1 /*
2 * SPDX-License-Identifier: MIT
3 *
4 * Copyright © 2016 Intel Corporation
5 */
6
7 #include "i915_file_private.h"
8 #include "mock_context.h"
9 #include "selftests/mock_drm.h"
10 #include "selftests/mock_gtt.h"
11
12 struct i915_gem_context *
mock_context(struct drm_i915_private * i915,const char * name)13 mock_context(struct drm_i915_private *i915,
14 const char *name)
15 {
16 struct i915_gem_context *ctx;
17 struct i915_gem_engines *e;
18 struct intel_sseu null_sseu = {};
19
20 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
21 if (!ctx)
22 return NULL;
23
24 kref_init(&ctx->ref);
25 INIT_LIST_HEAD(&ctx->link);
26 ctx->i915 = i915;
27 INIT_WORK(&ctx->release_work, i915_gem_context_release_work);
28
29 mutex_init(&ctx->mutex);
30
31 spin_lock_init(&ctx->stale.lock);
32 INIT_LIST_HEAD(&ctx->stale.engines);
33
34 i915_gem_context_set_persistence(ctx);
35
36 if (name) {
37 struct i915_ppgtt *ppgtt;
38
39 strncpy(ctx->name, name, sizeof(ctx->name) - 1);
40
41 ppgtt = mock_ppgtt(i915, name);
42 if (!ppgtt)
43 goto err_free;
44
45 ctx->vm = &ppgtt->vm;
46 }
47
48 mutex_init(&ctx->engines_mutex);
49 e = default_engines(ctx, null_sseu);
50 if (IS_ERR(e))
51 goto err_vm;
52 RCU_INIT_POINTER(ctx->engines, e);
53
54 INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL);
55 mutex_init(&ctx->lut_mutex);
56
57 return ctx;
58
59 err_vm:
60 if (ctx->vm)
61 i915_vm_put(ctx->vm);
62 err_free:
63 kfree(ctx);
64 return NULL;
65 }
66
mock_context_close(struct i915_gem_context * ctx)67 void mock_context_close(struct i915_gem_context *ctx)
68 {
69 context_close(ctx);
70 }
71
mock_init_contexts(struct drm_i915_private * i915)72 void mock_init_contexts(struct drm_i915_private *i915)
73 {
74 init_contexts(&i915->gem.contexts);
75 }
76
77 struct i915_gem_context *
live_context(struct drm_i915_private * i915,struct file * file)78 live_context(struct drm_i915_private *i915, struct file *file)
79 {
80 struct drm_i915_file_private *fpriv = to_drm_file(file)->driver_priv;
81 struct i915_gem_proto_context *pc;
82 struct i915_gem_context *ctx;
83 int err;
84 u32 id;
85
86 pc = proto_context_create(i915, 0);
87 if (IS_ERR(pc))
88 return ERR_CAST(pc);
89
90 ctx = i915_gem_create_context(i915, pc);
91 proto_context_close(i915, pc);
92 if (IS_ERR(ctx))
93 return ctx;
94
95 i915_gem_context_set_no_error_capture(ctx);
96
97 err = xa_alloc(&fpriv->context_xa, &id, NULL, xa_limit_32b, GFP_KERNEL);
98 if (err < 0)
99 goto err_ctx;
100
101 gem_context_register(ctx, fpriv, id);
102
103 return ctx;
104
105 err_ctx:
106 context_close(ctx);
107 return ERR_PTR(err);
108 }
109
110 struct i915_gem_context *
live_context_for_engine(struct intel_engine_cs * engine,struct file * file)111 live_context_for_engine(struct intel_engine_cs *engine, struct file *file)
112 {
113 struct i915_gem_engines *engines;
114 struct i915_gem_context *ctx;
115 struct intel_sseu null_sseu = {};
116 struct intel_context *ce;
117
118 engines = alloc_engines(1);
119 if (!engines)
120 return ERR_PTR(-ENOMEM);
121
122 ctx = live_context(engine->i915, file);
123 if (IS_ERR(ctx)) {
124 __free_engines(engines, 0);
125 return ctx;
126 }
127
128 ce = intel_context_create(engine);
129 if (IS_ERR(ce)) {
130 __free_engines(engines, 0);
131 return ERR_CAST(ce);
132 }
133
134 intel_context_set_gem(ce, ctx, null_sseu);
135 engines->engines[0] = ce;
136 engines->num_engines = 1;
137
138 mutex_lock(&ctx->engines_mutex);
139 i915_gem_context_set_user_engines(ctx);
140 engines = rcu_replace_pointer(ctx->engines, engines, 1);
141 mutex_unlock(&ctx->engines_mutex);
142
143 engines_idle_release(ctx, engines);
144
145 return ctx;
146 }
147
148 struct i915_gem_context *
kernel_context(struct drm_i915_private * i915,struct i915_address_space * vm)149 kernel_context(struct drm_i915_private *i915,
150 struct i915_address_space *vm)
151 {
152 struct i915_gem_context *ctx;
153 struct i915_gem_proto_context *pc;
154
155 pc = proto_context_create(i915, 0);
156 if (IS_ERR(pc))
157 return ERR_CAST(pc);
158
159 if (vm) {
160 if (pc->vm)
161 i915_vm_put(pc->vm);
162 pc->vm = i915_vm_get(vm);
163 }
164
165 ctx = i915_gem_create_context(i915, pc);
166 proto_context_close(i915, pc);
167 if (IS_ERR(ctx))
168 return ctx;
169
170 i915_gem_context_clear_bannable(ctx);
171 i915_gem_context_set_persistence(ctx);
172 i915_gem_context_set_no_error_capture(ctx);
173
174 return ctx;
175 }
176
kernel_context_close(struct i915_gem_context * ctx)177 void kernel_context_close(struct i915_gem_context *ctx)
178 {
179 context_close(ctx);
180 }
181