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 <hardware/bluetooth.h>
31
32 #include "bt_common.h"
33 #include "btcore/include/module.h"
34 #include "bte.h"
35 #include "btif/include/btif_config.h"
36 #include "btsnoop.h"
37 #include "btu.h"
38 #include "device/include/interop.h"
39 #include "hci_layer.h"
40 #include "osi/include/log.h"
41 #include "osi/include/osi.h"
42 #include "shim/hci_layer.h"
43 #include "shim/shim.h"
44 #include "stack_config.h"
45
46 /*******************************************************************************
47 * Static variables
48 ******************************************************************************/
49 static const hci_t* hci;
50
51 /*******************************************************************************
52 * Externs
53 ******************************************************************************/
54 extern void btu_hci_msg_process(BT_HDR* p_msg);
55
56 /*******************************************************************************
57 * Static functions
58 ******************************************************************************/
59
60 /******************************************************************************
61 *
62 * Function post_to_hci_message_loop
63 *
64 * Description Post an HCI event to the main thread
65 *
66 * Returns None
67 *
68 *****************************************************************************/
post_to_main_message_loop(const base::Location & from_here,BT_HDR * p_msg)69 void post_to_main_message_loop(const base::Location& from_here, BT_HDR* p_msg) {
70 if (do_in_main_thread(from_here, base::Bind(&btu_hci_msg_process, p_msg)) !=
71 BT_STATUS_SUCCESS) {
72 LOG(ERROR) << __func__ << ": do_in_main_thread failed from "
73 << from_here.ToString();
74 }
75 }
76
bte_main_init(void)77 void bte_main_init(void) {
78 hci = hci_layer_get_interface();
79 if (!hci) {
80 LOG_ERROR("%s could not get hci layer interface.", __func__);
81 return;
82 }
83
84 hci->set_data_cb(base::Bind(&post_to_main_message_loop));
85 }
86
87 /******************************************************************************
88 *
89 * Function bte_main_hci_send
90 *
91 * Description BTE MAIN API - This function is called by the upper stack to
92 * send an HCI message. The function displays a protocol trace
93 * message (if enabled), and then calls the 'transmit' function
94 * associated with the currently selected HCI transport
95 *
96 * Returns None
97 *
98 *****************************************************************************/
bte_main_hci_send(BT_HDR * p_msg,uint16_t event)99 void bte_main_hci_send(BT_HDR* p_msg, uint16_t event) {
100 uint16_t sub_event = event & BT_SUB_EVT_MASK; /* local controller ID */
101
102 p_msg->event = event;
103
104 if ((sub_event == LOCAL_BR_EDR_CONTROLLER_ID) ||
105 (sub_event == LOCAL_BLE_CONTROLLER_ID)) {
106 hci->transmit_downward(event, p_msg);
107 } else {
108 APPL_TRACE_ERROR("Invalid Controller ID. Discarding message.");
109 osi_free(p_msg);
110 }
111 }
112