PORT_BMI_FIFO_UNITS
#define BMI_PRIORITY_ELEVATION_LEVEL ((0x3FF + 1) * PORT_BMI_FIFO_UNITS)
#define BMI_FIFO_THRESHOLD ((0x3FF + 1) * PORT_BMI_FIFO_UNITS)
tmp = (cfg->rx_pri_elevation / PORT_BMI_FIFO_UNITS - 1) <<
tmp |= cfg->rx_fifo_thr / PORT_BMI_FIFO_UNITS - 1;
tmp = (cfg->tx_fifo_min_level / PORT_BMI_FIFO_UNITS) <<
tmp |= (cfg->tx_fifo_low_comf_level / PORT_BMI_FIFO_UNITS) - 1;