fp@2589: /******************************************************************************
fp@2589:  *
fp@2589:  *  $Id$
fp@2589:  *
fp@2589:  *  Copyright (C) 2012  Florian Pose, Ingenieurgemeinschaft IgH
fp@2589:  *
fp@2589:  *  This file is part of the IgH EtherCAT Master.
fp@2589:  *
fp@2589:  *  The IgH EtherCAT Master is free software; you can redistribute it and/or
fp@2589:  *  modify it under the terms of the GNU General Public License version 2, as
fp@2589:  *  published by the Free Software Foundation.
fp@2589:  *
fp@2589:  *  The IgH EtherCAT Master is distributed in the hope that it will be useful,
fp@2589:  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
fp@2589:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
fp@2589:  *  Public License for more details.
fp@2589:  *
fp@2589:  *  You should have received a copy of the GNU General Public License along
fp@2589:  *  with the IgH EtherCAT Master; if not, write to the Free Software
fp@2589:  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
fp@2589:  *
fp@2589:  *  ---
fp@2589:  *
fp@2589:  *  The license mentioned above concerns the source code only. Using the
fp@2589:  *  EtherCAT technology and brand is only permitted in compliance with the
fp@2589:  *  industrial property and similar rights of Beckhoff Automation GmbH.
fp@2589:  *
fp@2589:  *****************************************************************************/
fp@2589: 
fp@2589: /**
fp@2589:    \file
fp@2589:    EtherCAT register request structure.
fp@2589: */
fp@2589: 
fp@2589: /*****************************************************************************/
fp@2589: 
fp@2589: #ifndef __EC_REG_REQUEST_H__
fp@2589: #define __EC_REG_REQUEST_H__
fp@2589: 
fp@2589: #include <linux/list.h>
fp@2589: 
fp@2589: #include "globals.h"
fp@2589: 
fp@2589: /*****************************************************************************/
fp@2589: 
fp@2589: /** Register request.
fp@2589:  */
fp@2589: struct ec_reg_request {
fp@2589:     struct list_head list; /**< List item. */
fp@2589:     size_t mem_size; /**< Size of data memory. */
fp@2589:     uint8_t *data; /**< Pointer to data memory. */
fp@2589:     ec_direction_t dir; /**< Direction. EC_DIR_OUTPUT means writing to the
fp@2589:                           slave, EC_DIR_INPUT means reading from the slave. */
fp@2589:     uint16_t address; /**< Register address. */
fp@2589:     size_t transfer_size; /**< Size of the data to transfer. */
fp@2589:     ec_internal_request_state_t state; /**< Request state. */
fp@2589:     uint16_t ring_position; /**< Ring position for emergency requests. */
fp@2589: };
fp@2589: 
fp@2589: /*****************************************************************************/
fp@2589: 
fp@2589: int ec_reg_request_init(ec_reg_request_t *, size_t);
fp@2589: void ec_reg_request_clear(ec_reg_request_t *);
fp@2589: 
fp@2589: /*****************************************************************************/
fp@2589: 
fp@2589: #endif