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Eduardo Habkosta1a9cb02014-09-26 17:45:17 -03001/*
Claudio Fontana940e43a2021-02-04 17:39:24 +01002 * QEMU accel class, components common to system emulation and user mode
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -03003 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2014 Red Hat Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25
Peter Maydelld38ea872016-01-29 17:50:05 +000026#include "qemu/osdep.h"
Claudio Fontana940e43a2021-02-04 17:39:24 +010027#include "qemu/accel.h"
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -030028
Claudio Fontanafb6916d2021-02-04 17:39:26 +010029#include "cpu.h"
30#include "hw/core/accel-cpu.h"
31
Claudio Fontanab86f59c2021-02-04 17:39:25 +010032#ifndef CONFIG_USER_ONLY
Philippe Mathieu-Daudé0017c642023-10-04 11:06:21 +020033#include "accel-system.h"
Claudio Fontanab86f59c2021-02-04 17:39:25 +010034#endif /* !CONFIG_USER_ONLY */
35
Eduardo Habkostb14a0b72014-09-26 17:45:21 -030036static const TypeInfo accel_type = {
37 .name = TYPE_ACCEL,
38 .parent = TYPE_OBJECT,
39 .class_size = sizeof(AccelClass),
40 .instance_size = sizeof(AccelState),
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -030041};
42
Eduardo Habkostb14a0b72014-09-26 17:45:21 -030043/* Lookup AccelClass from opt_name. Returns NULL if not found */
Paolo Bonzini28a09612019-11-13 09:59:04 +010044AccelClass *accel_find(const char *opt_name)
Eduardo Habkosta2246552014-09-26 17:45:20 -030045{
Eduardo Habkostb14a0b72014-09-26 17:45:21 -030046 char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
Gerd Hoffmannf9349072021-06-24 12:38:27 +020047 AccelClass *ac = ACCEL_CLASS(module_object_class_by_name(class_name));
Eduardo Habkostb14a0b72014-09-26 17:45:21 -030048 g_free(class_name);
49 return ac;
Eduardo Habkosta2246552014-09-26 17:45:20 -030050}
51
Alexander Graf55bd4452022-06-24 15:42:56 +010052/* Return the name of the current accelerator */
53const char *current_accel_name(void)
54{
55 AccelClass *ac = ACCEL_GET_CLASS(current_accel());
56
57 return ac->name;
58}
59
Claudio Fontanafb6916d2021-02-04 17:39:26 +010060static void accel_init_cpu_int_aux(ObjectClass *klass, void *opaque)
61{
62 CPUClass *cc = CPU_CLASS(klass);
63 AccelCPUClass *accel_cpu = opaque;
64
Claudio Fontanacc3f2be2021-03-22 14:27:59 +010065 /*
66 * The first callback allows accel-cpu to run initializations
67 * for the CPU, customizing CPU behavior according to the accelerator.
68 *
69 * The second one allows the CPU to customize the accel-cpu
70 * behavior according to the CPU.
71 *
72 * The second is currently only used by TCG, to specialize the
73 * TCGCPUOps depending on the CPU type.
74 */
Claudio Fontanafb6916d2021-02-04 17:39:26 +010075 cc->accel_cpu = accel_cpu;
76 if (accel_cpu->cpu_class_init) {
77 accel_cpu->cpu_class_init(cc);
78 }
Claudio Fontanacc3f2be2021-03-22 14:27:59 +010079 if (cc->init_accel_cpu) {
80 cc->init_accel_cpu(accel_cpu, cc);
81 }
Claudio Fontanafb6916d2021-02-04 17:39:26 +010082}
83
84/* initialize the arch-specific accel CpuClass interfaces */
85static void accel_init_cpu_interfaces(AccelClass *ac)
86{
87 const char *ac_name; /* AccelClass name */
88 char *acc_name; /* AccelCPUClass name */
89 ObjectClass *acc; /* AccelCPUClass */
90
91 ac_name = object_class_get_name(OBJECT_CLASS(ac));
92 g_assert(ac_name != NULL);
93
94 acc_name = g_strdup_printf("%s-%s", ac_name, CPU_RESOLVING_TYPE);
95 acc = object_class_by_name(acc_name);
96 g_free(acc_name);
97
98 if (acc) {
99 object_class_foreach(accel_init_cpu_int_aux,
100 CPU_RESOLVING_TYPE, false, acc);
101 }
102}
103
Claudio Fontanab86f59c2021-02-04 17:39:25 +0100104void accel_init_interfaces(AccelClass *ac)
105{
106#ifndef CONFIG_USER_ONLY
Philippe Mathieu-Daudé463b0062024-01-10 10:00:53 +0100107 accel_system_init_ops_interfaces(ac);
Claudio Fontanab86f59c2021-02-04 17:39:25 +0100108#endif /* !CONFIG_USER_ONLY */
Claudio Fontanafb6916d2021-02-04 17:39:26 +0100109
110 accel_init_cpu_interfaces(ac);
Claudio Fontanab86f59c2021-02-04 17:39:25 +0100111}
112
Claudio Fontanabb883fd2021-03-22 14:27:42 +0100113void accel_cpu_instance_init(CPUState *cpu)
114{
115 CPUClass *cc = CPU_GET_CLASS(cpu);
116
117 if (cc->accel_cpu && cc->accel_cpu->cpu_instance_init) {
118 cc->accel_cpu->cpu_instance_init(cpu);
119 }
120}
121
Philippe Mathieu-Daudébd684b22023-10-03 14:30:21 +0200122bool accel_cpu_common_realize(CPUState *cpu, Error **errp)
Claudio Fontanabb883fd2021-03-22 14:27:42 +0100123{
124 CPUClass *cc = CPU_GET_CLASS(cpu);
Philippe Mathieu-Daudé59851862023-10-03 14:30:23 +0200125 AccelState *accel = current_accel();
126 AccelClass *acc = ACCEL_GET_CLASS(accel);
Claudio Fontanabb883fd2021-03-22 14:27:42 +0100127
Philippe Mathieu-Daudé59851862023-10-03 14:30:23 +0200128 /* target specific realization */
129 if (cc->accel_cpu && cc->accel_cpu->cpu_target_realize
130 && !cc->accel_cpu->cpu_target_realize(cpu, errp)) {
131 return false;
Claudio Fontanabb883fd2021-03-22 14:27:42 +0100132 }
Philippe Mathieu-Daudé59851862023-10-03 14:30:23 +0200133
134 /* generic realization */
135 if (acc->cpu_common_realize && !acc->cpu_common_realize(cpu, errp)) {
136 return false;
137 }
138
Claudio Fontana9ea057d2021-03-22 14:27:44 +0100139 return true;
Claudio Fontanabb883fd2021-03-22 14:27:42 +0100140}
141
Philippe Mathieu-Daudé1aa1d832023-10-03 14:30:22 +0200142void accel_cpu_common_unrealize(CPUState *cpu)
143{
Philippe Mathieu-Daudé59851862023-10-03 14:30:23 +0200144 AccelState *accel = current_accel();
145 AccelClass *acc = ACCEL_GET_CLASS(accel);
146
147 /* generic unrealization */
148 if (acc->cpu_common_unrealize) {
149 acc->cpu_common_unrealize(cpu);
150 }
Philippe Mathieu-Daudé1aa1d832023-10-03 14:30:22 +0200151}
152
Alex Bennée3b7a9382022-09-29 12:42:23 +0100153int accel_supported_gdbstub_sstep_flags(void)
154{
155 AccelState *accel = current_accel();
156 AccelClass *acc = ACCEL_GET_CLASS(accel);
157 if (acc->gdbstub_supported_sstep_flags) {
158 return acc->gdbstub_supported_sstep_flags();
159 }
160 return 0;
161}
162
Claudio Fontanafb6916d2021-02-04 17:39:26 +0100163static const TypeInfo accel_cpu_type = {
164 .name = TYPE_ACCEL_CPU,
165 .parent = TYPE_OBJECT,
166 .abstract = true,
167 .class_size = sizeof(AccelCPUClass),
168};
169
Eduardo Habkostb14a0b72014-09-26 17:45:21 -0300170static void register_accel_types(void)
171{
172 type_register_static(&accel_type);
Claudio Fontanafb6916d2021-02-04 17:39:26 +0100173 type_register_static(&accel_cpu_type);
Eduardo Habkostb14a0b72014-09-26 17:45:21 -0300174}
175
176type_init(register_accel_types);