AHCI_CAP_SCLO
AHCI_CAP_SAL | AHCI_CAP_SCLO | (0x3 << AHCI_CAP_ISS_SHIFT)|
if (!(ahci_ctlp->ahcictl_cap & AHCI_CAP_SCLO)) {
ahci_ctlp->ahcictl_cap |= AHCI_CAP_SCLO;