1/*
2 * QEMU ISA VGA Emulator.
3 *
4 * see docs/specs/standard-vga.txt for virtual hardware specs.
5 *
6 * Copyright (c) 2003 Fabrice Bellard
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a copy
9 * of this software and associated documentation files (the "Software"), to deal
10 * in the Software without restriction, including without limitation the rights
11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12 * copies of the Software, and to permit persons to whom the Software is
13 * furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 * THE SOFTWARE.
25 */
26
27#include "qemu/osdep.h"
28#include "hw/isa/isa.h"
29#include "vga_int.h"
30#include "ui/pixel_ops.h"
31#include "qemu/module.h"
32#include "qemu/timer.h"
33#include "hw/loader.h"
34#include "hw/qdev-properties.h"
35
36#define TYPE_ISA_VGA "isa-vga"
37#define ISA_VGA(obj) OBJECT_CHECK(ISAVGAState, (obj), TYPE_ISA_VGA)
38
39typedef struct ISAVGAState {
40 ISADevice parent_obj;
41
42 struct VGACommonState state;
43 PortioList portio_vga;
44 PortioList portio_vbe;
45} ISAVGAState;
46
47static void vga_isa_reset(DeviceState *dev)
48{
49 ISAVGAState *d = ISA_VGA(dev);
50 VGACommonState *s = &d->state;
51
52 vga_common_reset(s);
53}
54
55static void vga_isa_realizefn(DeviceState *dev, Error **errp)
56{
57 ISADevice *isadev = ISA_DEVICE(dev);
58 ISAVGAState *d = ISA_VGA(dev);
59 VGACommonState *s = &d->state;
60 MemoryRegion *vga_io_memory;
61 const MemoryRegionPortio *vga_ports, *vbe_ports;
62
63 s->global_vmstate = true;
64 vga_common_init(s, OBJECT(dev));
65 s->legacy_address_space = isa_address_space(isadev);
66 vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports);
67 isa_register_portio_list(isadev, &d->portio_vga,
68 0x3b0, vga_ports, s, "vga");
69 if (vbe_ports) {
70 isa_register_portio_list(isadev, &d->portio_vbe,
71 0x1ce, vbe_ports, s, "vbe");
72 }
73 memory_region_add_subregion_overlap(isa_address_space(isadev),
74 0x000a0000,
75 vga_io_memory, 1);
76 memory_region_set_coalescing(vga_io_memory);
77 s->con = graphic_console_init(DEVICE(dev), 0, s->hw_ops, s);
78
79 vga_init_vbe(s, OBJECT(dev), isa_address_space(isadev));
80 /* ROM BIOS */
81 rom_add_vga(VGABIOS_FILENAME);
82}
83
84static Property vga_isa_properties[] = {
85 DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
86 DEFINE_PROP_END_OF_LIST(),
87};
88
89static void vga_isa_class_initfn(ObjectClass *klass, void *data)
90{
91 DeviceClass *dc = DEVICE_CLASS(klass);
92
93 dc->realize = vga_isa_realizefn;
94 dc->reset = vga_isa_reset;
95 dc->vmsd = &vmstate_vga_common;
96 dc->props = vga_isa_properties;
97 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
98}
99
100static const TypeInfo vga_isa_info = {
101 .name = TYPE_ISA_VGA,
102 .parent = TYPE_ISA_DEVICE,
103 .instance_size = sizeof(ISAVGAState),
104 .class_init = vga_isa_class_initfn,
105};
106
107static void vga_isa_register_types(void)
108{
109 type_register_static(&vga_isa_info);
110}
111
112type_init(vga_isa_register_types)
113