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kernel/linux-rt-4.4.41/arch/mips/include/asm/octeon/cvmx-helper-loop.h 1.93 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 LOOP initialization, configuration,
   * and monitoring.
   *
   */
  #ifndef __CVMX_HELPER_LOOP_H__
  #define __CVMX_HELPER_LOOP_H__
  
  /**
   * Probe a LOOP interface and determine the number of ports
   * connected to it. The LOOP 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_loop_probe(int interface);
  static inline int __cvmx_helper_loop_enumerate(int interface) {return 4; }
  
  /**
   * Bringup and enable a LOOP 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_loop_enable(int interface);
  
  #endif