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 "qemu/osdep.h" 27 #include "hw/hw.h" 28 #include "hw/isa/isa.h" 29 #include "vga_int.h" 30 #include "ui/pixel_ops.h" 31 #include "qemu/timer.h" 32 #include "hw/loader.h" 33 34 #define TYPE_ISA_VGA "isa-vga" 35 #define ISA_VGA(obj) OBJECT_CHECK(ISAVGAState, (obj), TYPE_ISA_VGA) 36 37 typedef struct ISAVGAState { 38 ISADevice parent_obj; 39 40 struct VGACommonState state; 41 PortioList portio_vga; 42 PortioList portio_vbe; 43 } ISAVGAState; 44 45 static void vga_isa_reset(DeviceState *dev) 46 { 47 ISAVGAState *d = ISA_VGA(dev); 48 VGACommonState *s = &d->state; 49 50 vga_common_reset(s); 51 } 52 53 static void vga_isa_realizefn(DeviceState *dev, Error **errp) 54 { 55 ISADevice *isadev = ISA_DEVICE(dev); 56 ISAVGAState *d = ISA_VGA(dev); 57 VGACommonState *s = &d->state; 58 MemoryRegion *vga_io_memory; 59 const MemoryRegionPortio *vga_ports, *vbe_ports; 60 61 s->global_vmstate = true; 62 vga_common_init(s, OBJECT(dev)); 63 s->legacy_address_space = isa_address_space(isadev); 64 vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports); 65 isa_register_portio_list(isadev, &d->portio_vga, 66 0x3b0, vga_ports, s, "vga"); 67 if (vbe_ports) { 68 isa_register_portio_list(isadev, &d->portio_vbe, 69 0x1ce, vbe_ports, s, "vbe"); 70 } 71 memory_region_add_subregion_overlap(isa_address_space(isadev), 72 0x000a0000, 73 vga_io_memory, 1); 74 memory_region_set_coalescing(vga_io_memory); 75 s->con = graphic_console_init(DEVICE(dev), 0, s->hw_ops, s); 76 77 vga_init_vbe(s, OBJECT(dev), isa_address_space(isadev)); 78 /* ROM BIOS */ 79 rom_add_vga(VGABIOS_FILENAME); 80 } 81 82 static Property vga_isa_properties[] = { 83 DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8), 84 DEFINE_PROP_END_OF_LIST(), 85 }; 86 87 static void vga_isa_class_initfn(ObjectClass *klass, void *data) 88 { 89 DeviceClass *dc = DEVICE_CLASS(klass); 90 91 dc->realize = vga_isa_realizefn; 92 dc->reset = vga_isa_reset; 93 dc->vmsd = &vmstate_vga_common; 94 dc->props = vga_isa_properties; 95 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); 96 } 97 98 static const TypeInfo vga_isa_info = { 99 .name = TYPE_ISA_VGA, 100 .parent = TYPE_ISA_DEVICE, 101 .instance_size = sizeof(ISAVGAState), 102 .class_init = vga_isa_class_initfn, 103 }; 104 105 static void vga_isa_register_types(void) 106 { 107 type_register_static(&vga_isa_info); 108 } 109 110 type_init(vga_isa_register_types) 111