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5f97f7f9 HS |
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. | |
5f97f7f9 HS |
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 | */ | |
23 | void ack_bad_irq(unsigned int irq) | |
24 | { | |
25 | printk("unexpected IRQ %u\n", irq); | |
26 | } | |
27 | ||
e7ba176b HS |
28 | /* May be overridden by platform code */ |
29 | int __weak nmi_enable(void) | |
30 | { | |
31 | return -ENOSYS; | |
32 | } | |
33 | ||
34 | void __weak nmi_disable(void) | |
35 | { | |
36 | ||
37 | } | |
38 | ||
5f97f7f9 HS |
39 | #ifdef CONFIG_PROC_FS |
40 | int show_interrupts(struct seq_file *p, void *v) | |
41 | { | |
42 | int i = *(loff_t *)v, cpu; | |
43 | struct irqaction *action; | |
44 | unsigned long flags; | |
45 | ||
46 | if (i == 0) { | |
47 | seq_puts(p, " "); | |
48 | for_each_online_cpu(cpu) | |
49 | seq_printf(p, "CPU%d ", cpu); | |
50 | seq_putc(p, '\n'); | |
51 | } | |
52 | ||
53 | if (i < NR_IRQS) { | |
54 | spin_lock_irqsave(&irq_desc[i].lock, flags); | |
55 | action = irq_desc[i].action; | |
56 | if (!action) | |
57 | goto unlock; | |
58 | ||
59 | seq_printf(p, "%3d: ", i); | |
60 | for_each_online_cpu(cpu) | |
0b0f0b1c | 61 | seq_printf(p, "%10u ", kstat_irqs_cpu(i, cpu)); |
914ab062 | 62 | seq_printf(p, " %8s", irq_desc[i].chip->name ? : "-"); |
5f97f7f9 HS |
63 | seq_printf(p, " %s", action->name); |
64 | for (action = action->next; action; action = action->next) | |
65 | seq_printf(p, ", %s", action->name); | |
66 | ||
67 | seq_putc(p, '\n'); | |
68 | unlock: | |
69 | spin_unlock_irqrestore(&irq_desc[i].lock, flags); | |
70 | } | |
71 | ||
72 | return 0; | |
73 | } | |
74 | #endif |