diff options
24 files changed, 2761 insertions, 6 deletions
diff --git a/db845c/device.mk b/db845c/device.mk index 122fabf..e944ead 100644 --- a/db845c/device.mk +++ b/db845c/device.mk @@ -47,6 +47,10 @@ PRODUCT_COPY_FILES += \ device/linaro/dragonboard/shared/hal/thermal/etc/thermal-db845c.json:$(TARGET_COPY_OUT_VENDOR)/etc/thermal.json endif +# Power HAL +PRODUCT_PACKAGES += \ + android.hardware.power@1.3-service.linaro-generic + # Set BT address PRODUCT_PACKAGES += bdaddr @@ -71,12 +71,6 @@ PRODUCT_COPY_FILES += \ frameworks/native/data/etc/android.hardware.bluetooth_le.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/android.hardware.bluetooth_le.xml # -# Power HAL -# -PRODUCT_PACKAGES += \ - android.hardware.power-service.example - -# # PowerStats HAL # PRODUCT_PACKAGES += \ diff --git a/shared/hal/power/hal/Android.bp b/shared/hal/power/hal/Android.bp new file mode 100644 index 0000000..05755b0 --- /dev/null +++ b/shared/hal/power/hal/Android.bp @@ -0,0 +1,81 @@ +// +// Copyright (C) 2023 Linaro Ltd. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package { + // See: http://go/android-license-faq + // A large-scale-change added 'default_applicable_licenses' to import + // all of the 'license_kinds' from "hardware_interfaces_license" + // to get the below license kinds: + // SPDX-license-identifier-Apache-2.0 + default_applicable_licenses: ["Android-Apache-2.0"], +} + +cc_binary { + name: "android.hardware.power@1.3-service.linaro-generic", + relative_install_path: "hw", + vendor: true, + init_rc: ["android.hardware.power@1.3-service.linaro-generic.rc"], + vintf_fragments: ["android.hardware.power@1.3-service.linaro-generic.xml"], + srcs: [ + "Power.cpp", + "PowerHintSession.cpp", + "Timer.cpp", + "main.cpp" + ], + + shared_libs: [ + "libbase", + "libjsoncpp", + "libutils", + "libbinder_ndk", + "libpowperf", + "android.hardware.power-V3-ndk", + ], + + cflags: ["-fexceptions"], + + strip: { + none: true, + }, +} + +cc_binary { + name: "tstPowerHAL", + relative_install_path: "hw", + vendor: true, + srcs: [ + "tstPowerHAL.cpp", + ], + + shared_libs: [ + "libbase", + "libutils", + "libbinder_ndk", + "libpowperf", + "android.hardware.power-V3-ndk", + ], + + cflags: ["-fexceptions"], +} + +filegroup { + name: "android.hardware.power@1.3-service.linaro-generic.xml", + srcs: ["android.hardware.power@1.3-service.linaro-generic.xml"], +} + +filegroup { + name: "android.hardware.power@1.3-service.linaro-generic.rc", + srcs: ["android.hardware.power@1.3-service.linaro-generic.rc"], +} diff --git a/shared/hal/power/hal/Power.cpp b/shared/hal/power/hal/Power.cpp new file mode 100644 index 0000000..dcac905 --- /dev/null +++ b/shared/hal/power/hal/Power.cpp @@ -0,0 +1,575 @@ +/* + * Copyright (C) 2023 Linaro Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define LOG_TAG "android.hardware.power@1.3-service.linaro-generic" + +#include <android-base/logging.h> + +#include <fstream> + +#include "Power.h" +#include "PowerHintSession.h" + +#include "libpowperf.h" + +namespace aidl::android::hardware::power::impl::linaro { + +using namespace std::chrono_literals; + +using ndk::ScopedAStatus; + +static const std::vector<Boost> BOOST_RANGE{ndk::enum_range<Boost>().begin(), + ndk::enum_range<Boost>().end()}; + +static const std::vector<Mode> MODE_RANGE{ndk::enum_range<Mode>().begin(), + ndk::enum_range<Mode>().end()}; + +#define DEFAULT_MODE static_cast<Mode>(std::numeric_limits<int32_t>::max()) +#define DEFAULT_BOOST static_cast<Boost>(std::numeric_limits<int32_t>::max()) + +/* + Modes: + ====== + + DOUBLE_TAP_TO_WAKE : This mode indicates that the device is allowed + to wake up when the screen is tapped twice. + + LOW_POWER : This mode indicates whether low power mode is + activated. This mode saves power consumption at the expense of + performance + + SUSTAINED_PERFORMANCE : Sustained performance mode is designed to + provide consistent performance levels over an extended period of + time. + + FIXED_PERFORMANCE : Sets the device to a fixed performance level + that lasts for at least 10 minutes under normal indoor + conditions. The difference between this mode and + SUSTAINED_PERFORMANCE mode is that: SUSTAINED_PERFORMANCE sets an + upper limit on performance for long-term stability; + FIXED_PERFORMANCE mode sets both an upper and lower limit on + performance so that any workload running in FIXED_PERFORMANCE mode + should perform at a repeatable time Completed within. + + VR : VR mode is designed to provide minimal guarantees of + performance for as long as the device can sustain it. + + LAUNCH : This mode indicates that the application has been launched + + EXPENSIVE_RENDERING : This mode indicates that the device is about + to enter an expensive rendering cycle. + + INTERACTIVE : This mode indicates that the device is about to + enter/leave the interactive state or the non-interactive state. The + non-interactive state may be entered after a period of inactivity in + order to conserve battery power during such periods of + inactivity. Typical actions are to turn the device on or off and + adjust the cpufreq parameters. This function can also call the + appropriate interface, allowing the kernel to suspend the system + into a low-power sleep state when entering a non-interactive state, + and disable low-power suspend when the system is in an interactive + state. When low-power suspend states are enabled, the kernel can + suspend the system without a wakelock being held. + + DEVICE_IDLE : This mode indicates that the device is in an idle + state. For detailed information, please refer to: Optimizing for Low + Power Mode and Application Standby Mode + + DISPLAY_INACTIVE : This mode means the display is off or still on, + but optimized for low power consumption. The following prompt + options are currently not part of the Android framework, but OEMs + may choose to implement power/performance optimizations. + + AUDIO_STREAMING_LOW_LATENCY : This mode means low latency audio is + active + + CAMERA_STREAMING_SECURE : This mode indicates that camera security + streaming is being initiated + + CAMERA_STREAMING_LOW : This mode indicates that camera + low-resolution streaming is being started. + + CAMERA_STREAMING_MID : This mode indicates that camera + mid-resolution streaming is being started. + + CAMERA_STREAMING_HIGH : This mode indicates that camera + high-resolution streaming is being started + + + Boost: + ====== + + INTERACTION: This boost is set when the user interacts with the + device, for example, a touch screen event is passed in. CPU and GPU + load may appear quickly, possibly increasing the speed of the CPU, + memory bus, etc. appropriately. Note that this is different from + INTERACTIVE mode, which only means that this interaction *may* + happen, not that it is actively happening. + + DISPLAY_UPDATE_IMMINENT: This boost indicates that the framework may + provide a new display frame soon. This means that the device should + ensure that the display processing path is powered on and ready to + receive that update. + + ML_ACC: This boost indicates that the device is interacting with the + ML accelerator + + AUDIO_LAUNCH: This boost indicates that the device is setting up an + audio stream. + + CAMERA_LAUNCH: This boost indicates that the Camera is being + launched + + CAMERA_SHOT: This boost indicates that the Camera is shooting + +*/ +bool Power::setBoost_Interaction(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setBoost_DisplayUpdateImminent(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setBoost_MlAcc(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setBoost_AudioLaunch(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setBoost_CameraLaunch(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setBoost_CameraShot(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +std::string Power::getUuid(void) +{ + std::ifstream ifs("/proc/sys/kernel/random/uuid"); + std::ostringstream oss; + + if (!ifs.is_open()) { + LOG(ERROR) << "Failed to open 'uuid' proc file"; + return ""; + } + + oss << ifs.rdbuf(); + + return oss.str(); +} + +ScopedAStatus Power::setBoost(Boost type, int32_t durationMs) +{ + int ret; + int duration; + BoostAction *boostAction; + + if (mBoostActions.find(type) == mBoostActions.end()) + return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); + + LOG(DEBUG) << "Power::setBoost[" << toString(type) << "]" + << ", duration= " << durationMs; + + boostAction = mBoostActions[type]; + + duration = durationMs ? durationMs : boostAction->mDefaultDurationMs; + + /* + * The caller has a knowledge of the duration of the requested + * boost. It gives us a value. With a zero value specified in + * argument, we check if there is a default value set for this + * boost action. + * + * Without a default duration, the boost will stay enabled + * until it is disabled manually, without a + * timeout. Obviously, that is not desirable because if the + * caller forgets to disable the boost, the power consumption + * will be higher until disabled. + * + * For instance, Boost::INTERACTION or + * Boost::DISPLAY_UPDATE_IMMINENT can give a zero duration + * without disabling the boost afterwards. It is up to the + * power HAL to define a default duration value to prevent a + * situation where the system is set with a high power + * consumption boost action and stays in this state. + */ + if (duration > 0) { + + LOG(DEBUG) << "Set cancelling boost[" << toString(type) + << "] action timer with duration=" + << duration; + + if (!boostAction->mTimer->start(duration * NS_PER_MILLISECOND, + mCancelBoostAction, boostAction)) { + LOG(ERROR) << "Failed to set timer for boost " << toString(type); + return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE); + } + } + + /* + * The caller disables the boost. We disable the associated + * timer without taking care if it was previously set. In all + * cases the result will be the same. If the timer expires + * while we are stopping, the timer 'stop()' function will + * take care of flushing the expiration. + */ + if (duration < 0) { + + LOG(DEBUG) << "Cancelling boost[" << toString(type) << "]"; + + if (!boostAction->mTimer->stop()) { + LOG(ERROR) << "Failed to cancel timer for boost[" + << toString(type) << "]"; + return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE); + } + } + + /* + * Call the associated boost action function. If the duration + * is negative, that means we disable the boost, otherwise we + * enable it. + */ + if (!std::invoke(boostAction->mAction, this, duration < 0 ? false : true)) { + LOG(ERROR) << "Boost[" << toString(type) << "] action failed"; + return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE); + } + + mCurrentBoost = duration < 0 ? DEFAULT_BOOST : type; + + return ScopedAStatus::ok(); +} + +bool Power::setMode_DoubleTapToWake(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_LowPower(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_SustainedPerformance(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_FixedPerformance(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_VR(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_Launch(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + if (powperf_set_global_latency(enabled ? 0 : INT_MAX)) { + LOG(ERROR) << "Failed to set global latency"; + return false; + } + + return true; +} + +bool Power::setMode_ExpensiveRendering(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_Interactive(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_DeviceIdle(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_DisplayInactive(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_AudioStreamingLowLatency(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_CameraStreamingSecure(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_CameraStreamingLow(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_CameraStreamingMid(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_CameraStreamingHigh(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_Game(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +bool Power::setMode_GameLoading(bool enabled) +{ + LOG(DEBUG) << "Power::" << __func__ << "(" + << enabled << ")"; + + return true; +} + +ScopedAStatus Power::setMode(Mode type, bool enabled) +{ + if (mModeActions.find(type) == mModeActions.end()) + return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); + + LOG(DEBUG) << "Power::setMode[" << toString(type) << "]" + << ", enabled=" << enabled; + + if (!std::invoke(mModeActions[type], this, enabled)) + return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); + + mCurrentMode = enabled ? type : DEFAULT_MODE; + + return ScopedAStatus::ok(); +} + +ScopedAStatus Power::isModeSupported(Mode type, bool *_aidl_return) +{ + *_aidl_return = type >= MODE_RANGE.front() && type <= MODE_RANGE.back(); + + LOG(DEBUG) << "Power::isModeSupported(" << toString(type) + << ")=" << *_aidl_return << std::endl; + + return ScopedAStatus::ok(); +} + +ScopedAStatus Power::isBoostSupported(Boost type, bool *_aidl_return) +{ + *_aidl_return = type >= BOOST_RANGE.front() && type <= BOOST_RANGE.back(); + + LOG(DEBUG) << "Power::isBoostSupported(" << toString(type) + << ")=" << *_aidl_return << std::endl; + + return ScopedAStatus::ok(); +} + +ScopedAStatus Power::createHintSession(int32_t tgid, int32_t uid, const std::vector<int32_t>& tids, + int64_t durationNanos, std::shared_ptr<IPowerHintSession> *_aidl_return) +{ + if (tids.size() == 0) { + LOG(ERROR) << "Empty thread list (empty)"; + return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); + } + + std::shared_ptr<PowerHintSession> powerHintSession = ndk::SharedRefBase::make<PowerHintSession>(); + + powerHintSession->mUuid = getUuid(); + + if (powerHintSession->mUuid.empty()) { + LOG(ERROR) << "Failed to generate uuid for Hint Session"; + return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); + } + + LOG(DEBUG) << "Created hint session tgid=" << tgid + << ", uid=" << uid << ", duration=" << durationNanos + << ", uuid=" << powerHintSession->mUuid; + + *_aidl_return = powerHintSession; + + return ScopedAStatus::ok(); +} + +ScopedAStatus Power::getHintSessionPreferredRate(int64_t* outNanoseconds) +{ + /* + * Depending on the current mode or boost, we may want a + * different update rate. + */ + *outNanoseconds = std::chrono::nanoseconds(100ms).count(); + + return ScopedAStatus::ok(); +} + +static std::map<std::string, int> PerfCapableDevices; + +static int ForEachPerfDevice(const char *device, void *data) +{ + Power *power = (Power *)data; + int id; + + id = powperf_get_device_id(device); + if (id < 0) { + LOG(ERROR) << "Failed to get device id"; + return -1; + } + + PerfCapableDevices[device] = id; + + LOG(DEBUG) << "Device '" << device << "' found with id=%" << id; + + return 0; +} + +Power::Power(Looper *looper) +{ + if (powperf_init()) { + LOG(ERROR) << "Failed to initialize power/performance library"; + throw("Failed to initialize power/performance library"); + } + + if (powperf_for_each_device(ForEachPerfDevice, this)) { + LOG(ERROR) << "Failed to enumerate performance device"; + throw("Failed to enumerate performance device"); + } + + mCancelBoostAction = new CancelBoostAction(); + if (!mCancelBoostAction) { + LOG(ERROR) << "Failed to allocate CancelBoostAction object"; + throw("Failed to allocate CancelBoostAction object"); + } + + /* + * As the enums are generated from AIDL, there is no value for + * out of Mode or Boost value. Let's trick the enum by setting + * it to int max + */ + mCurrentMode = static_cast<Mode>(std::numeric_limits<int32_t>::max()); + mCurrentBoost = static_cast<Boost>(std::numeric_limits<int32_t>::max()); + + /* + * At this point we don't care about freeing the resources, + * the power class is supposed to be a singleton and with a + * life cycle equal to the power service. So if the class is + * destroyed, the process associated with as well as the + * resources are freed + */ + mBoostActions[Boost::INTERACTION] = new BoostAction(&Power::setBoost_Interaction, 500, looper, this); + mBoostActions[Boost::DISPLAY_UPDATE_IMMINENT] = new BoostAction(&Power::setBoost_DisplayUpdateImminent, 250, looper, this); + mBoostActions[Boost::ML_ACC] = new BoostAction(&Power::setBoost_MlAcc, 0, looper, this); + mBoostActions[Boost::AUDIO_LAUNCH] = new BoostAction(&Power::setBoost_AudioLaunch, 0, looper, this); + mBoostActions[Boost::CAMERA_LAUNCH] = new BoostAction(&Power::setBoost_CameraLaunch, 0, looper, this); + mBoostActions[Boost::CAMERA_SHOT] = new BoostAction(&Power::setBoost_CameraShot, 0, looper, this); + + mModeActions[Mode::DOUBLE_TAP_TO_WAKE] = &Power::setMode_DoubleTapToWake; + mModeActions[Mode::LOW_POWER] = &Power::setMode_LowPower; + mModeActions[Mode::SUSTAINED_PERFORMANCE] = &Power::setMode_SustainedPerformance; + mModeActions[Mode::FIXED_PERFORMANCE] = &Power::setMode_FixedPerformance; + mModeActions[Mode::VR] = &Power::setMode_VR; + mModeActions[Mode::LAUNCH] = &Power::setMode_Launch; + mModeActions[Mode::EXPENSIVE_RENDERING] = &Power::setMode_ExpensiveRendering; + mModeActions[Mode::INTERACTIVE] = &Power::setMode_Interactive; + mModeActions[Mode::DEVICE_IDLE] = &Power::setMode_DeviceIdle; + mModeActions[Mode::DISPLAY_INACTIVE] = &Power::setMode_DisplayInactive; + mModeActions[Mode::AUDIO_STREAMING_LOW_LATENCY] = &Power::setMode_AudioStreamingLowLatency; + mModeActions[Mode::CAMERA_STREAMING_SECURE] = &Power::setMode_CameraStreamingSecure; + mModeActions[Mode::CAMERA_STREAMING_LOW] = &Power::setMode_CameraStreamingLow; + mModeActions[Mode::CAMERA_STREAMING_MID] = &Power::setMode_CameraStreamingMid; + mModeActions[Mode::CAMERA_STREAMING_HIGH] = &Power::setMode_CameraStreamingHigh; + mModeActions[Mode::GAME] = &Power::setMode_Game; + mModeActions[Mode::GAME_LOADING] = &Power::setMode_GameLoading; +} + +} // namespace aidl::android::hardware::power::impl::linaro diff --git a/shared/hal/power/hal/Power.h b/shared/hal/power/hal/Power.h new file mode 100644 index 0000000..7bd0e3e --- /dev/null +++ b/shared/hal/power/hal/Power.h @@ -0,0 +1,103 @@ +/* + * Copyright (C) 2023 Linaro Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#pragma once + +#include <aidl/android/hardware/power/BnPower.h> +#include <map> +#include <functional> + +#include "Timer.h" + +namespace aidl::android::hardware::power::impl::linaro { + +class Power : public BnPower { + +public: + ndk::ScopedAStatus setMode(Mode type, bool enabled) override; + ndk::ScopedAStatus isModeSupported(Mode type, bool* _aidl_return) override; + ndk::ScopedAStatus setBoost(Boost type, int32_t durationMs) override; + ndk::ScopedAStatus isBoostSupported(Boost type, bool* _aidl_return) override; + ndk::ScopedAStatus createHintSession(int32_t tgid, int32_t uid, + const std::vector<int32_t>& threadIds, + int64_t durationNanos, + std::shared_ptr<IPowerHintSession>* _aidl_return) override; + ndk::ScopedAStatus getHintSessionPreferredRate(int64_t* outNanoseconds) override; + Power(Looper *looper); + +private: + class BoostAction { + public: + BoostAction(bool (Power::*action)(bool), int defaultDurationMs, Looper *looper, Power *power): + mAction(action), mDefaultDurationMs(defaultDurationMs), mPower(power) + { + mTimer = new Timer(looper, false); + if (!mTimer) + throw("Failed to create timer"); + }; + + Timer *mTimer; + bool (Power::*mAction)(bool); + int mDefaultDurationMs; + Power *mPower; + }; + + class CancelBoostAction : public TimerCallback { + public: + virtual int handleTimer(void *data) { + BoostAction *boostAction = (typeof(boostAction))data; + std::invoke(boostAction->mAction, boostAction->mPower, false); + return 1; + } + }; + + bool setMode_DoubleTapToWake(bool enabled); + bool setMode_LowPower(bool enabled); + bool setMode_SustainedPerformance(bool enabled); + bool setMode_FixedPerformance(bool enabled); + bool setMode_VR(bool enabled); + bool setMode_Launch(bool enabled); + bool setMode_ExpensiveRendering(bool enabled); + bool setMode_Interactive(bool enabled); + bool setMode_DeviceIdle(bool enabled); + bool setMode_DisplayInactive(bool enabled); + bool setMode_AudioStreamingLowLatency(bool enabled); + bool setMode_CameraStreamingSecure(bool enabled); + bool setMode_CameraStreamingLow(bool enabled); + bool setMode_CameraStreamingMid(bool enabled); + bool setMode_CameraStreamingHigh(bool enabled); + bool setMode_Game(bool enabled); + bool setMode_GameLoading(bool enabled); + + bool setBoost_Interaction(bool enabled); + bool setBoost_DisplayUpdateImminent(bool enabled); + bool setBoost_MlAcc(bool enabled); + bool setBoost_AudioLaunch(bool enabled); + bool setBoost_CameraLaunch(bool enabled); + bool setBoost_CameraShot(bool enabled); + + std::string getUuid(void); + + std::map<int32_t, std::shared_ptr<IPowerHintSession>> mPowerHintSessions; + std::map<Mode, bool(Power::*)(bool)> mModeActions; + std::map<Boost, BoostAction *> mBoostActions; + + CancelBoostAction *mCancelBoostAction; + + Mode mCurrentMode; + Boost mCurrentBoost; +}; + +} // namespace aidl::android::hardware::power::impl::linaro diff --git a/shared/hal/power/hal/PowerHintSession.cpp b/shared/hal/power/hal/PowerHintSession.cpp new file mode 100644 index 0000000..409e0f4 --- /dev/null +++ b/shared/hal/power/hal/PowerHintSession.cpp @@ -0,0 +1,156 @@ +/* + * Copyright (C) 2023 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "PowerHintSession.h" + +#include <android-base/logging.h> + +namespace aidl::android::hardware::power::impl::linaro { + +using ndk::ScopedAStatus; + +PowerHintSession::PowerHintSession(): + mPeriodNsAvg(0), mPeriodNsStddev(0), + mPeriodNsLastUpdate(0) {} + +ScopedAStatus PowerHintSession::updateTargetWorkDuration(int64_t targetDurationNs) +{ + LOG(DEBUG) << __func__ << ": PowerHintSesion uuid=" << mUuid + << "targetDurationNs=" << targetDurationNs; + + return ScopedAStatus::ok(); +} + +ScopedAStatus PowerHintSession::reportActualWorkDuration(const std::vector<WorkDuration>& workDuration) +{ + LOG(DEBUG) << __func__ << ": PowerHintSesion uuid=" << mUuid; + + if (workDuration.empty()) { + LOG(DEBUG) << "Empty work durations reporting"; + return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT); + } + + LOG(DEBUG) << "Reported working duration:"; + + /* + * The workDuration structure gives a couple of information. + * + * - timeStampNanos : when the work duration measurement was done + * - durationNanos : the work duration itself + * + * In order to optimize the power and the performance, we need + * some information we can deduce from the work duration + * reporting: + * + * - Are the work durations periodic ? + * + * ... <---WD---><--something else--><---WD--><-nothing-> ... + * + * - Are the periods between work durations periodic ? + * + * ... <-WD-><----nonWD----><---WD---><----nonWD----><--WD--> ... + * + * There is no documentation telling if the timestamp was read + * before or after the measurement of the workload + * duration. That is coming from the client side and we don't + * have control on how it measures the duration and the + * timestamp order. However, dead code reading shows the + * report of the duration is called with systemTime(). We can + * reasonably assume the timestamp is after the workload + * duration measurement. + * + * <---WD0--->|<-----nonWD0-----><--WD1-->|<--nonWD1--><-WD2->| + * v v v + * ts0 ts1 ts2 + * + * Information extracted: + * + * 1. Duration of nonWD0 : (ts1 - WD1) - ts0 + * nonWD1 : (ts2 - WD2) - ts1 + * + * 2. If the nonWD durations are periodic, then we can safely + * compute when the next WD will happen and take some + * performance wise decision to increase the workload + * reactivity. For instance, wakeup 100ms before the + * expected next WD and set a cpu/dma zero latency. + * + * Information infered: + * + * 1. Target Work duration vs Work duration average + * + * Target WD > WDavg --> Increase the performance, decrease the latency + * Target WD < WDavg --> Increase the latency, decrease the performance + * + */ + for (int i = 0; i < workDuration.size(); i++) { + + int64_t periodNs; + + LOG(DEBUG) << i << ":\t" << workDuration[i].toString(); + + if (!mPeriodNsLastUpdate) { + mPeriodNsLastUpdate = workDuration[i].timeStampNanos; + continue; + } + + periodNs = workDuration[i].timeStampNanos - mPeriodNsLastUpdate; + mPeriodNsLastUpdate = workDuration[i].timeStampNanos; + + pushPeriod(periodNs); + } + + return ScopedAStatus::ok(); +} + +ScopedAStatus PowerHintSession::pause() +{ + LOG(DEBUG) << __func__ << ": PowerHintSesion uuid=" << mUuid; + + return ScopedAStatus::ok(); +} + +ScopedAStatus PowerHintSession::resume() +{ + LOG(DEBUG) << __func__ << ": PowerHintSesion uuid=" << mUuid; + + return ScopedAStatus::ok(); +} + +ScopedAStatus PowerHintSession::close() +{ + LOG(DEBUG) << __func__ << ": PowerHintSesion uuid=" << mUuid; + + return ScopedAStatus::ok(); +} + +void PowerHintSession::pushPeriod(int64_t newValue) +{ + const int64_t ema_alpha_val = 64; + const int64_t ema_alpha_shift = 7; + int64_t diff; + + if (!mPeriodNsAvg) { + mPeriodNsAvg = newValue; + return; + } + + diff = (newValue - mPeriodNsAvg) * ema_alpha_val; + + mPeriodNsAvg = mPeriodNsAvg + (diff >> ema_alpha_shift); + + LOG(DEBUG) << "Period=" << newValue << ", emaPeriod=" << mPeriodNsAvg; +} + +} // namespace aidl::android::hardware::power::impl::linaro diff --git a/shared/hal/power/hal/PowerHintSession.h b/shared/hal/power/hal/PowerHintSession.h new file mode 100644 index 0000000..e14dfdf --- /dev/null +++ b/shared/hal/power/hal/PowerHintSession.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2023 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#pragma once + +#include <aidl/android/hardware/power/BnPowerHintSession.h> +#include <aidl/android/hardware/power/WorkDuration.h> + +namespace aidl::android::hardware::power::impl::linaro { + +class PowerHintSession : public BnPowerHintSession { + +public: + explicit PowerHintSession(); + ndk::ScopedAStatus updateTargetWorkDuration(int64_t targetDurationNs) override; + ndk::ScopedAStatus reportActualWorkDuration( + const std::vector<WorkDuration>& durations) override; + ndk::ScopedAStatus pause() override; + ndk::ScopedAStatus resume() override; + ndk::ScopedAStatus close() override; + + std::string mUuid; +private: + void pushPeriod(int64_t newValue); + + int64_t mPeriodNsAvg; + int64_t mPeriodNsStddev; + int64_t mPeriodNsLastUpdate; + + int64_t mWorkDurationNsLastUpdate; +}; + +} // namespace aidl::android::hardware::power::impl::linaro diff --git a/shared/hal/power/hal/Timer.cpp b/shared/hal/power/hal/Timer.cpp new file mode 100644 index 0000000..b57192f --- /dev/null +++ b/shared/hal/power/hal/Timer.cpp @@ -0,0 +1,148 @@ +/* + * Copyright (C) 2023 Linaro Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define LOG_TAG "android.hardware.power@1.3-service.linaro-generic" + +#include <sys/poll.h> +#include <sys/timerfd.h> + +#include <iostream> + +#include <android-base/logging.h> + +#include "Timer.h" + +namespace aidl::android::hardware::power::impl::linaro { + +int TimerCallback::handleEvent(int fd, __attribute__((unused))int events, void *data) +{ + struct itimerspec iti; + uint64_t expirations; + + if (read(fd, &expirations, sizeof(expirations)) < 0) { + LOG(DEBUG) << "Failed to read timer data"; + return 0; + } + + LOG(DEBUG) << "Handling timer id=" << fd + << ", expirations=" << expirations; + + if (!handleTimer(data)) { + mTimer->stop(); + return 0; + } + + return 1; +} + +Timer::Timer(Looper *looper, bool periodic): mPeriodic(periodic), mLooper(looper) +{ + mTimerFd = timerfd_create(CLOCK_MONOTONIC, 0); + if (mTimerFd < 0) + throw("Failed to create timer"); + + LOG(DEBUG) << "Created timer id=" << mTimerFd; +} + +bool Timer::start(int64_t durationNs, TimerCallback *timerCallback, void *data) +{ + struct timespec ts = { + .tv_sec = durationNs / NS_PER_SECOND, + .tv_nsec = durationNs % NS_PER_SECOND, + }; + + struct itimerspec iti = {}; + + if (mPeriodic) + iti.it_interval = ts; + + iti.it_value = ts; + + if (timerfd_settime(mTimerFd, 0, &iti, NULL) < 0) { + LOG(DEBUG) << "Failed to set timer duration"; + return false; + } + + if (!mLooper->addFd(mTimerFd, 0, Looper::EVENT_INPUT, + timerCallback, data)) { + LOG(DEBUG) << "Failed to add skin temperature callback to mainloop"; + return false; + } + + timerCallback->mTimer = this; + + LOG(DEBUG) << "Started timer id=" << mTimerFd + << " with duration=" << durationNs << " nsec"; + + return true; +} + +bool Timer::stop(void) +{ + uint64_t expirations; + + struct itimerspec iti = { + .it_interval = { 0, 0 }, + .it_value = { 0, 0 }, + }; + + struct pollfd pfd { + .fd = mTimerFd, + .events = 0, + }; + + if (timerfd_settime(mTimerFd, 0, &iti, NULL) < 0) { + LOG(DEBUG) << "Failed to stop timer"; + return false; + } + + if (!mLooper->removeFd(mTimerFd)) { + LOG(DEBUG) << "Failed to remove file descriptor from looper"; + return false; + } + + /* + * If the timer expired while stopping it, we want the event + * to be consumed from the file descriptor to prevent an + * immediate timeout the next time the timer is started. + */ + if (poll(&pfd, 1, 0) > 0) { + + LOG(DEBUG) << "Timer expired before stopping it, flushing data"; + + if (read(mTimerFd, &expirations, sizeof(expirations)) < 0) { + LOG(DEBUG) << "Failed to read timer data"; + return 0; + } + } + + LOG(DEBUG) << "Stopped timer id=" << mTimerFd; + + return true; +} + +bool Timer::isRunning(void) +{ + struct itimerspec iti = {}; + + if (timerfd_gettime(mTimerFd, &iti)) { + LOG(DEBUG) << "Failed to get timer time"; + return false; + } + + return (iti.it_value.tv_sec || iti.it_value.tv_sec); +} + +} // namespace aidl::android::hardware::power::impl::linaro diff --git a/shared/hal/power/hal/Timer.h b/shared/hal/power/hal/Timer.h new file mode 100644 index 0000000..a20e65a --- /dev/null +++ b/shared/hal/power/hal/Timer.h @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2023 Linaro Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#pragma once + +#include <android-base/logging.h> +#include <utils/Looper.h> + +#define NS_PER_SECOND 1000000000LL +#define NS_PER_MILLISECOND 1000000LL +#define NS_PER_MICROSECOND 1000LL + +using ::android::Looper; +using ::android::LooperCallback; + +namespace aidl::android::hardware::power::impl::linaro { + +class TimerCallback; + +class Timer { +private: + bool mPeriodic; + Looper *mLooper; + +protected: + int mTimerFd; +public: + Timer(Looper *looper, bool periodic); + bool start(int64_t durationNs, TimerCallback *timerCallback, void *data); + bool stop(); + bool isRunning(); +}; + +class TimerCallback : public LooperCallback { +public: + int handleEvent(int fd, int events, void *data); + virtual int handleTimer(void *data) = 0; + Timer *mTimer; +}; + +} // namespace aidl::android::hardware::power::impl::linaro diff --git a/shared/hal/power/hal/android.hardware.power@1.3-service.linaro-generic.rc b/shared/hal/power/hal/android.hardware.power@1.3-service.linaro-generic.rc new file mode 100644 index 0000000..1b8465f --- /dev/null +++ b/shared/hal/power/hal/android.hardware.power@1.3-service.linaro-generic.rc @@ -0,0 +1,8 @@ +service hal_power /vendor/bin/hw/android.hardware.power@1.3-service.linaro-generic + interface android.hardware.power@1.0::IPower generic + interface android.hardware.power@1.1::IPower generic + interface android.hardware.power@1.2::IPower generic + interface android.hardware.power@1.3::IPower generic + class hal + user system + group system diff --git a/shared/hal/power/hal/android.hardware.power@1.3-service.linaro-generic.xml b/shared/hal/power/hal/android.hardware.power@1.3-service.linaro-generic.xml new file mode 100644 index 0000000..8d25d58 --- /dev/null +++ b/shared/hal/power/hal/android.hardware.power@1.3-service.linaro-generic.xml @@ -0,0 +1,8 @@ +<!-- Copyright 2023 Linaro Ltd. --> +<manifest version="1.0" type="device"> + <hal format="aidl"> + <name>android.hardware.power</name> + <version>3</version> + <fqname>IPower/default</fqname> + </hal> +</manifest> diff --git a/shared/hal/power/hal/main.cpp b/shared/hal/power/hal/main.cpp new file mode 100644 index 0000000..181fc9f --- /dev/null +++ b/shared/hal/power/hal/main.cpp @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2020 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "Power.h" + +#include <android-base/logging.h> +#include <android/binder_manager.h> +#include <android/binder_process.h> + +using aidl::android::hardware::power::impl::linaro::Power; + +static int transportCallback(__attribute__((unused)) int fd, __attribute__((unused)) int event, + __attribute__((unused)) void *data) +{ + ABinderProcess_handlePolledCommands(); + return 1; +} + +int main() +{ + int fd; + Looper *looper; + + looper = new Looper(false); + if (!looper) + return EXIT_FAILURE; + + std::shared_ptr<Power> power = ndk::SharedRefBase::make<Power>(looper); + + ABinderProcess_setThreadPoolMaxThreadCount(0); + + const std::string instance = std::string() + Power::descriptor + "/default"; + binder_status_t status = AServiceManager_addService(power->asBinder().get(), instance.c_str()); + + CHECK_EQ(status, STATUS_OK); + + ABinderProcess_setupPolling(&fd); + + looper->addFd(fd, 0, Looper::EVENT_INPUT, transportCallback, NULL); + + looper->pollAll(-1); + + return EXIT_FAILURE; // should not reach +} diff --git a/shared/hal/power/hal/tstPowerHAL.cpp b/shared/hal/power/hal/tstPowerHAL.cpp new file mode 100644 index 0000000..cf79dcf --- /dev/null +++ b/shared/hal/power/hal/tstPowerHAL.cpp @@ -0,0 +1,239 @@ +/* + * Copyright (C) 2023 Linaro Ltd. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#define LOG_TAG "tstPowerlHal" + +#include <aidl/android/hardware/power/BnPower.h> +#include <aidl/android/hardware/power/BnPowerHintSession.h> +#include <android-base/properties.h> +#include <android/binder_ibinder.h> +#include <android/binder_manager.h> +#include <android/binder_process.h> +#include <android/binder_status.h> + +#include <iostream> + +#include "Power.h" +#include "Timer.h" + +using ::android::sp; +using ::android::Looper; + +using ::aidl::android::hardware::power::IPower; +using ::aidl::android::hardware::power::Boost; +using ::aidl::android::hardware::power::Mode; +using ::aidl::android::hardware::power::impl::linaro::Power; +using ::aidl::android::hardware::power::impl::linaro::Timer; +using ::aidl::android::hardware::power::impl::linaro::TimerCallback; + +int testBoostSupported(std::shared_ptr<IPower> power) +{ + ndk::ScopedAStatus status; + bool supported; + + Boost boosts[] = { + Boost::INTERACTION, + Boost::DISPLAY_UPDATE_IMMINENT, + Boost::ML_ACC, + Boost::AUDIO_LAUNCH, + Boost::CAMERA_LAUNCH, + Boost::CAMERA_SHOT, + }; + + for (int i = 0; i < sizeof(boosts) / sizeof(boosts[0]); i++) { + + status = power->isBoostSupported(boosts[i], &supported); + if (!status.isOk()) { + std::cout << "Failed to check if boost is supported" << std::endl; + return -1; + } + + std::cout << "Boost[" << toString(boosts[i]) << "]"; + + if (supported) + std::cout << " is supported"; + else + std::cout << " is not supported"; + + std::cout << std::endl; + } + + return 0; +} + +int testBoost(std::shared_ptr<IPower> power) +{ + ndk::ScopedAStatus status; + bool supported; + + Boost boosts[] = { + Boost::INTERACTION, + Boost::DISPLAY_UPDATE_IMMINENT, + Boost::ML_ACC, + Boost::AUDIO_LAUNCH, + Boost::CAMERA_LAUNCH, + Boost::CAMERA_SHOT, + }; + + for (int i = 0; i < sizeof(boosts) / sizeof(boosts[0]); i++) { + + status = power->setBoost(boosts[i], 2000); + if (!status.isOk()) { + std::cout << "Failed to set boost" << std::endl; + return -1; + } + + std::cout << "Set Boost[" << toString(boosts[i]) + << "] for 2000ms" << std::endl; + } + + return 0; +} + +int testModeSupported(std::shared_ptr<IPower> power) +{ + ndk::ScopedAStatus status; + bool supported; + + Mode modes[] = { + Mode::DOUBLE_TAP_TO_WAKE, + Mode::LOW_POWER, + Mode::SUSTAINED_PERFORMANCE, + Mode::FIXED_PERFORMANCE, + Mode::VR, + Mode::LAUNCH, + Mode::EXPENSIVE_RENDERING, + Mode::INTERACTIVE, + Mode::DEVICE_IDLE, + Mode::DISPLAY_INACTIVE, + Mode::AUDIO_STREAMING_LOW_LATENCY, + Mode::CAMERA_STREAMING_SECURE, + Mode::CAMERA_STREAMING_LOW, + Mode::CAMERA_STREAMING_MID, + Mode::CAMERA_STREAMING_HIGH, + Mode::GAME, + Mode::GAME_LOADING, + }; + + for (int i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) { + + status = power->isModeSupported(modes[i], &supported); + if (!status.isOk()) { + std::cout << "Failed to check if mode is supported" << std::endl; + return -1; + } + + std::cout << "Mode[" << toString(modes[i]) << "]"; + + if (supported) + std::cout << " is supported"; + else + std::cout << " is not supported"; + + std::cout << std::endl; + } + + return 0; +} + +int testMode(std::shared_ptr<IPower> power) +{ + ndk::ScopedAStatus status; + bool supported; + + Mode modes[] = { + Mode::DOUBLE_TAP_TO_WAKE, + Mode::LOW_POWER, + Mode::SUSTAINED_PERFORMANCE, + Mode::FIXED_PERFORMANCE, + Mode::VR, + Mode::LAUNCH, + Mode::EXPENSIVE_RENDERING, + Mode::INTERACTIVE, + Mode::DEVICE_IDLE, + Mode::DISPLAY_INACTIVE, + Mode::AUDIO_STREAMING_LOW_LATENCY, + Mode::CAMERA_STREAMING_SECURE, + Mode::CAMERA_STREAMING_LOW, + Mode::CAMERA_STREAMING_MID, + Mode::CAMERA_STREAMING_HIGH, + Mode::GAME, + Mode::GAME_LOADING, + }; + + for (int i = 0; i < sizeof(modes) / sizeof(modes[0]); i++) { + + status = power->setMode(modes[i], true); + if (!status.isOk()) { + std::cout << "Failed to set mode " << toString(modes[i]) << std::endl; + return -1; + } + + std::cout << "Enable Mode[" << toString(modes[i]) << "]" << std::endl; + + sleep(1); + + status = power->setMode(modes[i], false); + if (!status.isOk()) { + std::cout << "Failed to unset mode " << toString(modes[i]) << std::endl; + return -1; + } + + std::cout << "Disable Mode[" << toString(modes[i]) << "]" << std::endl; + } + + return 0; +} + +int main(int, char *[]) +{ + std::string service("android.hardware.power.IPower/default"); + std::shared_ptr<IPower> power; + AIBinder* binder; + + binder = AServiceManager_waitForService(service.c_str()); + if (!binder) { + std::cout << "Failed to get service: " << service << std::endl; + return 1; + } + + power = IPower::fromBinder(ndk::SpAIBinder(binder)); + if (!power) { + std::cout << "Failed to get service from binder" << std::endl; + return 1; + } + + if (testModeSupported(power)) { + std::cout << "Mode supported test failed" << std::endl; + return 1; + } + + if (testMode(power)) { + std::cout << "Mode supported test failed" << std::endl; + return 1; + } + + if (testBoostSupported(power)) { + std::cout << "Boost supported test failed" << std::endl; + return 1; + } + + if (testBoost(power)) { + std::cout << "Boost supported test failed" << std::endl; + return 1; + } + + return 0; +} diff --git a/shared/hal/power/lib/libpowperf/Android.bp b/shared/hal/power/lib/libpowperf/Android.bp new file mode 100644 index 0000000..ee5a945 --- /dev/null +++ b/shared/hal/power/lib/libpowperf/Android.bp @@ -0,0 +1,68 @@ +// Copyright 2021 The Android Open Source Project + +package { + default_applicable_licenses: ["external_libpowperf_license"], +} + +// Added automatically by a large-scale-change that took the approach of +// 'apply every license found to every target'. While this makes sure we respect +// every license restriction, it may not be entirely correct. +// +// e.g. GPL in an MIT project might only apply to the contrib/ directory. +// +// Please consider splitting the single license below into multiple licenses, +// taking care not to lose any license_kind information, and overriding the +// default license using the 'licenses: [...]' property on targets as needed. +// +// For unused files, consider creating a 'fileGroup' with "//visibility:private" +// to attach the license to, and including a comment whether the files may be +// used in the current project. +// See: http://go/android-license-faq +license { + name: "external_libpowperf_license", + visibility: [":__subpackages__"], + license_kinds: [ + "SPDX-license-identifier-LGPL", + "SPDX-license-identifier-LGPL-2.1", + "SPDX-license-identifier-LGPL-3.0", + ], + license_text: [ + "COPYING.txt", + ], +} + +cc_library_headers { + name: "libpowperf_headers", + export_include_dirs: ["include"], +} + +cc_library_shared { + host_supported: true, + vendor_available: true, + product_available: true, + + target: { + linux_bionic: { + enabled: true, + }, + }, + + name: "libpowperf", + srcs: [ + "src/perf.c", + ], + + local_include_dirs: [ + "include", + ], + + export_include_dirs: ["include"], + + cflags: [ + "-g", + "-Wall", + "-Werror", + "-Wno-sign-compare", + "-Wno-unused-parameter", + ], +} diff --git a/shared/hal/power/lib/libpowperf/COPYING.txt b/shared/hal/power/lib/libpowperf/COPYING.txt new file mode 100644 index 0000000..ca4f73b --- /dev/null +++ b/shared/hal/power/lib/libpowperf/COPYING.txt @@ -0,0 +1,456 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts + as the successor of the GNU Library Public License, version 2, hence + the version number 2.1.] + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +Licenses are intended to guarantee your freedom to share and change +free software--to make sure the software is free for all its users. + + This license, the Lesser General Public License, applies to some +specially designated software packages--typically libraries--of the +Free Software Foundation and other authors who decide to use it. You +can use it too, but we suggest you first think carefully about whether +this license or the ordinary General Public License is the better +strategy to use in any particular case, based on the explanations below. + + When we speak of free software, we are referring to freedom of use, +not price. 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So + * instead of open / read / close, let's open the file descriptor and + * keep it opened during all the life time of the library. However, we + * don't want those fd to be leaked in child processes application, so + * we should the close-on-exec flag. + */ +typedef enum { + LATENCY, + MIN_FREQ, + MAX_FREQ, + CUR_FREQ, + SET_FREQ, + MAX_ATTRS, +} perf_type_t; + +#define HZ_UNIT 1 +#define KHZ_UNIT 1000 +#define MHZ_UNIT (KHZ_UNIT * 1000) +#define GHZ_UNIT (MHZ_UNIT * 1000) + +#define KHZ_TO_MHZ(__value) (__value / 1000) +#define MHZ_TO_KHZ(__value) (__value * 1000) +#define HZ_TO_MHZ(__value) (KHZ_TO_MHZ(__value) / 1000) + +struct dev_sysfs_perf { + char device[PATH_MAX]; + int fds[MAX_ATTRS]; + int frequencies[MAX_FREQUENCIES]; + int nr_frequency; +}; + +struct attrs { + const char *attr; + mode_t mode; +}; + +static struct dev_sysfs_perf *dev_sysfs_perfs; +static int count = 0; + +static int set_device_perf(int id, perf_type_t perf_type, int value) +{ + int len = 128; + char value_str[len]; + + len = snprintf(value_str, len - 1, "%d\n", value); + if (len < 0) + return -1; + + if (pwrite(dev_sysfs_perfs[id].fds[perf_type], value_str, len, 0) < 0) + return -1; + + return 0; +} + +static int get_device_perf(int id, perf_type_t perf_type) +{ + int len = 128; + char value_str[len]; + + if (pread(dev_sysfs_perfs[id].fds[perf_type], value_str, len, 0) < 0) + return -1; + + return atoi(value_str); +} + +static int is_device_perf_supported(int id, perf_type_t perf_type) +{ + return (dev_sysfs_perfs[id].fds[perf_type] != -1); +} + +int powperf_set_device_latency(int id, int latency_us) +{ + return set_device_perf(id, LATENCY, latency_us); +} + +int powperf_get_device_latency(int id) +{ + return get_device_perf(id, LATENCY); +} + +int powperf_device_latency_supported(int id) +{ + return is_device_perf_supported(id, LATENCY); +} + +int powperf_set_device_min_frequency(int id, int frequency) +{ + return set_device_perf(id, MIN_FREQ, frequency); +} + +int powperf_get_device_min_frequency(int id) +{ + return get_device_perf(id, MIN_FREQ); +} + +int powperf_set_device_max_frequency(int id, int frequency) +{ + return set_device_perf(id, MAX_FREQ, frequency); +} + +int powperf_get_device_max_frequency(int id) +{ + return get_device_perf(id, MAX_FREQ); +} + +int powperf_set_device_frequency(int id, int frequency) +{ + return set_device_perf(id, SET_FREQ, frequency); +} + +int powperf_get_device_frequency(int id) +{ + return get_device_perf(id, CUR_FREQ); +} + +int powperf_set_global_latency(int latency_us) +{ + int ret; + + if (latency_us == INT_MAX) { + close(cpu_dma_latency_fd); + cpu_dma_latency_fd = -1; + return 0; + } + + if (cpu_dma_latency_fd == -1) { + cpu_dma_latency_fd = open(CPU_DMA_LATENCY_DEV, O_CLOEXEC | O_RDWR); + if (cpu_dma_latency_fd < 0) + return -1; + } + + ret = pwrite(cpu_dma_latency_fd, &latency_us, sizeof(latency_us), 0); + if (ret < 0) { + close(cpu_dma_latency_fd); + cpu_dma_latency_fd = -1; + } + + return 0; +} + +int powperf_get_global_latency(void) +{ + int latency_us; + int ret; + + if (cpu_dma_latency_fd == -1) + return INT_MAX; + + ret = pread(cpu_dma_latency_fd, &latency_us, sizeof(latency_us), 0); + if (ret < 0) + return ret; + + return latency_us; +} + +int powperf_get_device_id(const char *device) +{ + int i; + + for (i = 0; i < count; i++) { + if (!strcmp(device, dev_sysfs_perfs[i].device)) + return i; + } + + return -1; +} + +int powperf_for_each_device(int (*cb)(const char *device, void *data), void *data) +{ + int i; + + for (i = 0; i < count; i++) { + if (cb(dev_sysfs_perfs[i].device, data) < 0) + return -1; + } + + return 0; +} + +int powperf_for_each_frequency(int id, int (*cb)(int frequency, void *data), void *data) +{ + int i; + + for (i = 0; i < dev_sysfs_perfs[id].nr_frequency; i++) + if (cb(dev_sysfs_perfs[id].frequencies[i], data) < 0) + return -1; + + return 0; +} + +static int __dev_sysfs_get_frequencies(int dirfd, struct dev_sysfs_perf *perf, + const char *frequencies) +{ + /* + * The maximum sysfs file size is a page size. Even if the + * content would be largely under this value, we stick to the + * sysfs standard. + */ + size_t size = getpagesize(); + char buffer[size]; + char *saveptr, *token; + FILE *f; + int fd, ret = -1; + + perf->nr_frequency = 0; + + /* + * Retrieve the list of the available frequencies + */ + fd = openat(dirfd, frequencies, O_RDONLY); + if (fd < 0) + return -1; + + f = fdopen(fd, "r"); + if (!f) + goto out; + + if (!fgets(buffer, size, f)) + goto out; + + token = strtok_r(buffer, " ", &saveptr); + while (token) { + perf->frequencies[perf->nr_frequency] = atoi(token); + perf->nr_frequency++; + token = strtok_r(NULL, " \n", &saveptr); + } + + ret = 0; +out: + fclose(f); + close(fd); + + return ret; +} + +static int __dev_sysfs_perf_init(int dirfd, + struct dev_sysfs_perf *perf, + struct attrs attrs[], + const char *frequencies) +{ + int i; + + for (i = 0; i < MAX_ATTRS; i++) { + + perf->fds[i] = -1; + + if (attrs[i].attr[0] == '\0') + continue; + + perf->fds[i] = openat(dirfd, attrs[i].attr, + attrs[i].mode | O_CLOEXEC); + + /* + * We don't check if the file was correctly opened or + * not. There may be some permissions preventing us to + * access those files. For instance on Android, + * setting the current frequency is a file belonging + * to 'root' for writing but the services are uid + * 'system'. + * + * The usage of the different API will fail giving us + * the indication the feature is not accessible. + */ + } + + return __dev_sysfs_get_frequencies(dirfd, perf, frequencies); +} + +static int devfreq_sysfs_perf_init(void) +{ + DIR *dir; + int dirfd; + struct dirent *dirent; + + struct attrs attrs[] = { + [LATENCY] = { "", 0 }, + [MIN_FREQ] = { DEV_MIN_FREQ, O_RDWR }, + [MAX_FREQ] = { DEV_MAX_FREQ, O_RDWR }, + [CUR_FREQ] = { DEV_CUR_FREQ, O_RDONLY }, + [SET_FREQ] = { "", 0 } + }; + + char path[PATH_MAX]; + + dir = opendir(SYS_CLASS_DEVFREQ); + if (!dir) + return -1; + + while ((dirent = readdir(dir))) { + + if (dirent->d_name[0] == '.') + continue; + + dev_sysfs_perfs = realloc(dev_sysfs_perfs, + sizeof(*dev_sysfs_perfs) * (count + 1)); + if (!dev_sysfs_perfs) + return -1; + + sprintf(dev_sysfs_perfs[count].device, "%s", dirent->d_name); + sprintf(path, "%s/%s", SYS_CLASS_DEVFREQ, dirent->d_name); + + dirfd = open(path, O_DIRECTORY | O_CLOEXEC); + if (dirfd < 0) + return -1; + + if (__dev_sysfs_perf_init(dirfd, &dev_sysfs_perfs[count], + attrs, DEV_FREQUENCIES)) + return -1; + + close(dirfd); + + count++; + } + + closedir(dir); + + return 0; +} + +static int cpu_sysfs_perf_init(void) +{ + struct attrs attrs[] = { + [LATENCY] = { SYS_DEVICE_POWER_LATENCY_US, O_RDWR }, + [MIN_FREQ] = { CPU_MIN_FREQ, O_RDWR }, + [MAX_FREQ] = { CPU_MAX_FREQ, O_RDWR }, + [CUR_FREQ] = { CPU_CUR_FREQ, O_RDONLY }, + [SET_FREQ] = { CPU_SET_FREQ, O_WRONLY } + }; + + char *path; + + int i, nr_cpus, dirfd; + + nr_cpus = get_nprocs_conf(); + if (nr_cpus < 0) + return -1; + + dev_sysfs_perfs = malloc(sizeof(*dev_sysfs_perfs) * nr_cpus); + if (!dev_sysfs_perfs) + return -1; + + for (i = 0; i < nr_cpus; i++) { + + sprintf(dev_sysfs_perfs[i].device, "cpu%d", i); + + if (asprintf(&path, "%s/%s", SYS_DEVICE_SYSTEM_CPU, + dev_sysfs_perfs[i].device) < 0) + return -1; + + dirfd = open(path, O_DIRECTORY | O_CLOEXEC); + + free(path); + + if (dirfd < 0) + return -1; + + if (__dev_sysfs_perf_init(dirfd, &dev_sysfs_perfs[i], + attrs, CPU_FREQUENCIES)) + return -1; + + close(dirfd); + } + + count = nr_cpus; + + return 0; +} + +int powperf_init(void) +{ + if (cpu_sysfs_perf_init()) + return -1; + + if (devfreq_sysfs_perf_init()) + return -1; + + return 0; +} diff --git a/shared/hal/power/lib/libpowperf/tst/Makefile b/shared/hal/power/lib/libpowperf/tst/Makefile new file mode 100644 index 0000000..8e29db7 --- /dev/null +++ b/shared/hal/power/lib/libpowperf/tst/Makefile @@ -0,0 +1,16 @@ +# SPDX-License-Identifier: LGPL-2.1+ +CC=gcc +DEPS = ../include/libpowperf.h +LIB=../src/libpowperf.so +C_BINS=tst_powperf.c +CFLAGS=-g -Wall -Wno-unused + +BINS=$(C_BINS:.c=) + +tests: $(LIB) $(BINS) + +$(BINS): $(C_BINS) + $(CROSS_COMPILE)$(CC) $(CFLAGS) $< -o $@ -lpowperf -L../src -Wl,-rpath=../src -I../include + +clean: + rm -f $(BINS) *~ diff --git a/shared/hal/power/lib/libpowperf/tst/tst_powperf.c b/shared/hal/power/lib/libpowperf/tst/tst_powperf.c new file mode 100644 index 0000000..760c764 --- /dev/null +++ b/shared/hal/power/lib/libpowperf/tst/tst_powperf.c @@ -0,0 +1,237 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +#include <sys/stat.h> +#include <sys/sysinfo.h> +#include <sys/types.h> + +#include "libpowperf.h" + +static int tst_global_latency(void) +{ + const int global_latency = 1000; + int value; + + if (powperf_set_global_latency(global_latency) < 0) { + fprintf(stderr, "Failed to set the global latency\n"); + return -1; + } + + value = powperf_get_global_latency(); + if (value != global_latency) { + fprintf(stderr, "global latency mismatch %d<>%d\n", value, global_latency); + return -1; + } + + if (powperf_set_global_latency(INT_MAX) < 0) { + fprintf(stderr, "Failed to reset the global latency\n"); + return -1; + } + + value = powperf_get_global_latency(); + if (value != INT_MAX) { + fprintf(stderr, "global latency mismatch %d<>%d\n", value, INT_MAX); + return -1; + } + + return 0; +} + +static int tst_device_latency_cb(const char *device, void *data) +{ + const int latency = 500; + int id, value, prev_value; + + id = powperf_get_device_id(device); + if (id < 0) { + fprintf(stderr, "Failed to get device '%s' id\n", device); + return -1; + } + + if (!powperf_device_latency_supported(id)) + return 0; + + prev_value = powperf_get_device_latency(id); + if (prev_value < 0) { + fprintf(stderr, "Failed to get previous latency value\n"); + return -1; + } + + if (powperf_set_device_latency(id, latency)) { + fprintf(stderr, "Failed to set latency\n"); + return -1; + } + + value = powperf_get_device_latency(id); + if (value < 0) { + fprintf(stderr, "Failed to get current latency value\n"); + return -1; + } + + if (value != latency) { + fprintf(stderr, "Current and set value mismatch\n"); + return -1; + } + + if (powperf_set_device_latency(id, prev_value)) { + fprintf(stderr, "Failed to set latency to previous value\n"); + return -1; + } + + value = powperf_get_device_latency(id); + if (value < 0) { + fprintf(stderr, "Failed to get current latency value\n"); + return -1; + } + + if (value != prev_value) { + fprintf(stderr, "Failed to restore previous value\n"); + return -1; + } + + return 0; +} + +static int tst_device_latency(void) +{ + return powperf_for_each_device(tst_device_latency_cb, NULL); +} + +struct freq_cb_data { + int nr_freq; + int *freq; +}; + +static int tst_device_frequency_fill_cb(int frequency, void *data) +{ + struct freq_cb_data *fcd = (typeof(fcd))data; + + fcd->freq[fcd->nr_freq] = frequency; + fcd->nr_freq++; + + return 0; +} + +static int tst_device_frequency_cb(const char *device, void *data) +{ + struct freq_cb_data fcd = { 0 }; + int freq[64]; + int id, i; + int value; + + fcd.freq = freq; + + id = powperf_get_device_id(device); + if (id < 0) { + fprintf(stderr, "Failed to get device '%s' id\n", device); + return -1; + } + + if (powperf_for_each_frequency(id, tst_device_frequency_fill_cb, (void *)&fcd)) { + fprintf(stderr, "Failed to read frequency for device=%s id=%d\n", device, id); + return -1; + } + + /* + * For testing the range, we must set the maximum frequency + * interval first. + */ + if (powperf_set_device_min_frequency(id, fcd.freq[0]) < 0) { + fprintf(stderr, "Failed to set initial minimum frequency for device=%s\n", device); + return -1; + } + + if (powperf_set_device_max_frequency(id, fcd.freq[fcd.nr_freq - 1]) < 0) { + fprintf(stderr, "Failed to set initial maximum frequency for device=%s\n", device); + return -1; + } + + for (i = 0; i < fcd.nr_freq; i++) { + if (powperf_set_device_min_frequency(id, fcd.freq[i])) { + fprintf(stderr, "Failed to set minimum frequency for device=%s\n", device); + return -1; + } + + /* + * When setting the minimum/maxiumu frequency, there + * can be delay before being taken into account and + * reflected in sysfs. + */ + usleep(1000); + + value = powperf_get_device_min_frequency(id); + if (value != fcd.freq[i]) { + fprintf(stderr, "Minimum frequency mismatch for device=%s %d <> %d\n", + device, value, fcd.freq[i]); + return -1; + } + } + + if (powperf_set_device_min_frequency(id, fcd.freq[0]) < 0) { + fprintf(stderr, "Failed to set back minimum frequency for device=%s\n", device); + return -1; + } + + usleep(1000); + + if (powperf_get_device_min_frequency(id) != fcd.freq[0]) { + fprintf(stderr, "Unexpected minimum frequency for device=%s\n", device); + return -1; + } + + for (i = fcd.nr_freq - 1; i >= 0; i--) { + if (powperf_set_device_max_frequency(id, fcd.freq[i])) { + fprintf(stderr, "Failed to set maximum frequency for device=%s\n", device); + return -1; + } + + /* + * When setting the minimum/maxiumu frequency, there + * can be delay before being taken into account and + * reflected in sysfs. + */ + usleep(1000); + + if (powperf_get_device_max_frequency(id) != fcd.freq[i]) { + fprintf(stderr, "Maximum frequency mismatch for device=%s\n", device); + return -1; + } + } + + if (powperf_set_device_max_frequency(id, fcd.freq[fcd.nr_freq - 1]) < 0) { + fprintf(stderr, "Failed to set back maximum frequency for device=%s\n", device); + return -1; + } + + usleep(1000); + + if (powperf_get_device_max_frequency(id) != fcd.freq[fcd.nr_freq - 1]) { + fprintf(stderr, "Unexpected maximum frequency for device=%s\n", device); + return -1; + } + + return 0; +} + +static int tst_device_frequency(void) +{ + return powperf_for_each_device(tst_device_frequency_cb, NULL); +} + +int main(void) +{ + if (powperf_init()) { + fprintf(stderr, "Failed to initialize the library\n"); + return -1; + } + + printf("Global latency test: %s\n", tst_global_latency() ? "[Failed]" : "[OK]"); + printf("Device latency test: %s\n", tst_device_latency() ? "[Failed]" : "[OK]"); + printf("Device frequency test: %s\n", tst_device_frequency() ? "[Failed]" : "[OK]"); + + return 0; +} diff --git a/shared/hal/power/sepolicy/file.te b/shared/hal/power/sepolicy/file.te new file mode 100644 index 0000000..702780a --- /dev/null +++ b/shared/hal/power/sepolicy/file.te @@ -0,0 +1 @@ +type latency_device, dev_type; diff --git a/shared/hal/power/sepolicy/file_contexts b/shared/hal/power/sepolicy/file_contexts new file mode 100644 index 0000000..fb7697d --- /dev/null +++ b/shared/hal/power/sepolicy/file_contexts @@ -0,0 +1,3 @@ +dev/cpu_dma_latency u:object_r:latency_device:s0 + +/vendor/bin/hw/android\.hardware\.power@1\.3-service\.linaro-generic u:object_r:hal_power_linaro_exec:s0 diff --git a/shared/hal/power/sepolicy/hal_power_linaro.te b/shared/hal/power/sepolicy/hal_power_linaro.te new file mode 100644 index 0000000..12c8e83 --- /dev/null +++ b/shared/hal/power/sepolicy/hal_power_linaro.te @@ -0,0 +1,14 @@ +type hal_power_linaro, domain; +hal_server_domain(hal_power_linaro, hal_power) + +type hal_power_linaro_exec, exec_type, vendor_file_type, file_type; +init_daemon_domain(hal_power_linaro) + +# audit2allow + +# Access sysfs files +allow hal_power_linaro sysfs_devices_system_cpu:file rw_file_perms; +allow hal_power_linaro sysfs:file rw_file_perms; + +# Access dev cpu_dma_latency file +allow hal_power_linaro latency_device:chr_file rw_file_perms; |