87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
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/*
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* ARM RealView Emulation Baseboard Interrupt Controller
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*
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* Copyright (c) 2006-2007 CodeSourcery.
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* Written by Paul Brook
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*
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* This code is licensed under the GPL.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu/module.h"
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#include "hw/intc/realview_gic.h"
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#include "hw/irq.h"
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#include "hw/qdev-properties.h"
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static void realview_gic_set_irq(void *opaque, int irq, int level)
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{
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RealViewGICState *s = (RealViewGICState *)opaque;
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qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
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}
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static void realview_gic_realize(DeviceState *dev, Error **errp)
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{
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SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
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RealViewGICState *s = REALVIEW_GIC(dev);
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SysBusDevice *busdev;
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/* The GICs on the RealView boards have a fixed nonconfigurable
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* number of interrupt lines, so we don't need to expose this as
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* a qdev property.
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*/
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int numirq = 96;
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qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", numirq);
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if (!sysbus_realize(SYS_BUS_DEVICE(&s->gic), errp)) {
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return;
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}
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busdev = SYS_BUS_DEVICE(&s->gic);
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/* Pass through outbound IRQ lines from the GIC */
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sysbus_pass_irq(sbd, busdev);
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/* Pass through inbound GPIO lines to the GIC */
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qdev_init_gpio_in(dev, realview_gic_set_irq, numirq - 32);
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memory_region_add_subregion(&s->container, 0,
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sysbus_mmio_get_region(busdev, 1));
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memory_region_add_subregion(&s->container, 0x1000,
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sysbus_mmio_get_region(busdev, 0));
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}
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static void realview_gic_init(Object *obj)
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{
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SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
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RealViewGICState *s = REALVIEW_GIC(obj);
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memory_region_init(&s->container, OBJECT(s),
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"realview-gic-container", 0x2000);
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sysbus_init_mmio(sbd, &s->container);
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object_initialize_child(obj, "gic", &s->gic, TYPE_ARM_GIC);
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qdev_prop_set_uint32(DEVICE(&s->gic), "num-cpu", 1);
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}
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static void realview_gic_class_init(ObjectClass *oc, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(oc);
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dc->realize = realview_gic_realize;
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}
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static const TypeInfo realview_gic_info = {
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.name = TYPE_REALVIEW_GIC,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(RealViewGICState),
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.instance_init = realview_gic_init,
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.class_init = realview_gic_class_init,
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};
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static void realview_gic_register_types(void)
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{
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type_register_static(&realview_gic_info);
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}
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type_init(realview_gic_register_types)
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