Each fence should be associated with a [fence ID, fence_context, seqno]. The seqno number is just the fence id.
To get the fence context, we add the ring_idx to the 3D context's base_fence_ctx. The ring_idx is between 0 and 31, inclusive.
Each 3D context will have it's own base_fence_ctx. The ring_idx will be emitted to host userspace, when emit_fence_info is true.
Signed-off-by: Gurchetan Singh gurchetansingh@chromium.org Acked-by: Lingfeng Yang lfy@google.com --- drivers/gpu/drm/virtio/virtgpu_drv.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h index 9996abf60e3a..401aec1a5efb 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -139,7 +139,9 @@ struct virtio_gpu_fence_driver {
struct virtio_gpu_fence { struct dma_fence f; + uint32_t ring_idx; uint64_t fence_id; + bool emit_fence_info; struct virtio_gpu_fence_driver *drv; struct list_head node; };