asm/octeon/cvmx-helper-loop.h

0001 /***********************license start***************
0002  * Author: Cavium Networks
0003  *
0004  * Contact: support@caviumnetworks.com
0005  * This file is part of the OCTEON SDK
0006  *
0007  * Copyright (c) 2003-2008 Cavium Networks
0008  *
0009  * This file is free software; you can redistribute it and/or modify
0010  * it under the terms of the GNU General Public License, Version 2, as published by
0011  * the Free Software Foundation.
0012  *
0013  * This file is distributed in the hope that it will be useful,
0014  * but AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of
0015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
0016  * See the GNU General Public License for more details.
0017  *
0018  * You should have received a copy of the GNU General Public License
0019  * along with this file; if not, write to the Free Software
0020  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
0021  * or visit http://www.gnu.org/licenses/.
0022  *
0023  * This file may also be available under a different license from Cavium.
0024  * Contact Cavium Networks for more information
0025  ***********************license end**************************************/
0026
0027 /**
0028  * @file
0029  *
0030  * Functions for LOOP initialization, configuration,
0031  * and monitoring.
0032  *
0033  */
0034 #ifndef __CVMX_HELPER_LOOP_H__
0035 #define __CVMX_HELPER_LOOP_H__
0036
0037 /**
0038  * Probe a LOOP interface and determine the number of ports
0039  * connected to it. The LOOP interface should still be down after
0040  * this call.
0041  *
0042  * @interface: Interface to probe
0043  *
0044  * Returns Number of ports on the interface. Zero to disable.
0045  */
0046 extern int __cvmx_helper_loop_probe(int interface);
0047 static inline int __cvmx_helper_loop_enumerate(int interface) {return 4; }
0048
0049 /**
0050  * Bringup and enable a LOOP interface. After this call packet
0051  * I/O should be fully functional. This is called with IPD
0052  * enabled but PKO disabled.
0053  *
0054  * @interface: Interface to bring up
0055  *
0056  * Returns Zero on success, negative on failure
0057  */
0058 extern int __cvmx_helper_loop_enable(int interface);
0059
0060 #endif