/* 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 "acpi-build.h" #include #include #include "qemu-common.h" #include "qemu/bitmap.h" #include "qemu/osdep.h" #include "qemu/range.h" #include "qemu/error-report.h" #include "hw/pci/pci.h" #include "qom/cpu.h" #include "hw/i386/pc.h" #include "target-i386/cpu.h" #include "hw/timer/hpet.h" #include "hw/i386/acpi-defs.h" #include "hw/acpi/acpi.h" #include "hw/nvram/fw_cfg.h" #include "hw/acpi/bios-linker-loader.h" #include "hw/loader.h" #include "hw/isa/isa.h" #include "hw/acpi/memory_hotplug.h" #include "sysemu/tpm.h" #include "hw/acpi/tpm.h" /* Supported chipsets: */ #include "hw/acpi/piix4.h" #include "hw/acpi/pcihp.h" #include "hw/i386/ich9.h" #include "hw/pci/pci_bus.h" #include "hw/pci-host/q35.h" #include "hw/i386/intel_iommu.h" #include "hw/i386/q35-acpi-dsdt.hex" #include "hw/i386/acpi-dsdt.hex" #include "hw/acpi/aml-build.h" #include "qapi/qmp/qint.h" #include "qom/qom-qobject.h" #include "exec/ram_addr.h" /* 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_LEGACY_CPU_AML_SIZE 97 #define ACPI_BUILD_ALIGN_SIZE 0x1000 #define ACPI_BUILD_TABLE_SIZE 0x20000 /* Reserve RAM space for tables: add another order of magnitude. */ #define ACPI_BUILD_TABLE_MAX_SIZE 0x200000 /* #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 AcpiCpuInfo { DECLARE_BITMAP(found_cpus, ACPI_CPU_HOTPLUG_ID_LIMIT); } AcpiCpuInfo; typedef struct AcpiMcfgInfo { uint64_t mcfg_base; uint32_t mcfg_size; } AcpiMcfgInfo; typedef struct AcpiPmInfo { bool s3_disabled; bool s4_disabled; bool pcihp_bridge_en; uint8_t s4_val; uint16_t sci_int; uint8_t acpi_enable_cmd; uint8_t acpi_disable_cmd; uint32_t gpe0_blk; uint32_t gpe0_blk_len; uint32_t io_base; } AcpiPmInfo; typedef struct AcpiMiscInfo { bool has_hpet; bool has_tpm; DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX); const unsigned char *dsdt_code; unsigned dsdt_size; uint16_t pvpanic_port; } AcpiMiscInfo; typedef struct AcpiBuildPciBusHotplugState { GArray *device_table; GArray *notify_table; struct AcpiBuildPciBusHotplugState *parent; bool pcihp_bridge_en; } AcpiBuildPciBusHotplugState; static void acpi_get_dsdt(AcpiMiscInfo *info) { uint16_t *applesmc_sta; Object *piix = piix4_pm_find(); Object *lpc = ich9_lpc_find(); assert(!!piix != !!lpc); if (piix) { info->dsdt_code = AcpiDsdtAmlCode; info->dsdt_size = sizeof AcpiDsdtAmlCode; applesmc_sta = piix_dsdt_applesmc_sta; } if (lpc) { info->dsdt_code = Q35AcpiDsdtAmlCode; info->dsdt_size = sizeof Q35AcpiDsdtAmlCode; applesmc_sta = q35_dsdt_applesmc_sta; } /* Patch in appropriate value for AppleSMC _STA */ *(uint8_t *)(info->dsdt_code + *applesmc_sta) = applesmc_find() ? 0x0b : 0x00; } static int acpi_add_cpu_info(Object *o, void *opaque) { AcpiCpuInfo *cpu = opaque; uint64_t apic_id; if (object_dynamic_cast(o, TYPE_CPU)) { apic_id = object_property_get_int(o, "apic-id", NULL); assert(apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT); set_bit(apic_id, cpu->found_cpus); } object_child_foreach(o, acpi_add_cpu_info, opaque); return 0; } static void acpi_get_cpu_info(AcpiCpuInfo *cpu) { Object *root = object_get_root(); memset(cpu->found_cpus, 0, sizeof cpu->found_cpus); object_child_foreach(root, acpi_add_cpu_info, cpu); } static void acpi_get_pm_info(AcpiPmInfo *pm) { Object *piix = piix4_pm_find(); Object *lpc = ich9_lpc_find(); Object *obj = NULL; QObject *o; if (piix) { obj = piix; } if (lpc) { obj = lpc; } assert(obj); /* Fill in optional s3/s4 related properties */ o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL); if (o) { pm->s3_disabled = qint_get_int(qobject_to_qint(o)); } else { pm->s3_disabled = false; } qobject_decref(o); o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL); if (o) { pm->s4_disabled = qint_get_int(qobject_to_qint(o)); } else { pm->s4_disabled = false; } qobject_decref(o); o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL); if (o) { pm->s4_val = qint_get_int(qobject_to_qint(o)); } else { pm->s4_val = false; } qobject_decref(o); /* Fill in mandatory properties */ pm->sci_int = object_property_get_int(obj, ACPI_PM_PROP_SCI_INT, NULL); pm->acpi_enable_cmd = object_property_get_int(obj, ACPI_PM_PROP_ACPI_ENABLE_CMD, NULL); pm->acpi_disable_cmd = object_property_get_int(obj, ACPI_PM_PROP_ACPI_DISABLE_CMD, NULL); pm->io_base = object_property_get_int(obj, ACPI_PM_PROP_PM_IO_BASE, NULL); pm->gpe0_blk = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK, NULL); pm->gpe0_blk_len = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK_LEN, NULL); pm->pcihp_bridge_en = object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support", NULL); } static void acpi_get_misc_info(AcpiMiscInfo *info) { info->has_hpet = hpet_find(); info->has_tpm = tpm_find(); info->pvpanic_port = pvpanic_port(); } static void acpi_get_pci_info(PcPciInfo *info) { Object *pci_host; bool ambiguous; pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous); g_assert(!ambiguous); g_assert(pci_host); info->w32.begin = object_property_get_int(pci_host, PCI_HOST_PROP_PCI_HOLE_START, NULL); info->w32.end = object_property_get_int(pci_host, PCI_HOST_PROP_PCI_HOLE_END, NULL); info->w64.begin = object_property_get_int(pci_host, PCI_HOST_PROP_PCI_HOLE64_START, NULL); info->w64.end = object_property_get_int(pci_host, PCI_HOST_PROP_PCI_HOLE64_END, NULL); } #define ACPI_BUILD_APPNAME "Bochs" #define ACPI_BUILD_APPNAME6 "BOCHS " #define ACPI_BUILD_APPNAME4 "BXPC" #define ACPI_BUILD_TABLE_FILE "etc/acpi/tables" #define ACPI_BUILD_RSDP_FILE "etc/acpi/rsdp" #define ACPI_BUILD_TPMLOG_FILE "etc/tpm/log" static void build_header(GArray *linker, GArray *table_data, AcpiTableHeader *h, const char *sig, int len, uint8_t rev) { memcpy(&h->signature, sig, 4); h->length = cpu_to_le32(len); h->revision = rev; memcpy(h->oem_id, ACPI_BUILD_APPNAME6, 6); memcpy(h->oem_table_id, ACPI_BUILD_APPNAME4, 4); memcpy(h->oem_table_id + 4, sig, 4); h->oem_revision = cpu_to_le32(1); memcpy(h->asl_compiler_id, ACPI_BUILD_APPNAME4, 4); h->asl_compiler_revision = cpu_to_le32(1); h->checksum = 0; /* Checksum to be filled in by Guest linker */ bios_linker_loader_add_checksum(linker, ACPI_BUILD_TABLE_FILE, table_data->data, h, len, &h->checksum); } static GArray *build_alloc_method(const char *name, uint8_t arg_count) { GArray *method = build_alloc_array(); build_append_namestring(method, "%s", name); build_append_byte(method, arg_count); /* MethodFlags: ArgCount */ return method; } static void build_append_and_cleanup_method(GArray *device, GArray *method) { uint8_t op = 0x14; /* MethodOp */ build_package(method, op); build_append_array(device, method); build_free_array(method); } static void build_append_notify_target_ifequal(GArray *method, GArray *target_name, uint32_t value, int size) { GArray *notify = build_alloc_array(); uint8_t op = 0xA0; /* IfOp */ build_append_byte(notify, 0x93); /* LEqualOp */ build_append_byte(notify, 0x68); /* Arg0Op */ build_append_value(notify, value, size); build_append_byte(notify, 0x86); /* NotifyOp */ build_append_array(notify, target_name); build_append_byte(notify, 0x69); /* Arg1Op */ /* Pack it up */ build_package(notify, op); build_append_array(method, notify); build_free_array(notify); } /* End here */ #define ACPI_PORT_SMI_CMD 0x00b2 /* TODO: this is APM_CNT_IOPORT */ static inline void *acpi_data_push(GArray *table_data, unsigned size) { unsigned off = table_data->len; g_array_set_size(table_data, off + size); return table_data->data + off; } static unsigned acpi_data_len(GArray *table) { #if GLIB_CHECK_VERSION(2, 22, 0) assert(g_array_get_element_size(table) == 1); #endif return table->len; } 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)); } /* Set a value within table in a safe manner */ #define ACPI_BUILD_SET_LE(table, size, off, bits, val) \ do { \ uint64_t ACPI_BUILD_SET_LE_val = cpu_to_le64(val); \ memcpy(acpi_data_get_ptr(table, size, off, \ (bits) / BITS_PER_BYTE), \ &ACPI_BUILD_SET_LE_val, \ (bits) / BITS_PER_BYTE); \ } while (0) static inline void *acpi_data_get_ptr(uint8_t *table_data, unsigned table_size, unsigned off, unsigned size) { assert(off + size > off); assert(off + size <= table_size); return table_data + off; } static inline void acpi_add_table(GArray *table_offsets, GArray *table_data) { uint32_t offset = cpu_to_le32(table_data->len); g_array_append_val(table_offsets, offset); } /* FACS */ static void build_facs(GArray *table_data, GArray *linker, PcGuestInfo *guest_info) { AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs); memcpy(&facs->signature, "FACS", 4); facs->length = cpu_to_le32(sizeof(*facs)); } /* Load chipset information in FADT */ static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm) { fadt->model = 1; fadt->reserved1 = 0; fadt->sci_int = cpu_to_le16(pm->sci_int); fadt->smi_cmd = cpu_to_le32(ACPI_PORT_SMI_CMD); fadt->acpi_enable = pm->acpi_enable_cmd; fadt->acpi_disable = pm->acpi_disable_cmd; /* EVT, CNT, TMR offset matches hw/acpi/core.c */ fadt->pm1a_evt_blk = cpu_to_le32(pm->io_base); fadt->pm1a_cnt_blk = cpu_to_le32(pm->io_base + 0x04); fadt->pm_tmr_blk = cpu_to_le32(pm->io_base + 0x08); fadt->gpe0_blk = cpu_to_le32(pm->gpe0_blk); /* EVT, CNT, TMR length matches hw/acpi/core.c */ fadt->pm1_evt_len = 4; fadt->pm1_cnt_len = 2; fadt->pm_tmr_len = 4; fadt->gpe0_blk_len = pm->gpe0_blk_len; fadt->plvl2_lat = cpu_to_le16(0xfff); /* C2 state not supported */ fadt->plvl3_lat = cpu_to_le16(0xfff); /* C3 state not supported */ fadt->flags = cpu_to_le32((1 << ACPI_FADT_F_WBINVD) | (1 << ACPI_FADT_F_PROC_C1) | (1 << ACPI_FADT_F_SLP_BUTTON) | (1 << ACPI_FADT_F_RTC_S4)); fadt->flags |= cpu_to_le32(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 */ if (max_cpus > 8) { fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL); } } /* FADT */ static void build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm, unsigned facs, unsigned dsdt) { AcpiFadtDescriptorRev1 *fadt = acpi_data_push(table_data, sizeof(*fadt)); fadt->firmware_ctrl = cpu_to_le32(facs); /* FACS address to be filled by Guest linker */ bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, ACPI_BUILD_TABLE_FILE, table_data, &fadt->firmware_ctrl, sizeof fadt->firmware_ctrl); fadt->dsdt = cpu_to_le32(dsdt); /* DSDT address to be filled by Guest linker */ bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, ACPI_BUILD_TABLE_FILE, table_data, &fadt->dsdt, sizeof fadt->dsdt); fadt_setup(fadt, pm); build_header(linker, table_data, (void *)fadt, "FACP", sizeof(*fadt), 1); } static void build_madt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu, PcGuestInfo *guest_info) { int madt_start = table_data->len; AcpiMultipleApicTable *madt; AcpiMadtIoApic *io_apic; AcpiMadtIntsrcovr *intsrcovr; AcpiMadtLocalNmi *local_nmi; int i; madt = acpi_data_push(table_data, sizeof *madt); madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS); madt->flags = cpu_to_le32(1); for (i = 0; i < guest_info->apic_id_limit; i++) { AcpiMadtProcessorApic *apic = acpi_data_push(table_data, sizeof *apic); apic->type = ACPI_APIC_PROCESSOR; apic->length = sizeof(*apic); apic->processor_id = i; apic->local_apic_id = i; if (test_bit(i, cpu->found_cpus)) { apic->flags = cpu_to_le32(1); } else { apic->flags = cpu_to_le32(0); } } io_apic = acpi_data_push(table_data, sizeof *io_apic); io_apic->type = ACPI_APIC_IO; io_apic->length = sizeof(*io_apic); #define ACPI_BUILD_IOAPIC_ID 0x0 io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID; io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS); io_apic->interrupt = cpu_to_le32(0); if (guest_info->apic_xrupt_override) { intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; intsrcovr->length = sizeof(*intsrcovr); intsrcovr->source = 0; intsrcovr->gsi = cpu_to_le32(2); intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */ } for (i = 1; i < 16; i++) { #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11)) if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) { /* No need for a INT source override structure. */ continue; } intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; intsrcovr->length = sizeof(*intsrcovr); intsrcovr->source = i; intsrcovr->gsi = cpu_to_le32(i); intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */ } local_nmi = acpi_data_push(table_data, sizeof *local_nmi); local_nmi->type = ACPI_APIC_LOCAL_NMI; local_nmi->length = sizeof(*local_nmi); local_nmi->processor_id = 0xff; /* all processors */ local_nmi->flags = cpu_to_le16(0); local_nmi->lint = 1; /* ACPI_LINT1 */ build_header(linker, table_data, (void *)(table_data->data + madt_start), "APIC", table_data->len - madt_start, 1); } /* Encode a hex value */ static inline char acpi_get_hex(uint32_t val) { val &= 0x0f; return (val <= 9) ? ('0' + val) : ('A' + val - 10); } #include "hw/i386/ssdt-proc.hex" /* 0x5B 0x83 ProcessorOp PkgLength NameString ProcID */ #define ACPI_PROC_OFFSET_CPUHEX (*ssdt_proc_name - *ssdt_proc_start + 2) #define ACPI_PROC_OFFSET_CPUID1 (*ssdt_proc_name - *ssdt_proc_start + 4) #define ACPI_PROC_OFFSET_CPUID2 (*ssdt_proc_id - *ssdt_proc_start) #define ACPI_PROC_SIZEOF (*ssdt_proc_end - *ssdt_proc_start) #define ACPI_PROC_AML (ssdp_proc_aml + *ssdt_proc_start) /* 0x5B 0x82 DeviceOp PkgLength NameString */ #define ACPI_PCIHP_OFFSET_HEX (*ssdt_pcihp_name - *ssdt_pcihp_start + 1) #define ACPI_PCIHP_OFFSET_ID (*ssdt_pcihp_id - *ssdt_pcihp_start) #define ACPI_PCIHP_OFFSET_ADR (*ssdt_pcihp_adr - *ssdt_pcihp_start) #define ACPI_PCIHP_OFFSET_EJ0 (*ssdt_pcihp_ej0 - *ssdt_pcihp_start) #define ACPI_PCIHP_SIZEOF (*ssdt_pcihp_end - *ssdt_pcihp_start) #define ACPI_PCIHP_AML (ssdp_pcihp_aml + *ssdt_pcihp_start) #define ACPI_PCINOHP_OFFSET_HEX (*ssdt_pcinohp_name - *ssdt_pcinohp_start + 1) #define ACPI_PCINOHP_OFFSET_ADR (*ssdt_pcinohp_adr - *ssdt_pcinohp_start) #define ACPI_PCINOHP_SIZEOF (*ssdt_pcinohp_end - *ssdt_pcinohp_start) #define ACPI_PCINOHP_AML (ssdp_pcihp_aml + *ssdt_pcinohp_start) #define ACPI_PCIVGA_OFFSET_HEX (*ssdt_pcivga_name - *ssdt_pcivga_start + 1) #define ACPI_PCIVGA_OFFSET_ADR (*ssdt_pcivga_adr - *ssdt_pcivga_start) #define ACPI_PCIVGA_SIZEOF (*ssdt_pcivga_end - *ssdt_pcivga_start) #define ACPI_PCIVGA_AML (ssdp_pcihp_aml + *ssdt_pcivga_start) #define ACPI_PCIQXL_OFFSET_HEX (*ssdt_pciqxl_name - *ssdt_pciqxl_start + 1) #define ACPI_PCIQXL_OFFSET_ADR (*ssdt_pciqxl_adr - *ssdt_pciqxl_start) #define ACPI_PCIQXL_SIZEOF (*ssdt_pciqxl_end - *ssdt_pciqxl_start) #define ACPI_PCIQXL_AML (ssdp_pcihp_aml + *ssdt_pciqxl_start) #include "hw/i386/ssdt-mem.hex" /* 0x5B 0x82 DeviceOp PkgLength NameString DimmID */ #define ACPI_MEM_OFFSET_HEX (*ssdt_mem_name - *ssdt_mem_start + 2) #define ACPI_MEM_OFFSET_ID (*ssdt_mem_id - *ssdt_mem_start + 7) #define ACPI_MEM_SIZEOF (*ssdt_mem_end - *ssdt_mem_start) #define ACPI_MEM_AML (ssdm_mem_aml + *ssdt_mem_start) #define ACPI_SSDT_SIGNATURE 0x54445353 /* SSDT */ #define ACPI_SSDT_HEADER_LENGTH 36 #include "hw/i386/ssdt-misc.hex" #include "hw/i386/ssdt-pcihp.hex" #include "hw/i386/ssdt-tpm.hex" static void build_append_notify_method(GArray *device, const char *name, const char *format, int count) { int i; GArray *method = build_alloc_method(name, 2); for (i = 0; i < count; i++) { GArray *target = build_alloc_array(); build_append_namestring(target, format, i); assert(i < 256); /* Fits in 1 byte */ build_append_notify_target_ifequal(method, target, i, 1); build_free_array(target); } build_append_and_cleanup_method(device, method); } static void patch_pcihp(int slot, uint8_t *ssdt_ptr) { unsigned devfn = PCI_DEVFN(slot, 0); ssdt_ptr[ACPI_PCIHP_OFFSET_HEX] = acpi_get_hex(devfn >> 4); ssdt_ptr[ACPI_PCIHP_OFFSET_HEX + 1] = acpi_get_hex(devfn); ssdt_ptr[ACPI_PCIHP_OFFSET_ID] = slot; ssdt_ptr[ACPI_PCIHP_OFFSET_ADR + 2] = slot; } static void patch_pcinohp(int slot, uint8_t *ssdt_ptr) { unsigned devfn = PCI_DEVFN(slot, 0); ssdt_ptr[ACPI_PCINOHP_OFFSET_HEX] = acpi_get_hex(devfn >> 4); ssdt_ptr[ACPI_PCINOHP_OFFSET_HEX + 1] = acpi_get_hex(devfn); ssdt_ptr[ACPI_PCINOHP_OFFSET_ADR + 2] = slot; } static void patch_pcivga(int slot, uint8_t *ssdt_ptr) { unsigned devfn = PCI_DEVFN(slot, 0); ssdt_ptr[ACPI_PCIVGA_OFFSET_HEX] = acpi_get_hex(devfn >> 4); ssdt_ptr[ACPI_PCIVGA_OFFSET_HEX + 1] = acpi_get_hex(devfn); ssdt_ptr[ACPI_PCIVGA_OFFSET_ADR + 2] = slot; } static void patch_pciqxl(int slot, uint8_t *ssdt_ptr) { unsigned devfn = PCI_DEVFN(slot, 0); ssdt_ptr[ACPI_PCIQXL_OFFSET_HEX] = acpi_get_hex(devfn >> 4); ssdt_ptr[ACPI_PCIQXL_OFFSET_HEX + 1] = acpi_get_hex(devfn); ssdt_ptr[ACPI_PCIQXL_OFFSET_ADR + 2] = slot; } /* Assign BSEL property to all buses. In the future, this can be changed * to only assign to buses that support hotplug. */ static void *acpi_set_bsel(PCIBus *bus, void *opaque) { unsigned *bsel_alloc = opaque; unsigned *bus_bsel; if (qbus_is_hotpluggable(BUS(bus))) { bus_bsel = g_malloc(sizeof *bus_bsel); *bus_bsel = (*bsel_alloc)++; object_property_add_uint32_ptr(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, bus_bsel, NULL); } return bsel_alloc; } static void acpi_set_pci_info(void) { PCIBus *bus = find_i440fx(); /* TODO: Q35 support */ unsigned bsel_alloc = 0; if (bus) { /* Scan all PCI buses. Set property to enable acpi based hotplug. */ pci_for_each_bus_depth_first(bus, acpi_set_bsel, NULL, &bsel_alloc); } } static void build_pci_bus_state_init(AcpiBuildPciBusHotplugState *state, AcpiBuildPciBusHotplugState *parent, bool pcihp_bridge_en) { state->parent = parent; state->device_table = build_alloc_array(); state->notify_table = build_alloc_array(); state->pcihp_bridge_en = pcihp_bridge_en; } static void build_pci_bus_state_cleanup(AcpiBuildPciBusHotplugState *state) { build_free_array(state->device_table); build_free_array(state->notify_table); } static void *build_pci_bus_begin(PCIBus *bus, void *parent_state) { AcpiBuildPciBusHotplugState *parent = parent_state; AcpiBuildPciBusHotplugState *child = g_malloc(sizeof *child); build_pci_bus_state_init(child, parent, parent->pcihp_bridge_en); return child; } static void build_pci_bus_end(PCIBus *bus, void *bus_state) { AcpiBuildPciBusHotplugState *child = bus_state; AcpiBuildPciBusHotplugState *parent = child->parent; GArray *bus_table = build_alloc_array(); DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX); DECLARE_BITMAP(slot_device_present, PCI_SLOT_MAX); DECLARE_BITMAP(slot_device_system, PCI_SLOT_MAX); DECLARE_BITMAP(slot_device_vga, PCI_SLOT_MAX); DECLARE_BITMAP(slot_device_qxl, PCI_SLOT_MAX); uint8_t op; int i; QObject *bsel; GArray *method; bool bus_hotplug_support = false; /* * Skip bridge subtree creation if bridge hotplug is disabled * to make acpi tables compatible with legacy machine types. */ if (!child->pcihp_bridge_en && bus->parent_dev) { build_free_array(bus_table); build_pci_bus_state_cleanup(child); g_free(child); return; } if (bus->parent_dev) { op = 0x82; /* DeviceOp */ build_append_namestring(bus_table, "S%.02X", bus->parent_dev->devfn); build_append_byte(bus_table, 0x08); /* NameOp */ build_append_namestring(bus_table, "_SUN"); build_append_value(bus_table, PCI_SLOT(bus->parent_dev->devfn), 1); build_append_byte(bus_table, 0x08); /* NameOp */ build_append_namestring(bus_table, "_ADR"); build_append_value(bus_table, (PCI_SLOT(bus->parent_dev->devfn) << 16) | PCI_FUNC(bus->parent_dev->devfn), 4); } else { op = 0x10; /* ScopeOp */; build_append_namestring(bus_table, "PCI0"); } bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL); if (bsel) { build_append_byte(bus_table, 0x08); /* NameOp */ build_append_namestring(bus_table, "BSEL"); build_append_int(bus_table, qint_get_int(qobject_to_qint(bsel))); memset(slot_hotplug_enable, 0xff, sizeof slot_hotplug_enable); } else { /* No bsel - no slots are hot-pluggable */ memset(slot_hotplug_enable, 0x00, sizeof slot_hotplug_enable); } memset(slot_device_present, 0x00, sizeof slot_device_present); memset(slot_device_system, 0x00, sizeof slot_device_present); memset(slot_device_vga, 0x00, sizeof slot_device_vga); memset(slot_device_qxl, 0x00, sizeof slot_device_qxl); for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) { DeviceClass *dc; PCIDeviceClass *pc; PCIDevice *pdev = bus->devices[i]; int slot = PCI_SLOT(i); bool bridge_in_acpi; if (!pdev) { continue; } set_bit(slot, slot_device_present); pc = PCI_DEVICE_GET_CLASS(pdev); dc = DEVICE_GET_CLASS(pdev); /* When hotplug for bridges is enabled, bridges are * described in ACPI separately (see build_pci_bus_end). * In this case they aren't themselves hot-pluggable. */ bridge_in_acpi = pc->is_bridge && child->pcihp_bridge_en; if (pc->class_id == PCI_CLASS_BRIDGE_ISA || bridge_in_acpi) { set_bit(slot, slot_device_system); } if (pc->class_id == PCI_CLASS_DISPLAY_VGA) { set_bit(slot, slot_device_vga); if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) { set_bit(slot, slot_device_qxl); } } if (!dc->hotpluggable || bridge_in_acpi) { clear_bit(slot, slot_hotplug_enable); } } /* Append Device object for each slot */ for (i = 0; i < PCI_SLOT_MAX; i++) { bool can_eject = test_bit(i, slot_hotplug_enable); bool present = test_bit(i, slot_device_present); bool vga = test_bit(i, slot_device_vga); bool qxl = test_bit(i, slot_device_qxl); bool system = test_bit(i, slot_device_system); if (can_eject) { void *pcihp = acpi_data_push(bus_table, ACPI_PCIHP_SIZEOF); memcpy(pcihp, ACPI_PCIHP_AML, ACPI_PCIHP_SIZEOF); patch_pcihp(i, pcihp); bus_hotplug_support = true; } else if (qxl) { void *pcihp = acpi_data_push(bus_table, ACPI_PCIQXL_SIZEOF); memcpy(pcihp, ACPI_PCIQXL_AML, ACPI_PCIQXL_SIZEOF); patch_pciqxl(i, pcihp); } else if (vga) { void *pcihp = acpi_data_push(bus_table, ACPI_PCIVGA_SIZEOF); memcpy(pcihp, ACPI_PCIVGA_AML, ACPI_PCIVGA_SIZEOF); patch_pcivga(i, pcihp); } else if (system) { /* Nothing to do: system devices are in DSDT or in SSDT above. */ } else if (present) { void *pcihp = acpi_data_push(bus_table, ACPI_PCINOHP_SIZEOF); memcpy(pcihp, ACPI_PCINOHP_AML, ACPI_PCINOHP_SIZEOF); patch_pcinohp(i, pcihp); } } if (bsel) { method = build_alloc_method("DVNT", 2); for (i = 0; i < PCI_SLOT_MAX; i++) { GArray *notify; uint8_t op; if (!test_bit(i, slot_hotplug_enable)) { continue; } notify = build_alloc_array(); op = 0xA0; /* IfOp */ build_append_byte(notify, 0x7B); /* AndOp */ build_append_byte(notify, 0x68); /* Arg0Op */ build_append_int(notify, 0x1U << i); build_append_byte(notify, 0x00); /* NullName */ build_append_byte(notify, 0x86); /* NotifyOp */ build_append_namestring(notify, "S%.02X", PCI_DEVFN(i, 0)); build_append_byte(notify, 0x69); /* Arg1Op */ /* Pack it up */ build_package(notify, op); build_append_array(method, notify); build_free_array(notify); } build_append_and_cleanup_method(bus_table, method); } /* Append PCNT method to notify about events on local and child buses. * Add unconditionally for root since DSDT expects it. */ if (bus_hotplug_support || child->notify_table->len || !bus->parent_dev) { method = build_alloc_method("PCNT", 0); /* If bus supports hotplug select it and notify about local events */ if (bsel) { build_append_byte(method, 0x70); /* StoreOp */ build_append_int(method, qint_get_int(qobject_to_qint(bsel))); build_append_namestring(method, "BNUM"); build_append_namestring(method, "DVNT"); build_append_namestring(method, "PCIU"); build_append_int(method, 1); /* Device Check */ build_append_namestring(method, "DVNT"); build_append_namestring(method, "PCID"); build_append_int(method, 3); /* Eject Request */ } /* Notify about child bus events in any case */ build_append_array(method, child->notify_table); build_append_and_cleanup_method(bus_table, method); /* Append description of child buses */ build_append_array(bus_table, child->device_table); /* Pack it up */ if (bus->parent_dev) { build_extop_package(bus_table, op); } else { build_package(bus_table, op); } /* Append our bus description to parent table */ build_append_array(parent->device_table, bus_table); /* Also tell parent how to notify us, invoking PCNT method. * At the moment this is not needed for root as we have a single root. */ if (bus->parent_dev) { build_append_namestring(parent->notify_table, "^PCNT.S%.02X", bus->parent_dev->devfn); } } qobject_decref(bsel); build_free_array(bus_table); build_pci_bus_state_cleanup(child); g_free(child); } static void patch_pci_windows(PcPciInfo *pci, uint8_t *start, unsigned size) { ACPI_BUILD_SET_LE(start, size, acpi_pci32_start[0], 32, pci->w32.begin); ACPI_BUILD_SET_LE(start, size, acpi_pci32_end[0], 32, pci->w32.end - 1); if (pci->w64.end || pci->w64.begin) { ACPI_BUILD_SET_LE(start, size, acpi_pci64_valid[0], 8, 1); ACPI_BUILD_SET_LE(start, size, acpi_pci64_start[0], 64, pci->w64.begin); ACPI_BUILD_SET_LE(start, size, acpi_pci64_end[0], 64, pci->w64.end - 1); ACPI_BUILD_SET_LE(start, size, acpi_pci64_length[0], 64, pci->w64.end - pci->w64.begin); } else { ACPI_BUILD_SET_LE(start, size, acpi_pci64_valid[0], 8, 0); } } static void build_ssdt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu, AcpiPmInfo *pm, AcpiMiscInfo *misc, PcPciInfo *pci, PcGuestInfo *guest_info) { MachineState *machine = MACHINE(qdev_get_machine()); uint32_t nr_mem = machine->ram_slots; unsigned acpi_cpus = guest_info->apic_id_limit; int ssdt_start = table_data->len; uint8_t *ssdt_ptr; int i; /* The current AML generator can cover the APIC ID range [0..255], * inclusive, for VCPU hotplug. */ QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256); g_assert(acpi_cpus <= ACPI_CPU_HOTPLUG_ID_LIMIT); /* Copy header and patch values in the S3_ / S4_ / S5_ packages */ ssdt_ptr = acpi_data_push(table_data, sizeof(ssdp_misc_aml)); memcpy(ssdt_ptr, ssdp_misc_aml, sizeof(ssdp_misc_aml)); if (pm->s3_disabled) { ssdt_ptr[acpi_s3_name[0]] = 'X'; } if (pm->s4_disabled) { ssdt_ptr[acpi_s4_name[0]] = 'X'; } else { ssdt_ptr[acpi_s4_pkg[0] + 1] = ssdt_ptr[acpi_s4_pkg[0] + 3] = pm->s4_val; } patch_pci_windows(pci, ssdt_ptr, sizeof(ssdp_misc_aml)); ACPI_BUILD_SET_LE(ssdt_ptr, sizeof(ssdp_misc_aml), ssdt_isa_pest[0], 16, misc->pvpanic_port); ACPI_BUILD_SET_LE(ssdt_ptr, sizeof(ssdp_misc_aml), ssdt_mctrl_nr_slots[0], 32, nr_mem); { GArray *sb_scope = build_alloc_array(); uint8_t op = 0x10; /* ScopeOp */ build_append_namestring(sb_scope, "_SB"); /* build Processor object for each processor */ for (i = 0; i < acpi_cpus; i++) { uint8_t *proc = acpi_data_push(sb_scope, ACPI_PROC_SIZEOF); memcpy(proc, ACPI_PROC_AML, ACPI_PROC_SIZEOF); proc[ACPI_PROC_OFFSET_CPUHEX] = acpi_get_hex(i >> 4); proc[ACPI_PROC_OFFSET_CPUHEX+1] = acpi_get_hex(i); proc[ACPI_PROC_OFFSET_CPUID1] = i; proc[ACPI_PROC_OFFSET_CPUID2] = i; } /* build this code: * Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...} */ /* Arg0 = Processor ID = APIC ID */ build_append_notify_method(sb_scope, "NTFY", "CP%0.02X", acpi_cpus); /* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })" */ build_append_byte(sb_scope, 0x08); /* NameOp */ build_append_namestring(sb_scope, "CPON"); { GArray *package = build_alloc_array(); uint8_t op; /* * Note: The ability to create variable-sized packages was first introduced in ACPI 2.0. ACPI 1.0 only * allowed fixed-size packages with up to 255 elements. * Windows guests up to win2k8 fail when VarPackageOp is used. */ if (acpi_cpus <= 255) { op = 0x12; /* PackageOp */ build_append_byte(package, acpi_cpus); /* NumElements */ } else { op = 0x13; /* VarPackageOp */ build_append_int(package, acpi_cpus); /* VarNumElements */ } for (i = 0; i < acpi_cpus; i++) { uint8_t b = test_bit(i, cpu->found_cpus) ? 0x01 : 0x00; build_append_byte(package, b); } build_package(package, op); build_append_array(sb_scope, package); build_free_array(package); } if (nr_mem) { assert(nr_mem <= ACPI_MAX_RAM_SLOTS); /* build memory devices */ for (i = 0; i < nr_mem; i++) { char id[3]; uint8_t *mem = acpi_data_push(sb_scope, ACPI_MEM_SIZEOF); snprintf(id, sizeof(id), "%02X", i); memcpy(mem, ACPI_MEM_AML, ACPI_MEM_SIZEOF); memcpy(mem + ACPI_MEM_OFFSET_HEX, id, 2); memcpy(mem + ACPI_MEM_OFFSET_ID, id, 2); } /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) { * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... */ build_append_notify_method(sb_scope, stringify(MEMORY_SLOT_NOTIFY_METHOD), "MP%0.02X", nr_mem); } { AcpiBuildPciBusHotplugState hotplug_state; Object *pci_host; PCIBus *bus = NULL; bool ambiguous; pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous); if (!ambiguous && pci_host) { bus = PCI_HOST_BRIDGE(pci_host)->bus; } build_pci_bus_state_init(&hotplug_state, NULL, pm->pcihp_bridge_en); if (bus) { /* Scan all PCI buses. Generate tables to support hotplug. */ pci_for_each_bus_depth_first(bus, build_pci_bus_begin, build_pci_bus_end, &hotplug_state); } build_append_array(sb_scope, hotplug_state.device_table); build_pci_bus_state_cleanup(&hotplug_state); } build_package(sb_scope, op); build_append_array(table_data, sb_scope); build_free_array(sb_scope); } build_header(linker, table_data, (void *)(table_data->data + ssdt_start), "SSDT", table_data->len - ssdt_start, 1); } static void build_hpet(GArray *table_data, GArray *linker) { Acpi20Hpet *hpet; hpet = acpi_data_push(table_data, sizeof(*hpet)); /* Note timer_block_id value must be kept in sync with value advertised by * emulated hpet */ hpet->timer_block_id = cpu_to_le32(0x8086a201); hpet->addr.address = cpu_to_le64(HPET_BASE); build_header(linker, table_data, (void *)hpet, "HPET", sizeof(*hpet), 1); } static void build_tpm_tcpa(GArray *table_data, GArray *linker, GArray *tcpalog) { Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa); uint64_t log_area_start_address = acpi_data_len(tcpalog); tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT); tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE); tcpa->log_area_start_address = cpu_to_le64(log_area_start_address); bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, 1, false /* high memory */); /* log area start address to be filled by Guest linker */ bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, ACPI_BUILD_TPMLOG_FILE, table_data, &tcpa->log_area_start_address, sizeof(tcpa->log_area_start_address)); build_header(linker, table_data, (void *)tcpa, "TCPA", sizeof(*tcpa), 2); acpi_data_push(tcpalog, TPM_LOG_AREA_MINIMUM_SIZE); } static void build_tpm_ssdt(GArray *table_data, GArray *linker) { void *tpm_ptr; tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm_aml)); memcpy(tpm_ptr, ssdt_tpm_aml, sizeof(ssdt_tpm_aml)); } typedef enum { MEM_AFFINITY_NOFLAGS = 0, MEM_AFFINITY_ENABLED = (1 << 0), MEM_AFFINITY_HOTPLUGGABLE = (1 << 1), MEM_AFFINITY_NON_VOLATILE = (1 << 2), } MemoryAffinityFlags; static void acpi_build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base, uint64_t len, int node, MemoryAffinityFlags flags) { numamem->type = ACPI_SRAT_MEMORY; numamem->length = sizeof(*numamem); memset(numamem->proximity, 0, 4); numamem->proximity[0] = node; numamem->flags = cpu_to_le32(flags); numamem->base_addr = cpu_to_le64(base); numamem->range_length = cpu_to_le64(len); } static void build_srat(GArray *table_data, GArray *linker, PcGuestInfo *guest_info) { AcpiSystemResourceAffinityTable *srat; AcpiSratProcessorAffinity *core; AcpiSratMemoryAffinity *numamem; int i; uint64_t curnode; int srat_start, numa_start, slots; uint64_t mem_len, mem_base, next_base; PCMachineState *pcms = PC_MACHINE(qdev_get_machine()); ram_addr_t hotplugabble_address_space_size = object_property_get_int(OBJECT(pcms), PC_MACHINE_MEMHP_REGION_SIZE, NULL); srat_start = table_data->len; srat = acpi_data_push(table_data, sizeof *srat); srat->reserved1 = cpu_to_le32(1); core = (void *)(srat + 1); for (i = 0; i < guest_info->apic_id_limit; ++i) { core = acpi_data_push(table_data, sizeof *core); core->type = ACPI_SRAT_PROCESSOR; core->length = sizeof(*core); core->local_apic_id = i; curnode = guest_info->node_cpu[i]; core->proximity_lo = curnode; memset(core->proximity_hi, 0, 3); core->local_sapic_eid = 0; core->flags = cpu_to_le32(1); } /* 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_start = table_data->len; numamem = acpi_data_push(table_data, sizeof *numamem); acpi_build_srat_memory(numamem, 0, 640*1024, 0, MEM_AFFINITY_ENABLED); next_base = 1024 * 1024; for (i = 1; i < guest_info->numa_nodes + 1; ++i) { mem_base = next_base; mem_len = guest_info->node_mem[i - 1]; if (i == 1) { mem_len -= 1024 * 1024; } next_base = mem_base + mem_len; /* Cut out the ACPI_PCI hole */ if (mem_base <= guest_info->ram_size_below_4g && next_base > guest_info->ram_size_below_4g) { mem_len -= next_base - guest_info->ram_size_below_4g; if (mem_len > 0) { numamem = acpi_data_push(table_data, sizeof *numamem); acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1, MEM_AFFINITY_ENABLED); } mem_base = 1ULL << 32; mem_len = next_base - guest_info->ram_size_below_4g; next_base += (1ULL << 32) - guest_info->ram_size_below_4g; } numamem = acpi_data_push(table_data, sizeof *numamem); acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1, MEM_AFFINITY_ENABLED); } slots = (table_data->len - numa_start) / sizeof *numamem; for (; slots < guest_info->numa_nodes + 2; slots++) { numamem = acpi_data_push(table_data, sizeof *numamem); acpi_build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS); } /* * Entry is required for Windows to enable memory hotplug in OS. * Memory devices may override proximity set by this entry, * providing _PXM method if necessary. */ if (hotplugabble_address_space_size) { numamem = acpi_data_push(table_data, sizeof *numamem); acpi_build_srat_memory(numamem, pcms->hotplug_memory_base, hotplugabble_address_space_size, 0, MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); } build_header(linker, table_data, (void *)(table_data->data + srat_start), "SRAT", table_data->len - srat_start, 1); } static void build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info) { AcpiTableMcfg *mcfg; const char *sig; int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]); mcfg = acpi_data_push(table_data, len); mcfg->allocation[0].address = cpu_to_le64(info->mcfg_base); /* Only a single allocation so no need to play with segments */ mcfg->allocation[0].pci_segment = cpu_to_le16(0); mcfg->allocation[0].start_bus_number = 0; mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->mcfg_size - 1); /* MCFG is used for ECAM which can be enabled or disabled by guest. * To avoid table size changes (which create migration issues), * always create the table even if there are no allocations, * but set the signature to a reserved value in this case. * ACPI spec requires OSPMs to ignore such tables. */ if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) { /* Reserved signature: ignored by OSPM */ sig = "QEMU"; } else { sig = "MCFG"; } build_header(linker, table_data, (void *)mcfg, sig, len, 1); } static void build_dmar_q35(GArray *table_data, GArray *linker) { int dmar_start = table_data->len; AcpiTableDmar *dmar; AcpiDmarHardwareUnit *drhd; dmar = acpi_data_push(table_data, sizeof(*dmar)); dmar->host_address_width = VTD_HOST_ADDRESS_WIDTH - 1; dmar->flags = 0; /* No intr_remap for now */ /* DMAR Remapping Hardware Unit Definition structure */ drhd = acpi_data_push(table_data, sizeof(*drhd)); drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT); drhd->length = cpu_to_le16(sizeof(*drhd)); /* No device scope now */ drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL; drhd->pci_segment = cpu_to_le16(0); drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR); build_header(linker, table_data, (void *)(table_data->data + dmar_start), "DMAR", table_data->len - dmar_start, 1); } static void build_dsdt(GArray *table_data, GArray *linker, AcpiMiscInfo *misc) { AcpiTableHeader *dsdt; assert(misc->dsdt_code && misc->dsdt_size); dsdt = acpi_data_push(table_data, misc->dsdt_size); memcpy(dsdt, misc->dsdt_code, misc->dsdt_size); memset(dsdt, 0, sizeof *dsdt); build_header(linker, table_data, dsdt, "DSDT", misc->dsdt_size, 1); } /* Build final rsdt table */ static void build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets) { AcpiRsdtDescriptorRev1 *rsdt; size_t rsdt_len; int i; rsdt_len = sizeof(*rsdt) + sizeof(uint32_t) * table_offsets->len; rsdt = acpi_data_push(table_data, rsdt_len); memcpy(rsdt->table_offset_entry, table_offsets->data, sizeof(uint32_t) * table_offsets->len); for (i = 0; i < table_offsets->len; ++i) { /* rsdt->table_offset_entry to be filled by Guest linker */ bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, ACPI_BUILD_TABLE_FILE, table_data, &rsdt->table_offset_entry[i], sizeof(uint32_t)); } build_header(linker, table_data, (void *)rsdt, "RSDT", rsdt_len, 1); } static GArray * build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt) { AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp); bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 16, true /* fseg memory */); memcpy(&rsdp->signature, "RSD PTR ", 8); memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6); rsdp->rsdt_physical_address = cpu_to_le32(rsdt); /* Address to be filled by Guest linker */ bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE, ACPI_BUILD_TABLE_FILE, rsdp_table, &rsdp->rsdt_physical_address, sizeof rsdp->rsdt_physical_address); rsdp->checksum = 0; /* Checksum to be filled by Guest linker */ bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE, rsdp, rsdp, sizeof *rsdp, &rsdp->checksum); return rsdp_table; } typedef struct AcpiBuildTables { GArray *table_data; GArray *rsdp; GArray *tcpalog; GArray *linker; } AcpiBuildTables; static inline void acpi_build_tables_init(AcpiBuildTables *tables) { tables->rsdp = g_array_new(false, true /* clear */, 1); tables->table_data = g_array_new(false, true /* clear */, 1); tables->tcpalog = g_array_new(false, true /* clear */, 1); tables->linker = bios_linker_loader_init(); } static inline void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre) { void *linker_data = bios_linker_loader_cleanup(tables->linker); g_free(linker_data); g_array_free(tables->rsdp, mfre); g_array_free(tables->table_data, true); g_array_free(tables->tcpalog, mfre); } typedef struct AcpiBuildState { /* Copy of table in RAM (for patching). */ ram_addr_t table_ram; uint32_t table_size; /* Is table patched? */ uint8_t patched; PcGuestInfo *guest_info; } AcpiBuildState; static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg) { Object *pci_host; QObject *o; bool ambiguous; pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous); g_assert(!ambiguous); g_assert(pci_host); o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL); if (!o) { return false; } mcfg->mcfg_base = qint_get_int(qobject_to_qint(o)); qobject_decref(o); o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL); assert(o); mcfg->mcfg_size = qint_get_int(qobject_to_qint(o)); qobject_decref(o); return true; } static bool acpi_has_iommu(void) { bool ambiguous; Object *intel_iommu; intel_iommu = object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE, &ambiguous); return intel_iommu && !ambiguous; } static void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables) { GArray *table_offsets; unsigned facs, ssdt, dsdt, rsdt; AcpiCpuInfo cpu; AcpiPmInfo pm; AcpiMiscInfo misc; AcpiMcfgInfo mcfg; PcPciInfo pci; uint8_t *u; size_t aml_len = 0; acpi_get_cpu_info(&cpu); acpi_get_pm_info(&pm); acpi_get_dsdt(&misc); acpi_get_misc_info(&misc); acpi_get_pci_info(&pci); 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, 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->table_data->len; build_facs(tables->table_data, tables->linker, guest_info); /* DSDT is pointed to by FADT */ dsdt = tables->table_data->len; build_dsdt(tables->table_data, tables->linker, &misc); /* Count the size of the DSDT and SSDT, we will need it for legacy * sizing of ACPI tables. */ aml_len += tables->table_data->len - dsdt; /* ACPI tables pointed to by RSDT */ acpi_add_table(table_offsets, tables->table_data); build_fadt(tables->table_data, tables->linker, &pm, facs, dsdt); ssdt = tables->table_data->len; acpi_add_table(table_offsets, tables->table_data); build_ssdt(tables->table_data, tables->linker, &cpu, &pm, &misc, &pci, guest_info); aml_len += tables->table_data->len - ssdt; acpi_add_table(table_offsets, tables->table_data); build_madt(tables->table_data, tables->linker, &cpu, guest_info); if (misc.has_hpet) { acpi_add_table(table_offsets, tables->table_data); build_hpet(tables->table_data, tables->linker); } if (misc.has_tpm) { acpi_add_table(table_offsets, tables->table_data); build_tpm_tcpa(tables->table_data, tables->linker, tables->tcpalog); acpi_add_table(table_offsets, tables->table_data); build_tpm_ssdt(tables->table_data, tables->linker); } if (guest_info->numa_nodes) { acpi_add_table(table_offsets, tables->table_data); build_srat(tables->table_data, tables->linker, guest_info); } if (acpi_get_mcfg(&mcfg)) { acpi_add_table(table_offsets, tables->table_data); build_mcfg_q35(tables->table_data, tables->linker, &mcfg); } if (acpi_has_iommu()) { acpi_add_table(table_offsets, tables->table_data); build_dmar_q35(tables->table_data, tables->linker); } /* 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->table_data); g_array_append_vals(tables->table_data, u, len); } /* RSDT is pointed to by RSDP */ rsdt = tables->table_data->len; build_rsdt(tables->table_data, tables->linker, table_offsets); /* RSDP is in FSEG memory, so allocate it separately */ build_rsdp(tables->rsdp, tables->linker, rsdt); /* We'll expose it all to Guest so we want to reduce * chance of size changes. * RSDP is small so it's easy to keep it immutable, no need to * bother with alignment. * * 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. So the table size is always 64k for pc-i440fx-2.1 * and we give an error if the table grows beyond that limit. * * We still have the problem of migrating from "-M pc-i440fx-2.0". For * that, we exploit the fact that QEMU 2.1 generates _smaller_ tables * than 2.0 and we can always pad the smaller tables with zeros. We can * then use the exact size of the 2.0 tables. * * All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration. */ if (guest_info->legacy_acpi_table_size) { /* Subtracting aml_len gives the size of fixed tables. Then add the * size of the PIIX4 DSDT/SSDT in QEMU 2.0. */ int legacy_aml_len = guest_info->legacy_acpi_table_size + ACPI_BUILD_LEGACY_CPU_AML_SIZE * max_cpus; int legacy_table_size = ROUND_UP(tables->table_data->len - aml_len + legacy_aml_len, ACPI_BUILD_ALIGN_SIZE); if (tables->table_data->len > legacy_table_size) { /* Should happen only with PCI bridges and -M pc-i440fx-2.0. */ error_report("Warning: migration may not work."); } g_array_set_size(tables->table_data, legacy_table_size); } else { /* Make sure we have a buffer in case we need to resize the tables. */ if (tables->table_data->len > ACPI_BUILD_TABLE_SIZE / 2) { /* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */ error_report("Warning: ACPI tables are larger than 64k."); error_report("Warning: migration may not work."); error_report("Warning: please remove CPUs, NUMA nodes, " "memory slots or PCI bridges."); } acpi_align_size(tables->table_data, ACPI_BUILD_TABLE_SIZE); } acpi_align_size(tables->linker, ACPI_BUILD_ALIGN_SIZE); /* Cleanup memory that's no longer used. */ g_array_free(table_offsets, true); } static void acpi_build_update(void *build_opaque, uint32_t offset) { 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(build_state->guest_info, &tables); assert(acpi_data_len(tables.table_data) == build_state->table_size); /* Make sure RAM size is correct - in case it got changed by migration */ qemu_ram_resize(build_state->table_ram, build_state->table_size, &error_abort); memcpy(qemu_get_ram_ptr(build_state->table_ram), tables.table_data->data, build_state->table_size); cpu_physical_memory_set_dirty_range_nocode(build_state->table_ram, build_state->table_size); acpi_build_tables_cleanup(&tables, true); } static void acpi_build_reset(void *build_opaque) { AcpiBuildState *build_state = build_opaque; build_state->patched = 0; } static ram_addr_t acpi_add_rom_blob(AcpiBuildState *build_state, GArray *blob, const char *name, uint64_t max_size) { return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1, name, acpi_build_update, build_state); } static const VMStateDescription vmstate_acpi_build = { .name = "acpi_build", .version_id = 1, .minimum_version_id = 1, .fields = (VMStateField[]) { VMSTATE_UINT8(patched, AcpiBuildState), VMSTATE_END_OF_LIST() }, }; void acpi_setup(PcGuestInfo *guest_info) { AcpiBuildTables tables; AcpiBuildState *build_state; if (!guest_info->fw_cfg) { ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n"); return; } if (!guest_info->has_acpi_build) { ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n"); return; } if (!acpi_enabled) { ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n"); return; } build_state = g_malloc0(sizeof *build_state); build_state->guest_info = guest_info; acpi_set_pci_info(); acpi_build_tables_init(&tables); acpi_build(build_state->guest_info, &tables); /* Now expose it all to Guest */ build_state->table_ram = acpi_add_rom_blob(build_state, tables.table_data, ACPI_BUILD_TABLE_FILE, ACPI_BUILD_TABLE_MAX_SIZE); assert(build_state->table_ram != RAM_ADDR_MAX); build_state->table_size = acpi_data_len(tables.table_data); acpi_add_rom_blob(NULL, tables.linker, "etc/table-loader", 0); fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data, acpi_data_len(tables.tcpalog)); /* * RSDP is small so it's easy to keep it immutable, no need to * bother with ROM blobs. */ fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_RSDP_FILE, tables.rsdp->data, acpi_data_len(tables.rsdp)); 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); }