69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/*
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* Generic ARM Programmable Interrupt Controller support.
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*
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* Copyright (c) 2006 CodeSourcery.
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* Written by Paul Brook
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*
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* This code is licensed under the LGPL
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*/
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#include "hw/hw.h"
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#include "hw/arm-misc.h"
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#include "sysemu/kvm.h"
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/* Input 0 is IRQ and input 1 is FIQ. */
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static void arm_pic_cpu_handler(void *opaque, int irq, int level)
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{
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ARMCPU *cpu = opaque;
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CPUState *cs = CPU(cpu);
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switch (irq) {
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case ARM_PIC_CPU_IRQ:
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if (level) {
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cpu_interrupt(cs, CPU_INTERRUPT_HARD);
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} else {
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cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD);
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}
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break;
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case ARM_PIC_CPU_FIQ:
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if (level) {
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cpu_interrupt(cs, CPU_INTERRUPT_FIQ);
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} else {
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cpu_reset_interrupt(cs, CPU_INTERRUPT_FIQ);
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}
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break;
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default:
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hw_error("arm_pic_cpu_handler: Bad interrupt line %d\n", irq);
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}
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}
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static void kvm_arm_pic_cpu_handler(void *opaque, int irq, int level)
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{
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#ifdef CONFIG_KVM
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ARMCPU *cpu = opaque;
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CPUState *cs = CPU(cpu);
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int kvm_irq = KVM_ARM_IRQ_TYPE_CPU << KVM_ARM_IRQ_TYPE_SHIFT;
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switch (irq) {
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case ARM_PIC_CPU_IRQ:
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kvm_irq |= KVM_ARM_IRQ_CPU_IRQ;
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break;
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case ARM_PIC_CPU_FIQ:
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kvm_irq |= KVM_ARM_IRQ_CPU_FIQ;
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break;
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default:
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hw_error("kvm_arm_pic_cpu_handler: Bad interrupt line %d\n", irq);
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}
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kvm_irq |= cs->cpu_index << KVM_ARM_IRQ_VCPU_SHIFT;
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kvm_set_irq(kvm_state, kvm_irq, level ? 1 : 0);
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#endif
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}
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qemu_irq *arm_pic_init_cpu(ARMCPU *cpu)
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{
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if (kvm_enabled()) {
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return qemu_allocate_irqs(kvm_arm_pic_cpu_handler, cpu, 2);
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}
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return qemu_allocate_irqs(arm_pic_cpu_handler, cpu, 2);
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}
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