XHCI_LEGACY_CONTROL_OFFSET
val = readl(xdbc.xhci_base + offset + XHCI_LEGACY_CONTROL_OFFSET);
writel(val, xdbc.xhci_base + offset + XHCI_LEGACY_CONTROL_OFFSET);
val = readl(base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET);
writel(val, base + ext_cap_offset + XHCI_LEGACY_CONTROL_OFFSET);