dummy/module.c
author Florian Pose <fp@igh-essen.com>
Tue, 18 Sep 2007 14:16:26 +0000
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/******************************************************************************
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 *
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 *  $Id$
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 *
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 *  Copyright (C) 2006  Florian Pose, Ingenieurgemeinschaft IgH
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 *
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 *  This file is part of the IgH EtherCAT Master.
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 *
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 *  The IgH EtherCAT Master is free software; you can redistribute it
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 *  and/or modify it under the terms of the GNU General Public License
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 *  as published by the Free Software Foundation; either version 2 of the
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 *  License, or (at your option) any later version.
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 *
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 *  The IgH EtherCAT Master is distributed in the hope that it will be
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 *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with the IgH EtherCAT Master; if not, write to the Free Software
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 *
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 *  The right to use EtherCAT Technology is granted and comes free of
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 *  charge under condition of compatibility of product made by
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 *  Licensee. People intending to distribute/sell products based on the
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 *  code, have to sign an agreement to guarantee that products using
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 *  software based on IgH EtherCAT master stay compatible with the actual
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 *  EtherCAT specification (which are released themselves as an open
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 *  standard) as the (only) precondition to have the right to use EtherCAT
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 *  Technology, IP and trade marks.
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 *
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 *****************************************************************************/
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/**
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   \file
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   Dummy EtherCAT master driver module.
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*/
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/*****************************************************************************/
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#include <linux/module.h>
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//#include <linux/kernel.h>
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//#include <linux/init.h>
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#include "../master/globals.h"
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#include "../include/ecrt.h"
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/*****************************************************************************/
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int __init ec_init_module(void);
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void __exit ec_cleanup_module(void);
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char *ec_master_version_str = EC_MASTER_VERSION;
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/*****************************************************************************/
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/** \cond */
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MODULE_AUTHOR("Florian Pose <fp@igh-essen.com>");
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MODULE_DESCRIPTION("DUMMY EtherCAT master driver module");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(EC_MASTER_VERSION);
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/** \endcond */
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/*****************************************************************************/
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#define DUMMY_SIZE (PAGE_SIZE * 8)
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uint8_t dummy_data[DUMMY_SIZE];
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off_t dummy_off = 0;
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uint8_t *get_dummy_data(void)
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{
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    off_t cur = dummy_off;
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    dummy_off += 64;
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    dummy_off %= DUMMY_SIZE;
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    return dummy_data + cur;
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}
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/*****************************************************************************/
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/**
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 * Module initialization.
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 * Initializes \a ec_master_count masters.
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 * \return 0 on success, else < 0
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 */
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int __init ec_init_module(void)
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{
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    EC_INFO("Master DUMMY driver %s\n", EC_MASTER_VERSION);
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    memset(dummy_data, 0x00, DUMMY_SIZE);
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    return 0;
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}
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/*****************************************************************************/
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/**
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   Module cleanup.
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   Clears all master instances.
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*/
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void __exit ec_cleanup_module(void)
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{
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    EC_INFO("Master DUMMY module cleaned up.\n");
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}
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/******************************************************************************
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 *  Realtime interface
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 *****************************************************************************/
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unsigned int ecrt_version_magic(void)
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{
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    return ECRT_VERSION_MAGIC;
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}
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/*****************************************************************************/
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ec_master_t *ecrt_request_master(unsigned int master_index
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                                 /**< master index */
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                                 )
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{
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    EC_INFO("Requesting DUMMY master %u...\n", master_index);
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    return (void *) master_index + 1;
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}
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/*****************************************************************************/
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/**
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   Releases a reserved EtherCAT master.
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   \ingroup RealtimeInterface
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*/
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void ecrt_release_master(ec_master_t *master /**< EtherCAT master */)
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{
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    EC_INFO("Released DUMMY master %u.\n", (unsigned int) master - 1);
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}
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/*****************************************************************************/
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/** \cond */
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module_init(ec_init_module);
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module_exit(ec_cleanup_module);
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EXPORT_SYMBOL(ecrt_request_master);
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EXPORT_SYMBOL(ecrt_release_master);
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EXPORT_SYMBOL(ecrt_version_magic);
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/** \endcond */
a9794f927d78 Added dummy module for simulation purposes.
Florian Pose <fp@igh-essen.com>
parents:
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a9794f927d78 Added dummy module for simulation purposes.
Florian Pose <fp@igh-essen.com>
parents:
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/*****************************************************************************/