| Mark Nelson | 32c96f7 | 2010-05-18 22:51:00 +0000 | [diff] [blame] | 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 | |