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dc5698e8 DA |
1 | /* |
2 | * Copyright (C) 2015 Red Hat, Inc. | |
3 | * All Rights Reserved. | |
4 | * | |
5 | * Permission is hereby granted, free of charge, to any person obtaining | |
6 | * a copy of this software and associated documentation files (the | |
7 | * "Software"), to deal in the Software without restriction, including | |
8 | * without limitation the rights to use, copy, modify, merge, publish, | |
9 | * distribute, sublicense, and/or sell copies of the Software, and to | |
10 | * permit persons to whom the Software is furnished to do so, subject to | |
11 | * the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice (including the | |
14 | * next paragraph) shall be included in all copies or substantial | |
15 | * portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
18 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
19 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
20 | * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE | |
21 | * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | |
22 | * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | |
23 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include <linux/pci.h> | |
44adece5 | 27 | #include <drm/drm_fb_helper.h> |
dc5698e8 DA |
28 | |
29 | #include "virtgpu_drv.h" | |
30 | ||
50cb941a GH |
31 | static void virtio_pci_kick_out_firmware_fb(struct pci_dev *pci_dev) |
32 | { | |
33 | struct apertures_struct *ap; | |
34 | bool primary; | |
35 | ||
36 | ap = alloc_apertures(1); | |
37 | if (!ap) | |
38 | return; | |
39 | ||
40 | ap->ranges[0].base = pci_resource_start(pci_dev, 0); | |
41 | ap->ranges[0].size = pci_resource_len(pci_dev, 0); | |
42 | ||
43 | primary = pci_dev->resource[PCI_ROM_RESOURCE].flags | |
44 | & IORESOURCE_ROM_SHADOW; | |
45 | ||
44adece5 | 46 | drm_fb_helper_remove_conflicting_framebuffers(ap, "virtiodrmfb", primary); |
50cb941a GH |
47 | |
48 | kfree(ap); | |
49 | } | |
50 | ||
dc5698e8 DA |
51 | int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev) |
52 | { | |
53 | struct drm_device *dev; | |
54 | int ret; | |
55 | ||
56 | dev = drm_dev_alloc(driver, &vdev->dev); | |
0f288605 TG |
57 | if (IS_ERR(dev)) |
58 | return PTR_ERR(dev); | |
dc5698e8 DA |
59 | dev->virtdev = vdev; |
60 | vdev->priv = dev; | |
61 | ||
62 | if (strcmp(vdev->dev.parent->bus->name, "pci") == 0) { | |
63 | struct pci_dev *pdev = to_pci_dev(vdev->dev.parent); | |
64 | bool vga = (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA; | |
65 | ||
50cb941a GH |
66 | DRM_INFO("pci: %s detected\n", |
67 | vga ? "virtio-vga" : "virtio-gpu-pci"); | |
dc5698e8 | 68 | dev->pdev = pdev; |
50cb941a GH |
69 | if (vga) |
70 | virtio_pci_kick_out_firmware_fb(pdev); | |
dc5698e8 DA |
71 | } |
72 | ||
73 | ret = drm_dev_register(dev, 0); | |
74 | if (ret) | |
75 | goto err_free; | |
76 | ||
77 | DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name, | |
78 | driver->major, driver->minor, driver->patchlevel, | |
79 | driver->date, dev->primary->index); | |
80 | ||
81 | return 0; | |
82 | ||
83 | err_free: | |
84 | drm_dev_unref(dev); | |
85 | return ret; | |
86 | } |