1 files changed, 94 insertions, 0 deletions
diff --git a/include/system/tpm.h b/include/system/tpm.h
new file mode 100644
index 0000000000..1ee568b3b6
--- /dev/null
+++ b/include/system/tpm.h
@@ -0,0 +1,94 @@
+/*
+ * 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 "qapi/qapi-types-tpm.h"
+#include "qom/object.h"
+
+#ifdef CONFIG_TPM
+
+int tpm_config_parse(QemuOptsList *opts_list, const char *optstr);
+int tpm_init(void);
+void tpm_cleanup(void);
+
+typedef enum TPMVersion {
+    TPM_VERSION_UNSPEC = 0,
+    TPM_VERSION_1_2 = 1,
+    TPM_VERSION_2_0 = 2,
+} TPMVersion;
+
+#define TYPE_TPM_IF "tpm-if"
+typedef struct TPMIfClass TPMIfClass;
+DECLARE_CLASS_CHECKERS(TPMIfClass, TPM_IF,
+                       TYPE_TPM_IF)
+#define TPM_IF(obj)                             \
+    INTERFACE_CHECK(TPMIf, (obj), TYPE_TPM_IF)
+
+typedef struct TPMIf TPMIf;
+
+struct TPMIfClass {
+    InterfaceClass parent_class;
+
+    enum TpmModel model;
+    void (*request_completed)(TPMIf *obj, int ret);
+    enum TPMVersion (*get_version)(TPMIf *obj);
+};
+
+#define TYPE_TPM_TIS_ISA            "tpm-tis"
+#define TYPE_TPM_TIS_SYSBUS         "tpm-tis-device"
+#define TYPE_TPM_CRB                "tpm-crb"
+#define TYPE_TPM_SPAPR              "tpm-spapr"
+#define TYPE_TPM_TIS_I2C            "tpm-tis-i2c"
+
+#define TPM_IS_TIS_ISA(chr)                         \
+    object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS_ISA)
+#define TPM_IS_TIS_SYSBUS(chr)                      \
+    object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS_SYSBUS)
+#define TPM_IS_CRB(chr)                             \
+    object_dynamic_cast(OBJECT(chr), TYPE_TPM_CRB)
+#define TPM_IS_SPAPR(chr)                           \
+    object_dynamic_cast(OBJECT(chr), TYPE_TPM_SPAPR)
+#define TPM_IS_TIS_I2C(chr)                      \
+    object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS_I2C)
+
+/* returns NULL unless there is exactly one TPM device */
+static inline TPMIf *tpm_find(void)
+{
+    Object *obj = object_resolve_path_type("", TYPE_TPM_IF, NULL);
+
+    return TPM_IF(obj);
+}
+
+static inline TPMVersion tpm_get_version(TPMIf *ti)
+{
+    if (!ti) {
+        return TPM_VERSION_UNSPEC;
+    }
+
+    return TPM_IF_GET_CLASS(ti)->get_version(ti);
+}
+
+#else /* CONFIG_TPM */
+
+#define tpm_init()  (0)
+#define tpm_cleanup()
+
+/* needed for an alignment check in non-tpm code */
+static inline Object *TPM_IS_CRB(Object *obj)
+{
+     return NULL;
+}
+
+#endif /* CONFIG_TPM */
+
+#endif /* QEMU_TPM_H */