1 /* 2 * Virtio video device 3 * 4 * Copyright Red Hat 5 * 6 * Authors: 7 * Dave Airlie 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or later. 10 * See the COPYING file in the top-level directory. 11 * 12 */ 13 14 #include "qemu/osdep.h" 15 #include "qapi/error.h" 16 #include "qemu/module.h" 17 #include "hw/pci/pci.h" 18 #include "hw/qdev-properties.h" 19 #include "hw/virtio/virtio.h" 20 #include "hw/virtio/virtio-bus.h" 21 #include "hw/virtio/virtio-gpu-pci.h" 22 #include "qom/object.h" 23 24 static const Property virtio_gpu_pci_base_properties[] = { 25 DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy), 26 }; 27 28 static void virtio_gpu_pci_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 29 { 30 VirtIOGPUPCIBase *vgpu = VIRTIO_GPU_PCI_BASE(vpci_dev); 31 VirtIOGPUBase *g = vgpu->vgpu; 32 DeviceState *vdev = DEVICE(g); 33 int i; 34 35 if (virtio_gpu_hostmem_enabled(g->conf)) { 36 vpci_dev->msix_bar_idx = 1; 37 vpci_dev->modern_mem_bar_idx = 2; 38 memory_region_init(&g->hostmem, OBJECT(g), "virtio-gpu-hostmem", 39 g->conf.hostmem); 40 pci_register_bar(&vpci_dev->pci_dev, 4, 41 PCI_BASE_ADDRESS_SPACE_MEMORY | 42 PCI_BASE_ADDRESS_MEM_PREFETCH | 43 PCI_BASE_ADDRESS_MEM_TYPE_64, 44 &g->hostmem); 45 virtio_pci_add_shm_cap(vpci_dev, 4, 0, g->conf.hostmem, 46 VIRTIO_GPU_SHM_ID_HOST_VISIBLE); 47 } 48 49 virtio_pci_force_virtio_1(vpci_dev); 50 if (!qdev_realize(vdev, BUS(&vpci_dev->bus), errp)) { 51 return; 52 } 53 54 for (i = 0; i < g->conf.max_outputs; i++) { 55 object_property_set_link(OBJECT(g->scanout[i].con), "device", 56 OBJECT(vpci_dev), &error_abort); 57 } 58 } 59 60 static void virtio_gpu_pci_base_class_init(ObjectClass *klass, void *data) 61 { 62 DeviceClass *dc = DEVICE_CLASS(klass); 63 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 64 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 65 66 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); 67 device_class_set_props(dc, virtio_gpu_pci_base_properties); 68 dc->hotpluggable = false; 69 k->realize = virtio_gpu_pci_base_realize; 70 pcidev_k->class_id = PCI_CLASS_DISPLAY_OTHER; 71 } 72 73 static const TypeInfo virtio_gpu_pci_base_info = { 74 .name = TYPE_VIRTIO_GPU_PCI_BASE, 75 .parent = TYPE_VIRTIO_PCI, 76 .instance_size = sizeof(VirtIOGPUPCIBase), 77 .class_init = virtio_gpu_pci_base_class_init, 78 .abstract = true 79 }; 80 module_obj(TYPE_VIRTIO_GPU_PCI_BASE); 81 module_kconfig(VIRTIO_PCI); 82 83 #define TYPE_VIRTIO_GPU_PCI "virtio-gpu-pci" 84 typedef struct VirtIOGPUPCI VirtIOGPUPCI; 85 DECLARE_INSTANCE_CHECKER(VirtIOGPUPCI, VIRTIO_GPU_PCI, 86 TYPE_VIRTIO_GPU_PCI) 87 88 struct VirtIOGPUPCI { 89 VirtIOGPUPCIBase parent_obj; 90 VirtIOGPU vdev; 91 }; 92 93 static void virtio_gpu_initfn(Object *obj) 94 { 95 VirtIOGPUPCI *dev = VIRTIO_GPU_PCI(obj); 96 97 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 98 TYPE_VIRTIO_GPU); 99 VIRTIO_GPU_PCI_BASE(obj)->vgpu = VIRTIO_GPU_BASE(&dev->vdev); 100 } 101 102 static const VirtioPCIDeviceTypeInfo virtio_gpu_pci_info = { 103 .generic_name = TYPE_VIRTIO_GPU_PCI, 104 .parent = TYPE_VIRTIO_GPU_PCI_BASE, 105 .instance_size = sizeof(VirtIOGPUPCI), 106 .instance_init = virtio_gpu_initfn, 107 }; 108 module_obj(TYPE_VIRTIO_GPU_PCI); 109 110 static void virtio_gpu_pci_register_types(void) 111 { 112 type_register_static(&virtio_gpu_pci_base_info); 113 virtio_pci_types_register(&virtio_gpu_pci_info); 114 } 115 116 type_init(virtio_gpu_pci_register_types) 117