hw/arm_pic.c

   1 /*
   2  * Generic ARM Programmable Interrupt Controller support.
   3  *
   4  * Copyright (c) 2006 CodeSourcery.
   5  * Written by Paul Brook
   6  *
   7  * This code is licensed under the LGPL
   8  */
   9
  10 #include "hw.h"
  11 #include "arm-misc.h"
  12
  13 /* Input 0 is IRQ and input 1 is FIQ.  */
  14 static void arm_pic_cpu_handler(void *opaque, int irq, int level)
  15 {
  16     CPUARMState *env = (CPUARMState *)opaque;
  17     switch (irq) {
  18     case ARM_PIC_CPU_IRQ:
  19         if (level)
  20             cpu_interrupt(env, CPU_INTERRUPT_HARD);
  21         else
  22             cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
  23         break;
  24     case ARM_PIC_CPU_FIQ:
  25         if (level)
  26             cpu_interrupt(env, CPU_INTERRUPT_FIQ);
  27         else
  28             cpu_reset_interrupt(env, CPU_INTERRUPT_FIQ);
  29         break;
  30     default:
  31         hw_error("arm_pic_cpu_handler: Bad interrupt line %d\n", irq);
  32     }
  33 }
  34
  35 qemu_irq *arm_pic_init_cpu(CPUARMState *env)
  36 {
  37     return qemu_allocate_irqs(arm_pic_cpu_handler, env, 2);
  38 }