/* 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 "exec/memory.h" #include "hw/acpi/acpi.h" #include "hw/acpi/aml-build.h" #include "hw/acpi/utils.h" #include "hw/i386/pc.h" #include "target/i386/cpu.h" #include "acpi-build.h" #include "acpi-common.h" void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid, const CPUArchIdList *apic_ids, GArray *entry, bool force_enabled) { uint32_t apic_id = apic_ids->cpus[uid].arch_id; uint32_t flags = apic_ids->cpus[uid].cpu != NULL || force_enabled ? 1 : 0; /* ACPI spec says that LAPIC entry for non present * CPU may be omitted from MADT or it must be marked * as disabled. However omitting non present CPU from * MADT breaks hotplug on linux. So possible CPUs * should be put in MADT but kept disabled. */ if (apic_id < 255) { AcpiMadtProcessorApic *apic = acpi_data_push(entry, sizeof *apic); apic->type = ACPI_APIC_PROCESSOR; apic->length = sizeof(*apic); apic->processor_id = uid; apic->local_apic_id = apic_id; apic->flags = cpu_to_le32(flags); } else { AcpiMadtProcessorX2Apic *apic = acpi_data_push(entry, sizeof *apic); apic->type = ACPI_APIC_LOCAL_X2APIC; apic->length = sizeof(*apic); apic->uid = cpu_to_le32(uid); apic->x2apic_id = cpu_to_le32(apic_id); apic->flags = cpu_to_le32(flags); } } /* * ACPI spec, Revision 1.0b * 5.2.8 Multiple APIC Description Table */ void acpi_build_madt(GArray *table_data, BIOSLinker *linker, X86MachineState *x86ms, AcpiDeviceIf *adev, const char *oem_id, const char *oem_table_id) { MachineClass *mc = MACHINE_GET_CLASS(x86ms); const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(x86ms)); AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(adev); bool x2apic_mode = false; AcpiMadtIoApic *io_apic; AcpiMadtIntsrcovr *intsrcovr; int i; AcpiTable table = { .sig = "APIC", .rev = 1, .oem_id = oem_id, .oem_table_id = oem_table_id }; acpi_table_begin(&table, table_data); /* Local APIC Address */ build_append_int_noprefix(table_data, APIC_DEFAULT_ADDRESS, 4); build_append_int_noprefix(table_data, 1 /* PCAT_COMPAT */, 4); /* Flags */ for (i = 0; i < apic_ids->len; i++) { adevc->madt_cpu(adev, i, apic_ids, table_data, false); if (apic_ids->cpus[i].arch_id > 254) { x2apic_mode = true; } } io_apic = acpi_data_push(table_data, sizeof *io_apic); io_apic->type = ACPI_APIC_IO; io_apic->length = sizeof(*io_apic); 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 (x86ms->ioapic2) { AcpiMadtIoApic *io_apic2; io_apic2 = acpi_data_push(table_data, sizeof *io_apic); io_apic2->type = ACPI_APIC_IO; io_apic2->length = sizeof(*io_apic); io_apic2->io_apic_id = ACPI_BUILD_IOAPIC_ID + 1; io_apic2->address = cpu_to_le32(IO_APIC_SECONDARY_ADDRESS); io_apic2->interrupt = cpu_to_le32(IO_APIC_SECONDARY_IRQBASE); } if (x86ms->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++) { if (!(x86ms->pci_irq_mask & (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 */ } if (x2apic_mode) { AcpiMadtLocalX2ApicNmi *local_nmi; local_nmi = acpi_data_push(table_data, sizeof *local_nmi); local_nmi->type = ACPI_APIC_LOCAL_X2APIC_NMI; local_nmi->length = sizeof(*local_nmi); local_nmi->uid = 0xFFFFFFFF; /* all processors */ local_nmi->flags = cpu_to_le16(0); local_nmi->lint = 1; /* ACPI_LINT1 */ } else { AcpiMadtLocalNmi *local_nmi; 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 */ } acpi_table_end(linker, &table); }