XHCI_HC_OS_OWNED
writel(val | XHCI_HC_OS_OWNED, xdbc.xhci_base + offset);
val = (val | XHCI_HC_OS_OWNED) & ~XHCI_HC_BIOS_OWNED;
writel(val | XHCI_HC_OS_OWNED, base + ext_cap_offset);