uapi/linux/tee.h

2  * Copyright (c) 2015-2016, Linaro Limited
49 #define TEE_GEN_CAP_REG_MEM	(1 << 2)/* Supports registering shared memory */
52 #define TEE_MEMREF_NULL		(__u64)(-1) /* NULL MemRef Buffer */
62  * OP-TEE specific capabilities
67  * struct tee_ioctl_version_data - TEE version
83  * TEE_IOC_VERSION - query version of TEE
92  * struct tee_ioctl_shm_alloc_data - Shared memory allocate argument
93  * @size:	[in/out] Size of shared memory to allocate
95  * @id:		[out] Identifier of the shared memory
108  * TEE_IOC_SHM_ALLOC - allocate shared memory
110  * Allocates shared memory between the user space process and secure OS.
114  * The returned file descriptor is used to map the shared memory into user
115  * space. The shared memory is freed when the descriptor is closed and the
116  * memory is unmapped.
122  * struct tee_ioctl_buf_data - Variable sized buffer
147  * These defines shared memory reference parameters (struct
177  * Disallow user-space to use GP implementation specific login
178  * method range (0x80000000 - 0xBFFFFFFF). This range is rather
187  * struct tee_ioctl_param - parameter
189  * @a: if a memref, offset into the shared memory object, else a value parameter
191  * @c: if a memref, shared memory identifier, else a value parameter
198  * Shared memory is allocated with TEE_IOC_SHM_ALLOC which returns an
199  * identifier representing the shared memory object. A memref can reference
200  * a part of a shared memory by specifying an offset (@a) and size (@b) of
201  * the object. To supply the entire shared memory object set the offset
207  * (section 3.2.5 memory references), which can be found at
212  * memory reference.
224  * struct tee_ioctl_open_session_arg - Open session argument
248  * TEE_IOC_OPEN_SESSION - opens a session to a Trusted Application
258  * struct tee_ioctl_invoke_func_arg - Invokes a function in a Trusted
279  * TEE_IOC_INVOKE - Invokes a function in a Trusted Application
288  * struct tee_ioctl_cancel_arg - Cancels an open session or invoke ioctl
298  * TEE_IOC_CANCEL - Cancels an open session or invoke
304  * struct tee_ioctl_close_session_arg - Closes an open session
312  * TEE_IOC_CLOSE_SESSION - Closes a session
318  * struct tee_iocl_supp_recv_arg - Receive a request for a supplicant function
322  * @num_params is the number of params that tee-supplicant has room to
324  * tee-supplicant receives when output.
334  * TEE_IOC_SUPPL_RECV - Receive a request for a supplicant function
343  * struct tee_iocl_supp_send_arg - Send a response to a received request
355  * TEE_IOC_SUPPL_SEND - Send a response to a received request
364  * struct tee_ioctl_shm_register_data - Shared memory register argument
365  * @addr:      [in] Start address of shared memory to register
366  * @length:    [in/out] Length of shared memory to register
368  * @id:                [out] Identifier of the shared memory
382  * TEE_IOC_SHM_REGISTER - Register shared memory argument
384  * Registers shared memory between the user space process and secure OS.
388  * The shared memory is unregisterred when the descriptor is closed.
397  *   - closes the device file descriptor
398  *   - closes a file descriptor connected to allocated shared memory
399  * mmap(): maps shared memory into user space using information from struct
401  * munmap(): unmaps previously shared memory