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Commit 006c193d authored by Volodymyr Babchuk's avatar Volodymyr Babchuk Committed by Victor Chong
Browse files

BACKPORT: tee: shm: add accessors for buffer size and page offset 



These two function will be needed for shared memory registration in OP-TEE

Change-Id: If6a16ec82a2880c05a37c05bf00e5722b11efc64
Signed-off-by: default avatarVolodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: default avatarJens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit b25946ad951c013c31d0a0e82d2017004bdc8fed)
Signed-off-by: default avatarVictor Chong <victor.chong@linaro.org>
parent f902700b

include/linux/tee_drv.h

+20 −0
Original line number Diff line number Diff line
@@ -393,6 +393,26 @@ void *tee_shm_get_va(struct tee_shm *shm, size_t offs); 
 */

int tee_shm_get_pa(struct tee_shm *shm, size_t offs, phys_addr_t *pa);



/**

 * tee_shm_get_size() - Get size of shared memory buffer

 * @shm:	Shared memory handle

 * @returns size of shared memory

 */

static inline size_t tee_shm_get_size(struct tee_shm *shm)

{

	return shm->size;

}



/**

 * tee_shm_get_page_offset() - Get shared buffer offset from page start

 * @shm:	Shared memory handle

 * @returns page offset of shared buffer

 */

static inline size_t tee_shm_get_page_offset(struct tee_shm *shm)

{

	return shm->offset;

}



/**

 * tee_shm_get_id() - Get id of a shared memory object

 * @shm:	Shared memory handle