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/*
* Copyright (C) 2018-2020 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/helpers/kmd_notify_properties.h"
#include "shared/source/debug_settings/debug_settings_manager.h"
#include <cstdint>
using namespace NEO;
bool KmdNotifyHelper::obtainTimeoutParams(int64_t &timeoutValueOutput,
bool quickKmdSleepRequest,
uint32_t currentHwTag,
uint32_t taskCountToWait,
FlushStamp flushStampToWait,
bool forcePowerSavingMode) {
if (flushStampToWait == 0) {
return false;
}
if (DebugManager.flags.PowerSavingMode.get() || forcePowerSavingMode) {
timeoutValueOutput = 1;
return true;
}
int64_t multiplier = (currentHwTag < taskCountToWait) ? static_cast<int64_t>(taskCountToWait - currentHwTag) : 1;
if (!properties->enableKmdNotify && multiplier > KmdNotifyConstants::minimumTaskCountDiffToCheckAcLine) {
updateAcLineStatus();
}
quickKmdSleepRequest |= applyQuickKmdSleepForSporadicWait();
if (!properties->enableKmdNotify && !acLineConnected) {
timeoutValueOutput = KmdNotifyConstants::timeoutInMicrosecondsForDisconnectedAcLine;
} else if (quickKmdSleepRequest && properties->enableQuickKmdSleep) {
timeoutValueOutput = properties->delayQuickKmdSleepMicroseconds;
} else {
timeoutValueOutput = getBaseTimeout(multiplier);
}
return (properties->enableKmdNotify || !acLineConnected);
}
bool KmdNotifyHelper::applyQuickKmdSleepForSporadicWait() const {
if (properties->enableQuickKmdSleepForSporadicWaits) {
auto timeDiff = getMicrosecondsSinceEpoch() - lastWaitForCompletionTimestampUs.load();
if (timeDiff > properties->delayQuickKmdSleepForSporadicWaitsMicroseconds) {
return true;
}
}
return false;
}
void KmdNotifyHelper::updateLastWaitForCompletionTimestamp() {
lastWaitForCompletionTimestampUs = getMicrosecondsSinceEpoch();
}
int64_t KmdNotifyHelper::getMicrosecondsSinceEpoch() const {
auto now = std::chrono::high_resolution_clock::now().time_since_epoch();
return std::chrono::duration_cast<std::chrono::microseconds>(now).count();
}
void KmdNotifyHelper::overrideFromDebugVariable(int32_t debugVariableValue, int64_t &destination) {
if (debugVariableValue >= 0) {
destination = static_cast<int64_t>(debugVariableValue);
}
}
void KmdNotifyHelper::overrideFromDebugVariable(int32_t debugVariableValue, bool &destination) {
if (debugVariableValue >= 0) {
destination = !!(debugVariableValue);
}
}
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