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