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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 "sysbus.h"
typedef struct {
SysBusDevice busdev;
DeviceState *gic;
MemoryRegion container;
} RealViewGICState;
static void realview_gic_set_irq(void *opaque, int irq, int level)
{
RealViewGICState *s = (RealViewGICState *)opaque;
qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level);
}
static int realview_gic_init(SysBusDevice *dev)
{
RealViewGICState *s = FROM_SYSBUS(RealViewGICState, 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;
s->gic = qdev_create(NULL, "arm_gic");
qdev_prop_set_uint32(s->gic, "num-cpu", 1);
qdev_prop_set_uint32(s->gic, "num-irq", numirq);
qdev_init_nofail(s->gic);
busdev = SYS_BUS_DEVICE(s->gic);
/* Pass through outbound IRQ lines from the GIC */
sysbus_pass_irq(dev, busdev);
/* Pass through inbound GPIO lines to the GIC */
qdev_init_gpio_in(&s->busdev.qdev, realview_gic_set_irq, numirq - 32);
memory_region_init(&s->container, "realview-gic-container", 0x2000);
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));
sysbus_init_mmio(dev, &s->container);
return 0;
}
static void realview_gic_class_init(ObjectClass *klass, void *data)
{
SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
sdc->init = realview_gic_init;
}
static const TypeInfo realview_gic_info = {
.name = "realview_gic",
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(RealViewGICState),
.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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