FSL_SATA_P_PCC
r = ATA_INL(ch->r_mem, FSL_SATA_P_PCC);
ATA_OUTL(ch->r_mem, FSL_SATA_P_PCC, r & ~FSL_SATA_PCC_LPB_EN);
work = ATA_INL(ch->r_mem, FSL_SATA_P_PCC) & ~FSL_SATA_PCC_LPB_EN;
ATA_OUTL(ch->r_mem, FSL_SATA_P_PCC, work);