File:  [Qemu by Fabrice Bellard] / qemu / hw / arm_pic.c
Revision 1.1.1.6 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 19:49:50 2018 UTC (2 years, 2 months ago) by root
Branches: qemu, MAIN
CVS tags: qemu1101, HEAD
qemu 1.1.1

/*
 * Generic ARM Programmable Interrupt Controller support.
 *
 * Copyright (c) 2006 CodeSourcery.
 * Written by Paul Brook
 *
 * This code is licensed under the LGPL
 */

#include "hw.h"
#include "arm-misc.h"

/* Input 0 is IRQ and input 1 is FIQ.  */
static void arm_pic_cpu_handler(void *opaque, int irq, int level)
{
    CPUARMState *env = (CPUARMState *)opaque;
    switch (irq) {
    case ARM_PIC_CPU_IRQ:
        if (level)
            cpu_interrupt(env, CPU_INTERRUPT_HARD);
        else
            cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
        break;
    case ARM_PIC_CPU_FIQ:
        if (level)
            cpu_interrupt(env, CPU_INTERRUPT_FIQ);
        else
            cpu_reset_interrupt(env, CPU_INTERRUPT_FIQ);
        break;
    default:
        hw_error("arm_pic_cpu_handler: Bad interrupt line %d\n", irq);
    }
}

qemu_irq *arm_pic_init_cpu(CPUARMState *env)
{
    return qemu_allocate_irqs(arm_pic_cpu_handler, env, 2);
}

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