mirror of https://gitee.com/openkylin/qemu.git
102 lines
3.3 KiB
C
102 lines
3.3 KiB
C
/*
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* QEMU ISA VGA Emulator.
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*
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* see docs/specs/standard-vga.txt for virtual hardware specs.
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h"
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#include "ui/console.h"
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#include "pc.h"
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#include "vga_int.h"
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#include "ui/pixel_ops.h"
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#include "qemu/timer.h"
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#include "loader.h"
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typedef struct ISAVGAState {
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ISADevice dev;
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struct VGACommonState state;
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} ISAVGAState;
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static void vga_reset_isa(DeviceState *dev)
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{
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ISAVGAState *d = container_of(dev, ISAVGAState, dev.qdev);
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VGACommonState *s = &d->state;
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vga_common_reset(s);
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}
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static int vga_initfn(ISADevice *dev)
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{
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ISAVGAState *d = DO_UPCAST(ISAVGAState, dev, dev);
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VGACommonState *s = &d->state;
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MemoryRegion *vga_io_memory;
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const MemoryRegionPortio *vga_ports, *vbe_ports;
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vga_common_init(s);
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s->legacy_address_space = isa_address_space(dev);
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vga_io_memory = vga_init_io(s, &vga_ports, &vbe_ports);
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isa_register_portio_list(dev, 0x3b0, vga_ports, s, "vga");
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if (vbe_ports) {
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isa_register_portio_list(dev, 0x1ce, vbe_ports, s, "vbe");
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}
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memory_region_add_subregion_overlap(isa_address_space(dev),
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isa_mem_base + 0x000a0000,
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vga_io_memory, 1);
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memory_region_set_coalescing(vga_io_memory);
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s->ds = graphic_console_init(s->update, s->invalidate,
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s->screen_dump, s->text_update, s);
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vga_init_vbe(s, isa_address_space(dev));
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/* ROM BIOS */
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rom_add_vga(VGABIOS_FILENAME);
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return 0;
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}
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static Property vga_isa_properties[] = {
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DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void vga_class_initfn(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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ISADeviceClass *ic = ISA_DEVICE_CLASS(klass);
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ic->init = vga_initfn;
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dc->reset = vga_reset_isa;
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dc->vmsd = &vmstate_vga_common;
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dc->props = vga_isa_properties;
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}
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static const TypeInfo vga_info = {
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.name = "isa-vga",
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.parent = TYPE_ISA_DEVICE,
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.instance_size = sizeof(ISAVGAState),
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.class_init = vga_class_initfn,
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};
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static void vga_register_types(void)
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{
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type_register_static(&vga_info);
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}
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type_init(vga_register_types)
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