drm: virtio-gpu: transfer dumb buffers to host on plane update

robherring · airlied · commit 4109e7f7d5ae · 2016-02-11T08:56:23.000+10:00
For dumb buffers, we need to transfer them to the host when updating a
plane.

Signed-off-by: Rob Herring &lt;robh@kernel.org&gt;
Signed-off-by: Dave Airlie &lt;airlied@redhat.com&gt;
diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -72,6 +72,13 @@ static void virtio_gpu_plane_atomic_update(struct drm_plane *plane,
 		vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
 		bo = gem_to_virtio_gpu_obj(vgfb->obj);
 		handle = bo->hw_res_handle;
+		if (bo->dumb) {
+			virtio_gpu_cmd_transfer_to_host_2d
+				(vgdev, handle, 0,
+				 cpu_to_le32(plane->state->crtc_w),
+				 cpu_to_le32(plane->state->crtc_h),
+				 plane->state->crtc_x, plane->state->crtc_y, NULL);
+		}
 	} else {
 		handle = 0;
 	}
