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