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app/app-prime-modbus/include/fanet/socketcan/can/netlink.h 3.06 KB
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  /*
   * socketcan/can/netlink.h
   *
   * Definitions for the CAN netlink interface
   *
   * $Id: dev.h 939 2009-02-14 14:30:19Z wolf $
   *
   * Copyright (c) 2009 Wolfgang Grandegger <wg@grandegger.com>
   *
   * Send feedback to <socketcan-users@lists.berlios.de>
   *
   */
  
  #ifndef CAN_NETLINK_H
  #define CAN_NETLINK_H
  
  #include <linux/types.h>
  
  /*
   * CAN bit-timing parameters
   *
   * For futher information, please read chapter "8 BIT TIMING
   * REQUIREMENTS" of the "Bosch CAN Specification version 2.0"
   * at http://www.semiconductors.bosch.de/pdf/can2spec.pdf.
   */
  struct can_bittiming {
  	__u32 bitrate;		/* Bit-rate in bits/second */
  	__u32 sample_point;	/* Sample point in one-tenth of a percent */
  	__u32 tq;		/* Time quanta (TQ) in nanoseconds */
  	__u32 prop_seg;		/* Propagation segment in TQs */
  	__u32 phase_seg1;	/* Phase buffer segment 1 in TQs */
  	__u32 phase_seg2;	/* Phase buffer segment 2 in TQs */
  	__u32 sjw;		/* Synchronisation jump width in TQs */
  	__u32 brp;		/* Bit-rate prescaler */
  };
  
  /*
   * CAN harware-dependent bit-timing constant
   *
   * Used for calculating and checking bit-timing parameters
   */
  struct can_bittiming_const {
  	char name[16];		/* Name of the CAN controller hardware */
  	__u32 tseg1_min;	/* Time segement 1 = prop_seg + phase_seg1 */
  	__u32 tseg1_max;
  	__u32 tseg2_min;	/* Time segement 2 = phase_seg2 */
  	__u32 tseg2_max;
  	__u32 sjw_max;		/* Synchronisation jump width */
  	__u32 brp_min;		/* Bit-rate prescaler */
  	__u32 brp_max;
  	__u32 brp_inc;
  };
  
  /*
   * CAN clock parameters
   */
  struct can_clock {
  	__u32 freq;		/* CAN system clock frequency in Hz */
  };
  
  /*
   * CAN operational and error states
   */
  enum can_state {
  	CAN_STATE_ERROR_ACTIVE = 0,	/* RX/TX error count < 96 */
  	CAN_STATE_ERROR_WARNING,	/* RX/TX error count < 128 */
  	CAN_STATE_ERROR_PASSIVE,	/* RX/TX error count < 256 */
  	CAN_STATE_BUS_OFF,		/* RX/TX error count >= 256 */
  	CAN_STATE_STOPPED,		/* Device is stopped */
  	CAN_STATE_SLEEPING,		/* Device is sleeping */
  	CAN_STATE_MAX
  };
  
  /*
   * CAN bus error counters
   */
  struct can_berr_counter {
  	__u16 txerr;
  	__u16 rxerr;
  };
  
  /*
   * CAN controller mode
   */
  struct can_ctrlmode {
  	__u32 mask;
  	__u32 flags;
  };
  
  #define CAN_CTRLMODE_LOOPBACK		0x01	/* Loopback mode */
  #define CAN_CTRLMODE_LISTENONLY		0x02 	/* Listen-only mode */
  #define CAN_CTRLMODE_3_SAMPLES		0x04	/* Triple sampling mode */
  #define CAN_CTRLMODE_ONE_SHOT		0x08	/* One-Shot mode */
  #define CAN_CTRLMODE_BERR_REPORTING	0x10	/* Bus-error reporting */
  
  /*
   * CAN device statistics
   */
  struct can_device_stats {
  	__u32 bus_error;	/* Bus errors */
  	__u32 error_warning;	/* Changes to error warning state */
  	__u32 error_passive;	/* Changes to error passive state */
  	__u32 bus_off;		/* Changes to bus off state */
  	__u32 arbitration_lost; /* Arbitration lost errors */
  	__u32 restarts;		/* CAN controller re-starts */
  };
  
  /*
   * CAN netlink interface
   */
  enum {
  	IFLA_CAN_UNSPEC,
  	IFLA_CAN_BITTIMING,
  	IFLA_CAN_BITTIMING_CONST,
  	IFLA_CAN_CLOCK,
  	IFLA_CAN_STATE,
  	IFLA_CAN_CTRLMODE,
  	IFLA_CAN_RESTART_MS,
  	IFLA_CAN_RESTART,
  	IFLA_CAN_BERR_COUNTER,
  	__IFLA_CAN_MAX
  };
  
  #define IFLA_CAN_MAX	(__IFLA_CAN_MAX - 1)
  
  #endif /* CAN_NETLINK_H */