root / hw / display / vga-pci.c @ 2c9b15ca
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1 | 47d37dd9 | Juan Quintela | /*
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2 | 47d37dd9 | Juan Quintela | * QEMU PCI VGA Emulator.
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3 | 47d37dd9 | Juan Quintela | *
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4 | cc228248 | Gerd Hoffmann | * see docs/specs/standard-vga.txt for virtual hardware specs.
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5 | cc228248 | Gerd Hoffmann | *
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6 | 47d37dd9 | Juan Quintela | * Copyright (c) 2003 Fabrice Bellard
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7 | 47d37dd9 | Juan Quintela | *
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8 | 47d37dd9 | Juan Quintela | * Permission is hereby granted, free of charge, to any person obtaining a copy
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9 | 47d37dd9 | Juan Quintela | * of this software and associated documentation files (the "Software"), to deal
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10 | 47d37dd9 | Juan Quintela | * in the Software without restriction, including without limitation the rights
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11 | 47d37dd9 | Juan Quintela | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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12 | 47d37dd9 | Juan Quintela | * copies of the Software, and to permit persons to whom the Software is
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13 | 47d37dd9 | Juan Quintela | * furnished to do so, subject to the following conditions:
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14 | 47d37dd9 | Juan Quintela | *
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15 | 47d37dd9 | Juan Quintela | * The above copyright notice and this permission notice shall be included in
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16 | 47d37dd9 | Juan Quintela | * all copies or substantial portions of the Software.
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17 | 47d37dd9 | Juan Quintela | *
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18 | 47d37dd9 | Juan Quintela | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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19 | 47d37dd9 | Juan Quintela | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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20 | 47d37dd9 | Juan Quintela | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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21 | 47d37dd9 | Juan Quintela | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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22 | 47d37dd9 | Juan Quintela | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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23 | 47d37dd9 | Juan Quintela | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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24 | 47d37dd9 | Juan Quintela | * THE SOFTWARE.
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25 | 47d37dd9 | Juan Quintela | */
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26 | 83c9f4ca | Paolo Bonzini | #include "hw/hw.h" |
27 | 28ecbaee | Paolo Bonzini | #include "ui/console.h" |
28 | 83c9f4ca | Paolo Bonzini | #include "hw/pci/pci.h" |
29 | 47b43a1f | Paolo Bonzini | #include "vga_int.h" |
30 | 28ecbaee | Paolo Bonzini | #include "ui/pixel_ops.h" |
31 | 1de7afc9 | Paolo Bonzini | #include "qemu/timer.h" |
32 | 83c9f4ca | Paolo Bonzini | #include "hw/loader.h" |
33 | 47d37dd9 | Juan Quintela | |
34 | 803ff052 | Gerd Hoffmann | #define PCI_VGA_IOPORT_OFFSET 0x400 |
35 | 803ff052 | Gerd Hoffmann | #define PCI_VGA_IOPORT_SIZE (0x3e0 - 0x3c0) |
36 | 803ff052 | Gerd Hoffmann | #define PCI_VGA_BOCHS_OFFSET 0x500 |
37 | 803ff052 | Gerd Hoffmann | #define PCI_VGA_BOCHS_SIZE (0x0b * 2) |
38 | 803ff052 | Gerd Hoffmann | #define PCI_VGA_MMIO_SIZE 0x1000 |
39 | 803ff052 | Gerd Hoffmann | |
40 | 803ff052 | Gerd Hoffmann | enum vga_pci_flags {
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41 | 803ff052 | Gerd Hoffmann | PCI_VGA_FLAG_ENABLE_MMIO = 1,
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42 | 803ff052 | Gerd Hoffmann | }; |
43 | 803ff052 | Gerd Hoffmann | |
44 | 47d37dd9 | Juan Quintela | typedef struct PCIVGAState { |
45 | 47d37dd9 | Juan Quintela | PCIDevice dev; |
46 | 47d37dd9 | Juan Quintela | VGACommonState vga; |
47 | 803ff052 | Gerd Hoffmann | uint32_t flags; |
48 | 803ff052 | Gerd Hoffmann | MemoryRegion mmio; |
49 | 803ff052 | Gerd Hoffmann | MemoryRegion ioport; |
50 | 803ff052 | Gerd Hoffmann | MemoryRegion bochs; |
51 | 47d37dd9 | Juan Quintela | } PCIVGAState; |
52 | 47d37dd9 | Juan Quintela | |
53 | a4f9631c | Juan Quintela | static const VMStateDescription vmstate_vga_pci = { |
54 | a4f9631c | Juan Quintela | .name = "vga",
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55 | a4f9631c | Juan Quintela | .version_id = 2,
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56 | a4f9631c | Juan Quintela | .minimum_version_id = 2,
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57 | a4f9631c | Juan Quintela | .minimum_version_id_old = 2,
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58 | a4f9631c | Juan Quintela | .fields = (VMStateField []) { |
59 | a4f9631c | Juan Quintela | VMSTATE_PCI_DEVICE(dev, PCIVGAState), |
60 | a4f9631c | Juan Quintela | VMSTATE_STRUCT(vga, PCIVGAState, 0, vmstate_vga_common, VGACommonState),
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61 | a4f9631c | Juan Quintela | VMSTATE_END_OF_LIST() |
62 | 47d37dd9 | Juan Quintela | } |
63 | a4f9631c | Juan Quintela | }; |
64 | 47d37dd9 | Juan Quintela | |
65 | a8170e5e | Avi Kivity | static uint64_t pci_vga_ioport_read(void *ptr, hwaddr addr, |
66 | 803ff052 | Gerd Hoffmann | unsigned size)
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67 | 803ff052 | Gerd Hoffmann | { |
68 | 803ff052 | Gerd Hoffmann | PCIVGAState *d = ptr; |
69 | 803ff052 | Gerd Hoffmann | uint64_t ret = 0;
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70 | 803ff052 | Gerd Hoffmann | |
71 | 803ff052 | Gerd Hoffmann | switch (size) {
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72 | 803ff052 | Gerd Hoffmann | case 1: |
73 | 803ff052 | Gerd Hoffmann | ret = vga_ioport_read(&d->vga, addr); |
74 | 803ff052 | Gerd Hoffmann | break;
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75 | 803ff052 | Gerd Hoffmann | case 2: |
76 | 803ff052 | Gerd Hoffmann | ret = vga_ioport_read(&d->vga, addr); |
77 | 803ff052 | Gerd Hoffmann | ret |= vga_ioport_read(&d->vga, addr+1) << 8; |
78 | 803ff052 | Gerd Hoffmann | break;
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79 | 803ff052 | Gerd Hoffmann | } |
80 | 803ff052 | Gerd Hoffmann | return ret;
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81 | 803ff052 | Gerd Hoffmann | } |
82 | 803ff052 | Gerd Hoffmann | |
83 | a8170e5e | Avi Kivity | static void pci_vga_ioport_write(void *ptr, hwaddr addr, |
84 | 803ff052 | Gerd Hoffmann | uint64_t val, unsigned size)
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85 | 803ff052 | Gerd Hoffmann | { |
86 | 803ff052 | Gerd Hoffmann | PCIVGAState *d = ptr; |
87 | c96c53b5 | Gerd Hoffmann | |
88 | 803ff052 | Gerd Hoffmann | switch (size) {
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89 | 803ff052 | Gerd Hoffmann | case 1: |
90 | c96c53b5 | Gerd Hoffmann | vga_ioport_write(&d->vga, addr + 0x3c0, val);
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91 | 803ff052 | Gerd Hoffmann | break;
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92 | 803ff052 | Gerd Hoffmann | case 2: |
93 | 803ff052 | Gerd Hoffmann | /*
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94 | 803ff052 | Gerd Hoffmann | * Update bytes in little endian order. Allows to update
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95 | 803ff052 | Gerd Hoffmann | * indexed registers with a single word write because the
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96 | 803ff052 | Gerd Hoffmann | * index byte is updated first.
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97 | 803ff052 | Gerd Hoffmann | */
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98 | c96c53b5 | Gerd Hoffmann | vga_ioport_write(&d->vga, addr + 0x3c0, val & 0xff); |
99 | c96c53b5 | Gerd Hoffmann | vga_ioport_write(&d->vga, addr + 0x3c1, (val >> 8) & 0xff); |
100 | 803ff052 | Gerd Hoffmann | break;
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101 | 803ff052 | Gerd Hoffmann | } |
102 | 803ff052 | Gerd Hoffmann | } |
103 | 803ff052 | Gerd Hoffmann | |
104 | 803ff052 | Gerd Hoffmann | static const MemoryRegionOps pci_vga_ioport_ops = { |
105 | 803ff052 | Gerd Hoffmann | .read = pci_vga_ioport_read, |
106 | 803ff052 | Gerd Hoffmann | .write = pci_vga_ioport_write, |
107 | 803ff052 | Gerd Hoffmann | .valid.min_access_size = 1,
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108 | 803ff052 | Gerd Hoffmann | .valid.max_access_size = 4,
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109 | 803ff052 | Gerd Hoffmann | .impl.min_access_size = 1,
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110 | 803ff052 | Gerd Hoffmann | .impl.max_access_size = 2,
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111 | 803ff052 | Gerd Hoffmann | .endianness = DEVICE_LITTLE_ENDIAN, |
112 | 803ff052 | Gerd Hoffmann | }; |
113 | 803ff052 | Gerd Hoffmann | |
114 | a8170e5e | Avi Kivity | static uint64_t pci_vga_bochs_read(void *ptr, hwaddr addr, |
115 | 803ff052 | Gerd Hoffmann | unsigned size)
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116 | 803ff052 | Gerd Hoffmann | { |
117 | 803ff052 | Gerd Hoffmann | PCIVGAState *d = ptr; |
118 | 803ff052 | Gerd Hoffmann | int index = addr >> 1; |
119 | 803ff052 | Gerd Hoffmann | |
120 | 803ff052 | Gerd Hoffmann | vbe_ioport_write_index(&d->vga, 0, index);
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121 | 803ff052 | Gerd Hoffmann | return vbe_ioport_read_data(&d->vga, 0); |
122 | 803ff052 | Gerd Hoffmann | } |
123 | 803ff052 | Gerd Hoffmann | |
124 | a8170e5e | Avi Kivity | static void pci_vga_bochs_write(void *ptr, hwaddr addr, |
125 | 803ff052 | Gerd Hoffmann | uint64_t val, unsigned size)
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126 | 803ff052 | Gerd Hoffmann | { |
127 | 803ff052 | Gerd Hoffmann | PCIVGAState *d = ptr; |
128 | 803ff052 | Gerd Hoffmann | int index = addr >> 1; |
129 | 803ff052 | Gerd Hoffmann | |
130 | 803ff052 | Gerd Hoffmann | vbe_ioport_write_index(&d->vga, 0, index);
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131 | 803ff052 | Gerd Hoffmann | vbe_ioport_write_data(&d->vga, 0, val);
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132 | 803ff052 | Gerd Hoffmann | } |
133 | 803ff052 | Gerd Hoffmann | |
134 | 803ff052 | Gerd Hoffmann | static const MemoryRegionOps pci_vga_bochs_ops = { |
135 | 803ff052 | Gerd Hoffmann | .read = pci_vga_bochs_read, |
136 | 803ff052 | Gerd Hoffmann | .write = pci_vga_bochs_write, |
137 | 803ff052 | Gerd Hoffmann | .valid.min_access_size = 1,
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138 | 803ff052 | Gerd Hoffmann | .valid.max_access_size = 4,
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139 | 803ff052 | Gerd Hoffmann | .impl.min_access_size = 2,
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140 | 803ff052 | Gerd Hoffmann | .impl.max_access_size = 2,
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141 | 803ff052 | Gerd Hoffmann | .endianness = DEVICE_LITTLE_ENDIAN, |
142 | 803ff052 | Gerd Hoffmann | }; |
143 | 803ff052 | Gerd Hoffmann | |
144 | a1e47211 | Aurelien Jarno | static int pci_std_vga_initfn(PCIDevice *dev) |
145 | 47d37dd9 | Juan Quintela | { |
146 | 0d0302e2 | Gerd Hoffmann | PCIVGAState *d = DO_UPCAST(PCIVGAState, dev, dev); |
147 | 0d0302e2 | Gerd Hoffmann | VGACommonState *s = &d->vga; |
148 | 47d37dd9 | Juan Quintela | |
149 | 0d0302e2 | Gerd Hoffmann | /* vga + console init */
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150 | 0d0302e2 | Gerd Hoffmann | vga_common_init(s); |
151 | 0d0302e2 | Gerd Hoffmann | vga_init(s, pci_address_space(dev), pci_address_space_io(dev), true);
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152 | 47d37dd9 | Juan Quintela | |
153 | aa2beaa1 | Gerd Hoffmann | s->con = graphic_console_init(DEVICE(dev), s->hw_ops, s); |
154 | 47d37dd9 | Juan Quintela | |
155 | 0d0302e2 | Gerd Hoffmann | /* XXX: VGA_RAM_SIZE must be a power of two */
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156 | 0d0302e2 | Gerd Hoffmann | pci_register_bar(&d->dev, 0, PCI_BASE_ADDRESS_MEM_PREFETCH, &s->vram);
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157 | 47d37dd9 | Juan Quintela | |
158 | 803ff052 | Gerd Hoffmann | /* mmio bar for vga register access */
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159 | 803ff052 | Gerd Hoffmann | if (d->flags & (1 << PCI_VGA_FLAG_ENABLE_MMIO)) { |
160 | 2c9b15ca | Paolo Bonzini | memory_region_init(&d->mmio, NULL, "vga.mmio", 4096); |
161 | 2c9b15ca | Paolo Bonzini | memory_region_init_io(&d->ioport, NULL, &pci_vga_ioport_ops, d,
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162 | 803ff052 | Gerd Hoffmann | "vga ioports remapped", PCI_VGA_IOPORT_SIZE);
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163 | 2c9b15ca | Paolo Bonzini | memory_region_init_io(&d->bochs, NULL, &pci_vga_bochs_ops, d,
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164 | 803ff052 | Gerd Hoffmann | "bochs dispi interface", PCI_VGA_BOCHS_SIZE);
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165 | 803ff052 | Gerd Hoffmann | |
166 | 803ff052 | Gerd Hoffmann | memory_region_add_subregion(&d->mmio, PCI_VGA_IOPORT_OFFSET, |
167 | 803ff052 | Gerd Hoffmann | &d->ioport); |
168 | 803ff052 | Gerd Hoffmann | memory_region_add_subregion(&d->mmio, PCI_VGA_BOCHS_OFFSET, |
169 | 803ff052 | Gerd Hoffmann | &d->bochs); |
170 | 803ff052 | Gerd Hoffmann | pci_register_bar(&d->dev, 2, PCI_BASE_ADDRESS_SPACE_MEMORY, &d->mmio);
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171 | 803ff052 | Gerd Hoffmann | } |
172 | 803ff052 | Gerd Hoffmann | |
173 | 0d0302e2 | Gerd Hoffmann | if (!dev->rom_bar) {
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174 | 0d0302e2 | Gerd Hoffmann | /* compatibility with pc-0.13 and older */
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175 | 0d0302e2 | Gerd Hoffmann | vga_init_vbe(s, pci_address_space(dev)); |
176 | 0d0302e2 | Gerd Hoffmann | } |
177 | 281a26b1 | Gerd Hoffmann | |
178 | 0d0302e2 | Gerd Hoffmann | return 0; |
179 | 47d37dd9 | Juan Quintela | } |
180 | 47d37dd9 | Juan Quintela | |
181 | 4a1e244e | Gerd Hoffmann | static Property vga_pci_properties[] = {
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182 | 9e56edcf | Gerd Hoffmann | DEFINE_PROP_UINT32("vgamem_mb", PCIVGAState, vga.vram_size_mb, 16), |
183 | 803ff052 | Gerd Hoffmann | DEFINE_PROP_BIT("mmio", PCIVGAState, flags, PCI_VGA_FLAG_ENABLE_MMIO, true), |
184 | 4a1e244e | Gerd Hoffmann | DEFINE_PROP_END_OF_LIST(), |
185 | 4a1e244e | Gerd Hoffmann | }; |
186 | 4a1e244e | Gerd Hoffmann | |
187 | 40021f08 | Anthony Liguori | static void vga_class_init(ObjectClass *klass, void *data) |
188 | 40021f08 | Anthony Liguori | { |
189 | 39bffca2 | Anthony Liguori | DeviceClass *dc = DEVICE_CLASS(klass); |
190 | 40021f08 | Anthony Liguori | PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
191 | 40021f08 | Anthony Liguori | |
192 | 40021f08 | Anthony Liguori | k->no_hotplug = 1;
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193 | a1e47211 | Aurelien Jarno | k->init = pci_std_vga_initfn; |
194 | 40021f08 | Anthony Liguori | k->romfile = "vgabios-stdvga.bin";
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195 | 40021f08 | Anthony Liguori | k->vendor_id = PCI_VENDOR_ID_QEMU; |
196 | 40021f08 | Anthony Liguori | k->device_id = PCI_DEVICE_ID_QEMU_VGA; |
197 | 40021f08 | Anthony Liguori | k->class_id = PCI_CLASS_DISPLAY_VGA; |
198 | 39bffca2 | Anthony Liguori | dc->vmsd = &vmstate_vga_pci; |
199 | 4a1e244e | Gerd Hoffmann | dc->props = vga_pci_properties; |
200 | 40021f08 | Anthony Liguori | } |
201 | 32902772 | Isaku Yamahata | |
202 | 8c43a6f0 | Andreas Färber | static const TypeInfo vga_info = { |
203 | 39bffca2 | Anthony Liguori | .name = "VGA",
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204 | 39bffca2 | Anthony Liguori | .parent = TYPE_PCI_DEVICE, |
205 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(PCIVGAState),
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206 | 39bffca2 | Anthony Liguori | .class_init = vga_class_init, |
207 | 47d37dd9 | Juan Quintela | }; |
208 | 47d37dd9 | Juan Quintela | |
209 | 83f7d43a | Andreas Färber | static void vga_register_types(void) |
210 | 47d37dd9 | Juan Quintela | { |
211 | 39bffca2 | Anthony Liguori | type_register_static(&vga_info); |
212 | 47d37dd9 | Juan Quintela | } |
213 | 83f7d43a | Andreas Färber | |
214 | 83f7d43a | Andreas Färber | type_init(vga_register_types) |