LXR linux/drivers/char/tpm/tpm_ftpm

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * Copyright (C) Microsoft Corporation
   4 */
   5
   6#ifndef __TPM_FTPM_TEE_H__
   7#define __TPM_FTPM_TEE_H__
   8
   9#include <linux/tee_drv.h>
  10#include <linux/tpm.h>
  11#include <linux/uuid.h>
  12
  13/* The TAFs ID implemented in this TA */
  14#define FTPM_OPTEE_TA_SUBMIT_COMMAND  (0)
  15#define FTPM_OPTEE_TA_EMULATE_PPI     (1)
  16
  17/* max. buffer size supported by fTPM  */
  18#define MAX_COMMAND_SIZE       4096
  19#define MAX_RESPONSE_SIZE      4096
  20
  21/**
  22 * struct ftpm_tee_private - fTPM's private data
  23 * @chip:     struct tpm_chip instance registered with tpm framework.
  24 * @state:    internal state
  25 * @session:  fTPM TA session identifier.
  26 * @resp_len: cached response buffer length.
  27 * @resp_buf: cached response buffer.
  28 * @ctx:      TEE context handler.
  29 * @shm:      Memory pool shared with fTPM TA in TEE.
  30 */
  31struct ftpm_tee_private {
  32        struct tpm_chip *chip;
  33        u32 session;
  34        size_t resp_len;
  35        u8 resp_buf[MAX_RESPONSE_SIZE];
  36        struct tee_context *ctx;
  37        struct tee_shm *shm;
  38};
  39
  40#endif /* __TPM_FTPM_TEE_H__ */
  41