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/******************************************************************************
*
* $Id$
*
* Copyright (C) 2006-2008 Florian Pose, Ingenieurgemeinschaft IgH
*
* This file is part of the IgH EtherCAT Master.
*
* The IgH EtherCAT Master 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.
*
* The IgH EtherCAT Master is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with the IgH EtherCAT Master; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* ---
*
* The license mentioned above concerns the source code only. Using the
* EtherCAT technology and brand is only permitted in compliance with the
* industrial property and similar rights of Beckhoff Automation GmbH.
*
*****************************************************************************/
/**
\file
Vendor specific over EtherCAT protocol handler.
*/
/*****************************************************************************/
#ifndef __EC_VOE_HANDLER_H__
#define __EC_VOE_HANDLER_H__
#include <linux/list.h>
#include "globals.h"
#include "datagram.h"
/*****************************************************************************/
/** Vendor specific over EtherCAT handler.
*/
struct ec_voe_handler {
struct list_head list; /**< List item. */
ec_slave_config_t *config; /**< Parent slave configuration. */
ec_datagram_t datagram; /**< State machine datagram. */
uint32_t vendor_id; /**< Vendor ID for the header. */
uint16_t vendor_type; /**< Vendor type for the header. */
size_t data_size; /**< Size of VoE data. */
ec_direction_t dir; /**< Direction. EC_DIR_OUTPUT means writing to
the slave, EC_DIR_INPUT means reading from the
slave. */
void (*state)(ec_voe_handler_t *); /**< State function */
ec_internal_request_state_t request_state; /**< Handler state. */
unsigned int retries; /**< retries upon datagram timeout */
unsigned long jiffies_start; /**< Timestamp for timeout calculation. */
};
/*****************************************************************************/
int ec_voe_handler_init(ec_voe_handler_t *, ec_slave_config_t *, size_t);
void ec_voe_handler_clear(ec_voe_handler_t *);
size_t ec_voe_handler_mem_size(const ec_voe_handler_t *);
/*****************************************************************************/
#endif
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