include/asm-arm/arch-tbox/irq.h

   1 /*
   2  * include/asm-arm/arch-tbox/irq.h
   3  *
   4  * Copyright (C) 1998, 1999, 2000 Philip Blundell
   5  */
   6
   7 /*
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version
  11  * 2 of the License, or (at your option) any later version.
  12  */
  13
  14 #include <asm/io.h>
  15
  16 #define fixup_irq(x) (x)
  17
  18 extern unsigned long soft_irq_mask;
  19
  20 static void tbox_mask_irq(unsigned int irq)
  21 {
  22         __raw_writel(0, INTCONT + (irq << 2));
  23         soft_irq_mask &= ~(1<<irq);
  24 }
  25
  26 static void tbox_unmask_irq(unsigned int irq)
  27 {
  28         soft_irq_mask |= (1<<irq);
  29         __raw_writel(1, INTCONT + (irq << 2));
  30 }
  31
  32 static __inline__ void irq_init_irq(void)
  33 {
  34         unsigned int i;
  35
  36         /* Disable all interrupts initially. */
  37         for (i = 0; i < NR_IRQS; i++) {
  38                 if (i <= 10 || (i >= 12 && i <= 13)) {
  39                         irq_desc[i].valid       = 1;
  40                         irq_desc[i].probe_ok    = 0;
  41                         irq_desc[i].mask_ack    = tbox_mask_irq;
  42                         irq_desc[i].mask        = tbox_mask_irq;
  43                         irq_desc[i].unmask      = tbox_unmask_irq;
  44                         tbox_mask_irq(i);
  45                 } else {
  46                         irq_desc[i].valid       = 0;
  47                         irq_desc[i].probe_ok    = 0;
  48                 }
  49         }
  50 }