2 * QEMU PCI VGA Emulator.
4 * Copyright (c) 2003 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29 #include "pixel_ops.h"
30 #include "qemu-timer.h"
33 typedef struct PCIVGAState {
38 static const VMStateDescription vmstate_vga_pci = {
41 .minimum_version_id = 2,
42 .minimum_version_id_old = 2,
43 .fields = (VMStateField []) {
44 VMSTATE_PCI_DEVICE(dev, PCIVGAState),
45 VMSTATE_STRUCT(vga, PCIVGAState, 0, vmstate_vga_common, VGACommonState),
50 static void vga_map(PCIDevice *pci_dev, int region_num,
51 pcibus_t addr, pcibus_t size, int type)
53 PCIVGAState *d = (PCIVGAState *)pci_dev;
54 VGACommonState *s = &d->vga;
56 cpu_register_physical_memory(addr, s->vram_size, s->vram_offset);
58 s->map_end = addr + s->vram_size;
59 vga_dirty_log_start(s);
62 static void pci_vga_write_config(PCIDevice *d,
63 uint32_t address, uint32_t val, int len)
65 PCIVGAState *pvs = container_of(d, PCIVGAState, dev);
66 VGACommonState *s = &pvs->vga;
68 pci_default_write_config(d, address, val, len);
69 if (s->map_addr && pvs->dev.io_regions[0].addr == -1)
73 static int pci_vga_initfn(PCIDevice *dev)
75 PCIVGAState *d = DO_UPCAST(PCIVGAState, dev, dev);
76 VGACommonState *s = &d->vga;
77 uint8_t *pci_conf = d->dev.config;
80 vga_common_init(s, VGA_RAM_SIZE);
83 s->ds = graphic_console_init(s->update, s->invalidate,
84 s->screen_dump, s->text_update, s);
86 // dummy VGA (same as Bochs ID)
87 pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_QEMU);
88 pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_QEMU_VGA);
89 pci_config_set_class(pci_conf, PCI_CLASS_DISPLAY_VGA);
91 /* XXX: VGA_RAM_SIZE must be a power of two */
92 pci_register_bar(&d->dev, 0, VGA_RAM_SIZE,
93 PCI_BASE_ADDRESS_MEM_PREFETCH, vga_map);
96 /* compatibility with pc-0.13 and older */
103 int pci_vga_init(PCIBus *bus)
105 pci_create_simple(bus, -1, "VGA");
109 static PCIDeviceInfo vga_info = {
111 .qdev.size = sizeof(PCIVGAState),
112 .qdev.vmsd = &vmstate_vga_pci,
114 .init = pci_vga_initfn,
115 .config_write = pci_vga_write_config,
116 .romfile = "vgabios-stdvga.bin",
119 static void vga_register(void)
121 pci_qdev_register(&vga_info);
123 device_init(vga_register);