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->pages = vma->obj->mm.pages;
  47         vma->flags |= I915_VMA_LOCAL_BIND;
  48         return 0;
  49 }
  50
  51 static void mock_unbind_ppgtt(struct i915_vma *vma)
  52 {
  53 }
  54
  55 static void mock_cleanup(struct i915_address_space *vm)
  56 {
  57 }
  58
  59 struct i915_hw_ppgtt *
  60 mock_ppgtt(struct drm_i915_private *i915,
  61            const char *name)
  62 {
  63         struct i915_hw_ppgtt *ppgtt;
  64
  65         ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL);
  66         if (!ppgtt)
  67                 return NULL;
  68
  69         kref_init(&ppgtt->ref);
  70         ppgtt->base.i915 = i915;
  71         ppgtt->base.total = round_down(U64_MAX, PAGE_SIZE);
  72         ppgtt->base.file = ERR_PTR(-ENODEV);
  73
  74         INIT_LIST_HEAD(&ppgtt->base.active_list);
  75         INIT_LIST_HEAD(&ppgtt->base.inactive_list);
  76         INIT_LIST_HEAD(&ppgtt->base.unbound_list);
  77
  78         INIT_LIST_HEAD(&ppgtt->base.global_link);
  79         drm_mm_init(&ppgtt->base.mm, 0, ppgtt->base.total);
  80         i915_gem_timeline_init(i915, &ppgtt->base.timeline, name);
  81
  82         ppgtt->base.clear_range = nop_clear_range;
  83         ppgtt->base.insert_page = mock_insert_page;
  84         ppgtt->base.insert_entries = mock_insert_entries;
  85         ppgtt->base.bind_vma = mock_bind_ppgtt;
  86         ppgtt->base.unbind_vma = mock_unbind_ppgtt;
  87         ppgtt->base.cleanup = mock_cleanup;
  88
  89         return ppgtt;
  90 }
  91
  92 static int mock_bind_ggtt(struct i915_vma *vma,
  93                           enum i915_cache_level cache_level,
  94                           u32 flags)
  95 {
  96         int err;
  97
  98         err = i915_get_ggtt_vma_pages(vma);
  99         if (err)
 100                 return err;
 101
 102         vma->flags |= I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND;
 103         return 0;
 104 }
 105
 106 static void mock_unbind_ggtt(struct i915_vma *vma)
 107 {
 108 }
 109
 110 void mock_init_ggtt(struct drm_i915_private *i915)
 111 {
 112         struct i915_ggtt *ggtt = &i915->ggtt;
 113
 114         INIT_LIST_HEAD(&i915->vm_list);
 115
 116         ggtt->base.i915 = i915;
 117
 118         ggtt->mappable_base = 0;
 119         ggtt->mappable_end = 2048 * PAGE_SIZE;
 120         ggtt->base.total = 4096 * PAGE_SIZE;
 121
 122         ggtt->base.clear_range = nop_clear_range;
 123         ggtt->base.insert_page = mock_insert_page;
 124         ggtt->base.insert_entries = mock_insert_entries;
 125         ggtt->base.bind_vma = mock_bind_ggtt;
 126         ggtt->base.unbind_vma = mock_unbind_ggtt;
 127         ggtt->base.cleanup = mock_cleanup;
 128
 129         i915_address_space_init(&ggtt->base, i915, "global");
 130 }
 131
 132 void mock_fini_ggtt(struct drm_i915_private *i915)
 133 {
 134         struct i915_ggtt *ggtt = &i915->ggtt;
 135
 136         i915_address_space_fini(&ggtt->base);
 137 }