XHCI_ERSTBA_HI
XRWRITE4(sc, XHCI_ERSTBA_HI(0), (uint32_t)(paddr >> 32));
XRREAD4(sc, XHCI_ERSTBA_HI(0)), XRREAD4(sc, XHCI_ERSTBA_LO(0))));
XRWRITE4(sc, XHCI_ERSTBA_HI(0), 0);