f1140a12b1
The paths of sysfs nodes are different across kernel versions
and i2c bus assignement. Runtime search the correct ones.
Test: Manual test on device. Confirm that file reads related to
file path error do not trigger error.
Bug: 318820040
Change-Id: I1217fcea012865cebe12c935917f12903003fd5b
(ported from commit 0b768c8fbe1e59a4b9efa7b5f7b6a017a81d46fb)
Signed-off-by: RD Babiera <rdbabiera@google.com>
568 lines
22 KiB
C++
568 lines
22 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "android.hardware.usb.gadget.aidl-service"
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#include "UsbGadget.h"
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#include <fcntl.h>
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#include <stdio.h>
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#include <sys/inotify.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include<android-base/properties.h>
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#include <aidl/android/frameworks/stats/IStats.h>
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#include <pixelusb/I2cHelper.h>
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace usb {
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namespace gadget {
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#define NUM_HSI2C_PATHS 2
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using ::android::hardware::google::pixel::usb::getI2cClientPath;
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using ::android::base::GetBoolProperty;
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using ::android::hardware::google::pixel::usb::kUvcEnabled;
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string enabledPath;
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constexpr char* kHsi2cPaths[] = { (char *) "/sys/devices/platform/108d0000.hsi2c",
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(char *) "/sys/devices/platform/10cb0000.hsi2c" };
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constexpr char kTcpcDevName[] = "i2c-max77759tcpc";
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constexpr char kI2cClientId[] = "0025";
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constexpr char kAccessoryLimitCurrent[] = "usb_limit_accessory_current";
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constexpr char kAccessoryLimitCurrentEnable[] = "usb_limit_accessory_enable";
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UsbGadget::UsbGadget() : mGadgetIrqPath(""),
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mI2cClientPath("") {
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if (access(OS_DESC_PATH, R_OK) != 0) {
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ALOGE("configfs setup not done yet");
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abort();
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}
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}
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Status UsbGadget::getUsbGadgetIrqPath() {
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std::string irqs;
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size_t read_pos = 0;
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size_t found_pos = 0;
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if (!ReadFileToString(kProcInterruptsPath, &irqs)) {
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ALOGE("cannot read all interrupts");
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return Status::ERROR;
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}
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while (true) {
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found_pos = irqs.find_first_of("\n", read_pos);
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if (found_pos == std::string::npos) {
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ALOGI("the string of all interrupts is unexpected");
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return Status::ERROR;
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}
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std::string single_irq = irqs.substr(read_pos, found_pos - read_pos);
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if (single_irq.find("dwc3", 0) != std::string::npos) {
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unsigned int dwc3_irq_number;
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size_t dwc3_pos = single_irq.find_first_of(":");
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if (!ParseUint(single_irq.substr(0, dwc3_pos), &dwc3_irq_number)) {
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ALOGI("unknown IRQ strings");
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return Status::ERROR;
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}
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mGadgetIrqPath = kProcIrqPath + single_irq.substr(0, dwc3_pos) + kSmpAffinityList;
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break;
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}
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if (found_pos == irqs.npos) {
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ALOGI("USB gadget doesn't start");
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return Status::ERROR;
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}
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read_pos = found_pos + 1;
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}
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return Status::SUCCESS;
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}
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void currentFunctionsAppliedCallback(bool functionsApplied, void *payload) {
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UsbGadget *gadget = (UsbGadget *)payload;
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gadget->mCurrentUsbFunctionsApplied = functionsApplied;
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}
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ScopedAStatus UsbGadget::getCurrentUsbFunctions(const shared_ptr<IUsbGadgetCallback> &callback,
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int64_t in_transactionId) {
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ScopedAStatus ret = callback->getCurrentUsbFunctionsCb(
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mCurrentUsbFunctions,
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mCurrentUsbFunctionsApplied ? Status::FUNCTIONS_APPLIED : Status::FUNCTIONS_NOT_APPLIED,
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in_transactionId);
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if (!ret.isOk())
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ALOGE("Call to getCurrentUsbFunctionsCb failed %s", ret.getDescription().c_str());
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return ScopedAStatus::ok();
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}
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ScopedAStatus UsbGadget::getUsbSpeed(const shared_ptr<IUsbGadgetCallback> &callback,
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int64_t in_transactionId) {
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std::string current_speed;
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if (ReadFileToString(SPEED_PATH, ¤t_speed)) {
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current_speed = Trim(current_speed);
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ALOGI("current USB speed is %s", current_speed.c_str());
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if (current_speed == "low-speed")
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mUsbSpeed = UsbSpeed::LOWSPEED;
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else if (current_speed == "full-speed")
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mUsbSpeed = UsbSpeed::FULLSPEED;
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else if (current_speed == "high-speed")
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mUsbSpeed = UsbSpeed::HIGHSPEED;
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else if (current_speed == "super-speed")
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mUsbSpeed = UsbSpeed::SUPERSPEED;
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else if (current_speed == "super-speed-plus")
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mUsbSpeed = UsbSpeed::SUPERSPEED_10Gb;
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else if (current_speed == "UNKNOWN")
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mUsbSpeed = UsbSpeed::UNKNOWN;
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else
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mUsbSpeed = UsbSpeed::UNKNOWN;
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} else {
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ALOGE("Fail to read current speed");
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mUsbSpeed = UsbSpeed::UNKNOWN;
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}
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if (callback) {
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ScopedAStatus ret = callback->getUsbSpeedCb(mUsbSpeed, in_transactionId);
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if (!ret.isOk())
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ALOGE("Call to getUsbSpeedCb failed %s", ret.getDescription().c_str());
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}
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return ScopedAStatus::ok();
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}
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Status UsbGadget::tearDownGadget() {
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if (Status(resetGadget()) != Status::SUCCESS){
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return Status::ERROR;
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}
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if (monitorFfs.isMonitorRunning()) {
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monitorFfs.reset();
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} else {
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ALOGI("mMonitor not running");
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}
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return Status::SUCCESS;
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}
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static Status validateAndSetVidPid(uint64_t functions) {
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Status ret = Status::SUCCESS;
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std::string vendorFunctions = getVendorFunctions();
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switch (functions) {
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case GadgetFunction::MTP:
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4ee1"));
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}
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break;
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case GadgetFunction::ADB |
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GadgetFunction::MTP:
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4ee2"));
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}
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break;
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case GadgetFunction::RNDIS:
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case GadgetFunction::RNDIS |
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GadgetFunction::NCM:
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4ee3"));
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}
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break;
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case GadgetFunction::ADB |
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GadgetFunction::RNDIS:
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case GadgetFunction::ADB |
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GadgetFunction::RNDIS |
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GadgetFunction::NCM:
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if (vendorFunctions == "dm") {
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ret = Status(setVidPid("0x04e8", "0x6862"));
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} else {
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4ee4"));
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}
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}
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break;
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case GadgetFunction::PTP:
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4ee5"));
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}
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break;
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case GadgetFunction::ADB |
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GadgetFunction::PTP:
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4ee6"));
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}
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break;
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case GadgetFunction::ADB:
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if (vendorFunctions == "dm") {
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ret = Status(setVidPid("0x04e8", "0x6862"));
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} else if (vendorFunctions == "etr_miu") {
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ret = Status(setVidPid("0x18d1", "0x4ee2"));
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} else if (vendorFunctions == "uwb_acm"){
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ret = Status(setVidPid("0x18d1", "0x4ee2"));
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} else {
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4ee7"));
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}
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}
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break;
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case GadgetFunction::MIDI:
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4ee8"));
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}
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break;
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case GadgetFunction::ADB |
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GadgetFunction::MIDI:
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4ee9"));
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}
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break;
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case GadgetFunction::ACCESSORY:
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if (!(vendorFunctions == "user" || vendorFunctions == ""))
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status(setVidPid("0x18d1", "0x2d00"));
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break;
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case GadgetFunction::ADB |
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GadgetFunction::ACCESSORY:
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if (!(vendorFunctions == "user" || vendorFunctions == ""))
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status(setVidPid("0x18d1", "0x2d01"));
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break;
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case GadgetFunction::AUDIO_SOURCE:
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if (!(vendorFunctions == "user" || vendorFunctions == ""))
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status(setVidPid("0x18d1", "0x2d02"));
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break;
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case GadgetFunction::ADB |
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GadgetFunction::AUDIO_SOURCE:
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if (!(vendorFunctions == "user" || vendorFunctions == ""))
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status(setVidPid("0x18d1", "0x2d03"));
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break;
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case GadgetFunction::ACCESSORY |
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GadgetFunction::AUDIO_SOURCE:
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if (!(vendorFunctions == "user" || vendorFunctions == ""))
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status(setVidPid("0x18d1", "0x2d04"));
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break;
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case GadgetFunction::ADB |
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GadgetFunction::ACCESSORY |
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GadgetFunction::AUDIO_SOURCE:
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if (!(vendorFunctions == "user" || vendorFunctions == ""))
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status(setVidPid("0x18d1", "0x2d05"));
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break;
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case GadgetFunction::NCM:
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if (!(vendorFunctions == "user" || vendorFunctions == ""))
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status(setVidPid("0x18d1", "0x4eeb"));
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break;
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case GadgetFunction::ADB |
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GadgetFunction::NCM:
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if (vendorFunctions == "dm") {
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ret = Status(setVidPid("0x04e8", "0x6862"));
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} else {
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if (!(vendorFunctions == "user" || vendorFunctions == ""))
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status(setVidPid("0x18d1", "0x4eec"));
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}
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break;
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case GadgetFunction::UVC:
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else if (!GetBoolProperty(kUvcEnabled, false)) {
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ALOGE("UVC function not enabled by config");
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4eed"));
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}
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break;
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case GadgetFunction::ADB | GadgetFunction::UVC:
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if (!(vendorFunctions == "user" || vendorFunctions == "")) {
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ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else if (!GetBoolProperty(kUvcEnabled, false)) {
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ALOGE("UVC function not enabled by config");
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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} else {
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ret = Status(setVidPid("0x18d1", "0x4eee"));
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}
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break;
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default:
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ALOGE("Combination not supported");
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ret = Status::CONFIGURATION_NOT_SUPPORTED;
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}
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return ret;
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}
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ScopedAStatus UsbGadget::reset(const shared_ptr<IUsbGadgetCallback> &callback,
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int64_t in_transactionId) {
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ALOGI("USB Gadget reset");
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if (!WriteStringToFile("none", PULLUP_PATH)) {
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ALOGI("Gadget cannot be pulled down");
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if (callback)
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callback->resetCb(Status::ERROR, in_transactionId);
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return ScopedAStatus::fromServiceSpecificErrorWithMessage(
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-1, "Gadget cannot be pulled down");
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}
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usleep(kDisconnectWaitUs);
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if (!WriteStringToFile(kGadgetName, PULLUP_PATH)) {
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ALOGI("Gadget cannot be pulled up");
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if (callback)
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callback->resetCb(Status::ERROR, in_transactionId);
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return ScopedAStatus::fromServiceSpecificErrorWithMessage(
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-1, "Gadget cannot be pulled up");
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}
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if (callback)
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callback->resetCb(Status::SUCCESS, in_transactionId);
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return ScopedAStatus::ok();
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}
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Status UsbGadget::setupFunctions(long functions,
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const shared_ptr<IUsbGadgetCallback> &callback, uint64_t timeout,
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int64_t in_transactionId) {
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bool ffsEnabled = false;
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int i = 0;
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if (Status(addGenericAndroidFunctions(&monitorFfs, functions, &ffsEnabled, &i)) !=
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Status::SUCCESS)
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return Status::ERROR;
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std::string vendorFunctions = getVendorFunctions();
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if (((functions & GadgetFunction::NCM) != 0) && (vendorFunctions != "dm")) {
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if (linkFunction("ncm.gs9", i++))
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return Status::ERROR;
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}
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if (vendorFunctions == "dm") {
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ALOGI("enable usbradio debug functions");
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if ((functions & GadgetFunction::RNDIS) != 0) {
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if (linkFunction("acm.gs6", i++))
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return Status::ERROR;
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if (linkFunction("dm.gs7", i++))
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return Status::ERROR;
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} else {
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if (linkFunction("dm.gs7", i++))
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return Status::ERROR;
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if (linkFunction("acm.gs6", i++))
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return Status::ERROR;
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}
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} else if (vendorFunctions == "etr_miu") {
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ALOGI("enable etr_miu functions");
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if (linkFunction("etr_miu.gs11", i++))
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return Status::ERROR;
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} else if (vendorFunctions == "uwb_acm") {
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ALOGI("enable uwb acm function");
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if (linkFunction("acm.uwb0", i++))
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return Status::ERROR;
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}
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if ((functions & GadgetFunction::ADB) != 0) {
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ffsEnabled = true;
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if (Status(addAdb(&monitorFfs, &i)) != Status::SUCCESS)
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return Status::ERROR;
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}
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if (((functions & GadgetFunction::NCM) != 0) && (vendorFunctions == "dm")) {
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if (linkFunction("ncm.gs9", i++))
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return Status::ERROR;
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}
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// Pull up the gadget right away when there are no ffs functions.
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if (!ffsEnabled) {
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if (!WriteStringToFile(kGadgetName, PULLUP_PATH))
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return Status::ERROR;
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mCurrentUsbFunctionsApplied = true;
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if (callback)
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callback->setCurrentUsbFunctionsCb(functions, Status::SUCCESS, in_transactionId);
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return Status::SUCCESS;
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}
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monitorFfs.registerFunctionsAppliedCallback(¤tFunctionsAppliedCallback, this);
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// Monitors the ffs paths to pull up the gadget when descriptors are written.
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// Also takes of the pulling up the gadget again if the userspace process
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// dies and restarts.
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monitorFfs.startMonitor();
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if (kDebug)
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ALOGI("Mainthread in Cv");
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if (callback) {
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bool pullup = monitorFfs.waitForPullUp(timeout);
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ScopedAStatus ret = callback->setCurrentUsbFunctionsCb(
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functions, pullup ? Status::SUCCESS : Status::ERROR, in_transactionId);
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if (!ret.isOk()) {
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ALOGE("setCurrentUsbFunctionsCb error %s", ret.getDescription().c_str());
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return Status::ERROR;
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}
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}
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return Status::SUCCESS;
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}
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ScopedAStatus UsbGadget::setCurrentUsbFunctions(long functions,
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const shared_ptr<IUsbGadgetCallback> &callback,
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int64_t timeout,
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int64_t in_transactionId) {
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std::unique_lock<std::mutex> lk(mLockSetCurrentFunction);
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std::string current_usb_power_operation_mode, current_usb_type;
|
|
std::string usb_limit_sink_enable;
|
|
std::string accessoryCurrentLimitEnablePath, accessoryCurrentLimitPath;
|
|
|
|
mCurrentUsbFunctions = functions;
|
|
mCurrentUsbFunctionsApplied = false;
|
|
|
|
if (mI2cClientPath.empty()) {
|
|
for (int i = 0; i < NUM_HSI2C_PATHS; i++) {
|
|
mI2cClientPath = getI2cClientPath(kHsi2cPaths[i], kTcpcDevName, kI2cClientId);
|
|
if (mI2cClientPath.empty()) {
|
|
ALOGE("%s: Unable to locate i2c bus node", __func__);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
accessoryCurrentLimitPath = mI2cClientPath + kAccessoryLimitCurrent;
|
|
accessoryCurrentLimitEnablePath = mI2cClientPath + kAccessoryLimitCurrentEnable;
|
|
|
|
// Get the gadget IRQ number before tearDownGadget()
|
|
if (mGadgetIrqPath.empty())
|
|
getUsbGadgetIrqPath();
|
|
|
|
// Unlink the gadget and stop the monitor if running.
|
|
Status status = tearDownGadget();
|
|
if (status != Status::SUCCESS) {
|
|
goto error;
|
|
}
|
|
|
|
ALOGI("Returned from tearDown gadget");
|
|
|
|
// Leave the gadget pulled down to give time for the host to sense disconnect.
|
|
usleep(kDisconnectWaitUs);
|
|
|
|
if (functions == GadgetFunction::NONE) {
|
|
if (callback == NULL)
|
|
return ScopedAStatus::fromServiceSpecificErrorWithMessage(
|
|
-1, "callback == NULL");
|
|
ScopedAStatus ret = callback->setCurrentUsbFunctionsCb(functions, Status::SUCCESS, in_transactionId);
|
|
if (!ret.isOk())
|
|
ALOGE("Error while calling setCurrentUsbFunctionsCb %s", ret.getDescription().c_str());
|
|
return ScopedAStatus::fromServiceSpecificErrorWithMessage(
|
|
-1, "Error while calling setCurrentUsbFunctionsCb");
|
|
}
|
|
|
|
status = validateAndSetVidPid(functions);
|
|
|
|
if (status != Status::SUCCESS) {
|
|
goto error;
|
|
}
|
|
|
|
status = setupFunctions(functions, callback, timeout, in_transactionId);
|
|
if (status != Status::SUCCESS) {
|
|
goto error;
|
|
}
|
|
|
|
if (functions & GadgetFunction::NCM) {
|
|
if (!mGadgetIrqPath.empty()) {
|
|
if (!WriteStringToFile(BIG_CORE, mGadgetIrqPath))
|
|
ALOGI("Cannot move gadget IRQ to big core, path:%s", mGadgetIrqPath.c_str());
|
|
}
|
|
} else {
|
|
if (!mGadgetIrqPath.empty()) {
|
|
if (!WriteStringToFile(MEDIUM_CORE, mGadgetIrqPath))
|
|
ALOGI("Cannot move gadget IRQ to medium core, path:%s", mGadgetIrqPath.c_str());
|
|
}
|
|
}
|
|
|
|
if (ReadFileToString(CURRENT_USB_TYPE_PATH, ¤t_usb_type))
|
|
current_usb_type = Trim(current_usb_type);
|
|
|
|
if (ReadFileToString(CURRENT_USB_POWER_OPERATION_MODE_PATH, ¤t_usb_power_operation_mode))
|
|
current_usb_power_operation_mode = Trim(current_usb_power_operation_mode);
|
|
|
|
if (functions & GadgetFunction::ACCESSORY &&
|
|
current_usb_type == "Unknown SDP [CDP] DCP" &&
|
|
(current_usb_power_operation_mode == "default" ||
|
|
current_usb_power_operation_mode == "1.5A")) {
|
|
if (!WriteStringToFile("1300000", accessoryCurrentLimitPath)) {
|
|
ALOGI("Write 1.3A to limit current fail");
|
|
} else {
|
|
if (!WriteStringToFile("1", accessoryCurrentLimitEnablePath)) {
|
|
ALOGI("Enable limit current fail");
|
|
}
|
|
}
|
|
} else {
|
|
if (!WriteStringToFile("0", accessoryCurrentLimitEnablePath))
|
|
ALOGI("unvote accessory limit current failed");
|
|
}
|
|
|
|
ALOGI("Usb Gadget setcurrent functions called successfully");
|
|
return ScopedAStatus::ok();
|
|
|
|
error:
|
|
ALOGI("Usb Gadget setcurrent functions failed");
|
|
if (callback == NULL)
|
|
return ScopedAStatus::fromServiceSpecificErrorWithMessage(
|
|
-1, "Usb Gadget setcurrent functions failed");
|
|
ScopedAStatus ret = callback->setCurrentUsbFunctionsCb(functions, status, in_transactionId);
|
|
if (!ret.isOk())
|
|
ALOGE("Error while calling setCurrentUsbFunctionsCb %s", ret.getDescription().c_str());
|
|
return ScopedAStatus::fromServiceSpecificErrorWithMessage(
|
|
-1, "Error while calling setCurrentUsbFunctionsCb");
|
|
}
|
|
} // namespace gadget
|
|
} // namespace usb
|
|
} // namespace hardware
|
|
} // namespace android
|
|
} // aidl
|