LXR qemu/hw/tpm/tpm

   1/*
   2 * tpm_tis.h - QEMU's TPM TIS interface emulator
   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 * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11 * See the COPYING file in the top-level directory.
  12 *
  13 * Implementation of the TIS interface according to specs found at
  14 * http://www.trustedcomputinggroup.org
  15 *
  16 */
  17#ifndef TPM_TPM_TIS_H
  18#define TPM_TPM_TIS_H
  19
  20#include "hw/isa/isa.h"
  21#include "qemu-common.h"
  22
  23#define TPM_TIS_ADDR_BASE           0xFED40000
  24
  25#define TPM_TIS_NUM_LOCALITIES      5     /* per spec */
  26#define TPM_TIS_LOCALITY_SHIFT      12
  27#define TPM_TIS_NO_LOCALITY         0xff
  28
  29#define TPM_TIS_IS_VALID_LOCTY(x)   ((x) < TPM_TIS_NUM_LOCALITIES)
  30
  31#define TPM_TIS_IRQ                 5
  32
  33#define TPM_TIS_BUFFER_MAX          4096
  34
  35#define TYPE_TPM_TIS                "tpm-tis"
  36
  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    uint8_t sts;
  51    uint32_t inte;
  52    uint32_t ints;
  53
  54    uint16_t w_offset;
  55    uint16_t r_offset;
  56    TPMSizedBuffer w_buffer;
  57    TPMSizedBuffer r_buffer;
  58} TPMLocality;
  59
  60typedef struct TPMTISEmuState {
  61    QEMUBH *bh;
  62    uint32_t offset;
  63    uint8_t buf[TPM_TIS_BUFFER_MAX];
  64
  65    uint8_t active_locty;
  66    uint8_t aborting_locty;
  67    uint8_t next_locty;
  68
  69    TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
  70
  71    qemu_irq irq;
  72    uint32_t irq_num;
  73} TPMTISEmuState;
  74
  75#endif /* TPM_TPM_TIS_H */
  76