virtio-gpu: split virtio-gpu, introduce virtio-gpu-base

Add a base class that is common to virtio-gpu and vhost-user-gpu
devices.

The VirtIOGPUBase base class provides common functionalities necessary
for both virtio-gpu and vhost-user-gpu:
- common configuration (max-outputs, initial resolution, flags)
- virtio device initialization, including queue setup
- device pre-conditions checks (iommu)
- migration blocker
- virtio device callbacks
- hooking up to qemu display subsystem
- a few common helper functions to reset the device, retrieve display
informations
- a class callback to unblock the rendering (for GL updates)

What is left to the virtio-gpu subdevice to take care of, in short,
are all the virtio queues handling, command processing and migration.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20190524130946.31736-8-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Marc-André Lureau 2019-05-24 15:09:44 +02:00 committed by Gerd Hoffmann
parent cb0efb7125
commit 50d8e25ea6
7 changed files with 461 additions and 322 deletions

View file

@ -41,7 +41,7 @@ static Property virtio_gpu_pci_properties[] = {
static void virtio_gpu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VirtIOGPUPCI *vgpu = VIRTIO_GPU_PCI(vpci_dev);
VirtIOGPU *g = &vgpu->vdev;
VirtIOGPUBase *g = VIRTIO_GPU_BASE(&vgpu->vdev);
DeviceState *vdev = DEVICE(&vgpu->vdev);
int i;
Error *local_error = NULL;