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