1 | #include "qemu/osdep.h" |
2 | #include "hw/pci/pci.h" |
3 | #include "hw/qdev-properties.h" |
4 | #include "hw/virtio/virtio-gpu.h" |
5 | #include "qapi/error.h" |
6 | #include "qemu/module.h" |
7 | #include "virtio-vga.h" |
8 | |
9 | static void virtio_vga_base_invalidate_display(void *opaque) |
10 | { |
11 | VirtIOVGABase *vvga = opaque; |
12 | VirtIOGPUBase *g = vvga->vgpu; |
13 | |
14 | if (g->enable) { |
15 | virtio_gpu_ops.invalidate(g); |
16 | } else { |
17 | vvga->vga.hw_ops->invalidate(&vvga->vga); |
18 | } |
19 | } |
20 | |
21 | static void virtio_vga_base_update_display(void *opaque) |
22 | { |
23 | VirtIOVGABase *vvga = opaque; |
24 | VirtIOGPUBase *g = vvga->vgpu; |
25 | |
26 | if (g->enable) { |
27 | virtio_gpu_ops.gfx_update(g); |
28 | } else { |
29 | vvga->vga.hw_ops->gfx_update(&vvga->vga); |
30 | } |
31 | } |
32 | |
33 | static void virtio_vga_base_text_update(void *opaque, console_ch_t *chardata) |
34 | { |
35 | VirtIOVGABase *vvga = opaque; |
36 | VirtIOGPUBase *g = vvga->vgpu; |
37 | |
38 | if (g->enable) { |
39 | if (virtio_gpu_ops.text_update) { |
40 | virtio_gpu_ops.text_update(g, chardata); |
41 | } |
42 | } else { |
43 | if (vvga->vga.hw_ops->text_update) { |
44 | vvga->vga.hw_ops->text_update(&vvga->vga, chardata); |
45 | } |
46 | } |
47 | } |
48 | |
49 | static int virtio_vga_base_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info) |
50 | { |
51 | VirtIOVGABase *vvga = opaque; |
52 | VirtIOGPUBase *g = vvga->vgpu; |
53 | |
54 | if (virtio_gpu_ops.ui_info) { |
55 | return virtio_gpu_ops.ui_info(g, idx, info); |
56 | } |
57 | return -1; |
58 | } |
59 | |
60 | static void virtio_vga_base_gl_block(void *opaque, bool block) |
61 | { |
62 | VirtIOVGABase *vvga = opaque; |
63 | VirtIOGPUBase *g = vvga->vgpu; |
64 | |
65 | if (virtio_gpu_ops.gl_block) { |
66 | virtio_gpu_ops.gl_block(g, block); |
67 | } |
68 | } |
69 | |
70 | static const GraphicHwOps virtio_vga_base_ops = { |
71 | .invalidate = virtio_vga_base_invalidate_display, |
72 | .gfx_update = virtio_vga_base_update_display, |
73 | .text_update = virtio_vga_base_text_update, |
74 | .ui_info = virtio_vga_base_ui_info, |
75 | .gl_block = virtio_vga_base_gl_block, |
76 | }; |
77 | |
78 | static const VMStateDescription vmstate_virtio_vga_base = { |
79 | .name = "virtio-vga" , |
80 | .version_id = 2, |
81 | .minimum_version_id = 2, |
82 | .fields = (VMStateField[]) { |
83 | /* no pci stuff here, saving the virtio device will handle that */ |
84 | VMSTATE_STRUCT(vga, VirtIOVGABase, 0, |
85 | vmstate_vga_common, VGACommonState), |
86 | VMSTATE_END_OF_LIST() |
87 | } |
88 | }; |
89 | |
90 | /* VGA device wrapper around PCI device around virtio GPU */ |
91 | static void virtio_vga_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp) |
92 | { |
93 | VirtIOVGABase *vvga = VIRTIO_VGA_BASE(vpci_dev); |
94 | VirtIOGPUBase *g = vvga->vgpu; |
95 | VGACommonState *vga = &vvga->vga; |
96 | Error *err = NULL; |
97 | uint32_t offset; |
98 | int i; |
99 | |
100 | /* init vga compat bits */ |
101 | vga->vram_size_mb = 8; |
102 | vga_common_init(vga, OBJECT(vpci_dev)); |
103 | vga_init(vga, OBJECT(vpci_dev), pci_address_space(&vpci_dev->pci_dev), |
104 | pci_address_space_io(&vpci_dev->pci_dev), true); |
105 | pci_register_bar(&vpci_dev->pci_dev, 0, |
106 | PCI_BASE_ADDRESS_MEM_PREFETCH, &vga->vram); |
107 | |
108 | /* |
109 | * Configure virtio bar and regions |
110 | * |
111 | * We use bar #2 for the mmio regions, to be compatible with stdvga. |
112 | * virtio regions are moved to the end of bar #2, to make room for |
113 | * the stdvga mmio registers at the start of bar #2. |
114 | */ |
115 | vpci_dev->modern_mem_bar_idx = 2; |
116 | vpci_dev->msix_bar_idx = 4; |
117 | |
118 | if (!(vpci_dev->flags & VIRTIO_PCI_FLAG_PAGE_PER_VQ)) { |
119 | /* |
120 | * with page-per-vq=off there is no padding space we can use |
121 | * for the stdvga registers. Make the common and isr regions |
122 | * smaller then. |
123 | */ |
124 | vpci_dev->common.size /= 2; |
125 | vpci_dev->isr.size /= 2; |
126 | } |
127 | |
128 | offset = memory_region_size(&vpci_dev->modern_bar); |
129 | offset -= vpci_dev->notify.size; |
130 | vpci_dev->notify.offset = offset; |
131 | offset -= vpci_dev->device.size; |
132 | vpci_dev->device.offset = offset; |
133 | offset -= vpci_dev->isr.size; |
134 | vpci_dev->isr.offset = offset; |
135 | offset -= vpci_dev->common.size; |
136 | vpci_dev->common.offset = offset; |
137 | |
138 | /* init virtio bits */ |
139 | qdev_set_parent_bus(DEVICE(g), BUS(&vpci_dev->bus)); |
140 | virtio_pci_force_virtio_1(vpci_dev); |
141 | object_property_set_bool(OBJECT(g), true, "realized" , &err); |
142 | if (err) { |
143 | error_propagate(errp, err); |
144 | return; |
145 | } |
146 | |
147 | /* add stdvga mmio regions */ |
148 | pci_std_vga_mmio_region_init(vga, OBJECT(vvga), &vpci_dev->modern_bar, |
149 | vvga->vga_mrs, true, false); |
150 | |
151 | vga->con = g->scanout[0].con; |
152 | graphic_console_set_hwops(vga->con, &virtio_vga_base_ops, vvga); |
153 | |
154 | for (i = 0; i < g->conf.max_outputs; i++) { |
155 | object_property_set_link(OBJECT(g->scanout[i].con), |
156 | OBJECT(vpci_dev), |
157 | "device" , errp); |
158 | } |
159 | } |
160 | |
161 | static void virtio_vga_base_reset(DeviceState *dev) |
162 | { |
163 | VirtIOVGABaseClass *klass = VIRTIO_VGA_BASE_GET_CLASS(dev); |
164 | VirtIOVGABase *vvga = VIRTIO_VGA_BASE(dev); |
165 | |
166 | /* reset virtio-gpu */ |
167 | klass->parent_reset(dev); |
168 | |
169 | /* reset vga */ |
170 | vga_common_reset(&vvga->vga); |
171 | vga_dirty_log_start(&vvga->vga); |
172 | } |
173 | |
174 | static Property virtio_vga_base_properties[] = { |
175 | DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy), |
176 | DEFINE_PROP_END_OF_LIST(), |
177 | }; |
178 | |
179 | static void virtio_vga_base_class_init(ObjectClass *klass, void *data) |
180 | { |
181 | DeviceClass *dc = DEVICE_CLASS(klass); |
182 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); |
183 | VirtIOVGABaseClass *v = VIRTIO_VGA_BASE_CLASS(klass); |
184 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); |
185 | |
186 | set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); |
187 | dc->props = virtio_vga_base_properties; |
188 | dc->vmsd = &vmstate_virtio_vga_base; |
189 | dc->hotpluggable = false; |
190 | device_class_set_parent_reset(dc, virtio_vga_base_reset, |
191 | &v->parent_reset); |
192 | |
193 | k->realize = virtio_vga_base_realize; |
194 | pcidev_k->romfile = "vgabios-virtio.bin" ; |
195 | pcidev_k->class_id = PCI_CLASS_DISPLAY_VGA; |
196 | } |
197 | |
198 | static TypeInfo virtio_vga_base_info = { |
199 | .name = TYPE_VIRTIO_VGA_BASE, |
200 | .parent = TYPE_VIRTIO_PCI, |
201 | .instance_size = sizeof(struct VirtIOVGABase), |
202 | .class_size = sizeof(struct VirtIOVGABaseClass), |
203 | .class_init = virtio_vga_base_class_init, |
204 | .abstract = true, |
205 | }; |
206 | |
207 | #define TYPE_VIRTIO_VGA "virtio-vga" |
208 | |
209 | #define VIRTIO_VGA(obj) \ |
210 | OBJECT_CHECK(VirtIOVGA, (obj), TYPE_VIRTIO_VGA) |
211 | |
212 | typedef struct VirtIOVGA { |
213 | VirtIOVGABase parent_obj; |
214 | |
215 | VirtIOGPU vdev; |
216 | } VirtIOVGA; |
217 | |
218 | static void virtio_vga_inst_initfn(Object *obj) |
219 | { |
220 | VirtIOVGA *dev = VIRTIO_VGA(obj); |
221 | |
222 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), |
223 | TYPE_VIRTIO_GPU); |
224 | VIRTIO_VGA_BASE(dev)->vgpu = VIRTIO_GPU_BASE(&dev->vdev); |
225 | } |
226 | |
227 | |
228 | static VirtioPCIDeviceTypeInfo virtio_vga_info = { |
229 | .generic_name = TYPE_VIRTIO_VGA, |
230 | .parent = TYPE_VIRTIO_VGA_BASE, |
231 | .instance_size = sizeof(struct VirtIOVGA), |
232 | .instance_init = virtio_vga_inst_initfn, |
233 | }; |
234 | |
235 | static void virtio_vga_register_types(void) |
236 | { |
237 | type_register_static(&virtio_vga_base_info); |
238 | virtio_pci_types_register(&virtio_vga_info); |
239 | } |
240 | |
241 | type_init(virtio_vga_register_types) |
242 | |