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, place->mem_type); 34 35 res->mm_node = NULL; 36 res->start = 0; 37 res->num_pages = PFN_UP(bo->base.size); 38 res->mem_type = place->mem_type; 39 res->placement = place->flags; 40 res->bus.addr = NULL; 41 res->bus.offset = 0; 42 res->bus.is_iomem = false; 43 res->bus.caching = ttm_cached; 44 45 return man->func->alloc(man, bo, place, res); 46 } 47 48 void ttm_resource_free(struct ttm_buffer_object *bo, struct ttm_resource *res) 49 { 50 struct ttm_resource_manager *man = 51 ttm_manager_type(bo->bdev, res->mem_type); 52 53 man->func->free(man, res); 54 res->mm_node = NULL; 55 res->mem_type = TTM_PL_SYSTEM; 56 } 57 EXPORT_SYMBOL(ttm_resource_free); 58 59 /** 60 * ttm_resource_manager_init 61 * 62 * @man: memory manager object to init 63 * @p_size: size managed area in pages. 64 * 65 * Initialise core parts of a manager object. 66 */ 67 void ttm_resource_manager_init(struct ttm_resource_manager *man, 68 unsigned long p_size) 69 { 70 unsigned i; 71 72 spin_lock_init(&man->move_lock); 73 man->size = p_size; 74 75 for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) 76 INIT_LIST_HEAD(&man->lru[i]); 77 man->move = NULL; 78 } 79 EXPORT_SYMBOL(ttm_resource_manager_init); 80 81 /* 82 * ttm_resource_manager_evict_all 83 * 84 * @bdev - device to use 85 * @man - manager to use 86 * 87 * Evict all the objects out of a memory manager until it is empty. 88 * Part of memory manager cleanup sequence. 89 */ 90 int ttm_resource_manager_evict_all(struct ttm_device *bdev, 91 struct ttm_resource_manager *man) 92 { 93 struct ttm_operation_ctx ctx = { 94 .interruptible = false, 95 .no_wait_gpu = false, 96 .force_alloc = true 97 }; 98 struct dma_fence *fence; 99 int ret; 100 unsigned i; 101 102 /* 103 * Can't use standard list traversal since we're unlocking. 104 */ 105 106 spin_lock(&bdev->lru_lock); 107 for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) { 108 while (!list_empty(&man->lru[i])) { 109 spin_unlock(&bdev->lru_lock); 110 ret = ttm_mem_evict_first(bdev, man, NULL, &ctx, 111 NULL); 112 if (ret) 113 return ret; 114 spin_lock(&bdev->lru_lock); 115 } 116 } 117 spin_unlock(&bdev->lru_lock); 118 119 spin_lock(&man->move_lock); 120 fence = dma_fence_get(man->move); 121 spin_unlock(&man->move_lock); 122 123 if (fence) { 124 ret = dma_fence_wait(fence, false); 125 dma_fence_put(fence); 126 if (ret) 127 return ret; 128 } 129 130 return 0; 131 } 132 EXPORT_SYMBOL(ttm_resource_manager_evict_all); 133 134 /** 135 * ttm_resource_manager_debug 136 * 137 * @man: manager type to dump. 138 * @p: printer to use for debug. 139 */ 140 void ttm_resource_manager_debug(struct ttm_resource_manager *man, 141 struct drm_printer *p) 142 { 143 drm_printf(p, " use_type: %d\n", man->use_type); 144 drm_printf(p, " use_tt: %d\n", man->use_tt); 145 drm_printf(p, " size: %llu\n", man->size); 146 if (man->func->debug) 147 man->func->debug(man, p); 148 } 149 EXPORT_SYMBOL(ttm_resource_manager_debug); 150