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Diffstat (limited to 'hw/i386/acpi-common.c')
| -rw-r--r-- | hw/i386/acpi-common.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/hw/i386/acpi-common.c b/hw/i386/acpi-common.c new file mode 100644 index 000000000..4aaafbdd7 --- /dev/null +++ b/hw/i386/acpi-common.c @@ -0,0 +1,165 @@ +/* Support for generating ACPI tables and passing them to Guests + * + * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net> + * Copyright (C) 2006 Fabrice Bellard + * Copyright (C) 2013 Red Hat Inc + * + * Author: Michael S. Tsirkin <mst@redhat.com> + * + * 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 <http://www.gnu.org/licenses/>. + */ + +#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; + /* Flags – Local APIC Flags */ + uint32_t flags = apic_ids->cpus[uid].cpu != NULL || force_enabled ? + 1 /* Enabled */ : 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) { + /* Rev 1.0b, Table 5-13 Processor Local APIC Structure */ + build_append_int_noprefix(entry, 0, 1); /* Type */ + build_append_int_noprefix(entry, 8, 1); /* Length */ + build_append_int_noprefix(entry, uid, 1); /* ACPI Processor ID */ + build_append_int_noprefix(entry, apic_id, 1); /* APIC ID */ + build_append_int_noprefix(entry, flags, 4); /* Flags */ + } else { + /* Rev 4.0, 5.2.12.12 Processor Local x2APIC Structure */ + build_append_int_noprefix(entry, 9, 1); /* Type */ + build_append_int_noprefix(entry, 16, 1); /* Length */ + build_append_int_noprefix(entry, 0, 2); /* Reserved */ + build_append_int_noprefix(entry, apic_id, 4); /* X2APIC ID */ + build_append_int_noprefix(entry, flags, 4); /* Flags */ + build_append_int_noprefix(entry, uid, 4); /* ACPI Processor UID */ + } +} + +static void build_ioapic(GArray *entry, uint8_t id, uint32_t addr, uint32_t irq) +{ + /* Rev 1.0b, 5.2.8.2 IO APIC */ + build_append_int_noprefix(entry, 1, 1); /* Type */ + build_append_int_noprefix(entry, 12, 1); /* Length */ + build_append_int_noprefix(entry, id, 1); /* IO APIC ID */ + build_append_int_noprefix(entry, 0, 1); /* Reserved */ + build_append_int_noprefix(entry, addr, 4); /* IO APIC Address */ + build_append_int_noprefix(entry, irq, 4); /* System Vector Base */ +} + +static void +build_xrupt_override(GArray *entry, uint8_t src, uint32_t gsi, uint16_t flags) +{ + /* Rev 1.0b, 5.2.8.3.1 Interrupt Source Overrides */ + build_append_int_noprefix(entry, 2, 1); /* Type */ + build_append_int_noprefix(entry, 10, 1); /* Length */ + build_append_int_noprefix(entry, 0, 1); /* Bus */ + build_append_int_noprefix(entry, src, 1); /* Source */ + /* Global System Interrupt Vector */ + build_append_int_noprefix(entry, gsi, 4); + build_append_int_noprefix(entry, flags, 2); /* 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) +{ + int i; + bool x2apic_mode = false; + 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); + 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; + } + } + + build_ioapic(table_data, ACPI_BUILD_IOAPIC_ID, IO_APIC_DEFAULT_ADDRESS, 0); + if (x86ms->ioapic2) { + build_ioapic(table_data, ACPI_BUILD_IOAPIC_ID + 1, + IO_APIC_SECONDARY_ADDRESS, IO_APIC_SECONDARY_IRQBASE); + } + + if (x86ms->apic_xrupt_override) { + build_xrupt_override(table_data, 0, 2, + 0 /* Flags: Conforms to the specifications of the bus */); + } + + for (i = 1; i < 16; i++) { + if (!(x86ms->pci_irq_mask & (1 << i))) { + /* No need for a INT source override structure. */ + continue; + } + build_xrupt_override(table_data, i, i, + 0xd /* Flags: Active high, Level Triggered */); + } + + if (x2apic_mode) { + /* Rev 4.0, 5.2.12.13 Local x2APIC NMI Structure*/ + build_append_int_noprefix(table_data, 0xA, 1); /* Type */ + build_append_int_noprefix(table_data, 12, 1); /* Length */ + build_append_int_noprefix(table_data, 0, 2); /* Flags */ + /* ACPI Processor UID */ + build_append_int_noprefix(table_data, 0xFFFFFFFF /* all processors */, + 4); + /* Local x2APIC LINT# */ + build_append_int_noprefix(table_data, 1 /* ACPI_LINT1 */, 1); + build_append_int_noprefix(table_data, 0, 3); /* Reserved */ + } else { + /* Rev 1.0b, 5.2.8.3.3 Local APIC NMI */ + build_append_int_noprefix(table_data, 4, 1); /* Type */ + build_append_int_noprefix(table_data, 6, 1); /* Length */ + /* ACPI Processor ID */ + build_append_int_noprefix(table_data, 0xFF /* all processors */, 1); + build_append_int_noprefix(table_data, 0, 2); /* Flags */ + /* Local APIC INTI# */ + build_append_int_noprefix(table_data, 1 /* ACPI_LINT1 */, 1); + } + + acpi_table_end(linker, &table); +} + |