[root@armadillo (ttyAM0) ~]# [root@armadillo (ttyAM0) ~]# cat /mnt/dev_ht3070/ht3070.c
/*
 * ht3070.c
 *
 * Copyright (C) 2006 saekisan
 */

#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <asm/io.h>
#include <asm/uaccess.h>

#include "ht3070.h"

#undef  outb
#define outb(v,p)    __raw_writeb(v,__io(ISAIO8_BASE+p))
#undef  inb
#define inb(p)       __raw_readb(__io(ISAIO8_BASE+p))

#define MAX_HT3070 4
static unsigned int ht3070_portlist[MAX_HT3070] __initdata = {
  0x100, 0x110, 0x120, 0x130,
};
static int ht3070_foundlist[MAX_HT3070] __initdata = {
  0, 0, 0, 0,
};

#define CHRDEV    "ht3070"
#define VERSION   CHRDEV ": HT3070 driver, (C) 2006 saekisan"

static ssize_t ht3070_read (struct file *file, char *buf, size_t count,
			    loff_t *ppos)
{
  unsigned int minor  = MINOR(file->f_dentry->d_inode->i_rdev);
  int          devno  = minor / 16;
  int          portno = minor % 16;
  char         tmp;
  
  if (MAX_HT3070 <= devno || 15 <= portno) {
    return -ENODEV;
  }
  if (!ht3070_foundlist[devno]) {
    return -ENODEV;
  }
  
  tmp = inb (ht3070_portlist[devno] + portno);
  
  if (put_user (tmp, buf)) {
    return -EFAULT;
  }
  return 1;
}

static ssize_t ht3070_write (struct file *file, const char *buf, size_t count,
			     loff_t *ppos)
{
  unsigned int minor  = MINOR(file->f_dentry->d_inode->i_rdev);
  int          devno  = minor / 16;
  int          portno = minor % 16;
  
  if (MAX_HT3070 <= devno || 15 <= portno) {
    return -ENODEV;
  }
  if (!ht3070_foundlist[devno]) {
    return -ENODEV;
  }
  
  outb (buf[0], ht3070_portlist[devno] + portno);
  
  return 1;
}

static struct file_operations ht3070_fops = {
  owner: THIS_MODULE,
  read:  ht3070_read,
  write: ht3070_write,
};

static int ht3070_probe (unsigned int port)
{
  int i=0;
  if (inb (port + 8) != 0xff) {
	    printk (": port8 : not0xff\n");

    return -1;
  }
  if (inb (port + 9) != 0xff) {
	    printk (": port9 : not0xff\n");
    return -1;
  }
  if (inb (port + 10) != 0xff) {
	    printk (": port10 : not0xff\n");
    return -1;
  }
  if (inb (port + 11) != 0xff) {
	    printk (": port11 : not0xff\n");
    return -1;
  }
  if (inb (port + 12) != 0xff) {
	    printk (": port12 : not0xff\n");
    return -1;
  }
  if (inb (port + 13) != 0xff) {
	    printk (": port13 : not0xff\n");
    return -1;
  }
  if (inb (port + 14) != 0xff) {
	    printk (": port14 : not0xff\n");
    return -1;
  }
for (i = 0; i < 16; i++) { 
  outb (0x00, port + i);
 }
  if (inb (port + 8) != 0x00) {
	    printk (": port8- : cannot set to 0x00\n");
    return -1;
  }

	    printk ( ": port0-7 all set to OUTport \n");
 
  return 0;
}

#ifdef MODULE
static int io[MAX_HT3070];
MODULE_PARM(io, "1-" __MODULE_STRING(MAX_HT3070) "i");
#endif

int __init ht3070_init (void)
{
  int i, count = 0;
#ifdef MODULE
  int j;
#endif
  
#ifdef MODULE
  if (!io[0]) {
    printk (KERN_WARNING CHRDEV ": Append io=0xNNN.\n");
    return -ENXIO;
  }
#endif
  for (i = 0; i < MAX_HT3070; i++) {
#ifdef MODULE
    for (j = 0; j < MAX_HT3070; j++) {
      if (io[j] == ht3070_portlist[i]) {
	break;
      }
    }
    if (j >= MAX_HT3070) {
      continue;
    }
#endif
    if (!ht3070_probe (ht3070_portlist[i])) {
      ht3070_foundlist[i] = 1;
      count++;
    }
  }
  if (!count) {
    printk (KERN_WARNING CHRDEV ": HT3070 is not found.\n");
    return -EIO;
  }
  
  for (i = 0; i < MAX_HT3070; i++) {
    if (ht3070_foundlist[i]) {
      if (!request_region (ISAIO8_BASE + ht3070_portlist[i], 16, CHRDEV)) {
#ifdef MODULE
	printk (KERN_WARNING CHRDEV ": I/O port 0x%x-0x%x is not free.\n",
		ISAIO8_BASE + ht3070_portlist[i],
		ISAIO8_BASE + ht3070_portlist[i] + 15);
#endif
	ht3070_foundlist[i] = 0;
	count--;
	if (!count) {
	  for (i--; i >= 0; i--) {
	    if (ht3070_foundlist[i]) {
	      release_region (ISAIO16_BASE + ht3070_portlist[i], 16);
	      release_region (ISAIO8_BASE + ht3070_portlist[i], 16);
	    }
	  }
	  return -EIO;
	}
	continue;
      }
      if (!request_region (ISAIO16_BASE + ht3070_portlist[i], 16, CHRDEV)) {
#ifdef MODULE
	printk (KERN_WARNING CHRDEV ": I/O port 0x%x-0x%x is not free.\n",
		ISAIO16_BASE + ht3070_portlist[i],
		ISAIO16_BASE + ht3070_portlist[i] + 15);
#endif
	release_region (ISAIO8_BASE + ht3070_portlist[i], 16);
	ht3070_foundlist[i] = 0;
	count--;
	if (!count) {
	  for (i--; i >= 0; i--) {
	    if (ht3070_foundlist[i]) {
	      release_region (ISAIO16_BASE + ht3070_portlist[i], 16);
	      release_region (ISAIO8_BASE + ht3070_portlist[i], 16);
	    }
	  }
	  return -EIO;
	}
      }
    }
  }
  
  if (register_chrdev (HT3070_MAJOR, CHRDEV, &ht3070_fops)) {
    printk (KERN_WARNING CHRDEV ": Unable to get major %d.\n", HT3070_MAJOR);
    for (i = MAX_HT3070 - 1; i >= 0; i--) {
      if (ht3070_foundlist[i]) {
	release_region (ISAIO16_BASE + ht3070_portlist[i], 16);
	release_region (ISAIO8_BASE + ht3070_portlist[i], 16);
      }
    }
    return -EIO;
  }
  
  printk (KERN_INFO VERSION "\n");
  return 0;
}

void __exit ht3070_cleanup (void)
{
  int i;
  
  unregister_chrdev (HT3070_MAJOR, CHRDEV);
  for (i = MAX_HT3070 - 1; i >= 0; i--) {
    if (ht3070_foundlist[i]) {
      release_region (ISAIO16_BASE + ht3070_portlist[i], 16);
      release_region (ISAIO8_BASE + ht3070_portlist[i], 16);
    }
  }
}

module_init (ht3070_init);
module_exit (ht3070_cleanup);
/*
	 参考：　insmod ht3070.o io=0x110 で組み込んで下さい
	 HT3070ボードの 占有I/O アドレスは　SA[10:4] で設定します
	 0x110　では　SA[10:4]=[0010001]というジャンパ設定です
	 0x110〜0x11f　の　16バイト占有となります
 */
[root@armadillo (ttyAM0) ~]#