Fix version for v6.2.0-rc2 release
[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 bool force_enabled)
39 {
40 uint32_t apic_id = apic_ids->cpus[uid].arch_id;
41 /* Flags – Local APIC Flags */
42 uint32_t flags = apic_ids->cpus[uid].cpu != NULL || force_enabled ?
43 1 /* Enabled */ : 0;
44
45 /* ACPI spec says that LAPIC entry for non present
46 * CPU may be omitted from MADT or it must be marked
47 * as disabled. However omitting non present CPU from
48 * MADT breaks hotplug on linux. So possible CPUs
49 * should be put in MADT but kept disabled.
50 */
51 if (apic_id < 255) {
52 /* Rev 1.0b, Table 5-13 Processor Local APIC Structure */
53 build_append_int_noprefix(entry, 0, 1); /* Type */
54 build_append_int_noprefix(entry, 8, 1); /* Length */
55 build_append_int_noprefix(entry, uid, 1); /* ACPI Processor ID */
56 build_append_int_noprefix(entry, apic_id, 1); /* APIC ID */
57 build_append_int_noprefix(entry, flags, 4); /* Flags */
58 } else {
59 /* Rev 4.0, 5.2.12.12 Processor Local x2APIC Structure */
60 build_append_int_noprefix(entry, 9, 1); /* Type */
61 build_append_int_noprefix(entry, 16, 1); /* Length */
62 build_append_int_noprefix(entry, 0, 2); /* Reserved */
63 build_append_int_noprefix(entry, apic_id, 4); /* X2APIC ID */
64 build_append_int_noprefix(entry, flags, 4); /* Flags */
65 build_append_int_noprefix(entry, uid, 4); /* ACPI Processor UID */
66 }
67 }
68
69 static void build_ioapic(GArray *entry, uint8_t id, uint32_t addr, uint32_t irq)
70 {
71 /* Rev 1.0b, 5.2.8.2 IO APIC */
72 build_append_int_noprefix(entry, 1, 1); /* Type */
73 build_append_int_noprefix(entry, 12, 1); /* Length */
74 build_append_int_noprefix(entry, id, 1); /* IO APIC ID */
75 build_append_int_noprefix(entry, 0, 1); /* Reserved */
76 build_append_int_noprefix(entry, addr, 4); /* IO APIC Address */
77 build_append_int_noprefix(entry, irq, 4); /* System Vector Base */
78 }
79
80 static void
81 build_xrupt_override(GArray *entry, uint8_t src, uint32_t gsi, uint16_t flags)
82 {
83 /* Rev 1.0b, 5.2.8.3.1 Interrupt Source Overrides */
84 build_append_int_noprefix(entry, 2, 1); /* Type */
85 build_append_int_noprefix(entry, 10, 1); /* Length */
86 build_append_int_noprefix(entry, 0, 1); /* Bus */
87 build_append_int_noprefix(entry, src, 1); /* Source */
88 /* Global System Interrupt Vector */
89 build_append_int_noprefix(entry, gsi, 4);
90 build_append_int_noprefix(entry, flags, 2); /* Flags */
91 }
92
93 /*
94 * ACPI spec, Revision 1.0b
95 * 5.2.8 Multiple APIC Description Table
96 */
97 void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
98 X86MachineState *x86ms, AcpiDeviceIf *adev,
99 const char *oem_id, const char *oem_table_id)
100 {
101 int i;
102 bool x2apic_mode = false;
103 MachineClass *mc = MACHINE_GET_CLASS(x86ms);
104 const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(x86ms));
105 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(adev);
106 AcpiTable table = { .sig = "APIC", .rev = 1, .oem_id = oem_id,
107 .oem_table_id = oem_table_id };
108
109 acpi_table_begin(&table, table_data);
110 /* Local APIC Address */
111 build_append_int_noprefix(table_data, APIC_DEFAULT_ADDRESS, 4);
112 build_append_int_noprefix(table_data, 1 /* PCAT_COMPAT */, 4); /* Flags */
113
114 for (i = 0; i < apic_ids->len; i++) {
115 adevc->madt_cpu(adev, i, apic_ids, table_data, false);
116 if (apic_ids->cpus[i].arch_id > 254) {
117 x2apic_mode = true;
118 }
119 }
120
121 build_ioapic(table_data, ACPI_BUILD_IOAPIC_ID, IO_APIC_DEFAULT_ADDRESS, 0);
122 if (x86ms->ioapic2) {
123 build_ioapic(table_data, ACPI_BUILD_IOAPIC_ID + 1,
124 IO_APIC_SECONDARY_ADDRESS, IO_APIC_SECONDARY_IRQBASE);
125 }
126
127 if (x86ms->apic_xrupt_override) {
128 build_xrupt_override(table_data, 0, 2,
129 0 /* Flags: Conforms to the specifications of the bus */);
130 }
131
132 for (i = 1; i < 16; i++) {
133 if (!(x86ms->pci_irq_mask & (1 << i))) {
134 /* No need for a INT source override structure. */
135 continue;
136 }
137 build_xrupt_override(table_data, i, i,
138 0xd /* Flags: Active high, Level Triggered */);
139 }
140
141 if (x2apic_mode) {
142 /* Rev 4.0, 5.2.12.13 Local x2APIC NMI Structure*/
143 build_append_int_noprefix(table_data, 0xA, 1); /* Type */
144 build_append_int_noprefix(table_data, 12, 1); /* Length */
145 build_append_int_noprefix(table_data, 0, 2); /* Flags */
146 /* ACPI Processor UID */
147 build_append_int_noprefix(table_data, 0xFFFFFFFF /* all processors */,
148 4);
149 /* Local x2APIC LINT# */
150 build_append_int_noprefix(table_data, 1 /* ACPI_LINT1 */, 1);
151 build_append_int_noprefix(table_data, 0, 3); /* Reserved */
152 } else {
153 /* Rev 1.0b, 5.2.8.3.3 Local APIC NMI */
154 build_append_int_noprefix(table_data, 4, 1); /* Type */
155 build_append_int_noprefix(table_data, 6, 1); /* Length */
156 /* ACPI Processor ID */
157 build_append_int_noprefix(table_data, 0xFF /* all processors */, 1);
158 build_append_int_noprefix(table_data, 0, 2); /* Flags */
159 /* Local APIC INTI# */
160 build_append_int_noprefix(table_data, 1 /* ACPI_LINT1 */, 1);
161 }
162
163 acpi_table_end(linker, &table);
164 }
165