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 
27 static 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 
35 static 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 
41 static 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 
50 static void mock_unbind_ppgtt(struct i915_vma *vma)
51 {
52 }
53 
54 static void mock_cleanup(struct i915_address_space *vm)
55 {
56 }
57 
58 struct i915_hw_ppgtt *
59 mock_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->vm.i915 = i915;
70 	ppgtt->vm.total = round_down(U64_MAX, PAGE_SIZE);
71 	ppgtt->vm.file = ERR_PTR(-ENODEV);
72 
73 	INIT_LIST_HEAD(&ppgtt->vm.active_list);
74 	INIT_LIST_HEAD(&ppgtt->vm.inactive_list);
75 	INIT_LIST_HEAD(&ppgtt->vm.unbound_list);
76 
77 	INIT_LIST_HEAD(&ppgtt->vm.global_link);
78 	drm_mm_init(&ppgtt->vm.mm, 0, ppgtt->vm.total);
79 
80 	ppgtt->vm.clear_range = nop_clear_range;
81 	ppgtt->vm.insert_page = mock_insert_page;
82 	ppgtt->vm.insert_entries = mock_insert_entries;
83 	ppgtt->vm.cleanup = mock_cleanup;
84 
85 	ppgtt->vm.vma_ops.bind_vma    = mock_bind_ppgtt;
86 	ppgtt->vm.vma_ops.unbind_vma  = mock_unbind_ppgtt;
87 	ppgtt->vm.vma_ops.set_pages   = ppgtt_set_pages;
88 	ppgtt->vm.vma_ops.clear_pages = clear_pages;
89 
90 	return ppgtt;
91 }
92 
93 static 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 
101 static void mock_unbind_ggtt(struct i915_vma *vma)
102 {
103 }
104 
105 void 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->vm.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->vm.total = 4096 * PAGE_SIZE;
116 
117 	ggtt->vm.clear_range = nop_clear_range;
118 	ggtt->vm.insert_page = mock_insert_page;
119 	ggtt->vm.insert_entries = mock_insert_entries;
120 	ggtt->vm.cleanup = mock_cleanup;
121 
122 	ggtt->vm.vma_ops.bind_vma    = mock_bind_ggtt;
123 	ggtt->vm.vma_ops.unbind_vma  = mock_unbind_ggtt;
124 	ggtt->vm.vma_ops.set_pages   = ggtt_set_pages;
125 	ggtt->vm.vma_ops.clear_pages = clear_pages;
126 
127 	i915_address_space_init(&ggtt->vm, i915, "global");
128 }
129 
130 void mock_fini_ggtt(struct drm_i915_private *i915)
131 {
132 	struct i915_ggtt *ggtt = &i915->ggtt;
133 
134 	i915_address_space_fini(&ggtt->vm);
135 }
136