target-arm: Don't define any MMU_MODE*_SUFFIXes
[qemu/ar7.git] / backends / tpm.c
blob01860c4acb255cbabbe7a4e9ed29837574b60a48
1 /*
2 * QEMU TPM Backend
4 * Copyright IBM, Corp. 2013
6 * Authors:
7 * Stefan Berger <stefanb@us.ibm.com>
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
12 * Based on backends/rng.c by Anthony Liguori
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"
21 enum TpmType tpm_backend_get_type(TPMBackend *s)
23 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
25 return k->ops->type;
28 const char *tpm_backend_get_desc(TPMBackend *s)
30 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
32 return k->ops->desc();
35 void tpm_backend_destroy(TPMBackend *s)
37 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
39 return k->ops->destroy(s);
42 int tpm_backend_init(TPMBackend *s, TPMState *state,
43 TPMRecvDataCB *datacb)
45 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
47 return k->ops->init(s, state, datacb);
50 int tpm_backend_startup_tpm(TPMBackend *s)
52 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
54 return k->ops->startup_tpm(s);
57 bool tpm_backend_had_startup_error(TPMBackend *s)
59 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
61 return k->ops->had_startup_error(s);
64 size_t tpm_backend_realloc_buffer(TPMBackend *s, TPMSizedBuffer *sb)
66 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
68 return k->ops->realloc_buffer(sb);
71 void tpm_backend_deliver_request(TPMBackend *s)
73 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
75 k->ops->deliver_request(s);
78 void tpm_backend_reset(TPMBackend *s)
80 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
82 k->ops->reset(s);
85 void tpm_backend_cancel_cmd(TPMBackend *s)
87 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
89 k->ops->cancel_cmd(s);
92 bool tpm_backend_get_tpm_established_flag(TPMBackend *s)
94 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
96 return k->ops->get_tpm_established_flag(s);
99 static bool tpm_backend_prop_get_opened(Object *obj, Error **errp)
101 TPMBackend *s = TPM_BACKEND(obj);
103 return s->opened;
106 void tpm_backend_open(TPMBackend *s, Error **errp)
108 object_property_set_bool(OBJECT(s), true, "opened", errp);
111 static void tpm_backend_prop_set_opened(Object *obj, bool value, Error **errp)
113 TPMBackend *s = TPM_BACKEND(obj);
114 TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
115 Error *local_err = NULL;
117 if (value == s->opened) {
118 return;
121 if (!value && s->opened) {
122 error_set(errp, QERR_PERMISSION_DENIED);
123 return;
126 if (k->opened) {
127 k->opened(s, &local_err);
128 if (local_err) {
129 error_propagate(errp, local_err);
130 return;
134 s->opened = true;
137 static void tpm_backend_instance_init(Object *obj)
139 object_property_add_bool(obj, "opened",
140 tpm_backend_prop_get_opened,
141 tpm_backend_prop_set_opened,
142 NULL);
145 void tpm_backend_thread_deliver_request(TPMBackendThread *tbt)
147 g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_PROCESS_CMD, NULL);
150 void tpm_backend_thread_create(TPMBackendThread *tbt,
151 GFunc func, gpointer user_data)
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);
159 void tpm_backend_thread_end(TPMBackendThread *tbt)
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;
168 void tpm_backend_thread_tpm_reset(TPMBackendThread *tbt,
169 GFunc func, gpointer user_data)
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);
179 static 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,
188 static void register_types(void)
190 type_register_static(&tpm_backend_info);
193 type_init(register_types);