XREAD4
cparams = XREAD4(&psc->sc, XHCI_HCCPARAMS);
eec = XREAD4(&psc->sc, xecp);
v = XREAD4(sc, XHCI_HCCPARAMS);
sc->sc_door_off = XREAD4(sc, XHCI_DBOFF);
sc->sc_runt_off = XREAD4(sc, XHCI_RTSOFF);
hcr = XREAD4(sc, XHCI_HCCPARAMS);
hcr = XREAD4(sc, XHCI_HCSPARAMS1);
hcr = XREAD4(sc, XHCI_HCSPARAMS2);