Tomasz Wasilczyk | 1b2c6ef | 2019-07-19 13:57:42 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2019 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <android-base/logging.h> |
| 18 | #include <android/hardware/automotive/can/1.0/ICanController.h> |
| 19 | #include <android/hidl/manager/1.2/IServiceManager.h> |
| 20 | #include <hidl-utils/hidl-utils.h> |
| 21 | |
| 22 | #include <iostream> |
| 23 | #include <string> |
| 24 | |
| 25 | namespace android { |
| 26 | namespace hardware { |
| 27 | namespace automotive { |
| 28 | namespace can { |
| 29 | |
| 30 | using ICanController = V1_0::ICanController; |
| 31 | |
| 32 | static void usage() { |
| 33 | std::cerr << "CAN bus HAL Control tool" << std::endl; |
| 34 | std::cerr << std::endl << "usage:" << std::endl << std::endl; |
| 35 | std::cerr << "canhalctrl up <bus name> <type> <interface> [baudrate]" << std::endl; |
| 36 | std::cerr << "where:" << std::endl; |
| 37 | std::cerr << " bus name - name under which ICanBus will be published" << std::endl; |
| 38 | std::cerr << " type - one of: virtual, socketcan, slcan, indexed" << std::endl; |
| 39 | std::cerr << " interface - hardware identifier (like can0, vcan0, /dev/ttyUSB0)" << std::endl; |
| 40 | std::cerr << " baudrate - such as 100000, 125000, 250000, 500000" << std::endl; |
| 41 | std::cerr << std::endl; |
| 42 | std::cerr << "canhalctrl down <bus name>" << std::endl; |
| 43 | std::cerr << "where:" << std::endl; |
| 44 | std::cerr << " bus name - name under which ICanBus will be published" << std::endl; |
| 45 | } |
| 46 | |
| 47 | static hidl_vec<hidl_string> getControlServices() { |
| 48 | auto manager = hidl::manager::V1_2::IServiceManager::getService(); |
| 49 | hidl_vec<hidl_string> services; |
| 50 | manager->listManifestByInterface(ICanController::descriptor, hidl_utils::fill(&services)); |
| 51 | if (services.size() == 0) { |
| 52 | std::cerr << "No ICanController services registered (missing privileges?)" << std::endl; |
| 53 | exit(-1); |
| 54 | } |
| 55 | return services; |
| 56 | } |
| 57 | |
| 58 | static bool isSupported(sp<ICanController> ctrl, ICanController::InterfaceType iftype) { |
| 59 | hidl_vec<ICanController::InterfaceType> supported; |
| 60 | if (!ctrl->getSupportedInterfaceTypes(hidl_utils::fill(&supported)).isOk()) return false; |
| 61 | return supported.contains(iftype); |
| 62 | } |
| 63 | |
| 64 | static int up(const std::string& busName, ICanController::InterfaceType type, |
| 65 | const std::string& interface, uint32_t baudrate) { |
| 66 | bool anySupported = false; |
| 67 | for (auto&& service : getControlServices()) { |
| 68 | auto ctrl = ICanController::getService(service); |
| 69 | if (ctrl == nullptr) { |
| 70 | std::cerr << "Couldn't open ICanController/" << service; |
| 71 | continue; |
| 72 | } |
| 73 | |
| 74 | if (!isSupported(ctrl, type)) continue; |
| 75 | anySupported = true; |
| 76 | |
| 77 | ICanController::BusConfiguration config = {}; |
| 78 | config.name = busName; |
| 79 | config.iftype = type; |
| 80 | config.baudrate = baudrate; |
| 81 | |
| 82 | if (type == ICanController::InterfaceType::INDEXED) { |
| 83 | config.interfaceId.index(std::stol(interface)); |
| 84 | } else { |
| 85 | config.interfaceId.address(interface); |
| 86 | } |
| 87 | |
| 88 | const auto upresult = ctrl->upInterface(config); |
| 89 | if (upresult == ICanController::Result::OK) return 0; |
| 90 | std::cerr << "Failed to bring interface up: " << toString(upresult) << std::endl; |
| 91 | // Let's continue the loop to try other controllers. |
| 92 | } |
| 93 | |
| 94 | if (!anySupported) { |
| 95 | std::cerr << "No controller supports " << toString(type) << std::endl; |
| 96 | } |
| 97 | return -1; |
| 98 | } |
| 99 | |
| 100 | static int down(const std::string& busName) { |
| 101 | for (auto&& service : getControlServices()) { |
| 102 | auto ctrl = ICanController::getService(service); |
| 103 | if (ctrl == nullptr) continue; |
| 104 | |
| 105 | if (ctrl->downInterface(busName)) return 0; |
| 106 | } |
| 107 | |
| 108 | std::cerr << "Failed to bring interface " << busName << " down (maybe it's down already?)" |
| 109 | << std::endl; |
| 110 | return -1; |
| 111 | } |
| 112 | |
| 113 | static std::optional<ICanController::InterfaceType> parseInterfaceType(const std::string& str) { |
| 114 | if (str == "virtual") return ICanController::InterfaceType::VIRTUAL; |
| 115 | if (str == "socketcan") return ICanController::InterfaceType::SOCKETCAN; |
| 116 | if (str == "slcan") return ICanController::InterfaceType::SLCAN; |
| 117 | if (str == "indexed") return ICanController::InterfaceType::INDEXED; |
| 118 | return std::nullopt; |
| 119 | } |
| 120 | |
| 121 | static int main(int argc, char* argv[]) { |
| 122 | base::SetDefaultTag("CanHalControl"); |
| 123 | base::SetMinimumLogSeverity(android::base::VERBOSE); |
| 124 | |
| 125 | if (argc == 0) { |
| 126 | usage(); |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | std::string cmd(argv[0]); |
| 131 | argv++; |
| 132 | argc--; |
| 133 | |
| 134 | if (cmd == "up") { |
| 135 | if (argc < 3 || argc > 4) { |
| 136 | std::cerr << "Invalid number of arguments to up command: " << argc << std::endl; |
| 137 | usage(); |
| 138 | return -1; |
| 139 | } |
| 140 | |
| 141 | const std::string busName(argv[0]); |
| 142 | const std::string typeStr(argv[1]); |
| 143 | const std::string interface(argv[2]); |
| 144 | |
| 145 | const auto type = parseInterfaceType(typeStr); |
| 146 | if (!type) { |
| 147 | std::cerr << "Invalid interface type: " << typeStr << std::endl; |
| 148 | usage(); |
| 149 | return -1; |
| 150 | } |
| 151 | |
| 152 | long long baudrate = 0; |
| 153 | if (argc == 4) { |
| 154 | baudrate = std::stoll(argv[3]); |
| 155 | } |
| 156 | |
| 157 | return up(busName, *type, interface, baudrate); |
| 158 | } else if (cmd == "down") { |
| 159 | if (argc != 1) { |
| 160 | std::cerr << "Invalid number of arguments to down command: " << argc << std::endl; |
| 161 | usage(); |
| 162 | return -1; |
| 163 | } |
| 164 | |
| 165 | return down(argv[0]); |
| 166 | } else { |
| 167 | std::cerr << "Invalid command: " << cmd << std::endl; |
| 168 | usage(); |
| 169 | return -1; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | } // namespace can |
| 174 | } // namespace automotive |
| 175 | } // namespace hardware |
| 176 | } // namespace android |
| 177 | |
| 178 | int main(int argc, char* argv[]) { |
| 179 | if (argc < 1) return -1; |
| 180 | return ::android::hardware::automotive::can::main(--argc, ++argv); |
| 181 | } |