Commit | Line | Data |
---|---|---|
6ee73861 BS |
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 | ||
27 | #include "drmP.h" | |
28 | ||
29 | #include "nouveau_drv.h" | |
30 | ||
31 | static struct vm_operations_struct nouveau_ttm_vm_ops; | |
32 | static const struct vm_operations_struct *ttm_vm_ops; | |
33 | ||
34 | static int | |
35 | nouveau_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
36 | { | |
37 | struct ttm_buffer_object *bo = vma->vm_private_data; | |
38 | int ret; | |
39 | ||
40 | if (unlikely(bo == NULL)) | |
41 | return VM_FAULT_NOPAGE; | |
42 | ||
43 | ret = ttm_vm_ops->fault(vma, vmf); | |
44 | return ret; | |
45 | } | |
46 | ||
47 | int | |
48 | nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma) | |
49 | { | |
50 | struct drm_file *file_priv = filp->private_data; | |
51 | struct drm_nouveau_private *dev_priv = | |
52 | file_priv->minor->dev->dev_private; | |
53 | int ret; | |
54 | ||
55 | if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) | |
56 | return drm_mmap(filp, vma); | |
57 | ||
58 | ret = ttm_bo_mmap(filp, vma, &dev_priv->ttm.bdev); | |
59 | if (unlikely(ret != 0)) | |
60 | return ret; | |
61 | ||
62 | if (unlikely(ttm_vm_ops == NULL)) { | |
63 | ttm_vm_ops = vma->vm_ops; | |
64 | nouveau_ttm_vm_ops = *ttm_vm_ops; | |
65 | nouveau_ttm_vm_ops.fault = &nouveau_ttm_fault; | |
66 | } | |
67 | ||
68 | vma->vm_ops = &nouveau_ttm_vm_ops; | |
69 | return 0; | |
70 | } | |
71 | ||
72 | static int | |
73 | nouveau_ttm_mem_global_init(struct ttm_global_reference *ref) | |
74 | { | |
75 | return ttm_mem_global_init(ref->object); | |
76 | } | |
77 | ||
78 | static void | |
79 | nouveau_ttm_mem_global_release(struct ttm_global_reference *ref) | |
80 | { | |
81 | ttm_mem_global_release(ref->object); | |
82 | } | |
83 | ||
84 | int | |
85 | nouveau_ttm_global_init(struct drm_nouveau_private *dev_priv) | |
86 | { | |
87 | struct ttm_global_reference *global_ref; | |
88 | int ret; | |
89 | ||
90 | global_ref = &dev_priv->ttm.mem_global_ref; | |
91 | global_ref->global_type = TTM_GLOBAL_TTM_MEM; | |
92 | global_ref->size = sizeof(struct ttm_mem_global); | |
93 | global_ref->init = &nouveau_ttm_mem_global_init; | |
94 | global_ref->release = &nouveau_ttm_mem_global_release; | |
95 | ||
96 | ret = ttm_global_item_ref(global_ref); | |
97 | if (unlikely(ret != 0)) { | |
98 | DRM_ERROR("Failed setting up TTM memory accounting\n"); | |
99 | dev_priv->ttm.mem_global_ref.release = NULL; | |
100 | return ret; | |
101 | } | |
102 | ||
103 | dev_priv->ttm.bo_global_ref.mem_glob = global_ref->object; | |
104 | global_ref = &dev_priv->ttm.bo_global_ref.ref; | |
105 | global_ref->global_type = TTM_GLOBAL_TTM_BO; | |
106 | global_ref->size = sizeof(struct ttm_bo_global); | |
107 | global_ref->init = &ttm_bo_global_init; | |
108 | global_ref->release = &ttm_bo_global_release; | |
109 | ||
110 | ret = ttm_global_item_ref(global_ref); | |
111 | if (unlikely(ret != 0)) { | |
112 | DRM_ERROR("Failed setting up TTM BO subsystem\n"); | |
113 | ttm_global_item_unref(&dev_priv->ttm.mem_global_ref); | |
114 | dev_priv->ttm.mem_global_ref.release = NULL; | |
115 | return ret; | |
116 | } | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
121 | void | |
122 | nouveau_ttm_global_release(struct drm_nouveau_private *dev_priv) | |
123 | { | |
124 | if (dev_priv->ttm.mem_global_ref.release == NULL) | |
125 | return; | |
126 | ||
127 | ttm_global_item_unref(&dev_priv->ttm.bo_global_ref.ref); | |
128 | ttm_global_item_unref(&dev_priv->ttm.mem_global_ref); | |
129 | dev_priv->ttm.mem_global_ref.release = NULL; | |
130 | } | |
131 |