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 #include "qom/object.h" 9 10 static void virtio_vga_base_invalidate_display(void *opaque) 11 { 12 VirtIOVGABase *vvga = opaque; 13 VirtIOGPUBase *g = vvga->vgpu; 14 15 if (g->enable) { 16 g->hw_ops->invalidate(g); 17 } else { 18 vvga->vga.hw_ops->invalidate(&vvga->vga); 19 } 20 } 21 22 static void virtio_vga_base_update_display(void *opaque) 23 { 24 VirtIOVGABase *vvga = opaque; 25 VirtIOGPUBase *g = vvga->vgpu; 26 27 if (g->enable) { 28 g->hw_ops->gfx_update(g); 29 } else { 30 vvga->vga.hw_ops->gfx_update(&vvga->vga); 31 } 32 } 33 34 static void virtio_vga_base_text_update(void *opaque, console_ch_t *chardata) 35 { 36 VirtIOVGABase *vvga = opaque; 37 VirtIOGPUBase *g = vvga->vgpu; 38 39 if (g->enable) { 40 if (g->hw_ops->text_update) { 41 g->hw_ops->text_update(g, chardata); 42 } 43 } else { 44 if (vvga->vga.hw_ops->text_update) { 45 vvga->vga.hw_ops->text_update(&vvga->vga, chardata); 46 } 47 } 48 } 49 50 static int virtio_vga_base_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info) 51 { 52 VirtIOVGABase *vvga = opaque; 53 VirtIOGPUBase *g = vvga->vgpu; 54 55 if (g->hw_ops->ui_info) { 56 return g->hw_ops->ui_info(g, idx, info); 57 } 58 return -1; 59 } 60 61 static void virtio_vga_base_gl_block(void *opaque, bool block) 62 { 63 VirtIOVGABase *vvga = opaque; 64 VirtIOGPUBase *g = vvga->vgpu; 65 66 if (g->hw_ops->gl_block) { 67 g->hw_ops->gl_block(g, block); 68 } 69 } 70 71 static int virtio_vga_base_get_flags(void *opaque) 72 { 73 VirtIOVGABase *vvga = opaque; 74 VirtIOGPUBase *g = vvga->vgpu; 75 76 return g->hw_ops->get_flags(g); 77 } 78 79 static const GraphicHwOps virtio_vga_base_ops = { 80 .get_flags = virtio_vga_base_get_flags, 81 .invalidate = virtio_vga_base_invalidate_display, 82 .gfx_update = virtio_vga_base_update_display, 83 .text_update = virtio_vga_base_text_update, 84 .ui_info = virtio_vga_base_ui_info, 85 .gl_block = virtio_vga_base_gl_block, 86 }; 87 88 static const VMStateDescription vmstate_virtio_vga_base = { 89 .name = "virtio-vga", 90 .version_id = 2, 91 .minimum_version_id = 2, 92 .fields = (VMStateField[]) { 93 /* no pci stuff here, saving the virtio device will handle that */ 94 VMSTATE_STRUCT(vga, VirtIOVGABase, 0, 95 vmstate_vga_common, VGACommonState), 96 VMSTATE_END_OF_LIST() 97 } 98 }; 99 100 /* VGA device wrapper around PCI device around virtio GPU */ 101 static void virtio_vga_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 102 { 103 VirtIOVGABase *vvga = VIRTIO_VGA_BASE(vpci_dev); 104 VirtIOGPUBase *g = vvga->vgpu; 105 VGACommonState *vga = &vvga->vga; 106 uint32_t offset; 107 int i; 108 109 /* init vga compat bits */ 110 vga->vram_size_mb = 8; 111 if (!vga_common_init(vga, OBJECT(vpci_dev), errp)) { 112 return; 113 } 114 vga_init(vga, OBJECT(vpci_dev), pci_address_space(&vpci_dev->pci_dev), 115 pci_address_space_io(&vpci_dev->pci_dev), true); 116 pci_register_bar(&vpci_dev->pci_dev, 0, 117 PCI_BASE_ADDRESS_MEM_PREFETCH, &vga->vram); 118 119 /* 120 * Configure virtio bar and regions 121 * 122 * We use bar #2 for the mmio regions, to be compatible with stdvga. 123 * virtio regions are moved to the end of bar #2, to make room for 124 * the stdvga mmio registers at the start of bar #2. 125 */ 126 vpci_dev->modern_mem_bar_idx = 2; 127 vpci_dev->msix_bar_idx = 4; 128 vpci_dev->modern_io_bar_idx = 5; 129 130 if (!(vpci_dev->flags & VIRTIO_PCI_FLAG_PAGE_PER_VQ)) { 131 /* 132 * with page-per-vq=off there is no padding space we can use 133 * for the stdvga registers. Make the common and isr regions 134 * smaller then. 135 */ 136 vpci_dev->common.size /= 2; 137 vpci_dev->isr.size /= 2; 138 } 139 140 offset = memory_region_size(&vpci_dev->modern_bar); 141 offset -= vpci_dev->notify.size; 142 vpci_dev->notify.offset = offset; 143 offset -= vpci_dev->device.size; 144 vpci_dev->device.offset = offset; 145 offset -= vpci_dev->isr.size; 146 vpci_dev->isr.offset = offset; 147 offset -= vpci_dev->common.size; 148 vpci_dev->common.offset = offset; 149 150 /* init virtio bits */ 151 virtio_pci_force_virtio_1(vpci_dev); 152 if (!qdev_realize(DEVICE(g), BUS(&vpci_dev->bus), errp)) { 153 return; 154 } 155 156 /* add stdvga mmio regions */ 157 pci_std_vga_mmio_region_init(vga, OBJECT(vvga), &vpci_dev->modern_bar, 158 vvga->vga_mrs, true, false); 159 160 vga->con = g->scanout[0].con; 161 graphic_console_set_hwops(vga->con, &virtio_vga_base_ops, vvga); 162 163 for (i = 0; i < g->conf.max_outputs; i++) { 164 object_property_set_link(OBJECT(g->scanout[i].con), "device", 165 OBJECT(vpci_dev), &error_abort); 166 } 167 } 168 169 static void virtio_vga_base_reset(DeviceState *dev) 170 { 171 VirtIOVGABaseClass *klass = VIRTIO_VGA_BASE_GET_CLASS(dev); 172 VirtIOVGABase *vvga = VIRTIO_VGA_BASE(dev); 173 174 /* reset virtio-gpu */ 175 klass->parent_reset(dev); 176 177 /* reset vga */ 178 vga_common_reset(&vvga->vga); 179 vga_dirty_log_start(&vvga->vga); 180 } 181 182 static bool virtio_vga_get_big_endian_fb(Object *obj, Error **errp) 183 { 184 VirtIOVGABase *d = VIRTIO_VGA_BASE(obj); 185 186 return d->vga.big_endian_fb; 187 } 188 189 static void virtio_vga_set_big_endian_fb(Object *obj, bool value, Error **errp) 190 { 191 VirtIOVGABase *d = VIRTIO_VGA_BASE(obj); 192 193 d->vga.big_endian_fb = value; 194 } 195 196 static Property virtio_vga_base_properties[] = { 197 DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy), 198 DEFINE_PROP_END_OF_LIST(), 199 }; 200 201 static void virtio_vga_base_class_init(ObjectClass *klass, void *data) 202 { 203 DeviceClass *dc = DEVICE_CLASS(klass); 204 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 205 VirtIOVGABaseClass *v = VIRTIO_VGA_BASE_CLASS(klass); 206 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 207 208 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); 209 device_class_set_props(dc, virtio_vga_base_properties); 210 dc->vmsd = &vmstate_virtio_vga_base; 211 dc->hotpluggable = false; 212 device_class_set_parent_reset(dc, virtio_vga_base_reset, 213 &v->parent_reset); 214 215 k->realize = virtio_vga_base_realize; 216 pcidev_k->romfile = "vgabios-virtio.bin"; 217 pcidev_k->class_id = PCI_CLASS_DISPLAY_VGA; 218 219 /* Expose framebuffer byteorder via QOM */ 220 object_class_property_add_bool(klass, "big-endian-framebuffer", 221 virtio_vga_get_big_endian_fb, 222 virtio_vga_set_big_endian_fb); 223 } 224 225 static const TypeInfo virtio_vga_base_info = { 226 .name = TYPE_VIRTIO_VGA_BASE, 227 .parent = TYPE_VIRTIO_PCI, 228 .instance_size = sizeof(VirtIOVGABase), 229 .class_size = sizeof(VirtIOVGABaseClass), 230 .class_init = virtio_vga_base_class_init, 231 .abstract = true, 232 }; 233 module_obj(TYPE_VIRTIO_VGA_BASE); 234 module_kconfig(VIRTIO_VGA); 235 236 #define TYPE_VIRTIO_VGA "virtio-vga" 237 238 typedef struct VirtIOVGA VirtIOVGA; 239 DECLARE_INSTANCE_CHECKER(VirtIOVGA, VIRTIO_VGA, 240 TYPE_VIRTIO_VGA) 241 242 struct VirtIOVGA { 243 VirtIOVGABase parent_obj; 244 245 VirtIOGPU vdev; 246 }; 247 248 static void virtio_vga_inst_initfn(Object *obj) 249 { 250 VirtIOVGA *dev = VIRTIO_VGA(obj); 251 252 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 253 TYPE_VIRTIO_GPU); 254 VIRTIO_VGA_BASE(dev)->vgpu = VIRTIO_GPU_BASE(&dev->vdev); 255 } 256 257 258 static VirtioPCIDeviceTypeInfo virtio_vga_info = { 259 .generic_name = TYPE_VIRTIO_VGA, 260 .parent = TYPE_VIRTIO_VGA_BASE, 261 .instance_size = sizeof(VirtIOVGA), 262 .instance_init = virtio_vga_inst_initfn, 263 }; 264 module_obj(TYPE_VIRTIO_VGA); 265 266 static void virtio_vga_register_types(void) 267 { 268 type_register_static(&virtio_vga_base_info); 269 virtio_pci_types_register(&virtio_vga_info); 270 } 271 272 type_init(virtio_vga_register_types) 273