CVMX_GMXX_RX_XAUI_CTL
(CVMX_GMXX_RX_XAUI_CTL(interface), union cvmx_gmxx_rx_xaui_ctl,
gmxx_rx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RX_XAUI_CTL(interface));
gmxx_rx_xaui_ctl.u64 = cvmx_read_csr(CVMX_GMXX_RX_XAUI_CTL(interface));