queue.c
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上传日期:2013-02-24
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文件大小:4k
- /******************************************************************************
- *
- * (C)Copyright 1998,1999 SysKonnect,
- * a business unit of Schneider & Koch & Co. Datensysteme GmbH.
- *
- * See the file "skfddi.c" for further information.
- *
- * 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.
- *
- * The information in this file is provided "AS IS" without warranty.
- *
- ******************************************************************************/
- /*
- SMT Event Queue Management
- */
- #include "h/types.h"
- #include "h/fddi.h"
- #include "h/smc.h"
- #ifndef lint
- static const char ID_sccs[] = "@(#)queue.c 2.9 97/08/04 (C) SK " ;
- #endif
- #define PRINTF(a,b,c)
- /*
- * init event queue management
- */
- void ev_init(smc)
- struct s_smc *smc ;
- {
- smc->q.ev_put = smc->q.ev_get = smc->q.ev_queue ;
- }
- /*
- * add event to queue
- */
- void queue_event(smc,class,event)
- struct s_smc *smc ;
- int class ;
- int event ;
- {
- PRINTF("queue class %d event %dn",class,event) ;
- smc->q.ev_put->class = class ;
- smc->q.ev_put->event = event ;
- if (++smc->q.ev_put == &smc->q.ev_queue[MAX_EVENT])
- smc->q.ev_put = smc->q.ev_queue ;
- if (smc->q.ev_put == smc->q.ev_get) {
- SMT_ERR_LOG(smc,SMT_E0137, SMT_E0137_MSG) ;
- }
- }
- /*
- * timer_event is called from HW timer package.
- */
- void timer_event(smc,token)
- struct s_smc *smc ;
- u_long token ;
- {
- PRINTF("timer event class %d token %dn",
- EV_T_CLASS(token),
- EV_T_EVENT(token)) ;
- queue_event(smc,EV_T_CLASS(token),EV_T_EVENT(token));
- }
- /*
- * event dispatcher
- * while event queue is not empty
- * get event from queue
- * send command to state machine
- * end
- */
- void ev_dispatcher(smc)
- struct s_smc *smc ;
- {
- struct event_queue *ev ; /* pointer into queue */
- int class ;
- ev = smc->q.ev_get ;
- PRINTF("dispatch get %x put %xn",ev,smc->q.ev_put) ;
- while (ev != smc->q.ev_put) {
- PRINTF("dispatch class %d event %dn",ev->class,ev->event) ;
- switch(class = ev->class) {
- case EVENT_ECM : /* Entity Corordination Man. */
- ecm(smc,(int)ev->event) ;
- break ;
- case EVENT_CFM : /* Configuration Man. */
- cfm(smc,(int)ev->event) ;
- break ;
- case EVENT_RMT : /* Ring Man. */
- rmt(smc,(int)ev->event) ;
- break ;
- case EVENT_SMT :
- smt_event(smc,(int)ev->event) ;
- break ;
- #ifdef CONCENTRATOR
- case 99 :
- timer_test_event(smc,(int)ev->event) ;
- break ;
- #endif
- case EVENT_PCMA : /* PHY A */
- case EVENT_PCMB : /* PHY B */
- default :
- if (class >= EVENT_PCMA &&
- class < EVENT_PCMA + NUMPHYS) {
- pcm(smc,class - EVENT_PCMA,(int)ev->event) ;
- break ;
- }
- SMT_PANIC(smc,SMT_E0121, SMT_E0121_MSG) ;
- return ;
- }
- if (++ev == &smc->q.ev_queue[MAX_EVENT])
- ev = smc->q.ev_queue ;
- /* Renew get: it is used in queue_events to detect overruns */
- smc->q.ev_get = ev;
- }
- }
- /*
- * smt_online connects to or disconnects from the ring
- * MUST be called to initiate connection establishment
- *
- * on 0 disconnect
- * on 1 connect
- */
- u_short smt_online(smc,on)
- struct s_smc *smc ;
- int on ;
- {
- queue_event(smc,EVENT_ECM,on ? EC_CONNECT : EC_DISCONNECT) ;
- ev_dispatcher(smc) ;
- return(smc->mib.fddiSMTCF_State) ;
- }
- /*
- * set SMT flag to value
- * flag flag name
- * value flag value
- * dump current flag setting
- */
- #ifdef CONCENTRATOR
- void do_smt_flag(smc,flag,value)
- struct s_smc *smc ;
- char *flag ;
- int value ;
- {
- #ifdef DEBUG
- struct smt_debug *deb;
- SK_UNUSED(smc) ;
- #ifdef DEBUG_BRD
- deb = &smc->debug;
- #else
- deb = &debug;
- #endif
- if (!strcmp(flag,"smt"))
- deb->d_smt = value ;
- else if (!strcmp(flag,"smtf"))
- deb->d_smtf = value ;
- else if (!strcmp(flag,"pcm"))
- deb->d_pcm = value ;
- else if (!strcmp(flag,"rmt"))
- deb->d_rmt = value ;
- else if (!strcmp(flag,"cfm"))
- deb->d_cfm = value ;
- else if (!strcmp(flag,"ecm"))
- deb->d_ecm = value ;
- printf("smt %dn",deb->d_smt) ;
- printf("smtf %dn",deb->d_smtf) ;
- printf("pcm %dn",deb->d_pcm) ;
- printf("rmt %dn",deb->d_rmt) ;
- printf("cfm %dn",deb->d_cfm) ;
- printf("ecm %dn",deb->d_ecm) ;
- #endif /* DEBUG */
- }
- #endif