XHCI_CRCR_LO_RCS
XWRITE4(sc, oper, XHCI_CRCR_LO, ((uint32_t)addr) | XHCI_CRCR_LO_RCS);
XWRITE4(sc, oper, XHCI_CRCR_LO, ((uint32_t)addr) | XHCI_CRCR_LO_RCS);
ccs = sc->opregs.crcr & XHCI_CRCR_LO_RCS;
ccs ^= XHCI_CRCR_LO_RCS;
(value & (0xFFFFFFC0 | XHCI_CRCR_LO_RCS));