92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
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/*
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* Copyright (C) 2015 Red Hat, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <linux/pci.h>
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#include "virtgpu_drv.h"
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int drm_virtio_set_busid(struct drm_device *dev, struct drm_master *master)
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{
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struct pci_dev *pdev = dev->pdev;
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if (pdev) {
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return drm_pci_set_busid(dev, master);
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}
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return 0;
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}
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int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev)
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{
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struct drm_device *dev;
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int ret;
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dev = drm_dev_alloc(driver, &vdev->dev);
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if (!dev)
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return -ENOMEM;
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dev->virtdev = vdev;
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vdev->priv = dev;
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if (strcmp(vdev->dev.parent->bus->name, "pci") == 0) {
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struct pci_dev *pdev = to_pci_dev(vdev->dev.parent);
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bool vga = (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
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if (vga) {
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/*
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* Need to make sure we don't have two drivers
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* for the same hardware here. Some day we
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* will simply kick out the firmware
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* (vesa/efi) framebuffer.
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*
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* Virtual hardware specs for virtio-vga are
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* not finalized yet, therefore we can't add
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* code for that yet.
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*
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* So ignore the device for the time being,
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* and suggest to the user use the device
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* variant without vga compatibility mode.
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*/
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DRM_ERROR("virtio-vga not (yet) supported\n");
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DRM_ERROR("please use virtio-gpu-pci instead\n");
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ret = -ENODEV;
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goto err_free;
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}
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dev->pdev = pdev;
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}
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ret = drm_dev_register(dev, 0);
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if (ret)
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goto err_free;
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DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
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driver->major, driver->minor, driver->patchlevel,
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driver->date, dev->primary->index);
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return 0;
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err_free:
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drm_dev_unref(dev);
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return ret;
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}
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