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 unsigned int pat_index, 31 u32 flags) 32 { 33 } 34 35 static void mock_insert_entries(struct i915_address_space *vm, 36 struct i915_vma_resource *vma_res, 37 unsigned int pat_index, u32 flags) 38 { 39 } 40 41 static void mock_bind_ppgtt(struct i915_address_space *vm, 42 struct i915_vm_pt_stash *stash, 43 struct i915_vma_resource *vma_res, 44 unsigned int pat_index, 45 u32 flags) 46 { 47 GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND); 48 vma_res->bound_flags |= flags; 49 } 50 51 static void mock_unbind_ppgtt(struct i915_address_space *vm, 52 struct i915_vma_resource *vma_res) 53 { 54 } 55 56 static void mock_cleanup(struct i915_address_space *vm) 57 { 58 } 59 60 static void mock_clear_range(struct i915_address_space *vm, 61 u64 start, u64 length) 62 { 63 } 64 65 struct i915_ppgtt *mock_ppgtt(struct drm_i915_private *i915, const char *name) 66 { 67 struct i915_ppgtt *ppgtt; 68 69 ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL); 70 if (!ppgtt) 71 return NULL; 72 73 ppgtt->vm.gt = to_gt(i915); 74 ppgtt->vm.i915 = i915; 75 ppgtt->vm.total = round_down(U64_MAX, PAGE_SIZE); 76 ppgtt->vm.dma = i915->drm.dev; 77 78 i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT); 79 80 ppgtt->vm.alloc_pt_dma = alloc_pt_dma; 81 ppgtt->vm.alloc_scratch_dma = alloc_pt_dma; 82 83 ppgtt->vm.clear_range = mock_clear_range; 84 ppgtt->vm.insert_page = mock_insert_page; 85 ppgtt->vm.insert_entries = mock_insert_entries; 86 ppgtt->vm.cleanup = mock_cleanup; 87 88 ppgtt->vm.vma_ops.bind_vma = mock_bind_ppgtt; 89 ppgtt->vm.vma_ops.unbind_vma = mock_unbind_ppgtt; 90 91 return ppgtt; 92 } 93 94 static void mock_bind_ggtt(struct i915_address_space *vm, 95 struct i915_vm_pt_stash *stash, 96 struct i915_vma_resource *vma_res, 97 unsigned int pat_index, 98 u32 flags) 99 { 100 } 101 102 static void mock_unbind_ggtt(struct i915_address_space *vm, 103 struct i915_vma_resource *vma_res) 104 { 105 } 106 107 void mock_init_ggtt(struct intel_gt *gt) 108 { 109 struct i915_ggtt *ggtt = gt->ggtt; 110 111 ggtt->vm.gt = gt; 112 ggtt->vm.i915 = gt->i915; 113 ggtt->vm.is_ggtt = true; 114 115 ggtt->gmadr = DEFINE_RES_MEM(0, 2048 * PAGE_SIZE); 116 ggtt->mappable_end = resource_size(&ggtt->gmadr); 117 ggtt->vm.total = 4096 * PAGE_SIZE; 118 119 ggtt->vm.alloc_pt_dma = alloc_pt_dma; 120 ggtt->vm.alloc_scratch_dma = alloc_pt_dma; 121 122 ggtt->vm.clear_range = mock_clear_range; 123 ggtt->vm.insert_page = mock_insert_page; 124 ggtt->vm.insert_entries = mock_insert_entries; 125 ggtt->vm.cleanup = mock_cleanup; 126 127 ggtt->vm.vma_ops.bind_vma = mock_bind_ggtt; 128 ggtt->vm.vma_ops.unbind_vma = mock_unbind_ggtt; 129 130 i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT); 131 } 132 133 void mock_fini_ggtt(struct i915_ggtt *ggtt) 134 { 135 i915_address_space_fini(&ggtt->vm); 136 } 137