mirror of https://gitee.com/openkylin/qemu.git
123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/*
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* QEMU PCI VGA Emulator.
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h"
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#include "console.h"
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#include "pc.h"
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#include "pci.h"
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#include "vga_int.h"
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#include "pixel_ops.h"
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#include "qemu-timer.h"
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#include "loader.h"
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typedef struct PCIVGAState {
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PCIDevice dev;
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VGACommonState vga;
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} PCIVGAState;
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static const VMStateDescription vmstate_vga_pci = {
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.name = "vga",
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.version_id = 2,
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.minimum_version_id = 2,
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.minimum_version_id_old = 2,
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.fields = (VMStateField []) {
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VMSTATE_PCI_DEVICE(dev, PCIVGAState),
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VMSTATE_STRUCT(vga, PCIVGAState, 0, vmstate_vga_common, VGACommonState),
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VMSTATE_END_OF_LIST()
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}
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};
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static void vga_map(PCIDevice *pci_dev, int region_num,
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pcibus_t addr, pcibus_t size, int type)
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{
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PCIVGAState *d = (PCIVGAState *)pci_dev;
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VGACommonState *s = &d->vga;
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cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
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s->map_addr = addr;
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s->map_end = addr + s->vram_size;
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vga_dirty_log_start(s);
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}
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static void pci_vga_write_config(PCIDevice *d,
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uint32_t address, uint32_t val, int len)
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{
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PCIVGAState *pvs = container_of(d, PCIVGAState, dev);
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VGACommonState *s = &pvs->vga;
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pci_default_write_config(d, address, val, len);
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if (s->map_addr && pvs->dev.io_regions[0].addr == -1)
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s->map_addr = 0;
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}
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static int pci_vga_initfn(PCIDevice *dev)
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{
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PCIVGAState *d = DO_UPCAST(PCIVGAState, dev, dev);
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VGACommonState *s = &d->vga;
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// vga + console init
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vga_common_init(s, VGA_RAM_SIZE);
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vga_init(s);
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s->ds = graphic_console_init(s->update, s->invalidate,
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s->screen_dump, s->text_update, s);
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/* XXX: VGA_RAM_SIZE must be a power of two */
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pci_register_bar(&d->dev, 0, VGA_RAM_SIZE,
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PCI_BASE_ADDRESS_MEM_PREFETCH, vga_map);
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if (!dev->rom_bar) {
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/* compatibility with pc-0.13 and older */
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vga_init_vbe(s);
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}
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return 0;
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}
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int pci_vga_init(PCIBus *bus)
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{
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pci_create_simple(bus, -1, "VGA");
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return 0;
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}
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static PCIDeviceInfo vga_info = {
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.qdev.name = "VGA",
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.qdev.size = sizeof(PCIVGAState),
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.qdev.vmsd = &vmstate_vga_pci,
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.no_hotplug = 1,
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.init = pci_vga_initfn,
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.config_write = pci_vga_write_config,
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.romfile = "vgabios-stdvga.bin",
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/* dummy VGA (same as Bochs ID) */
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.vendor_id = PCI_VENDOR_ID_QEMU,
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.device_id = PCI_DEVICE_ID_QEMU_VGA,
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.class_id = PCI_CLASS_DISPLAY_VGA,
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};
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static void vga_register(void)
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{
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pci_qdev_register(&vga_info);
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}
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device_init(vga_register);
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