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 #include "qapi/error.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 /* 66 * make sure this device is not being added twice, if so 67 * exit without crashing qemu 68 */ 69 if (object_resolve_path_type("", TYPE_ISA_VGA, NULL)) { 70 error_setg(errp, "at most one %s device is permitted", TYPE_ISA_VGA); 71 return; 72 } 73 74 s->global_vmstate = true; 75 vga_common_init(s, OBJECT(dev)); 76 s->legacy_address_space = isa_address_space(isadev); 77 vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports); 78 isa_register_portio_list(isadev, &d->portio_vga, 79 0x3b0, vga_ports, s, "vga"); 80 if (vbe_ports) { 81 isa_register_portio_list(isadev, &d->portio_vbe, 82 0x1ce, vbe_ports, s, "vbe"); 83 } 84 memory_region_add_subregion_overlap(isa_address_space(isadev), 85 0x000a0000, 86 vga_io_memory, 1); 87 memory_region_set_coalescing(vga_io_memory); 88 s->con = graphic_console_init(dev, 0, s->hw_ops, s); 89 90 memory_region_add_subregion(isa_address_space(isadev), 91 VBE_DISPI_LFB_PHYSICAL_ADDRESS, 92 &s->vram); 93 /* ROM BIOS */ 94 rom_add_vga(VGABIOS_FILENAME); 95 } 96 97 static Property vga_isa_properties[] = { 98 DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8), 99 DEFINE_PROP_END_OF_LIST(), 100 }; 101 102 static void vga_isa_class_initfn(ObjectClass *klass, void *data) 103 { 104 DeviceClass *dc = DEVICE_CLASS(klass); 105 106 dc->realize = vga_isa_realizefn; 107 dc->reset = vga_isa_reset; 108 dc->vmsd = &vmstate_vga_common; 109 device_class_set_props(dc, vga_isa_properties); 110 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); 111 } 112 113 static const TypeInfo vga_isa_info = { 114 .name = TYPE_ISA_VGA, 115 .parent = TYPE_ISA_DEVICE, 116 .instance_size = sizeof(ISAVGAState), 117 .class_init = vga_isa_class_initfn, 118 }; 119 120 static void vga_isa_register_types(void) 121 { 122 type_register_static(&vga_isa_info); 123 } 124 125 type_init(vga_isa_register_types) 126