1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/pci/pci.h"
#include "vga_int.h"
#include "hw/virtio/virtio-pci.h"
#include "qapi/error.h"
/*
* virtio-vga: This extends VirtioPCIProxy.
*/
#define TYPE_VIRTIO_VGA "virtio-vga"
#define VIRTIO_VGA(obj) \
OBJECT_CHECK(VirtIOVGA, (obj), TYPE_VIRTIO_VGA)
typedef struct VirtIOVGA {
VirtIOPCIProxy parent_obj;
VirtIOGPU vdev;
VGACommonState vga;
MemoryRegion vga_mrs[3];
} VirtIOVGA;
static void virtio_vga_invalidate_display(void *opaque)
{
VirtIOVGA *vvga = opaque;
if (vvga->vdev.enable) {
virtio_gpu_ops.invalidate(&vvga->vdev);
} else {
vvga->vga.hw_ops->invalidate(&vvga->vga);
}
}
static void virtio_vga_update_display(void *opaque)
{
VirtIOVGA *vvga = opaque;
if (vvga->vdev.enable) {
virtio_gpu_ops.gfx_update(&vvga->vdev);
} else {
vvga->vga.hw_ops->gfx_update(&vvga->vga);
}
}
static void virtio_vga_text_update(void *opaque, console_ch_t *chardata)
{
VirtIOVGA *vvga = opaque;
if (vvga->vdev.enable) {
if (virtio_gpu_ops.text_update) {
virtio_gpu_ops.text_update(&vvga->vdev, chardata);
}
} else {
if (vvga->vga.hw_ops->text_update) {
vvga->vga.hw_ops->text_update(&vvga->vga, chardata);
}
}
}
static int virtio_vga_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
{
VirtIOVGA *vvga = opaque;
if (virtio_gpu_ops.ui_info) {
return virtio_gpu_ops.ui_info(&vvga->vdev, idx, info);
}
return -1;
}
static void virtio_vga_gl_block(void *opaque, bool block)
{
VirtIOVGA *vvga = opaque;
if (virtio_gpu_ops.gl_block) {
virtio_gpu_ops.gl_block(&vvga->vdev, block);
}
}
static void virtio_vga_disable_scanout(VirtIOGPU *g, int scanout_id)
{
VirtIOVGA *vvga = container_of(g, VirtIOVGA, vdev);
if (scanout_id == 0) {
/* reset surface if needed */
vvga->vga.graphic_mode = -1;
}
}
static const GraphicHwOps virtio_vga_ops = {
.invalidate = virtio_vga_invalidate_display,
.gfx_update = virtio_vga_update_display,
.text_update = virtio_vga_text_update,
.ui_info = virtio_vga_ui_info,
.gl_block = virtio_vga_gl_block,
};
static const VMStateDescription vmstate_virtio_vga = {
.name = "virtio-vga",
.version_id = 2,
.minimum_version_id = 2,
.fields = (VMStateField[]) {
/* no pci stuff here, saving the virtio device will handle that */
VMSTATE_STRUCT(vga, VirtIOVGA, 0, vmstate_vga_common, VGACommonState),
VMSTATE_END_OF_LIST()
}
};
/* VGA device wrapper around PCI device around virtio GPU */
static void virtio_vga_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VirtIOVGA *vvga = VIRTIO_VGA(vpci_dev);
VirtIOGPU *g = &vvga->vdev;
VGACommonState *vga = &vvga->vga;
Error *err = NULL;
uint32_t offset;
int i;
/* init vga compat bits */
vga->vram_size_mb = 8;
vga_common_init(vga, OBJECT(vpci_dev));
vga_init(vga, OBJECT(vpci_dev), pci_address_space(&vpci_dev->pci_dev),
pci_address_space_io(&vpci_dev->pci_dev), true);
pci_register_bar(&vpci_dev->pci_dev, 0,
PCI_BASE_ADDRESS_MEM_PREFETCH, &vga->vram);
/*
* Configure virtio bar and regions
*
* We use bar #2 for the mmio regions, to be compatible with stdvga.
* virtio regions are moved to the end of bar #2, to make room for
* the stdvga mmio registers at the start of bar #2.
*/
vpci_dev->modern_mem_bar_idx = 2;
vpci_dev->msix_bar_idx = 4;
if (!(vpci_dev->flags & VIRTIO_PCI_FLAG_PAGE_PER_VQ)) {
/*
* with page-per-vq=off there is no padding space we can use
* for the stdvga registers. Make the common and isr regions
* smaller then.
*/
vpci_dev->common.size /= 2;
vpci_dev->isr.size /= 2;
}
offset = memory_region_size(&vpci_dev->modern_bar);
offset -= vpci_dev->notify.size;
vpci_dev->notify.offset = offset;
offset -= vpci_dev->device.size;
vpci_dev->device.offset = offset;
offset -= vpci_dev->isr.size;
vpci_dev->isr.offset = offset;
offset -= vpci_dev->common.size;
vpci_dev->common.offset = offset;
/* init virtio bits */
qdev_set_parent_bus(DEVICE(g), BUS(&vpci_dev->bus));
virtio_pci_force_virtio_1(vpci_dev);
object_property_set_bool(OBJECT(g), true, "realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
/* add stdvga mmio regions */
pci_std_vga_mmio_region_init(vga, OBJECT(vvga), &vpci_dev->modern_bar,
vvga->vga_mrs, true);
vga->con = g->scanout[0].con;
g->disable_scanout = virtio_vga_disable_scanout;
graphic_console_set_hwops(vga->con, &virtio_vga_ops, vvga);
for (i = 0; i < g->conf.max_outputs; i++) {
object_property_set_link(OBJECT(g->scanout[i].con),
OBJECT(vpci_dev),
"device", errp);
}
}
static void virtio_vga_reset(DeviceState *dev)
{
VirtIOVGA *vvga = VIRTIO_VGA(dev);
vvga->vdev.enable = 0;
vga_dirty_log_start(&vvga->vga);
}
static Property virtio_vga_properties[] = {
DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_vga_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
dc->props = virtio_vga_properties;
dc->reset = virtio_vga_reset;
dc->vmsd = &vmstate_virtio_vga;
dc->hotpluggable = false;
k->realize = virtio_vga_realize;
pcidev_k->romfile = "vgabios-virtio.bin";
pcidev_k->class_id = PCI_CLASS_DISPLAY_VGA;
}
static void virtio_vga_inst_initfn(Object *obj)
{
VirtIOVGA *dev = VIRTIO_VGA(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_GPU);
}
static TypeInfo virtio_vga_info = {
.name = TYPE_VIRTIO_VGA,
.parent = TYPE_VIRTIO_PCI,
.instance_size = sizeof(struct VirtIOVGA),
.instance_init = virtio_vga_inst_initfn,
.class_init = virtio_vga_class_init,
};
static void virtio_vga_register_types(void)
{
type_register_static(&virtio_vga_info);
}
type_init(virtio_vga_register_types)
|
