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 "ui/console.h"
  36#include "qom/object.h"
  37
  38#define TYPE_ISA_VGA "isa-vga"
  39OBJECT_DECLARE_SIMPLE_TYPE(ISAVGAState, ISA_VGA)
  40
  41struct ISAVGAState {
  42    ISADevice parent_obj;
  43
  44    struct VGACommonState state;
  45    PortioList portio_vga;
  46    PortioList portio_vbe;
  47};
  48
  49static void vga_isa_reset(DeviceState *dev)
  50{
  51    ISAVGAState *d = ISA_VGA(dev);
  52    VGACommonState *s = &d->state;
  53
  54    vga_common_reset(s);
  55}
  56
  57static void vga_isa_realizefn(DeviceState *dev, Error **errp)
  58{
  59    ISADevice *isadev = ISA_DEVICE(dev);
  60    ISAVGAState *d = ISA_VGA(dev);
  61    VGACommonState *s = &d->state;
  62    MemoryRegion *vga_io_memory;
  63    const MemoryRegionPortio *vga_ports, *vbe_ports;
  64
  65    s->global_vmstate = true;
  66    if (!vga_common_init(s, OBJECT(dev), errp)) {
  67        return;
  68    }
  69
  70    s->legacy_address_space = isa_address_space(isadev);
  71    vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports);
  72    isa_register_portio_list(isadev, &d->portio_vga,
  73                             0x3b0, vga_ports, s, "vga");
  74    if (vbe_ports) {
  75        isa_register_portio_list(isadev, &d->portio_vbe,
  76                                 0x1ce, vbe_ports, s, "vbe");
  77    }
  78    memory_region_add_subregion_overlap(isa_address_space(isadev),
  79                                        0x000a0000,
  80                                        vga_io_memory, 1);
  81    memory_region_set_coalescing(vga_io_memory);
  82    s->con = graphic_console_init(dev, 0, s->hw_ops, s);
  83
  84    memory_region_add_subregion(isa_address_space(isadev),
  85                                VBE_DISPI_LFB_PHYSICAL_ADDRESS,
  86                                &s->vram);
  87    /* ROM BIOS */
  88    rom_add_vga(VGABIOS_FILENAME);
  89}
  90
  91static Property vga_isa_properties[] = {
  92    DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
  93    DEFINE_PROP_END_OF_LIST(),
  94};
  95
  96static void vga_isa_class_initfn(ObjectClass *klass, void *data)
  97{
  98    DeviceClass *dc = DEVICE_CLASS(klass);
  99
 100    dc->realize = vga_isa_realizefn;
 101    dc->reset = vga_isa_reset;
 102    dc->vmsd = &vmstate_vga_common;
 103    device_class_set_props(dc, vga_isa_properties);
 104    set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
 105}
 106
 107static const TypeInfo vga_isa_info = {
 108    .name          = TYPE_ISA_VGA,
 109    .parent        = TYPE_ISA_DEVICE,
 110    .instance_size = sizeof(ISAVGAState),
 111    .class_init    = vga_isa_class_initfn,
 112};
 113
 114static void vga_isa_register_types(void)
 115{
 116    type_register_static(&vga_isa_info);
 117}
 118
 119type_init(vga_isa_register_types)
 120