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1/*
2 * ARM RealView Emulation Baseboard Interrupt Controller
3 *
4 * Copyright (c) 2006-2007 CodeSourcery.
5 * Written by Paul Brook
6 *
8e31bf38 7 * This code is licensed under the GPL.
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8 */
9
83c9f4ca 10#include "hw/sysbus.h"
9ee6e8bb 11
fe7e8758 12typedef struct {
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13 SysBusDevice busdev;
14 DeviceState *gic;
755c0802 15 MemoryRegion container;
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16} RealViewGICState;
17
fbbd05dc 18static void realview_gic_set_irq(void *opaque, int irq, int level)
9ee6e8bb 19{
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20 RealViewGICState *s = (RealViewGICState *)opaque;
21 qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level);
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22}
23
81a322d4 24static int realview_gic_init(SysBusDevice *dev)
fe7e8758 25{
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26 RealViewGICState *s = FROM_SYSBUS(RealViewGICState, dev);
27 SysBusDevice *busdev;
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28 /* The GICs on the RealView boards have a fixed nonconfigurable
29 * number of interrupt lines, so we don't need to expose this as
30 * a qdev property.
31 */
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32 int numirq = 96;
33
34 s->gic = qdev_create(NULL, "arm_gic");
35 qdev_prop_set_uint32(s->gic, "num-cpu", 1);
36 qdev_prop_set_uint32(s->gic, "num-irq", numirq);
37 qdev_init_nofail(s->gic);
1356b98d 38 busdev = SYS_BUS_DEVICE(s->gic);
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39
40 /* Pass through outbound IRQ lines from the GIC */
41 sysbus_pass_irq(dev, busdev);
42
43 /* Pass through inbound GPIO lines to the GIC */
44 qdev_init_gpio_in(&s->busdev.qdev, realview_gic_set_irq, numirq - 32);
45
46 memory_region_init(&s->container, "realview-gic-container", 0x2000);
47 memory_region_add_subregion(&s->container, 0,
48 sysbus_mmio_get_region(busdev, 1));
49 memory_region_add_subregion(&s->container, 0x1000,
50 sysbus_mmio_get_region(busdev, 0));
750ecd44 51 sysbus_init_mmio(dev, &s->container);
81a322d4 52 return 0;
9ee6e8bb 53}
fe7e8758 54
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55static void realview_gic_class_init(ObjectClass *klass, void *data)
56{
57 SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
58
59 sdc->init = realview_gic_init;
60}
61
8c43a6f0 62static const TypeInfo realview_gic_info = {
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63 .name = "realview_gic",
64 .parent = TYPE_SYS_BUS_DEVICE,
65 .instance_size = sizeof(RealViewGICState),
66 .class_init = realview_gic_class_init,
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67};
68
83f7d43a 69static void realview_gic_register_types(void)
fe7e8758 70{
39bffca2 71 type_register_static(&realview_gic_info);
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72}
73
83f7d43a 74type_init(realview_gic_register_types)