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