arch/arm/include/asm/irq.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_ARM_IRQ_H
   3 #define __ASM_ARM_IRQ_H
   4
   5 #define NR_IRQS_LEGACY  16
   6
   7 #ifndef CONFIG_SPARSE_IRQ
   8 #include <mach/irqs.h>
   9 #else
  10 #define NR_IRQS NR_IRQS_LEGACY
  11 #endif
  12
  13 #ifndef irq_canonicalize
  14 #define irq_canonicalize(i)     (i)
  15 #endif
  16
  17 /*
  18  * Use this value to indicate lack of interrupt
  19  * capability
  20  */
  21 #ifndef NO_IRQ
  22 #define NO_IRQ  ((unsigned int)(-1))
  23 #endif
  24
  25 #ifndef __ASSEMBLY__
  26 struct irqaction;
  27 struct pt_regs;
  28 extern void migrate_irqs(void);
  29
  30 extern void asm_do_IRQ(unsigned int, struct pt_regs *);
  31 void handle_IRQ(unsigned int, struct pt_regs *);
  32 void init_IRQ(void);
  33
  34 #ifdef CONFIG_MULTI_IRQ_HANDLER
  35 extern void (*handle_arch_irq)(struct pt_regs *);
  36 extern void set_handle_irq(void (*handle_irq)(struct pt_regs *));
  37 #endif
  38
  39 #ifdef CONFIG_SMP
  40 extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
  41                                            bool exclude_self);
  42 #define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
  43 #endif
  44
  45 static inline int nr_legacy_irqs(void)
  46 {
  47         return NR_IRQS_LEGACY;
  48 }
  49
  50 #endif
  51
  52 #endif
  53