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