2 * QEMU ISA VGA Emulator.
4 * see docs/specs/standard-vga.txt for virtual hardware specs.
6 * Copyright (c) 2003 Fabrice Bellard
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:
15 * The above copyright notice and this permission notice shall be included in
16 * all copies or substantial portions of the Software.
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
26 #include "qemu/osdep.h"
28 #include "hw/isa/isa.h"
30 #include "ui/pixel_ops.h"
31 #include "qemu/timer.h"
32 #include "hw/loader.h"
34 #define TYPE_ISA_VGA "isa-vga"
35 #define ISA_VGA(obj) OBJECT_CHECK(ISAVGAState, (obj), TYPE_ISA_VGA)
37 typedef struct ISAVGAState
{
40 struct VGACommonState state
;
41 PortioList portio_vga
;
42 PortioList portio_vbe
;
45 static void vga_isa_reset(DeviceState
*dev
)
47 ISAVGAState
*d
= ISA_VGA(dev
);
48 VGACommonState
*s
= &d
->state
;
53 static void vga_isa_realizefn(DeviceState
*dev
, Error
**errp
)
55 ISADevice
*isadev
= ISA_DEVICE(dev
);
56 ISAVGAState
*d
= ISA_VGA(dev
);
57 VGACommonState
*s
= &d
->state
;
58 MemoryRegion
*vga_io_memory
;
59 const MemoryRegionPortio
*vga_ports
, *vbe_ports
;
61 s
->global_vmstate
= true;
62 vga_common_init(s
, OBJECT(dev
));
63 s
->legacy_address_space
= isa_address_space(isadev
);
64 vga_io_memory
= vga_init_io(s
, OBJECT(dev
), &vga_ports
, &vbe_ports
);
65 isa_register_portio_list(isadev
, &d
->portio_vga
,
66 0x3b0, vga_ports
, s
, "vga");
68 isa_register_portio_list(isadev
, &d
->portio_vbe
,
69 0x1ce, vbe_ports
, s
, "vbe");
71 memory_region_add_subregion_overlap(isa_address_space(isadev
),
74 memory_region_set_coalescing(vga_io_memory
);
75 s
->con
= graphic_console_init(DEVICE(dev
), 0, s
->hw_ops
, s
);
77 vga_init_vbe(s
, OBJECT(dev
), isa_address_space(isadev
));
79 rom_add_vga(VGABIOS_FILENAME
);
82 static Property vga_isa_properties
[] = {
83 DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState
, state
.vram_size_mb
, 8),
84 DEFINE_PROP_END_OF_LIST(),
87 static void vga_isa_class_initfn(ObjectClass
*klass
, void *data
)
89 DeviceClass
*dc
= DEVICE_CLASS(klass
);
91 dc
->realize
= vga_isa_realizefn
;
92 dc
->reset
= vga_isa_reset
;
93 dc
->vmsd
= &vmstate_vga_common
;
94 dc
->props
= vga_isa_properties
;
95 set_bit(DEVICE_CATEGORY_DISPLAY
, dc
->categories
);
98 static const TypeInfo vga_isa_info
= {
100 .parent
= TYPE_ISA_DEVICE
,
101 .instance_size
= sizeof(ISAVGAState
),
102 .class_init
= vga_isa_class_initfn
,
105 static void vga_isa_register_types(void)
107 type_register_static(&vga_isa_info
);
110 type_init(vga_isa_register_types
)