| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Copyright (C) 2020 Marvell International Ltd. |
| * |
| * Functions for RGMII/GMII/MII initialization, configuration, |
| * and monitoring. |
| */ |
| |
| #ifndef __CVMX_HELPER_RGMII_H__ |
| #define __CVMX_HELPER_RGMII_H__ |
| |
| /** |
| * @INTERNAL |
| * Probe RGMII ports and determine the number present |
| * |
| * @param xiface Interface to probe |
| * |
| * @return Number of RGMII/GMII/MII ports (0-4). |
| */ |
| int __cvmx_helper_rgmii_probe(int xiface); |
| |
| /** |
| * Put an RGMII interface in loopback mode. Internal packets sent |
| * out will be received back again on the same port. Externally |
| * received packets will echo back out. |
| * |
| * @param port IPD port number to loop. |
| */ |
| void cvmx_helper_rgmii_internal_loopback(int port); |
| |
| /** |
| * @INTERNAL |
| * Configure all of the ASX, GMX, and PKO regsiters required |
| * to get RGMII to function on the supplied interface. |
| * |
| * @param xiface PKO Interface to configure (0 or 1) |
| * |
| * @return Zero on success |
| */ |
| int __cvmx_helper_rgmii_enable(int xiface); |
| |
| /** |
| * @INTERNAL |
| * Return the link state of an IPD/PKO port as returned by |
| * auto negotiation. The result of this function may not match |
| * Octeon's link config if auto negotiation has changed since |
| * the last call to cvmx_helper_link_set(). |
| * |
| * @param ipd_port IPD/PKO port to query |
| * |
| * @return Link state |
| */ |
| cvmx_helper_link_info_t __cvmx_helper_gmii_link_get(int ipd_port); |
| |
| /** |
| * @INTERNAL |
| * Return the link state of an IPD/PKO port as returned by |
| * auto negotiation. The result of this function may not match |
| * Octeon's link config if auto negotiation has changed since |
| * the last call to cvmx_helper_link_set(). |
| * |
| * @param ipd_port IPD/PKO port to query |
| * |
| * @return Link state |
| */ |
| cvmx_helper_link_info_t __cvmx_helper_rgmii_link_get(int ipd_port); |
| |
| /** |
| * @INTERNAL |
| * Configure an IPD/PKO port for the specified link state. This |
| * function does not influence auto negotiation at the PHY level. |
| * The passed link state must always match the link state returned |
| * by cvmx_helper_link_get(). It is normally best to use |
| * cvmx_helper_link_autoconf() instead. |
| * |
| * @param ipd_port IPD/PKO port to configure |
| * @param link_info The new link state |
| * |
| * @return Zero on success, negative on failure |
| */ |
| int __cvmx_helper_rgmii_link_set(int ipd_port, cvmx_helper_link_info_t link_info); |
| |
| /** |
| * @INTERNAL |
| * Configure a port for internal and/or external loopback. Internal loopback |
| * causes packets sent by the port to be received by Octeon. External loopback |
| * causes packets received from the wire to sent out again. |
| * |
| * @param ipd_port IPD/PKO port to loopback. |
| * @param enable_internal |
| * Non zero if you want internal loopback |
| * @param enable_external |
| * Non zero if you want external loopback |
| * |
| * @return Zero on success, negative on failure. |
| */ |
| int __cvmx_helper_rgmii_configure_loopback(int ipd_port, int enable_internal, int enable_external); |
| |
| #endif |