[go: nahoru, domu]
1/**************************************************************************
2 *
3 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * 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
28#include <drm/drmP.h>
29#include "vmwgfx_drv.h"
30
31int vmw_mmap(struct file *filp, struct vm_area_struct *vma)
32{
33	struct drm_file *file_priv;
34	struct vmw_private *dev_priv;
35
36	if (unlikely(vma->vm_pgoff < VMWGFX_FILE_PAGE_OFFSET)) {
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
46static 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
52static void vmw_ttm_mem_global_release(struct drm_global_reference *ref)
53{
54	ttm_mem_global_release(ref->object);
55}
56
57int vmw_ttm_global_init(struct vmw_private *dev_priv)
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;
89out_no_bo:
90	drm_global_item_unref(&dev_priv->mem_global_ref);
91	return ret;
92}
93
94void vmw_ttm_global_release(struct vmw_private *dev_priv)
95{
96	drm_global_item_unref(&dev_priv->bo_global_ref.ref);
97	drm_global_item_unref(&dev_priv->mem_global_ref);
98}
99