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45 lines
973 B
45 lines
973 B
/*
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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 (unsigned int irq)
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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 (unsigned int irq)
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{
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/* nuthing to do... */
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}
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static int lsapic_retrigger(unsigned int irq)
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{
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ia64_resend_irq(irq);
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return 1;
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}
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struct hw_interrupt_type irq_type_ia64_lsapic = {
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.typename = "LSAPIC",
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.startup = lsapic_noop_startup,
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.shutdown = lsapic_noop,
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.enable = lsapic_noop,
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.disable = lsapic_noop,
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.ack = lsapic_noop,
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.end = lsapic_noop,
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.retrigger = lsapic_retrigger,
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};
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