LXR linux/arch/alpha/include/asm/irq.h

   1#ifndef _ALPHA_IRQ_H
   2#define _ALPHA_IRQ_H
   3
   4/*
   5 *      linux/include/alpha/irq.h
   6 *
   7 *      (C) 1994 Linus Torvalds
   8 */
   9
  10#include <linux/linkage.h>
  11
  12#if   defined(CONFIG_ALPHA_GENERIC)
  13
  14/* Here NR_IRQS is not exact, but rather an upper bound.  This is used
  15   many places throughout the kernel to size static arrays.  That's ok,
  16   we'll use alpha_mv.nr_irqs when we want the real thing.  */
  17
  18/* When LEGACY_START_ADDRESS is selected, we leave out:
  19     TITAN
  20     WILDFIRE
  21     MARVEL
  22
  23   This helps keep the kernel object size reasonable for the majority
  24   of machines.
  25*/
  26
  27# if defined(CONFIG_ALPHA_LEGACY_START_ADDRESS)
  28#  define NR_IRQS      (128)           /* max is RAWHIDE/TAKARA */
  29# else
  30#  define NR_IRQS      (32768 + 16)    /* marvel - 32 pids */
  31# endif
  32
  33#elif defined(CONFIG_ALPHA_CABRIOLET) || \
  34      defined(CONFIG_ALPHA_EB66P)     || \
  35      defined(CONFIG_ALPHA_EB164)     || \
  36      defined(CONFIG_ALPHA_PC164)     || \
  37      defined(CONFIG_ALPHA_LX164)
  38# define NR_IRQS        35
  39
  40#elif defined(CONFIG_ALPHA_EB66)      || \
  41      defined(CONFIG_ALPHA_EB64P)     || \
  42      defined(CONFIG_ALPHA_MIKASA)
  43# define NR_IRQS        32
  44
  45#elif defined(CONFIG_ALPHA_ALCOR)     || \
  46      defined(CONFIG_ALPHA_MIATA)     || \
  47      defined(CONFIG_ALPHA_RUFFIAN)   || \
  48      defined(CONFIG_ALPHA_RX164)     || \
  49      defined(CONFIG_ALPHA_NORITAKE)
  50# define NR_IRQS        48
  51
  52#elif defined(CONFIG_ALPHA_SABLE)     || \
  53      defined(CONFIG_ALPHA_SX164)
  54# define NR_IRQS        40
  55
  56#elif defined(CONFIG_ALPHA_DP264) || \
  57      defined(CONFIG_ALPHA_LYNX)  || \
  58      defined(CONFIG_ALPHA_SHARK) || \
  59      defined(CONFIG_ALPHA_EIGER)
  60# define NR_IRQS        64
  61
  62#elif defined(CONFIG_ALPHA_TITAN)
  63#define NR_IRQS         80
  64
  65#elif defined(CONFIG_ALPHA_RAWHIDE) || \
  66        defined(CONFIG_ALPHA_TAKARA)
  67# define NR_IRQS        128
  68
  69#elif defined(CONFIG_ALPHA_WILDFIRE)
  70# define NR_IRQS        2048 /* enuff for 8 QBBs */
  71
  72#elif defined(CONFIG_ALPHA_MARVEL)
  73# define NR_IRQS        (32768 + 16)    /* marvel - 32 pids*/
  74
  75#else /* everyone else */
  76# define NR_IRQS        16
  77#endif
  78
  79static __inline__ int irq_canonicalize(int irq)
  80{
  81        /*
  82         * XXX is this true for all Alpha's?  The old serial driver
  83         * did it this way for years without any complaints, so....
  84         */
  85        return ((irq == 2) ? 9 : irq);
  86}
  87
  88struct pt_regs;
  89extern void (*perf_irq)(unsigned long, struct pt_regs *);
  90
  91#endif /* _ALPHA_IRQ_H */
  92