patch-2.2.18 linux/drivers/net/skfp/queue.c

• Lines: 186
• Date: Fri Sep 1 13:48:23 2000
• Orig file: v2.2.17/drivers/net/skfp/queue.c
• Orig date: Thu Jan 1 01:00:00 1970

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/net/skfp/queue.c linux/drivers/net/skfp/queue.c
@@ -0,0 +1,185 @@
+/******************************************************************************
+ *
+ *	(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