XHCI_CRCR
addr = xhci_get64(xhcip, XHCI_R_OPER, XHCI_CRCR);
xhci_put64(xhcip, XHCI_R_OPER, XHCI_CRCR, addr);
reg = xhci_get64(xhcip, XHCI_R_OPER, XHCI_CRCR);
xhci_put64(xhcip, XHCI_R_OPER, XHCI_CRCR, reg);