1/* $NetBSD: mock_gtt.c,v 1.2 2021/12/18 23:45:31 riastradh Exp $ */ 2 3/* 4 * Copyright �� 2016 Intel Corporation 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 23 * IN THE SOFTWARE. 24 * 25 */ 26 27#include <sys/cdefs.h> 28__KERNEL_RCSID(0, "$NetBSD: mock_gtt.c,v 1.2 2021/12/18 23:45:31 riastradh Exp $"); 29 30#include "mock_gtt.h" 31 32static void mock_insert_page(struct i915_address_space *vm, 33 dma_addr_t addr, 34 u64 offset, 35 enum i915_cache_level level, 36 u32 flags) 37{ 38} 39 40static void mock_insert_entries(struct i915_address_space *vm, 41 struct i915_vma *vma, 42 enum i915_cache_level level, u32 flags) 43{ 44} 45 46static int mock_bind_ppgtt(struct i915_vma *vma, 47 enum i915_cache_level cache_level, 48 u32 flags) 49{ 50 GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND); 51 set_bit(I915_VMA_LOCAL_BIND_BIT, __i915_vma_flags(vma)); 52 return 0; 53} 54 55static void mock_unbind_ppgtt(struct i915_vma *vma) 56{ 57} 58 59static void mock_cleanup(struct i915_address_space *vm) 60{ 61} 62 63static void mock_clear_range(struct i915_address_space *vm, 64 u64 start, u64 length) 65{ 66} 67 68struct i915_ppgtt *mock_ppgtt(struct drm_i915_private *i915, const char *name) 69{ 70 struct i915_ppgtt *ppgtt; 71 72 ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL); 73 if (!ppgtt) 74 return NULL; 75 76 ppgtt->vm.gt = &i915->gt; 77 ppgtt->vm.i915 = i915; 78 ppgtt->vm.total = round_down(U64_MAX, PAGE_SIZE); 79 ppgtt->vm.file = ERR_PTR(-ENODEV); 80 81 i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT); 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 ppgtt->vm.vma_ops.set_pages = ppgtt_set_pages; 91 ppgtt->vm.vma_ops.clear_pages = clear_pages; 92 93 return ppgtt; 94} 95 96static int mock_bind_ggtt(struct i915_vma *vma, 97 enum i915_cache_level cache_level, 98 u32 flags) 99{ 100 atomic_or(I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND, &vma->flags); 101 return 0; 102} 103 104static void mock_unbind_ggtt(struct i915_vma *vma) 105{ 106} 107 108void mock_init_ggtt(struct drm_i915_private *i915, struct i915_ggtt *ggtt) 109{ 110 memset(ggtt, 0, sizeof(*ggtt)); 111 112 ggtt->vm.gt = &i915->gt; 113 ggtt->vm.i915 = i915; 114 ggtt->vm.is_ggtt = true; 115 116 ggtt->gmadr = (struct resource) DEFINE_RES_MEM(0, 2048 * PAGE_SIZE); 117 ggtt->mappable_end = resource_size(&ggtt->gmadr); 118 ggtt->vm.total = 4096 * PAGE_SIZE; 119 120 ggtt->vm.clear_range = mock_clear_range; 121 ggtt->vm.insert_page = mock_insert_page; 122 ggtt->vm.insert_entries = mock_insert_entries; 123 ggtt->vm.cleanup = mock_cleanup; 124 125 ggtt->vm.vma_ops.bind_vma = mock_bind_ggtt; 126 ggtt->vm.vma_ops.unbind_vma = mock_unbind_ggtt; 127 ggtt->vm.vma_ops.set_pages = ggtt_set_pages; 128 ggtt->vm.vma_ops.clear_pages = clear_pages; 129 130 i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT); 131 i915->gt.ggtt = ggtt; 132} 133 134void mock_fini_ggtt(struct i915_ggtt *ggtt) 135{ 136 i915_address_space_fini(&ggtt->vm); 137} 138