Archipelago » qemu

/* PC Utility function */

void kvm_pc_setup_irq_routing(bool pci_enabled)

{

    KVMState *s = kvm_state;

    int i;

    if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {

        for (i = 0; i < 8; ++i) {

            if (i == 2) {

                continue;

            }

            kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_PIC_MASTER, i);

        }

        for (i = 8; i < 16; ++i) {

            kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_PIC_SLAVE, i - 8);

        }

        if (pci_enabled) {

            for (i = 0; i < 24; ++i) {

                if (i == 0) {

                    kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_IOAPIC, 2);

                } else if (i != 2) {

                    kvm_irqchip_add_irq_route(s, i, KVM_IRQCHIP_IOAPIC, i);

                }

            }

        }

    }

}

void kvm_pc_gsi_handler(void *opaque, int n, int level)

{

    GSIState *s = opaque;

    if (n < ISA_NUM_IRQS) {

        /* Kernel will forward to both PIC and IOAPIC */

        qemu_set_irq(s->i8259_irq[n], level);

    } else {

        qemu_set_irq(s->ioapic_irq[n], level);

    }

}