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git.proxmox.com Git - qemu.git/blob - include/qom/cpu.h
4 * Copyright (c) 2012 SUSE LINUX Products GmbH
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.
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.
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>
23 #include "hw/qdev-core.h"
24 #include "qemu/thread.h"
28 * @section_id: QEMU-cpu
30 * @short_description: Base class for all CPUs
33 #define TYPE_CPU "cpu"
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)
39 typedef struct CPUState CPUState
;
43 * @class_by_name: Callback to map -cpu command line model name to an
44 * instantiatable CPU type.
45 * @reset: Callback to reset the #CPUState to its initial state.
47 * Represents a CPU family or model.
49 typedef struct CPUClass
{
51 DeviceClass parent_class
;
54 ObjectClass
*(*class_by_name
)(const char *cpu_model
);
56 void (*reset
)(CPUState
*cpu
);
64 * @cpu_index: CPU index (informative).
65 * @nr_cores: Number of cores within this CPU package.
66 * @nr_threads: Number of threads within this CPU.
67 * @numa_node: NUMA node this CPU is belonging to.
68 * @created: Indicates whether the CPU thread has been successfully created.
69 * @stop: Indicates a pending stop request.
70 * @stopped: Indicates the CPU has been artificially stopped.
71 * @kvm_fd: vCPU file descriptor for KVM.
73 * State of one CPU core or thread.
77 DeviceState parent_obj
;
84 struct QemuThread
*thread
;
89 struct QemuCond
*halt_cond
;
90 struct qemu_work_item
*queued_work_first
, *queued_work_last
;
96 #if !defined(CONFIG_USER_ONLY)
100 struct KVMState
*kvm_state
;
101 struct kvm_run
*kvm_run
;
103 /* TODO Move common fields from CPUArchState here. */
104 int cpu_index
; /* used by alpha TCG */
110 * @cpu: The CPU whose state is to be reset.
112 void cpu_reset(CPUState
*cpu
);
116 * @typename: The CPU base type.
117 * @cpu_model: The model string without any parameters.
119 * Looks up a CPU #ObjectClass matching name @cpu_model.
121 * Returns: A #CPUClass or %NULL if not matching class is found.
123 ObjectClass
*cpu_class_by_name(const char *typename
, const char *cpu_model
);
127 * @cpu: The vCPU to check.
129 * Checks whether the CPU has work to do.
131 * Returns: %true if the CPU has work, %false otherwise.
133 bool qemu_cpu_has_work(CPUState
*cpu
);
137 * @cpu: The vCPU to check against.
139 * Checks whether the caller is executing on the vCPU thread.
141 * Returns: %true if called from @cpu's thread, %false otherwise.
143 bool qemu_cpu_is_self(CPUState
*cpu
);
147 * @cpu: The vCPU to kick.
149 * Kicks @cpu's thread.
151 void qemu_cpu_kick(CPUState
*cpu
);
155 * @cpu: The CPU to check.
157 * Checks whether the CPU is stopped.
159 * Returns: %true if run state is not running or if artificially stopped;
162 bool cpu_is_stopped(CPUState
*cpu
);
166 * @cpu: The vCPU to run on.
167 * @func: The function to be executed.
168 * @data: Data to pass to the function.
170 * Schedules the function @func for execution on the vCPU @cpu.
172 void run_on_cpu(CPUState
*cpu
, void (*func
)(void *data
), void *data
);
176 * @index: The CPUState@cpu_index value of the CPU to obtain.
178 * Gets a CPU matching @index.
180 * Returns: The CPU or %NULL if there is no matching CPU.
182 CPUState
*qemu_get_cpu(int index
);