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4075 | Serge | 1 | /************************************************************************** |
2 | * |
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3 | * Copyright (c) 2006-2009 VMware, Inc., Palo Alto, CA., USA |
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4 | * All Rights Reserved. |
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5 | * |
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6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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7 | * copy of this software and associated documentation files (the |
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8 | * "Software"), to deal in the Software without restriction, including |
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9 | * without limitation the rights to use, copy, modify, merge, publish, |
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10 | * distribute, sub license, and/or sell copies of the Software, and to |
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11 | * permit persons to whom the Software is furnished to do so, subject to |
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12 | * the following conditions: |
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13 | * |
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14 | * The above copyright notice and this permission notice (including the |
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15 | * next paragraph) shall be included in all copies or substantial portions |
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16 | * of the Software. |
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17 | * |
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18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
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21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
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22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
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24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
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25 | * |
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26 | **************************************************************************/ |
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27 | |||
28 | #define pr_fmt(fmt) "[TTM] " fmt |
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29 | |||
30 | #include |
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31 | #include |
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32 | #include |
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33 | #include |
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34 | #include |
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35 | #include |
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36 | #include |
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37 | #include |
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38 | #include |
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39 | |||
40 | |||
41 | |||
5078 | serge | 42 | int ttm_mem_global_init(struct ttm_mem_global *glob) |
4075 | Serge | 43 | { |
44 | int ret; |
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5078 | serge | 45 | int i; |
4075 | Serge | 46 | |
5078 | serge | 47 | spin_lock_init(&glob->lock); |
4075 | Serge | 48 | |
49 | |||
50 | |||
5078 | serge | 51 | ttm_page_alloc_init(glob, 4*1024); |
4075 | Serge | 52 | |
53 | return 0; |
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5078 | serge | 54 | out_no_zone: |
55 | ttm_mem_global_release(glob); |
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56 | return ret; |
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4075 | Serge | 57 | } |
5078 | serge | 58 | EXPORT_SYMBOL(ttm_mem_global_init); |
4075 | Serge | 59 | |
60 | void ttm_mem_global_release(struct ttm_mem_global *glob) |
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61 | { |
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62 | unsigned int i; |
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63 | |||
64 | /* let the page allocator first stop the shrink work. */ |
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5078 | serge | 65 | // ttm_page_alloc_fini(); |
66 | // ttm_dma_page_alloc_fini(); |
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4075 | Serge | 67 | |
5078 | serge | 68 | |
4075 | Serge | 69 | } |
70 | EXPORT_SYMBOL(ttm_mem_global_release); |
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71 | |||
72 | |||
73 | |||
74 | size_t ttm_round_pot(size_t size) |
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75 | { |
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76 | if ((size & (size - 1)) == 0) |
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77 | return size; |
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78 | else if (size > PAGE_SIZE) |
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79 | return PAGE_ALIGN(size); |
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80 | else { |
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81 | size_t tmp_size = 4; |
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82 | |||
83 | while (tmp_size < size) |
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84 | tmp_size <<= 1; |
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85 | |||
86 | return tmp_size; |
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87 | } |
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88 | return 0; |
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89 | } |
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90 | EXPORT_SYMBOL(ttm_round_pot);=><=>> |