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