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26#include "qemu/osdep.h"
27#include "sysemu/accel.h"
28#include "hw/boards.h"
29#include "qemu-common.h"
30#include "sysemu/arch_init.h"
31#include "sysemu/sysemu.h"
32#include "sysemu/kvm.h"
33#include "sysemu/qtest.h"
34#include "hw/xen/xen.h"
35#include "qom/object.h"
36#include "hw/boards.h"
37
38int tcg_tb_size;
39static bool tcg_allowed = true;
40
41static int tcg_init(MachineState *ms)
42{
43 tcg_exec_init(tcg_tb_size * 1024 * 1024);
44 return 0;
45}
46
47static const TypeInfo accel_type = {
48 .name = TYPE_ACCEL,
49 .parent = TYPE_OBJECT,
50 .class_size = sizeof(AccelClass),
51 .instance_size = sizeof(AccelState),
52};
53
54
55static AccelClass *accel_find(const char *opt_name)
56{
57 char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
58 AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name));
59 g_free(class_name);
60 return ac;
61}
62
63static int accel_init_machine(AccelClass *acc, MachineState *ms)
64{
65 ObjectClass *oc = OBJECT_CLASS(acc);
66 const char *cname = object_class_get_name(oc);
67 AccelState *accel = ACCEL(object_new(cname));
68 int ret;
69 ms->accelerator = accel;
70 *(acc->allowed) = true;
71 ret = acc->init_machine(ms);
72 if (ret < 0) {
73 ms->accelerator = NULL;
74 *(acc->allowed) = false;
75 object_unref(OBJECT(accel));
76 }
77 return ret;
78}
79
80void configure_accelerator(MachineState *ms)
81{
82 const char *p;
83 char buf[10];
84 int ret;
85 bool accel_initialised = false;
86 bool init_failed = false;
87 AccelClass *acc = NULL;
88
89 p = qemu_opt_get(qemu_get_machine_opts(), "accel");
90 if (p == NULL) {
91
92 p = "tcg";
93 }
94
95 while (!accel_initialised && *p != '\0') {
96 if (*p == ':') {
97 p++;
98 }
99 p = get_opt_name(buf, sizeof(buf), p, ':');
100 acc = accel_find(buf);
101 if (!acc) {
102 fprintf(stderr, "\"%s\" accelerator not found.\n", buf);
103 continue;
104 }
105 if (acc->available && !acc->available()) {
106 printf("%s not supported for this target\n",
107 acc->name);
108 continue;
109 }
110 ret = accel_init_machine(acc, ms);
111 if (ret < 0) {
112 init_failed = true;
113 fprintf(stderr, "failed to initialize %s: %s\n",
114 acc->name,
115 strerror(-ret));
116 } else {
117 accel_initialised = true;
118 }
119 }
120
121 if (!accel_initialised) {
122 if (!init_failed) {
123 fprintf(stderr, "No accelerator found!\n");
124 }
125 exit(1);
126 }
127
128 if (init_failed) {
129 fprintf(stderr, "Back to %s accelerator.\n", acc->name);
130 }
131}
132
133
134static void tcg_accel_class_init(ObjectClass *oc, void *data)
135{
136 AccelClass *ac = ACCEL_CLASS(oc);
137 ac->name = "tcg";
138 ac->init_machine = tcg_init;
139 ac->allowed = &tcg_allowed;
140}
141
142#define TYPE_TCG_ACCEL ACCEL_CLASS_NAME("tcg")
143
144static const TypeInfo tcg_accel_type = {
145 .name = TYPE_TCG_ACCEL,
146 .parent = TYPE_ACCEL,
147 .class_init = tcg_accel_class_init,
148};
149
150static void register_accel_types(void)
151{
152 type_register_static(&accel_type);
153 type_register_static(&tcg_accel_type);
154}
155
156type_init(register_accel_types);
157