1/*
2 * ARM RealView Emulation Baseboard Interrupt Controller
3 *
4 * Copyright (c) 2006-2007 CodeSourcery.
5 * Written by Paul Brook
6 *
7 * This code is licensed under the GPL.
8 */
9
10#include "qemu/osdep.h"
11#include "qapi/error.h"
12#include "qemu/module.h"
13#include "hw/intc/realview_gic.h"
14#include "hw/irq.h"
15#include "hw/qdev-properties.h"
16
17static void realview_gic_set_irq(void *opaque, int irq, int level)
18{
19 RealViewGICState *s = (RealViewGICState *)opaque;
20
21 qemu_set_irq(qdev_get_gpio_in(DEVICE(&s->gic), irq), level);
22}
23
24static void realview_gic_realize(DeviceState *dev, Error **errp)
25{
26 SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
27 RealViewGICState *s = REALVIEW_GIC(dev);
28 SysBusDevice *busdev;
29 Error *err = NULL;
30 /* The GICs on the RealView boards have a fixed nonconfigurable
31 * number of interrupt lines, so we don't need to expose this as
32 * a qdev property.
33 */
34 int numirq = 96;
35
36 qdev_prop_set_uint32(DEVICE(&s->gic), "num-irq", numirq);
37 object_property_set_bool(OBJECT(&s->gic), true, "realized", &err);
38 if (err != NULL) {
39 error_propagate(errp, err);
40 return;
41 }
42 busdev = SYS_BUS_DEVICE(&s->gic);
43
44 /* Pass through outbound IRQ lines from the GIC */
45 sysbus_pass_irq(sbd, busdev);
46
47 /* Pass through inbound GPIO lines to the GIC */
48 qdev_init_gpio_in(dev, realview_gic_set_irq, numirq - 32);
49
50 memory_region_add_subregion(&s->container, 0,
51 sysbus_mmio_get_region(busdev, 1));
52 memory_region_add_subregion(&s->container, 0x1000,
53 sysbus_mmio_get_region(busdev, 0));
54}
55
56static void realview_gic_init(Object *obj)
57{
58 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
59 RealViewGICState *s = REALVIEW_GIC(obj);
60
61 memory_region_init(&s->container, OBJECT(s),
62 "realview-gic-container", 0x2000);
63 sysbus_init_mmio(sbd, &s->container);
64
65 sysbus_init_child_obj(obj, "gic", &s->gic, sizeof(s->gic), TYPE_ARM_GIC);
66 qdev_prop_set_uint32(DEVICE(&s->gic), "num-cpu", 1);
67}
68
69static void realview_gic_class_init(ObjectClass *oc, void *data)
70{
71 DeviceClass *dc = DEVICE_CLASS(oc);
72
73 dc->realize = realview_gic_realize;
74}
75
76static const TypeInfo realview_gic_info = {
77 .name = TYPE_REALVIEW_GIC,
78 .parent = TYPE_SYS_BUS_DEVICE,
79 .instance_size = sizeof(RealViewGICState),
80 .instance_init = realview_gic_init,
81 .class_init = realview_gic_class_init,
82};
83
84static void realview_gic_register_types(void)
85{
86 type_register_static(&realview_gic_info);
87}
88
89type_init(realview_gic_register_types)
90