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