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 | |
17 | static 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 | |
24 | static 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 | |
56 | static 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 | |
69 | static 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 | |
76 | static 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 | |
84 | static void realview_gic_register_types(void) |
85 | { |
86 | type_register_static(&realview_gic_info); |
87 | } |
88 | |
89 | type_init(realview_gic_register_types) |
90 | |