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     ARMCPU *cpu = opaque;
  17     CPUARMState *env = &cpu->env;
  18
  19     switch (irq) {
  20     case ARM_PIC_CPU_IRQ:
  21         if (level)
  22             cpu_interrupt(env, CPU_INTERRUPT_HARD);
  23         else
  24             cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
  25         break;
  26     case ARM_PIC_CPU_FIQ:
  27         if (level)
  28             cpu_interrupt(env, CPU_INTERRUPT_FIQ);
  29         else
  30             cpu_reset_interrupt(env, CPU_INTERRUPT_FIQ);
  31         break;
  32     default:
  33         hw_error("arm_pic_cpu_handler: Bad interrupt line %d\n", irq);
  34     }
  35 }
  36
  37 qemu_irq *arm_pic_init_cpu(ARMCPU *cpu)
  38 {
  39     return qemu_allocate_irqs(arm_pic_cpu_handler, cpu, 2);
  40 }