/******************************************************************************
*
* Copyright 2003-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This is the main implementation file for the BTA device manager.
*
******************************************************************************/
#include "bta_api.h"
#include "bta_dm_int.h"
#include "bta_sys.h"
/*****************************************************************************
* Constants and types
****************************************************************************/
tBTA_DM_CB bta_dm_cb;
tBTA_DM_SEARCH_CB bta_dm_search_cb;
tBTA_DM_DI_CB bta_dm_di_cb;
#define BTA_DM_NUM_ACTIONS (BTA_DM_MAX_EVT & 0x00ff)
/* type for action functions */
typedef void (*tBTA_DM_ACTION)(tBTA_DM_MSG* p_data);
/* state machine action enumeration list */
enum {
BTA_DM_API_SEARCH, /* 0 bta_dm_search_start */
BTA_DM_API_SEARCH_CANCEL, /* 1 bta_dm_search_cancel */
BTA_DM_API_DISCOVER, /* 2 bta_dm_discover */
BTA_DM_INQUIRY_CMPL, /* 3 bta_dm_inq_cmpl */
BTA_DM_REMT_NAME, /* 4 bta_dm_rmt_name */
BTA_DM_SDP_RESULT, /* 5 bta_dm_sdp_result */
BTA_DM_SEARCH_CMPL, /* 6 bta_dm_search_cmpl*/
BTA_DM_FREE_SDP_DB, /* 7 bta_dm_free_sdp_db */
BTA_DM_DISC_RESULT, /* 8 bta_dm_disc_result */
BTA_DM_SEARCH_RESULT, /* 9 bta_dm_search_result */
BTA_DM_QUEUE_SEARCH, /* 10 bta_dm_queue_search */
BTA_DM_QUEUE_DISC, /* 11 bta_dm_queue_disc */
BTA_DM_SEARCH_CLEAR_QUEUE, /* 12 bta_dm_search_clear_queue */
BTA_DM_SEARCH_CANCEL_CMPL, /* 13 bta_dm_search_cancel_cmpl */
BTA_DM_SEARCH_CANCEL_NOTIFY, /* 14 bta_dm_search_cancel_notify */
BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL, /* 15 bta_dm_search_cancel_transac_cmpl */
BTA_DM_DISC_RMT_NAME, /* 16 bta_dm_disc_rmt_name */
BTA_DM_API_DI_DISCOVER, /* 17 bta_dm_di_disc */
BTA_DM_CLOSE_GATT_CONN, /* 18 bta_dm_close_gatt_conn */
BTA_DM_SEARCH_NUM_ACTIONS /* 19 */
};
/* action function list */
const tBTA_DM_ACTION bta_dm_search_action[] = {
bta_dm_search_start, /* 0 BTA_DM_API_SEARCH */
bta_dm_search_cancel, /* 1 BTA_DM_API_SEARCH_CANCEL */
bta_dm_discover, /* 2 BTA_DM_API_DISCOVER */
bta_dm_inq_cmpl, /* 3 BTA_DM_INQUIRY_CMPL */
bta_dm_rmt_name, /* 4 BTA_DM_REMT_NAME */
bta_dm_sdp_result, /* 5 BTA_DM_SDP_RESULT */
bta_dm_search_cmpl, /* 6 BTA_DM_SEARCH_CMPL */
bta_dm_free_sdp_db, /* 7 BTA_DM_FREE_SDP_DB */
bta_dm_disc_result, /* 8 BTA_DM_DISC_RESULT */
bta_dm_search_result, /* 9 BTA_DM_SEARCH_RESULT */
bta_dm_queue_search, /* 10 BTA_DM_QUEUE_SEARCH */
bta_dm_queue_disc, /* 11 BTA_DM_QUEUE_DISC */
bta_dm_search_clear_queue, /* 12 BTA_DM_SEARCH_CLEAR_QUEUE */
bta_dm_search_cancel_cmpl, /* 13 BTA_DM_SEARCH_CANCEL_CMPL */
bta_dm_search_cancel_notify, /* 14 BTA_DM_SEARCH_CANCEL_NOTIFY */
bta_dm_search_cancel_transac_cmpl, /* 15 BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL
*/
bta_dm_disc_rmt_name, /* 16 BTA_DM_DISC_RMT_NAME */
bta_dm_di_disc, /* 17 BTA_DM_API_DI_DISCOVER */
bta_dm_close_gatt_conn};
#define BTA_DM_SEARCH_IGNORE BTA_DM_SEARCH_NUM_ACTIONS
/* state table information */
#define BTA_DM_SEARCH_ACTIONS 2 /* number of actions */
#define BTA_DM_SEARCH_NEXT_STATE 2 /* position of next state */
#define BTA_DM_SEARCH_NUM_COLS 3 /* number of columns in state tables */
/* state table for listen state */
const uint8_t bta_dm_search_idle_st_table[][BTA_DM_SEARCH_NUM_COLS] = {
/* Event Action 1
Action 2 Next State */
/* API_SEARCH */ {BTA_DM_API_SEARCH, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_ACTIVE},
/* API_SEARCH_CANCEL */ {BTA_DM_SEARCH_CANCEL_NOTIFY, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_IDLE},
/* API_SEARCH_DISC */ {BTA_DM_API_DISCOVER, BTA_DM_SEARCH_IGNORE,
BTA_DM_DISCOVER_ACTIVE},
/* INQUIRY_CMPL */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_IDLE},
/* REMT_NAME_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_IDLE},
/* SDP_RESULT_EVT */ {BTA_DM_FREE_SDP_DB, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_IDLE},
/* SEARCH_CMPL_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_IDLE},
/* DISCV_RES_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_IDLE},
/* API_DI_DISCOVER_EVT */ {BTA_DM_API_DI_DISCOVER, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_ACTIVE},
/* DISC_CLOSE_TOUT_EVT */
{BTA_DM_CLOSE_GATT_CONN, BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IDLE}};
const uint8_t bta_dm_search_search_active_st_table[][BTA_DM_SEARCH_NUM_COLS] = {
/* Event Action 1
Action 2 Next State */
/* API_SEARCH */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_ACTIVE},
/* API_SEARCH_CANCEL */ {BTA_DM_API_SEARCH_CANCEL, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_CANCELLING},
/* API_SEARCH_DISC */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_ACTIVE},
/* INQUIRY_CMPL */ {BTA_DM_INQUIRY_CMPL, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_ACTIVE},
/* REMT_NAME_EVT */ {BTA_DM_REMT_NAME, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_ACTIVE},
/* SDP_RESULT_EVT */ {BTA_DM_SDP_RESULT, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_ACTIVE},
/* SEARCH_CMPL_EVT */ {BTA_DM_SEARCH_CMPL, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_IDLE},
/* DISCV_RES_EVT */ {BTA_DM_SEARCH_RESULT, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_ACTIVE},
/* API_DI_DISCOVER_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_ACTIVE},
/* DISC_CLOSE_TOUT_EVT */
{BTA_DM_CLOSE_GATT_CONN, BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_ACTIVE}
};
const uint8_t
bta_dm_search_search_cancelling_st_table[][BTA_DM_SEARCH_NUM_COLS] = {
/* Event Action 1
Action 2 Next State */
/* API_SEARCH */ {BTA_DM_QUEUE_SEARCH, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_CANCELLING},
/* API_SEARCH_CANCEL */ {BTA_DM_SEARCH_CLEAR_QUEUE,
BTA_DM_SEARCH_CANCEL_NOTIFY,
BTA_DM_SEARCH_CANCELLING},
/* API_SEARCH_DISC */ {BTA_DM_QUEUE_DISC, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_CANCELLING},
/* INQUIRY_CMPL */ {BTA_DM_SEARCH_CANCEL_CMPL, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_IDLE},
/* REMT_NAME_EVT */ {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL,
BTA_DM_SEARCH_CANCEL_CMPL, BTA_DM_SEARCH_IDLE},
/* SDP_RESULT_EVT */ {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL,
BTA_DM_SEARCH_CANCEL_CMPL, BTA_DM_SEARCH_IDLE},
/* SEARCH_CMPL_EVT */ {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL,
BTA_DM_SEARCH_CANCEL_CMPL, BTA_DM_SEARCH_IDLE},
/* DISCV_RES_EVT */ {BTA_DM_SEARCH_CANCEL_TRANSAC_CMPL,
BTA_DM_SEARCH_CANCEL_CMPL, BTA_DM_SEARCH_IDLE},
/* API_DI_DISCOVER_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_CANCELLING},
/* DISC_CLOSE_TOUT_EVT */
{BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_CANCELLING}};
const uint8_t bta_dm_search_disc_active_st_table[][BTA_DM_SEARCH_NUM_COLS] = {
/* Event Action 1
Action 2 Next State */
/* API_SEARCH */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_DISCOVER_ACTIVE},
/* API_SEARCH_CANCEL */ {BTA_DM_SEARCH_CANCEL_NOTIFY, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_CANCELLING},
/* API_SEARCH_DISC */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_DISCOVER_ACTIVE},
/* INQUIRY_CMPL */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_DISCOVER_ACTIVE},
/* REMT_NAME_EVT */ {BTA_DM_DISC_RMT_NAME, BTA_DM_SEARCH_IGNORE,
BTA_DM_DISCOVER_ACTIVE},
/* SDP_RESULT_EVT */ {BTA_DM_SDP_RESULT, BTA_DM_SEARCH_IGNORE,
BTA_DM_DISCOVER_ACTIVE},
/* SEARCH_CMPL_EVT */ {BTA_DM_SEARCH_CMPL, BTA_DM_SEARCH_IGNORE,
BTA_DM_SEARCH_IDLE},
/* DISCV_RES_EVT */ {BTA_DM_DISC_RESULT, BTA_DM_SEARCH_IGNORE,
BTA_DM_DISCOVER_ACTIVE},
/* API_DI_DISCOVER_EVT */ {BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE,
BTA_DM_DISCOVER_ACTIVE},
/* DISC_CLOSE_TOUT_EVT */
{BTA_DM_SEARCH_IGNORE, BTA_DM_SEARCH_IGNORE, BTA_DM_DISCOVER_ACTIVE}};
typedef const uint8_t (*tBTA_DM_ST_TBL)[BTA_DM_SEARCH_NUM_COLS];
/* state table */
const tBTA_DM_ST_TBL bta_dm_search_st_tbl[] = {
bta_dm_search_idle_st_table, bta_dm_search_search_active_st_table,
bta_dm_search_search_cancelling_st_table,
bta_dm_search_disc_active_st_table};
/*******************************************************************************
*
* Function bta_dm_sm_search_disable
*
* Description unregister BTA SEARCH DM
*
*
* Returns void
*
******************************************************************************/
void bta_dm_search_sm_disable() { bta_sys_deregister(BTA_ID_DM_SEARCH); }
/*******************************************************************************
*
* Function bta_dm_search_sm_execute
*
* Description State machine event handling function for DM
*
*
* Returns void
*
******************************************************************************/
bool bta_dm_search_sm_execute(BT_HDR* p_msg) {
tBTA_DM_ST_TBL state_table;
uint8_t action;
int i;
APPL_TRACE_EVENT("bta_dm_search_sm_execute state:%d, event:0x%x",
bta_dm_search_cb.state, p_msg->event);
/* look up the state table for the current state */
state_table = bta_dm_search_st_tbl[bta_dm_search_cb.state];
bta_dm_search_cb.state =
state_table[p_msg->event & 0x00ff][BTA_DM_SEARCH_NEXT_STATE];
/* execute action functions */
for (i = 0; i < BTA_DM_SEARCH_ACTIONS; i++) {
action = state_table[p_msg->event & 0x00ff][i];
if (action != BTA_DM_SEARCH_IGNORE) {
(*bta_dm_search_action[action])((tBTA_DM_MSG*)p_msg);
} else {
break;
}
}
return true;
}