sjacan.h

CAN在linux下的驱动程序znsoft

#define SJA_MAJOR       90
#define SJA_NUM         2

#define SJA_CMD_PORT    0x324
#define SJA1_DAT_PORT   0x325
#define SJA2_DAT_PORT   0x326


#define SJA_MODE	0x00
#define SJA_CMR		0x01
#define SJA_SR		0x02
#define SJA_IR		0x03
#define SJA_IE		0x04

#define SJA_BTR0	0x06
#define SJA_BTR1	0x07
#define SJA_OCR		0x08
#define SJA_ECC		0x0C
#define SJA_TXBUF	0x10
#define SJA_RXBUF	0x10
#define SJA_ACR0	0x10
#define SJA_ACR1	0x11
#define SJA_ACR2	0x12
#define SJA_ACR3	0x13
#define SJA_AMR0	0x14
#define SJA_AMR1	0x15
#define SJA_AMR2	0x16
#define SJA_AMR3	0x17
#define SJA_CDR		0x1F

#define BUFSIZ          4000

#define SJA_READ(addr,data_port) ({ \
        outb_p(addr,SJA_CMD_PORT); \
        inb_p(data_port); \
        })

#define SJA_WRITE(val,addr,data_port)    ({ \
        outb_p(addr,SJA_CMD_PORT); \
        outb_p(val,data_port); \
        })

struct SJA_device {
       struct tq_struct     *recv_bottom_task;
       unsigned char       *RecvBuf;
       volatile unsigned long RecvHead;
       volatile unsigned long RecvTail;
       volatile unsigned long RecvNum;
       struct wait_queue   *RecvQueue;
       unsigned int         IrqNum;
       volatile unsigned char   lock;
       unsigned char     Block;

       unsigned int      PortNum;/*device minor number*/
       unsigned int      FrameMode;
       unsigned int      BaudRate;
       unsigned int      DMA;     //8=no ,0=1,...7=7;
       unsigned int      FIFOEnable;
       unsigned int      TriggerLevel;
       unsigned int      ref_count;
       unsigned char     *SendBuf;
       unsigned int      SendNum;
       unsigned long volatile SendHead;
       volatile unsigned long SendTail;
       struct wait_queue *SendQueue;

       struct timer_list *timer;
       int TimerCount;
} __attribute__((aligned(L1_CACHE_BYTES),packed));