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      1 /*
      2  * Generic ARM Programmable Interrupt Controller support.
      3  *
      4  * Copyright (c) 2006 CodeSourcery.
      5  * Written by Paul Brook
      6  *
      7  * This code is licenced under the LGPL
      8  */
      9 
     10 #include "hw/hw.h"
     11 #include "hw/i386/pc.h"
     12 #include "hw/arm/arm.h"
     13 
     14 /* Stub functions for hardware that doesn't exist.  */
     15 void pic_info(Monitor *mon)
     16 {
     17 }
     18 
     19 void irq_info(Monitor *mon)
     20 {
     21 }
     22 
     23 
     24 /* Input 0 is IRQ and input 1 is FIQ.  */
     25 static void arm_pic_cpu_handler(void *opaque, int irq, int level)
     26 {
     27     CPUOldState *env = (CPUOldState *)opaque;
     28     CPUState *cpu = ENV_GET_CPU(env);
     29     switch (irq) {
     30     case ARM_PIC_CPU_IRQ:
     31         if (level)
     32             cpu_interrupt(cpu, CPU_INTERRUPT_HARD);
     33         else
     34             cpu_reset_interrupt(cpu, CPU_INTERRUPT_HARD);
     35         break;
     36     case ARM_PIC_CPU_FIQ:
     37         if (level)
     38             cpu_interrupt(cpu, CPU_INTERRUPT_FIQ);
     39         else
     40             cpu_reset_interrupt(cpu, CPU_INTERRUPT_FIQ);
     41         break;
     42     default:
     43         hw_error("arm_pic_cpu_handler: Bad interrput line %d\n", irq);
     44     }
     45 }
     46 
     47 qemu_irq *arm_pic_init_cpu(CPUOldState *env)
     48 {
     49     return qemu_allocate_irqs(arm_pic_cpu_handler, env, 2);
     50 }
     51