LXR linux-old/include/asm-mips/irq.h

   1/*
   2 * This file is subject to the terms and conditions of the GNU General Public
   3 * License.  See the file "COPYING" in the main directory of this archive
   4 * for more details.
   5 *
   6 * Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle
   7 * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02 by Ralf Baechle
   8 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
   9 * Copyright (C) 2001 Kanoj Sarcar
  10 */
  11#ifndef _ASM_IRQ_H
  12#define _ASM_IRQ_H
  13
  14#include <linux/config.h>
  15#include <linux/linkage.h>
  16
  17#define NR_IRQS 128             /* Largest number of ints of all machines.  */
  18
  19#ifdef CONFIG_I8259
  20static inline int irq_cannonicalize(int irq)
  21{
  22        return ((irq == 2) ? 9 : irq);
  23}
  24#else
  25#define irq_cannonicalize(irq) (irq)    /* Sane hardware, sane code ... */
  26#endif
  27
  28extern void disable_irq(unsigned int);
  29extern void disable_irq_nosync(unsigned int);
  30extern void enable_irq(unsigned int);
  31
  32struct pt_regs;
  33extern asmlinkage unsigned int do_IRQ(int irq, struct pt_regs *regs);
  34
  35/* Machine specific interrupt initialization  */
  36extern void (*irq_setup)(void);
  37
  38extern void init_generic_irq(void);
  39
  40#endif /* _ASM_IRQ_H */
  41