diff options
Diffstat (limited to 'drivers/tee/tee_shm.c')
-rw-r--r-- | drivers/tee/tee_shm.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/tee/tee_shm.c b/drivers/tee/tee_shm.c index dd748d572691..359bab36e163 100644 --- a/drivers/tee/tee_shm.c +++ b/drivers/tee/tee_shm.c @@ -299,6 +299,39 @@ err: } EXPORT_SYMBOL_GPL(tee_shm_register); +/** + * tee_shm_register_user_buf() - Register a userspace shared memory buffer + * @ctx: Context that registers the shared memory + * @addr: The userspace address of the shared buffer + * @length: Length of the shared buffer + * + * @returns a pointer to 'struct tee_shm' + */ +struct tee_shm *tee_shm_register_user_buf(struct tee_context *ctx, + unsigned long addr, size_t length) +{ + return tee_shm_register(ctx, addr, length, + TEE_SHM_DMA_BUF | TEE_SHM_USER_MAPPED); +} + +/** + * tee_shm_register_kernel_buf() - Register kernel memory to be shared with + * secure world + * @ctx: Context that registers the shared memory + * @addr: The buffer + * @length: Length of the buffer + * + * @returns a pointer to 'struct tee_shm' + */ + +struct tee_shm *tee_shm_register_kernel_buf(struct tee_context *ctx, + void *addr, size_t length) +{ + return tee_shm_register(ctx, (unsigned long)addr, length, + TEE_SHM_DMA_BUF | TEE_SHM_KERNEL_MAPPED); +} +EXPORT_SYMBOL_GPL(tee_shm_register_kernel_buf); + static int tee_shm_fop_release(struct inode *inode, struct file *filp) { tee_shm_put(filp->private_data); |