| /* |
| * 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 <drm/drm_fb_helper.h> |
| |
| #include "virtgpu_drv.h" |
| |
| 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; |
| |
| drm_fb_helper_remove_conflicting_framebuffers(ap, "virtiodrmfb", primary); |
| |
| kfree(ap); |
| } |
| |
| 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; |
| |
| 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); |
| 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; |
| } |