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/*
* ARM RealView Emulation Baseboard Interrupt Controller
*
* Copyright (c) 2006-2007 CodeSourcery.
* Written by Paul Brook
*
* This code is licensed under the GPL.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "hw/intc/realview_gic.h"
#include "hw/irq.h"
#include "hw/qdev-properties.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;
/* 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);
if (!sysbus_realize(SYS_BUS_DEVICE(&s->gic), errp)) {
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);
memory_region_init(&s->container, OBJECT(s),
"realview-gic-container", 0x2000);
sysbus_init_mmio(sbd, &s->container);
object_initialize_child(obj, "gic", &s->gic, TYPE_ARM_GIC);
qdev_prop_set_uint32(DEVICE(&s->gic), "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)
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