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 Property virtio_gpu_pci_base_properties[] = {
25 DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy),
26 DEFINE_PROP_END_OF_LIST(),
27 };
28
virtio_gpu_pci_base_realize(VirtIOPCIProxy * vpci_dev,Error ** errp)29 static void virtio_gpu_pci_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
30 {
31 VirtIOGPUPCIBase *vgpu = VIRTIO_GPU_PCI_BASE(vpci_dev);
32 VirtIOGPUBase *g = vgpu->vgpu;
33 DeviceState *vdev = DEVICE(g);
34 int i;
35
36 if (virtio_gpu_hostmem_enabled(g->conf)) {
37 vpci_dev->msix_bar_idx = 1;
38 vpci_dev->modern_mem_bar_idx = 2;
39 memory_region_init(&g->hostmem, OBJECT(g), "virtio-gpu-hostmem",
40 g->conf.hostmem);
41 pci_register_bar(&vpci_dev->pci_dev, 4,
42 PCI_BASE_ADDRESS_SPACE_MEMORY |
43 PCI_BASE_ADDRESS_MEM_PREFETCH |
44 PCI_BASE_ADDRESS_MEM_TYPE_64,
45 &g->hostmem);
46 virtio_pci_add_shm_cap(vpci_dev, 4, 0, g->conf.hostmem,
47 VIRTIO_GPU_SHM_ID_HOST_VISIBLE);
48 }
49
50 virtio_pci_force_virtio_1(vpci_dev);
51 if (!qdev_realize(vdev, BUS(&vpci_dev->bus), errp)) {
52 return;
53 }
54
55 for (i = 0; i < g->conf.max_outputs; i++) {
56 object_property_set_link(OBJECT(g->scanout[i].con), "device",
57 OBJECT(vpci_dev), &error_abort);
58 }
59 }
60
virtio_gpu_pci_base_class_init(ObjectClass * klass,void * data)61 static void virtio_gpu_pci_base_class_init(ObjectClass *klass, void *data)
62 {
63 DeviceClass *dc = DEVICE_CLASS(klass);
64 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
65 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
66
67 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
68 device_class_set_props(dc, virtio_gpu_pci_base_properties);
69 dc->hotpluggable = false;
70 k->realize = virtio_gpu_pci_base_realize;
71 pcidev_k->class_id = PCI_CLASS_DISPLAY_OTHER;
72 }
73
74 static const TypeInfo virtio_gpu_pci_base_info = {
75 .name = TYPE_VIRTIO_GPU_PCI_BASE,
76 .parent = TYPE_VIRTIO_PCI,
77 .instance_size = sizeof(VirtIOGPUPCIBase),
78 .class_init = virtio_gpu_pci_base_class_init,
79 .abstract = true
80 };
81 module_obj(TYPE_VIRTIO_GPU_PCI_BASE);
82 module_kconfig(VIRTIO_PCI);
83
84 #define TYPE_VIRTIO_GPU_PCI "virtio-gpu-pci"
85 typedef struct VirtIOGPUPCI VirtIOGPUPCI;
86 DECLARE_INSTANCE_CHECKER(VirtIOGPUPCI, VIRTIO_GPU_PCI,
87 TYPE_VIRTIO_GPU_PCI)
88
89 struct VirtIOGPUPCI {
90 VirtIOGPUPCIBase parent_obj;
91 VirtIOGPU vdev;
92 };
93
virtio_gpu_initfn(Object * obj)94 static void virtio_gpu_initfn(Object *obj)
95 {
96 VirtIOGPUPCI *dev = VIRTIO_GPU_PCI(obj);
97
98 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
99 TYPE_VIRTIO_GPU);
100 VIRTIO_GPU_PCI_BASE(obj)->vgpu = VIRTIO_GPU_BASE(&dev->vdev);
101 }
102
103 static const VirtioPCIDeviceTypeInfo virtio_gpu_pci_info = {
104 .generic_name = TYPE_VIRTIO_GPU_PCI,
105 .parent = TYPE_VIRTIO_GPU_PCI_BASE,
106 .instance_size = sizeof(VirtIOGPUPCI),
107 .instance_init = virtio_gpu_initfn,
108 };
109 module_obj(TYPE_VIRTIO_GPU_PCI);
110
virtio_gpu_pci_register_types(void)111 static void virtio_gpu_pci_register_types(void)
112 {
113 type_register_static(&virtio_gpu_pci_base_info);
114 virtio_pci_types_register(&virtio_gpu_pci_info);
115 }
116
117 type_init(virtio_gpu_pci_register_types)
118