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/**
* @file designated_fsm.c
* @brief Implements designated Finite State Machines.
* @note Copyright (C) 2018 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA.
*/
#include "fsm.h"
#include "designated_fsm.h"
enum port_state designated_master_fsm(enum port_state state,
enum fsm_event event,
int mdiff)
{
enum port_state next = state;
if (EV_INITIALIZE == event || EV_POWERUP == event)
return PS_INITIALIZING;
switch (state) {
case PS_INITIALIZING:
switch (event) {
case EV_FAULT_DETECTED:
next = PS_FAULTY;
break;
case EV_INIT_COMPLETE:
next = PS_MASTER;
break;
default:
break;
}
break;
case PS_FAULTY:
if (event == EV_FAULT_CLEARED) {
next = PS_INITIALIZING;
}
break;
case PS_MASTER:
if (event == EV_FAULT_DETECTED) {
next = PS_FAULTY;
}
break;
default:
break;
}
return next;
}
enum port_state designated_slave_fsm(enum port_state state,
enum fsm_event event,
int mdiff)
{
enum port_state next = state;
if (EV_INITIALIZE == event || EV_POWERUP == event)
return PS_INITIALIZING;
switch (state) {
case PS_INITIALIZING:
switch (event) {
case EV_FAULT_DETECTED:
next = PS_FAULTY;
break;
case EV_INIT_COMPLETE:
next = PS_SLAVE;
break;
default:
break;
}
break;
case PS_FAULTY:
if (event == EV_FAULT_CLEARED) {
next = PS_INITIALIZING;
}
break;
case PS_SLAVE:
switch (event) {
case EV_FAULT_DETECTED:
next = PS_FAULTY;
break;
default:
break;
}
break;
default:
break;
}
return next;
}
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