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/*
* 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-misc.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;
CPUARMState *env = &cpu->env;
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);
}
}
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);
}
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