AHCI_CAP
v = ATA_INL(ctlr->r_mem, AHCI_CAP);
ATA_OUTL(ctlr->r_mem, AHCI_CAP, v | AHCI_CAP_SSS);
ATA_OUTL(ctlr->r_mem, AHCI_CAP, ctlr->caps);
ctlr->caps = ATA_INL(ctlr->r_mem, AHCI_CAP);
caps = ATA_INL(ctlr->r_mem, AHCI_CAP);
case AHCI_CAP:
case AHCI_CAP:
p += (offset - AHCI_CAP) / sizeof(uint32_t);