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

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

Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
This commit is contained in:
Volodymyr Babchuk 2017-11-29 14:48:27 +02:00 committed by Jens Wiklander
parent 033ddf12bc
commit b25946ad95
1 changed files with 20 additions and 0 deletions
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20
include/linux/tee_drv.h
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@ -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