On Fri, 28 Sep 2018 16:21:25 -0700
Eric Anholt <e...@anholt.net> wrote:
> Since this is UAPI, it's good to document what exactly the guarantees
> we're providing are.
>
> Signed-off-by: Eric Anholt <e...@anholt.net>
Reviewed-by: Boris Brezillon <boris.brezil...@bootlin.com>
> ---
> include/uapi/drm/v3d_drm.h | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/include/uapi/drm/v3d_drm.h b/include/uapi/drm/v3d_drm.h
> index 7b6627783608..f446656d00b1 100644
> --- a/include/uapi/drm/v3d_drm.h
> +++ b/include/uapi/drm/v3d_drm.h
> @@ -58,6 +58,11 @@ struct drm_v3d_submit_cl {
> * coordinate shader to determine where primitives land on the screen,
> * then writes out the state updates and draw calls necessary per tile
> * to the tile allocation BO.
> + *
> + * This BCL will block on any previous BCL submitted on the
> + * same FD, but not on any RCL or BCLs submitted by other
> + * clients -- that is left up to the submitter to control
> + * using in_sync_bcl if necessary.
> */
> __u32 bcl_start;
>
> @@ -69,6 +74,11 @@ struct drm_v3d_submit_cl {
> * This is the second set of commands executed, which will either
> * execute the tiles that have been set up by the BCL, or a fixed set
> * of tiles (in the case of RCL-only blits).
> + *
> + * This RCL will block on this submit's BCL, and any previous
> + * RCL submitted on the same FD, but not on any RCL or BCLs
> + * submitted by other clients -- that is left up to the
> + * submitter to control using in_sync_rcl if necessary.
> */
> __u32 rcl_start;
>
