22 	struct intel_engine_cs *engine =  in __engine_unpark()  local
23 		container_of(wf, typeof(*engine), wakeref);  in __engine_unpark()
26 	ENGINE_TRACE(engine, "\n");  in __engine_unpark()
28 	intel_gt_pm_get(engine->gt);  in __engine_unpark()
31 	ce = engine->kernel_context;  in __engine_unpark()
38 			int type = i915_coherent_map_type(engine->i915);  in __engine_unpark()
52 	if (engine->unpark)  in __engine_unpark()
53 		engine->unpark(engine);  in __engine_unpark()
55 	intel_engine_unpark_heartbeat(engine);  in __engine_unpark()
96 	ewma__engine_latency_add(&rq->engine->latency,  in duration()
104 		       struct intel_engine_cs *engine)  in __queue_and_release_pm()  argument
106 	struct intel_gt_timelines *timelines = &engine->gt->timelines;  in __queue_and_release_pm()
108 	ENGINE_TRACE(engine, "parking\n");  in __queue_and_release_pm()
113 	 * engine->wakeref.counter or our timeline->active_count.  in __queue_and_release_pm()
129 	__intel_wakeref_defer_park(&engine->wakeref);  in __queue_and_release_pm()
134 static bool switch_to_kernel_context(struct intel_engine_cs *engine)  in switch_to_kernel_context()  argument
136 	struct intel_context *ce = engine->kernel_context;  in switch_to_kernel_context()
142 	if (intel_gt_is_wedged(engine->gt))  in switch_to_kernel_context()
146 	GEM_BUG_ON(ce->timeline->hwsp_ggtt != engine->status_page.vma);  in switch_to_kernel_context()
149 	if (engine->wakeref_serial == engine->serial)  in switch_to_kernel_context()
157 	 * else from creating a request on this engine. This also requires  in switch_to_kernel_context()
160 	 * This should hold true as we can only park the engine after  in switch_to_kernel_context()
167 	 * A new gpu user will be waiting on the engine-pm to start their  in switch_to_kernel_context()
168 	 * engine_unpark. New waiters are predicated on engine->wakeref.count  in switch_to_kernel_context()
170 	 * engine->wakeref.  in switch_to_kernel_context()
177 	 * engine->wakeref.count, we may see the request completion and retire  in switch_to_kernel_context()
178 	 * it causing an underflow of the engine->wakeref.  in switch_to_kernel_context()
189 	engine->wakeref_serial = engine->serial + 1;  in switch_to_kernel_context()
194 	if (likely(!__i915_request_commit(rq))) { /* engine should be idle! */  in switch_to_kernel_context()
208 	__queue_and_release_pm(rq, ce->timeline, engine);  in switch_to_kernel_context()
216 static void call_idle_barriers(struct intel_engine_cs *engine)  in call_idle_barriers()  argument
220 	llist_for_each_safe(node, next, llist_del_all(&engine->barrier_tasks)) {  in call_idle_barriers()
231 	struct intel_engine_cs *engine =  in __engine_park()  local
232 		container_of(wf, typeof(*engine), wakeref);  in __engine_park()
234 	engine->saturated = 0;  in __engine_park()
243 	if (!switch_to_kernel_context(engine))  in __engine_park()
246 	ENGINE_TRACE(engine, "parked\n");  in __engine_park()
248 	call_idle_barriers(engine); /* cleanup after wedging */  in __engine_park()
250 	intel_engine_park_heartbeat(engine);  in __engine_park()
251 	intel_breadcrumbs_park(engine->breadcrumbs);  in __engine_park()
254 	GEM_BUG_ON(engine->execlists.queue_priority_hint != INT_MIN);  in __engine_park()
256 	if (engine->park)  in __engine_park()
257 		engine->park(engine);  in __engine_park()
259 	engine->execlists.no_priolist = false;  in __engine_park()
262 	intel_gt_pm_put_async(engine->gt);  in __engine_park()
271 void intel_engine_init__pm(struct intel_engine_cs *engine)  in intel_engine_init__pm()  argument
273 	struct intel_runtime_pm *rpm = engine->uncore->rpm;  in intel_engine_init__pm()
275 	intel_wakeref_init(&engine->wakeref, rpm, &wf_ops);  in intel_engine_init__pm()
276 	intel_engine_init_heartbeat(engine);  in intel_engine_init__pm()