Commit 4fa825bf authored by Eric Anholt's avatar Eric Anholt

drm/v3d: Add some better documentation of the in_sync arguments.

Since this is UAPI, it's good to document what exactly the guarantees
we're providing are.
Signed-off-by: default avatarEric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180928232126.4332-3-eric@anholt.netReviewed-by: default avatarBoris Brezillon <boris.brezillon@bootlin.com>
parent 6915c9a5
......@@ -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;
......
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