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