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/*
* Copyright (C) 2016 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 <android-base/logging.h>
#include "hidl_return_util.h"
#include "wifi.h"
#include "wifi_status_util.h"
namespace {
// Chip ID to use for the only supported chip.
static constexpr android::hardware::wifi::V1_0::ChipId kChipId = 0;
} // namespace
namespace android {
namespace hardware {
namespace wifi {
namespace V1_4 {
namespace implementation {
using hidl_return_util::validateAndCall;
using hidl_return_util::validateAndCallWithLock;
Wifi::Wifi(
const std::shared_ptr<wifi_system::InterfaceTool> iface_tool,
const std::shared_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
const std::shared_ptr<mode_controller::WifiModeController> mode_controller,
const std::shared_ptr<iface_util::WifiIfaceUtil> iface_util,
const std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags)
: iface_tool_(iface_tool),
legacy_hal_(legacy_hal),
mode_controller_(mode_controller),
iface_util_(iface_util),
feature_flags_(feature_flags),
run_state_(RunState::STOPPED) {}
bool Wifi::isValid() {
// This object is always valid.
return true;
}
Return<void> Wifi::registerEventCallback(
const sp<IWifiEventCallback>& event_callback,
registerEventCallback_cb hidl_status_cb) {
return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
&Wifi::registerEventCallbackInternal, hidl_status_cb,
event_callback);
}
Return<bool> Wifi::isStarted() { return run_state_ != RunState::STOPPED; }
Return<void> Wifi::start(start_cb hidl_status_cb) {
return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
&Wifi::startInternal, hidl_status_cb);
}
Return<void> Wifi::stop(stop_cb hidl_status_cb) {
return validateAndCallWithLock(this, WifiStatusCode::ERROR_UNKNOWN,
&Wifi::stopInternal, hidl_status_cb);
}
Return<void> Wifi::getChipIds(getChipIds_cb hidl_status_cb) {
return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
&Wifi::getChipIdsInternal, hidl_status_cb);
}
Return<void> Wifi::getChip(ChipId chip_id, getChip_cb hidl_status_cb) {
return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
&Wifi::getChipInternal, hidl_status_cb, chip_id);
}
Return<void> Wifi::debug(const hidl_handle& handle,
const hidl_vec<hidl_string>&) {
LOG(INFO) << "-----------Debug is called----------------";
if (!chip_.get()) {
return Void();
}
return chip_->debug(handle, {});
}
WifiStatus Wifi::registerEventCallbackInternal(
const sp<IWifiEventCallback>& event_callback) {
if (!event_cb_handler_.addCallback(event_callback)) {
return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
}
return createWifiStatus(WifiStatusCode::SUCCESS);
}
WifiStatus Wifi::startInternal() {
if (run_state_ == RunState::STARTED) {
return createWifiStatus(WifiStatusCode::SUCCESS);
} else if (run_state_ == RunState::STOPPING) {
return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE,
"HAL is stopping");
}
WifiStatus wifi_status = initializeModeControllerAndLegacyHal();
if (wifi_status.code == WifiStatusCode::SUCCESS) {
// Create the chip instance once the HAL is started.
chip_ = new WifiChip(kChipId, legacy_hal_, mode_controller_,
iface_util_, feature_flags_);
run_state_ = RunState::STARTED;
for (const auto& callback : event_cb_handler_.getCallbacks()) {
if (!callback->onStart().isOk()) {
LOG(ERROR) << "Failed to invoke onStart callback";
};
}
LOG(INFO) << "Wifi HAL started";
} else {
for (const auto& callback : event_cb_handler_.getCallbacks()) {
if (!callback->onFailure(wifi_status).isOk()) {
LOG(ERROR) << "Failed to invoke onFailure callback";
}
}
LOG(ERROR) << "Wifi HAL start failed";
}
return wifi_status;
}
WifiStatus Wifi::stopInternal(
/* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
if (run_state_ == RunState::STOPPED) {
return createWifiStatus(WifiStatusCode::SUCCESS);
} else if (run_state_ == RunState::STOPPING) {
return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE,
"HAL is stopping");
}
// Clear the chip object and its child objects since the HAL is now
// stopped.
if (chip_.get()) {
chip_->invalidate();
chip_.clear();
}
WifiStatus wifi_status = stopLegacyHalAndDeinitializeModeController(lock);
if (wifi_status.code == WifiStatusCode::SUCCESS) {
for (const auto& callback : event_cb_handler_.getCallbacks()) {
if (!callback->onStop().isOk()) {
LOG(ERROR) << "Failed to invoke onStop callback";
};
}
LOG(INFO) << "Wifi HAL stopped";
} else {
for (const auto& callback : event_cb_handler_.getCallbacks()) {
if (!callback->onFailure(wifi_status).isOk()) {
LOG(ERROR) << "Failed to invoke onFailure callback";
}
}
LOG(ERROR) << "Wifi HAL stop failed";
}
return wifi_status;
}
std::pair<WifiStatus, std::vector<ChipId>> Wifi::getChipIdsInternal() {
std::vector<ChipId> chip_ids;
if (chip_.get()) {
chip_ids.emplace_back(kChipId);
}
return {createWifiStatus(WifiStatusCode::SUCCESS), std::move(chip_ids)};
}
std::pair<WifiStatus, sp<IWifiChip>> Wifi::getChipInternal(ChipId chip_id) {
if (!chip_.get()) {
return {createWifiStatus(WifiStatusCode::ERROR_NOT_STARTED), nullptr};
}
if (chip_id != kChipId) {
return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
}
return {createWifiStatus(WifiStatusCode::SUCCESS), chip_};
}
WifiStatus Wifi::initializeModeControllerAndLegacyHal() {
if (!mode_controller_->initialize()) {
LOG(ERROR) << "Failed to initialize firmware mode controller";
return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
}
legacy_hal::wifi_error legacy_status = legacy_hal_->initialize();
if (legacy_status != legacy_hal::WIFI_SUCCESS) {
LOG(ERROR) << "Failed to initialize legacy HAL: "
<< legacyErrorToString(legacy_status);
return createWifiStatusFromLegacyError(legacy_status);
}
return createWifiStatus(WifiStatusCode::SUCCESS);
}
WifiStatus Wifi::stopLegacyHalAndDeinitializeModeController(
/* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
run_state_ = RunState::STOPPING;
legacy_hal::wifi_error legacy_status =
legacy_hal_->stop(lock, [&]() { run_state_ = RunState::STOPPED; });
if (legacy_status != legacy_hal::WIFI_SUCCESS) {
LOG(ERROR) << "Failed to stop legacy HAL: "
<< legacyErrorToString(legacy_status);
return createWifiStatusFromLegacyError(legacy_status);
}
if (!mode_controller_->deinitialize()) {
LOG(ERROR) << "Failed to deinitialize firmware mode controller";
return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
}
return createWifiStatus(WifiStatusCode::SUCCESS);
}
} // namespace implementation
} // namespace V1_4
} // namespace wifi
} // namespace hardware
} // namespace android
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