LXR qemu/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#include "qemu/osdep.h"
  27#include "hw/hw.h"
  28#include "ui/console.h"
  29#include "hw/i386/pc.h"
  30#include "vga_int.h"
  31#include "ui/pixel_ops.h"
  32#include "qemu/timer.h"
  33#include "hw/loader.h"
  34
  35#define TYPE_ISA_VGA "isa-vga"
  36#define ISA_VGA(obj) OBJECT_CHECK(ISAVGAState, (obj), TYPE_ISA_VGA)
  37
  38typedef struct ISAVGAState {
  39    ISADevice parent_obj;
  40
  41    struct VGACommonState state;
  42} ISAVGAState;
  43
  44static void vga_isa_reset(DeviceState *dev)
  45{
  46    ISAVGAState *d = ISA_VGA(dev);
  47    VGACommonState *s = &d->state;
  48
  49    vga_common_reset(s);
  50}
  51
  52static void vga_isa_realizefn(DeviceState *dev, Error **errp)
  53{
  54    ISADevice *isadev = ISA_DEVICE(dev);
  55    ISAVGAState *d = ISA_VGA(dev);
  56    VGACommonState *s = &d->state;
  57    MemoryRegion *vga_io_memory;
  58    const MemoryRegionPortio *vga_ports, *vbe_ports;
  59
  60    vga_common_init(s, OBJECT(dev), true);
  61    s->legacy_address_space = isa_address_space(isadev);
  62    vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports);
  63    isa_register_portio_list(isadev, 0x3b0, vga_ports, s, "vga");
  64    if (vbe_ports) {
  65        isa_register_portio_list(isadev, 0x1ce, vbe_ports, s, "vbe");
  66    }
  67    memory_region_add_subregion_overlap(isa_address_space(isadev),
  68                                        0x000a0000,
  69                                        vga_io_memory, 1);
  70    memory_region_set_coalescing(vga_io_memory);
  71    s->con = graphic_console_init(DEVICE(dev), 0, s->hw_ops, s);
  72
  73    vga_init_vbe(s, OBJECT(dev), isa_address_space(isadev));
  74    /* ROM BIOS */
  75    rom_add_vga(VGABIOS_FILENAME);
  76}
  77
  78static Property vga_isa_properties[] = {
  79    DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
  80    DEFINE_PROP_END_OF_LIST(),
  81};
  82
  83static void vga_isa_class_initfn(ObjectClass *klass, void *data)
  84{
  85    DeviceClass *dc = DEVICE_CLASS(klass);
  86
  87    dc->realize = vga_isa_realizefn;
  88    dc->reset = vga_isa_reset;
  89    dc->vmsd = &vmstate_vga_common;
  90    dc->props = vga_isa_properties;
  91    set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
  92}
  93
  94static const TypeInfo vga_isa_info = {
  95    .name          = TYPE_ISA_VGA,
  96    .parent        = TYPE_ISA_DEVICE,
  97    .instance_size = sizeof(ISAVGAState),
  98    .class_init    = vga_isa_class_initfn,
  99};
 100
 101static void vga_isa_register_types(void)
 102{
 103    type_register_static(&vga_isa_info);
 104}
 105
 106type_init(vga_isa_register_types)
 107