636 lines
22 KiB
C++
636 lines
22 KiB
C++
/******************************************************************************
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*
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* Copyright (C) 2003-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This is the main implementation file for the BTA system manager.
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*
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******************************************************************************/
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#define LOG_TAG "bt_bta_sys_main"
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#include <base/bind.h>
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#include <base/logging.h>
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#include <base/threading/thread.h>
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#include <pthread.h>
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#include <string.h>
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#include "bt_common.h"
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#include "bta_api.h"
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#include "bta_sys.h"
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#include "bta_sys_int.h"
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#include "btm_api.h"
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#include "btu.h"
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#include "osi/include/alarm.h"
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#include "osi/include/fixed_queue.h"
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#include "osi/include/log.h"
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#include "osi/include/osi.h"
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#include "osi/include/thread.h"
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#include "utl.h"
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#if (defined BTA_AR_INCLUDED) && (BTA_AR_INCLUDED == true)
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#include "bta_ar_api.h"
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#endif
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/* system manager control block definition */
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tBTA_SYS_CB bta_sys_cb;
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extern thread_t* bt_workqueue_thread;
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/* trace level */
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/* TODO Hard-coded trace levels - Needs to be configurable */
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uint8_t appl_trace_level = BT_TRACE_LEVEL_WARNING; // APPL_INITIAL_TRACE_LEVEL;
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uint8_t btif_trace_level = BT_TRACE_LEVEL_WARNING;
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static const tBTA_SYS_REG bta_sys_hw_reg = {bta_sys_sm_execute, NULL};
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/* type for action functions */
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typedef void (*tBTA_SYS_ACTION)(tBTA_SYS_HW_MSG* p_data);
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/* action function list */
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const tBTA_SYS_ACTION bta_sys_action[] = {
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/* device manager local device API events - cf bta_sys.h for events */
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bta_sys_hw_api_enable, /* 0 BTA_SYS_HW_API_ENABLE_EVT */
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bta_sys_hw_evt_enabled, /* 1 BTA_SYS_HW_EVT_ENABLED_EVT */
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bta_sys_hw_evt_stack_enabled, /* 2 BTA_SYS_HW_EVT_STACK_ENABLED_EVT */
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bta_sys_hw_api_disable, /* 3 BTA_SYS_HW_API_DISABLE_EVT */
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bta_sys_hw_evt_disabled, /* 4 BTA_SYS_HW_EVT_DISABLED_EVT */
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bta_sys_hw_error /* 5 BTA_SYS_HW_ERROR_EVT */
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};
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/* state machine action enumeration list */
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enum {
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/* device manager local device API events */
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BTA_SYS_HW_API_ENABLE,
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BTA_SYS_HW_EVT_ENABLED,
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BTA_SYS_HW_EVT_STACK_ENABLED,
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BTA_SYS_HW_API_DISABLE,
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BTA_SYS_HW_EVT_DISABLED,
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BTA_SYS_HW_ERROR
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};
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#define BTA_SYS_NUM_ACTIONS (BTA_SYS_MAX_EVT & 0x00ff)
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#define BTA_SYS_IGNORE BTA_SYS_NUM_ACTIONS
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/* state table information */
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#define BTA_SYS_ACTIONS 2 /* number of actions */
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#define BTA_SYS_NEXT_STATE 2 /* position of next state */
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#define BTA_SYS_NUM_COLS 3 /* number of columns in state tables */
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/* state table for OFF state */
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const uint8_t bta_sys_hw_off[][BTA_SYS_NUM_COLS] = {
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/* Event Action 1 Action 2
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Next State */
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/* API_ENABLE */ {BTA_SYS_HW_API_ENABLE, BTA_SYS_IGNORE,
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BTA_SYS_HW_STARTING},
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/* EVT_ENABLED */ {BTA_SYS_IGNORE, BTA_SYS_IGNORE, BTA_SYS_HW_STARTING},
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/* STACK_ENABLED */ {BTA_SYS_IGNORE, BTA_SYS_IGNORE, BTA_SYS_HW_ON},
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/* API_DISABLE */ {BTA_SYS_HW_EVT_DISABLED, BTA_SYS_IGNORE,
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BTA_SYS_HW_OFF},
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/* EVT_DISABLED */ {BTA_SYS_IGNORE, BTA_SYS_IGNORE, BTA_SYS_HW_OFF},
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/* EVT_ERROR */ {BTA_SYS_IGNORE, BTA_SYS_IGNORE, BTA_SYS_HW_OFF}};
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const uint8_t bta_sys_hw_starting[][BTA_SYS_NUM_COLS] = {
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/* Event Action 1 Action 2
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Next State */
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/* API_ENABLE */ {BTA_SYS_IGNORE, BTA_SYS_IGNORE,
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BTA_SYS_HW_STARTING}, /* wait for completion event */
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/* EVT_ENABLED */ {BTA_SYS_HW_EVT_ENABLED, BTA_SYS_IGNORE,
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BTA_SYS_HW_STARTING},
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/* STACK_ENABLED */ {BTA_SYS_HW_EVT_STACK_ENABLED, BTA_SYS_IGNORE,
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BTA_SYS_HW_ON},
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/* API_DISABLE */ {BTA_SYS_IGNORE, BTA_SYS_IGNORE,
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BTA_SYS_HW_STOPPING}, /* successive disable/enable:
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change state wait for
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completion to disable */
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/* EVT_DISABLED */ {BTA_SYS_HW_EVT_DISABLED, BTA_SYS_HW_API_ENABLE,
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BTA_SYS_HW_STARTING}, /* successive enable/disable:
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notify, then restart HW */
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/* EVT_ERROR */ {BTA_SYS_HW_ERROR, BTA_SYS_IGNORE, BTA_SYS_HW_ON}};
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const uint8_t bta_sys_hw_on[][BTA_SYS_NUM_COLS] = {
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/* Event Action 1 Action 2
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Next State */
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/* API_ENABLE */ {BTA_SYS_HW_API_ENABLE, BTA_SYS_IGNORE, BTA_SYS_HW_ON},
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/* EVT_ENABLED */ {BTA_SYS_IGNORE, BTA_SYS_IGNORE, BTA_SYS_HW_ON},
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/* STACK_ENABLED */ {BTA_SYS_IGNORE, BTA_SYS_IGNORE, BTA_SYS_HW_ON},
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/* API_DISABLE */
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{BTA_SYS_HW_API_DISABLE, BTA_SYS_IGNORE,
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BTA_SYS_HW_ON}, /* don't change the state here, as some
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other modules might be active */
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/* EVT_DISABLED */ {BTA_SYS_HW_ERROR, BTA_SYS_IGNORE, BTA_SYS_HW_ON},
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/* EVT_ERROR */ {BTA_SYS_HW_ERROR, BTA_SYS_IGNORE, BTA_SYS_HW_ON}};
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const uint8_t bta_sys_hw_stopping[][BTA_SYS_NUM_COLS] = {
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/* Event Action 1 Action 2
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Next State */
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/* API_ENABLE */ {BTA_SYS_IGNORE, BTA_SYS_IGNORE,
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BTA_SYS_HW_STARTING}, /* change state, and wait for
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completion event to enable */
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/* EVT_ENABLED */ {BTA_SYS_HW_EVT_ENABLED, BTA_SYS_IGNORE,
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BTA_SYS_HW_STOPPING}, /* successive enable/disable:
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finish the enable before
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disabling */
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/* STACK_ENABLED */ {BTA_SYS_HW_EVT_STACK_ENABLED, BTA_SYS_HW_API_DISABLE,
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BTA_SYS_HW_STOPPING}, /* successive enable/disable:
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notify, then stop */
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/* API_DISABLE */ {BTA_SYS_IGNORE, BTA_SYS_IGNORE,
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BTA_SYS_HW_STOPPING}, /* wait for completion event */
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/* EVT_DISABLED */ {BTA_SYS_HW_EVT_DISABLED, BTA_SYS_IGNORE,
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BTA_SYS_HW_OFF},
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/* EVT_ERROR */ {BTA_SYS_HW_API_DISABLE, BTA_SYS_IGNORE,
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BTA_SYS_HW_STOPPING}};
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typedef const uint8_t (*tBTA_SYS_ST_TBL)[BTA_SYS_NUM_COLS];
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/* state table */
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const tBTA_SYS_ST_TBL bta_sys_st_tbl[] = {bta_sys_hw_off, bta_sys_hw_starting,
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bta_sys_hw_on, bta_sys_hw_stopping};
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/*******************************************************************************
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*
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* Function bta_sys_init
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*
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* Description BTA initialization; called from task initialization.
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_sys_init(void) {
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memset(&bta_sys_cb, 0, sizeof(tBTA_SYS_CB));
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appl_trace_level = APPL_INITIAL_TRACE_LEVEL;
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/* register BTA SYS message handler */
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bta_sys_register(BTA_ID_SYS, &bta_sys_hw_reg);
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/* register for BTM notifications */
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BTM_RegisterForDeviceStatusNotif((tBTM_DEV_STATUS_CB*)&bta_sys_hw_btm_cback);
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#if (defined BTA_AR_INCLUDED) && (BTA_AR_INCLUDED == true)
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bta_ar_init();
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#endif
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}
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void bta_sys_free(void) {
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}
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/*******************************************************************************
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*
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* Function bta_dm_sm_execute
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*
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* Description State machine event handling function for DM
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*
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*
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* Returns void
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*
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******************************************************************************/
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bool bta_sys_sm_execute(BT_HDR* p_msg) {
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bool freebuf = true;
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tBTA_SYS_ST_TBL state_table;
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uint8_t action;
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int i;
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APPL_TRACE_EVENT("bta_sys_sm_execute state:%d, event:0x%x", bta_sys_cb.state,
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p_msg->event);
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/* look up the state table for the current state */
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state_table = bta_sys_st_tbl[bta_sys_cb.state];
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/* update state */
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bta_sys_cb.state = state_table[p_msg->event & 0x00ff][BTA_SYS_NEXT_STATE];
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/* execute action functions */
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for (i = 0; i < BTA_SYS_ACTIONS; i++) {
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action = state_table[p_msg->event & 0x00ff][i];
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if (action != BTA_SYS_IGNORE) {
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(*bta_sys_action[action])((tBTA_SYS_HW_MSG*)p_msg);
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} else {
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break;
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}
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}
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return freebuf;
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}
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void bta_sys_hw_register(tBTA_SYS_HW_MODULE module, tBTA_SYS_HW_CBACK* cback) {
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bta_sys_cb.sys_hw_cback[module] = cback;
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}
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void bta_sys_hw_unregister(tBTA_SYS_HW_MODULE module) {
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bta_sys_cb.sys_hw_cback[module] = NULL;
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}
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/*******************************************************************************
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*
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* Function bta_sys_hw_btm_cback
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*
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* Description This function is registered by BTA SYS to BTM in order to get
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* status notifications
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*
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*
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* Returns
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*
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******************************************************************************/
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void bta_sys_hw_btm_cback(tBTM_DEV_STATUS status) {
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tBTA_SYS_HW_MSG* sys_event =
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(tBTA_SYS_HW_MSG*)osi_malloc(sizeof(tBTA_SYS_HW_MSG));
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APPL_TRACE_DEBUG("%s was called with parameter: %i", __func__, status);
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/* send a message to BTA SYS */
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if (status == BTM_DEV_STATUS_UP) {
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sys_event->hdr.event = BTA_SYS_EVT_STACK_ENABLED_EVT;
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} else if (status == BTM_DEV_STATUS_DOWN) {
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sys_event->hdr.event = BTA_SYS_ERROR_EVT;
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} else {
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/* BTM_DEV_STATUS_CMD_TOUT is ignored for now. */
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osi_free_and_reset((void**)&sys_event);
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}
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if (sys_event) bta_sys_sendmsg(sys_event);
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}
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/*******************************************************************************
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*
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* Function bta_sys_hw_error
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*
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* Description In case the HW device stops answering... Try to turn it off,
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* then re-enable all
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* previously active SW modules.
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*
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* Returns success or failure
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*
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******************************************************************************/
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void bta_sys_hw_error(UNUSED_ATTR tBTA_SYS_HW_MSG* p_sys_hw_msg) {
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uint8_t module_index;
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APPL_TRACE_DEBUG("%s", __func__);
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for (module_index = 0; module_index < BTA_SYS_MAX_HW_MODULES;
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module_index++) {
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if (bta_sys_cb.sys_hw_module_active & ((uint32_t)1 << module_index)) {
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switch (module_index) {
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case BTA_SYS_HW_BLUETOOTH:
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/* Send BTA_SYS_HW_ERROR_EVT to DM */
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if (bta_sys_cb.sys_hw_cback[module_index] != NULL)
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bta_sys_cb.sys_hw_cback[module_index](BTA_SYS_HW_ERROR_EVT);
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break;
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default:
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/* not yet supported */
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break;
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}
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}
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}
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}
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/*******************************************************************************
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*
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* Function bta_sys_hw_enable
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*
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* Description this function is called after API enable and HW has been
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* turned on
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*
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*
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* Returns success or failure
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*
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******************************************************************************/
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void bta_sys_hw_api_enable(tBTA_SYS_HW_MSG* p_sys_hw_msg) {
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if ((!bta_sys_cb.sys_hw_module_active) &&
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(bta_sys_cb.state != BTA_SYS_HW_ON)) {
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/* register which HW module was turned on */
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bta_sys_cb.sys_hw_module_active |= ((uint32_t)1 << p_sys_hw_msg->hw_module);
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tBTA_SYS_HW_MSG* p_msg =
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(tBTA_SYS_HW_MSG*)osi_malloc(sizeof(tBTA_SYS_HW_MSG));
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p_msg->hdr.event = BTA_SYS_EVT_ENABLED_EVT;
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p_msg->hw_module = p_sys_hw_msg->hw_module;
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bta_sys_sendmsg(p_msg);
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} else {
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/* register which HW module was turned on */
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bta_sys_cb.sys_hw_module_active |= ((uint32_t)1 << p_sys_hw_msg->hw_module);
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/* HW already in use, so directly notify the caller */
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if (bta_sys_cb.sys_hw_cback[p_sys_hw_msg->hw_module] != NULL)
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bta_sys_cb.sys_hw_cback[p_sys_hw_msg->hw_module](BTA_SYS_HW_ON_EVT);
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}
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APPL_TRACE_EVENT("bta_sys_hw_api_enable for %d, active modules 0x%04X",
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p_sys_hw_msg->hw_module, bta_sys_cb.sys_hw_module_active);
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}
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/*******************************************************************************
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*
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* Function bta_sys_hw_disable
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*
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* Description if no other module is using the HW, this function will call
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* (if defined) a user-macro to turn off the HW
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*
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*
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* Returns success or failure
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*
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******************************************************************************/
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void bta_sys_hw_api_disable(tBTA_SYS_HW_MSG* p_sys_hw_msg) {
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APPL_TRACE_DEBUG("bta_sys_hw_api_disable for %d, active modules: 0x%04X",
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p_sys_hw_msg->hw_module, bta_sys_cb.sys_hw_module_active);
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/* make sure the related SW blocks were stopped */
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bta_sys_disable(p_sys_hw_msg->hw_module);
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/* register which module we turn off */
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bta_sys_cb.sys_hw_module_active &= ~((uint32_t)1 << p_sys_hw_msg->hw_module);
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/* if there are still some SW modules using the HW, just provide an answer to
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* the calling */
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if (bta_sys_cb.sys_hw_module_active != 0) {
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/* if there are still some SW modules using the HW, directly notify the
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* caller */
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if (bta_sys_cb.sys_hw_cback[p_sys_hw_msg->hw_module] != NULL)
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bta_sys_cb.sys_hw_cback[p_sys_hw_msg->hw_module](BTA_SYS_HW_OFF_EVT);
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} else {
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/* manually update the state of our system */
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bta_sys_cb.state = BTA_SYS_HW_STOPPING;
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tBTA_SYS_HW_MSG* p_msg =
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(tBTA_SYS_HW_MSG*)osi_malloc(sizeof(tBTA_SYS_HW_MSG));
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p_msg->hdr.event = BTA_SYS_EVT_DISABLED_EVT;
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p_msg->hw_module = p_sys_hw_msg->hw_module;
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bta_sys_sendmsg(p_msg);
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}
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}
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/*******************************************************************************
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*
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* Function bta_sys_hw_event_enabled
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*
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* Description
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*
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*
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* Returns success or failure
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*
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******************************************************************************/
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void bta_sys_hw_evt_enabled(tBTA_SYS_HW_MSG* p_sys_hw_msg) {
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APPL_TRACE_EVENT("bta_sys_hw_evt_enabled for %i", p_sys_hw_msg->hw_module);
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BTM_DeviceReset(NULL);
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}
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/*******************************************************************************
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*
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* Function bta_sys_hw_event_disabled
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*
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* Description
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*
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*
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* Returns success or failure
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*
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******************************************************************************/
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void bta_sys_hw_evt_disabled(tBTA_SYS_HW_MSG* p_sys_hw_msg) {
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uint8_t hw_module_index;
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APPL_TRACE_DEBUG("bta_sys_hw_evt_disabled - module 0x%X",
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p_sys_hw_msg->hw_module);
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for (hw_module_index = 0; hw_module_index < BTA_SYS_MAX_HW_MODULES;
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hw_module_index++) {
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if (bta_sys_cb.sys_hw_cback[hw_module_index] != NULL)
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bta_sys_cb.sys_hw_cback[hw_module_index](BTA_SYS_HW_OFF_EVT);
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}
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}
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/*******************************************************************************
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*
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* Function bta_sys_hw_event_stack_enabled
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*
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* Description we receive this event once the SW side is ready (stack, FW
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* download,... ), i.e. we can really start using the device. So
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* notify the app.
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*
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* Returns success or failure
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*
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******************************************************************************/
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void bta_sys_hw_evt_stack_enabled(UNUSED_ATTR tBTA_SYS_HW_MSG* p_sys_hw_msg) {
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uint8_t hw_module_index;
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APPL_TRACE_DEBUG(" bta_sys_hw_evt_stack_enabled!notify the callers");
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for (hw_module_index = 0; hw_module_index < BTA_SYS_MAX_HW_MODULES;
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hw_module_index++) {
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if (bta_sys_cb.sys_hw_cback[hw_module_index] != NULL)
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bta_sys_cb.sys_hw_cback[hw_module_index](BTA_SYS_HW_ON_EVT);
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}
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}
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/*******************************************************************************
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*
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* Function bta_sys_event
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*
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* Description BTA event handler; called from task event handler.
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_sys_event(BT_HDR* p_msg) {
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uint8_t id;
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bool freebuf = true;
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APPL_TRACE_EVENT("%s: Event 0x%x", __func__, p_msg->event);
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/* get subsystem id from event */
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id = (uint8_t)(p_msg->event >> 8);
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/* verify id and call subsystem event handler */
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if ((id < BTA_ID_MAX) && (bta_sys_cb.reg[id] != NULL)) {
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freebuf = (*bta_sys_cb.reg[id]->evt_hdlr)(p_msg);
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} else {
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APPL_TRACE_WARNING("%s: Received unregistered event id %d", __func__, id);
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}
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|
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if (freebuf) {
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osi_free(p_msg);
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}
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}
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|
|
|
/*******************************************************************************
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|
*
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* Function bta_sys_register
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|
*
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* Description Called by other BTA subsystems to register their event
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|
* handler.
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*
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|
*
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* Returns void
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|
*
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|
******************************************************************************/
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void bta_sys_register(uint8_t id, const tBTA_SYS_REG* p_reg) {
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bta_sys_cb.reg[id] = (tBTA_SYS_REG*)p_reg;
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bta_sys_cb.is_reg[id] = true;
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}
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|
|
|
/*******************************************************************************
|
|
*
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|
* Function bta_sys_deregister
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|
*
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|
* Description Called by other BTA subsystems to de-register
|
|
* handler.
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|
*
|
|
*
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|
* Returns void
|
|
*
|
|
******************************************************************************/
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|
void bta_sys_deregister(uint8_t id) { bta_sys_cb.is_reg[id] = false; }
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_sys_is_register
|
|
*
|
|
* Description Called by other BTA subsystems to get registeration
|
|
* status.
|
|
*
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
bool bta_sys_is_register(uint8_t id) { return bta_sys_cb.is_reg[id]; }
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_sys_sendmsg
|
|
*
|
|
* Description Send a GKI message to BTA. This function is designed to
|
|
* optimize sending of messages to BTA. It is called by BTA
|
|
* API functions and call-in functions.
|
|
*
|
|
* TODO (apanicke): Add location object as parameter for easier
|
|
* future debugging when doing alarm refactor
|
|
*
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void bta_sys_sendmsg(void* p_msg) {
|
|
base::MessageLoop* bta_message_loop = get_message_loop();
|
|
|
|
if (!bta_message_loop || !bta_message_loop->task_runner().get()) {
|
|
APPL_TRACE_ERROR("%s: MessageLooper not initialized", __func__);
|
|
return;
|
|
}
|
|
|
|
bta_message_loop->task_runner()->PostTask(
|
|
FROM_HERE, base::Bind(&bta_sys_event, static_cast<BT_HDR*>(p_msg)));
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function do_in_bta_thread
|
|
*
|
|
* Description Post a closure to be ran in the bta thread
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void do_in_bta_thread(const tracked_objects::Location& from_here,
|
|
const base::Closure& task) {
|
|
base::MessageLoop* bta_message_loop = get_message_loop();
|
|
|
|
if (!bta_message_loop || !bta_message_loop->task_runner().get()) {
|
|
APPL_TRACE_ERROR("%s: MessageLooper not initialized", __func__);
|
|
return;
|
|
}
|
|
|
|
bta_message_loop->task_runner()->PostTask(from_here, task);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_sys_start_timer
|
|
*
|
|
* Description Start a protocol timer for the specified amount
|
|
* of time in milliseconds.
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void bta_sys_start_timer(alarm_t* alarm, period_ms_t interval, uint16_t event,
|
|
uint16_t layer_specific) {
|
|
BT_HDR* p_buf = (BT_HDR*)osi_malloc(sizeof(BT_HDR));
|
|
|
|
p_buf->event = event;
|
|
p_buf->layer_specific = layer_specific;
|
|
|
|
alarm_set_on_mloop(alarm, interval, bta_sys_sendmsg, p_buf);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_sys_disable
|
|
*
|
|
* Description For each registered subsystem execute its disable function.
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void bta_sys_disable(tBTA_SYS_HW_MODULE module) {
|
|
int bta_id = 0;
|
|
int bta_id_max = 0;
|
|
|
|
APPL_TRACE_DEBUG("bta_sys_disable: module %i", module);
|
|
|
|
switch (module) {
|
|
case BTA_SYS_HW_BLUETOOTH:
|
|
bta_id = BTA_ID_DM;
|
|
bta_id_max = BTA_ID_BLUETOOTH_MAX;
|
|
break;
|
|
default:
|
|
APPL_TRACE_WARNING("bta_sys_disable: unkown module");
|
|
return;
|
|
}
|
|
|
|
for (; bta_id <= bta_id_max; bta_id++) {
|
|
if (bta_sys_cb.reg[bta_id] != NULL) {
|
|
if (bta_sys_cb.is_reg[bta_id] == true &&
|
|
bta_sys_cb.reg[bta_id]->disable != NULL) {
|
|
(*bta_sys_cb.reg[bta_id]->disable)();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_sys_set_trace_level
|
|
*
|
|
* Description Set trace level for BTA
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void bta_sys_set_trace_level(uint8_t level) { appl_trace_level = level; }
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_sys_get_sys_features
|
|
*
|
|
* Description Returns sys_features to other BTA modules.
|
|
*
|
|
* Returns sys_features
|
|
*
|
|
******************************************************************************/
|
|
uint16_t bta_sys_get_sys_features(void) { return bta_sys_cb.sys_features; }
|