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

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 *

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 *  d o m a i n . h

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 *

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 *  EtherCAT domain structure.

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 *

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 *  $Id$

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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 "slave.h"

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#include "command.h"

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

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/**

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   Data field registration type.

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*/

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typedef struct

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{

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

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    ec_slave_t *slave; /**< slave */

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    const ec_sync_t *sync; /**< sync manager */

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    uint32_t field_offset; /**< data field offset */

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    void **data_ptr; /**< pointer to process data pointer(s) */

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}

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ec_field_reg_t;

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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 commands 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 commands; /**< process data commands */

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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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    struct list_head field_regs; /**< data field registrations */

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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_clear(struct kobject *);

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int ec_domain_alloc(ec_domain_t *, uint32_t);

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

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#endif