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 "hw/isa/isa.h"
  29#include "vga_int.h"
  30#include "ui/pixel_ops.h"
  31#include "qemu/timer.h"
  32#include "hw/loader.h"
  33
  34#define TYPE_ISA_VGA "isa-vga"
  35#define ISA_VGA(obj) OBJECT_CHECK(ISAVGAState, (obj), TYPE_ISA_VGA)
  36
  37typedef struct ISAVGAState {
  38    ISADevice parent_obj;
  39
  40    struct VGACommonState state;
  41    PortioList portio_vga;
  42    PortioList portio_vbe;
  43} ISAVGAState;
  44
  45static void vga_isa_reset(DeviceState *dev)
  46{
  47    ISAVGAState *d = ISA_VGA(dev);
  48    VGACommonState *s = &d->state;
  49
  50    vga_common_reset(s);
  51}
  52
  53static void vga_isa_realizefn(DeviceState *dev, Error **errp)
  54{
  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;
  60
  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");
  67    if (vbe_ports) {
  68        isa_register_portio_list(isadev, &d->portio_vbe,
  69                                 0x1ce, vbe_ports, s, "vbe");
  70    }
  71    memory_region_add_subregion_overlap(isa_address_space(isadev),
  72                                        0x000a0000,
  73                                        vga_io_memory, 1);
  74    memory_region_set_coalescing(vga_io_memory);
  75    s->con = graphic_console_init(DEVICE(dev), 0, s->hw_ops, s);
  76
  77    vga_init_vbe(s, OBJECT(dev), isa_address_space(isadev));
  78    /* ROM BIOS */
  79    rom_add_vga(VGABIOS_FILENAME);
  80}
  81
  82static Property vga_isa_properties[] = {
  83    DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
  84    DEFINE_PROP_END_OF_LIST(),
  85};
  86
  87static void vga_isa_class_initfn(ObjectClass *klass, void *data)
  88{
  89    DeviceClass *dc = DEVICE_CLASS(klass);
  90
  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);
  96}
  97
  98static const TypeInfo vga_isa_info = {
  99    .name          = TYPE_ISA_VGA,
 100    .parent        = TYPE_ISA_DEVICE,
 101    .instance_size = sizeof(ISAVGAState),
 102    .class_init    = vga_isa_class_initfn,
 103};
 104
 105static void vga_isa_register_types(void)
 106{
 107    type_register_static(&vga_isa_info);
 108}
 109
 110type_init(vga_isa_register_types)
 111