irq_lsapic.c

ARM 嵌入式 系统 设计与实例开发 实验教材 二源码

/*
 * LSAPIC Interrupt Controller
 *
 * This takes care of interrupts that are generated by the CPU's
 * internal Streamlined Advanced Programmable Interrupt Controller
 * (LSAPIC), such as the ITC and IPI interrupts.
    *
 * Copyright (C) 1999 VA Linux Systems
 * Copyright (C) 1999 Walt Drummond <[e-mail]>
 * Copyright (C) 2000 Hewlett-Packard Co
 * Copyright (C) 2000 David Mosberger-Tang <[e-mail]>
 */

#include <linux/sched.h>
#include <linux/irq.h>

static unsigned int
lsapic_noop_startup (unsigned int irq)
{
	return 0;
}

static void
lsapic_noop (unsigned int irq)
{
	/* nuthing to do... */
}

struct hw_interrupt_type irq_type_ia64_lsapic = {
	typename:	"LSAPIC",
	startup:	lsapic_noop_startup,
	shutdown:	lsapic_noop,
	enable:		lsapic_noop,
	disable:	lsapic_noop,
	ack:		lsapic_noop,
	end:		lsapic_noop,
	set_affinity:	(void (*)(unsigned int, unsigned long)) lsapic_noop
};