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Eduardo Habkosta1a9cb02014-09-26 17:45:17 -03001/*
2 * QEMU System Emulator, accelerator interfaces
3 *
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"
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -030027#include "sysemu/accel.h"
Eduardo Habkostf6a1ef62014-09-26 17:45:30 -030028#include "hw/boards.h"
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -030029#include "qemu-common.h"
30#include "sysemu/arch_init.h"
31#include "sysemu/sysemu.h"
32#include "sysemu/kvm.h"
33#include "sysemu/qtest.h"
34#include "hw/xen/xen.h"
Eduardo Habkostb14a0b72014-09-26 17:45:21 -030035#include "qom/object.h"
Eduardo Habkostac2da552014-09-26 17:45:31 -030036#include "hw/boards.h"
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -030037
38int tcg_tb_size;
39static bool tcg_allowed = true;
40
Eduardo Habkostf6a1ef62014-09-26 17:45:30 -030041static int tcg_init(MachineState *ms)
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -030042{
43 tcg_exec_init(tcg_tb_size * 1024 * 1024);
44 return 0;
45}
46
Eduardo Habkostb14a0b72014-09-26 17:45:21 -030047static const TypeInfo accel_type = {
48 .name = TYPE_ACCEL,
49 .parent = TYPE_OBJECT,
50 .class_size = sizeof(AccelClass),
51 .instance_size = sizeof(AccelState),
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -030052};
53
Eduardo Habkostb14a0b72014-09-26 17:45:21 -030054/* Lookup AccelClass from opt_name. Returns NULL if not found */
55static AccelClass *accel_find(const char *opt_name)
Eduardo Habkosta2246552014-09-26 17:45:20 -030056{
Eduardo Habkostb14a0b72014-09-26 17:45:21 -030057 char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
58 AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name));
59 g_free(class_name);
60 return ac;
Eduardo Habkosta2246552014-09-26 17:45:20 -030061}
62
Eduardo Habkostf6a1ef62014-09-26 17:45:30 -030063static int accel_init_machine(AccelClass *acc, MachineState *ms)
Eduardo Habkostd95c8522014-09-26 17:45:28 -030064{
Eduardo Habkostac2da552014-09-26 17:45:31 -030065 ObjectClass *oc = OBJECT_CLASS(acc);
66 const char *cname = object_class_get_name(oc);
67 AccelState *accel = ACCEL(object_new(cname));
Eduardo Habkostd95c8522014-09-26 17:45:28 -030068 int ret;
Eduardo Habkostac2da552014-09-26 17:45:31 -030069 ms->accelerator = accel;
Eduardo Habkostd95c8522014-09-26 17:45:28 -030070 *(acc->allowed) = true;
Eduardo Habkostf6a1ef62014-09-26 17:45:30 -030071 ret = acc->init_machine(ms);
Eduardo Habkostd95c8522014-09-26 17:45:28 -030072 if (ret < 0) {
Eduardo Habkostac2da552014-09-26 17:45:31 -030073 ms->accelerator = NULL;
Eduardo Habkostd95c8522014-09-26 17:45:28 -030074 *(acc->allowed) = false;
Eduardo Habkostac2da552014-09-26 17:45:31 -030075 object_unref(OBJECT(accel));
Eduardo Habkostd95c8522014-09-26 17:45:28 -030076 }
77 return ret;
78}
79
Eduardo Habkostf6a1ef62014-09-26 17:45:30 -030080int configure_accelerator(MachineState *ms)
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -030081{
82 const char *p;
83 char buf[10];
Eduardo Habkosta2246552014-09-26 17:45:20 -030084 int ret;
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -030085 bool accel_initialised = false;
86 bool init_failed = false;
Eduardo Habkostb14a0b72014-09-26 17:45:21 -030087 AccelClass *acc = NULL;
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -030088
89 p = qemu_opt_get(qemu_get_machine_opts(), "accel");
90 if (p == NULL) {
91 /* Use the default "accelerator", tcg */
92 p = "tcg";
93 }
94
95 while (!accel_initialised && *p != '\0') {
96 if (*p == ':') {
97 p++;
98 }
99 p = get_opt_name(buf, sizeof(buf), p, ':');
Eduardo Habkosta2246552014-09-26 17:45:20 -0300100 acc = accel_find(buf);
101 if (!acc) {
Eduardo Habkostb31f9ac2014-09-26 17:45:23 -0300102 fprintf(stderr, "\"%s\" accelerator not found.\n", buf);
Eduardo Habkosta2246552014-09-26 17:45:20 -0300103 continue;
104 }
Eduardo Habkostf6dfb832014-09-26 17:45:22 -0300105 if (acc->available && !acc->available()) {
Eduardo Habkosta2246552014-09-26 17:45:20 -0300106 printf("%s not supported for this target\n",
107 acc->name);
108 continue;
109 }
Eduardo Habkostf6a1ef62014-09-26 17:45:30 -0300110 ret = accel_init_machine(acc, ms);
Eduardo Habkosta2246552014-09-26 17:45:20 -0300111 if (ret < 0) {
112 init_failed = true;
113 fprintf(stderr, "failed to initialize %s: %s\n",
114 acc->name,
115 strerror(-ret));
Eduardo Habkosta2246552014-09-26 17:45:20 -0300116 } else {
117 accel_initialised = true;
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -0300118 }
119 }
120
121 if (!accel_initialised) {
122 if (!init_failed) {
123 fprintf(stderr, "No accelerator found!\n");
124 }
125 exit(1);
126 }
127
128 if (init_failed) {
Eduardo Habkoste8b466e2014-09-26 17:45:19 -0300129 fprintf(stderr, "Back to %s accelerator.\n", acc->name);
Eduardo Habkosta1a9cb02014-09-26 17:45:17 -0300130 }
131
132 return !accel_initialised;
133}
Eduardo Habkostb14a0b72014-09-26 17:45:21 -0300134
135
136static void tcg_accel_class_init(ObjectClass *oc, void *data)
137{
138 AccelClass *ac = ACCEL_CLASS(oc);
139 ac->name = "tcg";
Eduardo Habkost0d15da82014-09-26 17:45:29 -0300140 ac->init_machine = tcg_init;
Eduardo Habkostb14a0b72014-09-26 17:45:21 -0300141 ac->allowed = &tcg_allowed;
142}
143
144#define TYPE_TCG_ACCEL ACCEL_CLASS_NAME("tcg")
145
146static const TypeInfo tcg_accel_type = {
147 .name = TYPE_TCG_ACCEL,
148 .parent = TYPE_ACCEL,
149 .class_init = tcg_accel_class_init,
150};
151
Eduardo Habkostb14a0b72014-09-26 17:45:21 -0300152static void register_accel_types(void)
153{
154 type_register_static(&accel_type);
155 type_register_static(&tcg_accel_type);
Eduardo Habkostb14a0b72014-09-26 17:45:21 -0300156}
157
158type_init(register_accel_types);