fp@409: /******************************************************************************
fp@409:  *
fp@409:  *  $Id$
fp@409:  *
fp@409:  *  Copyright (C) 2006  Florian Pose, Ingenieurgemeinschaft IgH
fp@409:  *
fp@409:  *  This file is part of the IgH EtherCAT Master.
fp@409:  *
fp@409:  *  The IgH EtherCAT Master is free software; you can redistribute it
fp@409:  *  and/or modify it under the terms of the GNU General Public License
fp@409:  *  as published by the Free Software Foundation; either version 2 of the
fp@409:  *  License, or (at your option) any later version.
fp@409:  *
fp@409:  *  The IgH EtherCAT Master is distributed in the hope that it will be
fp@409:  *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
fp@409:  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
fp@409:  *  GNU General Public License for more details.
fp@409:  *
fp@409:  *  You should have received a copy of the GNU General Public License
fp@409:  *  along with the IgH EtherCAT Master; if not, write to the Free Software
fp@409:  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
fp@409:  *
fp@409:  *  The right to use EtherCAT Technology is granted and comes free of
fp@409:  *  charge under condition of compatibility of product made by
fp@409:  *  Licensee. People intending to distribute/sell products based on the
fp@409:  *  code, have to sign an agreement to guarantee that products using
fp@409:  *  software based on IgH EtherCAT master stay compatible with the actual
fp@409:  *  EtherCAT specification (which are released themselves as an open
fp@409:  *  standard) as the (only) precondition to have the right to use EtherCAT
fp@409:  *  Technology, IP and trade marks.
fp@409:  *
fp@409:  *****************************************************************************/
fp@409: 
fp@409: /**
fp@409:    \file
fp@847:    Canopen-over-EtherCAT Sdo request functions.
fp@409: */
fp@409: 
fp@409: /*****************************************************************************/
fp@409: 
fp@409: #include <linux/module.h>
fp@409: 
fp@847: #include "sdo_request.h"
fp@409: 
fp@409: /*****************************************************************************/
fp@409: 
fp@852: void ec_sdo_request_clear_data(ec_sdo_request_t *);
fp@852: 
fp@852: /*****************************************************************************/
fp@852: 
fp@847: /** Sdo request constructor.
fp@758:  */
fp@847: void ec_sdo_request_init(
fp@852:         ec_sdo_request_t *req /**< Sdo request. */
fp@831:         )
fp@831: {
fp@430:     req->data = NULL;
fp@430:     req->size = 0;
fp@852:     req->state = EC_REQUEST_COMPLETE;
fp@430: }
fp@430: 
fp@430: /*****************************************************************************/
fp@430: 
fp@847: /** Sdo request destructor.
fp@847:  */
fp@847: void ec_sdo_request_clear(
fp@847:         ec_sdo_request_t *req /**< Sdo request. */
fp@847:         )
fp@430: {
fp@852:     ec_sdo_request_clear_data(req);
fp@430: }
fp@430: 
fp@430: /*****************************************************************************/
fp@852: 
fp@852: /** Sdo request destructor.
fp@852:  */
fp@852: void ec_sdo_request_clear_data(
fp@852:         ec_sdo_request_t *req /**< Sdo request. */
fp@852:         )
fp@852: {
fp@852:     if (req->data) {
fp@852:         kfree(req->data);
fp@852:         req->data = NULL;
fp@852:     }
fp@852: 
fp@852:     req->size = 0;
fp@852: }
fp@852: 
fp@852: /*****************************************************************************/
fp@852: 
fp@852: /** Start an Sdo read operation (download).
fp@852:  */
fp@852: void ec_sdo_request_read(
fp@852:         ec_sdo_request_t *req, /**< Sdo request. */
fp@852:         uint16_t index, /**< Sdo index. */
fp@852:         uint8_t subindex /**< Sdo subindex. */
fp@852:         )
fp@852: {
fp@852:     req->index = index;
fp@852:     req->subindex = subindex;
fp@852:     req->state = EC_REQUEST_QUEUED;
fp@852: 
fp@852:     ec_sdo_request_clear_data(req);
fp@852: }
fp@852: 
fp@852: /*****************************************************************************/