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1/* SPDX-License-Identifier: MIT */2/*3 * Copyright © 2019 Intel Corporation4 */5 6#ifndef INTEL_ENGINE_PM_H7#define INTEL_ENGINE_PM_H8 9#include "i915_drv.h"10#include "i915_request.h"11#include "intel_engine_types.h"12#include "intel_wakeref.h"13#include "intel_gt.h"14#include "intel_gt_pm.h"15 16static inline bool17intel_engine_pm_is_awake(const struct intel_engine_cs *engine)18{19 return intel_wakeref_is_active(&engine->wakeref);20}21 22static inline void __intel_engine_pm_get(struct intel_engine_cs *engine)23{24 __intel_wakeref_get(&engine->wakeref);25}26 27static inline void intel_engine_pm_get(struct intel_engine_cs *engine)28{29 intel_wakeref_get(&engine->wakeref);30}31 32static inline bool intel_engine_pm_get_if_awake(struct intel_engine_cs *engine)33{34 return intel_wakeref_get_if_active(&engine->wakeref);35}36 37static inline void intel_engine_pm_might_get(struct intel_engine_cs *engine)38{39 if (!intel_engine_is_virtual(engine)) {40 intel_wakeref_might_get(&engine->wakeref);41 } else {42 struct intel_gt *gt = engine->gt;43 struct intel_engine_cs *tengine;44 intel_engine_mask_t tmp, mask = engine->mask;45 46 for_each_engine_masked(tengine, gt, mask, tmp)47 intel_wakeref_might_get(&tengine->wakeref);48 }49 intel_gt_pm_might_get(engine->gt);50}51 52static inline void intel_engine_pm_put(struct intel_engine_cs *engine)53{54 intel_wakeref_put(&engine->wakeref);55}56 57static inline void intel_engine_pm_put_async(struct intel_engine_cs *engine)58{59 intel_wakeref_put_async(&engine->wakeref);60}61 62static inline void intel_engine_pm_put_delay(struct intel_engine_cs *engine,63 unsigned long delay)64{65 intel_wakeref_put_delay(&engine->wakeref, delay);66}67 68static inline void intel_engine_pm_flush(struct intel_engine_cs *engine)69{70 intel_wakeref_unlock_wait(&engine->wakeref);71}72 73static inline void intel_engine_pm_might_put(struct intel_engine_cs *engine)74{75 if (!intel_engine_is_virtual(engine)) {76 intel_wakeref_might_put(&engine->wakeref);77 } else {78 struct intel_gt *gt = engine->gt;79 struct intel_engine_cs *tengine;80 intel_engine_mask_t tmp, mask = engine->mask;81 82 for_each_engine_masked(tengine, gt, mask, tmp)83 intel_wakeref_might_put(&tengine->wakeref);84 }85 intel_gt_pm_might_put(engine->gt);86}87 88static inline struct i915_request *89intel_engine_create_kernel_request(struct intel_engine_cs *engine)90{91 struct i915_request *rq;92 93 /*94 * The engine->kernel_context is special as it is used inside95 * the engine-pm barrier (see __engine_park()), circumventing96 * the usual mutexes and relying on the engine-pm barrier97 * instead. So whenever we use the engine->kernel_context98 * outside of the barrier, we must manually handle the99 * engine wakeref to serialise with the use inside.100 */101 intel_engine_pm_get(engine);102 rq = i915_request_create(engine->kernel_context);103 intel_engine_pm_put(engine);104 105 return rq;106}107 108void intel_engine_init__pm(struct intel_engine_cs *engine);109 110void intel_engine_reset_pinned_contexts(struct intel_engine_cs *engine);111 112#endif /* INTEL_ENGINE_PM_H */113