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// 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 <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 (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,
};
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