1/*
2 * Copyright (C) 2001 Dave Engebretsen IBM Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
17 */
18
19#include <asm/prom.h>
20
21#include "pseries.h"
22
23void request_event_sources_irqs(struct device_node *np,
24				irq_handler_t handler,
25				const char *name)
26{
27	int i, index, count = 0;
28	struct of_phandle_args oirq;
29	const u32 *opicprop;
30	unsigned int opicplen;
31	unsigned int virqs[16];
32
33	/* Check for obsolete "open-pic-interrupt" property. If present, then
34	 * map those interrupts using the default interrupt host and default
35	 * trigger
36	 */
37	opicprop = of_get_property(np, "open-pic-interrupt", &opicplen);
38	if (opicprop) {
39		opicplen /= sizeof(u32);
40		for (i = 0; i < opicplen; i++) {
41			if (count > 15)
42				break;
43			virqs[count] = irq_create_mapping(NULL, *(opicprop++));
44			if (virqs[count] == NO_IRQ) {
45				pr_err("event-sources: Unable to allocate "
46				       "interrupt number for %s\n",
47				       np->full_name);
48				WARN_ON(1);
49			}
50			else
51				count++;
52
53		}
54	}
55	/* Else use normal interrupt tree parsing */
56	else {
57		/* First try to do a proper OF tree parsing */
58		for (index = 0; of_irq_parse_one(np, index, &oirq) == 0;
59		     index++) {
60			if (count > 15)
61				break;
62			virqs[count] = irq_create_of_mapping(&oirq);
63			if (virqs[count] == NO_IRQ) {
64				pr_err("event-sources: Unable to allocate "
65				       "interrupt number for %s\n",
66				       np->full_name);
67				WARN_ON(1);
68			}
69			else
70				count++;
71		}
72	}
73
74	/* Now request them */
75	for (i = 0; i < count; i++) {
76		if (request_irq(virqs[i], handler, 0, name, NULL)) {
77			pr_err("event-sources: Unable to request interrupt "
78			       "%d for %s\n", virqs[i], np->full_name);
79			WARN_ON(1);
80			return;
81		}
82	}
83}
84
85