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 #ifdef CHRE_WWAN_SUPPORT_ENABLED
18
19 #include "chre/core/wwan_request_manager.h"
20
21 #include "chre/core/event_loop_manager.h"
22 #include "chre/platform/fatal_error.h"
23 #include "chre/platform/log.h"
24 #include "chre/util/system/debug_dump.h"
25
26 namespace chre {
27
init()28 void WwanRequestManager::init() {
29 return mPlatformWwan.init();
30 }
31
getCapabilities()32 uint32_t WwanRequestManager::getCapabilities() {
33 return mPlatformWwan.getCapabilities();
34 }
35
requestCellInfo(Nanoapp * nanoapp,const void * cookie)36 bool WwanRequestManager::requestCellInfo(Nanoapp *nanoapp, const void *cookie) {
37 CHRE_ASSERT(nanoapp);
38
39 bool success = false;
40 if (!mCellInfoRequestingNanoappInstanceId.has_value()) {
41 success = mPlatformWwan.requestCellInfo();
42 if (success) {
43 nanoapp->registerForBroadcastEvent(CHRE_EVENT_WWAN_CELL_INFO_RESULT);
44 mCellInfoRequestingNanoappInstanceId = nanoapp->getInstanceId();
45 mCellInfoRequestingNanoappCookie = cookie;
46 }
47 } else {
48 LOGE("Cell info request made while a request is in flight");
49 }
50
51 return success;
52 }
53
handleCellInfoResult(struct chreWwanCellInfoResult * result)54 void WwanRequestManager::handleCellInfoResult(
55 struct chreWwanCellInfoResult *result) {
56 auto callback = [](uint16_t /*type*/, void *data, void * /*extraData*/) {
57 auto *cellInfoResult = static_cast<chreWwanCellInfoResult *>(data);
58 EventLoopManagerSingleton::get()
59 ->getWwanRequestManager()
60 .handleCellInfoResultSync(cellInfoResult);
61 };
62
63 EventLoopManagerSingleton::get()->deferCallback(
64 SystemCallbackType::WwanHandleCellInfoResult, result, callback);
65 }
66
handleCellInfoResultSync(chreWwanCellInfoResult * result)67 void WwanRequestManager::handleCellInfoResultSync(
68 chreWwanCellInfoResult *result) {
69 if (mCellInfoRequestingNanoappInstanceId.has_value()) {
70 result->cookie = mCellInfoRequestingNanoappCookie;
71
72 uint8_t errorCode = result->errorCode;
73 if (errorCode < CHRE_ERROR_SIZE) {
74 mCellInfoErrorHistogram[errorCode]++;
75 } else {
76 LOGE("Undefined error in cellInfoResult: %" PRIu8, errorCode);
77 }
78
79 EventLoopManagerSingleton::get()->getEventLoop().postEventOrDie(
80 CHRE_EVENT_WWAN_CELL_INFO_RESULT, result, freeCellInfoResultCallback,
81 mCellInfoRequestingNanoappInstanceId.value());
82 } else {
83 LOGE("Cell info results received unexpectedly");
84 }
85 }
86
logStateToBuffer(DebugDumpWrapper & debugDump) const87 void WwanRequestManager::logStateToBuffer(DebugDumpWrapper &debugDump) const {
88 debugDump.print("\nWWAN:\n");
89 if (mCellInfoRequestingNanoappInstanceId.has_value()) {
90 debugDump.print(" WWAN request pending nanoappId=%" PRIu16 "\n",
91 mCellInfoRequestingNanoappInstanceId.value());
92 }
93
94 debugDump.print(" API error distribution (error-code indexed):\n");
95 debugDump.print(" Cell Scan:\n");
96 debugDump.logErrorHistogram(mCellInfoErrorHistogram,
97 ARRAY_SIZE(mCellInfoErrorHistogram));
98 }
99
handleFreeCellInfoResult(chreWwanCellInfoResult * result)100 void WwanRequestManager::handleFreeCellInfoResult(
101 chreWwanCellInfoResult *result) {
102 if (mCellInfoRequestingNanoappInstanceId.has_value()) {
103 Nanoapp *nanoapp =
104 EventLoopManagerSingleton::get()
105 ->getEventLoop()
106 .findNanoappByInstanceId(*mCellInfoRequestingNanoappInstanceId);
107 if (nanoapp != nullptr) {
108 nanoapp->unregisterForBroadcastEvent(CHRE_EVENT_WWAN_CELL_INFO_RESULT);
109 } else {
110 LOGE("Freeing cell info for non-existent nanoapp");
111 }
112
113 mCellInfoRequestingNanoappInstanceId.reset();
114 } else {
115 LOGE("Cell info released with no pending request");
116 }
117
118 mPlatformWwan.releaseCellInfoResult(result);
119 }
120
freeCellInfoResultCallback(uint16_t eventType,void * eventData)121 void WwanRequestManager::freeCellInfoResultCallback(uint16_t eventType,
122 void *eventData) {
123 UNUSED_VAR(eventType);
124
125 auto *result = static_cast<chreWwanCellInfoResult *>(eventData);
126 EventLoopManagerSingleton::get()
127 ->getWwanRequestManager()
128 .handleFreeCellInfoResult(result);
129 }
130
131 } // namespace chre
132
133 #endif // CHRE_WWAN_SUPPORT_ENABLED
134