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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 return 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
99static bool tpm_backend_prop_get_opened(Object *obj, Error **errp)
100{
101 TPMBackend *s = TPM_BACKEND(obj);
102
103 return s->opened;
104}
105
106void tpm_backend_open(TPMBackend *s, Error **errp)
107{
108 object_property_set_bool(OBJECT(s), true, "opened", errp);
109}
110
111static void tpm_backend_prop_set_opened(Object *obj, bool value, Error **errp)
112{
113 TPMBackend *s = TPM_BACKEND(obj);
114 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
115 Error *local_err = NULL;
116
117 if (value == s->opened) {
118 return;
119 }
120
121 if (!value && s->opened) {
122 error_set(errp, QERR_PERMISSION_DENIED);
123 return;
124 }
125
126 if (k->opened) {
127 k->opened(s, &local_err);
128 if (local_err) {
129 error_propagate(errp, local_err);
130 return;
131 }
132 }
133
134 s->opened = true;
135}
136
137static void tpm_backend_instance_init(Object *obj)
138{
139 object_property_add_bool(obj, "opened",
140 tpm_backend_prop_get_opened,
141 tpm_backend_prop_set_opened,
142 NULL);
143}
144
145void tpm_backend_thread_deliver_request(TPMBackendThread *tbt)
146{
147 g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_PROCESS_CMD, NULL);
148}
149
150void tpm_backend_thread_create(TPMBackendThread *tbt,
151 GFunc func, gpointer user_data)
152{
153 if (!tbt->pool) {
154 tbt->pool = g_thread_pool_new(func, user_data, 1, TRUE, NULL);
155 g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_INIT, NULL);
156 }
157}
158
159void tpm_backend_thread_end(TPMBackendThread *tbt)
160{
161 if (tbt->pool) {
162 g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_END, NULL);
163 g_thread_pool_free(tbt->pool, FALSE, TRUE);
164 tbt->pool = NULL;
165 }
166}
167
168void tpm_backend_thread_tpm_reset(TPMBackendThread *tbt,
169 GFunc func, gpointer user_data)
170{
171 if (!tbt->pool) {
172 tpm_backend_thread_create(tbt, func, user_data);
173 } else {
174 g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_TPM_RESET,
175 NULL);
176 }
177}
178
179static const TypeInfo tpm_backend_info = {
180 .name = TYPE_TPM_BACKEND,
181 .parent = TYPE_OBJECT,
182 .instance_size = sizeof(TPMBackend),
183 .instance_init = tpm_backend_instance_init,
184 .class_size = sizeof(TPMBackendClass),
185 .abstract = true,
186};
187
188static void register_types(void)
189{
190 type_register_static(&tpm_backend_info);
191}
192
193type_init(register_types);
194
