1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _TPM_DEV_H 3 #define _TPM_DEV_H 4 5 #include "tpm.h" 6 7 struct file_priv { 8 struct tpm_chip *chip; 9 10 /* Data passed to and from the tpm via the read/write calls */ 11 size_t data_pending; 12 struct mutex buffer_mutex; 13 14 struct timer_list user_read_timer; /* user needs to claim result */ 15 struct work_struct work; 16 17 u8 data_buffer[TPM_BUFSIZE]; 18 }; 19 20 void tpm_common_open(struct file *file, struct tpm_chip *chip, 21 struct file_priv *priv); 22 ssize_t tpm_common_read(struct file *file, char __user *buf, 23 size_t size, loff_t *off); 24 ssize_t tpm_common_write(struct file *file, const char __user *buf, 25 size_t size, loff_t *off, struct tpm_space *space); 26 void tpm_common_release(struct file *file, struct file_priv *priv); 27 28 #endif 29