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
  27#include "qemu/osdep.h"
  28#include "hw/hw.h"
  29#include "hw/isa/isa.h"
  30#include "vga_int.h"
  31#include "ui/pixel_ops.h"
  32#include "qemu/module.h"
  33#include "qemu/timer.h"
  34#include "hw/loader.h"
  35
  36#define TYPE_ISA_VGA "isa-vga"
  37#define ISA_VGA(obj) OBJECT_CHECK(ISAVGAState, (obj), TYPE_ISA_VGA)
  38
  39typedef struct ISAVGAState {
  40    ISADevice parent_obj;
  41
  42    struct VGACommonState state;
  43    PortioList portio_vga;
  44    PortioList portio_vbe;
  45} ISAVGAState;
  46
  47static void vga_isa_reset(DeviceState *dev)
  48{
  49    ISAVGAState *d = ISA_VGA(dev);
  50    VGACommonState *s = &d->state;
  51
  52    vga_common_reset(s);
  53}
  54
  55static void vga_isa_realizefn(DeviceState *dev, Error **errp)
  56{
  57    ISADevice *isadev = ISA_DEVICE(dev);
  58    ISAVGAState *d = ISA_VGA(dev);
  59    VGACommonState *s = &d->state;
  60    MemoryRegion *vga_io_memory;
  61    const MemoryRegionPortio *vga_ports, *vbe_ports;
  62
  63    s->global_vmstate = true;
  64    vga_common_init(s, OBJECT(dev));
  65    s->legacy_address_space = isa_address_space(isadev);
  66    vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports);
  67    isa_register_portio_list(isadev, &d->portio_vga,
  68                             0x3b0, vga_ports, s, "vga");
  69    if (vbe_ports) {
  70        isa_register_portio_list(isadev, &d->portio_vbe,
  71                                 0x1ce, vbe_ports, s, "vbe");
  72    }
  73    memory_region_add_subregion_overlap(isa_address_space(isadev),
  74                                        0x000a0000,
  75                                        vga_io_memory, 1);
  76    memory_region_set_coalescing(vga_io_memory);
  77    s->con = graphic_console_init(DEVICE(dev), 0, s->hw_ops, s);
  78
  79    vga_init_vbe(s, OBJECT(dev), isa_address_space(isadev));
  80    /* ROM BIOS */
  81    rom_add_vga(VGABIOS_FILENAME);
  82}
  83
  84static Property vga_isa_properties[] = {
  85    DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
  86    DEFINE_PROP_END_OF_LIST(),
  87};
  88
  89static void vga_isa_class_initfn(ObjectClass *klass, void *data)
  90{
  91    DeviceClass *dc = DEVICE_CLASS(klass);
  92
  93    dc->realize = vga_isa_realizefn;
  94    dc->reset = vga_isa_reset;
  95    dc->vmsd = &vmstate_vga_common;
  96    dc->props = vga_isa_properties;
  97    set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
  98}
  99
 100static const TypeInfo vga_isa_info = {
 101    .name          = TYPE_ISA_VGA,
 102    .parent        = TYPE_ISA_DEVICE,
 103    .instance_size = sizeof(ISAVGAState),
 104    .class_init    = vga_isa_class_initfn,
 105};
 106
 107static void vga_isa_register_types(void)
 108{
 109    type_register_static(&vga_isa_info);
 110}
 111
 112type_init(vga_isa_register_types)
 113