diff options
author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-07-31 00:06:29 -0700 |
---|---|---|
committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-27 00:58:13 -0700 |
commit | 33f810b2036f13f1b123062a9e5c1794d400ce81 (patch) | |
tree | 370b55026f4bd856e96842f86af631ca2bab3da2 /drivers/net/skfp/pcmplc.c | |
parent | 3cd0999d134235d64b175edd2eb1d46ebc97b377 (diff) |
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>
Diffstat (limited to 'drivers/net/skfp/pcmplc.c')
-rw-r--r-- | drivers/net/skfp/pcmplc.c | 2014 |
1 files changed, 0 insertions, 2014 deletions
diff --git a/drivers/net/skfp/pcmplc.c b/drivers/net/skfp/pcmplc.c deleted file mode 100644 index 88d02d0a42c4..000000000000 --- a/drivers/net/skfp/pcmplc.c +++ /dev/null @@ -1,2014 +0,0 @@ -/****************************************************************************** - * - * (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. - * - ******************************************************************************/ - -/* - PCM - Physical Connection Management -*/ - -/* - * Hardware independent state machine implemantation - * The following external SMT functions are referenced : - * - * queue_event() - * smt_timer_start() - * smt_timer_stop() - * - * The following external HW dependent functions are referenced : - * sm_pm_control() - * sm_ph_linestate() - * sm_pm_ls_latch() - * - * The following HW dependent events are required : - * PC_QLS - * PC_ILS - * PC_HLS - * PC_MLS - * PC_NSE - * PC_LEM - * - */ - - -#include "h/types.h" -#include "h/fddi.h" -#include "h/smc.h" -#include "h/supern_2.h" -#define KERNEL -#include "h/smtstate.h" - -#ifndef lint -static const char ID_sccs[] = "@(#)pcmplc.c 2.55 99/08/05 (C) SK " ; -#endif - -#ifdef FDDI_MIB -extern int snmp_fddi_trap( -#ifdef ANSIC -struct s_smc * smc, int type, int index -#endif -); -#endif -#ifdef CONCENTRATOR -extern int plc_is_installed( -#ifdef ANSIC -struct s_smc *smc , -int p -#endif -) ; -#endif -/* - * FSM Macros - */ -#define AFLAG (0x20) -#define GO_STATE(x) (mib->fddiPORTPCMState = (x)|AFLAG) -#define ACTIONS_DONE() (mib->fddiPORTPCMState &= ~AFLAG) -#define ACTIONS(x) (x|AFLAG) - -/* - * PCM states - */ -#define PC0_OFF 0 -#define PC1_BREAK 1 -#define PC2_TRACE 2 -#define PC3_CONNECT 3 -#define PC4_NEXT 4 -#define PC5_SIGNAL 5 -#define PC6_JOIN 6 -#define PC7_VERIFY 7 -#define PC8_ACTIVE 8 -#define PC9_MAINT 9 - -#ifdef DEBUG -/* - * symbolic state names - */ -static const char * const pcm_states[] = { - "PC0_OFF","PC1_BREAK","PC2_TRACE","PC3_CONNECT","PC4_NEXT", - "PC5_SIGNAL","PC6_JOIN","PC7_VERIFY","PC8_ACTIVE","PC9_MAINT" -} ; - -/* - * symbolic event names - */ -static const char * const pcm_events[] = { - "NONE","PC_START","PC_STOP","PC_LOOP","PC_JOIN","PC_SIGNAL", - "PC_REJECT","PC_MAINT","PC_TRACE","PC_PDR", - "PC_ENABLE","PC_DISABLE", - "PC_QLS","PC_ILS","PC_MLS","PC_HLS","PC_LS_PDR","PC_LS_NONE", - "PC_TIMEOUT_TB_MAX","PC_TIMEOUT_TB_MIN", - "PC_TIMEOUT_C_MIN","PC_TIMEOUT_T_OUT", - "PC_TIMEOUT_TL_MIN","PC_TIMEOUT_T_NEXT","PC_TIMEOUT_LCT", - "PC_NSE","PC_LEM" -} ; -#endif - -#ifdef MOT_ELM -/* - * PCL-S control register - * this register in the PLC-S controls the scrambling parameters - */ -#define PLCS_CONTROL_C_U 0 -#define PLCS_CONTROL_C_S (PL_C_SDOFF_ENABLE | PL_C_SDON_ENABLE | \ - PL_C_CIPHER_ENABLE) -#define PLCS_FASSERT_U 0 -#define PLCS_FASSERT_S 0xFd76 /* 52.0 us */ -#define PLCS_FDEASSERT_U 0 -#define PLCS_FDEASSERT_S 0 -#else /* nMOT_ELM */ -/* - * PCL-S control register - * this register in the PLC-S controls the scrambling parameters - * can be patched for ANSI compliance if standard changes - */ -static const u_char plcs_control_c_u[17] = "PLC_CNTRL_C_U=\0\0" ; -static const u_char plcs_control_c_s[17] = "PLC_CNTRL_C_S=\01\02" ; - -#define PLCS_CONTROL_C_U (plcs_control_c_u[14] | (plcs_control_c_u[15]<<8)) -#define PLCS_CONTROL_C_S (plcs_control_c_s[14] | (plcs_control_c_s[15]<<8)) -#endif /* nMOT_ELM */ - -/* - * external vars - */ -/* struct definition see 'cmtdef.h' (also used by CFM) */ - -#define PS_OFF 0 -#define PS_BIT3 1 -#define PS_BIT4 2 -#define PS_BIT7 3 -#define PS_LCT 4 -#define PS_BIT8 5 -#define PS_JOIN 6 -#define PS_ACTIVE 7 - -#define LCT_LEM_MAX 255 - -/* - * PLC timing parameter - */ - -#define PLC_MS(m) ((int)((0x10000L-(m*100000L/2048)))) -#define SLOW_TL_MIN PLC_MS(6) -#define SLOW_C_MIN PLC_MS(10) - -static const struct plt { - int timer ; /* relative plc timer address */ - int para ; /* default timing parameters */ -} pltm[] = { - { PL_C_MIN, SLOW_C_MIN }, /* min t. to remain Connect State */ - { PL_TL_MIN, SLOW_TL_MIN }, /* min t. to transmit a Line State */ - { PL_TB_MIN, TP_TB_MIN }, /* min break time */ - { PL_T_OUT, TP_T_OUT }, /* Signaling timeout */ - { PL_LC_LENGTH, TP_LC_LENGTH }, /* Link Confidence Test Time */ - { PL_T_SCRUB, TP_T_SCRUB }, /* Scrub Time == MAC TVX time ! */ - { PL_NS_MAX, TP_NS_MAX }, /* max t. that noise is tolerated */ - { 0,0 } -} ; - -/* - * interrupt mask - */ -#ifdef SUPERNET_3 -/* - * Do we need the EBUF error during signaling, too, to detect SUPERNET_3 - * PLL bug? - */ -static const int plc_imsk_na = PL_PCM_CODE | PL_TRACE_PROP | PL_PCM_BREAK | - PL_PCM_ENABLED | PL_SELF_TEST | PL_EBUF_ERR; -#else /* SUPERNET_3 */ -/* - * We do NOT need the elasticity buffer error during signaling. - */ -static int plc_imsk_na = PL_PCM_CODE | PL_TRACE_PROP | PL_PCM_BREAK | - PL_PCM_ENABLED | PL_SELF_TEST ; -#endif /* SUPERNET_3 */ -static const int plc_imsk_act = PL_PCM_CODE | PL_TRACE_PROP | PL_PCM_BREAK | - PL_PCM_ENABLED | PL_SELF_TEST | PL_EBUF_ERR; - -/* internal functions */ -static void pcm_fsm(struct s_smc *smc, struct s_phy *phy, int cmd); -static void pc_rcode_actions(struct s_smc *smc, int bit, struct s_phy *phy); -static void pc_tcode_actions(struct s_smc *smc, const int bit, struct s_phy *phy); -static void reset_lem_struct(struct s_phy *phy); -static void plc_init(struct s_smc *smc, int p); -static void sm_ph_lem_start(struct s_smc *smc, int np, int threshold); -static void sm_ph_lem_stop(struct s_smc *smc, int np); -static void sm_ph_linestate(struct s_smc *smc, int phy, int ls); -static void real_init_plc(struct s_smc *smc); - -/* - * SMT timer interface - * start PCM timer 0 - */ -static void start_pcm_timer0(struct s_smc *smc, u_long value, int event, - struct s_phy *phy) -{ - phy->timer0_exp = FALSE ; /* clear timer event flag */ - smt_timer_start(smc,&phy->pcm_timer0,value, - EV_TOKEN(EVENT_PCM+phy->np,event)) ; -} -/* - * SMT timer interface - * stop PCM timer 0 - */ -static void stop_pcm_timer0(struct s_smc *smc, struct s_phy *phy) -{ - if (phy->pcm_timer0.tm_active) - smt_timer_stop(smc,&phy->pcm_timer0) ; -} - -/* - init PCM state machine (called by driver) - clear all PCM vars and flags -*/ -void pcm_init(struct s_smc *smc) -{ - int i ; - int np ; - struct s_phy *phy ; - struct fddi_mib_p *mib ; - - for (np = 0,phy = smc->y ; np < NUMPHYS ; np++,phy++) { - /* Indicates the type of PHY being used */ - mib = phy->mib ; - mib->fddiPORTPCMState = ACTIONS(PC0_OFF) ; - phy->np = np ; - switch (smc->s.sas) { -#ifdef CONCENTRATOR - case SMT_SAS : - mib->fddiPORTMy_Type = (np == PS) ? TS : TM ; - break ; - case SMT_DAS : - mib->fddiPORTMy_Type = (np == PA) ? TA : - (np == PB) ? TB : TM ; - break ; - case SMT_NAC : - mib->fddiPORTMy_Type = TM ; - break; -#else - case SMT_SAS : - mib->fddiPORTMy_Type = (np == PS) ? TS : TNONE ; - mib->fddiPORTHardwarePresent = (np == PS) ? TRUE : - FALSE ; -#ifndef SUPERNET_3 - smc->y[PA].mib->fddiPORTPCMState = PC0_OFF ; -#else - smc->y[PB].mib->fddiPORTPCMState = PC0_OFF ; -#endif - break ; - case SMT_DAS : - mib->fddiPORTMy_Type = (np == PB) ? TB : TA ; - break ; -#endif - } - /* - * set PMD-type - */ - phy->pmd_scramble = 0 ; - switch (phy->pmd_type[PMD_SK_PMD]) { - case 'P' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_MULTI ; - break ; - case 'L' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_LCF ; - break ; - case 'D' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_TP ; - break ; - case 'S' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_TP ; - phy->pmd_scramble = TRUE ; - break ; - case 'U' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_TP ; - phy->pmd_scramble = TRUE ; - break ; - case '1' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_SINGLE1 ; - break ; - case '2' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_SINGLE2 ; - break ; - case '3' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_SINGLE2 ; - break ; - case '4' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_SINGLE1 ; - break ; - case 'H' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_UNKNOWN ; - break ; - case 'I' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_TP ; - break ; - case 'G' : - mib->fddiPORTPMDClass = MIB_PMDCLASS_TP ; - break ; - default: - mib->fddiPORTPMDClass = MIB_PMDCLASS_UNKNOWN ; - break ; - } - /* - * A and B port can be on primary and secondary path - */ - switch (mib->fddiPORTMy_Type) { - case TA : - mib->fddiPORTAvailablePaths |= MIB_PATH_S ; - mib->fddiPORTRequestedPaths[1] = MIB_P_PATH_LOCAL ; - mib->fddiPORTRequestedPaths[2] = - MIB_P_PATH_LOCAL | - MIB_P_PATH_CON_ALTER | - MIB_P_PATH_SEC_PREFER ; - mib->fddiPORTRequestedPaths[3] = - MIB_P_PATH_LOCAL | - MIB_P_PATH_CON_ALTER | - MIB_P_PATH_SEC_PREFER | - MIB_P_PATH_THRU ; - break ; - case TB : - mib->fddiPORTAvailablePaths |= MIB_PATH_S ; - mib->fddiPORTRequestedPaths[1] = MIB_P_PATH_LOCAL ; - mib->fddiPORTRequestedPaths[2] = - MIB_P_PATH_LOCAL | - MIB_P_PATH_PRIM_PREFER ; - mib->fddiPORTRequestedPaths[3] = - MIB_P_PATH_LOCAL | - MIB_P_PATH_PRIM_PREFER | - MIB_P_PATH_CON_PREFER | - MIB_P_PATH_THRU ; - break ; - case TS : - mib->fddiPORTAvailablePaths |= MIB_PATH_S ; - mib->fddiPORTRequestedPaths[1] = MIB_P_PATH_LOCAL ; - mib->fddiPORTRequestedPaths[2] = - MIB_P_PATH_LOCAL | - MIB_P_PATH_CON_ALTER | - MIB_P_PATH_PRIM_PREFER ; - mib->fddiPORTRequestedPaths[3] = - MIB_P_PATH_LOCAL | - MIB_P_PATH_CON_ALTER | - MIB_P_PATH_PRIM_PREFER ; - break ; - case TM : - mib->fddiPORTRequestedPaths[1] = MIB_P_PATH_LOCAL ; - mib->fddiPORTRequestedPaths[2] = - MIB_P_PATH_LOCAL | - MIB_P_PATH_SEC_ALTER | - MIB_P_PATH_PRIM_ALTER ; - mib->fddiPORTRequestedPaths[3] = 0 ; - break ; - } - - phy->pc_lem_fail = FALSE ; - mib->fddiPORTPCMStateX = mib->fddiPORTPCMState ; - mib->fddiPORTLCTFail_Ct = 0 ; - mib->fddiPORTBS_Flag = 0 ; - mib->fddiPORTCurrentPath = MIB_PATH_ISOLATED ; - mib->fddiPORTNeighborType = TNONE ; - phy->ls_flag = 0 ; - phy->rc_flag = 0 ; - phy->tc_flag = 0 ; - phy->td_flag = 0 ; - if (np >= PM) - phy->phy_name = '0' + np - PM ; - else - phy->phy_name = 'A' + np ; - phy->wc_flag = FALSE ; /* set by SMT */ - memset((char *)&phy->lem,0,sizeof(struct lem_counter)) ; - reset_lem_struct(phy) ; - memset((char *)&phy->plc,0,sizeof(struct s_plc)) ; - phy->plc.p_state = PS_OFF ; - for (i = 0 ; i < NUMBITS ; i++) { - phy->t_next[i] = 0 ; - } - } - real_init_plc(smc) ; -} - -void init_plc(struct s_smc *smc) -{ - SK_UNUSED(smc) ; - - /* - * dummy - * this is an obsolete public entry point that has to remain - * for compat. It is used by various drivers. - * the work is now done in real_init_plc() - * which is called from pcm_init() ; - */ -} - -static void real_init_plc(struct s_smc *smc) -{ - int p ; - - for (p = 0 ; p < NUMPHYS ; p++) - plc_init(smc,p) ; -} - -static void plc_init(struct s_smc *smc, int p) -{ - int i ; -#ifndef MOT_ELM - int rev ; /* Revision of PLC-x */ -#endif /* MOT_ELM */ - - /* transit PCM state machine to MAINT state */ - outpw(PLC(p,PL_CNTRL_B),0) ; - outpw(PLC(p,PL_CNTRL_B),PL_PCM_STOP) ; - outpw(PLC(p,PL_CNTRL_A),0) ; - - /* - * if PLC-S then set control register C - */ -#ifndef MOT_ELM - rev = inpw(PLC(p,PL_STATUS_A)) & PLC_REV_MASK ; - if (rev != PLC_REVISION_A) -#endif /* MOT_ELM */ - { - if (smc->y[p].pmd_scramble) { - outpw(PLC(p,PL_CNTRL_C),PLCS_CONTROL_C_S) ; -#ifdef MOT_ELM - outpw(PLC(p,PL_T_FOT_ASS),PLCS_FASSERT_S) ; - outpw(PLC(p,PL_T_FOT_DEASS),PLCS_FDEASSERT_S) ; -#endif /* MOT_ELM */ - } - else { - outpw(PLC(p,PL_CNTRL_C),PLCS_CONTROL_C_U) ; -#ifdef MOT_ELM - outpw(PLC(p,PL_T_FOT_ASS),PLCS_FASSERT_U) ; - outpw(PLC(p,PL_T_FOT_DEASS),PLCS_FDEASSERT_U) ; -#endif /* MOT_ELM */ - } - } - - /* - * set timer register - */ - for ( i = 0 ; pltm[i].timer; i++) /* set timer parameter reg */ - outpw(PLC(p,pltm[i].timer),pltm[i].para) ; - - (void)inpw(PLC(p,PL_INTR_EVENT)) ; /* clear interrupt event reg */ - plc_clear_irq(smc,p) ; - outpw(PLC(p,PL_INTR_MASK),plc_imsk_na); /* enable non active irq's */ - - /* - * if PCM is configured for class s, it will NOT go to the - * REMOVE state if offline (page 3-36;) - * in the concentrator, all inactive PHYS always must be in - * the remove state - * there's no real need to use this feature at all .. - */ -#ifndef CONCENTRATOR - if ((smc->s.sas == SMT_SAS) && (p == PS)) { - outpw(PLC(p,PL_CNTRL_B),PL_CLASS_S) ; - } -#endif -} - -/* - * control PCM state machine - */ -static void plc_go_state(struct s_smc *smc, int p, int state) -{ - HW_PTR port ; - int val ; - - SK_UNUSED(smc) ; - - port = (HW_PTR) (PLC(p,PL_CNTRL_B)) ; - val = inpw(port) & ~(PL_PCM_CNTRL | PL_MAINT) ; - outpw(port,val) ; - outpw(port,val | state) ; -} - -/* - * read current line state (called by ECM & PCM) - */ -int sm_pm_get_ls(struct s_smc *smc, int phy) -{ - int state ; - -#ifdef CONCENTRATOR - if (!plc_is_installed(smc,phy)) - return PC_QLS; -#endif - - state = inpw(PLC(phy,PL_STATUS_A)) & PL_LINE_ST ; - switch(state) { - case PL_L_QLS: - state = PC_QLS ; - break ; - case PL_L_MLS: - state = PC_MLS ; - break ; - case PL_L_HLS: - state = PC_HLS ; - break ; - case PL_L_ILS4: - case PL_L_ILS16: - state = PC_ILS ; - break ; - case PL_L_ALS: - state = PC_LS_PDR ; - break ; - default : - state = PC_LS_NONE ; - } - return state; -} - -static int plc_send_bits(struct s_smc *smc, struct s_phy *phy, int len) -{ - int np = phy->np ; /* PHY index */ - int n ; - int i ; - - SK_UNUSED(smc) ; - - /* create bit vector */ - for (i = len-1,n = 0 ; i >= 0 ; i--) { - n = (n<<1) | phy->t_val[phy->bitn+i] ; - } - if (inpw(PLC(np,PL_STATUS_B)) & PL_PCM_SIGNAL) { -#if 0 - printf("PL_PCM_SIGNAL is set\n") ; -#endif - return 1; - } - /* write bit[n] & length = 1 to regs */ - outpw(PLC(np,PL_VECTOR_LEN),len-1) ; /* len=nr-1 */ - outpw(PLC(np,PL_XMIT_VECTOR),n) ; -#ifdef DEBUG -#if 1 -#ifdef DEBUG_BRD - if (smc->debug.d_plc & 0x80) -#else - if (debug.d_plc & 0x80) -#endif - printf("SIGNALING bit %d .. %d\n",phy->bitn,phy->bitn+len-1) ; -#endif -#endif - return 0; -} - -/* - * config plc muxes - */ -void plc_config_mux(struct s_smc *smc, int mux) -{ - if (smc->s.sas != SMT_DAS) - return ; - if (mux == MUX_WRAPB) { - SETMASK(PLC(PA,PL_CNTRL_B),PL_CONFIG_CNTRL,PL_CONFIG_CNTRL) ; - SETMASK(PLC(PA,PL_CNTRL_A),PL_SC_REM_LOOP,PL_SC_REM_LOOP) ; - } - else { - CLEAR(PLC(PA,PL_CNTRL_B),PL_CONFIG_CNTRL) ; - CLEAR(PLC(PA,PL_CNTRL_A),PL_SC_REM_LOOP) ; - } - CLEAR(PLC(PB,PL_CNTRL_B),PL_CONFIG_CNTRL) ; - CLEAR(PLC(PB,PL_CNTRL_A),PL_SC_REM_LOOP) ; -} - -/* - PCM state machine - called by dispatcher & fddi_init() (driver) - do - display state change - process event - until SM is stable -*/ -void pcm(struct s_smc *smc, const int np, int event) -{ - int state ; - int oldstate ; - struct s_phy *phy ; - struct fddi_mib_p *mib ; - -#ifndef CONCENTRATOR - /* - * ignore 2nd PHY if SAS - */ - if ((np != PS) && (smc->s.sas == SMT_SAS)) - return ; -#endif - phy = &smc->y[np] ; - mib = phy->mib ; - oldstate = mib->fddiPORTPCMState ; - do { - DB_PCM("PCM %c: state %s", - phy->phy_name, - (mib->fddiPORTPCMState & AFLAG) ? "ACTIONS " : "") ; - DB_PCM("%s, event %s\n", - pcm_states[mib->fddiPORTPCMState & ~AFLAG], - pcm_events[event]) ; - state = mib->fddiPORTPCMState ; - pcm_fsm(smc,phy,event) ; - event = 0 ; - } while (state != mib->fddiPORTPCMState) ; - /* - * because the PLC does the bit signaling for us, - * we're always in SIGNAL state - * the MIB want's to see CONNECT - * we therefore fake an entry in the MIB - */ - if (state == PC5_SIGNAL) - mib->fddiPORTPCMStateX = PC3_CONNECT ; - else - mib->fddiPORTPCMStateX = state ; - -#ifndef SLIM_SMT - /* - * path change - */ - if ( mib->fddiPORTPCMState != oldstate && - ((oldstate == PC8_ACTIVE) || (mib->fddiPORTPCMState == PC8_ACTIVE))) { - smt_srf_event(smc,SMT_EVENT_PORT_PATH_CHANGE, - (int) (INDEX_PORT+ phy->np),0) ; - } -#endif - -#ifdef FDDI_MIB - /* check whether a snmp-trap has to be sent */ - - if ( mib->fddiPORTPCMState != oldstate ) { - /* a real state change took place */ - DB_SNMP ("PCM from %d to %d\n", oldstate, mib->fddiPORTPCMState); - if ( mib->fddiPORTPCMState == PC0_OFF ) { - /* send first trap */ - snmp_fddi_trap (smc, 1, (int) mib->fddiPORTIndex ); - } else if ( oldstate == PC0_OFF ) { - /* send second trap */ - snmp_fddi_trap (smc, 2, (int) mib->fddiPORTIndex ); - } else if ( mib->fddiPORTPCMState != PC2_TRACE && - oldstate == PC8_ACTIVE ) { - /* send third trap */ - snmp_fddi_trap (smc, 3, (int) mib->fddiPORTIndex ); - } else if ( mib->fddiPORTPCMState == PC8_ACTIVE ) { - /* send fourth trap */ - snmp_fddi_trap (smc, 4, (int) mib->fddiPORTIndex ); - } - } -#endif - - pcm_state_change(smc,np,state) ; -} - -/* - * PCM state machine - */ -static void pcm_fsm(struct s_smc *smc, struct s_phy *phy, int cmd) -{ - int i ; - int np = phy->np ; /* PHY index */ - struct s_plc *plc ; - struct fddi_mib_p *mib ; -#ifndef MOT_ELM - u_short plc_rev ; /* Revision of the plc */ -#endif /* nMOT_ELM */ - - plc = &phy->plc ; - mib = phy->mib ; - - /* - * general transitions independent of state - */ - switch (cmd) { - case PC_STOP : - /*PC00-PC80*/ - if (mib->fddiPORTPCMState != PC9_MAINT) { - GO_STATE(PC0_OFF) ; - AIX_EVENT(smc, (u_long) FDDI_RING_STATUS, (u_long) - FDDI_PORT_EVENT, (u_long) FDDI_PORT_STOP, - smt_get_port_event_word(smc)); - } - return ; - case PC_START : - /*PC01-PC81*/ - if (mib->fddiPORTPCMState != PC9_MAINT) - GO_STATE(PC1_BREAK) ; - return ; - case PC_DISABLE : - /* PC09-PC99 */ - GO_STATE(PC9_MAINT) ; - AIX_EVENT(smc, (u_long) FDDI_RING_STATUS, (u_long) - FDDI_PORT_EVENT, (u_long) FDDI_PORT_DISABLED, - smt_get_port_event_word(smc)); - return ; - case PC_TIMEOUT_LCT : - /* if long or extended LCT */ - stop_pcm_timer0(smc,phy) ; - CLEAR(PLC(np,PL_CNTRL_B),PL_LONG) ; - /* end of LCT is indicate by PCM_CODE (initiate PCM event) */ - return ; - } - - switch(mib->fddiPORTPCMState) { - case ACTIONS(PC0_OFF) : - stop_pcm_timer0(smc,phy) ; - outpw(PLC(np,PL_CNTRL_A),0) ; - CLEAR(PLC(np,PL_CNTRL_B),PL_PC_JOIN) ; - CLEAR(PLC(np,PL_CNTRL_B),PL_LONG) ; - sm_ph_lem_stop(smc,np) ; /* disable LEM */ - phy->cf_loop = FALSE ; - phy->cf_join = FALSE ; - queue_event(smc,EVENT_CFM,CF_JOIN+np) ; - plc_go_state(smc,np,PL_PCM_STOP) ; - mib->fddiPORTConnectState = PCM_DISABLED ; - ACTIONS_DONE() ; - break ; - case PC0_OFF: - /*PC09*/ - if (cmd == PC_MAINT) { - GO_STATE(PC9_MAINT) ; - break ; - } - break ; - case ACTIONS(PC1_BREAK) : - /* Stop the LCT timer if we came from Signal state */ - stop_pcm_timer0(smc,phy) ; - ACTIONS_DONE() ; - plc_go_state(smc,np,0) ; - CLEAR(PLC(np,PL_CNTRL_B),PL_PC_JOIN) ; - CLEAR(PLC(np,PL_CNTRL_B),PL_LONG) ; - sm_ph_lem_stop(smc,np) ; /* disable LEM */ - /* - * if vector is already loaded, go to OFF to clear PCM_SIGNAL - */ -#if 0 - if (inpw(PLC(np,PL_STATUS_B)) & PL_PCM_SIGNAL) { - plc_go_state(smc,np,PL_PCM_STOP) ; - /* TB_MIN ? */ - } -#endif - /* - * Go to OFF state in any case. - */ - plc_go_state(smc,np,PL_PCM_STOP) ; - - if (mib->fddiPORTPC_Withhold == PC_WH_NONE) - mib->fddiPORTConnectState = PCM_CONNECTING ; - phy->cf_loop = FALSE ; - phy->cf_join = FALSE ; - queue_event(smc,EVENT_CFM,CF_JOIN+np) ; - phy->ls_flag = FALSE ; - phy->pc_mode = PM_NONE ; /* needed by CFM */ - phy->bitn = 0 ; /* bit signaling start bit */ - for (i = 0 ; i < 3 ; i++) - pc_tcode_actions(smc,i,phy) ; - - /* Set the non-active interrupt mask register */ - outpw(PLC(np,PL_INTR_MASK),plc_imsk_na) ; - - /* - * If the LCT was stopped. There might be a - * PCM_CODE interrupt event present. - * This must be cleared. - */ - (void)inpw(PLC(np,PL_INTR_EVENT)) ; -#ifndef MOT_ELM - /* Get the plc revision for revision dependent code */ - plc_rev = inpw(PLC(np,PL_STATUS_A)) & PLC_REV_MASK ; - - if (plc_rev != PLC_REV_SN3) -#endif /* MOT_ELM */ - { - /* - * No supernet III PLC, so set Xmit verctor and - * length BEFORE starting the state machine. - */ - if (plc_send_bits(smc,phy,3)) { - return ; - } - } - - /* - * Now give the Start command. - * - The start command shall be done before setting the bits - * to be signaled. (In PLC-S description and PLCS in SN3. - * - The start command shall be issued AFTER setting the - * XMIT vector and the XMIT length register. - * - * We do it exactly according this specs for the old PLC and - * the new PLCS inside the SN3. - * For the usual PLCS we try it the way it is done for the - * old PLC and set the XMIT registers again, if the PLC is - * not in SIGNAL state. This is done according to an PLCS - * errata workaround. - */ - - plc_go_state(smc,np,PL_PCM_START) ; - - /* - * workaround for PLC-S eng. sample errata - */ -#ifdef MOT_ELM - if (!(inpw(PLC(np,PL_STATUS_B)) & PL_PCM_SIGNAL)) -#else /* nMOT_ELM */ - if (((inpw(PLC(np,PL_STATUS_A)) & PLC_REV_MASK) != - PLC_REVISION_A) && - !(inpw(PLC(np,PL_STATUS_B)) & PL_PCM_SIGNAL)) -#endif /* nMOT_ELM */ - { - /* - * Set register again (PLCS errata) or the first time - * (new SN3 PLCS). - */ - (void) plc_send_bits(smc,phy,3) ; - } - /* - * end of workaround - */ - - GO_STATE(PC5_SIGNAL) ; - plc->p_state = PS_BIT3 ; - plc->p_bits = 3 ; - plc->p_start = 0 ; - - break ; - case PC1_BREAK : - break ; - case ACTIONS(PC2_TRACE) : - plc_go_state(smc,np,PL_PCM_TRACE) ; - ACTIONS_DONE() ; - break ; - case PC2_TRACE : - break ; - - case PC3_CONNECT : /* these states are done by hardware */ - case PC4_NEXT : - break ; - - case ACTIONS(PC5_SIGNAL) : - ACTIONS_DONE() ; - case PC5_SIGNAL : - if ((cmd != PC_SIGNAL) && (cmd != PC_TIMEOUT_LCT)) - break ; - switch (plc->p_state) { - case PS_BIT3 : - for (i = 0 ; i <= 2 ; i++) - pc_rcode_actions(smc,i,phy) ; - pc_tcode_actions(smc,3,phy) ; - plc->p_state = PS_BIT4 ; - plc->p_bits = 1 ; - plc->p_start = 3 ; - phy->bitn = 3 ; - if (plc_send_bits(smc,phy,1)) { - return ; - } - break ; - case PS_BIT4 : - pc_rcode_actions(smc,3,phy) ; - for (i = 4 ; i <= 6 ; i++) - pc_tcode_actions(smc,i,phy) ; - plc->p_state = PS_BIT7 ; - plc->p_bits = 3 ; - plc->p_start = 4 ; - phy->bitn = 4 ; - if (plc_send_bits(smc,phy,3)) { - return ; - } - break ; - case PS_BIT7 : - for (i = 3 ; i <= 6 ; i++) - pc_rcode_actions(smc,i,phy) ; - plc->p_state = PS_LCT ; - plc->p_bits = 0 ; - plc->p_start = 7 ; - phy->bitn = 7 ; - sm_ph_lem_start(smc,np,(int)smc->s.lct_short) ; /* enable LEM */ - /* start LCT */ - i = inpw(PLC(np,PL_CNTRL_B)) & ~PL_PC_LOOP ; - outpw(PLC(np,PL_CNTRL_B),i) ; /* must be cleared */ - outpw(PLC(np,PL_CNTRL_B),i | PL_RLBP) ; - break ; - case PS_LCT : - /* check for local LCT failure */ - pc_tcode_actions(smc,7,phy) ; - /* - * set tval[7] - */ - plc->p_state = PS_BIT8 ; - plc->p_bits = 1 ; - plc->p_start = 7 ; - phy->bitn = 7 ; - if (plc_send_bits(smc,phy,1)) { - return ; - } - break ; - case PS_BIT8 : - /* check for remote LCT failure */ - pc_rcode_actions(smc,7,phy) ; - if (phy->t_val[7] || phy->r_val[7]) { - plc_go_state(smc,np,PL_PCM_STOP) ; - GO_STATE(PC1_BREAK) ; - break ; - } - for (i = 8 ; i <= 9 ; i++) - pc_tcode_actions(smc,i,phy) ; - plc->p_state = PS_JOIN ; - plc->p_bits = 2 ; - plc->p_start = 8 ; - phy->bitn = 8 ; - if (plc_send_bits(smc,phy,2)) { - return ; - } - break ; - case PS_JOIN : - for (i = 8 ; i <= 9 ; i++) - pc_rcode_actions(smc,i,phy) ; - plc->p_state = PS_ACTIVE ; - GO_STATE(PC6_JOIN) ; - break ; - } - break ; - - case ACTIONS(PC6_JOIN) : - /* - * prevent mux error when going from WRAP_A to WRAP_B - */ - if (smc->s.sas == SMT_DAS && np == PB && - (smc->y[PA].pc_mode == PM_TREE || - smc->y[PB].pc_mode == PM_TREE)) { - SETMASK(PLC(np,PL_CNTRL_A), - PL_SC_REM_LOOP,PL_SC_REM_LOOP) ; - SETMASK(PLC(np,PL_CNTRL_B), - PL_CONFIG_CNTRL,PL_CONFIG_CNTRL) ; - } - SETMASK(PLC(np,PL_CNTRL_B),PL_PC_JOIN,PL_PC_JOIN) ; - SETMASK(PLC(np,PL_CNTRL_B),PL_PC_JOIN,PL_PC_JOIN) ; - ACTIONS_DONE() ; - cmd = 0 ; - /* fall thru */ - case PC6_JOIN : - switch (plc->p_state) { - case PS_ACTIVE: - /*PC88b*/ - if (!phy->cf_join) { - phy->cf_join = TRUE ; - queue_event(smc,EVENT_CFM,CF_JOIN+np) ; - } - if (cmd == PC_JOIN) - GO_STATE(PC8_ACTIVE) ; - /*PC82*/ - if (cmd == PC_TRACE) { - GO_STATE(PC2_TRACE) ; - break ; - } - break ; - } - break ; - - case PC7_VERIFY : - break ; - - case ACTIONS(PC8_ACTIVE) : - /* - * start LEM for SMT - */ - sm_ph_lem_start(smc,(int)phy->np,LCT_LEM_MAX) ; - - phy->tr_flag = FALSE ; - mib->fddiPORTConnectState = PCM_ACTIVE ; - - /* Set the active interrupt mask register */ - outpw(PLC(np,PL_INTR_MASK),plc_imsk_act) ; - - ACTIONS_DONE() ; - break ; - case PC8_ACTIVE : - /*PC81 is done by PL_TNE_EXPIRED irq */ - /*PC82*/ - if (cmd == PC_TRACE) { - GO_STATE(PC2_TRACE) ; - break ; - } - /*PC88c: is done by TRACE_PROP irq */ - - break ; - case ACTIONS(PC9_MAINT) : - stop_pcm_timer0(smc,phy) ; - CLEAR(PLC(np,PL_CNTRL_B),PL_PC_JOIN) ; - CLEAR(PLC(np,PL_CNTRL_B),PL_LONG) ; - CLEAR(PLC(np,PL_INTR_MASK),PL_LE_CTR) ; /* disable LEM int. */ - sm_ph_lem_stop(smc,np) ; /* disable LEM */ - phy->cf_loop = FALSE ; - phy->cf_join = FALSE ; - queue_event(smc,EVENT_CFM,CF_JOIN+np) ; - plc_go_state(smc,np,PL_PCM_STOP) ; - mib->fddiPORTConnectState = PCM_DISABLED ; - SETMASK(PLC(np,PL_CNTRL_B),PL_MAINT,PL_MAINT) ; - sm_ph_linestate(smc,np,(int) MIB2LS(mib->fddiPORTMaint_LS)) ; - outpw(PLC(np,PL_CNTRL_A),PL_SC_BYPASS) ; - ACTIONS_DONE() ; - break ; - case PC9_MAINT : - DB_PCMN(1,"PCM %c : MAINT\n",phy->phy_name,0) ; - /*PC90*/ - if (cmd == PC_ENABLE) { - GO_STATE(PC0_OFF) ; - break ; - } - break ; - - default: - SMT_PANIC(smc,SMT_E0118, SMT_E0118_MSG) ; - break ; - } -} - -/* - * force line state on a PHY output (only in MAINT state) - */ -static void sm_ph_linestate(struct s_smc *smc, int phy, int ls) -{ - int cntrl ; - - SK_UNUSED(smc) ; - - cntrl = (inpw(PLC(phy,PL_CNTRL_B)) & ~PL_MAINT_LS) | - PL_PCM_STOP | PL_MAINT ; - switch(ls) { - case PC_QLS: /* Force Quiet */ - cntrl |= PL_M_QUI0 ; - break ; - case PC_MLS: /* Force Master */ - cntrl |= PL_M_MASTR ; - break ; - case PC_HLS: /* Force Halt */ - cntrl |= PL_M_HALT ; - break ; - default : - case PC_ILS: /* Force Idle */ - cntrl |= PL_M_IDLE ; - break ; - case PC_LS_PDR: /* Enable repeat filter */ - cntrl |= PL_M_TPDR ; - break ; - } - outpw(PLC(phy,PL_CNTRL_B),cntrl) ; -} - -static void reset_lem_struct(struct s_phy *phy) -{ - struct lem_counter *lem = &phy->lem ; - - phy->mib->fddiPORTLer_Estimate = 15 ; - lem->lem_float_ber = 15 * 100 ; -} - -/* - * link error monitor - */ -static void lem_evaluate(struct s_smc *smc, struct s_phy *phy) -{ - int ber ; - u_long errors ; - struct lem_counter *lem = &phy->lem ; - struct fddi_mib_p *mib ; - int cond ; - - mib = phy->mib ; - - if (!lem->lem_on) - return ; - - errors = inpw(PLC(((int) phy->np),PL_LINK_ERR_CTR)) ; - lem->lem_errors += errors ; - mib->fddiPORTLem_Ct += errors ; - - errors = lem->lem_errors ; - /* - * calculation is called on a intervall of 8 seconds - * -> this means, that one error in 8 sec. is one of 8*125*10E6 - * the same as BER = 10E-9 - * Please note: - * -> 9 errors in 8 seconds mean: - * BER = 9 * 10E-9 and this is - * < 10E-8, so the limit of 10E-8 is not reached! - */ - - if (!errors) ber = 15 ; - else if (errors <= 9) ber = 9 ; - else if (errors <= 99) ber = 8 ; - else if (errors <= 999) ber = 7 ; - else if (errors <= 9999) ber = 6 ; - else if (errors <= 99999) ber = 5 ; - else if (errors <= 999999) ber = 4 ; - else if (errors <= 9999999) ber = 3 ; - else if (errors <= 99999999) ber = 2 ; - else if (errors <= 999999999) ber = 1 ; - else ber = 0 ; - - /* - * weighted average - */ - ber *= 100 ; - lem->lem_float_ber = lem->lem_float_ber * 7 + ber * 3 ; - lem->lem_float_ber /= 10 ; - mib->fddiPORTLer_Estimate = lem->lem_float_ber / 100 ; - if (mib->fddiPORTLer_Estimate < 4) { - mib->fddiPORTLer_Estimate = 4 ; - } - - if (lem->lem_errors) { - DB_PCMN(1,"LEM %c :\n",phy->np == PB? 'B' : 'A',0) ; - DB_PCMN(1,"errors : %ld\n",lem->lem_errors,0) ; - DB_PCMN(1,"sum_errors : %ld\n",mib->fddiPORTLem_Ct,0) ; - DB_PCMN(1,"current BER : 10E-%d\n",ber/100,0) ; - DB_PCMN(1,"float BER : 10E-(%d/100)\n",lem->lem_float_ber,0) ; - DB_PCMN(1,"avg. BER : 10E-%d\n", - mib->fddiPORTLer_Estimate,0) ; - } - - lem->lem_errors = 0L ; - -#ifndef SLIM_SMT - cond = (mib->fddiPORTLer_Estimate <= mib->fddiPORTLer_Alarm) ? - TRUE : FALSE ; -#ifdef SMT_EXT_CUTOFF - smt_ler_alarm_check(smc,phy,cond) ; -#endif /* nSMT_EXT_CUTOFF */ - if (cond != mib->fddiPORTLerFlag) { - smt_srf_event(smc,SMT_COND_PORT_LER, - (int) (INDEX_PORT+ phy->np) ,cond) ; - } -#endif - - if ( mib->fddiPORTLer_Estimate <= mib->fddiPORTLer_Cutoff) { - phy->pc_lem_fail = TRUE ; /* flag */ - mib->fddiPORTLem_Reject_Ct++ ; - /* - * "forgive 10e-2" if we cutoff so we can come - * up again .. - */ - lem->lem_float_ber += 2*100 ; - - /*PC81b*/ -#ifdef CONCENTRATOR - DB_PCMN(1,"PCM: LER cutoff on port %d cutoff %d\n", - phy->np, mib->fddiPORTLer_Cutoff) ; -#endif -#ifdef SMT_EXT_CUTOFF - smt_port_off_event(smc,phy->np); -#else /* nSMT_EXT_CUTOFF */ - queue_event(smc,(int)(EVENT_PCM+phy->np),PC_START) ; -#endif /* nSMT_EXT_CUTOFF */ - } -} - -/* - * called by SMT to calculate LEM bit error rate - */ -void sm_lem_evaluate(struct s_smc *smc) -{ - int np ; - - for (np = 0 ; np < NUMPHYS ; np++) - lem_evaluate(smc,&smc->y[np]) ; -} - -static void lem_check_lct(struct s_smc *smc, struct s_phy *phy) -{ - struct lem_counter *lem = &phy->lem ; - struct fddi_mib_p *mib ; - int errors ; - - mib = phy->mib ; - - phy->pc_lem_fail = FALSE ; /* flag */ - errors = inpw(PLC(((int)phy->np),PL_LINK_ERR_CTR)) ; - lem->lem_errors += errors ; - mib->fddiPORTLem_Ct += errors ; - if (lem->lem_errors) { - switch(phy->lc_test) { - case LC_SHORT: - if (lem->lem_errors >= smc->s.lct_short) - phy->pc_lem_fail = TRUE ; - break ; - case LC_MEDIUM: - if (lem->lem_errors >= smc->s.lct_medium) - phy->pc_lem_fail = TRUE ; - break ; - case LC_LONG: - if (lem->lem_errors >= smc->s.lct_long) - phy->pc_lem_fail = TRUE ; - break ; - case LC_EXTENDED: - if (lem->lem_errors >= smc->s.lct_extended) - phy->pc_lem_fail = TRUE ; - break ; - } - DB_PCMN(1," >>errors : %d\n",lem->lem_errors,0) ; - } - if (phy->pc_lem_fail) { - mib->fddiPORTLCTFail_Ct++ ; - mib->fddiPORTLem_Reject_Ct++ ; - } - else - mib->fddiPORTLCTFail_Ct = 0 ; -} - -/* - * LEM functions - */ -static void sm_ph_lem_start(struct s_smc *smc, int np, int threshold) -{ - struct lem_counter *lem = &smc->y[np].lem ; - - lem->lem_on = 1 ; - lem->lem_errors = 0L ; - - /* Do NOT reset mib->fddiPORTLer_Estimate here. It is called too - * often. - */ - - outpw(PLC(np,PL_LE_THRESHOLD),threshold) ; - (void)inpw(PLC(np,PL_LINK_ERR_CTR)) ; /* clear error counter */ - - /* enable LE INT */ - SETMASK(PLC(np,PL_INTR_MASK),PL_LE_CTR,PL_LE_CTR) ; -} - -static void sm_ph_lem_stop(struct s_smc *smc, int np) -{ - struct lem_counter *lem = &smc->y[np].lem ; - - lem->lem_on = 0 ; - CLEAR(PLC(np,PL_INTR_MASK),PL_LE_CTR) ; -} - -/* ARGSUSED */ -void sm_pm_ls_latch(struct s_smc *smc, int phy, int on_off) -/* int on_off; en- or disable ident. ls */ -{ - SK_UNUSED(smc) ; - - phy = phy ; on_off = on_off ; -} - - -/* - * PCM pseudo code - * receive actions are called AFTER the bit n is received, - * i.e. if pc_rcode_actions(5) is called, bit 6 is the next bit to be received - */ - -/* - * PCM pseudo code 5.1 .. 6.1 - */ -static void pc_rcode_actions(struct s_smc *smc, int bit, struct s_phy *phy) -{ - struct fddi_mib_p *mib ; - - mib = phy->mib ; - - DB_PCMN(1,"SIG rec %x %x:\n", bit,phy->r_val[bit] ) ; - bit++ ; - - switch(bit) { - case 0: - case 1: - case 2: - break ; - case 3 : - if (phy->r_val[1] == 0 && phy->r_val[2] == 0) - mib->fddiPORTNeighborType = TA ; - else if (phy->r_val[1] == 0 && phy->r_val[2] == 1) - mib->fddiPORTNeighborType = TB ; - else if (phy->r_val[1] == 1 && phy->r_val[2] == 0) - mib->fddiPORTNeighborType = TS ; - else if (phy->r_val[1] == 1 && phy->r_val[2] == 1) - mib->fddiPORTNeighborType = TM ; - break ; - case 4: - if (mib->fddiPORTMy_Type == TM && - mib->fddiPORTNeighborType == TM) { - DB_PCMN(1,"PCM %c : E100 withhold M-M\n", - phy->phy_name,0) ; - mib->fddiPORTPC_Withhold = PC_WH_M_M ; - RS_SET(smc,RS_EVENT) ; - } - else if (phy->t_val[3] || phy->r_val[3]) { - mib->fddiPORTPC_Withhold = PC_WH_NONE ; - if (mib->fddiPORTMy_Type == TM || - mib->fddiPORTNeighborType == TM) - phy->pc_mode = PM_TREE ; - else - phy->pc_mode = PM_PEER ; - - /* reevaluate the selection criteria (wc_flag) */ - all_selection_criteria (smc); - - if (phy->wc_flag) { - mib->fddiPORTPC_Withhold = PC_WH_PATH ; - } - } - else { - mib->fddiPORTPC_Withhold = PC_WH_OTHER ; - RS_SET(smc,RS_EVENT) ; - DB_PCMN(1,"PCM %c : E101 withhold other\n", - phy->phy_name,0) ; - } - phy->twisted = ((mib->fddiPORTMy_Type != TS) && - (mib->fddiPORTMy_Type != TM) && - (mib->fddiPORTNeighborType == - mib->fddiPORTMy_Type)) ; - if (phy->twisted) { - DB_PCMN(1,"PCM %c : E102 !!! TWISTED !!!\n", - phy->phy_name,0) ; - } - break ; - case 5 : - break ; - case 6: - if (phy->t_val[4] || phy->r_val[4]) { - if ((phy->t_val[4] && phy->t_val[5]) || - (phy->r_val[4] && phy->r_val[5]) ) - phy->lc_test = LC_EXTENDED ; - else - phy->lc_test = LC_LONG ; - } - else if (phy->t_val[5] || phy->r_val[5]) - phy->lc_test = LC_MEDIUM ; - else - phy->lc_test = LC_SHORT ; - switch (phy->lc_test) { - case LC_SHORT : /* 50ms */ - outpw(PLC((int)phy->np,PL_LC_LENGTH), TP_LC_LENGTH ) ; - phy->t_next[7] = smc->s.pcm_lc_short ; - break ; - case LC_MEDIUM : /* 500ms */ - outpw(PLC((int)phy->np,PL_LC_LENGTH), TP_LC_LONGLN ) ; - phy->t_next[7] = smc->s.pcm_lc_medium ; - break ; - case LC_LONG : - SETMASK(PLC((int)phy->np,PL_CNTRL_B),PL_LONG,PL_LONG) ; - phy->t_next[7] = smc->s.pcm_lc_long ; - break ; - case LC_EXTENDED : - SETMASK(PLC((int)phy->np,PL_CNTRL_B),PL_LONG,PL_LONG) ; - phy->t_next[7] = smc->s.pcm_lc_extended ; - break ; - } - if (phy->t_next[7] > smc->s.pcm_lc_medium) { - start_pcm_timer0(smc,phy->t_next[7],PC_TIMEOUT_LCT,phy); - } - DB_PCMN(1,"LCT timer = %ld us\n", phy->t_next[7], 0) ; - phy->t_next[9] = smc->s.pcm_t_next_9 ; - break ; - case 7: - if (phy->t_val[6]) { - phy->cf_loop = TRUE ; - } - phy->td_flag = TRUE ; - break ; - case 8: - if (phy->t_val[7] || phy->r_val[7]) { - DB_PCMN(1,"PCM %c : E103 LCT fail %s\n", - phy->phy_name,phy->t_val[7]? "local":"remote") ; - queue_event(smc,(int)(EVENT_PCM+phy->np),PC_START) ; - } - break ; - case 9: - if (phy->t_val[8] || phy->r_val[8]) { - if (phy->t_val[8]) - phy->cf_loop = TRUE ; - phy->td_flag = TRUE ; - } - break ; - case 10: - if (phy->r_val[9]) { - /* neighbor intends to have MAC on output */ ; - mib->fddiPORTMacIndicated.R_val = TRUE ; - } - else { - /* neighbor does not intend to have MAC on output */ ; - mib->fddiPORTMacIndicated.R_val = FALSE ; - } - break ; - } -} - -/* - * PCM pseudo code 5.1 .. 6.1 - */ -static void pc_tcode_actions(struct s_smc *smc, const int bit, struct s_phy *phy) -{ - int np = phy->np ; - struct fddi_mib_p *mib ; - - mib = phy->mib ; - - switch(bit) { - case 0: - phy->t_val[0] = 0 ; /* no escape used */ - break ; - case 1: - if (mib->fddiPORTMy_Type == TS || mib->fddiPORTMy_Type == TM) - phy->t_val[1] = 1 ; - else - phy->t_val[1] = 0 ; - break ; - case 2 : - if (mib->fddiPORTMy_Type == TB || mib->fddiPORTMy_Type == TM) - phy->t_val[2] = 1 ; - else - phy->t_val[2] = 0 ; - break ; - case 3: - { - int type,ne ; - int policy ; - - type = mib->fddiPORTMy_Type ; - ne = mib->fddiPORTNeighborType ; - policy = smc->mib.fddiSMTConnectionPolicy ; - - phy->t_val[3] = 1 ; /* Accept connection */ - switch (type) { - case TA : - if ( - ((policy & POLICY_AA) && ne == TA) || - ((policy & POLICY_AB) && ne == TB) || - ((policy & POLICY_AS) && ne == TS) || - ((policy & POLICY_AM) && ne == TM) ) - phy->t_val[3] = 0 ; /* Reject */ - break ; - case TB : - if ( - ((policy & POLICY_BA) && ne == TA) || - ((policy & POLICY_BB) && ne == TB) || - ((policy & POLICY_BS) && ne == TS) || - ((policy & POLICY_BM) && ne == TM) ) - phy->t_val[3] = 0 ; /* Reject */ - break ; - case TS : - if ( - ((policy & POLICY_SA) && ne == TA) || - ((policy & POLICY_SB) && ne == TB) || - ((policy & POLICY_SS) && ne == TS) || - ((policy & POLICY_SM) && ne == TM) ) - phy->t_val[3] = 0 ; /* Reject */ - break ; - case TM : - if ( ne == TM || - ((policy & POLICY_MA) && ne == TA) || - ((policy & POLICY_MB) && ne == TB) || - ((policy & POLICY_MS) && ne == TS) || - ((policy & POLICY_MM) && ne == TM) ) - phy->t_val[3] = 0 ; /* Reject */ - break ; - } -#ifndef SLIM_SMT - /* - * detect undesirable connection attempt event - */ - if ( (type == TA && ne == TA ) || - (type == TA && ne == TS ) || - (type == TB && ne == TB ) || - (type == TB && ne == TS ) || - (type == TS && ne == TA ) || - (type == TS && ne == TB ) ) { - smt_srf_event(smc,SMT_EVENT_PORT_CONNECTION, - (int) (INDEX_PORT+ phy->np) ,0) ; - } -#endif - } - break ; - case 4: - if (mib->fddiPORTPC_Withhold == PC_WH_NONE) { - if (phy->pc_lem_fail) { - phy->t_val[4] = 1 ; /* long */ - phy->t_val[5] = 0 ; - } - else { - phy->t_val[4] = 0 ; - if (mib->fddiPORTLCTFail_Ct > 0) - phy->t_val[5] = 1 ; /* medium */ - else - phy->t_val[5] = 0 ; /* short */ - - /* - * Implementers choice: use medium - * instead of short when undesired - * connection attempt is made. - */ - if (phy->wc_flag) - phy->t_val[5] = 1 ; /* medium */ - } - mib->fddiPORTConnectState = PCM_CONNECTING ; - } - else { - mib->fddiPORTConnectState = PCM_STANDBY ; - phy->t_val[4] = 1 ; /* extended */ - phy->t_val[5] = 1 ; - } - break ; - case 5: - break ; - case 6: - /* we do NOT have a MAC for LCT */ - phy->t_val[6] = 0 ; - break ; - case 7: - phy->cf_loop = FALSE ; - lem_check_lct(smc,phy) ; - if (phy->pc_lem_fail) { - DB_PCMN(1,"PCM %c : E104 LCT failed\n", - phy->phy_name,0) ; - phy->t_val[7] = 1 ; - } - else - phy->t_val[7] = 0 ; - break ; - case 8: - phy->t_val[8] = 0 ; /* Don't request MAC loopback */ - break ; - case 9: - phy->cf_loop = 0 ; - if ((mib->fddiPORTPC_Withhold != PC_WH_NONE) || - ((smc->s.sas == SMT_DAS) && (phy->wc_flag))) { - queue_event(smc,EVENT_PCM+np,PC_START) ; - break ; - } - phy->t_val[9] = FALSE ; - switch (smc->s.sas) { - case SMT_DAS : - /* - * MAC intended on output - */ - if (phy->pc_mode == PM_TREE) { - if ((np == PB) || ((np == PA) && - (smc->y[PB].mib->fddiPORTConnectState != - PCM_ACTIVE))) - phy->t_val[9] = TRUE ; - } - else { - if (np == PB) - phy->t_val[9] = TRUE ; - } - break ; - case SMT_SAS : - if (np == PS) - phy->t_val[9] = TRUE ; - break ; -#ifdef CONCENTRATOR - case SMT_NAC : - /* - * MAC intended on output - */ - if (np == PB) - phy->t_val[9] = TRUE ; - break ; -#endif - } - mib->fddiPORTMacIndicated.T_val = phy->t_val[9] ; - break ; - } - DB_PCMN(1,"SIG snd %x %x:\n", bit,phy->t_val[bit] ) ; -} - -/* - * return status twisted (called by SMT) - */ -int pcm_status_twisted(struct s_smc *smc) -{ - int twist = 0 ; - if (smc->s.sas != SMT_DAS) - return 0; - if (smc->y[PA].twisted && (smc->y[PA].mib->fddiPORTPCMState == PC8_ACTIVE)) - twist |= 1 ; - if (smc->y[PB].twisted && (smc->y[PB].mib->fddiPORTPCMState == PC8_ACTIVE)) - twist |= 2 ; - return twist; -} - -/* - * return status (called by SMT) - * type - * state - * remote phy type - * remote mac yes/no - */ -void pcm_status_state(struct s_smc *smc, int np, int *type, int *state, - int *remote, int *mac) -{ - struct s_phy *phy = &smc->y[np] ; - struct fddi_mib_p *mib ; - - mib = phy->mib ; - - /* remote PHY type and MAC - set only if active */ - *mac = 0 ; - *type = mib->fddiPORTMy_Type ; /* our PHY type */ - *state = mib->fddiPORTConnectState ; - *remote = mib->fddiPORTNeighborType ; - - switch(mib->fddiPORTPCMState) { - case PC8_ACTIVE : - *mac = mib->fddiPORTMacIndicated.R_val ; - break ; - } -} - -/* - * return rooted station status (called by SMT) - */ -int pcm_rooted_station(struct s_smc *smc) -{ - int n ; - - for (n = 0 ; n < NUMPHYS ; n++) { - if (smc->y[n].mib->fddiPORTPCMState == PC8_ACTIVE && - smc->y[n].mib->fddiPORTNeighborType == TM) - return 0; - } - return 1; -} - -/* - * Interrupt actions for PLC & PCM events - */ -void plc_irq(struct s_smc *smc, int np, unsigned int cmd) -/* int np; PHY index */ -{ - struct s_phy *phy = &smc->y[np] ; - struct s_plc *plc = &phy->plc ; - int n ; -#ifdef SUPERNET_3 - int corr_mask ; -#endif /* SUPERNET_3 */ - int i ; - - if (np >= smc->s.numphys) { - plc->soft_err++ ; - return ; - } - if (cmd & PL_EBUF_ERR) { /* elastic buff. det. over-|underflow*/ - /* - * Check whether the SRF Condition occurred. - */ - if (!plc->ebuf_cont && phy->mib->fddiPORTPCMState == PC8_ACTIVE){ - /* - * This is the real Elasticity Error. - * More than one in a row are treated as a - * single one. - * Only count this in the active state. - */ - phy->mib->fddiPORTEBError_Ct ++ ; - - } - - plc->ebuf_err++ ; - if (plc->ebuf_cont <= 1000) { - /* - * Prevent counter from being wrapped after - * hanging years in that interrupt. - */ - plc->ebuf_cont++ ; /* Ebuf continuous error */ - } - -#ifdef SUPERNET_3 - if (plc->ebuf_cont == 1000 && - ((inpw(PLC(np,PL_STATUS_A)) & PLC_REV_MASK) == - PLC_REV_SN3)) { - /* - * This interrupt remeained high for at least - * 1000 consecutive interrupt calls. - * - * This is caused by a hardware error of the - * ORION part of the Supernet III chipset. - * - * Disable this bit from the mask. - */ - corr_mask = (plc_imsk_na & ~PL_EBUF_ERR) ; - outpw(PLC(np,PL_INTR_MASK),corr_mask); - - /* - * Disconnect from the ring. - * Call the driver with the reset indication. - */ - queue_event(smc,EVENT_ECM,EC_DISCONNECT) ; - - /* - * Make an error log entry. - */ - SMT_ERR_LOG(smc,SMT_E0136, SMT_E0136_MSG) ; - - /* - * Indicate the Reset. - */ - drv_reset_indication(smc) ; - } -#endif /* SUPERNET_3 */ - } else { - /* Reset the continuous error variable */ - plc->ebuf_cont = 0 ; /* reset Ebuf continuous error */ - } - if (cmd & PL_PHYINV) { /* physical layer invalid signal */ - plc->phyinv++ ; - } - if (cmd & PL_VSYM_CTR) { /* violation symbol counter has incr.*/ - plc->vsym_ctr++ ; - } - if (cmd & PL_MINI_CTR) { /* dep. on PLC_CNTRL_A's MINI_CTR_INT*/ - plc->mini_ctr++ ; - } - if (cmd & PL_LE_CTR) { /* link error event counter */ - int j ; - - /* - * note: PL_LINK_ERR_CTR MUST be read to clear it - */ - j = inpw(PLC(np,PL_LE_THRESHOLD)) ; - i = inpw(PLC(np,PL_LINK_ERR_CTR)) ; - - if (i < j) { - /* wrapped around */ - i += 256 ; - } - - if (phy->lem.lem_on) { - /* Note: Lem errors shall only be counted when - * link is ACTIVE or LCT is active. - */ - phy->lem.lem_errors += i ; - phy->mib->fddiPORTLem_Ct += i ; - } - } - if (cmd & PL_TPC_EXPIRED) { /* TPC timer reached zero */ - if (plc->p_state == PS_LCT) { - /* - * end of LCT - */ - ; - } - plc->tpc_exp++ ; - } - if (cmd & PL_LS_MATCH) { /* LS == LS in PLC_CNTRL_B's MATCH_LS*/ - switch (inpw(PLC(np,PL_CNTRL_B)) & PL_MATCH_LS) { - case PL_I_IDLE : phy->curr_ls = PC_ILS ; break ; - case PL_I_HALT : phy->curr_ls = PC_HLS ; break ; - case PL_I_MASTR : phy->curr_ls = PC_MLS ; break ; - case PL_I_QUIET : phy->curr_ls = PC_QLS ; break ; - } - } - if (cmd & PL_PCM_BREAK) { /* PCM has entered the BREAK state */ - int reason; - - reason = inpw(PLC(np,PL_STATUS_B)) & PL_BREAK_REASON ; - - switch (reason) { - case PL_B_PCS : plc->b_pcs++ ; break ; - case PL_B_TPC : plc->b_tpc++ ; break ; - case PL_B_TNE : plc->b_tne++ ; break ; - case PL_B_QLS : plc->b_qls++ ; break ; - case PL_B_ILS : plc->b_ils++ ; break ; - case PL_B_HLS : plc->b_hls++ ; break ; - } - - /*jd 05-Aug-1999 changed: Bug #10419 */ - DB_PCMN(1,"PLC %d: MDcF = %x\n", np, smc->e.DisconnectFlag); - if (smc->e.DisconnectFlag == FALSE) { - DB_PCMN(1,"PLC %d: restart (reason %x)\n", np, reason); - queue_event(smc,EVENT_PCM+np,PC_START) ; - } - else { - DB_PCMN(1,"PLC %d: NO!! restart (reason %x)\n", np, reason); - } - return ; - } - /* - * If both CODE & ENABLE are set ignore enable - */ - if (cmd & PL_PCM_CODE) { /* receive last sign.-bit | LCT complete */ - queue_event(smc,EVENT_PCM+np,PC_SIGNAL) ; - n = inpw(PLC(np,PL_RCV_VECTOR)) ; - for (i = 0 ; i < plc->p_bits ; i++) { - phy->r_val[plc->p_start+i] = n & 1 ; - n >>= 1 ; - } - } - else if (cmd & PL_PCM_ENABLED) { /* asserted SC_JOIN, scrub.completed*/ - queue_event(smc,EVENT_PCM+np,PC_JOIN) ; - } - if (cmd & PL_TRACE_PROP) { /* MLS while PC8_ACTIV || PC2_TRACE */ - /*PC22b*/ - if (!phy->tr_flag) { - DB_PCMN(1,"PCM : irq TRACE_PROP %d %d\n", - np,smc->mib.fddiSMTECMState) ; - phy->tr_flag = TRUE ; - smc->e.trace_prop |= ENTITY_BIT(ENTITY_PHY(np)) ; - queue_event(smc,EVENT_ECM,EC_TRACE_PROP) ; - } - } - /* - * filter PLC glitch ??? - * QLS || HLS only while in PC2_TRACE state - */ - if ((cmd & PL_SELF_TEST) && (phy->mib->fddiPORTPCMState == PC2_TRACE)) { - /*PC22a*/ - if (smc->e.path_test == PT_PASSED) { - DB_PCMN(1,"PCM : state = %s %d\n", get_pcmstate(smc,np), - phy->mib->fddiPORTPCMState) ; - - smc->e.path_test = PT_PENDING ; - queue_event(smc,EVENT_ECM,EC_PATH_TEST) ; - } - } - if (cmd & PL_TNE_EXPIRED) { /* TNE: length of noise events */ - /* break_required (TNE > NS_Max) */ - if (phy->mib->fddiPORTPCMState == PC8_ACTIVE) { - if (!phy->tr_flag) { - DB_PCMN(1,"PCM %c : PC81 %s\n",phy->phy_name,"NSE"); - queue_event(smc,EVENT_PCM+np,PC_START) ; - return ; - } - } - } -#if 0 - if (cmd & PL_NP_ERR) { /* NP has requested to r/w an inv reg*/ - /* - * It's a bug by AMD - */ - plc->np_err++ ; - } - /* pin inactiv (GND) */ - if (cmd & PL_PARITY_ERR) { /* p. error dedected on TX9-0 inp */ - plc->parity_err++ ; - } - if (cmd & PL_LSDO) { /* carrier detected */ - ; - } -#endif -} - -#ifdef DEBUG -/* - * fill state struct - */ -void pcm_get_state(struct s_smc *smc, struct smt_state *state) -{ - struct s_phy *phy ; - struct pcm_state *pcs ; - int i ; - int ii ; - short rbits ; - short tbits ; - struct fddi_mib_p *mib ; - - for (i = 0, phy = smc->y, pcs = state->pcm_state ; i < NUMPHYS ; - i++ , phy++, pcs++ ) { - mib = phy->mib ; - pcs->pcm_type = (u_char) mib->fddiPORTMy_Type ; - pcs->pcm_state = (u_char) mib->fddiPORTPCMState ; - pcs->pcm_mode = phy->pc_mode ; - pcs->pcm_neighbor = (u_char) mib->fddiPORTNeighborType ; - pcs->pcm_bsf = mib->fddiPORTBS_Flag ; - pcs->pcm_lsf = phy->ls_flag ; - pcs->pcm_lct_fail = (u_char) mib->fddiPORTLCTFail_Ct ; - pcs->pcm_ls_rx = LS2MIB(sm_pm_get_ls(smc,i)) ; - for (ii = 0, rbits = tbits = 0 ; ii < NUMBITS ; ii++) { - rbits <<= 1 ; - tbits <<= 1 ; - if (phy->r_val[NUMBITS-1-ii]) - rbits |= 1 ; - if (phy->t_val[NUMBITS-1-ii]) - tbits |= 1 ; - } - pcs->pcm_r_val = rbits ; - pcs->pcm_t_val = tbits ; - } -} - -int get_pcm_state(struct s_smc *smc, int np) -{ - int pcs ; - - SK_UNUSED(smc) ; - - switch (inpw(PLC(np,PL_STATUS_B)) & PL_PCM_STATE) { - case PL_PC0 : pcs = PC_STOP ; break ; - case PL_PC1 : pcs = PC_START ; break ; - case PL_PC2 : pcs = PC_TRACE ; break ; - case PL_PC3 : pcs = PC_SIGNAL ; break ; - case PL_PC4 : pcs = PC_SIGNAL ; break ; - case PL_PC5 : pcs = PC_SIGNAL ; break ; - case PL_PC6 : pcs = PC_JOIN ; break ; - case PL_PC7 : pcs = PC_JOIN ; break ; - case PL_PC8 : pcs = PC_ENABLE ; break ; - case PL_PC9 : pcs = PC_MAINT ; break ; - default : pcs = PC_DISABLE ; break ; - } - return pcs; -} - -char *get_linestate(struct s_smc *smc, int np) -{ - char *ls = "" ; - - SK_UNUSED(smc) ; - - switch (inpw(PLC(np,PL_STATUS_A)) & PL_LINE_ST) { - case PL_L_NLS : ls = "NOISE" ; break ; - case PL_L_ALS : ls = "ACTIV" ; break ; - case PL_L_UND : ls = "UNDEF" ; break ; - case PL_L_ILS4: ls = "ILS 4" ; break ; - case PL_L_QLS : ls = "QLS" ; break ; - case PL_L_MLS : ls = "MLS" ; break ; - case PL_L_HLS : ls = "HLS" ; break ; - case PL_L_ILS16:ls = "ILS16" ; break ; -#ifdef lint - default: ls = "unknown" ; break ; -#endif - } - return ls; -} - -char *get_pcmstate(struct s_smc *smc, int np) -{ - char *pcs ; - - SK_UNUSED(smc) ; - - switch (inpw(PLC(np,PL_STATUS_B)) & PL_PCM_STATE) { - case PL_PC0 : pcs = "OFF" ; break ; - case PL_PC1 : pcs = "BREAK" ; break ; - case PL_PC2 : pcs = "TRACE" ; break ; - case PL_PC3 : pcs = "CONNECT"; break ; - case PL_PC4 : pcs = "NEXT" ; break ; - case PL_PC5 : pcs = "SIGNAL" ; break ; - case PL_PC6 : pcs = "JOIN" ; break ; - case PL_PC7 : pcs = "VERIFY" ; break ; - case PL_PC8 : pcs = "ACTIV" ; break ; - case PL_PC9 : pcs = "MAINT" ; break ; - default : pcs = "UNKNOWN" ; break ; - } - return pcs; -} - -void list_phy(struct s_smc *smc) -{ - struct s_plc *plc ; - int np ; - - for (np = 0 ; np < NUMPHYS ; np++) { - plc = &smc->y[np].plc ; - printf("PHY %d:\tERRORS\t\t\tBREAK_REASONS\t\tSTATES:\n",np) ; - printf("\tsoft_error: %ld \t\tPC_Start : %ld\n", - plc->soft_err,plc->b_pcs); - printf("\tparity_err: %ld \t\tTPC exp. : %ld\t\tLine: %s\n", - plc->parity_err,plc->b_tpc,get_linestate(smc,np)) ; - printf("\tebuf_error: %ld \t\tTNE exp. : %ld\n", - plc->ebuf_err,plc->b_tne) ; - printf("\tphyinvalid: %ld \t\tQLS det. : %ld\t\tPCM : %s\n", - plc->phyinv,plc->b_qls,get_pcmstate(smc,np)) ; - printf("\tviosym_ctr: %ld \t\tILS det. : %ld\n", - plc->vsym_ctr,plc->b_ils) ; - printf("\tmingap_ctr: %ld \t\tHLS det. : %ld\n", - plc->mini_ctr,plc->b_hls) ; - printf("\tnodepr_err: %ld\n",plc->np_err) ; - printf("\tTPC_exp : %ld\n",plc->tpc_exp) ; - printf("\tLEM_err : %ld\n",smc->y[np].lem.lem_errors) ; - } -} - - -#ifdef CONCENTRATOR -void pcm_lem_dump(struct s_smc *smc) -{ - int i ; - struct s_phy *phy ; - struct fddi_mib_p *mib ; - - char *entostring() ; - - printf("PHY errors BER\n") ; - printf("----------------------\n") ; - for (i = 0,phy = smc->y ; i < NUMPHYS ; i++,phy++) { - if (!plc_is_installed(smc,i)) - continue ; - mib = phy->mib ; - printf("%s\t%ld\t10E-%d\n", - entostring(smc,ENTITY_PHY(i)), - mib->fddiPORTLem_Ct, - mib->fddiPORTLer_Estimate) ; - } -} -#endif -#endif |