157 lines
4.4 KiB
C
157 lines
4.4 KiB
C
/******************************************************************************
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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 */
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/*****************************************************************************/
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