87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
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/*
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* Copyright (C) 2001 Dave Engebretsen IBM Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <asm/prom.h>
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#include "pseries.h"
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void request_event_sources_irqs(struct device_node *np,
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irq_handler_t handler,
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const char *name)
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{
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int i, index, count = 0;
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struct of_irq oirq;
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const u32 *opicprop;
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unsigned int opicplen;
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unsigned int virqs[16];
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/* Check for obsolete "open-pic-interrupt" property. If present, then
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* map those interrupts using the default interrupt host and default
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* trigger
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*/
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opicprop = of_get_property(np, "open-pic-interrupt", &opicplen);
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if (opicprop) {
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opicplen /= sizeof(u32);
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for (i = 0; i < opicplen; i++) {
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if (count > 15)
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break;
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virqs[count] = irq_create_mapping(NULL, *(opicprop++));
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if (virqs[count] == NO_IRQ) {
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pr_err("event-sources: Unable to allocate "
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"interrupt number for %s\n",
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np->full_name);
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WARN_ON(1);
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}
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else
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count++;
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}
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}
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/* Else use normal interrupt tree parsing */
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else {
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/* First try to do a proper OF tree parsing */
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for (index = 0; of_irq_map_one(np, index, &oirq) == 0;
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index++) {
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if (count > 15)
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break;
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virqs[count] = irq_create_of_mapping(oirq.controller,
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oirq.specifier,
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oirq.size);
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if (virqs[count] == NO_IRQ) {
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pr_err("event-sources: Unable to allocate "
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"interrupt number for %s\n",
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np->full_name);
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WARN_ON(1);
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}
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else
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count++;
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}
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}
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/* Now request them */
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for (i = 0; i < count; i++) {
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if (request_irq(virqs[i], handler, 0, name, NULL)) {
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pr_err("event-sources: Unable to request interrupt "
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"%d for %s\n", virqs[i], np->full_name);
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WARN_ON(1);
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return;
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}
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}
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}
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