Merge branch 'kbuild/clean' into kbuild/kbuild
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / powerpc / platforms / pseries / event_sources.c
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
23 void 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_irq 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 printk(KERN_ERR "Unable to allocate interrupt "
46 "number for %s\n", np->full_name);
47 else
48 count++;
49
50 }
51 }
52 /* Else use normal interrupt tree parsing */
53 else {
54 /* First try to do a proper OF tree parsing */
55 for (index = 0; of_irq_map_one(np, index, &oirq) == 0;
56 index++) {
57 if (count > 15)
58 break;
59 virqs[count] = irq_create_of_mapping(oirq.controller,
60 oirq.specifier,
61 oirq.size);
62 if (virqs[count] == NO_IRQ)
63 printk(KERN_ERR "Unable to allocate interrupt "
64 "number for %s\n", np->full_name);
65 else
66 count++;
67 }
68 }
69
70 /* Now request them */
71 for (i = 0; i < count; i++) {
72 if (request_irq(virqs[i], handler, 0, name, NULL)) {
73 printk(KERN_ERR "Unable to request interrupt %d for "
74 "%s\n", virqs[i], np->full_name);
75 return;
76 }
77 }
78 }
79