IC_INTR_MASK
XI2C_IOWRITE(pdata, IC_INTR_MASK, 0);
XI2C_IOWRITE(pdata, IC_INTR_MASK, XGBE_DEFAULT_INT_MASK);
XI2C_IOWRITE_BITS(pdata, IC_INTR_MASK, TX_EMPTY, 0);