diff --git a/gnss/1.0/default/AGnssRil.cpp b/gnss/1.0/default/AGnssRil.cpp
new file mode 100644
index 0000000..87abad7
--- /dev/null
+++ b/gnss/1.0/default/AGnssRil.cpp
@@ -0,0 +1,145 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "GnssHAL_AGnssRilInterface"
+
+#include "AGnssRil.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_0 {
+namespace implementation {
+
+std::vector<std::unique_ptr<ThreadFuncArgs>> AGnssRil::sThreadFuncArgsList;
+sp<IAGnssRilCallback> AGnssRil::sAGnssRilCbIface = nullptr;
+bool AGnssRil::sInterfaceExists = false;
+
+AGpsRilCallbacks AGnssRil::sAGnssRilCb = {
+    .request_setid = AGnssRil::requestSetId,
+    .request_refloc = AGnssRil::requestRefLoc,
+    .create_thread_cb = AGnssRil::createThreadCb
+};
+
+AGnssRil::AGnssRil(const AGpsRilInterface* aGpsRilIface) : mAGnssRilIface(aGpsRilIface) {
+    /* Error out if an instance of the interface already exists. */
+    LOG_ALWAYS_FATAL_IF(sInterfaceExists);
+    sInterfaceExists = true;
+}
+
+AGnssRil::~AGnssRil() {
+    sThreadFuncArgsList.clear();
+}
+
+void AGnssRil::requestSetId(uint32_t flags) {
+    if (sAGnssRilCbIface == nullptr) {
+        ALOGE("%s: AGNSSRil Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    sAGnssRilCbIface->requestSetIdCb(static_cast<IAGnssRilCallback::ID>(flags));
+}
+
+void AGnssRil::requestRefLoc(uint32_t /*flags*/) {
+    if (sAGnssRilCbIface == nullptr) {
+        ALOGE("%s: AGNSSRil Callback Interface configured incorrectly", __func__);
+        return;
+    }
+
+    sAGnssRilCbIface->requestRefLocCb();
+}
+
+pthread_t AGnssRil::createThreadCb(const char* name, void (*start)(void*), void* arg) {
+    return createPthread(name, start, arg, &sThreadFuncArgsList);
+}
+
+// Methods from ::android::hardware::gnss::V1_0::IAGnssRil follow.
+Return<void> AGnssRil::setCallback(const sp<IAGnssRilCallback>& callback)  {
+    if (mAGnssRilIface == nullptr) {
+        ALOGE("%s: AGnssRil interface is unavailable", __func__);
+        return Void();
+    }
+
+    sAGnssRilCbIface = callback;
+
+    mAGnssRilIface->init(&sAGnssRilCb);
+    return Void();
+}
+
+Return<void> AGnssRil::setRefLocation(const IAGnssRil::AGnssRefLocation& aGnssRefLocation)  {
+    if (mAGnssRilIface == nullptr) {
+        ALOGE("%s: AGnssRil interface is unavailable", __func__);
+        return Void();
+    }
+
+    AGpsRefLocation aGnssRefloc;
+    aGnssRefloc.type = static_cast<uint16_t>(aGnssRefLocation.type);
+
+    auto& cellID = aGnssRefLocation.cellID;
+    aGnssRefloc.u.cellID = {
+        .type = static_cast<uint16_t>(cellID.type),
+        .mcc = cellID.mcc,
+        .mnc = cellID.mnc,
+        .lac = cellID.lac,
+        .cid = cellID.cid,
+        .tac = cellID.tac,
+        .pcid = cellID.pcid
+    };
+
+    mAGnssRilIface->set_ref_location(&aGnssRefloc, sizeof(aGnssRefloc));
+    return Void();
+}
+
+Return<bool> AGnssRil::setSetId(IAGnssRil::SetIDType type, const hidl_string& setid)  {
+    if (mAGnssRilIface == nullptr) {
+        ALOGE("%s: AGnssRil interface is unavailable", __func__);
+        return false;
+    }
+
+    mAGnssRilIface->set_set_id(static_cast<uint16_t>(type), setid.c_str());
+    return true;
+}
+
+Return<bool> AGnssRil::updateNetworkState(bool connected,
+                                          IAGnssRil::NetworkType type,
+                                          bool roaming) {
+    if (mAGnssRilIface == nullptr) {
+        ALOGE("%s: AGnssRil interface is unavailable", __func__);
+        return false;
+    }
+
+    mAGnssRilIface->update_network_state(connected,
+                                         static_cast<int>(type),
+                                         roaming,
+                                         nullptr /* extra_info */);
+    return true;
+}
+
+Return<bool> AGnssRil::updateNetworkAvailability(bool available, const hidl_string& apn)  {
+    if (mAGnssRilIface == nullptr) {
+        ALOGE("%s: AGnssRil interface is unavailable", __func__);
+        return false;
+    }
+
+    mAGnssRilIface->update_network_availability(available, apn.c_str());
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android