/******************************************************************************
 *
 *	(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.
 *
 ******************************************************************************/

/*
	IBM FDDI read error log function
*/

#include "h/types.h"
#include "h/fddi.h"
#include "h/smc.h"
#include "h/lnkstat.h"

#ifndef	lint
static const char ID_sccs[] = "@(#)lnkstat.c	1.8 97/04/11 (C) SK " ;
#endif

#ifdef	sun
#define _far
#endif

#define EL_IS_OK(x,l)	((((int)&(((struct s_error_log *)0)->x)) + \
			sizeof(er->x)) <= l)

/*
	BEGIN_MANUAL_ENTRY(if,func;others;11)

	u_long smt_get_error_word(smc)
	struct s_smc *smc ;

Function	DOWNCALL	(SMT, lnkstat.c)
		This functions returns the SMT error work for AIX events.

Return	smt_error_word	These bits are supported:

		SMT_ERL_ALC	== 	[PS/PA].fddiPORTLerFlag
		SMT_ERL_BLC	==	[PB].fddiPORTLerFlag
		SMT_ERL_NCC	==	fddiMACNotCopiedFlag
		SMT_ERL_FEC	==	fddiMACFrameErrorFlag

	END_MANUAL_ENTRY()
 */
u_long smt_get_error_word(struct s_smc *smc)
{
	u_long	st;

	/*
	 * smt error word low
	 */
	st = 0 ;
	if (smc->s.sas == SMT_SAS) {
		if (smc->mib.p[PS].fddiPORTLerFlag)
			st |= SMT_ERL_ALC ;
	}
	else {
		if (smc->mib.p[PA].fddiPORTLerFlag)
			st |= SMT_ERL_ALC ;
		if (smc->mib.p[PB].fddiPORTLerFlag)
			st |= SMT_ERL_BLC ;
	}
	if (smc->mib.m[MAC0].fddiMACNotCopiedFlag)
		st |= SMT_ERL_NCC ;		/* not copied condition */
	if (smc->mib.m[MAC0].fddiMACFrameErrorFlag)
		st |= SMT_ERL_FEC ;		/* frame error condition */

	return st;
}

/*
	BEGIN_MANUAL_ENTRY(if,func;others;11)

	u_long smt_get_event_word(smc)
	struct s_smc *smc ;

Function	DOWNCALL	(SMT, lnkstat.c)
		This functions returns the SMT event work for AIX events.

Return	smt_event_word	always 0

	END_MANUAL_ENTRY()
 */
u_long smt_get_event_word(struct s_smc *smc)
{
	return (u_long) 0;
}

/*
	BEGIN_MANUAL_ENTRY(if,func;others;11)

	u_long smt_get_port_event_word(smc)
	struct s_smc *smc ;

Function	DOWNCALL	(SMT, lnkstat.c)
		This functions returns the SMT port event work for AIX events.

Return	smt_port_event_word	always 0

	END_MANUAL_ENTRY()
 */
u_long smt_get_port_event_word(struct s_smc *smc)
{
	return (u_long) 0;
}

/*
	BEGIN_MANUAL_ENTRY(if,func;others;11)

	u_long smt_read_errorlog(smc,p,len)
	struct s_smc *smc ;
	char _far *p ;
	int len ;

Function	DOWNCALL	(SMT, lnkstat.c)
		This functions returns the SMT error log field for AIX events.

Para	p	pointer to the error log field
	len	len of the error log field

Return	len	used len of the error log field

	END_MANUAL_ENTRY()
 */
int smt_read_errorlog(struct s_smc *smc, char _far *p, int len)
{
	int			i ;
	int			st ;
	struct s_error_log _far	*er ;

	er = (struct s_error_log _far *) p ;
	if (len > sizeof(struct s_error_log))
		len = sizeof(struct s_error_log) ;
	for (i = 0 ; i < len ; i++)
		*p++ = 0 ;
	/*
	 * set count
	 */
	if (EL_IS_OK(set_count_high,len)) {
		er->set_count_low = (u_short)smc->mib.fddiSMTSetCount.count ;
		er->set_count_high =
			(u_short)(smc->mib.fddiSMTSetCount.count >> 16L) ;
	}
	/*
	 * aci
	 */
	if (EL_IS_OK(aci_id_code,len)) {
		er->aci_id_code = 0 ;
	}
	/*
	 * purge counter is missed frames; 16 bits only
	 */
	if (EL_IS_OK(purge_frame_counter,len)) {
		if (smc->mib.m[MAC0].fddiMACCopied_Ct > 0xffff)
			er->purge_frame_counter = 0xffff ;
		else
			er->purge_frame_counter =
				(u_short)smc->mib.m[MAC0].fddiMACCopied_Ct ;
	}
	/*
	 * CMT and RMT state machines
	 */
	if (EL_IS_OK(ecm_state,len))
		er->ecm_state = smc->mib.fddiSMTECMState ;

	if (EL_IS_OK(pcm_b_state,len)) {
		if (smc->s.sas == SMT_SAS) {
			er->pcm_a_state = smc->y[PS].mib->fddiPORTPCMState ;
			er->pcm_b_state = 0 ;
		}
		else {
			er->pcm_a_state = smc->y[PA].mib->fddiPORTPCMState ;
			er->pcm_b_state = smc->y[PB].mib->fddiPORTPCMState ;
		}
	}
	if (EL_IS_OK(cfm_state,len))
		er->cfm_state = smc->mib.fddiSMTCF_State ;
	if (EL_IS_OK(rmt_state,len))
		er->rmt_state = smc->mib.m[MAC0].fddiMACRMTState ;

	/*
	 * smt error word low (we only need the low order 16 bits.)
	 */

	st = smt_get_error_word(smc) & 0xffff ;

	if (EL_IS_OK(smt_error_low,len))
		er->smt_error_low = st ;

	if (EL_IS_OK(ucode_version_level,len))
		er->ucode_version_level = 0x0101 ;
	return(len) ;
}