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 "acpi-build.h" 24 #include <stddef.h> 25 #include <glib.h> 26 #include "qemu-common.h" 27 #include "qemu/bitmap.h" 28 #include "qemu/osdep.h" 29 #include "qemu/error-report.h" 30 #include "hw/pci/pci.h" 31 #include "qom/cpu.h" 32 #include "hw/i386/pc.h" 33 #include "target-i386/cpu.h" 34 #include "hw/timer/hpet.h" 35 #include "hw/acpi/acpi-defs.h" 36 #include "hw/acpi/acpi.h" 37 #include "hw/nvram/fw_cfg.h" 38 #include "hw/acpi/bios-linker-loader.h" 39 #include "hw/loader.h" 40 #include "hw/isa/isa.h" 41 #include "hw/acpi/memory_hotplug.h" 42 #include "sysemu/tpm.h" 43 #include "hw/acpi/tpm.h" 44 #include "sysemu/tpm_backend.h" 45 46 /* Supported chipsets: */ 47 #include "hw/acpi/piix4.h" 48 #include "hw/acpi/pcihp.h" 49 #include "hw/i386/ich9.h" 50 #include "hw/pci/pci_bus.h" 51 #include "hw/pci-host/q35.h" 52 #include "hw/i386/intel_iommu.h" 53 54 #include "hw/i386/q35-acpi-dsdt.hex" 55 #include "hw/i386/acpi-dsdt.hex" 56 57 #include "hw/acpi/aml-build.h" 58 59 #include "qapi/qmp/qint.h" 60 #include "qom/qom-qobject.h" 61 62 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and 63 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows 64 * a little bit, there should be plenty of free space since the DSDT 65 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1. 66 */ 67 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97 68 #define ACPI_BUILD_ALIGN_SIZE 0x1000 69 70 #define ACPI_BUILD_TABLE_SIZE 0x20000 71 72 /* #define DEBUG_ACPI_BUILD */ 73 #ifdef DEBUG_ACPI_BUILD 74 #define ACPI_BUILD_DPRINTF(fmt, ...) \ 75 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0) 76 #else 77 #define ACPI_BUILD_DPRINTF(fmt, ...) 78 #endif 79 80 typedef struct AcpiCpuInfo { 81 DECLARE_BITMAP(found_cpus, ACPI_CPU_HOTPLUG_ID_LIMIT); 82 } AcpiCpuInfo; 83 84 typedef struct AcpiMcfgInfo { 85 uint64_t mcfg_base; 86 uint32_t mcfg_size; 87 } AcpiMcfgInfo; 88 89 typedef struct AcpiPmInfo { 90 bool s3_disabled; 91 bool s4_disabled; 92 bool pcihp_bridge_en; 93 uint8_t s4_val; 94 uint16_t sci_int; 95 uint8_t acpi_enable_cmd; 96 uint8_t acpi_disable_cmd; 97 uint32_t gpe0_blk; 98 uint32_t gpe0_blk_len; 99 uint32_t io_base; 100 uint16_t cpu_hp_io_base; 101 uint16_t cpu_hp_io_len; 102 uint16_t mem_hp_io_base; 103 uint16_t mem_hp_io_len; 104 uint16_t pcihp_io_base; 105 uint16_t pcihp_io_len; 106 } AcpiPmInfo; 107 108 typedef struct AcpiMiscInfo { 109 bool has_hpet; 110 TPMVersion tpm_version; 111 const unsigned char *dsdt_code; 112 unsigned dsdt_size; 113 uint16_t pvpanic_port; 114 uint16_t applesmc_io_base; 115 } AcpiMiscInfo; 116 117 typedef struct AcpiBuildPciBusHotplugState { 118 GArray *device_table; 119 GArray *notify_table; 120 struct AcpiBuildPciBusHotplugState *parent; 121 bool pcihp_bridge_en; 122 } AcpiBuildPciBusHotplugState; 123 124 static void acpi_get_dsdt(AcpiMiscInfo *info) 125 { 126 Object *piix = piix4_pm_find(); 127 Object *lpc = ich9_lpc_find(); 128 assert(!!piix != !!lpc); 129 130 if (piix) { 131 info->dsdt_code = AcpiDsdtAmlCode; 132 info->dsdt_size = sizeof AcpiDsdtAmlCode; 133 } 134 if (lpc) { 135 info->dsdt_code = Q35AcpiDsdtAmlCode; 136 info->dsdt_size = sizeof Q35AcpiDsdtAmlCode; 137 } 138 } 139 140 static 141 int acpi_add_cpu_info(Object *o, void *opaque) 142 { 143 AcpiCpuInfo *cpu = opaque; 144 uint64_t apic_id; 145 146 if (object_dynamic_cast(o, TYPE_CPU)) { 147 apic_id = object_property_get_int(o, "apic-id", NULL); 148 assert(apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT); 149 150 set_bit(apic_id, cpu->found_cpus); 151 } 152 153 object_child_foreach(o, acpi_add_cpu_info, opaque); 154 return 0; 155 } 156 157 static void acpi_get_cpu_info(AcpiCpuInfo *cpu) 158 { 159 Object *root = object_get_root(); 160 161 memset(cpu->found_cpus, 0, sizeof cpu->found_cpus); 162 object_child_foreach(root, acpi_add_cpu_info, cpu); 163 } 164 165 static void acpi_get_pm_info(AcpiPmInfo *pm) 166 { 167 Object *piix = piix4_pm_find(); 168 Object *lpc = ich9_lpc_find(); 169 Object *obj = NULL; 170 QObject *o; 171 172 pm->pcihp_io_base = 0; 173 pm->pcihp_io_len = 0; 174 if (piix) { 175 obj = piix; 176 pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE; 177 pm->pcihp_io_base = 178 object_property_get_int(obj, ACPI_PCIHP_IO_BASE_PROP, NULL); 179 pm->pcihp_io_len = 180 object_property_get_int(obj, ACPI_PCIHP_IO_LEN_PROP, NULL); 181 } 182 if (lpc) { 183 obj = lpc; 184 pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE; 185 } 186 assert(obj); 187 188 pm->cpu_hp_io_len = ACPI_GPE_PROC_LEN; 189 pm->mem_hp_io_base = ACPI_MEMORY_HOTPLUG_BASE; 190 pm->mem_hp_io_len = ACPI_MEMORY_HOTPLUG_IO_LEN; 191 192 /* Fill in optional s3/s4 related properties */ 193 o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL); 194 if (o) { 195 pm->s3_disabled = qint_get_int(qobject_to_qint(o)); 196 } else { 197 pm->s3_disabled = false; 198 } 199 qobject_decref(o); 200 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL); 201 if (o) { 202 pm->s4_disabled = qint_get_int(qobject_to_qint(o)); 203 } else { 204 pm->s4_disabled = false; 205 } 206 qobject_decref(o); 207 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL); 208 if (o) { 209 pm->s4_val = qint_get_int(qobject_to_qint(o)); 210 } else { 211 pm->s4_val = false; 212 } 213 qobject_decref(o); 214 215 /* Fill in mandatory properties */ 216 pm->sci_int = object_property_get_int(obj, ACPI_PM_PROP_SCI_INT, NULL); 217 218 pm->acpi_enable_cmd = object_property_get_int(obj, 219 ACPI_PM_PROP_ACPI_ENABLE_CMD, 220 NULL); 221 pm->acpi_disable_cmd = object_property_get_int(obj, 222 ACPI_PM_PROP_ACPI_DISABLE_CMD, 223 NULL); 224 pm->io_base = object_property_get_int(obj, ACPI_PM_PROP_PM_IO_BASE, 225 NULL); 226 pm->gpe0_blk = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK, 227 NULL); 228 pm->gpe0_blk_len = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK_LEN, 229 NULL); 230 pm->pcihp_bridge_en = 231 object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support", 232 NULL); 233 } 234 235 static void acpi_get_misc_info(AcpiMiscInfo *info) 236 { 237 info->has_hpet = hpet_find(); 238 info->tpm_version = tpm_get_version(); 239 info->pvpanic_port = pvpanic_port(); 240 info->applesmc_io_base = applesmc_port(); 241 } 242 243 /* 244 * Because of the PXB hosts we cannot simply query TYPE_PCI_HOST_BRIDGE. 245 * On i386 arch we only have two pci hosts, so we can look only for them. 246 */ 247 static Object *acpi_get_i386_pci_host(void) 248 { 249 PCIHostState *host; 250 251 host = OBJECT_CHECK(PCIHostState, 252 object_resolve_path("/machine/i440fx", NULL), 253 TYPE_PCI_HOST_BRIDGE); 254 if (!host) { 255 host = OBJECT_CHECK(PCIHostState, 256 object_resolve_path("/machine/q35", NULL), 257 TYPE_PCI_HOST_BRIDGE); 258 } 259 260 return OBJECT(host); 261 } 262 263 static void acpi_get_pci_info(PcPciInfo *info) 264 { 265 Object *pci_host; 266 267 268 pci_host = acpi_get_i386_pci_host(); 269 g_assert(pci_host); 270 271 info->w32.begin = object_property_get_int(pci_host, 272 PCI_HOST_PROP_PCI_HOLE_START, 273 NULL); 274 info->w32.end = object_property_get_int(pci_host, 275 PCI_HOST_PROP_PCI_HOLE_END, 276 NULL); 277 info->w64.begin = object_property_get_int(pci_host, 278 PCI_HOST_PROP_PCI_HOLE64_START, 279 NULL); 280 info->w64.end = object_property_get_int(pci_host, 281 PCI_HOST_PROP_PCI_HOLE64_END, 282 NULL); 283 } 284 285 #define ACPI_PORT_SMI_CMD 0x00b2 /* TODO: this is APM_CNT_IOPORT */ 286 287 static void acpi_align_size(GArray *blob, unsigned align) 288 { 289 /* Align size to multiple of given size. This reduces the chance 290 * we need to change size in the future (breaking cross version migration). 291 */ 292 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); 293 } 294 295 /* FACS */ 296 static void 297 build_facs(GArray *table_data, GArray *linker, PcGuestInfo *guest_info) 298 { 299 AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs); 300 memcpy(&facs->signature, "FACS", 4); 301 facs->length = cpu_to_le32(sizeof(*facs)); 302 } 303 304 /* Load chipset information in FADT */ 305 static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm) 306 { 307 fadt->model = 1; 308 fadt->reserved1 = 0; 309 fadt->sci_int = cpu_to_le16(pm->sci_int); 310 fadt->smi_cmd = cpu_to_le32(ACPI_PORT_SMI_CMD); 311 fadt->acpi_enable = pm->acpi_enable_cmd; 312 fadt->acpi_disable = pm->acpi_disable_cmd; 313 /* EVT, CNT, TMR offset matches hw/acpi/core.c */ 314 fadt->pm1a_evt_blk = cpu_to_le32(pm->io_base); 315 fadt->pm1a_cnt_blk = cpu_to_le32(pm->io_base + 0x04); 316 fadt->pm_tmr_blk = cpu_to_le32(pm->io_base + 0x08); 317 fadt->gpe0_blk = cpu_to_le32(pm->gpe0_blk); 318 /* EVT, CNT, TMR length matches hw/acpi/core.c */ 319 fadt->pm1_evt_len = 4; 320 fadt->pm1_cnt_len = 2; 321 fadt->pm_tmr_len = 4; 322 fadt->gpe0_blk_len = pm->gpe0_blk_len; 323 fadt->plvl2_lat = cpu_to_le16(0xfff); /* C2 state not supported */ 324 fadt->plvl3_lat = cpu_to_le16(0xfff); /* C3 state not supported */ 325 fadt->flags = cpu_to_le32((1 << ACPI_FADT_F_WBINVD) | 326 (1 << ACPI_FADT_F_PROC_C1) | 327 (1 << ACPI_FADT_F_SLP_BUTTON) | 328 (1 << ACPI_FADT_F_RTC_S4)); 329 fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_USE_PLATFORM_CLOCK); 330 /* APIC destination mode ("Flat Logical") has an upper limit of 8 CPUs 331 * For more than 8 CPUs, "Clustered Logical" mode has to be used 332 */ 333 if (max_cpus > 8) { 334 fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL); 335 } 336 } 337 338 339 /* FADT */ 340 static void 341 build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm, 342 unsigned facs, unsigned dsdt) 343 { 344 AcpiFadtDescriptorRev1 *fadt = acpi_data_push(table_data, sizeof(*fadt)); 345 346 fadt->firmware_ctrl = cpu_to_le32(facs); 347 /* FACS address to be filled by Guest linker */ 348 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, 349 ACPI_BUILD_TABLE_FILE, 350 table_data, &fadt->firmware_ctrl, 351 sizeof fadt->firmware_ctrl); 352 353 fadt->dsdt = cpu_to_le32(dsdt); 354 /* DSDT address to be filled by Guest linker */ 355 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, 356 ACPI_BUILD_TABLE_FILE, 357 table_data, &fadt->dsdt, 358 sizeof fadt->dsdt); 359 360 fadt_setup(fadt, pm); 361 362 build_header(linker, table_data, 363 (void *)fadt, "FACP", sizeof(*fadt), 1); 364 } 365 366 static void 367 build_madt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu, 368 PcGuestInfo *guest_info) 369 { 370 int madt_start = table_data->len; 371 372 AcpiMultipleApicTable *madt; 373 AcpiMadtIoApic *io_apic; 374 AcpiMadtIntsrcovr *intsrcovr; 375 AcpiMadtLocalNmi *local_nmi; 376 int i; 377 378 madt = acpi_data_push(table_data, sizeof *madt); 379 madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS); 380 madt->flags = cpu_to_le32(1); 381 382 for (i = 0; i < guest_info->apic_id_limit; i++) { 383 AcpiMadtProcessorApic *apic = acpi_data_push(table_data, sizeof *apic); 384 apic->type = ACPI_APIC_PROCESSOR; 385 apic->length = sizeof(*apic); 386 apic->processor_id = i; 387 apic->local_apic_id = i; 388 if (test_bit(i, cpu->found_cpus)) { 389 apic->flags = cpu_to_le32(1); 390 } else { 391 apic->flags = cpu_to_le32(0); 392 } 393 } 394 io_apic = acpi_data_push(table_data, sizeof *io_apic); 395 io_apic->type = ACPI_APIC_IO; 396 io_apic->length = sizeof(*io_apic); 397 #define ACPI_BUILD_IOAPIC_ID 0x0 398 io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID; 399 io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS); 400 io_apic->interrupt = cpu_to_le32(0); 401 402 if (guest_info->apic_xrupt_override) { 403 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); 404 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; 405 intsrcovr->length = sizeof(*intsrcovr); 406 intsrcovr->source = 0; 407 intsrcovr->gsi = cpu_to_le32(2); 408 intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */ 409 } 410 for (i = 1; i < 16; i++) { 411 #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11)) 412 if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) { 413 /* No need for a INT source override structure. */ 414 continue; 415 } 416 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); 417 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; 418 intsrcovr->length = sizeof(*intsrcovr); 419 intsrcovr->source = i; 420 intsrcovr->gsi = cpu_to_le32(i); 421 intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */ 422 } 423 424 local_nmi = acpi_data_push(table_data, sizeof *local_nmi); 425 local_nmi->type = ACPI_APIC_LOCAL_NMI; 426 local_nmi->length = sizeof(*local_nmi); 427 local_nmi->processor_id = 0xff; /* all processors */ 428 local_nmi->flags = cpu_to_le16(0); 429 local_nmi->lint = 1; /* ACPI_LINT1 */ 430 431 build_header(linker, table_data, 432 (void *)(table_data->data + madt_start), "APIC", 433 table_data->len - madt_start, 1); 434 } 435 436 #include "hw/i386/ssdt-tpm.hex" 437 #include "hw/i386/ssdt-tpm2.hex" 438 439 /* Assign BSEL property to all buses. In the future, this can be changed 440 * to only assign to buses that support hotplug. 441 */ 442 static void *acpi_set_bsel(PCIBus *bus, void *opaque) 443 { 444 unsigned *bsel_alloc = opaque; 445 unsigned *bus_bsel; 446 447 if (qbus_is_hotpluggable(BUS(bus))) { 448 bus_bsel = g_malloc(sizeof *bus_bsel); 449 450 *bus_bsel = (*bsel_alloc)++; 451 object_property_add_uint32_ptr(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, 452 bus_bsel, NULL); 453 } 454 455 return bsel_alloc; 456 } 457 458 static void acpi_set_pci_info(void) 459 { 460 PCIBus *bus = find_i440fx(); /* TODO: Q35 support */ 461 unsigned bsel_alloc = 0; 462 463 if (bus) { 464 /* Scan all PCI buses. Set property to enable acpi based hotplug. */ 465 pci_for_each_bus_depth_first(bus, acpi_set_bsel, NULL, &bsel_alloc); 466 } 467 } 468 469 static void build_append_pcihp_notify_entry(Aml *method, int slot) 470 { 471 Aml *if_ctx; 472 int32_t devfn = PCI_DEVFN(slot, 0); 473 474 if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot))); 475 aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1))); 476 aml_append(method, if_ctx); 477 } 478 479 static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, 480 bool pcihp_bridge_en) 481 { 482 Aml *dev, *notify_method, *method; 483 QObject *bsel; 484 PCIBus *sec; 485 int i; 486 487 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL); 488 if (bsel) { 489 int64_t bsel_val = qint_get_int(qobject_to_qint(bsel)); 490 491 aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val))); 492 notify_method = aml_method("DVNT", 2); 493 } 494 495 for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) { 496 DeviceClass *dc; 497 PCIDeviceClass *pc; 498 PCIDevice *pdev = bus->devices[i]; 499 int slot = PCI_SLOT(i); 500 bool hotplug_enabled_dev; 501 bool bridge_in_acpi; 502 503 if (!pdev) { 504 if (bsel) { /* add hotplug slots for non present devices */ 505 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0)); 506 aml_append(dev, aml_name_decl("_SUN", aml_int(slot))); 507 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16))); 508 method = aml_method("_EJ0", 1); 509 aml_append(method, 510 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN")) 511 ); 512 aml_append(dev, method); 513 aml_append(parent_scope, dev); 514 515 build_append_pcihp_notify_entry(notify_method, slot); 516 } 517 continue; 518 } 519 520 pc = PCI_DEVICE_GET_CLASS(pdev); 521 dc = DEVICE_GET_CLASS(pdev); 522 523 /* When hotplug for bridges is enabled, bridges are 524 * described in ACPI separately (see build_pci_bus_end). 525 * In this case they aren't themselves hot-pluggable. 526 * Hotplugged bridges *are* hot-pluggable. 527 */ 528 bridge_in_acpi = pc->is_bridge && pcihp_bridge_en && 529 !DEVICE(pdev)->hotplugged; 530 531 hotplug_enabled_dev = bsel && dc->hotpluggable && !bridge_in_acpi; 532 533 if (pc->class_id == PCI_CLASS_BRIDGE_ISA) { 534 continue; 535 } 536 537 /* start to compose PCI slot descriptor */ 538 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0)); 539 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16))); 540 541 if (pc->class_id == PCI_CLASS_DISPLAY_VGA) { 542 /* add VGA specific AML methods */ 543 int s3d; 544 545 if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) { 546 s3d = 3; 547 } else { 548 s3d = 0; 549 } 550 551 method = aml_method("_S1D", 0); 552 aml_append(method, aml_return(aml_int(0))); 553 aml_append(dev, method); 554 555 method = aml_method("_S2D", 0); 556 aml_append(method, aml_return(aml_int(0))); 557 aml_append(dev, method); 558 559 method = aml_method("_S3D", 0); 560 aml_append(method, aml_return(aml_int(s3d))); 561 aml_append(dev, method); 562 } else if (hotplug_enabled_dev) { 563 /* add _SUN/_EJ0 to make slot hotpluggable */ 564 aml_append(dev, aml_name_decl("_SUN", aml_int(slot))); 565 566 method = aml_method("_EJ0", 1); 567 aml_append(method, 568 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN")) 569 ); 570 aml_append(dev, method); 571 572 if (bsel) { 573 build_append_pcihp_notify_entry(notify_method, slot); 574 } 575 } else if (bridge_in_acpi) { 576 /* 577 * device is coldplugged bridge, 578 * add child device descriptions into its scope 579 */ 580 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev)); 581 582 build_append_pci_bus_devices(dev, sec_bus, pcihp_bridge_en); 583 } 584 /* slot descriptor has been composed, add it into parent context */ 585 aml_append(parent_scope, dev); 586 } 587 588 if (bsel) { 589 aml_append(parent_scope, notify_method); 590 } 591 592 /* Append PCNT method to notify about events on local and child buses. 593 * Add unconditionally for root since DSDT expects it. 594 */ 595 method = aml_method("PCNT", 0); 596 597 /* If bus supports hotplug select it and notify about local events */ 598 if (bsel) { 599 int64_t bsel_val = qint_get_int(qobject_to_qint(bsel)); 600 aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM"))); 601 aml_append(method, 602 aml_call2("DVNT", aml_name("PCIU"), aml_int(1) /* Device Check */) 603 ); 604 aml_append(method, 605 aml_call2("DVNT", aml_name("PCID"), aml_int(3)/* Eject Request */) 606 ); 607 } 608 609 /* Notify about child bus events in any case */ 610 if (pcihp_bridge_en) { 611 QLIST_FOREACH(sec, &bus->child, sibling) { 612 int32_t devfn = sec->parent_dev->devfn; 613 614 aml_append(method, aml_name("^S%.02X.PCNT", devfn)); 615 } 616 } 617 aml_append(parent_scope, method); 618 } 619 620 /* 621 * initialize_route - Initialize the interrupt routing rule 622 * through a specific LINK: 623 * if (lnk_idx == idx) 624 * route using link 'link_name' 625 */ 626 static Aml *initialize_route(Aml *route, const char *link_name, 627 Aml *lnk_idx, int idx) 628 { 629 Aml *if_ctx = aml_if(aml_equal(lnk_idx, aml_int(idx))); 630 Aml *pkg = aml_package(4); 631 632 aml_append(pkg, aml_int(0)); 633 aml_append(pkg, aml_int(0)); 634 aml_append(pkg, aml_name("%s", link_name)); 635 aml_append(pkg, aml_int(0)); 636 aml_append(if_ctx, aml_store(pkg, route)); 637 638 return if_ctx; 639 } 640 641 /* 642 * build_prt - Define interrupt rounting rules 643 * 644 * Returns an array of 128 routes, one for each device, 645 * based on device location. 646 * The main goal is to equaly distribute the interrupts 647 * over the 4 existing ACPI links (works only for i440fx). 648 * The hash function is (slot + pin) & 3 -> "LNK[D|A|B|C]". 649 * 650 */ 651 static Aml *build_prt(void) 652 { 653 Aml *method, *while_ctx, *pin, *res; 654 655 method = aml_method("_PRT", 0); 656 res = aml_local(0); 657 pin = aml_local(1); 658 aml_append(method, aml_store(aml_package(128), res)); 659 aml_append(method, aml_store(aml_int(0), pin)); 660 661 /* while (pin < 128) */ 662 while_ctx = aml_while(aml_lless(pin, aml_int(128))); 663 { 664 Aml *slot = aml_local(2); 665 Aml *lnk_idx = aml_local(3); 666 Aml *route = aml_local(4); 667 668 /* slot = pin >> 2 */ 669 aml_append(while_ctx, 670 aml_store(aml_shiftright(pin, aml_int(2)), slot)); 671 /* lnk_idx = (slot + pin) & 3 */ 672 aml_append(while_ctx, 673 aml_store(aml_and(aml_add(pin, slot), aml_int(3)), lnk_idx)); 674 675 /* route[2] = "LNK[D|A|B|C]", selection based on pin % 3 */ 676 aml_append(while_ctx, initialize_route(route, "LNKD", lnk_idx, 0)); 677 aml_append(while_ctx, initialize_route(route, "LNKA", lnk_idx, 1)); 678 aml_append(while_ctx, initialize_route(route, "LNKB", lnk_idx, 2)); 679 aml_append(while_ctx, initialize_route(route, "LNKC", lnk_idx, 3)); 680 681 /* route[0] = 0x[slot]FFFF */ 682 aml_append(while_ctx, 683 aml_store(aml_or(aml_shiftleft(slot, aml_int(16)), aml_int(0xFFFF)), 684 aml_index(route, aml_int(0)))); 685 /* route[1] = pin & 3 */ 686 aml_append(while_ctx, 687 aml_store(aml_and(pin, aml_int(3)), aml_index(route, aml_int(1)))); 688 /* res[pin] = route */ 689 aml_append(while_ctx, aml_store(route, aml_index(res, pin))); 690 /* pin++ */ 691 aml_append(while_ctx, aml_increment(pin)); 692 } 693 aml_append(method, while_ctx); 694 /* return res*/ 695 aml_append(method, aml_return(res)); 696 697 return method; 698 } 699 700 typedef struct CrsRangeEntry { 701 uint64_t base; 702 uint64_t limit; 703 } CrsRangeEntry; 704 705 static void crs_range_insert(GPtrArray *ranges, uint64_t base, uint64_t limit) 706 { 707 CrsRangeEntry *entry; 708 709 entry = g_malloc(sizeof(*entry)); 710 entry->base = base; 711 entry->limit = limit; 712 713 g_ptr_array_add(ranges, entry); 714 } 715 716 static void crs_range_free(gpointer data) 717 { 718 CrsRangeEntry *entry = (CrsRangeEntry *)data; 719 g_free(entry); 720 } 721 722 static gint crs_range_compare(gconstpointer a, gconstpointer b) 723 { 724 CrsRangeEntry *entry_a = *(CrsRangeEntry **)a; 725 CrsRangeEntry *entry_b = *(CrsRangeEntry **)b; 726 727 return (int64_t)entry_a->base - (int64_t)entry_b->base; 728 } 729 730 /* 731 * crs_replace_with_free_ranges - given the 'used' ranges within [start - end] 732 * interval, computes the 'free' ranges from the same interval. 733 * Example: If the input array is { [a1 - a2],[b1 - b2] }, the function 734 * will return { [base - a1], [a2 - b1], [b2 - limit] }. 735 */ 736 static void crs_replace_with_free_ranges(GPtrArray *ranges, 737 uint64_t start, uint64_t end) 738 { 739 GPtrArray *free_ranges = g_ptr_array_new_with_free_func(crs_range_free); 740 uint64_t free_base = start; 741 int i; 742 743 g_ptr_array_sort(ranges, crs_range_compare); 744 for (i = 0; i < ranges->len; i++) { 745 CrsRangeEntry *used = g_ptr_array_index(ranges, i); 746 747 if (free_base < used->base) { 748 crs_range_insert(free_ranges, free_base, used->base - 1); 749 } 750 751 free_base = used->limit + 1; 752 } 753 754 if (free_base < end) { 755 crs_range_insert(free_ranges, free_base, end); 756 } 757 758 g_ptr_array_set_size(ranges, 0); 759 for (i = 0; i < free_ranges->len; i++) { 760 g_ptr_array_add(ranges, g_ptr_array_index(free_ranges, i)); 761 } 762 763 g_ptr_array_free(free_ranges, false); 764 } 765 766 static Aml *build_crs(PCIHostState *host, 767 GPtrArray *io_ranges, GPtrArray *mem_ranges) 768 { 769 Aml *crs = aml_resource_template(); 770 uint8_t max_bus = pci_bus_num(host->bus); 771 uint8_t type; 772 int devfn; 773 774 for (devfn = 0; devfn < ARRAY_SIZE(host->bus->devices); devfn++) { 775 int i; 776 uint64_t range_base, range_limit; 777 PCIDevice *dev = host->bus->devices[devfn]; 778 779 if (!dev) { 780 continue; 781 } 782 783 for (i = 0; i < PCI_NUM_REGIONS; i++) { 784 PCIIORegion *r = &dev->io_regions[i]; 785 786 range_base = r->addr; 787 range_limit = r->addr + r->size - 1; 788 789 /* 790 * Work-around for old bioses 791 * that do not support multiple root buses 792 */ 793 if (!range_base || range_base > range_limit) { 794 continue; 795 } 796 797 if (r->type & PCI_BASE_ADDRESS_SPACE_IO) { 798 aml_append(crs, 799 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 800 AML_POS_DECODE, AML_ENTIRE_RANGE, 801 0, 802 range_base, 803 range_limit, 804 0, 805 range_limit - range_base + 1)); 806 crs_range_insert(io_ranges, range_base, range_limit); 807 } else { /* "memory" */ 808 aml_append(crs, 809 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, 810 AML_MAX_FIXED, AML_NON_CACHEABLE, 811 AML_READ_WRITE, 812 0, 813 range_base, 814 range_limit, 815 0, 816 range_limit - range_base + 1)); 817 crs_range_insert(mem_ranges, range_base, range_limit); 818 } 819 } 820 821 type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; 822 if (type == PCI_HEADER_TYPE_BRIDGE) { 823 uint8_t subordinate = dev->config[PCI_SUBORDINATE_BUS]; 824 if (subordinate > max_bus) { 825 max_bus = subordinate; 826 } 827 828 range_base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO); 829 range_limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO); 830 831 /* 832 * Work-around for old bioses 833 * that do not support multiple root buses 834 */ 835 if (range_base && range_base <= range_limit) { 836 aml_append(crs, 837 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 838 AML_POS_DECODE, AML_ENTIRE_RANGE, 839 0, 840 range_base, 841 range_limit, 842 0, 843 range_limit - range_base + 1)); 844 crs_range_insert(io_ranges, range_base, range_limit); 845 } 846 847 range_base = 848 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); 849 range_limit = 850 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); 851 852 /* 853 * Work-around for old bioses 854 * that do not support multiple root buses 855 */ 856 if (range_base && range_base <= range_limit) { 857 aml_append(crs, 858 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, 859 AML_MAX_FIXED, AML_NON_CACHEABLE, 860 AML_READ_WRITE, 861 0, 862 range_base, 863 range_limit, 864 0, 865 range_limit - range_base + 1)); 866 crs_range_insert(mem_ranges, range_base, range_limit); 867 } 868 869 range_base = 870 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); 871 range_limit = 872 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); 873 874 /* 875 * Work-around for old bioses 876 * that do not support multiple root buses 877 */ 878 if (range_base && range_base <= range_limit) { 879 aml_append(crs, 880 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, 881 AML_MAX_FIXED, AML_NON_CACHEABLE, 882 AML_READ_WRITE, 883 0, 884 range_base, 885 range_limit, 886 0, 887 range_limit - range_base + 1)); 888 crs_range_insert(mem_ranges, range_base, range_limit); 889 } 890 } 891 } 892 893 aml_append(crs, 894 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, 895 0, 896 pci_bus_num(host->bus), 897 max_bus, 898 0, 899 max_bus - pci_bus_num(host->bus) + 1)); 900 901 return crs; 902 } 903 904 static void 905 build_ssdt(GArray *table_data, GArray *linker, 906 AcpiCpuInfo *cpu, AcpiPmInfo *pm, AcpiMiscInfo *misc, 907 PcPciInfo *pci, PcGuestInfo *guest_info) 908 { 909 MachineState *machine = MACHINE(qdev_get_machine()); 910 uint32_t nr_mem = machine->ram_slots; 911 unsigned acpi_cpus = guest_info->apic_id_limit; 912 Aml *ssdt, *sb_scope, *scope, *pkg, *dev, *method, *crs, *field, *ifctx; 913 PCIBus *bus = NULL; 914 GPtrArray *io_ranges = g_ptr_array_new_with_free_func(crs_range_free); 915 GPtrArray *mem_ranges = g_ptr_array_new_with_free_func(crs_range_free); 916 CrsRangeEntry *entry; 917 int root_bus_limit = 0xFF; 918 int i; 919 920 ssdt = init_aml_allocator(); 921 /* The current AML generator can cover the APIC ID range [0..255], 922 * inclusive, for VCPU hotplug. */ 923 QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256); 924 g_assert(acpi_cpus <= ACPI_CPU_HOTPLUG_ID_LIMIT); 925 926 /* Reserve space for header */ 927 acpi_data_push(ssdt->buf, sizeof(AcpiTableHeader)); 928 929 /* Extra PCI root buses are implemented only for i440fx */ 930 bus = find_i440fx(); 931 if (bus) { 932 QLIST_FOREACH(bus, &bus->child, sibling) { 933 uint8_t bus_num = pci_bus_num(bus); 934 uint8_t numa_node = pci_bus_numa_node(bus); 935 936 /* look only for expander root buses */ 937 if (!pci_bus_is_root(bus)) { 938 continue; 939 } 940 941 if (bus_num < root_bus_limit) { 942 root_bus_limit = bus_num - 1; 943 } 944 945 scope = aml_scope("\\_SB"); 946 dev = aml_device("PC%.02X", bus_num); 947 aml_append(dev, aml_name_decl("_UID", aml_int(bus_num))); 948 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); 949 aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); 950 951 if (numa_node != NUMA_NODE_UNASSIGNED) { 952 aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node))); 953 } 954 955 aml_append(dev, build_prt()); 956 crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), 957 io_ranges, mem_ranges); 958 aml_append(dev, aml_name_decl("_CRS", crs)); 959 aml_append(scope, dev); 960 aml_append(ssdt, scope); 961 } 962 } 963 964 scope = aml_scope("\\_SB.PCI0"); 965 /* build PCI0._CRS */ 966 crs = aml_resource_template(); 967 aml_append(crs, 968 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, 969 0x0000, 0x0, root_bus_limit, 970 0x0000, root_bus_limit + 1)); 971 aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08)); 972 973 aml_append(crs, 974 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 975 AML_POS_DECODE, AML_ENTIRE_RANGE, 976 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8)); 977 978 crs_replace_with_free_ranges(io_ranges, 0x0D00, 0xFFFF); 979 for (i = 0; i < io_ranges->len; i++) { 980 entry = g_ptr_array_index(io_ranges, i); 981 aml_append(crs, 982 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 983 AML_POS_DECODE, AML_ENTIRE_RANGE, 984 0x0000, entry->base, entry->limit, 985 0x0000, entry->limit - entry->base + 1)); 986 } 987 988 aml_append(crs, 989 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 990 AML_CACHEABLE, AML_READ_WRITE, 991 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000)); 992 993 crs_replace_with_free_ranges(mem_ranges, pci->w32.begin, pci->w32.end - 1); 994 for (i = 0; i < mem_ranges->len; i++) { 995 entry = g_ptr_array_index(mem_ranges, i); 996 aml_append(crs, 997 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 998 AML_NON_CACHEABLE, AML_READ_WRITE, 999 0, entry->base, entry->limit, 1000 0, entry->limit - entry->base + 1)); 1001 } 1002 1003 if (pci->w64.begin) { 1004 aml_append(crs, 1005 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 1006 AML_CACHEABLE, AML_READ_WRITE, 1007 0, pci->w64.begin, pci->w64.end - 1, 0, 1008 pci->w64.end - pci->w64.begin)); 1009 } 1010 aml_append(scope, aml_name_decl("_CRS", crs)); 1011 1012 /* reserve GPE0 block resources */ 1013 dev = aml_device("GPE0"); 1014 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 1015 aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources"))); 1016 /* device present, functioning, decoding, not shown in UI */ 1017 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 1018 crs = aml_resource_template(); 1019 aml_append(crs, 1020 aml_io(AML_DECODE16, pm->gpe0_blk, pm->gpe0_blk, 1, pm->gpe0_blk_len) 1021 ); 1022 aml_append(dev, aml_name_decl("_CRS", crs)); 1023 aml_append(scope, dev); 1024 1025 g_ptr_array_free(io_ranges, true); 1026 g_ptr_array_free(mem_ranges, true); 1027 1028 /* reserve PCIHP resources */ 1029 if (pm->pcihp_io_len) { 1030 dev = aml_device("PHPR"); 1031 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 1032 aml_append(dev, 1033 aml_name_decl("_UID", aml_string("PCI Hotplug resources"))); 1034 /* device present, functioning, decoding, not shown in UI */ 1035 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 1036 crs = aml_resource_template(); 1037 aml_append(crs, 1038 aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1, 1039 pm->pcihp_io_len) 1040 ); 1041 aml_append(dev, aml_name_decl("_CRS", crs)); 1042 aml_append(scope, dev); 1043 } 1044 aml_append(ssdt, scope); 1045 1046 /* create S3_ / S4_ / S5_ packages if necessary */ 1047 scope = aml_scope("\\"); 1048 if (!pm->s3_disabled) { 1049 pkg = aml_package(4); 1050 aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */ 1051 aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ 1052 aml_append(pkg, aml_int(0)); /* reserved */ 1053 aml_append(pkg, aml_int(0)); /* reserved */ 1054 aml_append(scope, aml_name_decl("_S3", pkg)); 1055 } 1056 1057 if (!pm->s4_disabled) { 1058 pkg = aml_package(4); 1059 aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */ 1060 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ 1061 aml_append(pkg, aml_int(pm->s4_val)); 1062 aml_append(pkg, aml_int(0)); /* reserved */ 1063 aml_append(pkg, aml_int(0)); /* reserved */ 1064 aml_append(scope, aml_name_decl("_S4", pkg)); 1065 } 1066 1067 pkg = aml_package(4); 1068 aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */ 1069 aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */ 1070 aml_append(pkg, aml_int(0)); /* reserved */ 1071 aml_append(pkg, aml_int(0)); /* reserved */ 1072 aml_append(scope, aml_name_decl("_S5", pkg)); 1073 aml_append(ssdt, scope); 1074 1075 if (misc->applesmc_io_base) { 1076 scope = aml_scope("\\_SB.PCI0.ISA"); 1077 dev = aml_device("SMC"); 1078 1079 aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0001"))); 1080 /* device present, functioning, decoding, not shown in UI */ 1081 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 1082 1083 crs = aml_resource_template(); 1084 aml_append(crs, 1085 aml_io(AML_DECODE16, misc->applesmc_io_base, misc->applesmc_io_base, 1086 0x01, APPLESMC_MAX_DATA_LENGTH) 1087 ); 1088 aml_append(crs, aml_irq_no_flags(6)); 1089 aml_append(dev, aml_name_decl("_CRS", crs)); 1090 1091 aml_append(scope, dev); 1092 aml_append(ssdt, scope); 1093 } 1094 1095 if (misc->pvpanic_port) { 1096 scope = aml_scope("\\_SB.PCI0.ISA"); 1097 1098 dev = aml_device("PEVT"); 1099 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0001"))); 1100 1101 crs = aml_resource_template(); 1102 aml_append(crs, 1103 aml_io(AML_DECODE16, misc->pvpanic_port, misc->pvpanic_port, 1, 1) 1104 ); 1105 aml_append(dev, aml_name_decl("_CRS", crs)); 1106 1107 aml_append(dev, aml_operation_region("PEOR", AML_SYSTEM_IO, 1108 misc->pvpanic_port, 1)); 1109 field = aml_field("PEOR", AML_BYTE_ACC, AML_PRESERVE); 1110 aml_append(field, aml_named_field("PEPT", 8)); 1111 aml_append(dev, field); 1112 1113 /* device present, functioning, decoding, not shown in UI */ 1114 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 1115 1116 method = aml_method("RDPT", 0); 1117 aml_append(method, aml_store(aml_name("PEPT"), aml_local(0))); 1118 aml_append(method, aml_return(aml_local(0))); 1119 aml_append(dev, method); 1120 1121 method = aml_method("WRPT", 1); 1122 aml_append(method, aml_store(aml_arg(0), aml_name("PEPT"))); 1123 aml_append(dev, method); 1124 1125 aml_append(scope, dev); 1126 aml_append(ssdt, scope); 1127 } 1128 1129 sb_scope = aml_scope("\\_SB"); 1130 { 1131 /* create PCI0.PRES device and its _CRS to reserve CPU hotplug MMIO */ 1132 dev = aml_device("PCI0." stringify(CPU_HOTPLUG_RESOURCE_DEVICE)); 1133 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06"))); 1134 aml_append(dev, 1135 aml_name_decl("_UID", aml_string("CPU Hotplug resources")) 1136 ); 1137 /* device present, functioning, decoding, not shown in UI */ 1138 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 1139 crs = aml_resource_template(); 1140 aml_append(crs, 1141 aml_io(AML_DECODE16, pm->cpu_hp_io_base, pm->cpu_hp_io_base, 1, 1142 pm->cpu_hp_io_len) 1143 ); 1144 aml_append(dev, aml_name_decl("_CRS", crs)); 1145 aml_append(sb_scope, dev); 1146 /* declare CPU hotplug MMIO region and PRS field to access it */ 1147 aml_append(sb_scope, aml_operation_region( 1148 "PRST", AML_SYSTEM_IO, pm->cpu_hp_io_base, pm->cpu_hp_io_len)); 1149 field = aml_field("PRST", AML_BYTE_ACC, AML_PRESERVE); 1150 aml_append(field, aml_named_field("PRS", 256)); 1151 aml_append(sb_scope, field); 1152 1153 /* build Processor object for each processor */ 1154 for (i = 0; i < acpi_cpus; i++) { 1155 dev = aml_processor(i, 0, 0, "CP%.02X", i); 1156 1157 method = aml_method("_MAT", 0); 1158 aml_append(method, aml_return(aml_call1("CPMA", aml_int(i)))); 1159 aml_append(dev, method); 1160 1161 method = aml_method("_STA", 0); 1162 aml_append(method, aml_return(aml_call1("CPST", aml_int(i)))); 1163 aml_append(dev, method); 1164 1165 method = aml_method("_EJ0", 1); 1166 aml_append(method, 1167 aml_return(aml_call2("CPEJ", aml_int(i), aml_arg(0))) 1168 ); 1169 aml_append(dev, method); 1170 1171 aml_append(sb_scope, dev); 1172 } 1173 1174 /* build this code: 1175 * Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...} 1176 */ 1177 /* Arg0 = Processor ID = APIC ID */ 1178 method = aml_method("NTFY", 2); 1179 for (i = 0; i < acpi_cpus; i++) { 1180 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i))); 1181 aml_append(ifctx, 1182 aml_notify(aml_name("CP%.02X", i), aml_arg(1)) 1183 ); 1184 aml_append(method, ifctx); 1185 } 1186 aml_append(sb_scope, method); 1187 1188 /* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })" 1189 * 1190 * Note: The ability to create variable-sized packages was first 1191 * introduced in ACPI 2.0. ACPI 1.0 only allowed fixed-size packages 1192 * ith up to 255 elements. Windows guests up to win2k8 fail when 1193 * VarPackageOp is used. 1194 */ 1195 pkg = acpi_cpus <= 255 ? aml_package(acpi_cpus) : 1196 aml_varpackage(acpi_cpus); 1197 1198 for (i = 0; i < acpi_cpus; i++) { 1199 uint8_t b = test_bit(i, cpu->found_cpus) ? 0x01 : 0x00; 1200 aml_append(pkg, aml_int(b)); 1201 } 1202 aml_append(sb_scope, aml_name_decl("CPON", pkg)); 1203 1204 /* build memory devices */ 1205 assert(nr_mem <= ACPI_MAX_RAM_SLOTS); 1206 scope = aml_scope("\\_SB.PCI0." stringify(MEMORY_HOTPLUG_DEVICE)); 1207 aml_append(scope, 1208 aml_name_decl(stringify(MEMORY_SLOTS_NUMBER), aml_int(nr_mem)) 1209 ); 1210 1211 crs = aml_resource_template(); 1212 aml_append(crs, 1213 aml_io(AML_DECODE16, pm->mem_hp_io_base, pm->mem_hp_io_base, 0, 1214 pm->mem_hp_io_len) 1215 ); 1216 aml_append(scope, aml_name_decl("_CRS", crs)); 1217 1218 aml_append(scope, aml_operation_region( 1219 stringify(MEMORY_HOTPLUG_IO_REGION), AML_SYSTEM_IO, 1220 pm->mem_hp_io_base, pm->mem_hp_io_len) 1221 ); 1222 1223 field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), AML_DWORD_ACC, 1224 AML_PRESERVE); 1225 aml_append(field, /* read only */ 1226 aml_named_field(stringify(MEMORY_SLOT_ADDR_LOW), 32)); 1227 aml_append(field, /* read only */ 1228 aml_named_field(stringify(MEMORY_SLOT_ADDR_HIGH), 32)); 1229 aml_append(field, /* read only */ 1230 aml_named_field(stringify(MEMORY_SLOT_SIZE_LOW), 32)); 1231 aml_append(field, /* read only */ 1232 aml_named_field(stringify(MEMORY_SLOT_SIZE_HIGH), 32)); 1233 aml_append(field, /* read only */ 1234 aml_named_field(stringify(MEMORY_SLOT_PROXIMITY), 32)); 1235 aml_append(scope, field); 1236 1237 field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), AML_BYTE_ACC, 1238 AML_WRITE_AS_ZEROS); 1239 aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */)); 1240 aml_append(field, /* 1 if enabled, read only */ 1241 aml_named_field(stringify(MEMORY_SLOT_ENABLED), 1)); 1242 aml_append(field, 1243 /*(read) 1 if has a insert event. (write) 1 to clear event */ 1244 aml_named_field(stringify(MEMORY_SLOT_INSERT_EVENT), 1)); 1245 aml_append(field, 1246 /* (read) 1 if has a remove event. (write) 1 to clear event */ 1247 aml_named_field(stringify(MEMORY_SLOT_REMOVE_EVENT), 1)); 1248 aml_append(field, 1249 /* initiates device eject, write only */ 1250 aml_named_field(stringify(MEMORY_SLOT_EJECT), 1)); 1251 aml_append(scope, field); 1252 1253 field = aml_field(stringify(MEMORY_HOTPLUG_IO_REGION), AML_DWORD_ACC, 1254 AML_PRESERVE); 1255 aml_append(field, /* DIMM selector, write only */ 1256 aml_named_field(stringify(MEMORY_SLOT_SLECTOR), 32)); 1257 aml_append(field, /* _OST event code, write only */ 1258 aml_named_field(stringify(MEMORY_SLOT_OST_EVENT), 32)); 1259 aml_append(field, /* _OST status code, write only */ 1260 aml_named_field(stringify(MEMORY_SLOT_OST_STATUS), 32)); 1261 aml_append(scope, field); 1262 1263 aml_append(sb_scope, scope); 1264 1265 for (i = 0; i < nr_mem; i++) { 1266 #define BASEPATH "\\_SB.PCI0." stringify(MEMORY_HOTPLUG_DEVICE) "." 1267 const char *s; 1268 1269 dev = aml_device("MP%02X", i); 1270 aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i))); 1271 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80"))); 1272 1273 method = aml_method("_CRS", 0); 1274 s = BASEPATH stringify(MEMORY_SLOT_CRS_METHOD); 1275 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 1276 aml_append(dev, method); 1277 1278 method = aml_method("_STA", 0); 1279 s = BASEPATH stringify(MEMORY_SLOT_STATUS_METHOD); 1280 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 1281 aml_append(dev, method); 1282 1283 method = aml_method("_PXM", 0); 1284 s = BASEPATH stringify(MEMORY_SLOT_PROXIMITY_METHOD); 1285 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 1286 aml_append(dev, method); 1287 1288 method = aml_method("_OST", 3); 1289 s = BASEPATH stringify(MEMORY_SLOT_OST_METHOD); 1290 aml_append(method, aml_return(aml_call4( 1291 s, aml_name("_UID"), aml_arg(0), aml_arg(1), aml_arg(2) 1292 ))); 1293 aml_append(dev, method); 1294 1295 method = aml_method("_EJ0", 1); 1296 s = BASEPATH stringify(MEMORY_SLOT_EJECT_METHOD); 1297 aml_append(method, aml_return(aml_call2( 1298 s, aml_name("_UID"), aml_arg(0)))); 1299 aml_append(dev, method); 1300 1301 aml_append(sb_scope, dev); 1302 } 1303 1304 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) { 1305 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... } 1306 */ 1307 method = aml_method(stringify(MEMORY_SLOT_NOTIFY_METHOD), 2); 1308 for (i = 0; i < nr_mem; i++) { 1309 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i))); 1310 aml_append(ifctx, 1311 aml_notify(aml_name("MP%.02X", i), aml_arg(1)) 1312 ); 1313 aml_append(method, ifctx); 1314 } 1315 aml_append(sb_scope, method); 1316 1317 { 1318 Object *pci_host; 1319 PCIBus *bus = NULL; 1320 1321 pci_host = acpi_get_i386_pci_host(); 1322 if (pci_host) { 1323 bus = PCI_HOST_BRIDGE(pci_host)->bus; 1324 } 1325 1326 if (bus) { 1327 Aml *scope = aml_scope("PCI0"); 1328 /* Scan all PCI buses. Generate tables to support hotplug. */ 1329 build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en); 1330 aml_append(sb_scope, scope); 1331 } 1332 } 1333 aml_append(ssdt, sb_scope); 1334 } 1335 1336 /* copy AML table into ACPI tables blob and patch header there */ 1337 g_array_append_vals(table_data, ssdt->buf->data, ssdt->buf->len); 1338 build_header(linker, table_data, 1339 (void *)(table_data->data + table_data->len - ssdt->buf->len), 1340 "SSDT", ssdt->buf->len, 1); 1341 free_aml_allocator(); 1342 } 1343 1344 static void 1345 build_hpet(GArray *table_data, GArray *linker) 1346 { 1347 Acpi20Hpet *hpet; 1348 1349 hpet = acpi_data_push(table_data, sizeof(*hpet)); 1350 /* Note timer_block_id value must be kept in sync with value advertised by 1351 * emulated hpet 1352 */ 1353 hpet->timer_block_id = cpu_to_le32(0x8086a201); 1354 hpet->addr.address = cpu_to_le64(HPET_BASE); 1355 build_header(linker, table_data, 1356 (void *)hpet, "HPET", sizeof(*hpet), 1); 1357 } 1358 1359 static void 1360 build_tpm_tcpa(GArray *table_data, GArray *linker, GArray *tcpalog) 1361 { 1362 Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa); 1363 uint64_t log_area_start_address = acpi_data_len(tcpalog); 1364 1365 tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT); 1366 tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE); 1367 tcpa->log_area_start_address = cpu_to_le64(log_area_start_address); 1368 1369 bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, 1, 1370 false /* high memory */); 1371 1372 /* log area start address to be filled by Guest linker */ 1373 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, 1374 ACPI_BUILD_TPMLOG_FILE, 1375 table_data, &tcpa->log_area_start_address, 1376 sizeof(tcpa->log_area_start_address)); 1377 1378 build_header(linker, table_data, 1379 (void *)tcpa, "TCPA", sizeof(*tcpa), 2); 1380 1381 acpi_data_push(tcpalog, TPM_LOG_AREA_MINIMUM_SIZE); 1382 } 1383 1384 static void 1385 build_tpm_ssdt(GArray *table_data, GArray *linker) 1386 { 1387 void *tpm_ptr; 1388 1389 tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm_aml)); 1390 memcpy(tpm_ptr, ssdt_tpm_aml, sizeof(ssdt_tpm_aml)); 1391 } 1392 1393 static void 1394 build_tpm2(GArray *table_data, GArray *linker) 1395 { 1396 Acpi20TPM2 *tpm2_ptr; 1397 void *tpm_ptr; 1398 1399 tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm2_aml)); 1400 memcpy(tpm_ptr, ssdt_tpm2_aml, sizeof(ssdt_tpm2_aml)); 1401 1402 tpm2_ptr = acpi_data_push(table_data, sizeof *tpm2_ptr); 1403 1404 tpm2_ptr->platform_class = cpu_to_le16(TPM2_ACPI_CLASS_CLIENT); 1405 tpm2_ptr->control_area_address = cpu_to_le64(0); 1406 tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_MMIO); 1407 1408 build_header(linker, table_data, 1409 (void *)tpm2_ptr, "TPM2", sizeof(*tpm2_ptr), 4); 1410 } 1411 1412 typedef enum { 1413 MEM_AFFINITY_NOFLAGS = 0, 1414 MEM_AFFINITY_ENABLED = (1 << 0), 1415 MEM_AFFINITY_HOTPLUGGABLE = (1 << 1), 1416 MEM_AFFINITY_NON_VOLATILE = (1 << 2), 1417 } MemoryAffinityFlags; 1418 1419 static void 1420 acpi_build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base, 1421 uint64_t len, int node, MemoryAffinityFlags flags) 1422 { 1423 numamem->type = ACPI_SRAT_MEMORY; 1424 numamem->length = sizeof(*numamem); 1425 memset(numamem->proximity, 0, 4); 1426 numamem->proximity[0] = node; 1427 numamem->flags = cpu_to_le32(flags); 1428 numamem->base_addr = cpu_to_le64(base); 1429 numamem->range_length = cpu_to_le64(len); 1430 } 1431 1432 static void 1433 build_srat(GArray *table_data, GArray *linker, PcGuestInfo *guest_info) 1434 { 1435 AcpiSystemResourceAffinityTable *srat; 1436 AcpiSratProcessorAffinity *core; 1437 AcpiSratMemoryAffinity *numamem; 1438 1439 int i; 1440 uint64_t curnode; 1441 int srat_start, numa_start, slots; 1442 uint64_t mem_len, mem_base, next_base; 1443 PCMachineState *pcms = PC_MACHINE(qdev_get_machine()); 1444 ram_addr_t hotplugabble_address_space_size = 1445 object_property_get_int(OBJECT(pcms), PC_MACHINE_MEMHP_REGION_SIZE, 1446 NULL); 1447 1448 srat_start = table_data->len; 1449 1450 srat = acpi_data_push(table_data, sizeof *srat); 1451 srat->reserved1 = cpu_to_le32(1); 1452 core = (void *)(srat + 1); 1453 1454 for (i = 0; i < guest_info->apic_id_limit; ++i) { 1455 core = acpi_data_push(table_data, sizeof *core); 1456 core->type = ACPI_SRAT_PROCESSOR; 1457 core->length = sizeof(*core); 1458 core->local_apic_id = i; 1459 curnode = guest_info->node_cpu[i]; 1460 core->proximity_lo = curnode; 1461 memset(core->proximity_hi, 0, 3); 1462 core->local_sapic_eid = 0; 1463 core->flags = cpu_to_le32(1); 1464 } 1465 1466 1467 /* the memory map is a bit tricky, it contains at least one hole 1468 * from 640k-1M and possibly another one from 3.5G-4G. 1469 */ 1470 next_base = 0; 1471 numa_start = table_data->len; 1472 1473 numamem = acpi_data_push(table_data, sizeof *numamem); 1474 acpi_build_srat_memory(numamem, 0, 640*1024, 0, MEM_AFFINITY_ENABLED); 1475 next_base = 1024 * 1024; 1476 for (i = 1; i < guest_info->numa_nodes + 1; ++i) { 1477 mem_base = next_base; 1478 mem_len = guest_info->node_mem[i - 1]; 1479 if (i == 1) { 1480 mem_len -= 1024 * 1024; 1481 } 1482 next_base = mem_base + mem_len; 1483 1484 /* Cut out the ACPI_PCI hole */ 1485 if (mem_base <= guest_info->ram_size_below_4g && 1486 next_base > guest_info->ram_size_below_4g) { 1487 mem_len -= next_base - guest_info->ram_size_below_4g; 1488 if (mem_len > 0) { 1489 numamem = acpi_data_push(table_data, sizeof *numamem); 1490 acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1, 1491 MEM_AFFINITY_ENABLED); 1492 } 1493 mem_base = 1ULL << 32; 1494 mem_len = next_base - guest_info->ram_size_below_4g; 1495 next_base += (1ULL << 32) - guest_info->ram_size_below_4g; 1496 } 1497 numamem = acpi_data_push(table_data, sizeof *numamem); 1498 acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1, 1499 MEM_AFFINITY_ENABLED); 1500 } 1501 slots = (table_data->len - numa_start) / sizeof *numamem; 1502 for (; slots < guest_info->numa_nodes + 2; slots++) { 1503 numamem = acpi_data_push(table_data, sizeof *numamem); 1504 acpi_build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS); 1505 } 1506 1507 /* 1508 * Entry is required for Windows to enable memory hotplug in OS. 1509 * Memory devices may override proximity set by this entry, 1510 * providing _PXM method if necessary. 1511 */ 1512 if (hotplugabble_address_space_size) { 1513 numamem = acpi_data_push(table_data, sizeof *numamem); 1514 acpi_build_srat_memory(numamem, pcms->hotplug_memory_base, 1515 hotplugabble_address_space_size, 0, 1516 MEM_AFFINITY_HOTPLUGGABLE | 1517 MEM_AFFINITY_ENABLED); 1518 } 1519 1520 build_header(linker, table_data, 1521 (void *)(table_data->data + srat_start), 1522 "SRAT", 1523 table_data->len - srat_start, 1); 1524 } 1525 1526 static void 1527 build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info) 1528 { 1529 AcpiTableMcfg *mcfg; 1530 const char *sig; 1531 int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]); 1532 1533 mcfg = acpi_data_push(table_data, len); 1534 mcfg->allocation[0].address = cpu_to_le64(info->mcfg_base); 1535 /* Only a single allocation so no need to play with segments */ 1536 mcfg->allocation[0].pci_segment = cpu_to_le16(0); 1537 mcfg->allocation[0].start_bus_number = 0; 1538 mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->mcfg_size - 1); 1539 1540 /* MCFG is used for ECAM which can be enabled or disabled by guest. 1541 * To avoid table size changes (which create migration issues), 1542 * always create the table even if there are no allocations, 1543 * but set the signature to a reserved value in this case. 1544 * ACPI spec requires OSPMs to ignore such tables. 1545 */ 1546 if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) { 1547 /* Reserved signature: ignored by OSPM */ 1548 sig = "QEMU"; 1549 } else { 1550 sig = "MCFG"; 1551 } 1552 build_header(linker, table_data, (void *)mcfg, sig, len, 1); 1553 } 1554 1555 static void 1556 build_dmar_q35(GArray *table_data, GArray *linker) 1557 { 1558 int dmar_start = table_data->len; 1559 1560 AcpiTableDmar *dmar; 1561 AcpiDmarHardwareUnit *drhd; 1562 1563 dmar = acpi_data_push(table_data, sizeof(*dmar)); 1564 dmar->host_address_width = VTD_HOST_ADDRESS_WIDTH - 1; 1565 dmar->flags = 0; /* No intr_remap for now */ 1566 1567 /* DMAR Remapping Hardware Unit Definition structure */ 1568 drhd = acpi_data_push(table_data, sizeof(*drhd)); 1569 drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT); 1570 drhd->length = cpu_to_le16(sizeof(*drhd)); /* No device scope now */ 1571 drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL; 1572 drhd->pci_segment = cpu_to_le16(0); 1573 drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR); 1574 1575 build_header(linker, table_data, (void *)(table_data->data + dmar_start), 1576 "DMAR", table_data->len - dmar_start, 1); 1577 } 1578 1579 static void 1580 build_dsdt(GArray *table_data, GArray *linker, AcpiMiscInfo *misc) 1581 { 1582 AcpiTableHeader *dsdt; 1583 1584 assert(misc->dsdt_code && misc->dsdt_size); 1585 1586 dsdt = acpi_data_push(table_data, misc->dsdt_size); 1587 memcpy(dsdt, misc->dsdt_code, misc->dsdt_size); 1588 1589 memset(dsdt, 0, sizeof *dsdt); 1590 build_header(linker, table_data, dsdt, "DSDT", 1591 misc->dsdt_size, 1); 1592 } 1593 1594 static GArray * 1595 build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt) 1596 { 1597 AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp); 1598 1599 bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 16, 1600 true /* fseg memory */); 1601 1602 memcpy(&rsdp->signature, "RSD PTR ", 8); 1603 memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6); 1604 rsdp->rsdt_physical_address = cpu_to_le32(rsdt); 1605 /* Address to be filled by Guest linker */ 1606 bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE, 1607 ACPI_BUILD_TABLE_FILE, 1608 rsdp_table, &rsdp->rsdt_physical_address, 1609 sizeof rsdp->rsdt_physical_address); 1610 rsdp->checksum = 0; 1611 /* Checksum to be filled by Guest linker */ 1612 bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE, 1613 rsdp, rsdp, sizeof *rsdp, &rsdp->checksum); 1614 1615 return rsdp_table; 1616 } 1617 1618 typedef 1619 struct AcpiBuildState { 1620 /* Copy of table in RAM (for patching). */ 1621 MemoryRegion *table_mr; 1622 /* Is table patched? */ 1623 uint8_t patched; 1624 PcGuestInfo *guest_info; 1625 void *rsdp; 1626 MemoryRegion *rsdp_mr; 1627 MemoryRegion *linker_mr; 1628 } AcpiBuildState; 1629 1630 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg) 1631 { 1632 Object *pci_host; 1633 QObject *o; 1634 1635 pci_host = acpi_get_i386_pci_host(); 1636 g_assert(pci_host); 1637 1638 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL); 1639 if (!o) { 1640 return false; 1641 } 1642 mcfg->mcfg_base = qint_get_int(qobject_to_qint(o)); 1643 qobject_decref(o); 1644 1645 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL); 1646 assert(o); 1647 mcfg->mcfg_size = qint_get_int(qobject_to_qint(o)); 1648 qobject_decref(o); 1649 return true; 1650 } 1651 1652 static bool acpi_has_iommu(void) 1653 { 1654 bool ambiguous; 1655 Object *intel_iommu; 1656 1657 intel_iommu = object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE, 1658 &ambiguous); 1659 return intel_iommu && !ambiguous; 1660 } 1661 1662 static 1663 void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables) 1664 { 1665 GArray *table_offsets; 1666 unsigned facs, ssdt, dsdt, rsdt; 1667 AcpiCpuInfo cpu; 1668 AcpiPmInfo pm; 1669 AcpiMiscInfo misc; 1670 AcpiMcfgInfo mcfg; 1671 PcPciInfo pci; 1672 uint8_t *u; 1673 size_t aml_len = 0; 1674 GArray *tables_blob = tables->table_data; 1675 1676 acpi_get_cpu_info(&cpu); 1677 acpi_get_pm_info(&pm); 1678 acpi_get_dsdt(&misc); 1679 acpi_get_misc_info(&misc); 1680 acpi_get_pci_info(&pci); 1681 1682 table_offsets = g_array_new(false, true /* clear */, 1683 sizeof(uint32_t)); 1684 ACPI_BUILD_DPRINTF("init ACPI tables\n"); 1685 1686 bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE, 1687 64 /* Ensure FACS is aligned */, 1688 false /* high memory */); 1689 1690 /* 1691 * FACS is pointed to by FADT. 1692 * We place it first since it's the only table that has alignment 1693 * requirements. 1694 */ 1695 facs = tables_blob->len; 1696 build_facs(tables_blob, tables->linker, guest_info); 1697 1698 /* DSDT is pointed to by FADT */ 1699 dsdt = tables_blob->len; 1700 build_dsdt(tables_blob, tables->linker, &misc); 1701 1702 /* Count the size of the DSDT and SSDT, we will need it for legacy 1703 * sizing of ACPI tables. 1704 */ 1705 aml_len += tables_blob->len - dsdt; 1706 1707 /* ACPI tables pointed to by RSDT */ 1708 acpi_add_table(table_offsets, tables_blob); 1709 build_fadt(tables_blob, tables->linker, &pm, facs, dsdt); 1710 1711 ssdt = tables_blob->len; 1712 acpi_add_table(table_offsets, tables_blob); 1713 build_ssdt(tables_blob, tables->linker, &cpu, &pm, &misc, &pci, 1714 guest_info); 1715 aml_len += tables_blob->len - ssdt; 1716 1717 acpi_add_table(table_offsets, tables_blob); 1718 build_madt(tables_blob, tables->linker, &cpu, guest_info); 1719 1720 if (misc.has_hpet) { 1721 acpi_add_table(table_offsets, tables_blob); 1722 build_hpet(tables_blob, tables->linker); 1723 } 1724 if (misc.tpm_version != TPM_VERSION_UNSPEC) { 1725 acpi_add_table(table_offsets, tables_blob); 1726 build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog); 1727 1728 acpi_add_table(table_offsets, tables_blob); 1729 switch (misc.tpm_version) { 1730 case TPM_VERSION_1_2: 1731 build_tpm_ssdt(tables_blob, tables->linker); 1732 break; 1733 case TPM_VERSION_2_0: 1734 build_tpm2(tables_blob, tables->linker); 1735 break; 1736 default: 1737 assert(false); 1738 } 1739 } 1740 if (guest_info->numa_nodes) { 1741 acpi_add_table(table_offsets, tables_blob); 1742 build_srat(tables_blob, tables->linker, guest_info); 1743 } 1744 if (acpi_get_mcfg(&mcfg)) { 1745 acpi_add_table(table_offsets, tables_blob); 1746 build_mcfg_q35(tables_blob, tables->linker, &mcfg); 1747 } 1748 if (acpi_has_iommu()) { 1749 acpi_add_table(table_offsets, tables_blob); 1750 build_dmar_q35(tables_blob, tables->linker); 1751 } 1752 1753 /* Add tables supplied by user (if any) */ 1754 for (u = acpi_table_first(); u; u = acpi_table_next(u)) { 1755 unsigned len = acpi_table_len(u); 1756 1757 acpi_add_table(table_offsets, tables_blob); 1758 g_array_append_vals(tables_blob, u, len); 1759 } 1760 1761 /* RSDT is pointed to by RSDP */ 1762 rsdt = tables_blob->len; 1763 build_rsdt(tables_blob, tables->linker, table_offsets); 1764 1765 /* RSDP is in FSEG memory, so allocate it separately */ 1766 build_rsdp(tables->rsdp, tables->linker, rsdt); 1767 1768 /* We'll expose it all to Guest so we want to reduce 1769 * chance of size changes. 1770 * 1771 * We used to align the tables to 4k, but of course this would 1772 * too simple to be enough. 4k turned out to be too small an 1773 * alignment very soon, and in fact it is almost impossible to 1774 * keep the table size stable for all (max_cpus, max_memory_slots) 1775 * combinations. So the table size is always 64k for pc-i440fx-2.1 1776 * and we give an error if the table grows beyond that limit. 1777 * 1778 * We still have the problem of migrating from "-M pc-i440fx-2.0". For 1779 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables 1780 * than 2.0 and we can always pad the smaller tables with zeros. We can 1781 * then use the exact size of the 2.0 tables. 1782 * 1783 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration. 1784 */ 1785 if (guest_info->legacy_acpi_table_size) { 1786 /* Subtracting aml_len gives the size of fixed tables. Then add the 1787 * size of the PIIX4 DSDT/SSDT in QEMU 2.0. 1788 */ 1789 int legacy_aml_len = 1790 guest_info->legacy_acpi_table_size + 1791 ACPI_BUILD_LEGACY_CPU_AML_SIZE * max_cpus; 1792 int legacy_table_size = 1793 ROUND_UP(tables_blob->len - aml_len + legacy_aml_len, 1794 ACPI_BUILD_ALIGN_SIZE); 1795 if (tables_blob->len > legacy_table_size) { 1796 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */ 1797 error_report("Warning: migration may not work."); 1798 } 1799 g_array_set_size(tables_blob, legacy_table_size); 1800 } else { 1801 /* Make sure we have a buffer in case we need to resize the tables. */ 1802 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) { 1803 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */ 1804 error_report("Warning: ACPI tables are larger than 64k."); 1805 error_report("Warning: migration may not work."); 1806 error_report("Warning: please remove CPUs, NUMA nodes, " 1807 "memory slots or PCI bridges."); 1808 } 1809 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); 1810 } 1811 1812 acpi_align_size(tables->linker, ACPI_BUILD_ALIGN_SIZE); 1813 1814 /* Cleanup memory that's no longer used. */ 1815 g_array_free(table_offsets, true); 1816 } 1817 1818 static void acpi_ram_update(MemoryRegion *mr, GArray *data) 1819 { 1820 uint32_t size = acpi_data_len(data); 1821 1822 /* Make sure RAM size is correct - in case it got changed e.g. by migration */ 1823 memory_region_ram_resize(mr, size, &error_abort); 1824 1825 memcpy(memory_region_get_ram_ptr(mr), data->data, size); 1826 memory_region_set_dirty(mr, 0, size); 1827 } 1828 1829 static void acpi_build_update(void *build_opaque, uint32_t offset) 1830 { 1831 AcpiBuildState *build_state = build_opaque; 1832 AcpiBuildTables tables; 1833 1834 /* No state to update or already patched? Nothing to do. */ 1835 if (!build_state || build_state->patched) { 1836 return; 1837 } 1838 build_state->patched = 1; 1839 1840 acpi_build_tables_init(&tables); 1841 1842 acpi_build(build_state->guest_info, &tables); 1843 1844 acpi_ram_update(build_state->table_mr, tables.table_data); 1845 1846 if (build_state->rsdp) { 1847 memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp)); 1848 } else { 1849 acpi_ram_update(build_state->rsdp_mr, tables.rsdp); 1850 } 1851 1852 acpi_ram_update(build_state->linker_mr, tables.linker); 1853 acpi_build_tables_cleanup(&tables, true); 1854 } 1855 1856 static void acpi_build_reset(void *build_opaque) 1857 { 1858 AcpiBuildState *build_state = build_opaque; 1859 build_state->patched = 0; 1860 } 1861 1862 static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state, 1863 GArray *blob, const char *name, 1864 uint64_t max_size) 1865 { 1866 return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1, 1867 name, acpi_build_update, build_state); 1868 } 1869 1870 static const VMStateDescription vmstate_acpi_build = { 1871 .name = "acpi_build", 1872 .version_id = 1, 1873 .minimum_version_id = 1, 1874 .fields = (VMStateField[]) { 1875 VMSTATE_UINT8(patched, AcpiBuildState), 1876 VMSTATE_END_OF_LIST() 1877 }, 1878 }; 1879 1880 void acpi_setup(PcGuestInfo *guest_info) 1881 { 1882 AcpiBuildTables tables; 1883 AcpiBuildState *build_state; 1884 1885 if (!guest_info->fw_cfg) { 1886 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n"); 1887 return; 1888 } 1889 1890 if (!guest_info->has_acpi_build) { 1891 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n"); 1892 return; 1893 } 1894 1895 if (!acpi_enabled) { 1896 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n"); 1897 return; 1898 } 1899 1900 build_state = g_malloc0(sizeof *build_state); 1901 1902 build_state->guest_info = guest_info; 1903 1904 acpi_set_pci_info(); 1905 1906 acpi_build_tables_init(&tables); 1907 acpi_build(build_state->guest_info, &tables); 1908 1909 /* Now expose it all to Guest */ 1910 build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data, 1911 ACPI_BUILD_TABLE_FILE, 1912 ACPI_BUILD_TABLE_MAX_SIZE); 1913 assert(build_state->table_mr != NULL); 1914 1915 build_state->linker_mr = 1916 acpi_add_rom_blob(build_state, tables.linker, "etc/table-loader", 0); 1917 1918 fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE, 1919 tables.tcpalog->data, acpi_data_len(tables.tcpalog)); 1920 1921 if (!guest_info->rsdp_in_ram) { 1922 /* 1923 * Keep for compatibility with old machine types. 1924 * Though RSDP is small, its contents isn't immutable, so 1925 * we'll update it along with the rest of tables on guest access. 1926 */ 1927 uint32_t rsdp_size = acpi_data_len(tables.rsdp); 1928 1929 build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size); 1930 fw_cfg_add_file_callback(guest_info->fw_cfg, ACPI_BUILD_RSDP_FILE, 1931 acpi_build_update, build_state, 1932 build_state->rsdp, rsdp_size); 1933 build_state->rsdp_mr = NULL; 1934 } else { 1935 build_state->rsdp = NULL; 1936 build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp, 1937 ACPI_BUILD_RSDP_FILE, 0); 1938 } 1939 1940 qemu_register_reset(acpi_build_reset, build_state); 1941 acpi_build_reset(build_state); 1942 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state); 1943 1944 /* Cleanup tables but don't free the memory: we track it 1945 * in build_state. 1946 */ 1947 acpi_build_tables_cleanup(&tables, false); 1948 } 1949