TB_CFG_COUNTERS
ret = tb_port_write(port, buf, TB_CFG_COUNTERS, 0,
ret = tb_port_write(port, &val, TB_CFG_COUNTERS,
ret = tb_port_read(port, data, TB_CFG_COUNTERS,
return tb_port_write(port, zero, TB_CFG_COUNTERS, 3 * counter, 3);