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3391 | Serge | 1 | /* |
2 | * Copyright (c) Red Hat Inc. |
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3 | |||
4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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5 | * copy of this software and associated documentation files (the "Software"), |
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6 | * to deal in the Software without restriction, including without limitation |
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7 | * the rights to use, copy, modify, merge, publish, distribute, sub license, |
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8 | * and/or sell copies of the Software, and to permit persons to whom the |
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9 | * Software is furnished to do so, subject to the following conditions: |
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10 | * |
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11 | * The above copyright notice and this permission notice (including the |
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12 | * next paragraph) shall be included in all copies or substantial portions |
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13 | * of the Software. |
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14 | * |
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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17 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
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18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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21 | * DEALINGS IN THE SOFTWARE. |
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22 | * |
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23 | * Authors: Dave Airlie |
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24 | * Jerome Glisse |
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25 | */ |
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26 | #ifndef TTM_PAGE_ALLOC |
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27 | #define TTM_PAGE_ALLOC |
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28 | |||
29 | #include |
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30 | #include |
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31 | |||
5056 | serge | 32 | struct device; |
33 | |||
3391 | Serge | 34 | /** |
35 | * Initialize pool allocator. |
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36 | */ |
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37 | int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); |
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38 | /** |
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39 | * Free pool allocator. |
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40 | */ |
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41 | void ttm_page_alloc_fini(void); |
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42 | |||
43 | /** |
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44 | * ttm_pool_populate: |
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45 | * |
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46 | * @ttm: The struct ttm_tt to contain the backing pages. |
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47 | * |
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48 | * Add backing pages to all of @ttm |
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49 | */ |
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50 | extern int ttm_pool_populate(struct ttm_tt *ttm); |
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51 | |||
52 | /** |
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53 | * ttm_pool_unpopulate: |
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54 | * |
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55 | * @ttm: The struct ttm_tt which to free backing pages. |
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56 | * |
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57 | * Free all pages of @ttm |
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58 | */ |
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59 | extern void ttm_pool_unpopulate(struct ttm_tt *ttm); |
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60 | |||
61 | /** |
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62 | * Output the state of pools to debugfs file |
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63 | */ |
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64 | extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data); |
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65 | |||
66 | |||
4568 | Serge | 67 | #if defined(CONFIG_SWIOTLB) || defined(CONFIG_INTEL_IOMMU) |
3391 | Serge | 68 | /** |
69 | * Initialize pool allocator. |
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70 | */ |
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71 | int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); |
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72 | |||
73 | /** |
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74 | * Free pool allocator. |
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75 | */ |
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76 | void ttm_dma_page_alloc_fini(void); |
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77 | |||
78 | /** |
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79 | * Output the state of pools to debugfs file |
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80 | */ |
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81 | extern int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data); |
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82 | |||
83 | extern int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev); |
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84 | extern void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev); |
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85 | |||
86 | #else |
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87 | static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, |
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88 | unsigned max_pages) |
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89 | { |
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90 | return -ENODEV; |
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91 | } |
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92 | |||
93 | static inline void ttm_dma_page_alloc_fini(void) { return; } |
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94 | |||
95 | static inline int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data) |
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96 | { |
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97 | return 0; |
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98 | } |
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4568 | Serge | 99 | static inline int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, |
100 | struct device *dev) |
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101 | { |
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102 | return -ENOMEM; |
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103 | } |
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104 | static inline void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, |
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105 | struct device *dev) |
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106 | { |
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107 | } |
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3391 | Serge | 108 | #endif |
109 | |||
110 | #endif |