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/config.h>
  11 #include <linux/cpumask.h>
  12 #include <asm/types.h>
  13
  14 #define NO_IRQ          (-1)
  15
  16 #ifdef CONFIG_GSC
  17 #define GSC_IRQ_BASE    16
  18 #define GSC_IRQ_MAX     63
  19 #define CPU_IRQ_BASE    64
  20 #else
  21 #define CPU_IRQ_BASE    16
  22 #endif
  23
  24 #define TIMER_IRQ       (CPU_IRQ_BASE + 0)
  25 #define IPI_IRQ         (CPU_IRQ_BASE + 1)
  26 #define CPU_IRQ_MAX     (CPU_IRQ_BASE + (BITS_PER_LONG - 1))
  27
  28 #define NR_IRQS         (CPU_IRQ_MAX + 1)
  29
  30 /*
  31  * IRQ line status macro IRQ_PER_CPU is used
  32  */
  33 #define ARCH_HAS_IRQ_PER_CPU
  34
  35 static __inline__ int irq_canonicalize(int irq)
  36 {
  37         return (irq == 2) ? 9 : irq;
  38 }
  39
  40 struct hw_interrupt_type;
  41
  42 /*
  43  * Some useful "we don't have to do anything here" handlers.  Should
  44  * probably be provided by the generic code.
  45  */
  46 void no_ack_irq(unsigned int irq);
  47 void no_end_irq(unsigned int irq);
  48
  49 extern int txn_alloc_irq(unsigned int nbits);
  50 extern int txn_claim_irq(int);
  51 extern unsigned int txn_alloc_data(unsigned int);
  52 extern unsigned long txn_alloc_addr(unsigned int);
  53 extern unsigned long txn_affinity_addr(unsigned int irq, int cpu);
  54
  55 extern int cpu_claim_irq(unsigned int irq, struct hw_interrupt_type *, void *);
  56 extern int cpu_check_affinity(unsigned int irq, cpumask_t *dest);
  57
  58 /* soft power switch support (power.c) */
  59 extern struct tasklet_struct power_tasklet;
  60
  61 #endif  /* _ASM_PARISC_IRQ_H */