1 /*
2 * Copyright 2019 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 #define LOG_TAG "bt_gd_shim"
18
19 #include "main/shim/stack.h"
20
21 #include <bluetooth/log.h>
22 #include <com_android_bluetooth_flags.h>
23 #include <fcntl.h>
24 #include <unistd.h>
25
26 #include <string>
27
28 #include "common/strings.h"
29 #include "hal/hci_hal.h"
30 #include "hci/acl_manager.h"
31 #include "hci/acl_manager/acl_scheduler.h"
32 #include "hci/controller.h"
33 #include "hci/controller_interface.h"
34 #include "hci/distance_measurement_manager.h"
35 #include "hci/hci_layer.h"
36 #include "hci/le_advertising_manager.h"
37 #include "hci/le_scanning_manager.h"
38 #include "hci/msft.h"
39 #include "hci/remote_name_request.h"
40 #include "lpp/lpp_offload_manager.h"
41 #include "main/shim/acl.h"
42 #include "main/shim/acl_interface.h"
43 #include "main/shim/distance_measurement_manager.h"
44 #include "main/shim/entry.h"
45 #include "main/shim/hci_layer.h"
46 #include "main/shim/le_advertising_manager.h"
47 #include "main/shim/le_scanning_manager.h"
48 #include "metrics/counter_metrics.h"
49 #include "shim/dumpsys.h"
50 #include "storage/storage_module.h"
51 #if TARGET_FLOSS
52 #include "sysprops/sysprops_module.h"
53 #endif
54
55 namespace bluetooth {
56 namespace shim {
57
58 using ::bluetooth::common::StringFormat;
59
60 struct Stack::impl {
61 Acl* acl_ = nullptr;
62 };
63
Stack()64 Stack::Stack() { pimpl_ = std::make_shared<Stack::impl>(); }
65
GetInstance()66 Stack* Stack::GetInstance() {
67 static Stack instance;
68 return &instance;
69 }
70
StartEverything()71 void Stack::StartEverything() {
72 std::lock_guard<std::recursive_mutex> lock(mutex_);
73 log::assert_that(!is_running_, "Gd stack already running");
74 log::info("Starting Gd stack");
75 ModuleList modules;
76
77 #if TARGET_FLOSS
78 modules.add<sysprops::SyspropsModule>();
79 #else
80 if (com::android::bluetooth::flags::socket_settings_api()) { // Added with aosp/3286716
81 modules.add<lpp::LppOffloadManager>();
82 }
83 #endif
84 modules.add<metrics::CounterMetrics>();
85 modules.add<hal::HciHal>();
86 modules.add<hci::HciLayer>();
87 modules.add<storage::StorageModule>();
88 modules.add<shim::Dumpsys>();
89
90 modules.add<hci::Controller>();
91 modules.add<hci::acl_manager::AclScheduler>();
92 modules.add<hci::AclManager>();
93 modules.add<hci::RemoteNameRequestModule>();
94 modules.add<hci::LeAdvertisingManager>();
95 modules.add<hci::MsftExtensionManager>();
96 modules.add<hci::LeScanningManager>();
97 modules.add<hci::DistanceMeasurementManager>();
98 Start(&modules);
99 is_running_ = true;
100 // Make sure the leaf modules are started
101 log::assert_that(stack_manager_.GetInstance<storage::StorageModule>() != nullptr,
102 "assert failed: stack_manager_.GetInstance<storage::StorageModule>() != "
103 "nullptr");
104 log::assert_that(stack_manager_.GetInstance<shim::Dumpsys>() != nullptr,
105 "assert failed: stack_manager_.GetInstance<shim::Dumpsys>() != nullptr");
106 if (stack_manager_.IsStarted<hci::Controller>()) {
107 pimpl_->acl_ =
108 new Acl(stack_handler_, GetAclInterface(), GetController()->GetLeFilterAcceptListSize(),
109 GetController()->GetLeResolvingListSize());
110 } else {
111 log::error("Unable to create shim ACL layer as Controller has not started");
112 }
113
114 bluetooth::shim::hci_on_reset_complete();
115 bluetooth::shim::init_advertising_manager();
116 bluetooth::shim::init_scanning_manager();
117 bluetooth::shim::init_distance_measurement_manager();
118 }
119
StartModuleStack(const ModuleList * modules,const os::Thread * thread)120 void Stack::StartModuleStack(const ModuleList* modules, const os::Thread* thread) {
121 std::lock_guard<std::recursive_mutex> lock(mutex_);
122 log::assert_that(!is_running_, "Gd stack already running");
123 stack_thread_ = const_cast<os::Thread*>(thread);
124 log::info("Starting Gd stack");
125
126 stack_manager_.StartUp(const_cast<ModuleList*>(modules), stack_thread_);
127 stack_handler_ = new os::Handler(stack_thread_);
128
129 num_modules_ = modules->NumModules();
130 is_running_ = true;
131 }
132
Start(ModuleList * modules)133 void Stack::Start(ModuleList* modules) {
134 log::assert_that(!is_running_, "Gd stack already running");
135 log::info("Starting Gd stack");
136
137 stack_thread_ = new os::Thread("gd_stack_thread", os::Thread::Priority::REAL_TIME);
138 stack_manager_.StartUp(modules, stack_thread_);
139
140 stack_handler_ = new os::Handler(stack_thread_);
141
142 log::info("Successfully toggled Gd stack");
143 }
144
Stop()145 void Stack::Stop() {
146 std::lock_guard<std::recursive_mutex> lock(mutex_);
147 bluetooth::shim::hci_on_shutting_down();
148
149 // Make sure gd acl flag is enabled and we started it up
150 if (pimpl_->acl_ != nullptr) {
151 pimpl_->acl_->FinalShutdown();
152 delete pimpl_->acl_;
153 pimpl_->acl_ = nullptr;
154 }
155
156 log::assert_that(is_running_, "Gd stack not running");
157 is_running_ = false;
158
159 stack_handler_->Clear();
160
161 stack_manager_.ShutDown();
162
163 delete stack_handler_;
164 stack_handler_ = nullptr;
165
166 stack_thread_->Stop();
167 delete stack_thread_;
168 stack_thread_ = nullptr;
169
170 log::info("Successfully shut down Gd stack");
171 }
172
IsRunning()173 bool Stack::IsRunning() {
174 std::lock_guard<std::recursive_mutex> lock(mutex_);
175 return is_running_;
176 }
177
GetStackManager()178 StackManager* Stack::GetStackManager() {
179 std::lock_guard<std::recursive_mutex> lock(mutex_);
180 log::assert_that(is_running_, "assert failed: is_running_");
181 return &stack_manager_;
182 }
183
GetStackManager() const184 const StackManager* Stack::GetStackManager() const {
185 std::lock_guard<std::recursive_mutex> lock(mutex_);
186 log::assert_that(is_running_, "assert failed: is_running_");
187 return &stack_manager_;
188 }
189
GetAcl()190 Acl* Stack::GetAcl() {
191 std::lock_guard<std::recursive_mutex> lock(mutex_);
192 log::assert_that(is_running_, "assert failed: is_running_");
193 log::assert_that(pimpl_->acl_ != nullptr, "Acl shim layer has not been created");
194 return pimpl_->acl_;
195 }
196
GetHandler()197 os::Handler* Stack::GetHandler() {
198 std::lock_guard<std::recursive_mutex> lock(mutex_);
199 log::assert_that(is_running_, "assert failed: is_running_");
200 return stack_handler_;
201 }
202
IsDumpsysModuleStarted() const203 bool Stack::IsDumpsysModuleStarted() const {
204 std::lock_guard<std::recursive_mutex> lock(mutex_);
205 return GetStackManager()->IsStarted<Dumpsys>();
206 }
207
LockForDumpsys(std::function<void ()> dumpsys_callback)208 bool Stack::LockForDumpsys(std::function<void()> dumpsys_callback) {
209 std::lock_guard<std::recursive_mutex> lock(mutex_);
210 if (is_running_) {
211 dumpsys_callback();
212 }
213 return is_running_;
214 }
215
216 } // namespace shim
217 } // namespace bluetooth
218