1 /* 2 * Copyright 2020 Advanced Micro Devices, 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, sublicense, 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 shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Christian König 23 */ 24 25 #include <drm/ttm/ttm_resource.h> 26 #include <drm/ttm/ttm_bo_driver.h> 27 28 int ttm_resource_alloc(struct ttm_buffer_object *bo, 29 const struct ttm_place *place, 30 struct ttm_resource *res) 31 { 32 struct ttm_resource_manager *man = 33 ttm_manager_type(bo->bdev, res->mem_type); 34 35 res->mm_node = NULL; 36 if (!man->func || !man->func->alloc) 37 return 0; 38 39 return man->func->alloc(man, bo, place, res); 40 } 41 42 void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource *res) 43 { 44 struct ttm_resource_manager *man = 45 ttm_manager_type(bo->bdev, res->mem_type); 46 47 if (man->func && man->func->free) 48 man->func->free(man, res); 49 50 res->mm_node = NULL; 51 res->mem_type = TTM_PL_SYSTEM; 52 } 53 EXPORT_SYMBOL(ttm_resource_free); 54 55 /** 56 * ttm_resource_manager_init 57 * 58 * @man: memory manager object to init 59 * @p_size: size managed area in pages. 60 * 61 * Initialise core parts of a manager object. 62 */ 63 void ttm_resource_manager_init(struct ttm_resource_manager *man, 64 unsigned long p_size) 65 { 66 unsigned i; 67 68 spin_lock_init(&man->move_lock); 69 man->size = p_size; 70 71 for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) 72 INIT_LIST_HEAD(&man->lru[i]); 73 man->move = NULL; 74 } 75 EXPORT_SYMBOL(ttm_resource_manager_init); 76 77 /* 78 * ttm_resource_manager_evict_all 79 * 80 * @bdev - device to use 81 * @man - manager to use 82 * 83 * Evict all the objects out of a memory manager until it is empty. 84 * Part of memory manager cleanup sequence. 85 */ 86 int ttm_resource_manager_evict_all(struct ttm_bo_device *bdev, 87 struct ttm_resource_manager *man) 88 { 89 struct ttm_operation_ctx ctx = { 90 .interruptible = false, 91 .no_wait_gpu = false, 92 .force_alloc = true 93 }; 94 struct ttm_bo_global *glob = &ttm_bo_glob; 95 struct dma_fence *fence; 96 int ret; 97 unsigned i; 98 99 /* 100 * Can't use standard list traversal since we're unlocking. 101 */ 102 103 spin_lock(&glob->lru_lock); 104 for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) { 105 while (!list_empty(&man->lru[i])) { 106 spin_unlock(&glob->lru_lock); 107 ret = ttm_mem_evict_first(bdev, man, NULL, &ctx, 108 NULL); 109 if (ret) 110 return ret; 111 spin_lock(&glob->lru_lock); 112 } 113 } 114 spin_unlock(&glob->lru_lock); 115 116 spin_lock(&man->move_lock); 117 fence = dma_fence_get(man->move); 118 spin_unlock(&man->move_lock); 119 120 if (fence) { 121 ret = dma_fence_wait(fence, false); 122 dma_fence_put(fence); 123 if (ret) 124 return ret; 125 } 126 127 return 0; 128 } 129 EXPORT_SYMBOL(ttm_resource_manager_evict_all); 130 131 /** 132 * ttm_resource_manager_debug 133 * 134 * @man: manager type to dump. 135 * @p: printer to use for debug. 136 */ 137 void ttm_resource_manager_debug(struct ttm_resource_manager *man, 138 struct drm_printer *p) 139 { 140 drm_printf(p, " use_type: %d\n", man->use_type); 141 drm_printf(p, " use_tt: %d\n", man->use_tt); 142 drm_printf(p, " size: %llu\n", man->size); 143 if (man->func && man->func->debug) 144 (*man->func->debug)(man, p); 145 } 146 EXPORT_SYMBOL(ttm_resource_manager_debug); 147