FSL_SATA_P_CER
ATA_INL(ch->r_mem, FSL_SATA_P_CER),
ATA_OUTL(ch->r_mem, FSL_SATA_P_CER, 0xFFFF);
cer = ATA_INL(ch->r_mem, FSL_SATA_P_CER);
ATA_OUTL(ch->r_mem, FSL_SATA_P_CER, cer);