1 /* $NetBSD: mock_gtt.c,v 1.2 2021/12/18 23:45:31 riastradh Exp $ */
2
3 /*
4 * Copyright © 2016 Intel Corporation
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
23 * IN THE SOFTWARE.
24 *
25 */
26
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: mock_gtt.c,v 1.2 2021/12/18 23:45:31 riastradh Exp $");
29
30 #include "mock_gtt.h"
31
mock_insert_page(struct i915_address_space * vm,dma_addr_t addr,u64 offset,enum i915_cache_level level,u32 flags)32 static void mock_insert_page(struct i915_address_space *vm,
33 dma_addr_t addr,
34 u64 offset,
35 enum i915_cache_level level,
36 u32 flags)
37 {
38 }
39
mock_insert_entries(struct i915_address_space * vm,struct i915_vma * vma,enum i915_cache_level level,u32 flags)40 static void mock_insert_entries(struct i915_address_space *vm,
41 struct i915_vma *vma,
42 enum i915_cache_level level, u32 flags)
43 {
44 }
45
mock_bind_ppgtt(struct i915_vma * vma,enum i915_cache_level cache_level,u32 flags)46 static int mock_bind_ppgtt(struct i915_vma *vma,
47 enum i915_cache_level cache_level,
48 u32 flags)
49 {
50 GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND);
51 set_bit(I915_VMA_LOCAL_BIND_BIT, __i915_vma_flags(vma));
52 return 0;
53 }
54
mock_unbind_ppgtt(struct i915_vma * vma)55 static void mock_unbind_ppgtt(struct i915_vma *vma)
56 {
57 }
58
mock_cleanup(struct i915_address_space * vm)59 static void mock_cleanup(struct i915_address_space *vm)
60 {
61 }
62
mock_clear_range(struct i915_address_space * vm,u64 start,u64 length)63 static void mock_clear_range(struct i915_address_space *vm,
64 u64 start, u64 length)
65 {
66 }
67
mock_ppgtt(struct drm_i915_private * i915,const char * name)68 struct i915_ppgtt *mock_ppgtt(struct drm_i915_private *i915, const char *name)
69 {
70 struct i915_ppgtt *ppgtt;
71
72 ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL);
73 if (!ppgtt)
74 return NULL;
75
76 ppgtt->vm.gt = &i915->gt;
77 ppgtt->vm.i915 = i915;
78 ppgtt->vm.total = round_down(U64_MAX, PAGE_SIZE);
79 ppgtt->vm.file = ERR_PTR(-ENODEV);
80
81 i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT);
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 ppgtt->vm.vma_ops.set_pages = ppgtt_set_pages;
91 ppgtt->vm.vma_ops.clear_pages = clear_pages;
92
93 return ppgtt;
94 }
95
mock_bind_ggtt(struct i915_vma * vma,enum i915_cache_level cache_level,u32 flags)96 static int mock_bind_ggtt(struct i915_vma *vma,
97 enum i915_cache_level cache_level,
98 u32 flags)
99 {
100 atomic_or(I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND, &vma->flags);
101 return 0;
102 }
103
mock_unbind_ggtt(struct i915_vma * vma)104 static void mock_unbind_ggtt(struct i915_vma *vma)
105 {
106 }
107
mock_init_ggtt(struct drm_i915_private * i915,struct i915_ggtt * ggtt)108 void mock_init_ggtt(struct drm_i915_private *i915, struct i915_ggtt *ggtt)
109 {
110 memset(ggtt, 0, sizeof(*ggtt));
111
112 ggtt->vm.gt = &i915->gt;
113 ggtt->vm.i915 = i915;
114 ggtt->vm.is_ggtt = true;
115
116 ggtt->gmadr = (struct resource) DEFINE_RES_MEM(0, 2048 * PAGE_SIZE);
117 ggtt->mappable_end = resource_size(&ggtt->gmadr);
118 ggtt->vm.total = 4096 * PAGE_SIZE;
119
120 ggtt->vm.clear_range = mock_clear_range;
121 ggtt->vm.insert_page = mock_insert_page;
122 ggtt->vm.insert_entries = mock_insert_entries;
123 ggtt->vm.cleanup = mock_cleanup;
124
125 ggtt->vm.vma_ops.bind_vma = mock_bind_ggtt;
126 ggtt->vm.vma_ops.unbind_vma = mock_unbind_ggtt;
127 ggtt->vm.vma_ops.set_pages = ggtt_set_pages;
128 ggtt->vm.vma_ops.clear_pages = clear_pages;
129
130 i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT);
131 i915->gt.ggtt = ggtt;
132 }
133
mock_fini_ggtt(struct i915_ggtt * ggtt)134 void mock_fini_ggtt(struct i915_ggtt *ggtt)
135 {
136 i915_address_space_fini(&ggtt->vm);
137 }
138