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        2048 /* enuff for WILDFIRE with 8 QBBs */
  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_XLT)       || \
  35       defined(CONFIG_ALPHA_MIATA)     || \
  36       defined(CONFIG_ALPHA_RUFFIAN)   || \
  37       defined(CONFIG_ALPHA_RX164)     || \
  38       defined(CONFIG_ALPHA_NORITAKE)
  39 # define NR_IRQS        48
  40
  41 #elif defined(CONFIG_ALPHA_SABLE)     || \
  42       defined(CONFIG_ALPHA_SX164)
  43 # define NR_IRQS        40
  44
  45 #elif defined(CONFIG_ALPHA_DP264) || \
  46       defined(CONFIG_ALPHA_EIGER)
  47 # define NR_IRQS        64
  48
  49 #elif defined(CONFIG_ALPHA_TITAN)
  50 #define NR_IRQS         80
  51
  52 #elif defined(CONFIG_ALPHA_RAWHIDE) || \
  53         defined(CONFIG_ALPHA_TAKARA)
  54 # define NR_IRQS        128
  55
  56 #elif defined(CONFIG_ALPHA_WILDFIRE)
  57 # define NR_IRQS        2048 /* enuff for 8 QBBs */
  58
  59 #else /* everyone else */
  60 # define NR_IRQS        16
  61 #endif
  62
  63 static __inline__ int irq_cannonicalize(int irq)
  64 {
  65         /*
  66          * XXX is this true for all Alpha's?  The old serial driver
  67          * did it this way for years without any complaints, so....
  68          */
  69         return ((irq == 2) ? 9 : irq);
  70 }
  71
  72 extern void disable_irq(unsigned int);
  73 extern void disable_irq_nosync(unsigned int);
  74 extern void enable_irq(unsigned int);
  75
  76 struct pt_regs;
  77 extern void (*perf_irq)(unsigned long, struct pt_regs *);
  78
  79
  80 #endif /* _ALPHA_IRQ_H */