174 lines
4.0 KiB
C
174 lines
4.0 KiB
C
/******************************************************************************
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*
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* (C)Copyright 1998,1999 SysKonnect,
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* a business unit of Schneider & Koch & Co. Datensysteme GmbH.
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*
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* See the file "skfddi.c" for further information.
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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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* The information in this file is provided "AS IS" without warranty.
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*
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******************************************************************************/
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/*
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SMT Event Queue Management
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*/
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#include "h/types.h"
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#include "h/fddi.h"
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#include "h/smc.h"
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#ifndef lint
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static const char ID_sccs[] = "@(#)queue.c 2.9 97/08/04 (C) SK " ;
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#endif
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#define PRINTF(a,b,c)
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/*
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* init event queue management
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*/
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void ev_init(struct s_smc *smc)
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{
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smc->q.ev_put = smc->q.ev_get = smc->q.ev_queue ;
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}
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/*
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* add event to queue
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*/
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void queue_event(struct s_smc *smc, int class, int event)
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{
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PRINTF("queue class %d event %d\n",class,event) ;
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smc->q.ev_put->class = class ;
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smc->q.ev_put->event = event ;
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if (++smc->q.ev_put == &smc->q.ev_queue[MAX_EVENT])
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smc->q.ev_put = smc->q.ev_queue ;
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if (smc->q.ev_put == smc->q.ev_get) {
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SMT_ERR_LOG(smc,SMT_E0137, SMT_E0137_MSG) ;
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}
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}
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/*
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* timer_event is called from HW timer package.
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*/
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void timer_event(struct s_smc *smc, u_long token)
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{
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PRINTF("timer event class %d token %d\n",
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EV_T_CLASS(token),
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EV_T_EVENT(token)) ;
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queue_event(smc,EV_T_CLASS(token),EV_T_EVENT(token));
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}
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/*
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* event dispatcher
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* while event queue is not empty
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* get event from queue
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* send command to state machine
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* end
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*/
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void ev_dispatcher(struct s_smc *smc)
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{
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struct event_queue *ev ; /* pointer into queue */
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int class ;
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ev = smc->q.ev_get ;
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PRINTF("dispatch get %x put %x\n",ev,smc->q.ev_put) ;
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while (ev != smc->q.ev_put) {
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PRINTF("dispatch class %d event %d\n",ev->class,ev->event) ;
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switch(class = ev->class) {
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case EVENT_ECM : /* Entity Corordination Man. */
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ecm(smc,(int)ev->event) ;
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break ;
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case EVENT_CFM : /* Configuration Man. */
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cfm(smc,(int)ev->event) ;
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break ;
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case EVENT_RMT : /* Ring Man. */
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rmt(smc,(int)ev->event) ;
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break ;
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case EVENT_SMT :
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smt_event(smc,(int)ev->event) ;
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break ;
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#ifdef CONCENTRATOR
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case 99 :
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timer_test_event(smc,(int)ev->event) ;
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break ;
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#endif
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case EVENT_PCMA : /* PHY A */
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case EVENT_PCMB : /* PHY B */
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default :
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if (class >= EVENT_PCMA &&
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class < EVENT_PCMA + NUMPHYS) {
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pcm(smc,class - EVENT_PCMA,(int)ev->event) ;
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break ;
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}
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SMT_PANIC(smc,SMT_E0121, SMT_E0121_MSG) ;
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return ;
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}
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if (++ev == &smc->q.ev_queue[MAX_EVENT])
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ev = smc->q.ev_queue ;
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/* Renew get: it is used in queue_events to detect overruns */
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smc->q.ev_get = ev;
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}
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}
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/*
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* smt_online connects to or disconnects from the ring
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* MUST be called to initiate connection establishment
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*
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* on 0 disconnect
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* on 1 connect
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*/
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u_short smt_online(struct s_smc *smc, int on)
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{
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queue_event(smc,EVENT_ECM,on ? EC_CONNECT : EC_DISCONNECT) ;
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ev_dispatcher(smc) ;
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return smc->mib.fddiSMTCF_State;
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}
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/*
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* set SMT flag to value
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* flag flag name
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* value flag value
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* dump current flag setting
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*/
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#ifdef CONCENTRATOR
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void do_smt_flag(struct s_smc *smc, char *flag, int value)
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{
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#ifdef DEBUG
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struct smt_debug *deb;
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SK_UNUSED(smc) ;
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#ifdef DEBUG_BRD
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deb = &smc->debug;
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#else
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deb = &debug;
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#endif
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if (!strcmp(flag,"smt"))
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deb->d_smt = value ;
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else if (!strcmp(flag,"smtf"))
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deb->d_smtf = value ;
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else if (!strcmp(flag,"pcm"))
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deb->d_pcm = value ;
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else if (!strcmp(flag,"rmt"))
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deb->d_rmt = value ;
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else if (!strcmp(flag,"cfm"))
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deb->d_cfm = value ;
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else if (!strcmp(flag,"ecm"))
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deb->d_ecm = value ;
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printf("smt %d\n",deb->d_smt) ;
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printf("smtf %d\n",deb->d_smtf) ;
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printf("pcm %d\n",deb->d_pcm) ;
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printf("rmt %d\n",deb->d_rmt) ;
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printf("cfm %d\n",deb->d_cfm) ;
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printf("ecm %d\n",deb->d_ecm) ;
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#endif /* DEBUG */
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}
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#endif
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