ATAC_CAP_NCQ
if (atac->atac_cap & ATAC_CAP_NCQ)
| ((sc->sc_ahci_cap & AHCI_CAP_NCQ) ? ATAC_CAP_NCQ : 0);
sc->sc_wdcdev.sc_atac.atac_cap |= ATAC_CAP_NCQ;
sc->sc_atac.atac_cap = ATAC_CAP_DMA | ATAC_CAP_UDMA | ATAC_CAP_NCQ;