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