@samitouri / QOSamiQemu
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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/core/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, const 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)