arch/sh/include/asm/irq.h

Source file repositories/reference/linux-study-clean/arch/sh/include/asm/irq.h

File Facts

System
Linux kernel
Corpus path
arch/sh/include/asm/irq.h
Extension
.h
Size
1185 bytes
Lines
52
Domain
Architecture Layer
Bucket
arch/sh
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __ASM_SH_IRQ_H
#define __ASM_SH_IRQ_H

#include <linux/cpumask.h>
#include <asm/machvec.h>

/*
 * This is a special IRQ number for indicating that no IRQ has been
 * triggered and to simply ignore the IRQ dispatch. This is a special
 * case that can happen with IRQ auto-distribution when multiple CPUs
 * are woken up and signalled in parallel.
 */
#define NO_IRQ_IGNORE		((unsigned int)-1)

/*
 * PINT IRQs
 */
void make_imask_irq(unsigned int irq);

static inline int generic_irq_demux(int irq)
{
	return irq;
}

#define irq_demux(irq)		sh_mv.mv_irq_demux(irq)

void init_IRQ(void);
void migrate_irqs(void);

asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs);

#ifdef CONFIG_IRQSTACKS
extern void irq_ctx_init(int cpu);
extern void irq_ctx_exit(int cpu);
#else
# define irq_ctx_init(cpu) do { } while (0)
# define irq_ctx_exit(cpu) do { } while (0)
#endif

#ifdef CONFIG_INTC_BALANCING
extern unsigned int irq_lookup(unsigned int irq);
extern void irq_finish(unsigned int irq);
#else
#define irq_lookup(irq)		(irq)
#define irq_finish(irq)		do { } while (0)
#endif

#include <asm-generic/irq.h>

#endif /* __ASM_SH_IRQ_H */

Annotation

Implementation Notes