Archipelago » qemu

/*

 * ARM RealView Emulation Baseboard Interrupt Controller

 *

 * Copyright (c) 2006-2007 CodeSourcery.

 * Written by Paul Brook

 *

 * This code is licensed under the GPL.

 */

#include "hw/intc/realview_gic.h"

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

{

    RealViewGICState *s = (RealViewGICState *)opaque;

    qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);

}

static void realview_gic_realize(DeviceState *dev, Error **errp)

{

    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);

    RealViewGICState *s = REALVIEW_GIC(dev);

    SysBusDevice *busdev;

    Error *err = NULL;

    /* The GICs on the RealView boards have a fixed nonconfigurable

     * number of interrupt lines, so we don't need to expose this as

     * a qdev property.

     */

    int numirq = 96;

    qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", numirq);

    object_property_set_bool(OBJECT(&s->gic), true, "realized", &err);

    if (err != NULL) {

        error_propagate(errp, err);

        return;

    }

    busdev = SYS_BUS_DEVICE(&s->gic);

    /* Pass through outbound IRQ lines from the GIC */

    sysbus_pass_irq(sbd, busdev);

    /* Pass through inbound GPIO lines to the GIC */

    qdev_init_gpio_in(dev, realview_gic_set_irq, numirq - 32);

    memory_region_add_subregion(&s->container, 0,

                                sysbus_mmio_get_region(busdev, 1));

    memory_region_add_subregion(&s->container, 0x1000,

                                sysbus_mmio_get_region(busdev, 0));

}

static void realview_gic_init(Object *obj)

{

    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);

    RealViewGICState *s = REALVIEW_GIC(obj);

    DeviceState *gicdev;

    memory_region_init(&s->container, OBJECT(s),

                       "realview-gic-container", 0x2000);

    sysbus_init_mmio(sbd, &s->container);

    object_initialize(&s->gic, sizeof(s->gic), TYPE_ARM_GIC);

    gicdev = DEVICE(&s->gic);

    qdev_set_parent_bus(gicdev, sysbus_get_default());

    qdev_prop_set_uint32(gicdev, "num-cpu", 1);

}

static void realview_gic_class_init(ObjectClass *oc, void *data)

{

    DeviceClass *dc = DEVICE_CLASS(oc);

    dc->realize = realview_gic_realize;

}

static const TypeInfo realview_gic_info = {

    .name          = TYPE_REALVIEW_GIC,

    .parent        = TYPE_SYS_BUS_DEVICE,

    .instance_size = sizeof(RealViewGICState),

    .instance_init = realview_gic_init,

    .class_init    = realview_gic_class_init,

};

static void realview_gic_register_types(void)

{

    type_register_static(&realview_gic_info);

}

type_init(realview_gic_register_types)