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                              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 }