If the framebuffer associated with the plane contains a fence, then it is added to resource_flush and will be waited upon for a max of 50 msecs or until it is signalled by the Host.
Cc: Gerd Hoffmann <[email protected]> Signed-off-by: Vivek Kasireddy <[email protected]> --- drivers/gpu/drm/virtio/virtgpu_plane.c | 45 ++++++++++++++++++++++---- 1 file changed, 39 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c index dd7a1f2db9ad..a49fd9480381 100644 --- a/drivers/gpu/drm/virtio/virtgpu_plane.c +++ b/drivers/gpu/drm/virtio/virtgpu_plane.c @@ -129,6 +129,40 @@ static void virtio_gpu_update_dumb_bo(struct virtio_gpu_device *vgdev, objs, NULL); } +static void virtio_gpu_resource_flush(struct drm_plane *plane, + uint32_t x, uint32_t y, + uint32_t width, uint32_t height) +{ + struct drm_device *dev = plane->dev; + struct virtio_gpu_device *vgdev = dev->dev_private; + struct virtio_gpu_framebuffer *vgfb; + struct virtio_gpu_object *bo; + + vgfb = to_virtio_gpu_framebuffer(plane->state->fb); + bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]); + if (vgfb->fence) { + struct virtio_gpu_object_array *objs; + + objs = virtio_gpu_array_alloc(1); + if (!objs) + return; + virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]); + virtio_gpu_array_lock_resv(objs); + virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle, x, y, + width, height, objs, vgfb->fence); + virtio_gpu_notify(vgdev); + + dma_fence_wait_timeout(&vgfb->fence->f, true, + msecs_to_jiffies(50)); + dma_fence_put(&vgfb->fence->f); + vgfb->fence = NULL; + } else { + virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle, x, y, + width, height, NULL, NULL); + virtio_gpu_notify(vgdev); + } +} + static void virtio_gpu_primary_plane_update(struct drm_plane *plane, struct drm_atomic_state *state) { @@ -198,12 +232,11 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane, } } - virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle, - rect.x1, - rect.y1, - rect.x2 - rect.x1, - rect.y2 - rect.y1); - virtio_gpu_notify(vgdev); + virtio_gpu_resource_flush(plane, + rect.x1, + rect.y1, + rect.x2 - rect.x1, + rect.y2 - rect.y1); } static int virtio_gpu_plane_prepare_fb(struct drm_plane *plane, -- 2.30.2
