linux/arch/m68knommu/kernel/irq.c
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   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
  21asmlinkage 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
  32void ack_bad_irq(unsigned int irq)
  33{
  34        printk(KERN_ERR "IRQ: unexpected irq=%d\n", irq);
  35}
  36
  37static struct irq_chip m_irq_chip = {
  38        .name           = "M68K-INTC",
  39        .enable         = enable_vector,
  40        .disable        = disable_vector,
  41        .ack            = ack_vector,
  42};
  43
  44void __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
  58int 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