db100e28fd
Check if the device is powered down prior to any engine activity, as, on such cases, all the TLBs were already invalidated, so an explicit TLB invalidation is not needed, thus reducing the performance regression impact due to it. This becomes more significant with GuC, as it can only do so when the connection to the GuC is awake. Cc: stable@vger.kernel.org Fixes:7938d61591("drm/i915: Flush TLBs before releasing backing store") Signed-off-by: Chris Wilson <chris.p.wilson@intel.com> Cc: Fei Yang <fei.yang@intel.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Acked-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/278a57a672edac75683f0818b292e95da583a5fe.1658924372.git.mchehab@kernel.org (cherry picked from commit4bedceaed1) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2019 Intel Corporation
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*/
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#ifndef INTEL_GT_PM_H
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#define INTEL_GT_PM_H
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#include <linux/types.h>
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#include "intel_gt_types.h"
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#include "intel_wakeref.h"
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static inline bool intel_gt_pm_is_awake(const struct intel_gt *gt)
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{
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return intel_wakeref_is_active(>->wakeref);
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}
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static inline void intel_gt_pm_get(struct intel_gt *gt)
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{
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intel_wakeref_get(>->wakeref);
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}
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static inline void __intel_gt_pm_get(struct intel_gt *gt)
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{
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__intel_wakeref_get(>->wakeref);
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}
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static inline bool intel_gt_pm_get_if_awake(struct intel_gt *gt)
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{
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return intel_wakeref_get_if_active(>->wakeref);
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}
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static inline void intel_gt_pm_might_get(struct intel_gt *gt)
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{
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intel_wakeref_might_get(>->wakeref);
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}
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static inline void intel_gt_pm_put(struct intel_gt *gt)
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{
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intel_wakeref_put(>->wakeref);
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}
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static inline void intel_gt_pm_put_async(struct intel_gt *gt)
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{
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intel_wakeref_put_async(>->wakeref);
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}
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static inline void intel_gt_pm_might_put(struct intel_gt *gt)
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{
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intel_wakeref_might_put(>->wakeref);
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}
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#define with_intel_gt_pm(gt, tmp) \
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for (tmp = 1, intel_gt_pm_get(gt); tmp; \
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intel_gt_pm_put(gt), tmp = 0)
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/**
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* with_intel_gt_pm_if_awake - if GT is PM awake, get a reference to prevent
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* it to sleep, run some code and then asynchrously put the reference
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* away.
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*
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* @gt: pointer to the gt
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* @wf: pointer to a temporary wakeref.
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*/
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#define with_intel_gt_pm_if_awake(gt, wf) \
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for (wf = intel_gt_pm_get_if_awake(gt); wf; intel_gt_pm_put_async(gt), wf = 0)
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static inline int intel_gt_pm_wait_for_idle(struct intel_gt *gt)
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{
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return intel_wakeref_wait_for_idle(>->wakeref);
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}
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void intel_gt_pm_init_early(struct intel_gt *gt);
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void intel_gt_pm_init(struct intel_gt *gt);
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void intel_gt_pm_fini(struct intel_gt *gt);
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void intel_gt_suspend_prepare(struct intel_gt *gt);
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void intel_gt_suspend_late(struct intel_gt *gt);
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int intel_gt_resume(struct intel_gt *gt);
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void intel_gt_runtime_suspend(struct intel_gt *gt);
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int intel_gt_runtime_resume(struct intel_gt *gt);
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ktime_t intel_gt_get_awake_time(const struct intel_gt *gt);
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static inline bool is_mock_gt(const struct intel_gt *gt)
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{
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return I915_SELFTEST_ONLY(gt->awake == -ENODEV);
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}
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#endif /* INTEL_GT_PM_H */
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