#include  "fx469.h"static int	read_fx469(struct file *files,char *buf,size_t count,loff_t *f_pos){  int left;  if(verify_area(VERIFY_WRITE,buf,count)==-EFAULT)  {      printk("user space can not be writed\n");      return -EFAULT;  }  user_read_count=count;  fx469_read_bit_count=0;  interruptible_sleep_on(&fx469_read_queue);  left=copy_to_user(buf,fx469_read_buf,count);  if(left<0)  {      printk("copy data to user error\n");      return -EFAULT;  }  return count;}static int	write_fx469(struct file *files,const char *buf,size_t count,loff_t *f_pos){/*  int i,j;  char *temp_buf;  printk("<0>the boy write data to fx469\n");  printk("<0>count=%d\n",count);  if((count<=0)||(count>100))  {      temp_buf=kmalloc(50,GFP_KERNEL);  }  else  {      temp_buf=kmalloc(count,GFP_KERNEL);  }  if(!temp_buf)  {    printk("<0>kmalloc temp_buf error\n");    return  -EFAULT;  }    if(copy_from_user(temp_buf,buf,count))*/  if(copy_from_user(fx469_write_buf,buf,count))  {    printk("<0>copy_from_user error\n");    return -EFAULT;  }/*  for(i=0;i<count;i++)   printk("%d  ",*(temp_buf+i));  printk("<0>\n");  for(i=0;i<(count/8);i++)  {    printk("\ni=%d\n",i);    for(j=0;j<64;j++)    {      if((*(task_ptr+i))&0x8000000000000000)        printk("1 ");      else        printk("0 ");      *(task_ptr+i)=(*(task_ptr+i))<<1;    }  }*/  fx469_write_data1=*(write_task_ptr);  fx469_write_data2=*(write_task_ptr+1);  fx469_write_bit_count=0;  interruptible_sleep_on(&fx469_write_queue);  //  kfree(temp_buf);  return count;}static int 	open_fx469(struct inode *node,struct file *files){  MOD_INC_USE_COUNT;  write_task_ptr=(ullong *)fx469_write_buf;  read_task_ptr=(ullong *)fx469_read_buf;  printk("<0>someone open fx469\n");  return 0;}static	int	release_fx469(struct inode *node,struct file *files){  MOD_DEC_USE_COUNT;  printk("<0>the boy close fx469\n");  return 0;}//fx469 write interrupt servicevoid	fx469_write_service(int irq,void *dev_id,struct pt_regs *regs){  CLEAR_PEND_INT(FX469_WRITE_IRQ);  if(set_led2)	{		set_led2=0;		SET_IOPDATA(1);	}	else	{		set_led2=1;		CLEAR_IOPDATA(1);	}/*  irq_count++;  if(irq_count>=200)    irq_count=0;  fx469_read_buf[irq_count%10]=irq_count;  if((irq_count%10)==9)  {      printk("<0>wake up read\n");      wake_up_interruptible(&fx469_read_queue);  }*/  if(fx469_write_bit_count<64)  {    if(fx469_write_data1&0x8000000000000000)      SET_IOPDATA(FX469_WRITE_BIT);    else      CLEAR_IOPDATA(FX469_WRITE_BIT);    fx469_write_data1=fx469_write_data1<<1;  }  else  {    if(fx469_write_data2&0x8000000000000000)      SET_IOPDATA(FX469_WRITE_BIT);    else      CLEAR_IOPDATA(FX469_WRITE_BIT);    fx469_write_data2=fx469_write_data2<<1;  }  fx469_write_bit_count++;  if(fx469_write_bit_count>=128)  {    fx469_write_bit_count=0;    wake_up_interruptible(&fx469_write_queue);  }}//fx469 read interrupt servicevoid	fx469_read_service(int irq,void *dev_id,struct pt_regs *regs){  long temp;  CLEAR_PEND_INT(FX469_READ_IRQ);  temp=IOPDATA;  temp&=(1<<(FX469_READ_BIT));  if(fx469_read_bit_count<64)  {    fx469_read_data1=fx469_read_data1<<1;    if(temp)      fx469_read_data1|=1;  }  else  {    fx469_read_data2=fx469_read_data2<<1;    if(temp)      fx469_read_data2|=1;  }  fx469_read_bit_count++;  if(fx469_read_bit_count>127)  {    fx469_read_bit_count=0;    *(read_task_ptr)=fx469_read_data1;    *(read_task_ptr+1)=fx469_read_data2;    wake_up_interruptible(&fx469_read_queue);  }    if(set_led2)  {    set_led2=0;    SET_IOPDATA(1);  }  else  {    set_led2=1;    CLEAR_IOPDATA(1);  }/*    irq_count++;  if(irq_count>=200)    irq_count=0;  fx469_read_buf[irq_count%10]=irq_count;  if((irq_count%10)==9)  {//      printk("<0>wake up read\n");      wake_up_interruptible(&fx469_read_queue);  }*/  }void init_fx469(void){  int result;  result=register_chrdev(254,"fx469",&fx469_files);  CLEAR_PEND_INT(FX469_READ_IRQ);  result=request_irq(FX469_READ_IRQ,fx469_read_service,SA_INTERRUPT,"fx469_read",NULL);  INT_ENABLE(FX469_READ_IRQ);  CLEAR_PEND_INT(FX469_WRITE_IRQ);  result=request_irq(FX469_WRITE_IRQ,fx469_write_service,SA_INTERRUPT,"fx469_write",NULL);  INT_ENABLE(FX469_WRITE_IRQ);    irq_count=0;  fx469_buf_count=0;  user_read_count=0;  fx469_write_count=0;  printk("<0>request irq 0 1 \n");}