drivers/char/tpm/tpm-dev.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _TPM_DEV_H
   3 #define _TPM_DEV_H
   4
   5 #include <linux/poll.h>
   6 #include "tpm.h"
   7
   8 struct file_priv {
   9         struct tpm_chip *chip;
  10         struct tpm_space *space;
  11
  12         struct mutex buffer_mutex;
  13         struct timer_list user_read_timer;      /* user needs to claim result */
  14         struct work_struct timeout_work;
  15         struct work_struct async_work;
  16         wait_queue_head_t async_wait;
  17         ssize_t response_length;
  18         bool response_read;
  19         bool command_enqueued;
  20
  21         u8 data_buffer[TPM_BUFSIZE];
  22 };
  23
  24 void tpm_common_open(struct file *file, struct tpm_chip *chip,
  25                      struct file_priv *priv, struct tpm_space *space);
  26 ssize_t tpm_common_read(struct file *file, char __user *buf,
  27                         size_t size, loff_t *off);
  28 ssize_t tpm_common_write(struct file *file, const char __user *buf,
  29                          size_t size, loff_t *off);
  30 __poll_t tpm_common_poll(struct file *file, poll_table *wait);
  31
  32 void tpm_common_release(struct file *file, struct file_priv *priv);
  33 #endif