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Diffstat (limited to 'drivers/net/fddi/skfp/queue.c')
-rw-r--r--drivers/net/fddi/skfp/queue.c173
1 files changed, 173 insertions, 0 deletions
diff --git a/drivers/net/fddi/skfp/queue.c b/drivers/net/fddi/skfp/queue.c
new file mode 100644
index 000000000000..c1a0df455a59
--- /dev/null
+++ b/drivers/net/fddi/skfp/queue.c
@@ -0,0 +1,173 @@
+/******************************************************************************
+ *
+ * (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(struct s_smc *smc)
+{
+ smc->q.ev_put = smc->q.ev_get = smc->q.ev_queue ;
+}
+
+/*
+ * add event to queue
+ */
+void queue_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(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(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(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(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