include/asm-ia64/irq.h

   1 #ifndef _ASM_IA64_IRQ_H
   2 #define _ASM_IA64_IRQ_H
   3
   4 /*
   5  * Copyright (C) 1999-2000, 2002 Hewlett-Packard Co
   6  *      David Mosberger-Tang <davidm@hpl.hp.com>
   7  *      Stephane Eranian <eranian@hpl.hp.com>
   8  *
   9  * 11/24/98     S.Eranian       updated TIMER_IRQ and irq_canonicalize
  10  * 01/20/99     S.Eranian       added keyboard interrupt
  11  * 02/29/00     D.Mosberger     moved most things into hw_irq.h
  12  */
  13
  14 #define NR_IRQS         256
  15 #define NR_IRQ_VECTORS  NR_IRQS
  16
  17 #define IRQF_PERCPU     0x02000000
  18
  19 static __inline__ int
  20 irq_canonicalize (int irq)
  21 {
  22         /*
  23          * We do the legacy thing here of pretending that irqs < 16
  24          * are 8259 irqs.  This really shouldn't be necessary at all,
  25          * but we keep it here as serial.c still uses it...
  26          */
  27         return ((irq == 2) ? 9 : irq);
  28 }
  29
  30 extern void disable_irq (unsigned int);
  31 extern void disable_irq_nosync (unsigned int);
  32 extern void enable_irq (unsigned int);
  33 extern void set_irq_affinity_info (unsigned int irq, int dest, int redir);
  34
  35 #endif /* _ASM_IA64_IRQ_H */