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  */
  29 extern void make_maskreg_irq(unsigned int irq);
  30 extern unsigned short *irq_mask_register;
  31
  32 /*
  33  * PINT IRQs
  34  */
  35 void init_IRQ_pint(void);
  36 void make_imask_irq(unsigned int irq);
  37
  38 static 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
  45 void init_IRQ(void);
  46 void migrate_irqs(void);
  47
  48 asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs);
  49
  50 #ifdef CONFIG_IRQSTACKS
  51 extern void irq_ctx_init(int cpu);
  52 extern 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
  60 extern unsigned int irq_lookup(unsigned int irq);
  61 extern 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 */