[mirror_ubuntu-bionic-kernel.git] / arch / ia64 / kernel / irq_lsapic.c

/*
 * 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 <drummond@valinux.com>
 * Copyright (C) 2000 Hewlett-Packard Co
 * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
 */

#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)
{
	/* nothing to do... */
}

static int lsapic_retrigger(unsigned int irq)
{
	ia64_resend_irq(irq);

	return 1;
}

struct irq_chip irq_type_ia64_lsapic = {
	.name =		"LSAPIC",
	.startup =	lsapic_noop_startup,
	.shutdown =	lsapic_noop,
	.enable =	lsapic_noop,
	.disable =	lsapic_noop,
	.ack =		lsapic_noop,
	.end =		lsapic_noop,
	.retrigger =	lsapic_retrigger,
};
Commit	Line	Data
1da177e4 LT	1	/*
	2	* LSAPIC Interrupt Controller
	3	*
	4	* This takes care of interrupts that are generated by the CPU's
	5	* internal Streamlined Advanced Programmable Interrupt Controller
	6	* (LSAPIC), such as the ITC and IPI interrupts.
	7	*
	8	* Copyright (C) 1999 VA Linux Systems
	9	* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
	10	* Copyright (C) 2000 Hewlett-Packard Co
	11	* Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
	12	*/
	13
	14	#include <linux/sched.h>
	15	#include <linux/irq.h>
	16
	17	static unsigned int
	18	lsapic_noop_startup (unsigned int irq)
	19	{
	20	return 0;
	21	}
	22
	23	static void
	24	lsapic_noop (unsigned int irq)
	25	{
72fdbdce	26	/* nothing to do... */
1da177e4 LT	27	}
1da177e4 LT	28
c0ad90a3 IM	29	static int lsapic_retrigger(unsigned int irq)
	30	{
	31	ia64_resend_irq(irq);
	32
	33	return 1;
	34	}
	35
fb824f48	36	struct irq_chip irq_type_ia64_lsapic = {
06344db3	37	.name = "LSAPIC",
1da177e4 LT	38	.startup = lsapic_noop_startup,
	39	.shutdown = lsapic_noop,
	40	.enable = lsapic_noop,
	41	.disable = lsapic_noop,
	42	.ack = lsapic_noop,
c0ad90a3 IM	43	.end = lsapic_noop,
c0ad90a3 IM	44	.retrigger = lsapic_retrigger,
1da177e4	45	};