irq.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:1k
- /*
- * include/asm-arm/arch-tbox/irq.h
- *
- * Copyright (C) 1998, 1999, 2000 Philip Blundell
- */
- /*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
- #include <asm/io.h>
- #define fixup_irq(x) (x)
- extern unsigned long soft_irq_mask;
- static void tbox_mask_irq(unsigned int irq)
- {
- __raw_writel(0, INTCONT + (irq << 2));
- soft_irq_mask &= ~(1<<irq);
- }
- static void tbox_unmask_irq(unsigned int irq)
- {
- soft_irq_mask |= (1<<irq);
- __raw_writel(1, INTCONT + (irq << 2));
- }
-
- static __inline__ void irq_init_irq(void)
- {
- unsigned int i;
- /* Disable all interrupts initially. */
- for (i = 0; i < NR_IRQS; i++) {
- if (i <= 10 || (i >= 12 && i <= 13)) {
- irq_desc[i].valid = 1;
- irq_desc[i].probe_ok = 0;
- irq_desc[i].mask_ack = tbox_mask_irq;
- irq_desc[i].mask = tbox_mask_irq;
- irq_desc[i].unmask = tbox_unmask_irq;
- tbox_mask_irq(i);
- } else {
- irq_desc[i].valid = 0;
- irq_desc[i].probe_ok = 0;
- }
- }
- }