LXR linux/drivers/gpu/drm/i915/selftests/mock

   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
  27static 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
  35static 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
  41static 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
  51static void mock_unbind_ppgtt(struct i915_vma *vma)
  52{
  53}
  54
  55static void mock_cleanup(struct i915_address_space *vm)
  56{
  57}
  58
  59struct i915_hw_ppgtt *
  60mock_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
  92static 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
 106static void mock_unbind_ggtt(struct i915_vma *vma)
 107{
 108}
 109
 110void 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
 132void 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}
 138