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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2015-2016, Linaro Limited
*/
#ifndef TEE_PRIVATE_H
#define TEE_PRIVATE_H
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/types.h>
#define TEE_DEVICE_FLAG_REGISTERED 0x1
#define TEE_MAX_DEV_NAME_LEN 32
struct tee_shm;
struct tee_context;
/**
* struct tee_device - TEE Device representation
* @name: name of device
* @desc: description of device
* @id: unique id of device
* @flags: represented by TEE_DEVICE_FLAG_REGISTERED above
* @dev: embedded basic device structure
* @cdev: embedded cdev
* @num_users: number of active users of this device
* @mutex: mutex protecting @num_users and @idr
*/
struct tee_device {
char name[TEE_MAX_DEV_NAME_LEN];
const struct tee_desc *desc;
struct list_head list;
unsigned int flags;
struct device dev;
struct cdev cdev;
size_t num_users;
struct mutex mutex; /* protects num_users and idr */
};
int tee_shm_get_fd(struct tee_shm *shm);
bool tee_device_get(struct tee_device *teedev);
void tee_device_put(struct tee_device *teedev);
void teedev_ctx_get(struct tee_context *ctx);
void teedev_ctx_put(struct tee_context *ctx);
#endif /*TEE_PRIVATE_H*/
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