1 /******************************************************************************
2 *
3 * Copyright 2003-2012 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 * This is the main implementation file for the BTA device manager.
22 *
23 ******************************************************************************/
24
25 #include "bta_api.h"
26 #include "bta_dm_int.h"
27 #include "bta_sys.h"
28
29 /*****************************************************************************
30 * Constants and types
31 ****************************************************************************/
32
33 tBTA_DM_CB bta_dm_cb;
34 tBTA_DM_SEARCH_CB bta_dm_search_cb;
35 tBTA_DM_DI_CB bta_dm_di_cb;
36
37 #define BTA_DM_NUM_ACTIONS (BTA_DM_MAX_EVT & 0x00ff)
38
39 /* type for action functions */
40 typedef void (*tBTA_DM_ACTION)(tBTA_DM_MSG* p_data);
41
42 /* state machine action enumeration list */
43 enum {
44 BTA_DM_API_SEARCH, /* 0 bta_dm_search_start */
45 BTA_DM_API_SEARCH_CANCEL, /* 1 bta_dm_search_cancel */
46 BTA_DM_API_DISCOVER, /* 2 bta_dm_discover */
47 BTA_DM_INQUIRY_CMPL, /* 3 bta_dm_inq_cmpl */
48 BTA_DM_REMT_NAME, /* 4 bta_dm_rmt_name */
49 BTA_DM_SDP_RESULT, /* 5 bta_dm_sdp_result */
50 BTA_DM_SEARCH_CMPL, /* 6 bta_dm_search_cmpl*/
51 BTA_DM_FREE_SDP_DB, /* 7 bta_dm_free_sdp_db */
52 BTA_DM_DISC_RESULT, /* 8 bta_dm_disc_result */
53 BTA_DM_SEARCH_RESULT, /* 9 bta_dm_search_result */
54 BTA_DM_QUEUE_SEARCH, /* 10 bta_dm_queue_search */
55 BTA_DM_QUEUE_DISC, /* 11 bta_dm_queue_disc */
56 BTA_DM_SEARCH_CLEAR_QUEUE, /* 12 bta_dm_search_clear_queue */
57 BTA_DM_SEARCH_CANCEL_CMPL, /* 13 bta_dm_search_cancel_cmpl */
58 BTA_DM_SEARCH_CANCEL_NOTIFY, /* 14 bta_dm_search_cancel_notify */
59 BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL, /* 15 bta_dm_search_cancel_transac_cmpl */
60 BTA_DM_DISC_RMT_NAME, /* 16 bta_dm_disc_rmt_name */
61 BTA_DM_API_DI_DISCOVER, /* 17 bta_dm_di_disc */
62 BTA_DM_CLOSE_GATT_CONN, /* 18 bta_dm_close_gatt_conn */
63 BTA_DM_SEARCH_NUM_ACTIONS /* 19 */
64 };
65
66 /* action function list */
67 const tBTA_DM_ACTION bta_dm_search_action[] = {
68
69 bta_dm_search_start, /* 0 BTA_DM_API_SEARCH */
70 bta_dm_search_cancel, /* 1 BTA_DM_API_SEARCH_CANCEL */
71 bta_dm_discover, /* 2 BTA_DM_API_DISCOVER */
72 bta_dm_inq_cmpl, /* 3 BTA_DM_INQUIRY_CMPL */
73 bta_dm_rmt_name, /* 4 BTA_DM_REMT_NAME */
74 bta_dm_sdp_result, /* 5 BTA_DM_SDP_RESULT */
75 bta_dm_search_cmpl, /* 6 BTA_DM_SEARCH_CMPL */
76 bta_dm_free_sdp_db, /* 7 BTA_DM_FREE_SDP_DB */
77 bta_dm_disc_result, /* 8 BTA_DM_DISC_RESULT */
78 bta_dm_search_result, /* 9 BTA_DM_SEARCH_RESULT */
79 bta_dm_queue_search, /* 10 BTA_DM_QUEUE_SEARCH */
80 bta_dm_queue_disc, /* 11 BTA_DM_QUEUE_DISC */
81 bta_dm_search_clear_queue, /* 12 BTA_DM_SEARCH_CLEAR_QUEUE */
82 bta_dm_search_cancel_cmpl, /* 13 BTA_DM_SEARCH_CANCEL_CMPL */
83 bta_dm_search_cancel_notify, /* 14 BTA_DM_SEARCH_CANCEL_NOTIFY */
84 bta_dm_search_cancel_transac_cmpl, /* 15 BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL
85 */
86 bta_dm_disc_rmt_name, /* 16 BTA_DM_DISC_RMT_NAME */
87 bta_dm_di_disc, /* 17 BTA_DM_API_DI_DISCOVER */
88 bta_dm_close_gatt_conn};
89
90 #define BTA_DM_SEARCH_IGNORE BTA_DM_SEARCH_NUM_ACTIONS
91 /* state table information */
92 #define BTA_DM_SEARCH_ACTIONS 2 /* number of actions */
93 #define BTA_DM_SEARCH_NEXT_STATE 2 /* position of next state */
94 #define BTA_DM_SEARCH_NUM_COLS 3 /* number of columns in state tables */
95
96 /* state table for listen state */
97 const uint8_t bta_dm_search_idle_st_table[][BTA_DM_SEARCH_NUM_COLS] = {
98
99 /* Event Action 1
100 Action 2 Next State */
101 /* API_SEARCH */ {BTA_DM_API_SEARCH, BTA_DM_SEARCH_IGNORE,
102 BTA_DM_SEARCH_ACTIVE},
103 /* API_SEARCH_CANCEL */ {BTA_DM_SEARCH_CANCEL_NOTIFY, BTA_DM_SEARCH_IGNORE,
104 BTA_DM_SEARCH_IDLE},
105 /* API_SEARCH_DISC */ {BTA_DM_API_DISCOVER, BTA_DM_SEARCH_IGNORE,
106 BTA_DM_DISCOVER_ACTIVE},
107 /* INQUIRY_CMPL */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
108 BTA_DM_SEARCH_IDLE},
109 /* REMT_NAME_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
110 BTA_DM_SEARCH_IDLE},
111 /* SDP_RESULT_EVT */ {BTA_DM_FREE_SDP_DB, BTA_DM_SEARCH_IGNORE,
112 BTA_DM_SEARCH_IDLE},
113 /* SEARCH_CMPL_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
114 BTA_DM_SEARCH_IDLE},
115 /* DISCV_RES_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
116 BTA_DM_SEARCH_IDLE},
117 /* API_DI_DISCOVER_EVT */ {BTA_DM_API_DI_DISCOVER, BTA_DM_SEARCH_IGNORE,
118 BTA_DM_SEARCH_ACTIVE},
119 /* DISC_CLOSE_TOUT_EVT */
120 {BTA_DM_CLOSE_GATT_CONN, BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IDLE}};
121 const uint8_t bta_dm_search_search_active_st_table[][BTA_DM_SEARCH_NUM_COLS] = {
122
123 /* Event Action 1
124 Action 2 Next State */
125 /* API_SEARCH */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
126 BTA_DM_SEARCH_ACTIVE},
127 /* API_SEARCH_CANCEL */ {BTA_DM_API_SEARCH_CANCEL, BTA_DM_SEARCH_IGNORE,
128 BTA_DM_SEARCH_CANCELLING},
129 /* API_SEARCH_DISC */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
130 BTA_DM_SEARCH_ACTIVE},
131 /* INQUIRY_CMPL */ {BTA_DM_INQUIRY_CMPL, BTA_DM_SEARCH_IGNORE,
132 BTA_DM_SEARCH_ACTIVE},
133 /* REMT_NAME_EVT */ {BTA_DM_REMT_NAME, BTA_DM_SEARCH_IGNORE,
134 BTA_DM_SEARCH_ACTIVE},
135 /* SDP_RESULT_EVT */ {BTA_DM_SDP_RESULT, BTA_DM_SEARCH_IGNORE,
136 BTA_DM_SEARCH_ACTIVE},
137 /* SEARCH_CMPL_EVT */ {BTA_DM_SEARCH_CMPL, BTA_DM_SEARCH_IGNORE,
138 BTA_DM_SEARCH_IDLE},
139 /* DISCV_RES_EVT */ {BTA_DM_SEARCH_RESULT, BTA_DM_SEARCH_IGNORE,
140 BTA_DM_SEARCH_ACTIVE},
141 /* API_DI_DISCOVER_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
142 BTA_DM_SEARCH_ACTIVE},
143 /* DISC_CLOSE_TOUT_EVT */
144 {BTA_DM_CLOSE_GATT_CONN, BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_ACTIVE}
145
146 };
147
148 const uint8_t
149 bta_dm_search_search_cancelling_st_table[][BTA_DM_SEARCH_NUM_COLS] = {
150
151 /* Event Action 1
152 Action 2 Next State */
153 /* API_SEARCH */ {BTA_DM_QUEUE_SEARCH, BTA_DM_SEARCH_IGNORE,
154 BTA_DM_SEARCH_CANCELLING},
155 /* API_SEARCH_CANCEL */ {BTA_DM_SEARCH_CLEAR_QUEUE,
156 BTA_DM_SEARCH_CANCEL_NOTIFY,
157 BTA_DM_SEARCH_CANCELLING},
158 /* API_SEARCH_DISC */ {BTA_DM_QUEUE_DISC, BTA_DM_SEARCH_IGNORE,
159 BTA_DM_SEARCH_CANCELLING},
160 /* INQUIRY_CMPL */ {BTA_DM_SEARCH_CANCEL_CMPL, BTA_DM_SEARCH_IGNORE,
161 BTA_DM_SEARCH_IDLE},
162 /* REMT_NAME_EVT */ {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL,
163 BTA_DM_SEARCH_CANCEL_CMPL, BTA_DM_SEARCH_IDLE},
164 /* SDP_RESULT_EVT */ {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL,
165 BTA_DM_SEARCH_CANCEL_CMPL, BTA_DM_SEARCH_IDLE},
166 /* SEARCH_CMPL_EVT */ {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL,
167 BTA_DM_SEARCH_CANCEL_CMPL, BTA_DM_SEARCH_IDLE},
168 /* DISCV_RES_EVT */ {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL,
169 BTA_DM_SEARCH_CANCEL_CMPL, BTA_DM_SEARCH_IDLE},
170 /* API_DI_DISCOVER_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
171 BTA_DM_SEARCH_CANCELLING},
172 /* DISC_CLOSE_TOUT_EVT */
173 {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_CANCELLING}};
174
175 const uint8_t bta_dm_search_disc_active_st_table[][BTA_DM_SEARCH_NUM_COLS] = {
176
177 /* Event Action 1
178 Action 2 Next State */
179 /* API_SEARCH */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
180 BTA_DM_DISCOVER_ACTIVE},
181 /* API_SEARCH_CANCEL */ {BTA_DM_SEARCH_CANCEL_NOTIFY, BTA_DM_SEARCH_IGNORE,
182 BTA_DM_SEARCH_CANCELLING},
183 /* API_SEARCH_DISC */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
184 BTA_DM_DISCOVER_ACTIVE},
185 /* INQUIRY_CMPL */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
186 BTA_DM_DISCOVER_ACTIVE},
187 /* REMT_NAME_EVT */ {BTA_DM_DISC_RMT_NAME, BTA_DM_SEARCH_IGNORE,
188 BTA_DM_DISCOVER_ACTIVE},
189 /* SDP_RESULT_EVT */ {BTA_DM_SDP_RESULT, BTA_DM_SEARCH_IGNORE,
190 BTA_DM_DISCOVER_ACTIVE},
191 /* SEARCH_CMPL_EVT */ {BTA_DM_SEARCH_CMPL, BTA_DM_SEARCH_IGNORE,
192 BTA_DM_SEARCH_IDLE},
193 /* DISCV_RES_EVT */ {BTA_DM_DISC_RESULT, BTA_DM_SEARCH_IGNORE,
194 BTA_DM_DISCOVER_ACTIVE},
195 /* API_DI_DISCOVER_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
196 BTA_DM_DISCOVER_ACTIVE},
197 /* DISC_CLOSE_TOUT_EVT */
198 {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE, BTA_DM_DISCOVER_ACTIVE}};
199
200 typedef const uint8_t (*tBTA_DM_ST_TBL)[BTA_DM_SEARCH_NUM_COLS];
201
202 /* state table */
203 const tBTA_DM_ST_TBL bta_dm_search_st_tbl[] = {
204 bta_dm_search_idle_st_table, bta_dm_search_search_active_st_table,
205 bta_dm_search_search_cancelling_st_table,
206 bta_dm_search_disc_active_st_table};
207
208 /*******************************************************************************
209 *
210 * Function bta_dm_sm_search_disable
211 *
212 * Description unregister BTA SEARCH DM
213 *
214 *
215 * Returns void
216 *
217 ******************************************************************************/
bta_dm_search_sm_disable()218 void bta_dm_search_sm_disable() { bta_sys_deregister(BTA_ID_DM_SEARCH); }
219
220 /*******************************************************************************
221 *
222 * Function bta_dm_search_sm_execute
223 *
224 * Description State machine event handling function for DM
225 *
226 *
227 * Returns void
228 *
229 ******************************************************************************/
bta_dm_search_sm_execute(BT_HDR * p_msg)230 bool bta_dm_search_sm_execute(BT_HDR* p_msg) {
231 tBTA_DM_ST_TBL state_table;
232 uint8_t action;
233 int i;
234
235 APPL_TRACE_EVENT("bta_dm_search_sm_execute state:%d, event:0x%x",
236 bta_dm_search_cb.state, p_msg->event);
237
238 /* look up the state table for the current state */
239 state_table = bta_dm_search_st_tbl[bta_dm_search_cb.state];
240
241 bta_dm_search_cb.state =
242 state_table[p_msg->event & 0x00ff][BTA_DM_SEARCH_NEXT_STATE];
243
244 /* execute action functions */
245 for (i = 0; i < BTA_DM_SEARCH_ACTIONS; i++) {
246 action = state_table[p_msg->event & 0x00ff][i];
247 if (action != BTA_DM_SEARCH_IGNORE) {
248 (*bta_dm_search_action[action])((tBTA_DM_MSG*)p_msg);
249 } else {
250 break;
251 }
252 }
253 return true;
254 }
255