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  */
  46 extern int __cvmx_helper_loop_probe(int interface);
  47 static 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  */
  58 extern int __cvmx_helper_loop_enable(int interface);
  59
  60 #endif