include/asm-parisc/irq.h

   1 /*
   2  * include/asm-parisc/irq.h
   3  *
   4  * Copyright 2005 Matthew Wilcox <matthew@wil.cx>
   5  */
   6
   7 #ifndef _ASM_PARISC_IRQ_H
   8 #define _ASM_PARISC_IRQ_H
   9
  10 #include <linux/cpumask.h>
  11 #include <asm/types.h>
  12
  13 #define NO_IRQ          (-1)
  14
  15 #ifdef CONFIG_GSC
  16 #define GSC_IRQ_BASE    16
  17 #define GSC_IRQ_MAX     63
  18 #define CPU_IRQ_BASE    64
  19 #else
  20 #define CPU_IRQ_BASE    16
  21 #endif
  22
  23 #define TIMER_IRQ       (CPU_IRQ_BASE + 0)
  24 #define IPI_IRQ         (CPU_IRQ_BASE + 1)
  25 #define CPU_IRQ_MAX     (CPU_IRQ_BASE + (BITS_PER_LONG - 1))
  26
  27 #define NR_IRQS         (CPU_IRQ_MAX + 1)
  28
  29 static __inline__ int irq_canonicalize(int irq)
  30 {
  31         return (irq == 2) ? 9 : irq;
  32 }
  33
  34 struct irq_chip;
  35
  36 /*
  37  * Some useful "we don't have to do anything here" handlers.  Should
  38  * probably be provided by the generic code.
  39  */
  40 void no_ack_irq(unsigned int irq);
  41 void no_end_irq(unsigned int irq);
  42 void cpu_ack_irq(unsigned int irq);
  43 void cpu_end_irq(unsigned int irq);
  44
  45 extern int txn_alloc_irq(unsigned int nbits);
  46 extern int txn_claim_irq(int);
  47 extern unsigned int txn_alloc_data(unsigned int);
  48 extern unsigned long txn_alloc_addr(unsigned int);
  49 extern unsigned long txn_affinity_addr(unsigned int irq, int cpu);
  50
  51 extern int cpu_claim_irq(unsigned int irq, struct irq_chip *, void *);
  52 extern int cpu_check_affinity(unsigned int irq, cpumask_t *dest);
  53
  54 /* soft power switch support (power.c) */
  55 extern struct tasklet_struct power_tasklet;
  56
  57 #endif  /* _ASM_PARISC_IRQ_H */