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.  */
15void pic_info(Monitor *mon)
16{
17}
18
19void irq_info(Monitor *mon)
20{
21}
22
23
24/* Input 0 is IRQ and input 1 is FIQ.  */
25static 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
47qemu_irq *arm_pic_init_cpu(CPUOldState *env)
48{
49    return qemu_allocate_irqs(arm_pic_cpu_handler, env, 2);
50}
51