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			     unsigned int pat_index,
 31			     u32 flags)
 32{
 33}
 34
 35static 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
 41static 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
 51static void mock_unbind_ppgtt(struct i915_address_space *vm,
 52			      struct i915_vma_resource *vma_res)
 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 = 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
 94static 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
102static void mock_unbind_ggtt(struct i915_address_space *vm,
103			     struct i915_vma_resource *vma_res)
104{
105}
106
107void 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
133void mock_fini_ggtt(struct i915_ggtt *ggtt)
134{
135	i915_address_space_fini(&ggtt->vm);
136}