master/globals.h
author Florian Pose <fp@igh-essen.com>
Thu, 20 Apr 2006 14:38:41 +0000
branchstable-1.0
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child 1618 5cff10efb927
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/******************************************************************************
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 *
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 *  g l o b a l s . h
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 *
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 *  Global definitions and macros.
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 *
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 *  $Id$
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 *
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 *****************************************************************************/
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#ifndef _EC_GLOBALS_
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#define _EC_GLOBALS_
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#include <linux/types.h>
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/******************************************************************************
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 *  EtherCAT master
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 *****************************************************************************/
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#define EC_MASTER_VERSION_MAIN  1
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#define EC_MASTER_VERSION_SUB   0
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#define EC_MASTER_VERSION_EXTRA "stable"
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/** maximum number of FMMUs per slave */
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#define EC_MAX_FMMUS 16
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/******************************************************************************
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 *  EtherCAT protocol
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 *****************************************************************************/
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/** maximum size of an EtherCAT frame (without header and CRC) */
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#define EC_MAX_FRAME_SIZE 1500
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/** ... minimum size */
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#define EC_MIN_FRAME_SIZE 46
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/** size of an EtherCAT frame header */
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#define EC_FRAME_HEADER_SIZE 2
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/** size of an EtherCAT command header */
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#define EC_COMMAND_HEADER_SIZE 10
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/** size of an EtherCAT command footer */
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#define EC_COMMAND_FOOTER_SIZE 2
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/** size of a sync manager configuration page */
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#define EC_SYNC_SIZE 8
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/** size of an FMMU configuration page */
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#define EC_FMMU_SIZE 16
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/** resulting maximum data size of a single command in a frame */
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#define EC_MAX_DATA_SIZE (EC_MAX_FRAME_SIZE - EC_FRAME_HEADER_SIZE \
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                          - EC_COMMAND_HEADER_SIZE - EC_COMMAND_FOOTER_SIZE)
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/*****************************************************************************/
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#define EC_INFO(fmt, args...) \
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    printk(KERN_INFO "EtherCAT: " fmt, ##args)
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#define EC_ERR(fmt, args...) \
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    printk(KERN_ERR "EtherCAT ERROR: " fmt, ##args)
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#define EC_WARN(fmt, args...) \
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    printk(KERN_WARNING "EtherCAT WARNING: " fmt, ##args)
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#define EC_DBG(fmt, args...) \
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    printk(KERN_DEBUG "EtherCAT DEBUG: " fmt, ##args)
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#define EC_LIT(X) #X
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#define EC_STR(X) EC_LIT(X)
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#define EC_SYSFS_READ_ATTR(NAME) \
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    static struct attribute attr_##NAME = { \
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        .name = EC_STR(NAME), .owner = THIS_MODULE, .mode = S_IRUGO \
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    }
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/*****************************************************************************/
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extern void ec_print_data(const uint8_t *, size_t);
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extern void ec_print_data_diff(const uint8_t *, const uint8_t *, size_t);
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/*****************************************************************************/
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/**
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   Code - Message pair.
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   Some EtherCAT commands support reading a status code to display a certain
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   message. This type allows to map a code to a message string.
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*/
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typedef struct
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{
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    uint32_t code; /**< code */
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    const char *message; /**< message belonging to \a code */
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}
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ec_code_msg_t;
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/*****************************************************************************/
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#endif
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