linux/drivers/char/tpm/tpm-dev-common.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2004 IBM Corporation
 * Authors:
 * Leendert van Doorn <[email protected]>
 * Dave Safford <[email protected]>
 * Reiner Sailer <[email protected]>
 * Kylene Hall <[email protected]>
 *
 * Copyright (C) 2013 Obsidian Research Corp
 * Jason Gunthorpe <[email protected]>
 *
 * Device file system interface to the TPM
 */
#include <linux/poll.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/workqueue.h>
#include "tpm.h"
#include "tpm-dev.h"

static struct workqueue_struct *tpm_dev_wq;

static ssize_t tpm_dev_transmit(struct tpm_chip *chip, struct tpm_space *space,
				u8 *buf, size_t bufsiz)
{ … }

static void tpm_dev_async_work(struct work_struct *work)
{ … }

static void user_reader_timeout(struct timer_list *t)
{ … }

static void tpm_timeout_work(struct work_struct *work)
{ … }

void tpm_common_open(struct file *file, struct tpm_chip *chip,
		     struct file_priv *priv, struct tpm_space *space)
{ … }

ssize_t tpm_common_read(struct file *file, char __user *buf,
			size_t size, loff_t *off)
{ … }

ssize_t tpm_common_write(struct file *file, const char __user *buf,
			 size_t size, loff_t *off)
{ … }

__poll_t tpm_common_poll(struct file *file, poll_table *wait)
{ … }

/*
 * Called on file close
 */
void tpm_common_release(struct file *file, struct file_priv *priv)
{ … }

int __init tpm_dev_common_init(void)
{ … }

void __exit tpm_dev_common_exit(void)
{ … }