/***********************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**************************************/
/*
* Functions for SPI initialization , configuration ,
* and monitoring .
*/
#ifndef __CVMX_HELPER_SPI_H__
#define __CVMX_HELPER_SPI_H__
/**
* Probe a SPI interface and determine the number of ports
* connected to it . The SPI 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_spi_probe(int interface);
extern int __cvmx_helper_spi_enumerate(int interface);
/**
* Bringup and enable a SPI 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_spi_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 union cvmx_helper_link_info __cvmx_helper_spi_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 ( ) .
*
* @ ipd_port : IPD / PKO port to configure
* @ link_info : The new link state
*
* Returns Zero on success , negative on failure
*/
extern int __cvmx_helper_spi_link_set(int ipd_port,
union cvmx_helper_link_info link_info);
#endif
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