/* * Copyright 1999 Pavel Machek, distribute under GPL version 2 or later. * * This converts interrupt into signal */#include <linux/module.h>#include <linux/kernel.h>#include <linux/types.h>#include <linux/skbuff.h>#include <linux/netdevice.h>#include <linux/ioport.h>#include <linux/delay.h>#include <linux/malloc.h>#include <linux/init.h>#include <linux/signal.h>#include <linux/errno.h>#include <linux/mm.h>#include <linux/poll.h>#include <linux/miscdevice.h>#include <linux/random.h>#include <linux/wait.h>#include <linux/fs.h>#include <linux/tty_driver.h>#include <linux/tty_flip.h>#include <linux/kbd_kern.h>#include <linux/pci.h>#include <net/irda/irda_device.h>#include <asm/io.h>#include <asm/dma.h>#include <asm/byteorder.h>#include <asm/uaccess.h>#include <asm/system.h>#include <asm/irq.h>#define ID printk( "n2cd: " )#define MAXDEVS 64#define DEBUG_OUTPUT 0MODULE_AUTHOR("Pavel Machek <pavel@suse.cz>");static int pid = 0;MODULE_PARM(pid, "i");static int irq = 3;MODULE_PARM(irq, "i");static void enable_now_do(unsigned long unused){#if DEBUG_OUTPUT == 1	printk( "enough time, enabling interrupt..." );#endif	enable_irq(irq);#if DEBUG_OUTPUT == 1	printk( "enabled\n" );#endif}static struct timer_list enable_now_timer = {NULL, NULL, 0, 0, enable_now_do};static voidinterrupt( int irq, void *dev_id, struct pt_regs *regs ){#if DEBUG_OUTPUT == 1	printk( "Interrupt %d came...", irq );#endif	kill_proc(pid, SIGUSR1, 1);	disable_irq(irq);        enable_now_timer.expires = jiffies + HZ;        enable_now_timer.prev = enable_now_timer.next = NULL;        add_timer(&enable_now_timer);#if DEBUG_OUTPUT == 1	printk( "ok\n" );#endif}#ifdef MODULEint init_module(void){	printk( "i2sig: V0.1.0, copyright 1999 Pavel Machek\n" );        if (request_irq( irq, interrupt, SA_SHIRQ, "i2sig", (void *) &irq)) {                printk( "Can not get IRQ\n" );                return -EAGAIN;        }	printk( "Success." );	return 0;}void cleanup_module(void){	free_irq(irq, (void *) &irq);}#endif