1// SPDX-License-Identifier: GPL-2.0 OR MIT
 2/**************************************************************************
 3 *
 4 * Copyright 2009-2011 VMware, Inc., Palo Alto, CA., USA
 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 "vmwgfx_drv.h"
29
30int vmw_mmap(struct file *filp, struct vm_area_struct *vma)
31{
32	struct drm_file *file_priv = filp->private_data;
33	struct vmw_private *dev_priv = vmw_priv(file_priv->minor->dev);
34
35	return ttm_bo_mmap(filp, vma, &dev_priv->bdev);
36}
37
38/* struct vmw_validation_mem callback */
39static int vmw_vmt_reserve(struct vmw_validation_mem *m, size_t size)
40{
41	static struct ttm_operation_ctx ctx = {.interruptible = false,
42					       .no_wait_gpu = false};
43	struct vmw_private *dev_priv = container_of(m, struct vmw_private, vvm);
44
45	return ttm_mem_global_alloc(vmw_mem_glob(dev_priv), size, &ctx);
46}
47
48/* struct vmw_validation_mem callback */
49static void vmw_vmt_unreserve(struct vmw_validation_mem *m, size_t size)
50{
51	struct vmw_private *dev_priv = container_of(m, struct vmw_private, vvm);
52
53	return ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
54}
55
56/**
57 * vmw_validation_mem_init_ttm - Interface the validation memory tracker
58 * to ttm.
59 * @dev_priv: Pointer to struct vmw_private. The reason we choose a vmw private
60 * rather than a struct vmw_validation_mem is to make sure assumption in the
61 * callbacks that struct vmw_private derives from struct vmw_validation_mem
62 * holds true.
63 * @gran: The recommended allocation granularity
64 */
65void vmw_validation_mem_init_ttm(struct vmw_private *dev_priv, size_t gran)
66{
67	struct vmw_validation_mem *vvm = &dev_priv->vvm;
68
69	vvm->reserve_mem = vmw_vmt_reserve;
70	vvm->unreserve_mem = vmw_vmt_unreserve;
71	vvm->gran = gran;
72}