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
35 struct intel_bo;
36
37 /**
38 * A virtual memory area.
39 */
40 struct 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
50 static inline bool
ilo_vma_init(struct ilo_vma * vma,const struct ilo_dev * dev,uint32_t size,uint32_t alignment)51 ilo_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
63 static inline void
ilo_vma_set_bo(struct ilo_vma * vma,const struct ilo_dev * dev,struct intel_bo * bo,uint32_t offset)64 ilo_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