LXR qemu/hw/tpm/tpm

   1/*
   2 * tpm_tis.h - QEMU's TPM TIS common header
   3 *
   4 * Copyright (C) 2006,2010-2013 IBM Corporation
   5 *
   6 * Authors:
   7 *  Stefan Berger <stefanb@us.ibm.com>
   8 *  David Safford <safford@us.ibm.com>
   9 *
  10 * Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at>
  11 *
  12 * This work is licensed under the terms of the GNU GPL, version 2 or later.
  13 * See the COPYING file in the top-level directory.
  14 *
  15 * Implementation of the TIS interface according to specs found at
  16 * http://www.trustedcomputinggroup.org. This implementation currently
  17 * supports version 1.3, 21 March 2013
  18 * In the developers menu choose the PC Client section then find the TIS
  19 * specification.
  20 *
  21 * TPM TIS for TPM 2 implementation following TCG PC Client Platform
  22 * TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43
  23 */
  24#ifndef TPM_TPM_TIS_H
  25#define TPM_TPM_TIS_H
  26
  27#include "sysemu/tpm_backend.h"
  28#include "tpm_ppi.h"
  29
  30#define TPM_TIS_NUM_LOCALITIES      5     /* per spec */
  31#define TPM_TIS_LOCALITY_SHIFT      12
  32#define TPM_TIS_NO_LOCALITY         0xff
  33
  34#define TPM_TIS_IS_VALID_LOCTY(x)   ((x) < TPM_TIS_NUM_LOCALITIES)
  35
  36#define TPM_TIS_BUFFER_MAX          4096
  37
  38typedef enum {
  39    TPM_TIS_STATE_IDLE = 0,
  40    TPM_TIS_STATE_READY,
  41    TPM_TIS_STATE_COMPLETION,
  42    TPM_TIS_STATE_EXECUTION,
  43    TPM_TIS_STATE_RECEPTION,
  44} TPMTISState;
  45
  46/* locality data  -- all fields are persisted */
  47typedef struct TPMLocality {
  48    TPMTISState state;
  49    uint8_t access;
  50    uint32_t sts;
  51    uint32_t iface_id;
  52    uint32_t inte;
  53    uint32_t ints;
  54} TPMLocality;
  55
  56typedef struct TPMState {
  57    MemoryRegion mmio;
  58
  59    unsigned char buffer[TPM_TIS_BUFFER_MAX];
  60    uint16_t rw_offset;
  61
  62    uint8_t active_locty;
  63    uint8_t aborting_locty;
  64    uint8_t next_locty;
  65
  66    TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
  67
  68    qemu_irq irq;
  69    uint32_t irq_num;
  70
  71    TPMBackendCmd cmd;
  72
  73    TPMBackend *be_driver;
  74    TPMVersion be_tpm_version;
  75
  76    size_t be_buffer_size;
  77
  78    bool ppi_enabled;
  79    TPMPPI ppi;
  80} TPMState;
  81
  82extern const VMStateDescription vmstate_locty;
  83extern const MemoryRegionOps tpm_tis_memory_ops;
  84
  85int tpm_tis_pre_save(TPMState *s);
  86void tpm_tis_reset(TPMState *s);
  87enum TPMVersion tpm_tis_get_tpm_version(TPMState *s);
  88void tpm_tis_request_completed(TPMState *s, int ret);
  89
  90#endif /* TPM_TPM_TIS_H */
  91