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/bitmap.h" 28 #include "qemu/error-report.h" 29 #include "hw/pci/pci.h" 30 #include "hw/core/cpu.h" 31 #include "target/i386/cpu.h" 32 #include "hw/misc/pvpanic.h" 33 #include "hw/timer/hpet.h" 34 #include "hw/acpi/acpi-defs.h" 35 #include "hw/acpi/acpi.h" 36 #include "hw/acpi/cpu.h" 37 #include "hw/acpi/piix4.h" 38 #include "hw/nvram/fw_cfg.h" 39 #include "hw/acpi/bios-linker-loader.h" 40 #include "hw/isa/isa.h" 41 #include "hw/block/fdc.h" 42 #include "hw/acpi/memory_hotplug.h" 43 #include "sysemu/tpm.h" 44 #include "hw/acpi/tpm.h" 45 #include "hw/acpi/vmgenid.h" 46 #include "hw/boards.h" 47 #include "sysemu/tpm_backend.h" 48 #include "hw/rtc/mc146818rtc_regs.h" 49 #include "migration/vmstate.h" 50 #include "hw/mem/memory-device.h" 51 #include "sysemu/numa.h" 52 #include "sysemu/reset.h" 53 54 /* Supported chipsets: */ 55 #include "hw/acpi/piix4.h" 56 #include "hw/acpi/pcihp.h" 57 #include "hw/i386/ich9.h" 58 #include "hw/pci/pci_bus.h" 59 #include "hw/pci-host/q35.h" 60 #include "hw/i386/x86-iommu.h" 61 62 #include "hw/acpi/aml-build.h" 63 #include "hw/acpi/utils.h" 64 #include "hw/acpi/pci.h" 65 66 #include "qom/qom-qobject.h" 67 #include "hw/i386/amd_iommu.h" 68 #include "hw/i386/intel_iommu.h" 69 70 #include "hw/acpi/ipmi.h" 71 72 /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and 73 * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows 74 * a little bit, there should be plenty of free space since the DSDT 75 * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1. 76 */ 77 #define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97 78 #define ACPI_BUILD_ALIGN_SIZE 0x1000 79 80 #define ACPI_BUILD_TABLE_SIZE 0x20000 81 82 /* #define DEBUG_ACPI_BUILD */ 83 #ifdef DEBUG_ACPI_BUILD 84 #define ACPI_BUILD_DPRINTF(fmt, ...) \ 85 do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0) 86 #else 87 #define ACPI_BUILD_DPRINTF(fmt, ...) 88 #endif 89 90 /* Default IOAPIC ID */ 91 #define ACPI_BUILD_IOAPIC_ID 0x0 92 93 typedef struct AcpiPmInfo { 94 bool s3_disabled; 95 bool s4_disabled; 96 bool pcihp_bridge_en; 97 uint8_t s4_val; 98 AcpiFadtData fadt; 99 uint16_t cpu_hp_io_base; 100 uint16_t pcihp_io_base; 101 uint16_t pcihp_io_len; 102 } AcpiPmInfo; 103 104 typedef struct AcpiMiscInfo { 105 bool is_piix4; 106 bool has_hpet; 107 TPMVersion tpm_version; 108 const unsigned char *dsdt_code; 109 unsigned dsdt_size; 110 uint16_t pvpanic_port; 111 uint16_t applesmc_io_base; 112 } AcpiMiscInfo; 113 114 typedef struct AcpiBuildPciBusHotplugState { 115 GArray *device_table; 116 GArray *notify_table; 117 struct AcpiBuildPciBusHotplugState *parent; 118 bool pcihp_bridge_en; 119 } AcpiBuildPciBusHotplugState; 120 121 typedef struct FwCfgTPMConfig { 122 uint32_t tpmppi_address; 123 uint8_t tpm_version; 124 uint8_t tpmppi_version; 125 } QEMU_PACKED FwCfgTPMConfig; 126 127 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg); 128 129 static void init_common_fadt_data(MachineState *ms, Object *o, 130 AcpiFadtData *data) 131 { 132 uint32_t io = object_property_get_uint(o, ACPI_PM_PROP_PM_IO_BASE, NULL); 133 AmlAddressSpace as = AML_AS_SYSTEM_IO; 134 AcpiFadtData fadt = { 135 .rev = 3, 136 .flags = 137 (1 << ACPI_FADT_F_WBINVD) | 138 (1 << ACPI_FADT_F_PROC_C1) | 139 (1 << ACPI_FADT_F_SLP_BUTTON) | 140 (1 << ACPI_FADT_F_RTC_S4) | 141 (1 << ACPI_FADT_F_USE_PLATFORM_CLOCK) | 142 /* APIC destination mode ("Flat Logical") has an upper limit of 8 143 * CPUs for more than 8 CPUs, "Clustered Logical" mode has to be 144 * used 145 */ 146 ((ms->smp.max_cpus > 8) ? 147 (1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL) : 0), 148 .int_model = 1 /* Multiple APIC */, 149 .rtc_century = RTC_CENTURY, 150 .plvl2_lat = 0xfff /* C2 state not supported */, 151 .plvl3_lat = 0xfff /* C3 state not supported */, 152 .smi_cmd = ACPI_PORT_SMI_CMD, 153 .sci_int = object_property_get_uint(o, ACPI_PM_PROP_SCI_INT, NULL), 154 .acpi_enable_cmd = 155 object_property_get_uint(o, ACPI_PM_PROP_ACPI_ENABLE_CMD, NULL), 156 .acpi_disable_cmd = 157 object_property_get_uint(o, ACPI_PM_PROP_ACPI_DISABLE_CMD, NULL), 158 .pm1a_evt = { .space_id = as, .bit_width = 4 * 8, .address = io }, 159 .pm1a_cnt = { .space_id = as, .bit_width = 2 * 8, 160 .address = io + 0x04 }, 161 .pm_tmr = { .space_id = as, .bit_width = 4 * 8, .address = io + 0x08 }, 162 .gpe0_blk = { .space_id = as, .bit_width = 163 object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK_LEN, NULL) * 8, 164 .address = object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK, NULL) 165 }, 166 }; 167 *data = fadt; 168 } 169 170 static Object *object_resolve_type_unambiguous(const char *typename) 171 { 172 bool ambig; 173 Object *o = object_resolve_path_type("", typename, &ambig); 174 175 if (ambig || !o) { 176 return NULL; 177 } 178 return o; 179 } 180 181 static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm) 182 { 183 Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM); 184 Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE); 185 Object *obj = piix ? piix : lpc; 186 QObject *o; 187 pm->cpu_hp_io_base = 0; 188 pm->pcihp_io_base = 0; 189 pm->pcihp_io_len = 0; 190 191 assert(obj); 192 init_common_fadt_data(machine, obj, &pm->fadt); 193 if (piix) { 194 /* w2k requires FADT(rev1) or it won't boot, keep PC compatible */ 195 pm->fadt.rev = 1; 196 pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE; 197 pm->pcihp_io_base = 198 object_property_get_uint(obj, ACPI_PCIHP_IO_BASE_PROP, NULL); 199 pm->pcihp_io_len = 200 object_property_get_uint(obj, ACPI_PCIHP_IO_LEN_PROP, NULL); 201 } 202 if (lpc) { 203 struct AcpiGenericAddress r = { .space_id = AML_AS_SYSTEM_IO, 204 .bit_width = 8, .address = ICH9_RST_CNT_IOPORT }; 205 pm->fadt.reset_reg = r; 206 pm->fadt.reset_val = 0xf; 207 pm->fadt.flags |= 1 << ACPI_FADT_F_RESET_REG_SUP; 208 pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE; 209 } 210 211 /* The above need not be conditional on machine type because the reset port 212 * happens to be the same on PIIX (pc) and ICH9 (q35). */ 213 QEMU_BUILD_BUG_ON(ICH9_RST_CNT_IOPORT != RCR_IOPORT); 214 215 /* Fill in optional s3/s4 related properties */ 216 o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL); 217 if (o) { 218 pm->s3_disabled = qnum_get_uint(qobject_to(QNum, o)); 219 } else { 220 pm->s3_disabled = false; 221 } 222 qobject_unref(o); 223 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL); 224 if (o) { 225 pm->s4_disabled = qnum_get_uint(qobject_to(QNum, o)); 226 } else { 227 pm->s4_disabled = false; 228 } 229 qobject_unref(o); 230 o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL); 231 if (o) { 232 pm->s4_val = qnum_get_uint(qobject_to(QNum, o)); 233 } else { 234 pm->s4_val = false; 235 } 236 qobject_unref(o); 237 238 pm->pcihp_bridge_en = 239 object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support", 240 NULL); 241 } 242 243 static void acpi_get_misc_info(AcpiMiscInfo *info) 244 { 245 Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM); 246 Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE); 247 assert(!!piix != !!lpc); 248 249 if (piix) { 250 info->is_piix4 = true; 251 } 252 if (lpc) { 253 info->is_piix4 = false; 254 } 255 256 info->has_hpet = hpet_find(); 257 info->tpm_version = tpm_get_version(tpm_find()); 258 info->pvpanic_port = pvpanic_port(); 259 info->applesmc_io_base = applesmc_port(); 260 } 261 262 /* 263 * Because of the PXB hosts we cannot simply query TYPE_PCI_HOST_BRIDGE. 264 * On i386 arch we only have two pci hosts, so we can look only for them. 265 */ 266 static Object *acpi_get_i386_pci_host(void) 267 { 268 PCIHostState *host; 269 270 host = OBJECT_CHECK(PCIHostState, 271 object_resolve_path("/machine/i440fx", NULL), 272 TYPE_PCI_HOST_BRIDGE); 273 if (!host) { 274 host = OBJECT_CHECK(PCIHostState, 275 object_resolve_path("/machine/q35", NULL), 276 TYPE_PCI_HOST_BRIDGE); 277 } 278 279 return OBJECT(host); 280 } 281 282 static void acpi_get_pci_holes(Range *hole, Range *hole64) 283 { 284 Object *pci_host; 285 286 pci_host = acpi_get_i386_pci_host(); 287 g_assert(pci_host); 288 289 range_set_bounds1(hole, 290 object_property_get_uint(pci_host, 291 PCI_HOST_PROP_PCI_HOLE_START, 292 NULL), 293 object_property_get_uint(pci_host, 294 PCI_HOST_PROP_PCI_HOLE_END, 295 NULL)); 296 range_set_bounds1(hole64, 297 object_property_get_uint(pci_host, 298 PCI_HOST_PROP_PCI_HOLE64_START, 299 NULL), 300 object_property_get_uint(pci_host, 301 PCI_HOST_PROP_PCI_HOLE64_END, 302 NULL)); 303 } 304 305 static void acpi_align_size(GArray *blob, unsigned align) 306 { 307 /* Align size to multiple of given size. This reduces the chance 308 * we need to change size in the future (breaking cross version migration). 309 */ 310 g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); 311 } 312 313 /* FACS */ 314 static void 315 build_facs(GArray *table_data) 316 { 317 AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs); 318 memcpy(&facs->signature, "FACS", 4); 319 facs->length = cpu_to_le32(sizeof(*facs)); 320 } 321 322 void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid, 323 const CPUArchIdList *apic_ids, GArray *entry) 324 { 325 uint32_t apic_id = apic_ids->cpus[uid].arch_id; 326 327 /* ACPI spec says that LAPIC entry for non present 328 * CPU may be omitted from MADT or it must be marked 329 * as disabled. However omitting non present CPU from 330 * MADT breaks hotplug on linux. So possible CPUs 331 * should be put in MADT but kept disabled. 332 */ 333 if (apic_id < 255) { 334 AcpiMadtProcessorApic *apic = acpi_data_push(entry, sizeof *apic); 335 336 apic->type = ACPI_APIC_PROCESSOR; 337 apic->length = sizeof(*apic); 338 apic->processor_id = uid; 339 apic->local_apic_id = apic_id; 340 if (apic_ids->cpus[uid].cpu != NULL) { 341 apic->flags = cpu_to_le32(1); 342 } else { 343 apic->flags = cpu_to_le32(0); 344 } 345 } else { 346 AcpiMadtProcessorX2Apic *apic = acpi_data_push(entry, sizeof *apic); 347 348 apic->type = ACPI_APIC_LOCAL_X2APIC; 349 apic->length = sizeof(*apic); 350 apic->uid = cpu_to_le32(uid); 351 apic->x2apic_id = cpu_to_le32(apic_id); 352 if (apic_ids->cpus[uid].cpu != NULL) { 353 apic->flags = cpu_to_le32(1); 354 } else { 355 apic->flags = cpu_to_le32(0); 356 } 357 } 358 } 359 360 static void 361 build_madt(GArray *table_data, BIOSLinker *linker, PCMachineState *pcms) 362 { 363 MachineClass *mc = MACHINE_GET_CLASS(pcms); 364 X86MachineState *x86ms = X86_MACHINE(pcms); 365 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(pcms)); 366 int madt_start = table_data->len; 367 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(pcms->acpi_dev); 368 AcpiDeviceIf *adev = ACPI_DEVICE_IF(pcms->acpi_dev); 369 bool x2apic_mode = false; 370 371 AcpiMultipleApicTable *madt; 372 AcpiMadtIoApic *io_apic; 373 AcpiMadtIntsrcovr *intsrcovr; 374 int i; 375 376 madt = acpi_data_push(table_data, sizeof *madt); 377 madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS); 378 madt->flags = cpu_to_le32(1); 379 380 for (i = 0; i < apic_ids->len; i++) { 381 adevc->madt_cpu(adev, i, apic_ids, table_data); 382 if (apic_ids->cpus[i].arch_id > 254) { 383 x2apic_mode = true; 384 } 385 } 386 387 io_apic = acpi_data_push(table_data, sizeof *io_apic); 388 io_apic->type = ACPI_APIC_IO; 389 io_apic->length = sizeof(*io_apic); 390 io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID; 391 io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS); 392 io_apic->interrupt = cpu_to_le32(0); 393 394 if (x86ms->apic_xrupt_override) { 395 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); 396 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; 397 intsrcovr->length = sizeof(*intsrcovr); 398 intsrcovr->source = 0; 399 intsrcovr->gsi = cpu_to_le32(2); 400 intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */ 401 } 402 for (i = 1; i < 16; i++) { 403 #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11)) 404 if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) { 405 /* No need for a INT source override structure. */ 406 continue; 407 } 408 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); 409 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; 410 intsrcovr->length = sizeof(*intsrcovr); 411 intsrcovr->source = i; 412 intsrcovr->gsi = cpu_to_le32(i); 413 intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */ 414 } 415 416 if (x2apic_mode) { 417 AcpiMadtLocalX2ApicNmi *local_nmi; 418 419 local_nmi = acpi_data_push(table_data, sizeof *local_nmi); 420 local_nmi->type = ACPI_APIC_LOCAL_X2APIC_NMI; 421 local_nmi->length = sizeof(*local_nmi); 422 local_nmi->uid = 0xFFFFFFFF; /* all processors */ 423 local_nmi->flags = cpu_to_le16(0); 424 local_nmi->lint = 1; /* ACPI_LINT1 */ 425 } else { 426 AcpiMadtLocalNmi *local_nmi; 427 428 local_nmi = acpi_data_push(table_data, sizeof *local_nmi); 429 local_nmi->type = ACPI_APIC_LOCAL_NMI; 430 local_nmi->length = sizeof(*local_nmi); 431 local_nmi->processor_id = 0xff; /* all processors */ 432 local_nmi->flags = cpu_to_le16(0); 433 local_nmi->lint = 1; /* ACPI_LINT1 */ 434 } 435 436 build_header(linker, table_data, 437 (void *)(table_data->data + madt_start), "APIC", 438 table_data->len - madt_start, 1, NULL, NULL); 439 } 440 441 static void build_append_pcihp_notify_entry(Aml *method, int slot) 442 { 443 Aml *if_ctx; 444 int32_t devfn = PCI_DEVFN(slot, 0); 445 446 if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot), NULL)); 447 aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1))); 448 aml_append(method, if_ctx); 449 } 450 451 static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus, 452 bool pcihp_bridge_en) 453 { 454 Aml *dev, *notify_method = NULL, *method; 455 QObject *bsel; 456 PCIBus *sec; 457 int i; 458 459 bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL); 460 if (bsel) { 461 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); 462 463 aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val))); 464 notify_method = aml_method("DVNT", 2, AML_NOTSERIALIZED); 465 } 466 467 for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) { 468 DeviceClass *dc; 469 PCIDeviceClass *pc; 470 PCIDevice *pdev = bus->devices[i]; 471 int slot = PCI_SLOT(i); 472 bool hotplug_enabled_dev; 473 bool bridge_in_acpi; 474 475 if (!pdev) { 476 if (bsel) { /* add hotplug slots for non present devices */ 477 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0)); 478 aml_append(dev, aml_name_decl("_SUN", aml_int(slot))); 479 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16))); 480 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 481 aml_append(method, 482 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN")) 483 ); 484 aml_append(dev, method); 485 aml_append(parent_scope, dev); 486 487 build_append_pcihp_notify_entry(notify_method, slot); 488 } 489 continue; 490 } 491 492 pc = PCI_DEVICE_GET_CLASS(pdev); 493 dc = DEVICE_GET_CLASS(pdev); 494 495 /* When hotplug for bridges is enabled, bridges are 496 * described in ACPI separately (see build_pci_bus_end). 497 * In this case they aren't themselves hot-pluggable. 498 * Hotplugged bridges *are* hot-pluggable. 499 */ 500 bridge_in_acpi = pc->is_bridge && pcihp_bridge_en && 501 !DEVICE(pdev)->hotplugged; 502 503 hotplug_enabled_dev = bsel && dc->hotpluggable && !bridge_in_acpi; 504 505 if (pc->class_id == PCI_CLASS_BRIDGE_ISA) { 506 continue; 507 } 508 509 /* start to compose PCI slot descriptor */ 510 dev = aml_device("S%.02X", PCI_DEVFN(slot, 0)); 511 aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16))); 512 513 if (pc->class_id == PCI_CLASS_DISPLAY_VGA) { 514 /* add VGA specific AML methods */ 515 int s3d; 516 517 if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) { 518 s3d = 3; 519 } else { 520 s3d = 0; 521 } 522 523 method = aml_method("_S1D", 0, AML_NOTSERIALIZED); 524 aml_append(method, aml_return(aml_int(0))); 525 aml_append(dev, method); 526 527 method = aml_method("_S2D", 0, AML_NOTSERIALIZED); 528 aml_append(method, aml_return(aml_int(0))); 529 aml_append(dev, method); 530 531 method = aml_method("_S3D", 0, AML_NOTSERIALIZED); 532 aml_append(method, aml_return(aml_int(s3d))); 533 aml_append(dev, method); 534 } else if (hotplug_enabled_dev) { 535 /* add _SUN/_EJ0 to make slot hotpluggable */ 536 aml_append(dev, aml_name_decl("_SUN", aml_int(slot))); 537 538 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 539 aml_append(method, 540 aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN")) 541 ); 542 aml_append(dev, method); 543 544 if (bsel) { 545 build_append_pcihp_notify_entry(notify_method, slot); 546 } 547 } else if (bridge_in_acpi) { 548 /* 549 * device is coldplugged bridge, 550 * add child device descriptions into its scope 551 */ 552 PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev)); 553 554 build_append_pci_bus_devices(dev, sec_bus, pcihp_bridge_en); 555 } 556 /* slot descriptor has been composed, add it into parent context */ 557 aml_append(parent_scope, dev); 558 } 559 560 if (bsel) { 561 aml_append(parent_scope, notify_method); 562 } 563 564 /* Append PCNT method to notify about events on local and child buses. 565 * Add unconditionally for root since DSDT expects it. 566 */ 567 method = aml_method("PCNT", 0, AML_NOTSERIALIZED); 568 569 /* If bus supports hotplug select it and notify about local events */ 570 if (bsel) { 571 uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); 572 573 aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM"))); 574 aml_append(method, 575 aml_call2("DVNT", aml_name("PCIU"), aml_int(1) /* Device Check */) 576 ); 577 aml_append(method, 578 aml_call2("DVNT", aml_name("PCID"), aml_int(3)/* Eject Request */) 579 ); 580 } 581 582 /* Notify about child bus events in any case */ 583 if (pcihp_bridge_en) { 584 QLIST_FOREACH(sec, &bus->child, sibling) { 585 int32_t devfn = sec->parent_dev->devfn; 586 587 if (pci_bus_is_root(sec) || pci_bus_is_express(sec)) { 588 continue; 589 } 590 591 aml_append(method, aml_name("^S%.02X.PCNT", devfn)); 592 } 593 } 594 aml_append(parent_scope, method); 595 qobject_unref(bsel); 596 } 597 598 /** 599 * build_prt_entry: 600 * @link_name: link name for PCI route entry 601 * 602 * build AML package containing a PCI route entry for @link_name 603 */ 604 static Aml *build_prt_entry(const char *link_name) 605 { 606 Aml *a_zero = aml_int(0); 607 Aml *pkg = aml_package(4); 608 aml_append(pkg, a_zero); 609 aml_append(pkg, a_zero); 610 aml_append(pkg, aml_name("%s", link_name)); 611 aml_append(pkg, a_zero); 612 return pkg; 613 } 614 615 /* 616 * initialize_route - Initialize the interrupt routing rule 617 * through a specific LINK: 618 * if (lnk_idx == idx) 619 * route using link 'link_name' 620 */ 621 static Aml *initialize_route(Aml *route, const char *link_name, 622 Aml *lnk_idx, int idx) 623 { 624 Aml *if_ctx = aml_if(aml_equal(lnk_idx, aml_int(idx))); 625 Aml *pkg = build_prt_entry(link_name); 626 627 aml_append(if_ctx, aml_store(pkg, route)); 628 629 return if_ctx; 630 } 631 632 /* 633 * build_prt - Define interrupt rounting rules 634 * 635 * Returns an array of 128 routes, one for each device, 636 * based on device location. 637 * The main goal is to equaly distribute the interrupts 638 * over the 4 existing ACPI links (works only for i440fx). 639 * The hash function is (slot + pin) & 3 -> "LNK[D|A|B|C]". 640 * 641 */ 642 static Aml *build_prt(bool is_pci0_prt) 643 { 644 Aml *method, *while_ctx, *pin, *res; 645 646 method = aml_method("_PRT", 0, AML_NOTSERIALIZED); 647 res = aml_local(0); 648 pin = aml_local(1); 649 aml_append(method, aml_store(aml_package(128), res)); 650 aml_append(method, aml_store(aml_int(0), pin)); 651 652 /* while (pin < 128) */ 653 while_ctx = aml_while(aml_lless(pin, aml_int(128))); 654 { 655 Aml *slot = aml_local(2); 656 Aml *lnk_idx = aml_local(3); 657 Aml *route = aml_local(4); 658 659 /* slot = pin >> 2 */ 660 aml_append(while_ctx, 661 aml_store(aml_shiftright(pin, aml_int(2), NULL), slot)); 662 /* lnk_idx = (slot + pin) & 3 */ 663 aml_append(while_ctx, 664 aml_store(aml_and(aml_add(pin, slot, NULL), aml_int(3), NULL), 665 lnk_idx)); 666 667 /* route[2] = "LNK[D|A|B|C]", selection based on pin % 3 */ 668 aml_append(while_ctx, initialize_route(route, "LNKD", lnk_idx, 0)); 669 if (is_pci0_prt) { 670 Aml *if_device_1, *if_pin_4, *else_pin_4; 671 672 /* device 1 is the power-management device, needs SCI */ 673 if_device_1 = aml_if(aml_equal(lnk_idx, aml_int(1))); 674 { 675 if_pin_4 = aml_if(aml_equal(pin, aml_int(4))); 676 { 677 aml_append(if_pin_4, 678 aml_store(build_prt_entry("LNKS"), route)); 679 } 680 aml_append(if_device_1, if_pin_4); 681 else_pin_4 = aml_else(); 682 { 683 aml_append(else_pin_4, 684 aml_store(build_prt_entry("LNKA"), route)); 685 } 686 aml_append(if_device_1, else_pin_4); 687 } 688 aml_append(while_ctx, if_device_1); 689 } else { 690 aml_append(while_ctx, initialize_route(route, "LNKA", lnk_idx, 1)); 691 } 692 aml_append(while_ctx, initialize_route(route, "LNKB", lnk_idx, 2)); 693 aml_append(while_ctx, initialize_route(route, "LNKC", lnk_idx, 3)); 694 695 /* route[0] = 0x[slot]FFFF */ 696 aml_append(while_ctx, 697 aml_store(aml_or(aml_shiftleft(slot, aml_int(16)), aml_int(0xFFFF), 698 NULL), 699 aml_index(route, aml_int(0)))); 700 /* route[1] = pin & 3 */ 701 aml_append(while_ctx, 702 aml_store(aml_and(pin, aml_int(3), NULL), 703 aml_index(route, aml_int(1)))); 704 /* res[pin] = route */ 705 aml_append(while_ctx, aml_store(route, aml_index(res, pin))); 706 /* pin++ */ 707 aml_append(while_ctx, aml_increment(pin)); 708 } 709 aml_append(method, while_ctx); 710 /* return res*/ 711 aml_append(method, aml_return(res)); 712 713 return method; 714 } 715 716 typedef struct CrsRangeEntry { 717 uint64_t base; 718 uint64_t limit; 719 } CrsRangeEntry; 720 721 static void crs_range_insert(GPtrArray *ranges, uint64_t base, uint64_t limit) 722 { 723 CrsRangeEntry *entry; 724 725 entry = g_malloc(sizeof(*entry)); 726 entry->base = base; 727 entry->limit = limit; 728 729 g_ptr_array_add(ranges, entry); 730 } 731 732 static void crs_range_free(gpointer data) 733 { 734 CrsRangeEntry *entry = (CrsRangeEntry *)data; 735 g_free(entry); 736 } 737 738 typedef struct CrsRangeSet { 739 GPtrArray *io_ranges; 740 GPtrArray *mem_ranges; 741 GPtrArray *mem_64bit_ranges; 742 } CrsRangeSet; 743 744 static void crs_range_set_init(CrsRangeSet *range_set) 745 { 746 range_set->io_ranges = g_ptr_array_new_with_free_func(crs_range_free); 747 range_set->mem_ranges = g_ptr_array_new_with_free_func(crs_range_free); 748 range_set->mem_64bit_ranges = 749 g_ptr_array_new_with_free_func(crs_range_free); 750 } 751 752 static void crs_range_set_free(CrsRangeSet *range_set) 753 { 754 g_ptr_array_free(range_set->io_ranges, true); 755 g_ptr_array_free(range_set->mem_ranges, true); 756 g_ptr_array_free(range_set->mem_64bit_ranges, true); 757 } 758 759 static gint crs_range_compare(gconstpointer a, gconstpointer b) 760 { 761 CrsRangeEntry *entry_a = *(CrsRangeEntry **)a; 762 CrsRangeEntry *entry_b = *(CrsRangeEntry **)b; 763 764 if (entry_a->base < entry_b->base) { 765 return -1; 766 } else if (entry_a->base > entry_b->base) { 767 return 1; 768 } else { 769 return 0; 770 } 771 } 772 773 /* 774 * crs_replace_with_free_ranges - given the 'used' ranges within [start - end] 775 * interval, computes the 'free' ranges from the same interval. 776 * Example: If the input array is { [a1 - a2],[b1 - b2] }, the function 777 * will return { [base - a1], [a2 - b1], [b2 - limit] }. 778 */ 779 static void crs_replace_with_free_ranges(GPtrArray *ranges, 780 uint64_t start, uint64_t end) 781 { 782 GPtrArray *free_ranges = g_ptr_array_new(); 783 uint64_t free_base = start; 784 int i; 785 786 g_ptr_array_sort(ranges, crs_range_compare); 787 for (i = 0; i < ranges->len; i++) { 788 CrsRangeEntry *used = g_ptr_array_index(ranges, i); 789 790 if (free_base < used->base) { 791 crs_range_insert(free_ranges, free_base, used->base - 1); 792 } 793 794 free_base = used->limit + 1; 795 } 796 797 if (free_base < end) { 798 crs_range_insert(free_ranges, free_base, end); 799 } 800 801 g_ptr_array_set_size(ranges, 0); 802 for (i = 0; i < free_ranges->len; i++) { 803 g_ptr_array_add(ranges, g_ptr_array_index(free_ranges, i)); 804 } 805 806 g_ptr_array_free(free_ranges, true); 807 } 808 809 /* 810 * crs_range_merge - merges adjacent ranges in the given array. 811 * Array elements are deleted and replaced with the merged ranges. 812 */ 813 static void crs_range_merge(GPtrArray *range) 814 { 815 GPtrArray *tmp = g_ptr_array_new_with_free_func(crs_range_free); 816 CrsRangeEntry *entry; 817 uint64_t range_base, range_limit; 818 int i; 819 820 if (!range->len) { 821 return; 822 } 823 824 g_ptr_array_sort(range, crs_range_compare); 825 826 entry = g_ptr_array_index(range, 0); 827 range_base = entry->base; 828 range_limit = entry->limit; 829 for (i = 1; i < range->len; i++) { 830 entry = g_ptr_array_index(range, i); 831 if (entry->base - 1 == range_limit) { 832 range_limit = entry->limit; 833 } else { 834 crs_range_insert(tmp, range_base, range_limit); 835 range_base = entry->base; 836 range_limit = entry->limit; 837 } 838 } 839 crs_range_insert(tmp, range_base, range_limit); 840 841 g_ptr_array_set_size(range, 0); 842 for (i = 0; i < tmp->len; i++) { 843 entry = g_ptr_array_index(tmp, i); 844 crs_range_insert(range, entry->base, entry->limit); 845 } 846 g_ptr_array_free(tmp, true); 847 } 848 849 static Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set) 850 { 851 Aml *crs = aml_resource_template(); 852 CrsRangeSet temp_range_set; 853 CrsRangeEntry *entry; 854 uint8_t max_bus = pci_bus_num(host->bus); 855 uint8_t type; 856 int devfn; 857 int i; 858 859 crs_range_set_init(&temp_range_set); 860 for (devfn = 0; devfn < ARRAY_SIZE(host->bus->devices); devfn++) { 861 uint64_t range_base, range_limit; 862 PCIDevice *dev = host->bus->devices[devfn]; 863 864 if (!dev) { 865 continue; 866 } 867 868 for (i = 0; i < PCI_NUM_REGIONS; i++) { 869 PCIIORegion *r = &dev->io_regions[i]; 870 871 range_base = r->addr; 872 range_limit = r->addr + r->size - 1; 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 continue; 880 } 881 882 if (r->type & PCI_BASE_ADDRESS_SPACE_IO) { 883 crs_range_insert(temp_range_set.io_ranges, 884 range_base, range_limit); 885 } else { /* "memory" */ 886 crs_range_insert(temp_range_set.mem_ranges, 887 range_base, range_limit); 888 } 889 } 890 891 type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION; 892 if (type == PCI_HEADER_TYPE_BRIDGE) { 893 uint8_t subordinate = dev->config[PCI_SUBORDINATE_BUS]; 894 if (subordinate > max_bus) { 895 max_bus = subordinate; 896 } 897 898 range_base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO); 899 range_limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO); 900 901 /* 902 * Work-around for old bioses 903 * that do not support multiple root buses 904 */ 905 if (range_base && range_base <= range_limit) { 906 crs_range_insert(temp_range_set.io_ranges, 907 range_base, range_limit); 908 } 909 910 range_base = 911 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); 912 range_limit = 913 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY); 914 915 /* 916 * Work-around for old bioses 917 * that do not support multiple root buses 918 */ 919 if (range_base && range_base <= range_limit) { 920 uint64_t length = range_limit - range_base + 1; 921 if (range_limit <= UINT32_MAX && length <= UINT32_MAX) { 922 crs_range_insert(temp_range_set.mem_ranges, 923 range_base, range_limit); 924 } else { 925 crs_range_insert(temp_range_set.mem_64bit_ranges, 926 range_base, range_limit); 927 } 928 } 929 930 range_base = 931 pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); 932 range_limit = 933 pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH); 934 935 /* 936 * Work-around for old bioses 937 * that do not support multiple root buses 938 */ 939 if (range_base && range_base <= range_limit) { 940 uint64_t length = range_limit - range_base + 1; 941 if (range_limit <= UINT32_MAX && length <= UINT32_MAX) { 942 crs_range_insert(temp_range_set.mem_ranges, 943 range_base, range_limit); 944 } else { 945 crs_range_insert(temp_range_set.mem_64bit_ranges, 946 range_base, range_limit); 947 } 948 } 949 } 950 } 951 952 crs_range_merge(temp_range_set.io_ranges); 953 for (i = 0; i < temp_range_set.io_ranges->len; i++) { 954 entry = g_ptr_array_index(temp_range_set.io_ranges, i); 955 aml_append(crs, 956 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 957 AML_POS_DECODE, AML_ENTIRE_RANGE, 958 0, entry->base, entry->limit, 0, 959 entry->limit - entry->base + 1)); 960 crs_range_insert(range_set->io_ranges, entry->base, entry->limit); 961 } 962 963 crs_range_merge(temp_range_set.mem_ranges); 964 for (i = 0; i < temp_range_set.mem_ranges->len; i++) { 965 entry = g_ptr_array_index(temp_range_set.mem_ranges, i); 966 aml_append(crs, 967 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, 968 AML_MAX_FIXED, AML_NON_CACHEABLE, 969 AML_READ_WRITE, 970 0, entry->base, entry->limit, 0, 971 entry->limit - entry->base + 1)); 972 crs_range_insert(range_set->mem_ranges, entry->base, entry->limit); 973 } 974 975 crs_range_merge(temp_range_set.mem_64bit_ranges); 976 for (i = 0; i < temp_range_set.mem_64bit_ranges->len; i++) { 977 entry = g_ptr_array_index(temp_range_set.mem_64bit_ranges, i); 978 aml_append(crs, 979 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, 980 AML_MAX_FIXED, AML_NON_CACHEABLE, 981 AML_READ_WRITE, 982 0, entry->base, entry->limit, 0, 983 entry->limit - entry->base + 1)); 984 crs_range_insert(range_set->mem_64bit_ranges, 985 entry->base, entry->limit); 986 } 987 988 crs_range_set_free(&temp_range_set); 989 990 aml_append(crs, 991 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, 992 0, 993 pci_bus_num(host->bus), 994 max_bus, 995 0, 996 max_bus - pci_bus_num(host->bus) + 1)); 997 998 return crs; 999 } 1000 1001 static void build_hpet_aml(Aml *table) 1002 { 1003 Aml *crs; 1004 Aml *field; 1005 Aml *method; 1006 Aml *if_ctx; 1007 Aml *scope = aml_scope("_SB"); 1008 Aml *dev = aml_device("HPET"); 1009 Aml *zero = aml_int(0); 1010 Aml *id = aml_local(0); 1011 Aml *period = aml_local(1); 1012 1013 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0103"))); 1014 aml_append(dev, aml_name_decl("_UID", zero)); 1015 1016 aml_append(dev, 1017 aml_operation_region("HPTM", AML_SYSTEM_MEMORY, aml_int(HPET_BASE), 1018 HPET_LEN)); 1019 field = aml_field("HPTM", AML_DWORD_ACC, AML_LOCK, AML_PRESERVE); 1020 aml_append(field, aml_named_field("VEND", 32)); 1021 aml_append(field, aml_named_field("PRD", 32)); 1022 aml_append(dev, field); 1023 1024 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1025 aml_append(method, aml_store(aml_name("VEND"), id)); 1026 aml_append(method, aml_store(aml_name("PRD"), period)); 1027 aml_append(method, aml_shiftright(id, aml_int(16), id)); 1028 if_ctx = aml_if(aml_lor(aml_equal(id, zero), 1029 aml_equal(id, aml_int(0xffff)))); 1030 { 1031 aml_append(if_ctx, aml_return(zero)); 1032 } 1033 aml_append(method, if_ctx); 1034 1035 if_ctx = aml_if(aml_lor(aml_equal(period, zero), 1036 aml_lgreater(period, aml_int(100000000)))); 1037 { 1038 aml_append(if_ctx, aml_return(zero)); 1039 } 1040 aml_append(method, if_ctx); 1041 1042 aml_append(method, aml_return(aml_int(0x0F))); 1043 aml_append(dev, method); 1044 1045 crs = aml_resource_template(); 1046 aml_append(crs, aml_memory32_fixed(HPET_BASE, HPET_LEN, AML_READ_ONLY)); 1047 aml_append(dev, aml_name_decl("_CRS", crs)); 1048 1049 aml_append(scope, dev); 1050 aml_append(table, scope); 1051 } 1052 1053 static Aml *build_fdinfo_aml(int idx, FloppyDriveType type) 1054 { 1055 Aml *dev, *fdi; 1056 uint8_t maxc, maxh, maxs; 1057 1058 isa_fdc_get_drive_max_chs(type, &maxc, &maxh, &maxs); 1059 1060 dev = aml_device("FLP%c", 'A' + idx); 1061 1062 aml_append(dev, aml_name_decl("_ADR", aml_int(idx))); 1063 1064 fdi = aml_package(16); 1065 aml_append(fdi, aml_int(idx)); /* Drive Number */ 1066 aml_append(fdi, 1067 aml_int(cmos_get_fd_drive_type(type))); /* Device Type */ 1068 /* 1069 * the values below are the limits of the drive, and are thus independent 1070 * of the inserted media 1071 */ 1072 aml_append(fdi, aml_int(maxc)); /* Maximum Cylinder Number */ 1073 aml_append(fdi, aml_int(maxs)); /* Maximum Sector Number */ 1074 aml_append(fdi, aml_int(maxh)); /* Maximum Head Number */ 1075 /* 1076 * SeaBIOS returns the below values for int 0x13 func 0x08 regardless of 1077 * the drive type, so shall we 1078 */ 1079 aml_append(fdi, aml_int(0xAF)); /* disk_specify_1 */ 1080 aml_append(fdi, aml_int(0x02)); /* disk_specify_2 */ 1081 aml_append(fdi, aml_int(0x25)); /* disk_motor_wait */ 1082 aml_append(fdi, aml_int(0x02)); /* disk_sector_siz */ 1083 aml_append(fdi, aml_int(0x12)); /* disk_eot */ 1084 aml_append(fdi, aml_int(0x1B)); /* disk_rw_gap */ 1085 aml_append(fdi, aml_int(0xFF)); /* disk_dtl */ 1086 aml_append(fdi, aml_int(0x6C)); /* disk_formt_gap */ 1087 aml_append(fdi, aml_int(0xF6)); /* disk_fill */ 1088 aml_append(fdi, aml_int(0x0F)); /* disk_head_sttl */ 1089 aml_append(fdi, aml_int(0x08)); /* disk_motor_strt */ 1090 1091 aml_append(dev, aml_name_decl("_FDI", fdi)); 1092 return dev; 1093 } 1094 1095 static Aml *build_fdc_device_aml(ISADevice *fdc) 1096 { 1097 int i; 1098 Aml *dev; 1099 Aml *crs; 1100 1101 #define ACPI_FDE_MAX_FD 4 1102 uint32_t fde_buf[5] = { 1103 0, 0, 0, 0, /* presence of floppy drives #0 - #3 */ 1104 cpu_to_le32(2) /* tape presence (2 == never present) */ 1105 }; 1106 1107 dev = aml_device("FDC0"); 1108 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0700"))); 1109 1110 crs = aml_resource_template(); 1111 aml_append(crs, aml_io(AML_DECODE16, 0x03F2, 0x03F2, 0x00, 0x04)); 1112 aml_append(crs, aml_io(AML_DECODE16, 0x03F7, 0x03F7, 0x00, 0x01)); 1113 aml_append(crs, aml_irq_no_flags(6)); 1114 aml_append(crs, 1115 aml_dma(AML_COMPATIBILITY, AML_NOTBUSMASTER, AML_TRANSFER8, 2)); 1116 aml_append(dev, aml_name_decl("_CRS", crs)); 1117 1118 for (i = 0; i < MIN(MAX_FD, ACPI_FDE_MAX_FD); i++) { 1119 FloppyDriveType type = isa_fdc_get_drive_type(fdc, i); 1120 1121 if (type < FLOPPY_DRIVE_TYPE_NONE) { 1122 fde_buf[i] = cpu_to_le32(1); /* drive present */ 1123 aml_append(dev, build_fdinfo_aml(i, type)); 1124 } 1125 } 1126 aml_append(dev, aml_name_decl("_FDE", 1127 aml_buffer(sizeof(fde_buf), (uint8_t *)fde_buf))); 1128 1129 return dev; 1130 } 1131 1132 static Aml *build_rtc_device_aml(void) 1133 { 1134 Aml *dev; 1135 Aml *crs; 1136 1137 dev = aml_device("RTC"); 1138 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0B00"))); 1139 crs = aml_resource_template(); 1140 aml_append(crs, aml_io(AML_DECODE16, 0x0070, 0x0070, 0x10, 0x02)); 1141 aml_append(crs, aml_irq_no_flags(8)); 1142 aml_append(crs, aml_io(AML_DECODE16, 0x0072, 0x0072, 0x02, 0x06)); 1143 aml_append(dev, aml_name_decl("_CRS", crs)); 1144 1145 return dev; 1146 } 1147 1148 static Aml *build_kbd_device_aml(void) 1149 { 1150 Aml *dev; 1151 Aml *crs; 1152 Aml *method; 1153 1154 dev = aml_device("KBD"); 1155 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0303"))); 1156 1157 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1158 aml_append(method, aml_return(aml_int(0x0f))); 1159 aml_append(dev, method); 1160 1161 crs = aml_resource_template(); 1162 aml_append(crs, aml_io(AML_DECODE16, 0x0060, 0x0060, 0x01, 0x01)); 1163 aml_append(crs, aml_io(AML_DECODE16, 0x0064, 0x0064, 0x01, 0x01)); 1164 aml_append(crs, aml_irq_no_flags(1)); 1165 aml_append(dev, aml_name_decl("_CRS", crs)); 1166 1167 return dev; 1168 } 1169 1170 static Aml *build_mouse_device_aml(void) 1171 { 1172 Aml *dev; 1173 Aml *crs; 1174 Aml *method; 1175 1176 dev = aml_device("MOU"); 1177 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0F13"))); 1178 1179 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1180 aml_append(method, aml_return(aml_int(0x0f))); 1181 aml_append(dev, method); 1182 1183 crs = aml_resource_template(); 1184 aml_append(crs, aml_irq_no_flags(12)); 1185 aml_append(dev, aml_name_decl("_CRS", crs)); 1186 1187 return dev; 1188 } 1189 1190 static Aml *build_lpt_device_aml(void) 1191 { 1192 Aml *dev; 1193 Aml *crs; 1194 Aml *method; 1195 Aml *if_ctx; 1196 Aml *else_ctx; 1197 Aml *zero = aml_int(0); 1198 Aml *is_present = aml_local(0); 1199 1200 dev = aml_device("LPT"); 1201 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0400"))); 1202 1203 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1204 aml_append(method, aml_store(aml_name("LPEN"), is_present)); 1205 if_ctx = aml_if(aml_equal(is_present, zero)); 1206 { 1207 aml_append(if_ctx, aml_return(aml_int(0x00))); 1208 } 1209 aml_append(method, if_ctx); 1210 else_ctx = aml_else(); 1211 { 1212 aml_append(else_ctx, aml_return(aml_int(0x0f))); 1213 } 1214 aml_append(method, else_ctx); 1215 aml_append(dev, method); 1216 1217 crs = aml_resource_template(); 1218 aml_append(crs, aml_io(AML_DECODE16, 0x0378, 0x0378, 0x08, 0x08)); 1219 aml_append(crs, aml_irq_no_flags(7)); 1220 aml_append(dev, aml_name_decl("_CRS", crs)); 1221 1222 return dev; 1223 } 1224 1225 static Aml *build_com_device_aml(uint8_t uid) 1226 { 1227 Aml *dev; 1228 Aml *crs; 1229 Aml *method; 1230 Aml *if_ctx; 1231 Aml *else_ctx; 1232 Aml *zero = aml_int(0); 1233 Aml *is_present = aml_local(0); 1234 const char *enabled_field = "CAEN"; 1235 uint8_t irq = 4; 1236 uint16_t io_port = 0x03F8; 1237 1238 assert(uid == 1 || uid == 2); 1239 if (uid == 2) { 1240 enabled_field = "CBEN"; 1241 irq = 3; 1242 io_port = 0x02F8; 1243 } 1244 1245 dev = aml_device("COM%d", uid); 1246 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0501"))); 1247 aml_append(dev, aml_name_decl("_UID", aml_int(uid))); 1248 1249 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1250 aml_append(method, aml_store(aml_name("%s", enabled_field), is_present)); 1251 if_ctx = aml_if(aml_equal(is_present, zero)); 1252 { 1253 aml_append(if_ctx, aml_return(aml_int(0x00))); 1254 } 1255 aml_append(method, if_ctx); 1256 else_ctx = aml_else(); 1257 { 1258 aml_append(else_ctx, aml_return(aml_int(0x0f))); 1259 } 1260 aml_append(method, else_ctx); 1261 aml_append(dev, method); 1262 1263 crs = aml_resource_template(); 1264 aml_append(crs, aml_io(AML_DECODE16, io_port, io_port, 0x00, 0x08)); 1265 aml_append(crs, aml_irq_no_flags(irq)); 1266 aml_append(dev, aml_name_decl("_CRS", crs)); 1267 1268 return dev; 1269 } 1270 1271 static void build_isa_devices_aml(Aml *table) 1272 { 1273 ISADevice *fdc = pc_find_fdc0(); 1274 bool ambiguous; 1275 1276 Aml *scope = aml_scope("_SB.PCI0.ISA"); 1277 Object *obj = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous); 1278 1279 aml_append(scope, build_rtc_device_aml()); 1280 aml_append(scope, build_kbd_device_aml()); 1281 aml_append(scope, build_mouse_device_aml()); 1282 if (fdc) { 1283 aml_append(scope, build_fdc_device_aml(fdc)); 1284 } 1285 aml_append(scope, build_lpt_device_aml()); 1286 aml_append(scope, build_com_device_aml(1)); 1287 aml_append(scope, build_com_device_aml(2)); 1288 1289 if (ambiguous) { 1290 error_report("Multiple ISA busses, unable to define IPMI ACPI data"); 1291 } else if (!obj) { 1292 error_report("No ISA bus, unable to define IPMI ACPI data"); 1293 } else { 1294 build_acpi_ipmi_devices(scope, BUS(obj), "\\_SB.PCI0.ISA"); 1295 } 1296 1297 aml_append(table, scope); 1298 } 1299 1300 static void build_dbg_aml(Aml *table) 1301 { 1302 Aml *field; 1303 Aml *method; 1304 Aml *while_ctx; 1305 Aml *scope = aml_scope("\\"); 1306 Aml *buf = aml_local(0); 1307 Aml *len = aml_local(1); 1308 Aml *idx = aml_local(2); 1309 1310 aml_append(scope, 1311 aml_operation_region("DBG", AML_SYSTEM_IO, aml_int(0x0402), 0x01)); 1312 field = aml_field("DBG", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); 1313 aml_append(field, aml_named_field("DBGB", 8)); 1314 aml_append(scope, field); 1315 1316 method = aml_method("DBUG", 1, AML_NOTSERIALIZED); 1317 1318 aml_append(method, aml_to_hexstring(aml_arg(0), buf)); 1319 aml_append(method, aml_to_buffer(buf, buf)); 1320 aml_append(method, aml_subtract(aml_sizeof(buf), aml_int(1), len)); 1321 aml_append(method, aml_store(aml_int(0), idx)); 1322 1323 while_ctx = aml_while(aml_lless(idx, len)); 1324 aml_append(while_ctx, 1325 aml_store(aml_derefof(aml_index(buf, idx)), aml_name("DBGB"))); 1326 aml_append(while_ctx, aml_increment(idx)); 1327 aml_append(method, while_ctx); 1328 1329 aml_append(method, aml_store(aml_int(0x0A), aml_name("DBGB"))); 1330 aml_append(scope, method); 1331 1332 aml_append(table, scope); 1333 } 1334 1335 static Aml *build_link_dev(const char *name, uint8_t uid, Aml *reg) 1336 { 1337 Aml *dev; 1338 Aml *crs; 1339 Aml *method; 1340 uint32_t irqs[] = {5, 10, 11}; 1341 1342 dev = aml_device("%s", name); 1343 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 1344 aml_append(dev, aml_name_decl("_UID", aml_int(uid))); 1345 1346 crs = aml_resource_template(); 1347 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 1348 AML_SHARED, irqs, ARRAY_SIZE(irqs))); 1349 aml_append(dev, aml_name_decl("_PRS", crs)); 1350 1351 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1352 aml_append(method, aml_return(aml_call1("IQST", reg))); 1353 aml_append(dev, method); 1354 1355 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 1356 aml_append(method, aml_or(reg, aml_int(0x80), reg)); 1357 aml_append(dev, method); 1358 1359 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 1360 aml_append(method, aml_return(aml_call1("IQCR", reg))); 1361 aml_append(dev, method); 1362 1363 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 1364 aml_append(method, aml_create_dword_field(aml_arg(0), aml_int(5), "PRRI")); 1365 aml_append(method, aml_store(aml_name("PRRI"), reg)); 1366 aml_append(dev, method); 1367 1368 return dev; 1369 } 1370 1371 static Aml *build_gsi_link_dev(const char *name, uint8_t uid, uint8_t gsi) 1372 { 1373 Aml *dev; 1374 Aml *crs; 1375 Aml *method; 1376 uint32_t irqs; 1377 1378 dev = aml_device("%s", name); 1379 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 1380 aml_append(dev, aml_name_decl("_UID", aml_int(uid))); 1381 1382 crs = aml_resource_template(); 1383 irqs = gsi; 1384 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, 1385 AML_SHARED, &irqs, 1)); 1386 aml_append(dev, aml_name_decl("_PRS", crs)); 1387 1388 aml_append(dev, aml_name_decl("_CRS", crs)); 1389 1390 /* 1391 * _DIS can be no-op because the interrupt cannot be disabled. 1392 */ 1393 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 1394 aml_append(dev, method); 1395 1396 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 1397 aml_append(dev, method); 1398 1399 return dev; 1400 } 1401 1402 /* _CRS method - get current settings */ 1403 static Aml *build_iqcr_method(bool is_piix4) 1404 { 1405 Aml *if_ctx; 1406 uint32_t irqs; 1407 Aml *method = aml_method("IQCR", 1, AML_SERIALIZED); 1408 Aml *crs = aml_resource_template(); 1409 1410 irqs = 0; 1411 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, 1412 AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1)); 1413 aml_append(method, aml_name_decl("PRR0", crs)); 1414 1415 aml_append(method, 1416 aml_create_dword_field(aml_name("PRR0"), aml_int(5), "PRRI")); 1417 1418 if (is_piix4) { 1419 if_ctx = aml_if(aml_lless(aml_arg(0), aml_int(0x80))); 1420 aml_append(if_ctx, aml_store(aml_arg(0), aml_name("PRRI"))); 1421 aml_append(method, if_ctx); 1422 } else { 1423 aml_append(method, 1424 aml_store(aml_and(aml_arg(0), aml_int(0xF), NULL), 1425 aml_name("PRRI"))); 1426 } 1427 1428 aml_append(method, aml_return(aml_name("PRR0"))); 1429 return method; 1430 } 1431 1432 /* _STA method - get status */ 1433 static Aml *build_irq_status_method(void) 1434 { 1435 Aml *if_ctx; 1436 Aml *method = aml_method("IQST", 1, AML_NOTSERIALIZED); 1437 1438 if_ctx = aml_if(aml_and(aml_int(0x80), aml_arg(0), NULL)); 1439 aml_append(if_ctx, aml_return(aml_int(0x09))); 1440 aml_append(method, if_ctx); 1441 aml_append(method, aml_return(aml_int(0x0B))); 1442 return method; 1443 } 1444 1445 static void build_piix4_pci0_int(Aml *table) 1446 { 1447 Aml *dev; 1448 Aml *crs; 1449 Aml *field; 1450 Aml *method; 1451 uint32_t irqs; 1452 Aml *sb_scope = aml_scope("_SB"); 1453 Aml *pci0_scope = aml_scope("PCI0"); 1454 1455 aml_append(pci0_scope, build_prt(true)); 1456 aml_append(sb_scope, pci0_scope); 1457 1458 field = aml_field("PCI0.ISA.P40C", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); 1459 aml_append(field, aml_named_field("PRQ0", 8)); 1460 aml_append(field, aml_named_field("PRQ1", 8)); 1461 aml_append(field, aml_named_field("PRQ2", 8)); 1462 aml_append(field, aml_named_field("PRQ3", 8)); 1463 aml_append(sb_scope, field); 1464 1465 aml_append(sb_scope, build_irq_status_method()); 1466 aml_append(sb_scope, build_iqcr_method(true)); 1467 1468 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQ0"))); 1469 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQ1"))); 1470 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQ2"))); 1471 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQ3"))); 1472 1473 dev = aml_device("LNKS"); 1474 { 1475 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); 1476 aml_append(dev, aml_name_decl("_UID", aml_int(4))); 1477 1478 crs = aml_resource_template(); 1479 irqs = 9; 1480 aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, 1481 AML_ACTIVE_HIGH, AML_SHARED, 1482 &irqs, 1)); 1483 aml_append(dev, aml_name_decl("_PRS", crs)); 1484 1485 /* The SCI cannot be disabled and is always attached to GSI 9, 1486 * so these are no-ops. We only need this link to override the 1487 * polarity to active high and match the content of the MADT. 1488 */ 1489 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 1490 aml_append(method, aml_return(aml_int(0x0b))); 1491 aml_append(dev, method); 1492 1493 method = aml_method("_DIS", 0, AML_NOTSERIALIZED); 1494 aml_append(dev, method); 1495 1496 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 1497 aml_append(method, aml_return(aml_name("_PRS"))); 1498 aml_append(dev, method); 1499 1500 method = aml_method("_SRS", 1, AML_NOTSERIALIZED); 1501 aml_append(dev, method); 1502 } 1503 aml_append(sb_scope, dev); 1504 1505 aml_append(table, sb_scope); 1506 } 1507 1508 static void append_q35_prt_entry(Aml *ctx, uint32_t nr, const char *name) 1509 { 1510 int i; 1511 int head; 1512 Aml *pkg; 1513 char base = name[3] < 'E' ? 'A' : 'E'; 1514 char *s = g_strdup(name); 1515 Aml *a_nr = aml_int((nr << 16) | 0xffff); 1516 1517 assert(strlen(s) == 4); 1518 1519 head = name[3] - base; 1520 for (i = 0; i < 4; i++) { 1521 if (head + i > 3) { 1522 head = i * -1; 1523 } 1524 s[3] = base + head + i; 1525 pkg = aml_package(4); 1526 aml_append(pkg, a_nr); 1527 aml_append(pkg, aml_int(i)); 1528 aml_append(pkg, aml_name("%s", s)); 1529 aml_append(pkg, aml_int(0)); 1530 aml_append(ctx, pkg); 1531 } 1532 g_free(s); 1533 } 1534 1535 static Aml *build_q35_routing_table(const char *str) 1536 { 1537 int i; 1538 Aml *pkg; 1539 char *name = g_strdup_printf("%s ", str); 1540 1541 pkg = aml_package(128); 1542 for (i = 0; i < 0x18; i++) { 1543 name[3] = 'E' + (i & 0x3); 1544 append_q35_prt_entry(pkg, i, name); 1545 } 1546 1547 name[3] = 'E'; 1548 append_q35_prt_entry(pkg, 0x18, name); 1549 1550 /* INTA -> PIRQA for slot 25 - 31, see the default value of D<N>IR */ 1551 for (i = 0x0019; i < 0x1e; i++) { 1552 name[3] = 'A'; 1553 append_q35_prt_entry(pkg, i, name); 1554 } 1555 1556 /* PCIe->PCI bridge. use PIRQ[E-H] */ 1557 name[3] = 'E'; 1558 append_q35_prt_entry(pkg, 0x1e, name); 1559 name[3] = 'A'; 1560 append_q35_prt_entry(pkg, 0x1f, name); 1561 1562 g_free(name); 1563 return pkg; 1564 } 1565 1566 static void build_q35_pci0_int(Aml *table) 1567 { 1568 Aml *field; 1569 Aml *method; 1570 Aml *sb_scope = aml_scope("_SB"); 1571 Aml *pci0_scope = aml_scope("PCI0"); 1572 1573 /* Zero => PIC mode, One => APIC Mode */ 1574 aml_append(table, aml_name_decl("PICF", aml_int(0))); 1575 method = aml_method("_PIC", 1, AML_NOTSERIALIZED); 1576 { 1577 aml_append(method, aml_store(aml_arg(0), aml_name("PICF"))); 1578 } 1579 aml_append(table, method); 1580 1581 aml_append(pci0_scope, 1582 aml_name_decl("PRTP", build_q35_routing_table("LNK"))); 1583 aml_append(pci0_scope, 1584 aml_name_decl("PRTA", build_q35_routing_table("GSI"))); 1585 1586 method = aml_method("_PRT", 0, AML_NOTSERIALIZED); 1587 { 1588 Aml *if_ctx; 1589 Aml *else_ctx; 1590 1591 /* PCI IRQ routing table, example from ACPI 2.0a specification, 1592 section 6.2.8.1 */ 1593 /* Note: we provide the same info as the PCI routing 1594 table of the Bochs BIOS */ 1595 if_ctx = aml_if(aml_equal(aml_name("PICF"), aml_int(0))); 1596 aml_append(if_ctx, aml_return(aml_name("PRTP"))); 1597 aml_append(method, if_ctx); 1598 else_ctx = aml_else(); 1599 aml_append(else_ctx, aml_return(aml_name("PRTA"))); 1600 aml_append(method, else_ctx); 1601 } 1602 aml_append(pci0_scope, method); 1603 aml_append(sb_scope, pci0_scope); 1604 1605 field = aml_field("PCI0.ISA.PIRQ", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); 1606 aml_append(field, aml_named_field("PRQA", 8)); 1607 aml_append(field, aml_named_field("PRQB", 8)); 1608 aml_append(field, aml_named_field("PRQC", 8)); 1609 aml_append(field, aml_named_field("PRQD", 8)); 1610 aml_append(field, aml_reserved_field(0x20)); 1611 aml_append(field, aml_named_field("PRQE", 8)); 1612 aml_append(field, aml_named_field("PRQF", 8)); 1613 aml_append(field, aml_named_field("PRQG", 8)); 1614 aml_append(field, aml_named_field("PRQH", 8)); 1615 aml_append(sb_scope, field); 1616 1617 aml_append(sb_scope, build_irq_status_method()); 1618 aml_append(sb_scope, build_iqcr_method(false)); 1619 1620 aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQA"))); 1621 aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQB"))); 1622 aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQC"))); 1623 aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQD"))); 1624 aml_append(sb_scope, build_link_dev("LNKE", 4, aml_name("PRQE"))); 1625 aml_append(sb_scope, build_link_dev("LNKF", 5, aml_name("PRQF"))); 1626 aml_append(sb_scope, build_link_dev("LNKG", 6, aml_name("PRQG"))); 1627 aml_append(sb_scope, build_link_dev("LNKH", 7, aml_name("PRQH"))); 1628 1629 aml_append(sb_scope, build_gsi_link_dev("GSIA", 0x10, 0x10)); 1630 aml_append(sb_scope, build_gsi_link_dev("GSIB", 0x11, 0x11)); 1631 aml_append(sb_scope, build_gsi_link_dev("GSIC", 0x12, 0x12)); 1632 aml_append(sb_scope, build_gsi_link_dev("GSID", 0x13, 0x13)); 1633 aml_append(sb_scope, build_gsi_link_dev("GSIE", 0x14, 0x14)); 1634 aml_append(sb_scope, build_gsi_link_dev("GSIF", 0x15, 0x15)); 1635 aml_append(sb_scope, build_gsi_link_dev("GSIG", 0x16, 0x16)); 1636 aml_append(sb_scope, build_gsi_link_dev("GSIH", 0x17, 0x17)); 1637 1638 aml_append(table, sb_scope); 1639 } 1640 1641 static void build_q35_isa_bridge(Aml *table) 1642 { 1643 Aml *dev; 1644 Aml *scope; 1645 Aml *field; 1646 1647 scope = aml_scope("_SB.PCI0"); 1648 dev = aml_device("ISA"); 1649 aml_append(dev, aml_name_decl("_ADR", aml_int(0x001F0000))); 1650 1651 /* ICH9 PCI to ISA irq remapping */ 1652 aml_append(dev, aml_operation_region("PIRQ", AML_PCI_CONFIG, 1653 aml_int(0x60), 0x0C)); 1654 1655 aml_append(dev, aml_operation_region("LPCD", AML_PCI_CONFIG, 1656 aml_int(0x80), 0x02)); 1657 field = aml_field("LPCD", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE); 1658 aml_append(field, aml_named_field("COMA", 3)); 1659 aml_append(field, aml_reserved_field(1)); 1660 aml_append(field, aml_named_field("COMB", 3)); 1661 aml_append(field, aml_reserved_field(1)); 1662 aml_append(field, aml_named_field("LPTD", 2)); 1663 aml_append(dev, field); 1664 1665 aml_append(dev, aml_operation_region("LPCE", AML_PCI_CONFIG, 1666 aml_int(0x82), 0x02)); 1667 /* enable bits */ 1668 field = aml_field("LPCE", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE); 1669 aml_append(field, aml_named_field("CAEN", 1)); 1670 aml_append(field, aml_named_field("CBEN", 1)); 1671 aml_append(field, aml_named_field("LPEN", 1)); 1672 aml_append(dev, field); 1673 1674 aml_append(scope, dev); 1675 aml_append(table, scope); 1676 } 1677 1678 static void build_piix4_pm(Aml *table) 1679 { 1680 Aml *dev; 1681 Aml *scope; 1682 1683 scope = aml_scope("_SB.PCI0"); 1684 dev = aml_device("PX13"); 1685 aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010003))); 1686 1687 aml_append(dev, aml_operation_region("P13C", AML_PCI_CONFIG, 1688 aml_int(0x00), 0xff)); 1689 aml_append(scope, dev); 1690 aml_append(table, scope); 1691 } 1692 1693 static void build_piix4_isa_bridge(Aml *table) 1694 { 1695 Aml *dev; 1696 Aml *scope; 1697 Aml *field; 1698 1699 scope = aml_scope("_SB.PCI0"); 1700 dev = aml_device("ISA"); 1701 aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010000))); 1702 1703 /* PIIX PCI to ISA irq remapping */ 1704 aml_append(dev, aml_operation_region("P40C", AML_PCI_CONFIG, 1705 aml_int(0x60), 0x04)); 1706 /* enable bits */ 1707 field = aml_field("^PX13.P13C", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE); 1708 /* Offset(0x5f),, 7, */ 1709 aml_append(field, aml_reserved_field(0x2f8)); 1710 aml_append(field, aml_reserved_field(7)); 1711 aml_append(field, aml_named_field("LPEN", 1)); 1712 /* Offset(0x67),, 3, */ 1713 aml_append(field, aml_reserved_field(0x38)); 1714 aml_append(field, aml_reserved_field(3)); 1715 aml_append(field, aml_named_field("CAEN", 1)); 1716 aml_append(field, aml_reserved_field(3)); 1717 aml_append(field, aml_named_field("CBEN", 1)); 1718 aml_append(dev, field); 1719 1720 aml_append(scope, dev); 1721 aml_append(table, scope); 1722 } 1723 1724 static void build_piix4_pci_hotplug(Aml *table) 1725 { 1726 Aml *scope; 1727 Aml *field; 1728 Aml *method; 1729 1730 scope = aml_scope("_SB.PCI0"); 1731 1732 aml_append(scope, 1733 aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(0xae00), 0x08)); 1734 field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1735 aml_append(field, aml_named_field("PCIU", 32)); 1736 aml_append(field, aml_named_field("PCID", 32)); 1737 aml_append(scope, field); 1738 1739 aml_append(scope, 1740 aml_operation_region("SEJ", AML_SYSTEM_IO, aml_int(0xae08), 0x04)); 1741 field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1742 aml_append(field, aml_named_field("B0EJ", 32)); 1743 aml_append(scope, field); 1744 1745 aml_append(scope, 1746 aml_operation_region("BNMR", AML_SYSTEM_IO, aml_int(0xae10), 0x04)); 1747 field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); 1748 aml_append(field, aml_named_field("BNUM", 32)); 1749 aml_append(scope, field); 1750 1751 aml_append(scope, aml_mutex("BLCK", 0)); 1752 1753 method = aml_method("PCEJ", 2, AML_NOTSERIALIZED); 1754 aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF)); 1755 aml_append(method, aml_store(aml_arg(0), aml_name("BNUM"))); 1756 aml_append(method, 1757 aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ"))); 1758 aml_append(method, aml_release(aml_name("BLCK"))); 1759 aml_append(method, aml_return(aml_int(0))); 1760 aml_append(scope, method); 1761 1762 aml_append(table, scope); 1763 } 1764 1765 static Aml *build_q35_osc_method(void) 1766 { 1767 Aml *if_ctx; 1768 Aml *if_ctx2; 1769 Aml *else_ctx; 1770 Aml *method; 1771 Aml *a_cwd1 = aml_name("CDW1"); 1772 Aml *a_ctrl = aml_local(0); 1773 1774 method = aml_method("_OSC", 4, AML_NOTSERIALIZED); 1775 aml_append(method, aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1")); 1776 1777 if_ctx = aml_if(aml_equal( 1778 aml_arg(0), aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766"))); 1779 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2")); 1780 aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3")); 1781 1782 aml_append(if_ctx, aml_store(aml_name("CDW3"), a_ctrl)); 1783 1784 /* 1785 * Always allow native PME, AER (no dependencies) 1786 * Allow SHPC (PCI bridges can have SHPC controller) 1787 */ 1788 aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl)); 1789 1790 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1)))); 1791 /* Unknown revision */ 1792 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x08), a_cwd1)); 1793 aml_append(if_ctx, if_ctx2); 1794 1795 if_ctx2 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), a_ctrl))); 1796 /* Capabilities bits were masked */ 1797 aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x10), a_cwd1)); 1798 aml_append(if_ctx, if_ctx2); 1799 1800 /* Update DWORD3 in the buffer */ 1801 aml_append(if_ctx, aml_store(a_ctrl, aml_name("CDW3"))); 1802 aml_append(method, if_ctx); 1803 1804 else_ctx = aml_else(); 1805 /* Unrecognized UUID */ 1806 aml_append(else_ctx, aml_or(a_cwd1, aml_int(4), a_cwd1)); 1807 aml_append(method, else_ctx); 1808 1809 aml_append(method, aml_return(aml_arg(3))); 1810 return method; 1811 } 1812 1813 static void build_smb0(Aml *table, I2CBus *smbus, int devnr, int func) 1814 { 1815 Aml *scope = aml_scope("_SB.PCI0"); 1816 Aml *dev = aml_device("SMB0"); 1817 1818 aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0005"))); 1819 aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func))); 1820 build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0"); 1821 aml_append(scope, dev); 1822 aml_append(table, scope); 1823 } 1824 1825 static void 1826 build_dsdt(GArray *table_data, BIOSLinker *linker, 1827 AcpiPmInfo *pm, AcpiMiscInfo *misc, 1828 Range *pci_hole, Range *pci_hole64, MachineState *machine) 1829 { 1830 CrsRangeEntry *entry; 1831 Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs; 1832 CrsRangeSet crs_range_set; 1833 PCMachineState *pcms = PC_MACHINE(machine); 1834 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine); 1835 X86MachineState *x86ms = X86_MACHINE(machine); 1836 AcpiMcfgInfo mcfg; 1837 uint32_t nr_mem = machine->ram_slots; 1838 int root_bus_limit = 0xFF; 1839 PCIBus *bus = NULL; 1840 TPMIf *tpm = tpm_find(); 1841 int i; 1842 1843 dsdt = init_aml_allocator(); 1844 1845 /* Reserve space for header */ 1846 acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader)); 1847 1848 build_dbg_aml(dsdt); 1849 if (misc->is_piix4) { 1850 sb_scope = aml_scope("_SB"); 1851 dev = aml_device("PCI0"); 1852 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); 1853 aml_append(dev, aml_name_decl("_ADR", aml_int(0))); 1854 aml_append(dev, aml_name_decl("_UID", aml_int(1))); 1855 aml_append(sb_scope, dev); 1856 aml_append(dsdt, sb_scope); 1857 1858 build_hpet_aml(dsdt); 1859 build_piix4_pm(dsdt); 1860 build_piix4_isa_bridge(dsdt); 1861 build_isa_devices_aml(dsdt); 1862 build_piix4_pci_hotplug(dsdt); 1863 build_piix4_pci0_int(dsdt); 1864 } else { 1865 sb_scope = aml_scope("_SB"); 1866 dev = aml_device("PCI0"); 1867 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); 1868 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); 1869 aml_append(dev, aml_name_decl("_ADR", aml_int(0))); 1870 aml_append(dev, aml_name_decl("_UID", aml_int(1))); 1871 aml_append(dev, build_q35_osc_method()); 1872 aml_append(sb_scope, dev); 1873 aml_append(dsdt, sb_scope); 1874 1875 build_hpet_aml(dsdt); 1876 build_q35_isa_bridge(dsdt); 1877 build_isa_devices_aml(dsdt); 1878 build_q35_pci0_int(dsdt); 1879 if (pcms->smbus && !pcmc->do_not_add_smb_acpi) { 1880 build_smb0(dsdt, pcms->smbus, ICH9_SMB_DEV, ICH9_SMB_FUNC); 1881 } 1882 } 1883 1884 if (pcmc->legacy_cpu_hotplug) { 1885 build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base); 1886 } else { 1887 CPUHotplugFeatures opts = { 1888 .acpi_1_compatible = true, .has_legacy_cphp = true 1889 }; 1890 build_cpus_aml(dsdt, machine, opts, pm->cpu_hp_io_base, 1891 "\\_SB.PCI0", "\\_GPE._E02"); 1892 } 1893 1894 if (pcms->memhp_io_base && nr_mem) { 1895 build_memory_hotplug_aml(dsdt, nr_mem, "\\_SB.PCI0", 1896 "\\_GPE._E03", AML_SYSTEM_IO, 1897 pcms->memhp_io_base); 1898 } 1899 1900 scope = aml_scope("_GPE"); 1901 { 1902 aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006"))); 1903 1904 if (misc->is_piix4) { 1905 method = aml_method("_E01", 0, AML_NOTSERIALIZED); 1906 aml_append(method, 1907 aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF)); 1908 aml_append(method, aml_call0("\\_SB.PCI0.PCNT")); 1909 aml_append(method, aml_release(aml_name("\\_SB.PCI0.BLCK"))); 1910 aml_append(scope, method); 1911 } 1912 1913 if (machine->nvdimms_state->is_enabled) { 1914 method = aml_method("_E04", 0, AML_NOTSERIALIZED); 1915 aml_append(method, aml_notify(aml_name("\\_SB.NVDR"), 1916 aml_int(0x80))); 1917 aml_append(scope, method); 1918 } 1919 } 1920 aml_append(dsdt, scope); 1921 1922 crs_range_set_init(&crs_range_set); 1923 bus = PC_MACHINE(machine)->bus; 1924 if (bus) { 1925 QLIST_FOREACH(bus, &bus->child, sibling) { 1926 uint8_t bus_num = pci_bus_num(bus); 1927 uint8_t numa_node = pci_bus_numa_node(bus); 1928 1929 /* look only for expander root buses */ 1930 if (!pci_bus_is_root(bus)) { 1931 continue; 1932 } 1933 1934 if (bus_num < root_bus_limit) { 1935 root_bus_limit = bus_num - 1; 1936 } 1937 1938 scope = aml_scope("\\_SB"); 1939 dev = aml_device("PC%.02X", bus_num); 1940 aml_append(dev, aml_name_decl("_UID", aml_int(bus_num))); 1941 aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); 1942 if (pci_bus_is_express(bus)) { 1943 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); 1944 aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); 1945 aml_append(dev, build_q35_osc_method()); 1946 } else { 1947 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); 1948 } 1949 1950 if (numa_node != NUMA_NODE_UNASSIGNED) { 1951 aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node))); 1952 } 1953 1954 aml_append(dev, build_prt(false)); 1955 crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set); 1956 aml_append(dev, aml_name_decl("_CRS", crs)); 1957 aml_append(scope, dev); 1958 aml_append(dsdt, scope); 1959 } 1960 } 1961 1962 /* 1963 * At this point crs_range_set has all the ranges used by pci 1964 * busses *other* than PCI0. These ranges will be excluded from 1965 * the PCI0._CRS. Add mmconfig to the set so it will be excluded 1966 * too. 1967 */ 1968 if (acpi_get_mcfg(&mcfg)) { 1969 crs_range_insert(crs_range_set.mem_ranges, 1970 mcfg.base, mcfg.base + mcfg.size - 1); 1971 } 1972 1973 scope = aml_scope("\\_SB.PCI0"); 1974 /* build PCI0._CRS */ 1975 crs = aml_resource_template(); 1976 aml_append(crs, 1977 aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, 1978 0x0000, 0x0, root_bus_limit, 1979 0x0000, root_bus_limit + 1)); 1980 aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08)); 1981 1982 aml_append(crs, 1983 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 1984 AML_POS_DECODE, AML_ENTIRE_RANGE, 1985 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8)); 1986 1987 crs_replace_with_free_ranges(crs_range_set.io_ranges, 0x0D00, 0xFFFF); 1988 for (i = 0; i < crs_range_set.io_ranges->len; i++) { 1989 entry = g_ptr_array_index(crs_range_set.io_ranges, i); 1990 aml_append(crs, 1991 aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, 1992 AML_POS_DECODE, AML_ENTIRE_RANGE, 1993 0x0000, entry->base, entry->limit, 1994 0x0000, entry->limit - entry->base + 1)); 1995 } 1996 1997 aml_append(crs, 1998 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 1999 AML_CACHEABLE, AML_READ_WRITE, 2000 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000)); 2001 2002 crs_replace_with_free_ranges(crs_range_set.mem_ranges, 2003 range_lob(pci_hole), 2004 range_upb(pci_hole)); 2005 for (i = 0; i < crs_range_set.mem_ranges->len; i++) { 2006 entry = g_ptr_array_index(crs_range_set.mem_ranges, i); 2007 aml_append(crs, 2008 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 2009 AML_NON_CACHEABLE, AML_READ_WRITE, 2010 0, entry->base, entry->limit, 2011 0, entry->limit - entry->base + 1)); 2012 } 2013 2014 if (!range_is_empty(pci_hole64)) { 2015 crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges, 2016 range_lob(pci_hole64), 2017 range_upb(pci_hole64)); 2018 for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) { 2019 entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i); 2020 aml_append(crs, 2021 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, 2022 AML_MAX_FIXED, 2023 AML_CACHEABLE, AML_READ_WRITE, 2024 0, entry->base, entry->limit, 2025 0, entry->limit - entry->base + 1)); 2026 } 2027 } 2028 2029 if (TPM_IS_TIS(tpm_find())) { 2030 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE, 2031 TPM_TIS_ADDR_SIZE, AML_READ_WRITE)); 2032 } 2033 aml_append(scope, aml_name_decl("_CRS", crs)); 2034 2035 /* reserve GPE0 block resources */ 2036 dev = aml_device("GPE0"); 2037 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 2038 aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources"))); 2039 /* device present, functioning, decoding, not shown in UI */ 2040 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 2041 crs = aml_resource_template(); 2042 aml_append(crs, 2043 aml_io( 2044 AML_DECODE16, 2045 pm->fadt.gpe0_blk.address, 2046 pm->fadt.gpe0_blk.address, 2047 1, 2048 pm->fadt.gpe0_blk.bit_width / 8) 2049 ); 2050 aml_append(dev, aml_name_decl("_CRS", crs)); 2051 aml_append(scope, dev); 2052 2053 crs_range_set_free(&crs_range_set); 2054 2055 /* reserve PCIHP resources */ 2056 if (pm->pcihp_io_len) { 2057 dev = aml_device("PHPR"); 2058 aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 2059 aml_append(dev, 2060 aml_name_decl("_UID", aml_string("PCI Hotplug resources"))); 2061 /* device present, functioning, decoding, not shown in UI */ 2062 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 2063 crs = aml_resource_template(); 2064 aml_append(crs, 2065 aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1, 2066 pm->pcihp_io_len) 2067 ); 2068 aml_append(dev, aml_name_decl("_CRS", crs)); 2069 aml_append(scope, dev); 2070 } 2071 aml_append(dsdt, scope); 2072 2073 /* create S3_ / S4_ / S5_ packages if necessary */ 2074 scope = aml_scope("\\"); 2075 if (!pm->s3_disabled) { 2076 pkg = aml_package(4); 2077 aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */ 2078 aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ 2079 aml_append(pkg, aml_int(0)); /* reserved */ 2080 aml_append(pkg, aml_int(0)); /* reserved */ 2081 aml_append(scope, aml_name_decl("_S3", pkg)); 2082 } 2083 2084 if (!pm->s4_disabled) { 2085 pkg = aml_package(4); 2086 aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */ 2087 /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ 2088 aml_append(pkg, aml_int(pm->s4_val)); 2089 aml_append(pkg, aml_int(0)); /* reserved */ 2090 aml_append(pkg, aml_int(0)); /* reserved */ 2091 aml_append(scope, aml_name_decl("_S4", pkg)); 2092 } 2093 2094 pkg = aml_package(4); 2095 aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */ 2096 aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */ 2097 aml_append(pkg, aml_int(0)); /* reserved */ 2098 aml_append(pkg, aml_int(0)); /* reserved */ 2099 aml_append(scope, aml_name_decl("_S5", pkg)); 2100 aml_append(dsdt, scope); 2101 2102 /* create fw_cfg node, unconditionally */ 2103 { 2104 /* when using port i/o, the 8-bit data register *always* overlaps 2105 * with half of the 16-bit control register. Hence, the total size 2106 * of the i/o region used is FW_CFG_CTL_SIZE; when using DMA, the 2107 * DMA control register is located at FW_CFG_DMA_IO_BASE + 4 */ 2108 uint8_t io_size = object_property_get_bool(OBJECT(x86ms->fw_cfg), 2109 "dma_enabled", NULL) ? 2110 ROUND_UP(FW_CFG_CTL_SIZE, 4) + sizeof(dma_addr_t) : 2111 FW_CFG_CTL_SIZE; 2112 2113 scope = aml_scope("\\_SB.PCI0"); 2114 dev = aml_device("FWCF"); 2115 2116 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002"))); 2117 2118 /* device present, functioning, decoding, not shown in UI */ 2119 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 2120 2121 crs = aml_resource_template(); 2122 aml_append(crs, 2123 aml_io(AML_DECODE16, FW_CFG_IO_BASE, FW_CFG_IO_BASE, 0x01, io_size) 2124 ); 2125 aml_append(dev, aml_name_decl("_CRS", crs)); 2126 2127 aml_append(scope, dev); 2128 aml_append(dsdt, scope); 2129 } 2130 2131 if (misc->applesmc_io_base) { 2132 scope = aml_scope("\\_SB.PCI0.ISA"); 2133 dev = aml_device("SMC"); 2134 2135 aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0001"))); 2136 /* device present, functioning, decoding, not shown in UI */ 2137 aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); 2138 2139 crs = aml_resource_template(); 2140 aml_append(crs, 2141 aml_io(AML_DECODE16, misc->applesmc_io_base, misc->applesmc_io_base, 2142 0x01, APPLESMC_MAX_DATA_LENGTH) 2143 ); 2144 aml_append(crs, aml_irq_no_flags(6)); 2145 aml_append(dev, aml_name_decl("_CRS", crs)); 2146 2147 aml_append(scope, dev); 2148 aml_append(dsdt, scope); 2149 } 2150 2151 if (misc->pvpanic_port) { 2152 scope = aml_scope("\\_SB.PCI0.ISA"); 2153 2154 dev = aml_device("PEVT"); 2155 aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0001"))); 2156 2157 crs = aml_resource_template(); 2158 aml_append(crs, 2159 aml_io(AML_DECODE16, misc->pvpanic_port, misc->pvpanic_port, 1, 1) 2160 ); 2161 aml_append(dev, aml_name_decl("_CRS", crs)); 2162 2163 aml_append(dev, aml_operation_region("PEOR", AML_SYSTEM_IO, 2164 aml_int(misc->pvpanic_port), 1)); 2165 field = aml_field("PEOR", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); 2166 aml_append(field, aml_named_field("PEPT", 8)); 2167 aml_append(dev, field); 2168 2169 /* device present, functioning, decoding, shown in UI */ 2170 aml_append(dev, aml_name_decl("_STA", aml_int(0xF))); 2171 2172 method = aml_method("RDPT", 0, AML_NOTSERIALIZED); 2173 aml_append(method, aml_store(aml_name("PEPT"), aml_local(0))); 2174 aml_append(method, aml_return(aml_local(0))); 2175 aml_append(dev, method); 2176 2177 method = aml_method("WRPT", 1, AML_NOTSERIALIZED); 2178 aml_append(method, aml_store(aml_arg(0), aml_name("PEPT"))); 2179 aml_append(dev, method); 2180 2181 aml_append(scope, dev); 2182 aml_append(dsdt, scope); 2183 } 2184 2185 sb_scope = aml_scope("\\_SB"); 2186 { 2187 Object *pci_host; 2188 PCIBus *bus = NULL; 2189 2190 pci_host = acpi_get_i386_pci_host(); 2191 if (pci_host) { 2192 bus = PCI_HOST_BRIDGE(pci_host)->bus; 2193 } 2194 2195 if (bus) { 2196 Aml *scope = aml_scope("PCI0"); 2197 /* Scan all PCI buses. Generate tables to support hotplug. */ 2198 build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en); 2199 2200 if (TPM_IS_TIS(tpm)) { 2201 if (misc->tpm_version == TPM_VERSION_2_0) { 2202 dev = aml_device("TPM"); 2203 aml_append(dev, aml_name_decl("_HID", 2204 aml_string("MSFT0101"))); 2205 } else { 2206 dev = aml_device("ISA.TPM"); 2207 aml_append(dev, aml_name_decl("_HID", 2208 aml_eisaid("PNP0C31"))); 2209 } 2210 2211 aml_append(dev, aml_name_decl("_STA", aml_int(0xF))); 2212 crs = aml_resource_template(); 2213 aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE, 2214 TPM_TIS_ADDR_SIZE, AML_READ_WRITE)); 2215 /* 2216 FIXME: TPM_TIS_IRQ=5 conflicts with PNP0C0F irqs, 2217 Rewrite to take IRQ from TPM device model and 2218 fix default IRQ value there to use some unused IRQ 2219 */ 2220 /* aml_append(crs, aml_irq_no_flags(TPM_TIS_IRQ)); */ 2221 aml_append(dev, aml_name_decl("_CRS", crs)); 2222 2223 tpm_build_ppi_acpi(tpm, dev); 2224 2225 aml_append(scope, dev); 2226 } 2227 2228 aml_append(sb_scope, scope); 2229 } 2230 } 2231 2232 if (TPM_IS_CRB(tpm)) { 2233 dev = aml_device("TPM"); 2234 aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); 2235 crs = aml_resource_template(); 2236 aml_append(crs, aml_memory32_fixed(TPM_CRB_ADDR_BASE, 2237 TPM_CRB_ADDR_SIZE, AML_READ_WRITE)); 2238 aml_append(dev, aml_name_decl("_CRS", crs)); 2239 2240 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 2241 aml_append(method, aml_return(aml_int(0x0f))); 2242 aml_append(dev, method); 2243 2244 tpm_build_ppi_acpi(tpm, dev); 2245 2246 aml_append(sb_scope, dev); 2247 } 2248 2249 aml_append(dsdt, sb_scope); 2250 2251 /* copy AML table into ACPI tables blob and patch header there */ 2252 g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); 2253 build_header(linker, table_data, 2254 (void *)(table_data->data + table_data->len - dsdt->buf->len), 2255 "DSDT", dsdt->buf->len, 1, NULL, NULL); 2256 free_aml_allocator(); 2257 } 2258 2259 static void 2260 build_hpet(GArray *table_data, BIOSLinker *linker) 2261 { 2262 Acpi20Hpet *hpet; 2263 2264 hpet = acpi_data_push(table_data, sizeof(*hpet)); 2265 /* Note timer_block_id value must be kept in sync with value advertised by 2266 * emulated hpet 2267 */ 2268 hpet->timer_block_id = cpu_to_le32(0x8086a201); 2269 hpet->addr.address = cpu_to_le64(HPET_BASE); 2270 build_header(linker, table_data, 2271 (void *)hpet, "HPET", sizeof(*hpet), 1, NULL, NULL); 2272 } 2273 2274 static void 2275 build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog) 2276 { 2277 Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa); 2278 unsigned log_addr_size = sizeof(tcpa->log_area_start_address); 2279 unsigned log_addr_offset = 2280 (char *)&tcpa->log_area_start_address - table_data->data; 2281 2282 tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT); 2283 tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE); 2284 acpi_data_push(tcpalog, le32_to_cpu(tcpa->log_area_minimum_length)); 2285 2286 bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, tcpalog, 1, 2287 false /* high memory */); 2288 2289 /* log area start address to be filled by Guest linker */ 2290 bios_linker_loader_add_pointer(linker, 2291 ACPI_BUILD_TABLE_FILE, log_addr_offset, log_addr_size, 2292 ACPI_BUILD_TPMLOG_FILE, 0); 2293 2294 build_header(linker, table_data, 2295 (void *)tcpa, "TCPA", sizeof(*tcpa), 2, NULL, NULL); 2296 } 2297 2298 static void 2299 build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog) 2300 { 2301 Acpi20TPM2 *tpm2_ptr = acpi_data_push(table_data, sizeof *tpm2_ptr); 2302 unsigned log_addr_size = sizeof(tpm2_ptr->log_area_start_address); 2303 unsigned log_addr_offset = 2304 (char *)&tpm2_ptr->log_area_start_address - table_data->data; 2305 2306 tpm2_ptr->platform_class = cpu_to_le16(TPM2_ACPI_CLASS_CLIENT); 2307 if (TPM_IS_TIS(tpm_find())) { 2308 tpm2_ptr->control_area_address = cpu_to_le64(0); 2309 tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_MMIO); 2310 } else if (TPM_IS_CRB(tpm_find())) { 2311 tpm2_ptr->control_area_address = cpu_to_le64(TPM_CRB_ADDR_CTRL); 2312 tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_CRB); 2313 } else { 2314 g_warn_if_reached(); 2315 } 2316 2317 tpm2_ptr->log_area_minimum_length = 2318 cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE); 2319 2320 /* log area start address to be filled by Guest linker */ 2321 bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, 2322 log_addr_offset, log_addr_size, 2323 ACPI_BUILD_TPMLOG_FILE, 0); 2324 build_header(linker, table_data, 2325 (void *)tpm2_ptr, "TPM2", sizeof(*tpm2_ptr), 4, NULL, NULL); 2326 } 2327 2328 #define HOLE_640K_START (640 * KiB) 2329 #define HOLE_640K_END (1 * MiB) 2330 2331 static void 2332 build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) 2333 { 2334 AcpiSystemResourceAffinityTable *srat; 2335 AcpiSratMemoryAffinity *numamem; 2336 2337 int i; 2338 int srat_start, numa_start, slots; 2339 uint64_t mem_len, mem_base, next_base; 2340 MachineClass *mc = MACHINE_GET_CLASS(machine); 2341 X86MachineState *x86ms = X86_MACHINE(machine); 2342 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine); 2343 PCMachineState *pcms = PC_MACHINE(machine); 2344 ram_addr_t hotplugabble_address_space_size = 2345 object_property_get_int(OBJECT(pcms), PC_MACHINE_DEVMEM_REGION_SIZE, 2346 NULL); 2347 2348 srat_start = table_data->len; 2349 2350 srat = acpi_data_push(table_data, sizeof *srat); 2351 srat->reserved1 = cpu_to_le32(1); 2352 2353 for (i = 0; i < apic_ids->len; i++) { 2354 int node_id = apic_ids->cpus[i].props.node_id; 2355 uint32_t apic_id = apic_ids->cpus[i].arch_id; 2356 2357 if (apic_id < 255) { 2358 AcpiSratProcessorAffinity *core; 2359 2360 core = acpi_data_push(table_data, sizeof *core); 2361 core->type = ACPI_SRAT_PROCESSOR_APIC; 2362 core->length = sizeof(*core); 2363 core->local_apic_id = apic_id; 2364 core->proximity_lo = node_id; 2365 memset(core->proximity_hi, 0, 3); 2366 core->local_sapic_eid = 0; 2367 core->flags = cpu_to_le32(1); 2368 } else { 2369 AcpiSratProcessorX2ApicAffinity *core; 2370 2371 core = acpi_data_push(table_data, sizeof *core); 2372 core->type = ACPI_SRAT_PROCESSOR_x2APIC; 2373 core->length = sizeof(*core); 2374 core->x2apic_id = cpu_to_le32(apic_id); 2375 core->proximity_domain = cpu_to_le32(node_id); 2376 core->flags = cpu_to_le32(1); 2377 } 2378 } 2379 2380 2381 /* the memory map is a bit tricky, it contains at least one hole 2382 * from 640k-1M and possibly another one from 3.5G-4G. 2383 */ 2384 next_base = 0; 2385 numa_start = table_data->len; 2386 2387 for (i = 1; i < pcms->numa_nodes + 1; ++i) { 2388 mem_base = next_base; 2389 mem_len = pcms->node_mem[i - 1]; 2390 next_base = mem_base + mem_len; 2391 2392 /* Cut out the 640K hole */ 2393 if (mem_base <= HOLE_640K_START && 2394 next_base > HOLE_640K_START) { 2395 mem_len -= next_base - HOLE_640K_START; 2396 if (mem_len > 0) { 2397 numamem = acpi_data_push(table_data, sizeof *numamem); 2398 build_srat_memory(numamem, mem_base, mem_len, i - 1, 2399 MEM_AFFINITY_ENABLED); 2400 } 2401 2402 /* Check for the rare case: 640K < RAM < 1M */ 2403 if (next_base <= HOLE_640K_END) { 2404 next_base = HOLE_640K_END; 2405 continue; 2406 } 2407 mem_base = HOLE_640K_END; 2408 mem_len = next_base - HOLE_640K_END; 2409 } 2410 2411 /* Cut out the ACPI_PCI hole */ 2412 if (mem_base <= x86ms->below_4g_mem_size && 2413 next_base > x86ms->below_4g_mem_size) { 2414 mem_len -= next_base - x86ms->below_4g_mem_size; 2415 if (mem_len > 0) { 2416 numamem = acpi_data_push(table_data, sizeof *numamem); 2417 build_srat_memory(numamem, mem_base, mem_len, i - 1, 2418 MEM_AFFINITY_ENABLED); 2419 } 2420 mem_base = 1ULL << 32; 2421 mem_len = next_base - x86ms->below_4g_mem_size; 2422 next_base = mem_base + mem_len; 2423 } 2424 2425 if (mem_len > 0) { 2426 numamem = acpi_data_push(table_data, sizeof *numamem); 2427 build_srat_memory(numamem, mem_base, mem_len, i - 1, 2428 MEM_AFFINITY_ENABLED); 2429 } 2430 } 2431 slots = (table_data->len - numa_start) / sizeof *numamem; 2432 for (; slots < pcms->numa_nodes + 2; slots++) { 2433 numamem = acpi_data_push(table_data, sizeof *numamem); 2434 build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS); 2435 } 2436 2437 /* 2438 * Entry is required for Windows to enable memory hotplug in OS 2439 * and for Linux to enable SWIOTLB when booted with less than 2440 * 4G of RAM. Windows works better if the entry sets proximity 2441 * to the highest NUMA node in the machine. 2442 * Memory devices may override proximity set by this entry, 2443 * providing _PXM method if necessary. 2444 */ 2445 if (hotplugabble_address_space_size) { 2446 numamem = acpi_data_push(table_data, sizeof *numamem); 2447 build_srat_memory(numamem, machine->device_memory->base, 2448 hotplugabble_address_space_size, pcms->numa_nodes - 1, 2449 MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); 2450 } 2451 2452 build_header(linker, table_data, 2453 (void *)(table_data->data + srat_start), 2454 "SRAT", 2455 table_data->len - srat_start, 1, NULL, NULL); 2456 } 2457 2458 /* 2459 * VT-d spec 8.1 DMA Remapping Reporting Structure 2460 * (version Oct. 2014 or later) 2461 */ 2462 static void 2463 build_dmar_q35(GArray *table_data, BIOSLinker *linker) 2464 { 2465 int dmar_start = table_data->len; 2466 2467 AcpiTableDmar *dmar; 2468 AcpiDmarHardwareUnit *drhd; 2469 AcpiDmarRootPortATS *atsr; 2470 uint8_t dmar_flags = 0; 2471 X86IOMMUState *iommu = x86_iommu_get_default(); 2472 AcpiDmarDeviceScope *scope = NULL; 2473 /* Root complex IOAPIC use one path[0] only */ 2474 size_t ioapic_scope_size = sizeof(*scope) + sizeof(scope->path[0]); 2475 IntelIOMMUState *intel_iommu = INTEL_IOMMU_DEVICE(iommu); 2476 2477 assert(iommu); 2478 if (x86_iommu_ir_supported(iommu)) { 2479 dmar_flags |= 0x1; /* Flags: 0x1: INT_REMAP */ 2480 } 2481 2482 dmar = acpi_data_push(table_data, sizeof(*dmar)); 2483 dmar->host_address_width = intel_iommu->aw_bits - 1; 2484 dmar->flags = dmar_flags; 2485 2486 /* DMAR Remapping Hardware Unit Definition structure */ 2487 drhd = acpi_data_push(table_data, sizeof(*drhd) + ioapic_scope_size); 2488 drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT); 2489 drhd->length = cpu_to_le16(sizeof(*drhd) + ioapic_scope_size); 2490 drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL; 2491 drhd->pci_segment = cpu_to_le16(0); 2492 drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR); 2493 2494 /* Scope definition for the root-complex IOAPIC. See VT-d spec 2495 * 8.3.1 (version Oct. 2014 or later). */ 2496 scope = &drhd->scope[0]; 2497 scope->entry_type = 0x03; /* Type: 0x03 for IOAPIC */ 2498 scope->length = ioapic_scope_size; 2499 scope->enumeration_id = ACPI_BUILD_IOAPIC_ID; 2500 scope->bus = Q35_PSEUDO_BUS_PLATFORM; 2501 scope->path[0].device = PCI_SLOT(Q35_PSEUDO_DEVFN_IOAPIC); 2502 scope->path[0].function = PCI_FUNC(Q35_PSEUDO_DEVFN_IOAPIC); 2503 2504 if (iommu->dt_supported) { 2505 atsr = acpi_data_push(table_data, sizeof(*atsr)); 2506 atsr->type = cpu_to_le16(ACPI_DMAR_TYPE_ATSR); 2507 atsr->length = cpu_to_le16(sizeof(*atsr)); 2508 atsr->flags = ACPI_DMAR_ATSR_ALL_PORTS; 2509 atsr->pci_segment = cpu_to_le16(0); 2510 } 2511 2512 build_header(linker, table_data, (void *)(table_data->data + dmar_start), 2513 "DMAR", table_data->len - dmar_start, 1, NULL, NULL); 2514 } 2515 /* 2516 * IVRS table as specified in AMD IOMMU Specification v2.62, Section 5.2 2517 * accessible here http://support.amd.com/TechDocs/48882_IOMMU.pdf 2518 */ 2519 #define IOAPIC_SB_DEVID (uint64_t)PCI_BUILD_BDF(0, PCI_DEVFN(0x14, 0)) 2520 2521 static void 2522 build_amd_iommu(GArray *table_data, BIOSLinker *linker) 2523 { 2524 int ivhd_table_len = 28; 2525 int iommu_start = table_data->len; 2526 AMDVIState *s = AMD_IOMMU_DEVICE(x86_iommu_get_default()); 2527 2528 /* IVRS header */ 2529 acpi_data_push(table_data, sizeof(AcpiTableHeader)); 2530 /* IVinfo - IO virtualization information common to all 2531 * IOMMU units in a system 2532 */ 2533 build_append_int_noprefix(table_data, 40UL << 8/* PASize */, 4); 2534 /* reserved */ 2535 build_append_int_noprefix(table_data, 0, 8); 2536 2537 /* IVHD definition - type 10h */ 2538 build_append_int_noprefix(table_data, 0x10, 1); 2539 /* virtualization flags */ 2540 build_append_int_noprefix(table_data, 2541 (1UL << 0) | /* HtTunEn */ 2542 (1UL << 4) | /* iotblSup */ 2543 (1UL << 6) | /* PrefSup */ 2544 (1UL << 7), /* PPRSup */ 2545 1); 2546 2547 /* 2548 * When interrupt remapping is supported, we add a special IVHD device 2549 * for type IO-APIC. 2550 */ 2551 if (x86_iommu_ir_supported(x86_iommu_get_default())) { 2552 ivhd_table_len += 8; 2553 } 2554 /* IVHD length */ 2555 build_append_int_noprefix(table_data, ivhd_table_len, 2); 2556 /* DeviceID */ 2557 build_append_int_noprefix(table_data, s->devid, 2); 2558 /* Capability offset */ 2559 build_append_int_noprefix(table_data, s->capab_offset, 2); 2560 /* IOMMU base address */ 2561 build_append_int_noprefix(table_data, s->mmio.addr, 8); 2562 /* PCI Segment Group */ 2563 build_append_int_noprefix(table_data, 0, 2); 2564 /* IOMMU info */ 2565 build_append_int_noprefix(table_data, 0, 2); 2566 /* IOMMU Feature Reporting */ 2567 build_append_int_noprefix(table_data, 2568 (48UL << 30) | /* HATS */ 2569 (48UL << 28) | /* GATS */ 2570 (1UL << 2) | /* GTSup */ 2571 (1UL << 6), /* GASup */ 2572 4); 2573 /* 2574 * Type 1 device entry reporting all devices 2575 * These are 4-byte device entries currently reporting the range of 2576 * Refer to Spec - Table 95:IVHD Device Entry Type Codes(4-byte) 2577 */ 2578 build_append_int_noprefix(table_data, 0x0000001, 4); 2579 2580 /* 2581 * Add a special IVHD device type. 2582 * Refer to spec - Table 95: IVHD device entry type codes 2583 * 2584 * Linux IOMMU driver checks for the special IVHD device (type IO-APIC). 2585 * See Linux kernel commit 'c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059' 2586 */ 2587 if (x86_iommu_ir_supported(x86_iommu_get_default())) { 2588 build_append_int_noprefix(table_data, 2589 (0x1ull << 56) | /* type IOAPIC */ 2590 (IOAPIC_SB_DEVID << 40) | /* IOAPIC devid */ 2591 0x48, /* special device */ 2592 8); 2593 } 2594 2595 build_header(linker, table_data, (void *)(table_data->data + iommu_start), 2596 "IVRS", table_data->len - iommu_start, 1, NULL, NULL); 2597 } 2598 2599 typedef 2600 struct AcpiBuildState { 2601 /* Copy of table in RAM (for patching). */ 2602 MemoryRegion *table_mr; 2603 /* Is table patched? */ 2604 uint8_t patched; 2605 void *rsdp; 2606 MemoryRegion *rsdp_mr; 2607 MemoryRegion *linker_mr; 2608 } AcpiBuildState; 2609 2610 static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg) 2611 { 2612 Object *pci_host; 2613 QObject *o; 2614 2615 pci_host = acpi_get_i386_pci_host(); 2616 g_assert(pci_host); 2617 2618 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL); 2619 if (!o) { 2620 return false; 2621 } 2622 mcfg->base = qnum_get_uint(qobject_to(QNum, o)); 2623 qobject_unref(o); 2624 if (mcfg->base == PCIE_BASE_ADDR_UNMAPPED) { 2625 return false; 2626 } 2627 2628 o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL); 2629 assert(o); 2630 mcfg->size = qnum_get_uint(qobject_to(QNum, o)); 2631 qobject_unref(o); 2632 return true; 2633 } 2634 2635 static 2636 void acpi_build(AcpiBuildTables *tables, MachineState *machine) 2637 { 2638 PCMachineState *pcms = PC_MACHINE(machine); 2639 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); 2640 X86MachineState *x86ms = X86_MACHINE(machine); 2641 GArray *table_offsets; 2642 unsigned facs, dsdt, rsdt, fadt; 2643 AcpiPmInfo pm; 2644 AcpiMiscInfo misc; 2645 AcpiMcfgInfo mcfg; 2646 Range pci_hole, pci_hole64; 2647 uint8_t *u; 2648 size_t aml_len = 0; 2649 GArray *tables_blob = tables->table_data; 2650 AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL }; 2651 Object *vmgenid_dev; 2652 2653 acpi_get_pm_info(machine, &pm); 2654 acpi_get_misc_info(&misc); 2655 acpi_get_pci_holes(&pci_hole, &pci_hole64); 2656 acpi_get_slic_oem(&slic_oem); 2657 2658 table_offsets = g_array_new(false, true /* clear */, 2659 sizeof(uint32_t)); 2660 ACPI_BUILD_DPRINTF("init ACPI tables\n"); 2661 2662 bios_linker_loader_alloc(tables->linker, 2663 ACPI_BUILD_TABLE_FILE, tables_blob, 2664 64 /* Ensure FACS is aligned */, 2665 false /* high memory */); 2666 2667 /* 2668 * FACS is pointed to by FADT. 2669 * We place it first since it's the only table that has alignment 2670 * requirements. 2671 */ 2672 facs = tables_blob->len; 2673 build_facs(tables_blob); 2674 2675 /* DSDT is pointed to by FADT */ 2676 dsdt = tables_blob->len; 2677 build_dsdt(tables_blob, tables->linker, &pm, &misc, 2678 &pci_hole, &pci_hole64, machine); 2679 2680 /* Count the size of the DSDT and SSDT, we will need it for legacy 2681 * sizing of ACPI tables. 2682 */ 2683 aml_len += tables_blob->len - dsdt; 2684 2685 /* ACPI tables pointed to by RSDT */ 2686 fadt = tables_blob->len; 2687 acpi_add_table(table_offsets, tables_blob); 2688 pm.fadt.facs_tbl_offset = &facs; 2689 pm.fadt.dsdt_tbl_offset = &dsdt; 2690 pm.fadt.xdsdt_tbl_offset = &dsdt; 2691 build_fadt(tables_blob, tables->linker, &pm.fadt, 2692 slic_oem.id, slic_oem.table_id); 2693 aml_len += tables_blob->len - fadt; 2694 2695 acpi_add_table(table_offsets, tables_blob); 2696 build_madt(tables_blob, tables->linker, pcms); 2697 2698 vmgenid_dev = find_vmgenid_dev(); 2699 if (vmgenid_dev) { 2700 acpi_add_table(table_offsets, tables_blob); 2701 vmgenid_build_acpi(VMGENID(vmgenid_dev), tables_blob, 2702 tables->vmgenid, tables->linker); 2703 } 2704 2705 if (misc.has_hpet) { 2706 acpi_add_table(table_offsets, tables_blob); 2707 build_hpet(tables_blob, tables->linker); 2708 } 2709 if (misc.tpm_version != TPM_VERSION_UNSPEC) { 2710 acpi_add_table(table_offsets, tables_blob); 2711 build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog); 2712 2713 if (misc.tpm_version == TPM_VERSION_2_0) { 2714 acpi_add_table(table_offsets, tables_blob); 2715 build_tpm2(tables_blob, tables->linker, tables->tcpalog); 2716 } 2717 } 2718 if (pcms->numa_nodes) { 2719 acpi_add_table(table_offsets, tables_blob); 2720 build_srat(tables_blob, tables->linker, machine); 2721 if (machine->numa_state->have_numa_distance) { 2722 acpi_add_table(table_offsets, tables_blob); 2723 build_slit(tables_blob, tables->linker, machine); 2724 } 2725 } 2726 if (acpi_get_mcfg(&mcfg)) { 2727 acpi_add_table(table_offsets, tables_blob); 2728 build_mcfg(tables_blob, tables->linker, &mcfg); 2729 } 2730 if (x86_iommu_get_default()) { 2731 IommuType IOMMUType = x86_iommu_get_type(); 2732 if (IOMMUType == TYPE_AMD) { 2733 acpi_add_table(table_offsets, tables_blob); 2734 build_amd_iommu(tables_blob, tables->linker); 2735 } else if (IOMMUType == TYPE_INTEL) { 2736 acpi_add_table(table_offsets, tables_blob); 2737 build_dmar_q35(tables_blob, tables->linker); 2738 } 2739 } 2740 if (machine->nvdimms_state->is_enabled) { 2741 nvdimm_build_acpi(table_offsets, tables_blob, tables->linker, 2742 machine->nvdimms_state, machine->ram_slots); 2743 } 2744 2745 /* Add tables supplied by user (if any) */ 2746 for (u = acpi_table_first(); u; u = acpi_table_next(u)) { 2747 unsigned len = acpi_table_len(u); 2748 2749 acpi_add_table(table_offsets, tables_blob); 2750 g_array_append_vals(tables_blob, u, len); 2751 } 2752 2753 /* RSDT is pointed to by RSDP */ 2754 rsdt = tables_blob->len; 2755 build_rsdt(tables_blob, tables->linker, table_offsets, 2756 slic_oem.id, slic_oem.table_id); 2757 2758 /* RSDP is in FSEG memory, so allocate it separately */ 2759 { 2760 AcpiRsdpData rsdp_data = { 2761 .revision = 0, 2762 .oem_id = ACPI_BUILD_APPNAME6, 2763 .xsdt_tbl_offset = NULL, 2764 .rsdt_tbl_offset = &rsdt, 2765 }; 2766 build_rsdp(tables->rsdp, tables->linker, &rsdp_data); 2767 if (!pcmc->rsdp_in_ram) { 2768 /* We used to allocate some extra space for RSDP revision 2 but 2769 * only used the RSDP revision 0 space. The extra bytes were 2770 * zeroed out and not used. 2771 * Here we continue wasting those extra 16 bytes to make sure we 2772 * don't break migration for machine types 2.2 and older due to 2773 * RSDP blob size mismatch. 2774 */ 2775 build_append_int_noprefix(tables->rsdp, 0, 16); 2776 } 2777 } 2778 2779 /* We'll expose it all to Guest so we want to reduce 2780 * chance of size changes. 2781 * 2782 * We used to align the tables to 4k, but of course this would 2783 * too simple to be enough. 4k turned out to be too small an 2784 * alignment very soon, and in fact it is almost impossible to 2785 * keep the table size stable for all (max_cpus, max_memory_slots) 2786 * combinations. So the table size is always 64k for pc-i440fx-2.1 2787 * and we give an error if the table grows beyond that limit. 2788 * 2789 * We still have the problem of migrating from "-M pc-i440fx-2.0". For 2790 * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables 2791 * than 2.0 and we can always pad the smaller tables with zeros. We can 2792 * then use the exact size of the 2.0 tables. 2793 * 2794 * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration. 2795 */ 2796 if (pcmc->legacy_acpi_table_size) { 2797 /* Subtracting aml_len gives the size of fixed tables. Then add the 2798 * size of the PIIX4 DSDT/SSDT in QEMU 2.0. 2799 */ 2800 int legacy_aml_len = 2801 pcmc->legacy_acpi_table_size + 2802 ACPI_BUILD_LEGACY_CPU_AML_SIZE * x86ms->apic_id_limit; 2803 int legacy_table_size = 2804 ROUND_UP(tables_blob->len - aml_len + legacy_aml_len, 2805 ACPI_BUILD_ALIGN_SIZE); 2806 if (tables_blob->len > legacy_table_size) { 2807 /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */ 2808 warn_report("ACPI table size %u exceeds %d bytes," 2809 " migration may not work", 2810 tables_blob->len, legacy_table_size); 2811 error_printf("Try removing CPUs, NUMA nodes, memory slots" 2812 " or PCI bridges."); 2813 } 2814 g_array_set_size(tables_blob, legacy_table_size); 2815 } else { 2816 /* Make sure we have a buffer in case we need to resize the tables. */ 2817 if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) { 2818 /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */ 2819 warn_report("ACPI table size %u exceeds %d bytes," 2820 " migration may not work", 2821 tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2); 2822 error_printf("Try removing CPUs, NUMA nodes, memory slots" 2823 " or PCI bridges."); 2824 } 2825 acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); 2826 } 2827 2828 acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE); 2829 2830 /* Cleanup memory that's no longer used. */ 2831 g_array_free(table_offsets, true); 2832 } 2833 2834 static void acpi_ram_update(MemoryRegion *mr, GArray *data) 2835 { 2836 uint32_t size = acpi_data_len(data); 2837 2838 /* Make sure RAM size is correct - in case it got changed e.g. by migration */ 2839 memory_region_ram_resize(mr, size, &error_abort); 2840 2841 memcpy(memory_region_get_ram_ptr(mr), data->data, size); 2842 memory_region_set_dirty(mr, 0, size); 2843 } 2844 2845 static void acpi_build_update(void *build_opaque) 2846 { 2847 AcpiBuildState *build_state = build_opaque; 2848 AcpiBuildTables tables; 2849 2850 /* No state to update or already patched? Nothing to do. */ 2851 if (!build_state || build_state->patched) { 2852 return; 2853 } 2854 build_state->patched = 1; 2855 2856 acpi_build_tables_init(&tables); 2857 2858 acpi_build(&tables, MACHINE(qdev_get_machine())); 2859 2860 acpi_ram_update(build_state->table_mr, tables.table_data); 2861 2862 if (build_state->rsdp) { 2863 memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp)); 2864 } else { 2865 acpi_ram_update(build_state->rsdp_mr, tables.rsdp); 2866 } 2867 2868 acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); 2869 acpi_build_tables_cleanup(&tables, true); 2870 } 2871 2872 static void acpi_build_reset(void *build_opaque) 2873 { 2874 AcpiBuildState *build_state = build_opaque; 2875 build_state->patched = 0; 2876 } 2877 2878 static const VMStateDescription vmstate_acpi_build = { 2879 .name = "acpi_build", 2880 .version_id = 1, 2881 .minimum_version_id = 1, 2882 .fields = (VMStateField[]) { 2883 VMSTATE_UINT8(patched, AcpiBuildState), 2884 VMSTATE_END_OF_LIST() 2885 }, 2886 }; 2887 2888 void acpi_setup(void) 2889 { 2890 PCMachineState *pcms = PC_MACHINE(qdev_get_machine()); 2891 PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); 2892 X86MachineState *x86ms = X86_MACHINE(pcms); 2893 AcpiBuildTables tables; 2894 AcpiBuildState *build_state; 2895 Object *vmgenid_dev; 2896 TPMIf *tpm; 2897 static FwCfgTPMConfig tpm_config; 2898 2899 if (!x86ms->fw_cfg) { 2900 ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n"); 2901 return; 2902 } 2903 2904 if (!pcms->acpi_build_enabled) { 2905 ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n"); 2906 return; 2907 } 2908 2909 if (!acpi_enabled) { 2910 ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n"); 2911 return; 2912 } 2913 2914 build_state = g_malloc0(sizeof *build_state); 2915 2916 acpi_build_tables_init(&tables); 2917 acpi_build(&tables, MACHINE(pcms)); 2918 2919 /* Now expose it all to Guest */ 2920 build_state->table_mr = acpi_add_rom_blob(acpi_build_update, 2921 build_state, tables.table_data, 2922 ACPI_BUILD_TABLE_FILE, 2923 ACPI_BUILD_TABLE_MAX_SIZE); 2924 assert(build_state->table_mr != NULL); 2925 2926 build_state->linker_mr = 2927 acpi_add_rom_blob(acpi_build_update, build_state, 2928 tables.linker->cmd_blob, "etc/table-loader", 0); 2929 2930 fw_cfg_add_file(x86ms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, 2931 tables.tcpalog->data, acpi_data_len(tables.tcpalog)); 2932 2933 tpm = tpm_find(); 2934 if (tpm && object_property_get_bool(OBJECT(tpm), "ppi", &error_abort)) { 2935 tpm_config = (FwCfgTPMConfig) { 2936 .tpmppi_address = cpu_to_le32(TPM_PPI_ADDR_BASE), 2937 .tpm_version = tpm_get_version(tpm), 2938 .tpmppi_version = TPM_PPI_VERSION_1_30 2939 }; 2940 fw_cfg_add_file(x86ms->fw_cfg, "etc/tpm/config", 2941 &tpm_config, sizeof tpm_config); 2942 } 2943 2944 vmgenid_dev = find_vmgenid_dev(); 2945 if (vmgenid_dev) { 2946 vmgenid_add_fw_cfg(VMGENID(vmgenid_dev), x86ms->fw_cfg, 2947 tables.vmgenid); 2948 } 2949 2950 if (!pcmc->rsdp_in_ram) { 2951 /* 2952 * Keep for compatibility with old machine types. 2953 * Though RSDP is small, its contents isn't immutable, so 2954 * we'll update it along with the rest of tables on guest access. 2955 */ 2956 uint32_t rsdp_size = acpi_data_len(tables.rsdp); 2957 2958 build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size); 2959 fw_cfg_add_file_callback(x86ms->fw_cfg, ACPI_BUILD_RSDP_FILE, 2960 acpi_build_update, NULL, build_state, 2961 build_state->rsdp, rsdp_size, true); 2962 build_state->rsdp_mr = NULL; 2963 } else { 2964 build_state->rsdp = NULL; 2965 build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update, 2966 build_state, tables.rsdp, 2967 ACPI_BUILD_RSDP_FILE, 0); 2968 } 2969 2970 qemu_register_reset(acpi_build_reset, build_state); 2971 acpi_build_reset(build_state); 2972 vmstate_register(NULL, 0, &vmstate_acpi_build, build_state); 2973 2974 /* Cleanup tables but don't free the memory: we track it 2975 * in build_state. 2976 */ 2977 acpi_build_tables_cleanup(&tables, false); 2978 } 2979