1 /******************************************************************************
3 * (C)Copyright 1998,1999 SysKonnect,
4 * a business unit of Schneider & Koch & Co. Datensysteme GmbH.
6 * See the file "skfddi.c" for further information.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * The information in this file is provided "AS IS" without warranty.
15 ******************************************************************************/
18 SMT Event Queue Management
26 static const char ID_sccs[] = "@(#)queue.c 2.9 97/08/04 (C) SK " ;
32 * init event queue management
34 void ev_init(struct s_smc *smc)
36 smc->q.ev_put = smc->q.ev_get = smc->q.ev_queue ;
42 void queue_event(struct s_smc *smc, int class, int event)
44 PRINTF("queue class %d event %d\n",class,event) ;
45 smc->q.ev_put->class = class ;
46 smc->q.ev_put->event = event ;
47 if (++smc->q.ev_put == &smc->q.ev_queue[MAX_EVENT])
48 smc->q.ev_put = smc->q.ev_queue ;
50 if (smc->q.ev_put == smc->q.ev_get) {
51 SMT_ERR_LOG(smc,SMT_E0137, SMT_E0137_MSG) ;
56 * timer_event is called from HW timer package.
58 void timer_event(struct s_smc *smc, u_long token)
60 PRINTF("timer event class %d token %d\n",
63 queue_event(smc,EV_T_CLASS(token),EV_T_EVENT(token));
68 * while event queue is not empty
69 * get event from queue
70 * send command to state machine
73 void ev_dispatcher(struct s_smc *smc)
75 struct event_queue *ev ; /* pointer into queue */
79 PRINTF("dispatch get %x put %x\n",ev,smc->q.ev_put) ;
80 while (ev != smc->q.ev_put) {
81 PRINTF("dispatch class %d event %d\n",ev->class,ev->event) ;
82 switch(class = ev->class) {
83 case EVENT_ECM : /* Entity Corordination Man. */
84 ecm(smc,(int)ev->event) ;
86 case EVENT_CFM : /* Configuration Man. */
87 cfm(smc,(int)ev->event) ;
89 case EVENT_RMT : /* Ring Man. */
90 rmt(smc,(int)ev->event) ;
93 smt_event(smc,(int)ev->event) ;
97 timer_test_event(smc,(int)ev->event) ;
100 case EVENT_PCMA : /* PHY A */
101 case EVENT_PCMB : /* PHY B */
103 if (class >= EVENT_PCMA &&
104 class < EVENT_PCMA + NUMPHYS) {
105 pcm(smc,class - EVENT_PCMA,(int)ev->event) ;
108 SMT_PANIC(smc,SMT_E0121, SMT_E0121_MSG) ;
112 if (++ev == &smc->q.ev_queue[MAX_EVENT])
113 ev = smc->q.ev_queue ;
115 /* Renew get: it is used in queue_events to detect overruns */
121 * smt_online connects to or disconnects from the ring
122 * MUST be called to initiate connection establishment
127 u_short smt_online(struct s_smc *smc, int on)
129 queue_event(smc,EVENT_ECM,on ? EC_CONNECT : EC_DISCONNECT) ;
131 return(smc->mib.fddiSMTCF_State) ;
135 * set SMT flag to value
138 * dump current flag setting
141 void do_smt_flag(struct s_smc *smc, char *flag, int value)
144 struct smt_debug *deb;
153 if (!strcmp(flag,"smt"))
155 else if (!strcmp(flag,"smtf"))
156 deb->d_smtf = value ;
157 else if (!strcmp(flag,"pcm"))
159 else if (!strcmp(flag,"rmt"))
161 else if (!strcmp(flag,"cfm"))
163 else if (!strcmp(flag,"ecm"))
165 printf("smt %d\n",deb->d_smt) ;
166 printf("smtf %d\n",deb->d_smtf) ;
167 printf("pcm %d\n",deb->d_pcm) ;
168 printf("rmt %d\n",deb->d_rmt) ;
169 printf("cfm %d\n",deb->d_cfm) ;
170 printf("ecm %d\n",deb->d_ecm) ;