hw/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 "hw.h"
  27 #include "ui/console.h"
  28 #include "pc.h"
  29 #include "vga_int.h"
  30 #include "ui/pixel_ops.h"
  31 #include "qemu/timer.h"
  32 #include "loader.h"
  33
  34 typedef struct ISAVGAState {
  35     ISADevice dev;
  36     struct VGACommonState state;
  37 } ISAVGAState;
  38
  39 static void vga_reset_isa(DeviceState *dev)
  40 {
  41     ISAVGAState *d = container_of(dev, ISAVGAState, dev.qdev);
  42     VGACommonState *s = &d->state;
  43
  44     vga_common_reset(s);
  45 }
  46
  47 static int vga_initfn(ISADevice *dev)
  48 {
  49     ISAVGAState *d = DO_UPCAST(ISAVGAState, dev, dev);
  50     VGACommonState *s = &d->state;
  51     MemoryRegion *vga_io_memory;
  52     const MemoryRegionPortio *vga_ports, *vbe_ports;
  53
  54     vga_common_init(s);
  55     s->legacy_address_space = isa_address_space(dev);
  56     vga_io_memory = vga_init_io(s, &vga_ports, &vbe_ports);
  57     isa_register_portio_list(dev, 0x3b0, vga_ports, s, "vga");
  58     if (vbe_ports) {
  59         isa_register_portio_list(dev, 0x1ce, vbe_ports, s, "vbe");
  60     }
  61     memory_region_add_subregion_overlap(isa_address_space(dev),
  62                                         isa_mem_base + 0x000a0000,
  63                                         vga_io_memory, 1);
  64     memory_region_set_coalescing(vga_io_memory);
  65     s->ds = graphic_console_init(s->update, s->invalidate,
  66                                  s->screen_dump, s->text_update, s);
  67
  68     vga_init_vbe(s, isa_address_space(dev));
  69     /* ROM BIOS */
  70     rom_add_vga(VGABIOS_FILENAME);
  71     return 0;
  72 }
  73
  74 static Property vga_isa_properties[] = {
  75     DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8),
  76     DEFINE_PROP_END_OF_LIST(),
  77 };
  78
  79 static void vga_class_initfn(ObjectClass *klass, void *data)
  80 {
  81     DeviceClass *dc = DEVICE_CLASS(klass);
  82     ISADeviceClass *ic = ISA_DEVICE_CLASS(klass);
  83     ic->init = vga_initfn;
  84     dc->reset = vga_reset_isa;
  85     dc->vmsd = &vmstate_vga_common;
  86     dc->props = vga_isa_properties;
  87 }
  88
  89 static const TypeInfo vga_info = {
  90     .name          = "isa-vga",
  91     .parent        = TYPE_ISA_DEVICE,
  92     .instance_size = sizeof(ISAVGAState),
  93     .class_init    = vga_class_initfn,
  94 };
  95
  96 static void vga_register_types(void)
  97 {
  98     type_register_static(&vga_info);
  99 }
 100
 101 type_init(vga_register_types)