Archipelago » qemu

/*

 * Generic ARM Programmable Interrupt Controller support.

 *

 * Copyright (c) 2006 CodeSourcery.

 * Written by Paul Brook

 *

 * This code is licensed under the LGPL

 */

#include "hw/hw.h"

#include "hw/arm.h"

#include "sysemu/kvm.h"

/* Input 0 is IRQ and input 1 is FIQ.  */

static void arm_pic_cpu_handler(void *opaque, int irq, int level)

{

    ARMCPU *cpu = opaque;

    CPUState *cs = CPU(cpu);

    switch (irq) {

    case ARM_PIC_CPU_IRQ:

        if (level) {

            cpu_interrupt(cs, CPU_INTERRUPT_HARD);

        } else {

            cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);

        }

        break;

    case ARM_PIC_CPU_FIQ:

        if (level) {

            cpu_interrupt(cs, CPU_INTERRUPT_FIQ);

        } else {

            cpu_reset_interrupt(cs, CPU_INTERRUPT_FIQ);

        }

        break;

    default:

        hw_error("arm_pic_cpu_handler: Bad interrupt line %d\n", irq);

    }

}

static void kvm_arm_pic_cpu_handler(void *opaque, int irq, int level)

{

#ifdef CONFIG_KVM

    ARMCPU *cpu = opaque;

    CPUState *cs = CPU(cpu);

    int kvm_irq = KVM_ARM_IRQ_TYPE_CPU << KVM_ARM_IRQ_TYPE_SHIFT;

    switch (irq) {

    case ARM_PIC_CPU_IRQ:

        kvm_irq |= KVM_ARM_IRQ_CPU_IRQ;

        break;

    case ARM_PIC_CPU_FIQ:

        kvm_irq |= KVM_ARM_IRQ_CPU_FIQ;

        break;

    default:

        hw_error("kvm_arm_pic_cpu_handler: Bad interrupt line %d\n", irq);

    }

    kvm_irq |= cs->cpu_index << KVM_ARM_IRQ_VCPU_SHIFT;

    kvm_set_irq(kvm_state, kvm_irq, level ? 1 : 0);

#endif

}

qemu_irq *arm_pic_init_cpu(ARMCPU *cpu)

{

    if (kvm_enabled()) {

        return qemu_allocate_irqs(kvm_arm_pic_cpu_handler, cpu, 2);

    }

    return qemu_allocate_irqs(arm_pic_cpu_handler, cpu, 2);

}