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512709f5 JK |
1 | /* |
2 | * QEMU 8259 - common bits of emulated and KVM kernel model | |
3 | * | |
4 | * Copyright (c) 2003-2004 Fabrice Bellard | |
5 | * Copyright (c) 2011 Jan Kiszka, Siemens AG | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
23 | * THE SOFTWARE. | |
24 | */ | |
0d09e41a PB |
25 | #include "hw/i386/pc.h" |
26 | #include "hw/isa/i8259_internal.h" | |
512709f5 JK |
27 | |
28 | void pic_reset_common(PICCommonState *s) | |
29 | { | |
30 | s->last_irr = 0; | |
aa24822b | 31 | s->irr &= s->elcr; |
512709f5 JK |
32 | s->imr = 0; |
33 | s->isr = 0; | |
34 | s->priority_add = 0; | |
35 | s->irq_base = 0; | |
36 | s->read_reg_select = 0; | |
37 | s->poll = 0; | |
38 | s->special_mask = 0; | |
39 | s->init_state = 0; | |
40 | s->auto_eoi = 0; | |
41 | s->rotate_on_auto_eoi = 0; | |
42 | s->special_fully_nested_mode = 0; | |
43 | s->init4 = 0; | |
44 | s->single_mode = 0; | |
45 | /* Note: ELCR is not reset */ | |
46 | } | |
47 | ||
48 | static void pic_dispatch_pre_save(void *opaque) | |
49 | { | |
50 | PICCommonState *s = opaque; | |
8f04ee08 | 51 | PICCommonClass *info = PIC_COMMON_GET_CLASS(s); |
512709f5 JK |
52 | |
53 | if (info->pre_save) { | |
54 | info->pre_save(s); | |
55 | } | |
56 | } | |
57 | ||
58 | static int pic_dispatch_post_load(void *opaque, int version_id) | |
59 | { | |
60 | PICCommonState *s = opaque; | |
8f04ee08 | 61 | PICCommonClass *info = PIC_COMMON_GET_CLASS(s); |
512709f5 JK |
62 | |
63 | if (info->post_load) { | |
64 | info->post_load(s); | |
65 | } | |
66 | return 0; | |
67 | } | |
68 | ||
db895a1e | 69 | static void pic_common_realize(DeviceState *dev, Error **errp) |
512709f5 | 70 | { |
29bb5317 | 71 | PICCommonState *s = PIC_COMMON(dev); |
8f04ee08 | 72 | PICCommonClass *info = PIC_COMMON_GET_CLASS(s); |
512709f5 JK |
73 | |
74 | info->init(s); | |
75 | ||
76 | isa_register_ioport(NULL, &s->base_io, s->iobase); | |
77 | if (s->elcr_addr != -1) { | |
78 | isa_register_ioport(NULL, &s->elcr_io, s->elcr_addr); | |
79 | } | |
80 | ||
db895a1e | 81 | qdev_set_legacy_instance_id(dev, s->iobase, 1); |
512709f5 JK |
82 | } |
83 | ||
84 | ISADevice *i8259_init_chip(const char *name, ISABus *bus, bool master) | |
85 | { | |
86 | ISADevice *dev; | |
87 | ||
88 | dev = isa_create(bus, name); | |
89 | qdev_prop_set_uint32(&dev->qdev, "iobase", master ? 0x20 : 0xa0); | |
90 | qdev_prop_set_uint32(&dev->qdev, "elcr_addr", master ? 0x4d0 : 0x4d1); | |
91 | qdev_prop_set_uint8(&dev->qdev, "elcr_mask", master ? 0xf8 : 0xde); | |
92 | qdev_prop_set_bit(&dev->qdev, "master", master); | |
93 | qdev_init_nofail(&dev->qdev); | |
94 | ||
95 | return dev; | |
96 | } | |
97 | ||
98 | static const VMStateDescription vmstate_pic_common = { | |
99 | .name = "i8259", | |
100 | .version_id = 1, | |
101 | .minimum_version_id = 1, | |
102 | .minimum_version_id_old = 1, | |
103 | .pre_save = pic_dispatch_pre_save, | |
104 | .post_load = pic_dispatch_post_load, | |
105 | .fields = (VMStateField[]) { | |
106 | VMSTATE_UINT8(last_irr, PICCommonState), | |
107 | VMSTATE_UINT8(irr, PICCommonState), | |
108 | VMSTATE_UINT8(imr, PICCommonState), | |
109 | VMSTATE_UINT8(isr, PICCommonState), | |
110 | VMSTATE_UINT8(priority_add, PICCommonState), | |
111 | VMSTATE_UINT8(irq_base, PICCommonState), | |
112 | VMSTATE_UINT8(read_reg_select, PICCommonState), | |
113 | VMSTATE_UINT8(poll, PICCommonState), | |
114 | VMSTATE_UINT8(special_mask, PICCommonState), | |
115 | VMSTATE_UINT8(init_state, PICCommonState), | |
116 | VMSTATE_UINT8(auto_eoi, PICCommonState), | |
117 | VMSTATE_UINT8(rotate_on_auto_eoi, PICCommonState), | |
118 | VMSTATE_UINT8(special_fully_nested_mode, PICCommonState), | |
119 | VMSTATE_UINT8(init4, PICCommonState), | |
120 | VMSTATE_UINT8(single_mode, PICCommonState), | |
121 | VMSTATE_UINT8(elcr, PICCommonState), | |
122 | VMSTATE_END_OF_LIST() | |
123 | } | |
124 | }; | |
125 | ||
126 | static Property pic_properties_common[] = { | |
127 | DEFINE_PROP_HEX32("iobase", PICCommonState, iobase, -1), | |
128 | DEFINE_PROP_HEX32("elcr_addr", PICCommonState, elcr_addr, -1), | |
129 | DEFINE_PROP_HEX8("elcr_mask", PICCommonState, elcr_mask, -1), | |
130 | DEFINE_PROP_BIT("master", PICCommonState, master, 0, false), | |
131 | DEFINE_PROP_END_OF_LIST(), | |
132 | }; | |
133 | ||
8f04ee08 AL |
134 | static void pic_common_class_init(ObjectClass *klass, void *data) |
135 | { | |
39bffca2 | 136 | DeviceClass *dc = DEVICE_CLASS(klass); |
8f04ee08 | 137 | |
39bffca2 AL |
138 | dc->vmsd = &vmstate_pic_common; |
139 | dc->no_user = 1; | |
140 | dc->props = pic_properties_common; | |
db895a1e | 141 | dc->realize = pic_common_realize; |
8f04ee08 AL |
142 | } |
143 | ||
8c43a6f0 | 144 | static const TypeInfo pic_common_type = { |
8f04ee08 AL |
145 | .name = TYPE_PIC_COMMON, |
146 | .parent = TYPE_ISA_DEVICE, | |
147 | .instance_size = sizeof(PICCommonState), | |
148 | .class_size = sizeof(PICCommonClass), | |
149 | .class_init = pic_common_class_init, | |
150 | .abstract = true, | |
151 | }; | |
152 | ||
29bb5317 | 153 | static void pic_common_register_types(void) |
8f04ee08 AL |
154 | { |
155 | type_register_static(&pic_common_type); | |
156 | } | |
157 | ||
29bb5317 | 158 | type_init(pic_common_register_types) |