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/******************************************************************************

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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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   EtherCAT domain structure.

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*/

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/*****************************************************************************/

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#ifndef _EC_DOMAIN_H_

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#define _EC_DOMAIN_H_

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#include <linux/list.h>

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#include <linux/kobject.h>

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#include "globals.h"

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#include "datagram.h"

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#include "master.h"

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/*****************************************************************************/

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/**

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   EtherCAT domain.

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   Handles the process data and the therefore needed datagrams of a certain

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   group of slaves.

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*/

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struct ec_domain

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{

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    struct kobject kobj; /**< kobject */

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    struct list_head list; /**< list item */

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    unsigned int index; /**< domain index (just a number) */

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    ec_master_t *master; /**< EtherCAT master owning the domain */

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    size_t data_size; /**< size of the process data */

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    struct list_head datagrams; /**< process data datagrams */

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    uint32_t base_address; /**< logical offset address of the process data */

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    unsigned int response_count; /**< number of responding slaves */

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    unsigned int state; /**< domain error state */

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    struct list_head data_regs; /**< PDO data registrations */

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    unsigned int working_counter_changes; /**< working counter changes

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                                             since last notification */

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    unsigned long notify_jiffies; /**< time of last notification */

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};

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/*****************************************************************************/

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int ec_domain_init(ec_domain_t *, ec_master_t *, unsigned int);

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void ec_domain_destroy(ec_domain_t *);

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int ec_domain_alloc(ec_domain_t *, uint32_t);

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void ec_domain_queue_datagrams(ec_domain_t *);

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/*****************************************************************************/

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#endif