irq.h

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#ifndef _ALPHA_IRQ_H
#define _ALPHA_IRQ_H

/*
 *  linux/include/alpha/irq.h
 *
 *  (C) 1994 Linus Torvalds
 */

#include <linux/linkage.h>

#if   defined(CONFIG_ALPHA_GENERIC)

/* Here NR_IRQS is not exact, but rather an upper bound.  This is used
   many places throughout the kernel to size static arrays.  That's ok,
   we'll use alpha_mv.nr_irqs when we want the real thing.  */

/* When LEGACY_START_ADDRESS is selected, we leave out:
     TITAN
     WILDFIRE
     MARVEL

   This helps keep the kernel object size reasonable for the majority
   of machines.
*/

# if defined(CONFIG_ALPHA_LEGACY_START_ADDRESS)
#  define NR_IRQS      (128)           /* max is RAWHIDE/TAKARA */
# else
#  define NR_IRQS      (32768 + 16)    /* marvel - 32 pids */
# endif

#elif defined(CONFIG_ALPHA_CABRIOLET) || \
      defined(CONFIG_ALPHA_EB66P)     || \
      defined(CONFIG_ALPHA_EB164)     || \
      defined(CONFIG_ALPHA_PC164)     || \
      defined(CONFIG_ALPHA_LX164)
# define NR_IRQS    35

#elif defined(CONFIG_ALPHA_EB66)      || \
      defined(CONFIG_ALPHA_EB64P)     || \
      defined(CONFIG_ALPHA_MIKASA)
# define NR_IRQS    32

#elif defined(CONFIG_ALPHA_ALCOR)     || \
      defined(CONFIG_ALPHA_MIATA)     || \
      defined(CONFIG_ALPHA_RUFFIAN)   || \
      defined(CONFIG_ALPHA_RX164)     || \
      defined(CONFIG_ALPHA_NORITAKE)
# define NR_IRQS    48

#elif defined(CONFIG_ALPHA_SABLE)     || \
      defined(CONFIG_ALPHA_SX164)
# define NR_IRQS    40

#elif defined(CONFIG_ALPHA_DP264) || \
      defined(CONFIG_ALPHA_LYNX)  || \
      defined(CONFIG_ALPHA_SHARK) || \
      defined(CONFIG_ALPHA_EIGER)
# define NR_IRQS    64

#elif defined(CONFIG_ALPHA_TITAN)
#define NR_IRQS     80

#elif defined(CONFIG_ALPHA_RAWHIDE) || \
    defined(CONFIG_ALPHA_TAKARA)
# define NR_IRQS    128

#elif defined(CONFIG_ALPHA_WILDFIRE)
# define NR_IRQS    2048 /* enuff for 8 QBBs */

#elif defined(CONFIG_ALPHA_MARVEL)
# define NR_IRQS    (32768 + 16)    /* marvel - 32 pids*/

#else /* everyone else */
# define NR_IRQS    16
#endif

static __inline__ int irq_canonicalize(int irq)
{
    /*
     * XXX is this true for all Alpha's?  The old serial driver
     * did it this way for years without any complaints, so....
     */
    return ((irq == 2) ? 9 : irq);
}

struct pt_regs;
extern void (*perf_irq)(unsigned long, struct pt_regs *);

#endif /* _ALPHA_IRQ_H */