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