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author | Daniel Baumann <mail@daniel-baumann.ch> | 2025-06-06 10:05:23 +0000 |
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committer | Daniel Baumann <mail@daniel-baumann.ch> | 2025-06-06 10:05:23 +0000 |
commit | 755cc582a2473d06f3a2131d506d0311cc70e9f9 (patch) | |
tree | 3efb1ddb8d57bbb4539ac0d229b384871c57820f /hw/display/vga-isa.c | |
parent | Initial commit. (diff) | |
download | qemu-upstream.tar.xz qemu-upstream.zip |
Adding upstream version 1:7.2+dfsg.upstream/1%7.2+dfsgupstream
Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
Diffstat (limited to 'hw/display/vga-isa.c')
-rw-r--r-- | hw/display/vga-isa.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/hw/display/vga-isa.c b/hw/display/vga-isa.c new file mode 100644 index 00000000..2a5437d8 --- /dev/null +++ b/hw/display/vga-isa.c @@ -0,0 +1,119 @@ +/* + * QEMU ISA VGA Emulator. + * + * see docs/specs/standard-vga.txt for virtual hardware specs. + * + * Copyright (c) 2003 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include "hw/isa/isa.h" +#include "vga_int.h" +#include "ui/pixel_ops.h" +#include "qemu/module.h" +#include "qemu/timer.h" +#include "hw/loader.h" +#include "hw/qdev-properties.h" +#include "ui/console.h" +#include "qom/object.h" + +#define TYPE_ISA_VGA "isa-vga" +OBJECT_DECLARE_SIMPLE_TYPE(ISAVGAState, ISA_VGA) + +struct ISAVGAState { + ISADevice parent_obj; + + struct VGACommonState state; + PortioList portio_vga; + PortioList portio_vbe; +}; + +static void vga_isa_reset(DeviceState *dev) +{ + ISAVGAState *d = ISA_VGA(dev); + VGACommonState *s = &d->state; + + vga_common_reset(s); +} + +static void vga_isa_realizefn(DeviceState *dev, Error **errp) +{ + ISADevice *isadev = ISA_DEVICE(dev); + ISAVGAState *d = ISA_VGA(dev); + VGACommonState *s = &d->state; + MemoryRegion *vga_io_memory; + const MemoryRegionPortio *vga_ports, *vbe_ports; + + s->global_vmstate = true; + if (!vga_common_init(s, OBJECT(dev), errp)) { + return; + } + + s->legacy_address_space = isa_address_space(isadev); + vga_io_memory = vga_init_io(s, OBJECT(dev), &vga_ports, &vbe_ports); + isa_register_portio_list(isadev, &d->portio_vga, + 0x3b0, vga_ports, s, "vga"); + if (vbe_ports) { + isa_register_portio_list(isadev, &d->portio_vbe, + 0x1ce, vbe_ports, s, "vbe"); + } + memory_region_add_subregion_overlap(isa_address_space(isadev), + 0x000a0000, + vga_io_memory, 1); + memory_region_set_coalescing(vga_io_memory); + s->con = graphic_console_init(dev, 0, s->hw_ops, s); + + memory_region_add_subregion(isa_address_space(isadev), + VBE_DISPI_LFB_PHYSICAL_ADDRESS, + &s->vram); + /* ROM BIOS */ + rom_add_vga(VGABIOS_FILENAME); +} + +static Property vga_isa_properties[] = { + DEFINE_PROP_UINT32("vgamem_mb", ISAVGAState, state.vram_size_mb, 8), + DEFINE_PROP_END_OF_LIST(), +}; + +static void vga_isa_class_initfn(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = vga_isa_realizefn; + dc->reset = vga_isa_reset; + dc->vmsd = &vmstate_vga_common; + device_class_set_props(dc, vga_isa_properties); + set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); +} + +static const TypeInfo vga_isa_info = { + .name = TYPE_ISA_VGA, + .parent = TYPE_ISA_DEVICE, + .instance_size = sizeof(ISAVGAState), + .class_init = vga_isa_class_initfn, +}; + +static void vga_isa_register_types(void) +{ + type_register_static(&vga_isa_info); +} + +type_init(vga_isa_register_types) |