1 /*
2  * SPDX-License-Identifier: MIT
3  *
4  * Copyright © 2016 Intel Corporation
5  */
6 
7 #ifndef __I915_GEM_CONTEXT_H__
8 #define __I915_GEM_CONTEXT_H__
9 
10 #include "i915_gem_context_types.h"
11 
12 #include "gt/intel_context.h"
13 
14 #include "i915_gem.h"
15 #include "i915_scheduler.h"
16 #include "intel_device_info.h"
17 
18 struct drm_device;
19 struct drm_file;
20 
21 static inline bool i915_gem_context_is_closed(const struct i915_gem_context *ctx)
22 {
23 	return test_bit(CONTEXT_CLOSED, &ctx->flags);
24 }
25 
26 static inline void i915_gem_context_set_closed(struct i915_gem_context *ctx)
27 {
28 	GEM_BUG_ON(i915_gem_context_is_closed(ctx));
29 	set_bit(CONTEXT_CLOSED, &ctx->flags);
30 }
31 
32 static inline bool i915_gem_context_no_error_capture(const struct i915_gem_context *ctx)
33 {
34 	return test_bit(UCONTEXT_NO_ERROR_CAPTURE, &ctx->user_flags);
35 }
36 
37 static inline void i915_gem_context_set_no_error_capture(struct i915_gem_context *ctx)
38 {
39 	set_bit(UCONTEXT_NO_ERROR_CAPTURE, &ctx->user_flags);
40 }
41 
42 static inline void i915_gem_context_clear_no_error_capture(struct i915_gem_context *ctx)
43 {
44 	clear_bit(UCONTEXT_NO_ERROR_CAPTURE, &ctx->user_flags);
45 }
46 
47 static inline bool i915_gem_context_is_bannable(const struct i915_gem_context *ctx)
48 {
49 	return test_bit(UCONTEXT_BANNABLE, &ctx->user_flags);
50 }
51 
52 static inline void i915_gem_context_set_bannable(struct i915_gem_context *ctx)
53 {
54 	set_bit(UCONTEXT_BANNABLE, &ctx->user_flags);
55 }
56 
57 static inline void i915_gem_context_clear_bannable(struct i915_gem_context *ctx)
58 {
59 	clear_bit(UCONTEXT_BANNABLE, &ctx->user_flags);
60 }
61 
62 static inline bool i915_gem_context_is_recoverable(const struct i915_gem_context *ctx)
63 {
64 	return test_bit(UCONTEXT_RECOVERABLE, &ctx->user_flags);
65 }
66 
67 static inline void i915_gem_context_set_recoverable(struct i915_gem_context *ctx)
68 {
69 	set_bit(UCONTEXT_RECOVERABLE, &ctx->user_flags);
70 }
71 
72 static inline void i915_gem_context_clear_recoverable(struct i915_gem_context *ctx)
73 {
74 	clear_bit(UCONTEXT_RECOVERABLE, &ctx->user_flags);
75 }
76 
77 static inline bool i915_gem_context_is_banned(const struct i915_gem_context *ctx)
78 {
79 	return test_bit(CONTEXT_BANNED, &ctx->flags);
80 }
81 
82 static inline void i915_gem_context_set_banned(struct i915_gem_context *ctx)
83 {
84 	set_bit(CONTEXT_BANNED, &ctx->flags);
85 }
86 
87 static inline bool i915_gem_context_force_single_submission(const struct i915_gem_context *ctx)
88 {
89 	return test_bit(CONTEXT_FORCE_SINGLE_SUBMISSION, &ctx->flags);
90 }
91 
92 static inline void i915_gem_context_set_force_single_submission(struct i915_gem_context *ctx)
93 {
94 	__set_bit(CONTEXT_FORCE_SINGLE_SUBMISSION, &ctx->flags);
95 }
96 
97 static inline bool
98 i915_gem_context_user_engines(const struct i915_gem_context *ctx)
99 {
100 	return test_bit(CONTEXT_USER_ENGINES, &ctx->flags);
101 }
102 
103 static inline void
104 i915_gem_context_set_user_engines(struct i915_gem_context *ctx)
105 {
106 	set_bit(CONTEXT_USER_ENGINES, &ctx->flags);
107 }
108 
109 static inline void
110 i915_gem_context_clear_user_engines(struct i915_gem_context *ctx)
111 {
112 	clear_bit(CONTEXT_USER_ENGINES, &ctx->flags);
113 }
114 
115 static inline bool i915_gem_context_is_kernel(struct i915_gem_context *ctx)
116 {
117 	return !ctx->file_priv;
118 }
119 
120 /* i915_gem_context.c */
121 int __must_check i915_gem_contexts_init(struct drm_i915_private *dev_priv);
122 void i915_gem_contexts_fini(struct drm_i915_private *dev_priv);
123 
124 int i915_gem_context_open(struct drm_i915_private *i915,
125 			  struct drm_file *file);
126 void i915_gem_context_close(struct drm_file *file);
127 
128 void i915_gem_context_release(struct kref *ctx_ref);
129 
130 int i915_gem_vm_create_ioctl(struct drm_device *dev, void *data,
131 			     struct drm_file *file);
132 int i915_gem_vm_destroy_ioctl(struct drm_device *dev, void *data,
133 			      struct drm_file *file);
134 
135 int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
136 				  struct drm_file *file);
137 int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
138 				   struct drm_file *file);
139 int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data,
140 				    struct drm_file *file_priv);
141 int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
142 				    struct drm_file *file_priv);
143 int i915_gem_context_reset_stats_ioctl(struct drm_device *dev, void *data,
144 				       struct drm_file *file);
145 
146 struct i915_gem_context *
147 i915_gem_context_create_kernel(struct drm_i915_private *i915, int prio);
148 
149 static inline struct i915_gem_context *
150 i915_gem_context_get(struct i915_gem_context *ctx)
151 {
152 	kref_get(&ctx->ref);
153 	return ctx;
154 }
155 
156 static inline void i915_gem_context_put(struct i915_gem_context *ctx)
157 {
158 	kref_put(&ctx->ref, i915_gem_context_release);
159 }
160 
161 static inline struct i915_gem_engines *
162 i915_gem_context_engines(struct i915_gem_context *ctx)
163 {
164 	return rcu_dereference_protected(ctx->engines,
165 					 lockdep_is_held(&ctx->engines_mutex));
166 }
167 
168 static inline struct i915_gem_engines *
169 i915_gem_context_lock_engines(struct i915_gem_context *ctx)
170 	__acquires(&ctx->engines_mutex)
171 {
172 	mutex_lock(&ctx->engines_mutex);
173 	return i915_gem_context_engines(ctx);
174 }
175 
176 static inline void
177 i915_gem_context_unlock_engines(struct i915_gem_context *ctx)
178 	__releases(&ctx->engines_mutex)
179 {
180 	mutex_unlock(&ctx->engines_mutex);
181 }
182 
183 static inline struct intel_context *
184 i915_gem_context_get_engine(struct i915_gem_context *ctx, unsigned int idx)
185 {
186 	struct intel_context *ce = ERR_PTR(-EINVAL);
187 
188 	rcu_read_lock(); {
189 		struct i915_gem_engines *e = rcu_dereference(ctx->engines);
190 		if (likely(idx < e->num_engines && e->engines[idx]))
191 			ce = intel_context_get(e->engines[idx]);
192 	} rcu_read_unlock();
193 
194 	return ce;
195 }
196 
197 static inline void
198 i915_gem_engines_iter_init(struct i915_gem_engines_iter *it,
199 			   struct i915_gem_engines *engines)
200 {
201 	GEM_BUG_ON(!engines);
202 	it->engines = engines;
203 	it->idx = 0;
204 }
205 
206 struct intel_context *
207 i915_gem_engines_iter_next(struct i915_gem_engines_iter *it);
208 
209 #define for_each_gem_engine(ce, engines, it) \
210 	for (i915_gem_engines_iter_init(&(it), (engines)); \
211 	     ((ce) = i915_gem_engines_iter_next(&(it)));)
212 
213 struct i915_lut_handle *i915_lut_handle_alloc(void);
214 void i915_lut_handle_free(struct i915_lut_handle *lut);
215 
216 #endif /* !__I915_GEM_CONTEXT_H__ */
217