nvkm_device_engine
struct nvkm_engine *nvkm_device_engine(struct nvkm_device *, int type, int inst);
if (!(engine = nvkm_device_engine(device, i, 0)) ||
sclass->engine = nvkm_device_engine(device, NVKM_ENGINE_DMAOBJ, 0);
engine = nvkm_device_engine(device, type, inst);