irq.h

xen 3.2.2 源码

#ifndef _ASM_IA64_IRQ_H
#define _ASM_IA64_IRQ_H

/*
 * Copyright (C) 1999-2000, 2002 Hewlett-Packard Co
 *	David Mosberger-Tang <[e-mail]>
 *	Stephane Eranian <[e-mail]>
 *
 * 11/24/98	S.Eranian 	updated TIMER_IRQ and irq_canonicalize
 * 01/20/99	S.Eranian	added keyboard interrupt
 * 02/29/00     D.Mosberger	moved most things into hw_irq.h
 */

#define NR_IRQS		256
#define NR_IRQ_VECTORS	NR_IRQS

static __inline__ int
irq_canonicalize (int irq)
{
	/*
	 * We do the legacy thing here of pretending that irqs < 16
	 * are 8259 irqs.  This really shouldn't be necessary at all,
	 * but we keep it here as serial.c still uses it...
	 */
	return ((irq == 2) ? 9 : irq);
}

extern void disable_irq (unsigned int);
extern void disable_irq_nosync (unsigned int);
extern void enable_irq (unsigned int);
extern void set_irq_affinity_info (unsigned int irq, int dest, int redir);

#ifdef CONFIG_SMP
extern void move_irq(int irq);
#else
#define move_irq(irq)
#endif

struct irqaction;
struct pt_regs;
int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);

extern fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs);

#endif /* _ASM_IA64_IRQ_H */