root / hw / cpu / icc_bus.c @ f487b677
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1 | f0513d2c | Igor Mammedov | /* icc_bus.c
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2 | f0513d2c | Igor Mammedov | * emulate x86 ICC (Interrupt Controller Communications) bus
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3 | f0513d2c | Igor Mammedov | *
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4 | f0513d2c | Igor Mammedov | * Copyright (c) 2013 Red Hat, Inc
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5 | f0513d2c | Igor Mammedov | *
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6 | f0513d2c | Igor Mammedov | * Authors:
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7 | f0513d2c | Igor Mammedov | * Igor Mammedov <imammedo@redhat.com>
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8 | f0513d2c | Igor Mammedov | *
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9 | f0513d2c | Igor Mammedov | * This library is free software; you can redistribute it and/or
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10 | f0513d2c | Igor Mammedov | * modify it under the terms of the GNU Lesser General Public
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11 | f0513d2c | Igor Mammedov | * License as published by the Free Software Foundation; either
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12 | f0513d2c | Igor Mammedov | * version 2 of the License, or (at your option) any later version.
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13 | f0513d2c | Igor Mammedov | *
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14 | f0513d2c | Igor Mammedov | * This library is distributed in the hope that it will be useful,
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15 | f0513d2c | Igor Mammedov | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 | f0513d2c | Igor Mammedov | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 | f0513d2c | Igor Mammedov | * Lesser General Public License for more details.
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18 | f0513d2c | Igor Mammedov | *
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19 | f0513d2c | Igor Mammedov | * You should have received a copy of the GNU Lesser General Public
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20 | f0513d2c | Igor Mammedov | * License along with this library; if not, see <http://www.gnu.org/licenses/>
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21 | f0513d2c | Igor Mammedov | */
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22 | f0513d2c | Igor Mammedov | #include "hw/cpu/icc_bus.h" |
23 | f0513d2c | Igor Mammedov | #include "hw/sysbus.h" |
24 | f0513d2c | Igor Mammedov | |
25 | f0513d2c | Igor Mammedov | /* icc-bridge implementation */
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26 | f0513d2c | Igor Mammedov | |
27 | f0513d2c | Igor Mammedov | static void icc_bus_init(Object *obj) |
28 | f0513d2c | Igor Mammedov | { |
29 | f0513d2c | Igor Mammedov | BusState *b = BUS(obj); |
30 | f0513d2c | Igor Mammedov | |
31 | f0513d2c | Igor Mammedov | b->allow_hotplug = true;
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32 | f0513d2c | Igor Mammedov | } |
33 | f0513d2c | Igor Mammedov | |
34 | f0513d2c | Igor Mammedov | static const TypeInfo icc_bus_info = { |
35 | f0513d2c | Igor Mammedov | .name = TYPE_ICC_BUS, |
36 | f0513d2c | Igor Mammedov | .parent = TYPE_BUS, |
37 | f0513d2c | Igor Mammedov | .instance_size = sizeof(ICCBus),
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38 | f0513d2c | Igor Mammedov | .instance_init = icc_bus_init, |
39 | f0513d2c | Igor Mammedov | }; |
40 | f0513d2c | Igor Mammedov | |
41 | f0513d2c | Igor Mammedov | |
42 | f0513d2c | Igor Mammedov | /* icc-device implementation */
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43 | f0513d2c | Igor Mammedov | |
44 | f0513d2c | Igor Mammedov | static void icc_device_realize(DeviceState *dev, Error **errp) |
45 | f0513d2c | Igor Mammedov | { |
46 | f0513d2c | Igor Mammedov | ICCDevice *id = ICC_DEVICE(dev); |
47 | f0513d2c | Igor Mammedov | ICCDeviceClass *idc = ICC_DEVICE_GET_CLASS(id); |
48 | f0513d2c | Igor Mammedov | |
49 | f0513d2c | Igor Mammedov | if (idc->init) {
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50 | f0513d2c | Igor Mammedov | if (idc->init(id) < 0) { |
51 | f0513d2c | Igor Mammedov | error_setg(errp, "%s initialization failed.",
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52 | f0513d2c | Igor Mammedov | object_get_typename(OBJECT(dev))); |
53 | f0513d2c | Igor Mammedov | } |
54 | f0513d2c | Igor Mammedov | } |
55 | f0513d2c | Igor Mammedov | } |
56 | f0513d2c | Igor Mammedov | |
57 | f0513d2c | Igor Mammedov | static void icc_device_class_init(ObjectClass *oc, void *data) |
58 | f0513d2c | Igor Mammedov | { |
59 | f0513d2c | Igor Mammedov | DeviceClass *dc = DEVICE_CLASS(oc); |
60 | f0513d2c | Igor Mammedov | |
61 | f0513d2c | Igor Mammedov | dc->realize = icc_device_realize; |
62 | f0513d2c | Igor Mammedov | dc->bus_type = TYPE_ICC_BUS; |
63 | f0513d2c | Igor Mammedov | } |
64 | f0513d2c | Igor Mammedov | |
65 | f0513d2c | Igor Mammedov | static const TypeInfo icc_device_info = { |
66 | f0513d2c | Igor Mammedov | .name = TYPE_ICC_DEVICE, |
67 | f0513d2c | Igor Mammedov | .parent = TYPE_DEVICE, |
68 | f0513d2c | Igor Mammedov | .abstract = true,
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69 | f0513d2c | Igor Mammedov | .instance_size = sizeof(ICCDevice),
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70 | f0513d2c | Igor Mammedov | .class_size = sizeof(ICCDeviceClass),
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71 | f0513d2c | Igor Mammedov | .class_init = icc_device_class_init, |
72 | f0513d2c | Igor Mammedov | }; |
73 | f0513d2c | Igor Mammedov | |
74 | f0513d2c | Igor Mammedov | |
75 | f0513d2c | Igor Mammedov | /* icc-bridge implementation */
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76 | f0513d2c | Igor Mammedov | |
77 | f0513d2c | Igor Mammedov | typedef struct ICCBridgeState { |
78 | f0513d2c | Igor Mammedov | /*< private >*/
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79 | f0513d2c | Igor Mammedov | SysBusDevice parent_obj; |
80 | f0513d2c | Igor Mammedov | /*< public >*/
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81 | f0513d2c | Igor Mammedov | |
82 | f0513d2c | Igor Mammedov | ICCBus icc_bus; |
83 | 53a89e26 | Igor Mammedov | MemoryRegion apic_container; |
84 | f0513d2c | Igor Mammedov | } ICCBridgeState; |
85 | f0513d2c | Igor Mammedov | |
86 | f0513d2c | Igor Mammedov | #define ICC_BRIGDE(obj) OBJECT_CHECK(ICCBridgeState, (obj), TYPE_ICC_BRIDGE)
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87 | f0513d2c | Igor Mammedov | |
88 | f0513d2c | Igor Mammedov | static void icc_bridge_init(Object *obj) |
89 | f0513d2c | Igor Mammedov | { |
90 | f0513d2c | Igor Mammedov | ICCBridgeState *s = ICC_BRIGDE(obj); |
91 | 53a89e26 | Igor Mammedov | SysBusDevice *sb = SYS_BUS_DEVICE(obj); |
92 | f0513d2c | Igor Mammedov | |
93 | f0513d2c | Igor Mammedov | qbus_create_inplace(&s->icc_bus, TYPE_ICC_BUS, DEVICE(s), "icc");
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94 | 53a89e26 | Igor Mammedov | |
95 | 53a89e26 | Igor Mammedov | /* Do not change order of registering regions,
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96 | 53a89e26 | Igor Mammedov | * APIC must be first registered region, board maps it by 0 index
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97 | 53a89e26 | Igor Mammedov | */
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98 | 53a89e26 | Igor Mammedov | memory_region_init(&s->apic_container, "icc-apic-container",
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99 | 53a89e26 | Igor Mammedov | APIC_SPACE_SIZE); |
100 | 53a89e26 | Igor Mammedov | sysbus_init_mmio(sb, &s->apic_container); |
101 | 53a89e26 | Igor Mammedov | s->icc_bus.apic_address_space = &s->apic_container; |
102 | f0513d2c | Igor Mammedov | } |
103 | f0513d2c | Igor Mammedov | |
104 | f0513d2c | Igor Mammedov | static const TypeInfo icc_bridge_info = { |
105 | f0513d2c | Igor Mammedov | .name = TYPE_ICC_BRIDGE, |
106 | f0513d2c | Igor Mammedov | .parent = TYPE_SYS_BUS_DEVICE, |
107 | f0513d2c | Igor Mammedov | .instance_init = icc_bridge_init, |
108 | f0513d2c | Igor Mammedov | .instance_size = sizeof(ICCBridgeState),
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109 | f0513d2c | Igor Mammedov | }; |
110 | f0513d2c | Igor Mammedov | |
111 | f0513d2c | Igor Mammedov | |
112 | f0513d2c | Igor Mammedov | static void icc_bus_register_types(void) |
113 | f0513d2c | Igor Mammedov | { |
114 | f0513d2c | Igor Mammedov | type_register_static(&icc_bus_info); |
115 | f0513d2c | Igor Mammedov | type_register_static(&icc_device_info); |
116 | f0513d2c | Igor Mammedov | type_register_static(&icc_bridge_info); |
117 | f0513d2c | Igor Mammedov | } |
118 | f0513d2c | Igor Mammedov | |
119 | f0513d2c | Igor Mammedov | type_init(icc_bus_register_types) |