Add virtio-vga bits.

	return 0;

}

static void virtio_pci_kick_out_firmware_fb(struct pci_dev *pci_dev)

{

	struct apertures_struct *ap;

	bool primary;

	ap = alloc_apertures(1);

	if (!ap)

		return;

	ap->ranges[0].base = pci_resource_start(pci_dev, 0);

	ap->ranges[0].size = pci_resource_len(pci_dev, 0);

	primary = pci_dev->resource[PCI_ROM_RESOURCE].flags

		& IORESOURCE_ROM_SHADOW;

	remove_conflicting_framebuffers(ap, "virtiodrmfb", primary);

	kfree(ap);

}

int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev)

{

	struct drm_device *dev;

		struct pci_dev *pdev = to_pci_dev(vdev->dev.parent);

		bool vga = (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;

		if (vga) {

			/*

			 * Need to make sure we don't have two drivers

			 * for the same hardware here.  Some day we

			 * will simply kick out the firmware

			 * (vesa/efi) framebuffer.

			 *

			 * Virtual hardware specs for virtio-vga are

			 * not finalized yet, therefore we can't add

			 * code for that yet.

			 *

			 * So ignore the device for the time being,

			 * and suggest to the user use the device

			 * variant without vga compatibility mode.

			 */

			DRM_ERROR("virtio-vga not (yet) supported\n");

			DRM_ERROR("please use virtio-gpu-pci instead\n");

			ret = -ENODEV;

			goto err_free;

		}

		DRM_INFO("pci: %s detected\n",

			 vga ? "virtio-vga" : "virtio-gpu-pci");

		dev->pdev = pdev;

		if (vga)

			virtio_pci_kick_out_firmware_fb(pdev);

	}

	ret = drm_dev_register(dev, 0);