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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 | */ | |
50 | extern int ttm_pool_populate(struct ttm_tt *ttm); | |
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 | */ | |
59 | extern void ttm_pool_unpopulate(struct ttm_tt *ttm); | |
60 | ||
07458661 PN |
61 | /** |
62 | * Output the state of pools to debugfs file | |
63 | */ | |
64 | extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data); | |
2334b75f KRW |
65 | |
66 | ||
7aeb7448 | 67 | #if defined(CONFIG_SWIOTLB) || defined(CONFIG_INTEL_IOMMU) |
2334b75f KRW |
68 | /** |
69 | * Initialize pool allocator. | |
70 | */ | |
71 | int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); | |
72 | ||
73 | /** | |
74 | * Free pool allocator. | |
75 | */ | |
76 | void ttm_dma_page_alloc_fini(void); | |
77 | ||
78 | /** | |
79 | * Output the state of pools to debugfs file | |
80 | */ | |
81 | extern int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data); | |
82 | ||
8e7e7052 JG |
83 | extern int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev); |
84 | extern void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev); | |
2334b75f KRW |
85 | |
86 | #else | |
87 | static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, | |
88 | unsigned max_pages) | |
89 | { | |
90 | return -ENODEV; | |
91 | } | |
92 | ||
93 | static inline void ttm_dma_page_alloc_fini(void) { return; } | |
94 | ||
95 | static inline int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data) | |
96 | { | |
97 | return 0; | |
98 | } | |
7aeb7448 TH |
99 | static inline int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, |
100 | struct device *dev) | |
101 | { | |
102 | return -ENOMEM; | |
103 | } | |
104 | static inline void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, | |
105 | struct device *dev) | |
106 | { | |
107 | } | |
2334b75f KRW |
108 | #endif |
109 | ||
1403b1a3 | 110 | #endif |