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1 | /* |
2 | * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA, | |
3 | * All Rights Reserved. | |
4 | * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA, | |
5 | * All Rights Reserved. | |
6 | * | |
7 | * Permission is hereby granted, free of charge, to any person obtaining a | |
8 | * copy of this software and associated documentation files (the "Software"), | |
9 | * to deal in the Software without restriction, including without limitation | |
10 | * the rights to use, copy, modify, merge, publish, distribute, sub license, | |
11 | * and/or sell copies of the Software, and to permit persons to whom the | |
12 | * Software is furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | */ | |
26 | ||
760285e7 | 27 | #include <drm/drmP.h> |
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28 | |
29 | #include "nouveau_drv.h" | |
30 | ||
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31 | int |
32 | nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma) | |
33 | { | |
34 | struct drm_file *file_priv = filp->private_data; | |
35 | struct drm_nouveau_private *dev_priv = | |
36 | file_priv->minor->dev->dev_private; | |
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37 | |
38 | if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) | |
39 | return drm_mmap(filp, vma); | |
40 | ||
1959ca80 | 41 | return ttm_bo_mmap(filp, vma, &dev_priv->ttm.bdev); |
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42 | } |
43 | ||
44 | static int | |
ba4420c2 | 45 | nouveau_ttm_mem_global_init(struct drm_global_reference *ref) |
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46 | { |
47 | return ttm_mem_global_init(ref->object); | |
48 | } | |
49 | ||
50 | static void | |
ba4420c2 | 51 | nouveau_ttm_mem_global_release(struct drm_global_reference *ref) |
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52 | { |
53 | ttm_mem_global_release(ref->object); | |
54 | } | |
55 | ||
56 | int | |
57 | nouveau_ttm_global_init(struct drm_nouveau_private *dev_priv) | |
58 | { | |
ba4420c2 | 59 | struct drm_global_reference *global_ref; |
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60 | int ret; |
61 | ||
62 | global_ref = &dev_priv->ttm.mem_global_ref; | |
ba4420c2 | 63 | global_ref->global_type = DRM_GLOBAL_TTM_MEM; |
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64 | global_ref->size = sizeof(struct ttm_mem_global); |
65 | global_ref->init = &nouveau_ttm_mem_global_init; | |
66 | global_ref->release = &nouveau_ttm_mem_global_release; | |
67 | ||
ba4420c2 | 68 | ret = drm_global_item_ref(global_ref); |
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69 | if (unlikely(ret != 0)) { |
70 | DRM_ERROR("Failed setting up TTM memory accounting\n"); | |
71 | dev_priv->ttm.mem_global_ref.release = NULL; | |
72 | return ret; | |
73 | } | |
74 | ||
75 | dev_priv->ttm.bo_global_ref.mem_glob = global_ref->object; | |
76 | global_ref = &dev_priv->ttm.bo_global_ref.ref; | |
ba4420c2 | 77 | global_ref->global_type = DRM_GLOBAL_TTM_BO; |
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78 | global_ref->size = sizeof(struct ttm_bo_global); |
79 | global_ref->init = &ttm_bo_global_init; | |
80 | global_ref->release = &ttm_bo_global_release; | |
81 | ||
ba4420c2 | 82 | ret = drm_global_item_ref(global_ref); |
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83 | if (unlikely(ret != 0)) { |
84 | DRM_ERROR("Failed setting up TTM BO subsystem\n"); | |
ba4420c2 | 85 | drm_global_item_unref(&dev_priv->ttm.mem_global_ref); |
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86 | dev_priv->ttm.mem_global_ref.release = NULL; |
87 | return ret; | |
88 | } | |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
93 | void | |
94 | nouveau_ttm_global_release(struct drm_nouveau_private *dev_priv) | |
95 | { | |
96 | if (dev_priv->ttm.mem_global_ref.release == NULL) | |
97 | return; | |
98 | ||
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99 | drm_global_item_unref(&dev_priv->ttm.bo_global_ref.ref); |
100 | drm_global_item_unref(&dev_priv->ttm.mem_global_ref); | |
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101 | dev_priv->ttm.mem_global_ref.release = NULL; |
102 | } | |
103 |