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dd83b06a AF |
1 | /* |
2 | * QEMU CPU model | |
3 | * | |
4 | * Copyright (c) 2012 SUSE LINUX Products GmbH | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, see | |
18 | * <http://www.gnu.org/licenses/gpl-2.0.html> | |
19 | */ | |
20 | #ifndef QEMU_CPU_H | |
21 | #define QEMU_CPU_H | |
22 | ||
961f8395 | 23 | #include "hw/qdev-core.h" |
1de7afc9 | 24 | #include "qemu/thread.h" |
dd83b06a AF |
25 | |
26 | /** | |
27 | * SECTION:cpu | |
28 | * @section_id: QEMU-cpu | |
29 | * @title: CPU Class | |
30 | * @short_description: Base class for all CPUs | |
31 | */ | |
32 | ||
33 | #define TYPE_CPU "cpu" | |
34 | ||
35 | #define CPU(obj) OBJECT_CHECK(CPUState, (obj), TYPE_CPU) | |
36 | #define CPU_CLASS(class) OBJECT_CLASS_CHECK(CPUClass, (class), TYPE_CPU) | |
37 | #define CPU_GET_CLASS(obj) OBJECT_GET_CLASS(CPUClass, (obj), TYPE_CPU) | |
38 | ||
39 | typedef struct CPUState CPUState; | |
40 | ||
41 | /** | |
42 | * CPUClass: | |
f5df5baf | 43 | * @reset: Callback to reset the #CPUState to its initial state. |
dd83b06a AF |
44 | * |
45 | * Represents a CPU family or model. | |
46 | */ | |
47 | typedef struct CPUClass { | |
48 | /*< private >*/ | |
961f8395 | 49 | DeviceClass parent_class; |
dd83b06a AF |
50 | /*< public >*/ |
51 | ||
52 | void (*reset)(CPUState *cpu); | |
53 | } CPUClass; | |
54 | ||
a60f24b5 | 55 | struct KVMState; |
f7575c96 | 56 | struct kvm_run; |
a60f24b5 | 57 | |
dd83b06a AF |
58 | /** |
59 | * CPUState: | |
55e5c285 | 60 | * @cpu_index: CPU index (informative). |
ce3960eb AF |
61 | * @nr_cores: Number of cores within this CPU package. |
62 | * @nr_threads: Number of threads within this CPU. | |
1b1ed8dc | 63 | * @numa_node: NUMA node this CPU is belonging to. |
61a46217 | 64 | * @created: Indicates whether the CPU thread has been successfully created. |
4fdeee7c | 65 | * @stop: Indicates a pending stop request. |
f324e766 | 66 | * @stopped: Indicates the CPU has been artificially stopped. |
8737c51c | 67 | * @kvm_fd: vCPU file descriptor for KVM. |
dd83b06a AF |
68 | * |
69 | * State of one CPU core or thread. | |
70 | */ | |
71 | struct CPUState { | |
72 | /*< private >*/ | |
961f8395 | 73 | DeviceState parent_obj; |
dd83b06a AF |
74 | /*< public >*/ |
75 | ||
ce3960eb AF |
76 | int nr_cores; |
77 | int nr_threads; | |
1b1ed8dc | 78 | int numa_node; |
ce3960eb | 79 | |
814e612e | 80 | struct QemuThread *thread; |
bcba2a72 AF |
81 | #ifdef _WIN32 |
82 | HANDLE hThread; | |
83 | #endif | |
9f09e18a | 84 | int thread_id; |
f5c121b8 | 85 | struct QemuCond *halt_cond; |
c64ca814 | 86 | struct qemu_work_item *queued_work_first, *queued_work_last; |
216fc9a4 | 87 | bool thread_kicked; |
61a46217 | 88 | bool created; |
4fdeee7c | 89 | bool stop; |
f324e766 | 90 | bool stopped; |
bcba2a72 | 91 | |
8737c51c AF |
92 | #if !defined(CONFIG_USER_ONLY) |
93 | int kvm_fd; | |
20d695a9 | 94 | bool kvm_vcpu_dirty; |
8737c51c | 95 | #endif |
a60f24b5 | 96 | struct KVMState *kvm_state; |
f7575c96 | 97 | struct kvm_run *kvm_run; |
8737c51c | 98 | |
f5df5baf | 99 | /* TODO Move common fields from CPUArchState here. */ |
55e5c285 | 100 | int cpu_index; /* used by alpha TCG */ |
dd83b06a AF |
101 | }; |
102 | ||
103 | ||
104 | /** | |
105 | * cpu_reset: | |
106 | * @cpu: The CPU whose state is to be reset. | |
107 | */ | |
108 | void cpu_reset(CPUState *cpu); | |
109 | ||
3993c6bd AF |
110 | /** |
111 | * qemu_cpu_has_work: | |
112 | * @cpu: The vCPU to check. | |
113 | * | |
114 | * Checks whether the CPU has work to do. | |
115 | * | |
116 | * Returns: %true if the CPU has work, %false otherwise. | |
117 | */ | |
118 | bool qemu_cpu_has_work(CPUState *cpu); | |
119 | ||
60e82579 AF |
120 | /** |
121 | * qemu_cpu_is_self: | |
122 | * @cpu: The vCPU to check against. | |
123 | * | |
124 | * Checks whether the caller is executing on the vCPU thread. | |
125 | * | |
126 | * Returns: %true if called from @cpu's thread, %false otherwise. | |
127 | */ | |
128 | bool qemu_cpu_is_self(CPUState *cpu); | |
129 | ||
c08d7424 AF |
130 | /** |
131 | * qemu_cpu_kick: | |
132 | * @cpu: The vCPU to kick. | |
133 | * | |
134 | * Kicks @cpu's thread. | |
135 | */ | |
136 | void qemu_cpu_kick(CPUState *cpu); | |
137 | ||
2fa45344 AF |
138 | /** |
139 | * cpu_is_stopped: | |
140 | * @cpu: The CPU to check. | |
141 | * | |
142 | * Checks whether the CPU is stopped. | |
143 | * | |
144 | * Returns: %true if run state is not running or if artificially stopped; | |
145 | * %false otherwise. | |
146 | */ | |
147 | bool cpu_is_stopped(CPUState *cpu); | |
148 | ||
f100f0b3 AF |
149 | /** |
150 | * run_on_cpu: | |
151 | * @cpu: The vCPU to run on. | |
152 | * @func: The function to be executed. | |
153 | * @data: Data to pass to the function. | |
154 | * | |
155 | * Schedules the function @func for execution on the vCPU @cpu. | |
156 | */ | |
157 | void run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data); | |
158 | ||
38d8f5c8 AF |
159 | /** |
160 | * qemu_get_cpu: | |
161 | * @index: The CPUState@cpu_index value of the CPU to obtain. | |
162 | * | |
163 | * Gets a CPU matching @index. | |
164 | * | |
165 | * Returns: The CPU or %NULL if there is no matching CPU. | |
166 | */ | |
167 | CPUState *qemu_get_cpu(int index); | |
168 | ||
dd83b06a AF |
169 | |
170 | #endif |