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