17 	struct intel_engine_cs *engine =  in __engine_unpark()  local
18 		container_of(wf, typeof(*engine), wakeref);  in __engine_unpark()
21 	GEM_TRACE("%s\n", engine->name);  in __engine_unpark()
23 	intel_gt_pm_get(engine->gt);  in __engine_unpark()
27 	if (engine->default_state)  in __engine_unpark()
28 		map = i915_gem_object_pin_map(engine->default_state,  in __engine_unpark()
31 		engine->pinned_default_state = map;  in __engine_unpark()
33 	if (engine->unpark)  in __engine_unpark()
34 		engine->unpark(engine);  in __engine_unpark()
36 	intel_engine_init_hangcheck(engine);  in __engine_unpark()
73 static bool switch_to_kernel_context(struct intel_engine_cs *engine)  in switch_to_kernel_context()  argument
80 	if (engine->wakeref_serial == engine->serial)  in switch_to_kernel_context()
84 	if (intel_gt_is_wedged(engine->gt))  in switch_to_kernel_context()
92 	 * else from creating a request on this engine. This also requires  in switch_to_kernel_context()
95 	 * This should hold true as we can only park the engine after  in switch_to_kernel_context()
99 	flags = __timeline_mark_lock(engine->kernel_context);  in switch_to_kernel_context()
101 	rq = __i915_request_create(engine->kernel_context, GFP_NOWAIT);  in switch_to_kernel_context()
109 	engine->wakeref_serial = engine->serial + 1;  in switch_to_kernel_context()
116 	/* Release our exclusive hold on the engine */  in switch_to_kernel_context()
117 	__intel_wakeref_defer_park(&engine->wakeref);  in switch_to_kernel_context()
122 	__timeline_mark_unlock(engine->kernel_context, flags);  in switch_to_kernel_context()
128 	struct intel_engine_cs *engine =  in __engine_park()  local
129 		container_of(wf, typeof(*engine), wakeref);  in __engine_park()
131 	engine->saturated = 0;  in __engine_park()
140 	if (!switch_to_kernel_context(engine))  in __engine_park()
143 	GEM_TRACE("%s\n", engine->name);  in __engine_park()
145 	intel_engine_disarm_breadcrumbs(engine);  in __engine_park()
146 	intel_engine_pool_park(&engine->pool);  in __engine_park()
149 	GEM_BUG_ON(engine->execlists.queue_priority_hint != INT_MIN);  in __engine_park()
151 	if (engine->park)  in __engine_park()
152 		engine->park(engine);  in __engine_park()
154 	if (engine->pinned_default_state) {  in __engine_park()
155 		i915_gem_object_unpin_map(engine->default_state);  in __engine_park()
156 		engine->pinned_default_state = NULL;  in __engine_park()
159 	engine->execlists.no_priolist = false;  in __engine_park()
161 	intel_gt_pm_put(engine->gt);  in __engine_park()
170 void intel_engine_init__pm(struct intel_engine_cs *engine)  in intel_engine_init__pm()  argument
172 	struct intel_runtime_pm *rpm = &engine->i915->runtime_pm;  in intel_engine_init__pm()
174 	intel_wakeref_init(&engine->wakeref, rpm, &wf_ops);  in intel_engine_init__pm()