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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/cdev.h>
- #include <linux/completion.h>
- #include <linux/device.h>
- #include <linux/kref.h>
- #include <linux/mutex.h>
- #include <linux/types.h>
- #define TEE_DEVICE_FLAG_REGISTERED 0x1
- #define TEE_MAX_DEV_NAME_LEN 32
- /**
- * 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
- * @c_no_user: completion used when unregistering the device
- * @mutex: mutex protecting @num_users and @idr
- * @idr: register of user space shared memory objects allocated or
- * registered on this device
- * @pool: shared memory pool
- */
- struct tee_device {
- char name[TEE_MAX_DEV_NAME_LEN];
- const struct tee_desc *desc;
- int id;
- unsigned int flags;
- struct device dev;
- struct cdev cdev;
- size_t num_users;
- struct completion c_no_users;
- struct mutex mutex; /* protects num_users and idr */
- struct idr idr;
- struct tee_shm_pool *pool;
- };
- int tee_shm_init(void);
- 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);
- struct tee_shm *tee_shm_alloc_user_buf(struct tee_context *ctx, size_t size);
- struct tee_shm *tee_shm_register_user_buf(struct tee_context *ctx,
- unsigned long addr, size_t length);
- #endif /*TEE_PRIVATE_H*/
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