966 lines
32 KiB
C
966 lines
32 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2000-2012 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 file contains functions that manages ACL link modes.
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* This includes operations such as active, hold,
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* park and sniff modes.
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*
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* This module contains both internal and external (API)
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* functions. External (API) functions are distinguishable
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* by their names beginning with uppercase BTM.
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*
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*****************************************************************************/
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//#define LOG_TAG "bt_btm_pm"
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#include <stdlib.h>
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#include <string.h>
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//#include <stdio.h>
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#include <stddef.h>
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#include "stack/bt_types.h"
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#include "stack/hcimsgs.h"
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#include "stack/btu.h"
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#include "stack/btm_api.h"
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#include "btm_int.h"
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#include "l2c_int.h"
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#include "stack/hcidefs.h"
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//#include "bt_utils.h"
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//#include "osi/include/log.h"
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/*****************************************************************************/
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/* to handle different modes */
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/*****************************************************************************/
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#define BTM_PM_STORED_MASK 0x80 /* set this mask if the command is stored */
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#define BTM_PM_NUM_SET_MODES 3 /* only hold, sniff & park */
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/* Usage: (ptr_features[ offset ] & mask )?TRUE:FALSE */
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/* offset to supported feature */
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const UINT8 btm_pm_mode_off[BTM_PM_NUM_SET_MODES] = {0, 0, 1};
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/* mask to supported feature */
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const UINT8 btm_pm_mode_msk[BTM_PM_NUM_SET_MODES] = {0x40, 0x80, 0x01};
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#define BTM_PM_GET_MD1 1
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#define BTM_PM_GET_MD2 2
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#define BTM_PM_GET_COMP 3
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const UINT8 btm_pm_md_comp_matrix[BTM_PM_NUM_SET_MODES * BTM_PM_NUM_SET_MODES] = {
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BTM_PM_GET_COMP,
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BTM_PM_GET_MD2,
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BTM_PM_GET_MD2,
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BTM_PM_GET_MD1,
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BTM_PM_GET_COMP,
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BTM_PM_GET_MD1,
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BTM_PM_GET_MD1,
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BTM_PM_GET_MD2,
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BTM_PM_GET_COMP
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};
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/* function prototype */
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static int btm_pm_find_acl_ind(BD_ADDR remote_bda);
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static tBTM_STATUS btm_pm_snd_md_req( UINT8 pm_id, int link_ind, tBTM_PM_PWR_MD *p_mode );
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#if (!CONFIG_BT_STACK_NO_LOG)
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static const char *mode_to_string(tBTM_PM_MODE mode);
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#endif
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/*
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#ifdef BTM_PM_DEBUG
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#undef BTM_PM_DEBUG
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#define BTM_PM_DEBUG TRUE
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#endif
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*/
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#if BTM_PM_DEBUG == TRUE
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const char *btm_pm_state_str[] = {
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"pm_active_state",
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"pm_hold_state",
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"pm_sniff_state",
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"pm_park_state",
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"pm_pend_state"
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};
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const char *btm_pm_event_str[] = {
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"pm_set_mode_event",
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"pm_hci_sts_event",
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"pm_mod_chg_event",
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"pm_update_event"
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};
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const char *btm_pm_action_str[] = {
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"pm_set_mode_action",
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"pm_update_db_action",
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"pm_mod_chg_action",
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"pm_hci_sts_action",
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"pm_update_action"
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};
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#endif // BTM_PM_DEBUG
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/*****************************************************************************/
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/* P U B L I C F U N C T I O N S */
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/*****************************************************************************/
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/*******************************************************************************
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**
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** Function BTM_PmRegister
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**
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** Description register or deregister with power manager
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**
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** Returns BTM_SUCCESS if successful,
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** BTM_NO_RESOURCES if no room to hold registration
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** BTM_ILLEGAL_VALUE
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**
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*******************************************************************************/
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tBTM_STATUS BTM_PmRegister (UINT8 mask, UINT8 *p_pm_id, tBTM_PM_STATUS_CBACK *p_cb)
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{
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int xx;
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/* de-register */
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if (mask & BTM_PM_DEREG) {
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if (*p_pm_id >= BTM_MAX_PM_RECORDS) {
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return BTM_ILLEGAL_VALUE;
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}
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btm_cb.pm_reg_db[*p_pm_id].mask = BTM_PM_REC_NOT_USED;
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return BTM_SUCCESS;
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}
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for (xx = 0; xx < BTM_MAX_PM_RECORDS; xx++) {
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/* find an unused entry */
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if (btm_cb.pm_reg_db[xx].mask == BTM_PM_REC_NOT_USED) {
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/* if register for notification, should provide callback routine */
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if (mask & BTM_PM_REG_NOTIF) {
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if (p_cb == NULL) {
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return BTM_ILLEGAL_VALUE;
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}
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btm_cb.pm_reg_db[xx].cback = p_cb;
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}
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btm_cb.pm_reg_db[xx].mask = mask;
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*p_pm_id = xx;
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return BTM_SUCCESS;
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}
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}
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return BTM_NO_RESOURCES;
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}
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/*******************************************************************************
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**
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** Function BTM_SetPowerMode
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**
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** Description store the mode in control block or
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** alter ACL connection behavior.
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**
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** Returns BTM_SUCCESS if successful,
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** BTM_UNKNOWN_ADDR if bd addr is not active or bad
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**
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*******************************************************************************/
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tBTM_STATUS BTM_SetPowerMode (UINT8 pm_id, BD_ADDR remote_bda, tBTM_PM_PWR_MD *p_mode)
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{
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UINT8 *p_features;
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int ind, acl_ind;
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tBTM_PM_MCB *p_cb = NULL; /* per ACL link */
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tBTM_PM_MODE mode;
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int temp_pm_id;
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if (pm_id >= BTM_MAX_PM_RECORDS) {
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pm_id = BTM_PM_SET_ONLY_ID;
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}
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if (p_mode == NULL) {
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return BTM_ILLEGAL_VALUE;
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}
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BTM_TRACE_API( "BTM_SetPowerMode: pm_id %d BDA: %08x mode:0x%x", pm_id,
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(remote_bda[2] << 24) + (remote_bda[3] << 16) + (remote_bda[4] << 8) + remote_bda[5], p_mode->mode);
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/* take out the force bit */
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mode = p_mode->mode & ~BTM_PM_MD_FORCE;
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acl_ind = btm_pm_find_acl_ind(remote_bda);
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if (acl_ind == MAX_L2CAP_LINKS) {
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return (BTM_UNKNOWN_ADDR);
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}
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p_cb = &(btm_cb.pm_mode_db[acl_ind]);
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if (mode != BTM_PM_MD_ACTIVE) {
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/* check if the requested mode is supported */
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ind = mode - BTM_PM_MD_HOLD; /* make it base 0 */
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p_features = BTM_ReadLocalFeatures();
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if ( !(p_features[ btm_pm_mode_off[ind] ] & btm_pm_mode_msk[ind] ) ) {
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return BTM_MODE_UNSUPPORTED;
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}
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}
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if (mode == p_cb->state) { /* the requested mode is current mode */
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/* already in the requested mode and the current interval has less latency than the max */
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if ( (mode == BTM_PM_MD_ACTIVE) ||
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((p_mode->mode & BTM_PM_MD_FORCE) && (p_mode->max >= p_cb->interval) && (p_mode->min <= p_cb->interval)) ||
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((p_mode->mode & BTM_PM_MD_FORCE) == 0 && (p_mode->max >= p_cb->interval)) ) {
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BTM_TRACE_DEBUG( "BTM_SetPowerMode: mode:0x%x interval %d max:%d, min:%d", p_mode->mode, p_cb->interval, p_mode->max, p_mode->min);
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return BTM_SUCCESS;
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}
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}
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temp_pm_id = pm_id;
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if (pm_id == BTM_PM_SET_ONLY_ID) {
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temp_pm_id = BTM_MAX_PM_RECORDS;
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}
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/* update mode database */
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if ( ((pm_id != BTM_PM_SET_ONLY_ID) &&
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(btm_cb.pm_reg_db[pm_id].mask & BTM_PM_REG_SET))
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|| ((pm_id == BTM_PM_SET_ONLY_ID) && (btm_cb.pm_pend_link != MAX_L2CAP_LINKS)) ) {
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#if BTM_PM_DEBUG == TRUE
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BTM_TRACE_DEBUG( "BTM_SetPowerMode: Saving cmd acl_ind %d temp_pm_id %d", acl_ind, temp_pm_id);
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#endif // BTM_PM_DEBUG
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/* Make sure mask is set to BTM_PM_REG_SET */
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btm_cb.pm_reg_db[temp_pm_id].mask |= BTM_PM_REG_SET;
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*(&p_cb->req_mode[temp_pm_id]) = *((tBTM_PM_PWR_MD *)p_mode);
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p_cb->chg_ind = TRUE;
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}
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#if BTM_PM_DEBUG == TRUE
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BTM_TRACE_DEBUG( "btm_pm state:0x%x, pm_pend_link: %d", p_cb->state, btm_cb.pm_pend_link);
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#endif // BTM_PM_DEBUG
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/* if mode == hold or pending, return */
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if ( (p_cb->state == BTM_PM_STS_HOLD) ||
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(p_cb->state == BTM_PM_STS_PENDING) ||
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(btm_cb.pm_pend_link != MAX_L2CAP_LINKS) ) { /* command pending */
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if (acl_ind != btm_cb.pm_pend_link) {
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/* set the stored mask */
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p_cb->state |= BTM_PM_STORED_MASK;
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BTM_TRACE_DEBUG( "btm_pm state stored:%d", acl_ind);
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}
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return BTM_CMD_STORED;
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}
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return btm_pm_snd_md_req(pm_id, acl_ind, p_mode);
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}
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/*******************************************************************************
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**
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** Function BTM_ReadPowerMode
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**
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** Description This returns the current mode for a specific
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** ACL connection.
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**
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** Input Param remote_bda - device address of desired ACL connection
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**
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** Output Param p_mode - address where the current mode is copied into.
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** BTM_ACL_MODE_NORMAL
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** BTM_ACL_MODE_HOLD
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** BTM_ACL_MODE_SNIFF
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** BTM_ACL_MODE_PARK
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** (valid only if return code is BTM_SUCCESS)
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**
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** Returns BTM_SUCCESS if successful,
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** BTM_UNKNOWN_ADDR if bd addr is not active or bad
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**
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*******************************************************************************/
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tBTM_STATUS BTM_ReadPowerMode (BD_ADDR remote_bda, tBTM_PM_MODE *p_mode)
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{
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int acl_ind;
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if ( (acl_ind = btm_pm_find_acl_ind(remote_bda)) == MAX_L2CAP_LINKS) {
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return (BTM_UNKNOWN_ADDR);
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}
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*p_mode = btm_cb.pm_mode_db[acl_ind].state;
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return BTM_SUCCESS;
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}
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/*******************************************************************************
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**
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** Function BTM_SetSsrParams
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**
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** Description This sends the given SSR parameters for the given ACL
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** connection if it is in ACTIVE mode.
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**
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** Input Param remote_bda - device address of desired ACL connection
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** max_lat - maximum latency (in 0.625ms)(0-0xFFFE)
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** min_rmt_to - minimum remote timeout
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** min_loc_to - minimum local timeout
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**
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**
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** Returns BTM_SUCCESS if the HCI command is issued successful,
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** BTM_UNKNOWN_ADDR if bd addr is not active or bad
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** BTM_CMD_STORED if the command is stored
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**
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*******************************************************************************/
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tBTM_STATUS BTM_SetSsrParams (BD_ADDR remote_bda, UINT16 max_lat,
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UINT16 min_rmt_to, UINT16 min_loc_to)
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{
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#if (BTM_SSR_INCLUDED == TRUE)
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int acl_ind;
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tBTM_PM_MCB *p_cb;
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if ( (acl_ind = btm_pm_find_acl_ind(remote_bda)) == MAX_L2CAP_LINKS) {
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return (BTM_UNKNOWN_ADDR);
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}
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if (BTM_PM_STS_ACTIVE == btm_cb.pm_mode_db[acl_ind].state ||
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BTM_PM_STS_SNIFF == btm_cb.pm_mode_db[acl_ind].state) {
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if (btsnd_hcic_sniff_sub_rate(btm_cb.acl_db[acl_ind].hci_handle, max_lat,
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min_rmt_to, min_loc_to)) {
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return BTM_SUCCESS;
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} else {
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return BTM_NO_RESOURCES;
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}
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}
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p_cb = &btm_cb.pm_mode_db[acl_ind];
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p_cb->max_lat = max_lat;
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p_cb->min_rmt_to = min_rmt_to;
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p_cb->min_loc_to = min_loc_to;
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return BTM_CMD_STORED;
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#else
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return BTM_ILLEGAL_ACTION;
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#endif // BTM_SSR_INCLUDED
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}
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/*******************************************************************************
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**
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** Function btm_pm_reset
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**
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** Description as a part of the BTM reset process.
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**
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** Returns void
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**
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*******************************************************************************/
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void btm_pm_reset(void)
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{
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int xx;
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tBTM_PM_STATUS_CBACK *cb = NULL;
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/* clear the pending request for application */
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if ( (btm_cb.pm_pend_id != BTM_PM_SET_ONLY_ID) &&
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(btm_cb.pm_reg_db[btm_cb.pm_pend_id].mask & BTM_PM_REG_NOTIF) ) {
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cb = btm_cb.pm_reg_db[btm_cb.pm_pend_id].cback;
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}
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/* clear the register record */
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for (xx = 0; xx < BTM_MAX_PM_RECORDS; xx++) {
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btm_cb.pm_reg_db[xx].mask = BTM_PM_REC_NOT_USED;
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}
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if (cb != NULL && btm_cb.pm_pend_link < MAX_L2CAP_LINKS) {
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(*cb)(btm_cb.acl_db[btm_cb.pm_pend_link].remote_addr, BTM_PM_STS_ERROR, BTM_DEV_RESET, 0);
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}
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/* no command pending */
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btm_cb.pm_pend_link = MAX_L2CAP_LINKS;
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}
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/*******************************************************************************
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**
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** Function btm_pm_sm_alloc
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**
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** Description This function initializes the control block of an ACL link.
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** It is called when an ACL connection is created.
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**
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** Returns void
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**
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*******************************************************************************/
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void btm_pm_sm_alloc(UINT8 ind)
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{
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tBTM_PM_MCB *p_db = &btm_cb.pm_mode_db[ind]; /* per ACL link */
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memset (p_db, 0, sizeof(tBTM_PM_MCB));
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p_db->state = BTM_PM_ST_ACTIVE;
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#if BTM_PM_DEBUG == TRUE
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BTM_TRACE_DEBUG( "btm_pm_sm_alloc ind:%d st:%d", ind, p_db->state);
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#endif // BTM_PM_DEBUG
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}
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/*******************************************************************************
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**
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** Function btm_pm_find_acl_ind
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**
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** Description This function initializes the control block of an ACL link.
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** It is called when an ACL connection is created.
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**
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** Returns void
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**
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*******************************************************************************/
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static int btm_pm_find_acl_ind(BD_ADDR remote_bda)
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{
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tACL_CONN *p = &btm_cb.acl_db[0];
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UINT8 xx;
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for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p++) {
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if ((p->in_use) && (!memcmp (p->remote_addr, remote_bda, BD_ADDR_LEN))
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#if (BLE_INCLUDED == TRUE)
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&& p->transport == BT_TRANSPORT_BR_EDR
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#endif // BLE_INCLUDED
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) {
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#if BTM_PM_DEBUG == TRUE
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BTM_TRACE_DEBUG( "btm_pm_find_acl_ind ind:%d, st:%d", xx, btm_cb.pm_mode_db[xx].state);
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#endif // BTM_PM_DEBUG
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break;
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}
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}
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return xx;
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}
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/*******************************************************************************
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**
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** Function btm_pm_compare_modes
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** Description get the "more active" mode of the 2
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** Returns void
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**
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*******************************************************************************/
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static tBTM_PM_PWR_MD *btm_pm_compare_modes(tBTM_PM_PWR_MD *p_md1, tBTM_PM_PWR_MD *p_md2, tBTM_PM_PWR_MD *p_res)
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{
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UINT8 res;
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if (p_md1 == NULL) {
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*p_res = *p_md2;
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p_res->mode &= ~BTM_PM_MD_FORCE;
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return p_md2;
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}
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if (p_md2->mode == BTM_PM_MD_ACTIVE || p_md1->mode == BTM_PM_MD_ACTIVE) {
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return NULL;
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}
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/* check if force bit is involved */
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if (p_md1->mode & BTM_PM_MD_FORCE) {
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*p_res = *p_md1;
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p_res->mode &= ~BTM_PM_MD_FORCE;
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return p_res;
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}
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if (p_md2->mode & BTM_PM_MD_FORCE) {
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*p_res = *p_md2;
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p_res->mode &= ~BTM_PM_MD_FORCE;
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return p_res;
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}
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res = (p_md1->mode - 1) * BTM_PM_NUM_SET_MODES + (p_md2->mode - 1);
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res = btm_pm_md_comp_matrix[res];
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switch (res) {
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case BTM_PM_GET_MD1:
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*p_res = *p_md1;
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return p_md1;
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case BTM_PM_GET_MD2:
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*p_res = *p_md2;
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return p_md2;
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|
|
case BTM_PM_GET_COMP:
|
|
p_res->mode = p_md1->mode;
|
|
/* min of the two */
|
|
p_res->max = (p_md1->max < p_md2->max) ? (p_md1->max) : (p_md2->max);
|
|
/* max of the two */
|
|
p_res->min = (p_md1->min > p_md2->min) ? (p_md1->min) : (p_md2->min);
|
|
|
|
/* the intersection is NULL */
|
|
if ( p_res->max < p_res->min) {
|
|
return NULL;
|
|
}
|
|
|
|
if (p_res->mode == BTM_PM_MD_SNIFF) {
|
|
/* max of the two */
|
|
p_res->attempt = (p_md1->attempt > p_md2->attempt) ? (p_md1->attempt) : (p_md2->attempt);
|
|
p_res->timeout = (p_md1->timeout > p_md2->timeout) ? (p_md1->timeout) : (p_md2->timeout);
|
|
}
|
|
return p_res;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_pm_get_set_mode
|
|
** Description get the resulting mode from the registered parties, then compare it
|
|
** with the requested mode, if the command is from an unregistered party.
|
|
** Returns void
|
|
**
|
|
*******************************************************************************/
|
|
static tBTM_PM_MODE btm_pm_get_set_mode(UINT8 pm_id, tBTM_PM_MCB *p_cb, tBTM_PM_PWR_MD *p_mode, tBTM_PM_PWR_MD *p_res)
|
|
{
|
|
int xx, loop_max;
|
|
tBTM_PM_PWR_MD *p_md = NULL;
|
|
|
|
if (p_mode != NULL && p_mode->mode & BTM_PM_MD_FORCE) {
|
|
*p_res = *p_mode;
|
|
p_res->mode &= ~BTM_PM_MD_FORCE;
|
|
return p_res->mode;
|
|
}
|
|
|
|
if (!p_mode) {
|
|
loop_max = BTM_MAX_PM_RECORDS + 1;
|
|
} else {
|
|
loop_max = BTM_MAX_PM_RECORDS;
|
|
}
|
|
|
|
for ( xx = 0; xx < loop_max; xx++) {
|
|
/* g through all the registered "set" parties */
|
|
if (btm_cb.pm_reg_db[xx].mask & BTM_PM_REG_SET) {
|
|
if (p_cb->req_mode[xx].mode == BTM_PM_MD_ACTIVE) {
|
|
/* if at least one registered (SET) party says ACTIVE, stay active */
|
|
return BTM_PM_MD_ACTIVE;
|
|
} else {
|
|
/* if registered parties give conflicting information, stay active */
|
|
if ( (btm_pm_compare_modes(p_md, &p_cb->req_mode[xx], p_res)) == NULL) {
|
|
return BTM_PM_MD_ACTIVE;
|
|
}
|
|
p_md = p_res;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* if the resulting mode is NULL(nobody registers SET), use the requested mode */
|
|
if (p_md == NULL) {
|
|
if (p_mode) {
|
|
*p_res = *((tBTM_PM_PWR_MD *)p_mode);
|
|
} else { /* p_mode is NULL when btm_pm_snd_md_req is called from btm_pm_proc_mode_change */
|
|
return BTM_PM_MD_ACTIVE;
|
|
}
|
|
} else {
|
|
/* if the command is from unregistered party,
|
|
compare the resulting mode from registered party*/
|
|
if ( (pm_id == BTM_PM_SET_ONLY_ID) &&
|
|
((btm_pm_compare_modes(p_mode, p_md, p_res)) == NULL) ) {
|
|
return BTM_PM_MD_ACTIVE;
|
|
}
|
|
}
|
|
|
|
return p_res->mode;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_pm_snd_md_req
|
|
** Description get the resulting mode and send the resuest to host controller
|
|
** Returns tBTM_STATUS
|
|
**, BOOLEAN *p_chg_ind
|
|
*******************************************************************************/
|
|
static tBTM_STATUS btm_pm_snd_md_req(UINT8 pm_id, int link_ind, tBTM_PM_PWR_MD *p_mode)
|
|
{
|
|
tBTM_PM_PWR_MD md_res;
|
|
tBTM_PM_MODE mode;
|
|
tBTM_PM_MCB *p_cb = &btm_cb.pm_mode_db[link_ind];
|
|
BOOLEAN chg_ind = FALSE;
|
|
|
|
mode = btm_pm_get_set_mode(pm_id, p_cb, p_mode, &md_res);
|
|
md_res.mode = mode;
|
|
|
|
#if BTM_PM_DEBUG == TRUE
|
|
BTM_TRACE_DEBUG( "btm_pm_snd_md_req link_ind:%d, mode: %d",
|
|
link_ind, mode);
|
|
#endif // BTM_PM_DEBUG
|
|
|
|
if ( p_cb->state == mode) {
|
|
/* already in the resulting mode */
|
|
if ( (mode == BTM_PM_MD_ACTIVE) ||
|
|
((md_res.max >= p_cb->interval) && (md_res.min <= p_cb->interval)) ) {
|
|
return BTM_CMD_STORED;
|
|
}
|
|
/* Otherwise, needs to wake, then sleep */
|
|
chg_ind = TRUE;
|
|
}
|
|
p_cb->chg_ind = chg_ind;
|
|
|
|
/* cannot go directly from current mode to resulting mode. */
|
|
if ( mode != BTM_PM_MD_ACTIVE && p_cb->state != BTM_PM_MD_ACTIVE) {
|
|
p_cb->chg_ind = TRUE; /* needs to wake, then sleep */
|
|
}
|
|
|
|
if (p_cb->chg_ind == TRUE) { /* needs to wake first */
|
|
md_res.mode = BTM_PM_MD_ACTIVE;
|
|
}
|
|
#if (BTM_SSR_INCLUDED == TRUE)
|
|
else if (BTM_PM_MD_SNIFF == md_res.mode && p_cb->max_lat) {
|
|
btsnd_hcic_sniff_sub_rate(btm_cb.acl_db[link_ind].hci_handle, p_cb->max_lat,
|
|
p_cb->min_rmt_to, p_cb->min_loc_to);
|
|
p_cb->max_lat = 0;
|
|
}
|
|
#endif // BTM_SSR_INCLUDED
|
|
/* Default is failure */
|
|
btm_cb.pm_pend_link = MAX_L2CAP_LINKS;
|
|
|
|
/* send the appropriate HCI command */
|
|
btm_cb.pm_pend_id = pm_id;
|
|
|
|
#if BTM_PM_DEBUG == TRUE
|
|
BTM_TRACE_DEBUG("btm_pm_snd_md_req state:0x%x, link_ind: %d", p_cb->state, link_ind);
|
|
#endif // BTM_PM_DEBUG
|
|
|
|
BTM_TRACE_DEBUG("%s switching from %s to %s.", __func__, mode_to_string(p_cb->state), mode_to_string(md_res.mode));
|
|
switch (md_res.mode) {
|
|
case BTM_PM_MD_ACTIVE:
|
|
switch (p_cb->state) {
|
|
case BTM_PM_MD_SNIFF:
|
|
if (btsnd_hcic_exit_sniff_mode(btm_cb.acl_db[link_ind].hci_handle)) {
|
|
btm_cb.pm_pend_link = link_ind;
|
|
}
|
|
break;
|
|
case BTM_PM_MD_PARK:
|
|
if (btsnd_hcic_exit_park_mode(btm_cb.acl_db[link_ind].hci_handle)) {
|
|
btm_cb.pm_pend_link = link_ind;
|
|
}
|
|
break;
|
|
default:
|
|
/* Failure btm_cb.pm_pend_link = MAX_L2CAP_LINKS */
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case BTM_PM_MD_HOLD:
|
|
if (btsnd_hcic_hold_mode (btm_cb.acl_db[link_ind].hci_handle,
|
|
md_res.max, md_res.min)) {
|
|
btm_cb.pm_pend_link = link_ind;
|
|
}
|
|
break;
|
|
|
|
case BTM_PM_MD_SNIFF:
|
|
if (btsnd_hcic_sniff_mode (btm_cb.acl_db[link_ind].hci_handle,
|
|
md_res.max, md_res.min, md_res.attempt,
|
|
md_res.timeout)) {
|
|
btm_cb.pm_pend_link = link_ind;
|
|
}
|
|
break;
|
|
|
|
case BTM_PM_MD_PARK:
|
|
if (btsnd_hcic_park_mode (btm_cb.acl_db[link_ind].hci_handle,
|
|
md_res.max, md_res.min)) {
|
|
btm_cb.pm_pend_link = link_ind;
|
|
}
|
|
break;
|
|
default:
|
|
/* Failure btm_cb.pm_pend_link = MAX_L2CAP_LINKS */
|
|
break;
|
|
}
|
|
|
|
if (btm_cb.pm_pend_link == MAX_L2CAP_LINKS) {
|
|
/* the command was not sent */
|
|
#if BTM_PM_DEBUG == TRUE
|
|
BTM_TRACE_DEBUG( "pm_pend_link: %d", btm_cb.pm_pend_link);
|
|
#endif // BTM_PM_DEBUG
|
|
return (BTM_NO_RESOURCES);
|
|
}
|
|
|
|
return BTM_CMD_STARTED;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_pm_check_stored
|
|
**
|
|
** Description This function is called when an HCI command status event occurs
|
|
** to check if there's any PM command issued while waiting for
|
|
** HCI command status.
|
|
**
|
|
** Returns none.
|
|
**
|
|
*******************************************************************************/
|
|
static void btm_pm_check_stored(void)
|
|
{
|
|
int xx;
|
|
for (xx = 0; xx < MAX_L2CAP_LINKS; xx++) {
|
|
if (btm_cb.pm_mode_db[xx].state & BTM_PM_STORED_MASK) {
|
|
btm_cb.pm_mode_db[xx].state &= ~BTM_PM_STORED_MASK;
|
|
BTM_TRACE_DEBUG( "btm_pm_check_stored :%d", xx);
|
|
btm_pm_snd_md_req(BTM_PM_SET_ONLY_ID, xx, NULL);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_pm_proc_cmd_status
|
|
**
|
|
** Description This function is called when an HCI command status event occurs
|
|
** for power manager related commands.
|
|
**
|
|
** Input Parms status - status of the event (HCI_SUCCESS if no errors)
|
|
**
|
|
** Returns none.
|
|
**
|
|
*******************************************************************************/
|
|
void btm_pm_proc_cmd_status(UINT8 status)
|
|
{
|
|
tBTM_PM_MCB *p_cb;
|
|
tBTM_PM_STATUS pm_status;
|
|
|
|
if (btm_cb.pm_pend_link >= MAX_L2CAP_LINKS) {
|
|
return;
|
|
}
|
|
|
|
p_cb = &btm_cb.pm_mode_db[btm_cb.pm_pend_link];
|
|
|
|
if (status == HCI_SUCCESS) {
|
|
p_cb->state = BTM_PM_ST_PENDING;
|
|
pm_status = BTM_PM_STS_PENDING;
|
|
#if BTM_PM_DEBUG == TRUE
|
|
BTM_TRACE_DEBUG( "btm_pm_proc_cmd_status new state:0x%x", p_cb->state);
|
|
#endif // BTM_PM_DEBUG
|
|
} else { /* the command was not successfull. Stay in the same state */
|
|
pm_status = BTM_PM_STS_ERROR;
|
|
}
|
|
|
|
/* notify the caller is appropriate */
|
|
if ( (btm_cb.pm_pend_id != BTM_PM_SET_ONLY_ID) &&
|
|
(btm_cb.pm_reg_db[btm_cb.pm_pend_id].mask & BTM_PM_REG_NOTIF) ) {
|
|
(*btm_cb.pm_reg_db[btm_cb.pm_pend_id].cback)(btm_cb.acl_db[btm_cb.pm_pend_link].remote_addr, pm_status, 0, status);
|
|
}
|
|
|
|
/* no pending cmd now */
|
|
#if BTM_PM_DEBUG == TRUE
|
|
BTM_TRACE_DEBUG( "btm_pm_proc_cmd_status state:0x%x, pm_pend_link: %d(new: %d)",
|
|
p_cb->state, btm_cb.pm_pend_link, MAX_L2CAP_LINKS);
|
|
#endif // BTM_PM_DEBUG
|
|
btm_cb.pm_pend_link = MAX_L2CAP_LINKS;
|
|
|
|
btm_pm_check_stored();
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_process_mode_change
|
|
**
|
|
** Description This function is called when an HCI mode change event occurs.
|
|
**
|
|
** Input Parms hci_status - status of the event (HCI_SUCCESS if no errors)
|
|
** hci_handle - connection handle associated with the change
|
|
** mode - HCI_MODE_ACTIVE, HCI_MODE_HOLD, HCI_MODE_SNIFF, or HCI_MODE_PARK
|
|
** interval - number of baseband slots (meaning depends on mode)
|
|
**
|
|
** Returns none.
|
|
**
|
|
*******************************************************************************/
|
|
void btm_pm_proc_mode_change (UINT8 hci_status, UINT16 hci_handle, UINT8 mode, UINT16 interval)
|
|
{
|
|
tACL_CONN *p;
|
|
tBTM_PM_MCB *p_cb = NULL;
|
|
int xx, yy, zz;
|
|
tBTM_PM_STATE old_state;
|
|
tL2C_LCB *p_lcb;
|
|
|
|
/* get the index to acl_db */
|
|
if ((xx = btm_handle_to_acl_index(hci_handle)) >= MAX_L2CAP_LINKS) {
|
|
return;
|
|
}
|
|
|
|
p = &btm_cb.acl_db[xx];
|
|
|
|
/* update control block */
|
|
p_cb = &(btm_cb.pm_mode_db[xx]);
|
|
old_state = p_cb->state;
|
|
p_cb->state = mode;
|
|
p_cb->interval = interval;
|
|
|
|
BTM_TRACE_DEBUG("%s switched from %s to %s.", __func__, mode_to_string(old_state), mode_to_string(p_cb->state));
|
|
|
|
if ((p_lcb = l2cu_find_lcb_by_bd_addr(p->remote_addr, BT_TRANSPORT_BR_EDR)) != NULL) {
|
|
if ((p_cb->state == BTM_PM_ST_ACTIVE) || (p_cb->state == BTM_PM_ST_SNIFF)) {
|
|
/* There might be any pending packets due to SNIFF or PENDING state */
|
|
/* Trigger L2C to start transmission of the pending packets. */
|
|
BTM_TRACE_DEBUG("btm mode change to active; check l2c_link for outgoing packets");
|
|
l2c_link_check_send_pkts(p_lcb, NULL, NULL);
|
|
}
|
|
}
|
|
|
|
/* notify registered parties */
|
|
for (yy = 0; yy <= BTM_MAX_PM_RECORDS; yy++) {
|
|
/* set req_mode HOLD mode->ACTIVE */
|
|
if ( (mode == BTM_PM_MD_ACTIVE) && (p_cb->req_mode[yy].mode == BTM_PM_MD_HOLD) ) {
|
|
p_cb->req_mode[yy].mode = BTM_PM_MD_ACTIVE;
|
|
}
|
|
}
|
|
|
|
/* new request has been made. - post a message to BTU task */
|
|
if (old_state & BTM_PM_STORED_MASK) {
|
|
#if BTM_PM_DEBUG == TRUE
|
|
BTM_TRACE_DEBUG( "btm_pm_proc_mode_change: Sending stored req:%d", xx);
|
|
#endif // BTM_PM_DEBUG
|
|
btm_pm_snd_md_req(BTM_PM_SET_ONLY_ID, xx, NULL);
|
|
} else {
|
|
for (zz = 0; zz < MAX_L2CAP_LINKS; zz++) {
|
|
if (btm_cb.pm_mode_db[zz].chg_ind == TRUE) {
|
|
#if BTM_PM_DEBUG == TRUE
|
|
BTM_TRACE_DEBUG( "btm_pm_proc_mode_change: Sending PM req :%d", zz);
|
|
#endif // BTM_PM_DEBUG
|
|
btm_pm_snd_md_req(BTM_PM_SET_ONLY_ID, zz, NULL);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* notify registered parties */
|
|
for (yy = 0; yy < BTM_MAX_PM_RECORDS; yy++) {
|
|
if (btm_cb.pm_reg_db[yy].mask & BTM_PM_REG_NOTIF) {
|
|
(*btm_cb.pm_reg_db[yy].cback)( p->remote_addr, mode, interval, hci_status);
|
|
}
|
|
}
|
|
|
|
/* If mode change was because of an active role switch or change link key */
|
|
btm_cont_rswitch(p, btm_find_dev(p->remote_addr), hci_status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_pm_proc_ssr_evt
|
|
**
|
|
** Description This function is called when an HCI sniff subrating event occurs.
|
|
**
|
|
** Returns none.
|
|
**
|
|
*******************************************************************************/
|
|
#if (BTM_SSR_INCLUDED == TRUE)
|
|
void btm_pm_proc_ssr_evt (UINT8 *p, UINT16 evt_len)
|
|
{
|
|
UINT8 status;
|
|
UINT16 handle;
|
|
UINT16 max_rx_lat;
|
|
int xx, yy;
|
|
tBTM_PM_MCB *p_cb;
|
|
tACL_CONN *p_acl = NULL;
|
|
UINT16 use_ssr = TRUE;
|
|
UNUSED(evt_len);
|
|
|
|
STREAM_TO_UINT8 (status, p);
|
|
|
|
STREAM_TO_UINT16 (handle, p);
|
|
/* get the index to acl_db */
|
|
if ((xx = btm_handle_to_acl_index(handle)) >= MAX_L2CAP_LINKS) {
|
|
return;
|
|
}
|
|
|
|
p += 2;
|
|
STREAM_TO_UINT16 (max_rx_lat, p);
|
|
p_cb = &(btm_cb.pm_mode_db[xx]);
|
|
|
|
p_acl = &btm_cb.acl_db[xx];
|
|
if (p_cb->interval == max_rx_lat) {
|
|
/* using legacy sniff */
|
|
use_ssr = FALSE;
|
|
}
|
|
|
|
/* notify registered parties */
|
|
for (yy = 0; yy < BTM_MAX_PM_RECORDS; yy++) {
|
|
if (btm_cb.pm_reg_db[yy].mask & BTM_PM_REG_NOTIF) {
|
|
if ( p_acl) {
|
|
(*btm_cb.pm_reg_db[yy].cback)( p_acl->remote_addr, BTM_PM_STS_SSR, use_ssr, status);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif // BTM_SSR_INCLUDED
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_pm_device_in_active_or_sniff_mode
|
|
**
|
|
** Description This function is called to check if in active or sniff mode
|
|
**
|
|
** Returns TRUE, if in active or sniff mode
|
|
**
|
|
*******************************************************************************/
|
|
BOOLEAN btm_pm_device_in_active_or_sniff_mode(void)
|
|
{
|
|
/* The active state is the highest state-includes connected device and sniff mode*/
|
|
|
|
/* Covers active and sniff modes */
|
|
if (BTM_GetNumAclLinks() > 0) {
|
|
BTM_TRACE_DEBUG("%s - ACL links: %d", __func__, BTM_GetNumAclLinks());
|
|
return TRUE;
|
|
}
|
|
|
|
#if ((defined BLE_INCLUDED) && (BLE_INCLUDED == TRUE))
|
|
/* Check BLE states */
|
|
if (btm_ble_get_conn_st() != BLE_CONN_IDLE) {
|
|
BTM_TRACE_DEBUG("%s - BLE state: %x", __func__, btm_ble_get_conn_st());
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function btm_pm_device_in_scan_state
|
|
**
|
|
** Description This function is called to check if in paging, inquiry or connecting mode
|
|
**
|
|
** Returns TRUE, if in paging, inquiry or connecting mode
|
|
**
|
|
*******************************************************************************/
|
|
BOOLEAN btm_pm_device_in_scan_state(void)
|
|
{
|
|
/* Scan state-paging, inquiry, and trying to connect */
|
|
|
|
/* Check for paging */
|
|
if (btm_cb.is_paging || (!fixed_queue_is_empty(btm_cb.page_queue)) ||
|
|
BTM_BL_PAGING_STARTED == btm_cb.busy_level) {
|
|
BTM_TRACE_DEBUG("btm_pm_device_in_scan_state- paging");
|
|
return TRUE;
|
|
}
|
|
|
|
/* Check for inquiry */
|
|
if ((btm_cb.btm_inq_vars.inq_active & (BTM_BR_INQ_ACTIVE_MASK | BTM_BLE_INQ_ACTIVE_MASK)) != 0) {
|
|
BTM_TRACE_DEBUG("btm_pm_device_in_scan_state- Inq active");
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*******************************************************************************
|
|
**
|
|
** Function BTM_PM_ReadControllerState
|
|
**
|
|
** Description This function is called to obtain the controller state
|
|
**
|
|
** Returns Controller State-BTM_CONTRL_ACTIVE, BTM_CONTRL_SCAN, and BTM_CONTRL_IDLE
|
|
**
|
|
*******************************************************************************/
|
|
tBTM_CONTRL_STATE BTM_PM_ReadControllerState(void)
|
|
{
|
|
if (TRUE == btm_pm_device_in_active_or_sniff_mode()) {
|
|
return BTM_CONTRL_ACTIVE;
|
|
} else if (TRUE == btm_pm_device_in_scan_state()) {
|
|
return BTM_CONTRL_SCAN;
|
|
} else {
|
|
return BTM_CONTRL_IDLE;
|
|
}
|
|
}
|
|
|
|
#if (!CONFIG_BT_STACK_NO_LOG)
|
|
static const char *mode_to_string(tBTM_PM_MODE mode)
|
|
{
|
|
switch (mode) {
|
|
case BTM_PM_MD_ACTIVE: return "ACTIVE";
|
|
case BTM_PM_MD_SNIFF: return "SNIFF";
|
|
case BTM_PM_MD_PARK: return "PARK";
|
|
case BTM_PM_MD_HOLD: return "HOLD";
|
|
default: return "UNKNOWN";
|
|
}
|
|
}
|
|
#endif
|