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 void mock_bind_ppgtt(struct i915_address_space *vm,
  42                             struct i915_vm_pt_stash *stash,
  43                             struct i915_vma *vma,
  44                             enum i915_cache_level cache_level,
  45                             u32 flags)
  46 {
  47         GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND);
  48         set_bit(I915_VMA_LOCAL_BIND_BIT, __i915_vma_flags(vma));
  49 }
  50
  51 static void mock_unbind_ppgtt(struct i915_address_space *vm,
  52                               struct i915_vma *vma)
  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 = &i915->gt;
  74         ppgtt->vm.i915 = i915;
  75         ppgtt->vm.total = round_down(U64_MAX, PAGE_SIZE);
  76         ppgtt->vm.file = ERR_PTR(-ENODEV);
  77         ppgtt->vm.dma = &i915->drm.pdev->dev;
  78
  79         i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT);
  80
  81         ppgtt->vm.alloc_pt_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         ppgtt->vm.vma_ops.set_pages   = ppgtt_set_pages;
  91         ppgtt->vm.vma_ops.clear_pages = clear_pages;
  92
  93         return ppgtt;
  94 }
  95
  96 static void mock_bind_ggtt(struct i915_address_space *vm,
  97                            struct i915_vm_pt_stash *stash,
  98                            struct i915_vma *vma,
  99                            enum i915_cache_level cache_level,
 100                            u32 flags)
 101 {
 102 }
 103
 104 static void mock_unbind_ggtt(struct i915_address_space *vm,
 105                              struct i915_vma *vma)
 106 {
 107 }
 108
 109 void mock_init_ggtt(struct drm_i915_private *i915, struct i915_ggtt *ggtt)
 110 {
 111         memset(ggtt, 0, sizeof(*ggtt));
 112
 113         ggtt->vm.gt = &i915->gt;
 114         ggtt->vm.i915 = i915;
 115         ggtt->vm.is_ggtt = true;
 116
 117         ggtt->gmadr = (struct resource) DEFINE_RES_MEM(0, 2048 * PAGE_SIZE);
 118         ggtt->mappable_end = resource_size(&ggtt->gmadr);
 119         ggtt->vm.total = 4096 * PAGE_SIZE;
 120
 121         ggtt->vm.alloc_pt_dma = alloc_pt_dma;
 122
 123         ggtt->vm.clear_range = mock_clear_range;
 124         ggtt->vm.insert_page = mock_insert_page;
 125         ggtt->vm.insert_entries = mock_insert_entries;
 126         ggtt->vm.cleanup = mock_cleanup;
 127
 128         ggtt->vm.vma_ops.bind_vma    = mock_bind_ggtt;
 129         ggtt->vm.vma_ops.unbind_vma  = mock_unbind_ggtt;
 130         ggtt->vm.vma_ops.set_pages   = ggtt_set_pages;
 131         ggtt->vm.vma_ops.clear_pages = clear_pages;
 132
 133         i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT);
 134         i915->gt.ggtt = ggtt;
 135 }
 136
 137 void mock_fini_ggtt(struct i915_ggtt *ggtt)
 138 {
 139         i915_address_space_fini(&ggtt->vm);
 140 }