AHCI_P_FBS
uint32_t fbs = ATA_INL(ch->r_mem, AHCI_P_FBS);
ATA_OUTL(ch->r_mem, AHCI_P_FBS, AHCI_P_FBS_EN | AHCI_P_FBS_DEC);
ATA_OUTL(ch->r_mem, AHCI_P_FBS, AHCI_P_FBS_EN |
ATA_OUTL(ch->r_mem, AHCI_P_FBS,
case AHCI_P_FBS:
case AHCI_P_FBS: