1/*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 2015 LunarG, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 *    Chia-I Wu <olv@lunarg.com>
26 */
27
28#ifndef ILO_VMA_H
29#define ILO_VMA_H
30
31#include "ilo_core.h"
32#include "ilo_debug.h"
33#include "ilo_dev.h"
34
35struct intel_bo;
36
37/**
38 * A virtual memory area.
39 */
40struct ilo_vma {
41   /* address space */
42   uint32_t vm_size;
43   uint32_t vm_alignment;
44
45   /* backing storage */
46   struct intel_bo *bo;
47   uint32_t bo_offset;
48};
49
50static inline bool
51ilo_vma_init(struct ilo_vma *vma, const struct ilo_dev *dev,
52             uint32_t size, uint32_t alignment)
53{
54   assert(ilo_is_zeroed(vma, sizeof(*vma)));
55   assert(size && alignment);
56
57   vma->vm_alignment = alignment;
58   vma->vm_size = size;
59
60   return true;
61}
62
63static inline void
64ilo_vma_set_bo(struct ilo_vma *vma, const struct ilo_dev *dev,
65               struct intel_bo *bo, uint32_t offset)
66{
67   assert(offset % vma->vm_alignment == 0);
68
69   vma->bo = bo;
70   vma->bo_offset = offset;
71}
72
73#endif /* ILO_VMA_H */
74