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https://github.com/xemu-project/xemu.git
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dccfcd0e5f
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
191 lines
4.3 KiB
C
191 lines
4.3 KiB
C
/*
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* QEMU TPM Backend
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*
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* Copyright IBM, Corp. 2013
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*
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* Authors:
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* Stefan Berger <stefanb@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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* Based on backends/rng.c by Anthony Liguori
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*/
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#include "sysemu/tpm_backend.h"
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#include "qapi/qmp/qerror.h"
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#include "sysemu/tpm.h"
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#include "qemu/thread.h"
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#include "sysemu/tpm_backend_int.h"
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enum TpmType tpm_backend_get_type(TPMBackend *s)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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return k->ops->type;
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}
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const char *tpm_backend_get_desc(TPMBackend *s)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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return k->ops->desc();
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}
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void tpm_backend_destroy(TPMBackend *s)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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return k->ops->destroy(s);
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}
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int tpm_backend_init(TPMBackend *s, TPMState *state,
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TPMRecvDataCB *datacb)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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return k->ops->init(s, state, datacb);
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}
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int tpm_backend_startup_tpm(TPMBackend *s)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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return k->ops->startup_tpm(s);
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}
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bool tpm_backend_had_startup_error(TPMBackend *s)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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return k->ops->had_startup_error(s);
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}
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size_t tpm_backend_realloc_buffer(TPMBackend *s, TPMSizedBuffer *sb)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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return k->ops->realloc_buffer(sb);
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}
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void tpm_backend_deliver_request(TPMBackend *s)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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k->ops->deliver_request(s);
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}
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void tpm_backend_reset(TPMBackend *s)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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k->ops->reset(s);
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}
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void tpm_backend_cancel_cmd(TPMBackend *s)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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k->ops->cancel_cmd(s);
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}
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bool tpm_backend_get_tpm_established_flag(TPMBackend *s)
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{
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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return k->ops->get_tpm_established_flag(s);
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}
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static bool tpm_backend_prop_get_opened(Object *obj, Error **errp)
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{
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TPMBackend *s = TPM_BACKEND(obj);
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return s->opened;
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}
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void tpm_backend_open(TPMBackend *s, Error **errp)
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{
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object_property_set_bool(OBJECT(s), true, "opened", errp);
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}
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static void tpm_backend_prop_set_opened(Object *obj, bool value, Error **errp)
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{
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TPMBackend *s = TPM_BACKEND(obj);
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TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s);
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if (value == s->opened) {
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return;
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}
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if (!value && s->opened) {
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error_set(errp, QERR_PERMISSION_DENIED);
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return;
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}
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if (k->opened) {
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k->opened(s, errp);
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}
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if (!error_is_set(errp)) {
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s->opened = value;
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}
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}
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static void tpm_backend_instance_init(Object *obj)
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{
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object_property_add_bool(obj, "opened",
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tpm_backend_prop_get_opened,
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tpm_backend_prop_set_opened,
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NULL);
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}
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void tpm_backend_thread_deliver_request(TPMBackendThread *tbt)
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{
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g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_PROCESS_CMD, NULL);
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}
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void tpm_backend_thread_create(TPMBackendThread *tbt,
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GFunc func, gpointer user_data)
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{
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if (!tbt->pool) {
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tbt->pool = g_thread_pool_new(func, user_data, 1, TRUE, NULL);
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g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_INIT, NULL);
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}
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}
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void tpm_backend_thread_end(TPMBackendThread *tbt)
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{
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if (tbt->pool) {
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g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_END, NULL);
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g_thread_pool_free(tbt->pool, FALSE, TRUE);
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tbt->pool = NULL;
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}
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}
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void tpm_backend_thread_tpm_reset(TPMBackendThread *tbt,
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GFunc func, gpointer user_data)
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{
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if (!tbt->pool) {
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tpm_backend_thread_create(tbt, func, user_data);
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} else {
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g_thread_pool_push(tbt->pool, (gpointer)TPM_BACKEND_CMD_TPM_RESET,
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NULL);
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}
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}
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static const TypeInfo tpm_backend_info = {
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.name = TYPE_TPM_BACKEND,
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.parent = TYPE_OBJECT,
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.instance_size = sizeof(TPMBackend),
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.instance_init = tpm_backend_instance_init,
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.class_size = sizeof(TPMBackendClass),
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.abstract = true,
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};
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static void register_types(void)
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{
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type_register_static(&tpm_backend_info);
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}
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type_init(register_types);
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