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 "qemu-common.h" 28 #include "qemu/bitmap.h" 29 #include "qemu/error-report.h" 30 #include "hw/pci/pci.h" 31 #include "qom/cpu.h" 32 #include "target/i386/cpu.h" 33 #include "hw/misc/pvpanic.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/acpi/piix4.h" 39 #include "hw/nvram/fw_cfg.h" 40 #include "hw/acpi/bios-linker-loader.h" 41 #include "hw/loader.h" 42 #include "hw/isa/isa.h" 43 #include "hw/block/fdc.h" 44 #include "hw/acpi/memory_hotplug.h" 45 #include "sysemu/tpm.h" 46 #include "hw/acpi/tpm.h" 47 #include "hw/acpi/vmgenid.h" 48 #include "sysemu/tpm_backend.h" 49 #include "hw/timer/mc146818rtc_regs.h" 50 #include "hw/mem/memory-device.h" 51 #include "sysemu/numa.h" 52 53 /* Supported chipsets: */ 54 #include "hw/acpi/piix4.h" 55 #include "hw/acpi/pcihp.h" 56 #include "hw/i386/ich9.h" 57 #include "hw/pci/pci_bus.h" 58 #include "hw/pci-host/q35.h" 59 #include "hw/i386/x86-iommu.h" 60 61 #include "hw/acpi/aml-build.h" 62 63 #include "qom/qom-qobject.h" 64 #include "hw/i386/amd_iommu.h" 65 #include "hw/i386/intel_iommu.h" 66 67 #include "hw/acpi/ipmi.h" 68 69 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and 70 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows 71 * a little bit, there should be plenty of free space since the DSDT 72 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1. 73 */ 74 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97 75 #define ACPI_BUILD_ALIGN_SIZE 0x1000 76 77 #define ACPI_BUILD_TABLE_SIZE 0x20000 78 79 /* #define DEBUG_ACPI_BUILD */ 80 #ifdef DEBUG_ACPI_BUILD 81 #define ACPI_BUILD_DPRINTF(fmt, ...) \ 82 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0) 83 #else 84 #define ACPI_BUILD_DPRINTF(fmt, ...) 85 #endif 86 87 /* Default IOAPIC ID */ 88 #define ACPI_BUILD_IOAPIC_ID 0x0 89 90 typedef struct AcpiMcfgInfo { 91 uint64_t mcfg_base; 92 uint32_t mcfg_size; 93 } AcpiMcfgInfo; 94 95 typedef struct AcpiPmInfo { 96 bool s3_disabled; 97 bool s4_disabled; 98 bool pcihp_bridge_en; 99 uint8_t s4_val; 100 AcpiFadtData fadt; 101 uint16_t cpu_hp_io_base; 102 uint16_t pcihp_io_base; 103 uint16_t pcihp_io_len; 104 } AcpiPmInfo; 105 106 typedef struct AcpiMiscInfo { 107 bool is_piix4; 108 bool has_hpet; 109 TPMVersion tpm_version; 110 const unsigned char *dsdt_code; 111 unsigned dsdt_size; 112 uint16_t pvpanic_port; 113 uint16_t applesmc_io_base; 114 } AcpiMiscInfo; 115 116 typedef struct AcpiBuildPciBusHotplugState { 117 GArray *device_table; 118 GArray *notify_table; 119 struct AcpiBuildPciBusHotplugState *parent; 120 bool pcihp_bridge_en; 121 } AcpiBuildPciBusHotplugState; 122 123 typedef struct FwCfgTPMConfig { 124 uint32_t tpmppi_address; 125 uint8_t tpm_version; 126 uint8_t tpmppi_version; 127 } QEMU_PACKED FwCfgTPMConfig; 128 129 static void init_common_fadt_data(Object *o, AcpiFadtData *data) 130 { 131 uint32_t io = object_property_get_uint(o, ACPI_PM_PROP_PM_IO_BASE, NULL); 132 AmlAddressSpace as = AML_AS_SYSTEM_IO; 133 AcpiFadtData fadt = { 134 .rev = 3, 135 .flags = 136 (1 << ACPI_FADT_F_WBINVD) | 137 (1 << ACPI_FADT_F_PROC_C1) | 138 (1 << ACPI_FADT_F_SLP_BUTTON) | 139 (1 << ACPI_FADT_F_RTC_S4) | 140 (1 << ACPI_FADT_F_USE_PLATFORM_CLOCK) | 141 /* APIC destination mode ("Flat Logical") has an upper limit of 8 142 * CPUs for more than 8 CPUs, "Clustered Logical" mode has to be 143 * used 144 */ 145 ((max_cpus > 8) ? (1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL) : 0), 146 .int_model = 1 /* Multiple APIC */, 147 .rtc_century = RTC_CENTURY, 148 .plvl2_lat = 0xfff /* C2 state not supported */, 149 .plvl3_lat = 0xfff /* C3 state not supported */, 150 .smi_cmd = ACPI_PORT_SMI_CMD, 151 .sci_int = object_property_get_uint(o, ACPI_PM_PROP_SCI_INT, NULL), 152 .acpi_enable_cmd = 153 object_property_get_uint(o, ACPI_PM_PROP_ACPI_ENABLE_CMD, NULL), 154 .acpi_disable_cmd = 155 object_property_get_uint(o, ACPI_PM_PROP_ACPI_DISABLE_CMD, NULL), 156 .pm1a_evt = { .space_id = as, .bit_width = 4 * 8, .address = io }, 157 .pm1a_cnt = { .space_id = as, .bit_width = 2 * 8, 158 .address = io + 0x04 }, 159 .pm_tmr = { .space_id = as, .bit_width = 4 * 8, .address = io + 0x08 }, 160 .gpe0_blk = { .space_id = as, .bit_width = 161 object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK_LEN, NULL) * 8, 162 .address = object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK, NULL) 163 }, 164 }; 165 *data = fadt; 166 } 167 168 static Object *object_resolve_type_unambiguous(const char *typename) 169 { 170 bool ambig; 171 Object *o = object_resolve_path_type("", typename, &ambig); 172 173 if (ambig || !o) { 174 return NULL; 175 } 176 return o; 177 } 178 179 static void acpi_get_pm_info(AcpiPmInfo *pm) 180 { 181 Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM); 182 Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE); 183 Object *obj = piix ? piix : lpc; 184 QObject *o; 185 pm->cpu_hp_io_base = 0; 186 pm->pcihp_io_base = 0; 187 pm->pcihp_io_len = 0; 188 189 assert(obj); 190 init_common_fadt_data(obj, &pm->fadt); 191 if (piix) { 192 /* w2k requires FADT(rev1) or it won't boot, keep PC compatible */ 193 pm->fadt.rev = 1; 194 pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE; 195 pm->pcihp_io_base = 196 object_property_get_uint(obj, ACPI_PCIHP_IO_BASE_PROP, NULL); 197 pm->pcihp_io_len = 198 object_property_get_uint(obj, ACPI_PCIHP_IO_LEN_PROP, NULL); 199 } 200 if (lpc) { 201 struct AcpiGenericAddress r = { .space_id = AML_AS_SYSTEM_IO, 202 .bit_width = 8, .address = ICH9_RST_CNT_IOPORT }; 203 pm->fadt.reset_reg = r; 204 pm->fadt.reset_val = 0xf; 205 pm->fadt.flags |= 1 << ACPI_FADT_F_RESET_REG_SUP; 206 pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE; 207 } 208 209 /* The above need not be conditional on machine type because the reset port 210 * happens to be the same on PIIX (pc) and ICH9 (q35). */ 211 QEMU_BUILD_BUG_ON(ICH9_RST_CNT_IOPORT != RCR_IOPORT); 212 213 /* Fill in optional s3/s4 related properties */ 214 o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL); 215 if (o) { 216 pm->s3_disabled = qnum_get_uint(qobject_to(QNum, o)); 217 } else { 218 pm->s3_disabled = false; 219 } 220 qobject_unref(o); 221 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL); 222 if (o) { 223 pm->s4_disabled = qnum_get_uint(qobject_to(QNum, o)); 224 } else { 225 pm->s4_disabled = false; 226 } 227 qobject_unref(o); 228 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL); 229 if (o) { 230 pm->s4_val = qnum_get_uint(qobject_to(QNum, o)); 231 } else { 232 pm->s4_val = false; 233 } 234 qobject_unref(o); 235 236 pm->pcihp_bridge_en = 237 object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support", 238 NULL); 239 } 240 241 static void acpi_get_misc_info(AcpiMiscInfo *info) 242 { 243 Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM); 244 Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE); 245 assert(!!piix != !!lpc); 246 247 if (piix) { 248 info->is_piix4 = true; 249 } 250 if (lpc) { 251 info->is_piix4 = false; 252 } 253 254 info->has_hpet = hpet_find(); 255 info->tpm_version = tpm_get_version(tpm_find()); 256 info->pvpanic_port = pvpanic_port(); 257 info->applesmc_io_base = applesmc_port(); 258 } 259 260 /* 261 * Because of the PXB hosts we cannot simply query TYPE_PCI_HOST_BRIDGE. 262 * On i386 arch we only have two pci hosts, so we can look only for them. 263 */ 264 static Object *acpi_get_i386_pci_host(void) 265 { 266 PCIHostState *host; 267 268 host = OBJECT_CHECK(PCIHostState, 269 object_resolve_path("/machine/i440fx", NULL), 270 TYPE_PCI_HOST_BRIDGE); 271 if (!host) { 272 host = OBJECT_CHECK(PCIHostState, 273 object_resolve_path("/machine/q35", NULL), 274 TYPE_PCI_HOST_BRIDGE); 275 } 276 277 return OBJECT(host); 278 } 279 280 static void acpi_get_pci_holes(Range *hole, Range *hole64) 281 { 282 Object *pci_host; 283 284 pci_host = acpi_get_i386_pci_host(); 285 g_assert(pci_host); 286 287 range_set_bounds1(hole, 288 object_property_get_uint(pci_host, 289 PCI_HOST_PROP_PCI_HOLE_START, 290 NULL), 291 object_property_get_uint(pci_host, 292 PCI_HOST_PROP_PCI_HOLE_END, 293 NULL)); 294 range_set_bounds1(hole64, 295 object_property_get_uint(pci_host, 296 PCI_HOST_PROP_PCI_HOLE64_START, 297 NULL), 298 object_property_get_uint(pci_host, 299 PCI_HOST_PROP_PCI_HOLE64_END, 300 NULL)); 301 } 302 303 static void acpi_align_size(GArray *blob, unsigned align) 304 { 305 /* Align size to multiple of given size. This reduces the chance 306 * we need to change size in the future (breaking cross version migration). 307 */ 308 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); 309 } 310 311 /* FACS */ 312 static void 313 build_facs(GArray *table_data) 314 { 315 AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs); 316 memcpy(&facs->signature, "FACS", 4); 317 facs->length = cpu_to_le32(sizeof(*facs)); 318 } 319 320 void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid, 321 const CPUArchIdList *apic_ids, GArray *entry) 322 { 323 uint32_t apic_id = apic_ids->cpus[uid].arch_id; 324 325 /* ACPI spec says that LAPIC entry for non present 326 * CPU may be omitted from MADT or it must be marked 327 * as disabled. However omitting non present CPU from 328 * MADT breaks hotplug on linux. So possible CPUs 329 * should be put in MADT but kept disabled. 330 */ 331 if (apic_id < 255) { 332 AcpiMadtProcessorApic *apic = acpi_data_push(entry, sizeof *apic); 333 334 apic->type = ACPI_APIC_PROCESSOR; 335 apic->length = sizeof(*apic); 336 apic->processor_id = uid; 337 apic->local_apic_id = apic_id; 338 if (apic_ids->cpus[uid].cpu != NULL) { 339 apic->flags = cpu_to_le32(1); 340 } else { 341 apic->flags = cpu_to_le32(0); 342 } 343 } else { 344 AcpiMadtProcessorX2Apic *apic = acpi_data_push(entry, sizeof *apic); 345 346 apic->type = ACPI_APIC_LOCAL_X2APIC; 347 apic->length = sizeof(*apic); 348 apic->uid = cpu_to_le32(uid); 349 apic->x2apic_id = cpu_to_le32(apic_id); 350 if (apic_ids->cpus[uid].cpu != NULL) { 351 apic->flags = cpu_to_le32(1); 352 } else { 353 apic->flags = cpu_to_le32(0); 354 } 355 } 356 } 357 358 static void 359 build_madt(GArray *table_data, BIOSLinker *linker, PCMachineState *pcms) 360 { 361 MachineClass *mc = MACHINE_GET_CLASS(pcms); 362 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(pcms)); 363 int madt_start = table_data->len; 364 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(pcms->acpi_dev); 365 AcpiDeviceIf *adev = ACPI_DEVICE_IF(pcms->acpi_dev); 366 bool x2apic_mode = false; 367 368 AcpiMultipleApicTable *madt; 369 AcpiMadtIoApic *io_apic; 370 AcpiMadtIntsrcovr *intsrcovr; 371 int i; 372 373 madt = acpi_data_push(table_data, sizeof *madt); 374 madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS); 375 madt->flags = cpu_to_le32(1); 376 377 for (i = 0; i < apic_ids->len; i++) { 378 adevc->madt_cpu(adev, i, apic_ids, table_data); 379 if (apic_ids->cpus[i].arch_id > 254) { 380 x2apic_mode = true; 381 } 382 } 383 384 io_apic = acpi_data_push(table_data, sizeof *io_apic); 385 io_apic->type = ACPI_APIC_IO; 386 io_apic->length = sizeof(*io_apic); 387 io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID; 388 io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS); 389 io_apic->interrupt = cpu_to_le32(0); 390 391 if (pcms->apic_xrupt_override) { 392 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); 393 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; 394 intsrcovr->length = sizeof(*intsrcovr); 395 intsrcovr->source = 0; 396 intsrcovr->gsi = cpu_to_le32(2); 397 intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */ 398 } 399 for (i = 1; i < 16; i++) { 400 #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11)) 401 if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) { 402 /* No need for a INT source override structure. */ 403 continue; 404 } 405 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); 406 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; 407 intsrcovr->length = sizeof(*intsrcovr); 408 intsrcovr->source = i; 409 intsrcovr->gsi = cpu_to_le32(i); 410 intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */ 411 } 412 413 if (x2apic_mode) { 414 AcpiMadtLocalX2ApicNmi *local_nmi; 415 416 local_nmi = acpi_data_push(table_data, sizeof *local_nmi); 417 local_nmi->type = ACPI_APIC_LOCAL_X2APIC_NMI; 418 local_nmi->length = sizeof(*local_nmi); 419 local_nmi->uid = 0xFFFFFFFF; /* all processors */ 420 local_nmi->flags = cpu_to_le16(0); 421 local_nmi->lint = 1; /* ACPI_LINT1 */ 422 } else { 423 AcpiMadtLocalNmi *local_nmi; 424 425 local_nmi = acpi_data_push(table_data, sizeof *local_nmi); 426 local_nmi->type = ACPI_APIC_LOCAL_NMI; 427 local_nmi->length = sizeof(*local_nmi); 428 local_nmi->processor_id = 0xff; /* all processors */ 429 local_nmi->flags = cpu_to_le16(0); 430 local_nmi->lint = 1; /* ACPI_LINT1 */ 431 } 432 433 build_header(linker, table_data, 434 (void *)(table_data->data + madt_start), "APIC", 435 table_data->len - madt_start, 1, NULL, NULL); 436 } 437 438 static void build_append_pcihp_notify_entry(Aml *method, int slot) 439 { 440 Aml *if_ctx; 441 int32_t devfn = PCI_DEVFN(slot, 0); 442 443 if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot), NULL)); 444 aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1))); 445 aml_append(method, if_ctx); 446 } 447 448 static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, 449 bool pcihp_bridge_en) 450 { 451 Aml *dev, *notify_method = NULL, *method; 452 QObject *bsel; 453 PCIBus *sec; 454 int i; 455 456 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL); 457 if (bsel) { 458 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); 459 460 aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val))); 461 notify_method = aml_method("DVNT", 2, AML_NOTSERIALIZED); 462 } 463 464 for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) { 465 DeviceClass *dc; 466 PCIDeviceClass *pc; 467 PCIDevice *pdev = bus->devices[i]; 468 int slot = PCI_SLOT(i); 469 bool hotplug_enabled_dev; 470 bool bridge_in_acpi; 471 472 if (!pdev) { 473 if (bsel) { /* add hotplug slots for non present devices */ 474 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0)); 475 aml_append(dev, aml_name_decl("_SUN", aml_int(slot))); 476 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16))); 477 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 478 aml_append(method, 479 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN")) 480 ); 481 aml_append(dev, method); 482 aml_append(parent_scope, dev); 483 484 build_append_pcihp_notify_entry(notify_method, slot); 485 } 486 continue; 487 } 488 489 pc = PCI_DEVICE_GET_CLASS(pdev); 490 dc = DEVICE_GET_CLASS(pdev); 491 492 /* When hotplug for bridges is enabled, bridges are 493 * described in ACPI separately (see build_pci_bus_end). 494 * In this case they aren't themselves hot-pluggable. 495 * Hotplugged bridges *are* hot-pluggable. 496 */ 497 bridge_in_acpi = pc->is_bridge && pcihp_bridge_en && 498 !DEVICE(pdev)->hotplugged; 499 500 hotplug_enabled_dev = bsel && dc->hotpluggable && !bridge_in_acpi; 501 502 if (pc->class_id == PCI_CLASS_BRIDGE_ISA) { 503 continue; 504 } 505 506 /* start to compose PCI slot descriptor */ 507 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0)); 508 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16))); 509 510 if (pc->class_id == PCI_CLASS_DISPLAY_VGA) { 511 /* add VGA specific AML methods */ 512 int s3d; 513 514 if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) { 515 s3d = 3; 516 } else { 517 s3d = 0; 518 } 519 520 method = aml_method("_S1D", 0, AML_NOTSERIALIZED); 521 aml_append(method, aml_return(aml_int(0))); 522 aml_append(dev, method); 523 524 method = aml_method("_S2D", 0, AML_NOTSERIALIZED); 525 aml_append(method, aml_return(aml_int(0))); 526 aml_append(dev, method); 527 528 method = aml_method("_S3D", 0, AML_NOTSERIALIZED); 529 aml_append(method, aml_return(aml_int(s3d))); 530 aml_append(dev, method); 531 } else if (hotplug_enabled_dev) { 532 /* add _SUN/_EJ0 to make slot hotpluggable */ 533 aml_append(dev, aml_name_decl("_SUN", aml_int(slot))); 534 535 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 536 aml_append(method, 537 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN")) 538 ); 539 aml_append(dev, method); 540 541 if (bsel) { 542 build_append_pcihp_notify_entry(notify_method, slot); 543 } 544 } else if (bridge_in_acpi) { 545 /* 546 * device is coldplugged bridge, 547 * add child device descriptions into its scope 548 */ 549 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev)); 550 551 build_append_pci_bus_devices(dev, sec_bus, pcihp_bridge_en); 552 } 553 /* slot descriptor has been composed, add it into parent context */ 554 aml_append(parent_scope, dev); 555 } 556 557 if (bsel) { 558 aml_append(parent_scope, notify_method); 559 } 560 561 /* Append PCNT method to notify about events on local and child buses. 562 * Add unconditionally for root since DSDT expects it. 563 */ 564 method = aml_method("PCNT", 0, AML_NOTSERIALIZED); 565 566 /* If bus supports hotplug select it and notify about local events */ 567 if (bsel) { 568 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); 569 570 aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM"))); 571 aml_append(method, 572 aml_call2("DVNT", aml_name("PCIU"), aml_int(1) /* Device Check */) 573 ); 574 aml_append(method, 575 aml_call2("DVNT", aml_name("PCID"), aml_int(3)/* Eject Request */) 576 ); 577 } 578 579 /* Notify about child bus events in any case */ 580 if (pcihp_bridge_en) { 581 QLIST_FOREACH(sec, &bus->child, sibling) { 582 int32_t devfn = sec->parent_dev->devfn; 583 584 if (pci_bus_is_root(sec) || pci_bus_is_express(sec)) { 585 continue; 586 } 587 588 aml_append(method, aml_name("^S%.02X.PCNT", devfn)); 589 } 590 } 591 aml_append(parent_scope, method); 592 qobject_unref(bsel); 593 } 594 595 /** 596 * build_prt_entry: 597 * @link_name: link name for PCI route entry 598 * 599 * build AML package containing a PCI route entry for @link_name 600 */ 601 static Aml *build_prt_entry(const char *link_name) 602 { 603 Aml *a_zero = aml_int(0); 604 Aml *pkg = aml_package(4); 605 aml_append(pkg, a_zero); 606 aml_append(pkg, a_zero); 607 aml_append(pkg, aml_name("%s", link_name)); 608 aml_append(pkg, a_zero); 609 return pkg; 610 } 611 612 /* 613 * initialize_route - Initialize the interrupt routing rule 614 * through a specific LINK: 615 * if (lnk_idx == idx) 616 * route using link 'link_name' 617 */ 618 static Aml *initialize_route(Aml *route, const char *link_name, 619 Aml *lnk_idx, int idx) 620 { 621 Aml *if_ctx = aml_if(aml_equal(lnk_idx, aml_int(idx))); 622 Aml *pkg = build_prt_entry(link_name); 623 624 aml_append(if_ctx, aml_store(pkg, route)); 625 626 return if_ctx; 627 } 628 629 /* 630 * build_prt - Define interrupt rounting rules 631 * 632 * Returns an array of 128 routes, one for each device, 633 * based on device location. 634 * The main goal is to equaly distribute the interrupts 635 * over the 4 existing ACPI links (works only for i440fx). 636 * The hash function is (slot + pin) & 3 -> "LNK[D|A|B|C]". 637 * 638 */ 639 static Aml *build_prt(bool is_pci0_prt) 640 { 641 Aml *method, *while_ctx, *pin, *res; 642 643 method = aml_method("_PRT", 0, AML_NOTSERIALIZED); 644 res = aml_local(0); 645 pin = aml_local(1); 646 aml_append(method, aml_store(aml_package(128), res)); 647 aml_append(method, aml_store(aml_int(0), pin)); 648 649 /* while (pin < 128) */ 650 while_ctx = aml_while(aml_lless(pin, aml_int(128))); 651 { 652 Aml *slot = aml_local(2); 653 Aml *lnk_idx = aml_local(3); 654 Aml *route = aml_local(4); 655 656 /* slot = pin >> 2 */ 657 aml_append(while_ctx, 658 aml_store(aml_shiftright(pin, aml_int(2), NULL), slot)); 659 /* lnk_idx = (slot + pin) & 3 */ 660 aml_append(while_ctx, 661 aml_store(aml_and(aml_add(pin, slot, NULL), aml_int(3), NULL), 662 lnk_idx)); 663 664 /* route[2] = "LNK[D|A|B|C]", selection based on pin % 3 */ 665 aml_append(while_ctx, initialize_route(route, "LNKD", lnk_idx, 0)); 666 if (is_pci0_prt) { 667 Aml *if_device_1, *if_pin_4, *else_pin_4; 668 669 /* device 1 is the power-management device, needs SCI */ 670 if_device_1 = aml_if(aml_equal(lnk_idx, aml_int(1))); 671 { 672 if_pin_4 = aml_if(aml_equal(pin, aml_int(4))); 673 { 674 aml_append(if_pin_4, 675 aml_store(build_prt_entry("LNKS"), route)); 676 } 677 aml_append(if_device_1, if_pin_4); 678 else_pin_4 = aml_else(); 679 { 680 aml_append(else_pin_4, 681 aml_store(build_prt_entry("LNKA"), route)); 682 } 683 aml_append(if_device_1, else_pin_4); 684 } 685 aml_append(while_ctx, if_device_1); 686 } else { 687 aml_append(while_ctx, initialize_route(route, "LNKA", lnk_idx, 1)); 688 } 689 aml_append(while_ctx, initialize_route(route, "LNKB", lnk_idx, 2)); 690 aml_append(while_ctx, initialize_route(route, "LNKC", lnk_idx, 3)); 691 692 /* route[0] = 0x[slot]FFFF */ 693 aml_append(while_ctx, 694 aml_store(aml_or(aml_shiftleft(slot, aml_int(16)), aml_int(0xFFFF), 695 NULL), 696 aml_index(route, aml_int(0)))); 697 /* route[1] = pin & 3 */ 698 aml_append(while_ctx, 699 aml_store(aml_and(pin, aml_int(3), NULL), 700 aml_index(route, aml_int(1)))); 701 /* res[pin] = route */ 702 aml_append(while_ctx, aml_store(route, aml_index(res, pin))); 703 /* pin++ */ 704 aml_append(while_ctx, aml_increment(pin)); 705 } 706 aml_append(method, while_ctx); 707 /* return res*/ 708 aml_append(method, aml_return(res)); 709 710 return method; 711 } 712 713 typedef struct CrsRangeEntry { 714 uint64_t base; 715 uint64_t limit; 716 } CrsRangeEntry; 717 718 static void crs_range_insert(GPtrArray *ranges, uint64_t base, uint64_t limit) 719 { 720 CrsRangeEntry *entry; 721 722 entry = g_malloc(sizeof(*entry)); 723 entry->base = base; 724 entry->limit = limit; 725 726 g_ptr_array_add(ranges, entry); 727 } 728 729 static void crs_range_free(gpointer data) 730 { 731 CrsRangeEntry *entry = (CrsRangeEntry *)data; 732 g_free(entry); 733 } 734 735 typedef struct CrsRangeSet { 736 GPtrArray *io_ranges; 737 GPtrArray *mem_ranges; 738 GPtrArray *mem_64bit_ranges; 739 } CrsRangeSet; 740 741 static void crs_range_set_init(CrsRangeSet *range_set) 742 { 743 range_set->io_ranges = g_ptr_array_new_with_free_func(crs_range_free); 744 range_set->mem_ranges = g_ptr_array_new_with_free_func(crs_range_free); 745 range_set->mem_64bit_ranges = 746 g_ptr_array_new_with_free_func(crs_range_free); 747 } 748 749 static void crs_range_set_free(CrsRangeSet *range_set) 750 { 751 g_ptr_array_free(range_set->io_ranges, true); 752 g_ptr_array_free(range_set->mem_ranges, true); 753 g_ptr_array_free(range_set->mem_64bit_ranges, true); 754 } 755 756 static gint crs_range_compare(gconstpointer a, gconstpointer b) 757 { 758 CrsRangeEntry *entry_a = *(CrsRangeEntry **)a; 759 CrsRangeEntry *entry_b = *(CrsRangeEntry **)b; 760 761 return (int64_t)entry_a->base - (int64_t)entry_b->base; 762 } 763 764 /* 765 * crs_replace_with_free_ranges - given the 'used' ranges within [start - end] 766 * interval, computes the 'free' ranges from the same interval. 767 * Example: If the input array is { [a1 - a2],[b1 - b2] }, the function 768 * will return { [base - a1], [a2 - b1], [b2 - limit] }. 769 */ 770 static void crs_replace_with_free_ranges(GPtrArray *ranges, 771 uint64_t start, uint64_t end) 772 { 773 GPtrArray *free_ranges = g_ptr_array_new(); 774 uint64_t free_base = start; 775 int i; 776 777 g_ptr_array_sort(ranges, crs_range_compare); 778 for (i = 0; i < ranges->len; i++) { 779 CrsRangeEntry *used = g_ptr_array_index(ranges, i); 780 781 if (free_base < used->base) { 782 crs_range_insert(free_ranges, free_base, used->base - 1); 783 } 784 785 free_base = used->limit + 1; 786 } 787 788 if (free_base < end) { 789 crs_range_insert(free_ranges, free_base, end); 790 } 791 792 g_ptr_array_set_size(ranges, 0); 793 for (i = 0; i < free_ranges->len; i++) { 794 g_ptr_array_add(ranges, g_ptr_array_index(free_ranges, i)); 795 } 796 797 g_ptr_array_free(free_ranges, true); 798 } 799 800 /* 801 * crs_range_merge - merges adjacent ranges in the given array. 802 * Array elements are deleted and replaced with the merged ranges. 803 */ 804 static void crs_range_merge(GPtrArray *range) 805 { 806 GPtrArray *tmp = g_ptr_array_new_with_free_func(crs_range_free); 807 CrsRangeEntry *entry; 808 uint64_t range_base, range_limit; 809 int i; 810 811 if (!range->len) { 812 return; 813 } 814 815 g_ptr_array_sort(range, crs_range_compare); 816 817 entry = g_ptr_array_index(range, 0); 818 range_base = entry->base; 819 range_limit = entry->limit; 820 for (i = 1; i < range->len; i++) { 821 entry = g_ptr_array_index(range, i); 822 if (entry->base - 1 == range_limit) { 823 range_limit = entry->limit; 824 } else { 825 crs_range_insert(tmp, range_base, range_limit); 826 range_base = entry->base; 827 range_limit = entry->limit; 828 } 829 } 830 crs_range_insert(tmp, range_base, range_limit); 831 832 g_ptr_array_set_size(range, 0); 833 for (i = 0; i < tmp->len; i++) { 834 entry = g_ptr_array_index(tmp, i); 835 crs_range_insert(range, entry->base, entry->limit); 836 } 837 g_ptr_array_free(tmp, true); 838 } 839 840 static Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set) 841 { 842 Aml *crs = aml_resource_template(); 843 CrsRangeSet temp_range_set; 844 CrsRangeEntry *entry; 845 uint8_t max_bus = pci_bus_num(host->bus); 846 uint8_t type; 847 int devfn; 848 int i; 849 850 crs_range_set_init(&temp_range_set); 851 for (devfn = 0; devfn < ARRAY_SIZE(host->bus->devices); devfn++) { 852 uint64_t range_base, range_limit; 853 PCIDevice *dev = host->bus->devices[devfn]; 854 855 if (!dev) { 856 continue; 857 } 858 859 for (i = 0; i < PCI_NUM_REGIONS; i++) { 860 PCIIORegion *r = &dev->io_regions[i]; 861 862 range_base = r->addr; 863 range_limit = r->addr + r->size - 1; 864 865 /* 866 * Work-around for old bioses 867 * that do not support multiple root buses 868 */ 869 if (!range_base || range_base > range_limit) { 870 continue; 871 } 872 873 if (r->type & PCI_BASE_ADDRESS_SPACE_IO) { 874 crs_range_insert(temp_range_set.io_ranges, 875 range_base, range_limit); 876 } else { /* "memory" */ 877 crs_range_insert(temp_range_set.mem_ranges, 878 range_base, range_limit); 879 } 880 } 881 882 type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; 883 if (type == PCI_HEADER_TYPE_BRIDGE) { 884 uint8_t subordinate = dev->config[PCI_SUBORDINATE_BUS]; 885 if (subordinate > max_bus) { 886 max_bus = subordinate; 887 } 888 889 range_base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO); 890 range_limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO); 891 892 /* 893 * Work-around for old bioses 894 * that do not support multiple root buses 895 */ 896 if (range_base && range_base <= range_limit) { 897 crs_range_insert(temp_range_set.io_ranges, 898 range_base, range_limit); 899 } 900 901 range_base = 902 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); 903 range_limit = 904 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); 905 906 /* 907 * Work-around for old bioses 908 * that do not support multiple root buses 909 */ 910 if (range_base && range_base <= range_limit) { 911 uint64_t length = range_limit - range_base + 1; 912 if (range_limit <= UINT32_MAX && length <= UINT32_MAX) { 913 crs_range_insert(temp_range_set.mem_ranges, 914 range_base, range_limit); 915 } else { 916 crs_range_insert(temp_range_set.mem_64bit_ranges, 917 range_base, range_limit); 918 } 919 } 920 921 range_base = 922 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); 923 range_limit = 924 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); 925 926 /* 927 * Work-around for old bioses 928 * that do not support multiple root buses 929 */ 930 if (range_base && range_base <= range_limit) { 931 uint64_t length = range_limit - range_base + 1; 932 if (range_limit <= UINT32_MAX && length <= UINT32_MAX) { 933 crs_range_insert(temp_range_set.mem_ranges, 934 range_base, range_limit); 935 } else { 936 crs_range_insert(temp_range_set.mem_64bit_ranges, 937 range_base, range_limit); 938 } 939 } 940 } 941 } 942 943 crs_range_merge(temp_range_set.io_ranges); 944 for (i = 0; i < temp_range_set.io_ranges->len; i++) { 945 entry = g_ptr_array_index(temp_range_set.io_ranges, i); 946 aml_append(crs, 947 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 948 AML_POS_DECODE, AML_ENTIRE_RANGE, 949 0, entry->base, entry->limit, 0, 950 entry->limit - entry->base + 1)); 951 crs_range_insert(range_set->io_ranges, entry->base, entry->limit); 952 } 953 954 crs_range_merge(temp_range_set.mem_ranges); 955 for (i = 0; i < temp_range_set.mem_ranges->len; i++) { 956 entry = g_ptr_array_index(temp_range_set.mem_ranges, i); 957 aml_append(crs, 958 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, 959 AML_MAX_FIXED, AML_NON_CACHEABLE, 960 AML_READ_WRITE, 961 0, entry->base, entry->limit, 0, 962 entry->limit - entry->base + 1)); 963 crs_range_insert(range_set->mem_ranges, entry->base, entry->limit); 964 } 965 966 crs_range_merge(temp_range_set.mem_64bit_ranges); 967 for (i = 0; i < temp_range_set.mem_64bit_ranges->len; i++) { 968 entry = g_ptr_array_index(temp_range_set.mem_64bit_ranges, i); 969 aml_append(crs, 970 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, 971 AML_MAX_FIXED, AML_NON_CACHEABLE, 972 AML_READ_WRITE, 973 0, entry->base, entry->limit, 0, 974 entry->limit - entry->base + 1)); 975 crs_range_insert(range_set->mem_64bit_ranges, 976 entry->base, entry->limit); 977 } 978 979 crs_range_set_free(&temp_range_set); 980 981 aml_append(crs, 982 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, 983 0, 984 pci_bus_num(host->bus), 985 max_bus, 986 0, 987 max_bus - pci_bus_num(host->bus) + 1)); 988 989 return crs; 990 } 991 992 static void build_hpet_aml(Aml *table) 993 { 994 Aml *crs; 995 Aml *field; 996 Aml *method; 997 Aml *if_ctx; 998 Aml *scope = aml_scope("_SB"); 999 Aml *dev = aml_device("HPET"); 1000 Aml *zero = aml_int(0); 1001 Aml *id = aml_local(0); 1002 Aml *period = aml_local(1); 1003 1004 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0103"))); 1005 aml_append(dev, aml_name_decl("_UID", zero)); 1006 1007 aml_append(dev, 1008 aml_operation_region("HPTM", AML_SYSTEM_MEMORY, aml_int(HPET_BASE), 1009 HPET_LEN)); 1010 field = aml_field("HPTM", AML_DWORD_ACC, AML_LOCK, AML_PRESERVE); 1011 aml_append(field, aml_named_field("VEND", 32)); 1012 aml_append(field, aml_named_field("PRD", 32)); 1013 aml_append(dev, field); 1014 1015 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1016 aml_append(method, aml_store(aml_name("VEND"), id)); 1017 aml_append(method, aml_store(aml_name("PRD"), period)); 1018 aml_append(method, aml_shiftright(id, aml_int(16), id)); 1019 if_ctx = aml_if(aml_lor(aml_equal(id, zero), 1020 aml_equal(id, aml_int(0xffff)))); 1021 { 1022 aml_append(if_ctx, aml_return(zero)); 1023 } 1024 aml_append(method, if_ctx); 1025 1026 if_ctx = aml_if(aml_lor(aml_equal(period, zero), 1027 aml_lgreater(period, aml_int(100000000)))); 1028 { 1029 aml_append(if_ctx, aml_return(zero)); 1030 } 1031 aml_append(method, if_ctx); 1032 1033 aml_append(method, aml_return(aml_int(0x0F))); 1034 aml_append(dev, method); 1035 1036 crs = aml_resource_template(); 1037 aml_append(crs, aml_memory32_fixed(HPET_BASE, HPET_LEN, AML_READ_ONLY)); 1038 aml_append(dev, aml_name_decl("_CRS", crs)); 1039 1040 aml_append(scope, dev); 1041 aml_append(table, scope); 1042 } 1043 1044 static Aml *build_fdinfo_aml(int idx, FloppyDriveType type) 1045 { 1046 Aml *dev, *fdi; 1047 uint8_t maxc, maxh, maxs; 1048 1049 isa_fdc_get_drive_max_chs(type, &maxc, &maxh, &maxs); 1050 1051 dev = aml_device("FLP%c", 'A' + idx); 1052 1053 aml_append(dev, aml_name_decl("_ADR", aml_int(idx))); 1054 1055 fdi = aml_package(16); 1056 aml_append(fdi, aml_int(idx)); /* Drive Number */ 1057 aml_append(fdi, 1058 aml_int(cmos_get_fd_drive_type(type))); /* Device Type */ 1059 /* 1060 * the values below are the limits of the drive, and are thus independent 1061 * of the inserted media 1062 */ 1063 aml_append(fdi, aml_int(maxc)); /* Maximum Cylinder Number */ 1064 aml_append(fdi, aml_int(maxs)); /* Maximum Sector Number */ 1065 aml_append(fdi, aml_int(maxh)); /* Maximum Head Number */ 1066 /* 1067 * SeaBIOS returns the below values for int 0x13 func 0x08 regardless of 1068 * the drive type, so shall we 1069 */ 1070 aml_append(fdi, aml_int(0xAF)); /* disk_specify_1 */ 1071 aml_append(fdi, aml_int(0x02)); /* disk_specify_2 */ 1072 aml_append(fdi, aml_int(0x25)); /* disk_motor_wait */ 1073 aml_append(fdi, aml_int(0x02)); /* disk_sector_siz */ 1074 aml_append(fdi, aml_int(0x12)); /* disk_eot */ 1075 aml_append(fdi, aml_int(0x1B)); /* disk_rw_gap */ 1076 aml_append(fdi, aml_int(0xFF)); /* disk_dtl */ 1077 aml_append(fdi, aml_int(0x6C)); /* disk_formt_gap */ 1078 aml_append(fdi, aml_int(0xF6)); /* disk_fill */ 1079 aml_append(fdi, aml_int(0x0F)); /* disk_head_sttl */ 1080 aml_append(fdi, aml_int(0x08)); /* disk_motor_strt */ 1081 1082 aml_append(dev, aml_name_decl("_FDI", fdi)); 1083 return dev; 1084 } 1085 1086 static Aml *build_fdc_device_aml(ISADevice *fdc) 1087 { 1088 int i; 1089 Aml *dev; 1090 Aml *crs; 1091 1092 #define ACPI_FDE_MAX_FD 4 1093 uint32_t fde_buf[5] = { 1094 0, 0, 0, 0, /* presence of floppy drives #0 - #3 */ 1095 cpu_to_le32(2) /* tape presence (2 == never present) */ 1096 }; 1097 1098 dev = aml_device("FDC0"); 1099 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0700"))); 1100 1101 crs = aml_resource_template(); 1102 aml_append(crs, aml_io(AML_DECODE16, 0x03F2, 0x03F2, 0x00, 0x04)); 1103 aml_append(crs, aml_io(AML_DECODE16, 0x03F7, 0x03F7, 0x00, 0x01)); 1104 aml_append(crs, aml_irq_no_flags(6)); 1105 aml_append(crs, 1106 aml_dma(AML_COMPATIBILITY, AML_NOTBUSMASTER, AML_TRANSFER8, 2)); 1107 aml_append(dev, aml_name_decl("_CRS", crs)); 1108 1109 for (i = 0; i < MIN(MAX_FD, ACPI_FDE_MAX_FD); i++) { 1110 FloppyDriveType type = isa_fdc_get_drive_type(fdc, i); 1111 1112 if (type < FLOPPY_DRIVE_TYPE_NONE) { 1113 fde_buf[i] = cpu_to_le32(1); /* drive present */ 1114 aml_append(dev, build_fdinfo_aml(i, type)); 1115 } 1116 } 1117 aml_append(dev, aml_name_decl("_FDE", 1118 aml_buffer(sizeof(fde_buf), (uint8_t *)fde_buf))); 1119 1120 return dev; 1121 } 1122 1123 static Aml *build_rtc_device_aml(void) 1124 { 1125 Aml *dev; 1126 Aml *crs; 1127 1128 dev = aml_device("RTC"); 1129 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0B00"))); 1130 crs = aml_resource_template(); 1131 aml_append(crs, aml_io(AML_DECODE16, 0x0070, 0x0070, 0x10, 0x02)); 1132 aml_append(crs, aml_irq_no_flags(8)); 1133 aml_append(crs, aml_io(AML_DECODE16, 0x0072, 0x0072, 0x02, 0x06)); 1134 aml_append(dev, aml_name_decl("_CRS", crs)); 1135 1136 return dev; 1137 } 1138 1139 static Aml *build_kbd_device_aml(void) 1140 { 1141 Aml *dev; 1142 Aml *crs; 1143 Aml *method; 1144 1145 dev = aml_device("KBD"); 1146 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0303"))); 1147 1148 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1149 aml_append(method, aml_return(aml_int(0x0f))); 1150 aml_append(dev, method); 1151 1152 crs = aml_resource_template(); 1153 aml_append(crs, aml_io(AML_DECODE16, 0x0060, 0x0060, 0x01, 0x01)); 1154 aml_append(crs, aml_io(AML_DECODE16, 0x0064, 0x0064, 0x01, 0x01)); 1155 aml_append(crs, aml_irq_no_flags(1)); 1156 aml_append(dev, aml_name_decl("_CRS", crs)); 1157 1158 return dev; 1159 } 1160 1161 static Aml *build_mouse_device_aml(void) 1162 { 1163 Aml *dev; 1164 Aml *crs; 1165 Aml *method; 1166 1167 dev = aml_device("MOU"); 1168 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0F13"))); 1169 1170 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1171 aml_append(method, aml_return(aml_int(0x0f))); 1172 aml_append(dev, method); 1173 1174 crs = aml_resource_template(); 1175 aml_append(crs, aml_irq_no_flags(12)); 1176 aml_append(dev, aml_name_decl("_CRS", crs)); 1177 1178 return dev; 1179 } 1180 1181 static Aml *build_lpt_device_aml(void) 1182 { 1183 Aml *dev; 1184 Aml *crs; 1185 Aml *method; 1186 Aml *if_ctx; 1187 Aml *else_ctx; 1188 Aml *zero = aml_int(0); 1189 Aml *is_present = aml_local(0); 1190 1191 dev = aml_device("LPT"); 1192 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0400"))); 1193 1194 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1195 aml_append(method, aml_store(aml_name("LPEN"), is_present)); 1196 if_ctx = aml_if(aml_equal(is_present, zero)); 1197 { 1198 aml_append(if_ctx, aml_return(aml_int(0x00))); 1199 } 1200 aml_append(method, if_ctx); 1201 else_ctx = aml_else(); 1202 { 1203 aml_append(else_ctx, aml_return(aml_int(0x0f))); 1204 } 1205 aml_append(method, else_ctx); 1206 aml_append(dev, method); 1207 1208 crs = aml_resource_template(); 1209 aml_append(crs, aml_io(AML_DECODE16, 0x0378, 0x0378, 0x08, 0x08)); 1210 aml_append(crs, aml_irq_no_flags(7)); 1211 aml_append(dev, aml_name_decl("_CRS", crs)); 1212 1213 return dev; 1214 } 1215 1216 static Aml *build_com_device_aml(uint8_t uid) 1217 { 1218 Aml *dev; 1219 Aml *crs; 1220 Aml *method; 1221 Aml *if_ctx; 1222 Aml *else_ctx; 1223 Aml *zero = aml_int(0); 1224 Aml *is_present = aml_local(0); 1225 const char *enabled_field = "CAEN"; 1226 uint8_t irq = 4; 1227 uint16_t io_port = 0x03F8; 1228 1229 assert(uid == 1 || uid == 2); 1230 if (uid == 2) { 1231 enabled_field = "CBEN"; 1232 irq = 3; 1233 io_port = 0x02F8; 1234 } 1235 1236 dev = aml_device("COM%d", uid); 1237 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0501"))); 1238 aml_append(dev, aml_name_decl("_UID", aml_int(uid))); 1239 1240 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1241 aml_append(method, aml_store(aml_name("%s", enabled_field), is_present)); 1242 if_ctx = aml_if(aml_equal(is_present, zero)); 1243 { 1244 aml_append(if_ctx, aml_return(aml_int(0x00))); 1245 } 1246 aml_append(method, if_ctx); 1247 else_ctx = aml_else(); 1248 { 1249 aml_append(else_ctx, aml_return(aml_int(0x0f))); 1250 } 1251 aml_append(method, else_ctx); 1252 aml_append(dev, method); 1253 1254 crs = aml_resource_template(); 1255 aml_append(crs, aml_io(AML_DECODE16, io_port, io_port, 0x00, 0x08)); 1256 aml_append(crs, aml_irq_no_flags(irq)); 1257 aml_append(dev, aml_name_decl("_CRS", crs)); 1258 1259 return dev; 1260 } 1261 1262 static void build_isa_devices_aml(Aml *table) 1263 { 1264 ISADevice *fdc = pc_find_fdc0(); 1265 bool ambiguous; 1266 1267 Aml *scope = aml_scope("_SB.PCI0.ISA"); 1268 Object *obj = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous); 1269 1270 aml_append(scope, build_rtc_device_aml()); 1271 aml_append(scope, build_kbd_device_aml()); 1272 aml_append(scope, build_mouse_device_aml()); 1273 if (fdc) { 1274 aml_append(scope, build_fdc_device_aml(fdc)); 1275 } 1276 aml_append(scope, build_lpt_device_aml()); 1277 aml_append(scope, build_com_device_aml(1)); 1278 aml_append(scope, build_com_device_aml(2)); 1279 1280 if (ambiguous) { 1281 error_report("Multiple ISA busses, unable to define IPMI ACPI data"); 1282 } else if (!obj) { 1283 error_report("No ISA bus, unable to define IPMI ACPI data"); 1284 } else { 1285 build_acpi_ipmi_devices(scope, BUS(obj)); 1286 } 1287 1288 aml_append(table, scope); 1289 } 1290 1291 static void build_dbg_aml(Aml *table) 1292 { 1293 Aml *field; 1294 Aml *method; 1295 Aml *while_ctx; 1296 Aml *scope = aml_scope("\\"); 1297 Aml *buf = aml_local(0); 1298 Aml *len = aml_local(1); 1299 Aml *idx = aml_local(2); 1300 1301 aml_append(scope, 1302 aml_operation_region("DBG", AML_SYSTEM_IO, aml_int(0x0402), 0x01)); 1303 field = aml_field("DBG", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); 1304 aml_append(field, aml_named_field("DBGB", 8)); 1305 aml_append(scope, field); 1306 1307 method = aml_method("DBUG", 1, AML_NOTSERIALIZED); 1308 1309 aml_append(method, aml_to_hexstring(aml_arg(0), buf)); 1310 aml_append(method, aml_to_buffer(buf, buf)); 1311 aml_append(method, aml_subtract(aml_sizeof(buf), aml_int(1), len)); 1312 aml_append(method, aml_store(aml_int(0), idx)); 1313 1314 while_ctx = aml_while(aml_lless(idx, len)); 1315 aml_append(while_ctx, 1316 aml_store(aml_derefof(aml_index(buf, idx)), aml_name("DBGB"))); 1317 aml_append(while_ctx, aml_increment(idx)); 1318 aml_append(method, while_ctx); 1319 1320 aml_append(method, aml_store(aml_int(0x0A), aml_name("DBGB"))); 1321 aml_append(scope, method); 1322 1323 aml_append(table, scope); 1324 } 1325 1326 static Aml *build_link_dev(const char *name, uint8_t uid, Aml *reg) 1327 { 1328 Aml *dev; 1329 Aml *crs; 1330 Aml *method; 1331 uint32_t irqs[] = {5, 10, 11}; 1332 1333 dev = aml_device("%s", name); 1334 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 1335 aml_append(dev, aml_name_decl("_UID", aml_int(uid))); 1336 1337 crs = aml_resource_template(); 1338 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 1339 AML_SHARED, irqs, ARRAY_SIZE(irqs))); 1340 aml_append(dev, aml_name_decl("_PRS", crs)); 1341 1342 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1343 aml_append(method, aml_return(aml_call1("IQST", reg))); 1344 aml_append(dev, method); 1345 1346 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 1347 aml_append(method, aml_or(reg, aml_int(0x80), reg)); 1348 aml_append(dev, method); 1349 1350 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 1351 aml_append(method, aml_return(aml_call1("IQCR", reg))); 1352 aml_append(dev, method); 1353 1354 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 1355 aml_append(method, aml_create_dword_field(aml_arg(0), aml_int(5), "PRRI")); 1356 aml_append(method, aml_store(aml_name("PRRI"), reg)); 1357 aml_append(dev, method); 1358 1359 return dev; 1360 } 1361 1362 static Aml *build_gsi_link_dev(const char *name, uint8_t uid, uint8_t gsi) 1363 { 1364 Aml *dev; 1365 Aml *crs; 1366 Aml *method; 1367 uint32_t irqs; 1368 1369 dev = aml_device("%s", name); 1370 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 1371 aml_append(dev, aml_name_decl("_UID", aml_int(uid))); 1372 1373 crs = aml_resource_template(); 1374 irqs = gsi; 1375 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 1376 AML_SHARED, &irqs, 1)); 1377 aml_append(dev, aml_name_decl("_PRS", crs)); 1378 1379 aml_append(dev, aml_name_decl("_CRS", crs)); 1380 1381 /* 1382 * _DIS can be no-op because the interrupt cannot be disabled. 1383 */ 1384 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 1385 aml_append(dev, method); 1386 1387 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 1388 aml_append(dev, method); 1389 1390 return dev; 1391 } 1392 1393 /* _CRS method - get current settings */ 1394 static Aml *build_iqcr_method(bool is_piix4) 1395 { 1396 Aml *if_ctx; 1397 uint32_t irqs; 1398 Aml *method = aml_method("IQCR", 1, AML_SERIALIZED); 1399 Aml *crs = aml_resource_template(); 1400 1401 irqs = 0; 1402 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, 1403 AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1)); 1404 aml_append(method, aml_name_decl("PRR0", crs)); 1405 1406 aml_append(method, 1407 aml_create_dword_field(aml_name("PRR0"), aml_int(5), "PRRI")); 1408 1409 if (is_piix4) { 1410 if_ctx = aml_if(aml_lless(aml_arg(0), aml_int(0x80))); 1411 aml_append(if_ctx, aml_store(aml_arg(0), aml_name("PRRI"))); 1412 aml_append(method, if_ctx); 1413 } else { 1414 aml_append(method, 1415 aml_store(aml_and(aml_arg(0), aml_int(0xF), NULL), 1416 aml_name("PRRI"))); 1417 } 1418 1419 aml_append(method, aml_return(aml_name("PRR0"))); 1420 return method; 1421 } 1422 1423 /* _STA method - get status */ 1424 static Aml *build_irq_status_method(void) 1425 { 1426 Aml *if_ctx; 1427 Aml *method = aml_method("IQST", 1, AML_NOTSERIALIZED); 1428 1429 if_ctx = aml_if(aml_and(aml_int(0x80), aml_arg(0), NULL)); 1430 aml_append(if_ctx, aml_return(aml_int(0x09))); 1431 aml_append(method, if_ctx); 1432 aml_append(method, aml_return(aml_int(0x0B))); 1433 return method; 1434 } 1435 1436 static void build_piix4_pci0_int(Aml *table) 1437 { 1438 Aml *dev; 1439 Aml *crs; 1440 Aml *field; 1441 Aml *method; 1442 uint32_t irqs; 1443 Aml *sb_scope = aml_scope("_SB"); 1444 Aml *pci0_scope = aml_scope("PCI0"); 1445 1446 aml_append(pci0_scope, build_prt(true)); 1447 aml_append(sb_scope, pci0_scope); 1448 1449 field = aml_field("PCI0.ISA.P40C", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); 1450 aml_append(field, aml_named_field("PRQ0", 8)); 1451 aml_append(field, aml_named_field("PRQ1", 8)); 1452 aml_append(field, aml_named_field("PRQ2", 8)); 1453 aml_append(field, aml_named_field("PRQ3", 8)); 1454 aml_append(sb_scope, field); 1455 1456 aml_append(sb_scope, build_irq_status_method()); 1457 aml_append(sb_scope, build_iqcr_method(true)); 1458 1459 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQ0"))); 1460 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQ1"))); 1461 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQ2"))); 1462 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQ3"))); 1463 1464 dev = aml_device("LNKS"); 1465 { 1466 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 1467 aml_append(dev, aml_name_decl("_UID", aml_int(4))); 1468 1469 crs = aml_resource_template(); 1470 irqs = 9; 1471 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, 1472 AML_ACTIVE_HIGH, AML_SHARED, 1473 &irqs, 1)); 1474 aml_append(dev, aml_name_decl("_PRS", crs)); 1475 1476 /* The SCI cannot be disabled and is always attached to GSI 9, 1477 * so these are no-ops. We only need this link to override the 1478 * polarity to active high and match the content of the MADT. 1479 */ 1480 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1481 aml_append(method, aml_return(aml_int(0x0b))); 1482 aml_append(dev, method); 1483 1484 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 1485 aml_append(dev, method); 1486 1487 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 1488 aml_append(method, aml_return(aml_name("_PRS"))); 1489 aml_append(dev, method); 1490 1491 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 1492 aml_append(dev, method); 1493 } 1494 aml_append(sb_scope, dev); 1495 1496 aml_append(table, sb_scope); 1497 } 1498 1499 static void append_q35_prt_entry(Aml *ctx, uint32_t nr, const char *name) 1500 { 1501 int i; 1502 int head; 1503 Aml *pkg; 1504 char base = name[3] < 'E' ? 'A' : 'E'; 1505 char *s = g_strdup(name); 1506 Aml *a_nr = aml_int((nr << 16) | 0xffff); 1507 1508 assert(strlen(s) == 4); 1509 1510 head = name[3] - base; 1511 for (i = 0; i < 4; i++) { 1512 if (head + i > 3) { 1513 head = i * -1; 1514 } 1515 s[3] = base + head + i; 1516 pkg = aml_package(4); 1517 aml_append(pkg, a_nr); 1518 aml_append(pkg, aml_int(i)); 1519 aml_append(pkg, aml_name("%s", s)); 1520 aml_append(pkg, aml_int(0)); 1521 aml_append(ctx, pkg); 1522 } 1523 g_free(s); 1524 } 1525 1526 static Aml *build_q35_routing_table(const char *str) 1527 { 1528 int i; 1529 Aml *pkg; 1530 char *name = g_strdup_printf("%s ", str); 1531 1532 pkg = aml_package(128); 1533 for (i = 0; i < 0x18; i++) { 1534 name[3] = 'E' + (i & 0x3); 1535 append_q35_prt_entry(pkg, i, name); 1536 } 1537 1538 name[3] = 'E'; 1539 append_q35_prt_entry(pkg, 0x18, name); 1540 1541 /* INTA -> PIRQA for slot 25 - 31, see the default value of D<N>IR */ 1542 for (i = 0x0019; i < 0x1e; i++) { 1543 name[3] = 'A'; 1544 append_q35_prt_entry(pkg, i, name); 1545 } 1546 1547 /* PCIe->PCI bridge. use PIRQ[E-H] */ 1548 name[3] = 'E'; 1549 append_q35_prt_entry(pkg, 0x1e, name); 1550 name[3] = 'A'; 1551 append_q35_prt_entry(pkg, 0x1f, name); 1552 1553 g_free(name); 1554 return pkg; 1555 } 1556 1557 static void build_q35_pci0_int(Aml *table) 1558 { 1559 Aml *field; 1560 Aml *method; 1561 Aml *sb_scope = aml_scope("_SB"); 1562 Aml *pci0_scope = aml_scope("PCI0"); 1563 1564 /* Zero => PIC mode, One => APIC Mode */ 1565 aml_append(table, aml_name_decl("PICF", aml_int(0))); 1566 method = aml_method("_PIC", 1, AML_NOTSERIALIZED); 1567 { 1568 aml_append(method, aml_store(aml_arg(0), aml_name("PICF"))); 1569 } 1570 aml_append(table, method); 1571 1572 aml_append(pci0_scope, 1573 aml_name_decl("PRTP", build_q35_routing_table("LNK"))); 1574 aml_append(pci0_scope, 1575 aml_name_decl("PRTA", build_q35_routing_table("GSI"))); 1576 1577 method = aml_method("_PRT", 0, AML_NOTSERIALIZED); 1578 { 1579 Aml *if_ctx; 1580 Aml *else_ctx; 1581 1582 /* PCI IRQ routing table, example from ACPI 2.0a specification, 1583 section 6.2.8.1 */ 1584 /* Note: we provide the same info as the PCI routing 1585 table of the Bochs BIOS */ 1586 if_ctx = aml_if(aml_equal(aml_name("PICF"), aml_int(0))); 1587 aml_append(if_ctx, aml_return(aml_name("PRTP"))); 1588 aml_append(method, if_ctx); 1589 else_ctx = aml_else(); 1590 aml_append(else_ctx, aml_return(aml_name("PRTA"))); 1591 aml_append(method, else_ctx); 1592 } 1593 aml_append(pci0_scope, method); 1594 aml_append(sb_scope, pci0_scope); 1595 1596 field = aml_field("PCI0.ISA.PIRQ", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); 1597 aml_append(field, aml_named_field("PRQA", 8)); 1598 aml_append(field, aml_named_field("PRQB", 8)); 1599 aml_append(field, aml_named_field("PRQC", 8)); 1600 aml_append(field, aml_named_field("PRQD", 8)); 1601 aml_append(field, aml_reserved_field(0x20)); 1602 aml_append(field, aml_named_field("PRQE", 8)); 1603 aml_append(field, aml_named_field("PRQF", 8)); 1604 aml_append(field, aml_named_field("PRQG", 8)); 1605 aml_append(field, aml_named_field("PRQH", 8)); 1606 aml_append(sb_scope, field); 1607 1608 aml_append(sb_scope, build_irq_status_method()); 1609 aml_append(sb_scope, build_iqcr_method(false)); 1610 1611 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQA"))); 1612 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQB"))); 1613 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQC"))); 1614 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQD"))); 1615 aml_append(sb_scope, build_link_dev("LNKE", 4, aml_name("PRQE"))); 1616 aml_append(sb_scope, build_link_dev("LNKF", 5, aml_name("PRQF"))); 1617 aml_append(sb_scope, build_link_dev("LNKG", 6, aml_name("PRQG"))); 1618 aml_append(sb_scope, build_link_dev("LNKH", 7, aml_name("PRQH"))); 1619 1620 aml_append(sb_scope, build_gsi_link_dev("GSIA", 0x10, 0x10)); 1621 aml_append(sb_scope, build_gsi_link_dev("GSIB", 0x11, 0x11)); 1622 aml_append(sb_scope, build_gsi_link_dev("GSIC", 0x12, 0x12)); 1623 aml_append(sb_scope, build_gsi_link_dev("GSID", 0x13, 0x13)); 1624 aml_append(sb_scope, build_gsi_link_dev("GSIE", 0x14, 0x14)); 1625 aml_append(sb_scope, build_gsi_link_dev("GSIF", 0x15, 0x15)); 1626 aml_append(sb_scope, build_gsi_link_dev("GSIG", 0x16, 0x16)); 1627 aml_append(sb_scope, build_gsi_link_dev("GSIH", 0x17, 0x17)); 1628 1629 aml_append(table, sb_scope); 1630 } 1631 1632 static void build_q35_isa_bridge(Aml *table) 1633 { 1634 Aml *dev; 1635 Aml *scope; 1636 Aml *field; 1637 1638 scope = aml_scope("_SB.PCI0"); 1639 dev = aml_device("ISA"); 1640 aml_append(dev, aml_name_decl("_ADR", aml_int(0x001F0000))); 1641 1642 /* ICH9 PCI to ISA irq remapping */ 1643 aml_append(dev, aml_operation_region("PIRQ", AML_PCI_CONFIG, 1644 aml_int(0x60), 0x0C)); 1645 1646 aml_append(dev, aml_operation_region("LPCD", AML_PCI_CONFIG, 1647 aml_int(0x80), 0x02)); 1648 field = aml_field("LPCD", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE); 1649 aml_append(field, aml_named_field("COMA", 3)); 1650 aml_append(field, aml_reserved_field(1)); 1651 aml_append(field, aml_named_field("COMB", 3)); 1652 aml_append(field, aml_reserved_field(1)); 1653 aml_append(field, aml_named_field("LPTD", 2)); 1654 aml_append(dev, field); 1655 1656 aml_append(dev, aml_operation_region("LPCE", AML_PCI_CONFIG, 1657 aml_int(0x82), 0x02)); 1658 /* enable bits */ 1659 field = aml_field("LPCE", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE); 1660 aml_append(field, aml_named_field("CAEN", 1)); 1661 aml_append(field, aml_named_field("CBEN", 1)); 1662 aml_append(field, aml_named_field("LPEN", 1)); 1663 aml_append(dev, field); 1664 1665 aml_append(scope, dev); 1666 aml_append(table, scope); 1667 } 1668 1669 static void build_piix4_pm(Aml *table) 1670 { 1671 Aml *dev; 1672 Aml *scope; 1673 1674 scope = aml_scope("_SB.PCI0"); 1675 dev = aml_device("PX13"); 1676 aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010003))); 1677 1678 aml_append(dev, aml_operation_region("P13C", AML_PCI_CONFIG, 1679 aml_int(0x00), 0xff)); 1680 aml_append(scope, dev); 1681 aml_append(table, scope); 1682 } 1683 1684 static void build_piix4_isa_bridge(Aml *table) 1685 { 1686 Aml *dev; 1687 Aml *scope; 1688 Aml *field; 1689 1690 scope = aml_scope("_SB.PCI0"); 1691 dev = aml_device("ISA"); 1692 aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010000))); 1693 1694 /* PIIX PCI to ISA irq remapping */ 1695 aml_append(dev, aml_operation_region("P40C", AML_PCI_CONFIG, 1696 aml_int(0x60), 0x04)); 1697 /* enable bits */ 1698 field = aml_field("^PX13.P13C", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE); 1699 /* Offset(0x5f),, 7, */ 1700 aml_append(field, aml_reserved_field(0x2f8)); 1701 aml_append(field, aml_reserved_field(7)); 1702 aml_append(field, aml_named_field("LPEN", 1)); 1703 /* Offset(0x67),, 3, */ 1704 aml_append(field, aml_reserved_field(0x38)); 1705 aml_append(field, aml_reserved_field(3)); 1706 aml_append(field, aml_named_field("CAEN", 1)); 1707 aml_append(field, aml_reserved_field(3)); 1708 aml_append(field, aml_named_field("CBEN", 1)); 1709 aml_append(dev, field); 1710 1711 aml_append(scope, dev); 1712 aml_append(table, scope); 1713 } 1714 1715 static void build_piix4_pci_hotplug(Aml *table) 1716 { 1717 Aml *scope; 1718 Aml *field; 1719 Aml *method; 1720 1721 scope = aml_scope("_SB.PCI0"); 1722 1723 aml_append(scope, 1724 aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(0xae00), 0x08)); 1725 field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1726 aml_append(field, aml_named_field("PCIU", 32)); 1727 aml_append(field, aml_named_field("PCID", 32)); 1728 aml_append(scope, field); 1729 1730 aml_append(scope, 1731 aml_operation_region("SEJ", AML_SYSTEM_IO, aml_int(0xae08), 0x04)); 1732 field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1733 aml_append(field, aml_named_field("B0EJ", 32)); 1734 aml_append(scope, field); 1735 1736 aml_append(scope, 1737 aml_operation_region("BNMR", AML_SYSTEM_IO, aml_int(0xae10), 0x04)); 1738 field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1739 aml_append(field, aml_named_field("BNUM", 32)); 1740 aml_append(scope, field); 1741 1742 aml_append(scope, aml_mutex("BLCK", 0)); 1743 1744 method = aml_method("PCEJ", 2, AML_NOTSERIALIZED); 1745 aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF)); 1746 aml_append(method, aml_store(aml_arg(0), aml_name("BNUM"))); 1747 aml_append(method, 1748 aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ"))); 1749 aml_append(method, aml_release(aml_name("BLCK"))); 1750 aml_append(method, aml_return(aml_int(0))); 1751 aml_append(scope, method); 1752 1753 aml_append(table, scope); 1754 } 1755 1756 static Aml *build_q35_osc_method(void) 1757 { 1758 Aml *if_ctx; 1759 Aml *if_ctx2; 1760 Aml *else_ctx; 1761 Aml *method; 1762 Aml *a_cwd1 = aml_name("CDW1"); 1763 Aml *a_ctrl = aml_local(0); 1764 1765 method = aml_method("_OSC", 4, AML_NOTSERIALIZED); 1766 aml_append(method, aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1")); 1767 1768 if_ctx = aml_if(aml_equal( 1769 aml_arg(0), aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766"))); 1770 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2")); 1771 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3")); 1772 1773 aml_append(if_ctx, aml_store(aml_name("CDW3"), a_ctrl)); 1774 1775 /* 1776 * Always allow native PME, AER (no dependencies) 1777 * Allow SHPC (PCI bridges can have SHPC controller) 1778 */ 1779 aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl)); 1780 1781 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1)))); 1782 /* Unknown revision */ 1783 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x08), a_cwd1)); 1784 aml_append(if_ctx, if_ctx2); 1785 1786 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), a_ctrl))); 1787 /* Capabilities bits were masked */ 1788 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x10), a_cwd1)); 1789 aml_append(if_ctx, if_ctx2); 1790 1791 /* Update DWORD3 in the buffer */ 1792 aml_append(if_ctx, aml_store(a_ctrl, aml_name("CDW3"))); 1793 aml_append(method, if_ctx); 1794 1795 else_ctx = aml_else(); 1796 /* Unrecognized UUID */ 1797 aml_append(else_ctx, aml_or(a_cwd1, aml_int(4), a_cwd1)); 1798 aml_append(method, else_ctx); 1799 1800 aml_append(method, aml_return(aml_arg(3))); 1801 return method; 1802 } 1803 1804 static void 1805 build_dsdt(GArray *table_data, BIOSLinker *linker, 1806 AcpiPmInfo *pm, AcpiMiscInfo *misc, 1807 Range *pci_hole, Range *pci_hole64, MachineState *machine) 1808 { 1809 CrsRangeEntry *entry; 1810 Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs; 1811 CrsRangeSet crs_range_set; 1812 PCMachineState *pcms = PC_MACHINE(machine); 1813 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine); 1814 uint32_t nr_mem = machine->ram_slots; 1815 int root_bus_limit = 0xFF; 1816 PCIBus *bus = NULL; 1817 TPMIf *tpm = tpm_find(); 1818 int i; 1819 1820 dsdt = init_aml_allocator(); 1821 1822 /* Reserve space for header */ 1823 acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader)); 1824 1825 build_dbg_aml(dsdt); 1826 if (misc->is_piix4) { 1827 sb_scope = aml_scope("_SB"); 1828 dev = aml_device("PCI0"); 1829 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); 1830 aml_append(dev, aml_name_decl("_ADR", aml_int(0))); 1831 aml_append(dev, aml_name_decl("_UID", aml_int(1))); 1832 aml_append(sb_scope, dev); 1833 aml_append(dsdt, sb_scope); 1834 1835 build_hpet_aml(dsdt); 1836 build_piix4_pm(dsdt); 1837 build_piix4_isa_bridge(dsdt); 1838 build_isa_devices_aml(dsdt); 1839 build_piix4_pci_hotplug(dsdt); 1840 build_piix4_pci0_int(dsdt); 1841 } else { 1842 sb_scope = aml_scope("_SB"); 1843 dev = aml_device("PCI0"); 1844 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); 1845 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); 1846 aml_append(dev, aml_name_decl("_ADR", aml_int(0))); 1847 aml_append(dev, aml_name_decl("_UID", aml_int(1))); 1848 aml_append(dev, build_q35_osc_method()); 1849 aml_append(sb_scope, dev); 1850 aml_append(dsdt, sb_scope); 1851 1852 build_hpet_aml(dsdt); 1853 build_q35_isa_bridge(dsdt); 1854 build_isa_devices_aml(dsdt); 1855 build_q35_pci0_int(dsdt); 1856 } 1857 1858 if (pcmc->legacy_cpu_hotplug) { 1859 build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base); 1860 } else { 1861 CPUHotplugFeatures opts = { 1862 .acpi_1_compatible = true, .has_legacy_cphp = true 1863 }; 1864 build_cpus_aml(dsdt, machine, opts, pm->cpu_hp_io_base, 1865 "\\_SB.PCI0", "\\_GPE._E02"); 1866 } 1867 build_memory_hotplug_aml(dsdt, nr_mem, "\\_SB.PCI0", "\\_GPE._E03"); 1868 1869 scope = aml_scope("_GPE"); 1870 { 1871 aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006"))); 1872 1873 if (misc->is_piix4) { 1874 method = aml_method("_E01", 0, AML_NOTSERIALIZED); 1875 aml_append(method, 1876 aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF)); 1877 aml_append(method, aml_call0("\\_SB.PCI0.PCNT")); 1878 aml_append(method, aml_release(aml_name("\\_SB.PCI0.BLCK"))); 1879 aml_append(scope, method); 1880 } 1881 1882 if (machine->nvdimms_state->is_enabled) { 1883 method = aml_method("_E04", 0, AML_NOTSERIALIZED); 1884 aml_append(method, aml_notify(aml_name("\\_SB.NVDR"), 1885 aml_int(0x80))); 1886 aml_append(scope, method); 1887 } 1888 } 1889 aml_append(dsdt, scope); 1890 1891 crs_range_set_init(&crs_range_set); 1892 bus = PC_MACHINE(machine)->bus; 1893 if (bus) { 1894 QLIST_FOREACH(bus, &bus->child, sibling) { 1895 uint8_t bus_num = pci_bus_num(bus); 1896 uint8_t numa_node = pci_bus_numa_node(bus); 1897 1898 /* look only for expander root buses */ 1899 if (!pci_bus_is_root(bus)) { 1900 continue; 1901 } 1902 1903 if (bus_num < root_bus_limit) { 1904 root_bus_limit = bus_num - 1; 1905 } 1906 1907 scope = aml_scope("\\_SB"); 1908 dev = aml_device("PC%.02X", bus_num); 1909 aml_append(dev, aml_name_decl("_UID", aml_int(bus_num))); 1910 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); 1911 aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); 1912 if (pci_bus_is_express(bus)) { 1913 aml_append(dev, build_q35_osc_method()); 1914 } 1915 1916 if (numa_node != NUMA_NODE_UNASSIGNED) { 1917 aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node))); 1918 } 1919 1920 aml_append(dev, build_prt(false)); 1921 crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set); 1922 aml_append(dev, aml_name_decl("_CRS", crs)); 1923 aml_append(scope, dev); 1924 aml_append(dsdt, scope); 1925 } 1926 } 1927 1928 scope = aml_scope("\\_SB.PCI0"); 1929 /* build PCI0._CRS */ 1930 crs = aml_resource_template(); 1931 aml_append(crs, 1932 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, 1933 0x0000, 0x0, root_bus_limit, 1934 0x0000, root_bus_limit + 1)); 1935 aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08)); 1936 1937 aml_append(crs, 1938 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 1939 AML_POS_DECODE, AML_ENTIRE_RANGE, 1940 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8)); 1941 1942 crs_replace_with_free_ranges(crs_range_set.io_ranges, 0x0D00, 0xFFFF); 1943 for (i = 0; i < crs_range_set.io_ranges->len; i++) { 1944 entry = g_ptr_array_index(crs_range_set.io_ranges, i); 1945 aml_append(crs, 1946 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 1947 AML_POS_DECODE, AML_ENTIRE_RANGE, 1948 0x0000, entry->base, entry->limit, 1949 0x0000, entry->limit - entry->base + 1)); 1950 } 1951 1952 aml_append(crs, 1953 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 1954 AML_CACHEABLE, AML_READ_WRITE, 1955 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000)); 1956 1957 crs_replace_with_free_ranges(crs_range_set.mem_ranges, 1958 range_lob(pci_hole), 1959 range_upb(pci_hole)); 1960 for (i = 0; i < crs_range_set.mem_ranges->len; i++) { 1961 entry = g_ptr_array_index(crs_range_set.mem_ranges, i); 1962 aml_append(crs, 1963 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 1964 AML_NON_CACHEABLE, AML_READ_WRITE, 1965 0, entry->base, entry->limit, 1966 0, entry->limit - entry->base + 1)); 1967 } 1968 1969 if (!range_is_empty(pci_hole64)) { 1970 crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges, 1971 range_lob(pci_hole64), 1972 range_upb(pci_hole64)); 1973 for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) { 1974 entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i); 1975 aml_append(crs, 1976 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, 1977 AML_MAX_FIXED, 1978 AML_CACHEABLE, AML_READ_WRITE, 1979 0, entry->base, entry->limit, 1980 0, entry->limit - entry->base + 1)); 1981 } 1982 } 1983 1984 if (TPM_IS_TIS(tpm_find())) { 1985 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE, 1986 TPM_TIS_ADDR_SIZE, AML_READ_WRITE)); 1987 } 1988 aml_append(scope, aml_name_decl("_CRS", crs)); 1989 1990 /* reserve GPE0 block resources */ 1991 dev = aml_device("GPE0"); 1992 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 1993 aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources"))); 1994 /* device present, functioning, decoding, not shown in UI */ 1995 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 1996 crs = aml_resource_template(); 1997 aml_append(crs, 1998 aml_io( 1999 AML_DECODE16, 2000 pm->fadt.gpe0_blk.address, 2001 pm->fadt.gpe0_blk.address, 2002 1, 2003 pm->fadt.gpe0_blk.bit_width / 8) 2004 ); 2005 aml_append(dev, aml_name_decl("_CRS", crs)); 2006 aml_append(scope, dev); 2007 2008 crs_range_set_free(&crs_range_set); 2009 2010 /* reserve PCIHP resources */ 2011 if (pm->pcihp_io_len) { 2012 dev = aml_device("PHPR"); 2013 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 2014 aml_append(dev, 2015 aml_name_decl("_UID", aml_string("PCI Hotplug resources"))); 2016 /* device present, functioning, decoding, not shown in UI */ 2017 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 2018 crs = aml_resource_template(); 2019 aml_append(crs, 2020 aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1, 2021 pm->pcihp_io_len) 2022 ); 2023 aml_append(dev, aml_name_decl("_CRS", crs)); 2024 aml_append(scope, dev); 2025 } 2026 aml_append(dsdt, scope); 2027 2028 /* create S3_ / S4_ / S5_ packages if necessary */ 2029 scope = aml_scope("\\"); 2030 if (!pm->s3_disabled) { 2031 pkg = aml_package(4); 2032 aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */ 2033 aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ 2034 aml_append(pkg, aml_int(0)); /* reserved */ 2035 aml_append(pkg, aml_int(0)); /* reserved */ 2036 aml_append(scope, aml_name_decl("_S3", pkg)); 2037 } 2038 2039 if (!pm->s4_disabled) { 2040 pkg = aml_package(4); 2041 aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */ 2042 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ 2043 aml_append(pkg, aml_int(pm->s4_val)); 2044 aml_append(pkg, aml_int(0)); /* reserved */ 2045 aml_append(pkg, aml_int(0)); /* reserved */ 2046 aml_append(scope, aml_name_decl("_S4", pkg)); 2047 } 2048 2049 pkg = aml_package(4); 2050 aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */ 2051 aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */ 2052 aml_append(pkg, aml_int(0)); /* reserved */ 2053 aml_append(pkg, aml_int(0)); /* reserved */ 2054 aml_append(scope, aml_name_decl("_S5", pkg)); 2055 aml_append(dsdt, scope); 2056 2057 /* create fw_cfg node, unconditionally */ 2058 { 2059 /* when using port i/o, the 8-bit data register *always* overlaps 2060 * with half of the 16-bit control register. Hence, the total size 2061 * of the i/o region used is FW_CFG_CTL_SIZE; when using DMA, the 2062 * DMA control register is located at FW_CFG_DMA_IO_BASE + 4 */ 2063 uint8_t io_size = object_property_get_bool(OBJECT(pcms->fw_cfg), 2064 "dma_enabled", NULL) ? 2065 ROUND_UP(FW_CFG_CTL_SIZE, 4) + sizeof(dma_addr_t) : 2066 FW_CFG_CTL_SIZE; 2067 2068 scope = aml_scope("\\_SB.PCI0"); 2069 dev = aml_device("FWCF"); 2070 2071 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002"))); 2072 2073 /* device present, functioning, decoding, not shown in UI */ 2074 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 2075 2076 crs = aml_resource_template(); 2077 aml_append(crs, 2078 aml_io(AML_DECODE16, FW_CFG_IO_BASE, FW_CFG_IO_BASE, 0x01, io_size) 2079 ); 2080 aml_append(dev, aml_name_decl("_CRS", crs)); 2081 2082 aml_append(scope, dev); 2083 aml_append(dsdt, scope); 2084 } 2085 2086 if (misc->applesmc_io_base) { 2087 scope = aml_scope("\\_SB.PCI0.ISA"); 2088 dev = aml_device("SMC"); 2089 2090 aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0001"))); 2091 /* device present, functioning, decoding, not shown in UI */ 2092 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 2093 2094 crs = aml_resource_template(); 2095 aml_append(crs, 2096 aml_io(AML_DECODE16, misc->applesmc_io_base, misc->applesmc_io_base, 2097 0x01, APPLESMC_MAX_DATA_LENGTH) 2098 ); 2099 aml_append(crs, aml_irq_no_flags(6)); 2100 aml_append(dev, aml_name_decl("_CRS", crs)); 2101 2102 aml_append(scope, dev); 2103 aml_append(dsdt, scope); 2104 } 2105 2106 if (misc->pvpanic_port) { 2107 scope = aml_scope("\\_SB.PCI0.ISA"); 2108 2109 dev = aml_device("PEVT"); 2110 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0001"))); 2111 2112 crs = aml_resource_template(); 2113 aml_append(crs, 2114 aml_io(AML_DECODE16, misc->pvpanic_port, misc->pvpanic_port, 1, 1) 2115 ); 2116 aml_append(dev, aml_name_decl("_CRS", crs)); 2117 2118 aml_append(dev, aml_operation_region("PEOR", AML_SYSTEM_IO, 2119 aml_int(misc->pvpanic_port), 1)); 2120 field = aml_field("PEOR", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); 2121 aml_append(field, aml_named_field("PEPT", 8)); 2122 aml_append(dev, field); 2123 2124 /* device present, functioning, decoding, shown in UI */ 2125 aml_append(dev, aml_name_decl("_STA", aml_int(0xF))); 2126 2127 method = aml_method("RDPT", 0, AML_NOTSERIALIZED); 2128 aml_append(method, aml_store(aml_name("PEPT"), aml_local(0))); 2129 aml_append(method, aml_return(aml_local(0))); 2130 aml_append(dev, method); 2131 2132 method = aml_method("WRPT", 1, AML_NOTSERIALIZED); 2133 aml_append(method, aml_store(aml_arg(0), aml_name("PEPT"))); 2134 aml_append(dev, method); 2135 2136 aml_append(scope, dev); 2137 aml_append(dsdt, scope); 2138 } 2139 2140 sb_scope = aml_scope("\\_SB"); 2141 { 2142 Object *pci_host; 2143 PCIBus *bus = NULL; 2144 2145 pci_host = acpi_get_i386_pci_host(); 2146 if (pci_host) { 2147 bus = PCI_HOST_BRIDGE(pci_host)->bus; 2148 } 2149 2150 if (bus) { 2151 Aml *scope = aml_scope("PCI0"); 2152 /* Scan all PCI buses. Generate tables to support hotplug. */ 2153 build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en); 2154 2155 if (TPM_IS_TIS(tpm)) { 2156 if (misc->tpm_version == TPM_VERSION_2_0) { 2157 dev = aml_device("TPM"); 2158 aml_append(dev, aml_name_decl("_HID", 2159 aml_string("MSFT0101"))); 2160 } else { 2161 dev = aml_device("ISA.TPM"); 2162 aml_append(dev, aml_name_decl("_HID", 2163 aml_eisaid("PNP0C31"))); 2164 } 2165 2166 aml_append(dev, aml_name_decl("_STA", aml_int(0xF))); 2167 crs = aml_resource_template(); 2168 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE, 2169 TPM_TIS_ADDR_SIZE, AML_READ_WRITE)); 2170 /* 2171 FIXME: TPM_TIS_IRQ=5 conflicts with PNP0C0F irqs, 2172 Rewrite to take IRQ from TPM device model and 2173 fix default IRQ value there to use some unused IRQ 2174 */ 2175 /* aml_append(crs, aml_irq_no_flags(TPM_TIS_IRQ)); */ 2176 aml_append(dev, aml_name_decl("_CRS", crs)); 2177 2178 tpm_build_ppi_acpi(tpm, dev); 2179 2180 aml_append(scope, dev); 2181 } 2182 2183 aml_append(sb_scope, scope); 2184 } 2185 } 2186 2187 if (TPM_IS_CRB(tpm)) { 2188 dev = aml_device("TPM"); 2189 aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); 2190 crs = aml_resource_template(); 2191 aml_append(crs, aml_memory32_fixed(TPM_CRB_ADDR_BASE, 2192 TPM_CRB_ADDR_SIZE, AML_READ_WRITE)); 2193 aml_append(dev, aml_name_decl("_CRS", crs)); 2194 2195 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 2196 aml_append(method, aml_return(aml_int(0x0f))); 2197 aml_append(dev, method); 2198 2199 tpm_build_ppi_acpi(tpm, dev); 2200 2201 aml_append(sb_scope, dev); 2202 } 2203 2204 aml_append(dsdt, sb_scope); 2205 2206 /* copy AML table into ACPI tables blob and patch header there */ 2207 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); 2208 build_header(linker, table_data, 2209 (void *)(table_data->data + table_data->len - dsdt->buf->len), 2210 "DSDT", dsdt->buf->len, 1, NULL, NULL); 2211 free_aml_allocator(); 2212 } 2213 2214 static void 2215 build_hpet(GArray *table_data, BIOSLinker *linker) 2216 { 2217 Acpi20Hpet *hpet; 2218 2219 hpet = acpi_data_push(table_data, sizeof(*hpet)); 2220 /* Note timer_block_id value must be kept in sync with value advertised by 2221 * emulated hpet 2222 */ 2223 hpet->timer_block_id = cpu_to_le32(0x8086a201); 2224 hpet->addr.address = cpu_to_le64(HPET_BASE); 2225 build_header(linker, table_data, 2226 (void *)hpet, "HPET", sizeof(*hpet), 1, NULL, NULL); 2227 } 2228 2229 static void 2230 build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog) 2231 { 2232 Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa); 2233 unsigned log_addr_size = sizeof(tcpa->log_area_start_address); 2234 unsigned log_addr_offset = 2235 (char *)&tcpa->log_area_start_address - table_data->data; 2236 2237 tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT); 2238 tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE); 2239 acpi_data_push(tcpalog, le32_to_cpu(tcpa->log_area_minimum_length)); 2240 2241 bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, tcpalog, 1, 2242 false /* high memory */); 2243 2244 /* log area start address to be filled by Guest linker */ 2245 bios_linker_loader_add_pointer(linker, 2246 ACPI_BUILD_TABLE_FILE, log_addr_offset, log_addr_size, 2247 ACPI_BUILD_TPMLOG_FILE, 0); 2248 2249 build_header(linker, table_data, 2250 (void *)tcpa, "TCPA", sizeof(*tcpa), 2, NULL, NULL); 2251 } 2252 2253 static void 2254 build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog) 2255 { 2256 Acpi20TPM2 *tpm2_ptr = acpi_data_push(table_data, sizeof *tpm2_ptr); 2257 unsigned log_addr_size = sizeof(tpm2_ptr->log_area_start_address); 2258 unsigned log_addr_offset = 2259 (char *)&tpm2_ptr->log_area_start_address - table_data->data; 2260 2261 tpm2_ptr->platform_class = cpu_to_le16(TPM2_ACPI_CLASS_CLIENT); 2262 if (TPM_IS_TIS(tpm_find())) { 2263 tpm2_ptr->control_area_address = cpu_to_le64(0); 2264 tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_MMIO); 2265 } else if (TPM_IS_CRB(tpm_find())) { 2266 tpm2_ptr->control_area_address = cpu_to_le64(TPM_CRB_ADDR_CTRL); 2267 tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_CRB); 2268 } else { 2269 g_warn_if_reached(); 2270 } 2271 2272 tpm2_ptr->log_area_minimum_length = 2273 cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE); 2274 2275 /* log area start address to be filled by Guest linker */ 2276 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, 2277 log_addr_offset, log_addr_size, 2278 ACPI_BUILD_TPMLOG_FILE, 0); 2279 build_header(linker, table_data, 2280 (void *)tpm2_ptr, "TPM2", sizeof(*tpm2_ptr), 4, NULL, NULL); 2281 } 2282 2283 #define HOLE_640K_START (640 * KiB) 2284 #define HOLE_640K_END (1 * MiB) 2285 2286 static void 2287 build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) 2288 { 2289 AcpiSystemResourceAffinityTable *srat; 2290 AcpiSratMemoryAffinity *numamem; 2291 2292 int i; 2293 int srat_start, numa_start, slots; 2294 uint64_t mem_len, mem_base, next_base; 2295 MachineClass *mc = MACHINE_GET_CLASS(machine); 2296 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine); 2297 PCMachineState *pcms = PC_MACHINE(machine); 2298 ram_addr_t hotplugabble_address_space_size = 2299 object_property_get_int(OBJECT(pcms), PC_MACHINE_DEVMEM_REGION_SIZE, 2300 NULL); 2301 2302 srat_start = table_data->len; 2303 2304 srat = acpi_data_push(table_data, sizeof *srat); 2305 srat->reserved1 = cpu_to_le32(1); 2306 2307 for (i = 0; i < apic_ids->len; i++) { 2308 int node_id = apic_ids->cpus[i].props.node_id; 2309 uint32_t apic_id = apic_ids->cpus[i].arch_id; 2310 2311 if (apic_id < 255) { 2312 AcpiSratProcessorAffinity *core; 2313 2314 core = acpi_data_push(table_data, sizeof *core); 2315 core->type = ACPI_SRAT_PROCESSOR_APIC; 2316 core->length = sizeof(*core); 2317 core->local_apic_id = apic_id; 2318 core->proximity_lo = node_id; 2319 memset(core->proximity_hi, 0, 3); 2320 core->local_sapic_eid = 0; 2321 core->flags = cpu_to_le32(1); 2322 } else { 2323 AcpiSratProcessorX2ApicAffinity *core; 2324 2325 core = acpi_data_push(table_data, sizeof *core); 2326 core->type = ACPI_SRAT_PROCESSOR_x2APIC; 2327 core->length = sizeof(*core); 2328 core->x2apic_id = cpu_to_le32(apic_id); 2329 core->proximity_domain = cpu_to_le32(node_id); 2330 core->flags = cpu_to_le32(1); 2331 } 2332 } 2333 2334 2335 /* the memory map is a bit tricky, it contains at least one hole 2336 * from 640k-1M and possibly another one from 3.5G-4G. 2337 */ 2338 next_base = 0; 2339 numa_start = table_data->len; 2340 2341 for (i = 1; i < pcms->numa_nodes + 1; ++i) { 2342 mem_base = next_base; 2343 mem_len = pcms->node_mem[i - 1]; 2344 next_base = mem_base + mem_len; 2345 2346 /* Cut out the 640K hole */ 2347 if (mem_base <= HOLE_640K_START && 2348 next_base > HOLE_640K_START) { 2349 mem_len -= next_base - HOLE_640K_START; 2350 if (mem_len > 0) { 2351 numamem = acpi_data_push(table_data, sizeof *numamem); 2352 build_srat_memory(numamem, mem_base, mem_len, i - 1, 2353 MEM_AFFINITY_ENABLED); 2354 } 2355 2356 /* Check for the rare case: 640K < RAM < 1M */ 2357 if (next_base <= HOLE_640K_END) { 2358 next_base = HOLE_640K_END; 2359 continue; 2360 } 2361 mem_base = HOLE_640K_END; 2362 mem_len = next_base - HOLE_640K_END; 2363 } 2364 2365 /* Cut out the ACPI_PCI hole */ 2366 if (mem_base <= pcms->below_4g_mem_size && 2367 next_base > pcms->below_4g_mem_size) { 2368 mem_len -= next_base - pcms->below_4g_mem_size; 2369 if (mem_len > 0) { 2370 numamem = acpi_data_push(table_data, sizeof *numamem); 2371 build_srat_memory(numamem, mem_base, mem_len, i - 1, 2372 MEM_AFFINITY_ENABLED); 2373 } 2374 mem_base = 1ULL << 32; 2375 mem_len = next_base - pcms->below_4g_mem_size; 2376 next_base = mem_base + mem_len; 2377 } 2378 2379 if (mem_len > 0) { 2380 numamem = acpi_data_push(table_data, sizeof *numamem); 2381 build_srat_memory(numamem, mem_base, mem_len, i - 1, 2382 MEM_AFFINITY_ENABLED); 2383 } 2384 } 2385 slots = (table_data->len - numa_start) / sizeof *numamem; 2386 for (; slots < pcms->numa_nodes + 2; slots++) { 2387 numamem = acpi_data_push(table_data, sizeof *numamem); 2388 build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS); 2389 } 2390 2391 /* 2392 * Entry is required for Windows to enable memory hotplug in OS 2393 * and for Linux to enable SWIOTLB when booted with less than 2394 * 4G of RAM. Windows works better if the entry sets proximity 2395 * to the highest NUMA node in the machine. 2396 * Memory devices may override proximity set by this entry, 2397 * providing _PXM method if necessary. 2398 */ 2399 if (hotplugabble_address_space_size) { 2400 numamem = acpi_data_push(table_data, sizeof *numamem); 2401 build_srat_memory(numamem, machine->device_memory->base, 2402 hotplugabble_address_space_size, pcms->numa_nodes - 1, 2403 MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); 2404 } 2405 2406 build_header(linker, table_data, 2407 (void *)(table_data->data + srat_start), 2408 "SRAT", 2409 table_data->len - srat_start, 1, NULL, NULL); 2410 } 2411 2412 static void 2413 build_mcfg_q35(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info) 2414 { 2415 AcpiTableMcfg *mcfg; 2416 const char *sig; 2417 int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]); 2418 2419 mcfg = acpi_data_push(table_data, len); 2420 mcfg->allocation[0].address = cpu_to_le64(info->mcfg_base); 2421 /* Only a single allocation so no need to play with segments */ 2422 mcfg->allocation[0].pci_segment = cpu_to_le16(0); 2423 mcfg->allocation[0].start_bus_number = 0; 2424 mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->mcfg_size - 1); 2425 2426 /* MCFG is used for ECAM which can be enabled or disabled by guest. 2427 * To avoid table size changes (which create migration issues), 2428 * always create the table even if there are no allocations, 2429 * but set the signature to a reserved value in this case. 2430 * ACPI spec requires OSPMs to ignore such tables. 2431 */ 2432 if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) { 2433 /* Reserved signature: ignored by OSPM */ 2434 sig = "QEMU"; 2435 } else { 2436 sig = "MCFG"; 2437 } 2438 build_header(linker, table_data, (void *)mcfg, sig, len, 1, NULL, NULL); 2439 } 2440 2441 /* 2442 * VT-d spec 8.1 DMA Remapping Reporting Structure 2443 * (version Oct. 2014 or later) 2444 */ 2445 static void 2446 build_dmar_q35(GArray *table_data, BIOSLinker *linker) 2447 { 2448 int dmar_start = table_data->len; 2449 2450 AcpiTableDmar *dmar; 2451 AcpiDmarHardwareUnit *drhd; 2452 AcpiDmarRootPortATS *atsr; 2453 uint8_t dmar_flags = 0; 2454 X86IOMMUState *iommu = x86_iommu_get_default(); 2455 AcpiDmarDeviceScope *scope = NULL; 2456 /* Root complex IOAPIC use one path[0] only */ 2457 size_t ioapic_scope_size = sizeof(*scope) + sizeof(scope->path[0]); 2458 IntelIOMMUState *intel_iommu = INTEL_IOMMU_DEVICE(iommu); 2459 2460 assert(iommu); 2461 if (x86_iommu_ir_supported(iommu)) { 2462 dmar_flags |= 0x1; /* Flags: 0x1: INT_REMAP */ 2463 } 2464 2465 dmar = acpi_data_push(table_data, sizeof(*dmar)); 2466 dmar->host_address_width = intel_iommu->aw_bits - 1; 2467 dmar->flags = dmar_flags; 2468 2469 /* DMAR Remapping Hardware Unit Definition structure */ 2470 drhd = acpi_data_push(table_data, sizeof(*drhd) + ioapic_scope_size); 2471 drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT); 2472 drhd->length = cpu_to_le16(sizeof(*drhd) + ioapic_scope_size); 2473 drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL; 2474 drhd->pci_segment = cpu_to_le16(0); 2475 drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR); 2476 2477 /* Scope definition for the root-complex IOAPIC. See VT-d spec 2478 * 8.3.1 (version Oct. 2014 or later). */ 2479 scope = &drhd->scope[0]; 2480 scope->entry_type = 0x03; /* Type: 0x03 for IOAPIC */ 2481 scope->length = ioapic_scope_size; 2482 scope->enumeration_id = ACPI_BUILD_IOAPIC_ID; 2483 scope->bus = Q35_PSEUDO_BUS_PLATFORM; 2484 scope->path[0].device = PCI_SLOT(Q35_PSEUDO_DEVFN_IOAPIC); 2485 scope->path[0].function = PCI_FUNC(Q35_PSEUDO_DEVFN_IOAPIC); 2486 2487 if (iommu->dt_supported) { 2488 atsr = acpi_data_push(table_data, sizeof(*atsr)); 2489 atsr->type = cpu_to_le16(ACPI_DMAR_TYPE_ATSR); 2490 atsr->length = cpu_to_le16(sizeof(*atsr)); 2491 atsr->flags = ACPI_DMAR_ATSR_ALL_PORTS; 2492 atsr->pci_segment = cpu_to_le16(0); 2493 } 2494 2495 build_header(linker, table_data, (void *)(table_data->data + dmar_start), 2496 "DMAR", table_data->len - dmar_start, 1, NULL, NULL); 2497 } 2498 /* 2499 * IVRS table as specified in AMD IOMMU Specification v2.62, Section 5.2 2500 * accessible here http://support.amd.com/TechDocs/48882_IOMMU.pdf 2501 */ 2502 #define IOAPIC_SB_DEVID (uint64_t)PCI_BUILD_BDF(0, PCI_DEVFN(0x14, 0)) 2503 2504 static void 2505 build_amd_iommu(GArray *table_data, BIOSLinker *linker) 2506 { 2507 int ivhd_table_len = 28; 2508 int iommu_start = table_data->len; 2509 AMDVIState *s = AMD_IOMMU_DEVICE(x86_iommu_get_default()); 2510 2511 /* IVRS header */ 2512 acpi_data_push(table_data, sizeof(AcpiTableHeader)); 2513 /* IVinfo - IO virtualization information common to all 2514 * IOMMU units in a system 2515 */ 2516 build_append_int_noprefix(table_data, 40UL << 8/* PASize */, 4); 2517 /* reserved */ 2518 build_append_int_noprefix(table_data, 0, 8); 2519 2520 /* IVHD definition - type 10h */ 2521 build_append_int_noprefix(table_data, 0x10, 1); 2522 /* virtualization flags */ 2523 build_append_int_noprefix(table_data, 2524 (1UL << 0) | /* HtTunEn */ 2525 (1UL << 4) | /* iotblSup */ 2526 (1UL << 6) | /* PrefSup */ 2527 (1UL << 7), /* PPRSup */ 2528 1); 2529 2530 /* 2531 * When interrupt remapping is supported, we add a special IVHD device 2532 * for type IO-APIC. 2533 */ 2534 if (x86_iommu_ir_supported(x86_iommu_get_default())) { 2535 ivhd_table_len += 8; 2536 } 2537 /* IVHD length */ 2538 build_append_int_noprefix(table_data, ivhd_table_len, 2); 2539 /* DeviceID */ 2540 build_append_int_noprefix(table_data, s->devid, 2); 2541 /* Capability offset */ 2542 build_append_int_noprefix(table_data, s->capab_offset, 2); 2543 /* IOMMU base address */ 2544 build_append_int_noprefix(table_data, s->mmio.addr, 8); 2545 /* PCI Segment Group */ 2546 build_append_int_noprefix(table_data, 0, 2); 2547 /* IOMMU info */ 2548 build_append_int_noprefix(table_data, 0, 2); 2549 /* IOMMU Feature Reporting */ 2550 build_append_int_noprefix(table_data, 2551 (48UL << 30) | /* HATS */ 2552 (48UL << 28) | /* GATS */ 2553 (1UL << 2) | /* GTSup */ 2554 (1UL << 6), /* GASup */ 2555 4); 2556 /* 2557 * Type 1 device entry reporting all devices 2558 * These are 4-byte device entries currently reporting the range of 2559 * Refer to Spec - Table 95:IVHD Device Entry Type Codes(4-byte) 2560 */ 2561 build_append_int_noprefix(table_data, 0x0000001, 4); 2562 2563 /* 2564 * Add a special IVHD device type. 2565 * Refer to spec - Table 95: IVHD device entry type codes 2566 * 2567 * Linux IOMMU driver checks for the special IVHD device (type IO-APIC). 2568 * See Linux kernel commit 'c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059' 2569 */ 2570 if (x86_iommu_ir_supported(x86_iommu_get_default())) { 2571 build_append_int_noprefix(table_data, 2572 (0x1ull << 56) | /* type IOAPIC */ 2573 (IOAPIC_SB_DEVID << 40) | /* IOAPIC devid */ 2574 0x48, /* special device */ 2575 8); 2576 } 2577 2578 build_header(linker, table_data, (void *)(table_data->data + iommu_start), 2579 "IVRS", table_data->len - iommu_start, 1, NULL, NULL); 2580 } 2581 2582 typedef 2583 struct AcpiBuildState { 2584 /* Copy of table in RAM (for patching). */ 2585 MemoryRegion *table_mr; 2586 /* Is table patched? */ 2587 uint8_t patched; 2588 void *rsdp; 2589 MemoryRegion *rsdp_mr; 2590 MemoryRegion *linker_mr; 2591 } AcpiBuildState; 2592 2593 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg) 2594 { 2595 Object *pci_host; 2596 QObject *o; 2597 2598 pci_host = acpi_get_i386_pci_host(); 2599 g_assert(pci_host); 2600 2601 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL); 2602 if (!o) { 2603 return false; 2604 } 2605 mcfg->mcfg_base = qnum_get_uint(qobject_to(QNum, o)); 2606 qobject_unref(o); 2607 2608 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL); 2609 assert(o); 2610 mcfg->mcfg_size = qnum_get_uint(qobject_to(QNum, o)); 2611 qobject_unref(o); 2612 return true; 2613 } 2614 2615 static 2616 void acpi_build(AcpiBuildTables *tables, MachineState *machine) 2617 { 2618 PCMachineState *pcms = PC_MACHINE(machine); 2619 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); 2620 GArray *table_offsets; 2621 unsigned facs, dsdt, rsdt, fadt; 2622 AcpiPmInfo pm; 2623 AcpiMiscInfo misc; 2624 AcpiMcfgInfo mcfg; 2625 Range pci_hole, pci_hole64; 2626 uint8_t *u; 2627 size_t aml_len = 0; 2628 GArray *tables_blob = tables->table_data; 2629 AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL }; 2630 Object *vmgenid_dev; 2631 2632 acpi_get_pm_info(&pm); 2633 acpi_get_misc_info(&misc); 2634 acpi_get_pci_holes(&pci_hole, &pci_hole64); 2635 acpi_get_slic_oem(&slic_oem); 2636 2637 table_offsets = g_array_new(false, true /* clear */, 2638 sizeof(uint32_t)); 2639 ACPI_BUILD_DPRINTF("init ACPI tables\n"); 2640 2641 bios_linker_loader_alloc(tables->linker, 2642 ACPI_BUILD_TABLE_FILE, tables_blob, 2643 64 /* Ensure FACS is aligned */, 2644 false /* high memory */); 2645 2646 /* 2647 * FACS is pointed to by FADT. 2648 * We place it first since it's the only table that has alignment 2649 * requirements. 2650 */ 2651 facs = tables_blob->len; 2652 build_facs(tables_blob); 2653 2654 /* DSDT is pointed to by FADT */ 2655 dsdt = tables_blob->len; 2656 build_dsdt(tables_blob, tables->linker, &pm, &misc, 2657 &pci_hole, &pci_hole64, machine); 2658 2659 /* Count the size of the DSDT and SSDT, we will need it for legacy 2660 * sizing of ACPI tables. 2661 */ 2662 aml_len += tables_blob->len - dsdt; 2663 2664 /* ACPI tables pointed to by RSDT */ 2665 fadt = tables_blob->len; 2666 acpi_add_table(table_offsets, tables_blob); 2667 pm.fadt.facs_tbl_offset = &facs; 2668 pm.fadt.dsdt_tbl_offset = &dsdt; 2669 pm.fadt.xdsdt_tbl_offset = &dsdt; 2670 build_fadt(tables_blob, tables->linker, &pm.fadt, 2671 slic_oem.id, slic_oem.table_id); 2672 aml_len += tables_blob->len - fadt; 2673 2674 acpi_add_table(table_offsets, tables_blob); 2675 build_madt(tables_blob, tables->linker, pcms); 2676 2677 vmgenid_dev = find_vmgenid_dev(); 2678 if (vmgenid_dev) { 2679 acpi_add_table(table_offsets, tables_blob); 2680 vmgenid_build_acpi(VMGENID(vmgenid_dev), tables_blob, 2681 tables->vmgenid, tables->linker); 2682 } 2683 2684 if (misc.has_hpet) { 2685 acpi_add_table(table_offsets, tables_blob); 2686 build_hpet(tables_blob, tables->linker); 2687 } 2688 if (misc.tpm_version != TPM_VERSION_UNSPEC) { 2689 acpi_add_table(table_offsets, tables_blob); 2690 build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog); 2691 2692 if (misc.tpm_version == TPM_VERSION_2_0) { 2693 acpi_add_table(table_offsets, tables_blob); 2694 build_tpm2(tables_blob, tables->linker, tables->tcpalog); 2695 } 2696 } 2697 if (pcms->numa_nodes) { 2698 acpi_add_table(table_offsets, tables_blob); 2699 build_srat(tables_blob, tables->linker, machine); 2700 if (have_numa_distance) { 2701 acpi_add_table(table_offsets, tables_blob); 2702 build_slit(tables_blob, tables->linker); 2703 } 2704 } 2705 if (acpi_get_mcfg(&mcfg)) { 2706 acpi_add_table(table_offsets, tables_blob); 2707 build_mcfg_q35(tables_blob, tables->linker, &mcfg); 2708 } 2709 if (x86_iommu_get_default()) { 2710 IommuType IOMMUType = x86_iommu_get_type(); 2711 if (IOMMUType == TYPE_AMD) { 2712 acpi_add_table(table_offsets, tables_blob); 2713 build_amd_iommu(tables_blob, tables->linker); 2714 } else if (IOMMUType == TYPE_INTEL) { 2715 acpi_add_table(table_offsets, tables_blob); 2716 build_dmar_q35(tables_blob, tables->linker); 2717 } 2718 } 2719 if (machine->nvdimms_state->is_enabled) { 2720 nvdimm_build_acpi(table_offsets, tables_blob, tables->linker, 2721 machine->nvdimms_state, machine->ram_slots); 2722 } 2723 2724 /* Add tables supplied by user (if any) */ 2725 for (u = acpi_table_first(); u; u = acpi_table_next(u)) { 2726 unsigned len = acpi_table_len(u); 2727 2728 acpi_add_table(table_offsets, tables_blob); 2729 g_array_append_vals(tables_blob, u, len); 2730 } 2731 2732 /* RSDT is pointed to by RSDP */ 2733 rsdt = tables_blob->len; 2734 build_rsdt(tables_blob, tables->linker, table_offsets, 2735 slic_oem.id, slic_oem.table_id); 2736 2737 /* RSDP is in FSEG memory, so allocate it separately */ 2738 { 2739 AcpiRsdpData rsdp_data = { 2740 .revision = 0, 2741 .oem_id = ACPI_BUILD_APPNAME6, 2742 .xsdt_tbl_offset = NULL, 2743 .rsdt_tbl_offset = &rsdt, 2744 }; 2745 build_rsdp(tables->rsdp, tables->linker, &rsdp_data); 2746 if (!pcmc->rsdp_in_ram) { 2747 /* We used to allocate some extra space for RSDP revision 2 but 2748 * only used the RSDP revision 0 space. The extra bytes were 2749 * zeroed out and not used. 2750 * Here we continue wasting those extra 16 bytes to make sure we 2751 * don't break migration for machine types 2.2 and older due to 2752 * RSDP blob size mismatch. 2753 */ 2754 build_append_int_noprefix(tables->rsdp, 0, 16); 2755 } 2756 } 2757 2758 /* We'll expose it all to Guest so we want to reduce 2759 * chance of size changes. 2760 * 2761 * We used to align the tables to 4k, but of course this would 2762 * too simple to be enough. 4k turned out to be too small an 2763 * alignment very soon, and in fact it is almost impossible to 2764 * keep the table size stable for all (max_cpus, max_memory_slots) 2765 * combinations. So the table size is always 64k for pc-i440fx-2.1 2766 * and we give an error if the table grows beyond that limit. 2767 * 2768 * We still have the problem of migrating from "-M pc-i440fx-2.0". For 2769 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables 2770 * than 2.0 and we can always pad the smaller tables with zeros. We can 2771 * then use the exact size of the 2.0 tables. 2772 * 2773 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration. 2774 */ 2775 if (pcmc->legacy_acpi_table_size) { 2776 /* Subtracting aml_len gives the size of fixed tables. Then add the 2777 * size of the PIIX4 DSDT/SSDT in QEMU 2.0. 2778 */ 2779 int legacy_aml_len = 2780 pcmc->legacy_acpi_table_size + 2781 ACPI_BUILD_LEGACY_CPU_AML_SIZE * pcms->apic_id_limit; 2782 int legacy_table_size = 2783 ROUND_UP(tables_blob->len - aml_len + legacy_aml_len, 2784 ACPI_BUILD_ALIGN_SIZE); 2785 if (tables_blob->len > legacy_table_size) { 2786 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */ 2787 warn_report("ACPI table size %u exceeds %d bytes," 2788 " migration may not work", 2789 tables_blob->len, legacy_table_size); 2790 error_printf("Try removing CPUs, NUMA nodes, memory slots" 2791 " or PCI bridges."); 2792 } 2793 g_array_set_size(tables_blob, legacy_table_size); 2794 } else { 2795 /* Make sure we have a buffer in case we need to resize the tables. */ 2796 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) { 2797 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */ 2798 warn_report("ACPI table size %u exceeds %d bytes," 2799 " migration may not work", 2800 tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2); 2801 error_printf("Try removing CPUs, NUMA nodes, memory slots" 2802 " or PCI bridges."); 2803 } 2804 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); 2805 } 2806 2807 acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE); 2808 2809 /* Cleanup memory that's no longer used. */ 2810 g_array_free(table_offsets, true); 2811 } 2812 2813 static void acpi_ram_update(MemoryRegion *mr, GArray *data) 2814 { 2815 uint32_t size = acpi_data_len(data); 2816 2817 /* Make sure RAM size is correct - in case it got changed e.g. by migration */ 2818 memory_region_ram_resize(mr, size, &error_abort); 2819 2820 memcpy(memory_region_get_ram_ptr(mr), data->data, size); 2821 memory_region_set_dirty(mr, 0, size); 2822 } 2823 2824 static void acpi_build_update(void *build_opaque) 2825 { 2826 AcpiBuildState *build_state = build_opaque; 2827 AcpiBuildTables tables; 2828 2829 /* No state to update or already patched? Nothing to do. */ 2830 if (!build_state || build_state->patched) { 2831 return; 2832 } 2833 build_state->patched = 1; 2834 2835 acpi_build_tables_init(&tables); 2836 2837 acpi_build(&tables, MACHINE(qdev_get_machine())); 2838 2839 acpi_ram_update(build_state->table_mr, tables.table_data); 2840 2841 if (build_state->rsdp) { 2842 memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp)); 2843 } else { 2844 acpi_ram_update(build_state->rsdp_mr, tables.rsdp); 2845 } 2846 2847 acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); 2848 acpi_build_tables_cleanup(&tables, true); 2849 } 2850 2851 static void acpi_build_reset(void *build_opaque) 2852 { 2853 AcpiBuildState *build_state = build_opaque; 2854 build_state->patched = 0; 2855 } 2856 2857 static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state, 2858 GArray *blob, const char *name, 2859 uint64_t max_size) 2860 { 2861 return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1, 2862 name, acpi_build_update, build_state, NULL, true); 2863 } 2864 2865 static const VMStateDescription vmstate_acpi_build = { 2866 .name = "acpi_build", 2867 .version_id = 1, 2868 .minimum_version_id = 1, 2869 .fields = (VMStateField[]) { 2870 VMSTATE_UINT8(patched, AcpiBuildState), 2871 VMSTATE_END_OF_LIST() 2872 }, 2873 }; 2874 2875 void acpi_setup(void) 2876 { 2877 PCMachineState *pcms = PC_MACHINE(qdev_get_machine()); 2878 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); 2879 AcpiBuildTables tables; 2880 AcpiBuildState *build_state; 2881 Object *vmgenid_dev; 2882 TPMIf *tpm; 2883 static FwCfgTPMConfig tpm_config; 2884 2885 if (!pcms->fw_cfg) { 2886 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n"); 2887 return; 2888 } 2889 2890 if (!pcms->acpi_build_enabled) { 2891 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n"); 2892 return; 2893 } 2894 2895 if (!acpi_enabled) { 2896 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n"); 2897 return; 2898 } 2899 2900 build_state = g_malloc0(sizeof *build_state); 2901 2902 acpi_build_tables_init(&tables); 2903 acpi_build(&tables, MACHINE(pcms)); 2904 2905 /* Now expose it all to Guest */ 2906 build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data, 2907 ACPI_BUILD_TABLE_FILE, 2908 ACPI_BUILD_TABLE_MAX_SIZE); 2909 assert(build_state->table_mr != NULL); 2910 2911 build_state->linker_mr = 2912 acpi_add_rom_blob(build_state, tables.linker->cmd_blob, 2913 "etc/table-loader", 0); 2914 2915 fw_cfg_add_file(pcms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, 2916 tables.tcpalog->data, acpi_data_len(tables.tcpalog)); 2917 2918 tpm = tpm_find(); 2919 if (tpm && object_property_get_bool(OBJECT(tpm), "ppi", &error_abort)) { 2920 tpm_config = (FwCfgTPMConfig) { 2921 .tpmppi_address = cpu_to_le32(TPM_PPI_ADDR_BASE), 2922 .tpm_version = tpm_get_version(tpm), 2923 .tpmppi_version = TPM_PPI_VERSION_1_30 2924 }; 2925 fw_cfg_add_file(pcms->fw_cfg, "etc/tpm/config", 2926 &tpm_config, sizeof tpm_config); 2927 } 2928 2929 vmgenid_dev = find_vmgenid_dev(); 2930 if (vmgenid_dev) { 2931 vmgenid_add_fw_cfg(VMGENID(vmgenid_dev), pcms->fw_cfg, 2932 tables.vmgenid); 2933 } 2934 2935 if (!pcmc->rsdp_in_ram) { 2936 /* 2937 * Keep for compatibility with old machine types. 2938 * Though RSDP is small, its contents isn't immutable, so 2939 * we'll update it along with the rest of tables on guest access. 2940 */ 2941 uint32_t rsdp_size = acpi_data_len(tables.rsdp); 2942 2943 build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size); 2944 fw_cfg_add_file_callback(pcms->fw_cfg, ACPI_BUILD_RSDP_FILE, 2945 acpi_build_update, NULL, build_state, 2946 build_state->rsdp, rsdp_size, true); 2947 build_state->rsdp_mr = NULL; 2948 } else { 2949 build_state->rsdp = NULL; 2950 build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp, 2951 ACPI_BUILD_RSDP_FILE, 0); 2952 } 2953 2954 qemu_register_reset(acpi_build_reset, build_state); 2955 acpi_build_reset(build_state); 2956 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state); 2957 2958 /* Cleanup tables but don't free the memory: we track it 2959 * in build_state. 2960 */ 2961 acpi_build_tables_cleanup(&tables, false); 2962 } 2963