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26#include "qemu/osdep.h"
27#include "sysemu/accel.h"
28#include "hw/boards.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 "qemu/error-report.h"
36#include "qemu/option.h"
37#include "qapi/error.h"
38
39static const TypeInfo accel_type = {
40 .name = TYPE_ACCEL,
41 .parent = TYPE_OBJECT,
42 .class_size = sizeof(AccelClass),
43 .instance_size = sizeof(AccelState),
44};
45
46
47static AccelClass *accel_find(const char *opt_name)
48{
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;
53}
54
55static int accel_init_machine(AccelClass *acc, MachineState *ms)
56{
57 ObjectClass *oc = OBJECT_CLASS(acc);
58 const char *cname = object_class_get_name(oc);
59 AccelState *accel = ACCEL(object_new(cname));
60 int ret;
61 ms->accelerator = accel;
62 *(acc->allowed) = true;
63 ret = acc->init_machine(ms);
64 if (ret < 0) {
65 ms->accelerator = NULL;
66 *(acc->allowed) = false;
67 object_unref(OBJECT(accel));
68 } else {
69 object_set_accelerator_compat_props(acc->compat_props);
70 }
71 return ret;
72}
73
74void configure_accelerator(MachineState *ms, const char *progname)
75{
76 const char *accel;
77 char **accel_list, **tmp;
78 int ret;
79 bool accel_initialised = false;
80 bool init_failed = false;
81 AccelClass *acc = NULL;
82
83 accel = qemu_opt_get(qemu_get_machine_opts(), "accel");
84 if (accel == NULL) {
85
86 int pnlen = strlen(progname);
87 if (pnlen >= 3 && g_str_equal(&progname[pnlen - 3], "kvm")) {
88
89 accel = "kvm:tcg";
90 } else {
91#if defined(CONFIG_TCG)
92 accel = "tcg";
93#elif defined(CONFIG_KVM)
94 accel = "kvm";
95#else
96 error_report("No accelerator selected and"
97 " no default accelerator available");
98 exit(1);
99#endif
100 }
101 }
102
103 accel_list = g_strsplit(accel, ":", 0);
104
105 for (tmp = accel_list; !accel_initialised && tmp && *tmp; tmp++) {
106 acc = accel_find(*tmp);
107 if (!acc) {
108 continue;
109 }
110 ret = accel_init_machine(acc, ms);
111 if (ret < 0) {
112 init_failed = true;
113 error_report("failed to initialize %s: %s",
114 acc->name, strerror(-ret));
115 } else {
116 accel_initialised = true;
117 }
118 }
119 g_strfreev(accel_list);
120
121 if (!accel_initialised) {
122 if (!init_failed) {
123 error_report("-machine accel=%s: No accelerator found", accel);
124 }
125 exit(1);
126 }
127
128 if (init_failed) {
129 error_report("Back to %s accelerator", acc->name);
130 }
131}
132
133void accel_setup_post(MachineState *ms)
134{
135 AccelState *accel = ms->accelerator;
136 AccelClass *acc = ACCEL_GET_CLASS(accel);
137 if (acc->setup_post) {
138 acc->setup_post(ms, accel);
139 }
140}
141
142static void register_accel_types(void)
143{
144 type_register_static(&accel_type);
145}
146
147type_init(register_accel_types);
148