nvkm_falcon_pio_rd
int nvkm_falcon_pio_rd(struct nvkm_falcon *, u8 port, enum nvkm_falcon_mem type, u32 mem_base,
nvkm_falcon_pio_rd(falcon, 0, DMEM, tail, data, 0, size);
ret = nvkm_falcon_pio_rd(&fsp->falcon, 0, EMEM, 0, packet, 0, packet_size);