| /* 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); |
| } |
| |
