tpm: reorganize headers and split hardware part

The TPM subsystem does not have a full front-end/back-end separation.
The sole available backend, tpm_passthrough, depends on the data
structures of the sole available frontend, tpm_tis.

However, we can at least try to split the user interface (tpm.c) from the
implementation (hw/tpm).  The patches makes tpm.c not include tpm_int.h,
which is shared between tpm_tis.c and tpm_passthrough.c; instead it
moves more stuff to tpm_backend.h.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2 files changed, 68 insertions, 0 deletions

diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h
new file mode 100644
index 0000000000..13febddbee
--- /dev/null
+++ b/include/sysemu/tpm.h
@@ -0,0 +1,23 @@
+/*
+ * Public TPM functions
+ *
+ * Copyright (C) 2011-2013 IBM Corporation
+ *
+ * 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 "qemu/option.h"
+
+typedef struct TPMState TPMState;
+
+int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
+int tpm_init(void);
+void tpm_cleanup(void);
+
+#endif /* QEMU_TPM_H */
diff --git a/include/sysemu/tpm_backend_int.h b/include/sysemu/tpm_backend_int.h
new file mode 100644
index 0000000000..05d94d0f5b
--- /dev/null
+++ b/include/sysemu/tpm_backend_int.h
@@ -0,0 +1,45 @@
+/*
+ *  common TPM backend driver functions
+ *
+ *  Copyright (c) 2012-2013 IBM Corporation
+ *  Authors:
+ *    Stefan Berger <stefanb@us.ibm.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>
+ */
+
+#ifndef TPM_TPM_BACKEND_H
+#define TPM_TPM_BACKEND_H
+
+#include <glib.h>
+
+typedef struct TPMBackendThread {
+    GThreadPool *pool;
+} TPMBackendThread;
+
+void tpm_backend_thread_deliver_request(TPMBackendThread *tbt);
+void tpm_backend_thread_create(TPMBackendThread *tbt,
+                               GFunc func, gpointer user_data);
+void tpm_backend_thread_end(TPMBackendThread *tbt);
+void tpm_backend_thread_tpm_reset(TPMBackendThread *tbt,
+                                  GFunc func, gpointer user_data);
+
+typedef enum TPMBackendCmd {
+    TPM_BACKEND_CMD_INIT = 1,
+    TPM_BACKEND_CMD_PROCESS_CMD,
+    TPM_BACKEND_CMD_END,
+    TPM_BACKEND_CMD_TPM_RESET,
+} TPMBackendCmd;
+
+#endif /* TPM_TPM_BACKEND_H */