include/linux/tee_core.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
24 #define TEE_SHM_DYNAMIC		BIT(0)  /* Dynamic shared memory registered */
26 #define TEE_SHM_USER_MAPPED	BIT(1)  /* Memory mapped in user space */
27 #define TEE_SHM_POOL		BIT(2)  /* Memory allocated from pool */
28 #define TEE_SHM_PRIV		BIT(3)  /* Memory private to TEE driver */
34  * struct tee_device - TEE Device representation
44  * @idr:	register of user space shared memory objects allocated or
46  * @pool:	shared memory pool
66  * struct tee_driver_ops - driver operations vtable
77  * @shm_register:	register shared memory buffer in TEE
78  * @shm_unregister:	unregister shared memory buffer in TEE
105  * struct tee_desc - Describes the TEE driver to the subsystem
120  * tee_device_alloc() - Allocate a new struct tee_device instance
123  * @pool:	Shared memory pool, NULL if not used
137  * tee_device_register() - Registers a TEE device
148  * tee_device_unregister() - Removes a TEE device
158  * tee_device_set_dev_groups() - Set device attribute groups
170  * tee_session_calc_client_uuid() - Calculates client UUID for session
186  * struct tee_shm_pool - shared memory pool
188  * @private_data:	private data for the shared memory manager
196  * struct tee_shm_pool_ops - shared memory pool operations
197  * @alloc:		called when allocating shared memory
198  * @free:		called when freeing shared memory
209  * tee_shm_pool_alloc_res_mem() - Create a shm manager for reserved memory
221  * tee_shm_pool_free() - Free a shared memory pool
222  * @pool:	The shared memory pool to free
224  * The must be no remaining shared memory allocated from this pool when
229 	pool->ops->destroy_pool(pool);  in tee_shm_pool_free()
233  * tee_get_drvdata() - Return driver_data pointer
239  * tee_shm_alloc_priv_buf() - Allocate shared memory for private use by specific
241  * @ctx:	The TEE context for shared memory allocation
242  * @size:	Shared memory allocation size
258  * tee_shm_is_dynamic() - Check if shared memory object is of the dynamic kind
259  * @shm:	Shared memory handle
260  * @returns true if object is dynamic shared memory
264 	return shm && (shm->flags & TEE_SHM_DYNAMIC);  in tee_shm_is_dynamic()
268  * tee_shm_put() - Decrease reference count on a shared memory handle
269  * @shm:	Shared memory handle
274  * tee_shm_get_id() - Get id of a shared memory object
275  * @shm:	Shared memory handle
280 	return shm->id;  in tee_shm_get_id()
284  * tee_shm_get_from_id() - Find shared memory object and increase reference
286  * @ctx:	Context owning the shared memory
287  * @id:		Id of shared memory object
294 	switch (param->attr & TEE_IOCTL_PARAM_ATTR_TYPE_MASK) {  in tee_param_is_memref()
305  * teedev_open() - Open a struct tee_device
313  * teedev_close_context() - closes a struct tee_context