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/acpi/pcihp.h" 60 #include "hw/i386/fw_cfg.h" 61 #include "hw/i386/pc.h" 62 #include "hw/pci/pci_bus.h" 63 #include "hw/pci-host/i440fx.h" 64 #include "hw/pci-host/q35.h" 65 #include "hw/i386/x86-iommu.h" 66 67 #include "hw/acpi/aml-build.h" 68 #include "hw/acpi/utils.h" 69 #include "hw/acpi/pci.h" 70 #include "hw/acpi/cxl.h" 71 72 #include "qom/qom-qobject.h" 73 #include "hw/i386/amd_iommu.h" 74 #include "hw/i386/intel_iommu.h" 75 #include "hw/virtio/virtio-iommu.h" 76 77 #include "hw/acpi/hmat.h" 78 #include "hw/acpi/viot.h" 79 80 #include CONFIG_DEVICES 81 82 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and 83 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows 84 * a little bit, there should be plenty of free space since the DSDT 85 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1. 86 */ 87 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97 88 #define ACPI_BUILD_ALIGN_SIZE 0x1000 89 90 #define ACPI_BUILD_TABLE_SIZE 0x20000 91 92 /* #define DEBUG_ACPI_BUILD */ 93 #ifdef DEBUG_ACPI_BUILD 94 #define ACPI_BUILD_DPRINTF(fmt, ...) \ 95 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0) 96 #else 97 #define ACPI_BUILD_DPRINTF(fmt, ...) 98 #endif 99 100 typedef struct AcpiPmInfo { 101 bool s3_disabled; 102 bool s4_disabled; 103 bool pcihp_bridge_en; 104 bool smi_on_cpuhp; 105 bool smi_on_cpu_unplug; 106 bool pcihp_root_en; 107 uint8_t s4_val; 108 AcpiFadtData fadt; 109 uint16_t cpu_hp_io_base; 110 uint16_t pcihp_io_base; 111 uint16_t pcihp_io_len; 112 } AcpiPmInfo; 113 114 typedef struct AcpiMiscInfo { 115 bool has_hpet; 116 #ifdef CONFIG_TPM 117 TPMVersion tpm_version; 118 #endif 119 } AcpiMiscInfo; 120 121 typedef struct FwCfgTPMConfig { 122 uint32_t tpmppi_address; 123 uint8_t tpm_version; 124 uint8_t tpmppi_version; 125 } QEMU_PACKED FwCfgTPMConfig; 126 127 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg); 128 129 const struct AcpiGenericAddress x86_nvdimm_acpi_dsmio = { 130 .space_id = AML_AS_SYSTEM_IO, 131 .address = NVDIMM_ACPI_IO_BASE, 132 .bit_width = NVDIMM_ACPI_IO_LEN << 3 133 }; 134 135 static void init_common_fadt_data(MachineState *ms, Object *o, 136 AcpiFadtData *data) 137 { 138 X86MachineState *x86ms = X86_MACHINE(ms); 139 /* 140 * "ICH9-LPC" or "PIIX4_PM" has "smm-compat" property to keep the old 141 * behavior for compatibility irrelevant to smm_enabled, which doesn't 142 * comforms to ACPI spec. 143 */ 144 bool smm_enabled = object_property_get_bool(o, "smm-compat", NULL) ? 145 true : x86_machine_is_smm_enabled(x86ms); 146 uint32_t io = object_property_get_uint(o, ACPI_PM_PROP_PM_IO_BASE, NULL); 147 AmlAddressSpace as = AML_AS_SYSTEM_IO; 148 AcpiFadtData fadt = { 149 .rev = 3, 150 .flags = 151 (1 << ACPI_FADT_F_WBINVD) | 152 (1 << ACPI_FADT_F_PROC_C1) | 153 (1 << ACPI_FADT_F_SLP_BUTTON) | 154 (1 << ACPI_FADT_F_RTC_S4) | 155 (1 << ACPI_FADT_F_USE_PLATFORM_CLOCK) | 156 /* APIC destination mode ("Flat Logical") has an upper limit of 8 157 * CPUs for more than 8 CPUs, "Clustered Logical" mode has to be 158 * used 159 */ 160 ((ms->smp.max_cpus > 8) ? 161 (1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL) : 0), 162 .int_model = 1 /* Multiple APIC */, 163 .rtc_century = RTC_CENTURY, 164 .plvl2_lat = 0xfff /* C2 state not supported */, 165 .plvl3_lat = 0xfff /* C3 state not supported */, 166 .smi_cmd = smm_enabled ? ACPI_PORT_SMI_CMD : 0, 167 .sci_int = object_property_get_uint(o, ACPI_PM_PROP_SCI_INT, NULL), 168 .acpi_enable_cmd = 169 smm_enabled ? 170 object_property_get_uint(o, ACPI_PM_PROP_ACPI_ENABLE_CMD, NULL) : 171 0, 172 .acpi_disable_cmd = 173 smm_enabled ? 174 object_property_get_uint(o, ACPI_PM_PROP_ACPI_DISABLE_CMD, NULL) : 175 0, 176 .pm1a_evt = { .space_id = as, .bit_width = 4 * 8, .address = io }, 177 .pm1a_cnt = { .space_id = as, .bit_width = 2 * 8, 178 .address = io + 0x04 }, 179 .pm_tmr = { .space_id = as, .bit_width = 4 * 8, .address = io + 0x08 }, 180 .gpe0_blk = { .space_id = as, .bit_width = 181 object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK_LEN, NULL) * 8, 182 .address = object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK, NULL) 183 }, 184 }; 185 186 /* 187 * ACPI v2, Table 5-10 - Fixed ACPI Description Table Boot Architecture 188 * Flags, bit offset 1 - 8042. 189 */ 190 fadt.iapc_boot_arch = iapc_boot_arch_8042(); 191 192 *data = fadt; 193 } 194 195 static Object *object_resolve_type_unambiguous(const char *typename) 196 { 197 bool ambig; 198 Object *o = object_resolve_path_type("", typename, &ambig); 199 200 if (ambig || !o) { 201 return NULL; 202 } 203 return o; 204 } 205 206 static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm) 207 { 208 Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM); 209 Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE); 210 Object *obj = piix ? piix : lpc; 211 QObject *o; 212 pm->cpu_hp_io_base = 0; 213 pm->pcihp_io_base = 0; 214 pm->pcihp_io_len = 0; 215 pm->smi_on_cpuhp = false; 216 pm->smi_on_cpu_unplug = false; 217 218 assert(obj); 219 init_common_fadt_data(machine, obj, &pm->fadt); 220 if (piix) { 221 /* w2k requires FADT(rev1) or it won't boot, keep PC compatible */ 222 pm->fadt.rev = 1; 223 pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE; 224 } 225 if (lpc) { 226 uint64_t smi_features = object_property_get_uint(lpc, 227 ICH9_LPC_SMI_NEGOTIATED_FEAT_PROP, NULL); 228 struct AcpiGenericAddress r = { .space_id = AML_AS_SYSTEM_IO, 229 .bit_width = 8, .address = ICH9_RST_CNT_IOPORT }; 230 pm->fadt.reset_reg = r; 231 pm->fadt.reset_val = 0xf; 232 pm->fadt.flags |= 1 << ACPI_FADT_F_RESET_REG_SUP; 233 pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE; 234 pm->smi_on_cpuhp = 235 !!(smi_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT)); 236 pm->smi_on_cpu_unplug = 237 !!(smi_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT)); 238 } 239 pm->pcihp_io_base = 240 object_property_get_uint(obj, ACPI_PCIHP_IO_BASE_PROP, NULL); 241 pm->pcihp_io_len = 242 object_property_get_uint(obj, ACPI_PCIHP_IO_LEN_PROP, NULL); 243 244 /* Fill in optional s3/s4 related properties */ 245 o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL); 246 if (o) { 247 pm->s3_disabled = qnum_get_uint(qobject_to(QNum, o)); 248 } else { 249 pm->s3_disabled = false; 250 } 251 qobject_unref(o); 252 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL); 253 if (o) { 254 pm->s4_disabled = qnum_get_uint(qobject_to(QNum, o)); 255 } else { 256 pm->s4_disabled = false; 257 } 258 qobject_unref(o); 259 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL); 260 if (o) { 261 pm->s4_val = qnum_get_uint(qobject_to(QNum, o)); 262 } else { 263 pm->s4_val = false; 264 } 265 qobject_unref(o); 266 267 pm->pcihp_bridge_en = 268 object_property_get_bool(obj, ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, 269 NULL); 270 pm->pcihp_root_en = 271 object_property_get_bool(obj, ACPI_PM_PROP_ACPI_PCI_ROOTHP, 272 NULL); 273 } 274 275 static void acpi_get_misc_info(AcpiMiscInfo *info) 276 { 277 info->has_hpet = hpet_find(); 278 #ifdef CONFIG_TPM 279 info->tpm_version = tpm_get_version(tpm_find()); 280 #endif 281 } 282 283 /* 284 * Because of the PXB hosts we cannot simply query TYPE_PCI_HOST_BRIDGE. 285 * On i386 arch we only have two pci hosts, so we can look only for them. 286 */ 287 Object *acpi_get_i386_pci_host(void) 288 { 289 PCIHostState *host; 290 291 host = PCI_HOST_BRIDGE(object_resolve_path("/machine/i440fx", NULL)); 292 if (!host) { 293 host = PCI_HOST_BRIDGE(object_resolve_path("/machine/q35", NULL)); 294 } 295 296 return OBJECT(host); 297 } 298 299 static void acpi_get_pci_holes(Range *hole, Range *hole64) 300 { 301 Object *pci_host; 302 303 pci_host = acpi_get_i386_pci_host(); 304 305 if (!pci_host) { 306 return; 307 } 308 309 range_set_bounds1(hole, 310 object_property_get_uint(pci_host, 311 PCI_HOST_PROP_PCI_HOLE_START, 312 NULL), 313 object_property_get_uint(pci_host, 314 PCI_HOST_PROP_PCI_HOLE_END, 315 NULL)); 316 range_set_bounds1(hole64, 317 object_property_get_uint(pci_host, 318 PCI_HOST_PROP_PCI_HOLE64_START, 319 NULL), 320 object_property_get_uint(pci_host, 321 PCI_HOST_PROP_PCI_HOLE64_END, 322 NULL)); 323 } 324 325 static void acpi_align_size(GArray *blob, unsigned align) 326 { 327 /* Align size to multiple of given size. This reduces the chance 328 * we need to change size in the future (breaking cross version migration). 329 */ 330 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); 331 } 332 333 /* 334 * ACPI spec 1.0b, 335 * 5.2.6 Firmware ACPI Control Structure 336 */ 337 static void 338 build_facs(GArray *table_data) 339 { 340 const char *sig = "FACS"; 341 const uint8_t reserved[40] = {}; 342 343 g_array_append_vals(table_data, sig, 4); /* Signature */ 344 build_append_int_noprefix(table_data, 64, 4); /* Length */ 345 build_append_int_noprefix(table_data, 0, 4); /* Hardware Signature */ 346 build_append_int_noprefix(table_data, 0, 4); /* Firmware Waking Vector */ 347 build_append_int_noprefix(table_data, 0, 4); /* Global Lock */ 348 build_append_int_noprefix(table_data, 0, 4); /* Flags */ 349 g_array_append_vals(table_data, reserved, 40); /* Reserved */ 350 } 351 352 Aml *aml_pci_device_dsm(void) 353 { 354 Aml *method; 355 356 method = aml_method("_DSM", 4, AML_SERIALIZED); 357 { 358 Aml *params = aml_local(0); 359 Aml *pkg = aml_package(2); 360 aml_append(pkg, aml_int(0)); 361 aml_append(pkg, aml_int(0)); 362 aml_append(method, aml_store(pkg, params)); 363 aml_append(method, 364 aml_store(aml_name("BSEL"), aml_index(params, aml_int(0)))); 365 aml_append(method, 366 aml_store(aml_name("ASUN"), aml_index(params, aml_int(1)))); 367 aml_append(method, 368 aml_return(aml_call5("PDSM", aml_arg(0), aml_arg(1), 369 aml_arg(2), aml_arg(3), params)) 370 ); 371 } 372 return method; 373 } 374 375 static void build_append_pci_dsm_func0_common(Aml *ctx, Aml *retvar) 376 { 377 Aml *UUID, *ifctx1; 378 uint8_t byte_list[1] = { 0 }; /* nothing supported yet */ 379 380 aml_append(ctx, aml_store(aml_buffer(1, byte_list), retvar)); 381 /* 382 * PCI Firmware Specification 3.1 383 * 4.6. _DSM Definitions for PCI 384 */ 385 UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D"); 386 ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(0), UUID))); 387 { 388 /* call is for unsupported UUID, bail out */ 389 aml_append(ifctx1, aml_return(retvar)); 390 } 391 aml_append(ctx, ifctx1); 392 393 ifctx1 = aml_if(aml_lless(aml_arg(1), aml_int(2))); 394 { 395 /* call is for unsupported REV, bail out */ 396 aml_append(ifctx1, aml_return(retvar)); 397 } 398 aml_append(ctx, ifctx1); 399 } 400 401 static Aml *aml_pci_edsm(void) 402 { 403 Aml *method, *ifctx; 404 Aml *zero = aml_int(0); 405 Aml *func = aml_arg(2); 406 Aml *ret = aml_local(0); 407 Aml *aidx = aml_local(1); 408 Aml *params = aml_arg(4); 409 410 method = aml_method("EDSM", 5, AML_SERIALIZED); 411 412 /* get supported functions */ 413 ifctx = aml_if(aml_equal(func, zero)); 414 { 415 /* 1: have supported functions */ 416 /* 7: support for function 7 */ 417 const uint8_t caps = 1 | BIT(7); 418 build_append_pci_dsm_func0_common(ifctx, ret); 419 aml_append(ifctx, aml_store(aml_int(caps), aml_index(ret, zero))); 420 aml_append(ifctx, aml_return(ret)); 421 } 422 aml_append(method, ifctx); 423 424 /* handle specific functions requests */ 425 /* 426 * PCI Firmware Specification 3.1 427 * 4.6.7. _DSM for Naming a PCI or PCI Express Device Under 428 * Operating Systems 429 */ 430 ifctx = aml_if(aml_equal(func, aml_int(7))); 431 { 432 Aml *pkg = aml_package(2); 433 aml_append(pkg, zero); 434 /* optional, if not impl. should return null string */ 435 aml_append(pkg, aml_string("%s", "")); 436 aml_append(ifctx, aml_store(pkg, ret)); 437 438 /* 439 * IASL is fine when initializing Package with computational data, 440 * however it makes guest unhappy /it fails to process such AML/. 441 * So use runtime assignment to set acpi-index after initializer 442 * to make OSPM happy. 443 */ 444 aml_append(ifctx, 445 aml_store(aml_derefof(aml_index(params, aml_int(0))), aidx)); 446 aml_append(ifctx, aml_store(aidx, aml_index(ret, zero))); 447 aml_append(ifctx, aml_return(ret)); 448 } 449 aml_append(method, ifctx); 450 451 return method; 452 } 453 454 static Aml *aml_pci_static_endpoint_dsm(PCIDevice *pdev) 455 { 456 Aml *method; 457 458 g_assert(pdev->acpi_index != 0); 459 method = aml_method("_DSM", 4, AML_SERIALIZED); 460 { 461 Aml *params = aml_local(0); 462 Aml *pkg = aml_package(1); 463 aml_append(pkg, aml_int(pdev->acpi_index)); 464 aml_append(method, aml_store(pkg, params)); 465 aml_append(method, 466 aml_return(aml_call5("EDSM", aml_arg(0), aml_arg(1), 467 aml_arg(2), aml_arg(3), params)) 468 ); 469 } 470 return method; 471 } 472 473 static void build_append_pcihp_notify_entry(Aml *method, int slot) 474 { 475 Aml *if_ctx; 476 int32_t devfn = PCI_DEVFN(slot, 0); 477 478 if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot), NULL)); 479 aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1))); 480 aml_append(method, if_ctx); 481 } 482 483 static bool is_devfn_ignored_generic(const int devfn, const PCIBus *bus) 484 { 485 const PCIDevice *pdev = bus->devices[devfn]; 486 487 if (PCI_FUNC(devfn)) { 488 if (IS_PCI_BRIDGE(pdev)) { 489 /* 490 * Ignore only hotplugged PCI bridges on !0 functions, but 491 * allow describing cold plugged bridges on all functions 492 */ 493 if (DEVICE(pdev)->hotplugged) { 494 return true; 495 } 496 } 497 } 498 return false; 499 } 500 501 static bool is_devfn_ignored_hotplug(const int devfn, const PCIBus *bus) 502 { 503 PCIDevice *pdev = bus->devices[devfn]; 504 if (pdev) { 505 return is_devfn_ignored_generic(devfn, bus) || 506 !DEVICE_GET_CLASS(pdev)->hotpluggable || 507 /* Cold plugged bridges aren't themselves hot-pluggable */ 508 (IS_PCI_BRIDGE(pdev) && !DEVICE(pdev)->hotplugged); 509 } else { /* non populated slots */ 510 /* 511 * hotplug is supported only for non-multifunction device 512 * so generate device description only for function 0 513 */ 514 if (PCI_FUNC(devfn) || 515 (pci_bus_is_express(bus) && PCI_SLOT(devfn) > 0)) { 516 return true; 517 } 518 } 519 return false; 520 } 521 522 void build_append_pcihp_slots(Aml *parent_scope, PCIBus *bus) 523 { 524 int devfn; 525 Aml *dev, *notify_method = NULL, *method; 526 QObject *bsel = object_property_get_qobject(OBJECT(bus), 527 ACPI_PCIHP_PROP_BSEL, NULL); 528 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); 529 qobject_unref(bsel); 530 531 aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val))); 532 notify_method = aml_method("DVNT", 2, AML_NOTSERIALIZED); 533 534 for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { 535 int slot = PCI_SLOT(devfn); 536 int adr = slot << 16 | PCI_FUNC(devfn); 537 538 if (is_devfn_ignored_hotplug(devfn, bus)) { 539 continue; 540 } 541 542 if (bus->devices[devfn]) { 543 dev = aml_scope("S%.02X", devfn); 544 } else { 545 dev = aml_device("S%.02X", devfn); 546 aml_append(dev, aml_name_decl("_ADR", aml_int(adr))); 547 } 548 549 /* 550 * Can't declare _SUN here for every device as it changes 'slot' 551 * enumeration order in linux kernel, so use another variable for it 552 */ 553 aml_append(dev, aml_name_decl("ASUN", aml_int(slot))); 554 aml_append(dev, aml_pci_device_dsm()); 555 556 aml_append(dev, aml_name_decl("_SUN", aml_int(slot))); 557 /* add _EJ0 to make slot hotpluggable */ 558 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 559 aml_append(method, 560 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN")) 561 ); 562 aml_append(dev, method); 563 564 build_append_pcihp_notify_entry(notify_method, slot); 565 566 /* device descriptor has been composed, add it into parent context */ 567 aml_append(parent_scope, dev); 568 } 569 aml_append(parent_scope, notify_method); 570 } 571 572 void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus) 573 { 574 int devfn; 575 Aml *dev; 576 577 for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { 578 /* ACPI spec: 1.0b: Table 6-2 _ADR Object Bus Types, PCI type */ 579 int adr = PCI_SLOT(devfn) << 16 | PCI_FUNC(devfn); 580 PCIDevice *pdev = bus->devices[devfn]; 581 582 if (!pdev || is_devfn_ignored_generic(devfn, bus)) { 583 continue; 584 } 585 586 /* start to compose PCI device descriptor */ 587 dev = aml_device("S%.02X", devfn); 588 aml_append(dev, aml_name_decl("_ADR", aml_int(adr))); 589 590 call_dev_aml_func(DEVICE(bus->devices[devfn]), dev); 591 /* add _DSM if device has acpi-index set */ 592 if (pdev->acpi_index && 593 !object_property_get_bool(OBJECT(pdev), "hotpluggable", 594 &error_abort)) { 595 aml_append(dev, aml_pci_static_endpoint_dsm(pdev)); 596 } 597 598 /* device descriptor has been composed, add it into parent context */ 599 aml_append(parent_scope, dev); 600 } 601 } 602 603 static bool build_append_notfication_callback(Aml *parent_scope, 604 const PCIBus *bus) 605 { 606 Aml *method; 607 PCIBus *sec; 608 QObject *bsel; 609 int nr_notifiers = 0; 610 GQueue *pcnt_bus_list = g_queue_new(); 611 612 QLIST_FOREACH(sec, &bus->child, sibling) { 613 Aml *br_scope = aml_scope("S%.02X", sec->parent_dev->devfn); 614 if (pci_bus_is_root(sec)) { 615 continue; 616 } 617 nr_notifiers = nr_notifiers + 618 build_append_notfication_callback(br_scope, sec); 619 /* 620 * add new child scope to parent 621 * and keep track of bus that have PCNT, 622 * bus list is used later to call children PCNTs from this level PCNT 623 */ 624 if (nr_notifiers) { 625 g_queue_push_tail(pcnt_bus_list, sec); 626 aml_append(parent_scope, br_scope); 627 } 628 } 629 630 /* 631 * Append PCNT method to notify about events on local and child buses. 632 * ps: hostbridge might not have hotplug (bsel) enabled but might have 633 * child bridges that do have bsel. 634 */ 635 method = aml_method("PCNT", 0, AML_NOTSERIALIZED); 636 637 /* If bus supports hotplug select it and notify about local events */ 638 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL); 639 if (bsel) { 640 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); 641 642 aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM"))); 643 aml_append(method, aml_call2("DVNT", aml_name("PCIU"), 644 aml_int(1))); /* Device Check */ 645 aml_append(method, aml_call2("DVNT", aml_name("PCID"), 646 aml_int(3))); /* Eject Request */ 647 nr_notifiers++; 648 } 649 650 /* Notify about child bus events in any case */ 651 while ((sec = g_queue_pop_head(pcnt_bus_list))) { 652 aml_append(method, aml_name("^S%.02X.PCNT", sec->parent_dev->devfn)); 653 } 654 655 aml_append(parent_scope, method); 656 qobject_unref(bsel); 657 g_queue_free(pcnt_bus_list); 658 return !!nr_notifiers; 659 } 660 661 static Aml *aml_pci_pdsm(void) 662 { 663 Aml *method, *ifctx, *ifctx1; 664 Aml *ret = aml_local(0); 665 Aml *caps = aml_local(1); 666 Aml *acpi_index = aml_local(2); 667 Aml *zero = aml_int(0); 668 Aml *one = aml_int(1); 669 Aml *func = aml_arg(2); 670 Aml *params = aml_arg(4); 671 Aml *bnum = aml_derefof(aml_index(params, aml_int(0))); 672 Aml *sunum = aml_derefof(aml_index(params, aml_int(1))); 673 674 method = aml_method("PDSM", 5, AML_SERIALIZED); 675 676 /* get supported functions */ 677 ifctx = aml_if(aml_equal(func, zero)); 678 { 679 build_append_pci_dsm_func0_common(ifctx, ret); 680 681 aml_append(ifctx, aml_store(zero, caps)); 682 aml_append(ifctx, 683 aml_store(aml_call2("AIDX", bnum, sunum), acpi_index)); 684 /* 685 * advertise function 7 if device has acpi-index 686 * acpi_index values: 687 * 0: not present (default value) 688 * FFFFFFFF: not supported (old QEMU without PIDX reg) 689 * other: device's acpi-index 690 */ 691 ifctx1 = aml_if(aml_lnot( 692 aml_or(aml_equal(acpi_index, zero), 693 aml_equal(acpi_index, aml_int(0xFFFFFFFF)), NULL) 694 )); 695 { 696 /* have supported functions */ 697 aml_append(ifctx1, aml_or(caps, one, caps)); 698 /* support for function 7 */ 699 aml_append(ifctx1, 700 aml_or(caps, aml_shiftleft(one, aml_int(7)), caps)); 701 } 702 aml_append(ifctx, ifctx1); 703 704 aml_append(ifctx, aml_store(caps, aml_index(ret, zero))); 705 aml_append(ifctx, aml_return(ret)); 706 } 707 aml_append(method, ifctx); 708 709 /* handle specific functions requests */ 710 /* 711 * PCI Firmware Specification 3.1 712 * 4.6.7. _DSM for Naming a PCI or PCI Express Device Under 713 * Operating Systems 714 */ 715 ifctx = aml_if(aml_equal(func, aml_int(7))); 716 { 717 Aml *pkg = aml_package(2); 718 719 aml_append(pkg, zero); 720 /* 721 * optional, if not impl. should return null string 722 */ 723 aml_append(pkg, aml_string("%s", "")); 724 aml_append(ifctx, aml_store(pkg, ret)); 725 726 aml_append(ifctx, aml_store(aml_call2("AIDX", bnum, sunum), acpi_index)); 727 /* 728 * update acpi-index to actual value 729 */ 730 aml_append(ifctx, aml_store(acpi_index, aml_index(ret, zero))); 731 aml_append(ifctx, aml_return(ret)); 732 } 733 734 aml_append(method, ifctx); 735 return method; 736 } 737 738 /** 739 * build_prt_entry: 740 * @link_name: link name for PCI route entry 741 * 742 * build AML package containing a PCI route entry for @link_name 743 */ 744 static Aml *build_prt_entry(const char *link_name) 745 { 746 Aml *a_zero = aml_int(0); 747 Aml *pkg = aml_package(4); 748 aml_append(pkg, a_zero); 749 aml_append(pkg, a_zero); 750 aml_append(pkg, aml_name("%s", link_name)); 751 aml_append(pkg, a_zero); 752 return pkg; 753 } 754 755 /* 756 * initialize_route - Initialize the interrupt routing rule 757 * through a specific LINK: 758 * if (lnk_idx == idx) 759 * route using link 'link_name' 760 */ 761 static Aml *initialize_route(Aml *route, const char *link_name, 762 Aml *lnk_idx, int idx) 763 { 764 Aml *if_ctx = aml_if(aml_equal(lnk_idx, aml_int(idx))); 765 Aml *pkg = build_prt_entry(link_name); 766 767 aml_append(if_ctx, aml_store(pkg, route)); 768 769 return if_ctx; 770 } 771 772 /* 773 * build_prt - Define interrupt rounting rules 774 * 775 * Returns an array of 128 routes, one for each device, 776 * based on device location. 777 * The main goal is to equally distribute the interrupts 778 * over the 4 existing ACPI links (works only for i440fx). 779 * The hash function is (slot + pin) & 3 -> "LNK[D|A|B|C]". 780 * 781 */ 782 static Aml *build_prt(bool is_pci0_prt) 783 { 784 Aml *method, *while_ctx, *pin, *res; 785 786 method = aml_method("_PRT", 0, AML_NOTSERIALIZED); 787 res = aml_local(0); 788 pin = aml_local(1); 789 aml_append(method, aml_store(aml_package(128), res)); 790 aml_append(method, aml_store(aml_int(0), pin)); 791 792 /* while (pin < 128) */ 793 while_ctx = aml_while(aml_lless(pin, aml_int(128))); 794 { 795 Aml *slot = aml_local(2); 796 Aml *lnk_idx = aml_local(3); 797 Aml *route = aml_local(4); 798 799 /* slot = pin >> 2 */ 800 aml_append(while_ctx, 801 aml_store(aml_shiftright(pin, aml_int(2), NULL), slot)); 802 /* lnk_idx = (slot + pin) & 3 */ 803 aml_append(while_ctx, 804 aml_store(aml_and(aml_add(pin, slot, NULL), aml_int(3), NULL), 805 lnk_idx)); 806 807 /* route[2] = "LNK[D|A|B|C]", selection based on pin % 3 */ 808 aml_append(while_ctx, initialize_route(route, "LNKD", lnk_idx, 0)); 809 if (is_pci0_prt) { 810 Aml *if_device_1, *if_pin_4, *else_pin_4; 811 812 /* device 1 is the power-management device, needs SCI */ 813 if_device_1 = aml_if(aml_equal(lnk_idx, aml_int(1))); 814 { 815 if_pin_4 = aml_if(aml_equal(pin, aml_int(4))); 816 { 817 aml_append(if_pin_4, 818 aml_store(build_prt_entry("LNKS"), route)); 819 } 820 aml_append(if_device_1, if_pin_4); 821 else_pin_4 = aml_else(); 822 { 823 aml_append(else_pin_4, 824 aml_store(build_prt_entry("LNKA"), route)); 825 } 826 aml_append(if_device_1, else_pin_4); 827 } 828 aml_append(while_ctx, if_device_1); 829 } else { 830 aml_append(while_ctx, initialize_route(route, "LNKA", lnk_idx, 1)); 831 } 832 aml_append(while_ctx, initialize_route(route, "LNKB", lnk_idx, 2)); 833 aml_append(while_ctx, initialize_route(route, "LNKC", lnk_idx, 3)); 834 835 /* route[0] = 0x[slot]FFFF */ 836 aml_append(while_ctx, 837 aml_store(aml_or(aml_shiftleft(slot, aml_int(16)), aml_int(0xFFFF), 838 NULL), 839 aml_index(route, aml_int(0)))); 840 /* route[1] = pin & 3 */ 841 aml_append(while_ctx, 842 aml_store(aml_and(pin, aml_int(3), NULL), 843 aml_index(route, aml_int(1)))); 844 /* res[pin] = route */ 845 aml_append(while_ctx, aml_store(route, aml_index(res, pin))); 846 /* pin++ */ 847 aml_append(while_ctx, aml_increment(pin)); 848 } 849 aml_append(method, while_ctx); 850 /* return res*/ 851 aml_append(method, aml_return(res)); 852 853 return method; 854 } 855 856 static void build_hpet_aml(Aml *table) 857 { 858 Aml *crs; 859 Aml *field; 860 Aml *method; 861 Aml *if_ctx; 862 Aml *scope = aml_scope("_SB"); 863 Aml *dev = aml_device("HPET"); 864 Aml *zero = aml_int(0); 865 Aml *id = aml_local(0); 866 Aml *period = aml_local(1); 867 868 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0103"))); 869 aml_append(dev, aml_name_decl("_UID", zero)); 870 871 aml_append(dev, 872 aml_operation_region("HPTM", AML_SYSTEM_MEMORY, aml_int(HPET_BASE), 873 HPET_LEN)); 874 field = aml_field("HPTM", AML_DWORD_ACC, AML_LOCK, AML_PRESERVE); 875 aml_append(field, aml_named_field("VEND", 32)); 876 aml_append(field, aml_named_field("PRD", 32)); 877 aml_append(dev, field); 878 879 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 880 aml_append(method, aml_store(aml_name("VEND"), id)); 881 aml_append(method, aml_store(aml_name("PRD"), period)); 882 aml_append(method, aml_shiftright(id, aml_int(16), id)); 883 if_ctx = aml_if(aml_lor(aml_equal(id, zero), 884 aml_equal(id, aml_int(0xffff)))); 885 { 886 aml_append(if_ctx, aml_return(zero)); 887 } 888 aml_append(method, if_ctx); 889 890 if_ctx = aml_if(aml_lor(aml_equal(period, zero), 891 aml_lgreater(period, aml_int(100000000)))); 892 { 893 aml_append(if_ctx, aml_return(zero)); 894 } 895 aml_append(method, if_ctx); 896 897 aml_append(method, aml_return(aml_int(0x0F))); 898 aml_append(dev, method); 899 900 crs = aml_resource_template(); 901 aml_append(crs, aml_memory32_fixed(HPET_BASE, HPET_LEN, AML_READ_ONLY)); 902 aml_append(dev, aml_name_decl("_CRS", crs)); 903 904 aml_append(scope, dev); 905 aml_append(table, scope); 906 } 907 908 static Aml *build_vmbus_device_aml(VMBusBridge *vmbus_bridge) 909 { 910 Aml *dev; 911 Aml *method; 912 Aml *crs; 913 914 dev = aml_device("VMBS"); 915 aml_append(dev, aml_name_decl("STA", aml_int(0xF))); 916 aml_append(dev, aml_name_decl("_HID", aml_string("VMBus"))); 917 aml_append(dev, aml_name_decl("_UID", aml_int(0x0))); 918 aml_append(dev, aml_name_decl("_DDN", aml_string("VMBUS"))); 919 920 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 921 aml_append(method, aml_store(aml_and(aml_name("STA"), aml_int(0xD), NULL), 922 aml_name("STA"))); 923 aml_append(dev, method); 924 925 method = aml_method("_PS0", 0, AML_NOTSERIALIZED); 926 aml_append(method, aml_store(aml_or(aml_name("STA"), aml_int(0xF), NULL), 927 aml_name("STA"))); 928 aml_append(dev, method); 929 930 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 931 aml_append(method, aml_return(aml_name("STA"))); 932 aml_append(dev, method); 933 934 aml_append(dev, aml_name_decl("_PS3", aml_int(0x0))); 935 936 crs = aml_resource_template(); 937 aml_append(crs, aml_irq_no_flags(vmbus_bridge->irq)); 938 aml_append(dev, aml_name_decl("_CRS", crs)); 939 940 return dev; 941 } 942 943 static void build_dbg_aml(Aml *table) 944 { 945 Aml *field; 946 Aml *method; 947 Aml *while_ctx; 948 Aml *scope = aml_scope("\\"); 949 Aml *buf = aml_local(0); 950 Aml *len = aml_local(1); 951 Aml *idx = aml_local(2); 952 953 aml_append(scope, 954 aml_operation_region("DBG", AML_SYSTEM_IO, aml_int(0x0402), 0x01)); 955 field = aml_field("DBG", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); 956 aml_append(field, aml_named_field("DBGB", 8)); 957 aml_append(scope, field); 958 959 method = aml_method("DBUG", 1, AML_NOTSERIALIZED); 960 961 aml_append(method, aml_to_hexstring(aml_arg(0), buf)); 962 aml_append(method, aml_to_buffer(buf, buf)); 963 aml_append(method, aml_subtract(aml_sizeof(buf), aml_int(1), len)); 964 aml_append(method, aml_store(aml_int(0), idx)); 965 966 while_ctx = aml_while(aml_lless(idx, len)); 967 aml_append(while_ctx, 968 aml_store(aml_derefof(aml_index(buf, idx)), aml_name("DBGB"))); 969 aml_append(while_ctx, aml_increment(idx)); 970 aml_append(method, while_ctx); 971 972 aml_append(method, aml_store(aml_int(0x0A), aml_name("DBGB"))); 973 aml_append(scope, method); 974 975 aml_append(table, scope); 976 } 977 978 static Aml *build_link_dev(const char *name, uint8_t uid, Aml *reg) 979 { 980 Aml *dev; 981 Aml *crs; 982 Aml *method; 983 uint32_t irqs[] = {5, 10, 11}; 984 985 dev = aml_device("%s", name); 986 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 987 aml_append(dev, aml_name_decl("_UID", aml_int(uid))); 988 989 crs = aml_resource_template(); 990 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 991 AML_SHARED, irqs, ARRAY_SIZE(irqs))); 992 aml_append(dev, aml_name_decl("_PRS", crs)); 993 994 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 995 aml_append(method, aml_return(aml_call1("IQST", reg))); 996 aml_append(dev, method); 997 998 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 999 aml_append(method, aml_or(reg, aml_int(0x80), reg)); 1000 aml_append(dev, method); 1001 1002 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 1003 aml_append(method, aml_return(aml_call1("IQCR", reg))); 1004 aml_append(dev, method); 1005 1006 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 1007 aml_append(method, aml_create_dword_field(aml_arg(0), aml_int(5), "PRRI")); 1008 aml_append(method, aml_store(aml_name("PRRI"), reg)); 1009 aml_append(dev, method); 1010 1011 return dev; 1012 } 1013 1014 static Aml *build_gsi_link_dev(const char *name, uint8_t uid, uint8_t gsi) 1015 { 1016 Aml *dev; 1017 Aml *crs; 1018 Aml *method; 1019 uint32_t irqs; 1020 1021 dev = aml_device("%s", name); 1022 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 1023 aml_append(dev, aml_name_decl("_UID", aml_int(uid))); 1024 1025 crs = aml_resource_template(); 1026 irqs = gsi; 1027 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 1028 AML_SHARED, &irqs, 1)); 1029 aml_append(dev, aml_name_decl("_PRS", crs)); 1030 1031 aml_append(dev, aml_name_decl("_CRS", crs)); 1032 1033 /* 1034 * _DIS can be no-op because the interrupt cannot be disabled. 1035 */ 1036 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 1037 aml_append(dev, method); 1038 1039 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 1040 aml_append(dev, method); 1041 1042 return dev; 1043 } 1044 1045 /* _CRS method - get current settings */ 1046 static Aml *build_iqcr_method(bool is_piix4) 1047 { 1048 Aml *if_ctx; 1049 uint32_t irqs; 1050 Aml *method = aml_method("IQCR", 1, AML_SERIALIZED); 1051 Aml *crs = aml_resource_template(); 1052 1053 irqs = 0; 1054 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, 1055 AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1)); 1056 aml_append(method, aml_name_decl("PRR0", crs)); 1057 1058 aml_append(method, 1059 aml_create_dword_field(aml_name("PRR0"), aml_int(5), "PRRI")); 1060 1061 if (is_piix4) { 1062 if_ctx = aml_if(aml_lless(aml_arg(0), aml_int(0x80))); 1063 aml_append(if_ctx, aml_store(aml_arg(0), aml_name("PRRI"))); 1064 aml_append(method, if_ctx); 1065 } else { 1066 aml_append(method, 1067 aml_store(aml_and(aml_arg(0), aml_int(0xF), NULL), 1068 aml_name("PRRI"))); 1069 } 1070 1071 aml_append(method, aml_return(aml_name("PRR0"))); 1072 return method; 1073 } 1074 1075 /* _STA method - get status */ 1076 static Aml *build_irq_status_method(void) 1077 { 1078 Aml *if_ctx; 1079 Aml *method = aml_method("IQST", 1, AML_NOTSERIALIZED); 1080 1081 if_ctx = aml_if(aml_and(aml_int(0x80), aml_arg(0), NULL)); 1082 aml_append(if_ctx, aml_return(aml_int(0x09))); 1083 aml_append(method, if_ctx); 1084 aml_append(method, aml_return(aml_int(0x0B))); 1085 return method; 1086 } 1087 1088 static void build_piix4_pci0_int(Aml *table) 1089 { 1090 Aml *dev; 1091 Aml *crs; 1092 Aml *method; 1093 uint32_t irqs; 1094 Aml *sb_scope = aml_scope("_SB"); 1095 Aml *pci0_scope = aml_scope("PCI0"); 1096 1097 aml_append(pci0_scope, build_prt(true)); 1098 aml_append(sb_scope, pci0_scope); 1099 1100 aml_append(sb_scope, build_irq_status_method()); 1101 aml_append(sb_scope, build_iqcr_method(true)); 1102 1103 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQ0"))); 1104 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQ1"))); 1105 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQ2"))); 1106 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQ3"))); 1107 1108 dev = aml_device("LNKS"); 1109 { 1110 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 1111 aml_append(dev, aml_name_decl("_UID", aml_int(4))); 1112 1113 crs = aml_resource_template(); 1114 irqs = 9; 1115 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, 1116 AML_ACTIVE_HIGH, AML_SHARED, 1117 &irqs, 1)); 1118 aml_append(dev, aml_name_decl("_PRS", crs)); 1119 1120 /* The SCI cannot be disabled and is always attached to GSI 9, 1121 * so these are no-ops. We only need this link to override the 1122 * polarity to active high and match the content of the MADT. 1123 */ 1124 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1125 aml_append(method, aml_return(aml_int(0x0b))); 1126 aml_append(dev, method); 1127 1128 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 1129 aml_append(dev, method); 1130 1131 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 1132 aml_append(method, aml_return(aml_name("_PRS"))); 1133 aml_append(dev, method); 1134 1135 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 1136 aml_append(dev, method); 1137 } 1138 aml_append(sb_scope, dev); 1139 1140 aml_append(table, sb_scope); 1141 } 1142 1143 static void append_q35_prt_entry(Aml *ctx, uint32_t nr, const char *name) 1144 { 1145 int i; 1146 int head; 1147 Aml *pkg; 1148 char base = name[3] < 'E' ? 'A' : 'E'; 1149 char *s = g_strdup(name); 1150 Aml *a_nr = aml_int((nr << 16) | 0xffff); 1151 1152 assert(strlen(s) == 4); 1153 1154 head = name[3] - base; 1155 for (i = 0; i < 4; i++) { 1156 if (head + i > 3) { 1157 head = i * -1; 1158 } 1159 s[3] = base + head + i; 1160 pkg = aml_package(4); 1161 aml_append(pkg, a_nr); 1162 aml_append(pkg, aml_int(i)); 1163 aml_append(pkg, aml_name("%s", s)); 1164 aml_append(pkg, aml_int(0)); 1165 aml_append(ctx, pkg); 1166 } 1167 g_free(s); 1168 } 1169 1170 static Aml *build_q35_routing_table(const char *str) 1171 { 1172 int i; 1173 Aml *pkg; 1174 char *name = g_strdup_printf("%s ", str); 1175 1176 pkg = aml_package(128); 1177 for (i = 0; i < 0x18; i++) { 1178 name[3] = 'E' + (i & 0x3); 1179 append_q35_prt_entry(pkg, i, name); 1180 } 1181 1182 name[3] = 'E'; 1183 append_q35_prt_entry(pkg, 0x18, name); 1184 1185 /* INTA -> PIRQA for slot 25 - 31, see the default value of D<N>IR */ 1186 for (i = 0x0019; i < 0x1e; i++) { 1187 name[3] = 'A'; 1188 append_q35_prt_entry(pkg, i, name); 1189 } 1190 1191 /* PCIe->PCI bridge. use PIRQ[E-H] */ 1192 name[3] = 'E'; 1193 append_q35_prt_entry(pkg, 0x1e, name); 1194 name[3] = 'A'; 1195 append_q35_prt_entry(pkg, 0x1f, name); 1196 1197 g_free(name); 1198 return pkg; 1199 } 1200 1201 static void build_q35_pci0_int(Aml *table) 1202 { 1203 Aml *method; 1204 Aml *sb_scope = aml_scope("_SB"); 1205 Aml *pci0_scope = aml_scope("PCI0"); 1206 1207 /* Zero => PIC mode, One => APIC Mode */ 1208 aml_append(table, aml_name_decl("PICF", aml_int(0))); 1209 method = aml_method("_PIC", 1, AML_NOTSERIALIZED); 1210 { 1211 aml_append(method, aml_store(aml_arg(0), aml_name("PICF"))); 1212 } 1213 aml_append(table, method); 1214 1215 aml_append(pci0_scope, 1216 aml_name_decl("PRTP", build_q35_routing_table("LNK"))); 1217 aml_append(pci0_scope, 1218 aml_name_decl("PRTA", build_q35_routing_table("GSI"))); 1219 1220 method = aml_method("_PRT", 0, AML_NOTSERIALIZED); 1221 { 1222 Aml *if_ctx; 1223 Aml *else_ctx; 1224 1225 /* PCI IRQ routing table, example from ACPI 2.0a specification, 1226 section 6.2.8.1 */ 1227 /* Note: we provide the same info as the PCI routing 1228 table of the Bochs BIOS */ 1229 if_ctx = aml_if(aml_equal(aml_name("PICF"), aml_int(0))); 1230 aml_append(if_ctx, aml_return(aml_name("PRTP"))); 1231 aml_append(method, if_ctx); 1232 else_ctx = aml_else(); 1233 aml_append(else_ctx, aml_return(aml_name("PRTA"))); 1234 aml_append(method, else_ctx); 1235 } 1236 aml_append(pci0_scope, method); 1237 aml_append(sb_scope, pci0_scope); 1238 1239 aml_append(sb_scope, build_irq_status_method()); 1240 aml_append(sb_scope, build_iqcr_method(false)); 1241 1242 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQA"))); 1243 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQB"))); 1244 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQC"))); 1245 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQD"))); 1246 aml_append(sb_scope, build_link_dev("LNKE", 4, aml_name("PRQE"))); 1247 aml_append(sb_scope, build_link_dev("LNKF", 5, aml_name("PRQF"))); 1248 aml_append(sb_scope, build_link_dev("LNKG", 6, aml_name("PRQG"))); 1249 aml_append(sb_scope, build_link_dev("LNKH", 7, aml_name("PRQH"))); 1250 1251 aml_append(sb_scope, build_gsi_link_dev("GSIA", 0x10, 0x10)); 1252 aml_append(sb_scope, build_gsi_link_dev("GSIB", 0x11, 0x11)); 1253 aml_append(sb_scope, build_gsi_link_dev("GSIC", 0x12, 0x12)); 1254 aml_append(sb_scope, build_gsi_link_dev("GSID", 0x13, 0x13)); 1255 aml_append(sb_scope, build_gsi_link_dev("GSIE", 0x14, 0x14)); 1256 aml_append(sb_scope, build_gsi_link_dev("GSIF", 0x15, 0x15)); 1257 aml_append(sb_scope, build_gsi_link_dev("GSIG", 0x16, 0x16)); 1258 aml_append(sb_scope, build_gsi_link_dev("GSIH", 0x17, 0x17)); 1259 1260 aml_append(table, sb_scope); 1261 } 1262 1263 static Aml *build_q35_dram_controller(const AcpiMcfgInfo *mcfg) 1264 { 1265 Aml *dev; 1266 Aml *resource_template; 1267 1268 /* DRAM controller */ 1269 dev = aml_device("DRAC"); 1270 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0C01"))); 1271 1272 resource_template = aml_resource_template(); 1273 if (mcfg->base + mcfg->size - 1 >= (1ULL << 32)) { 1274 aml_append(resource_template, 1275 aml_qword_memory(AML_POS_DECODE, 1276 AML_MIN_FIXED, 1277 AML_MAX_FIXED, 1278 AML_NON_CACHEABLE, 1279 AML_READ_WRITE, 1280 0x0000000000000000, 1281 mcfg->base, 1282 mcfg->base + mcfg->size - 1, 1283 0x0000000000000000, 1284 mcfg->size)); 1285 } else { 1286 aml_append(resource_template, 1287 aml_dword_memory(AML_POS_DECODE, 1288 AML_MIN_FIXED, 1289 AML_MAX_FIXED, 1290 AML_NON_CACHEABLE, 1291 AML_READ_WRITE, 1292 0x0000000000000000, 1293 mcfg->base, 1294 mcfg->base + mcfg->size - 1, 1295 0x0000000000000000, 1296 mcfg->size)); 1297 } 1298 aml_append(dev, aml_name_decl("_CRS", resource_template)); 1299 1300 return dev; 1301 } 1302 1303 static void build_x86_acpi_pci_hotplug(Aml *table, uint64_t pcihp_addr) 1304 { 1305 Aml *scope; 1306 Aml *field; 1307 Aml *method; 1308 1309 scope = aml_scope("_SB.PCI0"); 1310 1311 aml_append(scope, 1312 aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(pcihp_addr), 0x08)); 1313 field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1314 aml_append(field, aml_named_field("PCIU", 32)); 1315 aml_append(field, aml_named_field("PCID", 32)); 1316 aml_append(scope, field); 1317 1318 aml_append(scope, 1319 aml_operation_region("SEJ", AML_SYSTEM_IO, 1320 aml_int(pcihp_addr + ACPI_PCIHP_SEJ_BASE), 0x04)); 1321 field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1322 aml_append(field, aml_named_field("B0EJ", 32)); 1323 aml_append(scope, field); 1324 1325 aml_append(scope, 1326 aml_operation_region("BNMR", AML_SYSTEM_IO, 1327 aml_int(pcihp_addr + ACPI_PCIHP_BNMR_BASE), 0x08)); 1328 field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1329 aml_append(field, aml_named_field("BNUM", 32)); 1330 aml_append(field, aml_named_field("PIDX", 32)); 1331 aml_append(scope, field); 1332 1333 aml_append(scope, aml_mutex("BLCK", 0)); 1334 1335 method = aml_method("PCEJ", 2, AML_NOTSERIALIZED); 1336 aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF)); 1337 aml_append(method, aml_store(aml_arg(0), aml_name("BNUM"))); 1338 aml_append(method, 1339 aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ"))); 1340 aml_append(method, aml_release(aml_name("BLCK"))); 1341 aml_append(method, aml_return(aml_int(0))); 1342 aml_append(scope, method); 1343 1344 method = aml_method("AIDX", 2, AML_NOTSERIALIZED); 1345 aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF)); 1346 aml_append(method, aml_store(aml_arg(0), aml_name("BNUM"))); 1347 aml_append(method, 1348 aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("PIDX"))); 1349 aml_append(method, aml_store(aml_name("PIDX"), aml_local(0))); 1350 aml_append(method, aml_release(aml_name("BLCK"))); 1351 aml_append(method, aml_return(aml_local(0))); 1352 aml_append(scope, method); 1353 1354 aml_append(scope, aml_pci_pdsm()); 1355 1356 aml_append(table, scope); 1357 } 1358 1359 static Aml *build_q35_osc_method(bool enable_native_pcie_hotplug) 1360 { 1361 Aml *if_ctx; 1362 Aml *if_ctx2; 1363 Aml *else_ctx; 1364 Aml *method; 1365 Aml *a_cwd1 = aml_name("CDW1"); 1366 Aml *a_ctrl = aml_local(0); 1367 1368 method = aml_method("_OSC", 4, AML_NOTSERIALIZED); 1369 aml_append(method, aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1")); 1370 1371 if_ctx = aml_if(aml_equal( 1372 aml_arg(0), aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766"))); 1373 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2")); 1374 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3")); 1375 1376 aml_append(if_ctx, aml_store(aml_name("CDW3"), a_ctrl)); 1377 1378 /* 1379 * Always allow native PME, AER (no dependencies) 1380 * Allow SHPC (PCI bridges can have SHPC controller) 1381 * Disable PCIe Native Hot-plug if ACPI PCI Hot-plug is enabled. 1382 */ 1383 aml_append(if_ctx, aml_and(a_ctrl, 1384 aml_int(0x1E | (enable_native_pcie_hotplug ? 0x1 : 0x0)), a_ctrl)); 1385 1386 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1)))); 1387 /* Unknown revision */ 1388 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x08), a_cwd1)); 1389 aml_append(if_ctx, if_ctx2); 1390 1391 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), a_ctrl))); 1392 /* Capabilities bits were masked */ 1393 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x10), a_cwd1)); 1394 aml_append(if_ctx, if_ctx2); 1395 1396 /* Update DWORD3 in the buffer */ 1397 aml_append(if_ctx, aml_store(a_ctrl, aml_name("CDW3"))); 1398 aml_append(method, if_ctx); 1399 1400 else_ctx = aml_else(); 1401 /* Unrecognized UUID */ 1402 aml_append(else_ctx, aml_or(a_cwd1, aml_int(4), a_cwd1)); 1403 aml_append(method, else_ctx); 1404 1405 aml_append(method, aml_return(aml_arg(3))); 1406 return method; 1407 } 1408 1409 static void build_acpi0017(Aml *table) 1410 { 1411 Aml *dev, *scope, *method; 1412 1413 scope = aml_scope("_SB"); 1414 dev = aml_device("CXLM"); 1415 aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0017"))); 1416 1417 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1418 aml_append(method, aml_return(aml_int(0x0B))); 1419 aml_append(dev, method); 1420 build_cxl_dsm_method(dev); 1421 1422 aml_append(scope, dev); 1423 aml_append(table, scope); 1424 } 1425 1426 static void 1427 build_dsdt(GArray *table_data, BIOSLinker *linker, 1428 AcpiPmInfo *pm, AcpiMiscInfo *misc, 1429 Range *pci_hole, Range *pci_hole64, MachineState *machine) 1430 { 1431 Object *i440fx = object_resolve_type_unambiguous(TYPE_I440FX_PCI_HOST_BRIDGE); 1432 Object *q35 = object_resolve_type_unambiguous(TYPE_Q35_HOST_DEVICE); 1433 CrsRangeEntry *entry; 1434 Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs; 1435 CrsRangeSet crs_range_set; 1436 PCMachineState *pcms = PC_MACHINE(machine); 1437 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine); 1438 X86MachineState *x86ms = X86_MACHINE(machine); 1439 AcpiMcfgInfo mcfg; 1440 bool mcfg_valid = !!acpi_get_mcfg(&mcfg); 1441 uint32_t nr_mem = machine->ram_slots; 1442 int root_bus_limit = 0xFF; 1443 PCIBus *bus = NULL; 1444 #ifdef CONFIG_TPM 1445 TPMIf *tpm = tpm_find(); 1446 #endif 1447 bool cxl_present = false; 1448 int i; 1449 VMBusBridge *vmbus_bridge = vmbus_bridge_find(); 1450 AcpiTable table = { .sig = "DSDT", .rev = 1, .oem_id = x86ms->oem_id, 1451 .oem_table_id = x86ms->oem_table_id }; 1452 1453 assert(!!i440fx != !!q35); 1454 1455 acpi_table_begin(&table, table_data); 1456 dsdt = init_aml_allocator(); 1457 1458 build_dbg_aml(dsdt); 1459 if (i440fx) { 1460 sb_scope = aml_scope("_SB"); 1461 dev = aml_device("PCI0"); 1462 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); 1463 aml_append(dev, aml_name_decl("_UID", aml_int(pcmc->pci_root_uid))); 1464 aml_append(dev, aml_pci_edsm()); 1465 aml_append(sb_scope, dev); 1466 aml_append(dsdt, sb_scope); 1467 1468 if (pm->pcihp_bridge_en || pm->pcihp_root_en) { 1469 build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base); 1470 } 1471 build_piix4_pci0_int(dsdt); 1472 } else if (q35) { 1473 sb_scope = aml_scope("_SB"); 1474 dev = aml_device("PCI0"); 1475 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); 1476 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); 1477 aml_append(dev, aml_name_decl("_UID", aml_int(pcmc->pci_root_uid))); 1478 aml_append(dev, build_q35_osc_method(!pm->pcihp_bridge_en)); 1479 aml_append(dev, aml_pci_edsm()); 1480 aml_append(sb_scope, dev); 1481 if (mcfg_valid) { 1482 aml_append(sb_scope, build_q35_dram_controller(&mcfg)); 1483 } 1484 1485 if (pm->smi_on_cpuhp) { 1486 /* reserve SMI block resources, IO ports 0xB2, 0xB3 */ 1487 dev = aml_device("PCI0.SMI0"); 1488 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06"))); 1489 aml_append(dev, aml_name_decl("_UID", aml_string("SMI resources"))); 1490 crs = aml_resource_template(); 1491 aml_append(crs, 1492 aml_io( 1493 AML_DECODE16, 1494 pm->fadt.smi_cmd, 1495 pm->fadt.smi_cmd, 1496 1, 1497 2) 1498 ); 1499 aml_append(dev, aml_name_decl("_CRS", crs)); 1500 aml_append(dev, aml_operation_region("SMIR", AML_SYSTEM_IO, 1501 aml_int(pm->fadt.smi_cmd), 2)); 1502 field = aml_field("SMIR", AML_BYTE_ACC, AML_NOLOCK, 1503 AML_WRITE_AS_ZEROS); 1504 aml_append(field, aml_named_field("SMIC", 8)); 1505 aml_append(field, aml_reserved_field(8)); 1506 aml_append(dev, field); 1507 aml_append(sb_scope, dev); 1508 } 1509 1510 aml_append(dsdt, sb_scope); 1511 1512 if (pm->pcihp_bridge_en) { 1513 build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base); 1514 } 1515 build_q35_pci0_int(dsdt); 1516 } 1517 1518 if (misc->has_hpet) { 1519 build_hpet_aml(dsdt); 1520 } 1521 1522 if (vmbus_bridge) { 1523 sb_scope = aml_scope("_SB"); 1524 aml_append(sb_scope, build_vmbus_device_aml(vmbus_bridge)); 1525 aml_append(dsdt, sb_scope); 1526 } 1527 1528 scope = aml_scope("_GPE"); 1529 { 1530 aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006"))); 1531 if (machine->nvdimms_state->is_enabled) { 1532 method = aml_method("_E04", 0, AML_NOTSERIALIZED); 1533 aml_append(method, aml_notify(aml_name("\\_SB.NVDR"), 1534 aml_int(0x80))); 1535 aml_append(scope, method); 1536 } 1537 } 1538 aml_append(dsdt, scope); 1539 1540 if (pcmc->legacy_cpu_hotplug) { 1541 build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base); 1542 } else { 1543 CPUHotplugFeatures opts = { 1544 .acpi_1_compatible = true, .has_legacy_cphp = true, 1545 .smi_path = pm->smi_on_cpuhp ? "\\_SB.PCI0.SMI0.SMIC" : NULL, 1546 .fw_unplugs_cpu = pm->smi_on_cpu_unplug, 1547 }; 1548 build_cpus_aml(dsdt, machine, opts, pc_madt_cpu_entry, 1549 pm->cpu_hp_io_base, "\\_SB.PCI0", "\\_GPE._E02"); 1550 } 1551 1552 if (pcms->memhp_io_base && nr_mem) { 1553 build_memory_hotplug_aml(dsdt, nr_mem, "\\_SB.PCI0", 1554 "\\_GPE._E03", AML_SYSTEM_IO, 1555 pcms->memhp_io_base); 1556 } 1557 1558 crs_range_set_init(&crs_range_set); 1559 bus = PC_MACHINE(machine)->bus; 1560 if (bus) { 1561 QLIST_FOREACH(bus, &bus->child, sibling) { 1562 uint8_t bus_num = pci_bus_num(bus); 1563 uint8_t numa_node = pci_bus_numa_node(bus); 1564 1565 /* look only for expander root buses */ 1566 if (!pci_bus_is_root(bus)) { 1567 continue; 1568 } 1569 1570 if (bus_num < root_bus_limit) { 1571 root_bus_limit = bus_num - 1; 1572 } 1573 1574 scope = aml_scope("\\_SB"); 1575 1576 if (pci_bus_is_cxl(bus)) { 1577 dev = aml_device("CL%.02X", bus_num); 1578 } else { 1579 dev = aml_device("PC%.02X", bus_num); 1580 } 1581 aml_append(dev, aml_name_decl("_UID", aml_int(bus_num))); 1582 aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); 1583 if (pci_bus_is_cxl(bus)) { 1584 struct Aml *aml_pkg = aml_package(2); 1585 1586 aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0016"))); 1587 aml_append(aml_pkg, aml_eisaid("PNP0A08")); 1588 aml_append(aml_pkg, aml_eisaid("PNP0A03")); 1589 aml_append(dev, aml_name_decl("_CID", aml_pkg)); 1590 build_cxl_osc_method(dev); 1591 } else if (pci_bus_is_express(bus)) { 1592 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); 1593 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); 1594 1595 /* Expander bridges do not have ACPI PCI Hot-plug enabled */ 1596 aml_append(dev, build_q35_osc_method(true)); 1597 } else { 1598 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); 1599 } 1600 1601 if (numa_node != NUMA_NODE_UNASSIGNED) { 1602 aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node))); 1603 } 1604 1605 aml_append(dev, build_prt(false)); 1606 crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set, 1607 0, 0, 0, 0); 1608 aml_append(dev, aml_name_decl("_CRS", crs)); 1609 aml_append(scope, dev); 1610 aml_append(dsdt, scope); 1611 1612 /* Handle the ranges for the PXB expanders */ 1613 if (pci_bus_is_cxl(bus)) { 1614 MemoryRegion *mr = &pcms->cxl_devices_state.host_mr; 1615 uint64_t base = mr->addr; 1616 1617 cxl_present = true; 1618 crs_range_insert(crs_range_set.mem_ranges, base, 1619 base + memory_region_size(mr) - 1); 1620 } 1621 } 1622 } 1623 1624 if (cxl_present) { 1625 build_acpi0017(dsdt); 1626 } 1627 1628 /* 1629 * At this point crs_range_set has all the ranges used by pci 1630 * busses *other* than PCI0. These ranges will be excluded from 1631 * the PCI0._CRS. Add mmconfig to the set so it will be excluded 1632 * too. 1633 */ 1634 if (mcfg_valid) { 1635 crs_range_insert(crs_range_set.mem_ranges, 1636 mcfg.base, mcfg.base + mcfg.size - 1); 1637 } 1638 1639 scope = aml_scope("\\_SB.PCI0"); 1640 /* build PCI0._CRS */ 1641 crs = aml_resource_template(); 1642 aml_append(crs, 1643 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, 1644 0x0000, 0x0, root_bus_limit, 1645 0x0000, root_bus_limit + 1)); 1646 aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08)); 1647 1648 aml_append(crs, 1649 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 1650 AML_POS_DECODE, AML_ENTIRE_RANGE, 1651 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8)); 1652 1653 crs_replace_with_free_ranges(crs_range_set.io_ranges, 0x0D00, 0xFFFF); 1654 for (i = 0; i < crs_range_set.io_ranges->len; i++) { 1655 entry = g_ptr_array_index(crs_range_set.io_ranges, i); 1656 aml_append(crs, 1657 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 1658 AML_POS_DECODE, AML_ENTIRE_RANGE, 1659 0x0000, entry->base, entry->limit, 1660 0x0000, entry->limit - entry->base + 1)); 1661 } 1662 1663 aml_append(crs, 1664 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 1665 AML_CACHEABLE, AML_READ_WRITE, 1666 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000)); 1667 1668 crs_replace_with_free_ranges(crs_range_set.mem_ranges, 1669 range_lob(pci_hole), 1670 range_upb(pci_hole)); 1671 for (i = 0; i < crs_range_set.mem_ranges->len; i++) { 1672 entry = g_ptr_array_index(crs_range_set.mem_ranges, i); 1673 aml_append(crs, 1674 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 1675 AML_NON_CACHEABLE, AML_READ_WRITE, 1676 0, entry->base, entry->limit, 1677 0, entry->limit - entry->base + 1)); 1678 } 1679 1680 if (!range_is_empty(pci_hole64)) { 1681 crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges, 1682 range_lob(pci_hole64), 1683 range_upb(pci_hole64)); 1684 for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) { 1685 entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i); 1686 aml_append(crs, 1687 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, 1688 AML_MAX_FIXED, 1689 AML_CACHEABLE, AML_READ_WRITE, 1690 0, entry->base, entry->limit, 1691 0, entry->limit - entry->base + 1)); 1692 } 1693 } 1694 1695 #ifdef CONFIG_TPM 1696 if (TPM_IS_TIS_ISA(tpm_find())) { 1697 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE, 1698 TPM_TIS_ADDR_SIZE, AML_READ_WRITE)); 1699 } 1700 #endif 1701 aml_append(scope, aml_name_decl("_CRS", crs)); 1702 1703 /* reserve GPE0 block resources */ 1704 dev = aml_device("GPE0"); 1705 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 1706 aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources"))); 1707 /* device present, functioning, decoding, not shown in UI */ 1708 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 1709 crs = aml_resource_template(); 1710 aml_append(crs, 1711 aml_io( 1712 AML_DECODE16, 1713 pm->fadt.gpe0_blk.address, 1714 pm->fadt.gpe0_blk.address, 1715 1, 1716 pm->fadt.gpe0_blk.bit_width / 8) 1717 ); 1718 aml_append(dev, aml_name_decl("_CRS", crs)); 1719 aml_append(scope, dev); 1720 1721 crs_range_set_free(&crs_range_set); 1722 1723 /* reserve PCIHP resources */ 1724 if (pm->pcihp_io_len && (pm->pcihp_bridge_en || pm->pcihp_root_en)) { 1725 dev = aml_device("PHPR"); 1726 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 1727 aml_append(dev, 1728 aml_name_decl("_UID", aml_string("PCI Hotplug resources"))); 1729 /* device present, functioning, decoding, not shown in UI */ 1730 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 1731 crs = aml_resource_template(); 1732 aml_append(crs, 1733 aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1, 1734 pm->pcihp_io_len) 1735 ); 1736 aml_append(dev, aml_name_decl("_CRS", crs)); 1737 aml_append(scope, dev); 1738 } 1739 aml_append(dsdt, scope); 1740 1741 /* create S3_ / S4_ / S5_ packages if necessary */ 1742 scope = aml_scope("\\"); 1743 if (!pm->s3_disabled) { 1744 pkg = aml_package(4); 1745 aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */ 1746 aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ 1747 aml_append(pkg, aml_int(0)); /* reserved */ 1748 aml_append(pkg, aml_int(0)); /* reserved */ 1749 aml_append(scope, aml_name_decl("_S3", pkg)); 1750 } 1751 1752 if (!pm->s4_disabled) { 1753 pkg = aml_package(4); 1754 aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */ 1755 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ 1756 aml_append(pkg, aml_int(pm->s4_val)); 1757 aml_append(pkg, aml_int(0)); /* reserved */ 1758 aml_append(pkg, aml_int(0)); /* reserved */ 1759 aml_append(scope, aml_name_decl("_S4", pkg)); 1760 } 1761 1762 pkg = aml_package(4); 1763 aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */ 1764 aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */ 1765 aml_append(pkg, aml_int(0)); /* reserved */ 1766 aml_append(pkg, aml_int(0)); /* reserved */ 1767 aml_append(scope, aml_name_decl("_S5", pkg)); 1768 aml_append(dsdt, scope); 1769 1770 /* create fw_cfg node, unconditionally */ 1771 { 1772 scope = aml_scope("\\_SB.PCI0"); 1773 fw_cfg_add_acpi_dsdt(scope, x86ms->fw_cfg); 1774 aml_append(dsdt, scope); 1775 } 1776 1777 sb_scope = aml_scope("\\_SB"); 1778 { 1779 Object *pci_host = acpi_get_i386_pci_host(); 1780 1781 if (pci_host) { 1782 PCIBus *pbus = PCI_HOST_BRIDGE(pci_host)->bus; 1783 Aml *ascope = aml_scope("PCI0"); 1784 /* Scan all PCI buses. Generate tables to support hotplug. */ 1785 build_append_pci_bus_devices(ascope, pbus); 1786 if (object_property_find(OBJECT(pbus), ACPI_PCIHP_PROP_BSEL)) { 1787 build_append_pcihp_slots(ascope, pbus); 1788 } 1789 aml_append(sb_scope, ascope); 1790 } 1791 } 1792 1793 #ifdef CONFIG_TPM 1794 if (TPM_IS_CRB(tpm)) { 1795 dev = aml_device("TPM"); 1796 aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); 1797 aml_append(dev, aml_name_decl("_STR", 1798 aml_string("TPM 2.0 Device"))); 1799 crs = aml_resource_template(); 1800 aml_append(crs, aml_memory32_fixed(TPM_CRB_ADDR_BASE, 1801 TPM_CRB_ADDR_SIZE, AML_READ_WRITE)); 1802 aml_append(dev, aml_name_decl("_CRS", crs)); 1803 1804 aml_append(dev, aml_name_decl("_STA", aml_int(0xf))); 1805 aml_append(dev, aml_name_decl("_UID", aml_int(1))); 1806 1807 tpm_build_ppi_acpi(tpm, dev); 1808 1809 aml_append(sb_scope, dev); 1810 } 1811 #endif 1812 1813 if (pcms->sgx_epc.size != 0) { 1814 uint64_t epc_base = pcms->sgx_epc.base; 1815 uint64_t epc_size = pcms->sgx_epc.size; 1816 1817 dev = aml_device("EPC"); 1818 aml_append(dev, aml_name_decl("_HID", aml_eisaid("INT0E0C"))); 1819 aml_append(dev, aml_name_decl("_STR", 1820 aml_unicode("Enclave Page Cache 1.0"))); 1821 crs = aml_resource_template(); 1822 aml_append(crs, 1823 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, 1824 AML_MAX_FIXED, AML_NON_CACHEABLE, 1825 AML_READ_WRITE, 0, epc_base, 1826 epc_base + epc_size - 1, 0, epc_size)); 1827 aml_append(dev, aml_name_decl("_CRS", crs)); 1828 1829 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1830 aml_append(method, aml_return(aml_int(0x0f))); 1831 aml_append(dev, method); 1832 1833 aml_append(sb_scope, dev); 1834 } 1835 aml_append(dsdt, sb_scope); 1836 1837 if (pm->pcihp_bridge_en || pm->pcihp_root_en) { 1838 bool has_pcnt; 1839 1840 Object *pci_host = acpi_get_i386_pci_host(); 1841 PCIBus *b = PCI_HOST_BRIDGE(pci_host)->bus; 1842 1843 scope = aml_scope("\\_SB.PCI0"); 1844 has_pcnt = build_append_notfication_callback(scope, b); 1845 if (has_pcnt) { 1846 aml_append(dsdt, scope); 1847 } 1848 1849 scope = aml_scope("_GPE"); 1850 { 1851 method = aml_method("_E01", 0, AML_NOTSERIALIZED); 1852 if (has_pcnt) { 1853 aml_append(method, 1854 aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF)); 1855 aml_append(method, aml_call0("\\_SB.PCI0.PCNT")); 1856 aml_append(method, aml_release(aml_name("\\_SB.PCI0.BLCK"))); 1857 } 1858 aml_append(scope, method); 1859 } 1860 aml_append(dsdt, scope); 1861 } 1862 1863 /* copy AML table into ACPI tables blob and patch header there */ 1864 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); 1865 acpi_table_end(linker, &table); 1866 free_aml_allocator(); 1867 } 1868 1869 /* 1870 * IA-PC HPET (High Precision Event Timers) Specification (Revision: 1.0a) 1871 * 3.2.4The ACPI 2.0 HPET Description Table (HPET) 1872 */ 1873 static void 1874 build_hpet(GArray *table_data, BIOSLinker *linker, const char *oem_id, 1875 const char *oem_table_id) 1876 { 1877 AcpiTable table = { .sig = "HPET", .rev = 1, 1878 .oem_id = oem_id, .oem_table_id = oem_table_id }; 1879 1880 acpi_table_begin(&table, table_data); 1881 /* Note timer_block_id value must be kept in sync with value advertised by 1882 * emulated hpet 1883 */ 1884 /* Event Timer Block ID */ 1885 build_append_int_noprefix(table_data, 0x8086a201, 4); 1886 /* BASE_ADDRESS */ 1887 build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 0, 0, 0, HPET_BASE); 1888 /* HPET Number */ 1889 build_append_int_noprefix(table_data, 0, 1); 1890 /* Main Counter Minimum Clock_tick in Periodic Mode */ 1891 build_append_int_noprefix(table_data, 0, 2); 1892 /* Page Protection And OEM Attribute */ 1893 build_append_int_noprefix(table_data, 0, 1); 1894 acpi_table_end(linker, &table); 1895 } 1896 1897 #ifdef CONFIG_TPM 1898 /* 1899 * TCPA Description Table 1900 * 1901 * Following Level 00, Rev 00.37 of specs: 1902 * http://www.trustedcomputinggroup.org/resources/tcg_acpi_specification 1903 * 7.1.2 ACPI Table Layout 1904 */ 1905 static void 1906 build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog, 1907 const char *oem_id, const char *oem_table_id) 1908 { 1909 unsigned log_addr_offset; 1910 AcpiTable table = { .sig = "TCPA", .rev = 2, 1911 .oem_id = oem_id, .oem_table_id = oem_table_id }; 1912 1913 acpi_table_begin(&table, table_data); 1914 /* Platform Class */ 1915 build_append_int_noprefix(table_data, TPM_TCPA_ACPI_CLASS_CLIENT, 2); 1916 /* Log Area Minimum Length (LAML) */ 1917 build_append_int_noprefix(table_data, TPM_LOG_AREA_MINIMUM_SIZE, 4); 1918 /* Log Area Start Address (LASA) */ 1919 log_addr_offset = table_data->len; 1920 build_append_int_noprefix(table_data, 0, 8); 1921 1922 /* allocate/reserve space for TPM log area */ 1923 acpi_data_push(tcpalog, TPM_LOG_AREA_MINIMUM_SIZE); 1924 bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, tcpalog, 1, 1925 false /* high memory */); 1926 /* log area start address to be filled by Guest linker */ 1927 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, 1928 log_addr_offset, 8, ACPI_BUILD_TPMLOG_FILE, 0); 1929 1930 acpi_table_end(linker, &table); 1931 } 1932 #endif 1933 1934 #define HOLE_640K_START (640 * KiB) 1935 #define HOLE_640K_END (1 * MiB) 1936 1937 /* 1938 * ACPI spec, Revision 3.0 1939 * 5.2.15 System Resource Affinity Table (SRAT) 1940 */ 1941 static void 1942 build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) 1943 { 1944 int i; 1945 int numa_mem_start, slots; 1946 uint64_t mem_len, mem_base, next_base; 1947 MachineClass *mc = MACHINE_GET_CLASS(machine); 1948 X86MachineState *x86ms = X86_MACHINE(machine); 1949 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine); 1950 int nb_numa_nodes = machine->numa_state->num_nodes; 1951 NodeInfo *numa_info = machine->numa_state->nodes; 1952 AcpiTable table = { .sig = "SRAT", .rev = 1, .oem_id = x86ms->oem_id, 1953 .oem_table_id = x86ms->oem_table_id }; 1954 1955 acpi_table_begin(&table, table_data); 1956 build_append_int_noprefix(table_data, 1, 4); /* Reserved */ 1957 build_append_int_noprefix(table_data, 0, 8); /* Reserved */ 1958 1959 for (i = 0; i < apic_ids->len; i++) { 1960 int node_id = apic_ids->cpus[i].props.node_id; 1961 uint32_t apic_id = apic_ids->cpus[i].arch_id; 1962 1963 if (apic_id < 255) { 1964 /* 5.2.15.1 Processor Local APIC/SAPIC Affinity Structure */ 1965 build_append_int_noprefix(table_data, 0, 1); /* Type */ 1966 build_append_int_noprefix(table_data, 16, 1); /* Length */ 1967 /* Proximity Domain [7:0] */ 1968 build_append_int_noprefix(table_data, node_id, 1); 1969 build_append_int_noprefix(table_data, apic_id, 1); /* APIC ID */ 1970 /* Flags, Table 5-36 */ 1971 build_append_int_noprefix(table_data, 1, 4); 1972 build_append_int_noprefix(table_data, 0, 1); /* Local SAPIC EID */ 1973 /* Proximity Domain [31:8] */ 1974 build_append_int_noprefix(table_data, 0, 3); 1975 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 1976 } else { 1977 /* 1978 * ACPI spec, Revision 4.0 1979 * 5.2.16.3 Processor Local x2APIC Affinity Structure 1980 */ 1981 build_append_int_noprefix(table_data, 2, 1); /* Type */ 1982 build_append_int_noprefix(table_data, 24, 1); /* Length */ 1983 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 1984 /* Proximity Domain */ 1985 build_append_int_noprefix(table_data, node_id, 4); 1986 build_append_int_noprefix(table_data, apic_id, 4); /* X2APIC ID */ 1987 /* Flags, Table 5-39 */ 1988 build_append_int_noprefix(table_data, 1 /* Enabled */, 4); 1989 build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */ 1990 build_append_int_noprefix(table_data, 0, 4); /* Reserved */ 1991 } 1992 } 1993 1994 /* the memory map is a bit tricky, it contains at least one hole 1995 * from 640k-1M and possibly another one from 3.5G-4G. 1996 */ 1997 next_base = 0; 1998 numa_mem_start = table_data->len; 1999 2000 for (i = 1; i < nb_numa_nodes + 1; ++i) { 2001 mem_base = next_base; 2002 mem_len = numa_info[i - 1].node_mem; 2003 next_base = mem_base + mem_len; 2004 2005 /* Cut out the 640K hole */ 2006 if (mem_base <= HOLE_640K_START && 2007 next_base > HOLE_640K_START) { 2008 mem_len -= next_base - HOLE_640K_START; 2009 if (mem_len > 0) { 2010 build_srat_memory(table_data, mem_base, mem_len, i - 1, 2011 MEM_AFFINITY_ENABLED); 2012 } 2013 2014 /* Check for the rare case: 640K < RAM < 1M */ 2015 if (next_base <= HOLE_640K_END) { 2016 next_base = HOLE_640K_END; 2017 continue; 2018 } 2019 mem_base = HOLE_640K_END; 2020 mem_len = next_base - HOLE_640K_END; 2021 } 2022 2023 /* Cut out the ACPI_PCI hole */ 2024 if (mem_base <= x86ms->below_4g_mem_size && 2025 next_base > x86ms->below_4g_mem_size) { 2026 mem_len -= next_base - x86ms->below_4g_mem_size; 2027 if (mem_len > 0) { 2028 build_srat_memory(table_data, mem_base, mem_len, i - 1, 2029 MEM_AFFINITY_ENABLED); 2030 } 2031 mem_base = x86ms->above_4g_mem_start; 2032 mem_len = next_base - x86ms->below_4g_mem_size; 2033 next_base = mem_base + mem_len; 2034 } 2035 2036 if (mem_len > 0) { 2037 build_srat_memory(table_data, mem_base, mem_len, i - 1, 2038 MEM_AFFINITY_ENABLED); 2039 } 2040 } 2041 2042 if (machine->nvdimms_state->is_enabled) { 2043 nvdimm_build_srat(table_data); 2044 } 2045 2046 sgx_epc_build_srat(table_data); 2047 2048 /* 2049 * TODO: this part is not in ACPI spec and current linux kernel boots fine 2050 * without these entries. But I recall there were issues the last time I 2051 * tried to remove it with some ancient guest OS, however I can't remember 2052 * what that was so keep this around for now 2053 */ 2054 slots = (table_data->len - numa_mem_start) / 40 /* mem affinity len */; 2055 for (; slots < nb_numa_nodes + 2; slots++) { 2056 build_srat_memory(table_data, 0, 0, 0, MEM_AFFINITY_NOFLAGS); 2057 } 2058 2059 /* 2060 * Entry is required for Windows to enable memory hotplug in OS 2061 * and for Linux to enable SWIOTLB when booted with less than 2062 * 4G of RAM. Windows works better if the entry sets proximity 2063 * to the highest NUMA node in the machine. 2064 * Memory devices may override proximity set by this entry, 2065 * providing _PXM method if necessary. 2066 */ 2067 if (machine->device_memory) { 2068 build_srat_memory(table_data, machine->device_memory->base, 2069 memory_region_size(&machine->device_memory->mr), 2070 nb_numa_nodes - 1, 2071 MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); 2072 } 2073 2074 acpi_table_end(linker, &table); 2075 } 2076 2077 /* 2078 * Insert DMAR scope for PCI bridges and endpoint devices 2079 */ 2080 static void 2081 insert_scope(PCIBus *bus, PCIDevice *dev, void *opaque) 2082 { 2083 const size_t device_scope_size = 6 /* device scope structure */ + 2084 2 /* 1 path entry */; 2085 GArray *scope_blob = opaque; 2086 2087 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { 2088 /* Dmar Scope Type: 0x02 for PCI Bridge */ 2089 build_append_int_noprefix(scope_blob, 0x02, 1); 2090 } else { 2091 /* Dmar Scope Type: 0x01 for PCI Endpoint Device */ 2092 build_append_int_noprefix(scope_blob, 0x01, 1); 2093 } 2094 2095 /* length */ 2096 build_append_int_noprefix(scope_blob, device_scope_size, 1); 2097 /* reserved */ 2098 build_append_int_noprefix(scope_blob, 0, 2); 2099 /* enumeration_id */ 2100 build_append_int_noprefix(scope_blob, 0, 1); 2101 /* bus */ 2102 build_append_int_noprefix(scope_blob, pci_bus_num(bus), 1); 2103 /* device */ 2104 build_append_int_noprefix(scope_blob, PCI_SLOT(dev->devfn), 1); 2105 /* function */ 2106 build_append_int_noprefix(scope_blob, PCI_FUNC(dev->devfn), 1); 2107 } 2108 2109 /* For a given PCI host bridge, walk and insert DMAR scope */ 2110 static int 2111 dmar_host_bridges(Object *obj, void *opaque) 2112 { 2113 GArray *scope_blob = opaque; 2114 2115 if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) { 2116 PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus; 2117 2118 if (bus && !pci_bus_bypass_iommu(bus)) { 2119 pci_for_each_device_under_bus(bus, insert_scope, scope_blob); 2120 } 2121 } 2122 2123 return 0; 2124 } 2125 2126 /* 2127 * Intel ® Virtualization Technology for Directed I/O 2128 * Architecture Specification. Revision 3.3 2129 * 8.1 DMA Remapping Reporting Structure 2130 */ 2131 static void 2132 build_dmar_q35(GArray *table_data, BIOSLinker *linker, const char *oem_id, 2133 const char *oem_table_id) 2134 { 2135 uint8_t dmar_flags = 0; 2136 uint8_t rsvd10[10] = {}; 2137 /* Root complex IOAPIC uses one path only */ 2138 const size_t ioapic_scope_size = 6 /* device scope structure */ + 2139 2 /* 1 path entry */; 2140 X86IOMMUState *iommu = x86_iommu_get_default(); 2141 IntelIOMMUState *intel_iommu = INTEL_IOMMU_DEVICE(iommu); 2142 GArray *scope_blob = g_array_new(false, true, 1); 2143 2144 AcpiTable table = { .sig = "DMAR", .rev = 1, .oem_id = oem_id, 2145 .oem_table_id = oem_table_id }; 2146 2147 /* 2148 * A PCI bus walk, for each PCI host bridge. 2149 * Insert scope for each PCI bridge and endpoint device which 2150 * is attached to a bus with iommu enabled. 2151 */ 2152 object_child_foreach_recursive(object_get_root(), 2153 dmar_host_bridges, scope_blob); 2154 2155 assert(iommu); 2156 if (x86_iommu_ir_supported(iommu)) { 2157 dmar_flags |= 0x1; /* Flags: 0x1: INT_REMAP */ 2158 } 2159 2160 acpi_table_begin(&table, table_data); 2161 /* Host Address Width */ 2162 build_append_int_noprefix(table_data, intel_iommu->aw_bits - 1, 1); 2163 build_append_int_noprefix(table_data, dmar_flags, 1); /* Flags */ 2164 g_array_append_vals(table_data, rsvd10, sizeof(rsvd10)); /* Reserved */ 2165 2166 /* 8.3 DMAR Remapping Hardware Unit Definition structure */ 2167 build_append_int_noprefix(table_data, 0, 2); /* Type */ 2168 /* Length */ 2169 build_append_int_noprefix(table_data, 2170 16 + ioapic_scope_size + scope_blob->len, 2); 2171 /* Flags */ 2172 build_append_int_noprefix(table_data, 0 /* Don't include all pci device */ , 2173 1); 2174 build_append_int_noprefix(table_data, 0 , 1); /* Reserved */ 2175 build_append_int_noprefix(table_data, 0 , 2); /* Segment Number */ 2176 /* Register Base Address */ 2177 build_append_int_noprefix(table_data, Q35_HOST_BRIDGE_IOMMU_ADDR , 8); 2178 2179 /* Scope definition for the root-complex IOAPIC. See VT-d spec 2180 * 8.3.1 (version Oct. 2014 or later). */ 2181 build_append_int_noprefix(table_data, 0x03 /* IOAPIC */, 1); /* Type */ 2182 build_append_int_noprefix(table_data, ioapic_scope_size, 1); /* Length */ 2183 build_append_int_noprefix(table_data, 0, 2); /* Reserved */ 2184 /* Enumeration ID */ 2185 build_append_int_noprefix(table_data, ACPI_BUILD_IOAPIC_ID, 1); 2186 /* Start Bus Number */ 2187 build_append_int_noprefix(table_data, Q35_PSEUDO_BUS_PLATFORM, 1); 2188 /* Path, {Device, Function} pair */ 2189 build_append_int_noprefix(table_data, PCI_SLOT(Q35_PSEUDO_DEVFN_IOAPIC), 1); 2190 build_append_int_noprefix(table_data, PCI_FUNC(Q35_PSEUDO_DEVFN_IOAPIC), 1); 2191 2192 /* Add scope found above */ 2193 g_array_append_vals(table_data, scope_blob->data, scope_blob->len); 2194 g_array_free(scope_blob, true); 2195 2196 if (iommu->dt_supported) { 2197 /* 8.5 Root Port ATS Capability Reporting Structure */ 2198 build_append_int_noprefix(table_data, 2, 2); /* Type */ 2199 build_append_int_noprefix(table_data, 8, 2); /* Length */ 2200 build_append_int_noprefix(table_data, 1 /* ALL_PORTS */, 1); /* Flags */ 2201 build_append_int_noprefix(table_data, 0, 1); /* Reserved */ 2202 build_append_int_noprefix(table_data, 0, 2); /* Segment Number */ 2203 } 2204 2205 acpi_table_end(linker, &table); 2206 } 2207 2208 /* 2209 * Windows ACPI Emulated Devices Table 2210 * (Version 1.0 - April 6, 2009) 2211 * Spec: http://download.microsoft.com/download/7/E/7/7E7662CF-CBEA-470B-A97E-CE7CE0D98DC2/WAET.docx 2212 * 2213 * Helpful to speedup Windows guests and ignored by others. 2214 */ 2215 static void 2216 build_waet(GArray *table_data, BIOSLinker *linker, const char *oem_id, 2217 const char *oem_table_id) 2218 { 2219 AcpiTable table = { .sig = "WAET", .rev = 1, .oem_id = oem_id, 2220 .oem_table_id = oem_table_id }; 2221 2222 acpi_table_begin(&table, table_data); 2223 /* 2224 * Set "ACPI PM timer good" flag. 2225 * 2226 * Tells Windows guests that our ACPI PM timer is reliable in the 2227 * sense that guest can read it only once to obtain a reliable value. 2228 * Which avoids costly VMExits caused by guest re-reading it unnecessarily. 2229 */ 2230 build_append_int_noprefix(table_data, 1 << 1 /* ACPI PM timer good */, 4); 2231 acpi_table_end(linker, &table); 2232 } 2233 2234 /* 2235 * IVRS table as specified in AMD IOMMU Specification v2.62, Section 5.2 2236 * accessible here http://support.amd.com/TechDocs/48882_IOMMU.pdf 2237 */ 2238 #define IOAPIC_SB_DEVID (uint64_t)PCI_BUILD_BDF(0, PCI_DEVFN(0x14, 0)) 2239 2240 /* 2241 * Insert IVHD entry for device and recurse, insert alias, or insert range as 2242 * necessary for the PCI topology. 2243 */ 2244 static void 2245 insert_ivhd(PCIBus *bus, PCIDevice *dev, void *opaque) 2246 { 2247 GArray *table_data = opaque; 2248 uint32_t entry; 2249 2250 /* "Select" IVHD entry, type 0x2 */ 2251 entry = PCI_BUILD_BDF(pci_bus_num(bus), dev->devfn) << 8 | 0x2; 2252 build_append_int_noprefix(table_data, entry, 4); 2253 2254 if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { 2255 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(dev)); 2256 uint8_t sec = pci_bus_num(sec_bus); 2257 uint8_t sub = dev->config[PCI_SUBORDINATE_BUS]; 2258 2259 if (pci_bus_is_express(sec_bus)) { 2260 /* 2261 * Walk the bus if there are subordinates, otherwise use a range 2262 * to cover an entire leaf bus. We could potentially also use a 2263 * range for traversed buses, but we'd need to take care not to 2264 * create both Select and Range entries covering the same device. 2265 * This is easier and potentially more compact. 2266 * 2267 * An example bare metal system seems to use Select entries for 2268 * root ports without a slot (ie. built-ins) and Range entries 2269 * when there is a slot. The same system also only hard-codes 2270 * the alias range for an onboard PCIe-to-PCI bridge, apparently 2271 * making no effort to support nested bridges. We attempt to 2272 * be more thorough here. 2273 */ 2274 if (sec == sub) { /* leaf bus */ 2275 /* "Start of Range" IVHD entry, type 0x3 */ 2276 entry = PCI_BUILD_BDF(sec, PCI_DEVFN(0, 0)) << 8 | 0x3; 2277 build_append_int_noprefix(table_data, entry, 4); 2278 /* "End of Range" IVHD entry, type 0x4 */ 2279 entry = PCI_BUILD_BDF(sub, PCI_DEVFN(31, 7)) << 8 | 0x4; 2280 build_append_int_noprefix(table_data, entry, 4); 2281 } else { 2282 pci_for_each_device(sec_bus, sec, insert_ivhd, table_data); 2283 } 2284 } else { 2285 /* 2286 * If the secondary bus is conventional, then we need to create an 2287 * Alias range for everything downstream. The range covers the 2288 * first devfn on the secondary bus to the last devfn on the 2289 * subordinate bus. The alias target depends on legacy versus 2290 * express bridges, just as in pci_device_iommu_address_space(). 2291 * DeviceIDa vs DeviceIDb as per the AMD IOMMU spec. 2292 */ 2293 uint16_t dev_id_a, dev_id_b; 2294 2295 dev_id_a = PCI_BUILD_BDF(sec, PCI_DEVFN(0, 0)); 2296 2297 if (pci_is_express(dev) && 2298 pcie_cap_get_type(dev) == PCI_EXP_TYPE_PCI_BRIDGE) { 2299 dev_id_b = dev_id_a; 2300 } else { 2301 dev_id_b = PCI_BUILD_BDF(pci_bus_num(bus), dev->devfn); 2302 } 2303 2304 /* "Alias Start of Range" IVHD entry, type 0x43, 8 bytes */ 2305 build_append_int_noprefix(table_data, dev_id_a << 8 | 0x43, 4); 2306 build_append_int_noprefix(table_data, dev_id_b << 8 | 0x0, 4); 2307 2308 /* "End of Range" IVHD entry, type 0x4 */ 2309 entry = PCI_BUILD_BDF(sub, PCI_DEVFN(31, 7)) << 8 | 0x4; 2310 build_append_int_noprefix(table_data, entry, 4); 2311 } 2312 } 2313 } 2314 2315 /* For all PCI host bridges, walk and insert IVHD entries */ 2316 static int 2317 ivrs_host_bridges(Object *obj, void *opaque) 2318 { 2319 GArray *ivhd_blob = opaque; 2320 2321 if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) { 2322 PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus; 2323 2324 if (bus && !pci_bus_bypass_iommu(bus)) { 2325 pci_for_each_device_under_bus(bus, insert_ivhd, ivhd_blob); 2326 } 2327 } 2328 2329 return 0; 2330 } 2331 2332 static void 2333 build_amd_iommu(GArray *table_data, BIOSLinker *linker, const char *oem_id, 2334 const char *oem_table_id) 2335 { 2336 AMDVIState *s = AMD_IOMMU_DEVICE(x86_iommu_get_default()); 2337 GArray *ivhd_blob = g_array_new(false, true, 1); 2338 AcpiTable table = { .sig = "IVRS", .rev = 1, .oem_id = oem_id, 2339 .oem_table_id = oem_table_id }; 2340 uint64_t feature_report; 2341 2342 acpi_table_begin(&table, table_data); 2343 /* IVinfo - IO virtualization information common to all 2344 * IOMMU units in a system 2345 */ 2346 build_append_int_noprefix(table_data, 2347 (1UL << 0) | /* EFRSup */ 2348 (40UL << 8), /* PASize */ 2349 4); 2350 /* reserved */ 2351 build_append_int_noprefix(table_data, 0, 8); 2352 2353 /* 2354 * A PCI bus walk, for each PCI host bridge, is necessary to create a 2355 * complete set of IVHD entries. Do this into a separate blob so that we 2356 * can calculate the total IVRS table length here and then append the new 2357 * blob further below. Fall back to an entry covering all devices, which 2358 * is sufficient when no aliases are present. 2359 */ 2360 object_child_foreach_recursive(object_get_root(), 2361 ivrs_host_bridges, ivhd_blob); 2362 2363 if (!ivhd_blob->len) { 2364 /* 2365 * Type 1 device entry reporting all devices 2366 * These are 4-byte device entries currently reporting the range of 2367 * Refer to Spec - Table 95:IVHD Device Entry Type Codes(4-byte) 2368 */ 2369 build_append_int_noprefix(ivhd_blob, 0x0000001, 4); 2370 } 2371 2372 /* 2373 * When interrupt remapping is supported, we add a special IVHD device 2374 * for type IO-APIC 2375 * Refer to spec - Table 95: IVHD device entry type codes 2376 * 2377 * Linux IOMMU driver checks for the special IVHD device (type IO-APIC). 2378 * See Linux kernel commit 'c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059' 2379 */ 2380 if (x86_iommu_ir_supported(x86_iommu_get_default())) { 2381 build_append_int_noprefix(ivhd_blob, 2382 (0x1ull << 56) | /* type IOAPIC */ 2383 (IOAPIC_SB_DEVID << 40) | /* IOAPIC devid */ 2384 0x48, /* special device */ 2385 8); 2386 } 2387 2388 /* IVHD definition - type 10h */ 2389 build_append_int_noprefix(table_data, 0x10, 1); 2390 /* virtualization flags */ 2391 build_append_int_noprefix(table_data, 2392 (1UL << 0) | /* HtTunEn */ 2393 (1UL << 4) | /* iotblSup */ 2394 (1UL << 6) | /* PrefSup */ 2395 (1UL << 7), /* PPRSup */ 2396 1); 2397 2398 /* IVHD length */ 2399 build_append_int_noprefix(table_data, ivhd_blob->len + 24, 2); 2400 /* DeviceID */ 2401 build_append_int_noprefix(table_data, 2402 object_property_get_int(OBJECT(&s->pci), "addr", 2403 &error_abort), 2); 2404 /* Capability offset */ 2405 build_append_int_noprefix(table_data, s->pci.capab_offset, 2); 2406 /* IOMMU base address */ 2407 build_append_int_noprefix(table_data, s->mmio.addr, 8); 2408 /* PCI Segment Group */ 2409 build_append_int_noprefix(table_data, 0, 2); 2410 /* IOMMU info */ 2411 build_append_int_noprefix(table_data, 0, 2); 2412 /* IOMMU Feature Reporting */ 2413 feature_report = (48UL << 30) | /* HATS */ 2414 (48UL << 28) | /* GATS */ 2415 (1UL << 2) | /* GTSup */ 2416 (1UL << 6); /* GASup */ 2417 if (s->xtsup) { 2418 feature_report |= (1UL << 0); /* XTSup */ 2419 } 2420 build_append_int_noprefix(table_data, feature_report, 4); 2421 2422 /* IVHD entries as found above */ 2423 g_array_append_vals(table_data, ivhd_blob->data, ivhd_blob->len); 2424 2425 /* IVHD definition - type 11h */ 2426 build_append_int_noprefix(table_data, 0x11, 1); 2427 /* virtualization flags */ 2428 build_append_int_noprefix(table_data, 2429 (1UL << 0) | /* HtTunEn */ 2430 (1UL << 4), /* iotblSup */ 2431 1); 2432 2433 /* IVHD length */ 2434 build_append_int_noprefix(table_data, ivhd_blob->len + 40, 2); 2435 /* DeviceID */ 2436 build_append_int_noprefix(table_data, 2437 object_property_get_int(OBJECT(&s->pci), "addr", 2438 &error_abort), 2); 2439 /* Capability offset */ 2440 build_append_int_noprefix(table_data, s->pci.capab_offset, 2); 2441 /* IOMMU base address */ 2442 build_append_int_noprefix(table_data, s->mmio.addr, 8); 2443 /* PCI Segment Group */ 2444 build_append_int_noprefix(table_data, 0, 2); 2445 /* IOMMU info */ 2446 build_append_int_noprefix(table_data, 0, 2); 2447 /* IOMMU Attributes */ 2448 build_append_int_noprefix(table_data, 0, 4); 2449 /* EFR Register Image */ 2450 build_append_int_noprefix(table_data, 2451 amdvi_extended_feature_register(s), 2452 8); 2453 /* EFR Register Image 2 */ 2454 build_append_int_noprefix(table_data, 0, 8); 2455 2456 /* IVHD entries as found above */ 2457 g_array_append_vals(table_data, ivhd_blob->data, ivhd_blob->len); 2458 2459 g_array_free(ivhd_blob, TRUE); 2460 acpi_table_end(linker, &table); 2461 } 2462 2463 typedef 2464 struct AcpiBuildState { 2465 /* Copy of table in RAM (for patching). */ 2466 MemoryRegion *table_mr; 2467 /* Is table patched? */ 2468 uint8_t patched; 2469 void *rsdp; 2470 MemoryRegion *rsdp_mr; 2471 MemoryRegion *linker_mr; 2472 } AcpiBuildState; 2473 2474 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg) 2475 { 2476 Object *pci_host; 2477 QObject *o; 2478 2479 pci_host = acpi_get_i386_pci_host(); 2480 if (!pci_host) { 2481 return false; 2482 } 2483 2484 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL); 2485 if (!o) { 2486 return false; 2487 } 2488 mcfg->base = qnum_get_uint(qobject_to(QNum, o)); 2489 qobject_unref(o); 2490 if (mcfg->base == PCIE_BASE_ADDR_UNMAPPED) { 2491 return false; 2492 } 2493 2494 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL); 2495 assert(o); 2496 mcfg->size = qnum_get_uint(qobject_to(QNum, o)); 2497 qobject_unref(o); 2498 return true; 2499 } 2500 2501 static 2502 void acpi_build(AcpiBuildTables *tables, MachineState *machine) 2503 { 2504 PCMachineState *pcms = PC_MACHINE(machine); 2505 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); 2506 X86MachineState *x86ms = X86_MACHINE(machine); 2507 DeviceState *iommu = pcms->iommu; 2508 GArray *table_offsets; 2509 unsigned facs, dsdt, rsdt, fadt; 2510 AcpiPmInfo pm; 2511 AcpiMiscInfo misc; 2512 AcpiMcfgInfo mcfg; 2513 Range pci_hole = {}, pci_hole64 = {}; 2514 uint8_t *u; 2515 size_t aml_len = 0; 2516 GArray *tables_blob = tables->table_data; 2517 AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL }; 2518 Object *vmgenid_dev; 2519 char *oem_id; 2520 char *oem_table_id; 2521 2522 acpi_get_pm_info(machine, &pm); 2523 acpi_get_misc_info(&misc); 2524 acpi_get_pci_holes(&pci_hole, &pci_hole64); 2525 acpi_get_slic_oem(&slic_oem); 2526 2527 if (slic_oem.id) { 2528 oem_id = slic_oem.id; 2529 } else { 2530 oem_id = x86ms->oem_id; 2531 } 2532 2533 if (slic_oem.table_id) { 2534 oem_table_id = slic_oem.table_id; 2535 } else { 2536 oem_table_id = x86ms->oem_table_id; 2537 } 2538 2539 table_offsets = g_array_new(false, true /* clear */, 2540 sizeof(uint32_t)); 2541 ACPI_BUILD_DPRINTF("init ACPI tables\n"); 2542 2543 bios_linker_loader_alloc(tables->linker, 2544 ACPI_BUILD_TABLE_FILE, tables_blob, 2545 64 /* Ensure FACS is aligned */, 2546 false /* high memory */); 2547 2548 /* 2549 * FACS is pointed to by FADT. 2550 * We place it first since it's the only table that has alignment 2551 * requirements. 2552 */ 2553 facs = tables_blob->len; 2554 build_facs(tables_blob); 2555 2556 /* DSDT is pointed to by FADT */ 2557 dsdt = tables_blob->len; 2558 build_dsdt(tables_blob, tables->linker, &pm, &misc, 2559 &pci_hole, &pci_hole64, machine); 2560 2561 /* Count the size of the DSDT and SSDT, we will need it for legacy 2562 * sizing of ACPI tables. 2563 */ 2564 aml_len += tables_blob->len - dsdt; 2565 2566 /* ACPI tables pointed to by RSDT */ 2567 fadt = tables_blob->len; 2568 acpi_add_table(table_offsets, tables_blob); 2569 pm.fadt.facs_tbl_offset = &facs; 2570 pm.fadt.dsdt_tbl_offset = &dsdt; 2571 pm.fadt.xdsdt_tbl_offset = &dsdt; 2572 build_fadt(tables_blob, tables->linker, &pm.fadt, oem_id, oem_table_id); 2573 aml_len += tables_blob->len - fadt; 2574 2575 acpi_add_table(table_offsets, tables_blob); 2576 acpi_build_madt(tables_blob, tables->linker, x86ms, 2577 x86ms->oem_id, x86ms->oem_table_id); 2578 2579 #ifdef CONFIG_ACPI_ERST 2580 { 2581 Object *erst_dev; 2582 erst_dev = find_erst_dev(); 2583 if (erst_dev) { 2584 acpi_add_table(table_offsets, tables_blob); 2585 build_erst(tables_blob, tables->linker, erst_dev, 2586 x86ms->oem_id, x86ms->oem_table_id); 2587 } 2588 } 2589 #endif 2590 2591 vmgenid_dev = find_vmgenid_dev(); 2592 if (vmgenid_dev) { 2593 acpi_add_table(table_offsets, tables_blob); 2594 vmgenid_build_acpi(VMGENID(vmgenid_dev), tables_blob, 2595 tables->vmgenid, tables->linker, x86ms->oem_id); 2596 } 2597 2598 if (misc.has_hpet) { 2599 acpi_add_table(table_offsets, tables_blob); 2600 build_hpet(tables_blob, tables->linker, x86ms->oem_id, 2601 x86ms->oem_table_id); 2602 } 2603 #ifdef CONFIG_TPM 2604 if (misc.tpm_version != TPM_VERSION_UNSPEC) { 2605 if (misc.tpm_version == TPM_VERSION_1_2) { 2606 acpi_add_table(table_offsets, tables_blob); 2607 build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog, 2608 x86ms->oem_id, x86ms->oem_table_id); 2609 } else { /* TPM_VERSION_2_0 */ 2610 acpi_add_table(table_offsets, tables_blob); 2611 build_tpm2(tables_blob, tables->linker, tables->tcpalog, 2612 x86ms->oem_id, x86ms->oem_table_id); 2613 } 2614 } 2615 #endif 2616 if (machine->numa_state->num_nodes) { 2617 acpi_add_table(table_offsets, tables_blob); 2618 build_srat(tables_blob, tables->linker, machine); 2619 if (machine->numa_state->have_numa_distance) { 2620 acpi_add_table(table_offsets, tables_blob); 2621 build_slit(tables_blob, tables->linker, machine, x86ms->oem_id, 2622 x86ms->oem_table_id); 2623 } 2624 if (machine->numa_state->hmat_enabled) { 2625 acpi_add_table(table_offsets, tables_blob); 2626 build_hmat(tables_blob, tables->linker, machine->numa_state, 2627 x86ms->oem_id, x86ms->oem_table_id); 2628 } 2629 } 2630 if (acpi_get_mcfg(&mcfg)) { 2631 acpi_add_table(table_offsets, tables_blob); 2632 build_mcfg(tables_blob, tables->linker, &mcfg, x86ms->oem_id, 2633 x86ms->oem_table_id); 2634 } 2635 if (object_dynamic_cast(OBJECT(iommu), TYPE_AMD_IOMMU_DEVICE)) { 2636 acpi_add_table(table_offsets, tables_blob); 2637 build_amd_iommu(tables_blob, tables->linker, x86ms->oem_id, 2638 x86ms->oem_table_id); 2639 } else if (object_dynamic_cast(OBJECT(iommu), TYPE_INTEL_IOMMU_DEVICE)) { 2640 acpi_add_table(table_offsets, tables_blob); 2641 build_dmar_q35(tables_blob, tables->linker, x86ms->oem_id, 2642 x86ms->oem_table_id); 2643 } else if (object_dynamic_cast(OBJECT(iommu), TYPE_VIRTIO_IOMMU_PCI)) { 2644 PCIDevice *pdev = PCI_DEVICE(iommu); 2645 2646 acpi_add_table(table_offsets, tables_blob); 2647 build_viot(machine, tables_blob, tables->linker, pci_get_bdf(pdev), 2648 x86ms->oem_id, x86ms->oem_table_id); 2649 } 2650 if (machine->nvdimms_state->is_enabled) { 2651 nvdimm_build_acpi(table_offsets, tables_blob, tables->linker, 2652 machine->nvdimms_state, machine->ram_slots, 2653 x86ms->oem_id, x86ms->oem_table_id); 2654 } 2655 if (pcms->cxl_devices_state.is_enabled) { 2656 cxl_build_cedt(table_offsets, tables_blob, tables->linker, 2657 x86ms->oem_id, x86ms->oem_table_id, &pcms->cxl_devices_state); 2658 } 2659 2660 acpi_add_table(table_offsets, tables_blob); 2661 build_waet(tables_blob, tables->linker, x86ms->oem_id, x86ms->oem_table_id); 2662 2663 /* Add tables supplied by user (if any) */ 2664 for (u = acpi_table_first(); u; u = acpi_table_next(u)) { 2665 unsigned len = acpi_table_len(u); 2666 2667 acpi_add_table(table_offsets, tables_blob); 2668 g_array_append_vals(tables_blob, u, len); 2669 } 2670 2671 /* RSDT is pointed to by RSDP */ 2672 rsdt = tables_blob->len; 2673 build_rsdt(tables_blob, tables->linker, table_offsets, 2674 oem_id, oem_table_id); 2675 2676 /* RSDP is in FSEG memory, so allocate it separately */ 2677 { 2678 AcpiRsdpData rsdp_data = { 2679 .revision = 0, 2680 .oem_id = x86ms->oem_id, 2681 .xsdt_tbl_offset = NULL, 2682 .rsdt_tbl_offset = &rsdt, 2683 }; 2684 build_rsdp(tables->rsdp, tables->linker, &rsdp_data); 2685 if (!pcmc->rsdp_in_ram) { 2686 /* We used to allocate some extra space for RSDP revision 2 but 2687 * only used the RSDP revision 0 space. The extra bytes were 2688 * zeroed out and not used. 2689 * Here we continue wasting those extra 16 bytes to make sure we 2690 * don't break migration for machine types 2.2 and older due to 2691 * RSDP blob size mismatch. 2692 */ 2693 build_append_int_noprefix(tables->rsdp, 0, 16); 2694 } 2695 } 2696 2697 /* We'll expose it all to Guest so we want to reduce 2698 * chance of size changes. 2699 * 2700 * We used to align the tables to 4k, but of course this would 2701 * too simple to be enough. 4k turned out to be too small an 2702 * alignment very soon, and in fact it is almost impossible to 2703 * keep the table size stable for all (max_cpus, max_memory_slots) 2704 * combinations. So the table size is always 64k for pc-i440fx-2.1 2705 * and we give an error if the table grows beyond that limit. 2706 * 2707 * We still have the problem of migrating from "-M pc-i440fx-2.0". For 2708 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables 2709 * than 2.0 and we can always pad the smaller tables with zeros. We can 2710 * then use the exact size of the 2.0 tables. 2711 * 2712 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration. 2713 */ 2714 if (pcmc->legacy_acpi_table_size) { 2715 /* Subtracting aml_len gives the size of fixed tables. Then add the 2716 * size of the PIIX4 DSDT/SSDT in QEMU 2.0. 2717 */ 2718 int legacy_aml_len = 2719 pcmc->legacy_acpi_table_size + 2720 ACPI_BUILD_LEGACY_CPU_AML_SIZE * x86ms->apic_id_limit; 2721 int legacy_table_size = 2722 ROUND_UP(tables_blob->len - aml_len + legacy_aml_len, 2723 ACPI_BUILD_ALIGN_SIZE); 2724 if ((tables_blob->len > legacy_table_size) && 2725 !pcmc->resizable_acpi_blob) { 2726 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */ 2727 warn_report("ACPI table size %u exceeds %d bytes," 2728 " migration may not work", 2729 tables_blob->len, legacy_table_size); 2730 error_printf("Try removing CPUs, NUMA nodes, memory slots" 2731 " or PCI bridges.\n"); 2732 } 2733 g_array_set_size(tables_blob, legacy_table_size); 2734 } else { 2735 /* Make sure we have a buffer in case we need to resize the tables. */ 2736 if ((tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) && 2737 !pcmc->resizable_acpi_blob) { 2738 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */ 2739 warn_report("ACPI table size %u exceeds %d bytes," 2740 " migration may not work", 2741 tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2); 2742 error_printf("Try removing CPUs, NUMA nodes, memory slots" 2743 " or PCI bridges.\n"); 2744 } 2745 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); 2746 } 2747 2748 acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE); 2749 2750 /* Cleanup memory that's no longer used. */ 2751 g_array_free(table_offsets, true); 2752 g_free(slic_oem.id); 2753 g_free(slic_oem.table_id); 2754 } 2755 2756 static void acpi_ram_update(MemoryRegion *mr, GArray *data) 2757 { 2758 uint32_t size = acpi_data_len(data); 2759 2760 /* Make sure RAM size is correct - in case it got changed e.g. by migration */ 2761 memory_region_ram_resize(mr, size, &error_abort); 2762 2763 memcpy(memory_region_get_ram_ptr(mr), data->data, size); 2764 memory_region_set_dirty(mr, 0, size); 2765 } 2766 2767 static void acpi_build_update(void *build_opaque) 2768 { 2769 AcpiBuildState *build_state = build_opaque; 2770 AcpiBuildTables tables; 2771 2772 /* No state to update or already patched? Nothing to do. */ 2773 if (!build_state || build_state->patched) { 2774 return; 2775 } 2776 build_state->patched = 1; 2777 2778 acpi_build_tables_init(&tables); 2779 2780 acpi_build(&tables, MACHINE(qdev_get_machine())); 2781 2782 acpi_ram_update(build_state->table_mr, tables.table_data); 2783 2784 if (build_state->rsdp) { 2785 memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp)); 2786 } else { 2787 acpi_ram_update(build_state->rsdp_mr, tables.rsdp); 2788 } 2789 2790 acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); 2791 acpi_build_tables_cleanup(&tables, true); 2792 } 2793 2794 static void acpi_build_reset(void *build_opaque) 2795 { 2796 AcpiBuildState *build_state = build_opaque; 2797 build_state->patched = 0; 2798 } 2799 2800 static const VMStateDescription vmstate_acpi_build = { 2801 .name = "acpi_build", 2802 .version_id = 1, 2803 .minimum_version_id = 1, 2804 .fields = (const VMStateField[]) { 2805 VMSTATE_UINT8(patched, AcpiBuildState), 2806 VMSTATE_END_OF_LIST() 2807 }, 2808 }; 2809 2810 void acpi_setup(void) 2811 { 2812 PCMachineState *pcms = PC_MACHINE(qdev_get_machine()); 2813 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); 2814 X86MachineState *x86ms = X86_MACHINE(pcms); 2815 AcpiBuildTables tables; 2816 AcpiBuildState *build_state; 2817 Object *vmgenid_dev; 2818 #ifdef CONFIG_TPM 2819 TPMIf *tpm; 2820 static FwCfgTPMConfig tpm_config; 2821 #endif 2822 2823 if (!x86ms->fw_cfg) { 2824 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n"); 2825 return; 2826 } 2827 2828 if (!pcms->acpi_build_enabled) { 2829 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n"); 2830 return; 2831 } 2832 2833 if (!x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) { 2834 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n"); 2835 return; 2836 } 2837 2838 build_state = g_malloc0(sizeof *build_state); 2839 2840 acpi_build_tables_init(&tables); 2841 acpi_build(&tables, MACHINE(pcms)); 2842 2843 /* Now expose it all to Guest */ 2844 build_state->table_mr = acpi_add_rom_blob(acpi_build_update, 2845 build_state, tables.table_data, 2846 ACPI_BUILD_TABLE_FILE); 2847 assert(build_state->table_mr != NULL); 2848 2849 build_state->linker_mr = 2850 acpi_add_rom_blob(acpi_build_update, build_state, 2851 tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE); 2852 2853 #ifdef CONFIG_TPM 2854 fw_cfg_add_file(x86ms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, 2855 tables.tcpalog->data, acpi_data_len(tables.tcpalog)); 2856 2857 tpm = tpm_find(); 2858 if (tpm && object_property_get_bool(OBJECT(tpm), "ppi", &error_abort)) { 2859 tpm_config = (FwCfgTPMConfig) { 2860 .tpmppi_address = cpu_to_le32(TPM_PPI_ADDR_BASE), 2861 .tpm_version = tpm_get_version(tpm), 2862 .tpmppi_version = TPM_PPI_VERSION_1_30 2863 }; 2864 fw_cfg_add_file(x86ms->fw_cfg, "etc/tpm/config", 2865 &tpm_config, sizeof tpm_config); 2866 } 2867 #endif 2868 2869 vmgenid_dev = find_vmgenid_dev(); 2870 if (vmgenid_dev) { 2871 vmgenid_add_fw_cfg(VMGENID(vmgenid_dev), x86ms->fw_cfg, 2872 tables.vmgenid); 2873 } 2874 2875 if (!pcmc->rsdp_in_ram) { 2876 /* 2877 * Keep for compatibility with old machine types. 2878 * Though RSDP is small, its contents isn't immutable, so 2879 * we'll update it along with the rest of tables on guest access. 2880 */ 2881 uint32_t rsdp_size = acpi_data_len(tables.rsdp); 2882 2883 build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size); 2884 fw_cfg_add_file_callback(x86ms->fw_cfg, ACPI_BUILD_RSDP_FILE, 2885 acpi_build_update, NULL, build_state, 2886 build_state->rsdp, rsdp_size, true); 2887 build_state->rsdp_mr = NULL; 2888 } else { 2889 build_state->rsdp = NULL; 2890 build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update, 2891 build_state, tables.rsdp, 2892 ACPI_BUILD_RSDP_FILE); 2893 } 2894 2895 qemu_register_reset(acpi_build_reset, build_state); 2896 acpi_build_reset(build_state); 2897 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state); 2898 2899 /* Cleanup tables but don't free the memory: we track it 2900 * in build_state. 2901 */ 2902 acpi_build_tables_cleanup(&tables, false); 2903 } 2904