include/sysemu/tpm.h

   1 /*
   2  * Public TPM functions
   3  *
   4  * Copyright (C) 2011-2013 IBM Corporation
   5  *
   6  * Authors:
   7  *  Stefan Berger    <stefanb@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12 #ifndef QEMU_TPM_H
  13 #define QEMU_TPM_H
  14
  15 #include "qapi/qapi-types-tpm.h"
  16 #include "qom/object.h"
  17
  18 int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
  19 int tpm_init(void);
  20 void tpm_cleanup(void);
  21
  22 typedef enum TPMVersion {
  23     TPM_VERSION_UNSPEC = 0,
  24     TPM_VERSION_1_2 = 1,
  25     TPM_VERSION_2_0 = 2,
  26 } TPMVersion;
  27
  28 #define TYPE_TPM_IF "tpm-if"
  29 typedef struct TPMIfClass TPMIfClass;
  30 #define TPM_IF_CLASS(klass)                                 \
  31     OBJECT_CLASS_CHECK(TPMIfClass, (klass), TYPE_TPM_IF)
  32 #define TPM_IF_GET_CLASS(obj)                           \
  33     OBJECT_GET_CLASS(TPMIfClass, (obj), TYPE_TPM_IF)
  34 #define TPM_IF(obj)                             \
  35     INTERFACE_CHECK(TPMIf, (obj), TYPE_TPM_IF)
  36
  37 typedef struct TPMIf TPMIf;
  38
  39 struct TPMIfClass {
  40     InterfaceClass parent_class;
  41
  42     enum TpmModel model;
  43     void (*request_completed)(TPMIf *obj, int ret);
  44     enum TPMVersion (*get_version)(TPMIf *obj);
  45 };
  46
  47 #define TYPE_TPM_TIS_ISA            "tpm-tis"
  48 #define TYPE_TPM_TIS_SYSBUS         "tpm-tis-device"
  49 #define TYPE_TPM_CRB                "tpm-crb"
  50 #define TYPE_TPM_SPAPR              "tpm-spapr"
  51
  52 #define TPM_IS_TIS_ISA(chr)                         \
  53     object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS_ISA)
  54 #define TPM_IS_TIS_SYSBUS(chr)                      \
  55     object_dynamic_cast(OBJECT(chr), TYPE_TPM_TIS_SYSBUS)
  56 #define TPM_IS_CRB(chr)                             \
  57     object_dynamic_cast(OBJECT(chr), TYPE_TPM_CRB)
  58 #define TPM_IS_SPAPR(chr)                           \
  59     object_dynamic_cast(OBJECT(chr), TYPE_TPM_SPAPR)
  60
  61 /* returns NULL unless there is exactly one TPM device */
  62 static inline TPMIf *tpm_find(void)
  63 {
  64     Object *obj = object_resolve_path_type("", TYPE_TPM_IF, NULL);
  65
  66     return TPM_IF(obj);
  67 }
  68
  69 static inline TPMVersion tpm_get_version(TPMIf *ti)
  70 {
  71     if (!ti) {
  72         return TPM_VERSION_UNSPEC;
  73     }
  74
  75     return TPM_IF_GET_CLASS(ti)->get_version(ti);
  76 }
  77
  78 #endif /* QEMU_TPM_H */