1 /******************************************************************************

     2  *

     3  *  $Id$

     4  *

     5  *  Copyright (C) 2012  Florian Pose, Ingenieurgemeinschaft IgH

     6  *

     7  *  This file is part of the IgH EtherCAT Master.

     8  *

     9  *  The IgH EtherCAT Master is free software; you can redistribute it and/or

    10  *  modify it under the terms of the GNU General Public License version 2, as

    11  *  published by the Free Software Foundation.

    12  *

    13  *  The IgH EtherCAT Master is distributed in the hope that it will be useful,

    14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of

    15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General

    16  *  Public License for more details.

    17  *

    18  *  You should have received a copy of the GNU General Public License along

    19  *  with the IgH EtherCAT Master; if not, write to the Free Software

    20  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    21  *

    22  *  ---

    23  *

    24  *  The license mentioned above concerns the source code only. Using the

    25  *  EtherCAT technology and brand is only permitted in compliance with the

    26  *  industrial property and similar rights of Beckhoff Automation GmbH.

    27  *

    28  *****************************************************************************/

    29 

    30 /**

    31    \file

    32    EtherCAT register request structure.

    33 */

    34 

    35 /*****************************************************************************/

    36 

    37 #ifndef __EC_REG_REQUEST_H__

    38 #define __EC_REG_REQUEST_H__

    39 

    40 #include <linux/list.h>

    41 

    42 #include "globals.h"

    43 

    44 /*****************************************************************************/

    45 

    46 /** Register request.

    47  */

    48 struct ec_reg_request {

    49     struct list_head list; /**< List item. */

    50     size_t mem_size; /**< Size of data memory. */

    51     uint8_t *data; /**< Pointer to data memory. */

    52     ec_direction_t dir; /**< Direction. EC_DIR_OUTPUT means writing to the

    53                           slave, EC_DIR_INPUT means reading from the slave. */

    54     uint16_t address; /**< Register address. */

    55     size_t transfer_size; /*< Size of the data to transfer. */

    56     ec_internal_request_state_t state; /**< Request state. */

    57 };

    58 

    59 /*****************************************************************************/

    60 

    61 int ec_reg_request_init(ec_reg_request_t *, size_t);

    62 void ec_reg_request_clear(ec_reg_request_t *);

    63 

    64 /*****************************************************************************/

    65 

    66 #endif