XHCI_CRCR_LO
reg = XOREAD4(sc, XHCI_CRCR_LO);
XOWRITE4(sc, XHCI_CRCR_LO, reg | XHCI_CRCR_LO_CA);
reg = XOREAD4(sc, XHCI_CRCR_LO) & XHCI_CRCR_LO_CRR;
XOWRITE4(sc, XHCI_CRCR_LO, ((uint32_t)paddr) | XHCI_CRCR_LO_RCS);
XOREAD4(sc, XHCI_CRCR_HI), XOREAD4(sc, XHCI_CRCR_LO), paddr));
XOWRITE4(sc, XHCI_CRCR_LO, 0);
XOWRITE4(sc, XHCI_CRCR_LO, 0);