1 /*
2 * irq.c
3 *
4 * (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com>
5 *
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file COPYING in the main directory of this archive
8 * for more details.
9 */
10
11 #include <linux/types.h>
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/kernel_stat.h>
15 #include <linux/interrupt.h>
16 #include <linux/irq.h>
17 #include <linux/seq_file.h>
18 #include <asm/system.h>
19 #include <asm/traps.h>
20
do_IRQ(int irq,struct pt_regs * regs)21 asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
22 {
23 struct pt_regs *oldregs = set_irq_regs(regs);
24
25 irq_enter();
26 __do_IRQ(irq);
27 irq_exit();
28
29 set_irq_regs(oldregs);
30 }
31
ack_bad_irq(unsigned int irq)32 void ack_bad_irq(unsigned int irq)
33 {
34 printk(KERN_ERR "IRQ: unexpected irq=%d\n", irq);
35 }
36
37 static struct irq_chip m_irq_chip = {
38 .name = "M68K-INTC",
39 .enable = enable_vector,
40 .disable = disable_vector,
41 .ack = ack_vector,
42 };
43
init_IRQ(void)44 void __init init_IRQ(void)
45 {
46 int irq;
47
48 init_vectors();
49
50 for (irq = 0; (irq < NR_IRQS); irq++) {
51 irq_desc[irq].status = IRQ_DISABLED;
52 irq_desc[irq].action = NULL;
53 irq_desc[irq].depth = 1;
54 irq_desc[irq].chip = &m_irq_chip;
55 }
56 }
57
show_interrupts(struct seq_file * p,void * v)58 int show_interrupts(struct seq_file *p, void *v)
59 {
60 struct irqaction *ap;
61 int irq = *((loff_t *) v);
62
63 if (irq == 0)
64 seq_puts(p, " CPU0\n");
65
66 if (irq < NR_IRQS) {
67 ap = irq_desc[irq].action;
68 if (ap) {
69 seq_printf(p, "%3d: ", irq);
70 seq_printf(p, "%10u ", kstat_irqs(irq));
71 seq_printf(p, "%14s ", irq_desc[irq].chip->name);
72
73 seq_printf(p, "%s", ap->name);
74 for (ap = ap->next; ap; ap = ap->next)
75 seq_printf(p, ", %s", ap->name);
76 seq_putc(p, '\n');
77 }
78 }
79
80 return 0;
81 }
82
83