root / hw / realview_gic.c @ a1bc20df
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1 | 9ee6e8bb | pbrook | /*
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2 | 9ee6e8bb | pbrook | * ARM RealView Emulation Baseboard Interrupt Controller
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3 | 9ee6e8bb | pbrook | *
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4 | 9ee6e8bb | pbrook | * Copyright (c) 2006-2007 CodeSourcery.
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5 | 9ee6e8bb | pbrook | * Written by Paul Brook
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6 | 9ee6e8bb | pbrook | *
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7 | 8e31bf38 | Matthew Fernandez | * This code is licensed under the GPL.
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8 | 9ee6e8bb | pbrook | */
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9 | 9ee6e8bb | pbrook | |
10 | fe7e8758 | Paul Brook | #include "sysbus.h" |
11 | 9ee6e8bb | pbrook | |
12 | fe7e8758 | Paul Brook | typedef struct { |
13 | fbbd05dc | Peter Maydell | SysBusDevice busdev; |
14 | fbbd05dc | Peter Maydell | DeviceState *gic; |
15 | 755c0802 | Avi Kivity | MemoryRegion container; |
16 | fe7e8758 | Paul Brook | } RealViewGICState; |
17 | fe7e8758 | Paul Brook | |
18 | fbbd05dc | Peter Maydell | static void realview_gic_set_irq(void *opaque, int irq, int level) |
19 | 9ee6e8bb | pbrook | { |
20 | fbbd05dc | Peter Maydell | RealViewGICState *s = (RealViewGICState *)opaque; |
21 | fbbd05dc | Peter Maydell | qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level); |
22 | fe7e8758 | Paul Brook | } |
23 | fe7e8758 | Paul Brook | |
24 | 81a322d4 | Gerd Hoffmann | static int realview_gic_init(SysBusDevice *dev) |
25 | fe7e8758 | Paul Brook | { |
26 | fbbd05dc | Peter Maydell | RealViewGICState *s = FROM_SYSBUS(RealViewGICState, dev); |
27 | fbbd05dc | Peter Maydell | SysBusDevice *busdev; |
28 | a32134aa | Mark Langsdorf | /* The GICs on the RealView boards have a fixed nonconfigurable
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29 | a32134aa | Mark Langsdorf | * number of interrupt lines, so we don't need to expose this as
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30 | a32134aa | Mark Langsdorf | * a qdev property.
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31 | a32134aa | Mark Langsdorf | */
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32 | fbbd05dc | Peter Maydell | int numirq = 96; |
33 | fbbd05dc | Peter Maydell | |
34 | fbbd05dc | Peter Maydell | s->gic = qdev_create(NULL, "arm_gic"); |
35 | fbbd05dc | Peter Maydell | qdev_prop_set_uint32(s->gic, "num-cpu", 1); |
36 | fbbd05dc | Peter Maydell | qdev_prop_set_uint32(s->gic, "num-irq", numirq);
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37 | fbbd05dc | Peter Maydell | qdev_init_nofail(s->gic); |
38 | fbbd05dc | Peter Maydell | busdev = sysbus_from_qdev(s->gic); |
39 | fbbd05dc | Peter Maydell | |
40 | fbbd05dc | Peter Maydell | /* Pass through outbound IRQ lines from the GIC */
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41 | fbbd05dc | Peter Maydell | sysbus_pass_irq(dev, busdev); |
42 | fbbd05dc | Peter Maydell | |
43 | fbbd05dc | Peter Maydell | /* Pass through inbound GPIO lines to the GIC */
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44 | fbbd05dc | Peter Maydell | qdev_init_gpio_in(&s->busdev.qdev, realview_gic_set_irq, numirq - 32);
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45 | fbbd05dc | Peter Maydell | |
46 | fbbd05dc | Peter Maydell | memory_region_init(&s->container, "realview-gic-container", 0x2000); |
47 | fbbd05dc | Peter Maydell | memory_region_add_subregion(&s->container, 0,
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48 | fbbd05dc | Peter Maydell | sysbus_mmio_get_region(busdev, 1));
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49 | fbbd05dc | Peter Maydell | memory_region_add_subregion(&s->container, 0x1000,
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50 | fbbd05dc | Peter Maydell | sysbus_mmio_get_region(busdev, 0));
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51 | 750ecd44 | Avi Kivity | sysbus_init_mmio(dev, &s->container); |
52 | 81a322d4 | Gerd Hoffmann | return 0; |
53 | 9ee6e8bb | pbrook | } |
54 | fe7e8758 | Paul Brook | |
55 | 999e12bb | Anthony Liguori | static void realview_gic_class_init(ObjectClass *klass, void *data) |
56 | 999e12bb | Anthony Liguori | { |
57 | 999e12bb | Anthony Liguori | SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass); |
58 | 999e12bb | Anthony Liguori | |
59 | 999e12bb | Anthony Liguori | sdc->init = realview_gic_init; |
60 | 999e12bb | Anthony Liguori | } |
61 | 999e12bb | Anthony Liguori | |
62 | 39bffca2 | Anthony Liguori | static TypeInfo realview_gic_info = {
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63 | 39bffca2 | Anthony Liguori | .name = "realview_gic",
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64 | 39bffca2 | Anthony Liguori | .parent = TYPE_SYS_BUS_DEVICE, |
65 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(RealViewGICState),
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66 | 39bffca2 | Anthony Liguori | .class_init = realview_gic_class_init, |
67 | 999e12bb | Anthony Liguori | }; |
68 | 999e12bb | Anthony Liguori | |
69 | 83f7d43a | Andreas Färber | static void realview_gic_register_types(void) |
70 | fe7e8758 | Paul Brook | { |
71 | 39bffca2 | Anthony Liguori | type_register_static(&realview_gic_info); |
72 | fe7e8758 | Paul Brook | } |
73 | fe7e8758 | Paul Brook | |
74 | 83f7d43a | Andreas Färber | type_init(realview_gic_register_types) |