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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 | /****************************************************************************** * * (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 %d\n",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 %d\n", 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 %x\n",ev,smc->q.ev_put) ; while (ev != smc->q.ev_put) { PRINTF("dispatch class %d event %d\n",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 %d\n",deb->d_smt) ; printf("smtf %d\n",deb->d_smtf) ; printf("pcm %d\n",deb->d_pcm) ; printf("rmt %d\n",deb->d_rmt) ; printf("cfm %d\n",deb->d_cfm) ; printf("ecm %d\n",deb->d_ecm) ; #endif /* DEBUG */ } #endif |