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/isa/isa.h"
  29#include "vga_int.h"
  30#include "ui/pixel_ops.h"
  31#include "qemu/module.h"
  32#include "qemu/timer.h"
  33#include "hw/loader.h"
  34#include "hw/qdev-properties.h"
  35#include "qom/object.h"
  36
  37#define TYPE_ISA_VGA "isa-vga"
  38OBJECT_DECLARE_SIMPLE_TYPE(ISAVGAState, ISA_VGA)
  39
  40struct ISAVGAState {
  41    ISADevice parent_obj;
  42
  43    struct VGACommonState state;
  44    PortioList portio_vga;
  45    PortioList portio_vbe;
  46};
  47
  48static void vga_isa_reset(DeviceState *dev)
  49{
  50    ISAVGAState *d = ISA_VGA(dev);
  51    VGACommonState *s = &d->state;
  52
  53    vga_common_reset(s);
  54}
  55
  56static void vga_isa_realizefn(DeviceState *dev, Error **errp)
  57{
  58    ISADevice *isadev = ISA_DEVICE(dev);
  59    ISAVGAState *d = ISA_VGA(dev);
  60    VGACommonState *s = &d->state;
  61    MemoryRegion *vga_io_memory;
  62    const MemoryRegionPortio *vga_ports, *vbe_ports;
  63
  64    s->global_vmstate = true;
  65    vga_common_init(s, OBJECT(dev));
  66    s->legacy_address_space = isa_address_space(isadev);
  67    vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports);
  68    isa_register_portio_list(isadev, &d->portio_vga,
  69                             0x3b0, vga_ports, s, "vga");
  70    if (vbe_ports) {
  71        isa_register_portio_list(isadev, &d->portio_vbe,
  72                                 0x1ce, vbe_ports, s, "vbe");
  73    }
  74    memory_region_add_subregion_overlap(isa_address_space(isadev),
  75                                        0x000a0000,
  76                                        vga_io_memory, 1);
  77    memory_region_set_coalescing(vga_io_memory);
  78    s->con = graphic_console_init(dev, 0, s->hw_ops, s);
  79
  80    memory_region_add_subregion(isa_address_space(isadev),
  81                                VBE_DISPI_LFB_PHYSICAL_ADDRESS,
  82                                &s->vram);
  83    /* ROM BIOS */
  84    rom_add_vga(VGABIOS_FILENAME);
  85}
  86
  87static Property vga_isa_properties[] = {
  88    DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
  89    DEFINE_PROP_END_OF_LIST(),
  90};
  91
  92static void vga_isa_class_initfn(ObjectClass *klass, void *data)
  93{
  94    DeviceClass *dc = DEVICE_CLASS(klass);
  95
  96    dc->realize = vga_isa_realizefn;
  97    dc->reset = vga_isa_reset;
  98    dc->vmsd = &vmstate_vga_common;
  99    device_class_set_props(dc, vga_isa_properties);
 100    set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
 101}
 102
 103static const TypeInfo vga_isa_info = {
 104    .name          = TYPE_ISA_VGA,
 105    .parent        = TYPE_ISA_DEVICE,
 106    .instance_size = sizeof(ISAVGAState),
 107    .class_init    = vga_isa_class_initfn,
 108};
 109
 110static void vga_isa_register_types(void)
 111{
 112    type_register_static(&vga_isa_info);
 113}
 114
 115type_init(vga_isa_register_types)
 116