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a1a9cb0c EH |
1 | /* |
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 | ||
26 | #include "sysemu/accel.h" | |
27 | #include "qemu-common.h" | |
28 | #include "sysemu/arch_init.h" | |
29 | #include "sysemu/sysemu.h" | |
30 | #include "sysemu/kvm.h" | |
31 | #include "sysemu/qtest.h" | |
32 | #include "hw/xen/xen.h" | |
b14a0b74 | 33 | #include "qom/object.h" |
a1a9cb0c EH |
34 | |
35 | int tcg_tb_size; | |
36 | static bool tcg_allowed = true; | |
37 | ||
38 | static int tcg_init(MachineClass *mc) | |
39 | { | |
40 | tcg_exec_init(tcg_tb_size * 1024 * 1024); | |
41 | return 0; | |
42 | } | |
43 | ||
b14a0b74 EH |
44 | static const TypeInfo accel_type = { |
45 | .name = TYPE_ACCEL, | |
46 | .parent = TYPE_OBJECT, | |
47 | .class_size = sizeof(AccelClass), | |
48 | .instance_size = sizeof(AccelState), | |
a1a9cb0c EH |
49 | }; |
50 | ||
b14a0b74 EH |
51 | /* Lookup AccelClass from opt_name. Returns NULL if not found */ |
52 | static AccelClass *accel_find(const char *opt_name) | |
a2246552 | 53 | { |
b14a0b74 EH |
54 | char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name); |
55 | AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name)); | |
56 | g_free(class_name); | |
57 | return ac; | |
a2246552 EH |
58 | } |
59 | ||
a1a9cb0c EH |
60 | int configure_accelerator(MachineClass *mc) |
61 | { | |
62 | const char *p; | |
63 | char buf[10]; | |
a2246552 | 64 | int ret; |
a1a9cb0c EH |
65 | bool accel_initialised = false; |
66 | bool init_failed = false; | |
b14a0b74 | 67 | AccelClass *acc = NULL; |
a1a9cb0c EH |
68 | |
69 | p = qemu_opt_get(qemu_get_machine_opts(), "accel"); | |
70 | if (p == NULL) { | |
71 | /* Use the default "accelerator", tcg */ | |
72 | p = "tcg"; | |
73 | } | |
74 | ||
75 | while (!accel_initialised && *p != '\0') { | |
76 | if (*p == ':') { | |
77 | p++; | |
78 | } | |
79 | p = get_opt_name(buf, sizeof(buf), p, ':'); | |
a2246552 EH |
80 | acc = accel_find(buf); |
81 | if (!acc) { | |
a1a9cb0c | 82 | fprintf(stderr, "\"%s\" accelerator does not exist.\n", buf); |
a2246552 EH |
83 | continue; |
84 | } | |
85 | if (!acc->available()) { | |
86 | printf("%s not supported for this target\n", | |
87 | acc->name); | |
88 | continue; | |
89 | } | |
90 | *(acc->allowed) = true; | |
91 | ret = acc->init(mc); | |
92 | if (ret < 0) { | |
93 | init_failed = true; | |
94 | fprintf(stderr, "failed to initialize %s: %s\n", | |
95 | acc->name, | |
96 | strerror(-ret)); | |
97 | *(acc->allowed) = false; | |
98 | } else { | |
99 | accel_initialised = true; | |
a1a9cb0c EH |
100 | } |
101 | } | |
102 | ||
103 | if (!accel_initialised) { | |
104 | if (!init_failed) { | |
105 | fprintf(stderr, "No accelerator found!\n"); | |
106 | } | |
107 | exit(1); | |
108 | } | |
109 | ||
110 | if (init_failed) { | |
e8b466ef | 111 | fprintf(stderr, "Back to %s accelerator.\n", acc->name); |
a1a9cb0c EH |
112 | } |
113 | ||
114 | return !accel_initialised; | |
115 | } | |
b14a0b74 EH |
116 | |
117 | ||
118 | static void tcg_accel_class_init(ObjectClass *oc, void *data) | |
119 | { | |
120 | AccelClass *ac = ACCEL_CLASS(oc); | |
121 | ac->name = "tcg"; | |
122 | ac->available = tcg_available; | |
123 | ac->init = tcg_init; | |
124 | ac->allowed = &tcg_allowed; | |
125 | } | |
126 | ||
127 | #define TYPE_TCG_ACCEL ACCEL_CLASS_NAME("tcg") | |
128 | ||
129 | static const TypeInfo tcg_accel_type = { | |
130 | .name = TYPE_TCG_ACCEL, | |
131 | .parent = TYPE_ACCEL, | |
132 | .class_init = tcg_accel_class_init, | |
133 | }; | |
134 | ||
135 | static void xen_accel_class_init(ObjectClass *oc, void *data) | |
136 | { | |
137 | AccelClass *ac = ACCEL_CLASS(oc); | |
138 | ac->name = "Xen"; | |
139 | ac->available = xen_available; | |
140 | ac->init = xen_init; | |
141 | ac->allowed = &xen_allowed; | |
142 | } | |
143 | ||
144 | #define TYPE_XEN_ACCEL ACCEL_CLASS_NAME("xen") | |
145 | ||
146 | static const TypeInfo xen_accel_type = { | |
147 | .name = TYPE_XEN_ACCEL, | |
148 | .parent = TYPE_ACCEL, | |
149 | .class_init = xen_accel_class_init, | |
150 | }; | |
151 | ||
152 | static void kvm_accel_class_init(ObjectClass *oc, void *data) | |
153 | { | |
154 | AccelClass *ac = ACCEL_CLASS(oc); | |
155 | ac->name = "KVM"; | |
156 | ac->available = kvm_available; | |
157 | ac->init = kvm_init; | |
158 | ac->allowed = &kvm_allowed; | |
159 | } | |
160 | ||
161 | #define TYPE_KVM_ACCEL ACCEL_CLASS_NAME("kvm") | |
162 | ||
163 | static const TypeInfo kvm_accel_type = { | |
164 | .name = TYPE_KVM_ACCEL, | |
165 | .parent = TYPE_ACCEL, | |
166 | .class_init = kvm_accel_class_init, | |
167 | }; | |
168 | ||
169 | static void qtest_accel_class_init(ObjectClass *oc, void *data) | |
170 | { | |
171 | AccelClass *ac = ACCEL_CLASS(oc); | |
172 | ac->name = "QTest"; | |
173 | ac->available = qtest_available; | |
174 | ac->init = qtest_init_accel; | |
175 | ac->allowed = &qtest_allowed; | |
176 | } | |
177 | ||
178 | #define TYPE_QTEST_ACCEL ACCEL_CLASS_NAME("qtest") | |
179 | ||
180 | static const TypeInfo qtest_accel_type = { | |
181 | .name = TYPE_QTEST_ACCEL, | |
182 | .parent = TYPE_ACCEL, | |
183 | .class_init = qtest_accel_class_init, | |
184 | }; | |
185 | ||
186 | static void register_accel_types(void) | |
187 | { | |
188 | type_register_static(&accel_type); | |
189 | type_register_static(&tcg_accel_type); | |
190 | type_register_static(&xen_accel_type); | |
191 | type_register_static(&kvm_accel_type); | |
192 | type_register_static(&qtest_accel_type); | |
193 | } | |
194 | ||
195 | type_init(register_accel_types); |