root / hw / i8259_common.c @ fa156e51
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1 | 512709f5 | Jan Kiszka | /*
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2 | 512709f5 | Jan Kiszka | * QEMU 8259 - common bits of emulated and KVM kernel model
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3 | 512709f5 | Jan Kiszka | *
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4 | 512709f5 | Jan Kiszka | * Copyright (c) 2003-2004 Fabrice Bellard
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5 | 512709f5 | Jan Kiszka | * Copyright (c) 2011 Jan Kiszka, Siemens AG
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6 | 512709f5 | Jan Kiszka | *
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7 | 512709f5 | Jan Kiszka | * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 | 512709f5 | Jan Kiszka | * of this software and associated documentation files (the "Software"), to deal
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9 | 512709f5 | Jan Kiszka | * in the Software without restriction, including without limitation the rights
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10 | 512709f5 | Jan Kiszka | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 | 512709f5 | Jan Kiszka | * copies of the Software, and to permit persons to whom the Software is
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12 | 512709f5 | Jan Kiszka | * furnished to do so, subject to the following conditions:
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13 | 512709f5 | Jan Kiszka | *
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14 | 512709f5 | Jan Kiszka | * The above copyright notice and this permission notice shall be included in
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15 | 512709f5 | Jan Kiszka | * all copies or substantial portions of the Software.
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16 | 512709f5 | Jan Kiszka | *
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17 | 512709f5 | Jan Kiszka | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 | 512709f5 | Jan Kiszka | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 | 512709f5 | Jan Kiszka | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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20 | 512709f5 | Jan Kiszka | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 | 512709f5 | Jan Kiszka | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 | 512709f5 | Jan Kiszka | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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23 | 512709f5 | Jan Kiszka | * THE SOFTWARE.
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24 | 512709f5 | Jan Kiszka | */
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25 | 512709f5 | Jan Kiszka | #include "pc.h" |
26 | 512709f5 | Jan Kiszka | #include "i8259_internal.h" |
27 | 512709f5 | Jan Kiszka | |
28 | 512709f5 | Jan Kiszka | void pic_reset_common(PICCommonState *s)
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29 | 512709f5 | Jan Kiszka | { |
30 | 512709f5 | Jan Kiszka | s->last_irr = 0;
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31 | aa24822b | Jan Kiszka | s->irr &= s->elcr; |
32 | 512709f5 | Jan Kiszka | s->imr = 0;
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33 | 512709f5 | Jan Kiszka | s->isr = 0;
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34 | 512709f5 | Jan Kiszka | s->priority_add = 0;
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35 | 512709f5 | Jan Kiszka | s->irq_base = 0;
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36 | 512709f5 | Jan Kiszka | s->read_reg_select = 0;
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37 | 512709f5 | Jan Kiszka | s->poll = 0;
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38 | 512709f5 | Jan Kiszka | s->special_mask = 0;
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39 | 512709f5 | Jan Kiszka | s->init_state = 0;
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40 | 512709f5 | Jan Kiszka | s->auto_eoi = 0;
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41 | 512709f5 | Jan Kiszka | s->rotate_on_auto_eoi = 0;
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42 | 512709f5 | Jan Kiszka | s->special_fully_nested_mode = 0;
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43 | 512709f5 | Jan Kiszka | s->init4 = 0;
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44 | 512709f5 | Jan Kiszka | s->single_mode = 0;
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45 | 512709f5 | Jan Kiszka | /* Note: ELCR is not reset */
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46 | 512709f5 | Jan Kiszka | } |
47 | 512709f5 | Jan Kiszka | |
48 | 512709f5 | Jan Kiszka | static void pic_dispatch_pre_save(void *opaque) |
49 | 512709f5 | Jan Kiszka | { |
50 | 512709f5 | Jan Kiszka | PICCommonState *s = opaque; |
51 | 8f04ee08 | Anthony Liguori | PICCommonClass *info = PIC_COMMON_GET_CLASS(s); |
52 | 512709f5 | Jan Kiszka | |
53 | 512709f5 | Jan Kiszka | if (info->pre_save) {
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54 | 512709f5 | Jan Kiszka | info->pre_save(s); |
55 | 512709f5 | Jan Kiszka | } |
56 | 512709f5 | Jan Kiszka | } |
57 | 512709f5 | Jan Kiszka | |
58 | 512709f5 | Jan Kiszka | static int pic_dispatch_post_load(void *opaque, int version_id) |
59 | 512709f5 | Jan Kiszka | { |
60 | 512709f5 | Jan Kiszka | PICCommonState *s = opaque; |
61 | 8f04ee08 | Anthony Liguori | PICCommonClass *info = PIC_COMMON_GET_CLASS(s); |
62 | 512709f5 | Jan Kiszka | |
63 | 512709f5 | Jan Kiszka | if (info->post_load) {
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64 | 512709f5 | Jan Kiszka | info->post_load(s); |
65 | 512709f5 | Jan Kiszka | } |
66 | 512709f5 | Jan Kiszka | return 0; |
67 | 512709f5 | Jan Kiszka | } |
68 | 512709f5 | Jan Kiszka | |
69 | 512709f5 | Jan Kiszka | static int pic_init_common(ISADevice *dev) |
70 | 512709f5 | Jan Kiszka | { |
71 | 512709f5 | Jan Kiszka | PICCommonState *s = DO_UPCAST(PICCommonState, dev, dev); |
72 | 8f04ee08 | Anthony Liguori | PICCommonClass *info = PIC_COMMON_GET_CLASS(s); |
73 | 512709f5 | Jan Kiszka | |
74 | 512709f5 | Jan Kiszka | info->init(s); |
75 | 512709f5 | Jan Kiszka | |
76 | 512709f5 | Jan Kiszka | isa_register_ioport(NULL, &s->base_io, s->iobase);
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77 | 512709f5 | Jan Kiszka | if (s->elcr_addr != -1) { |
78 | 512709f5 | Jan Kiszka | isa_register_ioport(NULL, &s->elcr_io, s->elcr_addr);
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79 | 512709f5 | Jan Kiszka | } |
80 | 512709f5 | Jan Kiszka | |
81 | 512709f5 | Jan Kiszka | qdev_set_legacy_instance_id(&s->dev.qdev, s->iobase, 1);
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82 | 512709f5 | Jan Kiszka | |
83 | 512709f5 | Jan Kiszka | return 0; |
84 | 512709f5 | Jan Kiszka | } |
85 | 512709f5 | Jan Kiszka | |
86 | 512709f5 | Jan Kiszka | ISADevice *i8259_init_chip(const char *name, ISABus *bus, bool master) |
87 | 512709f5 | Jan Kiszka | { |
88 | 512709f5 | Jan Kiszka | ISADevice *dev; |
89 | 512709f5 | Jan Kiszka | |
90 | 512709f5 | Jan Kiszka | dev = isa_create(bus, name); |
91 | 512709f5 | Jan Kiszka | qdev_prop_set_uint32(&dev->qdev, "iobase", master ? 0x20 : 0xa0); |
92 | 512709f5 | Jan Kiszka | qdev_prop_set_uint32(&dev->qdev, "elcr_addr", master ? 0x4d0 : 0x4d1); |
93 | 512709f5 | Jan Kiszka | qdev_prop_set_uint8(&dev->qdev, "elcr_mask", master ? 0xf8 : 0xde); |
94 | 512709f5 | Jan Kiszka | qdev_prop_set_bit(&dev->qdev, "master", master);
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95 | 512709f5 | Jan Kiszka | qdev_init_nofail(&dev->qdev); |
96 | 512709f5 | Jan Kiszka | |
97 | 512709f5 | Jan Kiszka | return dev;
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98 | 512709f5 | Jan Kiszka | } |
99 | 512709f5 | Jan Kiszka | |
100 | 512709f5 | Jan Kiszka | static const VMStateDescription vmstate_pic_common = { |
101 | 512709f5 | Jan Kiszka | .name = "i8259",
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102 | 512709f5 | Jan Kiszka | .version_id = 1,
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103 | 512709f5 | Jan Kiszka | .minimum_version_id = 1,
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104 | 512709f5 | Jan Kiszka | .minimum_version_id_old = 1,
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105 | 512709f5 | Jan Kiszka | .pre_save = pic_dispatch_pre_save, |
106 | 512709f5 | Jan Kiszka | .post_load = pic_dispatch_post_load, |
107 | 512709f5 | Jan Kiszka | .fields = (VMStateField[]) { |
108 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(last_irr, PICCommonState), |
109 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(irr, PICCommonState), |
110 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(imr, PICCommonState), |
111 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(isr, PICCommonState), |
112 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(priority_add, PICCommonState), |
113 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(irq_base, PICCommonState), |
114 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(read_reg_select, PICCommonState), |
115 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(poll, PICCommonState), |
116 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(special_mask, PICCommonState), |
117 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(init_state, PICCommonState), |
118 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(auto_eoi, PICCommonState), |
119 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(rotate_on_auto_eoi, PICCommonState), |
120 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(special_fully_nested_mode, PICCommonState), |
121 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(init4, PICCommonState), |
122 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(single_mode, PICCommonState), |
123 | 512709f5 | Jan Kiszka | VMSTATE_UINT8(elcr, PICCommonState), |
124 | 512709f5 | Jan Kiszka | VMSTATE_END_OF_LIST() |
125 | 512709f5 | Jan Kiszka | } |
126 | 512709f5 | Jan Kiszka | }; |
127 | 512709f5 | Jan Kiszka | |
128 | 512709f5 | Jan Kiszka | static Property pic_properties_common[] = {
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129 | 512709f5 | Jan Kiszka | DEFINE_PROP_HEX32("iobase", PICCommonState, iobase, -1), |
130 | 512709f5 | Jan Kiszka | DEFINE_PROP_HEX32("elcr_addr", PICCommonState, elcr_addr, -1), |
131 | 512709f5 | Jan Kiszka | DEFINE_PROP_HEX8("elcr_mask", PICCommonState, elcr_mask, -1), |
132 | 512709f5 | Jan Kiszka | DEFINE_PROP_BIT("master", PICCommonState, master, 0, false), |
133 | 512709f5 | Jan Kiszka | DEFINE_PROP_END_OF_LIST(), |
134 | 512709f5 | Jan Kiszka | }; |
135 | 512709f5 | Jan Kiszka | |
136 | 8f04ee08 | Anthony Liguori | static void pic_common_class_init(ObjectClass *klass, void *data) |
137 | 8f04ee08 | Anthony Liguori | { |
138 | 8f04ee08 | Anthony Liguori | ISADeviceClass *ic = ISA_DEVICE_CLASS(klass); |
139 | 39bffca2 | Anthony Liguori | DeviceClass *dc = DEVICE_CLASS(klass); |
140 | 8f04ee08 | Anthony Liguori | |
141 | 39bffca2 | Anthony Liguori | dc->vmsd = &vmstate_pic_common; |
142 | 39bffca2 | Anthony Liguori | dc->no_user = 1;
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143 | 39bffca2 | Anthony Liguori | dc->props = pic_properties_common; |
144 | 8f04ee08 | Anthony Liguori | ic->init = pic_init_common; |
145 | 8f04ee08 | Anthony Liguori | } |
146 | 8f04ee08 | Anthony Liguori | |
147 | 8f04ee08 | Anthony Liguori | static TypeInfo pic_common_type = {
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148 | 8f04ee08 | Anthony Liguori | .name = TYPE_PIC_COMMON, |
149 | 8f04ee08 | Anthony Liguori | .parent = TYPE_ISA_DEVICE, |
150 | 8f04ee08 | Anthony Liguori | .instance_size = sizeof(PICCommonState),
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151 | 8f04ee08 | Anthony Liguori | .class_size = sizeof(PICCommonClass),
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152 | 8f04ee08 | Anthony Liguori | .class_init = pic_common_class_init, |
153 | 8f04ee08 | Anthony Liguori | .abstract = true,
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154 | 8f04ee08 | Anthony Liguori | }; |
155 | 8f04ee08 | Anthony Liguori | |
156 | 83f7d43a | Andreas Färber | static void register_types(void) |
157 | 8f04ee08 | Anthony Liguori | { |
158 | 8f04ee08 | Anthony Liguori | type_register_static(&pic_common_type); |
159 | 8f04ee08 | Anthony Liguori | } |
160 | 8f04ee08 | Anthony Liguori | |
161 | 83f7d43a | Andreas Färber | type_init(register_types); |