1/* $NetBSD: i915_gem_context.h,v 1.2 2021/12/18 23:45:30 riastradh Exp $ */ 2 3/* 4 * SPDX-License-Identifier: MIT 5 * 6 * Copyright �� 2016 Intel Corporation 7 */ 8 9#ifndef __I915_GEM_CONTEXT_H__ 10#define __I915_GEM_CONTEXT_H__ 11 12#include "i915_gem_context_types.h" 13 14#include "gt/intel_context.h" 15 16#include "i915_drv.h" 17#include "i915_gem.h" 18#include "i915_scheduler.h" 19#include "intel_device_info.h" 20 21struct drm_device; 22struct drm_file; 23 24static inline bool i915_gem_context_is_closed(const struct i915_gem_context *ctx) 25{ 26 return test_bit(CONTEXT_CLOSED, &ctx->flags); 27} 28 29static inline void i915_gem_context_set_closed(struct i915_gem_context *ctx) 30{ 31 GEM_BUG_ON(i915_gem_context_is_closed(ctx)); 32 set_bit(CONTEXT_CLOSED, &ctx->flags); 33} 34 35static inline bool i915_gem_context_no_error_capture(const struct i915_gem_context *ctx) 36{ 37 return test_bit(UCONTEXT_NO_ERROR_CAPTURE, &ctx->user_flags); 38} 39 40static inline void i915_gem_context_set_no_error_capture(struct i915_gem_context *ctx) 41{ 42 set_bit(UCONTEXT_NO_ERROR_CAPTURE, &ctx->user_flags); 43} 44 45static inline void i915_gem_context_clear_no_error_capture(struct i915_gem_context *ctx) 46{ 47 clear_bit(UCONTEXT_NO_ERROR_CAPTURE, &ctx->user_flags); 48} 49 50static inline bool i915_gem_context_is_bannable(const struct i915_gem_context *ctx) 51{ 52 return test_bit(UCONTEXT_BANNABLE, &ctx->user_flags); 53} 54 55static inline void i915_gem_context_set_bannable(struct i915_gem_context *ctx) 56{ 57 set_bit(UCONTEXT_BANNABLE, &ctx->user_flags); 58} 59 60static inline void i915_gem_context_clear_bannable(struct i915_gem_context *ctx) 61{ 62 clear_bit(UCONTEXT_BANNABLE, &ctx->user_flags); 63} 64 65static inline bool i915_gem_context_is_recoverable(const struct i915_gem_context *ctx) 66{ 67 return test_bit(UCONTEXT_RECOVERABLE, &ctx->user_flags); 68} 69 70static inline void i915_gem_context_set_recoverable(struct i915_gem_context *ctx) 71{ 72 set_bit(UCONTEXT_RECOVERABLE, &ctx->user_flags); 73} 74 75static inline void i915_gem_context_clear_recoverable(struct i915_gem_context *ctx) 76{ 77 clear_bit(UCONTEXT_RECOVERABLE, &ctx->user_flags); 78} 79 80static inline bool i915_gem_context_is_persistent(const struct i915_gem_context *ctx) 81{ 82 return test_bit(UCONTEXT_PERSISTENCE, &ctx->user_flags); 83} 84 85static inline void i915_gem_context_set_persistence(struct i915_gem_context *ctx) 86{ 87 set_bit(UCONTEXT_PERSISTENCE, &ctx->user_flags); 88} 89 90static inline void i915_gem_context_clear_persistence(struct i915_gem_context *ctx) 91{ 92 clear_bit(UCONTEXT_PERSISTENCE, &ctx->user_flags); 93} 94 95static inline bool 96i915_gem_context_user_engines(const struct i915_gem_context *ctx) 97{ 98 return test_bit(CONTEXT_USER_ENGINES, &ctx->flags); 99} 100 101static inline void 102i915_gem_context_set_user_engines(struct i915_gem_context *ctx) 103{ 104 set_bit(CONTEXT_USER_ENGINES, &ctx->flags); 105} 106 107static inline void 108i915_gem_context_clear_user_engines(struct i915_gem_context *ctx) 109{ 110 clear_bit(CONTEXT_USER_ENGINES, &ctx->flags); 111} 112 113/* i915_gem_context.c */ 114void i915_gem_init__contexts(struct drm_i915_private *i915); 115void i915_gem_driver_release__contexts(struct drm_i915_private *i915); 116 117int i915_gem_context_open(struct drm_i915_private *i915, 118 struct drm_file *file); 119void i915_gem_context_close(struct drm_file *file); 120 121void i915_gem_context_release(struct kref *ctx_ref); 122 123int i915_gem_vm_create_ioctl(struct drm_device *dev, void *data, 124 struct drm_file *file); 125int i915_gem_vm_destroy_ioctl(struct drm_device *dev, void *data, 126 struct drm_file *file); 127 128int i915_gem_context_create_ioctl(struct drm_device *dev, void *data, 129 struct drm_file *file); 130int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data, 131 struct drm_file *file); 132int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data, 133 struct drm_file *file_priv); 134int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data, 135 struct drm_file *file_priv); 136int i915_gem_context_reset_stats_ioctl(struct drm_device *dev, void *data, 137 struct drm_file *file); 138 139static inline struct i915_gem_context * 140i915_gem_context_get(struct i915_gem_context *ctx) 141{ 142 kref_get(&ctx->ref); 143 return ctx; 144} 145 146static inline void i915_gem_context_put(struct i915_gem_context *ctx) 147{ 148 kref_put(&ctx->ref, i915_gem_context_release); 149} 150 151static inline struct i915_address_space * 152i915_gem_context_vm(struct i915_gem_context *ctx) 153{ 154 return rcu_dereference_protected(ctx->vm, lockdep_is_held(&ctx->mutex)); 155} 156 157static inline struct i915_address_space * 158i915_gem_context_get_vm_rcu(struct i915_gem_context *ctx) 159{ 160 struct i915_address_space *vm; 161 162 rcu_read_lock(); 163 vm = rcu_dereference(ctx->vm); 164 if (!vm) 165 vm = &ctx->i915->ggtt.vm; 166 vm = i915_vm_get(vm); 167 rcu_read_unlock(); 168 169 return vm; 170} 171 172static inline struct i915_gem_engines * 173i915_gem_context_engines(struct i915_gem_context *ctx) 174{ 175 return rcu_dereference_protected(ctx->engines, 176 lockdep_is_held(&ctx->engines_mutex)); 177} 178 179static inline struct i915_gem_engines * 180i915_gem_context_lock_engines(struct i915_gem_context *ctx) 181 __acquires(&ctx->engines_mutex) 182{ 183 mutex_lock(&ctx->engines_mutex); 184 return i915_gem_context_engines(ctx); 185} 186 187static inline void 188i915_gem_context_unlock_engines(struct i915_gem_context *ctx) 189 __releases(&ctx->engines_mutex) 190{ 191 mutex_unlock(&ctx->engines_mutex); 192} 193 194static inline struct intel_context * 195i915_gem_context_get_engine(struct i915_gem_context *ctx, unsigned int idx) 196{ 197 struct intel_context *ce = ERR_PTR(-EINVAL); 198 199 rcu_read_lock(); { 200 struct i915_gem_engines *e = rcu_dereference(ctx->engines); 201 if (likely(idx < e->num_engines && e->engines[idx])) 202 ce = intel_context_get(e->engines[idx]); 203 } rcu_read_unlock(); 204 205 return ce; 206} 207 208static inline void 209i915_gem_engines_iter_init(struct i915_gem_engines_iter *it, 210 struct i915_gem_engines *engines) 211{ 212 GEM_BUG_ON(!engines); 213 it->engines = engines; 214 it->idx = 0; 215} 216 217struct intel_context * 218i915_gem_engines_iter_next(struct i915_gem_engines_iter *it); 219 220#define for_each_gem_engine(ce, engines, it) \ 221 for (i915_gem_engines_iter_init(&(it), (engines)); \ 222 ((ce) = i915_gem_engines_iter_next(&(it)));) 223 224struct i915_lut_handle *i915_lut_handle_alloc(void); 225void i915_lut_handle_free(struct i915_lut_handle *lut); 226 227#endif /* !__I915_GEM_CONTEXT_H__ */ 228