1 /*
2 * Copyright (C) 2021 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_BLE_SUPPORT_ENABLED
18
19 #include "chre/platform/platform_ble.h"
20
21 #include <cinttypes>
22
23 #include "chre/core/event_loop_manager.h"
24 #include "chre/platform/log.h"
25 #include "chre/platform/shared/bt_snoop_log.h"
26 #include "chre/platform/shared/pal_system_api.h"
27 #include "chre_api/chre/ble.h"
28
29 namespace chre {
30
31 const chrePalBleCallbacks PlatformBleBase::sBleCallbacks = {
32 PlatformBleBase::requestStateResync,
33 PlatformBleBase::scanStatusChangeCallback,
34 PlatformBleBase::advertisingEventCallback,
35 PlatformBleBase::readRssiCallback,
36 PlatformBleBase::flushCallback,
37 PlatformBleBase::handleBtSnoopLog,
38 };
39
~PlatformBle()40 PlatformBle::~PlatformBle() {
41 if (mBleApi != nullptr) {
42 LOGD("Platform BLE closing");
43 prePalApiCall(PalType::BLE);
44 mBleApi->close();
45 LOGD("Platform BLE closed");
46 }
47 }
48
init()49 void PlatformBle::init() {
50 prePalApiCall(PalType::BLE);
51 mBleApi = chrePalBleGetApi(CHRE_PAL_BLE_API_CURRENT_VERSION);
52 if (mBleApi != nullptr) {
53 if (!mBleApi->open(&gChrePalSystemApi, &sBleCallbacks)) {
54 LOGE("BLE PAL open returned false");
55
56 #ifdef CHRE_TELEMETRY_SUPPORT_ENABLED
57 EventLoopManagerSingleton::get()->getTelemetryManager().onPalOpenFailure(
58 TelemetryManager::PalType::BLE);
59 #endif // CHRE_TELEMETRY_SUPPORT_ENABLED
60
61 mBleApi = nullptr;
62 } else {
63 LOGD("Opened BLE PAL version 0x%08" PRIx32, mBleApi->moduleVersion);
64 }
65 } else {
66 LOGW("Requested BLE PAL (version 0x%08" PRIx32 ") not found",
67 CHRE_PAL_BLE_API_CURRENT_VERSION);
68 }
69 }
70
getCapabilities()71 uint32_t PlatformBle::getCapabilities() {
72 if (mBleApi != nullptr) {
73 prePalApiCall(PalType::BLE);
74 return mBleApi->getCapabilities();
75 } else {
76 return CHRE_BLE_CAPABILITIES_NONE;
77 }
78 }
79
getFilterCapabilities()80 uint32_t PlatformBle::getFilterCapabilities() {
81 if (mBleApi != nullptr) {
82 prePalApiCall(PalType::BLE);
83 return mBleApi->getFilterCapabilities();
84 } else {
85 return CHRE_BLE_FILTER_CAPABILITIES_NONE;
86 }
87 }
88
startScanAsync(chreBleScanMode mode,uint32_t reportDelayMs,const struct chreBleScanFilterV1_9 * filter)89 bool PlatformBle::startScanAsync(chreBleScanMode mode, uint32_t reportDelayMs,
90 const struct chreBleScanFilterV1_9 *filter) {
91 if (mBleApi != nullptr) {
92 prePalApiCall(PalType::BLE);
93 return mBleApi->startScan(mode, reportDelayMs, filter);
94 } else {
95 return false;
96 }
97 }
98
stopScanAsync()99 bool PlatformBle::stopScanAsync() {
100 if (mBleApi != nullptr) {
101 prePalApiCall(PalType::BLE);
102 return mBleApi->stopScan();
103 } else {
104 return false;
105 }
106 }
107
releaseAdvertisingEvent(struct chreBleAdvertisementEvent * event)108 void PlatformBle::releaseAdvertisingEvent(
109 struct chreBleAdvertisementEvent *event) {
110 prePalApiCall(PalType::BLE);
111 mBleApi->releaseAdvertisingEvent(event);
112 }
113
requestStateResync()114 void PlatformBleBase::requestStateResync() {
115 EventLoopManagerSingleton::get()
116 ->getBleRequestManager()
117 .handleRequestStateResyncCallback();
118 }
119
scanStatusChangeCallback(bool enabled,uint8_t errorCode)120 void PlatformBleBase::scanStatusChangeCallback(bool enabled,
121 uint8_t errorCode) {
122 EventLoopManagerSingleton::get()->getBleRequestManager().handlePlatformChange(
123 enabled, errorCode);
124 }
125
advertisingEventCallback(struct chreBleAdvertisementEvent * event)126 void PlatformBleBase::advertisingEventCallback(
127 struct chreBleAdvertisementEvent *event) {
128 EventLoopManagerSingleton::get()
129 ->getBleRequestManager()
130 .handleAdvertisementEvent(event);
131 }
132
readRssiAsync(uint16_t connectionHandle)133 bool PlatformBle::readRssiAsync(uint16_t connectionHandle) {
134 if (mBleApi != nullptr) {
135 prePalApiCall(PalType::BLE);
136 return mBleApi->readRssi(connectionHandle);
137 } else {
138 return false;
139 }
140 }
141
readRssiCallback(uint8_t errorCode,uint16_t connectionHandle,int8_t rssi)142 void PlatformBleBase::readRssiCallback(uint8_t errorCode,
143 uint16_t connectionHandle, int8_t rssi) {
144 EventLoopManagerSingleton::get()->getBleRequestManager().handleReadRssi(
145 errorCode, connectionHandle, rssi);
146 }
147
flushAsync()148 bool PlatformBle::flushAsync() {
149 if (mBleApi != nullptr) {
150 prePalApiCall(PalType::BLE);
151 return mBleApi->flush();
152 } else {
153 return false;
154 }
155 }
156
flushCallback(uint8_t errorCode)157 void PlatformBleBase::flushCallback(uint8_t errorCode) {
158 EventLoopManagerSingleton::get()->getBleRequestManager().handleFlushComplete(
159 errorCode);
160 }
161
handleBtSnoopLog(bool isTxToBtController,const uint8_t * buffer,size_t size)162 void PlatformBleBase::handleBtSnoopLog(bool isTxToBtController,
163 const uint8_t *buffer, size_t size) {
164 BtSnoopDirection direction =
165 isTxToBtController ? BtSnoopDirection::OUTGOING_TO_ARBITER
166 : BtSnoopDirection::INCOMING_FROM_BT_CONTROLLER;
167 chrePlatformBtSnoopLog(direction, buffer, size);
168 }
169
170 } // namespace chre
171
172 #endif // CHRE_BLE_SUPPORT_ENABLED
173