/******************************************************************************
*
* Copyright (C) 2000-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/*****************************************************************************
*
* This file contains functions that manages ACL link modes.
* This includes operations such as active, hold,
* park and sniff modes.
*
* This module contains both internal and external (API)
* functions. External (API) functions are distinguishable
* by their names beginning with uppercase BTM.
*
*****************************************************************************/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stddef.h>
#include "bt_types.h"
#include "gki.h"
#include "hcimsgs.h"
#include "btu.h"
#include "btm_api.h"
#include "btm_int.h"
#include "l2c_int.h"
#include "hcidefs.h"
#if BTM_PWR_MGR_INCLUDED == TRUE
/* This compile option is only useful when the FW has a bug
* it automatically uses single slot when entering SNIFF mode, but does not restore the setting
* This issue was found when A2DP link goes into sniff and existing sniff still has choppy audio.
* If this issue is seen, look for FW solution first.
* This work around code will be removed later. */
#ifndef BTM_PM_SNIFF_SLOT_WORK_AROUND
#define BTM_PM_SNIFF_SLOT_WORK_AROUND FALSE
#endif
/*****************************************************************************/
/* to handle different modes */
/*****************************************************************************/
#define BTM_PM_STORED_MASK 0x80 /* set this mask if the command is stored */
#define BTM_PM_NUM_SET_MODES 3 /* only hold, sniff & park */
/* Usage: (ptr_features[ offset ] & mask )?TRUE:FALSE */
/* offset to supported feature */
const UINT8 btm_pm_mode_off[BTM_PM_NUM_SET_MODES] = {0, 0, 1};
/* mask to supported feature */
const UINT8 btm_pm_mode_msk[BTM_PM_NUM_SET_MODES] = {0x40, 0x80, 0x01};
#define BTM_PM_GET_MD1 1
#define BTM_PM_GET_MD2 2
#define BTM_PM_GET_COMP 3
const UINT8 btm_pm_md_comp_matrix[BTM_PM_NUM_SET_MODES*BTM_PM_NUM_SET_MODES] =
{
BTM_PM_GET_COMP,
BTM_PM_GET_MD2,
BTM_PM_GET_MD2,
BTM_PM_GET_MD1,
BTM_PM_GET_COMP,
BTM_PM_GET_MD1,
BTM_PM_GET_MD1,
BTM_PM_GET_MD2,
BTM_PM_GET_COMP
};
/* function prototype */
static int btm_pm_find_acl_ind(BD_ADDR remote_bda);
static tBTM_STATUS btm_pm_snd_md_req( UINT8 pm_id, int link_ind, tBTM_PM_PWR_MD *p_mode );
/*
#ifdef BTM_PM_DEBUG
#undef BTM_PM_DEBUG
#define BTM_PM_DEBUG TRUE
#endif
*/
#if BTM_PM_DEBUG == TRUE
const char * btm_pm_state_str[] =
{
"pm_active_state",
"pm_hold_state",
"pm_sniff_state",
"pm_park_state",
"pm_pend_state"
};
const char * btm_pm_event_str[] =
{
"pm_set_mode_event",
"pm_hci_sts_event",
"pm_mod_chg_event",
"pm_update_event"
};
const char * btm_pm_action_str[] =
{
"pm_set_mode_action",
"pm_update_db_action",
"pm_mod_chg_action",
"pm_hci_sts_action",
"pm_update_action"
};
#endif
/*****************************************************************************/
/* P U B L I C F U N C T I O N S */
/*****************************************************************************/
/*******************************************************************************
**
** Function BTM_PmRegister
**
** Description register or deregister with power manager
**
** Returns BTM_SUCCESS if successful,
** BTM_NO_RESOURCES if no room to hold registration
** BTM_ILLEGAL_VALUE
**
*******************************************************************************/
tBTM_STATUS BTM_PmRegister (UINT8 mask, UINT8 *p_pm_id, tBTM_PM_STATUS_CBACK *p_cb)
{
int xx;
/* de-register */
if(mask & BTM_PM_DEREG)
{
if(*p_pm_id >= BTM_MAX_PM_RECORDS)
return BTM_ILLEGAL_VALUE;
btm_cb.pm_reg_db[*p_pm_id].mask = BTM_PM_REC_NOT_USED;
return BTM_SUCCESS;
}
for(xx=0; xx<BTM_MAX_PM_RECORDS; xx++)
{
/* find an unused entry */
if(btm_cb.pm_reg_db[xx].mask == BTM_PM_REC_NOT_USED)
{
/* if register for notification, should provide callback routine */
if(mask & BTM_PM_REG_NOTIF)
{
if(p_cb == NULL)
return BTM_ILLEGAL_VALUE;
btm_cb.pm_reg_db[xx].cback = p_cb;
}
btm_cb.pm_reg_db[xx].mask = mask;
*p_pm_id = xx;
return BTM_SUCCESS;
}
}
return BTM_NO_RESOURCES;
}
/*******************************************************************************
**
** Function BTM_SetPowerMode
**
** Description store the mode in control block or
** alter ACL connection behavior.
**
** Returns BTM_SUCCESS if successful,
** BTM_UNKNOWN_ADDR if bd addr is not active or bad
**
*******************************************************************************/
tBTM_STATUS BTM_SetPowerMode (UINT8 pm_id, BD_ADDR remote_bda, tBTM_PM_PWR_MD *p_mode)
{
UINT8 *p_features;
int ind, acl_ind;
tBTM_PM_MCB *p_cb = NULL; /* per ACL link */
tBTM_PM_MODE mode;
int temp_pm_id;
if(pm_id >= BTM_MAX_PM_RECORDS)
pm_id = BTM_PM_SET_ONLY_ID;
if(p_mode == NULL)
return BTM_ILLEGAL_VALUE;
BTM_TRACE_API3( "BTM_SetPowerMode: pm_id %d BDA: %08x mode:0x%x", pm_id,
(remote_bda[2]<<24)+(remote_bda[3]<<16)+(remote_bda[4]<<8)+remote_bda[5], p_mode->mode);
/* take out the force bit */
mode = p_mode->mode & ~BTM_PM_MD_FORCE;
acl_ind = btm_pm_find_acl_ind(remote_bda);
if(acl_ind == MAX_L2CAP_LINKS)
return (BTM_UNKNOWN_ADDR);
p_cb = &(btm_cb.pm_mode_db[acl_ind]);
if(mode != BTM_PM_MD_ACTIVE)
{
/* check if the requested mode is supported */
ind = mode - BTM_PM_MD_HOLD; /* make it base 0 */
p_features = BTM_ReadLocalFeatures();
if( !(p_features[ btm_pm_mode_off[ind] ] & btm_pm_mode_msk[ind] ) )
return BTM_MODE_UNSUPPORTED;
}
if(mode == p_cb->state) /* the requested mode is current mode */
{
/* already in the requested mode and the current interval has less latency than the max */
if( (mode == BTM_PM_MD_ACTIVE) ||
((p_mode->mode & BTM_PM_MD_FORCE) && (p_mode->max >= p_cb->interval) && (p_mode->min <= p_cb->interval)) ||
((p_mode->mode & BTM_PM_MD_FORCE)==0 && (p_mode->max >= p_cb->interval)) )
{
BTM_TRACE_DEBUG4( "BTM_SetPowerMode: mode:0x%x interval %d max:%d, min:%d", p_mode->mode, p_cb->interval, p_mode->max, p_mode->min);
return BTM_SUCCESS;
}
}
temp_pm_id = pm_id;
if(pm_id == BTM_PM_SET_ONLY_ID)
temp_pm_id = BTM_MAX_PM_RECORDS;
/* update mode database */
if( ((pm_id != BTM_PM_SET_ONLY_ID) &&
(btm_cb.pm_reg_db[pm_id].mask & BTM_PM_REG_SET))
|| ((pm_id == BTM_PM_SET_ONLY_ID) && (btm_cb.pm_pend_link != MAX_L2CAP_LINKS)) )
{
#if BTM_PM_DEBUG == TRUE
BTM_TRACE_DEBUG2( "BTM_SetPowerMode: Saving cmd acl_ind %d temp_pm_id %d", acl_ind,temp_pm_id);
#endif
/* Make sure mask is set to BTM_PM_REG_SET */
btm_cb.pm_reg_db[temp_pm_id].mask |= BTM_PM_REG_SET;
*(&p_cb->req_mode[temp_pm_id]) = *((tBTM_PM_PWR_MD *)p_mode);
p_cb->chg_ind = TRUE;
}
#if BTM_PM_DEBUG == TRUE
BTM_TRACE_DEBUG2( "btm_pm state:0x%x, pm_pend_link: %d", p_cb->state, btm_cb.pm_pend_link);
#endif
/* if mode == hold or pending, return */
if( (p_cb->state == BTM_PM_STS_HOLD) ||
(p_cb->state == BTM_PM_STS_PENDING) ||
(btm_cb.pm_pend_link != MAX_L2CAP_LINKS) ) /* command pending */
{
if(acl_ind != btm_cb.pm_pend_link)
{
/* set the stored mask */
p_cb->state |= BTM_PM_STORED_MASK;
BTM_TRACE_DEBUG1( "btm_pm state stored:%d",acl_ind);
}
return BTM_CMD_STORED;
}
return btm_pm_snd_md_req(pm_id, acl_ind, p_mode);
}
/*******************************************************************************
**
** Function BTM_ReadPowerMode
**
** Description This returns the current mode for a specific
** ACL connection.
**
** Input Param remote_bda - device address of desired ACL connection
**
** Output Param p_mode - address where the current mode is copied into.
** BTM_ACL_MODE_NORMAL
** BTM_ACL_MODE_HOLD
** BTM_ACL_MODE_SNIFF
** BTM_ACL_MODE_PARK
** (valid only if return code is BTM_SUCCESS)
**
** Returns BTM_SUCCESS if successful,
** BTM_UNKNOWN_ADDR if bd addr is not active or bad
**
*******************************************************************************/
tBTM_STATUS BTM_ReadPowerMode (BD_ADDR remote_bda, tBTM_PM_MODE *p_mode)
{
int acl_ind;
if( (acl_ind = btm_pm_find_acl_ind(remote_bda)) == MAX_L2CAP_LINKS)
return (BTM_UNKNOWN_ADDR);
*p_mode = btm_cb.pm_mode_db[acl_ind].state;
return BTM_SUCCESS;
}
/*******************************************************************************
**
** Function BTM_SetSsrParams
**
** Description This sends the given SSR parameters for the given ACL
** connection if it is in ACTIVE mode.
**
** Input Param remote_bda - device address of desired ACL connection
** max_lat - maximum latency (in 0.625ms)(0-0xFFFE)
** min_rmt_to - minimum remote timeout
** min_loc_to - minimum local timeout
**
**
** Returns BTM_SUCCESS if the HCI command is issued successful,
** BTM_UNKNOWN_ADDR if bd addr is not active or bad
** BTM_CMD_STORED if the command is stored
**
*******************************************************************************/
tBTM_STATUS BTM_SetSsrParams (BD_ADDR remote_bda, UINT16 max_lat,
UINT16 min_rmt_to, UINT16 min_loc_to)
{
#if (BTM_SSR_INCLUDED == TRUE)
int acl_ind;
tBTM_PM_MCB *p_cb;
if( (acl_ind = btm_pm_find_acl_ind(remote_bda)) == MAX_L2CAP_LINKS)
return (BTM_UNKNOWN_ADDR);
if(BTM_PM_STS_ACTIVE == btm_cb.pm_mode_db[acl_ind].state ||
BTM_PM_STS_SNIFF == btm_cb.pm_mode_db[acl_ind].state)
{
if (btsnd_hcic_sniff_sub_rate(btm_cb.acl_db[acl_ind].hci_handle, max_lat,
min_rmt_to, min_loc_to))
return BTM_SUCCESS;
else
return BTM_NO_RESOURCES;
}
p_cb = &btm_cb.pm_mode_db[acl_ind];
p_cb->max_lat = max_lat;
p_cb->min_rmt_to = min_rmt_to;
p_cb->min_loc_to = min_loc_to;
return BTM_CMD_STORED;
#else
return BTM_ILLEGAL_ACTION;
#endif
}
/*******************************************************************************
**
** Function btm_pm_reset
**
** Description as a part of the BTM reset process.
**
** Returns void
**
*******************************************************************************/
void btm_pm_reset(void)
{
int xx;
tBTM_PM_STATUS_CBACK *cb = NULL;
/* clear the pending request for application */
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) )
{
cb = btm_cb.pm_reg_db[btm_cb.pm_pend_id].cback;
}
/* no command pending */
btm_cb.pm_pend_link = MAX_L2CAP_LINKS;
/* clear the register record */
for(xx=0; xx<BTM_MAX_PM_RECORDS; xx++)
{
btm_cb.pm_reg_db[xx].mask = BTM_PM_REC_NOT_USED;
}
if(cb != NULL)
(*cb)(btm_cb.acl_db[btm_cb.pm_pend_link].remote_addr, BTM_PM_STS_ERROR, BTM_DEV_RESET, 0);
}
/*******************************************************************************
**
** Function btm_pm_sm_alloc
**
** Description This function initializes the control block of an ACL link.
** It is called when an ACL connection is created.
**
** Returns void
**
*******************************************************************************/
void btm_pm_sm_alloc(UINT8 ind)
{
tBTM_PM_MCB *p_db = &btm_cb.pm_mode_db[ind]; /* per ACL link */
memset (p_db, 0, sizeof(tBTM_PM_MCB));
p_db->state = BTM_PM_ST_ACTIVE;
#if BTM_PM_DEBUG == TRUE
BTM_TRACE_DEBUG2( "btm_pm_sm_alloc ind:%d st:%d", ind, p_db->state);
#endif
}
/*******************************************************************************
**
** Function btm_pm_find_acl_ind
**
** Description This function initializes the control block of an ACL link.
** It is called when an ACL connection is created.
**
** Returns void
**
*******************************************************************************/
static int btm_pm_find_acl_ind(BD_ADDR remote_bda)
{
tACL_CONN *p = &btm_cb.acl_db[0];
UINT8 xx;
for (xx = 0; xx < MAX_L2CAP_LINKS; xx++, p++)
{
if ((p->in_use) && (!memcmp (p->remote_addr, remote_bda, BD_ADDR_LEN)))
{
#if BTM_PM_DEBUG == TRUE
BTM_TRACE_DEBUG2( "btm_pm_find_acl_ind ind:%d, st:%d", xx, btm_cb.pm_mode_db[xx].state);
#endif
break;
}
}
return xx;
}
/*******************************************************************************
**
** Function btm_pm_compare_modes
** Description get the "more active" mode of the 2
** Returns void
**
*******************************************************************************/
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)
{
UINT8 res;
if(p_md1 == NULL)
{
*p_res = *p_md2;
p_res->mode &= ~BTM_PM_MD_FORCE;
return p_md2;
}
if(p_md2->mode == BTM_PM_MD_ACTIVE || p_md1->mode == BTM_PM_MD_ACTIVE)
{
return NULL;
}
/* check if force bit is involved */
if(p_md1->mode & BTM_PM_MD_FORCE)
{
*p_res = *p_md1;
p_res->mode &= ~BTM_PM_MD_FORCE;
return p_res;
}
if(p_md2->mode & BTM_PM_MD_FORCE)
{
*p_res = *p_md2;
p_res->mode &= ~BTM_PM_MD_FORCE;
return p_res;
}
res = (p_md1->mode - 1) * BTM_PM_NUM_SET_MODES + (p_md2->mode - 1);
res = btm_pm_md_comp_matrix[res];
switch(res)
{
case BTM_PM_GET_MD1:
*p_res = *p_md1;
return p_md1;
case BTM_PM_GET_MD2:
*p_res = *p_md2;
return p_md2;
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_DEBUG2( "btm_pm_snd_md_req link_ind:%d, mode: %d",
link_ind, mode);
#endif
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
/* 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_DEBUG2("btm_pm_snd_md_req state:0x%x, link_ind: %d", p_cb->state, link_ind);
#endif
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_DEBUG1( "pm_pend_link: %d",btm_cb.pm_pend_link);
#endif
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_DEBUG1( "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_DEBUG1( "btm_pm_proc_cmd_status new state:0x%x", p_cb->state);
#endif
}
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_DEBUG3( "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_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];
/*** 2035 and 2045 work around: If mode is active and coming out of a SCO disconnect, restore packet types ***/
if (mode == HCI_MODE_ACTIVE)
{
if(BTM_GetNumScoLinks() == 0)
{
if(p->restore_pkt_types)
{
BTM_TRACE_DEBUG3("btm mode change AFTER unsniffing; hci hdl 0x%x, types 0x%02x/0x%02x",
hci_handle, p->pkt_types_mask, p->restore_pkt_types);
p->pkt_types_mask = p->restore_pkt_types;
p->restore_pkt_types = 0; /* Only exists while SCO is active */
btsnd_hcic_change_conn_type (p->hci_handle, p->pkt_types_mask);
}
#if (BTM_PM_SNIFF_SLOT_WORK_AROUND == TRUE)
else
{
BTM_TRACE_DEBUG2("btm mode change AFTER unsniffing; hci hdl 0x%x, types 0x%02x",
hci_handle, btm_cb.btm_acl_pkt_types_supported);
btm_set_packet_types (p, btm_cb.btm_acl_pkt_types_supported);
}
#endif
}
#if (BTM_PM_SNIFF_SLOT_WORK_AROUND == TRUE)
else
{
/* Mode changed from Sniff to Active while SCO is open. */
/* Packet types of active mode, not sniff mode, should be used for ACL when SCO is closed. */
p->restore_pkt_types = btm_cb.btm_acl_pkt_types_supported;
/* Exclude packet types not supported by the peer */
btm_acl_chk_peer_pkt_type_support (p, &p->restore_pkt_types);
}
#endif
}
#if (BTM_PM_SNIFF_SLOT_WORK_AROUND == TRUE)
else if (mode == HCI_MODE_SNIFF)
{
BTM_TRACE_DEBUG1("btm mode change to sniff; hci hdl 0x%x use single slot",
hci_handle);
btm_set_packet_types (p, (HCI_PKT_TYPES_MASK_DM1 | HCI_PKT_TYPES_MASK_DH1));
}
#endif
/* update control block */
p_cb = &(btm_cb.pm_mode_db[xx]);
old_state = p_cb->state;
p_cb->state = mode;
p_cb->interval = interval;
#if BTM_PM_DEBUG == TRUE
BTM_TRACE_DEBUG2( "btm_pm_proc_mode_change new state:0x%x (old:0x%x)", p_cb->state, old_state);
#endif
if ((p_cb->state == HCI_MODE_ACTIVE) &&
((p_lcb = l2cu_find_lcb_by_bd_addr (p->remote_addr)) != NULL))
{
/* There might be any pending packets due to SNIFF or PENDING state */
/* Trigger L2C to start transmission of the pending packets. */
BTM_TRACE_DEBUG0 ("btm mode change to active; check l2c_link for outgoing packets");
l2c_link_check_send_pkts (p_lcb, NULL, NULL);
//btu_stop_timer (&p_lcb->timer_entry);
}
/* 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_DEBUG1( "btm_pm_proc_mode_change: Sending stored req:%d", xx);
#endif
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_DEBUG1( "btm_pm_proc_mode_change: Sending PM req :%d", zz);
#endif
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_or_chglinkkey(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_tx_lat, max_rx_lat;
int xx, yy;
tBTM_PM_MCB *p_cb;
tACL_CONN *p_acl=NULL;
UINT16 use_ssr = TRUE;
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;
STREAM_TO_UINT16 (max_tx_lat, p);
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
#else /* BTM_PWR_MGR_INCLUDED == TRUE */
/*******************************************************************************
**
** Functions BTM_PmRegister, BTM_SetPowerMode, and BTM_ReadPowerMode
**
** Description Stubbed versions for BTM_PWR_MGR_INCLUDED = FALSE
**
** Returns BTM_MODE_UNSUPPORTED.
**
*******************************************************************************/
tBTM_STATUS BTM_PmRegister (UINT8 mask, UINT8 *p_pm_id, tBTM_PM_STATUS_CBACK *p_cb)
{
return BTM_MODE_UNSUPPORTED;
}
tBTM_STATUS BTM_SetPowerMode (UINT8 pm_id, BD_ADDR remote_bda, tBTM_PM_PWR_MD *p_mode)
{
return BTM_MODE_UNSUPPORTED;
}
tBTM_STATUS BTM_ReadPowerMode (BD_ADDR remote_bda, tBTM_PM_MODE *p_mode)
{
return BTM_MODE_UNSUPPORTED;
}
#endif
/*******************************************************************************
**
** Function BTM_IsPowerManagerOn
**
** Description This function is called to check if power manager is included.
** in the BTE version.
**
** Returns BTM_PWR_MGR_INCLUDED.
**
*******************************************************************************/
BOOLEAN BTM_IsPowerManagerOn (void)
{
return BTM_PWR_MGR_INCLUDED;
}