arch/m68k/kernel/irq.c

   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
  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         generic_handle_irq(irq);
  27         irq_exit();
  28
  29         set_irq_regs(oldregs);
  30 }
  31
  32 int show_interrupts(struct seq_file *p, void *v)
  33 {
  34         struct irqaction *ap;
  35         int irq = *((loff_t *) v);
  36
  37         if (irq == 0)
  38                 seq_puts(p, "           CPU0\n");
  39
  40         if (irq < NR_IRQS) {
  41                 struct irq_desc *desc = irq_to_desc(irq);
  42
  43                 ap = desc->action;
  44                 if (ap) {
  45                         seq_printf(p, "%3d: ", irq);
  46                         seq_printf(p, "%10u ", kstat_irqs(irq));
  47                         seq_printf(p, "%14s  ", irq_desc_get_chip(desc)->name);
  48
  49                         seq_printf(p, "%s", ap->name);
  50                         for (ap = ap->next; ap; ap = ap->next)
  51                                 seq_printf(p, ", %s", ap->name);
  52                         seq_putc(p, '\n');
  53                 }
  54         }
  55
  56         return 0;
  57 }
  58