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15#include "sysemu/tpm_backend.h"
16#include "qapi/qmp/qerror.h"
17#include "sysemu/tpm.h"
18#include "qemu/thread.h"
19#include "sysemu/tpm_backend_int.h"
20
21enum TpmType tpm_backend_get_type(TPMBackend *s)
22{
23 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
24
25 return k->ops->type;
26}
27
28const char *tpm_backend_get_desc(TPMBackend *s)
29{
30 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
31
32 return k->ops->desc();
33}
34
35void tpm_backend_destroy(TPMBackend *s)
36{
37 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
38
39 k->ops->destroy(s);
40}
41
42int tpm_backend_init(TPMBackend *s, TPMState *state,
43 TPMRecvDataCB *datacb)
44{
45 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
46
47 return k->ops->init(s, state, datacb);
48}
49
50int tpm_backend_startup_tpm(TPMBackend *s)
51{
52 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
53
54 return k->ops->startup_tpm(s);
55}
56
57bool tpm_backend_had_startup_error(TPMBackend *s)
58{
59 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
60
61 return k->ops->had_startup_error(s);
62}
63
64size_t tpm_backend_realloc_buffer(TPMBackend *s, TPMSizedBuffer *sb)
65{
66 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
67
68 return k->ops->realloc_buffer(sb);
69}
70
71void tpm_backend_deliver_request(TPMBackend *s)
72{
73 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
74
75 k->ops->deliver_request(s);
76}
77
78void tpm_backend_reset(TPMBackend *s)
79{
80 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
81
82 k->ops->reset(s);
83}
84
85void tpm_backend_cancel_cmd(TPMBackend *s)
86{
87 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
88
89 k->ops->cancel_cmd(s);
90}
91
92bool tpm_backend_get_tpm_established_flag(TPMBackend *s)
93{
94 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
95
96 return k->ops->get_tpm_established_flag(s);
97}
98
99int tpm_backend_reset_tpm_established_flag(TPMBackend *s, uint8_t locty)
100{
101 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
102
103 return k->ops->reset_tpm_established_flag(s, locty);
104}
105
106TPMVersion tpm_backend_get_tpm_version(TPMBackend *s)
107{
108 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
109
110 return k->ops->get_tpm_version(s);
111}
112
113static bool tpm_backend_prop_get_opened(Object *obj, Error **errp)
114{
115 TPMBackend *s = TPM_BACKEND(obj);
116
117 return s->opened;
118}
119
120void tpm_backend_open(TPMBackend *s, Error **errp)
121{
122 object_property_set_bool(OBJECT(s), true, "opened", errp);
123}
124
125static void tpm_backend_prop_set_opened(Object *obj, bool value, Error **errp)
126{
127 TPMBackend *s = TPM_BACKEND(obj);
128 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
129 Error *local_err = NULL;
130
131 if (value == s->opened) {
132 return;
133 }
134
135 if (!value && s->opened) {
136 error_setg(errp, QERR_PERMISSION_DENIED);
137 return;
138 }
139
140 if (k->opened) {
141 k->opened(s, &local_err);
142 if (local_err) {
143 error_propagate(errp, local_err);
144 return;
145 }
146 }
147
148 s->opened = true;
149}
150
151static void tpm_backend_instance_init(Object *obj)
152{
153 object_property_add_bool(obj, "opened",
154 tpm_backend_prop_get_opened,
155 tpm_backend_prop_set_opened,
156 NULL);
157}
158
159void tpm_backend_thread_deliver_request(TPMBackendThread *tbt)
160{
161 g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_PROCESS_CMD, NULL);
162}
163
164void tpm_backend_thread_create(TPMBackendThread *tbt,
165 GFunc func, gpointer user_data)
166{
167 if (!tbt->pool) {
168 tbt->pool = g_thread_pool_new(func, user_data, 1, TRUE, NULL);
169 g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_INIT, NULL);
170 }
171}
172
173void tpm_backend_thread_end(TPMBackendThread *tbt)
174{
175 if (tbt->pool) {
176 g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_END, NULL);
177 g_thread_pool_free(tbt->pool, FALSE, TRUE);
178 tbt->pool = NULL;
179 }
180}
181
182static const TypeInfo tpm_backend_info = {
183 .name = TYPE_TPM_BACKEND,
184 .parent = TYPE_OBJECT,
185 .instance_size = sizeof(TPMBackend),
186 .instance_init = tpm_backend_instance_init,
187 .class_size = sizeof(TPMBackendClass),
188 .abstract = true,
189};
190
191static void register_types(void)
192{
193 type_register_static(&tpm_backend_info);
194}
195
196type_init(register_types);
197
