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_resource *vma_res,
37 				enum i915_cache_level level, u32 flags)
38 {
39 }
40 
41 static void mock_bind_ppgtt(struct i915_address_space *vm,
42 			    struct i915_vm_pt_stash *stash,
43 			    struct i915_vma_resource *vma_res,
44 			    enum i915_cache_level cache_level,
45 			    u32 flags)
46 {
47 	GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND);
48 	vma_res->bound_flags |= flags;
49 }
50 
51 static void mock_unbind_ppgtt(struct i915_address_space *vm,
52 			      struct i915_vma_resource *vma_res)
53 {
54 }
55 
56 static void mock_cleanup(struct i915_address_space *vm)
57 {
58 }
59 
60 static void mock_clear_range(struct i915_address_space *vm,
61 			     u64 start, u64 length)
62 {
63 }
64 
65 struct 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 
94 static void mock_bind_ggtt(struct i915_address_space *vm,
95 			   struct i915_vm_pt_stash *stash,
96 			   struct i915_vma_resource *vma_res,
97 			   enum i915_cache_level cache_level,
98 			   u32 flags)
99 {
100 }
101 
102 static void mock_unbind_ggtt(struct i915_address_space *vm,
103 			     struct i915_vma_resource *vma_res)
104 {
105 }
106 
107 void 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 = (struct resource) 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 
133 void mock_fini_ggtt(struct i915_ggtt *ggtt)
134 {
135 	i915_address_space_fini(&ggtt->vm);
136 }
137