skgesirq.c

linux-2.6.15.6

#endif /* DEBUG */

	if ((PhySpecStat & PHY_M_PS_LINK_UP) == 0) {
		return(SK_HW_PS_NONE);
	}
	
	if ((PhySpecStat & PHY_M_PS_DOWNS_STAT) != 0 ||
		(PhyIsrc & PHY_M_IS_DOWNSH_DET) != 0) {
		/* Downshift detected */
		SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E025, SKERR_SIRQ_E025MSG);
		
		Para.Para64 = Port;
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_DOWNSHIFT_DET, Para);
		
		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
			("Downshift detected, PhyIsrc: 0x%04X\n", PhyIsrc));
	}

	pPrt->PMSStatus = ((ResAb & PHY_B_1000S_MSR) != 0) ?
		SK_MS_STAT_MASTER : SK_MS_STAT_SLAVE;
	
	pPrt->PCableLen = (SK_U8)((PhySpecStat & PHY_M_PS_CABLE_MSK) >> 7);
	
	if (AutoNeg) {
		/* Auto-Negotiation Over ? */
		if ((PhyStat & PHY_ST_AN_OVER) != 0) {
			
			SkHWLinkUp(pAC, IoC, Port);
			
			Done = SkMacAutoNegDone(pAC, IoC, Port);
			
			if (Done != SK_AND_OK) {
				return(SK_HW_PS_RESTART);
			}
			
			return(SK_HW_PS_LINK);
		}
	}
	else {	/* !AutoNeg */
		/* Link is up and we don't need more */
#ifdef DEBUG
		if (pPrt->PLipaAutoNeg == SK_LIPA_AUTO) {
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("ERROR: Lipa auto detected on port %d\n", Port));
		}
#endif /* DEBUG */

		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
			("Link sync, Port %d\n", Port));
		SkHWLinkUp(pAC, IoC, Port);
		
		return(SK_HW_PS_LINK);
	}

	return(SK_HW_PS_NONE);
}	/* SkGePortCheckUpGmac */
#endif /* YUKON */


#ifdef OTHER_PHY
/******************************************************************************
 *
 * SkGePortCheckUpLone() - Check if the link is up on Level One PHY
 *
 * return:
 *	0	o.k. nothing needed
 *	1	Restart needed on this port
 *	2	Link came up
 */
static int SkGePortCheckUpLone(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* IO Context */
int		Port,		/* Which port should be checked */
SK_BOOL	AutoNeg)	/* Is Auto-negotiation used ? */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	int			Done;
	SK_U16		Isrc;		/* Interrupt source register */
	SK_U16		LpAb;		/* Link Partner Ability */
	SK_U16		ExtStat;	/* Extended Status Register */
	SK_U16		PhyStat;	/* Phy Status Register */
	SK_U16		StatSum;
	SK_U8		NextMode;	/* Next AutoSensing Mode */

	pPrt = &pAC->GIni.GP[Port];

	if (pPrt->PHWLinkUp) {
		return(SK_HW_PS_NONE);
	}

	StatSum = pPrt->PIsave;
	pPrt->PIsave = 0;

	/*
	 * here we usually can check whether the link is in sync and
	 * auto-negotiation is done.
	 */
	SkXmPhyRead(pAC, IoC, Port, PHY_LONE_STAT, &PhyStat);
	StatSum |= PhyStat;

	SkMacAutoNegLipaPhy(pAC, IoC, Port, PhyStat);
	
	if ((PhyStat & PHY_ST_LSYNC) == 0) {
		/* Save Auto-negotiation Done bit */
		pPrt->PIsave = (SK_U16)(StatSum & PHY_ST_AN_OVER);
#ifdef DEBUG
		if ((pPrt->PIsave & PHY_ST_AN_OVER) != 0) {
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("AutoNeg done rescheduled Port %d\n", Port));
		}
#endif /* DEBUG */
		return(SK_HW_PS_NONE);
	}

	if (AutoNeg) {
		if ((StatSum & PHY_ST_AN_OVER) != 0) {
			SkHWLinkUp(pAC, IoC, Port);
			Done = SkMacAutoNegDone(pAC, IoC, Port);
			if (Done != SK_AND_OK) {
				/* Get PHY parameters, for debugging only */
				SkXmPhyRead(pAC, IoC, Port, PHY_LONE_AUNE_LP, &LpAb);
				SkXmPhyRead(pAC, IoC, Port, PHY_LONE_1000T_STAT, &ExtStat);
				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
					("AutoNeg FAIL Port %d (LpAb %x, 1000TStat %x)\n",
					 Port, LpAb, ExtStat));
					
				/* Try next possible mode */
				NextMode = SkHWSenseGetNext(pAC, IoC, Port);
				SkHWLinkDown(pAC, IoC, Port);
				if (Done == SK_AND_DUP_CAP) {
					/* GoTo next mode */
					SkHWSenseSetNext(pAC, IoC, Port, NextMode);
				}

				return(SK_HW_PS_RESTART);

			}
			else {
				/*
				 * Dummy Read interrupt status to prevent
				 * extra link down/ups
				 */
				SkXmPhyRead(pAC, IoC, Port, PHY_LONE_INT_STAT, &ExtStat);
				return(SK_HW_PS_LINK);
			}
		}
		
		/* AutoNeg not done, but HW link is up. Check for timeouts */
		pPrt->PAutoNegTimeOut++;
		if (pPrt->PAutoNegTimeOut >= SK_AND_MAX_TO) {
			/* Timeout occured */
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
				("AutoNeg timeout Port %d\n", Port));
			if (pPrt->PLinkModeConf == SK_LMODE_AUTOSENSE &&
				pPrt->PLipaAutoNeg != SK_LIPA_AUTO) {
				/* Set Link manually up */
				SkHWSenseSetNext(pAC, IoC, Port, SK_LMODE_FULL);
				SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
					("Set manual full duplex Port %d\n", Port));
			}

			/* Do the restart */
			return(SK_HW_PS_RESTART);
		}
	}
	else {
		/* Link is up and we don't need more */
#ifdef DEBUG
		if (pPrt->PLipaAutoNeg == SK_LIPA_AUTO) {
			SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
				("ERROR: Lipa auto detected on port %d\n", Port));
		}
#endif /* DEBUG */

		/*
		 * Dummy Read interrupt status to prevent
		 * extra link down/ups
		 */
		SkXmPhyRead(pAC, IoC, Port, PHY_LONE_INT_STAT, &ExtStat);
		
		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_IRQ,
			("Link sync(GP), Port %d\n", Port));
		SkHWLinkUp(pAC, IoC, Port);
		
		return(SK_HW_PS_LINK);
	}

	return(SK_HW_PS_NONE);
}	/* SkGePortCheckUpLone */


/******************************************************************************
 *
 * SkGePortCheckUpNat() - Check if the link is up on National PHY
 *
 * return:
 *	0	o.k. nothing needed
 *	1	Restart needed on this port
 *	2	Link came up
 */
static int SkGePortCheckUpNat(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* IO Context */
int		Port,		/* Which port should be checked */
SK_BOOL	AutoNeg)	/* Is Auto-negotiation used ? */
{
	/* todo: National */
	return(SK_HW_PS_NONE);
}	/* SkGePortCheckUpNat */
#endif /* OTHER_PHY */


/******************************************************************************
 *
 *	SkGeSirqEvent() - Event Service Routine
 *
 * Description:
 *
 * Notes:
 */
int	SkGeSirqEvent(
SK_AC		*pAC,		/* Adapter Context */
SK_IOC		IoC,		/* Io Context */
SK_U32		Event,		/* Module specific Event */
SK_EVPARA	Para)		/* Event specific Parameter */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	SK_U32		Port;
	SK_U32		Val32;
	int			PortStat;
	SK_U8		Val8;
#ifdef GENESIS
	SK_U64		Octets;
#endif /* GENESIS */

	Port = Para.Para32[0];
	pPrt = &pAC->GIni.GP[Port];

	switch (Event) {
	case SK_HWEV_WATIM:
		if (pPrt->PState == SK_PRT_RESET) {
		
			PortStat = SK_HW_PS_NONE;
		}
		else {
			/* Check whether port came up */
			PortStat = SkGePortCheckUp(pAC, IoC, (int)Port);
		}

		switch (PortStat) {
		case SK_HW_PS_RESTART:
			if (pPrt->PHWLinkUp) {
				/* Set Link to down */
				SkHWLinkDown(pAC, IoC, (int)Port);

				/*
				 * Signal directly to RLMT to ensure correct
				 * sequence of SWITCH and RESET event.
				 */
				SkRlmtEvent(pAC, IoC, SK_RLMT_LINK_DOWN, Para);
			}

			/* Restart needed */
			SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_RESET, Para);
			break;

		case SK_HW_PS_LINK:
			/* Signal to RLMT */
			SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_UP, Para);
			break;
		}
		
		/* Start again the check Timer */
		if (pPrt->PHWLinkUp) {
			Val32 = SK_WA_ACT_TIME;
		}
		else {
			Val32 = SK_WA_INA_TIME;
		}

		/* Todo: still needed for non-XMAC PHYs??? */
		/* Start workaround Errata #2 timer */
		SkTimerStart(pAC, IoC, &pPrt->PWaTimer, Val32,
			SKGE_HWAC, SK_HWEV_WATIM, Para);
		break;

	case SK_HWEV_PORT_START:
		if (pPrt->PHWLinkUp) {
			/*
			 * Signal directly to RLMT to ensure correct
			 * sequence of SWITCH and RESET event.
			 */
			SkRlmtEvent(pAC, IoC, SK_RLMT_LINK_DOWN, Para);
		}

		SkHWLinkDown(pAC, IoC, (int)Port);

		/* Schedule Port RESET */
		SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_RESET, Para);

		/* Start workaround Errata #2 timer */
		SkTimerStart(pAC, IoC, &pPrt->PWaTimer, SK_WA_INA_TIME,
			SKGE_HWAC, SK_HWEV_WATIM, Para);
		break;

	case SK_HWEV_PORT_STOP:
		if (pPrt->PHWLinkUp) {
			/*
			 * Signal directly to RLMT to ensure correct
			 * sequence of SWITCH and RESET event.
			 */
			SkRlmtEvent(pAC, IoC, SK_RLMT_LINK_DOWN, Para);
		}

		/* Stop Workaround Timer */
		SkTimerStop(pAC, IoC, &pPrt->PWaTimer);

		SkHWLinkDown(pAC, IoC, (int)Port);
		break;

	case SK_HWEV_UPDATE_STAT:
		/* We do NOT need to update any statistics */
		break;

	case SK_HWEV_CLEAR_STAT:
		/* We do NOT need to clear any statistics */
		for (Port = 0; Port < (SK_U32)pAC->GIni.GIMacsFound; Port++) {
			pPrt->PPrevRx = 0;
			pPrt->PPrevFcs = 0;
			pPrt->PPrevShorts = 0;
		}
		break;

	case SK_HWEV_SET_LMODE:
		Val8 = (SK_U8)Para.Para32[1];
		if (pPrt->PLinkModeConf != Val8) {
			/* Set New link mode */
			pPrt->PLinkModeConf = Val8;

			/* Restart Port */
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_STOP, Para);
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_START, Para);
		}
		break;

	case SK_HWEV_SET_FLOWMODE:
		Val8 = (SK_U8)Para.Para32[1];
		if (pPrt->PFlowCtrlMode != Val8) {
			/* Set New Flow Control mode */
			pPrt->PFlowCtrlMode = Val8;

			/* Restart Port */
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_STOP, Para);
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_START, Para);
		}
		break;

	case SK_HWEV_SET_ROLE:
		/* not possible for fiber */
		if (!pAC->GIni.GICopperType) {
			break;
		}
		Val8 = (SK_U8)Para.Para32[1];
		if (pPrt->PMSMode != Val8) {
			/* Set New Role (Master/Slave) mode */
			pPrt->PMSMode = Val8;

			/* Restart Port */
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_STOP, Para);
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_START, Para);
		}
		break;

	case SK_HWEV_SET_SPEED:
		if (pPrt->PhyType != SK_PHY_MARV_COPPER) {
			break;
		}
		Val8 = (SK_U8)Para.Para32[1];
		if (pPrt->PLinkSpeed != Val8) {
			/* Set New Speed parameter */
			pPrt->PLinkSpeed = Val8;

			/* Restart Port */
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_STOP, Para);
			SkEventQueue(pAC, SKGE_HWAC, SK_HWEV_PORT_START, Para);
		}
		break;

#ifdef GENESIS
	case SK_HWEV_HALFDUP_CHK:
		if (pAC->GIni.GIGenesis) {
			/*
			 * half duplex hangup workaround.
			 * See packet arbiter timeout interrupt for description
			 */
			pPrt->HalfDupTimerActive = SK_FALSE;
			if (pPrt->PLinkModeStatus == SK_LMODE_STAT_HALF ||
				pPrt->PLinkModeStatus == SK_LMODE_STAT_AUTOHALF) {
#ifdef XXX
				Len = sizeof(SK_U64);
				SkPnmiGetVar(pAC, IoC, OID_SKGE_STAT_TX_OCTETS, (char *)&Octets,
					&Len, (SK_U32)SK_PNMI_PORT_PHYS2INST(pAC, Port),
					pAC->Rlmt.Port[Port].Net->NetNumber);
#endif /* XXX */
				/* Snap statistic counters */
				(void)SkXmUpdateStats(pAC, IoC, Port);

				(void)SkXmMacStatistic(pAC, IoC, Port, XM_TXO_OK_HI, &Val32);

				Octets = (SK_U64)Val32 << 32;
				
				(void)SkXmMacStatistic(pAC, IoC, Port, XM_TXO_OK_LO, &Val32);

				Octets += Val32;
				
				if (pPrt->LastOctets == Octets) {
					/* Tx hanging, a FIFO flush restarts it */
					SkMacFlushTxFifo(pAC, IoC, Port);
				}
			}
		}
		break;
#endif /* GENESIS */
	
	default:
		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_SIRQ_E001, SKERR_SIRQ_E001MSG);
		break;
	}

	return(0);
}	/* SkGeSirqEvent */


#ifdef GENESIS
/******************************************************************************
 *
 *	SkPhyIsrBcom() - PHY interrupt service routine
 *
 * Description: handles all interrupts from BCom PHY
 *
 * Returns: N/A
 */
static void SkPhyIsrBcom(
SK_AC		*pAC,		/* Adapter Context */
SK_IOC		IoC,		/* Io Context */
int			Port,		/* Port Num = PHY Num */
SK_U16		IStatus)	/* Interrupt Status */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	SK_EVPARA	Para;

	pPrt = &pAC->GIni.GP[Port];

	if ((IStatus & PHY_B_IS_PSE) != 0) {
		/* Incorrectable pair swap error */
		SK_ERR_LOG(pAC, SK_ERRCL_HW | SK_ERRCL_INIT, SKERR_SIRQ_E022,
			SKERR_SIRQ_E022MSG);
	}
	
	if ((IStatus & (PHY_B_IS_AN_PR | PHY_B_IS_LST_CHANGE)) != 0) {

		SkHWLinkDown(pAC, IoC, Port);

		Para.Para32[0] = (SK_U32)Port;
		/* Signal to RLMT */
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);

		/* Start workaround Errata #2 timer */
		SkTimerStart(pAC, IoC, &pPrt->PWaTimer, SK_WA_INA_TIME,
			SKGE_HWAC, SK_HWEV_WATIM, Para);
	}

}	/* SkPhyIsrBcom */
#endif /* GENESIS */


#ifdef YUKON
/******************************************************************************
 *
 *	SkPhyIsrGmac() - PHY interrupt service routine
 *
 * Description: handles all interrupts from Marvell PHY
 *
 * Returns: N/A
 */
static void SkPhyIsrGmac(
SK_AC		*pAC,		/* Adapter Context */
SK_IOC		IoC,		/* Io Context */
int			Port,		/* Port Num = PHY Num */
SK_U16		IStatus)	/* Interrupt Status */
{
	SK_GEPORT	*pPrt;		/* GIni Port struct pointer */
	SK_EVPARA	Para;
	SK_U16		Word;

	pPrt = &pAC->GIni.GP[Port];

	if ((IStatus & (PHY_M_IS_AN_PR | PHY_M_IS_LST_CHANGE)) != 0) {

		SkHWLinkDown(pAC, IoC, Port);

		SkGmPhyRead(pAC, IoC, Port, PHY_MARV_AUNE_ADV, &Word);

		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_CTRL,
			("AutoNeg.Adv: 0x%04X\n", Word));
		
		/* Set Auto-negotiation advertisement */
		if (pPrt->PFlowCtrlMode == SK_FLOW_MODE_SYM_OR_REM) {
			/* restore Asymmetric Pause bit */
			SkGmPhyWrite(pAC, IoC, Port, PHY_MARV_AUNE_ADV,
				(SK_U16)(Word | PHY_M_AN_ASP));
		}
		
		Para.Para32[0] = (SK_U32)Port;
		/* Signal to RLMT */
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}
	
	if ((IStatus & PHY_M_IS_AN_ERROR) != 0) {
		/* Auto-Negotiation Error */
		SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E023, SKERR_SIRQ_E023MSG);
	}
	
	if ((IStatus & PHY_M_IS_FIFO_ERROR) != 0) {
		/* FIFO Overflow/Underrun Error */
		SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_SIRQ_E024, SKERR_SIRQ_E024MSG);
	}
	
}	/* SkPhyIsrGmac */
#endif /* YUKON */


#ifdef OTHER_PHY
/******************************************************************************
 *
 *	SkPhyIsrLone() - PHY interrupt service routine
 *
 * Description: handles all interrupts from LONE PHY
 *
 * Returns: N/A
 */
static void SkPhyIsrLone(
SK_AC	*pAC,		/* Adapter Context */
SK_IOC	IoC,		/* Io Context */
int		Port,		/* Port Num = PHY Num */
SK_U16	IStatus)	/* Interrupt Status */
{
	SK_EVPARA	Para;

	if (IStatus & (PHY_L_IS_DUP | PHY_L_IS_ISOL)) {
		
		SkHWLinkDown(pAC, IoC, Port);

		Para.Para32[0] = (SK_U32)Port;
		/* Signal to RLMT */
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_LINK_DOWN, Para);
	}

}	/* SkPhyIsrLone */
#endif /* OTHER_PHY */

/* End of File */