can.h

HMS30C7202下的CAN驱动

/**
 * This file include general can definitions for the candrv
 *
 * Written by Sebastian Stolzenberg email:[e-mail]
 * Version 1.0  04 Feb 2003
 */

#ifndef ___CAN_INCLUDE___
# define ___CAN_INCLUDE___

#include <linux/types.h>
#include <linux/ioctl.h>

/**
 * Length of can message
 */
# define CAN_MSG_LENGTH 8

/**
 * Definition of can message structure
 */
struct canmsg_t
{
        __u32 flags;                    /* flags for packet */
        __u32 id;                       /* id for frame */
        long timestamp_sec;             /* seconds timestamp of frame */
        long timestamp_usec;            /* microseconds timestamp of frame */
        __u8 length;                    /* length for data part of frame */
        __u8 data[ CAN_MSG_LENGTH ];    /* can frame data */
} PACKED;

/**
   Structure for statistics
*/
struct canstatistics_t
{
        __u32 cntRxPkt;         /* Counter for received packets. */
        __u32 cntRxData;        /* Counter for received data bytes. */
        __u32 cntTxPkt;         /* Counter for sent packets. */
        __u32 cntTxData;        /* Counter for sent data bytes. */
        __u32 cntWarnings;      /* Counter for chip warning states. */
        __u32 cntErrPassive;    /* Counter for chip error passive mode entries. */
        __u32 cntBusOff;        /* Counter for chip bus off conditions. */
        __u32 cntMsgLst;        /* Counter for chips lost messages. */
        __u32 cntRxFifoOvr;     /* Counter for Rx FIFO overruns. */
        __u32 cntTxFifoOvr;     /* Counter for transmitter overruns (if NONBLOCK). */
        __u32 cntStuffErr;      /* Counter for stuff errors. */
        __u32 cntFormErr;       /* Counter for form erros. */
        __u32 cntAckErr;        /* Counter for ACK errors. */
        __u32 cntBit0Err;       /* Counter for Bit 0 errors. */
        __u32 cntBit1Err;       /* Counter for Bit 1 errors. */
        __u32 cntCrcErr;        /* Counter for CRC errors. */
};



/**
   Definition of a CAN frame types.
*/
typedef unsigned long canframetype_t;

/**
   Definition of a CAN message.
*/
typedef unsigned long canmsgid_t;

/* Definitions to use for canmsg_t flags */
# define MSG_RTR ( 1<<0 )  /* RTR-Flag */

/* CAN ioctl magic number */
# define CAN_IOC_MAGIC 'z' /* AKHE changed from 'd' to 'z' ioctl.txt */

/**
   CAN ioctl functions
*/

/**
   Sets the speed at which characters are sent over the CAN net.
   Format of data is defined by type CanDrvBaudrate.
*/
# define IOCTL_CAN_SET_BAUDRATE _IOW( CAN_IOC_MAGIC, 1, __u16 )

/**
   Enable Extended Mode
 */
# define IOCTL_CAN_ENABLE_EXTMODE _IO( CAN_IOC_MAGIC, 2)

/**
   Disable Extended Mode
 */
# define IOCTL_CAN_DISABLE_EXTMODE _IO( CAN_IOC_MAGIC, 3)

/**
  Sets the message object in reception mode for messages with the given id
*/
# define IOCTL_CAN_SET_READ_MODE _IOW(CAN_IOC_MAGIC, 4, __u32)

/**
   Set filter
 */
# define IOCTL_CAN_SET_FILTER _IOW( CAN_IOC_MAGIC, 5, __u32 )

/**
   Disable filter
 */
# define IOCTL_CAN_DISABLE_FILTER _IO( CAN_IOC_MAGIC, 7)

/**
   Dump registers to the syslog
 */
# define IOCTL_CAN_DUMP_REG _IO( CAN_IOC_MAGIC, 8 )

/**
   Get the status byte
 */
# define IOCTL_CAN_GET_STATUS _IOR( CAN_IOC_MAGIC, 9, __u32  )

/**
   Get Statistic-Structure.
*/
# define IOCTL_CAN_GET_STATISTICS _IOR( CAN_IOC_MAGIC, 10, sizeof(struct canstatistics_t) )

/**
   Print Statistic-Structure as kernel notice.
*/
# define IOCTL_CAN_PRINT_STATISTICS _IO( CAN_IOC_MAGIC, 11 )

/**
   Resets the performance statistics for the device.
   No data is supplied.
*/
# define IOCTL_CAN_CLEAR_STATISTICS _IO( CAN_IOC_MAGIC, 12 )

#endif