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_drv.h"
 15#include "i915_gem.h"
 16#include "i915_scheduler.h"
 17#include "intel_device_info.h"
 18
 19struct drm_device;
 20struct drm_file;
 21
 22static inline bool i915_gem_context_is_closed(const struct i915_gem_context *ctx)
 23{
 24	return test_bit(CONTEXT_CLOSED, &ctx->flags);
 25}
 26
 27static inline void i915_gem_context_set_closed(struct i915_gem_context *ctx)
 28{
 29	GEM_BUG_ON(i915_gem_context_is_closed(ctx));
 30	set_bit(CONTEXT_CLOSED, &ctx->flags);
 31}
 32
 33static inline bool i915_gem_context_no_error_capture(const struct i915_gem_context *ctx)
 34{
 35	return test_bit(UCONTEXT_NO_ERROR_CAPTURE, &ctx->user_flags);
 36}
 37
 38static inline void i915_gem_context_set_no_error_capture(struct i915_gem_context *ctx)
 39{
 40	set_bit(UCONTEXT_NO_ERROR_CAPTURE, &ctx->user_flags);
 41}
 42
 43static inline void i915_gem_context_clear_no_error_capture(struct i915_gem_context *ctx)
 44{
 45	clear_bit(UCONTEXT_NO_ERROR_CAPTURE, &ctx->user_flags);
 46}
 47
 48static inline bool i915_gem_context_is_bannable(const struct i915_gem_context *ctx)
 49{
 50	return test_bit(UCONTEXT_BANNABLE, &ctx->user_flags);
 51}
 52
 53static inline void i915_gem_context_set_bannable(struct i915_gem_context *ctx)
 54{
 55	set_bit(UCONTEXT_BANNABLE, &ctx->user_flags);
 56}
 57
 58static inline void i915_gem_context_clear_bannable(struct i915_gem_context *ctx)
 59{
 60	clear_bit(UCONTEXT_BANNABLE, &ctx->user_flags);
 61}
 62
 63static inline bool i915_gem_context_is_recoverable(const struct i915_gem_context *ctx)
 64{
 65	return test_bit(UCONTEXT_RECOVERABLE, &ctx->user_flags);
 66}
 67
 68static inline void i915_gem_context_set_recoverable(struct i915_gem_context *ctx)
 69{
 70	set_bit(UCONTEXT_RECOVERABLE, &ctx->user_flags);
 71}
 72
 73static inline void i915_gem_context_clear_recoverable(struct i915_gem_context *ctx)
 74{
 75	clear_bit(UCONTEXT_RECOVERABLE, &ctx->user_flags);
 76}
 77
 78static inline bool i915_gem_context_is_persistent(const struct i915_gem_context *ctx)
 79{
 80	return test_bit(UCONTEXT_PERSISTENCE, &ctx->user_flags);
 81}
 82
 83static inline void i915_gem_context_set_persistence(struct i915_gem_context *ctx)
 84{
 85	set_bit(UCONTEXT_PERSISTENCE, &ctx->user_flags);
 86}
 87
 88static inline void i915_gem_context_clear_persistence(struct i915_gem_context *ctx)
 89{
 90	clear_bit(UCONTEXT_PERSISTENCE, &ctx->user_flags);
 91}
 92
 93static inline bool
 94i915_gem_context_user_engines(const struct i915_gem_context *ctx)
 95{
 96	return test_bit(CONTEXT_USER_ENGINES, &ctx->flags);
 97}
 98
 99static inline void
100i915_gem_context_set_user_engines(struct i915_gem_context *ctx)
101{
102	set_bit(CONTEXT_USER_ENGINES, &ctx->flags);
103}
104
105static inline void
106i915_gem_context_clear_user_engines(struct i915_gem_context *ctx)
107{
108	clear_bit(CONTEXT_USER_ENGINES, &ctx->flags);
109}
110
111/* i915_gem_context.c */
112void i915_gem_init__contexts(struct drm_i915_private *i915);
113
114int i915_gem_context_open(struct drm_i915_private *i915,
115			  struct drm_file *file);
116void i915_gem_context_close(struct drm_file *file);
117
118void i915_gem_context_release(struct kref *ctx_ref);
119
120int i915_gem_vm_create_ioctl(struct drm_device *dev, void *data,
121			     struct drm_file *file);
122int i915_gem_vm_destroy_ioctl(struct drm_device *dev, void *data,
123			      struct drm_file *file);
124
125int i915_gem_context_create_ioctl(struct drm_device *dev, void *data,
126				  struct drm_file *file);
127int i915_gem_context_destroy_ioctl(struct drm_device *dev, void *data,
128				   struct drm_file *file);
129int i915_gem_context_getparam_ioctl(struct drm_device *dev, void *data,
130				    struct drm_file *file_priv);
131int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
132				    struct drm_file *file_priv);
133int i915_gem_context_reset_stats_ioctl(struct drm_device *dev, void *data,
134				       struct drm_file *file);
135
136static inline struct i915_gem_context *
137i915_gem_context_get(struct i915_gem_context *ctx)
138{
139	kref_get(&ctx->ref);
140	return ctx;
141}
142
143static inline void i915_gem_context_put(struct i915_gem_context *ctx)
144{
145	kref_put(&ctx->ref, i915_gem_context_release);
146}
147
148static inline struct i915_address_space *
149i915_gem_context_vm(struct i915_gem_context *ctx)
150{
151	return rcu_dereference_protected(ctx->vm, lockdep_is_held(&ctx->mutex));
152}
153
154static inline struct i915_address_space *
155i915_gem_context_get_vm_rcu(struct i915_gem_context *ctx)
156{
157	struct i915_address_space *vm;
158
159	rcu_read_lock();
160	vm = rcu_dereference(ctx->vm);
161	if (!vm)
162		vm = &ctx->i915->ggtt.vm;
163	vm = i915_vm_get(vm);
164	rcu_read_unlock();
165
166	return vm;
167}
168
169static inline struct i915_gem_engines *
170i915_gem_context_engines(struct i915_gem_context *ctx)
171{
172	return rcu_dereference_protected(ctx->engines,
173					 lockdep_is_held(&ctx->engines_mutex));
174}
175
176static inline struct i915_gem_engines *
177i915_gem_context_lock_engines(struct i915_gem_context *ctx)
178	__acquires(&ctx->engines_mutex)
179{
180	mutex_lock(&ctx->engines_mutex);
181	return i915_gem_context_engines(ctx);
182}
183
184static inline void
185i915_gem_context_unlock_engines(struct i915_gem_context *ctx)
186	__releases(&ctx->engines_mutex)
187{
188	mutex_unlock(&ctx->engines_mutex);
189}
190
191static inline struct intel_context *
192i915_gem_context_get_engine(struct i915_gem_context *ctx, unsigned int idx)
193{
194	struct intel_context *ce;
195
196	rcu_read_lock(); {
197		struct i915_gem_engines *e = rcu_dereference(ctx->engines);
198		if (unlikely(!e)) /* context was closed! */
199			ce = ERR_PTR(-ENOENT);
200		else if (likely(idx < e->num_engines && e->engines[idx]))
201			ce = intel_context_get(e->engines[idx]);
202		else
203			ce = ERR_PTR(-EINVAL);
204	} rcu_read_unlock();
205
206	return ce;
207}
208
209static inline void
210i915_gem_engines_iter_init(struct i915_gem_engines_iter *it,
211			   struct i915_gem_engines *engines)
212{
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
227int i915_gem_user_to_context_sseu(struct intel_gt *gt,
228				  const struct drm_i915_gem_context_param_sseu *user,
229				  struct intel_sseu *context);
230
231#endif /* !__I915_GEM_CONTEXT_H__ */