1 /* 2 * Copyright (C) 2020 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 #pragma once 18 19 #include <android-base/file.h> 20 #include <android-base/properties.h> 21 #include <android-base/unique_fd.h> 22 #include <android-base/parseint.h> 23 #include <android-base/strings.h> 24 #include <aidl/android/hardware/usb/gadget/BnUsbGadget.h> 25 #include <aidl/android/hardware/usb/gadget/BnUsbGadgetCallback.h> 26 #include <aidl/android/hardware/usb/gadget/GadgetFunction.h> 27 #include <aidl/android/hardware/usb/gadget/IUsbGadget.h> 28 #include <aidl/android/hardware/usb/gadget/IUsbGadgetCallback.h> 29 #include <pixelusb/UsbGadgetAidlCommon.h> 30 #include <sched.h> 31 #include <sys/epoll.h> 32 #include <sys/eventfd.h> 33 #include <utils/Log.h> 34 #include <chrono> 35 #include <condition_variable> 36 #include <mutex> 37 #include <string> 38 #include <thread> 39 40 namespace aidl { 41 namespace android { 42 namespace hardware { 43 namespace usb { 44 namespace gadget { 45 46 using ::aidl::android::hardware::usb::gadget::GadgetFunction; 47 using ::aidl::android::hardware::usb::gadget::IUsbGadgetCallback; 48 using ::aidl::android::hardware::usb::gadget::IUsbGadget; 49 using ::aidl::android::hardware::usb::gadget::Status; 50 using ::aidl::android::hardware::usb::gadget::UsbSpeed; 51 using ::android::base::GetProperty; 52 using ::android::base::SetProperty; 53 using ::android::base::ParseUint; 54 using ::android::base::unique_fd; 55 using ::android::base::ReadFileToString; 56 using ::android::base::Trim; 57 using ::android::base::WriteStringToFile; 58 using ::android::hardware::google::pixel::usb::addAdb; 59 using ::android::hardware::google::pixel::usb::addEpollFd; 60 using ::android::hardware::google::pixel::usb::getVendorFunctions; 61 using ::android::hardware::google::pixel::usb::kDebug; 62 using ::android::hardware::google::pixel::usb::kDisconnectWaitUs; 63 using ::android::hardware::google::pixel::usb::linkFunction; 64 using ::android::hardware::google::pixel::usb::MonitorFfs; 65 using ::android::hardware::google::pixel::usb::resetGadget; 66 using ::android::hardware::google::pixel::usb::setVidPid; 67 using ::android::hardware::google::pixel::usb::unlinkFunctions; 68 using ::ndk::ScopedAStatus; 69 using ::std::shared_ptr; 70 using ::std::string; 71 72 constexpr char kGadgetName[] = "11110000.dwc3"; 73 constexpr char kProcInterruptsPath[] = "/proc/interrupts"; 74 constexpr char kProcIrqPath[] = "/proc/irq/"; 75 constexpr char kSmpAffinityList[] = "/smp_affinity_list"; 76 #ifndef UDC_PATH 77 #define UDC_PATH "/sys/class/udc/11110000.dwc3/" 78 #endif 79 static MonitorFfs monitorFfs(kGadgetName); 80 81 #define SPEED_PATH UDC_PATH "current_speed" 82 83 #define BIG_CORE "6" 84 #define MEDIUM_CORE "4" 85 86 #define POWER_SUPPLY_PATH "/sys/class/power_supply/usb/" 87 #define USB_PORT0_PATH "/sys/class/typec/port0/" 88 89 #define CURRENT_MAX_PATH POWER_SUPPLY_PATH "current_max" 90 #define CURRENT_USB_TYPE_PATH POWER_SUPPLY_PATH "usb_type" 91 #define CURRENT_USB_POWER_OPERATION_MODE_PATH USB_PORT0_PATH "power_operation_mode" 92 93 struct UsbGadget : public BnUsbGadget { 94 UsbGadget(); 95 96 // Makes sure that only one request is processed at a time. 97 std::mutex mLockSetCurrentFunction; 98 std::string mGadgetIrqPath; 99 long mCurrentUsbFunctions; 100 bool mCurrentUsbFunctionsApplied; 101 UsbSpeed mUsbSpeed; 102 103 ScopedAStatus setCurrentUsbFunctions(long functions, 104 const shared_ptr<IUsbGadgetCallback> &callback, 105 int64_t timeout, int64_t in_transactionId) override; 106 107 ScopedAStatus getCurrentUsbFunctions(const shared_ptr<IUsbGadgetCallback> &callback, 108 int64_t in_transactionId) override; 109 110 ScopedAStatus reset(const shared_ptr<IUsbGadgetCallback> &callback, 111 int64_t in_transactionId) override; 112 113 ScopedAStatus getUsbSpeed(const shared_ptr<IUsbGadgetCallback> &callback, 114 int64_t in_transactionId) override; 115 116 ScopedAStatus setVidPid(const char *vid,const char *pid); 117 118 // Indicates to the kernel that the gadget service is ready and the kernel can 119 // set SDP timeout to a lower value. 120 void updateSdpEnumTimeout(); 121 122 int getI2cBusNumber(); 123 std::string_view getI2cClientPath(); 124 125 private: 126 int mI2cBusNumber; 127 std::string mI2cClientPath; 128 Status tearDownGadget(); 129 Status getUsbGadgetIrqPath(); 130 Status setupFunctions(long functions, const shared_ptr<IUsbGadgetCallback> &callback, 131 uint64_t timeout, int64_t in_transactionId); 132 }; 133 134 } // namespace gadget 135 } // namespace usb 136 } // namespace hardware 137 } // namespace android 138 } // aidl 139