CST              3373 drivers/net/ethernet/amd/xgbe/xgbe-dev.c 	XGMAC_IOWRITE_BITS(pdata, MAC_RCR, CST, 1);
CST              3384 drivers/net/ethernet/amd/xgbe/xgbe-dev.c 	XGMAC_IOWRITE_BITS(pdata, MAC_RCR, CST, 0);