[linux.git] / arch / ia64 / kernel / irq_lsapic.c

// SPDX-License-Identifier: GPL-2.0
/*
 * 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 <[email protected]>
 * Copyright (C) 2000 Hewlett-Packard Co
 * Copyright (C) 2000 David Mosberger-Tang <[email protected]>
 */

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

static unsigned int
lsapic_noop_startup (struct irq_data *data)
{
	return 0;
}

static void
lsapic_noop (struct irq_data *data)
{
	/* nothing to do... */
}

static int lsapic_retrigger(struct irq_data *data)
{
	ia64_resend_irq(data->irq);

	return 1;
}

struct irq_chip irq_type_ia64_lsapic = {
	.name =			"LSAPIC",
	.irq_startup =		lsapic_noop_startup,
	.irq_shutdown =		lsapic_noop,
	.irq_enable =		lsapic_noop,
	.irq_disable =		lsapic_noop,
	.irq_ack =		lsapic_noop,
	.irq_retrigger =	lsapic_retrigger,
};
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* LSAPIC Interrupt Controller
	4	*
	5	* This takes care of interrupts that are generated by the CPU's
	6	* internal Streamlined Advanced Programmable Interrupt Controller
	7	* (LSAPIC), such as the ITC and IPI interrupts.
	8	*
	9	* Copyright (C) 1999 VA Linux Systems
	10	* Copyright (C) 1999 Walt Drummond <[email protected]>
	11	* Copyright (C) 2000 Hewlett-Packard Co
	12	* Copyright (C) 2000 David Mosberger-Tang <[email protected]>
	13	*/
	14
	15	#include <linux/sched.h>
	16	#include <linux/irq.h>
	17
	18	static unsigned int
5c217b60	19	lsapic_noop_startup (struct irq_data *data)
1da177e4 LT	20	{
	21	return 0;
	22	}
	23
	24	static void
5c217b60	25	lsapic_noop (struct irq_data *data)
1da177e4	26	{
72fdbdce	27	/* nothing to do... */
1da177e4 LT	28	}
1da177e4 LT	29
5c217b60	30	static int lsapic_retrigger(struct irq_data *data)
c0ad90a3	31	{
5c217b60	32	ia64_resend_irq(data->irq);
c0ad90a3 IM	33
	34	return 1;
	35	}
	36
fb824f48	37	struct irq_chip irq_type_ia64_lsapic = {
5c217b60 TG	38	.name = "LSAPIC",
	39	.irq_startup = lsapic_noop_startup,
	40	.irq_shutdown = lsapic_noop,
	41	.irq_enable = lsapic_noop,
	42	.irq_disable = lsapic_noop,
	43	.irq_ack = lsapic_noop,
	44	.irq_retrigger = lsapic_retrigger,
1da177e4	45	};