1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
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
38static const TypeInfo accel_type = {
39 .name = TYPE_ACCEL,
40 .parent = TYPE_OBJECT,
41 .class_size = sizeof(AccelClass),
42 .instance_size = sizeof(AccelState),
43};
44
45
46static AccelClass *accel_find(const char *opt_name)
47{
48 char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
49 AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name));
50 g_free(class_name);
51 return ac;
52}
53
54static int accel_init_machine(AccelClass *acc, MachineState *ms)
55{
56 ObjectClass *oc = OBJECT_CLASS(acc);
57 const char *cname = object_class_get_name(oc);
58 AccelState *accel = ACCEL(object_new(cname));
59 int ret;
60 ms->accelerator = accel;
61 *(acc->allowed) = true;
62 ret = acc->init_machine(ms);
63 if (ret < 0) {
64 ms->accelerator = NULL;
65 *(acc->allowed) = false;
66 object_unref(OBJECT(accel));
67 }
68 return ret;
69}
70
71void configure_accelerator(MachineState *ms)
72{
73 const char *accel;
74 char **accel_list, **tmp;
75 int ret;
76 bool accel_initialised = false;
77 bool init_failed = false;
78 AccelClass *acc = NULL;
79
80 accel = qemu_opt_get(qemu_get_machine_opts(), "accel");
81 if (accel == NULL) {
82
83 accel = "tcg";
84 }
85
86 accel_list = g_strsplit(accel, ":", 0);
87
88 for (tmp = accel_list; !accel_initialised && tmp && *tmp; tmp++) {
89 acc = accel_find(*tmp);
90 if (!acc) {
91 continue;
92 }
93 if (acc->available && !acc->available()) {
94 printf("%s not supported for this target\n",
95 acc->name);
96 continue;
97 }
98 ret = accel_init_machine(acc, ms);
99 if (ret < 0) {
100 init_failed = true;
101 error_report("failed to initialize %s: %s",
102 acc->name, strerror(-ret));
103 } else {
104 accel_initialised = true;
105 }
106 }
107 g_strfreev(accel_list);
108
109 if (!accel_initialised) {
110 if (!init_failed) {
111 error_report("-machine accel=%s: No accelerator found", accel);
112 }
113 exit(1);
114 }
115
116 if (init_failed) {
117 error_report("Back to %s accelerator", acc->name);
118 }
119}
120
121void accel_register_compat_props(AccelState *accel)
122{
123 AccelClass *class = ACCEL_GET_CLASS(accel);
124 register_compat_props_array(class->global_props);
125}
126
127void accel_setup_post(MachineState *ms)
128{
129 AccelState *accel = ms->accelerator;
130 AccelClass *acc = ACCEL_GET_CLASS(accel);
131 if (acc->setup_post) {
132 acc->setup_post(ms, accel);
133 }
134}
135
136static void register_accel_types(void)
137{
138 type_register_static(&accel_type);
139}
140
141type_init(register_accel_types);
142