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authorStefan Berger <stefanb@linux.vnet.ibm.com>2013-03-28 07:26:21 -0400
committerAnthony Liguori <aliguori@us.ibm.com>2013-04-02 08:15:18 -0500
commit8f0605cc9caacbcc647a6df9ae541ed2da4b9bb0 (patch)
tree384017221d7b4dbf02fc246e314e0a89dcc32ca0 /include
parent684a096eafbe37ab6c9a1fdb5e0185f04098b166 (diff)
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 <stefanb@linux.vnet.ibm.com> Message-id: 1364469981.24703.1.camel@d941e-10 Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'include')
-rw-r--r--include/backends/tpm.h170
-rw-r--r--include/tpm/tpm.h4
2 files changed, 174 insertions, 0 deletions
diff --git a/include/backends/tpm.h b/include/backends/tpm.h
new file mode 100644
index 0000000000..9e93cc5060
--- /dev/null
+++ b/include/backends/tpm.h
@@ -0,0 +1,170 @@
+/*
+ * QEMU TPM Backend
+ *
+ * Copyright IBM, Corp. 2013
+ *
+ * Authors:
+ * Stefan Berger <stefanb@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef _QEMU_TPM_H
+#define _QEMU_TPM_H
+
+#include "qom/object.h"
+#include "qemu-common.h"
+#include "qapi/error.h"
+#include "qapi-types.h"
+#include "qemu/option.h"
+#include "tpm/tpm.h"
+
+#define TYPE_TPM_BACKEND "tpm-backend"
+#define TPM_BACKEND(obj) \
+ OBJECT_CHECK(TPMBackend, (obj), TYPE_TPM_BACKEND)
+#define TPM_BACKEND_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(TPMBackendClass, (obj), TYPE_TPM_BACKEND)
+#define TPM_BACKEND_CLASS(klass) \
+ OBJECT_CLASS_CHECK(TPMBackendClass, (klass), TYPE_TPM_BACKEND)
+
+typedef struct TPMBackendClass TPMBackendClass;
+typedef struct TPMBackend TPMBackend;
+
+typedef struct TPMDriverOps TPMDriverOps;
+
+struct TPMBackendClass {
+ ObjectClass parent_class;
+
+ const TPMDriverOps *ops;
+
+ void (*opened)(TPMBackend *s, Error **errp);
+};
+
+struct TPMBackend {
+ Object parent;
+
+ /*< protected >*/
+ bool opened;
+
+ char *id;
+ enum TpmModel fe_model;
+ char *path;
+ char *cancel_path;
+ const TPMDriverOps *ops;
+
+ QLIST_ENTRY(TPMBackend) list;
+};
+
+
+/**
+ * tpm_backend_get_type:
+ * @s: the backend
+ *
+ * Returns the TpmType of the backend.
+ */
+enum TpmType tpm_backend_get_type(TPMBackend *s);
+
+/**
+ * tpm_backend_get_desc:
+ * @s: the backend
+ *
+ * Returns a human readable description of the backend.
+ */
+const char *tpm_backend_get_desc(TPMBackend *s);
+
+/**
+ * tpm_backend_destroy:
+ * @s: the backend to destroy
+ */
+void tpm_backend_destroy(TPMBackend *s);
+
+/**
+ * tpm_backend_init:
+ * @s: the backend to initialized
+ * @state: TPMState
+ * @datacb: callback for sending data to frontend
+ *
+ * Initialize the backend with the given variables.
+ *
+ * Returns 0 on success.
+ */
+int tpm_backend_init(TPMBackend *s, TPMState *state,
+ TPMRecvDataCB *datacb);
+
+/**
+ * tpm_backend_startup_tpm:
+ * @s: the backend whose TPM support is to be started
+ *
+ * Returns 0 on success.
+ */
+int tpm_backend_startup_tpm(TPMBackend *s);
+
+/**
+ * tpm_backend_had_startup_error:
+ * @s: the backend to query for a statup error
+ *
+ * Check whether the backend had an error during startup. Returns
+ * false if no error occurred and the backend can be used, true
+ * otherwise.
+ */
+bool tpm_backend_had_startup_error(TPMBackend *s);
+
+/**
+ * tpm_backend_realloc_buffer:
+ * @s: the backend
+ * @sb: the TPMSizedBuffer to re-allocated to the size suitable for the
+ * backend.
+ *
+ * This function returns the size of the allocated buffer
+ */
+size_t tpm_backend_realloc_buffer(TPMBackend *s, TPMSizedBuffer *sb);
+
+/**
+ * tpm_backend_deliver_request:
+ * @s: the backend to send the request to
+ *
+ * Send a request to the backend. The backend will then send the request
+ * to the TPM implementation.
+ */
+void tpm_backend_deliver_request(TPMBackend *s);
+
+/**
+ * tpm_backend_reset:
+ * @s: the backend to reset
+ *
+ * Reset the backend into a well defined state with all previous errors
+ * reset.
+ */
+void tpm_backend_reset(TPMBackend *s);
+
+/**
+ * tpm_backend_cancel_cmd:
+ * @s: the backend
+ *
+ * Cancel any ongoing command being processed by the TPM implementation
+ * on behalf of the QEMU guest.
+ */
+void tpm_backend_cancel_cmd(TPMBackend *s);
+
+/**
+ * tpm_backend_get_tpm_established_flag:
+ * @s: the backend
+ *
+ * Get the TPM establishment flag. This function may be called very
+ * frequently by the frontend since for example in the TIS implementation
+ * this flag is part of a register.
+ */
+bool tpm_backend_get_tpm_established_flag(TPMBackend *s);
+
+/**
+ * tpm_backend_open:
+ * @s: the backend to open
+ * @errp: a pointer to return the #Error object if an error occurs.
+ *
+ * This function will open the backend if it is not already open. Calling this
+ * function on an already opened backend will not result in an error.
+ */
+void tpm_backend_open(TPMBackend *s, Error **errp);
+
+#endif
diff --git a/include/tpm/tpm.h b/include/tpm/tpm.h
index cc8f20e69e..2d457c4439 100644
--- a/include/tpm/tpm.h
+++ b/include/tpm/tpm.h
@@ -14,6 +14,10 @@
#include "qemu/option.h"
+typedef struct TPMState TPMState;
+typedef struct TPMSizedBuffer TPMSizedBuffer;
+typedef void (TPMRecvDataCB)(TPMState *, uint8_t locty);
+
int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
int tpm_init(void);
void tpm_cleanup(void);