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 int __i915_gem_context_pin_hw_id(struct i915_gem_context *ctx); 116 static inline int i915_gem_context_pin_hw_id(struct i915_gem_context *ctx) 117 { 118 if (atomic_inc_not_zero(&ctx->hw_id_pin_count)) 119 return 0; 120 121 return __i915_gem_context_pin_hw_id(ctx); 122 } 123 124 static inline void i915_gem_context_unpin_hw_id(struct i915_gem_context *ctx) 125 { 126 GEM_BUG_ON(atomic_read(&ctx->hw_id_pin_count) == 0u); 127 atomic_dec(&ctx->hw_id_pin_count); 128 } 129 130 static inline bool i915_gem_context_is_kernel(struct i915_gem_context *ctx) 131 { 132 return !ctx->file_priv; 133 } 134 135 /* i915_gem_context.c */ 136 int __must_check i915_gem_contexts_init(struct drm_i915_private *dev_priv); 137 void i915_gem_contexts_fini(struct drm_i915_private *dev_priv); 138 139 int i915_gem_context_open(struct drm_i915_private *i915, 140 struct drm_file *file); 141 void i915_gem_context_close(struct drm_file *file); 142 143 void i915_gem_context_release(struct kref *ctx_ref); 144 145 int i915_gem_vm_create_ioctl(struct drm_device *dev, void *data, 146 struct drm_file *file); 147 int i915_gem_vm_destroy_ioctl(struct drm_device *dev, void *data, 148 struct drm_file *file); 149 150 int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, 151 struct drm_file *file); 152 int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data, 153 struct drm_file *file); 154 int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data, 155 struct drm_file *file_priv); 156 int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data, 157 struct drm_file *file_priv); 158 int i915_gem_context_reset_stats_ioctl(struct drm_device *dev, void *data, 159 struct drm_file *file); 160 161 struct i915_gem_context * 162 i915_gem_context_create_kernel(struct drm_i915_private *i915, int prio); 163 164 static inline struct i915_gem_context * 165 i915_gem_context_get(struct i915_gem_context *ctx) 166 { 167 kref_get(&ctx->ref); 168 return ctx; 169 } 170 171 static inline void i915_gem_context_put(struct i915_gem_context *ctx) 172 { 173 kref_put(&ctx->ref, i915_gem_context_release); 174 } 175 176 static inline struct i915_gem_engines * 177 i915_gem_context_engines(struct i915_gem_context *ctx) 178 { 179 return rcu_dereference_protected(ctx->engines, 180 lockdep_is_held(&ctx->engines_mutex)); 181 } 182 183 static inline struct i915_gem_engines * 184 i915_gem_context_lock_engines(struct i915_gem_context *ctx) 185 __acquires(&ctx->engines_mutex) 186 { 187 mutex_lock(&ctx->engines_mutex); 188 return i915_gem_context_engines(ctx); 189 } 190 191 static inline void 192 i915_gem_context_unlock_engines(struct i915_gem_context *ctx) 193 __releases(&ctx->engines_mutex) 194 { 195 mutex_unlock(&ctx->engines_mutex); 196 } 197 198 static inline struct intel_context * 199 i915_gem_context_get_engine(struct i915_gem_context *ctx, unsigned int idx) 200 { 201 struct intel_context *ce = ERR_PTR(-EINVAL); 202 203 rcu_read_lock(); { 204 struct i915_gem_engines *e = rcu_dereference(ctx->engines); 205 if (likely(idx < e->num_engines && e->engines[idx])) 206 ce = intel_context_get(e->engines[idx]); 207 } rcu_read_unlock(); 208 209 return ce; 210 } 211 212 static inline void 213 i915_gem_engines_iter_init(struct i915_gem_engines_iter *it, 214 struct i915_gem_engines *engines) 215 { 216 GEM_BUG_ON(!engines); 217 it->engines = engines; 218 it->idx = 0; 219 } 220 221 struct intel_context * 222 i915_gem_engines_iter_next(struct i915_gem_engines_iter *it); 223 224 #define for_each_gem_engine(ce, engines, it) \ 225 for (i915_gem_engines_iter_init(&(it), (engines)); \ 226 ((ce) = i915_gem_engines_iter_next(&(it)));) 227 228 struct i915_lut_handle *i915_lut_handle_alloc(void); 229 void i915_lut_handle_free(struct i915_lut_handle *lut); 230 231 #endif /* !__I915_GEM_CONTEXT_H__ */ 232