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Health.cpp
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Health.cpp
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/*
* Copyright (C) 2018 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.
*/
#define LOG_TAG "android.hardware.health@2.1-impl-zuma"
#include <android-base/logging.h>
#include <android-base/file.h>
#include <android-base/parseint.h>
#include <android-base/strings.h>
#include <android/hardware/health/translate-ndk.h>
#include <health-impl/Health.h>
#include <health/utils.h>
// Recovery doesn't have libpixelhealth and charger mode
#ifndef __ANDROID_RECOVERY__
#include <health-impl/ChargerUtils.h>
#include <pixelhealth/BatteryDefender.h>
#include <pixelhealth/BatteryMetricsLogger.h>
#include <pixelhealth/ChargerDetect.h>
#include <pixelhealth/DeviceHealth.h>
#include <pixelhealth/LowBatteryShutdownMetrics.h>
#endif // !__ANDROID_RECOVERY__
#include <chrono>
#include <fstream>
#include <iomanip>
#include <string>
#include <vector>
namespace {
using namespace std::literals;
using aidl::android::hardware::health::DiskStats;
using aidl::android::hardware::health::HalHealthLoop;
using aidl::android::hardware::health::HealthInfo;
using aidl::android::hardware::health::StorageInfo;
using android::hardware::health::InitHealthdConfig;
#ifndef __ANDROID_RECOVERY__
using aidl::android::hardware::health::charger::ChargerCallback;
using aidl::android::hardware::health::charger::ChargerModeMain;
using hardware::google::pixel::health::BatteryDefender;
using hardware::google::pixel::health::BatteryMetricsLogger;
using hardware::google::pixel::health::DeviceHealth;
using hardware::google::pixel::health::LowBatteryShutdownMetrics;
using hardware::google::pixel::health::ChargerDetect;
#define FG_DIR "/sys/class/power_supply/battery"
constexpr char kBatteryResistance[] {FG_DIR "/resistance"};
constexpr char kBatteryOCV[] {FG_DIR "/voltage_ocv"};
constexpr char kVoltageAvg[] {FG_DIR "/voltage_now"};
#define WLC_DIR "/sys/class/power_supply/wireless"
static BatteryDefender battDefender(WLC_DIR "/present",
"/sys/devices/platform/google,charger/charge_start_level",
"/sys/devices/platform/google,charger/charge_stop_level");
static BatteryMetricsLogger battMetricsLogger(kBatteryResistance, kBatteryOCV);
static LowBatteryShutdownMetrics shutdownMetrics(kVoltageAvg);
static DeviceHealth deviceHealth;
#endif // !__ANDROID_RECOVERY__
#define UFS_DIR "/dev/sys/block/bootdevice"
constexpr char kUfsHealthEol[]{UFS_DIR "/health_descriptor/eol_info"};
constexpr char kUfsHealthLifetimeA[]{UFS_DIR "/health_descriptor/life_time_estimation_a"};
constexpr char kUfsHealthLifetimeB[]{UFS_DIR "/health_descriptor/life_time_estimation_b"};
constexpr char kUfsVersion[]{UFS_DIR "/device_descriptor/specification_version"};
constexpr char kDiskStatsFile[]{"/sys/block/sda/stat"};
static std::string ufs_version;
static uint16_t eol;
static uint16_t lifetimeA;
static uint16_t lifetimeB;
static std::chrono::system_clock::time_point ufs_last_query_time;
constexpr auto kUfsQueryIntervalHours = std::chrono::hours{24};
#ifndef __ANDROID_RECOVERY__
static bool needs_wlc_updates = false;
constexpr char kWlcCapacity[]{WLC_DIR "/capacity"};
#endif // !__ANDROID_RECOVERY__
std::ifstream assert_open(const std::string &path) {
std::ifstream stream(path);
if (!stream.is_open()) {
LOG(WARNING) << "Cannot read " << path;
}
return stream;
}
template <typename T>
void read_value_from_file(const std::string &path, T *field) {
auto stream = assert_open(path);
stream.unsetf(std::ios_base::basefield);
stream >> *field;
}
void read_ufs_version(StorageInfo *info) {
if (ufs_version.empty()) {
uint64_t value;
read_value_from_file(kUfsVersion, &value);
std::stringstream ss;
ss << "ufs " << std::hex << value;
ufs_version = ss.str();
LOG(INFO) << "ufs: " << ufs_version << " detected";
}
info->version = ufs_version;
}
#ifdef __ANDROID_RECOVERY__
void private_healthd_board_init(struct healthd_config *) {}
int private_healthd_board_battery_update(HealthInfo *) { return 0; }
#else // !__ANDROID__RECOVERY__
static bool FileExists(const std::string &filename) {
struct stat buffer;
return stat(filename.c_str(), &buffer) == 0;
}
void private_healthd_board_init(struct healthd_config *hc) {
std::string tcpmPsyName;
ChargerDetect::populateTcpmPsyName(&tcpmPsyName);
hc->ignorePowerSupplyNames.push_back(android::String8(tcpmPsyName.c_str()));
needs_wlc_updates = FileExists(kWlcCapacity);
if (needs_wlc_updates == false) {
battDefender.setWirelessNotSupported();
}
}
int private_healthd_board_battery_update(HealthInfo *health_info) {
deviceHealth.update(health_info);
battMetricsLogger.logBatteryProperties(*health_info);
shutdownMetrics.logShutdownVoltage(*health_info);
// Allow BatteryDefender to override online properties
ChargerDetect::onlineUpdate(health_info);
battDefender.update(health_info);
if (needs_wlc_updates &&
!android::base::WriteStringToFile(std::to_string(health_info->batteryLevel), kWlcCapacity))
LOG(INFO) << "Unable to write battery level to wireless capacity";
return 0;
}
#endif // __ANDROID_RECOVERY__
void private_get_storage_info(std::vector<StorageInfo> *vec_storage_info) {
vec_storage_info->resize(1);
StorageInfo *storage_info = &vec_storage_info->at(0);
read_ufs_version(storage_info);
auto time_now = std::chrono::system_clock::now();
auto time_delta = time_now - ufs_last_query_time;
auto hoursElapsed = std::chrono::duration_cast<std::chrono::hours>(time_delta);
if (hoursElapsed >= kUfsQueryIntervalHours) {
ufs_last_query_time = time_now;
read_value_from_file(kUfsHealthEol, &eol);
read_value_from_file(kUfsHealthLifetimeA, &lifetimeA);
read_value_from_file(kUfsHealthLifetimeB, &lifetimeB);
LOG(INFO) << "ufs: eol=" << eol << " lifetimeA=" << lifetimeA << " lifetimeB=" << lifetimeB;
}
storage_info->eol = eol;
storage_info->lifetimeA = lifetimeA;
storage_info->lifetimeB = lifetimeB;
return;
}
void private_get_disk_stats(std::vector<DiskStats> *vec_stats) {
vec_stats->resize(1);
DiskStats *stats = &vec_stats->at(0);
auto stream = assert_open(kDiskStatsFile);
// Regular diskstats entries
stream >> stats->reads >> stats->readMerges >> stats->readSectors >>
stats->readTicks >> stats->writes >> stats->writeMerges >>
stats->writeSectors >> stats->writeTicks >> stats->ioInFlight >>
stats->ioTicks >> stats->ioInQueue;
return;
}
} // anonymous namespace
namespace aidl::android::hardware::health::implementation {
class HealthImpl : public Health {
public:
HealthImpl(std::string_view instance_name, std::unique_ptr<healthd_config>&& config)
: Health(std::move(instance_name), std::move(config)) {}
ndk::ScopedAStatus getDiskStats(std::vector<DiskStats>* out) override;
ndk::ScopedAStatus getStorageInfo(std::vector<StorageInfo>* out) override;
protected:
void UpdateHealthInfo(HealthInfo* health_info) override;
};
void HealthImpl::UpdateHealthInfo(HealthInfo* health_info) {
private_healthd_board_battery_update(health_info);
}
ndk::ScopedAStatus HealthImpl::getStorageInfo(std::vector<StorageInfo>* out)
{
private_get_storage_info(out);
if (out->empty()) {
return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
}
return ndk::ScopedAStatus::ok();
}
ndk::ScopedAStatus HealthImpl::getDiskStats(std::vector<DiskStats>* out)
{
private_get_disk_stats(out);
if (out->empty()) {
return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
}
return ndk::ScopedAStatus::ok();
}
} // namespace aidl::android::hardware::health::implementation
#ifndef __ANDROID_RECOVERY__
namespace aidl::android::hardware::health {
class ChargerCallbackImpl : public ChargerCallback {
public:
ChargerCallbackImpl(const std::shared_ptr<Health>& service) : ChargerCallback(service) {}
bool ChargerEnableSuspend() override { return true; }
};
} //namespace aidl::android::hardware::health
#endif // !__ANDROID_RECOVERY__
int main(int argc, char **argv) {
using ::aidl::android::hardware::health::implementation::HealthImpl;
// Use kernel logging in recovery
#ifdef __ANDROID_RECOVERY__
android::base::InitLogging(argv, android::base::KernelLogger);
#endif
auto config = std::make_unique<healthd_config>();
InitHealthdConfig(config.get());
private_healthd_board_init(config.get());
auto binder =
ndk::SharedRefBase::make<HealthImpl>("default"sv, std::move(config));
if (argc >= 2 && argv[1] == "--charger"sv) {
// In regular mode, start charger UI.
#ifndef __ANDROID_RECOVERY__
LOG(INFO) << "Starting charger mode with UI.";
auto charger_callback = std::make_shared<aidl::android::hardware::health::ChargerCallbackImpl>(binder);
return ChargerModeMain(binder, charger_callback);
#endif
// In recovery, ignore --charger arg.
LOG(INFO) << "Starting charger mode without UI.";
} else {
LOG(INFO) << "Starting health HAL.";
}
auto hal_health_loop = std::make_shared<HalHealthLoop>(binder, binder);
return hal_health_loop->StartLoop();
}