1 /******************************************************************************
2 *
3 * Copyright 2009-2012 Broadcom Corporation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 ******************************************************************************/
18
19 /******************************************************************************
20 *
21 * Filename: bte_main.cc
22 *
23 * Description: Contains BTE core stack initialization and shutdown code
24 *
25 ******************************************************************************/
26
27 #define LOG_TAG "bt_main"
28
29 #include <base/logging.h>
30 #include <base/threading/thread.h>
31 #include <fcntl.h>
32 #include <pthread.h>
33 #include <signal.h>
34 #include <stdlib.h>
35 #include <time.h>
36
37 #include <hardware/bluetooth.h>
38
39 #include "bt_common.h"
40 #include "bt_hci_bdroid.h"
41 #include "bt_utils.h"
42 #include "bta_api.h"
43 #include "btcore/include/module.h"
44 #include "bte.h"
45 #include "btif_common.h"
46 #include "btsnoop.h"
47 #include "btu.h"
48 #include "device/include/interop.h"
49 #include "hci_layer.h"
50 #include "hcimsgs.h"
51 #include "osi/include/alarm.h"
52 #include "osi/include/fixed_queue.h"
53 #include "osi/include/future.h"
54 #include "osi/include/log.h"
55 #include "osi/include/osi.h"
56 #include "shim/hci_layer.h"
57 #include "shim/shim.h"
58 #include "stack_config.h"
59
60 /*******************************************************************************
61 * Constants & Macros
62 ******************************************************************************/
63
64 /* Run-time configuration file for BLE*/
65 #ifndef BTE_BLE_STACK_CONF_FILE
66 // TODO(armansito): Find a better way than searching by a hardcoded path.
67 #if defined(OS_GENERIC)
68 #define BTE_BLE_STACK_CONF_FILE "ble_stack.conf"
69 #else // !defined(OS_GENERIC)
70 #define BTE_BLE_STACK_CONF_FILE "/etc/bluetooth/ble_stack.conf"
71 #endif // defined(OS_GENERIC)
72 #endif // BT_BLE_STACK_CONF_FILE
73
74 /******************************************************************************
75 * Variables
76 *****************************************************************************/
77
78 /*******************************************************************************
79 * Static variables
80 ******************************************************************************/
81 static const hci_t* hci;
82
83 /*******************************************************************************
84 * Externs
85 ******************************************************************************/
86 extern void btu_hci_msg_process(BT_HDR* p_msg);
87
88 /*******************************************************************************
89 * Static functions
90 ******************************************************************************/
91
92 /******************************************************************************
93 *
94 * Function post_to_hci_message_loop
95 *
96 * Description Post an HCI event to the main thread
97 *
98 * Returns None
99 *
100 *****************************************************************************/
post_to_main_message_loop(const base::Location & from_here,BT_HDR * p_msg)101 void post_to_main_message_loop(const base::Location& from_here, BT_HDR* p_msg) {
102 if (do_in_main_thread(from_here, base::Bind(&btu_hci_msg_process, p_msg)) !=
103 BT_STATUS_SUCCESS) {
104 LOG(ERROR) << __func__ << ": do_in_main_thread failed from "
105 << from_here.ToString();
106 }
107 }
108
109 /******************************************************************************
110 *
111 * Function bte_main_boot_entry
112 *
113 * Description BTE MAIN API - Entry point for BTE chip/stack initialization
114 *
115 * Returns None
116 *
117 *****************************************************************************/
bte_main_boot_entry(void)118 void bte_main_boot_entry(void) {
119 module_init(get_module(INTEROP_MODULE));
120
121 hci = hci_layer_get_interface();
122 if (!hci) {
123 LOG_ERROR(LOG_TAG, "%s could not get hci layer interface.", __func__);
124 return;
125 }
126
127 hci->set_data_cb(base::Bind(&post_to_main_message_loop));
128
129 module_init(get_module(STACK_CONFIG_MODULE));
130 }
131
132 /******************************************************************************
133 *
134 * Function bte_main_cleanup
135 *
136 * Description BTE MAIN API - Cleanup code for BTE chip/stack
137 *
138 * Returns None
139 *
140 *****************************************************************************/
bte_main_cleanup()141 void bte_main_cleanup() {
142 module_clean_up(get_module(STACK_CONFIG_MODULE));
143
144 module_clean_up(get_module(INTEROP_MODULE));
145 }
146
147 /******************************************************************************
148 *
149 * Function bte_main_enable
150 *
151 * Description BTE MAIN API - Creates all the BTE tasks. Should be called
152 * part of the Bluetooth stack enable sequence
153 *
154 * Returns None
155 *
156 *****************************************************************************/
bte_main_enable()157 void bte_main_enable() {
158 APPL_TRACE_DEBUG("%s", __func__);
159
160 if (bluetooth::shim::is_gd_shim_enabled()) {
161 LOG_INFO(LOG_TAG, "%s Gd shim module enabled", __func__);
162 module_start_up(get_module(GD_SHIM_MODULE));
163 module_start_up(get_module(GD_HCI_MODULE));
164 } else {
165 module_start_up(get_module(BTSNOOP_MODULE));
166 module_start_up(get_module(HCI_MODULE));
167 }
168
169 BTU_StartUp();
170 }
171
172 /******************************************************************************
173 *
174 * Function bte_main_disable
175 *
176 * Description BTE MAIN API - Destroys all the BTE tasks. Should be called
177 * part of the Bluetooth stack disable sequence
178 *
179 * Returns None
180 *
181 *****************************************************************************/
bte_main_disable(void)182 void bte_main_disable(void) {
183 APPL_TRACE_DEBUG("%s", __func__);
184
185 if (bluetooth::shim::is_gd_shim_enabled()) {
186 LOG_INFO(LOG_TAG, "%s Gd shim module enabled", __func__);
187 module_shut_down(get_module(GD_HCI_MODULE));
188 module_shut_down(get_module(GD_SHIM_MODULE));
189 } else {
190 module_shut_down(get_module(HCI_MODULE));
191 module_shut_down(get_module(BTSNOOP_MODULE));
192 }
193
194 BTU_ShutDown();
195 }
196
197 /******************************************************************************
198 *
199 * Function bte_main_postload_cfg
200 *
201 * Description BTE MAIN API - Stack postload configuration
202 *
203 * Returns None
204 *
205 *****************************************************************************/
bte_main_postload_cfg(void)206 void bte_main_postload_cfg(void) {
207 // TODO(eisenbach): [HIDL] DEPRECATE?
208 }
209
210 /******************************************************************************
211 *
212 * Function bte_main_hci_send
213 *
214 * Description BTE MAIN API - This function is called by the upper stack to
215 * send an HCI message. The function displays a protocol trace
216 * message (if enabled), and then calls the 'transmit' function
217 * associated with the currently selected HCI transport
218 *
219 * Returns None
220 *
221 *****************************************************************************/
bte_main_hci_send(BT_HDR * p_msg,uint16_t event)222 void bte_main_hci_send(BT_HDR* p_msg, uint16_t event) {
223 uint16_t sub_event = event & BT_SUB_EVT_MASK; /* local controller ID */
224
225 p_msg->event = event;
226
227 if ((sub_event == LOCAL_BR_EDR_CONTROLLER_ID) ||
228 (sub_event == LOCAL_BLE_CONTROLLER_ID)) {
229 hci->transmit_downward(event, p_msg);
230 } else {
231 APPL_TRACE_ERROR("Invalid Controller ID. Discarding message.");
232 osi_free(p_msg);
233 }
234 }
235