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Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
170 lines
3.8 KiB
C
170 lines
3.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/******************************************************************************
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*
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* (C)Copyright 1998,1999 SysKonnect,
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* a business unit of Schneider & Koch & Co. Datensysteme GmbH.
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*
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* See the file "skfddi.c" for further information.
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*
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* The information in this file is provided "AS IS" without warranty.
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*
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******************************************************************************/
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/*
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SMT Event Queue Management
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*/
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#include "h/types.h"
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#include "h/fddi.h"
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#include "h/smc.h"
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#ifndef lint
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static const char ID_sccs[] = "@(#)queue.c 2.9 97/08/04 (C) SK " ;
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#endif
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#define PRINTF(a,b,c)
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/*
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* init event queue management
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*/
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void ev_init(struct s_smc *smc)
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{
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smc->q.ev_put = smc->q.ev_get = smc->q.ev_queue ;
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}
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/*
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* add event to queue
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*/
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void queue_event(struct s_smc *smc, int class, int event)
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{
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PRINTF("queue class %d event %d\n",class,event) ;
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smc->q.ev_put->class = class ;
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smc->q.ev_put->event = event ;
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if (++smc->q.ev_put == &smc->q.ev_queue[MAX_EVENT])
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smc->q.ev_put = smc->q.ev_queue ;
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if (smc->q.ev_put == smc->q.ev_get) {
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SMT_ERR_LOG(smc,SMT_E0137, SMT_E0137_MSG) ;
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}
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}
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/*
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* timer_event is called from HW timer package.
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*/
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void timer_event(struct s_smc *smc, u_long token)
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{
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PRINTF("timer event class %d token %d\n",
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EV_T_CLASS(token),
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EV_T_EVENT(token)) ;
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queue_event(smc,EV_T_CLASS(token),EV_T_EVENT(token));
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}
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/*
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* event dispatcher
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* while event queue is not empty
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* get event from queue
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* send command to state machine
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* end
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*/
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void ev_dispatcher(struct s_smc *smc)
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{
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struct event_queue *ev ; /* pointer into queue */
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int class ;
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ev = smc->q.ev_get ;
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PRINTF("dispatch get %x put %x\n",ev,smc->q.ev_put) ;
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while (ev != smc->q.ev_put) {
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PRINTF("dispatch class %d event %d\n",ev->class,ev->event) ;
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switch(class = ev->class) {
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case EVENT_ECM : /* Entity Corordination Man. */
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ecm(smc,(int)ev->event) ;
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break ;
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case EVENT_CFM : /* Configuration Man. */
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cfm(smc,(int)ev->event) ;
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break ;
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case EVENT_RMT : /* Ring Man. */
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rmt(smc,(int)ev->event) ;
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break ;
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case EVENT_SMT :
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smt_event(smc,(int)ev->event) ;
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break ;
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#ifdef CONCENTRATOR
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case 99 :
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timer_test_event(smc,(int)ev->event) ;
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break ;
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#endif
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case EVENT_PCMA : /* PHY A */
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case EVENT_PCMB : /* PHY B */
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default :
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if (class >= EVENT_PCMA &&
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class < EVENT_PCMA + NUMPHYS) {
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pcm(smc,class - EVENT_PCMA,(int)ev->event) ;
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break ;
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}
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SMT_PANIC(smc,SMT_E0121, SMT_E0121_MSG) ;
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return ;
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}
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if (++ev == &smc->q.ev_queue[MAX_EVENT])
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ev = smc->q.ev_queue ;
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/* Renew get: it is used in queue_events to detect overruns */
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smc->q.ev_get = ev;
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}
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}
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/*
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* smt_online connects to or disconnects from the ring
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* MUST be called to initiate connection establishment
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*
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* on 0 disconnect
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* on 1 connect
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*/
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u_short smt_online(struct s_smc *smc, int on)
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{
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queue_event(smc,EVENT_ECM,on ? EC_CONNECT : EC_DISCONNECT) ;
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ev_dispatcher(smc) ;
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return smc->mib.fddiSMTCF_State;
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}
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/*
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* set SMT flag to value
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* flag flag name
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* value flag value
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* dump current flag setting
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*/
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#ifdef CONCENTRATOR
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void do_smt_flag(struct s_smc *smc, char *flag, int value)
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{
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#ifdef DEBUG
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struct smt_debug *deb;
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SK_UNUSED(smc) ;
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#ifdef DEBUG_BRD
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deb = &smc->debug;
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#else
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deb = &debug;
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#endif
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if (!strcmp(flag,"smt"))
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deb->d_smt = value ;
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else if (!strcmp(flag,"smtf"))
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deb->d_smtf = value ;
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else if (!strcmp(flag,"pcm"))
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deb->d_pcm = value ;
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else if (!strcmp(flag,"rmt"))
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deb->d_rmt = value ;
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else if (!strcmp(flag,"cfm"))
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deb->d_cfm = value ;
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else if (!strcmp(flag,"ecm"))
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deb->d_ecm = value ;
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printf("smt %d\n",deb->d_smt) ;
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printf("smtf %d\n",deb->d_smtf) ;
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printf("pcm %d\n",deb->d_pcm) ;
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printf("rmt %d\n",deb->d_rmt) ;
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printf("cfm %d\n",deb->d_cfm) ;
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printf("ecm %d\n",deb->d_ecm) ;
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#endif /* DEBUG */
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}
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#endif
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