LXR linux/arch/mips/include/asm/octeon/cvmx-helper-loop.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 published by
  11 * the Free Software Foundation.
  12 *
  13 * This file is distributed in the hope that it will be useful,
  14 * but AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
  16 * See the GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this file; if not, write to the Free Software
  20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  21 * or visit http://www.gnu.org/licenses/.
  22 *
  23 * This file may also be available under a different license from Cavium.
  24 * Contact Cavium Networks for more information
  25 ***********************license end**************************************/
  26
  27/**
  28 * @file
  29 *
  30 * Functions for LOOP initialization, configuration,
  31 * and monitoring.
  32 *
  33 */
  34#ifndef __CVMX_HELPER_LOOP_H__
  35#define __CVMX_HELPER_LOOP_H__
  36
  37/**
  38 * Probe a LOOP interface and determine the number of ports
  39 * connected to it. The LOOP interface should still be down after
  40 * this call.
  41 *
  42 * @interface: Interface to probe
  43 *
  44 * Returns Number of ports on the interface. Zero to disable.
  45 */
  46extern int __cvmx_helper_loop_probe(int interface);
  47static inline int __cvmx_helper_loop_enumerate(int interface) {return 4; }
  48
  49/**
  50 * Bringup and enable a LOOP interface. After this call packet
  51 * I/O should be fully functional. This is called with IPD
  52 * enabled but PKO disabled.
  53 *
  54 * @interface: Interface to bring up
  55 *
  56 * Returns Zero on success, negative on failure
  57 */
  58extern int __cvmx_helper_loop_enable(int interface);
  59
  60#endif
  61