FIFODATA
nsp_multi_read_4(base, FIFODATA, buf, count);
nsp_multi_write_1(base, FIFODATA, buf, count);
nsp_multi_write_2(base, FIFODATA, buf, count);
nsp_multi_write_4(base, FIFODATA, buf, count);
nsp_mmio_multi_read_4(base, FIFODATA, buf, count);
nsp_mmio_multi_write_4(base, FIFODATA, buf, count);
nsp_multi_read_1(base, FIFODATA, buf, count);
nsp_multi_read_2(base, FIFODATA, buf, count);