LXR qemu/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#ifdef CONFIG_TPM
  19
  20int tpm_config_parse(QemuOptsList *opts_list, const char *optarg);
  21int tpm_init(void);
  22void tpm_cleanup(void);
  23
  24typedef enum TPMVersion {
  25    TPM_VERSION_UNSPEC = 0,
  26    TPM_VERSION_1_2 = 1,
  27    TPM_VERSION_2_0 = 2,
  28} TPMVersion;
  29
  30#define TYPE_TPM_IF "tpm-if"
  31typedef struct TPMIfClass TPMIfClass;
  32DECLARE_CLASS_CHECKERS(TPMIfClass, TPM_IF,
  33                       TYPE_TPM_IF)
  34#define TPM_IF(obj)                             \
  35    INTERFACE_CHECK(TPMIf, (obj), TYPE_TPM_IF)
  36
  37typedef struct TPMIf TPMIf;
  38
  39struct 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 */
  62static 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
  69static 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#else /* CONFIG_TPM */
  79
  80#define tpm_init()  (0)
  81#define tpm_cleanup()
  82
  83#endif /* CONFIG_TPM */
  84
  85#endif /* QEMU_TPM_H */
  86