arch/sh/include/asm/irq.h

   1 #ifndef __ASM_SH_IRQ_H
   2 #define __ASM_SH_IRQ_H
   3
   4 #include <asm/machvec.h>
   5
   6 /*
   7  * A sane default based on a reasonable vector table size, platforms are
   8  * advised to cap this at the hard limit that they're interested in
   9  * through the machvec.
  10  */
  11 #define NR_IRQS                 256
  12 #define NR_IRQS_LEGACY          8       /* Legacy external IRQ0-7 */
  13
  14 /*
  15  * This is a special IRQ number for indicating that no IRQ has been
  16  * triggered and to simply ignore the IRQ dispatch. This is a special
  17  * case that can happen with IRQ auto-distribution when multiple CPUs
  18  * are woken up and signalled in parallel.
  19  */
  20 #define NO_IRQ_IGNORE           ((unsigned int)-1)
  21
  22 /*
  23  * Convert back and forth between INTEVT and IRQ values.
  24  */
  25 #ifdef CONFIG_CPU_HAS_INTEVT
  26 #define evt2irq(evt)            (((evt) >> 5) - 16)
  27 #define irq2evt(irq)            (((irq) + 16) << 5)
  28 #else
  29 #define evt2irq(evt)            (evt)
  30 #define irq2evt(irq)            (irq)
  31 #endif
  32
  33 /*
  34  * Simple Mask Register Support
  35  */
  36 extern void make_maskreg_irq(unsigned int irq);
  37 extern unsigned short *irq_mask_register;
  38
  39 /*
  40  * PINT IRQs
  41  */
  42 void init_IRQ_pint(void);
  43 void make_imask_irq(unsigned int irq);
  44
  45 static inline int generic_irq_demux(int irq)
  46 {
  47         return irq;
  48 }
  49
  50 #define irq_demux(irq)          sh_mv.mv_irq_demux(irq)
  51
  52 void init_IRQ(void);
  53 asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs);
  54
  55 #ifdef CONFIG_IRQSTACKS
  56 extern void irq_ctx_init(int cpu);
  57 extern void irq_ctx_exit(int cpu);
  58 # define __ARCH_HAS_DO_SOFTIRQ
  59 #else
  60 # define irq_ctx_init(cpu) do { } while (0)
  61 # define irq_ctx_exit(cpu) do { } while (0)
  62 #endif
  63
  64 #ifdef CONFIG_INTC_BALANCING
  65 extern unsigned int irq_lookup(unsigned int irq);
  66 extern void irq_finish(unsigned int irq);
  67 #else
  68 #define irq_lookup(irq)         (irq)
  69 #define irq_finish(irq)         do { } while (0)
  70 #endif
  71
  72 #include <asm-generic/irq.h>
  73 #ifdef CONFIG_CPU_SH5
  74 #include <cpu/irq.h>
  75 #endif
  76
  77 #endif /* __ASM_SH_IRQ_H */