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"
  39 OBJECT_DECLARE_SIMPLE_TYPE(ISAVGAState, ISA_VGA)
  40
  41 struct ISAVGAState {
  42     ISADevice parent_obj;
  43
  44     struct VGACommonState state;
  45     PortioList portio_vga;
  46     PortioList portio_vbe;
  47 };
  48
  49 static 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
  57 static 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
  91 static Property vga_isa_properties[] = {
  92     DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
  93     DEFINE_PROP_END_OF_LIST(),
  94 };
  95
  96 static 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
 107 static 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
 114 static void vga_isa_register_types(void)
 115 {
 116     type_register_static(&vga_isa_info);
 117 }
 118
 119 type_init(vga_isa_register_types)