Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging
[qemu.git] / hw / display / vga-isa.c
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 #include "qom/object.h"
36 #include "qapi/error.h"
37
38 #define TYPE_ISA_VGA "isa-vga"
39 OBJECT_DECLARE_SIMPLE_TYPE(ISAVGAState, ISA_VGA)
40
41 struct ISAVGAState {
42 ISADevice parent_obj;
43
44 struct VGACommonState state;
45 PortioList portio_vga;
46 PortioList portio_vbe;
47 };
48
49 static void vga_isa_reset(DeviceState *dev)
50 {
51 ISAVGAState *d = ISA_VGA(dev);
52 VGACommonState *s = &d->state;
53
54 vga_common_reset(s);
55 }
56
57 static void vga_isa_realizefn(DeviceState *dev, Error **errp)
58 {
59 ISADevice *isadev = ISA_DEVICE(dev);
60 ISAVGAState *d = ISA_VGA(dev);
61 VGACommonState *s = &d->state;
62 MemoryRegion *vga_io_memory;
63 const MemoryRegionPortio *vga_ports, *vbe_ports;
64
65 /*
66 * make sure this device is not being added twice, if so
67 * exit without crashing qemu
68 */
69 if (object_resolve_path_type("", TYPE_ISA_VGA, NULL)) {
70 error_setg(errp, "at most one %s device is permitted", TYPE_ISA_VGA);
71 return;
72 }
73
74 s->global_vmstate = true;
75 vga_common_init(s, OBJECT(dev));
76 s->legacy_address_space = isa_address_space(isadev);
77 vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports);
78 isa_register_portio_list(isadev, &d->portio_vga,
79 0x3b0, vga_ports, s, "vga");
80 if (vbe_ports) {
81 isa_register_portio_list(isadev, &d->portio_vbe,
82 0x1ce, vbe_ports, s, "vbe");
83 }
84 memory_region_add_subregion_overlap(isa_address_space(isadev),
85 0x000a0000,
86 vga_io_memory, 1);
87 memory_region_set_coalescing(vga_io_memory);
88 s->con = graphic_console_init(dev, 0, s->hw_ops, s);
89
90 memory_region_add_subregion(isa_address_space(isadev),
91 VBE_DISPI_LFB_PHYSICAL_ADDRESS,
92 &s->vram);
93 /* ROM BIOS */
94 rom_add_vga(VGABIOS_FILENAME);
95 }
96
97 static Property vga_isa_properties[] = {
98 DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
99 DEFINE_PROP_END_OF_LIST(),
100 };
101
102 static void vga_isa_class_initfn(ObjectClass *klass, void *data)
103 {
104 DeviceClass *dc = DEVICE_CLASS(klass);
105
106 dc->realize = vga_isa_realizefn;
107 dc->reset = vga_isa_reset;
108 dc->vmsd = &vmstate_vga_common;
109 device_class_set_props(dc, vga_isa_properties);
110 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
111 }
112
113 static const TypeInfo vga_isa_info = {
114 .name = TYPE_ISA_VGA,
115 .parent = TYPE_ISA_DEVICE,
116 .instance_size = sizeof(ISAVGAState),
117 .class_init = vga_isa_class_initfn,
118 };
119
120 static void vga_isa_register_types(void)
121 {
122 type_register_static(&vga_isa_info);
123 }
124
125 type_init(vga_isa_register_types)