drivers/staging/octeon/cvmx-helper-rgmii.h

   1 /***********************license start***************
   2  * Author: Cavium Networks
   3  *
   4  * Contact: support@caviumnetworks.com
   5  * This file is part of the OCTEON SDK
   6  *
   7  * Copyright (c) 2003-2008 Cavium Networks
   8  *
   9  * This file is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License, Version 2, as
  11  * published by the Free Software Foundation.
  12  *
  13  * This file is distributed in the hope that it will be useful, but
  14  * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
  16  * NONINFRINGEMENT.  See the GNU General Public License for more
  17  * details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this file; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  22  * or visit http://www.gnu.org/licenses/.
  23  *
  24  * This file may also be available under a different license from Cavium.
  25  * Contact Cavium Networks for more information
  26  ***********************license end**************************************/
  27
  28 /**
  29  * @file
  30  *
  31  * Functions for RGMII/GMII/MII initialization, configuration,
  32  * and monitoring.
  33  *
  34  */
  35 #ifndef __CVMX_HELPER_RGMII_H__
  36 #define __CVMX_HELPER_RGMII_H__
  37
  38 /**
  39  * Probe RGMII ports and determine the number present
  40  *
  41  * @interface: Interface to probe
  42  *
  43  * Returns Number of RGMII/GMII/MII ports (0-4).
  44  */
  45 extern int __cvmx_helper_rgmii_probe(int interface);
  46
  47 /**
  48  * Put an RGMII interface in loopback mode. Internal packets sent
  49  * out will be received back again on the same port. Externally
  50  * received packets will echo back out.
  51  *
  52  * @port:   IPD port number to loop.
  53  */
  54 extern void cvmx_helper_rgmii_internal_loopback(int port);
  55
  56 /**
  57  * Configure all of the ASX, GMX, and PKO regsiters required
  58  * to get RGMII to function on the supplied interface.
  59  *
  60  * @interface: PKO Interface to configure (0 or 1)
  61  *
  62  * Returns Zero on success
  63  */
  64 extern int __cvmx_helper_rgmii_enable(int interface);
  65
  66 /**
  67  * Return the link state of an IPD/PKO port as returned by
  68  * auto negotiation. The result of this function may not match
  69  * Octeon's link config if auto negotiation has changed since
  70  * the last call to cvmx_helper_link_set().
  71  *
  72  * @ipd_port: IPD/PKO port to query
  73  *
  74  * Returns Link state
  75  */
  76 extern cvmx_helper_link_info_t __cvmx_helper_rgmii_link_get(int ipd_port);
  77
  78 /**
  79  * Configure an IPD/PKO port for the specified link state. This
  80  * function does not influence auto negotiation at the PHY level.
  81  * The passed link state must always match the link state returned
  82  * by cvmx_helper_link_get(). It is normally best to use
  83  * cvmx_helper_link_autoconf() instead.
  84  *
  85  * @ipd_port:  IPD/PKO port to configure
  86  * @link_info: The new link state
  87  *
  88  * Returns Zero on success, negative on failure
  89  */
  90 extern int __cvmx_helper_rgmii_link_set(int ipd_port,
  91                                         cvmx_helper_link_info_t link_info);
  92
  93 /**
  94  * Configure a port for internal and/or external loopback. Internal loopback
  95  * causes packets sent by the port to be received by Octeon. External loopback
  96  * causes packets received from the wire to sent out again.
  97  *
  98  * @ipd_port: IPD/PKO port to loopback.
  99  * @enable_internal:
 100  *                 Non zero if you want internal loopback
 101  * @enable_external:
 102  *                 Non zero if you want external loopback
 103  *
 104  * Returns Zero on success, negative on failure.
 105  */
 106 extern int __cvmx_helper_rgmii_configure_loopback(int ipd_port,
 107                                                   int enable_internal,
 108                                                   int enable_external);
 109
 110 #endif