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 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
  51static void mock_unbind_ppgtt(struct i915_address_space *vm,
  52                              struct i915_vma *vma)
  53{
  54}
  55
  56static void mock_cleanup(struct i915_address_space *vm)
  57{
  58}
  59
  60static void mock_clear_range(struct i915_address_space *vm,
  61                             u64 start, u64 length)
  62{
  63}
  64
  65struct 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
  96static 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
 104static void mock_unbind_ggtt(struct i915_address_space *vm,
 105                             struct i915_vma *vma)
 106{
 107}
 108
 109void 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
 137void mock_fini_ggtt(struct i915_ggtt *ggtt)
 138{
 139        i915_address_space_fini(&ggtt->vm);
 140}
 141