fddi: Move the FDDI drivers
Move the FDDI drivers into drivers/net/fddi/ and make the necessary Kconfig and Makefile changes. CC: "Maciej W. Rozycki" <macro@linux-mips.org> CC: Christoph Goos <cgoos@syskonnect.de> CC: <linux@syskonnect.de> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
536
drivers/net/fddi/skfp/ecm.c
Normal file
536
drivers/net/fddi/skfp/ecm.c
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@@ -0,0 +1,536 @@
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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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 ECM
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Entity Coordination Management
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Hardware independent state machine
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*/
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/*
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* Hardware independent state machine implemantation
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* The following external SMT functions are referenced :
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*
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* queue_event()
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* smt_timer_start()
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* smt_timer_stop()
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*
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* The following external HW dependent functions are referenced :
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* sm_pm_bypass_req()
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* sm_pm_ls_latch()
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* sm_pm_get_ls()
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*
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* The following HW dependent events are required :
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* NONE
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*
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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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#define KERNEL
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#include "h/smtstate.h"
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#ifndef lint
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static const char ID_sccs[] = "@(#)ecm.c 2.7 99/08/05 (C) SK " ;
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#endif
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/*
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* FSM Macros
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*/
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#define AFLAG 0x10
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#define GO_STATE(x) (smc->mib.fddiSMTECMState = (x)|AFLAG)
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#define ACTIONS_DONE() (smc->mib.fddiSMTECMState &= ~AFLAG)
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#define ACTIONS(x) (x|AFLAG)
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#define EC0_OUT 0 /* not inserted */
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#define EC1_IN 1 /* inserted */
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#define EC2_TRACE 2 /* tracing */
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#define EC3_LEAVE 3 /* leaving the ring */
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#define EC4_PATH_TEST 4 /* performing path test */
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#define EC5_INSERT 5 /* bypass being turned on */
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#define EC6_CHECK 6 /* checking bypass */
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#define EC7_DEINSERT 7 /* bypass being turnde off */
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#ifdef DEBUG
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/*
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* symbolic state names
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*/
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static const char * const ecm_states[] = {
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"EC0_OUT","EC1_IN","EC2_TRACE","EC3_LEAVE","EC4_PATH_TEST",
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"EC5_INSERT","EC6_CHECK","EC7_DEINSERT"
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} ;
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/*
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* symbolic event names
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*/
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static const char * const ecm_events[] = {
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"NONE","EC_CONNECT","EC_DISCONNECT","EC_TRACE_PROP","EC_PATH_TEST",
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"EC_TIMEOUT_TD","EC_TIMEOUT_TMAX",
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"EC_TIMEOUT_IMAX","EC_TIMEOUT_INMAX","EC_TEST_DONE"
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} ;
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#endif
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/*
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* all Globals are defined in smc.h
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* struct s_ecm
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*/
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/*
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* function declarations
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*/
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static void ecm_fsm(struct s_smc *smc, int cmd);
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static void start_ecm_timer(struct s_smc *smc, u_long value, int event);
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static void stop_ecm_timer(struct s_smc *smc);
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static void prop_actions(struct s_smc *smc);
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/*
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init ECM state machine
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clear all ECM vars and flags
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*/
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void ecm_init(struct s_smc *smc)
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{
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smc->e.path_test = PT_PASSED ;
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smc->e.trace_prop = 0 ;
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smc->e.sb_flag = 0 ;
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smc->mib.fddiSMTECMState = ACTIONS(EC0_OUT) ;
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smc->e.ecm_line_state = FALSE ;
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}
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/*
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ECM state machine
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called by dispatcher
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do
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display state change
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process event
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until SM is stable
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*/
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void ecm(struct s_smc *smc, int event)
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{
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int state ;
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do {
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DB_ECM("ECM : state %s%s",
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(smc->mib.fddiSMTECMState & AFLAG) ? "ACTIONS " : "",
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ecm_states[smc->mib.fddiSMTECMState & ~AFLAG]) ;
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DB_ECM(" event %s\n",ecm_events[event],0) ;
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state = smc->mib.fddiSMTECMState ;
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ecm_fsm(smc,event) ;
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event = 0 ;
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} while (state != smc->mib.fddiSMTECMState) ;
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ecm_state_change(smc,(int)smc->mib.fddiSMTECMState) ;
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}
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/*
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process ECM event
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*/
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static void ecm_fsm(struct s_smc *smc, int cmd)
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{
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int ls_a ; /* current line state PHY A */
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int ls_b ; /* current line state PHY B */
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int p ; /* ports */
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smc->mib.fddiSMTBypassPresent = sm_pm_bypass_present(smc) ;
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if (cmd == EC_CONNECT)
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smc->mib.fddiSMTRemoteDisconnectFlag = FALSE ;
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/* For AIX event notification: */
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/* Is a disconnect command remotely issued ? */
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if (cmd == EC_DISCONNECT &&
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smc->mib.fddiSMTRemoteDisconnectFlag == TRUE)
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AIX_EVENT (smc, (u_long) CIO_HARD_FAIL, (u_long)
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FDDI_REMOTE_DISCONNECT, smt_get_event_word(smc),
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smt_get_error_word(smc) );
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/*jd 05-Aug-1999 Bug #10419 "Port Disconnect fails at Dup MAc Cond."*/
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if (cmd == EC_CONNECT) {
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smc->e.DisconnectFlag = FALSE ;
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}
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else if (cmd == EC_DISCONNECT) {
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smc->e.DisconnectFlag = TRUE ;
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}
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switch(smc->mib.fddiSMTECMState) {
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case ACTIONS(EC0_OUT) :
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/*
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* We do not perform a path test
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*/
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smc->e.path_test = PT_PASSED ;
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smc->e.ecm_line_state = FALSE ;
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stop_ecm_timer(smc) ;
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ACTIONS_DONE() ;
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break ;
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case EC0_OUT:
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/*EC01*/
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if (cmd == EC_CONNECT && !smc->mib.fddiSMTBypassPresent
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&& smc->e.path_test==PT_PASSED) {
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GO_STATE(EC1_IN) ;
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break ;
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}
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/*EC05*/
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else if (cmd == EC_CONNECT && (smc->e.path_test==PT_PASSED) &&
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smc->mib.fddiSMTBypassPresent &&
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(smc->s.sas == SMT_DAS)) {
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GO_STATE(EC5_INSERT) ;
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break ;
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}
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break;
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case ACTIONS(EC1_IN) :
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stop_ecm_timer(smc) ;
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smc->e.trace_prop = 0 ;
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sm_ma_control(smc,MA_TREQ) ;
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for (p = 0 ; p < NUMPHYS ; p++)
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if (smc->mib.p[p].fddiPORTHardwarePresent)
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queue_event(smc,EVENT_PCMA+p,PC_START) ;
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ACTIONS_DONE() ;
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break ;
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case EC1_IN:
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/*EC12*/
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if (cmd == EC_TRACE_PROP) {
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prop_actions(smc) ;
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GO_STATE(EC2_TRACE) ;
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break ;
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}
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/*EC13*/
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else if (cmd == EC_DISCONNECT) {
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GO_STATE(EC3_LEAVE) ;
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break ;
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}
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break;
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case ACTIONS(EC2_TRACE) :
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start_ecm_timer(smc,MIB2US(smc->mib.fddiSMTTrace_MaxExpiration),
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EC_TIMEOUT_TMAX) ;
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ACTIONS_DONE() ;
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break ;
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case EC2_TRACE :
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/*EC22*/
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if (cmd == EC_TRACE_PROP) {
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prop_actions(smc) ;
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GO_STATE(EC2_TRACE) ;
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break ;
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}
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/*EC23a*/
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else if (cmd == EC_DISCONNECT) {
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smc->e.path_test = PT_EXITING ;
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GO_STATE(EC3_LEAVE) ;
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break ;
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}
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/*EC23b*/
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else if (smc->e.path_test == PT_PENDING) {
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GO_STATE(EC3_LEAVE) ;
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break ;
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}
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/*EC23c*/
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else if (cmd == EC_TIMEOUT_TMAX) {
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/* Trace_Max is expired */
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/* -> send AIX_EVENT */
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AIX_EVENT(smc, (u_long) FDDI_RING_STATUS,
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(u_long) FDDI_SMT_ERROR, (u_long)
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FDDI_TRACE_MAX, smt_get_error_word(smc));
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smc->e.path_test = PT_PENDING ;
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GO_STATE(EC3_LEAVE) ;
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break ;
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}
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break ;
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case ACTIONS(EC3_LEAVE) :
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start_ecm_timer(smc,smc->s.ecm_td_min,EC_TIMEOUT_TD) ;
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for (p = 0 ; p < NUMPHYS ; p++)
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queue_event(smc,EVENT_PCMA+p,PC_STOP) ;
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ACTIONS_DONE() ;
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break ;
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case EC3_LEAVE:
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/*EC30*/
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if (cmd == EC_TIMEOUT_TD && !smc->mib.fddiSMTBypassPresent &&
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(smc->e.path_test != PT_PENDING)) {
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GO_STATE(EC0_OUT) ;
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break ;
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}
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/*EC34*/
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else if (cmd == EC_TIMEOUT_TD &&
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(smc->e.path_test == PT_PENDING)) {
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GO_STATE(EC4_PATH_TEST) ;
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break ;
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}
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/*EC31*/
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else if (cmd == EC_CONNECT && smc->e.path_test == PT_PASSED) {
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GO_STATE(EC1_IN) ;
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break ;
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}
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/*EC33*/
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else if (cmd == EC_DISCONNECT &&
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smc->e.path_test == PT_PENDING) {
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smc->e.path_test = PT_EXITING ;
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/*
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* stay in state - state will be left via timeout
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*/
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}
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/*EC37*/
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else if (cmd == EC_TIMEOUT_TD &&
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smc->mib.fddiSMTBypassPresent &&
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smc->e.path_test != PT_PENDING) {
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GO_STATE(EC7_DEINSERT) ;
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break ;
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}
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break ;
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case ACTIONS(EC4_PATH_TEST) :
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stop_ecm_timer(smc) ;
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smc->e.path_test = PT_TESTING ;
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start_ecm_timer(smc,smc->s.ecm_test_done,EC_TEST_DONE) ;
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/* now perform path test ... just a simulation */
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ACTIONS_DONE() ;
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break ;
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case EC4_PATH_TEST :
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/* path test done delay */
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if (cmd == EC_TEST_DONE)
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smc->e.path_test = PT_PASSED ;
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if (smc->e.path_test == PT_FAILED)
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RS_SET(smc,RS_PATHTEST) ;
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/*EC40a*/
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if (smc->e.path_test == PT_FAILED &&
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!smc->mib.fddiSMTBypassPresent) {
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GO_STATE(EC0_OUT) ;
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break ;
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}
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/*EC40b*/
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else if (cmd == EC_DISCONNECT &&
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!smc->mib.fddiSMTBypassPresent) {
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GO_STATE(EC0_OUT) ;
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break ;
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}
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/*EC41*/
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else if (smc->e.path_test == PT_PASSED) {
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GO_STATE(EC1_IN) ;
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break ;
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}
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/*EC47a*/
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else if (smc->e.path_test == PT_FAILED &&
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smc->mib.fddiSMTBypassPresent) {
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GO_STATE(EC7_DEINSERT) ;
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break ;
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}
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/*EC47b*/
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else if (cmd == EC_DISCONNECT &&
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smc->mib.fddiSMTBypassPresent) {
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GO_STATE(EC7_DEINSERT) ;
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break ;
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}
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break ;
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case ACTIONS(EC5_INSERT) :
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sm_pm_bypass_req(smc,BP_INSERT);
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start_ecm_timer(smc,smc->s.ecm_in_max,EC_TIMEOUT_INMAX) ;
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ACTIONS_DONE() ;
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break ;
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case EC5_INSERT :
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/*EC56*/
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if (cmd == EC_TIMEOUT_INMAX) {
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GO_STATE(EC6_CHECK) ;
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break ;
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}
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/*EC57*/
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else if (cmd == EC_DISCONNECT) {
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GO_STATE(EC7_DEINSERT) ;
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break ;
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}
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break ;
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case ACTIONS(EC6_CHECK) :
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/*
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* in EC6_CHECK, we *POLL* the line state !
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* check whether both bypass switches have switched.
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*/
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start_ecm_timer(smc,smc->s.ecm_check_poll,0) ;
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smc->e.ecm_line_state = TRUE ; /* flag to pcm: report Q/HLS */
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(void) sm_pm_ls_latch(smc,PA,1) ; /* enable line state latch */
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(void) sm_pm_ls_latch(smc,PB,1) ; /* enable line state latch */
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ACTIONS_DONE() ;
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break ;
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case EC6_CHECK :
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ls_a = sm_pm_get_ls(smc,PA) ;
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ls_b = sm_pm_get_ls(smc,PB) ;
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/*EC61*/
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if (((ls_a == PC_QLS) || (ls_a == PC_HLS)) &&
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((ls_b == PC_QLS) || (ls_b == PC_HLS)) ) {
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smc->e.sb_flag = FALSE ;
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smc->e.ecm_line_state = FALSE ;
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GO_STATE(EC1_IN) ;
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break ;
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}
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/*EC66*/
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else if (!smc->e.sb_flag &&
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(((ls_a == PC_ILS) && (ls_b == PC_QLS)) ||
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((ls_a == PC_QLS) && (ls_b == PC_ILS)))){
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smc->e.sb_flag = TRUE ;
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DB_ECMN(1,"ECM : EC6_CHECK - stuck bypass\n",0,0) ;
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AIX_EVENT(smc, (u_long) FDDI_RING_STATUS, (u_long)
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FDDI_SMT_ERROR, (u_long) FDDI_BYPASS_STUCK,
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smt_get_error_word(smc));
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}
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/*EC67*/
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else if (cmd == EC_DISCONNECT) {
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smc->e.ecm_line_state = FALSE ;
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GO_STATE(EC7_DEINSERT) ;
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break ;
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}
|
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else {
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/*
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* restart poll
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*/
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start_ecm_timer(smc,smc->s.ecm_check_poll,0) ;
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}
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break ;
|
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case ACTIONS(EC7_DEINSERT) :
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sm_pm_bypass_req(smc,BP_DEINSERT);
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start_ecm_timer(smc,smc->s.ecm_i_max,EC_TIMEOUT_IMAX) ;
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ACTIONS_DONE() ;
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break ;
|
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case EC7_DEINSERT:
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/*EC70*/
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||||
if (cmd == EC_TIMEOUT_IMAX) {
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GO_STATE(EC0_OUT) ;
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break ;
|
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}
|
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/*EC75*/
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else if (cmd == EC_CONNECT && smc->e.path_test == PT_PASSED) {
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GO_STATE(EC5_INSERT) ;
|
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break ;
|
||||
}
|
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break;
|
||||
default:
|
||||
SMT_PANIC(smc,SMT_E0107, SMT_E0107_MSG) ;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
#ifndef CONCENTRATOR
|
||||
/*
|
||||
* trace propagation actions for SAS & DAS
|
||||
*/
|
||||
static void prop_actions(struct s_smc *smc)
|
||||
{
|
||||
int port_in = 0 ;
|
||||
int port_out = 0 ;
|
||||
|
||||
RS_SET(smc,RS_EVENT) ;
|
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switch (smc->s.sas) {
|
||||
case SMT_SAS :
|
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port_in = port_out = pcm_get_s_port(smc) ;
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||||
break ;
|
||||
case SMT_DAS :
|
||||
port_in = cfm_get_mac_input(smc) ; /* PA or PB */
|
||||
port_out = cfm_get_mac_output(smc) ; /* PA or PB */
|
||||
break ;
|
||||
case SMT_NAC :
|
||||
SMT_PANIC(smc,SMT_E0108, SMT_E0108_MSG) ;
|
||||
return ;
|
||||
}
|
||||
|
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DB_ECM("ECM : prop_actions - trace_prop %d\n", smc->e.trace_prop,0) ;
|
||||
DB_ECM("ECM : prop_actions - in %d out %d\n", port_in,port_out) ;
|
||||
|
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if (smc->e.trace_prop & ENTITY_BIT(ENTITY_MAC)) {
|
||||
/* trace initiatior */
|
||||
DB_ECM("ECM : initiate TRACE on PHY %c\n",'A'+port_in-PA,0) ;
|
||||
queue_event(smc,EVENT_PCM+port_in,PC_TRACE) ;
|
||||
}
|
||||
else if ((smc->e.trace_prop & ENTITY_BIT(ENTITY_PHY(PA))) &&
|
||||
port_out != PA) {
|
||||
/* trace propagate upstream */
|
||||
DB_ECM("ECM : propagate TRACE on PHY B\n",0,0) ;
|
||||
queue_event(smc,EVENT_PCMB,PC_TRACE) ;
|
||||
}
|
||||
else if ((smc->e.trace_prop & ENTITY_BIT(ENTITY_PHY(PB))) &&
|
||||
port_out != PB) {
|
||||
/* trace propagate upstream */
|
||||
DB_ECM("ECM : propagate TRACE on PHY A\n",0,0) ;
|
||||
queue_event(smc,EVENT_PCMA,PC_TRACE) ;
|
||||
}
|
||||
else {
|
||||
/* signal trace termination */
|
||||
DB_ECM("ECM : TRACE terminated\n",0,0) ;
|
||||
smc->e.path_test = PT_PENDING ;
|
||||
}
|
||||
smc->e.trace_prop = 0 ;
|
||||
}
|
||||
#else
|
||||
/*
|
||||
* trace propagation actions for Concentrator
|
||||
*/
|
||||
static void prop_actions(struct s_smc *smc)
|
||||
{
|
||||
int initiator ;
|
||||
int upstream ;
|
||||
int p ;
|
||||
|
||||
RS_SET(smc,RS_EVENT) ;
|
||||
while (smc->e.trace_prop) {
|
||||
DB_ECM("ECM : prop_actions - trace_prop %d\n",
|
||||
smc->e.trace_prop,0) ;
|
||||
|
||||
if (smc->e.trace_prop & ENTITY_BIT(ENTITY_MAC)) {
|
||||
initiator = ENTITY_MAC ;
|
||||
smc->e.trace_prop &= ~ENTITY_BIT(ENTITY_MAC) ;
|
||||
DB_ECM("ECM: MAC initiates trace\n",0,0) ;
|
||||
}
|
||||
else {
|
||||
for (p = NUMPHYS-1 ; p >= 0 ; p--) {
|
||||
if (smc->e.trace_prop &
|
||||
ENTITY_BIT(ENTITY_PHY(p)))
|
||||
break ;
|
||||
}
|
||||
initiator = ENTITY_PHY(p) ;
|
||||
smc->e.trace_prop &= ~ENTITY_BIT(ENTITY_PHY(p)) ;
|
||||
}
|
||||
upstream = cem_get_upstream(smc,initiator) ;
|
||||
|
||||
if (upstream == ENTITY_MAC) {
|
||||
/* signal trace termination */
|
||||
DB_ECM("ECM : TRACE terminated\n",0,0) ;
|
||||
smc->e.path_test = PT_PENDING ;
|
||||
}
|
||||
else {
|
||||
/* trace propagate upstream */
|
||||
DB_ECM("ECM : propagate TRACE on PHY %d\n",upstream,0) ;
|
||||
queue_event(smc,EVENT_PCM+upstream,PC_TRACE) ;
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* SMT timer interface
|
||||
* start ECM timer
|
||||
*/
|
||||
static void start_ecm_timer(struct s_smc *smc, u_long value, int event)
|
||||
{
|
||||
smt_timer_start(smc,&smc->e.ecm_timer,value,EV_TOKEN(EVENT_ECM,event));
|
||||
}
|
||||
|
||||
/*
|
||||
* SMT timer interface
|
||||
* stop ECM timer
|
||||
*/
|
||||
static void stop_ecm_timer(struct s_smc *smc)
|
||||
{
|
||||
if (smc->e.ecm_timer.tm_active)
|
||||
smt_timer_stop(smc,&smc->e.ecm_timer) ;
|
||||
}
|
Reference in New Issue
Block a user