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"
32 typedef struct PCIVGAState
{
37 static void pci_vga_save(QEMUFile
*f
, void *opaque
)
39 PCIVGAState
*s
= opaque
;
41 pci_device_save(&s
->dev
, f
);
42 vga_common_save(f
, &s
->vga
);
45 static int pci_vga_load(QEMUFile
*f
, void *opaque
, int version_id
)
47 PCIVGAState
*s
= opaque
;
53 if (version_id
>= 2) {
54 ret
= pci_device_load(&s
->dev
, f
);
58 return vga_common_load(f
, &s
->vga
, version_id
);
61 static void vga_map(PCIDevice
*pci_dev
, int region_num
,
62 uint32_t addr
, uint32_t size
, int type
)
64 PCIVGAState
*d
= (PCIVGAState
*)pci_dev
;
65 VGACommonState
*s
= &d
->vga
;
66 if (region_num
== PCI_ROM_SLOT
) {
67 cpu_register_physical_memory(addr
, s
->bios_size
, s
->bios_offset
);
69 cpu_register_physical_memory(addr
, s
->vram_size
, s
->vram_offset
);
71 s
->map_end
= addr
+ s
->vram_size
;
72 vga_dirty_log_start(s
);
76 static void pci_vga_write_config(PCIDevice
*d
,
77 uint32_t address
, uint32_t val
, int len
)
79 PCIVGAState
*pvs
= container_of(d
, PCIVGAState
, dev
);
80 VGACommonState
*s
= &pvs
->vga
;
82 pci_default_write_config(d
, address
, val
, len
);
83 if (s
->map_addr
&& pvs
->dev
.io_regions
[0].addr
== -1)
87 static int pci_vga_initfn(PCIDevice
*dev
)
89 PCIVGAState
*d
= DO_UPCAST(PCIVGAState
, dev
, dev
);
90 VGACommonState
*s
= &d
->vga
;
91 uint8_t *pci_conf
= d
->dev
.config
;
94 vga_common_init(s
, VGA_RAM_SIZE
);
96 register_savevm("vga", 0, 2, pci_vga_save
, pci_vga_load
, d
);
98 s
->ds
= graphic_console_init(s
->update
, s
->invalidate
,
99 s
->screen_dump
, s
->text_update
, s
);
101 // dummy VGA (same as Bochs ID)
102 pci_config_set_vendor_id(pci_conf
, PCI_VENDOR_ID_QEMU
);
103 pci_config_set_device_id(pci_conf
, PCI_DEVICE_ID_QEMU_VGA
);
104 pci_config_set_class(pci_conf
, PCI_CLASS_DISPLAY_VGA
);
105 pci_conf
[PCI_HEADER_TYPE
] = PCI_HEADER_TYPE_NORMAL
; // header_type
107 /* XXX: VGA_RAM_SIZE must be a power of two */
108 pci_register_bar(&d
->dev
, 0, VGA_RAM_SIZE
,
109 PCI_ADDRESS_SPACE_MEM_PREFETCH
, vga_map
);
112 unsigned int bios_total_size
;
113 /* must be a power of two */
115 while (bios_total_size
< s
->bios_size
)
116 bios_total_size
<<= 1;
117 pci_register_bar(&d
->dev
, PCI_ROM_SLOT
, bios_total_size
,
118 PCI_ADDRESS_SPACE_MEM_PREFETCH
, vga_map
);
123 int pci_vga_init(PCIBus
*bus
,
124 unsigned long vga_bios_offset
, int vga_bios_size
)
128 dev
= pci_create_noinit(bus
, -1, "VGA");
129 qdev_prop_set_uint32(&dev
->qdev
, "bios-offset", vga_bios_offset
);
130 qdev_prop_set_uint32(&dev
->qdev
, "bios-size", vga_bios_offset
);
131 qdev_init(&dev
->qdev
);
136 static PCIDeviceInfo vga_info
= {
138 .qdev
.size
= sizeof(PCIVGAState
),
139 .init
= pci_vga_initfn
,
140 .config_write
= pci_vga_write_config
,
141 .qdev
.props
= (Property
[]) {
142 DEFINE_PROP_HEX32("bios-offset", PCIVGAState
, vga
.bios_offset
, 0),
143 DEFINE_PROP_HEX32("bios-size", PCIVGAState
, vga
.bios_size
, 0),
144 DEFINE_PROP_END_OF_LIST(),
148 static void vga_register(void)
150 pci_qdev_register(&vga_info
);
152 device_init(vga_register
);