arch/sh/include/asm/irq.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ASM_SH_IRQ_H
   3 #define __ASM_SH_IRQ_H
   4
   5 #include <linux/cpumask.h>
   6 #include <asm/machvec.h>
   7
   8 /*
   9  * Only legacy non-sparseirq platforms have to set a reasonably sane
  10  * value here. sparseirq platforms allocate their irq_descs on the fly,
  11  * so will expand automatically based on the number of registered IRQs.
  12  */
  13 #ifdef CONFIG_SPARSE_IRQ
  14 # define NR_IRQS                8
  15 #else
  16 # define NR_IRQS                512
  17 #endif
  18
  19 /*
  20  * This is a special IRQ number for indicating that no IRQ has been
  21  * triggered and to simply ignore the IRQ dispatch. This is a special
  22  * case that can happen with IRQ auto-distribution when multiple CPUs
  23  * are woken up and signalled in parallel.
  24  */
  25 #define NO_IRQ_IGNORE           ((unsigned int)-1)
  26
  27 /*
  28  * Simple Mask Register Support
  29  */
  30 extern void make_maskreg_irq(unsigned int irq);
  31 extern unsigned short *irq_mask_register;
  32
  33 /*
  34  * PINT IRQs
  35  */
  36 void init_IRQ_pint(void);
  37 void make_imask_irq(unsigned int irq);
  38
  39 static inline int generic_irq_demux(int irq)
  40 {
  41         return irq;
  42 }
  43
  44 #define irq_demux(irq)          sh_mv.mv_irq_demux(irq)
  45
  46 void init_IRQ(void);
  47 void migrate_irqs(void);
  48
  49 asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs);
  50
  51 #ifdef CONFIG_IRQSTACKS
  52 extern void irq_ctx_init(int cpu);
  53 extern void irq_ctx_exit(int cpu);
  54 # define __ARCH_HAS_DO_SOFTIRQ
  55 #else
  56 # define irq_ctx_init(cpu) do { } while (0)
  57 # define irq_ctx_exit(cpu) do { } while (0)
  58 #endif
  59
  60 #ifdef CONFIG_INTC_BALANCING
  61 extern unsigned int irq_lookup(unsigned int irq);
  62 extern void irq_finish(unsigned int irq);
  63 #else
  64 #define irq_lookup(irq)         (irq)
  65 #define irq_finish(irq)         do { } while (0)
  66 #endif
  67
  68 #include <asm-generic/irq.h>
  69 #ifdef CONFIG_CPU_SH5
  70 #include <cpu/irq.h>
  71 #endif
  72
  73 #endif /* __ASM_SH_IRQ_H */