hw/vga-isa.c

   1 /*
   2  * QEMU ISA VGA Emulator.
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "hw.h"
  25 #include "console.h"
  26 #include "pc.h"
  27 #include "vga_int.h"
  28 #include "pixel_ops.h"
  29 #include "qemu-timer.h"
  30 #include "loader.h"
  31
  32 typedef struct ISAVGAState {
  33     ISADevice dev;
  34     struct VGACommonState state;
  35 } ISAVGAState;
  36
  37 static void vga_reset_isa(DeviceState *dev)
  38 {
  39     ISAVGAState *d = container_of(dev, ISAVGAState, dev.qdev);
  40     VGACommonState *s = &d->state;
  41
  42     vga_common_reset(s);
  43 }
  44
  45 static int vga_initfn(ISADevice *dev)
  46 {
  47     ISAVGAState *d = DO_UPCAST(ISAVGAState, dev, dev);
  48     VGACommonState *s = &d->state;
  49     MemoryRegion *vga_io_memory;
  50     const MemoryRegionPortio *vga_ports, *vbe_ports;
  51
  52     vga_common_init(s, VGA_RAM_SIZE);
  53     s->legacy_address_space = isa_address_space(dev);
  54     vga_io_memory = vga_init_io(s, &vga_ports, &vbe_ports);
  55     isa_register_portio_list(dev, 0x3b0, vga_ports, s, "vga");
  56     if (vbe_ports) {
  57         isa_register_portio_list(dev, 0x1ce, vbe_ports, s, "vbe");
  58     }
  59     memory_region_add_subregion_overlap(isa_address_space(dev),
  60                                         isa_mem_base + 0x000a0000,
  61                                         vga_io_memory, 1);
  62     memory_region_set_coalescing(vga_io_memory);
  63     s->ds = graphic_console_init(s->update, s->invalidate,
  64                                  s->screen_dump, s->text_update, s);
  65
  66     vga_init_vbe(s, isa_address_space(dev));
  67     /* ROM BIOS */
  68     rom_add_vga(VGABIOS_FILENAME);
  69     return 0;
  70 }
  71
  72 static void vga_class_initfn(ObjectClass *klass, void *data)
  73 {
  74     DeviceClass *dc = DEVICE_CLASS(klass);
  75     ISADeviceClass *ic = ISA_DEVICE_CLASS(klass);
  76     ic->init = vga_initfn;
  77     dc->reset = vga_reset_isa;
  78     dc->vmsd = &vmstate_vga_common;
  79 }
  80
  81 static TypeInfo vga_info = {
  82     .name          = "isa-vga",
  83     .parent        = TYPE_ISA_DEVICE,
  84     .instance_size = sizeof(ISAVGAState),
  85     .class_init    = vga_class_initfn,
  86 };
  87
  88 static void vga_register_types(void)
  89 {
  90     type_register_static(&vga_info);
  91 }
  92
  93 type_init(vga_register_types)