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/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c

https://bitbucket.org/ndreys/linux-sunxi
C | 99 lines | 60 code | 13 blank | 26 comment | 7 complexity | 4cc9588db1d2c86f8fefff6810cf6ce4 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1/**************************************************************************
 2 *
 3 * Copyright Š 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 "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		if (vmw_fifo_mmap(filp, vma) == 0)
38			return 0;
39		return drm_mmap(filp, vma);
40	}
41
42	file_priv = filp->private_data;
43	dev_priv = vmw_priv(file_priv->minor->dev);
44	return ttm_bo_mmap(filp, vma, &dev_priv->bdev);
45}
46
47static int vmw_ttm_mem_global_init(struct drm_global_reference *ref)
48{
49	DRM_INFO("global init.\n");
50	return ttm_mem_global_init(ref->object);
51}
52
53static void vmw_ttm_mem_global_release(struct drm_global_reference *ref)
54{
55	ttm_mem_global_release(ref->object);
56}
57
58int vmw_ttm_global_init(struct vmw_private *dev_priv)
59{
60	struct drm_global_reference *global_ref;
61	int ret;
62
63	global_ref = &dev_priv->mem_global_ref;
64	global_ref->global_type = DRM_GLOBAL_TTM_MEM;
65	global_ref->size = sizeof(struct ttm_mem_global);
66	global_ref->init = &vmw_ttm_mem_global_init;
67	global_ref->release = &vmw_ttm_mem_global_release;
68
69	ret = drm_global_item_ref(global_ref);
70	if (unlikely(ret != 0)) {
71		DRM_ERROR("Failed setting up TTM memory accounting.\n");
72		return ret;
73	}
74
75	dev_priv->bo_global_ref.mem_glob =
76		dev_priv->mem_global_ref.object;
77	global_ref = &dev_priv->bo_global_ref.ref;
78	global_ref->global_type = DRM_GLOBAL_TTM_BO;
79	global_ref->size = sizeof(struct ttm_bo_global);
80	global_ref->init = &ttm_bo_global_init;
81	global_ref->release = &ttm_bo_global_release;
82	ret = drm_global_item_ref(global_ref);
83
84	if (unlikely(ret != 0)) {
85		DRM_ERROR("Failed setting up TTM buffer objects.\n");
86		goto out_no_bo;
87	}
88
89	return 0;
90out_no_bo:
91	drm_global_item_unref(&dev_priv->mem_global_ref);
92	return ret;
93}
94
95void vmw_ttm_global_release(struct vmw_private *dev_priv)
96{
97	drm_global_item_unref(&dev_priv->bo_global_ref.ref);
98	drm_global_item_unref(&dev_priv->mem_global_ref);
99}