46 lines
1 KiB
C
46 lines
1 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* LSAPIC Interrupt Controller
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*
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* This takes care of interrupts that are generated by the CPU's
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* internal Streamlined Advanced Programmable Interrupt Controller
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* (LSAPIC), such as the ITC and IPI interrupts.
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*
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* Copyright (C) 1999 VA Linux Systems
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* Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
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* Copyright (C) 2000 Hewlett-Packard Co
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* Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
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*/
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#include <linux/sched.h>
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#include <linux/irq.h>
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static unsigned int
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lsapic_noop_startup (struct irq_data *data)
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{
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return 0;
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}
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static void
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lsapic_noop (struct irq_data *data)
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{
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/* nothing to do... */
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}
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static int lsapic_retrigger(struct irq_data *data)
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{
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ia64_resend_irq(data->irq);
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return 1;
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}
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struct irq_chip irq_type_ia64_lsapic = {
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.name = "LSAPIC",
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.irq_startup = lsapic_noop_startup,
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.irq_shutdown = lsapic_noop,
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.irq_enable = lsapic_noop,
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.irq_disable = lsapic_noop,
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.irq_ack = lsapic_noop,
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.irq_retrigger = lsapic_retrigger,
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};
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