can--installing can interrupt handler

[zhoupeng]

hello,
These day , I work on a can device driver. When i debug this can device driver on PC104(i386) .I found my device driver can not work well. Specifically when  I run a test programe with this device driver, I find this driver can't install because of "installing can interrupt handler".
who can tell how to solve this problem.Thank you!
Best wish!
zhoupeng
 
 
Some code about Interrupt:
/*
 *Handle an CAN interrupt. 
 */
static void
can_interrupt_handler (rtems_irq_hdl_param ignored)
{
#ifdef DEBUG_CAN
  printk("\n!***********!\n");
#endif
  printk("\n!###########!\n");
  unsigned char buf[13];  /*beautiful*/
 int intrkind;
        log_flag = 1;
 
 intrkind=read_sja(3);
 
 if((intrkind & 0x01) == 0){/*ÖжόĎæÆ÷œÓÊÕλûÓб»ÖÃ룬ŒÈûÓвúÉúœÓÊÕÖжÏ*/
  goto out;
 }
 Receive(buf);  /*ÕâÀïÖ»ÄÜœÓÊÕÒ»Ö¡ÊýŸÝ£¬Èç¹ûœÓÊÕfifo·Ç¿Õ£¬Öжϱ£³Ö£¡ÊýŸÝÈ¡×ߺó£¬fifoÊÇ·ñ»áÇå¿ÕÈ¡×ߵIJ¿·Ö*/
// printk("int1 : %2x %2x %2x %2x %2x\n",buf[0],buf[1],buf[2],buf[3],buf[4]);
 if(log_flag)
  in_rd_buf(buf); //buffer this frame
out:
 write_sja(1,4); //Release sja receive buffer of FIFO. if there are data in FIFO, INT signal will be set
// *(volatile unsigned long*)(MCF_MBAR + 0x20) |= 0x80000000;//clear pending bit
 //clear interrupt
  printk("\n!***********!\n");
}
/*
 *Turn CAN interrupts on.
 */
static void
isr_on(const rtems_irq_connect_data *unused)
{
  return;
}
/*
 *Turn CAN interrupts off.  See can_interrupt_on. 
 */
static void
isr_off(const rtems_irq_connect_data *unused)
{
  return;
}
/*
 *Return whether CAN interrupts are on. 
 */
static int
isr_is_on(const rtems_irq_connect_data *irq)
{
  return BSP_irq_enabled_at_i8259s(irq->name);
}
/*
 * Interrupt structure for can
 */
static rtems_irq_connect_data can_isr_data =
{
  CAN_IRQ_VECTOR,
  can_interrupt_handler,
  0,
  isr_on,
  isr_off,
  isr_is_on};

rtems_device_driver
CAN_initialize(rtems_device_major_number major,
              rtems_device_minor_number minor,
              void                        *arg)
{
  rtems_status_code status;
 
  /*
   * Set CAN2 BASEADDRESS AND INTERRUPT NUMBER
   */
  outport_byte(BASE+0,6);
  outport_byte(BASE+1,0xD4);
  outport_byte(BASE+0,7);
  outport_byte(BASE+1,0x00);
  outport_byte(BASE+0,13);
  outport_byte(BASE+1,0xC0);
 
  /*
   * DO device-specific initialization
   */
  SJA_init();
  status = BSP_install_rtems_irq_handler( &can_isr_data );
  if( !status )
  {
    printk("Error installing can interrupt handler!\n");
    rtems_fatal_error_occurred(status);
  }
 
  /*
   * init read buffer
   */
  init_rd_buf();
 
  /*
   * Register the device
   */
  status = rtems_io_register_name ("/dev/CAN", major, 0);
  if (status != RTEMS_SUCCESSFUL)
  {
      printk("Error registering CAN device!\n");
      rtems_fatal_error_occurred (status);
  }
  printk("Device: /dev/CAN initialized.\n");
 
  return RTEMS_SUCCESSFUL;
}
 
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