arch/powerpc/include/asm/irq.h

   1 #ifdef __KERNEL__
   2 #ifndef _ASM_POWERPC_IRQ_H
   3 #define _ASM_POWERPC_IRQ_H
   4
   5 /*
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #include <linux/irqdomain.h>
  13 #include <linux/threads.h>
  14 #include <linux/list.h>
  15 #include <linux/radix-tree.h>
  16
  17 #include <asm/types.h>
  18 #include <linux/atomic.h>
  19
  20
  21 extern atomic_t ppc_n_lost_interrupts;
  22
  23 /* This number is used when no interrupt has been assigned */
  24 #define NO_IRQ                  (0)
  25
  26 /* Total number of virq in the platform */
  27 #define NR_IRQS         CONFIG_NR_IRQS
  28
  29 /* Same thing, used by the generic IRQ code */
  30 #define NR_IRQS_LEGACY          NUM_ISA_INTERRUPTS
  31
  32 extern irq_hw_number_t virq_to_hw(unsigned int virq);
  33
  34 static __inline__ int irq_canonicalize(int irq)
  35 {
  36         return irq;
  37 }
  38
  39 extern int distribute_irqs;
  40
  41 struct irqaction;
  42 struct pt_regs;
  43
  44 #define __ARCH_HAS_DO_SOFTIRQ
  45
  46 #if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
  47 /*
  48  * Per-cpu stacks for handling critical, debug and machine check
  49  * level interrupts.
  50  */
  51 extern struct thread_info *critirq_ctx[NR_CPUS];
  52 extern struct thread_info *dbgirq_ctx[NR_CPUS];
  53 extern struct thread_info *mcheckirq_ctx[NR_CPUS];
  54 extern void exc_lvl_ctx_init(void);
  55 #else
  56 #define exc_lvl_ctx_init()
  57 #endif
  58
  59 /*
  60  * Per-cpu stacks for handling hard and soft interrupts.
  61  */
  62 extern struct thread_info *hardirq_ctx[NR_CPUS];
  63 extern struct thread_info *softirq_ctx[NR_CPUS];
  64
  65 extern void irq_ctx_init(void);
  66 extern void call_do_softirq(struct thread_info *tp);
  67 extern void call_do_irq(struct pt_regs *regs, struct thread_info *tp);
  68 extern void do_IRQ(struct pt_regs *regs);
  69 extern void __do_irq(struct pt_regs *regs);
  70
  71 int irq_choose_cpu(const struct cpumask *mask);
  72
  73 #endif /* _ASM_IRQ_H */
  74 #endif /* __KERNEL__ */