diff options
| -rw-r--r-- | drivers/tee/tee_core.c | 3 | ||||
| -rw-r--r-- | drivers/tee/tee_private.h | 2 | ||||
| -rw-r--r-- | drivers/tee/tee_shm.c | 33 | ||||
| -rw-r--r-- | include/linux/tee_drv.h | 2 |
4 files changed, 38 insertions, 2 deletions
diff --git a/drivers/tee/tee_core.c b/drivers/tee/tee_core.c index a15812baaeb1..8aa1a4836b92 100644 --- a/drivers/tee/tee_core.c +++ b/drivers/tee/tee_core.c @@ -334,8 +334,7 @@ tee_ioctl_shm_register(struct tee_context *ctx, if (data.flags) return -EINVAL; - shm = tee_shm_register(ctx, data.addr, data.length, - TEE_SHM_DMA_BUF | TEE_SHM_USER_MAPPED); + shm = tee_shm_register_user_buf(ctx, data.addr, data.length); if (IS_ERR(shm)) return PTR_ERR(shm); diff --git a/drivers/tee/tee_private.h b/drivers/tee/tee_private.h index 7265f47c6d8e..409cadcc1cff 100644 --- a/drivers/tee/tee_private.h +++ b/drivers/tee/tee_private.h @@ -58,5 +58,7 @@ void teedev_ctx_get(struct tee_context *ctx); void teedev_ctx_put(struct tee_context *ctx); struct tee_shm *tee_shm_alloc_user_buf(struct tee_context *ctx, size_t size); +struct tee_shm *tee_shm_register_user_buf(struct tee_context *ctx, + unsigned long addr, size_t length); #endif /*TEE_PRIVATE_H*/ 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); diff --git a/include/linux/tee_drv.h b/include/linux/tee_drv.h index 7f038f8787c7..c9d2cc32a5ed 100644 --- a/include/linux/tee_drv.h +++ b/include/linux/tee_drv.h @@ -287,6 +287,8 @@ struct tee_shm *tee_shm_alloc_kernel_buf(struct tee_context *ctx, size_t size); */ struct tee_shm *tee_shm_register(struct tee_context *ctx, unsigned long addr, size_t length, u32 flags); +struct tee_shm *tee_shm_register_kernel_buf(struct tee_context *ctx, + void *addr, size_t length); /** * tee_shm_is_registered() - Check if shared memory object in registered in TEE |