hw/display/virtio-gpu-pci.c

   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/virtio/virtio.h"
  19 #include "hw/virtio/virtio-bus.h"
  20 #include "hw/virtio/virtio-gpu-pci.h"
  21
  22 static Property virtio_gpu_pci_base_properties[] = {
  23     DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy),
  24     DEFINE_PROP_END_OF_LIST(),
  25 };
  26
  27 static void virtio_gpu_pci_base_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
  28 {
  29     VirtIOGPUPCIBase *vgpu = VIRTIO_GPU_PCI_BASE(vpci_dev);
  30     VirtIOGPUBase *g = vgpu->vgpu;
  31     DeviceState *vdev = DEVICE(g);
  32     int i;
  33     Error *local_error = NULL;
  34
  35     qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
  36     if (!virtio_pci_force_virtio_1(vpci_dev, errp)) {
  37         return;
  38     }
  39     object_property_set_bool(OBJECT(vdev), true, "realized", &local_error);
  40
  41     if (local_error) {
  42         error_propagate(errp, local_error);
  43         return;
  44     }
  45
  46     for (i = 0; i < g->conf.max_outputs; i++) {
  47         object_property_set_link(OBJECT(g->scanout[i].con),
  48                                  OBJECT(vpci_dev),
  49                                  "device", errp);
  50     }
  51 }
  52
  53 static void virtio_gpu_pci_base_class_init(ObjectClass *klass, void *data)
  54 {
  55     DeviceClass *dc = DEVICE_CLASS(klass);
  56     VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
  57     PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
  58
  59     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
  60     dc->props = virtio_gpu_pci_base_properties;
  61     dc->hotpluggable = false;
  62     k->realize = virtio_gpu_pci_base_realize;
  63     pcidev_k->class_id = PCI_CLASS_DISPLAY_OTHER;
  64 }
  65
  66 static const TypeInfo virtio_gpu_pci_base_info = {
  67     .name = TYPE_VIRTIO_GPU_PCI_BASE,
  68     .parent = TYPE_VIRTIO_PCI,
  69     .instance_size = sizeof(VirtIOGPUPCIBase),
  70     .class_init = virtio_gpu_pci_base_class_init,
  71     .abstract = true
  72 };
  73
  74 #define TYPE_VIRTIO_GPU_PCI "virtio-gpu-pci"
  75 #define VIRTIO_GPU_PCI(obj)                                 \
  76     OBJECT_CHECK(VirtIOGPUPCI, (obj), TYPE_VIRTIO_GPU_PCI)
  77
  78 typedef struct VirtIOGPUPCI {
  79     VirtIOGPUPCIBase parent_obj;
  80     VirtIOGPU vdev;
  81 } VirtIOGPUPCI;
  82
  83 static void virtio_gpu_initfn(Object *obj)
  84 {
  85     VirtIOGPUPCI *dev = VIRTIO_GPU_PCI(obj);
  86
  87     virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
  88                                 TYPE_VIRTIO_GPU);
  89     VIRTIO_GPU_PCI_BASE(obj)->vgpu = VIRTIO_GPU_BASE(&dev->vdev);
  90 }
  91
  92 static const VirtioPCIDeviceTypeInfo virtio_gpu_pci_info = {
  93     .generic_name = TYPE_VIRTIO_GPU_PCI,
  94     .parent = TYPE_VIRTIO_GPU_PCI_BASE,
  95     .instance_size = sizeof(VirtIOGPUPCI),
  96     .instance_init = virtio_gpu_initfn,
  97 };
  98
  99 static void virtio_gpu_pci_register_types(void)
 100 {
 101     type_register_static(&virtio_gpu_pci_base_info);
 102     virtio_pci_types_register(&virtio_gpu_pci_info);
 103 }
 104
 105 type_init(virtio_gpu_pci_register_types)