1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * Based on arch/i386/kernel/irq.c
5 *   Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#include <linux/interrupt.h>
13#include <linux/irq.h>
14#include <linux/kernel_stat.h>
15#include <linux/proc_fs.h>
16#include <linux/seq_file.h>
17#include <linux/sysdev.h>
18
19/*
20 * 'what should we do if we get a hw irq event on an illegal vector'.
21 * each architecture has to answer this themselves.
22 */
23void ack_bad_irq(unsigned int irq)
24{
25	printk("unexpected IRQ %u\n", irq);
26}
27
28#ifdef CONFIG_PROC_FS
29int show_interrupts(struct seq_file *p, void *v)
30{
31	int i = *(loff_t *)v, cpu;
32	struct irqaction *action;
33	unsigned long flags;
34
35	if (i == 0) {
36		seq_puts(p, "           ");
37		for_each_online_cpu(cpu)
38			seq_printf(p, "CPU%d       ", cpu);
39		seq_putc(p, '\n');
40	}
41
42	if (i < NR_IRQS) {
43		spin_lock_irqsave(&irq_desc[i].lock, flags);
44		action = irq_desc[i].action;
45		if (!action)
46			goto unlock;
47
48		seq_printf(p, "%3d: ", i);
49		for_each_online_cpu(cpu)
50			seq_printf(p, "%10u ", kstat_cpu(cpu).irqs[i]);
51		seq_printf(p, " %8s", irq_desc[i].chip->name ? : "-");
52		seq_printf(p, "  %s", action->name);
53		for (action = action->next; action; action = action->next)
54			seq_printf(p, ", %s", action->name);
55
56		seq_putc(p, '\n');
57	unlock:
58		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
59	}
60
61	return 0;
62}
63#endif
64