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 int
nouveau_ttm_mmap(struct file * filp,struct vm_area_struct * vma)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;
37
38 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
39 return drm_mmap(filp, vma);
40
41 return ttm_bo_mmap(filp, vma, &dev_priv->ttm.bdev);
42 }
43
44 static int
nouveau_ttm_mem_global_init(struct drm_global_reference * ref)45 nouveau_ttm_mem_global_init(struct drm_global_reference *ref)
46 {
47 return ttm_mem_global_init(ref->object);
48 }
49
50 static void
nouveau_ttm_mem_global_release(struct drm_global_reference * ref)51 nouveau_ttm_mem_global_release(struct drm_global_reference *ref)
52 {
53 ttm_mem_global_release(ref->object);
54 }
55
56 int
nouveau_ttm_global_init(struct drm_nouveau_private * dev_priv)57 nouveau_ttm_global_init(struct drm_nouveau_private *dev_priv)
58 {
59 struct drm_global_reference *global_ref;
60 int ret;
61
62 global_ref = &dev_priv->ttm.mem_global_ref;
63 global_ref->global_type = DRM_GLOBAL_TTM_MEM;
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
68 ret = drm_global_item_ref(global_ref);
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;
77 global_ref->global_type = DRM_GLOBAL_TTM_BO;
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
82 ret = drm_global_item_ref(global_ref);
83 if (unlikely(ret != 0)) {
84 DRM_ERROR("Failed setting up TTM BO subsystem\n");
85 drm_global_item_unref(&dev_priv->ttm.mem_global_ref);
86 dev_priv->ttm.mem_global_ref.release = NULL;
87 return ret;
88 }
89
90 return 0;
91 }
92
93 void
nouveau_ttm_global_release(struct drm_nouveau_private * dev_priv)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
99 drm_global_item_unref(&dev_priv->ttm.bo_global_ref.ref);
100 drm_global_item_unref(&dev_priv->ttm.mem_global_ref);
101 dev_priv->ttm.mem_global_ref.release = NULL;
102 }
103
104