master/slave.h
author Florian Pose <fp@igh-essen.com>
Thu, 21 Feb 2008 15:54:10 +0000
changeset 810 7d7c59e1427e
parent 799 068a58b96965
child 813 bfc3f1ab52de
permissions -rw-r--r--
Avoided warning concerning EC_READ/WRITE() macros on some compilers.
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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 slave structure.
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*/
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/*****************************************************************************/
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#ifndef _EC_SLAVE_H_
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#define _EC_SLAVE_H_
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#include <linux/list.h>
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#include <linux/kobject.h>
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#include "../include/ecrt.h"
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#include "globals.h"
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#include "datagram.h"
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#include "pdo.h"
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#include "sync.h"
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/*****************************************************************************/
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/** State of an EtherCAT slave.
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 */
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typedef enum {
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    EC_SLAVE_STATE_UNKNOWN = 0x00,
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    /**< unknown state */
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    EC_SLAVE_STATE_INIT = 0x01,
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    /**< INIT state (no mailbox communication, no IO) */
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    EC_SLAVE_STATE_PREOP = 0x02,
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    /**< PREOP state (mailbox communication, no IO) */
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    EC_SLAVE_STATE_SAVEOP = 0x04,
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    /**< SAVEOP (mailbox communication and input update) */
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    EC_SLAVE_STATE_OP = 0x08,
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    /**< OP (mailbox communication and input/output update) */
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    EC_SLAVE_STATE_ACK_ERR = 0x10
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    /**< Acknowledge/Error bit (no actual state) */
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} ec_slave_state_t;
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/*****************************************************************************/
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/** EtherCAT slave online state.
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 */
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typedef enum {
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    EC_SLAVE_OFFLINE,
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    EC_SLAVE_ONLINE
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} ec_slave_online_state_t;
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/*****************************************************************************/
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/** Supported mailbox protocols.
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 */
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enum {
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    EC_MBOX_AOE = 0x01, /**< ADS-over-EtherCAT */
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    EC_MBOX_EOE = 0x02, /**< Ethernet-over-EtherCAT */
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    EC_MBOX_COE = 0x04, /**< CANopen-over-EtherCAT */
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    EC_MBOX_FOE = 0x08, /**< File-Access-over-EtherCAT */
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    EC_MBOX_SOE = 0x10, /**< Servo-Profile-over-EtherCAT */
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    EC_MBOX_VOE = 0x20  /**< Vendor specific */
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};
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/*****************************************************************************/
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/** EtherCAT slave.
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 */
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struct ec_slave
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{
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    struct list_head list; /**< list item */
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    struct kobject kobj; /**< kobject */
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    ec_master_t *master; /**< master owning the slave */
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    // addresses
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    uint16_t ring_position; /**< ring position */
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    uint16_t station_address; /**< configured station address */
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    // configuration
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    ec_slave_config_t *config; /**< Current configuration. */
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    ec_slave_state_t requested_state; /**< Requested application state. */
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    ec_slave_state_t current_state; /**< Current application state. */
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    ec_slave_online_state_t online_state; /**< online state */
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    unsigned int self_configured; /**< Slave was configured by this master. */
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    unsigned int error_flag; /**< Stop processing after an error. */
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    // base data
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    uint8_t base_type; /**< slave type */
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    uint8_t base_revision; /**< revision */
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    uint16_t base_build; /**< build number */
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    uint16_t base_fmmu_count; /**< number of supported FMMUs */
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    // data link status
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    uint8_t dl_link[4]; /**< link detected */
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    uint8_t dl_loop[4]; /**< loop closed */
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    uint8_t dl_signal[4]; /**< detected signal on RX port */
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    // EEPROM
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    uint8_t *eeprom_data; /**< Complete EEPROM image */
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    size_t eeprom_size; /**< size of the EEPROM contents in bytes */
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    // slave information interface
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    uint16_t sii_alias; /**< configured station alias */
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    uint32_t sii_vendor_id; /**< vendor id */
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    uint32_t sii_product_code; /**< vendor's product code */
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    uint32_t sii_revision_number; /**< revision number */
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    uint32_t sii_serial_number; /**< serial number */
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    uint16_t sii_rx_mailbox_offset; /**< mailbox address (master to slave) */
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    uint16_t sii_rx_mailbox_size; /**< mailbox size (master to slave) */
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    uint16_t sii_tx_mailbox_offset; /**< mailbox address (slave to master) */
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    uint16_t sii_tx_mailbox_size; /**< mailbox size (slave to master) */
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    uint16_t sii_mailbox_protocols; /**< supported mailbox protocols */
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    uint8_t sii_physical_layer[4]; /**< port media */
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    char **sii_strings; /**< strings in EEPROM categories */
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    unsigned int sii_string_count; /**< number of EEPROM strings */
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    ec_sync_t *sii_syncs; /**< EEPROM SYNC MANAGER categories */
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    unsigned int sii_sync_count; /**< number of sync managers in EEPROM */
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    struct list_head sii_pdos; /**< EEPROM [RT]XPDO categories */
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    char *sii_group; /**< slave group acc. to EEPROM */
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    char *sii_image; /**< slave image name acc. to EEPROM */
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    char *sii_order; /**< slave order number acc. to EEPROM */
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    char *sii_name; /**< slave name acc. to EEPROM */
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    int16_t sii_current_on_ebus; /**< power consumption */
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    struct kobject sdo_kobj; /**< kobject for SDOs */
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    struct list_head sdo_dictionary; /**< SDO dictionary list */
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    uint8_t sdo_dictionary_fetched; /**< dictionary has been fetched */
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    unsigned long jiffies_preop; /**< time, the slave went to PREOP */
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    uint8_t pdo_mapping_fetched; /**< PDO mapping has been fetched */
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};
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/*****************************************************************************/
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// slave construction/destruction
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int ec_slave_init(ec_slave_t *, ec_master_t *, uint16_t, uint16_t);
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void ec_slave_destroy(ec_slave_t *);
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void ec_slave_request_state(ec_slave_t *, ec_slave_state_t);
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void ec_slave_set_state(ec_slave_t *, ec_slave_state_t);
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void ec_slave_set_online_state(ec_slave_t *, ec_slave_online_state_t);
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// SII categories
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int ec_slave_fetch_sii_strings(ec_slave_t *, const uint8_t *, size_t);
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int ec_slave_fetch_sii_general(ec_slave_t *, const uint8_t *, size_t);
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int ec_slave_fetch_sii_syncs(ec_slave_t *, const uint8_t *, size_t);
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int ec_slave_fetch_sii_pdos(ec_slave_t *, const uint8_t *, size_t,
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        ec_direction_t);
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// misc.
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ec_sync_t *ec_slave_get_pdo_sync(ec_slave_t *, ec_direction_t); 
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int ec_slave_validate(const ec_slave_t *, uint32_t, uint32_t);
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void ec_slave_sdo_dict_info(const ec_slave_t *,
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        unsigned int *, unsigned int *);
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ec_sdo_t *ec_slave_get_sdo(ec_slave_t *, uint16_t);
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const ec_pdo_t *ec_slave_find_pdo(const ec_slave_t *, uint16_t);
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/*****************************************************************************/
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#endif