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/*
* Copyright (C) 2015 Red Hat, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <linux/pci.h>
#include "virtgpu_drv.h"
int drm_virtio_set_busid(struct drm_device *dev, struct drm_master *master)
{
struct pci_dev *pdev = dev->pdev;
if (pdev) {
return drm_pci_set_busid(dev, master);
}
return 0;
}
int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev)
{
struct drm_device *dev;
int ret;
dev = drm_dev_alloc(driver, &vdev->dev);
if (!dev)
return -ENOMEM;
dev->virtdev = vdev;
vdev->priv = dev;
if (strcmp(vdev->dev.parent->bus->name, "pci") == 0) {
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;
}
dev->pdev = pdev;
}
ret = drm_dev_register(dev, 0);
if (ret)
goto err_free;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
driver->major, driver->minor, driver->patchlevel,
driver->date, dev->primary->index);
return 0;
err_free:
drm_dev_unref(dev);
return ret;
}
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