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32c96f77 MN |
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 |