2 * QEMU System Emulator, accelerator interfaces
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2014 Red Hat Inc.
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:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
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
26 #include "sysemu/accel.h"
27 #include "hw/boards.h"
28 #include "qemu-common.h"
29 #include "sysemu/arch_init.h"
30 #include "sysemu/sysemu.h"
31 #include "sysemu/kvm.h"
32 #include "sysemu/qtest.h"
33 #include "hw/xen/xen.h"
34 #include "qom/object.h"
35 #include "hw/boards.h"
36 #include "sysemu/hax.h"
37 #include "qemu/error-report.h"
40 static bool tcg_allowed = true;
42 static int tcg_init(MachineState *ms)
44 tcg_exec_init(tcg_tb_size * 1024 * 1024);
48 static const TypeInfo accel_type = {
50 .parent = TYPE_OBJECT,
51 .class_size = sizeof(AccelClass),
52 .instance_size = sizeof(AccelState),
55 /* Lookup AccelClass from opt_name. Returns NULL if not found */
56 static AccelClass *accel_find(const char *opt_name)
58 char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
59 AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name));
64 static int accel_init_machine(AccelClass *acc, MachineState *ms)
66 ObjectClass *oc = OBJECT_CLASS(acc);
67 const char *cname = object_class_get_name(oc);
68 AccelState *accel = ACCEL(object_new(cname));
70 ms->accelerator = accel;
71 *(acc->allowed) = true;
72 ret = acc->init_machine(ms);
74 ms->accelerator = NULL;
75 *(acc->allowed) = false;
76 object_unref(OBJECT(accel));
81 int configure_accelerator(MachineState *ms)
86 bool accel_initialised = false;
87 bool init_failed = false;
88 AccelClass *acc = NULL;
90 p = qemu_opt_get(qemu_get_machine_opts(), "accel");
92 /* Use the default "accelerator", tcg */
96 while (!accel_initialised && *p != '\0') {
100 p = get_opt_name(buf, sizeof(buf), p, ':');
101 acc = accel_find(buf);
103 fprintf(stderr, "\"%s\" accelerator not found.\n", buf);
106 if (acc->available && !acc->available()) {
107 printf("%s not supported for this target\n",
111 ret = accel_init_machine(acc, ms);
114 fprintf(stderr, "failed to initialize %s: %s\n",
118 accel_initialised = true;
122 if (!accel_initialised) {
124 // CONFIG_MARU MODIFICATION
125 // fprintf(stderr, "No accelerator found!\n");
126 error_report("No accelerator found!");
132 fprintf(stderr, "Back to %s accelerator.\n", acc->name);
135 return !accel_initialised;
139 static void tcg_accel_class_init(ObjectClass *oc, void *data)
141 AccelClass *ac = ACCEL_CLASS(oc);
143 ac->init_machine = tcg_init;
144 ac->allowed = &tcg_allowed;
147 #define TYPE_TCG_ACCEL ACCEL_CLASS_NAME("tcg")
149 static const TypeInfo tcg_accel_type = {
150 .name = TYPE_TCG_ACCEL,
151 .parent = TYPE_ACCEL,
152 .class_init = tcg_accel_class_init,
155 static void register_accel_types(void)
157 type_register_static(&accel_type);
158 type_register_static(&tcg_accel_type);
161 type_init(register_accel_types);