drivers/gpu/drm/i915/selftests/mock_gtt.c

   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 i915_vma *vma,
  37                                 enum i915_cache_level level, u32 flags)
  38 {
  39 }
  40
  41 static int mock_bind_ppgtt(struct i915_vma *vma,
  42                            enum i915_cache_level cache_level,
  43                            u32 flags)
  44 {
  45         GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND);
  46         vma->flags |= I915_VMA_LOCAL_BIND;
  47         return 0;
  48 }
  49
  50 static void mock_unbind_ppgtt(struct i915_vma *vma)
  51 {
  52 }
  53
  54 static void mock_cleanup(struct i915_address_space *vm)
  55 {
  56 }
  57
  58 struct i915_ppgtt *mock_ppgtt(struct drm_i915_private *i915, const char *name)
  59 {
  60         struct i915_ppgtt *ppgtt;
  61
  62         ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL);
  63         if (!ppgtt)
  64                 return NULL;
  65
  66         ppgtt->vm.i915 = i915;
  67         ppgtt->vm.total = round_down(U64_MAX, PAGE_SIZE);
  68         ppgtt->vm.file = ERR_PTR(-ENODEV);
  69
  70         i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT);
  71
  72         ppgtt->vm.clear_range = nop_clear_range;
  73         ppgtt->vm.insert_page = mock_insert_page;
  74         ppgtt->vm.insert_entries = mock_insert_entries;
  75         ppgtt->vm.cleanup = mock_cleanup;
  76
  77         ppgtt->vm.vma_ops.bind_vma    = mock_bind_ppgtt;
  78         ppgtt->vm.vma_ops.unbind_vma  = mock_unbind_ppgtt;
  79         ppgtt->vm.vma_ops.set_pages   = ppgtt_set_pages;
  80         ppgtt->vm.vma_ops.clear_pages = clear_pages;
  81
  82         return ppgtt;
  83 }
  84
  85 static int mock_bind_ggtt(struct i915_vma *vma,
  86                           enum i915_cache_level cache_level,
  87                           u32 flags)
  88 {
  89         vma->flags |= I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND;
  90         return 0;
  91 }
  92
  93 static void mock_unbind_ggtt(struct i915_vma *vma)
  94 {
  95 }
  96
  97 void mock_init_ggtt(struct drm_i915_private *i915, struct i915_ggtt *ggtt)
  98 {
  99         memset(ggtt, 0, sizeof(*ggtt));
 100
 101         ggtt->vm.gt = &i915->gt;
 102         ggtt->vm.i915 = i915;
 103         ggtt->vm.is_ggtt = true;
 104
 105         ggtt->gmadr = (struct resource) DEFINE_RES_MEM(0, 2048 * PAGE_SIZE);
 106         ggtt->mappable_end = resource_size(&ggtt->gmadr);
 107         ggtt->vm.total = 4096 * PAGE_SIZE;
 108
 109         ggtt->vm.clear_range = nop_clear_range;
 110         ggtt->vm.insert_page = mock_insert_page;
 111         ggtt->vm.insert_entries = mock_insert_entries;
 112         ggtt->vm.cleanup = mock_cleanup;
 113
 114         ggtt->vm.vma_ops.bind_vma    = mock_bind_ggtt;
 115         ggtt->vm.vma_ops.unbind_vma  = mock_unbind_ggtt;
 116         ggtt->vm.vma_ops.set_pages   = ggtt_set_pages;
 117         ggtt->vm.vma_ops.clear_pages = clear_pages;
 118
 119         i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT);
 120
 121         intel_gt_init_hw(i915);
 122 }
 123
 124 void mock_fini_ggtt(struct i915_ggtt *ggtt)
 125 {
 126         i915_address_space_fini(&ggtt->vm);
 127 }