XGBE_GEN_HI_MASK
mmd_data = (offset % 4) ? FIELD_GET(XGBE_GEN_HI_MASK, mmd_data) :
hi_mask = FIELD_PREP(XGBE_GEN_HI_MASK, mmd_data);
hi_mask = FIELD_PREP(XGBE_GEN_HI_MASK,
FIELD_GET(XGBE_GEN_HI_MASK, pci_mmd_data));