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kernel/linux-rt-4.4.41/arch/mips/include/asm/octeon/cvmx-helper-sgmii.h 3.37 KB
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  /***********************license start***************
   * Author: Cavium Networks
   *
   * Contact: support@caviumnetworks.com
   * This file is part of the OCTEON SDK
   *
   * Copyright (c) 2003-2008 Cavium Networks
   *
   * This file is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License, Version 2, as
   * published by the Free Software Foundation.
   *
   * This file is distributed in the hope that it will be useful, but
   * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
   * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
   * NONINFRINGEMENT.  See the GNU General Public License for more
   * details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this file; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
   * or visit http://www.gnu.org/licenses/.
   *
   * This file may also be available under a different license from Cavium.
   * Contact Cavium Networks for more information
   ***********************license end**************************************/
  
  /**
   * @file
   *
   * Functions for SGMII initialization, configuration,
   * and monitoring.
   *
   */
  #ifndef __CVMX_HELPER_SGMII_H__
  #define __CVMX_HELPER_SGMII_H__
  
  /**
   * Probe a SGMII interface and determine the number of ports
   * connected to it. The SGMII interface should still be down after
   * this call.
   *
   * @interface: Interface to probe
   *
   * Returns Number of ports on the interface. Zero to disable.
   */
  extern int __cvmx_helper_sgmii_probe(int interface);
  extern int __cvmx_helper_sgmii_enumerate(int interface);
  
  /**
   * Bringup and enable a SGMII interface. After this call packet
   * I/O should be fully functional. This is called with IPD
   * enabled but PKO disabled.
   *
   * @interface: Interface to bring up
   *
   * Returns Zero on success, negative on failure
   */
  extern int __cvmx_helper_sgmii_enable(int interface);
  
  /**
   * 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().
   *
   * @ipd_port: IPD/PKO port to query
   *
   * Returns Link state
   */
  extern cvmx_helper_link_info_t __cvmx_helper_sgmii_link_get(int ipd_port);
  
  /**
   * 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.
   *
   * @ipd_port:  IPD/PKO port to configure
   * @link_info: The new link state
   *
   * Returns Zero on success, negative on failure
   */
  extern int __cvmx_helper_sgmii_link_set(int ipd_port,
  					cvmx_helper_link_info_t link_info);
  
  /**
   * 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.
   *
   * @ipd_port: IPD/PKO port to loopback.
   * @enable_internal:
   *		   Non zero if you want internal loopback
   * @enable_external:
   *		   Non zero if you want external loopback
   *
   * Returns Zero on success, negative on failure.
   */
  extern int __cvmx_helper_sgmii_configure_loopback(int ipd_port,
  						  int enable_internal,
  						  int enable_external);
  
  #endif