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Commit | Line | Data |
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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 | ||
d38ea87a | 26 | #include "qemu/osdep.h" |
a1a9cb0c | 27 | #include "sysemu/accel.h" |
f6a1ef64 | 28 | #include "hw/boards.h" |
a1a9cb0c EH |
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" | |
b14a0b74 | 34 | #include "qom/object.h" |
d73f0247 | 35 | #include "qemu/error-report.h" |
922a01a0 | 36 | #include "qemu/option.h" |
745a4f5e | 37 | #include "qapi/error.h" |
a1a9cb0c | 38 | |
b14a0b74 EH |
39 | static const TypeInfo accel_type = { |
40 | .name = TYPE_ACCEL, | |
41 | .parent = TYPE_OBJECT, | |
42 | .class_size = sizeof(AccelClass), | |
43 | .instance_size = sizeof(AccelState), | |
a1a9cb0c EH |
44 | }; |
45 | ||
b14a0b74 EH |
46 | /* Lookup AccelClass from opt_name. Returns NULL if not found */ |
47 | static AccelClass *accel_find(const char *opt_name) | |
a2246552 | 48 | { |
b14a0b74 EH |
49 | char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name); |
50 | AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name)); | |
51 | g_free(class_name); | |
52 | return ac; | |
a2246552 EH |
53 | } |
54 | ||
f6a1ef64 | 55 | static int accel_init_machine(AccelClass *acc, MachineState *ms) |
d95c8527 | 56 | { |
ac2da55e EH |
57 | ObjectClass *oc = OBJECT_CLASS(acc); |
58 | const char *cname = object_class_get_name(oc); | |
59 | AccelState *accel = ACCEL(object_new(cname)); | |
d95c8527 | 60 | int ret; |
ac2da55e | 61 | ms->accelerator = accel; |
d95c8527 | 62 | *(acc->allowed) = true; |
f6a1ef64 | 63 | ret = acc->init_machine(ms); |
d95c8527 | 64 | if (ret < 0) { |
ac2da55e | 65 | ms->accelerator = NULL; |
d95c8527 | 66 | *(acc->allowed) = false; |
ac2da55e | 67 | object_unref(OBJECT(accel)); |
d95c8527 EH |
68 | } |
69 | return ret; | |
70 | } | |
71 | ||
98e56ae6 | 72 | void configure_accelerator(MachineState *ms, const char *progname) |
a1a9cb0c | 73 | { |
20efc49e DB |
74 | const char *accel; |
75 | char **accel_list, **tmp; | |
a2246552 | 76 | int ret; |
a1a9cb0c EH |
77 | bool accel_initialised = false; |
78 | bool init_failed = false; | |
b14a0b74 | 79 | AccelClass *acc = NULL; |
a1a9cb0c | 80 | |
d73f0247 LV |
81 | accel = qemu_opt_get(qemu_get_machine_opts(), "accel"); |
82 | if (accel == NULL) { | |
98e56ae6 TH |
83 | /* Select the default accelerator */ |
84 | int pnlen = strlen(progname); | |
85 | if (pnlen >= 3 && g_str_equal(&progname[pnlen - 3], "kvm")) { | |
86 | /* If the program name ends with "kvm", we prefer KVM */ | |
87 | accel = "kvm:tcg"; | |
88 | } else { | |
89 | #if defined(CONFIG_TCG) | |
90 | accel = "tcg"; | |
91 | #elif defined(CONFIG_KVM) | |
92 | accel = "kvm"; | |
93 | #else | |
94 | #error "No default accelerator available" | |
95 | #endif | |
96 | } | |
a1a9cb0c EH |
97 | } |
98 | ||
20efc49e DB |
99 | accel_list = g_strsplit(accel, ":", 0); |
100 | ||
101 | for (tmp = accel_list; !accel_initialised && tmp && *tmp; tmp++) { | |
102 | acc = accel_find(*tmp); | |
a2246552 | 103 | if (!acc) { |
a2246552 EH |
104 | continue; |
105 | } | |
f6dfb835 | 106 | if (acc->available && !acc->available()) { |
a2246552 EH |
107 | printf("%s not supported for this target\n", |
108 | acc->name); | |
109 | continue; | |
110 | } | |
f6a1ef64 | 111 | ret = accel_init_machine(acc, ms); |
a2246552 EH |
112 | if (ret < 0) { |
113 | init_failed = true; | |
d73f0247 LV |
114 | error_report("failed to initialize %s: %s", |
115 | acc->name, strerror(-ret)); | |
a2246552 EH |
116 | } else { |
117 | accel_initialised = true; | |
a1a9cb0c EH |
118 | } |
119 | } | |
20efc49e | 120 | g_strfreev(accel_list); |
a1a9cb0c EH |
121 | |
122 | if (!accel_initialised) { | |
123 | if (!init_failed) { | |
d73f0247 | 124 | error_report("-machine accel=%s: No accelerator found", accel); |
a1a9cb0c EH |
125 | } |
126 | exit(1); | |
127 | } | |
128 | ||
129 | if (init_failed) { | |
d73f0247 | 130 | error_report("Back to %s accelerator", acc->name); |
a1a9cb0c | 131 | } |
a1a9cb0c | 132 | } |
b14a0b74 | 133 | |
7a64c17f IJ |
134 | void accel_setup_post(MachineState *ms) |
135 | { | |
136 | AccelState *accel = ms->accelerator; | |
137 | AccelClass *acc = ACCEL_GET_CLASS(accel); | |
138 | if (acc->setup_post) { | |
139 | acc->setup_post(ms, accel); | |
140 | } | |
141 | } | |
142 | ||
b14a0b74 EH |
143 | static void register_accel_types(void) |
144 | { | |
145 | type_register_static(&accel_type); | |
b14a0b74 EH |
146 | } |
147 | ||
148 | type_init(register_accel_types); |