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 /* $FreeBSD$ */ 27 #ifndef TTM_PAGE_ALLOC 28 #define TTM_PAGE_ALLOC 29 30 #include <dev/drm2/ttm/ttm_bo_driver.h> 31 #include <dev/drm2/ttm/ttm_memory.h> 32 33 /** 34 * Initialize pool allocator. 35 */ 36 int ttm_page_alloc_init(struct ttm_mem_global *glob, unsigned max_pages); 37 /** 38 * Free pool allocator. 39 */ 40 void ttm_page_alloc_fini(void); 41 42 /** 43 * ttm_pool_populate: 44 * 45 * @ttm: The struct ttm_tt to contain the backing pages. 46 * 47 * Add backing pages to all of @ttm 48 */ 49 extern int ttm_pool_populate(struct ttm_tt *ttm); 50 51 /** 52 * ttm_pool_unpopulate: 53 * 54 * @ttm: The struct ttm_tt which to free backing pages. 55 * 56 * Free all pages of @ttm 57 */ 58 extern void ttm_pool_unpopulate(struct ttm_tt *ttm); 59 60 /** 61 * Output the state of pools to debugfs file 62 */ 63 /* XXXKIB 64 extern int ttm_page_alloc_debugfs(struct seq_file *m, void *data); 65 */ 66 67 #ifdef CONFIG_SWIOTLB 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 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); 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 /* XXXKIB 96 static inline int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data) 97 { 98 return 0; 99 } 100 */ 101 #endif 102 103 #endif 104