9a4c0e220d
Enable transitional virtio devices by default. Enable virtio-1.0 for devices plugged into PCIe ports (Root ports or Downstream ports). Using the virtio-1 mode will remove the limitation of the number of devices that can be attached to a machine by removing the need for the IO BAR. Signed-off-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/*
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* Virtio video device
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*
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* Copyright Red Hat
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*
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* Authors:
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* Dave Airlie
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#include "qemu/osdep.h"
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#include "hw/pci/pci.h"
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#include "hw/virtio/virtio.h"
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#include "hw/virtio/virtio-bus.h"
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#include "hw/virtio/virtio-pci.h"
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#include "hw/virtio/virtio-gpu.h"
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static Property virtio_gpu_pci_properties[] = {
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DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void virtio_gpu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
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{
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VirtIOGPUPCI *vgpu = VIRTIO_GPU_PCI(vpci_dev);
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VirtIOGPU *g = &vgpu->vdev;
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DeviceState *vdev = DEVICE(&vgpu->vdev);
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int i;
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qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
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virtio_pci_force_virtio_1(vpci_dev);
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object_property_set_bool(OBJECT(vdev), true, "realized", errp);
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for (i = 0; i < g->conf.max_outputs; i++) {
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object_property_set_link(OBJECT(g->scanout[i].con),
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OBJECT(vpci_dev),
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"device", errp);
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}
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}
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static void virtio_gpu_pci_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
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PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
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set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
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dc->props = virtio_gpu_pci_properties;
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k->realize = virtio_gpu_pci_realize;
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pcidev_k->class_id = PCI_CLASS_DISPLAY_OTHER;
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}
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static void virtio_gpu_initfn(Object *obj)
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{
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VirtIOGPUPCI *dev = VIRTIO_GPU_PCI(obj);
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virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
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TYPE_VIRTIO_GPU);
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}
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static const TypeInfo virtio_gpu_pci_info = {
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.name = TYPE_VIRTIO_GPU_PCI,
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.parent = TYPE_VIRTIO_PCI,
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.instance_size = sizeof(VirtIOGPUPCI),
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.instance_init = virtio_gpu_initfn,
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.class_init = virtio_gpu_pci_class_init,
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};
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static void virtio_gpu_pci_register_types(void)
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{
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type_register_static(&virtio_gpu_pci_info);
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}
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type_init(virtio_gpu_pci_register_types)
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