Yaya48
cf256aa081
Upstream: https://gitlab.com/qemu-project/qemu.git Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475
166 lines
6.5 KiB
C
166 lines
6.5 KiB
C
/* Support for generating ACPI tables and passing them to Guests
|
||
*
|
||
* Copyright (C) 2008-2010 Kevin O'Connor <[email protected]>
|
||
* Copyright (C) 2006 Fabrice Bellard
|
||
* Copyright (C) 2013 Red Hat Inc
|
||
*
|
||
* Author: Michael S. Tsirkin <[email protected]>
|
||
*
|
||
* 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 "system/memory.h"
|
||
#include "hw/acpi/acpi.h"
|
||
#include "hw/acpi/aml-build.h"
|
||
#include "hw/acpi/utils.h"
|
||
#include "target/i386/cpu.h"
|
||
|
||
#include "acpi-build.h"
|
||
#include "acpi-common.h"
|
||
|
||
void pc_madt_cpu_entry(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,
|
||
const char *oem_id, const char *oem_table_id)
|
||
{
|
||
int i;
|
||
bool x2apic_mode = false;
|
||
MachineClass *mc = MACHINE_GET_CLASS(x86ms);
|
||
X86MachineClass *x86mc = X86_MACHINE_GET_CLASS(x86ms);
|
||
const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(x86ms));
|
||
AcpiTable table = { .sig = "APIC", .rev = 3, .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);
|
||
/* Flags. bit 0: PCAT_COMPAT */
|
||
build_append_int_noprefix(table_data,
|
||
x86ms->pic != ON_OFF_AUTO_OFF ? 1 : 0 , 4);
|
||
|
||
for (i = 0; i < apic_ids->len; i++) {
|
||
pc_madt_cpu_entry(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 (x86mc->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);
|
||
}
|
||
|