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6#ifndef __INTEL_CONTEXT_H__
7#define __INTEL_CONTEXT_H__
8
9#include <linux/bitops.h>
10#include <linux/lockdep.h>
11#include <linux/types.h>
12
13#include "i915_active.h"
14#include "i915_drv.h"
15#include "intel_context_types.h"
16#include "intel_engine_types.h"
17#include "intel_ring_types.h"
18#include "intel_timeline_types.h"
19#include "i915_trace.h"
20
21#define CE_TRACE(ce, fmt, ...) do { \
22 const struct intel_context *ce__ = (ce); \
23 ENGINE_TRACE(ce__->engine, "context:%llx " fmt, \
24 ce__->timeline->fence_context, \
25 ##__VA_ARGS__); \
26} while (0)
27
28struct i915_gem_ww_ctx;
29
30void intel_context_init(struct intel_context *ce,
31 struct intel_engine_cs *engine);
32void intel_context_fini(struct intel_context *ce);
33
34void i915_context_module_exit(void);
35int i915_context_module_init(void);
36
37struct intel_context *
38intel_context_create(struct intel_engine_cs *engine);
39
40int intel_context_alloc_state(struct intel_context *ce);
41
42void intel_context_free(struct intel_context *ce);
43
44int intel_context_reconfigure_sseu(struct intel_context *ce,
45 const struct intel_sseu sseu);
46
47
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52
53
54
55static inline int intel_context_lock_pinned(struct intel_context *ce)
56 __acquires(ce->pin_mutex)
57{
58 return mutex_lock_interruptible(&ce->pin_mutex);
59}
60
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65
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67
68
69
70static inline bool
71intel_context_is_pinned(struct intel_context *ce)
72{
73 return atomic_read(&ce->pin_count);
74}
75
76static inline void intel_context_cancel_request(struct intel_context *ce,
77 struct i915_request *rq)
78{
79 GEM_BUG_ON(!ce->ops->cancel_request);
80 return ce->ops->cancel_request(ce, rq);
81}
82
83
84
85
86
87
88
89static inline void intel_context_unlock_pinned(struct intel_context *ce)
90 __releases(ce->pin_mutex)
91{
92 mutex_unlock(&ce->pin_mutex);
93}
94
95int __intel_context_do_pin(struct intel_context *ce);
96int __intel_context_do_pin_ww(struct intel_context *ce,
97 struct i915_gem_ww_ctx *ww);
98
99static inline bool intel_context_pin_if_active(struct intel_context *ce)
100{
101 return atomic_inc_not_zero(&ce->pin_count);
102}
103
104static inline int intel_context_pin(struct intel_context *ce)
105{
106 if (likely(intel_context_pin_if_active(ce)))
107 return 0;
108
109 return __intel_context_do_pin(ce);
110}
111
112static inline int intel_context_pin_ww(struct intel_context *ce,
113 struct i915_gem_ww_ctx *ww)
114{
115 if (likely(intel_context_pin_if_active(ce)))
116 return 0;
117
118 return __intel_context_do_pin_ww(ce, ww);
119}
120
121static inline void __intel_context_pin(struct intel_context *ce)
122{
123 GEM_BUG_ON(!intel_context_is_pinned(ce));
124 atomic_inc(&ce->pin_count);
125}
126
127void __intel_context_do_unpin(struct intel_context *ce, int sub);
128
129static inline void intel_context_sched_disable_unpin(struct intel_context *ce)
130{
131 __intel_context_do_unpin(ce, 2);
132}
133
134static inline void intel_context_unpin(struct intel_context *ce)
135{
136 if (!ce->ops->sched_disable) {
137 __intel_context_do_unpin(ce, 1);
138 } else {
139
140
141
142
143
144
145 while (!atomic_add_unless(&ce->pin_count, -1, 1)) {
146 if (atomic_cmpxchg(&ce->pin_count, 1, 2) == 1) {
147 ce->ops->sched_disable(ce);
148 break;
149 }
150 }
151 }
152}
153
154void intel_context_enter_engine(struct intel_context *ce);
155void intel_context_exit_engine(struct intel_context *ce);
156
157static inline void intel_context_enter(struct intel_context *ce)
158{
159 lockdep_assert_held(&ce->timeline->mutex);
160 if (!ce->active_count++)
161 ce->ops->enter(ce);
162}
163
164static inline void intel_context_mark_active(struct intel_context *ce)
165{
166 lockdep_assert_held(&ce->timeline->mutex);
167 ++ce->active_count;
168}
169
170static inline void intel_context_exit(struct intel_context *ce)
171{
172 lockdep_assert_held(&ce->timeline->mutex);
173 GEM_BUG_ON(!ce->active_count);
174 if (!--ce->active_count)
175 ce->ops->exit(ce);
176}
177
178static inline struct intel_context *intel_context_get(struct intel_context *ce)
179{
180 kref_get(&ce->ref);
181 return ce;
182}
183
184static inline void intel_context_put(struct intel_context *ce)
185{
186 kref_put(&ce->ref, ce->ops->destroy);
187}
188
189static inline struct intel_timeline *__must_check
190intel_context_timeline_lock(struct intel_context *ce)
191 __acquires(&ce->timeline->mutex)
192{
193 struct intel_timeline *tl = ce->timeline;
194 int err;
195
196 err = mutex_lock_interruptible(&tl->mutex);
197 if (err)
198 return ERR_PTR(err);
199
200 return tl;
201}
202
203static inline void intel_context_timeline_unlock(struct intel_timeline *tl)
204 __releases(&tl->mutex)
205{
206 mutex_unlock(&tl->mutex);
207}
208
209int intel_context_prepare_remote_request(struct intel_context *ce,
210 struct i915_request *rq);
211
212struct i915_request *intel_context_create_request(struct intel_context *ce);
213
214struct i915_request *
215intel_context_find_active_request(struct intel_context *ce);
216
217static inline bool intel_context_is_barrier(const struct intel_context *ce)
218{
219 return test_bit(CONTEXT_BARRIER_BIT, &ce->flags);
220}
221
222static inline bool intel_context_is_closed(const struct intel_context *ce)
223{
224 return test_bit(CONTEXT_CLOSED_BIT, &ce->flags);
225}
226
227static inline bool intel_context_has_inflight(const struct intel_context *ce)
228{
229 return test_bit(COPS_HAS_INFLIGHT_BIT, &ce->ops->flags);
230}
231
232static inline bool intel_context_use_semaphores(const struct intel_context *ce)
233{
234 return test_bit(CONTEXT_USE_SEMAPHORES, &ce->flags);
235}
236
237static inline void intel_context_set_use_semaphores(struct intel_context *ce)
238{
239 set_bit(CONTEXT_USE_SEMAPHORES, &ce->flags);
240}
241
242static inline void intel_context_clear_use_semaphores(struct intel_context *ce)
243{
244 clear_bit(CONTEXT_USE_SEMAPHORES, &ce->flags);
245}
246
247static inline bool intel_context_is_banned(const struct intel_context *ce)
248{
249 return test_bit(CONTEXT_BANNED, &ce->flags);
250}
251
252static inline bool intel_context_set_banned(struct intel_context *ce)
253{
254 return test_and_set_bit(CONTEXT_BANNED, &ce->flags);
255}
256
257static inline bool intel_context_ban(struct intel_context *ce,
258 struct i915_request *rq)
259{
260 bool ret = intel_context_set_banned(ce);
261
262 trace_intel_context_ban(ce);
263 if (ce->ops->ban)
264 ce->ops->ban(ce, rq);
265
266 return ret;
267}
268
269static inline bool
270intel_context_force_single_submission(const struct intel_context *ce)
271{
272 return test_bit(CONTEXT_FORCE_SINGLE_SUBMISSION, &ce->flags);
273}
274
275static inline void
276intel_context_set_single_submission(struct intel_context *ce)
277{
278 __set_bit(CONTEXT_FORCE_SINGLE_SUBMISSION, &ce->flags);
279}
280
281static inline bool
282intel_context_nopreempt(const struct intel_context *ce)
283{
284 return test_bit(CONTEXT_NOPREEMPT, &ce->flags);
285}
286
287static inline void
288intel_context_set_nopreempt(struct intel_context *ce)
289{
290 set_bit(CONTEXT_NOPREEMPT, &ce->flags);
291}
292
293static inline void
294intel_context_clear_nopreempt(struct intel_context *ce)
295{
296 clear_bit(CONTEXT_NOPREEMPT, &ce->flags);
297}
298
299static inline u64 intel_context_get_total_runtime_ns(struct intel_context *ce)
300{
301 const u32 period = ce->engine->gt->clock_period_ns;
302
303 return READ_ONCE(ce->runtime.total) * period;
304}
305
306static inline u64 intel_context_get_avg_runtime_ns(struct intel_context *ce)
307{
308 const u32 period = ce->engine->gt->clock_period_ns;
309
310 return mul_u32_u32(ewma_runtime_read(&ce->runtime.avg), period);
311}
312
313#endif
314