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aosp12/device/google/sunfish/usb/UsbGadget.cpp

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/*
* Copyright (C) 2018 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.usb.gadget@1.1-service.sunfish"
#include "UsbGadget.h"
#include <dirent.h>
#include <fcntl.h>
#include <stdio.h>
#include <sys/inotify.h>
#include <sys/mount.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
namespace android {
namespace hardware {
namespace usb {
namespace gadget {
namespace V1_1 {
namespace implementation {
UsbGadget::UsbGadget() {
if (access(OS_DESC_PATH, R_OK) != 0) {
ALOGE("configfs setup not done yet");
abort();
}
}
void currentFunctionsAppliedCallback(bool functionsApplied, void *payload) {
UsbGadget *gadget = (UsbGadget *)payload;
gadget->mCurrentUsbFunctionsApplied = functionsApplied;
}
Return<void> UsbGadget::getCurrentUsbFunctions(const sp<V1_0::IUsbGadgetCallback> &callback) {
Return<void> ret = callback->getCurrentUsbFunctionsCb(
mCurrentUsbFunctions,
mCurrentUsbFunctionsApplied ? Status::FUNCTIONS_APPLIED : Status::FUNCTIONS_NOT_APPLIED);
if (!ret.isOk())
ALOGE("Call to getCurrentUsbFunctionsCb failed %s", ret.description().c_str());
return Void();
}
V1_0::Status UsbGadget::tearDownGadget() {
if (resetGadget() != Status::SUCCESS)
return Status::ERROR;
if (monitorFfs.isMonitorRunning()) {
monitorFfs.reset();
} else {
ALOGI("mMonitor not running");
}
return Status::SUCCESS;
}
static V1_0::Status validateAndSetVidPid(uint64_t functions) {
V1_0::Status ret = Status::SUCCESS;
std::string vendorFunctions = getVendorFunctions();
switch (functions) {
case static_cast<uint64_t>(GadgetFunction::MTP):
if (vendorFunctions == "diag") {
ret = setVidPid("0x05C6", "0x901B");
} else {
if (!(vendorFunctions == "user" || vendorFunctions == "")) {
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = Status::CONFIGURATION_NOT_SUPPORTED;
} else {
ret = setVidPid("0x18d1", "0x4ee1");
}
}
break;
case GadgetFunction::ADB | GadgetFunction::MTP:
if (vendorFunctions == "diag") {
ret = setVidPid("0x05C6", "0x903A");
} else {
if (!(vendorFunctions == "user" || vendorFunctions == "")) {
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = Status::CONFIGURATION_NOT_SUPPORTED;
} else {
ret = setVidPid("0x18d1", "0x4ee2");
}
}
break;
case static_cast<uint64_t>(GadgetFunction::RNDIS):
if (vendorFunctions == "diag") {
ret = setVidPid("0x05C6", "0x902C");
} else if (vendorFunctions == "serial_cdev,diag") {
ret = setVidPid("0x05C6", "0x90B5");
} else if (vendorFunctions == "diag,diag_mdm,qdss,qdss_mdm,serial_cdev,dpl_gsi") {
ret = setVidPid("0x05C6", "0x90E6");
} else {
if (!(vendorFunctions == "user" || vendorFunctions == "")) {
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = Status::CONFIGURATION_NOT_SUPPORTED;
} else {
ret = setVidPid("0x18d1", "0x4ee3");
}
}
break;
case GadgetFunction::ADB | GadgetFunction::RNDIS:
if (vendorFunctions == "diag") {
ret = setVidPid("0x05C6", "0x902D");
} else if (vendorFunctions == "serial_cdev,diag") {
ret = setVidPid("0x05C6", "0x90B6");
} else if (vendorFunctions == "diag,diag_mdm,qdss,qdss_mdm,serial_cdev,dpl_gsi") {
ret = setVidPid("0x05C6", "0x90E7");
} else {
if (!(vendorFunctions == "user" || vendorFunctions == "")) {
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = Status::CONFIGURATION_NOT_SUPPORTED;
} else {
ret = setVidPid("0x18d1", "0x4ee4");
}
}
break;
case static_cast<uint64_t>(GadgetFunction::PTP):
if (!(vendorFunctions == "user" || vendorFunctions == "")) {
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = Status::CONFIGURATION_NOT_SUPPORTED;
} else {
ret = setVidPid("0x18d1", "0x4ee5");
}
break;
case GadgetFunction::ADB | GadgetFunction::PTP:
if (!(vendorFunctions == "user" || vendorFunctions == "")) {
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = Status::CONFIGURATION_NOT_SUPPORTED;
} else {
ret = setVidPid("0x18d1", "0x4ee6");
}
break;
case static_cast<uint64_t>(GadgetFunction::ADB):
if (vendorFunctions == "diag") {
ret = setVidPid("0x05C6", "0x901D");
} else if (vendorFunctions == "diag,serial_cdev,rmnet_gsi") {
ret = setVidPid("0x05C6", "0x9091");
} else if (vendorFunctions == "diag,serial_cdev") {
ret = setVidPid("0x05C6", "0x901F");
} else if (vendorFunctions == "diag,serial_cdev,rmnet_gsi,dpl_gsi,qdss") {
ret = setVidPid("0x05C6", "0x90DB");
} else if (vendorFunctions ==
"diag,diag_mdm,qdss,qdss_mdm,serial_cdev,dpl_gsi,rmnet_gsi") {
ret = setVidPid("0x05C6", "0x90E5");
} else {
if (!(vendorFunctions == "user" || vendorFunctions == "")) {
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = Status::CONFIGURATION_NOT_SUPPORTED;
} else {
ret = setVidPid("0x18d1", "0x4ee7");
}
}
break;
case static_cast<uint64_t>(GadgetFunction::MIDI):
if (!(vendorFunctions == "user" || vendorFunctions == "")) {
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = Status::CONFIGURATION_NOT_SUPPORTED;
} else {
ret = setVidPid("0x18d1", "0x4ee8");
}
break;
case GadgetFunction::ADB | GadgetFunction::MIDI:
if (!(vendorFunctions == "user" || vendorFunctions == "")) {
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = Status::CONFIGURATION_NOT_SUPPORTED;
} else {
ret = setVidPid("0x18d1", "0x4ee9");
}
break;
case static_cast<uint64_t>(GadgetFunction::ACCESSORY):
if (!(vendorFunctions == "user" || vendorFunctions == ""))
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = setVidPid("0x18d1", "0x2d00");
break;
case GadgetFunction::ADB | GadgetFunction::ACCESSORY:
if (!(vendorFunctions == "user" || vendorFunctions == ""))
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = setVidPid("0x18d1", "0x2d01");
break;
case static_cast<uint64_t>(GadgetFunction::AUDIO_SOURCE):
if (!(vendorFunctions == "user" || vendorFunctions == ""))
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = setVidPid("0x18d1", "0x2d02");
break;
case GadgetFunction::ADB | GadgetFunction::AUDIO_SOURCE:
if (!(vendorFunctions == "user" || vendorFunctions == ""))
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = setVidPid("0x18d1", "0x2d03");
break;
case GadgetFunction::ACCESSORY | GadgetFunction::AUDIO_SOURCE:
if (!(vendorFunctions == "user" || vendorFunctions == ""))
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = setVidPid("0x18d1", "0x2d04");
break;
case GadgetFunction::ADB | GadgetFunction::ACCESSORY | GadgetFunction::AUDIO_SOURCE:
if (!(vendorFunctions == "user" || vendorFunctions == ""))
ALOGE("Invalid vendorFunctions set: %s", vendorFunctions.c_str());
ret = setVidPid("0x18d1", "0x2d05");
break;
default:
ALOGE("Combination not supported");
ret = Status::CONFIGURATION_NOT_SUPPORTED;
}
return ret;
}
Return<Status> UsbGadget::reset() {
ALOGI("USB Gadget reset");
if (!WriteStringToFile("none", PULLUP_PATH)) {
ALOGI("Gadget cannot be pulled down");
return Status::ERROR;
}
usleep(kDisconnectWaitUs);
if (!WriteStringToFile(kGadgetName, PULLUP_PATH)) {
ALOGI("Gadget cannot be pulled up");
return Status::ERROR;
}
return Status::SUCCESS;
}
V1_0::Status UsbGadget::setupFunctions(uint64_t functions,
const sp<V1_0::IUsbGadgetCallback> &callback,
uint64_t timeout) {
bool ffsEnabled = false;
int i = 0;
if (addGenericAndroidFunctions(&monitorFfs, functions, &ffsEnabled, &i) != Status::SUCCESS)
return Status::ERROR;
std::string vendorFunctions = getVendorFunctions();
if (vendorFunctions != "") {
ALOGI("enable usbradio debug functions");
char *function = strtok(const_cast<char *>(vendorFunctions.c_str()), ",");
while (function != NULL) {
if (string(function) == "diag" && linkFunction("diag.diag", i++))
return Status::ERROR;
if (string(function) == "diag_mdm" && linkFunction("diag.diag_mdm", i++))
return Status::ERROR;
if (string(function) == "qdss" && linkFunction("qdss.qdss", i++))
return Status::ERROR;
if (string(function) == "qdss_mdm" && linkFunction("qdss.qdss_mdm", i++))
return Status::ERROR;
if (string(function) == "serial_cdev" && linkFunction("cser.dun.0", i++))
return Status::ERROR;
if (string(function) == "dpl_gsi" && linkFunction("gsi.dpl", i++))
return Status::ERROR;
if (string(function) == "rmnet_gsi" && linkFunction("gsi.rmnet", i++))
return Status::ERROR;
function = strtok(NULL, ",");
}
}
if ((functions & GadgetFunction::ADB) != 0) {
ffsEnabled = true;
if (addAdb(&monitorFfs, &i) != Status::SUCCESS)
return Status::ERROR;
}
// Pull up the gadget right away when there are no ffs functions.
if (!ffsEnabled) {
if (!WriteStringToFile(kGadgetName, PULLUP_PATH))
return Status::ERROR;
mCurrentUsbFunctionsApplied = true;
if (callback)
callback->setCurrentUsbFunctionsCb(functions, Status::SUCCESS);
return Status::SUCCESS;
}
monitorFfs.registerFunctionsAppliedCallback(&currentFunctionsAppliedCallback, this);
// Monitors the ffs paths to pull up the gadget when descriptors are written.
// Also takes of the pulling up the gadget again if the userspace process
// dies and restarts.
monitorFfs.startMonitor();
if (kDebug)
ALOGI("Mainthread in Cv");
if (callback) {
bool pullup = monitorFfs.waitForPullUp(timeout);
Return<void> ret = callback->setCurrentUsbFunctionsCb(
functions, pullup ? Status::SUCCESS : Status::ERROR);
if (!ret.isOk())
ALOGE("setCurrentUsbFunctionsCb error %s", ret.description().c_str());
}
return Status::SUCCESS;
}
Return<void> UsbGadget::setCurrentUsbFunctions(uint64_t functions,
const sp<V1_0::IUsbGadgetCallback> &callback,
uint64_t timeout) {
std::unique_lock<std::mutex> lk(mLockSetCurrentFunction);
mCurrentUsbFunctions = functions;
mCurrentUsbFunctionsApplied = false;
// Unlink the gadget and stop the monitor if running.
V1_0::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 == static_cast<uint64_t>(GadgetFunction::NONE)) {
if (callback == NULL)
return Void();
Return<void> ret = callback->setCurrentUsbFunctionsCb(functions, Status::SUCCESS);
if (!ret.isOk())
ALOGE("Error while calling setCurrentUsbFunctionsCb %s", ret.description().c_str());
return Void();
}
status = validateAndSetVidPid(functions);
if (status != Status::SUCCESS) {
goto error;
}
status = setupFunctions(functions, callback, timeout);
if (status != Status::SUCCESS) {
goto error;
}
ALOGI("Usb Gadget setcurrent functions called successfully");
return Void();
error:
ALOGI("Usb Gadget setcurrent functions failed");
if (callback == NULL)
return Void();
Return<void> ret = callback->setCurrentUsbFunctionsCb(functions, status);
if (!ret.isOk())
ALOGE("Error while calling setCurrentUsbFunctionsCb %s", ret.description().c_str());
return Void();
}
} // namespace implementation
} // namespace V1_1
} // namespace gadget
} // namespace usb
} // namespace hardware
} // namespace android
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