projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| 29 | #include "ttm_bo_driver.h" | |
| 30 | #include "ttm_memory.h" | |
| 31 | ||
| 32 | /** | |
| 33 | * Get count number of pages from pool to pages list. | |
| 34 | * | |
| 0d74f86f | 35 | * @pages: head of empty linked list where pages are filled. |
| 1403b1a3 PN |
36 | * @flags: ttm flags for page allocation. |
| 37 | * @cstate: ttm caching state for the page. | |
| 38 | * @count: number of pages to allocate. | |
| f9820a46 | 39 | * @dma_address: The DMA (bus) address of pages (if TTM_PAGE_FLAG_DMA32 set). |
| 1403b1a3 | 40 | */ |
| 822c4d9a | 41 | int ttm_get_pages(struct page **pages, |
| 1403b1a3 PN |
42 | int flags, |
| 43 | enum ttm_caching_state cstate, | |
| 822c4d9a | 44 | unsigned npages, |
| a2c06ee2 | 45 | dma_addr_t *dma_address); |
| 1403b1a3 PN |
46 | /** |
| 47 | * Put linked list of pages to pool. | |
| 48 | * | |
| 49 | * @pages: list of pages to free. | |
| 50 | * @page_count: number of pages in the list. Zero can be passed for unknown | |
| 51 | * count. | |
| 52 | * @flags: ttm flags for page allocation. | |
| 53 | * @cstate: ttm caching state. | |
| f9820a46 | 54 | * @dma_address: The DMA (bus) address of pages (if TTM_PAGE_FLAG_DMA32 set). |
| 1403b1a3 | 55 | */ |
| 822c4d9a JG |
56 | void ttm_put_pages(struct page **pages, |
| 57 | unsigned npages, | |
| 1403b1a3 | 58 | int flags, |
| f9820a46 | 59 | enum ttm_caching_state cstate, |
| a2c06ee2 | 60 | dma_addr_t *dma_address); |
| 1403b1a3 PN |
61 | /** |
| 62 | * Initialize pool allocator. | |
| 1403b1a3 | 63 | */ |
| c96af79e | 64 | int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); |
| 1403b1a3 PN |
65 | /** |
| 66 | * Free pool allocator. | |
| 67 | */ | |
| 68 | void ttm_page_alloc_fini(void); | |
| 69 | ||
| b1e5f172 JG |
70 | /** |
| 71 | * ttm_pool_populate: | |
| 72 | * | |
| 73 | * @ttm: The struct ttm_tt to contain the backing pages. | |
| 74 | * | |
| 75 | * Add backing pages to all of @ttm | |
| 76 | */ | |
| 77 | extern int ttm_pool_populate(struct ttm_tt *ttm); | |
| 78 | ||
| 79 | /** | |
| 80 | * ttm_pool_unpopulate: | |
| 81 | * | |
| 82 | * @ttm: The struct ttm_tt which to free backing pages. | |
| 83 | * | |
| 84 | * Free all pages of @ttm | |
| 85 | */ | |
| 86 | extern void ttm_pool_unpopulate(struct ttm_tt *ttm); | |
| 87 | ||
| 07458661 PN |
88 | /** |
| 89 | * Output the state of pools to debugfs file | |
| 90 | */ | |
| 91 | extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data); | |
| 1403b1a3 | 92 | #endif |