2 * Copyright (c) 2013 Neel Natu <neel@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
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16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
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19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * Used to keep track of legacy interrupt owners/requestors
37 static struct lirqinfo {
47 * Allow ISA IRQs 5,10,11,12, and 15 to be available for generic use.
49 lirq[5].li_generic = true;
50 lirq[10].li_generic = true;
51 lirq[11].li_generic = true;
52 lirq[12].li_generic = true;
53 lirq[15].li_generic = true;
57 legacy_irq_alloc(int irq)
64 for (i = 0; i < NLIRQ; i++) {
65 if (lirq[i].li_generic && !lirq[i].li_allocated) {
71 if (lirq[irq].li_allocated)
76 lirq[irq].li_allocated = true;