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(size: 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(vm: &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(res: &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(vm: &ggtt->vm, VM_CLASS_GGTT);
131}
132
133void mock_fini_ggtt(struct i915_ggtt *ggtt)
134{
135 i915_address_space_fini(vm: &ggtt->vm);
136}
137

source code of linux/drivers/gpu/drm/i915/selftests/mock_gtt.c