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/*****************************************************************************
**
** Name: obx_csm.c
**
** File: OBEX Client State Machine and Control Block Access Functions
**
** Copyright (c) 2003-2009, Broadcom Corp., All Rights Reserved.
** WIDCOMM Bluetooth Core. Proprietary and confidential.
**
*****************************************************************************/
#include <string.h>
#include "bt_target.h"
#include "btu.h" /* for timer */
#include "obx_int.h"
/* OBEX Client Action Functions Enums (must match obx_cl_action [below] */
enum
{
OBX_CA_SND_REQ,
OBX_CA_NOTIFY,
OBX_CA_CONNECT_ERROR,
OBX_CA_STATE,
OBX_CA_CLOSE_PORT,
OBX_CA_CONNECT_FAIL,
OBX_CA_DISCNT_REQ,
OBX_CA_START_TIMER,
OBX_CA_FAIL_RSP,
OBX_CA_SND_PART,
OBX_CA_CONNECT_OK,
OBX_CA_SESSION_OK,
OBX_CA_SESSION_CONT,
OBX_CA_SESSION_GET,
OBX_CA_SESSION_FAIL,
OBX_CA_ABORT,
OBX_CA_SND_PUT_REQ,
OBX_CA_SND_GET_REQ,
OBX_CA_SRM_SND_REQ,
OBX_CA_SRM_PUT_REQ,
OBX_CA_SRM_GET_REQ,
OBX_CA_SRM_PUT_NOTIFY,
OBX_CA_SRM_GET_NOTIFY,
OBX_CA_SAVE_RSP,
OBX_CA_SAVE_REQ
};
/* OBEX Client Action Functions */
static const tOBX_CL_ACT obx_cl_action[] =
{
obx_ca_snd_req,
obx_ca_notify,
obx_ca_connect_error,
obx_ca_state,
obx_ca_close_port,
obx_ca_connect_fail,
obx_ca_discnt_req,
obx_ca_start_timer,
obx_ca_fail_rsp,
obx_ca_snd_part,
obx_ca_connect_ok,
obx_ca_session_ok,
obx_ca_session_cont,
obx_ca_session_get,
obx_ca_session_fail,
obx_ca_abort,
obx_ca_snd_put_req,
obx_ca_snd_get_req,
obx_ca_srm_snd_req,
obx_ca_srm_put_req,
obx_ca_srm_get_req,
obx_ca_srm_put_notify,
obx_ca_srm_get_notify,
obx_ca_save_rsp,
obx_ca_save_req
};
/************ OBX Client FSM State/Event Indirection Table **************/
/* obx_csm_event() first looks at obx_csm_entry_map[][] to get an entry of the event of a particular state
* 0 means the event in the current state is ignored.
* a number with 0x80 bit set, use obx_cl_all_table[][] as the "state table".
* other numbers, look up obx_cl_main_state_table[] for the state table of current state.
*
* once the state table is determined,
* look up the "action" column to find the associated action function
* and the "next state" column to find the "next state" candidate.
*
* The actual next state could be either the state in the "next state" column
* or the state returned from the action function.
*/
static const UINT8 obx_csm_entry_map[][OBX_CS_MAX-1] =
{
/* state name: NtCon SesRs ConRs UnAut Conn DscRs OpUna StpRs ActRs AbtRs PutRs GetRs Put Get PutS GetS Part */
/* CONN_R */{ 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
/* SESS_R */{ 2, 0, 0, 0, 5, 0, 0, 0, 0, 0, 2, 2, 2, 2, 5, 5, 1 },
/* DISCNT_R */{ 0, 0x87, 2, 0x87, 0x81, 0x87, 0x87, 0x81, 0x81, 0x81, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87, 0x87 },
/* PUT_R */{ 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 2, 0, 0 },
/* GET_R */{ 0, 3, 0, 0, 2, 0, 2, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0 },
/* SETPATH_R*/{ 0, 0, 0, 0, 3, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
/* ACT_R */{ 0, 0, 0, 0, 6, 0, 5, 0, 0, 0, 0x82, 0x82, 0x82, 0x82, 3, 3, 1 },
/* ABORT_R */{ 0, 0, 0, 0, 4, 0, 4, 0, 0, 0, 0x82, 0x82, 0x82, 0x82, 3, 3, 1 },
/* OK_C */{ 0, 1, 3, 0, 0, 1, 0, 0x83, 0x83, 0x83, 0x83, 0x83, 0, 0, 0x83, 0x83, 3 },
/* CONT_C */{ 0, 2, 0, 0, 0, 2, 0, 0, 0, 1, 1, 1, 0, 0, 4, 4, 3 },
/* FAIL_C */{ 0, 4, 1, 0, 0, 0x87, 0, 0x86, 0x86, 2, 0x86, 0x86, 0, 0, 0x86, 0x86, 3 },
/* PORT_CLS */{ 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84, 0x84 },
/* TX_EMPTY */{ 0x87, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
/* FCS_SET */{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2 },
/* STATE */{ 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85, 0x85 },
/* TIMEOUT */{ 3, 2, 0x87, 0, 0, 0x87, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
};
static const UINT8 obx_cl_all_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* DISCNT_R */{OBX_CA_SND_REQ, OBX_CS_DISCNT_REQ_SENT },
/* ABORT_R */{OBX_CA_SND_REQ, OBX_CS_ABORT_REQ_SENT },
/* OK_C */{OBX_CA_NOTIFY, OBX_CS_NULL },
/* PORT_CLS */{OBX_CA_CONNECT_ERROR, OBX_CS_NOT_CONNECTED },
/* STATE */{OBX_CA_STATE, OBX_CS_NULL },
/* FAIL_C */{OBX_CA_FAIL_RSP, OBX_CS_NULL },
/* end */{OBX_CA_CLOSE_PORT, OBX_CS_NOT_CONNECTED }
};
static const UINT8 obx_cl_not_conn_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* CONN_R */{OBX_CA_SND_REQ, OBX_CS_CONNECT_REQ_SENT },
/* SESS_R */{OBX_CA_SND_REQ, OBX_CS_SESSION_REQ_SENT },
/* TIMEOUT */{OBX_CA_SESSION_FAIL, OBX_CS_NOT_CONNECTED }
};
static const UINT8 obx_cl_sess_rs_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* OK_C */{OBX_CA_SESSION_OK, OBX_CS_NOT_CONNECTED },
/* CONT_C */{OBX_CA_SESSION_CONT, OBX_CS_SESSION_REQ_SENT },
/* GET_R */{OBX_CA_SESSION_GET, OBX_CS_SESSION_REQ_SENT },
/* FAIL_C */{OBX_CA_SESSION_FAIL, OBX_CS_NOT_CONNECTED }
};
static const UINT8 obx_cl_conn_rs_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* FAIL_C */{OBX_CA_CONNECT_FAIL, OBX_CS_UNAUTH },
/* DISCNT_R */{OBX_CA_DISCNT_REQ, OBX_CS_NULL },
/* OK_C */{OBX_CA_CONNECT_OK, OBX_CS_NULL }
};
static const UINT8 obx_cl_unauth_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* CONN_R */{OBX_CA_SND_REQ, OBX_CS_CONNECT_REQ_SENT }
};
static const UINT8 obx_cl_conn_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* PUT_R */{OBX_CA_SND_PUT_REQ, OBX_CS_PUT_REQ_SENT },
/* GET_R */{OBX_CA_SND_GET_REQ, OBX_CS_GET_REQ_SENT },
/* SETPATH_R*/{OBX_CA_SND_REQ, OBX_CS_SETPATH_REQ_SENT },
/* ABORT_R */{OBX_CA_ABORT, OBX_CS_CONNECTED },
/* SESS_R */{OBX_CA_SND_REQ, OBX_CS_SESSION_REQ_SENT },
/* ACT_R */{OBX_CA_SND_REQ, OBX_CS_ACTION_REQ_SENT }
};
static const UINT8 obx_cl_discnt_rs_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* OK_C */{OBX_CA_NOTIFY, OBX_CS_NOT_CONNECTED }, /* and close port */
/* CONT_C */{OBX_CA_START_TIMER, OBX_CS_DISCNT_REQ_SENT }
};
static const UINT8 obx_cl_op_unauth_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* PUT_R */{OBX_CA_SND_REQ, OBX_CS_PUT_REQ_SENT },
/* GET_R */{OBX_CA_SND_REQ, OBX_CS_GET_REQ_SENT },
/* SETPATH_R*/{OBX_CA_SND_REQ, OBX_CS_SETPATH_REQ_SENT },
/* ABORT_R */{OBX_SM_NO_ACTION, OBX_CS_CONNECTED },
/* ACT_R */{OBX_CA_SND_REQ, OBX_CS_ACTION_REQ_SENT }
};
/* static const UINT8 obx_cl_setpath_rs_table[][OBX_SM_NUM_COLS] = { */
/* Event Action Next State */
/* DISCNT_R {OBX_CA_SND_REQ, OBX_CS_DISCNT_REQ_SENT },*/
/* OK_C {OBX_CA_NOTIFY, OBX_CS_NULL },*/
/* FAIL_C {OBX_CA_FAIL_RSP, OBX_CS_NULL },*/
/* PORT_CLS {OBX_CA_CONNECT_ERROR, OBX_CS_NOT_CONNECTED },*/
/* STATE {OBX_CA_STATE, OBX_CS_NULL },*/
/* }; */
static const UINT8 obx_cl_abort_rs_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* CONT_C */{OBX_CA_START_TIMER, OBX_CS_ABORT_REQ_SENT },
/* FAIL_C */{OBX_CA_NOTIFY, OBX_CS_CONNECTED }
};
static const UINT8 obx_cl_put_rs_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* CONT_C */{OBX_CA_NOTIFY, OBX_CS_PUT_TRANSACTION },
/* SESS_R */{OBX_CA_SND_REQ, OBX_CS_SESSION_REQ_SENT }
};
static const UINT8 obx_cl_get_rs_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* CONT_C */{OBX_CA_NOTIFY, OBX_CS_GET_TRANSACTION },
/* SESS_R */{OBX_CA_SND_REQ, OBX_CS_SESSION_REQ_SENT }
};
static const UINT8 obx_cl_put_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* PUT_R */{OBX_CA_SND_REQ, OBX_CS_PUT_REQ_SENT },
/* SESS_R */{OBX_CA_SND_REQ, OBX_CS_SESSION_REQ_SENT }
};
static const UINT8 obx_cl_get_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* GET_R */{OBX_CA_SND_REQ, OBX_CS_GET_REQ_SENT },
/* SESS_R */{OBX_CA_SND_REQ, OBX_CS_SESSION_REQ_SENT }
};
static const UINT8 obx_cl_put_s_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* DISCNT_R */{OBX_CA_SRM_SND_REQ, OBX_CS_DISCNT_REQ_SENT },
/* PUT_R */{OBX_CA_SRM_PUT_REQ, OBX_CS_PUT_SRM },
/* ABORT_R */{OBX_CA_SRM_SND_REQ, OBX_CS_ABORT_REQ_SENT },
/* CONT_C */{OBX_CA_SRM_PUT_NOTIFY, OBX_CS_PUT_SRM },
/* SESS_R */{OBX_CA_SND_REQ, OBX_CS_SESSION_REQ_SENT }
};
static const UINT8 obx_cl_get_s_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* DISCNT_R */{OBX_CA_SRM_SND_REQ, OBX_CS_DISCNT_REQ_SENT },
/* GET_R */{OBX_CA_SRM_GET_REQ, OBX_CS_GET_SRM },
/* ABORT_R */{OBX_CA_SRM_SND_REQ, OBX_CS_ABORT_REQ_SENT },
/* CONT_C */{OBX_CA_SRM_GET_NOTIFY, OBX_CS_GET_SRM },
/* SESS_R */{OBX_CA_SND_REQ, OBX_CS_SESSION_REQ_SENT }
};
static const UINT8 obx_cl_part_table[][OBX_SM_NUM_COLS] = {
/* Event Action Next State */
/* ABORT_R */{OBX_CA_SAVE_REQ, OBX_CS_PARTIAL_SENT },
/* FCS_SET */{OBX_CA_SND_PART, OBX_CS_NULL },
/* FAIL_C */{OBX_CA_SAVE_RSP, OBX_CS_NULL }
};
static const tOBX_SM_TBL obx_cl_main_state_table[] = {
obx_cl_not_conn_table,
obx_cl_sess_rs_table,
obx_cl_conn_rs_table,
obx_cl_unauth_table,
obx_cl_conn_table,
obx_cl_discnt_rs_table,
obx_cl_op_unauth_table,
NULL, /* obx_cl_setpath_rs_table */
NULL, /* obx_cl_action_rs_table */
obx_cl_abort_rs_table,
obx_cl_put_rs_table,
obx_cl_get_rs_table,
obx_cl_put_table,
obx_cl_get_table,
obx_cl_put_s_table,
obx_cl_get_s_table,
obx_cl_part_table
};
/*******************************************************************************
**
** Function obx_csm_event
**
** Description Handle events to the client state machine. It looks up the entry
** in the obx_csm_entry_map array. If it is a valid entry, it gets
** the state table. Set the next state, if not NULL state.Execute
** the action function according to the state table. If the state
** returned by action function is not NULL state, adjust the new
** state to the returned state.If (api_evt != MAX), call callback
** function.
**
** Returns void.
**
*******************************************************************************/
void obx_csm_event(tOBX_CL_CB *p_cb, tOBX_CL_EVENT event, BT_HDR *p_msg)
{
UINT8 curr_state = p_cb->state;
tOBX_SM_TBL state_table = NULL;
UINT8 action, entry;
tOBX_CL_STATE act_state = OBX_CS_NULL;
UINT8 prev_state = OBX_CS_NULL;
if( curr_state == OBX_CS_NULL || curr_state >= OBX_CS_MAX)
{
OBX_TRACE_WARNING1( "Invalid state: %d", curr_state) ;
if(p_msg)
GKI_freebuf(p_msg);
return;
}
OBX_TRACE_DEBUG4( "Client Handle 0x%x, State: %s, event: %s srm:0x%x",
p_cb->ll_cb.comm.handle, obx_cl_get_state_name( p_cb->state ), obx_cl_get_event_name(event), p_cb->srm ) ;
OBX_TRACE_DEBUG1("obx_csm_event csm offset:%d", p_cb->param.sess.obj_offset);
/* look up the state table for the current state */
/* lookup entry /w event & curr_state */
/* If entry is ignore, return.
* Otherwise, get state table (according to curr_state or all_state) */
if( (entry = obx_csm_entry_map[event][curr_state-1]) != OBX_SM_IGNORE )
{
if(entry&OBX_SM_ALL)
{
entry &= OBX_SM_ENTRY_MASK;
state_table = obx_cl_all_table;
}
else
state_table = obx_cl_main_state_table[curr_state-1];
}
if( entry == OBX_SM_IGNORE || state_table == NULL)
{
OBX_TRACE_WARNING4( "Ignore event %s(%d) in state %s(%d)",
obx_cl_get_event_name(event), event, obx_cl_get_state_name(curr_state), curr_state );
if(p_msg)
GKI_freebuf(p_msg);
return;
}
/* Get possible next state from state table. */
if( state_table[entry-1][OBX_SME_NEXT_STATE] != OBX_CS_NULL )
{
prev_state = p_cb->state;
p_cb->state = state_table[entry-1][OBX_SME_NEXT_STATE];
if (prev_state != p_cb->state)
{
p_cb->prev_state = prev_state;
OBX_TRACE_DEBUG1( "saved state1:%s", obx_cl_get_state_name(p_cb->prev_state));
}
}
OBX_TRACE_DEBUG1( "possible new state = %s", obx_cl_get_state_name( p_cb->state ) ) ;
/* If action is not ignore, clear param, exec action and get next state.
* The action function may set the Param for cback.
* Depending on param, call cback or free buffer. */
/* execute action */
action = state_table[entry-1][OBX_SME_ACTION];
if (action != OBX_SM_NO_ACTION)
{
act_state = (*obx_cl_action[action])(p_cb, p_msg);
}
/* adjust next state, if it needs to use the new state returned from action function */
if( act_state != OBX_CS_NULL)
{
prev_state = p_cb->state;
p_cb->state = act_state;
OBX_TRACE_DEBUG1( "new state = %s (action)", obx_cl_get_state_name( p_cb->state )) ;
if (prev_state != p_cb->state)
{
p_cb->prev_state = prev_state;
OBX_TRACE_DEBUG1( "saved state2:%s", obx_cl_get_state_name(p_cb->prev_state));
}
}
if(p_cb->api_evt)
{
(p_cb->p_cback) (p_cb->ll_cb.comm.handle, p_cb->api_evt, p_cb->rsp_code, p_cb->param, p_msg);
p_cb->api_evt = OBX_NULL_EVT;
p_cb->rsp_code = 0;
memset(&p_cb->param, 0, sizeof (p_cb->param) );
}
else if(action == OBX_SM_NO_ACTION && p_msg)
GKI_freebuf(p_msg);
OBX_TRACE_DEBUG1("after csm offset:%d", p_cb->param.sess.obj_offset);
OBX_TRACE_DEBUG2( "result state = %s/%d", obx_cl_get_state_name( p_cb->state ), p_cb->state ) ;
}
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