meson: convert hw/9pfs, cleanup
[qemu.git] / hw / i386 / acpi-common.c
1 /* Support for generating ACPI tables and passing them to Guests
2 *
3 * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
4 * Copyright (C) 2006 Fabrice Bellard
5 * Copyright (C) 2013 Red Hat Inc
6 *
7 * Author: Michael S. Tsirkin <mst@redhat.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include "qemu/osdep.h"
24 #include "qapi/error.h"
25
26 #include "exec/memory.h"
27 #include "hw/acpi/acpi.h"
28 #include "hw/acpi/aml-build.h"
29 #include "hw/acpi/utils.h"
30 #include "hw/i386/pc.h"
31 #include "target/i386/cpu.h"
32
33 #include "acpi-build.h"
34 #include "acpi-common.h"
35
36 void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
37 const CPUArchIdList *apic_ids, GArray *entry)
38 {
39 uint32_t apic_id = apic_ids->cpus[uid].arch_id;
40
41 /* ACPI spec says that LAPIC entry for non present
42 * CPU may be omitted from MADT or it must be marked
43 * as disabled. However omitting non present CPU from
44 * MADT breaks hotplug on linux. So possible CPUs
45 * should be put in MADT but kept disabled.
46 */
47 if (apic_id < 255) {
48 AcpiMadtProcessorApic *apic = acpi_data_push(entry, sizeof *apic);
49
50 apic->type = ACPI_APIC_PROCESSOR;
51 apic->length = sizeof(*apic);
52 apic->processor_id = uid;
53 apic->local_apic_id = apic_id;
54 if (apic_ids->cpus[uid].cpu != NULL) {
55 apic->flags = cpu_to_le32(1);
56 } else {
57 apic->flags = cpu_to_le32(0);
58 }
59 } else {
60 AcpiMadtProcessorX2Apic *apic = acpi_data_push(entry, sizeof *apic);
61
62 apic->type = ACPI_APIC_LOCAL_X2APIC;
63 apic->length = sizeof(*apic);
64 apic->uid = cpu_to_le32(uid);
65 apic->x2apic_id = cpu_to_le32(apic_id);
66 if (apic_ids->cpus[uid].cpu != NULL) {
67 apic->flags = cpu_to_le32(1);
68 } else {
69 apic->flags = cpu_to_le32(0);
70 }
71 }
72 }
73
74 void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
75 X86MachineState *x86ms, AcpiDeviceIf *adev,
76 bool has_pci)
77 {
78 MachineClass *mc = MACHINE_GET_CLASS(x86ms);
79 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(x86ms));
80 int madt_start = table_data->len;
81 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(adev);
82 bool x2apic_mode = false;
83
84 AcpiMultipleApicTable *madt;
85 AcpiMadtIoApic *io_apic;
86 AcpiMadtIntsrcovr *intsrcovr;
87 int i;
88
89 madt = acpi_data_push(table_data, sizeof *madt);
90 madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS);
91 madt->flags = cpu_to_le32(1);
92
93 for (i = 0; i < apic_ids->len; i++) {
94 adevc->madt_cpu(adev, i, apic_ids, table_data);
95 if (apic_ids->cpus[i].arch_id > 254) {
96 x2apic_mode = true;
97 }
98 }
99
100 io_apic = acpi_data_push(table_data, sizeof *io_apic);
101 io_apic->type = ACPI_APIC_IO;
102 io_apic->length = sizeof(*io_apic);
103 io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID;
104 io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS);
105 io_apic->interrupt = cpu_to_le32(0);
106
107 if (x86ms->apic_xrupt_override) {
108 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
109 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
110 intsrcovr->length = sizeof(*intsrcovr);
111 intsrcovr->source = 0;
112 intsrcovr->gsi = cpu_to_le32(2);
113 intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */
114 }
115
116 if (has_pci) {
117 for (i = 1; i < 16; i++) {
118 #define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11))
119 if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) {
120 /* No need for a INT source override structure. */
121 continue;
122 }
123 intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
124 intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
125 intsrcovr->length = sizeof(*intsrcovr);
126 intsrcovr->source = i;
127 intsrcovr->gsi = cpu_to_le32(i);
128 intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */
129 }
130 }
131
132 if (x2apic_mode) {
133 AcpiMadtLocalX2ApicNmi *local_nmi;
134
135 local_nmi = acpi_data_push(table_data, sizeof *local_nmi);
136 local_nmi->type = ACPI_APIC_LOCAL_X2APIC_NMI;
137 local_nmi->length = sizeof(*local_nmi);
138 local_nmi->uid = 0xFFFFFFFF; /* all processors */
139 local_nmi->flags = cpu_to_le16(0);
140 local_nmi->lint = 1; /* ACPI_LINT1 */
141 } else {
142 AcpiMadtLocalNmi *local_nmi;
143
144 local_nmi = acpi_data_push(table_data, sizeof *local_nmi);
145 local_nmi->type = ACPI_APIC_LOCAL_NMI;
146 local_nmi->length = sizeof(*local_nmi);
147 local_nmi->processor_id = 0xff; /* all processors */
148 local_nmi->flags = cpu_to_le16(0);
149 local_nmi->lint = 1; /* ACPI_LINT1 */
150 }
151
152 build_header(linker, table_data,
153 (void *)(table_data->data + madt_start), "APIC",
154 table_data->len - madt_start, 1, NULL, NULL);
155 }
156