From 8f0605cc9caacbcc647a6df9ae541ed2da4b9bb0 Mon Sep 17 00:00:00 2001 From: Stefan Berger Date: Thu, 28 Mar 2013 07:26:21 -0400 Subject: QOM-ify the TPM support QOM-ified the TPM support with much code borrowed from the rng implementation. All other TPM related code moves will be provided in a subsequent patch. Signed-off-by: Stefan Berger Message-id: 1364469981.24703.1.camel@d941e-10 Signed-off-by: Anthony Liguori --- backends/Makefile.objs | 2 + backends/tpm.c | 154 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 156 insertions(+) create mode 100644 backends/tpm.c (limited to 'backends') diff --git a/backends/Makefile.objs b/backends/Makefile.objs index 464bc3e220..42557d54ea 100644 --- a/backends/Makefile.objs +++ b/backends/Makefile.objs @@ -4,3 +4,5 @@ common-obj-$(CONFIG_POSIX) += rng-random.o common-obj-y += msmouse.o common-obj-$(CONFIG_BRLAPI) += baum.o $(obj)/baum.o: QEMU_CFLAGS += $(SDL_CFLAGS) + +common-obj-$(CONFIG_TPM) += tpm.o diff --git a/backends/tpm.c b/backends/tpm.c new file mode 100644 index 0000000000..28148c23cf --- /dev/null +++ b/backends/tpm.c @@ -0,0 +1,154 @@ +/* + * QEMU TPM Backend + * + * Copyright IBM, Corp. 2013 + * + * Authors: + * Stefan Berger + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + * Based on backends/rng.c by Anthony Liguori + */ + +#include "backends/tpm.h" +#include "tpm/tpm_int.h" +#include "qapi/qmp/qerror.h" + +enum TpmType tpm_backend_get_type(TPMBackend *s) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + return k->ops->type; +} + +const char *tpm_backend_get_desc(TPMBackend *s) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + return k->ops->desc(); +} + +void tpm_backend_destroy(TPMBackend *s) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + return k->ops->destroy(s); +} + +int tpm_backend_init(TPMBackend *s, TPMState *state, + TPMRecvDataCB *datacb) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + return k->ops->init(s, state, datacb); +} + +int tpm_backend_startup_tpm(TPMBackend *s) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + return k->ops->startup_tpm(s); +} + +bool tpm_backend_had_startup_error(TPMBackend *s) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + return k->ops->had_startup_error(s); +} + +size_t tpm_backend_realloc_buffer(TPMBackend *s, TPMSizedBuffer *sb) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + return k->ops->realloc_buffer(sb); +} + +void tpm_backend_deliver_request(TPMBackend *s) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + k->ops->deliver_request(s); +} + +void tpm_backend_reset(TPMBackend *s) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + k->ops->reset(s); +} + +void tpm_backend_cancel_cmd(TPMBackend *s) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + k->ops->cancel_cmd(s); +} + +bool tpm_backend_get_tpm_established_flag(TPMBackend *s) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + return k->ops->get_tpm_established_flag(s); +} + +static bool tpm_backend_prop_get_opened(Object *obj, Error **errp) +{ + TPMBackend *s = TPM_BACKEND(obj); + + return s->opened; +} + +void tpm_backend_open(TPMBackend *s, Error **errp) +{ + object_property_set_bool(OBJECT(s), true, "opened", errp); +} + +static void tpm_backend_prop_set_opened(Object *obj, bool value, Error **errp) +{ + TPMBackend *s = TPM_BACKEND(obj); + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + if (value == s->opened) { + return; + } + + if (!value && s->opened) { + error_set(errp, QERR_PERMISSION_DENIED); + return; + } + + if (k->opened) { + k->opened(s, errp); + } + + if (!error_is_set(errp)) { + s->opened = value; + } +} + +static void tpm_backend_instance_init(Object *obj) +{ + object_property_add_bool(obj, "opened", + tpm_backend_prop_get_opened, + tpm_backend_prop_set_opened, + NULL); +} + +static const TypeInfo tpm_backend_info = { + .name = TYPE_TPM_BACKEND, + .parent = TYPE_OBJECT, + .instance_size = sizeof(TPMBackend), + .instance_init = tpm_backend_instance_init, + .class_size = sizeof(TPMBackendClass), + .abstract = true, +}; + +static void register_types(void) +{ + type_register_static(&tpm_backend_info); +} + +type_init(register_types); -- cgit v1.2.1