tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 static const struct vm_operations_struct vmw_vm_ops = {
33 .pfn_mkwrite = vmw_bo_vm_mkwrite,
34 .page_mkwrite = vmw_bo_vm_mkwrite,
35 .fault = vmw_bo_vm_fault,
36 .open = ttm_bo_vm_open,
37 .close = ttm_bo_vm_close
38 };
39 struct drm_file *file_priv = filp->private_data;
40 struct vmw_private *dev_priv = vmw_priv(file_priv->minor->dev);
41 int ret = ttm_bo_mmap(filp, vma, &dev_priv->bdev);
42
43 if (ret)
44 return ret;
45
46 vma->vm_ops = &vmw_vm_ops;
47
48 return 0;
49}
50
51/* struct vmw_validation_mem callback */
52static int vmw_vmt_reserve(struct vmw_validation_mem *m, size_t size)
53{
54 static struct ttm_operation_ctx ctx = {.interruptible = false,
55 .no_wait_gpu = false};
56 struct vmw_private *dev_priv = container_of(m, struct vmw_private, vvm);
57
58 return ttm_mem_global_alloc(vmw_mem_glob(dev_priv), size, &ctx);
59}
60
61/* struct vmw_validation_mem callback */
62static void vmw_vmt_unreserve(struct vmw_validation_mem *m, size_t size)
63{
64 struct vmw_private *dev_priv = container_of(m, struct vmw_private, vvm);
65
66 return ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
67}
68
69/**
70 * vmw_validation_mem_init_ttm - Interface the validation memory tracker
71 * to ttm.
72 * @dev_priv: Pointer to struct vmw_private. The reason we choose a vmw private
73 * rather than a struct vmw_validation_mem is to make sure assumption in the
74 * callbacks that struct vmw_private derives from struct vmw_validation_mem
75 * holds true.
76 * @gran: The recommended allocation granularity
77 */
78void vmw_validation_mem_init_ttm(struct vmw_private *dev_priv, size_t gran)
79{
80 struct vmw_validation_mem *vvm = &dev_priv->vvm;
81
82 vvm->reserve_mem = vmw_vmt_reserve;
83 vvm->unreserve_mem = vmw_vmt_unreserve;
84 vvm->gran = gran;
85}