#ifndef __irq_h#define __irq_h/* * Please do not include this file in generic code.  There is currently * no requirement for any architecture to implement anything held * within this file. * * Thanks. --rmk */#include <linux/config.h>#if !defined(CONFIG_ARCH_S390)#include <linux/cache.h>#include <linux/spinlock.h>#include <asm/irq.h>#include <asm/ptrace.h>/* * IRQ line status. */#define IRQ_INPROGRESS	1	/* IRQ handler active - do not enter! */#define IRQ_DISABLED	2	/* IRQ disabled - do not enter! */#define IRQ_PENDING	4	/* IRQ pending - replay on enable */#define IRQ_REPLAY	8	/* IRQ has been replayed but not acked yet */#define IRQ_AUTODETECT	16	/* IRQ is being autodetected */#define IRQ_WAITING	32	/* IRQ not yet seen - for autodetection */#define IRQ_LEVEL	64	/* IRQ level triggered */#define IRQ_MASKED	128	/* IRQ masked - shouldn't be seen again */#define IRQ_PER_CPU	256	/* IRQ is per CPU *//* * Interrupt controller descriptor. This is all we need * to describe about the low-level hardware.  */struct hw_interrupt_type {	const char * typename;	unsigned int (*startup)(unsigned int irq);	void (*shutdown)(unsigned int irq);	void (*enable)(unsigned int irq);	void (*disable)(unsigned int irq);	void (*ack)(unsigned int irq);	void (*end)(unsigned int irq);	void (*set_affinity)(unsigned int irq, unsigned long mask);};typedef struct hw_interrupt_type  hw_irq_controller;/* * This is the "IRQ descriptor", which contains various information * about the irq, including what kind of hardware handling it has, * whether it is disabled etc etc. * * Pad this out to 32 bytes for cache and indexing reasons. */typedef struct {	unsigned int status;		/* IRQ status */	hw_irq_controller *handler;	struct irqaction *action;	/* IRQ action list */	unsigned int depth;		/* nested irq disables */	spinlock_t lock;} ____cacheline_aligned irq_desc_t;extern irq_desc_t irq_desc [NR_IRQS];#include <asm/hw_irq.h> /* the arch dependent stuff */extern int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);extern int setup_irq(unsigned int , struct irqaction * );extern hw_irq_controller no_irq_type;  /* needed in every arch ? */extern void no_action(int cpl, void *dev_id, struct pt_regs *regs);#endif#endif /* __asm_h */