1 /* 2 * Copyright © 2016 Intel Corporation 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 (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * 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 NONINFRINGEMENT. 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 DEALINGS 21 * IN THE SOFTWARE. 22 * 23 */ 24 25 #include "mock_gtt.h" 26 27 static void mock_insert_page(struct i915_address_space *vm, 28 dma_addr_t addr, 29 u64 offset, 30 enum i915_cache_level level, 31 u32 flags) 32 { 33 } 34 35 static void mock_insert_entries(struct i915_address_space *vm, 36 struct sg_table *st, 37 u64 start, 38 enum i915_cache_level level, u32 flags) 39 { 40 } 41 42 static int mock_bind_ppgtt(struct i915_vma *vma, 43 enum i915_cache_level cache_level, 44 u32 flags) 45 { 46 GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND); 47 vma->pages = vma->obj->mm.pages; 48 vma->flags |= I915_VMA_LOCAL_BIND; 49 return 0; 50 } 51 52 static void mock_unbind_ppgtt(struct i915_vma *vma) 53 { 54 } 55 56 static void mock_cleanup(struct i915_address_space *vm) 57 { 58 } 59 60 struct i915_hw_ppgtt * 61 mock_ppgtt(struct drm_i915_private *i915, 62 const char *name) 63 { 64 struct i915_hw_ppgtt *ppgtt; 65 66 ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL); 67 if (!ppgtt) 68 return NULL; 69 70 kref_init(&ppgtt->ref); 71 ppgtt->base.i915 = i915; 72 ppgtt->base.total = round_down(U64_MAX, PAGE_SIZE); 73 ppgtt->base.file = ERR_PTR(-ENODEV); 74 75 INIT_LIST_HEAD(&ppgtt->base.active_list); 76 INIT_LIST_HEAD(&ppgtt->base.inactive_list); 77 INIT_LIST_HEAD(&ppgtt->base.unbound_list); 78 79 INIT_LIST_HEAD(&ppgtt->base.global_link); 80 drm_mm_init(&ppgtt->base.mm, 0, ppgtt->base.total); 81 i915_gem_timeline_init(i915, &ppgtt->base.timeline, name); 82 83 ppgtt->base.clear_range = nop_clear_range; 84 ppgtt->base.insert_page = mock_insert_page; 85 ppgtt->base.insert_entries = mock_insert_entries; 86 ppgtt->base.bind_vma = mock_bind_ppgtt; 87 ppgtt->base.unbind_vma = mock_unbind_ppgtt; 88 ppgtt->base.cleanup = mock_cleanup; 89 90 return ppgtt; 91 } 92 93 static int mock_bind_ggtt(struct i915_vma *vma, 94 enum i915_cache_level cache_level, 95 u32 flags) 96 { 97 int err; 98 99 err = i915_get_ggtt_vma_pages(vma); 100 if (err) 101 return err; 102 103 vma->flags |= I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND; 104 return 0; 105 } 106 107 static void mock_unbind_ggtt(struct i915_vma *vma) 108 { 109 } 110 111 void mock_init_ggtt(struct drm_i915_private *i915) 112 { 113 struct i915_ggtt *ggtt = &i915->ggtt; 114 115 INIT_LIST_HEAD(&i915->vm_list); 116 117 ggtt->base.i915 = i915; 118 119 ggtt->mappable_base = 0; 120 ggtt->mappable_end = 2048 * PAGE_SIZE; 121 ggtt->base.total = 4096 * PAGE_SIZE; 122 123 ggtt->base.clear_range = nop_clear_range; 124 ggtt->base.insert_page = mock_insert_page; 125 ggtt->base.insert_entries = mock_insert_entries; 126 ggtt->base.bind_vma = mock_bind_ggtt; 127 ggtt->base.unbind_vma = mock_unbind_ggtt; 128 ggtt->base.cleanup = mock_cleanup; 129 130 i915_address_space_init(&ggtt->base, i915, "global"); 131 } 132 133 void mock_fini_ggtt(struct drm_i915_private *i915) 134 { 135 struct i915_ggtt *ggtt = &i915->ggtt; 136 137 i915_address_space_fini(&ggtt->base); 138 } 139