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/***********************license start***************
 * Copyright (c) 2003-2010  Cavium Inc. (support@cavium.com). All rights
 * reserved.
 *
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.

 *   * Neither the name of Cavium Inc. nor the names of
 *     its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written
 *     permission.

 * This Software, including technical data, may be subject to U.S. export  control
 * laws, including the U.S. Export Administration Act and its  associated
 * regulations, and may be subject to export or import  regulations in other
 * countries.

 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
 * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
 * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
 * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
 * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
 * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
 * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
 * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
 * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE  RISK ARISING OUT OF USE OR
 * PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
 ***********************license end**************************************/







/**
 * @file
 *
 * Functions for RGMII/GMII/MII initialization, configuration,
 * and monitoring.
 *
 * <hr>$Revision: 70030 $<hr>
 */
#ifndef __CVMX_HELPER_RGMII_H__
#define __CVMX_HELPER_RGMII_H__

/**
 * @INTERNAL
 * Probe RGMII ports and determine the number present
 *
 * @param interface Interface to probe
 *
 * @return Number of RGMII/GMII/MII ports (0-4).
 */
extern int __cvmx_helper_rgmii_probe(int interface);
static inline int __cvmx_helper_rgmii_enumerate(int interface)
{
	return __cvmx_helper_rgmii_probe(interface);
}

/**
 * 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.
 */
extern 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 interface PKO Interface to configure (0 or 1)
 *
 * @return Zero on success
 */
extern int __cvmx_helper_rgmii_enable(int interface);

/**
 * @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
 */
extern 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
 */
extern 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.
 */
extern int __cvmx_helper_rgmii_configure_loopback(int ipd_port, int enable_internal, int enable_external);

#endif