wifi: Add firmware mode controller
This module will make the necessary calls to reconfigure the
driver/firmware in the required state.
The module assumes that the sysfs paths needed to be accessed has been
chowned to "wifi" at bootup in the device's .rc file.
Bug: 32018162
Test: Compiles
Change-Id: I827c5eb6b5b4a3810e912d4164dbc8ff0ef4d30c
diff --git a/wifi/1.0/default/Android.mk b/wifi/1.0/default/Android.mk
index 931a314..382d350 100644
--- a/wifi/1.0/default/Android.mk
+++ b/wifi/1.0/default/Android.mk
@@ -24,6 +24,7 @@
wifi_ap_iface.cpp \
wifi_chip.cpp \
wifi_legacy_hal.cpp \
+ wifi_mode_controller.cpp \
wifi_nan_iface.cpp \
wifi_p2p_iface.cpp \
wifi_rtt_controller.cpp \
@@ -39,6 +40,7 @@
liblog \
libnl \
libutils \
+ libwifi-hal \
libwifi-system
LOCAL_WHOLE_STATIC_LIBRARIES := $(LIB_WIFI_HAL)
LOCAL_INIT_RC := android.hardware.wifi@1.0-service.rc
diff --git a/wifi/1.0/default/wifi_mode_controller.cpp b/wifi/1.0/default/wifi_mode_controller.cpp
new file mode 100644
index 0000000..42dd9ad
--- /dev/null
+++ b/wifi/1.0/default/wifi_mode_controller.cpp
@@ -0,0 +1,87 @@
+/*
+ * 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 <android-base/macros.h>
+#include <private/android_filesystem_config.h>
+
+#include "wifi_mode_controller.h"
+
+using android::hardware::wifi::V1_0::IfaceType;
+using android::wifi_hal::DriverTool;
+
+namespace {
+int convertIfaceTypeToFirmwareMode(IfaceType type) {
+ int mode;
+ switch (type) {
+ case IfaceType::AP:
+ mode = DriverTool::kFirmwareModeAp;
+ break;
+ case IfaceType::P2P:
+ mode = DriverTool::kFirmwareModeP2p;
+ break;
+ case IfaceType::NAN:
+ // NAN is exposed in STA mode currently.
+ mode = DriverTool::kFirmwareModeSta;
+ break;
+ case IfaceType::STA:
+ mode = DriverTool::kFirmwareModeSta;
+ break;
+ }
+ return mode;
+}
+}
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_0 {
+namespace implementation {
+namespace mode_controller {
+
+WifiModeController::WifiModeController() : driver_tool_(new DriverTool) {}
+
+bool WifiModeController::isFirmwareModeChangeNeeded(IfaceType type) {
+ return driver_tool_->IsFirmwareModeChangeNeeded(
+ convertIfaceTypeToFirmwareMode(type));
+}
+
+bool WifiModeController::changeFirmwareMode(IfaceType type) {
+ if (!driver_tool_->LoadDriver()) {
+ LOG(ERROR) << "Failed to load WiFi driver";
+ return false;
+ }
+ if (!driver_tool_->IsFirmwareModeChangeNeeded(
+ convertIfaceTypeToFirmwareMode(type))) {
+ LOG(ERROR) << "Failed to change firmware mode";
+ return false;
+ }
+ return true;
+}
+
+bool WifiModeController::deinitialize() {
+ if (!driver_tool_->UnloadDriver()) {
+ LOG(ERROR) << "Failed to unload WiFi driver";
+ return false;
+ }
+ return true;
+}
+} // namespace mode_controller
+} // namespace implementation
+} // namespace V1_0
+} // namespace wifi
+} // namespace hardware
+} // namespace android
diff --git a/wifi/1.0/default/wifi_mode_controller.h b/wifi/1.0/default/wifi_mode_controller.h
new file mode 100644
index 0000000..a4147a9
--- /dev/null
+++ b/wifi/1.0/default/wifi_mode_controller.h
@@ -0,0 +1,59 @@
+/*
+ * 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.
+ */
+
+#ifndef WIFI_MODE_CONTROLLER_H_
+#define WIFI_MODE_CONTROLLER_H_
+
+#include <wifi_hal/driver_tool.h>
+
+#include <android/hardware/wifi/1.0/IWifi.h>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_0 {
+namespace implementation {
+namespace mode_controller {
+/**
+ * Class that encapsulates all firmware mode configuration.
+ * This class will perform the necessary firmware reloads to put the chip in the
+ * required state (essentially a wrapper over DriverTool).
+ */
+class WifiModeController {
+ public:
+ WifiModeController();
+
+ // Checks if a firmware mode change is necessary to support the specified
+ // iface type operations.
+ bool isFirmwareModeChangeNeeded(IfaceType type);
+ // Change the firmware mode to support the specified iface type operations.
+ bool changeFirmwareMode(IfaceType type);
+ // Unload the driver. This should be invoked whenever |IWifi.stop()| is
+ // invoked.
+ bool deinitialize();
+
+ private:
+ std::unique_ptr<wifi_hal::DriverTool> driver_tool_;
+};
+
+} // namespace mode_controller
+} // namespace implementation
+} // namespace V1_0
+} // namespace wifi
+} // namespace hardware
+} // namespace android
+
+#endif // WIFI_MODE_CONTROLLER_H_