Add default (mock) Contexthub HAL 1.1 impl

Current implementation exposes a mock context hub, but with no nanoapps.

Bug: 135951924
Test: compile only (will be covered by VTS in a follow-up)
Change-Id: I7a13527f303ce1bcacac8c6be9f081b0838cdc68

contexthub/1.1/default/Android.bp

@@ -0,0 +1,42 @@
+/*
+ * 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.
+ */
+
+cc_binary {
+    name: "android.hardware.contexthub@1.1-service.mock",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    relative_install_path: "hw",
+    init_rc: ["android.hardware.contexthub@1.1-service.rc"],
+    srcs: [
+        "Contexthub.cpp",
+        "service.cpp",
+    ],
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+    shared_libs: [
+        "android.hardware.contexthub@1.0",
+        "android.hardware.contexthub@1.1",
+        "libbase",
+        "libcutils",
+        "libhardware",
+        "libhidlbase",
+        "liblog",
+        "libutils",
+    ],
+    vintf_fragments: ["android.hardware.contexthub@1.1.xml"],
+}

contexthub/1.1/default/Contexthub.cpp

@@ -0,0 +1,109 @@
+/*
+ * 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 "Contexthub.h"
+
+#include <vector>
+
+namespace android {
+namespace hardware {
+namespace contexthub {
+namespace V1_1 {
+namespace implementation {
+
+using ::android::hardware::contexthub::V1_0::ContextHub;
+using ::android::hardware::contexthub::V1_0::HubAppInfo;
+using ::android::hardware::contexthub::V1_0::Result;
+
+namespace {
+
+constexpr uint32_t kMockHubId = 0;
+
+}  // anonymous namespace
+
+Return<void> Contexthub::getHubs(getHubs_cb _hidl_cb) {
+    ContextHub hub = {};
+    hub.name = "Mock Context Hub";
+    hub.vendor = "AOSP";
+    hub.toolchain = "n/a";
+    hub.platformVersion = 1;
+    hub.toolchainVersion = 1;
+    hub.hubId = kMockHubId;
+    hub.peakMips = 1;
+    hub.peakPowerDrawMw = 1;
+    hub.maxSupportedMsgLen = 4096;
+    hub.chrePlatformId = UINT64_C(0x476f6f6754000000);
+    hub.chreApiMajorVersion = 1;
+    hub.chreApiMinorVersion = 4;
+
+    // Report a single mock hub
+    std::vector<ContextHub> hubs;
+    hubs.push_back(hub);
+
+    _hidl_cb(hubs);
+    return Void();
+}
+
+Return<Result> Contexthub::registerCallback(uint32_t hubId, const sp<IContexthubCallback>& cb) {
+    if (hubId == kMockHubId) {
+        mCallback = cb;
+        return Result::OK;
+    }
+    return Result::BAD_PARAMS;
+}
+
+// We don't expose any nanoapps, therefore all nanoapp-related API calls return with BAD_PARAMS
+Return<Result> Contexthub::sendMessageToHub(uint32_t /*hubId*/, const ContextHubMsg& /*msg*/) {
+    return Result::BAD_PARAMS;
+}
+
+Return<Result> Contexthub::loadNanoApp(uint32_t /*hubId*/, const NanoAppBinary& /*appBinary*/,
+                                       uint32_t /*transactionId*/) {
+    return Result::BAD_PARAMS;
+}
+
+Return<Result> Contexthub::unloadNanoApp(uint32_t /*hubId*/, uint64_t /*appId*/,
+                                         uint32_t /*transactionId*/) {
+    return Result::BAD_PARAMS;
+}
+
+Return<Result> Contexthub::enableNanoApp(uint32_t /*hubId*/, uint64_t /*appId*/,
+                                         uint32_t /*transactionId*/) {
+    return Result::BAD_PARAMS;
+}
+
+Return<Result> Contexthub::disableNanoApp(uint32_t /*hubId*/, uint64_t /*appId*/,
+                                          uint32_t /*transactionId*/) {
+    return Result::BAD_PARAMS;
+}
+
+Return<Result> Contexthub::queryApps(uint32_t hubId) {
+    if (hubId == kMockHubId && mCallback != nullptr) {
+        std::vector<HubAppInfo> nanoapps;
+        mCallback->handleAppsInfo(nanoapps);
+        return Result::OK;
+    }
+    return Result::BAD_PARAMS;
+}
+
+Return<void> Contexthub::onSettingChanged(Setting /*setting*/, SettingValue /*newValue*/) {
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_1
+}  // namespace contexthub
+}  // namespace hardware
+}  // namespace android

contexthub/1.1/default/Contexthub.h

@@ -0,0 +1,56 @@
+/*
+ * 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.
+ */
+#pragma once
+
+#include <android/hardware/contexthub/1.1/IContexthub.h>
+
+namespace android {
+namespace hardware {
+namespace contexthub {
+namespace V1_1 {
+namespace implementation {
+
+class Contexthub : public V1_1::IContexthub {
+    using ContextHubMsg = ::android::hardware::contexthub::V1_0::ContextHubMsg;
+    using IContexthubCallback = ::android::hardware::contexthub::V1_0::IContexthubCallback;
+    using NanoAppBinary = ::android::hardware::contexthub::V1_0::NanoAppBinary;
+    using Result = ::android::hardware::contexthub::V1_0::Result;
+
+  public:
+    // Methods from V1_0::IContexthub
+    Return<void> getHubs(getHubs_cb _hidl_cb) override;
+    Return<Result> registerCallback(uint32_t hubId,
+                                    const ::android::sp<IContexthubCallback>& cb) override;
+    Return<Result> sendMessageToHub(uint32_t hubId, const ContextHubMsg& msg) override;
+    Return<Result> loadNanoApp(uint32_t hubId, const NanoAppBinary& appBinary,
+                               uint32_t transactionId) override;
+    Return<Result> unloadNanoApp(uint32_t hubId, uint64_t appId, uint32_t transactionId) override;
+    Return<Result> enableNanoApp(uint32_t hubId, uint64_t appId, uint32_t transactionId) override;
+    Return<Result> disableNanoApp(uint32_t hubId, uint64_t appId, uint32_t transactionId) override;
+    Return<Result> queryApps(uint32_t hubId) override;
+
+    // Methods from V1_1::IContexthub
+    Return<void> onSettingChanged(Setting setting, SettingValue newValue) override;
+
+  private:
+    sp<IContexthubCallback> mCallback;
+};
+
+}  // namespace implementation
+}  // namespace V1_1
+}  // namespace contexthub
+}  // namespace hardware
+}  // namespace android

contexthub/1.1/default/OWNERS

@@ -0,0 +1,3 @@
+arthuri@google.com
+bduddie@google.com
+stange@google.com

contexthub/1.1/default/android.hardware.contexthub@1.1-service.rc

@@ -0,0 +1,6 @@
+service vendor.contexthub-hal-1-1-mock /vendor/bin/hw/android.hardware.contexthub@1.1-service.mock
+    interface android.hardware.contexthub@1.0::IContexthub default
+    interface android.hardware.contexthub@1.1::IContexthub default
+    class hal
+    user system
+    group system

contexthub/1.1/default/android.hardware.contexthub@1.1.xml

@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.contexthub</name>
+        <transport>hwbinder</transport>
+        <version>1.1</version>
+        <interface>
+            <name>IContexthub</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>

contexthub/1.1/default/service.cpp

@@ -0,0 +1,42 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "android.hardware.contexthub@1.1-service"
+
+#include <android/hardware/contexthub/1.1/IContexthub.h>
+#include <hidl/HidlTransportSupport.h>
+#include <log/log.h>
+#include <utils/StrongPointer.h>
+#include "Contexthub.h"
+
+using ::android::hardware::configureRpcThreadpool;
+using ::android::hardware::joinRpcThreadpool;
+using ::android::hardware::contexthub::V1_1::IContexthub;
+using ::android::hardware::contexthub::V1_1::implementation::Contexthub;
+
+int main() {
+    configureRpcThreadpool(1, true /* callerWillJoin */);
+
+    ::android::sp<IContexthub> contexthub = new Contexthub();
+    if (contexthub->registerAsService() != ::android::OK) {
+        ALOGE("Failed to register Contexthub HAL instance");
+        return 1;
+    }
+
+    joinRpcThreadpool();
+    ALOGE("Service exited");
+    return 1;
+}