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1403b1a3 PN |
1 | /* |
2 | * Copyright (c) Red Hat Inc. | |
3 | ||
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sub license, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the | |
12 | * next paragraph) shall be included in all copies or substantial portions | |
13 | * of the Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: Dave Airlie <airlied@redhat.com> | |
24 | * Jerome Glisse <jglisse@redhat.com> | |
25 | */ | |
26 | #ifndef TTM_PAGE_ALLOC | |
27 | #define TTM_PAGE_ALLOC | |
28 | ||
a1ce3928 DH |
29 | #include <drm/ttm/ttm_bo_driver.h> |
30 | #include <drm/ttm/ttm_memory.h> | |
1403b1a3 | 31 | |
728a0cdf AC |
32 | struct device; |
33 | ||
1403b1a3 PN |
34 | /** |
35 | * Initialize pool allocator. | |
1403b1a3 | 36 | */ |
c96af79e | 37 | int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); |
1403b1a3 PN |
38 | /** |
39 | * Free pool allocator. | |
40 | */ | |
41 | void ttm_page_alloc_fini(void); | |
42 | ||
b1e5f172 JG |
43 | /** |
44 | * ttm_pool_populate: | |
45 | * | |
46 | * @ttm: The struct ttm_tt to contain the backing pages. | |
47 | * | |
48 | * Add backing pages to all of @ttm | |
49 | */ | |
96bec198 | 50 | int ttm_pool_populate(struct ttm_tt *ttm); |
b1e5f172 JG |
51 | |
52 | /** | |
53 | * ttm_pool_unpopulate: | |
54 | * | |
55 | * @ttm: The struct ttm_tt which to free backing pages. | |
56 | * | |
57 | * Free all pages of @ttm | |
58 | */ | |
96bec198 | 59 | void ttm_pool_unpopulate(struct ttm_tt *ttm); |
b1e5f172 | 60 | |
1569d651 CK |
61 | /** |
62 | * Populates and DMA maps pages to fullfil a ttm_dma_populate() request | |
63 | */ | |
64 | int ttm_populate_and_map_pages(struct device *dev, struct ttm_dma_tt *tt); | |
65 | ||
66 | /** | |
67 | * Unpopulates and DMA unmaps pages as part of a | |
68 | * ttm_dma_unpopulate() request */ | |
69 | void ttm_unmap_and_unpopulate_pages(struct device *dev, struct ttm_dma_tt *tt); | |
70 | ||
07458661 PN |
71 | /** |
72 | * Output the state of pools to debugfs file | |
73 | */ | |
96bec198 | 74 | int ttm_page_alloc_debugfs(struct seq_file *m, void *data); |
2334b75f | 75 | |
7aeb7448 | 76 | #if defined(CONFIG_SWIOTLB) || defined(CONFIG_INTEL_IOMMU) |
2334b75f KRW |
77 | /** |
78 | * Initialize pool allocator. | |
79 | */ | |
80 | int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); | |
81 | ||
82 | /** | |
83 | * Free pool allocator. | |
84 | */ | |
85 | void ttm_dma_page_alloc_fini(void); | |
86 | ||
87 | /** | |
88 | * Output the state of pools to debugfs file | |
89 | */ | |
96bec198 | 90 | int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data); |
2334b75f | 91 | |
96bec198 TSD |
92 | int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev); |
93 | void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev); | |
2334b75f KRW |
94 | |
95 | #else | |
96 | static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, | |
97 | unsigned max_pages) | |
98 | { | |
99 | return -ENODEV; | |
100 | } | |
101 | ||
102 | static inline void ttm_dma_page_alloc_fini(void) { return; } | |
103 | ||
104 | static inline int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data) | |
105 | { | |
106 | return 0; | |
107 | } | |
7aeb7448 TH |
108 | static inline int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, |
109 | struct device *dev) | |
110 | { | |
111 | return -ENOMEM; | |
112 | } | |
113 | static inline void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, | |
114 | struct device *dev) | |
115 | { | |
116 | } | |
2334b75f KRW |
117 | #endif |
118 | ||
1403b1a3 | 119 | #endif |