/* Support for generating ACPI tables and passing them to Guests * * Copyright (C) 2008-2010 Kevin O'Connor * Copyright (C) 2006 Fabrice Bellard * Copyright (C) 2013 Red Hat Inc * * Author: Michael S. Tsirkin * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License along * with this program; if not, see . */ #include "qemu/osdep.h" #include "qapi/error.h" #include "qapi/qmp/qnum.h" #include "acpi-build.h" #include "acpi-common.h" #include "qemu/bitmap.h" #include "qemu/error-report.h" #include "hw/pci/pci_bridge.h" #include "hw/cxl/cxl.h" #include "hw/core/cpu.h" #include "target/i386/cpu.h" #include "hw/timer/hpet.h" #include "hw/acpi/acpi-defs.h" #include "hw/acpi/acpi.h" #include "hw/acpi/cpu.h" #include "hw/nvram/fw_cfg.h" #include "hw/acpi/bios-linker-loader.h" #include "hw/acpi/acpi_aml_interface.h" #include "hw/input/i8042.h" #include "hw/acpi/memory_hotplug.h" #include "sysemu/tpm.h" #include "hw/acpi/tpm.h" #include "hw/acpi/vmgenid.h" #include "hw/acpi/erst.h" #include "hw/acpi/piix4.h" #include "sysemu/tpm_backend.h" #include "hw/rtc/mc146818rtc_regs.h" #include "migration/vmstate.h" #include "hw/mem/memory-device.h" #include "hw/mem/nvdimm.h" #include "sysemu/numa.h" #include "sysemu/reset.h" #include "hw/hyperv/vmbus-bridge.h" /* Supported chipsets: */ #include "hw/southbridge/ich9.h" #include "hw/acpi/pcihp.h" #include "hw/i386/fw_cfg.h" #include "hw/i386/pc.h" #include "hw/pci/pci_bus.h" #include "hw/pci-host/i440fx.h" #include "hw/pci-host/q35.h" #include "hw/i386/x86-iommu.h" #include "hw/acpi/aml-build.h" #include "hw/acpi/utils.h" #include "hw/acpi/pci.h" #include "hw/acpi/cxl.h" #include "qom/qom-qobject.h" #include "hw/i386/amd_iommu.h" #include "hw/i386/intel_iommu.h" #include "hw/virtio/virtio-iommu.h" #include "hw/acpi/hmat.h" #include "hw/acpi/viot.h" #include CONFIG_DEVICES /* These are used to size the ACPI tables for -M pc-i440fx-1.7 and * -M pc-i440fx-2.0. Even if the actual amount of AML generated grows * a little bit, there should be plenty of free space since the DSDT * shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1. */ #define ACPI_BUILD_ALIGN_SIZE 0x1000 #define ACPI_BUILD_TABLE_SIZE 0x20000 /* #define DEBUG_ACPI_BUILD */ #ifdef DEBUG_ACPI_BUILD #define ACPI_BUILD_DPRINTF(fmt, ...) \ do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0) #else #define ACPI_BUILD_DPRINTF(fmt, ...) #endif typedef struct AcpiPmInfo { bool s3_disabled; bool s4_disabled; bool pcihp_bridge_en; bool smi_on_cpuhp; bool smi_on_cpu_unplug; bool pcihp_root_en; uint8_t s4_val; AcpiFadtData fadt; uint16_t cpu_hp_io_base; uint16_t pcihp_io_base; uint16_t pcihp_io_len; } AcpiPmInfo; typedef struct AcpiMiscInfo { bool has_hpet; #ifdef CONFIG_TPM TPMVersion tpm_version; #endif } AcpiMiscInfo; typedef struct FwCfgTPMConfig { uint32_t tpmppi_address; uint8_t tpm_version; uint8_t tpmppi_version; } QEMU_PACKED FwCfgTPMConfig; static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg); const struct AcpiGenericAddress x86_nvdimm_acpi_dsmio = { .space_id = AML_AS_SYSTEM_IO, .address = NVDIMM_ACPI_IO_BASE, .bit_width = NVDIMM_ACPI_IO_LEN << 3 }; static void init_common_fadt_data(MachineState *ms, Object *o, AcpiFadtData *data) { X86MachineState *x86ms = X86_MACHINE(ms); /* * "ICH9-LPC" or "PIIX4_PM" has "smm-compat" property to keep the old * behavior for compatibility irrelevant to smm_enabled, which doesn't * comforms to ACPI spec. */ bool smm_enabled = object_property_get_bool(o, "smm-compat", NULL) ? true : x86_machine_is_smm_enabled(x86ms); uint32_t io = object_property_get_uint(o, ACPI_PM_PROP_PM_IO_BASE, NULL); AmlAddressSpace as = AML_AS_SYSTEM_IO; AcpiFadtData fadt = { .rev = 3, .flags = (1 << ACPI_FADT_F_WBINVD) | (1 << ACPI_FADT_F_PROC_C1) | (1 << ACPI_FADT_F_SLP_BUTTON) | (1 << ACPI_FADT_F_RTC_S4) | (1 << ACPI_FADT_F_USE_PLATFORM_CLOCK) | /* APIC destination mode ("Flat Logical") has an upper limit of 8 * CPUs for more than 8 CPUs, "Clustered Logical" mode has to be * used */ ((ms->smp.max_cpus > 8) ? (1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL) : 0), .int_model = 1 /* Multiple APIC */, .rtc_century = RTC_CENTURY, .plvl2_lat = 0xfff /* C2 state not supported */, .plvl3_lat = 0xfff /* C3 state not supported */, .smi_cmd = smm_enabled ? ACPI_PORT_SMI_CMD : 0, .sci_int = object_property_get_uint(o, ACPI_PM_PROP_SCI_INT, NULL), .acpi_enable_cmd = smm_enabled ? object_property_get_uint(o, ACPI_PM_PROP_ACPI_ENABLE_CMD, NULL) : 0, .acpi_disable_cmd = smm_enabled ? object_property_get_uint(o, ACPI_PM_PROP_ACPI_DISABLE_CMD, NULL) : 0, .pm1a_evt = { .space_id = as, .bit_width = 4 * 8, .address = io }, .pm1a_cnt = { .space_id = as, .bit_width = 2 * 8, .address = io + 0x04 }, .pm_tmr = { .space_id = as, .bit_width = 4 * 8, .address = io + 0x08 }, .gpe0_blk = { .space_id = as, .bit_width = object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK_LEN, NULL) * 8, .address = object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK, NULL) }, }; /* * ACPI v2, Table 5-10 - Fixed ACPI Description Table Boot Architecture * Flags, bit offset 1 - 8042. */ fadt.iapc_boot_arch = iapc_boot_arch_8042(); *data = fadt; } static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm) { Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM, NULL); Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE, NULL); Object *obj = piix ? piix : lpc; QObject *o; pm->cpu_hp_io_base = 0; pm->pcihp_io_base = 0; pm->pcihp_io_len = 0; pm->smi_on_cpuhp = false; pm->smi_on_cpu_unplug = false; assert(obj); init_common_fadt_data(machine, obj, &pm->fadt); if (piix) { /* w2k requires FADT(rev1) or it won't boot, keep PC compatible */ pm->fadt.rev = 1; pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE; } if (lpc) { uint64_t smi_features = object_property_get_uint(lpc, ICH9_LPC_SMI_NEGOTIATED_FEAT_PROP, NULL); struct AcpiGenericAddress r = { .space_id = AML_AS_SYSTEM_IO, .bit_width = 8, .address = ICH9_RST_CNT_IOPORT }; pm->fadt.reset_reg = r; pm->fadt.reset_val = 0xf; pm->fadt.flags |= 1 << ACPI_FADT_F_RESET_REG_SUP; pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE; pm->smi_on_cpuhp = !!(smi_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT)); pm->smi_on_cpu_unplug = !!(smi_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT)); } pm->pcihp_io_base = object_property_get_uint(obj, ACPI_PCIHP_IO_BASE_PROP, NULL); pm->pcihp_io_len = object_property_get_uint(obj, ACPI_PCIHP_IO_LEN_PROP, NULL); /* Fill in optional s3/s4 related properties */ o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL); if (o) { pm->s3_disabled = qnum_get_uint(qobject_to(QNum, o)); } else { pm->s3_disabled = false; } qobject_unref(o); o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL); if (o) { pm->s4_disabled = qnum_get_uint(qobject_to(QNum, o)); } else { pm->s4_disabled = false; } qobject_unref(o); o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL); if (o) { pm->s4_val = qnum_get_uint(qobject_to(QNum, o)); } else { pm->s4_val = false; } qobject_unref(o); pm->pcihp_bridge_en = object_property_get_bool(obj, ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, NULL); pm->pcihp_root_en = object_property_get_bool(obj, ACPI_PM_PROP_ACPI_PCI_ROOTHP, NULL); } static void acpi_get_misc_info(AcpiMiscInfo *info) { info->has_hpet = hpet_find(); #ifdef CONFIG_TPM info->tpm_version = tpm_get_version(tpm_find()); #endif } /* * Because of the PXB hosts we cannot simply query TYPE_PCI_HOST_BRIDGE. * On i386 arch we only have two pci hosts, so we can look only for them. */ Object *acpi_get_i386_pci_host(void) { PCIHostState *host; host = PCI_HOST_BRIDGE(object_resolve_path("/machine/i440fx", NULL)); if (!host) { host = PCI_HOST_BRIDGE(object_resolve_path("/machine/q35", NULL)); } return OBJECT(host); } static void acpi_get_pci_holes(Range *hole, Range *hole64) { Object *pci_host; pci_host = acpi_get_i386_pci_host(); if (!pci_host) { return; } range_set_bounds1(hole, object_property_get_uint(pci_host, PCI_HOST_PROP_PCI_HOLE_START, NULL), object_property_get_uint(pci_host, PCI_HOST_PROP_PCI_HOLE_END, NULL)); range_set_bounds1(hole64, object_property_get_uint(pci_host, PCI_HOST_PROP_PCI_HOLE64_START, NULL), object_property_get_uint(pci_host, PCI_HOST_PROP_PCI_HOLE64_END, NULL)); } static void acpi_align_size(GArray *blob, unsigned align) { /* Align size to multiple of given size. This reduces the chance * we need to change size in the future (breaking cross version migration). */ g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align)); } /* * ACPI spec 1.0b, * 5.2.6 Firmware ACPI Control Structure */ static void build_facs(GArray *table_data) { const char *sig = "FACS"; const uint8_t reserved[40] = {}; g_array_append_vals(table_data, sig, 4); /* Signature */ build_append_int_noprefix(table_data, 64, 4); /* Length */ build_append_int_noprefix(table_data, 0, 4); /* Hardware Signature */ build_append_int_noprefix(table_data, 0, 4); /* Firmware Waking Vector */ build_append_int_noprefix(table_data, 0, 4); /* Global Lock */ build_append_int_noprefix(table_data, 0, 4); /* Flags */ g_array_append_vals(table_data, reserved, 40); /* Reserved */ } Aml *aml_pci_device_dsm(void) { Aml *method; method = aml_method("_DSM", 4, AML_SERIALIZED); { Aml *params = aml_local(0); Aml *pkg = aml_package(2); aml_append(pkg, aml_int(0)); aml_append(pkg, aml_int(0)); aml_append(method, aml_store(pkg, params)); aml_append(method, aml_store(aml_name("BSEL"), aml_index(params, aml_int(0)))); aml_append(method, aml_store(aml_name("ASUN"), aml_index(params, aml_int(1)))); aml_append(method, aml_return(aml_call5("PDSM", aml_arg(0), aml_arg(1), aml_arg(2), aml_arg(3), params)) ); } return method; } static void build_append_pci_dsm_func0_common(Aml *ctx, Aml *retvar) { Aml *UUID, *ifctx1; uint8_t byte_list[1] = { 0 }; /* nothing supported yet */ aml_append(ctx, aml_store(aml_buffer(1, byte_list), retvar)); /* * PCI Firmware Specification 3.1 * 4.6. _DSM Definitions for PCI */ UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D"); ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(0), UUID))); { /* call is for unsupported UUID, bail out */ aml_append(ifctx1, aml_return(retvar)); } aml_append(ctx, ifctx1); ifctx1 = aml_if(aml_lless(aml_arg(1), aml_int(2))); { /* call is for unsupported REV, bail out */ aml_append(ifctx1, aml_return(retvar)); } aml_append(ctx, ifctx1); } static Aml *aml_pci_edsm(void) { Aml *method, *ifctx; Aml *zero = aml_int(0); Aml *func = aml_arg(2); Aml *ret = aml_local(0); Aml *aidx = aml_local(1); Aml *params = aml_arg(4); method = aml_method("EDSM", 5, AML_SERIALIZED); /* get supported functions */ ifctx = aml_if(aml_equal(func, zero)); { /* 1: have supported functions */ /* 7: support for function 7 */ const uint8_t caps = 1 | BIT(7); build_append_pci_dsm_func0_common(ifctx, ret); aml_append(ifctx, aml_store(aml_int(caps), aml_index(ret, zero))); aml_append(ifctx, aml_return(ret)); } aml_append(method, ifctx); /* handle specific functions requests */ /* * PCI Firmware Specification 3.1 * 4.6.7. _DSM for Naming a PCI or PCI Express Device Under * Operating Systems */ ifctx = aml_if(aml_equal(func, aml_int(7))); { Aml *pkg = aml_package(2); aml_append(pkg, zero); /* optional, if not impl. should return null string */ aml_append(pkg, aml_string("%s", "")); aml_append(ifctx, aml_store(pkg, ret)); /* * IASL is fine when initializing Package with computational data, * however it makes guest unhappy /it fails to process such AML/. * So use runtime assignment to set acpi-index after initializer * to make OSPM happy. */ aml_append(ifctx, aml_store(aml_derefof(aml_index(params, aml_int(0))), aidx)); aml_append(ifctx, aml_store(aidx, aml_index(ret, zero))); aml_append(ifctx, aml_return(ret)); } aml_append(method, ifctx); return method; } static Aml *aml_pci_static_endpoint_dsm(PCIDevice *pdev) { Aml *method; g_assert(pdev->acpi_index != 0); method = aml_method("_DSM", 4, AML_SERIALIZED); { Aml *params = aml_local(0); Aml *pkg = aml_package(1); aml_append(pkg, aml_int(pdev->acpi_index)); aml_append(method, aml_store(pkg, params)); aml_append(method, aml_return(aml_call5("EDSM", aml_arg(0), aml_arg(1), aml_arg(2), aml_arg(3), params)) ); } return method; } static void build_append_pcihp_notify_entry(Aml *method, int slot) { Aml *if_ctx; int32_t devfn = PCI_DEVFN(slot, 0); if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot), NULL)); aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1))); aml_append(method, if_ctx); } static bool is_devfn_ignored_generic(const int devfn, const PCIBus *bus) { const PCIDevice *pdev = bus->devices[devfn]; if (PCI_FUNC(devfn)) { if (IS_PCI_BRIDGE(pdev)) { /* * Ignore only hotplugged PCI bridges on !0 functions, but * allow describing cold plugged bridges on all functions */ if (DEVICE(pdev)->hotplugged) { return true; } } } return false; } static bool is_devfn_ignored_hotplug(const int devfn, const PCIBus *bus) { PCIDevice *pdev = bus->devices[devfn]; if (pdev) { return is_devfn_ignored_generic(devfn, bus) || !DEVICE_GET_CLASS(pdev)->hotpluggable || /* Cold plugged bridges aren't themselves hot-pluggable */ (IS_PCI_BRIDGE(pdev) && !DEVICE(pdev)->hotplugged); } else { /* non populated slots */ /* * hotplug is supported only for non-multifunction device * so generate device description only for function 0 */ if (PCI_FUNC(devfn) || (pci_bus_is_express(bus) && PCI_SLOT(devfn) > 0)) { return true; } } return false; } void build_append_pcihp_slots(Aml *parent_scope, PCIBus *bus) { int devfn; Aml *dev, *notify_method = NULL, *method; QObject *bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL); uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); qobject_unref(bsel); aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val))); notify_method = aml_method("DVNT", 2, AML_NOTSERIALIZED); for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { int slot = PCI_SLOT(devfn); int adr = slot << 16 | PCI_FUNC(devfn); if (is_devfn_ignored_hotplug(devfn, bus)) { continue; } if (bus->devices[devfn]) { dev = aml_scope("S%.02X", devfn); } else { dev = aml_device("S%.02X", devfn); aml_append(dev, aml_name_decl("_ADR", aml_int(adr))); } /* * Can't declare _SUN here for every device as it changes 'slot' * enumeration order in linux kernel, so use another variable for it */ aml_append(dev, aml_name_decl("ASUN", aml_int(slot))); aml_append(dev, aml_pci_device_dsm()); aml_append(dev, aml_name_decl("_SUN", aml_int(slot))); /* add _EJ0 to make slot hotpluggable */ method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); aml_append(method, aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN")) ); aml_append(dev, method); build_append_pcihp_notify_entry(notify_method, slot); /* device descriptor has been composed, add it into parent context */ aml_append(parent_scope, dev); } aml_append(parent_scope, notify_method); } void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus) { int devfn; Aml *dev; for (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) { /* ACPI spec: 1.0b: Table 6-2 _ADR Object Bus Types, PCI type */ int adr = PCI_SLOT(devfn) << 16 | PCI_FUNC(devfn); PCIDevice *pdev = bus->devices[devfn]; if (!pdev || is_devfn_ignored_generic(devfn, bus)) { continue; } /* start to compose PCI device descriptor */ dev = aml_device("S%.02X", devfn); aml_append(dev, aml_name_decl("_ADR", aml_int(adr))); call_dev_aml_func(DEVICE(bus->devices[devfn]), dev); /* add _DSM if device has acpi-index set */ if (pdev->acpi_index && !object_property_get_bool(OBJECT(pdev), "hotpluggable", &error_abort)) { aml_append(dev, aml_pci_static_endpoint_dsm(pdev)); } /* device descriptor has been composed, add it into parent context */ aml_append(parent_scope, dev); } } static bool build_append_notfication_callback(Aml *parent_scope, const PCIBus *bus) { Aml *method; PCIBus *sec; QObject *bsel; int nr_notifiers = 0; GQueue *pcnt_bus_list = g_queue_new(); QLIST_FOREACH(sec, &bus->child, sibling) { Aml *br_scope = aml_scope("S%.02X", sec->parent_dev->devfn); if (pci_bus_is_root(sec)) { continue; } nr_notifiers = nr_notifiers + build_append_notfication_callback(br_scope, sec); /* * add new child scope to parent * and keep track of bus that have PCNT, * bus list is used later to call children PCNTs from this level PCNT */ if (nr_notifiers) { g_queue_push_tail(pcnt_bus_list, sec); aml_append(parent_scope, br_scope); } } /* * Append PCNT method to notify about events on local and child buses. * ps: hostbridge might not have hotplug (bsel) enabled but might have * child bridges that do have bsel. */ method = aml_method("PCNT", 0, AML_NOTSERIALIZED); /* If bus supports hotplug select it and notify about local events */ bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL); if (bsel) { uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel)); aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM"))); aml_append(method, aml_call2("DVNT", aml_name("PCIU"), aml_int(1))); /* Device Check */ aml_append(method, aml_call2("DVNT", aml_name("PCID"), aml_int(3))); /* Eject Request */ nr_notifiers++; } /* Notify about child bus events in any case */ while ((sec = g_queue_pop_head(pcnt_bus_list))) { aml_append(method, aml_name("^S%.02X.PCNT", sec->parent_dev->devfn)); } aml_append(parent_scope, method); qobject_unref(bsel); g_queue_free(pcnt_bus_list); return !!nr_notifiers; } static Aml *aml_pci_pdsm(void) { Aml *method, *ifctx, *ifctx1; Aml *ret = aml_local(0); Aml *caps = aml_local(1); Aml *acpi_index = aml_local(2); Aml *zero = aml_int(0); Aml *one = aml_int(1); Aml *func = aml_arg(2); Aml *params = aml_arg(4); Aml *bnum = aml_derefof(aml_index(params, aml_int(0))); Aml *sunum = aml_derefof(aml_index(params, aml_int(1))); method = aml_method("PDSM", 5, AML_SERIALIZED); /* get supported functions */ ifctx = aml_if(aml_equal(func, zero)); { build_append_pci_dsm_func0_common(ifctx, ret); aml_append(ifctx, aml_store(zero, caps)); aml_append(ifctx, aml_store(aml_call2("AIDX", bnum, sunum), acpi_index)); /* * advertise function 7 if device has acpi-index * acpi_index values: * 0: not present (default value) * FFFFFFFF: not supported (old QEMU without PIDX reg) * other: device's acpi-index */ ifctx1 = aml_if(aml_lnot( aml_or(aml_equal(acpi_index, zero), aml_equal(acpi_index, aml_int(0xFFFFFFFF)), NULL) )); { /* have supported functions */ aml_append(ifctx1, aml_or(caps, one, caps)); /* support for function 7 */ aml_append(ifctx1, aml_or(caps, aml_shiftleft(one, aml_int(7)), caps)); } aml_append(ifctx, ifctx1); aml_append(ifctx, aml_store(caps, aml_index(ret, zero))); aml_append(ifctx, aml_return(ret)); } aml_append(method, ifctx); /* handle specific functions requests */ /* * PCI Firmware Specification 3.1 * 4.6.7. _DSM for Naming a PCI or PCI Express Device Under * Operating Systems */ ifctx = aml_if(aml_equal(func, aml_int(7))); { Aml *pkg = aml_package(2); aml_append(pkg, zero); /* * optional, if not impl. should return null string */ aml_append(pkg, aml_string("%s", "")); aml_append(ifctx, aml_store(pkg, ret)); aml_append(ifctx, aml_store(aml_call2("AIDX", bnum, sunum), acpi_index)); /* * update acpi-index to actual value */ aml_append(ifctx, aml_store(acpi_index, aml_index(ret, zero))); aml_append(ifctx, aml_return(ret)); } aml_append(method, ifctx); return method; } /* * build_prt - Define interrupt routing rules * * Returns an array of 128 routes, one for each device, * based on device location. * The main goal is to equally distribute the interrupts * over the 4 existing ACPI links (works only for i440fx). * The hash function is: (slot + pin) & 3 -> "LNK[D|A|B|C]". * */ static Aml *build_prt(bool is_pci0_prt) { const int nroutes = 128; Aml *rt_pkg, *method; int pin; method = aml_method("_PRT", 0, AML_NOTSERIALIZED); assert(nroutes < 256); rt_pkg = aml_package(nroutes); for (pin = 0; pin < nroutes; pin++) { Aml *pkg = aml_package(4); int slot = pin >> 2; aml_append(pkg, aml_int((slot << 16) | 0xFFFF)); aml_append(pkg, aml_int(pin & 3)); /* device 1 is the power-management device, needs SCI */ if (is_pci0_prt && pin == 4) { aml_append(pkg, aml_name("%s", "LNKS")); } else { static const char link_name[][5] = {"LNKD", "LNKA", "LNKB", "LNKC"}; int hash = (slot + pin) & 3; aml_append(pkg, aml_name("%s", link_name[hash])); } aml_append(pkg, aml_int(0)); aml_append(rt_pkg, pkg); } aml_append(method, aml_return(rt_pkg)); return method; } static void build_hpet_aml(Aml *table) { Aml *crs; Aml *field; Aml *method; Aml *if_ctx; Aml *scope = aml_scope("_SB"); Aml *dev = aml_device("HPET"); Aml *zero = aml_int(0); Aml *id = aml_local(0); Aml *period = aml_local(1); aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0103"))); aml_append(dev, aml_name_decl("_UID", zero)); aml_append(dev, aml_operation_region("HPTM", AML_SYSTEM_MEMORY, aml_int(HPET_BASE), HPET_LEN)); field = aml_field("HPTM", AML_DWORD_ACC, AML_LOCK, AML_PRESERVE); aml_append(field, aml_named_field("VEND", 32)); aml_append(field, aml_named_field("PRD", 32)); aml_append(dev, field); method = aml_method("_STA", 0, AML_NOTSERIALIZED); aml_append(method, aml_store(aml_name("VEND"), id)); aml_append(method, aml_store(aml_name("PRD"), period)); aml_append(method, aml_shiftright(id, aml_int(16), id)); if_ctx = aml_if(aml_lor(aml_equal(id, zero), aml_equal(id, aml_int(0xffff)))); { aml_append(if_ctx, aml_return(zero)); } aml_append(method, if_ctx); if_ctx = aml_if(aml_lor(aml_equal(period, zero), aml_lgreater(period, aml_int(100000000)))); { aml_append(if_ctx, aml_return(zero)); } aml_append(method, if_ctx); aml_append(method, aml_return(aml_int(0x0F))); aml_append(dev, method); crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(HPET_BASE, HPET_LEN, AML_READ_ONLY)); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); aml_append(table, scope); } static Aml *build_vmbus_device_aml(VMBusBridge *vmbus_bridge) { Aml *dev; Aml *method; Aml *crs; dev = aml_device("VMBS"); aml_append(dev, aml_name_decl("STA", aml_int(0xF))); aml_append(dev, aml_name_decl("_HID", aml_string("VMBus"))); aml_append(dev, aml_name_decl("_UID", aml_int(0x0))); aml_append(dev, aml_name_decl("_DDN", aml_string("VMBUS"))); method = aml_method("_DIS", 0, AML_NOTSERIALIZED); aml_append(method, aml_store(aml_and(aml_name("STA"), aml_int(0xD), NULL), aml_name("STA"))); aml_append(dev, method); method = aml_method("_PS0", 0, AML_NOTSERIALIZED); aml_append(method, aml_store(aml_or(aml_name("STA"), aml_int(0xF), NULL), aml_name("STA"))); aml_append(dev, method); method = aml_method("_STA", 0, AML_NOTSERIALIZED); aml_append(method, aml_return(aml_name("STA"))); aml_append(dev, method); aml_append(dev, aml_name_decl("_PS3", aml_int(0x0))); crs = aml_resource_template(); aml_append(crs, aml_irq_no_flags(vmbus_bridge->irq)); aml_append(dev, aml_name_decl("_CRS", crs)); return dev; } static void build_dbg_aml(Aml *table) { Aml *field; Aml *method; Aml *while_ctx; Aml *scope = aml_scope("\\"); Aml *buf = aml_local(0); Aml *len = aml_local(1); Aml *idx = aml_local(2); aml_append(scope, aml_operation_region("DBG", AML_SYSTEM_IO, aml_int(0x0402), 0x01)); field = aml_field("DBG", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE); aml_append(field, aml_named_field("DBGB", 8)); aml_append(scope, field); method = aml_method("DBUG", 1, AML_NOTSERIALIZED); aml_append(method, aml_to_hexstring(aml_arg(0), buf)); aml_append(method, aml_to_buffer(buf, buf)); aml_append(method, aml_subtract(aml_sizeof(buf), aml_int(1), len)); aml_append(method, aml_store(aml_int(0), idx)); while_ctx = aml_while(aml_lless(idx, len)); aml_append(while_ctx, aml_store(aml_derefof(aml_index(buf, idx)), aml_name("DBGB"))); aml_append(while_ctx, aml_increment(idx)); aml_append(method, while_ctx); aml_append(method, aml_store(aml_int(0x0A), aml_name("DBGB"))); aml_append(scope, method); aml_append(table, scope); } static Aml *build_link_dev(const char *name, uint8_t uid, Aml *reg) { Aml *dev; Aml *crs; Aml *method; uint32_t irqs[] = {5, 10, 11}; dev = aml_device("%s", name); aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); aml_append(dev, aml_name_decl("_UID", aml_int(uid))); crs = aml_resource_template(); aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_SHARED, irqs, ARRAY_SIZE(irqs))); aml_append(dev, aml_name_decl("_PRS", crs)); method = aml_method("_STA", 0, AML_NOTSERIALIZED); aml_append(method, aml_return(aml_call1("IQST", reg))); aml_append(dev, method); method = aml_method("_DIS", 0, AML_NOTSERIALIZED); aml_append(method, aml_or(reg, aml_int(0x80), reg)); aml_append(dev, method); method = aml_method("_CRS", 0, AML_NOTSERIALIZED); aml_append(method, aml_return(aml_call1("IQCR", reg))); aml_append(dev, method); method = aml_method("_SRS", 1, AML_NOTSERIALIZED); aml_append(method, aml_create_dword_field(aml_arg(0), aml_int(5), "PRRI")); aml_append(method, aml_store(aml_name("PRRI"), reg)); aml_append(dev, method); return dev; } static Aml *build_gsi_link_dev(const char *name, uint8_t uid, uint8_t gsi) { Aml *dev; Aml *crs; Aml *method; uint32_t irqs; dev = aml_device("%s", name); aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); aml_append(dev, aml_name_decl("_UID", aml_int(uid))); crs = aml_resource_template(); irqs = gsi; aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1)); aml_append(dev, aml_name_decl("_PRS", crs)); aml_append(dev, aml_name_decl("_CRS", crs)); /* * _DIS can be no-op because the interrupt cannot be disabled. */ method = aml_method("_DIS", 0, AML_NOTSERIALIZED); aml_append(dev, method); method = aml_method("_SRS", 1, AML_NOTSERIALIZED); aml_append(dev, method); return dev; } /* _CRS method - get current settings */ static Aml *build_iqcr_method(bool is_piix4) { Aml *if_ctx; uint32_t irqs; Aml *method = aml_method("IQCR", 1, AML_SERIALIZED); Aml *crs = aml_resource_template(); irqs = 0; aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1)); aml_append(method, aml_name_decl("PRR0", crs)); aml_append(method, aml_create_dword_field(aml_name("PRR0"), aml_int(5), "PRRI")); if (is_piix4) { if_ctx = aml_if(aml_lless(aml_arg(0), aml_int(0x80))); aml_append(if_ctx, aml_store(aml_arg(0), aml_name("PRRI"))); aml_append(method, if_ctx); } else { aml_append(method, aml_store(aml_and(aml_arg(0), aml_int(0xF), NULL), aml_name("PRRI"))); } aml_append(method, aml_return(aml_name("PRR0"))); return method; } /* _STA method - get status */ static Aml *build_irq_status_method(void) { Aml *if_ctx; Aml *method = aml_method("IQST", 1, AML_NOTSERIALIZED); if_ctx = aml_if(aml_and(aml_int(0x80), aml_arg(0), NULL)); aml_append(if_ctx, aml_return(aml_int(0x09))); aml_append(method, if_ctx); aml_append(method, aml_return(aml_int(0x0B))); return method; } static void build_piix4_pci0_int(Aml *table) { Aml *dev; Aml *crs; Aml *method; uint32_t irqs; Aml *sb_scope = aml_scope("_SB"); Aml *pci0_scope = aml_scope("PCI0"); aml_append(pci0_scope, build_prt(true)); aml_append(sb_scope, pci0_scope); aml_append(sb_scope, build_irq_status_method()); aml_append(sb_scope, build_iqcr_method(true)); aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQ0"))); aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQ1"))); aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQ2"))); aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQ3"))); dev = aml_device("LNKS"); { aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F"))); aml_append(dev, aml_name_decl("_UID", aml_int(4))); crs = aml_resource_template(); irqs = 9; aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1)); aml_append(dev, aml_name_decl("_PRS", crs)); /* The SCI cannot be disabled and is always attached to GSI 9, * so these are no-ops. We only need this link to override the * polarity to active high and match the content of the MADT. */ method = aml_method("_STA", 0, AML_NOTSERIALIZED); aml_append(method, aml_return(aml_int(0x0b))); aml_append(dev, method); method = aml_method("_DIS", 0, AML_NOTSERIALIZED); aml_append(dev, method); method = aml_method("_CRS", 0, AML_NOTSERIALIZED); aml_append(method, aml_return(aml_name("_PRS"))); aml_append(dev, method); method = aml_method("_SRS", 1, AML_NOTSERIALIZED); aml_append(dev, method); } aml_append(sb_scope, dev); aml_append(table, sb_scope); } static void append_q35_prt_entry(Aml *ctx, uint32_t nr, const char *name) { int i; int head; Aml *pkg; char base = name[3] < 'E' ? 'A' : 'E'; char *s = g_strdup(name); Aml *a_nr = aml_int((nr << 16) | 0xffff); assert(strlen(s) == 4); head = name[3] - base; for (i = 0; i < 4; i++) { if (head + i > 3) { head = i * -1; } s[3] = base + head + i; pkg = aml_package(4); aml_append(pkg, a_nr); aml_append(pkg, aml_int(i)); aml_append(pkg, aml_name("%s", s)); aml_append(pkg, aml_int(0)); aml_append(ctx, pkg); } g_free(s); } static Aml *build_q35_routing_table(const char *str) { int i; Aml *pkg; char *name = g_strdup_printf("%s ", str); pkg = aml_package(128); for (i = 0; i < 0x18; i++) { name[3] = 'E' + (i & 0x3); append_q35_prt_entry(pkg, i, name); } name[3] = 'E'; append_q35_prt_entry(pkg, 0x18, name); /* INTA -> PIRQA for slot 25 - 31, see the default value of DIR */ for (i = 0x0019; i < 0x1e; i++) { name[3] = 'A'; append_q35_prt_entry(pkg, i, name); } /* PCIe->PCI bridge. use PIRQ[E-H] */ name[3] = 'E'; append_q35_prt_entry(pkg, 0x1e, name); name[3] = 'A'; append_q35_prt_entry(pkg, 0x1f, name); g_free(name); return pkg; } static void build_q35_pci0_int(Aml *table) { Aml *method; Aml *sb_scope = aml_scope("_SB"); Aml *pci0_scope = aml_scope("PCI0"); /* Zero => PIC mode, One => APIC Mode */ aml_append(table, aml_name_decl("PICF", aml_int(0))); method = aml_method("_PIC", 1, AML_NOTSERIALIZED); { aml_append(method, aml_store(aml_arg(0), aml_name("PICF"))); } aml_append(table, method); aml_append(pci0_scope, aml_name_decl("PRTP", build_q35_routing_table("LNK"))); aml_append(pci0_scope, aml_name_decl("PRTA", build_q35_routing_table("GSI"))); method = aml_method("_PRT", 0, AML_NOTSERIALIZED); { Aml *if_ctx; Aml *else_ctx; /* PCI IRQ routing table, example from ACPI 2.0a specification, section 6.2.8.1 */ /* Note: we provide the same info as the PCI routing table of the Bochs BIOS */ if_ctx = aml_if(aml_equal(aml_name("PICF"), aml_int(0))); aml_append(if_ctx, aml_return(aml_name("PRTP"))); aml_append(method, if_ctx); else_ctx = aml_else(); aml_append(else_ctx, aml_return(aml_name("PRTA"))); aml_append(method, else_ctx); } aml_append(pci0_scope, method); aml_append(sb_scope, pci0_scope); aml_append(sb_scope, build_irq_status_method()); aml_append(sb_scope, build_iqcr_method(false)); aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQA"))); aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQB"))); aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQC"))); aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQD"))); aml_append(sb_scope, build_link_dev("LNKE", 4, aml_name("PRQE"))); aml_append(sb_scope, build_link_dev("LNKF", 5, aml_name("PRQF"))); aml_append(sb_scope, build_link_dev("LNKG", 6, aml_name("PRQG"))); aml_append(sb_scope, build_link_dev("LNKH", 7, aml_name("PRQH"))); aml_append(sb_scope, build_gsi_link_dev("GSIA", 0x10, 0x10)); aml_append(sb_scope, build_gsi_link_dev("GSIB", 0x11, 0x11)); aml_append(sb_scope, build_gsi_link_dev("GSIC", 0x12, 0x12)); aml_append(sb_scope, build_gsi_link_dev("GSID", 0x13, 0x13)); aml_append(sb_scope, build_gsi_link_dev("GSIE", 0x14, 0x14)); aml_append(sb_scope, build_gsi_link_dev("GSIF", 0x15, 0x15)); aml_append(sb_scope, build_gsi_link_dev("GSIG", 0x16, 0x16)); aml_append(sb_scope, build_gsi_link_dev("GSIH", 0x17, 0x17)); aml_append(table, sb_scope); } static Aml *build_q35_dram_controller(const AcpiMcfgInfo *mcfg) { Aml *dev; Aml *resource_template; /* DRAM controller */ dev = aml_device("DRAC"); aml_append(dev, aml_name_decl("_HID", aml_string("PNP0C01"))); resource_template = aml_resource_template(); if (mcfg->base + mcfg->size - 1 >= (1ULL << 32)) { aml_append(resource_template, aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000000000000000, mcfg->base, mcfg->base + mcfg->size - 1, 0x0000000000000000, mcfg->size)); } else { aml_append(resource_template, aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000000000000000, mcfg->base, mcfg->base + mcfg->size - 1, 0x0000000000000000, mcfg->size)); } aml_append(dev, aml_name_decl("_CRS", resource_template)); return dev; } static void build_x86_acpi_pci_hotplug(Aml *table, uint64_t pcihp_addr) { Aml *scope; Aml *field; Aml *method; scope = aml_scope("_SB.PCI0"); aml_append(scope, aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(pcihp_addr), 0x08)); field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); aml_append(field, aml_named_field("PCIU", 32)); aml_append(field, aml_named_field("PCID", 32)); aml_append(scope, field); aml_append(scope, aml_operation_region("SEJ", AML_SYSTEM_IO, aml_int(pcihp_addr + ACPI_PCIHP_SEJ_BASE), 0x04)); field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); aml_append(field, aml_named_field("B0EJ", 32)); aml_append(scope, field); aml_append(scope, aml_operation_region("BNMR", AML_SYSTEM_IO, aml_int(pcihp_addr + ACPI_PCIHP_BNMR_BASE), 0x08)); field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); aml_append(field, aml_named_field("BNUM", 32)); aml_append(field, aml_named_field("PIDX", 32)); aml_append(scope, field); aml_append(scope, aml_mutex("BLCK", 0)); method = aml_method("PCEJ", 2, AML_NOTSERIALIZED); aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF)); aml_append(method, aml_store(aml_arg(0), aml_name("BNUM"))); aml_append(method, aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ"))); aml_append(method, aml_release(aml_name("BLCK"))); aml_append(method, aml_return(aml_int(0))); aml_append(scope, method); method = aml_method("AIDX", 2, AML_NOTSERIALIZED); aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF)); aml_append(method, aml_store(aml_arg(0), aml_name("BNUM"))); aml_append(method, aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("PIDX"))); aml_append(method, aml_store(aml_name("PIDX"), aml_local(0))); aml_append(method, aml_release(aml_name("BLCK"))); aml_append(method, aml_return(aml_local(0))); aml_append(scope, method); aml_append(scope, aml_pci_pdsm()); aml_append(table, scope); } static Aml *build_q35_osc_method(bool enable_native_pcie_hotplug) { Aml *if_ctx; Aml *if_ctx2; Aml *else_ctx; Aml *method; Aml *a_cwd1 = aml_name("CDW1"); Aml *a_ctrl = aml_local(0); method = aml_method("_OSC", 4, AML_NOTSERIALIZED); aml_append(method, aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1")); if_ctx = aml_if(aml_equal( aml_arg(0), aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766"))); aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2")); aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3")); aml_append(if_ctx, aml_store(aml_name("CDW3"), a_ctrl)); /* * Always allow native PME, AER (no dependencies) * Allow SHPC (PCI bridges can have SHPC controller) * Disable PCIe Native Hot-plug if ACPI PCI Hot-plug is enabled. */ aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1E | (enable_native_pcie_hotplug ? 0x1 : 0x0)), a_ctrl)); if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1)))); /* Unknown revision */ aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x08), a_cwd1)); aml_append(if_ctx, if_ctx2); if_ctx2 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), a_ctrl))); /* Capabilities bits were masked */ aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x10), a_cwd1)); aml_append(if_ctx, if_ctx2); /* Update DWORD3 in the buffer */ aml_append(if_ctx, aml_store(a_ctrl, aml_name("CDW3"))); aml_append(method, if_ctx); else_ctx = aml_else(); /* Unrecognized UUID */ aml_append(else_ctx, aml_or(a_cwd1, aml_int(4), a_cwd1)); aml_append(method, else_ctx); aml_append(method, aml_return(aml_arg(3))); return method; } static void build_acpi0017(Aml *table) { Aml *dev, *scope, *method; scope = aml_scope("_SB"); dev = aml_device("CXLM"); aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0017"))); method = aml_method("_STA", 0, AML_NOTSERIALIZED); aml_append(method, aml_return(aml_int(0x0B))); aml_append(dev, method); build_cxl_dsm_method(dev); aml_append(scope, dev); aml_append(table, scope); } static void build_dsdt(GArray *table_data, BIOSLinker *linker, AcpiPmInfo *pm, AcpiMiscInfo *misc, Range *pci_hole, Range *pci_hole64, MachineState *machine) { Object *i440fx = object_resolve_type_unambiguous(TYPE_I440FX_PCI_HOST_BRIDGE, NULL); Object *q35 = object_resolve_type_unambiguous(TYPE_Q35_HOST_DEVICE, NULL); CrsRangeEntry *entry; Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs; CrsRangeSet crs_range_set; PCMachineState *pcms = PC_MACHINE(machine); PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine); X86MachineState *x86ms = X86_MACHINE(machine); AcpiMcfgInfo mcfg; bool mcfg_valid = !!acpi_get_mcfg(&mcfg); uint32_t nr_mem = machine->ram_slots; int root_bus_limit = 0xFF; PCIBus *bus = NULL; #ifdef CONFIG_TPM TPMIf *tpm = tpm_find(); #endif bool cxl_present = false; int i; VMBusBridge *vmbus_bridge = vmbus_bridge_find(); AcpiTable table = { .sig = "DSDT", .rev = 1, .oem_id = x86ms->oem_id, .oem_table_id = x86ms->oem_table_id }; assert(!!i440fx != !!q35); acpi_table_begin(&table, table_data); dsdt = init_aml_allocator(); build_dbg_aml(dsdt); if (i440fx) { sb_scope = aml_scope("_SB"); dev = aml_device("PCI0"); aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); aml_append(dev, aml_name_decl("_UID", aml_int(pcmc->pci_root_uid))); aml_append(dev, aml_pci_edsm()); aml_append(sb_scope, dev); aml_append(dsdt, sb_scope); if (pm->pcihp_bridge_en || pm->pcihp_root_en) { build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base); } build_piix4_pci0_int(dsdt); } else if (q35) { sb_scope = aml_scope("_SB"); dev = aml_device("PCI0"); aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); aml_append(dev, aml_name_decl("_UID", aml_int(pcmc->pci_root_uid))); aml_append(dev, build_q35_osc_method(!pm->pcihp_bridge_en)); aml_append(dev, aml_pci_edsm()); aml_append(sb_scope, dev); if (mcfg_valid) { aml_append(sb_scope, build_q35_dram_controller(&mcfg)); } if (pm->smi_on_cpuhp) { /* reserve SMI block resources, IO ports 0xB2, 0xB3 */ dev = aml_device("PCI0.SMI0"); aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06"))); aml_append(dev, aml_name_decl("_UID", aml_string("SMI resources"))); crs = aml_resource_template(); aml_append(crs, aml_io( AML_DECODE16, pm->fadt.smi_cmd, pm->fadt.smi_cmd, 1, 2) ); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(dev, aml_operation_region("SMIR", AML_SYSTEM_IO, aml_int(pm->fadt.smi_cmd), 2)); field = aml_field("SMIR", AML_BYTE_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS); aml_append(field, aml_named_field("SMIC", 8)); aml_append(field, aml_reserved_field(8)); aml_append(dev, field); aml_append(sb_scope, dev); } aml_append(dsdt, sb_scope); if (pm->pcihp_bridge_en) { build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base); } build_q35_pci0_int(dsdt); } if (misc->has_hpet) { build_hpet_aml(dsdt); } if (vmbus_bridge) { sb_scope = aml_scope("_SB"); aml_append(sb_scope, build_vmbus_device_aml(vmbus_bridge)); aml_append(dsdt, sb_scope); } scope = aml_scope("_GPE"); { aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006"))); if (machine->nvdimms_state->is_enabled) { method = aml_method("_E04", 0, AML_NOTSERIALIZED); aml_append(method, aml_notify(aml_name("\\_SB.NVDR"), aml_int(0x80))); aml_append(scope, method); } } aml_append(dsdt, scope); if (pcmc->legacy_cpu_hotplug) { build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base); } else { CPUHotplugFeatures opts = { .acpi_1_compatible = true, .has_legacy_cphp = true, .smi_path = pm->smi_on_cpuhp ? "\\_SB.PCI0.SMI0.SMIC" : NULL, .fw_unplugs_cpu = pm->smi_on_cpu_unplug, }; build_cpus_aml(dsdt, machine, opts, pc_madt_cpu_entry, pm->cpu_hp_io_base, "\\_SB.PCI0", "\\_GPE._E02", AML_SYSTEM_IO); } if (pcms->memhp_io_base && nr_mem) { build_memory_hotplug_aml(dsdt, nr_mem, "\\_SB.PCI0", "\\_GPE._E03", AML_SYSTEM_IO, pcms->memhp_io_base); } crs_range_set_init(&crs_range_set); bus = PC_MACHINE(machine)->pcibus; if (bus) { QLIST_FOREACH(bus, &bus->child, sibling) { uint8_t bus_num = pci_bus_num(bus); uint8_t numa_node = pci_bus_numa_node(bus); uint32_t uid; /* look only for expander root buses */ if (!pci_bus_is_root(bus)) { continue; } if (bus_num < root_bus_limit) { root_bus_limit = bus_num - 1; } uid = object_property_get_uint(OBJECT(bus), "acpi_uid", &error_fatal); scope = aml_scope("\\_SB"); if (pci_bus_is_cxl(bus)) { dev = aml_device("CL%.02X", bus_num); } else { dev = aml_device("PC%.02X", bus_num); } aml_append(dev, aml_name_decl("_UID", aml_int(uid))); aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num))); if (pci_bus_is_cxl(bus)) { struct Aml *aml_pkg = aml_package(2); aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0016"))); aml_append(aml_pkg, aml_eisaid("PNP0A08")); aml_append(aml_pkg, aml_eisaid("PNP0A03")); aml_append(dev, aml_name_decl("_CID", aml_pkg)); build_cxl_osc_method(dev); } else if (pci_bus_is_express(bus)) { aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08"))); aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03"))); /* Expander bridges do not have ACPI PCI Hot-plug enabled */ aml_append(dev, build_q35_osc_method(true)); } else { aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03"))); } if (numa_node != NUMA_NODE_UNASSIGNED) { aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node))); } aml_append(dev, build_prt(false)); crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set, 0, 0, 0, 0); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); aml_append(dsdt, scope); /* Handle the ranges for the PXB expanders */ if (pci_bus_is_cxl(bus)) { MemoryRegion *mr = &pcms->cxl_devices_state.host_mr; uint64_t base = mr->addr; cxl_present = true; crs_range_insert(crs_range_set.mem_ranges, base, base + memory_region_size(mr) - 1); } } } if (cxl_present) { build_acpi0017(dsdt); } /* * At this point crs_range_set has all the ranges used by pci * busses *other* than PCI0. These ranges will be excluded from * the PCI0._CRS. Add mmconfig to the set so it will be excluded * too. */ if (mcfg_valid) { crs_range_insert(crs_range_set.mem_ranges, mcfg.base, mcfg.base + mcfg.size - 1); } scope = aml_scope("\\_SB.PCI0"); /* build PCI0._CRS */ crs = aml_resource_template(); aml_append(crs, aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, 0x0000, 0x0, root_bus_limit, 0x0000, root_bus_limit + 1)); aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08)); aml_append(crs, aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, AML_ENTIRE_RANGE, 0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8)); crs_replace_with_free_ranges(crs_range_set.io_ranges, 0x0D00, 0xFFFF); for (i = 0; i < crs_range_set.io_ranges->len; i++) { entry = g_ptr_array_index(crs_range_set.io_ranges, i); aml_append(crs, aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE, AML_ENTIRE_RANGE, 0x0000, entry->base, entry->limit, 0x0000, entry->limit - entry->base + 1)); } aml_append(crs, aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_CACHEABLE, AML_READ_WRITE, 0, 0x000A0000, 0x000BFFFF, 0, 0x00020000)); crs_replace_with_free_ranges(crs_range_set.mem_ranges, range_lob(pci_hole), range_upb(pci_hole)); for (i = 0; i < crs_range_set.mem_ranges->len; i++) { entry = g_ptr_array_index(crs_range_set.mem_ranges, i); aml_append(crs, aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_NON_CACHEABLE, AML_READ_WRITE, 0, entry->base, entry->limit, 0, entry->limit - entry->base + 1)); } if (!range_is_empty(pci_hole64)) { crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges, range_lob(pci_hole64), range_upb(pci_hole64)); for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) { entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i); aml_append(crs, aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_CACHEABLE, AML_READ_WRITE, 0, entry->base, entry->limit, 0, entry->limit - entry->base + 1)); } } #ifdef CONFIG_TPM if (TPM_IS_TIS_ISA(tpm_find())) { aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE, TPM_TIS_ADDR_SIZE, AML_READ_WRITE)); } #endif aml_append(scope, aml_name_decl("_CRS", crs)); /* reserve GPE0 block resources */ dev = aml_device("GPE0"); aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources"))); /* device present, functioning, decoding, not shown in UI */ aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); crs = aml_resource_template(); aml_append(crs, aml_io( AML_DECODE16, pm->fadt.gpe0_blk.address, pm->fadt.gpe0_blk.address, 1, pm->fadt.gpe0_blk.bit_width / 8) ); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); crs_range_set_free(&crs_range_set); /* reserve PCIHP resources */ if (pm->pcihp_io_len && (pm->pcihp_bridge_en || pm->pcihp_root_en)) { dev = aml_device("PHPR"); aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06"))); aml_append(dev, aml_name_decl("_UID", aml_string("PCI Hotplug resources"))); /* device present, functioning, decoding, not shown in UI */ aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); crs = aml_resource_template(); aml_append(crs, aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1, pm->pcihp_io_len) ); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); } aml_append(dsdt, scope); /* create S3_ / S4_ / S5_ packages if necessary */ scope = aml_scope("\\"); if (!pm->s3_disabled) { pkg = aml_package(4); aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */ aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ aml_append(pkg, aml_int(0)); /* reserved */ aml_append(pkg, aml_int(0)); /* reserved */ aml_append(scope, aml_name_decl("_S3", pkg)); } if (!pm->s4_disabled) { pkg = aml_package(4); aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */ /* PM1b_CNT.SLP_TYP, FIXME: not impl. */ aml_append(pkg, aml_int(pm->s4_val)); aml_append(pkg, aml_int(0)); /* reserved */ aml_append(pkg, aml_int(0)); /* reserved */ aml_append(scope, aml_name_decl("_S4", pkg)); } pkg = aml_package(4); aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */ aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */ aml_append(pkg, aml_int(0)); /* reserved */ aml_append(pkg, aml_int(0)); /* reserved */ aml_append(scope, aml_name_decl("_S5", pkg)); aml_append(dsdt, scope); /* create fw_cfg node, unconditionally */ { scope = aml_scope("\\_SB.PCI0"); fw_cfg_add_acpi_dsdt(scope, x86ms->fw_cfg); aml_append(dsdt, scope); } sb_scope = aml_scope("\\_SB"); { Object *pci_host = acpi_get_i386_pci_host(); if (pci_host) { PCIBus *pbus = PCI_HOST_BRIDGE(pci_host)->bus; Aml *ascope = aml_scope("PCI0"); /* Scan all PCI buses. Generate tables to support hotplug. */ build_append_pci_bus_devices(ascope, pbus); if (object_property_find(OBJECT(pbus), ACPI_PCIHP_PROP_BSEL)) { build_append_pcihp_slots(ascope, pbus); } aml_append(sb_scope, ascope); } } #ifdef CONFIG_TPM if (TPM_IS_CRB(tpm)) { dev = aml_device("TPM"); aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101"))); aml_append(dev, aml_name_decl("_STR", aml_string("TPM 2.0 Device"))); crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(TPM_CRB_ADDR_BASE, TPM_CRB_ADDR_SIZE, AML_READ_WRITE)); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(dev, aml_name_decl("_STA", aml_int(0xf))); aml_append(dev, aml_name_decl("_UID", aml_int(1))); tpm_build_ppi_acpi(tpm, dev); aml_append(sb_scope, dev); } #endif if (pcms->sgx_epc.size != 0) { uint64_t epc_base = pcms->sgx_epc.base; uint64_t epc_size = pcms->sgx_epc.size; dev = aml_device("EPC"); aml_append(dev, aml_name_decl("_HID", aml_eisaid("INT0E0C"))); aml_append(dev, aml_name_decl("_STR", aml_unicode("Enclave Page Cache 1.0"))); crs = aml_resource_template(); aml_append(crs, aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, AML_NON_CACHEABLE, AML_READ_WRITE, 0, epc_base, epc_base + epc_size - 1, 0, epc_size)); aml_append(dev, aml_name_decl("_CRS", crs)); method = aml_method("_STA", 0, AML_NOTSERIALIZED); aml_append(method, aml_return(aml_int(0x0f))); aml_append(dev, method); aml_append(sb_scope, dev); } aml_append(dsdt, sb_scope); if (pm->pcihp_bridge_en || pm->pcihp_root_en) { bool has_pcnt; Object *pci_host = acpi_get_i386_pci_host(); PCIBus *b = PCI_HOST_BRIDGE(pci_host)->bus; scope = aml_scope("\\_SB.PCI0"); has_pcnt = build_append_notfication_callback(scope, b); if (has_pcnt) { aml_append(dsdt, scope); } scope = aml_scope("_GPE"); { method = aml_method("_E01", 0, AML_NOTSERIALIZED); if (has_pcnt) { aml_append(method, aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF)); aml_append(method, aml_call0("\\_SB.PCI0.PCNT")); aml_append(method, aml_release(aml_name("\\_SB.PCI0.BLCK"))); } aml_append(scope, method); } aml_append(dsdt, scope); } /* copy AML table into ACPI tables blob and patch header there */ g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); acpi_table_end(linker, &table); free_aml_allocator(); } /* * IA-PC HPET (High Precision Event Timers) Specification (Revision: 1.0a) * 3.2.4The ACPI 2.0 HPET Description Table (HPET) */ static void build_hpet(GArray *table_data, BIOSLinker *linker, const char *oem_id, const char *oem_table_id) { AcpiTable table = { .sig = "HPET", .rev = 1, .oem_id = oem_id, .oem_table_id = oem_table_id }; acpi_table_begin(&table, table_data); /* Note timer_block_id value must be kept in sync with value advertised by * emulated hpet */ /* Event Timer Block ID */ build_append_int_noprefix(table_data, 0x8086a201, 4); /* BASE_ADDRESS */ build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 0, 0, 0, HPET_BASE); /* HPET Number */ build_append_int_noprefix(table_data, 0, 1); /* Main Counter Minimum Clock_tick in Periodic Mode */ build_append_int_noprefix(table_data, 0, 2); /* Page Protection And OEM Attribute */ build_append_int_noprefix(table_data, 0, 1); acpi_table_end(linker, &table); } #ifdef CONFIG_TPM /* * TCPA Description Table * * Following Level 00, Rev 00.37 of specs: * http://www.trustedcomputinggroup.org/resources/tcg_acpi_specification * 7.1.2 ACPI Table Layout */ static void build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog, const char *oem_id, const char *oem_table_id) { unsigned log_addr_offset; AcpiTable table = { .sig = "TCPA", .rev = 2, .oem_id = oem_id, .oem_table_id = oem_table_id }; acpi_table_begin(&table, table_data); /* Platform Class */ build_append_int_noprefix(table_data, TPM_TCPA_ACPI_CLASS_CLIENT, 2); /* Log Area Minimum Length (LAML) */ build_append_int_noprefix(table_data, TPM_LOG_AREA_MINIMUM_SIZE, 4); /* Log Area Start Address (LASA) */ log_addr_offset = table_data->len; build_append_int_noprefix(table_data, 0, 8); /* allocate/reserve space for TPM log area */ acpi_data_push(tcpalog, TPM_LOG_AREA_MINIMUM_SIZE); bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, tcpalog, 1, false /* high memory */); /* log area start address to be filled by Guest linker */ bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, log_addr_offset, 8, ACPI_BUILD_TPMLOG_FILE, 0); acpi_table_end(linker, &table); } #endif #define HOLE_640K_START (640 * KiB) #define HOLE_640K_END (1 * MiB) /* * ACPI spec, Revision 3.0 * 5.2.15 System Resource Affinity Table (SRAT) */ static void build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine) { int i; int numa_mem_start, slots; uint64_t mem_len, mem_base, next_base; MachineClass *mc = MACHINE_GET_CLASS(machine); X86MachineState *x86ms = X86_MACHINE(machine); const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine); int nb_numa_nodes = machine->numa_state->num_nodes; NodeInfo *numa_info = machine->numa_state->nodes; AcpiTable table = { .sig = "SRAT", .rev = 1, .oem_id = x86ms->oem_id, .oem_table_id = x86ms->oem_table_id }; acpi_table_begin(&table, table_data); build_append_int_noprefix(table_data, 1, 4); /* Reserved */ build_append_int_noprefix(table_data, 0, 8); /* Reserved */ for (i = 0; i < apic_ids->len; i++) { int node_id = apic_ids->cpus[i].props.node_id; uint32_t apic_id = apic_ids->cpus[i].arch_id; if (apic_id < 255) { /* 5.2.15.1 Processor Local APIC/SAPIC Affinity Structure */ build_append_int_noprefix(table_data, 0, 1); /* Type */ build_append_int_noprefix(table_data, 16, 1); /* Length */ /* Proximity Domain [7:0] */ build_append_int_noprefix(table_data, node_id, 1); build_append_int_noprefix(table_data, apic_id, 1); /* APIC ID */ /* Flags, Table 5-36 */ build_append_int_noprefix(table_data, 1, 4); build_append_int_noprefix(table_data, 0, 1); /* Local SAPIC EID */ /* Proximity Domain [31:8] */ build_append_int_noprefix(table_data, 0, 3); build_append_int_noprefix(table_data, 0, 4); /* Reserved */ } else { /* * ACPI spec, Revision 4.0 * 5.2.16.3 Processor Local x2APIC Affinity Structure */ build_append_int_noprefix(table_data, 2, 1); /* Type */ build_append_int_noprefix(table_data, 24, 1); /* Length */ build_append_int_noprefix(table_data, 0, 2); /* Reserved */ /* Proximity Domain */ build_append_int_noprefix(table_data, node_id, 4); build_append_int_noprefix(table_data, apic_id, 4); /* X2APIC ID */ /* Flags, Table 5-39 */ build_append_int_noprefix(table_data, 1 /* Enabled */, 4); build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */ build_append_int_noprefix(table_data, 0, 4); /* Reserved */ } } /* the memory map is a bit tricky, it contains at least one hole * from 640k-1M and possibly another one from 3.5G-4G. */ next_base = 0; numa_mem_start = table_data->len; for (i = 1; i < nb_numa_nodes + 1; ++i) { mem_base = next_base; mem_len = numa_info[i - 1].node_mem; next_base = mem_base + mem_len; /* Cut out the 640K hole */ if (mem_base <= HOLE_640K_START && next_base > HOLE_640K_START) { mem_len -= next_base - HOLE_640K_START; if (mem_len > 0) { build_srat_memory(table_data, mem_base, mem_len, i - 1, MEM_AFFINITY_ENABLED); } /* Check for the rare case: 640K < RAM < 1M */ if (next_base <= HOLE_640K_END) { next_base = HOLE_640K_END; continue; } mem_base = HOLE_640K_END; mem_len = next_base - HOLE_640K_END; } /* Cut out the ACPI_PCI hole */ if (mem_base <= x86ms->below_4g_mem_size && next_base > x86ms->below_4g_mem_size) { mem_len -= next_base - x86ms->below_4g_mem_size; if (mem_len > 0) { build_srat_memory(table_data, mem_base, mem_len, i - 1, MEM_AFFINITY_ENABLED); } mem_base = x86ms->above_4g_mem_start; mem_len = next_base - x86ms->below_4g_mem_size; next_base = mem_base + mem_len; } if (mem_len > 0) { build_srat_memory(table_data, mem_base, mem_len, i - 1, MEM_AFFINITY_ENABLED); } } if (machine->nvdimms_state->is_enabled) { nvdimm_build_srat(table_data); } sgx_epc_build_srat(table_data); /* * TODO: this part is not in ACPI spec and current linux kernel boots fine * without these entries. But I recall there were issues the last time I * tried to remove it with some ancient guest OS, however I can't remember * what that was so keep this around for now */ slots = (table_data->len - numa_mem_start) / 40 /* mem affinity len */; for (; slots < nb_numa_nodes + 2; slots++) { build_srat_memory(table_data, 0, 0, 0, MEM_AFFINITY_NOFLAGS); } build_srat_generic_affinity_structures(table_data); /* * Entry is required for Windows to enable memory hotplug in OS * and for Linux to enable SWIOTLB when booted with less than * 4G of RAM. Windows works better if the entry sets proximity * to the highest NUMA node in the machine. * Memory devices may override proximity set by this entry, * providing _PXM method if necessary. */ if (machine->device_memory) { build_srat_memory(table_data, machine->device_memory->base, memory_region_size(&machine->device_memory->mr), nb_numa_nodes - 1, MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); } acpi_table_end(linker, &table); } /* * Insert DMAR scope for PCI bridges and endpoint devices */ static void insert_scope(PCIBus *bus, PCIDevice *dev, void *opaque) { const size_t device_scope_size = 6 /* device scope structure */ + 2 /* 1 path entry */; GArray *scope_blob = opaque; if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { /* Dmar Scope Type: 0x02 for PCI Bridge */ build_append_int_noprefix(scope_blob, 0x02, 1); } else { /* Dmar Scope Type: 0x01 for PCI Endpoint Device */ build_append_int_noprefix(scope_blob, 0x01, 1); } /* length */ build_append_int_noprefix(scope_blob, device_scope_size, 1); /* reserved */ build_append_int_noprefix(scope_blob, 0, 2); /* enumeration_id */ build_append_int_noprefix(scope_blob, 0, 1); /* bus */ build_append_int_noprefix(scope_blob, pci_bus_num(bus), 1); /* device */ build_append_int_noprefix(scope_blob, PCI_SLOT(dev->devfn), 1); /* function */ build_append_int_noprefix(scope_blob, PCI_FUNC(dev->devfn), 1); } /* For a given PCI host bridge, walk and insert DMAR scope */ static int dmar_host_bridges(Object *obj, void *opaque) { GArray *scope_blob = opaque; if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) { PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus; if (bus && !pci_bus_bypass_iommu(bus)) { pci_for_each_device_under_bus(bus, insert_scope, scope_blob); } } return 0; } /* * Intel ® Virtualization Technology for Directed I/O * Architecture Specification. Revision 3.3 * 8.1 DMA Remapping Reporting Structure */ static void build_dmar_q35(GArray *table_data, BIOSLinker *linker, const char *oem_id, const char *oem_table_id) { uint8_t dmar_flags = 0; uint8_t rsvd10[10] = {}; /* Root complex IOAPIC uses one path only */ const size_t ioapic_scope_size = 6 /* device scope structure */ + 2 /* 1 path entry */; X86IOMMUState *iommu = x86_iommu_get_default(); IntelIOMMUState *intel_iommu = INTEL_IOMMU_DEVICE(iommu); GArray *scope_blob = g_array_new(false, true, 1); AcpiTable table = { .sig = "DMAR", .rev = 1, .oem_id = oem_id, .oem_table_id = oem_table_id }; /* * A PCI bus walk, for each PCI host bridge. * Insert scope for each PCI bridge and endpoint device which * is attached to a bus with iommu enabled. */ object_child_foreach_recursive(object_get_root(), dmar_host_bridges, scope_blob); assert(iommu); if (x86_iommu_ir_supported(iommu)) { dmar_flags |= 0x1; /* Flags: 0x1: INT_REMAP */ } acpi_table_begin(&table, table_data); /* Host Address Width */ build_append_int_noprefix(table_data, intel_iommu->aw_bits - 1, 1); build_append_int_noprefix(table_data, dmar_flags, 1); /* Flags */ g_array_append_vals(table_data, rsvd10, sizeof(rsvd10)); /* Reserved */ /* 8.3 DMAR Remapping Hardware Unit Definition structure */ build_append_int_noprefix(table_data, 0, 2); /* Type */ /* Length */ build_append_int_noprefix(table_data, 16 + ioapic_scope_size + scope_blob->len, 2); /* Flags */ build_append_int_noprefix(table_data, 0 /* Don't include all pci device */ , 1); build_append_int_noprefix(table_data, 0 , 1); /* Reserved */ build_append_int_noprefix(table_data, 0 , 2); /* Segment Number */ /* Register Base Address */ build_append_int_noprefix(table_data, Q35_HOST_BRIDGE_IOMMU_ADDR , 8); /* Scope definition for the root-complex IOAPIC. See VT-d spec * 8.3.1 (version Oct. 2014 or later). */ build_append_int_noprefix(table_data, 0x03 /* IOAPIC */, 1); /* Type */ build_append_int_noprefix(table_data, ioapic_scope_size, 1); /* Length */ build_append_int_noprefix(table_data, 0, 2); /* Reserved */ /* Enumeration ID */ build_append_int_noprefix(table_data, ACPI_BUILD_IOAPIC_ID, 1); /* Start Bus Number */ build_append_int_noprefix(table_data, Q35_PSEUDO_BUS_PLATFORM, 1); /* Path, {Device, Function} pair */ build_append_int_noprefix(table_data, PCI_SLOT(Q35_PSEUDO_DEVFN_IOAPIC), 1); build_append_int_noprefix(table_data, PCI_FUNC(Q35_PSEUDO_DEVFN_IOAPIC), 1); /* Add scope found above */ g_array_append_vals(table_data, scope_blob->data, scope_blob->len); g_array_free(scope_blob, true); if (iommu->dt_supported) { /* 8.5 Root Port ATS Capability Reporting Structure */ build_append_int_noprefix(table_data, 2, 2); /* Type */ build_append_int_noprefix(table_data, 8, 2); /* Length */ build_append_int_noprefix(table_data, 1 /* ALL_PORTS */, 1); /* Flags */ build_append_int_noprefix(table_data, 0, 1); /* Reserved */ build_append_int_noprefix(table_data, 0, 2); /* Segment Number */ } acpi_table_end(linker, &table); } /* * Windows ACPI Emulated Devices Table * (Version 1.0 - April 6, 2009) * Spec: http://download.microsoft.com/download/7/E/7/7E7662CF-CBEA-470B-A97E-CE7CE0D98DC2/WAET.docx * * Helpful to speedup Windows guests and ignored by others. */ static void build_waet(GArray *table_data, BIOSLinker *linker, const char *oem_id, const char *oem_table_id) { AcpiTable table = { .sig = "WAET", .rev = 1, .oem_id = oem_id, .oem_table_id = oem_table_id }; acpi_table_begin(&table, table_data); /* * Set "ACPI PM timer good" flag. * * Tells Windows guests that our ACPI PM timer is reliable in the * sense that guest can read it only once to obtain a reliable value. * Which avoids costly VMExits caused by guest re-reading it unnecessarily. */ build_append_int_noprefix(table_data, 1 << 1 /* ACPI PM timer good */, 4); acpi_table_end(linker, &table); } /* * IVRS table as specified in AMD IOMMU Specification v2.62, Section 5.2 * accessible here http://support.amd.com/TechDocs/48882_IOMMU.pdf */ #define IOAPIC_SB_DEVID (uint64_t)PCI_BUILD_BDF(0, PCI_DEVFN(0x14, 0)) /* * Insert IVHD entry for device and recurse, insert alias, or insert range as * necessary for the PCI topology. */ static void insert_ivhd(PCIBus *bus, PCIDevice *dev, void *opaque) { GArray *table_data = opaque; uint32_t entry; /* "Select" IVHD entry, type 0x2 */ entry = PCI_BUILD_BDF(pci_bus_num(bus), dev->devfn) << 8 | 0x2; build_append_int_noprefix(table_data, entry, 4); if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) { PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(dev)); uint8_t sec = pci_bus_num(sec_bus); uint8_t sub = dev->config[PCI_SUBORDINATE_BUS]; if (pci_bus_is_express(sec_bus)) { /* * Walk the bus if there are subordinates, otherwise use a range * to cover an entire leaf bus. We could potentially also use a * range for traversed buses, but we'd need to take care not to * create both Select and Range entries covering the same device. * This is easier and potentially more compact. * * An example bare metal system seems to use Select entries for * root ports without a slot (ie. built-ins) and Range entries * when there is a slot. The same system also only hard-codes * the alias range for an onboard PCIe-to-PCI bridge, apparently * making no effort to support nested bridges. We attempt to * be more thorough here. */ if (sec == sub) { /* leaf bus */ /* "Start of Range" IVHD entry, type 0x3 */ entry = PCI_BUILD_BDF(sec, PCI_DEVFN(0, 0)) << 8 | 0x3; build_append_int_noprefix(table_data, entry, 4); /* "End of Range" IVHD entry, type 0x4 */ entry = PCI_BUILD_BDF(sub, PCI_DEVFN(31, 7)) << 8 | 0x4; build_append_int_noprefix(table_data, entry, 4); } else { pci_for_each_device(sec_bus, sec, insert_ivhd, table_data); } } else { /* * If the secondary bus is conventional, then we need to create an * Alias range for everything downstream. The range covers the * first devfn on the secondary bus to the last devfn on the * subordinate bus. The alias target depends on legacy versus * express bridges, just as in pci_device_iommu_address_space(). * DeviceIDa vs DeviceIDb as per the AMD IOMMU spec. */ uint16_t dev_id_a, dev_id_b; dev_id_a = PCI_BUILD_BDF(sec, PCI_DEVFN(0, 0)); if (pci_is_express(dev) && pcie_cap_get_type(dev) == PCI_EXP_TYPE_PCI_BRIDGE) { dev_id_b = dev_id_a; } else { dev_id_b = PCI_BUILD_BDF(pci_bus_num(bus), dev->devfn); } /* "Alias Start of Range" IVHD entry, type 0x43, 8 bytes */ build_append_int_noprefix(table_data, dev_id_a << 8 | 0x43, 4); build_append_int_noprefix(table_data, dev_id_b << 8 | 0x0, 4); /* "End of Range" IVHD entry, type 0x4 */ entry = PCI_BUILD_BDF(sub, PCI_DEVFN(31, 7)) << 8 | 0x4; build_append_int_noprefix(table_data, entry, 4); } } } /* For all PCI host bridges, walk and insert IVHD entries */ static int ivrs_host_bridges(Object *obj, void *opaque) { GArray *ivhd_blob = opaque; if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) { PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus; if (bus && !pci_bus_bypass_iommu(bus)) { pci_for_each_device_under_bus(bus, insert_ivhd, ivhd_blob); } } return 0; } static void build_amd_iommu(GArray *table_data, BIOSLinker *linker, const char *oem_id, const char *oem_table_id) { AMDVIState *s = AMD_IOMMU_DEVICE(x86_iommu_get_default()); GArray *ivhd_blob = g_array_new(false, true, 1); AcpiTable table = { .sig = "IVRS", .rev = 1, .oem_id = oem_id, .oem_table_id = oem_table_id }; uint64_t feature_report; acpi_table_begin(&table, table_data); /* IVinfo - IO virtualization information common to all * IOMMU units in a system */ build_append_int_noprefix(table_data, (1UL << 0) | /* EFRSup */ (40UL << 8), /* PASize */ 4); /* reserved */ build_append_int_noprefix(table_data, 0, 8); /* * A PCI bus walk, for each PCI host bridge, is necessary to create a * complete set of IVHD entries. Do this into a separate blob so that we * can calculate the total IVRS table length here and then append the new * blob further below. Fall back to an entry covering all devices, which * is sufficient when no aliases are present. */ object_child_foreach_recursive(object_get_root(), ivrs_host_bridges, ivhd_blob); if (!ivhd_blob->len) { /* * Type 1 device entry reporting all devices * These are 4-byte device entries currently reporting the range of * Refer to Spec - Table 95:IVHD Device Entry Type Codes(4-byte) */ build_append_int_noprefix(ivhd_blob, 0x0000001, 4); } /* * When interrupt remapping is supported, we add a special IVHD device * for type IO-APIC * Refer to spec - Table 95: IVHD device entry type codes * * Linux IOMMU driver checks for the special IVHD device (type IO-APIC). * See Linux kernel commit 'c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059' */ if (x86_iommu_ir_supported(x86_iommu_get_default())) { build_append_int_noprefix(ivhd_blob, (0x1ull << 56) | /* type IOAPIC */ (IOAPIC_SB_DEVID << 40) | /* IOAPIC devid */ 0x48, /* special device */ 8); } /* IVHD definition - type 10h */ build_append_int_noprefix(table_data, 0x10, 1); /* virtualization flags */ build_append_int_noprefix(table_data, (1UL << 0) | /* HtTunEn */ (1UL << 4) | /* iotblSup */ (1UL << 6) | /* PrefSup */ (1UL << 7), /* PPRSup */ 1); /* IVHD length */ build_append_int_noprefix(table_data, ivhd_blob->len + 24, 2); /* DeviceID */ build_append_int_noprefix(table_data, object_property_get_int(OBJECT(&s->pci), "addr", &error_abort), 2); /* Capability offset */ build_append_int_noprefix(table_data, s->pci.capab_offset, 2); /* IOMMU base address */ build_append_int_noprefix(table_data, s->mr_mmio.addr, 8); /* PCI Segment Group */ build_append_int_noprefix(table_data, 0, 2); /* IOMMU info */ build_append_int_noprefix(table_data, 0, 2); /* IOMMU Feature Reporting */ feature_report = (48UL << 30) | /* HATS */ (48UL << 28) | /* GATS */ (1UL << 2) | /* GTSup */ (1UL << 6); /* GASup */ if (s->xtsup) { feature_report |= (1UL << 0); /* XTSup */ } build_append_int_noprefix(table_data, feature_report, 4); /* IVHD entries as found above */ g_array_append_vals(table_data, ivhd_blob->data, ivhd_blob->len); /* IVHD definition - type 11h */ build_append_int_noprefix(table_data, 0x11, 1); /* virtualization flags */ build_append_int_noprefix(table_data, (1UL << 0) | /* HtTunEn */ (1UL << 4), /* iotblSup */ 1); /* IVHD length */ build_append_int_noprefix(table_data, ivhd_blob->len + 40, 2); /* DeviceID */ build_append_int_noprefix(table_data, object_property_get_int(OBJECT(&s->pci), "addr", &error_abort), 2); /* Capability offset */ build_append_int_noprefix(table_data, s->pci.capab_offset, 2); /* IOMMU base address */ build_append_int_noprefix(table_data, s->mr_mmio.addr, 8); /* PCI Segment Group */ build_append_int_noprefix(table_data, 0, 2); /* IOMMU info */ build_append_int_noprefix(table_data, 0, 2); /* IOMMU Attributes */ build_append_int_noprefix(table_data, 0, 4); /* EFR Register Image */ build_append_int_noprefix(table_data, amdvi_extended_feature_register(s), 8); /* EFR Register Image 2 */ build_append_int_noprefix(table_data, 0, 8); /* IVHD entries as found above */ g_array_append_vals(table_data, ivhd_blob->data, ivhd_blob->len); g_array_free(ivhd_blob, TRUE); acpi_table_end(linker, &table); } typedef struct AcpiBuildState { /* Copy of table in RAM (for patching). */ MemoryRegion *table_mr; /* Is table patched? */ uint8_t patched; MemoryRegion *rsdp_mr; MemoryRegion *linker_mr; } AcpiBuildState; static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg) { Object *pci_host; QObject *o; pci_host = acpi_get_i386_pci_host(); if (!pci_host) { return false; } o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL); if (!o) { return false; } mcfg->base = qnum_get_uint(qobject_to(QNum, o)); qobject_unref(o); if (mcfg->base == PCIE_BASE_ADDR_UNMAPPED) { return false; } o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL); assert(o); mcfg->size = qnum_get_uint(qobject_to(QNum, o)); qobject_unref(o); return true; } static void acpi_build(AcpiBuildTables *tables, MachineState *machine) { PCMachineState *pcms = PC_MACHINE(machine); X86MachineState *x86ms = X86_MACHINE(machine); DeviceState *iommu = pcms->iommu; GArray *table_offsets; unsigned facs, dsdt, rsdt; AcpiPmInfo pm; AcpiMiscInfo misc; AcpiMcfgInfo mcfg; Range pci_hole = {}, pci_hole64 = {}; uint8_t *u; GArray *tables_blob = tables->table_data; AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL }; Object *vmgenid_dev; char *oem_id; char *oem_table_id; acpi_get_pm_info(machine, &pm); acpi_get_misc_info(&misc); acpi_get_pci_holes(&pci_hole, &pci_hole64); acpi_get_slic_oem(&slic_oem); if (slic_oem.id) { oem_id = slic_oem.id; } else { oem_id = x86ms->oem_id; } if (slic_oem.table_id) { oem_table_id = slic_oem.table_id; } else { oem_table_id = x86ms->oem_table_id; } table_offsets = g_array_new(false, true /* clear */, sizeof(uint32_t)); ACPI_BUILD_DPRINTF("init ACPI tables\n"); bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE, tables_blob, 64 /* Ensure FACS is aligned */, false /* high memory */); /* * FACS is pointed to by FADT. * We place it first since it's the only table that has alignment * requirements. */ facs = tables_blob->len; build_facs(tables_blob); /* DSDT is pointed to by FADT */ dsdt = tables_blob->len; build_dsdt(tables_blob, tables->linker, &pm, &misc, &pci_hole, &pci_hole64, machine); /* ACPI tables pointed to by RSDT */ acpi_add_table(table_offsets, tables_blob); pm.fadt.facs_tbl_offset = &facs; pm.fadt.dsdt_tbl_offset = &dsdt; pm.fadt.xdsdt_tbl_offset = &dsdt; build_fadt(tables_blob, tables->linker, &pm.fadt, oem_id, oem_table_id); acpi_add_table(table_offsets, tables_blob); acpi_build_madt(tables_blob, tables->linker, x86ms, x86ms->oem_id, x86ms->oem_table_id); #ifdef CONFIG_ACPI_ERST { Object *erst_dev; erst_dev = find_erst_dev(); if (erst_dev) { acpi_add_table(table_offsets, tables_blob); build_erst(tables_blob, tables->linker, erst_dev, x86ms->oem_id, x86ms->oem_table_id); } } #endif vmgenid_dev = find_vmgenid_dev(); if (vmgenid_dev) { acpi_add_table(table_offsets, tables_blob); vmgenid_build_acpi(VMGENID(vmgenid_dev), tables_blob, tables->vmgenid, tables->linker, x86ms->oem_id); } if (misc.has_hpet) { acpi_add_table(table_offsets, tables_blob); build_hpet(tables_blob, tables->linker, x86ms->oem_id, x86ms->oem_table_id); } #ifdef CONFIG_TPM if (misc.tpm_version != TPM_VERSION_UNSPEC) { if (misc.tpm_version == TPM_VERSION_1_2) { acpi_add_table(table_offsets, tables_blob); build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog, x86ms->oem_id, x86ms->oem_table_id); } else { /* TPM_VERSION_2_0 */ acpi_add_table(table_offsets, tables_blob); build_tpm2(tables_blob, tables->linker, tables->tcpalog, x86ms->oem_id, x86ms->oem_table_id); } } #endif if (machine->numa_state->num_nodes) { acpi_add_table(table_offsets, tables_blob); build_srat(tables_blob, tables->linker, machine); if (machine->numa_state->have_numa_distance) { acpi_add_table(table_offsets, tables_blob); build_slit(tables_blob, tables->linker, machine, x86ms->oem_id, x86ms->oem_table_id); } if (machine->numa_state->hmat_enabled) { acpi_add_table(table_offsets, tables_blob); build_hmat(tables_blob, tables->linker, machine->numa_state, x86ms->oem_id, x86ms->oem_table_id); } } if (acpi_get_mcfg(&mcfg)) { acpi_add_table(table_offsets, tables_blob); build_mcfg(tables_blob, tables->linker, &mcfg, x86ms->oem_id, x86ms->oem_table_id); } if (object_dynamic_cast(OBJECT(iommu), TYPE_AMD_IOMMU_DEVICE)) { acpi_add_table(table_offsets, tables_blob); build_amd_iommu(tables_blob, tables->linker, x86ms->oem_id, x86ms->oem_table_id); } else if (object_dynamic_cast(OBJECT(iommu), TYPE_INTEL_IOMMU_DEVICE)) { acpi_add_table(table_offsets, tables_blob); build_dmar_q35(tables_blob, tables->linker, x86ms->oem_id, x86ms->oem_table_id); } else if (object_dynamic_cast(OBJECT(iommu), TYPE_VIRTIO_IOMMU_PCI)) { PCIDevice *pdev = PCI_DEVICE(iommu); acpi_add_table(table_offsets, tables_blob); build_viot(machine, tables_blob, tables->linker, pci_get_bdf(pdev), x86ms->oem_id, x86ms->oem_table_id); } if (machine->nvdimms_state->is_enabled) { nvdimm_build_acpi(table_offsets, tables_blob, tables->linker, machine->nvdimms_state, machine->ram_slots, x86ms->oem_id, x86ms->oem_table_id); } if (pcms->cxl_devices_state.is_enabled) { cxl_build_cedt(table_offsets, tables_blob, tables->linker, x86ms->oem_id, x86ms->oem_table_id, &pcms->cxl_devices_state); } acpi_add_table(table_offsets, tables_blob); build_waet(tables_blob, tables->linker, x86ms->oem_id, x86ms->oem_table_id); /* Add tables supplied by user (if any) */ for (u = acpi_table_first(); u; u = acpi_table_next(u)) { unsigned len = acpi_table_len(u); acpi_add_table(table_offsets, tables_blob); g_array_append_vals(tables_blob, u, len); } /* RSDT is pointed to by RSDP */ rsdt = tables_blob->len; build_rsdt(tables_blob, tables->linker, table_offsets, oem_id, oem_table_id); /* RSDP is in FSEG memory, so allocate it separately */ { AcpiRsdpData rsdp_data = { .revision = 0, .oem_id = x86ms->oem_id, .xsdt_tbl_offset = NULL, .rsdt_tbl_offset = &rsdt, }; build_rsdp(tables->rsdp, tables->linker, &rsdp_data); } /* We'll expose it all to Guest so we want to reduce * chance of size changes. * * We used to align the tables to 4k, but of course this would * too simple to be enough. 4k turned out to be too small an * alignment very soon, and in fact it is almost impossible to * keep the table size stable for all (max_cpus, max_memory_slots) * combinations. */ acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE); acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE); /* Cleanup memory that's no longer used. */ g_array_free(table_offsets, true); g_free(slic_oem.id); g_free(slic_oem.table_id); } static void acpi_ram_update(MemoryRegion *mr, GArray *data) { uint32_t size = acpi_data_len(data); /* Make sure RAM size is correct - in case it got changed e.g. by migration */ memory_region_ram_resize(mr, size, &error_abort); memcpy(memory_region_get_ram_ptr(mr), data->data, size); memory_region_set_dirty(mr, 0, size); } static void acpi_build_update(void *build_opaque) { AcpiBuildState *build_state = build_opaque; AcpiBuildTables tables; /* No state to update or already patched? Nothing to do. */ if (!build_state || build_state->patched) { return; } build_state->patched = 1; acpi_build_tables_init(&tables); acpi_build(&tables, MACHINE(qdev_get_machine())); acpi_ram_update(build_state->table_mr, tables.table_data); acpi_ram_update(build_state->rsdp_mr, tables.rsdp); acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob); acpi_build_tables_cleanup(&tables, true); } static void acpi_build_reset(void *build_opaque) { AcpiBuildState *build_state = build_opaque; build_state->patched = 0; } static const VMStateDescription vmstate_acpi_build = { .name = "acpi_build", .version_id = 1, .minimum_version_id = 1, .fields = (const VMStateField[]) { VMSTATE_UINT8(patched, AcpiBuildState), VMSTATE_END_OF_LIST() }, }; void acpi_setup(void) { PCMachineState *pcms = PC_MACHINE(qdev_get_machine()); X86MachineState *x86ms = X86_MACHINE(pcms); AcpiBuildTables tables; AcpiBuildState *build_state; Object *vmgenid_dev; #ifdef CONFIG_TPM TPMIf *tpm; static FwCfgTPMConfig tpm_config; #endif if (!x86ms->fw_cfg) { ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n"); return; } if (!pcms->acpi_build_enabled) { ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n"); return; } if (!x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) { ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n"); return; } build_state = g_malloc0(sizeof *build_state); acpi_build_tables_init(&tables); acpi_build(&tables, MACHINE(pcms)); /* Now expose it all to Guest */ build_state->table_mr = acpi_add_rom_blob(acpi_build_update, build_state, tables.table_data, ACPI_BUILD_TABLE_FILE); assert(build_state->table_mr != NULL); build_state->linker_mr = acpi_add_rom_blob(acpi_build_update, build_state, tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE); #ifdef CONFIG_TPM fw_cfg_add_file(x86ms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data, acpi_data_len(tables.tcpalog)); tpm = tpm_find(); if (tpm && object_property_get_bool(OBJECT(tpm), "ppi", &error_abort)) { tpm_config = (FwCfgTPMConfig) { .tpmppi_address = cpu_to_le32(TPM_PPI_ADDR_BASE), .tpm_version = tpm_get_version(tpm), .tpmppi_version = TPM_PPI_VERSION_1_30 }; fw_cfg_add_file(x86ms->fw_cfg, "etc/tpm/config", &tpm_config, sizeof tpm_config); } #endif vmgenid_dev = find_vmgenid_dev(); if (vmgenid_dev) { vmgenid_add_fw_cfg(VMGENID(vmgenid_dev), x86ms->fw_cfg, tables.vmgenid); } build_state->rsdp_mr = acpi_add_rom_blob(acpi_build_update, build_state, tables.rsdp, ACPI_BUILD_RSDP_FILE); qemu_register_reset(acpi_build_reset, build_state); acpi_build_reset(build_state); vmstate_register(NULL, 0, &vmstate_acpi_build, build_state); /* Cleanup tables but don't free the memory: we track it * in build_state. */ acpi_build_tables_cleanup(&tables, false); }