Pauli Nieminen | 1403b1a | 2010-04-01 12:44:57 +0000 | [diff] [blame] | 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 | |
| 29 | #include "ttm_bo_driver.h" |
| 30 | #include "ttm_memory.h" |
| 31 | |
| 32 | /** |
Pauli Nieminen | 1403b1a | 2010-04-01 12:44:57 +0000 | [diff] [blame] | 33 | * Initialize pool allocator. |
Pauli Nieminen | 1403b1a | 2010-04-01 12:44:57 +0000 | [diff] [blame] | 34 | */ |
Pauli Nieminen | c96af79 | 2010-04-01 12:45:03 +0000 | [diff] [blame] | 35 | int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); |
Pauli Nieminen | 1403b1a | 2010-04-01 12:44:57 +0000 | [diff] [blame] | 36 | /** |
| 37 | * Free pool allocator. |
| 38 | */ |
| 39 | void ttm_page_alloc_fini(void); |
| 40 | |
Pauli Nieminen | 0745866 | 2010-04-01 12:44:58 +0000 | [diff] [blame] | 41 | /** |
Jerome Glisse | b1e5f17 | 2011-11-02 23:59:28 -0400 | [diff] [blame] | 42 | * ttm_pool_populate: |
| 43 | * |
| 44 | * @ttm: The struct ttm_tt to contain the backing pages. |
| 45 | * |
| 46 | * Add backing pages to all of @ttm |
| 47 | */ |
| 48 | extern int ttm_pool_populate(struct ttm_tt *ttm); |
| 49 | |
| 50 | /** |
| 51 | * ttm_pool_unpopulate: |
| 52 | * |
| 53 | * @ttm: The struct ttm_tt which to free backing pages. |
| 54 | * |
| 55 | * Free all pages of @ttm |
| 56 | */ |
| 57 | extern void ttm_pool_unpopulate(struct ttm_tt *ttm); |
| 58 | |
| 59 | /** |
Pauli Nieminen | 0745866 | 2010-04-01 12:44:58 +0000 | [diff] [blame] | 60 | * Output the state of pools to debugfs file |
| 61 | */ |
| 62 | extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data); |
Konrad Rzeszutek Wilk | 2334b75 | 2011-11-03 16:46:34 -0400 | [diff] [blame] | 63 | |
| 64 | |
| 65 | #ifdef CONFIG_SWIOTLB |
| 66 | /** |
| 67 | * Initialize pool allocator. |
| 68 | */ |
| 69 | int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); |
| 70 | |
| 71 | /** |
| 72 | * Free pool allocator. |
| 73 | */ |
| 74 | void ttm_dma_page_alloc_fini(void); |
| 75 | |
| 76 | /** |
| 77 | * Output the state of pools to debugfs file |
| 78 | */ |
| 79 | extern int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data); |
| 80 | |
Jerome Glisse | 8e7e705 | 2011-11-09 17:15:26 -0500 | [diff] [blame] | 81 | extern int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev); |
| 82 | extern void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev); |
Konrad Rzeszutek Wilk | 2334b75 | 2011-11-03 16:46:34 -0400 | [diff] [blame] | 83 | |
| 84 | #else |
| 85 | static inline int ttm_dma_page_alloc_init(struct ttm_mem_global *glob, |
| 86 | unsigned max_pages) |
| 87 | { |
| 88 | return -ENODEV; |
| 89 | } |
| 90 | |
| 91 | static inline void ttm_dma_page_alloc_fini(void) { return; } |
| 92 | |
| 93 | static inline int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data) |
| 94 | { |
| 95 | return 0; |
| 96 | } |
| 97 | #endif |
| 98 | |
Pauli Nieminen | 1403b1a | 2010-04-01 12:44:57 +0000 | [diff] [blame] | 99 | #endif |