master/slave.h
author Florian Pose <fp@igh-essen.com>
Mon, 04 May 2009 10:05:55 +0000
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permissions -rw-r--r--
Separated application time from synchronizing reference clock.
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/******************************************************************************
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 *
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 *  $Id$
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 *
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 *  Copyright (C) 2006-2008  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 and/or
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 *  modify it under the terms of the GNU General Public License version 2, as
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 *  published by the Free Software Foundation.
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 *
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 *  The IgH EtherCAT Master is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
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 *  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 along
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 *  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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 *  ---
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 *
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 *  The license mentioned above concerns the source code only. Using the
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 *  EtherCAT technology and brand is only permitted in compliance with the
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 *  industrial property and similar rights of Beckhoff Automation GmbH.
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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 "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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#include "sdo.h"
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/*****************************************************************************/
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/** Slave port.
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 */
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typedef struct {
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    ec_slave_port_desc_t desc; /**< Port descriptors. */
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    ec_slave_port_link_t link; /**< Port link status. */
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    ec_slave_t *next_slave; /**< Connected slaves. */
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    uint32_t receive_time; /**< Port receive times for delay
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                                            measurement. */
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    uint32_t delay_to_next_dc; /**< Delay to next slave with DC support behind
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                                 this port [ns]. */
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} ec_slave_port_t;
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/*****************************************************************************/
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/** Slave information interface data.
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 */
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typedef struct {
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    // Non-category data 
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    uint16_t alias; /**< Configured station alias. */
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    uint32_t vendor_id; /**< Vendor ID. */
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    uint32_t product_code; /**< Vendor-specific product code. */
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    uint32_t revision_number; /**< Revision number. */
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    uint32_t serial_number; /**< Serial number. */
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    uint16_t boot_rx_mailbox_offset; /**< Bootstrap receive mailbox address. */
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    uint16_t boot_rx_mailbox_size; /**< Bootstrap receive mailbox size. */
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    uint16_t boot_tx_mailbox_offset; /**< Bootstrap transmit mailbox address. */
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    uint16_t boot_tx_mailbox_size; /**< Bootstrap transmit mailbox size. */
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    uint16_t std_rx_mailbox_offset; /**< Standard receive mailbox address. */
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    uint16_t std_rx_mailbox_size; /**< Standard receive mailbox size. */
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    uint16_t std_tx_mailbox_offset; /**< Standard transmit mailbox address. */
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    uint16_t std_tx_mailbox_size; /**< Standard transmit mailbox size. */
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    uint16_t mailbox_protocols; /**< Supported mailbox protocols. */
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    // Strings
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    char **strings; /**< Strings in SII categories. */
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    unsigned int string_count; /**< Number of SII strings. */
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    // General
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    unsigned int has_general; /**< General category present. */
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    char *group; /**< Group name. */
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    char *image; /**< Image name. */
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    char *order; /**< Order number. */
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    char *name; /**< Slave name. */
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    uint8_t physical_layer[EC_MAX_PORTS]; /**< Port media. */
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    ec_sii_coe_details_t coe_details; /**< CoE detail flags. */
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    ec_sii_general_flags_t general_flags; /**< General flags. */
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    int16_t current_on_ebus; /**< Power consumption in mA. */
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    // SyncM
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    ec_sync_t *syncs; /**< SYNC MANAGER categories. */
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    unsigned int sync_count; /**< Number of sync managers. */
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    // [RT]XPDO
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    struct list_head pdos; /**< SII [RT]XPDO categories. */
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} ec_sii_t;
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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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    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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    ec_slave_port_t ports[EC_MAX_PORTS]; /**< Ports. */
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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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    unsigned int error_flag; /**< Stop processing after an error. */
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    unsigned int force_config; /**< Force (re-)configuration. */
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    uint16_t configured_rx_mailbox_offset;
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    uint16_t configured_rx_mailbox_size;
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    uint16_t configured_tx_mailbox_offset;
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    uint16_t configured_tx_mailbox_size;
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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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    uint8_t base_fmmu_count; /**< Number of supported FMMUs. */
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    uint8_t base_sync_count; /**< Number of supported sync managers. */
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    uint8_t base_fmmu_bit_operation; /**< FMMU bit operation is supported. */
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    uint8_t base_dc_supported; /**< Distributed clocks are supported. */
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    ec_slave_dc_range_t base_dc_range; /**< DC range. */
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    uint8_t has_dc_system_time; /**< The slave supports the DC system time
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                                  register. Otherwise it can only be used for
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                                  delay measurement. */
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    uint32_t transmission_delay; /**< DC system time transmission delay
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                                   (offset from reference clock). */
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    // SII
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    uint16_t *sii_words; /**< Complete SII image. */
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    size_t sii_nwords; /**< Size of the SII contents in words. */
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1000
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    // Slave information interface
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    ec_sii_t sii; /**< Extracted SII data. */
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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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};
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/*****************************************************************************/
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// slave construction/destruction
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void ec_slave_init(ec_slave_t *, ec_master_t *, uint16_t, uint16_t);
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void ec_slave_clear(ec_slave_t *);
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void ec_slave_clear_sync_managers(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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325
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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_sync(ec_slave_t *, uint8_t); 
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423
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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_sdo_t *ec_slave_get_sdo_const(const ec_slave_t *, uint16_t);
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const ec_sdo_t *ec_slave_get_sdo_by_pos_const(const ec_slave_t *, uint16_t);
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uint16_t ec_slave_sdo_count(const ec_slave_t *);
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const ec_pdo_t *ec_slave_find_pdo(const ec_slave_t *, uint16_t);
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void ec_slave_attach_pdo_names(ec_slave_t *);
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void ec_slave_calc_port_delays(ec_slave_t *);
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void ec_slave_calc_transmission_delays_rec(ec_slave_t *, uint32_t *);
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39
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/*****************************************************************************/
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#endif