LXR linux/arch/sh/include/asm/irq.h

   1#ifndef __ASM_SH_IRQ_H
   2#define __ASM_SH_IRQ_H
   3
   4#include <linux/cpumask.h>
   5#include <asm/machvec.h>
   6
   7/*
   8 * Only legacy non-sparseirq platforms have to set a reasonably sane
   9 * value here. sparseirq platforms allocate their irq_descs on the fly,
  10 * so will expand automatically based on the number of registered IRQs.
  11 */
  12#ifdef CONFIG_SPARSE_IRQ
  13# define NR_IRQS                8
  14#else
  15# define NR_IRQS                512
  16#endif
  17
  18/*
  19 * This is a special IRQ number for indicating that no IRQ has been
  20 * triggered and to simply ignore the IRQ dispatch. This is a special
  21 * case that can happen with IRQ auto-distribution when multiple CPUs
  22 * are woken up and signalled in parallel.
  23 */
  24#define NO_IRQ_IGNORE           ((unsigned int)-1)
  25
  26/*
  27 * Simple Mask Register Support
  28 */
  29extern void make_maskreg_irq(unsigned int irq);
  30extern unsigned short *irq_mask_register;
  31
  32/*
  33 * PINT IRQs
  34 */
  35void init_IRQ_pint(void);
  36void make_imask_irq(unsigned int irq);
  37
  38static inline int generic_irq_demux(int irq)
  39{
  40        return irq;
  41}
  42
  43#define irq_demux(irq)          sh_mv.mv_irq_demux(irq)
  44
  45void init_IRQ(void);
  46void migrate_irqs(void);
  47
  48asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs);
  49
  50#ifdef CONFIG_IRQSTACKS
  51extern void irq_ctx_init(int cpu);
  52extern void irq_ctx_exit(int cpu);
  53# define __ARCH_HAS_DO_SOFTIRQ
  54#else
  55# define irq_ctx_init(cpu) do { } while (0)
  56# define irq_ctx_exit(cpu) do { } while (0)
  57#endif
  58
  59#ifdef CONFIG_INTC_BALANCING
  60extern unsigned int irq_lookup(unsigned int irq);
  61extern void irq_finish(unsigned int irq);
  62#else
  63#define irq_lookup(irq)         (irq)
  64#define irq_finish(irq)         do { } while (0)
  65#endif
  66
  67#include <asm-generic/irq.h>
  68#ifdef CONFIG_CPU_SH5
  69#include <cpu/irq.h>
  70#endif
  71
  72#endif /* __ASM_SH_IRQ_H */
  73