virtio-gpu: block any rendering until client (ui) is done
[qemu/rayw.git] / hw / display / virtio-vga.c
blobe58b165ae56f5942d0d388f80e5891fed0f93ef7
1 #include "qemu/osdep.h"
2 #include "hw/hw.h"
3 #include "hw/pci/pci.h"
4 #include "ui/console.h"
5 #include "vga_int.h"
6 #include "hw/virtio/virtio-pci.h"
8 /*
9 * virtio-vga: This extends VirtioPCIProxy.
11 #define TYPE_VIRTIO_VGA "virtio-vga"
12 #define VIRTIO_VGA(obj) \
13 OBJECT_CHECK(VirtIOVGA, (obj), TYPE_VIRTIO_VGA)
15 typedef struct VirtIOVGA {
16 VirtIOPCIProxy parent_obj;
17 VirtIOGPU vdev;
18 VGACommonState vga;
19 MemoryRegion vga_mrs[3];
20 } VirtIOVGA;
22 static void virtio_vga_invalidate_display(void *opaque)
24 VirtIOVGA *vvga = opaque;
26 if (vvga->vdev.enable) {
27 virtio_gpu_ops.invalidate(&vvga->vdev);
28 } else {
29 vvga->vga.hw_ops->invalidate(&vvga->vga);
33 static void virtio_vga_update_display(void *opaque)
35 VirtIOVGA *vvga = opaque;
37 if (vvga->vdev.enable) {
38 virtio_gpu_ops.gfx_update(&vvga->vdev);
39 } else {
40 vvga->vga.hw_ops->gfx_update(&vvga->vga);
44 static void virtio_vga_text_update(void *opaque, console_ch_t *chardata)
46 VirtIOVGA *vvga = opaque;
48 if (vvga->vdev.enable) {
49 if (virtio_gpu_ops.text_update) {
50 virtio_gpu_ops.text_update(&vvga->vdev, chardata);
52 } else {
53 if (vvga->vga.hw_ops->text_update) {
54 vvga->vga.hw_ops->text_update(&vvga->vga, chardata);
59 static int virtio_vga_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
61 VirtIOVGA *vvga = opaque;
63 if (virtio_gpu_ops.ui_info) {
64 return virtio_gpu_ops.ui_info(&vvga->vdev, idx, info);
66 return -1;
69 static void virtio_vga_gl_block(void *opaque, bool block)
71 VirtIOVGA *vvga = opaque;
73 if (virtio_gpu_ops.gl_block) {
74 virtio_gpu_ops.gl_block(&vvga->vdev, block);
78 static const GraphicHwOps virtio_vga_ops = {
79 .invalidate = virtio_vga_invalidate_display,
80 .gfx_update = virtio_vga_update_display,
81 .text_update = virtio_vga_text_update,
82 .ui_info = virtio_vga_ui_info,
83 .gl_block = virtio_vga_gl_block,
86 /* VGA device wrapper around PCI device around virtio GPU */
87 static void virtio_vga_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
89 VirtIOVGA *vvga = VIRTIO_VGA(vpci_dev);
90 VirtIOGPU *g = &vvga->vdev;
91 VGACommonState *vga = &vvga->vga;
92 uint32_t offset;
93 int i;
95 /* init vga compat bits */
96 vga->vram_size_mb = 8;
97 vga_common_init(vga, OBJECT(vpci_dev), false);
98 vga_init(vga, OBJECT(vpci_dev), pci_address_space(&vpci_dev->pci_dev),
99 pci_address_space_io(&vpci_dev->pci_dev), true);
100 pci_register_bar(&vpci_dev->pci_dev, 0,
101 PCI_BASE_ADDRESS_MEM_PREFETCH, &vga->vram);
104 * Configure virtio bar and regions
106 * We use bar #2 for the mmio regions, to be compatible with stdvga.
107 * virtio regions are moved to the end of bar #2, to make room for
108 * the stdvga mmio registers at the start of bar #2.
110 vpci_dev->modern_mem_bar = 2;
111 vpci_dev->msix_bar = 4;
112 offset = memory_region_size(&vpci_dev->modern_bar);
113 offset -= vpci_dev->notify.size;
114 vpci_dev->notify.offset = offset;
115 offset -= vpci_dev->device.size;
116 vpci_dev->device.offset = offset;
117 offset -= vpci_dev->isr.size;
118 vpci_dev->isr.offset = offset;
119 offset -= vpci_dev->common.size;
120 vpci_dev->common.offset = offset;
122 /* init virtio bits */
123 qdev_set_parent_bus(DEVICE(g), BUS(&vpci_dev->bus));
124 /* force virtio-1.0 */
125 vpci_dev->flags &= ~VIRTIO_PCI_FLAG_DISABLE_MODERN;
126 vpci_dev->flags |= VIRTIO_PCI_FLAG_DISABLE_LEGACY;
127 object_property_set_bool(OBJECT(g), true, "realized", errp);
129 /* add stdvga mmio regions */
130 pci_std_vga_mmio_region_init(vga, &vpci_dev->modern_bar,
131 vvga->vga_mrs, true);
133 vga->con = g->scanout[0].con;
134 graphic_console_set_hwops(vga->con, &virtio_vga_ops, vvga);
136 for (i = 0; i < g->conf.max_outputs; i++) {
137 object_property_set_link(OBJECT(g->scanout[i].con),
138 OBJECT(vpci_dev),
139 "device", errp);
143 static void virtio_vga_reset(DeviceState *dev)
145 VirtIOVGA *vvga = VIRTIO_VGA(dev);
146 vvga->vdev.enable = 0;
148 vga_dirty_log_start(&vvga->vga);
151 static Property virtio_vga_properties[] = {
152 DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy),
153 DEFINE_PROP_END_OF_LIST(),
156 static void virtio_vga_class_init(ObjectClass *klass, void *data)
158 DeviceClass *dc = DEVICE_CLASS(klass);
159 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
160 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
162 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
163 dc->props = virtio_vga_properties;
164 dc->reset = virtio_vga_reset;
165 dc->hotpluggable = false;
167 k->realize = virtio_vga_realize;
168 pcidev_k->romfile = "vgabios-virtio.bin";
169 pcidev_k->class_id = PCI_CLASS_DISPLAY_VGA;
172 static void virtio_vga_inst_initfn(Object *obj)
174 VirtIOVGA *dev = VIRTIO_VGA(obj);
176 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
177 TYPE_VIRTIO_GPU);
180 static TypeInfo virtio_vga_info = {
181 .name = TYPE_VIRTIO_VGA,
182 .parent = TYPE_VIRTIO_PCI,
183 .instance_size = sizeof(struct VirtIOVGA),
184 .instance_init = virtio_vga_inst_initfn,
185 .class_init = virtio_vga_class_init,
188 static void virtio_vga_register_types(void)
190 type_register_static(&virtio_vga_info);
193 type_init(virtio_vga_register_types)