Linux Kernel  3.7.1
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vmwgfx_ttm_glue.c
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1 /**************************************************************************
2  *
3  * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
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6  * Permission is hereby granted, free of charge, to any person obtaining a
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11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
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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.
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27 
28 #include <drm/drmP.h>
29 #include "vmwgfx_drv.h"
30 
31 int vmw_mmap(struct file *filp, struct vm_area_struct *vma)
32 {
33  struct drm_file *file_priv;
34  struct vmw_private *dev_priv;
35 
37  DRM_ERROR("Illegal attempt to mmap old fifo space.\n");
38  return -EINVAL;
39  }
40 
41  file_priv = filp->private_data;
42  dev_priv = vmw_priv(file_priv->minor->dev);
43  return ttm_bo_mmap(filp, vma, &dev_priv->bdev);
44 }
45 
46 static int vmw_ttm_mem_global_init(struct drm_global_reference *ref)
47 {
48  DRM_INFO("global init.\n");
49  return ttm_mem_global_init(ref->object);
50 }
51 
52 static void vmw_ttm_mem_global_release(struct drm_global_reference *ref)
53 {
55 }
56 
58 {
59  struct drm_global_reference *global_ref;
60  int ret;
61 
62  global_ref = &dev_priv->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 = &vmw_ttm_mem_global_init;
66  global_ref->release = &vmw_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  return ret;
72  }
73 
74  dev_priv->bo_global_ref.mem_glob =
75  dev_priv->mem_global_ref.object;
76  global_ref = &dev_priv->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  ret = drm_global_item_ref(global_ref);
82 
83  if (unlikely(ret != 0)) {
84  DRM_ERROR("Failed setting up TTM buffer objects.\n");
85  goto out_no_bo;
86  }
87 
88  return 0;
89 out_no_bo:
91  return ret;
92 }
93 
95 {
96  drm_global_item_unref(&dev_priv->bo_global_ref.ref);
98 }