nouveau_fence_priv
struct nouveau_fence_priv *priv = (void*)drm->fence;
struct nouveau_fence_priv *priv = (void*)chan->cli->drm->fence;
struct nouveau_fence_priv base;
#define nouveau_fence(drm) ((struct nouveau_fence_priv *)(drm)->fence)
struct nouveau_fence_priv base;
struct nouveau_fence_priv base;