1 /*
2 * Copyright (C) 2017 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 "chre/core/wwan_request_manager.h"
18
19 #include "chre/core/event_loop_manager.h"
20 #include "chre/platform/fatal_error.h"
21 #include "chre/platform/log.h"
22 #include "chre/util/system/debug_dump.h"
23
24 namespace chre {
25
init()26 void WwanRequestManager::init() {
27 return mPlatformWwan.init();
28 }
29
getCapabilities()30 uint32_t WwanRequestManager::getCapabilities() {
31 return mPlatformWwan.getCapabilities();
32 }
33
requestCellInfo(Nanoapp * nanoapp,const void * cookie)34 bool WwanRequestManager::requestCellInfo(Nanoapp *nanoapp, const void *cookie) {
35 CHRE_ASSERT(nanoapp);
36
37 bool success = false;
38 if (!mCellInfoRequestingNanoappInstanceId.has_value()) {
39 success = mPlatformWwan.requestCellInfo();
40 if (success) {
41 nanoapp->registerForBroadcastEvent(CHRE_EVENT_WWAN_CELL_INFO_RESULT);
42 mCellInfoRequestingNanoappInstanceId = nanoapp->getInstanceId();
43 mCellInfoRequestingNanoappCookie = cookie;
44 }
45 } else {
46 LOGE("Cell info request made while a request is in flight");
47 }
48
49 return success;
50 }
51
handleCellInfoResult(struct chreWwanCellInfoResult * result)52 void WwanRequestManager::handleCellInfoResult(
53 struct chreWwanCellInfoResult *result) {
54 auto callback = [](uint16_t /*type*/, void *data, void * /*extraData*/) {
55 auto *cellInfoResult = static_cast<chreWwanCellInfoResult *>(data);
56 EventLoopManagerSingleton::get()
57 ->getWwanRequestManager()
58 .handleCellInfoResultSync(cellInfoResult);
59 };
60
61 EventLoopManagerSingleton::get()->deferCallback(
62 SystemCallbackType::WwanHandleCellInfoResult, result, callback);
63 }
64
handleCellInfoResultSync(chreWwanCellInfoResult * result)65 void WwanRequestManager::handleCellInfoResultSync(
66 chreWwanCellInfoResult *result) {
67 if (mCellInfoRequestingNanoappInstanceId.has_value()) {
68 result->cookie = mCellInfoRequestingNanoappCookie;
69 EventLoopManagerSingleton::get()->getEventLoop().postEventOrDie(
70 CHRE_EVENT_WWAN_CELL_INFO_RESULT, result, freeCellInfoResultCallback,
71 mCellInfoRequestingNanoappInstanceId.value());
72 } else {
73 LOGE("Cell info results received unexpectedly");
74 }
75 }
76
logStateToBuffer(DebugDumpWrapper & debugDump) const77 void WwanRequestManager::logStateToBuffer(DebugDumpWrapper &debugDump) const {
78 debugDump.print("\nWWAN:\n");
79 if (mCellInfoRequestingNanoappInstanceId.has_value()) {
80 debugDump.print(" WWAN request pending nanoappId=%" PRIu32 "\n",
81 mCellInfoRequestingNanoappInstanceId.value());
82 }
83 }
84
handleFreeCellInfoResult(chreWwanCellInfoResult * result)85 void WwanRequestManager::handleFreeCellInfoResult(
86 chreWwanCellInfoResult *result) {
87 if (mCellInfoRequestingNanoappInstanceId.has_value()) {
88 Nanoapp *nanoapp =
89 EventLoopManagerSingleton::get()
90 ->getEventLoop()
91 .findNanoappByInstanceId(*mCellInfoRequestingNanoappInstanceId);
92 if (nanoapp != nullptr) {
93 nanoapp->unregisterForBroadcastEvent(CHRE_EVENT_WWAN_CELL_INFO_RESULT);
94 } else {
95 LOGE("Freeing cell info for non-existent nanoapp");
96 }
97
98 mCellInfoRequestingNanoappInstanceId.reset();
99 } else {
100 LOGE("Cell info released with no pending request");
101 }
102
103 mPlatformWwan.releaseCellInfoResult(result);
104 }
105
freeCellInfoResultCallback(uint16_t eventType,void * eventData)106 void WwanRequestManager::freeCellInfoResultCallback(uint16_t eventType,
107 void *eventData) {
108 auto *result = static_cast<chreWwanCellInfoResult *>(eventData);
109 EventLoopManagerSingleton::get()
110 ->getWwanRequestManager()
111 .handleFreeCellInfoResult(result);
112 }
113
114 } // namespace chre
115
