arch/powerpc/include/asm/irq.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 #ifdef __KERNEL__
   3 #ifndef _ASM_POWERPC_IRQ_H
   4 #define _ASM_POWERPC_IRQ_H
   5
   6 /*
   7  */
   8
   9 #include <linux/irqdomain.h>
  10 #include <linux/threads.h>
  11 #include <linux/list.h>
  12 #include <linux/radix-tree.h>
  13
  14 #include <asm/types.h>
  15 #include <linux/atomic.h>
  16
  17
  18 extern atomic_t ppc_n_lost_interrupts;
  19
  20 /* This number is used when no interrupt has been assigned */
  21 #define NO_IRQ                  (0)
  22
  23 /* Total number of virq in the platform */
  24 #define NR_IRQS         CONFIG_NR_IRQS
  25
  26 /* Same thing, used by the generic IRQ code */
  27 #define NR_IRQS_LEGACY          NUM_ISA_INTERRUPTS
  28
  29 extern irq_hw_number_t virq_to_hw(unsigned int virq);
  30
  31 static __inline__ int irq_canonicalize(int irq)
  32 {
  33         return irq;
  34 }
  35
  36 extern int distribute_irqs;
  37
  38 struct pt_regs;
  39
  40 #define __ARCH_HAS_DO_SOFTIRQ
  41
  42 #if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
  43 /*
  44  * Per-cpu stacks for handling critical, debug and machine check
  45  * level interrupts.
  46  */
  47 extern void *critirq_ctx[NR_CPUS];
  48 extern void *dbgirq_ctx[NR_CPUS];
  49 extern void *mcheckirq_ctx[NR_CPUS];
  50 #endif
  51
  52 /*
  53  * Per-cpu stacks for handling hard and soft interrupts.
  54  */
  55 extern void *hardirq_ctx[NR_CPUS];
  56 extern void *softirq_ctx[NR_CPUS];
  57
  58 void call_do_softirq(void *sp);
  59 void call_do_irq(struct pt_regs *regs, void *sp);
  60 extern void do_IRQ(struct pt_regs *regs);
  61 extern void __init init_IRQ(void);
  62 extern void __do_irq(struct pt_regs *regs);
  63
  64 int irq_choose_cpu(const struct cpumask *mask);
  65
  66 #endif /* _ASM_IRQ_H */
  67 #endif /* __KERNEL__ */