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-rw-r--r--drivers/net/skfp/cfm.c627
1 files changed, 627 insertions, 0 deletions
diff --git a/drivers/net/skfp/cfm.c b/drivers/net/skfp/cfm.c
new file mode 100644
index 000000000000..4c8aaa762333
--- /dev/null
+++ b/drivers/net/skfp/cfm.c
@@ -0,0 +1,627 @@
+/******************************************************************************
+ *
+ * (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 CFM
+ Configuration Management
+ DAS with single MAC
+*/
+
+/*
+ * Hardware independent state machine implemantation
+ * The following external SMT functions are referenced :
+ *
+ * queue_event()
+ *
+ * The following external HW dependent functions are referenced :
+ * config_mux()
+ *
+ * The following HW dependent events are required :
+ * NONE
+ */
+
+#include "h/types.h"
+#include "h/fddi.h"
+#include "h/smc.h"
+
+#define KERNEL
+#include "h/smtstate.h"
+
+#ifndef lint
+static const char ID_sccs[] = "@(#)cfm.c 2.18 98/10/06 (C) SK " ;
+#endif
+
+/*
+ * FSM Macros
+ */
+#define AFLAG 0x10
+#define GO_STATE(x) (smc->mib.fddiSMTCF_State = (x)|AFLAG)
+#define ACTIONS_DONE() (smc->mib.fddiSMTCF_State &= ~AFLAG)
+#define ACTIONS(x) (x|AFLAG)
+
+#ifdef DEBUG
+/*
+ * symbolic state names
+ */
+static const char * const cfm_states[] = {
+ "SC0_ISOLATED","CF1","CF2","CF3","CF4",
+ "SC1_WRAP_A","SC2_WRAP_B","SC5_TRHU_B","SC7_WRAP_S",
+ "SC9_C_WRAP_A","SC10_C_WRAP_B","SC11_C_WRAP_S","SC4_THRU_A"
+} ;
+
+/*
+ * symbolic event names
+ */
+static const char * const cfm_events[] = {
+ "NONE","CF_LOOP_A","CF_LOOP_B","CF_JOIN_A","CF_JOIN_B"
+} ;
+#endif
+
+/*
+ * map from state to downstream port type
+ */
+static const u_char cf_to_ptype[] = {
+ TNONE,TNONE,TNONE,TNONE,TNONE,
+ TNONE,TB,TB,TS,
+ TA,TB,TS,TB
+} ;
+
+/*
+ * CEM port states
+ */
+#define CEM_PST_DOWN 0
+#define CEM_PST_UP 1
+#define CEM_PST_HOLD 2
+/* define portstate array only for A and B port */
+/* Do this within the smc structure (use in multiple cards) */
+
+/*
+ * all Globals are defined in smc.h
+ * struct s_cfm
+ */
+
+/*
+ * function declarations
+ */
+static void cfm_fsm(struct s_smc *smc, int cmd);
+
+/*
+ init CFM state machine
+ clear all CFM vars and flags
+*/
+void cfm_init(struct s_smc *smc)
+{
+ smc->mib.fddiSMTCF_State = ACTIONS(SC0_ISOLATED) ;
+ smc->r.rm_join = 0 ;
+ smc->r.rm_loop = 0 ;
+ smc->y[PA].scrub = 0 ;
+ smc->y[PB].scrub = 0 ;
+ smc->y[PA].cem_pst = CEM_PST_DOWN ;
+ smc->y[PB].cem_pst = CEM_PST_DOWN ;
+}
+
+/* Some terms conditions used by the selection criteria */
+#define THRU_ENABLED(smc) (smc->y[PA].pc_mode != PM_TREE && \
+ smc->y[PB].pc_mode != PM_TREE)
+/* Selection criteria for the ports */
+static void selection_criteria (struct s_smc *smc, struct s_phy *phy)
+{
+
+ switch (phy->mib->fddiPORTMy_Type) {
+ case TA:
+ if ( !THRU_ENABLED(smc) && smc->y[PB].cf_join ) {
+ phy->wc_flag = TRUE ;
+ } else {
+ phy->wc_flag = FALSE ;
+ }
+
+ break;
+ case TB:
+ /* take precedence over PA */
+ phy->wc_flag = FALSE ;
+ break;
+ case TS:
+ phy->wc_flag = FALSE ;
+ break;
+ case TM:
+ phy->wc_flag = FALSE ;
+ break;
+ }
+
+}
+
+void all_selection_criteria(struct s_smc *smc)
+{
+ struct s_phy *phy ;
+ int p ;
+
+ for ( p = 0,phy = smc->y ; p < NUMPHYS; p++, phy++ ) {
+ /* Do the selection criteria */
+ selection_criteria (smc,phy);
+ }
+}
+
+static void cem_priv_state(struct s_smc *smc, int event)
+/* State machine for private PORT states: used to optimize dual homing */
+{
+ int np; /* Number of the port */
+ int i;
+
+ /* Do this only in a DAS */
+ if (smc->s.sas != SMT_DAS )
+ return ;
+
+ np = event - CF_JOIN;
+
+ if (np != PA && np != PB) {
+ return ;
+ }
+ /* Change the port state according to the event (portnumber) */
+ if (smc->y[np].cf_join) {
+ smc->y[np].cem_pst = CEM_PST_UP ;
+ } else if (!smc->y[np].wc_flag) {
+ /* set the port to done only if it is not withheld */
+ smc->y[np].cem_pst = CEM_PST_DOWN ;
+ }
+
+ /* Don't set an hold port to down */
+
+ /* Check all ports of restart conditions */
+ for (i = 0 ; i < 2 ; i ++ ) {
+ /* Check all port for PORT is on hold and no withhold is done */
+ if ( smc->y[i].cem_pst == CEM_PST_HOLD && !smc->y[i].wc_flag ) {
+ smc->y[i].cem_pst = CEM_PST_DOWN;
+ queue_event(smc,(int)(EVENT_PCM+i),PC_START) ;
+ }
+ if ( smc->y[i].cem_pst == CEM_PST_UP && smc->y[i].wc_flag ) {
+ smc->y[i].cem_pst = CEM_PST_HOLD;
+ queue_event(smc,(int)(EVENT_PCM+i),PC_START) ;
+ }
+ if ( smc->y[i].cem_pst == CEM_PST_DOWN && smc->y[i].wc_flag ) {
+ /*
+ * The port must be restarted when the wc_flag
+ * will be reset. So set the port on hold.
+ */
+ smc->y[i].cem_pst = CEM_PST_HOLD;
+ }
+ }
+ return ;
+}
+
+/*
+ CFM state machine
+ called by dispatcher
+
+ do
+ display state change
+ process event
+ until SM is stable
+*/
+void cfm(struct s_smc *smc, int event)
+{
+ int state ; /* remember last state */
+ int cond ;
+ int oldstate ;
+
+ /* We will do the following: */
+ /* - compute the variable WC_Flag for every port (This is where */
+ /* we can extend the requested path checking !!) */
+ /* - do the old (SMT 6.2 like) state machine */
+ /* - do the resulting station states */
+
+ all_selection_criteria (smc);
+
+ /* We will check now whether a state transition is allowed or not */
+ /* - change the portstates */
+ cem_priv_state (smc, event);
+
+ oldstate = smc->mib.fddiSMTCF_State ;
+ do {
+ DB_CFM("CFM : state %s%s",
+ (smc->mib.fddiSMTCF_State & AFLAG) ? "ACTIONS " : "",
+ cfm_states[smc->mib.fddiSMTCF_State & ~AFLAG]) ;
+ DB_CFM(" event %s\n",cfm_events[event],0) ;
+ state = smc->mib.fddiSMTCF_State ;
+ cfm_fsm(smc,event) ;
+ event = 0 ;
+ } while (state != smc->mib.fddiSMTCF_State) ;
+
+#ifndef SLIM_SMT
+ /*
+ * check peer wrap condition
+ */
+ cond = FALSE ;
+ if ( (smc->mib.fddiSMTCF_State == SC9_C_WRAP_A &&
+ smc->y[PA].pc_mode == PM_PEER) ||
+ (smc->mib.fddiSMTCF_State == SC10_C_WRAP_B &&
+ smc->y[PB].pc_mode == PM_PEER) ||
+ (smc->mib.fddiSMTCF_State == SC11_C_WRAP_S &&
+ smc->y[PS].pc_mode == PM_PEER &&
+ smc->y[PS].mib->fddiPORTNeighborType != TS ) ) {
+ cond = TRUE ;
+ }
+ if (cond != smc->mib.fddiSMTPeerWrapFlag)
+ smt_srf_event(smc,SMT_COND_SMT_PEER_WRAP,0,cond) ;
+
+#if 0
+ /*
+ * Don't send ever MAC_PATH_CHANGE events. Our MAC is hard-wired
+ * to the primary path.
+ */
+ /*
+ * path change
+ */
+ if (smc->mib.fddiSMTCF_State != oldstate) {
+ smt_srf_event(smc,SMT_EVENT_MAC_PATH_CHANGE,INDEX_MAC,0) ;
+ }
+#endif
+#endif /* no SLIM_SMT */
+
+ /*
+ * set MAC port type
+ */
+ smc->mib.m[MAC0].fddiMACDownstreamPORTType =
+ cf_to_ptype[smc->mib.fddiSMTCF_State] ;
+ cfm_state_change(smc,(int)smc->mib.fddiSMTCF_State) ;
+}
+
+/*
+ process CFM event
+*/
+/*ARGSUSED1*/
+static void cfm_fsm(struct s_smc *smc, int cmd)
+{
+ switch(smc->mib.fddiSMTCF_State) {
+ case ACTIONS(SC0_ISOLATED) :
+ smc->mib.p[PA].fddiPORTCurrentPath = MIB_PATH_ISOLATED ;
+ smc->mib.p[PB].fddiPORTCurrentPath = MIB_PATH_ISOLATED ;
+ smc->mib.p[PA].fddiPORTMACPlacement = 0 ;
+ smc->mib.p[PB].fddiPORTMACPlacement = 0 ;
+ smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_SEPA ;
+ config_mux(smc,MUX_ISOLATE) ; /* configure PHY Mux */
+ smc->r.rm_loop = FALSE ;
+ smc->r.rm_join = FALSE ;
+ queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
+ /* Don't do the WC-Flag changing here */
+ ACTIONS_DONE() ;
+ DB_CFMN(1,"CFM : %s\n",cfm_states[smc->mib.fddiSMTCF_State],0) ;
+ break;
+ case SC0_ISOLATED :
+ /*SC07*/
+ /*SAS port can be PA or PB ! */
+ if (smc->s.sas && (smc->y[PA].cf_join || smc->y[PA].cf_loop ||
+ smc->y[PB].cf_join || smc->y[PB].cf_loop)) {
+ GO_STATE(SC11_C_WRAP_S) ;
+ break ;
+ }
+ /*SC01*/
+ if ((smc->y[PA].cem_pst == CEM_PST_UP && smc->y[PA].cf_join &&
+ !smc->y[PA].wc_flag) || smc->y[PA].cf_loop) {
+ GO_STATE(SC9_C_WRAP_A) ;
+ break ;
+ }
+ /*SC02*/
+ if ((smc->y[PB].cem_pst == CEM_PST_UP && smc->y[PB].cf_join &&
+ !smc->y[PB].wc_flag) || smc->y[PB].cf_loop) {
+ GO_STATE(SC10_C_WRAP_B) ;
+ break ;
+ }
+ break ;
+ case ACTIONS(SC9_C_WRAP_A) :
+ smc->mib.p[PA].fddiPORTCurrentPath = MIB_PATH_CONCATENATED ;
+ smc->mib.p[PB].fddiPORTCurrentPath = MIB_PATH_ISOLATED ;
+ smc->mib.p[PA].fddiPORTMACPlacement = INDEX_MAC ;
+ smc->mib.p[PB].fddiPORTMACPlacement = 0 ;
+ smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_CON ;
+ config_mux(smc,MUX_WRAPA) ; /* configure PHY mux */
+ if (smc->y[PA].cf_loop) {
+ smc->r.rm_join = FALSE ;
+ smc->r.rm_loop = TRUE ;
+ queue_event(smc,EVENT_RMT,RM_LOOP) ;/* signal RMT */
+ }
+ if (smc->y[PA].cf_join) {
+ smc->r.rm_loop = FALSE ;
+ smc->r.rm_join = TRUE ;
+ queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
+ }
+ ACTIONS_DONE() ;
+ DB_CFMN(1,"CFM : %s\n",cfm_states[smc->mib.fddiSMTCF_State],0) ;
+ break ;
+ case SC9_C_WRAP_A :
+ /*SC10*/
+ if ( (smc->y[PA].wc_flag || !smc->y[PA].cf_join) &&
+ !smc->y[PA].cf_loop ) {
+ GO_STATE(SC0_ISOLATED) ;
+ break ;
+ }
+ /*SC12*/
+ else if ( (smc->y[PB].cf_loop && smc->y[PA].cf_join &&
+ smc->y[PA].cem_pst == CEM_PST_UP) ||
+ ((smc->y[PB].cf_loop ||
+ (smc->y[PB].cf_join &&
+ smc->y[PB].cem_pst == CEM_PST_UP)) &&
+ (smc->y[PA].pc_mode == PM_TREE ||
+ smc->y[PB].pc_mode == PM_TREE))) {
+ smc->y[PA].scrub = TRUE ;
+ GO_STATE(SC10_C_WRAP_B) ;
+ break ;
+ }
+ /*SC14*/
+ else if (!smc->s.attach_s &&
+ smc->y[PA].cf_join &&
+ smc->y[PA].cem_pst == CEM_PST_UP &&
+ smc->y[PA].pc_mode == PM_PEER && smc->y[PB].cf_join &&
+ smc->y[PB].cem_pst == CEM_PST_UP &&
+ smc->y[PB].pc_mode == PM_PEER) {
+ smc->y[PA].scrub = TRUE ;
+ smc->y[PB].scrub = TRUE ;
+ GO_STATE(SC4_THRU_A) ;
+ break ;
+ }
+ /*SC15*/
+ else if ( smc->s.attach_s &&
+ smc->y[PA].cf_join &&
+ smc->y[PA].cem_pst == CEM_PST_UP &&
+ smc->y[PA].pc_mode == PM_PEER &&
+ smc->y[PB].cf_join &&
+ smc->y[PB].cem_pst == CEM_PST_UP &&
+ smc->y[PB].pc_mode == PM_PEER) {
+ smc->y[PA].scrub = TRUE ;
+ smc->y[PB].scrub = TRUE ;
+ GO_STATE(SC5_THRU_B) ;
+ break ;
+ }
+ break ;
+ case ACTIONS(SC10_C_WRAP_B) :
+ smc->mib.p[PA].fddiPORTCurrentPath = MIB_PATH_ISOLATED ;
+ smc->mib.p[PB].fddiPORTCurrentPath = MIB_PATH_CONCATENATED ;
+ smc->mib.p[PA].fddiPORTMACPlacement = 0 ;
+ smc->mib.p[PB].fddiPORTMACPlacement = INDEX_MAC ;
+ smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_CON ;
+ config_mux(smc,MUX_WRAPB) ; /* configure PHY mux */
+ if (smc->y[PB].cf_loop) {
+ smc->r.rm_join = FALSE ;
+ smc->r.rm_loop = TRUE ;
+ queue_event(smc,EVENT_RMT,RM_LOOP) ;/* signal RMT */
+ }
+ if (smc->y[PB].cf_join) {
+ smc->r.rm_loop = FALSE ;
+ smc->r.rm_join = TRUE ;
+ queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
+ }
+ ACTIONS_DONE() ;
+ DB_CFMN(1,"CFM : %s\n",cfm_states[smc->mib.fddiSMTCF_State],0) ;
+ break ;
+ case SC10_C_WRAP_B :
+ /*SC20*/
+ if ( !smc->y[PB].cf_join && !smc->y[PB].cf_loop ) {
+ GO_STATE(SC0_ISOLATED) ;
+ break ;
+ }
+ /*SC21*/
+ else if ( smc->y[PA].cf_loop && smc->y[PA].pc_mode == PM_PEER &&
+ smc->y[PB].cf_join && smc->y[PB].pc_mode == PM_PEER) {
+ smc->y[PB].scrub = TRUE ;
+ GO_STATE(SC9_C_WRAP_A) ;
+ break ;
+ }
+ /*SC24*/
+ else if (!smc->s.attach_s &&
+ smc->y[PA].cf_join && smc->y[PA].pc_mode == PM_PEER &&
+ smc->y[PB].cf_join && smc->y[PB].pc_mode == PM_PEER) {
+ smc->y[PA].scrub = TRUE ;
+ smc->y[PB].scrub = TRUE ;
+ GO_STATE(SC4_THRU_A) ;
+ break ;
+ }
+ /*SC25*/
+ else if ( smc->s.attach_s &&
+ smc->y[PA].cf_join && smc->y[PA].pc_mode == PM_PEER &&
+ smc->y[PB].cf_join && smc->y[PB].pc_mode == PM_PEER) {
+ smc->y[PA].scrub = TRUE ;
+ smc->y[PB].scrub = TRUE ;
+ GO_STATE(SC5_THRU_B) ;
+ break ;
+ }
+ break ;
+ case ACTIONS(SC4_THRU_A) :
+ smc->mib.p[PA].fddiPORTCurrentPath = MIB_PATH_THRU ;
+ smc->mib.p[PB].fddiPORTCurrentPath = MIB_PATH_THRU ;
+ smc->mib.p[PA].fddiPORTMACPlacement = 0 ;
+ smc->mib.p[PB].fddiPORTMACPlacement = INDEX_MAC ;
+ smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_THRU ;
+ config_mux(smc,MUX_THRUA) ; /* configure PHY mux */
+ smc->r.rm_loop = FALSE ;
+ smc->r.rm_join = TRUE ;
+ queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
+ ACTIONS_DONE() ;
+ DB_CFMN(1,"CFM : %s\n",cfm_states[smc->mib.fddiSMTCF_State],0) ;
+ break ;
+ case SC4_THRU_A :
+ /*SC41*/
+ if (smc->y[PB].wc_flag || !smc->y[PB].cf_join) {
+ smc->y[PA].scrub = TRUE ;
+ GO_STATE(SC9_C_WRAP_A) ;
+ break ;
+ }
+ /*SC42*/
+ else if (!smc->y[PA].cf_join || smc->y[PA].wc_flag) {
+ smc->y[PB].scrub = TRUE ;
+ GO_STATE(SC10_C_WRAP_B) ;
+ break ;
+ }
+ /*SC45*/
+ else if (smc->s.attach_s) {
+ smc->y[PB].scrub = TRUE ;
+ GO_STATE(SC5_THRU_B) ;
+ break ;
+ }
+ break ;
+ case ACTIONS(SC5_THRU_B) :
+ smc->mib.p[PA].fddiPORTCurrentPath = MIB_PATH_THRU ;
+ smc->mib.p[PB].fddiPORTCurrentPath = MIB_PATH_THRU ;
+ smc->mib.p[PA].fddiPORTMACPlacement = INDEX_MAC ;
+ smc->mib.p[PB].fddiPORTMACPlacement = 0 ;
+ smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_THRU ;
+ config_mux(smc,MUX_THRUB) ; /* configure PHY mux */
+ smc->r.rm_loop = FALSE ;
+ smc->r.rm_join = TRUE ;
+ queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
+ ACTIONS_DONE() ;
+ DB_CFMN(1,"CFM : %s\n",cfm_states[smc->mib.fddiSMTCF_State],0) ;
+ break ;
+ case SC5_THRU_B :
+ /*SC51*/
+ if (!smc->y[PB].cf_join || smc->y[PB].wc_flag) {
+ smc->y[PA].scrub = TRUE ;
+ GO_STATE(SC9_C_WRAP_A) ;
+ break ;
+ }
+ /*SC52*/
+ else if (!smc->y[PA].cf_join || smc->y[PA].wc_flag) {
+ smc->y[PB].scrub = TRUE ;
+ GO_STATE(SC10_C_WRAP_B) ;
+ break ;
+ }
+ /*SC54*/
+ else if (!smc->s.attach_s) {
+ smc->y[PA].scrub = TRUE ;
+ GO_STATE(SC4_THRU_A) ;
+ break ;
+ }
+ break ;
+ case ACTIONS(SC11_C_WRAP_S) :
+ smc->mib.p[PS].fddiPORTCurrentPath = MIB_PATH_CONCATENATED ;
+ smc->mib.p[PS].fddiPORTMACPlacement = INDEX_MAC ;
+ smc->mib.fddiSMTStationStatus = MIB_SMT_STASTA_CON ;
+ config_mux(smc,MUX_WRAPS) ; /* configure PHY mux */
+ if (smc->y[PA].cf_loop || smc->y[PB].cf_loop) {
+ smc->r.rm_join = FALSE ;
+ smc->r.rm_loop = TRUE ;
+ queue_event(smc,EVENT_RMT,RM_LOOP) ;/* signal RMT */
+ }
+ if (smc->y[PA].cf_join || smc->y[PB].cf_join) {
+ smc->r.rm_loop = FALSE ;
+ smc->r.rm_join = TRUE ;
+ queue_event(smc,EVENT_RMT,RM_JOIN) ;/* signal RMT */
+ }
+ ACTIONS_DONE() ;
+ DB_CFMN(1,"CFM : %s\n",cfm_states[smc->mib.fddiSMTCF_State],0) ;
+ break ;
+ case SC11_C_WRAP_S :
+ /*SC70*/
+ if ( !smc->y[PA].cf_join && !smc->y[PA].cf_loop &&
+ !smc->y[PB].cf_join && !smc->y[PB].cf_loop) {
+ GO_STATE(SC0_ISOLATED) ;
+ break ;
+ }
+ break ;
+ default:
+ SMT_PANIC(smc,SMT_E0106, SMT_E0106_MSG) ;
+ break;
+ }
+}
+
+/*
+ * get MAC's input Port
+ * return :
+ * PA or PB
+ */
+int cfm_get_mac_input(struct s_smc *smc)
+{
+ return((smc->mib.fddiSMTCF_State == SC10_C_WRAP_B ||
+ smc->mib.fddiSMTCF_State == SC5_THRU_B) ? PB : PA) ;
+}
+
+/*
+ * get MAC's output Port
+ * return :
+ * PA or PB
+ */
+int cfm_get_mac_output(struct s_smc *smc)
+{
+ return((smc->mib.fddiSMTCF_State == SC10_C_WRAP_B ||
+ smc->mib.fddiSMTCF_State == SC4_THRU_A) ? PB : PA) ;
+}
+
+static char path_iso[] = {
+ 0,0, 0,RES_PORT, 0,PA + INDEX_PORT, 0,PATH_ISO,
+ 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_ISO,
+ 0,0, 0,RES_PORT, 0,PB + INDEX_PORT, 0,PATH_ISO
+} ;
+
+static char path_wrap_a[] = {
+ 0,0, 0,RES_PORT, 0,PA + INDEX_PORT, 0,PATH_PRIM,
+ 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_PRIM,
+ 0,0, 0,RES_PORT, 0,PB + INDEX_PORT, 0,PATH_ISO
+} ;
+
+static char path_wrap_b[] = {
+ 0,0, 0,RES_PORT, 0,PB + INDEX_PORT, 0,PATH_PRIM,
+ 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_PRIM,
+ 0,0, 0,RES_PORT, 0,PA + INDEX_PORT, 0,PATH_ISO
+} ;
+
+static char path_thru[] = {
+ 0,0, 0,RES_PORT, 0,PA + INDEX_PORT, 0,PATH_PRIM,
+ 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_PRIM,
+ 0,0, 0,RES_PORT, 0,PB + INDEX_PORT, 0,PATH_PRIM
+} ;
+
+static char path_wrap_s[] = {
+ 0,0, 0,RES_PORT, 0,PS + INDEX_PORT, 0,PATH_PRIM,
+ 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_PRIM,
+} ;
+
+static char path_iso_s[] = {
+ 0,0, 0,RES_PORT, 0,PS + INDEX_PORT, 0,PATH_ISO,
+ 0,0, 0,RES_MAC, 0,INDEX_MAC, 0,PATH_ISO,
+} ;
+
+int cem_build_path(struct s_smc *smc, char *to, int path_index)
+{
+ char *path ;
+ int len ;
+
+ switch (smc->mib.fddiSMTCF_State) {
+ default :
+ case SC0_ISOLATED :
+ path = smc->s.sas ? path_iso_s : path_iso ;
+ len = smc->s.sas ? sizeof(path_iso_s) : sizeof(path_iso) ;
+ break ;
+ case SC9_C_WRAP_A :
+ path = path_wrap_a ;
+ len = sizeof(path_wrap_a) ;
+ break ;
+ case SC10_C_WRAP_B :
+ path = path_wrap_b ;
+ len = sizeof(path_wrap_b) ;
+ break ;
+ case SC4_THRU_A :
+ path = path_thru ;
+ len = sizeof(path_thru) ;
+ break ;
+ case SC11_C_WRAP_S :
+ path = path_wrap_s ;
+ len = sizeof(path_wrap_s) ;
+ break ;
+ }
+ memcpy(to,path,len) ;
+
+ LINT_USE(path_index);
+
+ return(len) ;
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.