 533 * Append PCNT method to notify about events on local and child buses. 534 * ps: hostbridge might not have hotplug (bsel) enabled but might have 535 * child bridges that do have bsel. 536 */ 537 method = aml_method("PCNT", 0, AML_NOTSERIALIZED); 538 539 /* If bus supports hotplug select it and notify about local events */ 540 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL); 541 if (bsel) { 542 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); 543 544 aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM"))); 545 aml_append(method, aml_call2("DVNT", aml_name("PCIU"), 546 aml_int(1))); /* Device Check */ 547 aml_append(method, aml_call2("DVNT", aml_name("PCID"), 548 aml_int(3))); /* Eject Request */ 549 nr_notifiers++; 550 } 551 552 /* Notify about child bus events in any case */ 553 QLIST_FOREACH(sec, &bus->child, sibling) { 554 if (pci_bus_is_root(sec) || 555 !object_property_find(OBJECT(sec), ACPI_PCIHP_PROP_BSEL)) { 556 continue; 557 } 558 559 aml_append(method, aml_name("^S%.02X.PCNT", sec->parent_dev->devfn)); 560 } 561 562 aml_append(parent_scope, method); 563 qobject_unref(bsel); 564 return !!nr_notifiers; 565 } 566 567 static Aml *aml_pci_pdsm(void) 568 { 569 Aml *method, *UUID, *ifctx, *ifctx1; 570 Aml *ret = aml_local(0); 571 Aml *caps = aml_local(1); 572 Aml *acpi_index = aml_local(2); 573 Aml *zero = aml_int(0); 574 Aml *one = aml_int(1); 575 Aml *func = aml_arg(2); 576 Aml *rev = aml_arg(1); 577 Aml *params = aml_arg(4); 578 Aml *bnum = aml_derefof(aml_index(params, aml_int(0))); 579 Aml *sunum = aml_derefof(aml_index(params, aml_int(1))); 580 581 method = aml_method("PDSM", 5, AML_SERIALIZED); 582 583 /* get supported functions */ 584 ifctx = aml_if(aml_equal(func, zero)); 585 { 586 uint8_t byte_list[1] = { 0 }; /* nothing supported yet */ 587 aml_append(ifctx, aml_store(aml_buffer(1, byte_list), ret)); 588 aml_append(ifctx, aml_store(zero, caps)); 589 590 /* 591 * PCI Firmware Specification 3.1 592 * 4.6. _DSM Definitions for PCI 593 */ 594 UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D"); 595 ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(0), UUID))); 596 { 597 /* call is for unsupported UUID, bail out */ 598 aml_append(ifctx1, aml_return(ret)); 599 } 600 aml_append(ifctx, ifctx1); 601 602 ifctx1 = aml_if(aml_lless(rev, aml_int(2))); 603 { 604 /* call is for unsupported REV, bail out */ 605 aml_append(ifctx1, aml_return(ret)); 606 } 607 aml_append(ifctx, ifctx1); 608 609 aml_append(ifctx, 610 aml_store(aml_call2("AIDX", bnum, sunum), acpi_index)); 611 /* 612 * advertise function 7 if device has acpi-index 613 * acpi_index values: 614 * 0: not present (default value) 615 * FFFFFFFF: not supported (old QEMU without PIDX reg) 616 * other: device's acpi-index 617 */ 618 ifctx1 = aml_if(aml_lnot( 619 aml_or(aml_equal(acpi_index, zero), 620 aml_equal(acpi_index, aml_int(0xFFFFFFFF)), NULL) 621 )); 622 { 623 /* have supported functions */ 624 aml_append(ifctx1, aml_or(caps, one, caps)); 625 /* support for function 7 */ 626 aml_append(ifctx1, 627 aml_or(caps, aml_shiftleft(one, aml_int(7)), caps)); 628 } 629 aml_append(ifctx, ifctx1); 630 631 aml_append(ifctx, aml_store(caps, aml_index(ret, zero))); 632 aml_append(ifctx, aml_return(ret)); 633 } 634 aml_append(method, ifctx); 635 636 /* handle specific functions requests */ 637 /* 638 * PCI Firmware Specification 3.1 639 * 4.6.7. _DSM for Naming a PCI or PCI Express Device Under 640 * Operating Systems 641 */ 642 ifctx = aml_if(aml_equal(func, aml_int(7))); 643 { 644 Aml *pkg = aml_package(2); 645 646 aml_append(pkg, zero); 647 /* 648 * optional, if not impl. should return null string 649 */ 650 aml_append(pkg, aml_string("%s", "")); 651 aml_append(ifctx, aml_store(pkg, ret)); 652 653 aml_append(ifctx, aml_store(aml_call2("AIDX", bnum, sunum), acpi_index)); 654 /* 655 * update acpi-index to actual value 656 */ 657 aml_append(ifctx, aml_store(acpi_index, aml_index(ret, zero))); 658 aml_append(ifctx, aml_return(ret)); 659 } 660 661 aml_append(method, ifctx); 662 return method; 663 } 664 665 /** 666 * build_prt_entry: 667 * @link_name: link name for PCI route entry 668 * 669 * build AML package containing a PCI route entry for @link_name 670 */ 671 static Aml *build_prt_entry(const char *link_name) 672 { 673 Aml *a_zero = aml_int(0); 674 Aml *pkg = aml_package(4); 675 aml_append(pkg, a_zero); 676 aml_append(pkg, a_zero); 677 aml_append(pkg, aml_name("%s", link_name)); 678 aml_append(pkg, a_zero); 679 return pkg; 680 } 681 682 /* 683 * initialize_route - Initialize the interrupt routing rule 684 * through a specific LINK: 685 * if (lnk_idx == idx) 686 * route using link 'link_name' 687 */ 688 static Aml *initialize_route(Aml *route, const char *link_name, 689 Aml *lnk_idx, int idx) 690 { 691 Aml *if_ctx = aml_if(aml_equal(lnk_idx, aml_int(idx))); 692 Aml *pkg = build_prt_entry(link_name); 693 694 aml_append(if_ctx, aml_store(pkg, route)); 695 696 return if_ctx; 697 } 698 699 /* 700 * build_prt - Define interrupt rounting rules 701 * 702 * Returns an array of 128 routes, one for each device, 703 * based on device location. 704 * The main goal is to equaly distribute the interrupts 705 * over the 4 existing ACPI links (works only for i440fx). 706 * The hash function is (slot + pin) & 3 -> "LNK[D|A|B|C]". 707 * 708 */ 709 static Aml *build_prt(bool is_pci0_prt) 710 { 711 Aml *method, *while_ctx, *pin, *res; 712 713 method = aml_method("_PRT", 0, AML_NOTSERIALIZED); 714 res = aml_local(0); 715 pin = aml_local(1); 716 aml_append(method, aml_store(aml_package(128), res)); 717 aml_append(method, aml_store(aml_int(0), pin)); 718 719 /* while (pin < 128) */ 720 while_ctx = aml_while(aml_lless(pin, aml_int(128))); 721 { 722 Aml *slot = aml_local(2); 723 Aml *lnk_idx = aml_local(3); 724 Aml *route = aml_local(4); 725 726 /* slot = pin >> 2 */ 727 aml_append(while_ctx, 728 aml_store(aml_shiftright(pin, aml_int(2), NULL), slot)); 729 /* lnk_idx = (slot + pin) & 3 */ 730 aml_append(while_ctx, 731 aml_store(aml_and(aml_add(pin, slot, NULL), aml_int(3), NULL), 732 lnk_idx)); 733 734 /* route[2] = "LNK[D|A|B|C]", selection based on pin % 3 */ 735 aml_append(while_ctx, initialize_route(route, "LNKD", lnk_idx, 0)); 736 if (is_pci0_prt) { 737 Aml *if_device_1, *if_pin_4, *else_pin_4; 738 739 /* device 1 is the power-management device, needs SCI */ 740 if_device_1 = aml_if(aml_equal(lnk_idx, aml_int(1))); 741 { 742 if_pin_4 = aml_if(aml_equal(pin, aml_int(4))); 743 { 744 aml_append(if_pin_4, 745 aml_store(build_prt_entry("LNKS"), route)); 746 } 747 aml_append(if_device_1, if_pin_4); 748 else_pin_4 = aml_else(); 749 { 750 aml_append(else_pin_4, 751 aml_store(build_prt_entry("LNKA"), route)); 752 } 753 aml_append(if_device_1, else_pin_4); 754 } 755 aml_append(while_ctx, if_device_1); 756 } else { 757 aml_append(while_ctx, initialize_route(route, "LNKA", lnk_idx, 1)); 758 } 759 aml_append(while_ctx, initialize_route(route, "LNKB", lnk_idx, 2)); 760 aml_append(while_ctx, initialize_route(route, "LNKC", lnk_idx, 3)); 761 762 /* route[0] = 0x[slot]FFFF */ 763 aml_append(while_ctx, 764 aml_store(aml_or(aml_shiftleft(slot, aml_int(16)), aml_int(0xFFFF), 765 NULL), 766 aml_index(route, aml_int(0)))); 767 /* route[1] = pin & 3 */ 768 aml_append(while_ctx, 769 aml_store(aml_and(pin, aml_int(3), NULL), 770 aml_index(route, aml_int(1)))); 771 /* res[pin] = route */ 772 aml_append(while_ctx, aml_store(route, aml_index(res, pin))); 773 /* pin++ */ 774 aml_append(while_ctx, aml_increment(pin)); 775 } 776 aml_append(method, while_ctx); 777 /* return res*/ 778 aml_append(method, aml_return(res)); 779 780 return method; 781 } 782 783 static void build_hpet_aml(Aml *table) 784 { 785 Aml *crs; 786 Aml *field; 787 Aml *method; 788 Aml *if_ctx; 789 Aml *scope = aml_scope("_SB"); 790 Aml *dev = aml_device("HPET"); 791 Aml *zero = aml_int(0); 792 Aml *id = aml_local(0); 793 Aml *period = aml_local(1); 794 795 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0103"))); 796 aml_append(dev, aml_name_decl("_UID", zero)); 797 798 aml_append(dev, 799 aml_operation_region("HPTM", AML_SYSTEM_MEMORY, aml_int(HPET_BASE), 800 HPET_LEN)); 801 field = aml_field("HPTM", AML_DWORD_ACC, AML_LOCK, AML_PRESERVE); 802 aml_append(field, aml_named_field("VEND", 32)); 803 aml_append(field, aml_named_field("PRD", 32)); 804 aml_append(dev, field); 805 806 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 807 aml_append(method, aml_store(aml_name("VEND"), id)); 808 aml_append(method, aml_store(aml_name("PRD"), period)); 809 aml_append(method, aml_shiftright(id, aml_int(16), id)); 810 if_ctx = aml_if(aml_lor(aml_equal(id, zero), 811 aml_equal(id, aml_int(0xffff)))); 812 { 813 aml_append(if_ctx, aml_return(zero)); 814 } 815 aml_append(method, if_ctx); 816 817 if_ctx = aml_if(aml_lor(aml_equal(period, zero), 818 aml_lgreater(period, aml_int(100000000)))); 819 { 820 aml_append(if_ctx, aml_return(zero)); 821 } 822 aml_append(method, if_ctx); 823 824 aml_append(method, aml_return(aml_int(0x0F))); 825 aml_append(dev, method); 826 827 crs = aml_resource_template(); 828 aml_append(crs, aml_memory32_fixed(HPET_BASE, HPET_LEN, AML_READ_ONLY)); 829 aml_append(dev, aml_name_decl("_CRS", crs)); 830 831 aml_append(scope, dev); 832 aml_append(table, scope); 833 } 834 835 static Aml *build_vmbus_device_aml(VMBusBridge *vmbus_bridge) 836 { 837 Aml *dev; 838 Aml *method; 839 Aml *crs; 840 841 dev = aml_device("VMBS"); 842 aml_append(dev, aml_name_decl("STA", aml_int(0xF))); 843 aml_append(dev, aml_name_decl("_HID", aml_string("VMBus"))); 844 aml_append(dev, aml_name_decl("_UID", aml_int(0x0))); 845 aml_append(dev, aml_name_decl("_DDN", aml_string("VMBUS"))); 846 847 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 848 aml_append(method, aml_store(aml_and(aml_name("STA"), aml_int(0xD), NULL), 849 aml_name("STA"))); 850 aml_append(dev, method); 851 852 method = aml_method("_PS0", 0, AML_NOTSERIALIZED); 853 aml_append(method, aml_store(aml_or(aml_name("STA"), aml_int(0xF), NULL), 854 aml_name("STA"))); 855 aml_append(dev, method); 856 857 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 858 aml_append(method, aml_return(aml_name("STA"))); 859 aml_append(dev, method); 860 861 aml_append(dev, aml_name_decl("_PS3", aml_int(0x0))); 862 863 crs = aml_resource_template(); 864 aml_append(crs, aml_irq_no_flags(vmbus_bridge->irq)); 865 aml_append(dev, aml_name_decl("_CRS", crs)); 866 867 return dev; 868 } 869 870 static void build_dbg_aml(Aml *table) 871 { 872 Aml *field; 873 Aml *method; 874 Aml *while_ctx; 875 Aml *scope = aml_scope("\\"); 876 Aml *buf = aml_local(0); 877 Aml *len = aml_local(1); 878 Aml *idx = aml_local(2); 879 880 aml_append(scope, 881 aml_operation_region("DBG", AML_SYSTEM_IO, aml_int(0x0402), 0x01)); 882 field = aml_field("DBG", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); 883 aml_append(field, aml_named_field("DBGB", 8)); 884 aml_append(scope, field); 885 886 method = aml_method("DBUG", 1, AML_NOTSERIALIZED); 887 888 aml_append(method, aml_to_hexstring(aml_arg(0), buf)); 889 aml_append(method, aml_to_buffer(buf, buf)); 890 aml_append(method, aml_subtract(aml_sizeof(buf), aml_int(1), len)); 891 aml_append(method, aml_store(aml_int(0), idx)); 892 893 while_ctx = aml_while(aml_lless(idx, len)); 894 aml_append(while_ctx, 895 aml_store(aml_derefof(aml_index(buf, idx)), aml_name("DBGB"))); 896 aml_append(while_ctx, aml_increment(idx)); 897 aml_append(method, while_ctx); 898 899 aml_append(method, aml_store(aml_int(0x0A), aml_name("DBGB"))); 900 aml_append(scope, method); 901 902 aml_append(table, scope); 903 } 904 905 static Aml *build_link_dev(const char *name, uint8_t uid, Aml *reg) 906 { 907 Aml *dev; 908 Aml *crs; 909 Aml *method; 910 uint32_t irqs[] = {5, 10, 11}; 911 912 dev = aml_device("%s", name); 913 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 914 aml_append(dev, aml_name_decl("_UID", aml_int(uid))); 915 916 crs = aml_resource_template(); 917 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 918 AML_SHARED, irqs, ARRAY_SIZE(irqs))); 919 aml_append(dev, aml_name_decl("_PRS", crs)); 920 921 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 922 aml_append(method, aml_return(aml_call1("IQST", reg))); 923 aml_append(dev, method); 924 925 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 926 aml_append(method, aml_or(reg, aml_int(0x80), reg)); 927 aml_append(dev, method); 928 929 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 930 aml_append(method, aml_return(aml_call1("IQCR", reg))); 931 aml_append(dev, method); 932 933 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 934 aml_append(method, aml_create_dword_field(aml_arg(0), aml_int(5), "PRRI")); 935 aml_append(method, aml_store(aml_name("PRRI"), reg)); 936 aml_append(dev, method); 937 938 return dev; 939 } 940 941 static Aml *build_gsi_link_dev(const char *name, uint8_t uid, uint8_t gsi) 942 { 943 Aml *dev; 944 Aml *crs; 945 Aml *method; 946 uint32_t irqs; 947 948 dev = aml_device("%s", name); 949 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 950 aml_append(dev, aml_name_decl("_UID", aml_int(uid))); 951 952 crs = aml_resource_template(); 953 irqs = gsi; 954 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 955 AML_SHARED, &irqs, 1)); 956 aml_append(dev, aml_name_decl("_PRS", crs)); 957 958 aml_append(dev, aml_name_decl("_CRS", crs)); 959 960 /* 961 * _DIS can be no-op because the interrupt cannot be disabled. 962 */ 963 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 964 aml_append(dev, method); 965 966 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 967 aml_append(dev, method); 968 969 return dev; 970 } 971 972 /* _CRS method - get current settings */ 973 static Aml *build_iqcr_method(bool is_piix4) 974 { 975 Aml *if_ctx; 976 uint32_t irqs; 977 Aml *method = aml_method("IQCR", 1, AML_SERIALIZED); 978 Aml *crs = aml_resource_template(); 979 980 irqs = 0; 981 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, 982 AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1)); 983 aml_append(method, aml_name_decl("PRR0", crs)); 984 985 aml_append(method, 986 aml_create_dword_field(aml_name("PRR0"), aml_int(5), "PRRI")); 987 988 if (is_piix4) { 989 if_ctx = aml_if(aml_lless(aml_arg(0), aml_int(0x80))); 990 aml_append(if_ctx, aml_store(aml_arg(0), aml_name("PRRI"))); 991 aml_append(method, if_ctx); 992 } else { 993 aml_append(method, 994 aml_store(aml_and(aml_arg(0), aml_int(0xF), NULL), 995 aml_name("PRRI"))); 996 } 997 998 aml_append(method, aml_return(aml_name("PRR0"))); 999 return method; 1000 } 1001 1002 /* _STA method - get status */ 1003 static Aml *build_irq_status_method(void) 1004 { 1005 Aml *if_ctx; 1006 Aml *method = aml_method("IQST", 1, AML_NOTSERIALIZED); 1007 1008 if_ctx = aml_if(aml_and(aml_int(0x80), aml_arg(0), NULL)); 1009 aml_append(if_ctx, aml_return(aml_int(0x09))); 1010 aml_append(method, if_ctx); 1011 aml_append(method, aml_return(aml_int(0x0B))); 1012 return method; 1013 } 1014 1015 static void build_piix4_pci0_int(Aml *table) 1016 { 1017 Aml *dev; 1018 Aml *crs; 1019 Aml *method; 1020 uint32_t irqs; 1021 Aml *sb_scope = aml_scope("_SB"); 1022 Aml *pci0_scope = aml_scope("PCI0"); 1023 1024 aml_append(pci0_scope, build_prt(true)); 1025 aml_append(sb_scope, pci0_scope); 1026 1027 aml_append(sb_scope, build_irq_status_method()); 1028 aml_append(sb_scope, build_iqcr_method(true)); 1029 1030 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQ0"))); 1031 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQ1"))); 1032 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQ2"))); 1033 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQ3"))); 1034 1035 dev = aml_device("LNKS"); 1036 { 1037 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 1038 aml_append(dev, aml_name_decl("_UID", aml_int(4))); 1039 1040 crs = aml_resource_template(); 1041 irqs = 9; 1042 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, 1043 AML_ACTIVE_HIGH, AML_SHARED, 1044 &irqs, 1)); 1045 aml_append(dev, aml_name_decl("_PRS", crs)); 1046 1047 /* The SCI cannot be disabled and is always attached to GSI 9, 1048 * so these are no-ops. We only need this link to override the 1049 * polarity to active high and match the content of the MADT. 1050 */ 1051 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1052 aml_append(method, aml_return(aml_int(0x0b))); 1053 aml_append(dev, method); 1054 1055 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 1056 aml_append(dev, method); 1057 1058 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 1059 aml_append(method, aml_return(aml_name("_PRS"))); 1060 aml_append(dev, method); 1061 1062 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 1063 aml_append(dev, method); 1064 } 1065 aml_append(sb_scope, dev); 1066 1067 aml_append(table, sb_scope); 1068 } 1069 1070 static void append_q35_prt_entry(Aml *ctx, uint32_t nr, const char *name) 1071 { 1072 int i; 1073 int head; 1074 Aml *pkg; 1075 char base = name[3] < 'E' ? 'A' : 'E'; 1076 char *s = g_strdup(name); 1077 Aml *a_nr = aml_int((nr << 16) | 0xffff); 1078 1079 assert(strlen(s) == 4); 1080 1081 head = name[3] - base; 1082 for (i = 0; i < 4; i++) { 1083 if (head + i > 3) { 1084 head = i * -1; 1085 } 1086 s[3] = base + head + i; 1087 pkg = aml_package(4); 1088 aml_append(pkg, a_nr); 1089 aml_append(pkg, aml_int(i)); 1090 aml_append(pkg, aml_name("%s", s)); 1091 aml_append(pkg, aml_int(0)); 1092 aml_append(ctx, pkg); 1093 } 1094 g_free(s); 1095 } 1096 1097 static Aml *build_q35_routing_table(const char *str) 1098 { 1099 int i; 1100 Aml *pkg; 1101 char *name = g_strdup_printf("%s ", str); 1102 1103 pkg = aml_package(128); 1104 for (i = 0; i < 0x18; i++) { 1105 name[3] = 'E' + (i & 0x3); 1106 append_q35_prt_entry(pkg, i, name); 1107 } 1108 1109 name[3] = 'E'; 1110 append_q35_prt_entry(pkg, 0x18, name); 1111 1112 /* INTA -> PIRQA for slot 25 - 31, see the default value of D<N>IR */ 1113 for (i = 0x0019; i < 0x1e; i++) { 1114 name[3] = 'A'; 1115 append_q35_prt_entry(pkg, i, name); 1116 } 1117 1118 /* PCIe->PCI bridge. use PIRQ[E-H] */ 1119 name[3] = 'E'; 1120 append_q35_prt_entry(pkg, 0x1e, name); 1121 name[3] = 'A'; 1122 append_q35_prt_entry(pkg, 0x1f, name); 1123 1124 g_free(name); 1125 return pkg; 1126 } 1127 1128 static void build_q35_pci0_int(Aml *table) 1129 { 1130 Aml *method; 1131 Aml *sb_scope = aml_scope("_SB"); 1132 Aml *pci0_scope = aml_scope("PCI0"); 1133 1134 /* Zero => PIC mode, One => APIC Mode */ 1135 aml_append(table, aml_name_decl("PICF", aml_int(0))); 1136 method = aml_method("_PIC", 1, AML_NOTSERIALIZED); 1137 { 1138 aml_append(method, aml_store(aml_arg(0), aml_name("PICF"))); 1139 } 1140 aml_append(table, method); 1141 1142 aml_append(pci0_scope, 1143 aml_name_decl("PRTP", build_q35_routing_table("LNK"))); 1144 aml_append(pci0_scope, 1145 aml_name_decl("PRTA", build_q35_routing_table("GSI"))); 1146 1147 method = aml_method("_PRT", 0, AML_NOTSERIALIZED); 1148 { 1149 Aml *if_ctx; 1150 Aml *else_ctx; 1151 1152 /* PCI IRQ routing table, example from ACPI 2.0a specification, 1153 section 6.2.8.1 */ 1154 /* Note: we provide the same info as the PCI routing 1155 table of the Bochs BIOS */ 1156 if_ctx = aml_if(aml_equal(aml_name("PICF"), aml_int(0))); 1157 aml_append(if_ctx, aml_return(aml_name("PRTP"))); 1158 aml_append(method, if_ctx); 1159 else_ctx = aml_else(); 1160 aml_append(else_ctx, aml_return(aml_name("PRTA"))); 1161 aml_append(method, else_ctx); 1162 } 1163 aml_append(pci0_scope, method); 1164 aml_append(sb_scope, pci0_scope); 1165 1166 aml_append(sb_scope, build_irq_status_method()); 1167 aml_append(sb_scope, build_iqcr_method(false)); 1168 1169 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQA"))); 1170 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQB"))); 1171 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQC"))); 1172 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQD"))); 1173 aml_append(sb_scope, build_link_dev("LNKE", 4, aml_name("PRQE"))); 1174 aml_append(sb_scope, build_link_dev("LNKF", 5, aml_name("PRQF"))); 1175 aml_append(sb_scope, build_link_dev("LNKG", 6, aml_name("PRQG"))); 1176 aml_append(sb_scope, build_link_dev("LNKH", 7, aml_name("PRQH"))); 1177 1178 aml_append(sb_scope, build_gsi_link_dev("GSIA", 0x10, 0x10)); 1179 aml_append(sb_scope, build_gsi_link_dev("GSIB", 0x11, 0x11)); 1180 aml_append(sb_scope, build_gsi_link_dev("GSIC", 0x12, 0x12)); 1181 aml_append(sb_scope, build_gsi_link_dev("GSID", 0x13, 0x13)); 1182 aml_append(sb_scope, build_gsi_link_dev("GSIE", 0x14, 0x14)); 1183 aml_append(sb_scope, build_gsi_link_dev("GSIF", 0x15, 0x15)); 1184 aml_append(sb_scope, build_gsi_link_dev("GSIG", 0x16, 0x16)); 1185 aml_append(sb_scope, build_gsi_link_dev("GSIH", 0x17, 0x17)); 1186 1187 aml_append(table, sb_scope); 1188 } 1189 1190 static Aml *build_q35_dram_controller(const AcpiMcfgInfo *mcfg) 1191 { 1192 Aml *dev; 1193 Aml *resource_template; 1194 1195 /* DRAM controller */ 1196 dev = aml_device("DRAC"); 1197 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0C01"))); 1198 1199 resource_template = aml_resource_template(); 1200 if (mcfg->base + mcfg->size - 1 >= (1ULL << 32)) { 1201 aml_append(resource_template, 1202 aml_qword_memory(AML_POS_DECODE, 1203 AML_MIN_FIXED, 1204 AML_MAX_FIXED, 1205 AML_NON_CACHEABLE, 1206 AML_READ_WRITE, 1207 0x0000000000000000, 1208 mcfg->base, 1209 mcfg->base + mcfg->size - 1, 1210 0x0000000000000000, 1211 mcfg->size)); 1212 } else { 1213 aml_append(resource_template, 1214 aml_dword_memory(AML_POS_DECODE, 1215 AML_MIN_FIXED, 1216 AML_MAX_FIXED, 1217 AML_NON_CACHEABLE, 1218 AML_READ_WRITE, 1219 0x0000000000000000, 1220 mcfg->base, 1221 mcfg->base + mcfg->size - 1, 1222 0x0000000000000000, 1223 mcfg->size)); 1224 } 1225 aml_append(dev, aml_name_decl("_CRS", resource_template)); 1226 1227 return dev; 1228 } 1229 1230 static void build_x86_acpi_pci_hotplug(Aml *table, uint64_t pcihp_addr) 1231 { 1232 Aml *scope; 1233 Aml *field; 1234 Aml *method; 1235 1236 scope = aml_scope("_SB.PCI0"); 1237 1238 aml_append(scope, 1239 aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(pcihp_addr), 0x08)); 1240 field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1241 aml_append(field, aml_named_field("PCIU", 32)); 1242 aml_append(field, aml_named_field("PCID", 32)); 1243 aml_append(scope, field); 1244 1245 aml_append(scope, 1246 aml_operation_region("SEJ", AML_SYSTEM_IO, 1247 aml_int(pcihp_addr + ACPI_PCIHP_SEJ_BASE), 0x04)); 1248 field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1249 aml_append(field, aml_named_field("B0EJ", 32)); 1250 aml_append(scope, field); 1251 1252 aml_append(scope, 1253 aml_operation_region("BNMR", AML_SYSTEM_IO, 1254 aml_int(pcihp_addr + ACPI_PCIHP_BNMR_BASE), 0x08)); 1255 field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1256 aml_append(field, aml_named_field("BNUM", 32)); 1257 aml_append(field, aml_named_field("PIDX", 32)); 1258 aml_append(scope, field); 1259 1260 aml_append(scope, aml_mutex("BLCK", 0)); 1261 1262 method = aml_method("PCEJ", 2, AML_NOTSERIALIZED); 1263 aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF)); 1264 aml_append(method, aml_store(aml_arg(0), aml_name("BNUM"))); 1265 aml_append(method, 1266 aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ"))); 1267 aml_append(method, aml_release(aml_name("BLCK"))); 1268 aml_append(method, aml_return(aml_int(0))); 1269 aml_append(scope, method); 1270 1271 method = aml_method("AIDX", 2, AML_NOTSERIALIZED); 1272 aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF)); 1273 aml_append(method, aml_store(aml_arg(0), aml_name("BNUM"))); 1274 aml_append(method, 1275 aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("PIDX"))); 1276 aml_append(method, aml_store(aml_name("PIDX"), aml_local(0))); 1277 aml_append(method, aml_release(aml_name("BLCK"))); 1278 aml_append(method, aml_return(aml_local(0))); 1279 aml_append(scope, method); 1280 1281 aml_append(scope, aml_pci_pdsm()); 1282 1283 aml_append(table, scope); 1284 } 1285 1286 static Aml *build_q35_osc_method(bool enable_native_pcie_hotplug) 1287 { 1288 Aml *if_ctx; 1289 Aml *if_ctx2; 1290 Aml *else_ctx; 1291 Aml *method; 1292 Aml *a_cwd1 = aml_name("CDW1"); 1293 Aml *a_ctrl = aml_local(0); 1294 1295 method = aml_method("_OSC", 4, AML_NOTSERIALIZED); 1296 aml_append(method, aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1")); 1297 1298 if_ctx = aml_if(aml_equal( 1299 aml_arg(0), aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766"))); 1300 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2")); 1301 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3")); 1302 1303 aml_append(if_ctx, aml_store(aml_name("CDW3"), a_ctrl)); 1304 1305 /* 1306 * Always allow native PME, AER (no dependencies) 1307 * Allow SHPC (PCI bridges can have SHPC controller) 1308 * Disable PCIe Native Hot-plug if ACPI PCI Hot-plug is enabled. 1309 */ 1310 aml_append(if_ctx, aml_and(a_ctrl, 1311 aml_int(0x1E | (enable_native_pcie_hotplug ? 0x1 : 0x0)), a_ctrl)); 1312 1313 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1)))); 1314 /* Unknown revision */ 1315 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x08), a_cwd1)); 1316 aml_append(if_ctx, if_ctx2); 1317 1318 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), a_ctrl))); 1319 /* Capabilities bits were masked */ 1320 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x10), a_cwd1)); 1321 aml_append(if_ctx, if_ctx2); 1322 1323 /* Update DWORD3 in the buffer */ 1324 aml_append(if_ctx, aml_store(a_ctrl, aml_name("CDW3"))); 1325 aml_append(method, if_ctx); 1326 1327 else_ctx = aml_else(); 1328 /* Unrecognized UUID */ 1329 aml_append(else_ctx, aml_or(a_cwd1, aml_int(4), a_cwd1)); 1330 aml_append(method, else_ctx); 1331 1332 aml_append(method, aml_return(aml_arg(3))); 1333 return method; 1334 } 1335 1336 static void build_acpi0017(Aml *table) 1337 { 1338 Aml *dev, *scope, *method; 1339 1340 scope = aml_scope("_SB"); 1341 dev = aml_device("CXLM"); 1342 aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0017"))); 1343 1344 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1345 aml_append(method, aml_return(aml_int(0x01))); 1346 aml_append(dev, method); 1347 1348 aml_append(scope, dev); 1349 aml_append(table, scope); 1350 } 1351 1352 static void 1353 build_dsdt(GArray *table_data, BIOSLinker *linker, 1354 AcpiPmInfo *pm, AcpiMiscInfo *misc, 1355 Range *pci_hole, Range *pci_hole64, MachineState *machine) 1356 { 1357 Object *i440fx = object_resolve_type_unambiguous(TYPE_I440FX_PCI_HOST_BRIDGE); 1358 Object *q35 = object_resolve_type_unambiguous(TYPE_Q35_HOST_DEVICE); 1359 CrsRangeEntry *entry; 1360 Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs; 1361 CrsRangeSet crs_range_set; 1362 PCMachineState *pcms = PC_MACHINE(machine); 1363 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine); 1364 X86MachineState *x86ms = X86_MACHINE(machine); 1365 AcpiMcfgInfo mcfg; 1366 bool mcfg_valid = !!acpi_get_mcfg(&mcfg); 1367 uint32_t nr_mem = machine->ram_slots; 1368 int root_bus_limit = 0xFF; 1369 PCIBus *bus = NULL; 1370 #ifdef CONFIG_TPM 1371 TPMIf *tpm = tpm_find(); 1372 #endif 1373 bool cxl_present = false; 1374 int i; 1375 VMBusBridge *vmbus_bridge = vmbus_bridge_find(); 1376 AcpiTable table = { .sig = "DSDT", .rev = 1, .oem_id = x86ms->oem_id, 1377 .oem_table_id = x86ms->oem_table_id }; 1378 1379 assert(!!i440fx != !!q35); 1380 1381 acpi_table_begin(&table, table_data); 1382 dsdt = init_aml_allocator(); 1383 1384 build_dbg_aml(dsdt); 1385 if (i440fx) { 1386 sb_scope = aml_scope("_SB"); 1387 dev = aml_device("PCI0"); 1388 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); 1389 aml_append(dev, aml_name_decl("_ADR", aml_int(0))); 1390 aml_append(dev, aml_name_decl("_UID", aml_int(pcmc->pci_root_uid))); 1391 aml_append(sb_scope, dev); 1392 aml_append(dsdt, sb_scope); 1393 1394 if (pm->pcihp_bridge_en || pm->pcihp_root_en) { 1395 build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base); 1396 } 1397 build_piix4_pci0_int(dsdt); 1398 } else if (q35) { 1399 sb_scope = aml_scope("_SB"); 1400 dev = aml_device("PCI0"); 1401 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); 1402 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); 1403 aml_append(dev, aml_name_decl("_ADR", aml_int(0))); 1404 aml_append(dev, aml_name_decl("_UID", aml_int(pcmc->pci_root_uid))); 1405 aml_append(dev, build_q35_osc_method(!pm->pcihp_bridge_en)); 1406 aml_append(sb_scope, dev); 1407 if (mcfg_valid) { 1408 aml_append(sb_scope, build_q35_dram_controller(&mcfg)); 1409 } 1410 1411 if (pm->smi_on_cpuhp) { 1412 /* reserve SMI block resources, IO ports 0xB2, 0xB3 */ 1413 dev = aml_device("PCI0.SMI0"); 1414 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06"))); 1415 aml_append(dev, aml_name_decl("_UID", aml_string("SMI resources"))); 1416 crs = aml_resource_template(); 1417 aml_append(crs, 1418 aml_io( 1419 AML_DECODE16, 1420 ACPI_PORT_SMI_CMD, 1421 ACPI_PORT_SMI_CMD, 1422 1, 1423 2) 1424 ); 1425 aml_append(dev, aml_name_decl("_CRS", crs)); 1426 aml_append(dev, aml_operation_region("SMIR", AML_SYSTEM_IO, 1427 aml_int(ACPI_PORT_SMI_CMD), 2)); 1428 field = aml_field("SMIR", AML_BYTE_ACC, AML_NOLOCK, 1429 AML_WRITE_AS_ZEROS); 1430 aml_append(field, aml_named_field("SMIC", 8)); 1431 aml_append(field, aml_reserved_field(8)); 1432 aml_append(dev, field); 1433 aml_append(sb_scope, dev); 1434 } 1435 1436 aml_append(dsdt, sb_scope); 1437 1438 if (pm->pcihp_bridge_en) { 1439 build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base); 1440 } 1441 build_q35_pci0_int(dsdt); 1442 } 1443 1444 if (misc->has_hpet) { 1445 build_hpet_aml(dsdt); 1446 } 1447 1448 if (vmbus_bridge) { 1449 sb_scope = aml_scope("_SB"); 1450 aml_append(sb_scope, build_vmbus_device_aml(vmbus_bridge)); 1451 aml_append(dsdt, sb_scope); 1452 } 1453 1454 scope = aml_scope("_GPE"); 1455 { 1456 aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006"))); 1457 if (machine->nvdimms_state->is_enabled) { 1458 method = aml_method("_E04", 0, AML_NOTSERIALIZED); 1459 aml_append(method, aml_notify(aml_name("\\_SB.NVDR"), 1460 aml_int(0x80))); 1461 aml_append(scope, method); 1462 } 1463 } 1464 aml_append(dsdt, scope); 1465 1466 if (pcmc->legacy_cpu_hotplug) { 1467 build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base); 1468 } else { 1469 CPUHotplugFeatures opts = { 1470 .acpi_1_compatible = true, .has_legacy_cphp = true, 1471 .smi_path = pm->smi_on_cpuhp ? "\\_SB.PCI0.SMI0.SMIC" : NULL, 1472 .fw_unplugs_cpu = pm->smi_on_cpu_unplug, 1473 }; 1474 build_cpus_aml(dsdt, machine, opts, pm->cpu_hp_io_base, 1475 "\\_SB.PCI0", "\\_GPE._E02"); 1476 } 1477 1478 if (pcms->memhp_io_base && nr_mem) { 1479 build_memory_hotplug_aml(dsdt, nr_mem, "\\_SB.PCI0", 1480 "\\_GPE._E03", AML_SYSTEM_IO, 1481 pcms->memhp_io_base); 1482 } 1483 1484 crs_range_set_init(&crs_range_set); 1485 bus = PC_MACHINE(machine)->bus; 1486 if (bus) { 1487 QLIST_FOREACH(bus, &bus->child, sibling) { 1488 uint8_t bus_num = pci_bus_num(bus); 1489 uint8_t numa_node = pci_bus_numa_node(bus); 1490 1491 /* look only for expander root buses */ 1492 if (!pci_bus_is_root(bus)) { 1493 continue; 1494 } 1495 1496 if (bus_num < root_bus_limit) { 1497 root_bus_limit = bus_num - 1; 1498 } 1499 1500 scope = aml_scope("\\_SB"); 1501 1502 if (pci_bus_is_cxl(bus)) { 1503 dev = aml_device("CL%.02X", bus_num); 1504 } else { 1505 dev = aml_device("PC%.02X", bus_num); 1506 } 1507 aml_append(dev, aml_name_decl("_UID", aml_int(bus_num))); 1508 aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); 1509 if (pci_bus_is_cxl(bus)) { 1510 struct Aml *pkg = aml_package(2); 1511 1512 aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0016"))); 1513 aml_append(pkg, aml_eisaid("PNP0A08")); 1514 aml_append(pkg, aml_eisaid("PNP0A03")); 1515 aml_append(dev, aml_name_decl("_CID", pkg)); 1516 aml_append(dev, aml_name_decl("_ADR", aml_int(0))); 1517 build_cxl_osc_method(dev); 1518 } else if (pci_bus_is_express(bus)) { 1519 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); 1520 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); 1521 1522 /* Expander bridges do not have ACPI PCI Hot-plug enabled */ 1523 aml_append(dev, build_q35_osc_method(true)); 1524 } else { 1525 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); 1526 } 1527 1528 if (numa_node != NUMA_NODE_UNASSIGNED) { 1529 aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node))); 1530 } 1531 1532 aml_append(dev, build_prt(false)); 1533 crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set, 1534 0, 0, 0, 0); 1535 aml_append(dev, aml_name_decl("_CRS", crs)); 1536 aml_append(scope, dev); 1537 aml_append(dsdt, scope); 1538 1539 /* Handle the ranges for the PXB expanders */ 1540 if (pci_bus_is_cxl(bus)) { 1541 MemoryRegion *mr = &pcms->cxl_devices_state.host_mr; 1542 uint64_t base = mr->addr; 1543 1544 cxl_present = true; 1545 crs_range_insert(crs_range_set.mem_ranges, base, 1546 base + memory_region_size(mr) - 1); 1547 } 1548 } 1549 } 1550 1551 if (cxl_present) { 1552 build_acpi0017(dsdt); 1553 } 1554 1555 /* 1556 * At this point crs_range_set has all the ranges used by pci 1557 * busses *other* than PCI0. These ranges will be excluded from 1558 * the PCI0._CRS. Add mmconfig to the set so it will be excluded 1559 * too. 1560 */ 1561 if (mcfg_valid) { 1562 crs_range_insert(crs_range_set.mem_ranges, 1563 mcfg.base, mcfg.base + mcfg.size - 1); 1564 } 1565 1566 scope = aml_scope("\\_SB.PCI0"); 1567 /* build PCI0._CRS */ 1568 crs = aml_resource_template(); 1569 aml_append(crs, 1570 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, 1571 0x0000, 0x0, root_bus_limit, 1572 0x0000, root_bus_limit + 1)); 1573 aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08)); 1574 1575 aml_append(crs, 1576 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 1577 AML_POS_DECODE, AML_ENTIRE_RANGE, 1578 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8)); 1579 1580 crs_replace_with_free_ranges(crs_range_set.io_ranges, 0x0D00, 0xFFFF); 1581 for (i = 0; i < crs_range_set.io_ranges->len; i++) { 1582 entry = g_ptr_array_index(crs_range_set.io_ranges, i); 1583 aml_append(crs, 1584 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 1585 AML_POS_DECODE, AML_ENTIRE_RANGE, 1586 0x0000, entry->base, entry->limit, 1587 0x0000, entry->limit - entry->base + 1)); 1588 } 1589 1590 aml_append(crs, 1591 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 1592 AML_CACHEABLE, AML_READ_WRITE, 1593 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000)); 1594 1595 crs_replace_with_free_ranges(crs_range_set.mem_ranges, 1596 range_lob(pci_hole), 1597 range_upb(pci_hole)); 1598 for (i = 0; i < crs_range_set.mem_ranges->len; i++) { 1599 entry = g_ptr_array_index(crs_range_set.mem_ranges, i); 1600 aml_append(crs, 1601 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 1602 AML_NON_CACHEABLE, AML_READ_WRITE, 1603 0, entry->base, entry->limit, 1604 0, entry->limit - entry->base + 1)); 1605 } 1606 1607 if (!range_is_empty(pci_hole64)) { 1608 crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges, 1609 range_lob(pci_hole64), 1610 range_upb(pci_hole64)); 1611 for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) { 1612 entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i); 1613 aml_append(crs, 1614 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, 1615 AML_MAX_FIXED, 1616 AML_CACHEABLE, AML_READ_WRITE, 1617 0, entry->base, entry->limit, 1618 0, entry->limit - entry->base + 1)); 1619 } 1620 } 1621 1622 #ifdef CONFIG_TPM 1623 if (TPM_IS_TIS_ISA(tpm_find())) { 1624 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE, 1625 TPM_TIS_ADDR_SIZE, AML_READ_WRITE)); 1626 } 1627 #endif 1628 aml_append(scope, aml_name_decl("_CRS", crs)); 1629 1630 /* reserve GPE0 block resources */ 1631 dev = aml_device("GPE0"); 1632 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 1633 aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources"))); 1634 /* device present, functioning, decoding, not shown in UI */ 1635 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 1636 crs = aml_resource_template(); 1637 aml_append(crs, 1638 aml_io( 1639 AML_DECODE16, 1640 pm->fadt.gpe0_blk.address, 1641 pm->fadt.gpe0_blk.address, 1642 1, 1643 pm->fadt.gpe0_blk.bit_width / 8) 1644 ); 1645 aml_append(dev, aml_name_decl("_CRS", crs)); 1646 aml_append(scope, dev); 1647 1648 crs_range_set_free(&crs_range_set); 1649 1650 /* reserve PCIHP resources */ 1651 if (pm->pcihp_io_len && (pm->pcihp_bridge_en || pm->pcihp_root_en)) { 1652 dev = aml_device("PHPR"); 1653 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 1654 aml_append(dev, 1655 aml_name_decl("_UID", aml_string("PCI Hotplug resources"))); 1656 /* device present, functioning, decoding, not shown in UI */ 1657 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 1658 crs = aml_resource_template(); 1659 aml_append(crs, 1660 aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1, 1661 pm->pcihp_io_len) 1662 ); 1663 aml_append(dev, aml_name_decl("_CRS", crs)); 1664 aml_append(scope, dev); 1665 } 1666 aml_append(dsdt, scope); 1667 1668 /* create S3_ / S4_ / S5_ packages if necessary */ 1669 scope = aml_scope("\\"); 1670 if (!pm->s3_disabled) { 1671 pkg = aml_package(4); 1672 aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */ 1673 aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ 1674 aml_append(pkg, aml_int(0)); /* reserved */ 1675 aml_append(pkg, aml_int(0)); /* reserved */ 1676 aml_append(scope, aml_name_decl("_S3", pkg)); 1677 } 1678 1679 if (!pm->s4_disabled) { 1680 pkg = aml_package(4); 1681 aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */ 1682 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ 1683 aml_append(pkg, aml_int(pm->s4_val)); 1684 aml_append(pkg, aml_int(0)); /* reserved */ 1685 aml_append(pkg, aml_int(0)); /* reserved */ 1686 aml_append(scope, aml_name_decl("_S4", pkg)); 1687 } 1688 1689 pkg = aml_package(4); 1690 aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */ 1691 aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */ 1692 aml_append(pkg, aml_int(0)); /* reserved */ 1693 aml_append(pkg, aml_int(0)); /* reserved */ 1694 aml_append(scope, aml_name_decl("_S5", pkg)); 1695 aml_append(dsdt, scope); 1696 1697 /* create fw_cfg node, unconditionally */ 1698 { 1699 scope = aml_scope("\\_SB.PCI0"); 1700 fw_cfg_add_acpi_dsdt(scope, x86ms->fw_cfg); 1701 aml_append(dsdt, scope); 1702 } 1703 1704 sb_scope = aml_scope("\\_SB"); 1705 { 1706 Object *pci_host = acpi_get_i386_pci_host(); 1707 1708 if (pci_host) { 1709 PCIBus *bus = PCI_HOST_BRIDGE(pci_host)->bus; 1710 Aml *scope = aml_scope("PCI0"); 1711 /* Scan all PCI buses. Generate tables to support hotplug. */ 1712 build_append_pci_bus_devices(scope, bus); 1713 aml_append(sb_scope, scope); 1714 } 1715 } 1716 1717 #ifdef CONFIG_TPM 1718 if (TPM_IS_CRB(tpm)) { 1719 dev = aml_device("TPM"); 1720 aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); 1721 aml_append(dev, aml_name_decl("_STR", 1722 aml_string("TPM 2.0 Device"))); 1723 crs = aml_resource_template(); 1724 aml_append(crs, aml_memory32_fixed(TPM_CRB_ADDR_BASE, 1725 TPM_CRB_ADDR_SIZE, AML_READ_WRITE)); 1726 aml_append(dev, aml_name_decl("_CRS", crs)); 1727 1728 aml_append(dev, aml_name_decl("_STA", aml_int(0xf))); 1729 aml_append(dev, aml_name_decl("_UID", aml_int(1))); 1730 1731 tpm_build_ppi_acpi(tpm, dev); 1732 1733 aml_append(sb_scope, dev); 1734 } 1735 #endif 1736 1737 if (pcms->sgx_epc.size != 0) { 1738 uint64_t epc_base = pcms->sgx_epc.base; 1739 uint64_t epc_size = pcms->sgx_epc.size; 1740 1741 dev = aml_device("EPC"); 1742 aml_append(dev, aml_name_decl("_HID", aml_eisaid("INT0E0C"))); 1743 aml_append(dev, aml_name_decl("_STR", 1744 aml_unicode("Enclave Page Cache 1.0"))); 1745 crs = aml_resource_template(); 1746 aml_append(crs, 1747 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, 1748 AML_MAX_FIXED, AML_NON_CACHEABLE, 1749 AML_READ_WRITE, 0, epc_base, 1750 epc_base + epc_size - 1, 0, epc_size)); 1751 aml_append(dev, aml_name_decl("_CRS", crs)); 1752 1753 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1754 aml_append(method, aml_return(aml_int(0x0f))); 1755 aml_append(dev, method); 1756 1757 aml_append(sb_scope, dev); 1758 } 1759 aml_append(dsdt, sb_scope); 1760 1761 if (pm->pcihp_bridge_en || pm->pcihp_root_en) { 1762 bool has_pcnt; 1763 1764 Object *pci_host = acpi_get_i386_pci_host(); 1765 PCIBus *bus = PCI_HOST_BRIDGE(pci_host)->bus; 1766 1767 scope = aml_scope("\\_SB.PCI0"); 1768 has_pcnt = build_append_notfication_callback(scope, bus); 1769 if (has_pcnt) { 1770 aml_append(dsdt, scope); 1771 } 1772 1773 scope = aml_scope("_GPE"); 1774 { 1775 method = aml_method("_E01", 0, AML_NOTSERIALIZED); 1776 if (has_pcnt) { 1777 aml_append(method, 1778 aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF)); 1779 aml_append(method, aml_call0("\\_SB.PCI0.PCNT")); 1780 aml_append(method, aml_release(aml_name("\\_SB.PCI0.BLCK"))); 1781 } 1782 aml_append(scope, method); 1783 } 1784 aml_append(dsdt, scope); 1785 } 1786 1787 /* copy AML table into ACPI tables blob and patch header there */ 1788 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); 1789 acpi_table_end(linker, &table); 1790 free_aml_allocator(); 1791 } 1792 1793 /* 1794 * IA-PC HPET (High Precision Event Timers) Specification (Revision: 1.0a) 1795 * 3.2.4The ACPI 2.0 HPET Description Table (HPET) 1796 */ 1797 static void 1798 build_hpet(GArray *table_data, BIOSLinker *linker, const char *oem_id, 1799 const char *oem_table_id) 1800 { 1801 AcpiTable table = { .sig = "HPET", .rev = 1, 1802 .oem_id = oem_id, .oem_table_id = oem_table_id }; 1803 1804 acpi_table_begin(&table, table_data); 1805 /* Note timer_block_id value must be kept in sync with value advertised by 1806 * emulated hpet 1807 */ 1808 /* Event Timer Block ID */ 1809 build_append_int_noprefix(table_data, 0x8086a201, 4); 1810 /* BASE_ADDRESS */ 1811 build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 0, 0, 0, HPET_BASE); 1812 /* HPET Number */ 1813 build_append_int_noprefix(table_data, 0, 1); 1814 /* Main Counter Minimum Clock_tick in Periodic Mode */ 1815 build_append_int_noprefix(table_data, 0, 2); 1816 /* Page Protection And OEM Attribute */ 1817 build_append_int_noprefix(table_data, 0, 1); 1818 acpi_table_end(linker, &table); 1819 } 1820 1821 #ifdef CONFIG_TPM 1822 /* 1823 * TCPA Description Table 1824 * 1825 * Following Level 00, Rev 00.37 of specs: 1826 * http://www.trustedcomputinggroup.org/resources/tcg_acpi_specification 1827 * 7.1.2 ACPI Table Layout 1828 */ 1829 static void 1830 build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog, 1831 const char *oem_id, const char *oem_table_id) 1832 { 1833 unsigned log_addr_offset; 1834 AcpiTable table = { .sig = "TCPA", .rev = 2, 1835 .oem_id = oem_id, .oem_table_id = oem_table_id }; 1836 1837 acpi_table_begin(&table, table_data); 1838 /* Platform Class */ 1839 build_append_int_noprefix(table_data, TPM_TCPA_ACPI_CLASS_CLIENT, 2); 1840 /* Log Area Minimum Length (LAML) */ 1841 build_append_int_noprefix(table_data, TPM_LOG_AREA_MINIMUM_SIZE, 4); 1842 /* Log Area Start Address (LASA) */ 1843 log_addr_offset = table_data->len; 1844 build_append_int_noprefix(table_data, 0, 8); 1845 1846 /* allocate/reserve space for TPM log area */ 1847 acpi_data_push(tcpalog, TPM_LOG_AREA_MINIMUM_SIZE); 1848 bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, tcpalog, 1, 1849 false /* high memory */); 1850 /* log area start address to be filled by Guest linker */ 1851 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, 1852 log_addr_offset, 8, ACPI_BUILD_TPMLOG_FILE, 0); 1853 1854 acpi_table_end(linker, &table); 1855 } 1856 #endif 1857 1858 #define HOLE_640K_START (640 * KiB) 1859 #define HOLE_640K_END (1 * MiB) 1860 1861 /* 1862 * ACPI spec, Revision 3.0 1863 * 5.2.15 System Resource Affinity Table (SRAT) 1864 */ 1865 static void 1866 build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) 1867 { 1868 int i; 1869 int numa_mem_start, slots; 1870 uint64_t mem_len, mem_base, next_base; 1871 MachineClass *mc = MACHINE_GET_CLASS(machine); 1872 X86MachineState *x86ms = X86_MACHINE(machine); 1873 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine); 1874 PCMachineState *pcms = PC_MACHINE(machine); 1875 int nb_numa_nodes = machine->numa_state->num_nodes; 1876 NodeInfo *numa_info = machine->numa_state->nodes; 1877 ram_addr_t hotpluggable_address_space_size = 1878 object_property_get_int(OBJECT(pcms), PC_MACHINE_DEVMEM_REGION_SIZE, 1879 NULL); 1880 AcpiTable table = { .sig = "SRAT", .rev = 1, .oem_id = x86ms->oem_id, 1881 .oem_table_id = x86ms->oem_table_id }; 1882 1883 acpi_table_begin(&table, table_data); 1884 build_append_int_noprefix(table_data, 1, 4); /* Reserved */ 1885 build_append_int_noprefix(table_data, 0, 8); /* Reserved */ 1886 1887 for (i = 0; i < apic_ids->len; i++) { 1888 int node_id = apic_ids->cpus[i].props.node_id; 1889 uint32_t apic_id = apic_ids->cpus[i].arch_id; 1890 1891 if (apic_id < 255) { 1892 /* 5.2.15.1 Processor Local APIC/SAPIC Affinity Structure */ 1893 build_append_int_noprefix(table_data, 0, 1); /* Type */ 1894 build_append_int_noprefix(table_data, 16, 1); /* Length */ 1895 /* Proximity Domain [7:0] */ 1896 build_append_int_noprefix(table_data, node_id, 1); 1897 build_append_int_noprefix(table_data, apic_id, 1); /* APIC ID */ 1898 /* Flags, Table 5-36 */ 1899 build_append_int_noprefix(table_data, 1, 4); 1900 build_append_int_noprefix(table_data, 0, 1); /* Local SAPIC EID */ 1901 /* Proximity Domain [31:8] */ 1902 build_append_int_noprefix(table_data, 0, 3); 1903 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 1904 } else { 1905 /* 1906 * ACPI spec, Revision 4.0 1907 * 5.2.16.3 Processor Local x2APIC Affinity Structure 1908 */ 1909 build_append_int_noprefix(table_data, 2, 1); /* Type */ 1910 build_append_int_noprefix(table_data, 24, 1); /* Length */ 1911 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 1912 /* Proximity Domain */ 1913 build_append_int_noprefix(table_data, node_id, 4); 1914 build_append_int_noprefix(table_data, apic_id, 4); /* X2APIC ID */ 1915 /* Flags, Table 5-39 */ 1916 build_append_int_noprefix(table_data, 1 /* Enabled */, 4); 1917 build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */ 1918 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 1919 } 1920 } 1921 1922 /* the memory map is a bit tricky, it contains at least one hole 1923 * from 640k-1M and possibly another one from 3.5G-4G. 1924 */ 1925 next_base = 0; 1926 numa_mem_start = table_data->len; 1927 1928 for (i = 1; i < nb_numa_nodes + 1; ++i) { 1929 mem_base = next_base; 1930 mem_len = numa_info[i - 1].node_mem; 1931 next_base = mem_base + mem_len; 1932 1933 /* Cut out the 640K hole */ 1934 if (mem_base <= HOLE_640K_START && 1935 next_base > HOLE_640K_START) { 1936 mem_len -= next_base - HOLE_640K_START; 1937 if (mem_len > 0) { 1938 build_srat_memory(table_data, mem_base, mem_len, i - 1, 1939 MEM_AFFINITY_ENABLED); 1940 } 1941 1942 /* Check for the rare case: 640K < RAM < 1M */ 1943 if (next_base <= HOLE_640K_END) { 1944 next_base = HOLE_640K_END; 1945 continue; 1946 } 1947 mem_base = HOLE_640K_END; 1948 mem_len = next_base - HOLE_640K_END; 1949 } 1950 1951 /* Cut out the ACPI_PCI hole */ 1952 if (mem_base <= x86ms->below_4g_mem_size && 1953 next_base > x86ms->below_4g_mem_size) { 1954 mem_len -= next_base - x86ms->below_4g_mem_size; 1955 if (mem_len > 0) { 1956 build_srat_memory(table_data, mem_base, mem_len, i - 1, 1957 MEM_AFFINITY_ENABLED); 1958 } 1959 mem_base = x86ms->above_4g_mem_start; 1960 mem_len = next_base - x86ms->below_4g_mem_size; 1961 next_base = mem_base + mem_len; 1962 } 1963 1964 if (mem_len > 0) { 1965 build_srat_memory(table_data, mem_base, mem_len, i - 1, 1966 MEM_AFFINITY_ENABLED); 1967 } 1968 } 1969 1970 if (machine->nvdimms_state->is_enabled) { 1971 nvdimm_build_srat(table_data); 1972 } 1973 1974 sgx_epc_build_srat(table_data); 1975 1976 /* 1977 * TODO: this part is not in ACPI spec and current linux kernel boots fine 1978 * without these entries. But I recall there were issues the last time I 1979 * tried to remove it with some ancient guest OS, however I can't remember 1980 * what that was so keep this around for now 1981 */ 1982 slots = (table_data->len - numa_mem_start) / 40 /* mem affinity len */; 1983 for (; slots < nb_numa_nodes + 2; slots++) { 1984 build_srat_memory(table_data, 0, 0, 0, MEM_AFFINITY_NOFLAGS); 1985 } 1986 1987 /* 1988 * Entry is required for Windows to enable memory hotplug in OS 1989 * and for Linux to enable SWIOTLB when booted with less than 1990 * 4G of RAM. Windows works better if the entry sets proximity 1991 * to the highest NUMA node in the machine. 1992 * Memory devices may override proximity set by this entry, 1993 * providing _PXM method if necessary. 1994 */ 1995 if (hotpluggable_address_space_size) { 1996 build_srat_memory(table_data, machine->device_memory->base, 1997 hotpluggable_address_space_size, nb_numa_nodes - 1, 1998 MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); 1999 } 2000 2001 acpi_table_end(linker, &table); 2002 } 2003 2004 /* 2005 * Insert DMAR scope for PCI bridges and endpoint devcie 2006 */ 2007 static void 2008 insert_scope(PCIBus *bus, PCIDevice *dev, void *opaque) 2009 { 2010 const size_t device_scope_size = 6 /* device scope structure */ + 2011 2 /* 1 path entry */; 2012 GArray *scope_blob = opaque; 2013 2014 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { 2015 /* Dmar Scope Type: 0x02 for PCI Bridge */ 2016 build_append_int_noprefix(scope_blob, 0x02, 1); 2017 } else { 2018 /* Dmar Scope Type: 0x01 for PCI Endpoint Device */ 2019 build_append_int_noprefix(scope_blob, 0x01, 1); 2020 } 2021 2022 /* length */ 2023 build_append_int_noprefix(scope_blob, device_scope_size, 1); 2024 /* reserved */ 2025 build_append_int_noprefix(scope_blob, 0, 2); 2026 /* enumeration_id */ 2027 build_append_int_noprefix(scope_blob, 0, 1); 2028 /* bus */ 2029 build_append_int_noprefix(scope_blob, pci_bus_num(bus), 1); 2030 /* device */ 2031 build_append_int_noprefix(scope_blob, PCI_SLOT(dev->devfn), 1); 2032 /* function */ 2033 build_append_int_noprefix(scope_blob, PCI_FUNC(dev->devfn), 1); 2034 } 2035 2036 /* For a given PCI host bridge, walk and insert DMAR scope */ 2037 static int 2038 dmar_host_bridges(Object *obj, void *opaque) 2039 { 2040 GArray *scope_blob = opaque; 2041 2042 if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) { 2043 PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus; 2044 2045 if (bus && !pci_bus_bypass_iommu(bus)) { 2046 pci_for_each_device_under_bus(bus, insert_scope, scope_blob); 2047 } 2048 } 2049 2050 return 0; 2051 } 2052 2053 /* 2054 * Intel ® Virtualization Technology for Directed I/O 2055 * Architecture Specification. Revision 3.3 2056 * 8.1 DMA Remapping Reporting Structure 2057 */ 2058 static void 2059 build_dmar_q35(GArray *table_data, BIOSLinker *linker, const char *oem_id, 2060 const char *oem_table_id) 2061 { 2062 uint8_t dmar_flags = 0; 2063 uint8_t rsvd10[10] = {}; 2064 /* Root complex IOAPIC uses one path only */ 2065 const size_t ioapic_scope_size = 6 /* device scope structure */ + 2066 2 /* 1 path entry */; 2067 X86IOMMUState *iommu = x86_iommu_get_default(); 2068 IntelIOMMUState *intel_iommu = INTEL_IOMMU_DEVICE(iommu); 2069 GArray *scope_blob = g_array_new(false, true, 1); 2070 2071 AcpiTable table = { .sig = "DMAR", .rev = 1, .oem_id = oem_id, 2072 .oem_table_id = oem_table_id }; 2073 2074 /* 2075 * A PCI bus walk, for each PCI host bridge. 2076 * Insert scope for each PCI bridge and endpoint device which 2077 * is attached to a bus with iommu enabled. 2078 */ 2079 object_child_foreach_recursive(object_get_root(), 2080 dmar_host_bridges, scope_blob); 2081 2082 assert(iommu); 2083 if (x86_iommu_ir_supported(iommu)) { 2084 dmar_flags |= 0x1; /* Flags: 0x1: INT_REMAP */ 2085 } 2086 2087 acpi_table_begin(&table, table_data); 2088 /* Host Address Width */ 2089 build_append_int_noprefix(table_data, intel_iommu->aw_bits - 1, 1); 2090 build_append_int_noprefix(table_data, dmar_flags, 1); /* Flags */ 2091 g_array_append_vals(table_data, rsvd10, sizeof(rsvd10)); /* Reserved */ 2092 2093 /* 8.3 DMAR Remapping Hardware Unit Definition structure */ 2094 build_append_int_noprefix(table_data, 0, 2); /* Type */ 2095 /* Length */ 2096 build_append_int_noprefix(table_data, 2097 16 + ioapic_scope_size + scope_blob->len, 2); 2098 /* Flags */ 2099 build_append_int_noprefix(table_data, 0 /* Don't include all pci device */ , 2100 1); 2101 build_append_int_noprefix(table_data, 0 , 1); /* Reserved */ 2102 build_append_int_noprefix(table_data, 0 , 2); /* Segment Number */ 2103 /* Register Base Address */ 2104 build_append_int_noprefix(table_data, Q35_HOST_BRIDGE_IOMMU_ADDR , 8); 2105 2106 /* Scope definition for the root-complex IOAPIC. See VT-d spec 2107 * 8.3.1 (version Oct. 2014 or later). */ 2108 build_append_int_noprefix(table_data, 0x03 /* IOAPIC */, 1); /* Type */ 2109 build_append_int_noprefix(table_data, ioapic_scope_size, 1); /* Length */ 2110 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 2111 /* Enumeration ID */ 2112 build_append_int_noprefix(table_data, ACPI_BUILD_IOAPIC_ID, 1); 2113 /* Start Bus Number */ 2114 build_append_int_noprefix(table_data, Q35_PSEUDO_BUS_PLATFORM, 1); 2115 /* Path, {Device, Function} pair */ 2116 build_append_int_noprefix(table_data, PCI_SLOT(Q35_PSEUDO_DEVFN_IOAPIC), 1); 2117 build_append_int_noprefix(table_data, PCI_FUNC(Q35_PSEUDO_DEVFN_IOAPIC), 1); 2118 2119 /* Add scope found above */ 2120 g_array_append_vals(table_data, scope_blob->data, scope_blob->len); 2121 g_array_free(scope_blob, true); 2122 2123 if (iommu->dt_supported) { 2124 /* 8.5 Root Port ATS Capability Reporting Structure */ 2125 build_append_int_noprefix(table_data, 2, 2); /* Type */ 2126 build_append_int_noprefix(table_data, 8, 2); /* Length */ 2127 build_append_int_noprefix(table_data, 1 /* ALL_PORTS */, 1); /* Flags */ 2128 build_append_int_noprefix(table_data, 0, 1); /* Reserved */ 2129 build_append_int_noprefix(table_data, 0, 2); /* Segment Number */ 2130 } 2131 2132 acpi_table_end(linker, &table); 2133 } 2134 2135 /* 2136 * Windows ACPI Emulated Devices Table 2137 * (Version 1.0 - April 6, 2009) 2138 * Spec: http://download.microsoft.com/download/7/E/7/7E7662CF-CBEA-470B-A97E-CE7CE0D98DC2/WAET.docx 2139 * 2140 * Helpful to speedup Windows guests and ignored by others. 2141 */ 2142 static void 2143 build_waet(GArray *table_data, BIOSLinker *linker, const char *oem_id, 2144 const char *oem_table_id) 2145 { 2146 AcpiTable table = { .sig = "WAET", .rev = 1, .oem_id = oem_id, 2147 .oem_table_id = oem_table_id }; 2148 2149 acpi_table_begin(&table, table_data); 2150 /* 2151 * Set "ACPI PM timer good" flag. 2152 * 2153 * Tells Windows guests that our ACPI PM timer is reliable in the 2154 * sense that guest can read it only once to obtain a reliable value. 2155 * Which avoids costly VMExits caused by guest re-reading it unnecessarily. 2156 */ 2157 build_append_int_noprefix(table_data, 1 << 1 /* ACPI PM timer good */, 4); 2158 acpi_table_end(linker, &table); 2159 } 2160 2161 /* 2162 * IVRS table as specified in AMD IOMMU Specification v2.62, Section 5.2 2163 * accessible here http://support.amd.com/TechDocs/48882_IOMMU.pdf 2164 */ 2165 #define IOAPIC_SB_DEVID (uint64_t)PCI_BUILD_BDF(0, PCI_DEVFN(0x14, 0)) 2166 2167 /* 2168 * Insert IVHD entry for device and recurse, insert alias, or insert range as 2169 * necessary for the PCI topology. 2170 */ 2171 static void 2172 insert_ivhd(PCIBus *bus, PCIDevice *dev, void *opaque) 2173 { 2174 GArray *table_data = opaque; 2175 uint32_t entry; 2176 2177 /* "Select" IVHD entry, type 0x2 */ 2178 entry = PCI_BUILD_BDF(pci_bus_num(bus), dev->devfn) << 8 | 0x2; 2179 build_append_int_noprefix(table_data, entry, 4); 2180 2181 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { 2182 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(dev)); 2183 uint8_t sec = pci_bus_num(sec_bus); 2184 uint8_t sub = dev->config[PCI_SUBORDINATE_BUS]; 2185 2186 if (pci_bus_is_express(sec_bus)) { 2187 /* 2188 * Walk the bus if there are subordinates, otherwise use a range 2189 * to cover an entire leaf bus. We could potentially also use a 2190 * range for traversed buses, but we'd need to take care not to 2191 * create both Select and Range entries covering the same device. 2192 * This is easier and potentially more compact. 2193 * 2194 * An example bare metal system seems to use Select entries for 2195 * root ports without a slot (ie. built-ins) and Range entries 2196 * when there is a slot. The same system also only hard-codes 2197 * the alias range for an onboard PCIe-to-PCI bridge, apparently 2198 * making no effort to support nested bridges. We attempt to 2199 * be more thorough here. 2200 */ 2201 if (sec == sub) { /* leaf bus */ 2202 /* "Start of Range" IVHD entry, type 0x3 */ 2203 entry = PCI_BUILD_BDF(sec, PCI_DEVFN(0, 0)) << 8 | 0x3; 2204 build_append_int_noprefix(table_data, entry, 4); 2205 /* "End of Range" IVHD entry, type 0x4 */ 2206 entry = PCI_BUILD_BDF(sub, PCI_DEVFN(31, 7)) << 8 | 0x4; 2207 build_append_int_noprefix(table_data, entry, 4); 2208 } else { 2209 pci_for_each_device(sec_bus, sec, insert_ivhd, table_data); 2210 } 2211 } else { 2212 /* 2213 * If the secondary bus is conventional, then we need to create an 2214 * Alias range for everything downstream. The range covers the 2215 * first devfn on the secondary bus to the last devfn on the 2216 * subordinate bus. The alias target depends on legacy versus 2217 * express bridges, just as in pci_device_iommu_address_space(). 2218 * DeviceIDa vs DeviceIDb as per the AMD IOMMU spec. 2219 */ 2220 uint16_t dev_id_a, dev_id_b; 2221 2222 dev_id_a = PCI_BUILD_BDF(sec, PCI_DEVFN(0, 0)); 2223 2224 if (pci_is_express(dev) && 2225 pcie_cap_get_type(dev) == PCI_EXP_TYPE_PCI_BRIDGE) { 2226 dev_id_b = dev_id_a; 2227 } else { 2228 dev_id_b = PCI_BUILD_BDF(pci_bus_num(bus), dev->devfn); 2229 } 2230 2231 /* "Alias Start of Range" IVHD entry, type 0x43, 8 bytes */ 2232 build_append_int_noprefix(table_data, dev_id_a << 8 | 0x43, 4); 2233 build_append_int_noprefix(table_data, dev_id_b << 8 | 0x0, 4); 2234 2235 /* "End of Range" IVHD entry, type 0x4 */ 2236 entry = PCI_BUILD_BDF(sub, PCI_DEVFN(31, 7)) << 8 | 0x4; 2237 build_append_int_noprefix(table_data, entry, 4); 2238 } 2239 } 2240 } 2241 2242 /* For all PCI host bridges, walk and insert IVHD entries */ 2243 static int 2244 ivrs_host_bridges(Object *obj, void *opaque) 2245 { 2246 GArray *ivhd_blob = opaque; 2247 2248 if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) { 2249 PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus; 2250 2251 if (bus && !pci_bus_bypass_iommu(bus)) { 2252 pci_for_each_device_under_bus(bus, insert_ivhd, ivhd_blob); 2253 } 2254 } 2255 2256 return 0; 2257 } 2258 2259 static void 2260 build_amd_iommu(GArray *table_data, BIOSLinker *linker, const char *oem_id, 2261 const char *oem_table_id) 2262 { 2263 int ivhd_table_len = 24; 2264 AMDVIState *s = AMD_IOMMU_DEVICE(x86_iommu_get_default()); 2265 GArray *ivhd_blob = g_array_new(false, true, 1); 2266 AcpiTable table = { .sig = "IVRS", .rev = 1, .oem_id = oem_id, 2267 .oem_table_id = oem_table_id }; 2268 2269 acpi_table_begin(&table, table_data); 2270 /* IVinfo - IO virtualization information common to all 2271 * IOMMU units in a system 2272 */ 2273 build_append_int_noprefix(table_data, 40UL << 8/* PASize */, 4); 2274 /* reserved */ 2275 build_append_int_noprefix(table_data, 0, 8); 2276 2277 /* IVHD definition - type 10h */ 2278 build_append_int_noprefix(table_data, 0x10, 1); 2279 /* virtualization flags */ 2280 build_append_int_noprefix(table_data, 2281 (1UL << 0) | /* HtTunEn */ 2282 (1UL << 4) | /* iotblSup */ 2283 (1UL << 6) | /* PrefSup */ 2284 (1UL << 7), /* PPRSup */ 2285 1); 2286 2287 /* 2288 * A PCI bus walk, for each PCI host bridge, is necessary to create a 2289 * complete set of IVHD entries. Do this into a separate blob so that we 2290 * can calculate the total IVRS table length here and then append the new 2291 * blob further below. Fall back to an entry covering all devices, which 2292 * is sufficient when no aliases are present. 2293 */ 2294 object_child_foreach_recursive(object_get_root(), 2295 ivrs_host_bridges, ivhd_blob); 2296 2297 if (!ivhd_blob->len) { 2298 /* 2299 * Type 1 device entry reporting all devices 2300 * These are 4-byte device entries currently reporting the range of 2301 * Refer to Spec - Table 95:IVHD Device Entry Type Codes(4-byte) 2302 */ 2303 build_append_int_noprefix(ivhd_blob, 0x0000001, 4); 2304 } 2305 2306 ivhd_table_len += ivhd_blob->len; 2307 2308 /* 2309 * When interrupt remapping is supported, we add a special IVHD device 2310 * for type IO-APIC. 2311 */ 2312 if (x86_iommu_ir_supported(x86_iommu_get_default())) { 2313 ivhd_table_len += 8; 2314 } 2315 2316 /* IVHD length */ 2317 build_append_int_noprefix(table_data, ivhd_table_len, 2); 2318 /* DeviceID */ 2319 build_append_int_noprefix(table_data, s->devid, 2); 2320 /* Capability offset */ 2321 build_append_int_noprefix(table_data, s->capab_offset, 2); 2322 /* IOMMU base address */ 2323 build_append_int_noprefix(table_data, s->mmio.addr, 8); 2324 /* PCI Segment Group */ 2325 build_append_int_noprefix(table_data, 0, 2); 2326 /* IOMMU info */ 2327 build_append_int_noprefix(table_data, 0, 2); 2328 /* IOMMU Feature Reporting */ 2329 build_append_int_noprefix(table_data, 2330 (48UL << 30) | /* HATS */ 2331 (48UL << 28) | /* GATS */ 2332 (1UL << 2) | /* GTSup */ 2333 (1UL << 6), /* GASup */ 2334 4); 2335 2336 /* IVHD entries as found above */ 2337 g_array_append_vals(table_data, ivhd_blob->data, ivhd_blob->len); 2338 g_array_free(ivhd_blob, TRUE); 2339 2340 /* 2341 * Add a special IVHD device type. 2342 * Refer to spec - Table 95: IVHD device entry type codes 2343 * 2344 * Linux IOMMU driver checks for the special IVHD device (type IO-APIC). 2345 * See Linux kernel commit 'c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059' 2346 */ 2347 if (x86_iommu_ir_supported(x86_iommu_get_default())) { 2348 build_append_int_noprefix(table_data, 2349 (0x1ull << 56) | /* type IOAPIC */ 2350 (IOAPIC_SB_DEVID << 40) | /* IOAPIC devid */ 2351 0x48, /* special device */ 2352 8); 2353 } 2354 acpi_table_end(linker, &table); 2355 } 2356 2357 typedef 2358 struct AcpiBuildState { 2359 /* Copy of table in RAM (for patching). */ 2360 MemoryRegion *table_mr; 2361 /* Is table patched? */ 2362 uint8_t patched; 2363 void *rsdp; 2364 MemoryRegion *rsdp_mr; 2365 MemoryRegion *linker_mr; 2366 } AcpiBuildState; 2367 2368 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg) 2369 { 2370 Object *pci_host; 2371 QObject *o; 2372 2373 pci_host = acpi_get_i386_pci_host(); 2374 if (!pci_host) { 2375 return false; 2376 } 2377 2378 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL); 2379 if (!o) { 2380 return false; 2381 } 2382 mcfg->base = qnum_get_uint(qobject_to(QNum, o)); 2383 qobject_unref(o); 2384 if (mcfg->base == PCIE_BASE_ADDR_UNMAPPED) { 2385 return false; 2386 } 2387 2388 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL); 2389 assert(o); 2390 mcfg->size = qnum_get_uint(qobject_to(QNum, o)); 2391 qobject_unref(o); 2392 return true; 2393 } 2394 2395 static 2396 void acpi_build(AcpiBuildTables *tables, MachineState *machine) 2397 { 2398 PCMachineState *pcms = PC_MACHINE(machine); 2399 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); 2400 X86MachineState *x86ms = X86_MACHINE(machine); 2401 DeviceState *iommu = pcms->iommu; 2402 GArray *table_offsets; 2403 unsigned facs, dsdt, rsdt, fadt; 2404 AcpiPmInfo pm; 2405 AcpiMiscInfo misc; 2406 AcpiMcfgInfo mcfg; 2407 Range pci_hole = {}, pci_hole64 = {}; 2408 uint8_t *u; 2409 size_t aml_len = 0; 2410 GArray *tables_blob = tables->table_data; 2411 AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL }; 2412 Object *vmgenid_dev; 2413 char *oem_id; 2414 char *oem_table_id; 2415 2416 acpi_get_pm_info(machine, &pm); 2417 acpi_get_misc_info(&misc); 2418 acpi_get_pci_holes(&pci_hole, &pci_hole64); 2419 acpi_get_slic_oem(&slic_oem); 2420 2421 if (slic_oem.id) { 2422 oem_id = slic_oem.id; 2423 } else { 2424 oem_id = x86ms->oem_id; 2425 } 2426 2427 if (slic_oem.table_id) { 2428 oem_table_id = slic_oem.table_id; 2429 } else { 2430 oem_table_id = x86ms->oem_table_id; 2431 } 2432 2433 table_offsets = g_array_new(false, true /* clear */, 2434 sizeof(uint32_t)); 2435 ACPI_BUILD_DPRINTF("init ACPI tables\n"); 2436 2437 bios_linker_loader_alloc(tables->linker, 2438 ACPI_BUILD_TABLE_FILE, tables_blob, 2439 64 /* Ensure FACS is aligned */, 2440 false /* high memory */); 2441 2442 /* 2443 * FACS is pointed to by FADT. 2444 * We place it first since it's the only table that has alignment 2445 * requirements. 2446 */ 2447 facs = tables_blob->len; 2448 build_facs(tables_blob); 2449 2450 /* DSDT is pointed to by FADT */ 2451 dsdt = tables_blob->len; 2452 build_dsdt(tables_blob, tables->linker, &pm, &misc, 2453 &pci_hole, &pci_hole64, machine); 2454 2455 /* Count the size of the DSDT and SSDT, we will need it for legacy 2456 * sizing of ACPI tables. 2457 */ 2458 aml_len += tables_blob->len - dsdt; 2459 2460 /* ACPI tables pointed to by RSDT */ 2461 fadt = tables_blob->len; 2462 acpi_add_table(table_offsets, tables_blob); 2463 pm.fadt.facs_tbl_offset = &facs; 2464 pm.fadt.dsdt_tbl_offset = &dsdt; 2465 pm.fadt.xdsdt_tbl_offset = &dsdt; 2466 build_fadt(tables_blob, tables->linker, &pm.fadt, oem_id, oem_table_id); 2467 aml_len += tables_blob->len - fadt; 2468 2469 acpi_add_table(table_offsets, tables_blob); 2470 acpi_build_madt(tables_blob, tables->linker, x86ms, 2471 ACPI_DEVICE_IF(x86ms->acpi_dev), x86ms->oem_id, 2472 x86ms->oem_table_id); 2473 2474 #ifdef CONFIG_ACPI_ERST 2475 { 2476 Object *erst_dev; 2477 erst_dev = find_erst_dev(); 2478 if (erst_dev) { 2479 acpi_add_table(table_offsets, tables_blob); 2480 build_erst(tables_blob, tables->linker, erst_dev, 2481 x86ms->oem_id, x86ms->oem_table_id); 2482 } 2483 } 2484 #endif 2485 2486 vmgenid_dev = find_vmgenid_dev(); 2487 if (vmgenid_dev) { 2488 acpi_add_table(table_offsets, tables_blob); 2489 vmgenid_build_acpi(VMGENID(vmgenid_dev), tables_blob, 2490 tables->vmgenid, tables->linker, x86ms->oem_id); 2491 } 2492 2493 if (misc.has_hpet) { 2494 acpi_add_table(table_offsets, tables_blob); 2495 build_hpet(tables_blob, tables->linker, x86ms->oem_id, 2496 x86ms->oem_table_id); 2497 } 2498 #ifdef CONFIG_TPM 2499 if (misc.tpm_version != TPM_VERSION_UNSPEC) { 2500 if (misc.tpm_version == TPM_VERSION_1_2) { 2501 acpi_add_table(table_offsets, tables_blob); 2502 build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog, 2503 x86ms->oem_id, x86ms->oem_table_id); 2504 } else { /* TPM_VERSION_2_0 */ 2505 acpi_add_table(table_offsets, tables_blob); 2506 build_tpm2(tables_blob, tables->linker, tables->tcpalog, 2507 x86ms->oem_id, x86ms->oem_table_id); 2508 } 2509 } 2510 #endif 2511 if (machine->numa_state->num_nodes) { 2512 acpi_add_table(table_offsets, tables_blob); 2513 build_srat(tables_blob, tables->linker, machine); 2514 if (machine->numa_state->have_numa_distance) { 2515 acpi_add_table(table_offsets, tables_blob); 2516 build_slit(tables_blob, tables->linker, machine, x86ms->oem_id, 2517 x86ms->oem_table_id); 2518 } 2519 if (machine->numa_state->hmat_enabled) { 2520 acpi_add_table(table_offsets, tables_blob); 2521 build_hmat(tables_blob, tables->linker, machine->numa_state, 2522 x86ms->oem_id, x86ms->oem_table_id); 2523 } 2524 } 2525 if (acpi_get_mcfg(&mcfg)) { 2526 acpi_add_table(table_offsets, tables_blob); 2527 build_mcfg(tables_blob, tables->linker, &mcfg, x86ms->oem_id, 2528 x86ms->oem_table_id); 2529 } 2530 if (object_dynamic_cast(OBJECT(iommu), TYPE_AMD_IOMMU_DEVICE)) { 2531 acpi_add_table(table_offsets, tables_blob); 2532 build_amd_iommu(tables_blob, tables->linker, x86ms->oem_id, 2533 x86ms->oem_table_id); 2534 } else if (object_dynamic_cast(OBJECT(iommu), TYPE_INTEL_IOMMU_DEVICE)) { 2535 acpi_add_table(table_offsets, tables_blob); 2536 build_dmar_q35(tables_blob, tables->linker, x86ms->oem_id, 2537 x86ms->oem_table_id); 2538 } else if (object_dynamic_cast(OBJECT(iommu), TYPE_VIRTIO_IOMMU_PCI)) { 2539 PCIDevice *pdev = PCI_DEVICE(iommu); 2540 2541 acpi_add_table(table_offsets, tables_blob); 2542 build_viot(machine, tables_blob, tables->linker, pci_get_bdf(pdev), 2543 x86ms->oem_id, x86ms->oem_table_id); 2544 } 2545 if (machine->nvdimms_state->is_enabled) { 2546 nvdimm_build_acpi(table_offsets, tables_blob, tables->linker, 2547 machine->nvdimms_state, machine->ram_slots, 2548 x86ms->oem_id, x86ms->oem_table_id); 2549 } 2550 if (pcms->cxl_devices_state.is_enabled) { 2551 cxl_build_cedt(table_offsets, tables_blob, tables->linker, 2552 x86ms->oem_id, x86ms->oem_table_id, &pcms->cxl_devices_state); 2553 } 2554 2555 acpi_add_table(table_offsets, tables_blob); 2556 build_waet(tables_blob, tables->linker, x86ms->oem_id, x86ms->oem_table_id); 2557 2558 /* Add tables supplied by user (if any) */ 2559 for (u = acpi_table_first(); u; u = acpi_table_next(u)) { 2560 unsigned len = acpi_table_len(u); 2561 2562 acpi_add_table(table_offsets, tables_blob); 2563 g_array_append_vals(tables_blob, u, len); 2564 } 2565 2566 /* RSDT is pointed to by RSDP */ 2567 rsdt = tables_blob->len; 2568 build_rsdt(tables_blob, tables->linker, table_offsets, 2569 oem_id, oem_table_id); 2570 2571 /* RSDP is in FSEG memory, so allocate it separately */ 2572 { 2573 AcpiRsdpData rsdp_data = { 2574 .revision = 0, 2575 .oem_id = x86ms->oem_id, 2576 .xsdt_tbl_offset = NULL, 2577 .rsdt_tbl_offset = &rsdt, 2578 }; 2579 build_rsdp(tables->rsdp, tables->linker, &rsdp_data); 2580 if (!pcmc->rsdp_in_ram) { 2581 /* We used to allocate some extra space for RSDP revision 2 but 2582 * only used the RSDP revision 0 space. The extra bytes were 2583 * zeroed out and not used. 2584 * Here we continue wasting those extra 16 bytes to make sure we 2585 * don't break migration for machine types 2.2 and older due to 2586 * RSDP blob size mismatch. 2587 */ 2588 build_append_int_noprefix(tables->rsdp, 0, 16); 2589 } 2590 } 2591 2592 /* We'll expose it all to Guest so we want to reduce 2593 * chance of size changes. 2594 * 2595 * We used to align the tables to 4k, but of course this would 2596 * too simple to be enough. 4k turned out to be too small an 2597 * alignment very soon, and in fact it is almost impossible to 2598 * keep the table size stable for all (max_cpus, max_memory_slots) 2599 * combinations. So the table size is always 64k for pc-i440fx-2.1 2600 * and we give an error if the table grows beyond that limit. 2601 * 2602 * We still have the problem of migrating from "-M pc-i440fx-2.0". For 2603 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables 2604 * than 2.0 and we can always pad the smaller tables with zeros. We can 2605 * then use the exact size of the 2.0 tables. 2606 * 2607 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration. 2608 */ 2609 if (pcmc->legacy_acpi_table_size) { 2610 /* Subtracting aml_len gives the size of fixed tables. Then add the 2611 * size of the PIIX4 DSDT/SSDT in QEMU 2.0. 2612 */ 2613 int legacy_aml_len = 2614 pcmc->legacy_acpi_table_size + 2615 ACPI_BUILD_LEGACY_CPU_AML_SIZE * x86ms->apic_id_limit; 2616 int legacy_table_size = 2617 ROUND_UP(tables_blob->len - aml_len + legacy_aml_len, 2618 ACPI_BUILD_ALIGN_SIZE); 2619 if (tables_blob->len > legacy_table_size) { 2620 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */ 2621 warn_report("ACPI table size %u exceeds %d bytes," 2622 " migration may not work", 2623 tables_blob->len, legacy_table_size); 2624 error_printf("Try removing CPUs, NUMA nodes, memory slots" 2625 " or PCI bridges."); 2626 } 2627 g_array_set_size(tables_blob, legacy_table_size); 2628 } else { 2629 /* Make sure we have a buffer in case we need to resize the tables. */ 2630 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) { 2631 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */ 2632 warn_report("ACPI table size %u exceeds %d bytes," 2633 " migration may not work", 2634 tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2); 2635 error_printf("Try removing CPUs, NUMA nodes, memory slots" 2636 " or PCI bridges."); 2637 } 2638 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); 2639 } 2640 2641 acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE); 2642 2643 /* Cleanup memory that's no longer used. */ 2644 g_array_free(table_offsets, true); 2645 g_free(slic_oem.id); 2646 g_free(slic_oem.table_id); 2647 } 2648 2649 static void acpi_ram_update(MemoryRegion *mr, GArray *data) 2650 { 2651 uint32_t size = acpi_data_len(data); 2652 2653 /* Make sure RAM size is correct - in case it got changed e.g. by migration */ 2654 memory_region_ram_resize(mr, size, &error_abort); 2655 2656 memcpy(memory_region_get_ram_ptr(mr), data->data, size); 2657 memory_region_set_dirty(mr, 0, size); 2658 } 2659 2660 static void acpi_build_update(void *build_opaque) 2661 { 2662 AcpiBuildState *build_state = build_opaque; 2663 AcpiBuildTables tables; 2664 2665 /* No state to update or already patched? Nothing to do. */ 2666 if (!build_state || build_state->patched) { 2667 return; 2668 } 2669 build_state->patched = 1; 2670 2671 acpi_build_tables_init(&tables); 2672 2673 acpi_build(&tables, MACHINE(qdev_get_machine())); 2674 2675 acpi_ram_update(build_state->table_mr, tables.table_data); 2676 2677 if (build_state->rsdp) { 2678 memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp)); 2679 } else { 2680 acpi_ram_update(build_state->rsdp_mr, tables.rsdp); 2681 } 2682 2683 acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); 2684 acpi_build_tables_cleanup(&tables, true); 2685 } 2686 2687 static void acpi_build_reset(void *build_opaque) 2688 { 2689 AcpiBuildState *build_state = build_opaque; 2690 build_state->patched = 0; 2691 } 2692 2693 static const VMStateDescription vmstate_acpi_build = { 2694 .name = "acpi_build", 2695 .version_id = 1, 2696 .minimum_version_id = 1, 2697 .fields = (VMStateField[]) { 2698 VMSTATE_UINT8(patched, AcpiBuildState), 2699 VMSTATE_END_OF_LIST() 2700 }, 2701 }; 2702 2703 void acpi_setup(void) 2704 { 2705 PCMachineState *pcms = PC_MACHINE(qdev_get_machine()); 2706 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); 2707 X86MachineState *x86ms = X86_MACHINE(pcms); 2708 AcpiBuildTables tables; 2709 AcpiBuildState *build_state; 2710 Object *vmgenid_dev; 2711 #ifdef CONFIG_TPM 2712 TPMIf *tpm; 2713 static FwCfgTPMConfig tpm_config; 2714 #endif 2715 2716 if (!x86ms->fw_cfg) { 2717 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n"); 2718 return; 2719 } 2720 2721 if (!pcms->acpi_build_enabled) { 2722 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n"); 2723 return; 2724 } 2725 2726 if (!x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) { 2727 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n"); 2728 return; 2729 } 2730 2731 build_state = g_malloc0(sizeof *build_state); 2732 2733 acpi_build_tables_init(&tables); 2734 acpi_build(&tables, MACHINE(pcms)); 2735 2736 /* Now expose it all to Guest */ 2737 build_state->table_mr = acpi_add_rom_blob(acpi_build_update, 2738 build_state, tables.table_data, 2739 ACPI_BUILD_TABLE_FILE); 2740 assert(build_state->table_mr != NULL); 2741 2742 build_state->linker_mr = 2743 acpi_add_rom_blob(acpi_build_update, build_state, 2744 tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE); 2745 2746 #ifdef CONFIG_TPM 2747 fw_cfg_add_file(x86ms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, 2748 tables.tcpalog->data, acpi_data_len(tables.tcpalog)); 2749 2750 tpm = tpm_find(); 2751 if (tpm && object_property_get_bool(OBJECT(tpm), "ppi", &error_abort)) { 2752 tpm_config = (FwCfgTPMConfig) { 2753 .tpmppi_address = cpu_to_le32(TPM_PPI_ADDR_BASE), 2754 .tpm_version = tpm_get_version(tpm), 2755 .tpmppi_version = TPM_PPI_VERSION_1_30 2756 }; 2757 fw_cfg_add_file(x86ms->fw_cfg, "etc/tpm/config", 2758 &tpm_config, sizeof tpm_config); 2759 } 2760 #endif 2761 2762 vmgenid_dev = find_vmgenid_dev(); 2763 if (vmgenid_dev) { 2764 vmgenid_add_fw_cfg(VMGENID(vmgenid_dev), x86ms->fw_cfg, 2765 tables.vmgenid); 2766 } 2767 2768 if (!pcmc->rsdp_in_ram) { 2769 /* 2770 * Keep for compatibility with old machine types. 2771 * Though RSDP is small, its contents isn't immutable, so 2772 * we'll update it along with the rest of tables on guest access. 2773 */ 2774 uint32_t rsdp_size = acpi_data_len(tables.rsdp); 2775 2776 build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size); 2777 fw_cfg_add_file_callback(x86ms->fw_cfg, ACPI_BUILD_RSDP_FILE, 2778 acpi_build_update, NULL, build_state, 2779 build_state->rsdp, rsdp_size, true); 2780 build_state->rsdp_mr = NULL; 2781 } else { 2782 build_state->rsdp = NULL; 2783 build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update, 2784 build_state, tables.rsdp, 2785 ACPI_BUILD_RSDP_FILE); 2786 } 2787 2788 qemu_register_reset(acpi_build_reset, build_state); 2789 acpi_build_reset(build_state); 2790 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state); 2791 2792 /* Cleanup tables but don't free the memory: we track it 2793 * in build_state. 2794 */ 2795 acpi_build_tables_cleanup(&tables, false); 2796 } 2797