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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> | |
27 | ||
28 | #include "virtgpu_drv.h" | |
29 | ||
30 | int drm_virtio_set_busid(struct drm_device *dev, struct drm_master *master) | |
31 | { | |
32 | struct pci_dev *pdev = dev->pdev; | |
33 | ||
34 | if (pdev) { | |
35 | return drm_pci_set_busid(dev, master); | |
36 | } | |
37 | return 0; | |
38 | } | |
39 | ||
50cb941a GH |
40 | static void virtio_pci_kick_out_firmware_fb(struct pci_dev *pci_dev) |
41 | { | |
42 | struct apertures_struct *ap; | |
43 | bool primary; | |
44 | ||
45 | ap = alloc_apertures(1); | |
46 | if (!ap) | |
47 | return; | |
48 | ||
49 | ap->ranges[0].base = pci_resource_start(pci_dev, 0); | |
50 | ap->ranges[0].size = pci_resource_len(pci_dev, 0); | |
51 | ||
52 | primary = pci_dev->resource[PCI_ROM_RESOURCE].flags | |
53 | & IORESOURCE_ROM_SHADOW; | |
54 | ||
55 | remove_conflicting_framebuffers(ap, "virtiodrmfb", primary); | |
56 | ||
57 | kfree(ap); | |
58 | } | |
59 | ||
dc5698e8 DA |
60 | int drm_virtio_init(struct drm_driver *driver, struct virtio_device *vdev) |
61 | { | |
62 | struct drm_device *dev; | |
63 | int ret; | |
64 | ||
65 | dev = drm_dev_alloc(driver, &vdev->dev); | |
66 | if (!dev) | |
67 | return -ENOMEM; | |
68 | dev->virtdev = vdev; | |
69 | vdev->priv = dev; | |
70 | ||
71 | if (strcmp(vdev->dev.parent->bus->name, "pci") == 0) { | |
72 | struct pci_dev *pdev = to_pci_dev(vdev->dev.parent); | |
73 | bool vga = (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA; | |
74 | ||
50cb941a GH |
75 | DRM_INFO("pci: %s detected\n", |
76 | vga ? "virtio-vga" : "virtio-gpu-pci"); | |
dc5698e8 | 77 | dev->pdev = pdev; |
50cb941a GH |
78 | if (vga) |
79 | virtio_pci_kick_out_firmware_fb(pdev); | |
dc5698e8 DA |
80 | } |
81 | ||
82 | ret = drm_dev_register(dev, 0); | |
83 | if (ret) | |
84 | goto err_free; | |
85 | ||
86 | DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name, | |
87 | driver->major, driver->minor, driver->patchlevel, | |
88 | driver->date, dev->primary->index); | |
89 | ||
90 | return 0; | |
91 | ||
92 | err_free: | |
93 | drm_dev_unref(dev); | |
94 | return ret; | |
95 | } |