sk98lin: resurrect driver

This reverts commit e1abecc48938fbe1966ea6e78267fc673fa59295.

The driver works on some hardware that skge doesn't handle yet.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 2005 insertions, 0 deletions

diff --git a/drivers/net/sk98lin/skgeinit.c b/drivers/net/sk98lin/skgeinit.c
new file mode 100644
index 000000000000..67f1d6a5c15d
--- /dev/null
+++ b/drivers/net/sk98lin/skgeinit.c
@@ -0,0 +1,2005 @@
+/******************************************************************************
+ *
+ * Name:	skgeinit.c
+ * Project:	Gigabit Ethernet Adapters, Common Modules
+ * Version:	$Revision: 1.97 $
+ * Date:	$Date: 2003/10/02 16:45:31 $
+ * Purpose:	Contains functions to initialize the adapter
+ *
+ ******************************************************************************/
+
+/******************************************************************************
+ *
+ *	(C)Copyright 1998-2002 SysKonnect.
+ *	(C)Copyright 2002-2003 Marvell.
+ *
+ *	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.
+ *
+ ******************************************************************************/
+
+#include "h/skdrv1st.h"
+#include "h/skdrv2nd.h"
+
+/* global variables ***********************************************************/
+
+/* local variables ************************************************************/
+
+#if (defined(DEBUG) || ((!defined(LINT)) && (!defined(SK_SLIM))))
+static const char SysKonnectFileId[] =
+	"@(#) $Id: skgeinit.c,v 1.97 2003/10/02 16:45:31 rschmidt Exp $ (C) Marvell.";
+#endif
+
+struct s_QOffTab {
+	int	RxQOff;		/* Receive Queue Address Offset */
+	int	XsQOff;		/* Sync Tx Queue Address Offset */
+	int	XaQOff;		/* Async Tx Queue Address Offset */
+};
+static struct s_QOffTab QOffTab[] = {
+	{Q_R1, Q_XS1, Q_XA1}, {Q_R2, Q_XS2, Q_XA2}
+};
+
+struct s_Config {
+	char	ScanString[8];
+	SK_U32	Value;
+};
+
+static struct s_Config OemConfig = {
+	{'O','E','M','_','C','o','n','f'},
+#ifdef SK_OEM_CONFIG
+	OEM_CONFIG_VALUE,
+#else
+	0,
+#endif
+};
+
+/******************************************************************************
+ *
+ *	SkGePollTxD() - Enable / Disable Descriptor Polling of TxD Rings
+ *
+ * Description:
+ *	Enable or disable the descriptor polling of the transmit descriptor
+ *	ring(s) (TxD) for port 'Port'.
+ *	The new configuration is *not* saved over any SkGeStopPort() and
+ *	SkGeInitPort() calls.
+ *
+ * Returns:
+ *	nothing
+ */
+void SkGePollTxD(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC,		/* IO context */
+int		Port,		/* Port Index (MAC_1 + n) */
+SK_BOOL PollTxD)	/* SK_TRUE (enable pol.), SK_FALSE (disable pol.) */
+{
+	SK_GEPORT *pPrt;
+	SK_U32	DWord;
+
+	pPrt = &pAC->GIni.GP[Port];
+
+	DWord = (SK_U32)(PollTxD ? CSR_ENA_POL : CSR_DIS_POL);
+
+	if (pPrt->PXSQSize != 0) {
+		SK_OUT32(IoC, Q_ADDR(pPrt->PXsQOff, Q_CSR), DWord);
+	}
+	
+	if (pPrt->PXAQSize != 0) {
+		SK_OUT32(IoC, Q_ADDR(pPrt->PXaQOff, Q_CSR), DWord);
+	}
+}	/* SkGePollTxD */
+
+
+/******************************************************************************
+ *
+ *	SkGeYellowLED() - Switch the yellow LED on or off.
+ *
+ * Description:
+ *	Switch the yellow LED on or off.
+ *
+ * Note:
+ *	This function may be called any time after SkGeInit(Level 1).
+ *
+ * Returns:
+ *	nothing
+ */
+void SkGeYellowLED(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC,		/* IO context */
+int		State)		/* yellow LED state, 0 = OFF, 0 != ON */
+{
+	if (State == 0) {
+		/* Switch yellow LED OFF */
+		SK_OUT8(IoC, B0_LED, LED_STAT_OFF);
+	}
+	else {
+		/* Switch yellow LED ON */
+		SK_OUT8(IoC, B0_LED, LED_STAT_ON);
+	}
+}	/* SkGeYellowLED */
+
+
+#if (!defined(SK_SLIM) || defined(GENESIS))
+/******************************************************************************
+ *
+ *	SkGeXmitLED() - Modify the Operational Mode of a transmission LED.
+ *
+ * Description:
+ *	The Rx or Tx LED which is specified by 'Led' will be
+ *	enabled, disabled or switched on in test mode.
+ *
+ * Note:
+ *	'Led' must contain the address offset of the LEDs INI register.
+ *
+ * Usage:
+ *	SkGeXmitLED(pAC, IoC, MR_ADDR(Port, TX_LED_INI), SK_LED_ENA);
+ *
+ * Returns:
+ *	nothing
+ */
+void SkGeXmitLED(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC,		/* IO context */
+int		Led,		/* offset to the LED Init Value register */
+int		Mode)		/* Mode may be SK_LED_DIS, SK_LED_ENA, SK_LED_TST */
+{
+	SK_U32	LedIni;
+
+	switch (Mode) {
+	case SK_LED_ENA:
+		LedIni = SK_XMIT_DUR * (SK_U32)pAC->GIni.GIHstClkFact / 100;
+		SK_OUT32(IoC, Led + XMIT_LED_INI, LedIni);
+		SK_OUT8(IoC, Led + XMIT_LED_CTRL, LED_START);
+		break;
+	case SK_LED_TST:
+		SK_OUT8(IoC, Led + XMIT_LED_TST, LED_T_ON);
+		SK_OUT32(IoC, Led + XMIT_LED_CNT, 100);
+		SK_OUT8(IoC, Led + XMIT_LED_CTRL, LED_START);
+		break;
+	case SK_LED_DIS:
+	default:
+		/*
+		 * Do NOT stop the LED Timer here. The LED might be
+		 * in on state. But it needs to go off.
+		 */
+		SK_OUT32(IoC, Led + XMIT_LED_CNT, 0);
+		SK_OUT8(IoC, Led + XMIT_LED_TST, LED_T_OFF);
+		break;
+	}
+			
+	/*
+	 * 1000BT: The Transmit LED is driven by the PHY.
+	 * But the default LED configuration is used for
+	 * Level One and Broadcom PHYs.
+	 * (Broadcom: It may be that PHY_B_PEC_EN_LTR has to be set.)
+	 * (In this case it has to be added here. But we will see. XXX)
+	 */
+}	/* SkGeXmitLED */
+#endif	/* !SK_SLIM || GENESIS */
+
+
+/******************************************************************************
+ *
+ *	DoCalcAddr() - Calculates the start and the end address of a queue.
+ *
+ * Description:
+ *	This function calculates the start and the end address of a queue.
+ *  Afterwards the 'StartVal' is incremented to the next start position.
+ *	If the port is already initialized the calculated values
+ *	will be checked against the configured values and an
+ *	error will be returned, if they are not equal.
+ *	If the port is not initialized the values will be written to
+ *	*StartAdr and *EndAddr.
+ *
+ * Returns:
+ *	0:	success
+ *	1:	configuration error
+ */
+static int DoCalcAddr(
+SK_AC		*pAC, 				/* adapter context */
+SK_GEPORT	SK_FAR *pPrt,		/* port index */
+int			QuSize,				/* size of the queue to configure in kB */
+SK_U32		SK_FAR *StartVal,	/* start value for address calculation */
+SK_U32		SK_FAR *QuStartAddr,/* start addr to calculate */
+SK_U32		SK_FAR *QuEndAddr)	/* end address to calculate */
+{
+	SK_U32	EndVal;
+	SK_U32	NextStart;
+	int		Rtv;
+
+	Rtv = 0;
+	if (QuSize == 0) {
+		EndVal = *StartVal;
+		NextStart = EndVal;
+	}
+	else {
+		EndVal = *StartVal + ((SK_U32)QuSize * 1024) - 1;
+		NextStart = EndVal + 1;
+	}
+
+	if (pPrt->PState >= SK_PRT_INIT) {
+		if (*StartVal != *QuStartAddr || EndVal != *QuEndAddr) {
+			Rtv = 1;
+		}
+	}
+	else {
+		*QuStartAddr = *StartVal;
+		*QuEndAddr = EndVal;
+	}
+
+	*StartVal = NextStart;
+	return(Rtv);
+}	/* DoCalcAddr */
+
+/******************************************************************************
+ *
+ *	SkGeInitAssignRamToQueues() - allocate default queue sizes
+ *
+ * Description:
+ *	This function assigns the memory to the different queues and ports.
+ *	When DualNet is set to SK_TRUE all ports get the same amount of memory.
+ *  Otherwise the first port gets most of the memory and all the
+ *	other ports just the required minimum.
+ *	This function can only be called when pAC->GIni.GIRamSize and
+ *	pAC->GIni.GIMacsFound have been initialized, usually this happens
+ *	at init level 1
+ *
+ * Returns:
+ *	0 - ok
+ *	1 - invalid input values
+ *	2 - not enough memory
+ */
+
+int SkGeInitAssignRamToQueues(
+SK_AC	*pAC,			/* Adapter context */
+int		ActivePort,		/* Active Port in RLMT mode */
+SK_BOOL	DualNet)		/* adapter context */
+{
+	int	i;
+	int	UsedKilobytes;			/* memory already assigned */
+	int	ActivePortKilobytes;	/* memory available for active port */
+	SK_GEPORT *pGePort;
+
+	UsedKilobytes = 0;
+
+	if (ActivePort >= pAC->GIni.GIMacsFound) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_INIT,
+			("SkGeInitAssignRamToQueues: ActivePort (%d) invalid\n",
+			ActivePort));
+		return(1);
+	}
+	if (((pAC->GIni.GIMacsFound * (SK_MIN_RXQ_SIZE + SK_MIN_TXQ_SIZE)) +
+		((RAM_QUOTA_SYNC == 0) ? 0 : SK_MIN_TXQ_SIZE)) > pAC->GIni.GIRamSize) {
+		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_INIT,
+			("SkGeInitAssignRamToQueues: Not enough memory (%d)\n",
+			 pAC->GIni.GIRamSize));
+		return(2);
+	}
+
+	if (DualNet) {
+		/* every port gets the same amount of memory */
+		ActivePortKilobytes = pAC->GIni.GIRamSize / pAC->GIni.GIMacsFound;
+		for (i = 0; i < pAC->GIni.GIMacsFound; i++) {
+
+			pGePort = &pAC->GIni.GP[i];
+			
+			/* take away the minimum memory for active queues */
+			ActivePortKilobytes -= (SK_MIN_RXQ_SIZE + SK_MIN_TXQ_SIZE);
+
+			/* receive queue gets the minimum + 80% of the rest */
+			pGePort->PRxQSize = (int) (ROUND_QUEUE_SIZE_KB((
+				ActivePortKilobytes * (unsigned long) RAM_QUOTA_RX) / 100))
+				+ SK_MIN_RXQ_SIZE;
+
+			ActivePortKilobytes -= (pGePort->PRxQSize - SK_MIN_RXQ_SIZE);
+
+			/* synchronous transmit queue */
+			pGePort->PXSQSize = 0;
+
+			/* asynchronous transmit queue */
+			pGePort->PXAQSize = (int) ROUND_QUEUE_SIZE_KB(ActivePortKilobytes +
+				SK_MIN_TXQ_SIZE);
+		}
+	}
+	else {	
+		/* Rlmt Mode or single link adapter */
+
+		/* Set standby queue size defaults for all standby ports */
+		for (i = 0; i < pAC->GIni.GIMacsFound; i++) {
+
+			if (i != ActivePort) {
+				pGePort = &pAC->GIni.GP[i];
+
+				pGePort->PRxQSize = SK_MIN_RXQ_SIZE;
+				pGePort->PXAQSize = SK_MIN_TXQ_SIZE;
+				pGePort->PXSQSize = 0;
+
+				/* Count used RAM */
+				UsedKilobytes += pGePort->PRxQSize + pGePort->PXAQSize;
+			}
+		}
+		/* what's left? */
+		ActivePortKilobytes = pAC->GIni.GIRamSize - UsedKilobytes;
+
+		/* assign it to the active port */
+		/* first take away the minimum memory */
+		ActivePortKilobytes -= (SK_MIN_RXQ_SIZE + SK_MIN_TXQ_SIZE);
+		pGePort = &pAC->GIni.GP[ActivePort];
+
+		/* receive queue get's the minimum + 80% of the rest */
+		pGePort->PRxQSize = (int) (ROUND_QUEUE_SIZE_KB((ActivePortKilobytes *
+			(unsigned long) RAM_QUOTA_RX) / 100)) + SK_MIN_RXQ_SIZE;
+
+		ActivePortKilobytes -= (pGePort->PRxQSize - SK_MIN_RXQ_SIZE);
+
+		/* synchronous transmit queue */
+		pGePort->PXSQSize = 0;
+
+		/* asynchronous transmit queue */
+		pGePort->PXAQSize = (int) ROUND_QUEUE_SIZE_KB(ActivePortKilobytes) +
+			SK_MIN_TXQ_SIZE;
+	}
+#ifdef VCPU
+	VCPUprintf(0, "PRxQSize=%u, PXSQSize=%u, PXAQSize=%u\n",
+		pGePort->PRxQSize, pGePort->PXSQSize, pGePort->PXAQSize);
+#endif /* VCPU */
+
+	return(0);
+}	/* SkGeInitAssignRamToQueues */
+
+/******************************************************************************
+ *
+ *	SkGeCheckQSize() - Checks the Adapters Queue Size Configuration
+ *
+ * Description:
+ *	This function verifies the Queue Size Configuration specified
+ *	in the variables PRxQSize, PXSQSize, and PXAQSize of all
+ *	used ports.
+ *	This requirements must be fullfilled to have a valid configuration:
+ *		- The size of all queues must not exceed GIRamSize.
+ *		- The queue sizes must be specified in units of 8 kB.
+ *		- The size of Rx queues of available ports must not be
+ *		  smaller than 16 kB.
+ *		- The size of at least one Tx queue (synch. or asynch.)
+ *        of available ports must not be smaller than 16 kB
+ *        when Jumbo Frames are used.
+ *		- The RAM start and end addresses must not be changed
+ *		  for ports which are already initialized.
+ *	Furthermore SkGeCheckQSize() defines the Start and End Addresses
+ *  of all ports and stores them into the HWAC port	structure.
+ *
+ * Returns:
+ *	0:	Queue Size Configuration valid
+ *	1:	Queue Size Configuration invalid
+ */
+static int SkGeCheckQSize(
+SK_AC	 *pAC,		/* adapter context */
+int		 Port)		/* port index */
+{
+	SK_GEPORT *pPrt;
+	int	i;
+	int	Rtv;
+	int	Rtv2;
+	SK_U32	StartAddr;
+#ifndef SK_SLIM
+	int	UsedMem;	/* total memory used (max. found ports) */
+#endif	
+
+	Rtv = 0;
+	
+#ifndef SK_SLIM
+
+	UsedMem = 0;
+	for (i = 0; i < pAC->GIni.GIMacsFound; i++) {
+		pPrt = &pAC->GIni.GP[i];
+
+		if ((pPrt->PRxQSize & QZ_UNITS) != 0 ||
+			(pPrt->PXSQSize & QZ_UNITS) != 0 ||
+			(pPrt->PXAQSize & QZ_UNITS) != 0) {
+
+			SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E012, SKERR_HWI_E012MSG);
+			return(1);
+		}
+
+		if (i == Port && pPrt->PRxQSize < SK_MIN_RXQ_SIZE) {
+			SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E011, SKERR_HWI_E011MSG);
+			return(1);
+		}
+		
+		/*
+		 * the size of at least one Tx queue (synch. or asynch.) has to be > 0.
+		 * if Jumbo Frames are used, this size has to be >= 16 kB.
+		 */
+		if ((i == Port && pPrt->PXSQSize == 0 && pPrt->PXAQSize == 0) ||
+			(pAC->GIni.GIPortUsage == SK_JUMBO_LINK &&
+            ((pPrt->PXSQSize > 0 && pPrt->PXSQSize < SK_MIN_TXQ_SIZE) ||
+			 (pPrt->PXAQSize > 0 && pPrt->PXAQSize < SK_MIN_TXQ_SIZE)))) {
+				SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E023, SKERR_HWI_E023MSG);
+				return(1);
+		}
+		
+		UsedMem += pPrt->PRxQSize + pPrt->PXSQSize + pPrt->PXAQSize;
+	}
+	
+	if (UsedMem > pAC->GIni.GIRamSize) {
+		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E012, SKERR_HWI_E012MSG);
+		return(1);
+	}
+#endif	/* !SK_SLIM */
+
+	/* Now start address calculation */
+	StartAddr = pAC->GIni.GIRamOffs;
+	for (i = 0; i < pAC->GIni.GIMacsFound; i++) {
+		pPrt = &pAC->GIni.GP[i];
+
+		/* Calculate/Check values for the receive queue */
+		Rtv2 = DoCalcAddr(pAC, pPrt, pPrt->PRxQSize, &StartAddr,
+			&pPrt->PRxQRamStart, &pPrt->PRxQRamEnd);
+		Rtv |= Rtv2;
+
+		/* Calculate/Check values for the synchronous Tx queue */
+		Rtv2 = DoCalcAddr(pAC, pPrt, pPrt->PXSQSize, &StartAddr,
+			&pPrt->PXsQRamStart, &pPrt->PXsQRamEnd);
+		Rtv |= Rtv2;
+
+		/* Calculate/Check values for the asynchronous Tx queue */
+		Rtv2 = DoCalcAddr(pAC, pPrt, pPrt->PXAQSize, &StartAddr,
+			&pPrt->PXaQRamStart, &pPrt->PXaQRamEnd);
+		Rtv |= Rtv2;
+
+		if (Rtv) {
+			SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E013, SKERR_HWI_E013MSG);
+			return(1);
+		}
+	}
+
+	return(0);
+}	/* SkGeCheckQSize */
+
+
+#ifdef GENESIS
+/******************************************************************************
+ *
+ *	SkGeInitMacArb() - Initialize the MAC Arbiter
+ *
+ * Description:
+ *	This function initializes the MAC Arbiter.
+ *	It must not be called if there is still an
+ *	initialized or active port.
+ *
+ * Returns:
+ *	nothing
+ */
+static void SkGeInitMacArb(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC)		/* IO context */
+{
+	/* release local reset */
+	SK_OUT16(IoC, B3_MA_TO_CTRL, MA_RST_CLR);
+
+	/* configure timeout values */
+	SK_OUT8(IoC, B3_MA_TOINI_RX1, SK_MAC_TO_53);
+	SK_OUT8(IoC, B3_MA_TOINI_RX2, SK_MAC_TO_53);
+	SK_OUT8(IoC, B3_MA_TOINI_TX1, SK_MAC_TO_53);
+	SK_OUT8(IoC, B3_MA_TOINI_TX2, SK_MAC_TO_53);
+
+	SK_OUT8(IoC, B3_MA_RCINI_RX1, 0);
+	SK_OUT8(IoC, B3_MA_RCINI_RX2, 0);
+	SK_OUT8(IoC, B3_MA_RCINI_TX1, 0);
+	SK_OUT8(IoC, B3_MA_RCINI_TX2, 0);
+
+	/* recovery values are needed for XMAC II Rev. B2 only */
+	/* Fast Output Enable Mode was intended to use with Rev. B2, but now? */
+
+	/*
+	 * There is no start or enable button to push, therefore
+	 * the MAC arbiter is configured and enabled now.
+	 */
+}	/* SkGeInitMacArb */
+
+
+/******************************************************************************
+ *
+ *	SkGeInitPktArb() - Initialize the Packet Arbiter
+ *
+ * Description:
+ *	This function initializes the Packet Arbiter.
+ *	It must not be called if there is still an
+ *	initialized or active port.
+ *
+ * Returns:
+ *	nothing
+ */
+static void SkGeInitPktArb(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC)		/* IO context */
+{
+	/* release local reset */
+	SK_OUT16(IoC, B3_PA_CTRL, PA_RST_CLR);
+
+	/* configure timeout values */
+	SK_OUT16(IoC, B3_PA_TOINI_RX1, SK_PKT_TO_MAX);
+	SK_OUT16(IoC, B3_PA_TOINI_RX2, SK_PKT_TO_MAX);
+	SK_OUT16(IoC, B3_PA_TOINI_TX1, SK_PKT_TO_MAX);
+	SK_OUT16(IoC, B3_PA_TOINI_TX2, SK_PKT_TO_MAX);
+
+	/*
+	 * enable timeout timers if jumbo frames not used
+	 * NOTE: the packet arbiter timeout interrupt is needed for
+	 * half duplex hangup workaround
+	 */
+	if (pAC->GIni.GIPortUsage != SK_JUMBO_LINK) {
+		if (pAC->GIni.GIMacsFound == 1) {
+			SK_OUT16(IoC, B3_PA_CTRL, PA_ENA_TO_TX1);
+		}
+		else {
+			SK_OUT16(IoC, B3_PA_CTRL, PA_ENA_TO_TX1 | PA_ENA_TO_TX2);
+		}
+	}
+}	/* SkGeInitPktArb */
+#endif /* GENESIS */
+
+
+/******************************************************************************
+ *
+ *	SkGeInitMacFifo() - Initialize the MAC FIFOs
+ *
+ * Description:
+ *	Initialize all MAC FIFOs of the specified port
+ *
+ * Returns:
+ *	nothing
+ */
+static void SkGeInitMacFifo(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC,		/* IO context */
+int		Port)		/* Port Index (MAC_1 + n) */
+{
+	SK_U16	Word;
+#ifdef VCPU
+	SK_U32	DWord;
+#endif /* VCPU */
+	/*
+	 * For each FIFO:
+	 *	- release local reset
+	 *	- use default value for MAC FIFO size
+	 *	- setup defaults for the control register
+	 *	- enable the FIFO
+	 */
+	
+#ifdef GENESIS
+	if (pAC->GIni.GIGenesis) {
+		/* Configure Rx MAC FIFO */
+		SK_OUT8(IoC, MR_ADDR(Port, RX_MFF_CTRL2), MFF_RST_CLR);
+		SK_OUT16(IoC, MR_ADDR(Port, RX_MFF_CTRL1), MFF_RX_CTRL_DEF);
+		SK_OUT8(IoC, MR_ADDR(Port, RX_MFF_CTRL2), MFF_ENA_OP_MD);
+	
+		/* Configure Tx MAC FIFO */
+		SK_OUT8(IoC, MR_ADDR(Port, TX_MFF_CTRL2), MFF_RST_CLR);
+		SK_OUT16(IoC, MR_ADDR(Port, TX_MFF_CTRL1), MFF_TX_CTRL_DEF);
+		SK_OUT8(IoC, MR_ADDR(Port, TX_MFF_CTRL2), MFF_ENA_OP_MD);
+	
+		/* Enable frame flushing if jumbo frames used */
+		if (pAC->GIni.GIPortUsage == SK_JUMBO_LINK) {
+			SK_OUT16(IoC, MR_ADDR(Port, RX_MFF_CTRL1), MFF_ENA_FLUSH);
+		}
+	}
+#endif /* GENESIS */
+	
+#ifdef YUKON
+	if (pAC->GIni.GIYukon) {
+		/* set Rx GMAC FIFO Flush Mask */
+		SK_OUT16(IoC, MR_ADDR(Port, RX_GMF_FL_MSK), (SK_U16)RX_FF_FL_DEF_MSK);
+		
+		Word = (SK_U16)GMF_RX_CTRL_DEF;
+
+		/* disable Rx GMAC FIFO Flush for YUKON-Lite Rev. A0 only */
+		if (pAC->GIni.GIYukonLite && pAC->GIni.GIChipId == CHIP_ID_YUKON) {
+
+			Word &= ~GMF_RX_F_FL_ON;
+		}
+		
+		/* Configure Rx MAC FIFO */
+		SK_OUT8(IoC, MR_ADDR(Port, RX_GMF_CTRL_T), (SK_U8)GMF_RST_CLR);
+		SK_OUT16(IoC, MR_ADDR(Port, RX_GMF_CTRL_T), Word);
+		
+		/* set Rx GMAC FIFO Flush Threshold (default: 0x0a -> 56 bytes) */
+		SK_OUT16(IoC, MR_ADDR(Port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF);
+		
+		/* Configure Tx MAC FIFO */
+		SK_OUT8(IoC, MR_ADDR(Port, TX_GMF_CTRL_T), (SK_U8)GMF_RST_CLR);
+		SK_OUT16(IoC, MR_ADDR(Port, TX_GMF_CTRL_T), (SK_U16)GMF_TX_CTRL_DEF);
+		
+#ifdef VCPU
+		SK_IN32(IoC, MR_ADDR(Port, RX_GMF_AF_THR), &DWord);
+		SK_IN32(IoC, MR_ADDR(Port, TX_GMF_AE_THR), &DWord);
+#endif /* VCPU */
+		
+		/* set Tx GMAC FIFO Almost Empty Threshold */
+/*		SK_OUT32(IoC, MR_ADDR(Port, TX_GMF_AE_THR), 0); */
+	}
+#endif /* YUKON */
+
+}	/* SkGeInitMacFifo */
+
+#ifdef	SK_LNK_SYNC_CNT
+/******************************************************************************
+ *
+ *	SkGeLoadLnkSyncCnt() - Load the Link Sync Counter and starts counting
+ *
+ * Description:
+ *	This function starts the Link Sync Counter of the specified
+ *	port and enables the generation of an Link Sync IRQ.
+ *	The Link Sync Counter may be used to detect an active link,
+ *	if autonegotiation is not used.
+ *
+ * Note:
+ *	o To ensure receiving the Link Sync Event the LinkSyncCounter
+ *	  should be initialized BEFORE clearing the XMAC's reset!
+ *	o Enable IS_LNK_SYNC_M1 and IS_LNK_SYNC_M2 after calling this
+ *	  function.
+ *
+ * Returns:
+ *	nothing
+ */
+void SkGeLoadLnkSyncCnt(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC,		/* IO context */
+int		Port,		/* Port Index (MAC_1 + n) */
+SK_U32	CntVal)		/* Counter value */
+{
+	SK_U32	OrgIMsk;
+	SK_U32	NewIMsk;
+	SK_U32	ISrc;
+	SK_BOOL	IrqPend;
+
+	/* stop counter */
+	SK_OUT8(IoC, MR_ADDR(Port, LNK_SYNC_CTRL), LED_STOP);
+
+	/*
+	 * ASIC problem:
+	 * Each time starting the Link Sync Counter an IRQ is generated
+	 * by the adapter. See problem report entry from 21.07.98
+	 *
+	 * Workaround:	Disable Link Sync IRQ and clear the unexpeced IRQ
+	 *		if no IRQ is already pending.
+	 */
+	IrqPend = SK_FALSE;
+	SK_IN32(IoC, B0_ISRC, &ISrc);
+	SK_IN32(IoC, B0_IMSK, &OrgIMsk);
+	if (Port == MAC_1) {
+		NewIMsk = OrgIMsk & ~IS_LNK_SYNC_M1;
+		if ((ISrc & IS_LNK_SYNC_M1) != 0) {
+			IrqPend = SK_TRUE;
+		}
+	}
+	else {
+		NewIMsk = OrgIMsk & ~IS_LNK_SYNC_M2;
+		if ((ISrc & IS_LNK_SYNC_M2) != 0) {
+			IrqPend = SK_TRUE;
+		}
+	}
+	if (!IrqPend) {
+		SK_OUT32(IoC, B0_IMSK, NewIMsk);
+	}
+
+	/* load counter */
+	SK_OUT32(IoC, MR_ADDR(Port, LNK_SYNC_INI), CntVal);
+
+	/* start counter */
+	SK_OUT8(IoC, MR_ADDR(Port, LNK_SYNC_CTRL), LED_START);
+
+	if (!IrqPend) {
+		/* clear the unexpected IRQ, and restore the interrupt mask */
+		SK_OUT8(IoC, MR_ADDR(Port, LNK_SYNC_CTRL), LED_CLR_IRQ);
+		SK_OUT32(IoC, B0_IMSK, OrgIMsk);
+	}
+}	/* SkGeLoadLnkSyncCnt*/
+#endif	/* SK_LNK_SYNC_CNT */
+
+#if defined(SK_DIAG) || defined(SK_CFG_SYNC)
+/******************************************************************************
+ *
+ *	SkGeCfgSync() - Configure synchronous bandwidth for this port.
+ *
+ * Description:
+ *	This function may be used to configure synchronous bandwidth
+ *	to the specified port. This may be done any time after
+ *	initializing the port. The configuration values are NOT saved
+ *	in the HWAC port structure and will be overwritten any
+ *	time when stopping and starting the port.
+ *	Any values for the synchronous configuration will be ignored
+ *	if the size of the synchronous queue is zero!
+ *
+ *	The default configuration for the synchronous service is
+ *	TXA_ENA_FSYNC. This means if the size of
+ *	the synchronous queue is unequal zero but no specific
+ *	synchronous bandwidth is configured, the synchronous queue
+ *	will always have the 'unlimited' transmit priority!
+ *
+ *	This mode will be restored if the synchronous bandwidth is
+ *	deallocated ('IntTime' = 0 and 'LimCount' = 0).
+ *
+ * Returns:
+ *	0:	success
+ *	1:	parameter configuration error
+ *	2:	try to configure quality of service although no
+ *		synchronous queue is configured
+ */
+int SkGeCfgSync(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC,		/* IO context */
+int		Port,		/* Port Index (MAC_1 + n) */
+SK_U32	IntTime,	/* Interval Timer Value in units of 8ns */
+SK_U32	LimCount,	/* Number of bytes to transfer during IntTime */
+int		SyncMode)	/* Sync Mode: TXA_ENA_ALLOC | TXA_DIS_ALLOC | 0 */
+{
+	int Rtv;
+
+	Rtv = 0;
+
+	/* check the parameters */
+	if (LimCount > IntTime ||
+		(LimCount == 0 && IntTime != 0) ||
+		(LimCount != 0 && IntTime == 0)) {
+
+		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E010, SKERR_HWI_E010MSG);
+		return(1);
+	}
+	
+	if (pAC->GIni.GP[Port].PXSQSize == 0) {
+		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E009, SKERR_HWI_E009MSG);
+		return(2);
+	}
+	
+	/* calculate register values */
+	IntTime = (IntTime / 2) * pAC->GIni.GIHstClkFact / 100;
+	LimCount = LimCount / 8;
+	
+	if (IntTime > TXA_MAX_VAL || LimCount > TXA_MAX_VAL) {
+		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E010, SKERR_HWI_E010MSG);
+		return(1);
+	}
+
+	/*
+	 * - Enable 'Force Sync' to ensure the synchronous queue
+	 *   has the priority while configuring the new values.
+	 * - Also 'disable alloc' to ensure the settings complies
+	 *   to the SyncMode parameter.
+	 * - Disable 'Rate Control' to configure the new values.
+	 * - write IntTime and LimCount
+	 * - start 'Rate Control' and disable 'Force Sync'
+	 *   if Interval Timer or Limit Counter not zero.
+	 */
+	SK_OUT8(IoC, MR_ADDR(Port, TXA_CTRL),
+		TXA_ENA_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
+	
+	SK_OUT32(IoC, MR_ADDR(Port, TXA_ITI_INI), IntTime);
+	SK_OUT32(IoC, MR_ADDR(Port, TXA_LIM_INI), LimCount);
+	
+	SK_OUT8(IoC, MR_ADDR(Port, TXA_CTRL),
+		(SK_U8)(SyncMode & (TXA_ENA_ALLOC | TXA_DIS_ALLOC)));
+	
+	if (IntTime != 0 || LimCount != 0) {
+		SK_OUT8(IoC, MR_ADDR(Port, TXA_CTRL), TXA_DIS_FSYNC | TXA_START_RC);
+	}
+
+	return(0);
+}	/* SkGeCfgSync */
+#endif /* SK_DIAG || SK_CFG_SYNC*/
+
+
+/******************************************************************************
+ *
+ *	DoInitRamQueue() - Initialize the RAM Buffer Address of a single Queue
+ *
+ * Desccription:
+ *	If the queue is used, enable and initialize it.
+ *	Make sure the queue is still reset, if it is not used.
+ *
+ * Returns:
+ *	nothing
+ */
+static void DoInitRamQueue(
+SK_AC	*pAC,			/* adapter context */
+SK_IOC	IoC,			/* IO context */
+int		QuIoOffs,		/* Queue IO Address Offset */
+SK_U32	QuStartAddr,	/* Queue Start Address */
+SK_U32	QuEndAddr,		/* Queue End Address */
+int		QuType)			/* Queue Type (SK_RX_SRAM_Q|SK_RX_BRAM_Q|SK_TX_RAM_Q) */
+{
+	SK_U32	RxUpThresVal;
+	SK_U32	RxLoThresVal;
+
+	if (QuStartAddr != QuEndAddr) {
+		/* calculate thresholds, assume we have a big Rx queue */
+		RxUpThresVal = (QuEndAddr + 1 - QuStartAddr - SK_RB_ULPP) / 8;
+		RxLoThresVal = (QuEndAddr + 1 - QuStartAddr - SK_RB_LLPP_B)/8;
+
+		/* build HW address format */
+		QuStartAddr = QuStartAddr / 8;
+		QuEndAddr = QuEndAddr / 8;
+
+		/* release local reset */
+		SK_OUT8(IoC, RB_ADDR(QuIoOffs, RB_CTRL), RB_RST_CLR);
+
+		/* configure addresses */
+		SK_OUT32(IoC, RB_ADDR(QuIoOffs, RB_START), QuStartAddr);
+		SK_OUT32(IoC, RB_ADDR(QuIoOffs, RB_END), QuEndAddr);
+		SK_OUT32(IoC, RB_ADDR(QuIoOffs, RB_WP), QuStartAddr);
+		SK_OUT32(IoC, RB_ADDR(QuIoOffs, RB_RP), QuStartAddr);
+
+		switch (QuType) {
+		case SK_RX_SRAM_Q:
+			/* configure threshold for small Rx Queue */
+			RxLoThresVal += (SK_RB_LLPP_B - SK_RB_LLPP_S) / 8;
+
+			/* continue with SK_RX_BRAM_Q */
+		case SK_RX_BRAM_Q:
+			/* write threshold for Rx Queue */
+
+			SK_OUT32(IoC, RB_ADDR(QuIoOffs, RB_RX_UTPP), RxUpThresVal);
+			SK_OUT32(IoC, RB_ADDR(QuIoOffs, RB_RX_LTPP), RxLoThresVal);
+
+			/* the high priority threshold not used */
+			break;
+		case SK_TX_RAM_Q:
+			/*
+			 * Do NOT use Store & Forward under normal operation due to
+			 * performance optimization (GENESIS only).
+			 * But if Jumbo Frames are configured (XMAC Tx FIFO is only 4 kB)
+			 * or YUKON is used ((GMAC Tx FIFO is only 1 kB)
+			 * we NEED Store & Forward of the RAM buffer.
+			 */
+			if (pAC->GIni.GIPortUsage == SK_JUMBO_LINK ||
+				pAC->GIni.GIYukon) {
+				/* enable Store & Forward Mode for the Tx Side */
+				SK_OUT8(IoC, RB_ADDR(QuIoOffs, RB_CTRL), RB_ENA_STFWD);
+			}
+			break;
+		}
+
+		/* set queue operational */
+		SK_OUT8(IoC, RB_ADDR(QuIoOffs, RB_CTRL), RB_ENA_OP_MD);
+	}
+	else {
+		/* ensure the queue is still disabled */
+		SK_OUT8(IoC, RB_ADDR(QuIoOffs, RB_CTRL), RB_RST_SET);
+	}
+}	/* DoInitRamQueue */
+
+
+/******************************************************************************
+ *
+ *	SkGeInitRamBufs() - Initialize the RAM Buffer Queues
+ *
+ * Description:
+ *	Initialize all RAM Buffer Queues of the specified port
+ *
+ * Returns:
+ *	nothing
+ */
+static void SkGeInitRamBufs(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC,		/* IO context */
+int		Port)		/* Port Index (MAC_1 + n) */
+{
+	SK_GEPORT *pPrt;
+	int RxQType;
+
+	pPrt = &pAC->GIni.GP[Port];
+
+	if (pPrt->PRxQSize == SK_MIN_RXQ_SIZE) {
+		RxQType = SK_RX_SRAM_Q; 	/* small Rx Queue */
+	}
+	else {
+		RxQType = SK_RX_BRAM_Q;		/* big Rx Queue */
+	}
+
+	DoInitRamQueue(pAC, IoC, pPrt->PRxQOff, pPrt->PRxQRamStart,
+		pPrt->PRxQRamEnd, RxQType);
+	
+	DoInitRamQueue(pAC, IoC, pPrt->PXsQOff, pPrt->PXsQRamStart,
+		pPrt->PXsQRamEnd, SK_TX_RAM_Q);
+	
+	DoInitRamQueue(pAC, IoC, pPrt->PXaQOff, pPrt->PXaQRamStart,
+		pPrt->PXaQRamEnd, SK_TX_RAM_Q);
+
+}	/* SkGeInitRamBufs */
+
+
+/******************************************************************************
+ *
+ *	SkGeInitRamIface() - Initialize the RAM Interface
+ *
+ * Description:
+ *	This function initializes the Adapters RAM Interface.
+ *
+ * Note:
+ *	This function is used in the diagnostics.
+ *
+ * Returns:
+ *	nothing
+ */
+static void SkGeInitRamIface(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC)		/* IO context */
+{
+	/* release local reset */
+	SK_OUT16(IoC, B3_RI_CTRL, RI_RST_CLR);
+
+	/* configure timeout values */
+	SK_OUT8(IoC, B3_RI_WTO_R1, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_WTO_XA1, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_WTO_XS1, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_RTO_R1, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_RTO_XA1, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_RTO_XS1, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_WTO_R2, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_WTO_XA2, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_WTO_XS2, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_RTO_R2, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_RTO_XA2, SK_RI_TO_53);
+	SK_OUT8(IoC, B3_RI_RTO_XS2, SK_RI_TO_53);
+
+}	/* SkGeInitRamIface */
+
+
+/******************************************************************************
+ *
+ *	SkGeInitBmu() - Initialize the BMU state machines
+ *
+ * Description:
+ *	Initialize all BMU state machines of the specified port
+ *
+ * Returns:
+ *	nothing
+ */
+static void SkGeInitBmu(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC,		/* IO context */
+int		Port)		/* Port Index (MAC_1 + n) */
+{
+	SK_GEPORT	*pPrt;
+	SK_U32		RxWm;
+	SK_U32		TxWm;
+
+	pPrt = &pAC->GIni.GP[Port];
+
+	RxWm = SK_BMU_RX_WM;
+	TxWm = SK_BMU_TX_WM;
+	
+	if (!pAC->GIni.GIPciSlot64 && !pAC->GIni.GIPciClock66) {
+		/* for better performance */
+		RxWm /= 2;
+		TxWm /= 2;
+	}
+
+	/* Rx Queue: Release all local resets and set the watermark */
+	SK_OUT32(IoC, Q_ADDR(pPrt->PRxQOff, Q_CSR), CSR_CLR_RESET);
+	SK_OUT32(IoC, Q_ADDR(pPrt->PRxQOff, Q_F), RxWm);
+
+	/*
+	 * Tx Queue: Release all local resets if the queue is used !
+	 * 		set watermark
+	 */
+	if (pPrt->PXSQSize != 0) {
+		SK_OUT32(IoC, Q_ADDR(pPrt->PXsQOff, Q_CSR), CSR_CLR_RESET);
+		SK_OUT32(IoC, Q_ADDR(pPrt->PXsQOff, Q_F), TxWm);
+	}
+	
+	if (pPrt->PXAQSize != 0) {
+		SK_OUT32(IoC, Q_ADDR(pPrt->PXaQOff, Q_CSR), CSR_CLR_RESET);
+		SK_OUT32(IoC, Q_ADDR(pPrt->PXaQOff, Q_F), TxWm);
+	}
+	/*
+	 * Do NOT enable the descriptor poll timers here, because
+	 * the descriptor addresses are not specified yet.
+	 */
+}	/* SkGeInitBmu */
+
+
+/******************************************************************************
+ *
+ *	TestStopBit() -	Test the stop bit of the queue
+ *
+ * Description:
+ *	Stopping a queue is not as simple as it seems to be.
+ *	If descriptor polling is enabled, it may happen
+ *	that RX/TX stop is done and SV idle is NOT set.
+ *	In this case we have to issue another stop command.
+ *
+ * Returns:
+ *	The queues control status register
+ */
+static SK_U32 TestStopBit(
+SK_AC	*pAC,		/* Adapter Context */
+SK_IOC	IoC,		/* IO Context */
+int		QuIoOffs)	/* Queue IO Address Offset */
+{
+	SK_U32	QuCsr;	/* CSR contents */
+
+	SK_IN32(IoC, Q_ADDR(QuIoOffs, Q_CSR), &QuCsr);
+	
+	if ((QuCsr & (CSR_STOP | CSR_SV_IDLE)) == 0) {
+		/* Stop Descriptor overridden by start command */
+		SK_OUT32(IoC, Q_ADDR(QuIoOffs, Q_CSR), CSR_STOP);
+
+		SK_IN32(IoC, Q_ADDR(QuIoOffs, Q_CSR), &QuCsr);
+	}
+	
+	return(QuCsr);
+}	/* TestStopBit */
+
+
+/******************************************************************************
+ *
+ *	SkGeStopPort() - Stop the Rx/Tx activity of the port 'Port'.
+ *
+ * Description:
+ *	After calling this function the descriptor rings and Rx and Tx
+ *	queues of this port may be reconfigured.
+ *
+ *	It is possible to stop the receive and transmit path separate or
+ *	both together.
+ *
+ *	Dir =	SK_STOP_TX 	Stops the transmit path only and resets the MAC.
+ *				The receive queue is still active and
+ *				the pending Rx frames may be still transferred
+ *				into the RxD.
+ *		SK_STOP_RX	Stop the receive path. The tansmit path
+ *				has to be stopped once before.
+ *		SK_STOP_ALL	SK_STOP_TX + SK_STOP_RX
+ *
+ *	RstMode = SK_SOFT_RST	Resets the MAC. The PHY is still alive.
+ *			SK_HARD_RST	Resets the MAC and the PHY.
+ *
+ * Example:
+ *	1) A Link Down event was signaled for a port. Therefore the activity
+ *	of this port should be stopped and a hardware reset should be issued
+ *	to enable the workaround of XMAC Errata #2. But the received frames
+ *	should not be discarded.
+ *		...
+ *		SkGeStopPort(pAC, IoC, Port, SK_STOP_TX, SK_HARD_RST);
+ *		(transfer all pending Rx frames)
+ *		SkGeStopPort(pAC, IoC, Port, SK_STOP_RX, SK_HARD_RST);
+ *		...
+ *
+ *	2) An event was issued which request the driver to switch
+ *	the 'virtual active' link to an other already active port
+ *	as soon as possible. The frames in the receive queue of this
+ *	port may be lost. But the PHY must not be reset during this
+ *	event.
+ *		...
+ *		SkGeStopPort(pAC, IoC, Port, SK_STOP_ALL, SK_SOFT_RST);
+ *		...
+ *
+ * Extended Description:
+ *	If SK_STOP_TX is set,
+ *		o disable the MAC's receive and transmitter to prevent
+ *		  from sending incomplete frames
+ *		o stop the port's transmit queues before terminating the
+ *		  BMUs to prevent from performing incomplete PCI cycles
+ *		  on the PCI bus
+ *		- The network Rx and Tx activity and PCI Tx transfer is
+ *		  disabled now.
+ *		o reset the MAC depending on the RstMode
+ *		o Stop Interval Timer and Limit Counter of Tx Arbiter,
+ *		  also disable Force Sync bit and Enable Alloc bit.
+ *		o perform a local reset of the port's Tx path
+ *			- reset the PCI FIFO of the async Tx queue
+ *			- reset the PCI FIFO of the sync Tx queue
+ *			- reset the RAM Buffer async Tx queue
+ *			- reset the RAM Buffer sync Tx queue
+ *			- reset the MAC Tx FIFO
+ *		o switch Link and Tx LED off, stop the LED counters
+ *
+ *	If SK_STOP_RX is set,
+ *		o stop the port's receive queue
+ *		- The path data transfer activity is fully stopped now.
+ *		o perform a local reset of the port's Rx path
+ *			- reset the PCI FIFO of the Rx queue
+ *			- reset the RAM Buffer receive queue
+ *			- reset the MAC Rx FIFO
+ *		o switch Rx LED off, stop the LED counter
+ *
+ *	If all ports are stopped,
+ *		o reset the RAM Interface.
+ *
+ * Notes:
+ *	o This function may be called during the driver states RESET_PORT and
+ *	  SWITCH_PORT.
+ */
+void SkGeStopPort(
+SK_AC	*pAC,	/* adapter context */
+SK_IOC	IoC,	/* I/O context */
+int		Port,	/* port to stop (MAC_1 + n) */
+int		Dir,	/* Direction to Stop (SK_STOP_RX, SK_STOP_TX, SK_STOP_ALL) */
+int		RstMode)/* Reset Mode (SK_SOFT_RST, SK_HARD_RST) */
+{
+#ifndef SK_DIAG
+	SK_EVPARA Para;
+#endif /* !SK_DIAG */
+	SK_GEPORT *pPrt;
+	SK_U32	DWord;
+	SK_U32	XsCsr;
+	SK_U32	XaCsr;
+	SK_U64	ToutStart;
+	int		i;
+	int		ToutCnt;
+
+	pPrt = &pAC->GIni.GP[Port];
+
+	if ((Dir & SK_STOP_TX) != 0) {
+		/* disable receiver and transmitter */
+		SkMacRxTxDisable(pAC, IoC, Port);
+		
+		/* stop both transmit queues */
+		/*
+		 * If the BMU is in the reset state CSR_STOP will terminate
+		 * immediately.
+		 */
+		SK_OUT32(IoC, Q_ADDR(pPrt->PXsQOff, Q_CSR), CSR_STOP);
+		SK_OUT32(IoC, Q_ADDR(pPrt->PXaQOff, Q_CSR), CSR_STOP);
+
+		ToutStart = SkOsGetTime(pAC);
+		ToutCnt = 0;
+		do {
+			/*
+			 * Clear packet arbiter timeout to make sure
+			 * this loop will terminate.
+			 */
+			SK_OUT16(IoC, B3_PA_CTRL, (SK_U16)((Port == MAC_1) ?
+				PA_CLR_TO_TX1 : PA_CLR_TO_TX2));
+
+			/*
+			 * If the transfer stucks at the MAC the STOP command will not
+			 * terminate if we don't flush the XMAC's transmit FIFO !
+			 */
+			SkMacFlushTxFifo(pAC, IoC, Port);
+
+			XsCsr = TestStopBit(pAC, IoC, pPrt->PXsQOff);
+			XaCsr = TestStopBit(pAC, IoC, pPrt->PXaQOff);
+
+			if (SkOsGetTime(pAC) - ToutStart > (SK_TICKS_PER_SEC / 18)) {
+				/*
+				 * Timeout of 1/18 second reached.
+				 * This needs to be checked at 1/18 sec only.
+				 */
+				ToutCnt++;
+				if (ToutCnt > 1) {
+					/* Might be a problem when the driver event handler
+					 * calls StopPort again. XXX.
+					 */
+
+					/* Fatal Error, Loop aborted */
+					SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_HWI_E018,
+						SKERR_HWI_E018MSG);
+#ifndef SK_DIAG
+					Para.Para64 = Port;
+					SkEventQueue(pAC, SKGE_DRV, SK_DRV_PORT_FAIL, Para);
+#endif /* !SK_DIAG */
+					return;
+				}
+				/*
+				 * Cache incoherency workaround: Assume a start command
+				 * has been lost while sending the frame.
+				 */
+				ToutStart = SkOsGetTime(pAC);
+
+				if ((XsCsr & CSR_STOP) != 0) {
+					SK_OUT32(IoC, Q_ADDR(pPrt->PXsQOff, Q_CSR), CSR_START);
+				}
+				if ((XaCsr & CSR_STOP) != 0) {
+					SK_OUT32(IoC, Q_ADDR(pPrt->PXaQOff, Q_CSR), CSR_START);
+				}
+			}
+
+			/*
+			 * Because of the ASIC problem report entry from 21.08.1998 it is
+			 * required to wait until CSR_STOP is reset and CSR_SV_IDLE is set.
+			 */
+		} while ((XsCsr & (CSR_STOP | CSR_SV_IDLE)) != CSR_SV_IDLE ||
+				 (XaCsr & (CSR_STOP | CSR_SV_IDLE)) != CSR_SV_IDLE);
+
+		/* Reset the MAC depending on the RstMode */
+		if (RstMode == SK_SOFT_RST) {
+			SkMacSoftRst(pAC, IoC, Port);
+		}
+		else {
+			SkMacHardRst(pAC, IoC, Port);
+		}
+ 		
+		/* Disable Force Sync bit and Enable Alloc bit */
+		SK_OUT8(IoC, MR_ADDR(Port, TXA_CTRL),
+			TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
+		
+		/* Stop Interval Timer and Limit Counter of Tx Arbiter */
+		SK_OUT32(IoC, MR_ADDR(Port, TXA_ITI_INI), 0L);
+		SK_OUT32(IoC, MR_ADDR(Port, TXA_LIM_INI), 0L);
+
+		/* Perform a local reset of the port's Tx path */
+
+		/* Reset the PCI FIFO of the async Tx queue */
+		SK_OUT32(IoC, Q_ADDR(pPrt->PXaQOff, Q_CSR), CSR_SET_RESET);
+		/* Reset the PCI FIFO of the sync Tx queue */
+		SK_OUT32(IoC, Q_ADDR(pPrt->PXsQOff, Q_CSR), CSR_SET_RESET);
+		/* Reset the RAM Buffer async Tx queue */
+		SK_OUT8(IoC, RB_ADDR(pPrt->PXaQOff, RB_CTRL), RB_RST_SET);
+		/* Reset the RAM Buffer sync Tx queue */
+		SK_OUT8(IoC, RB_ADDR(pPrt->PXsQOff, RB_CTRL), RB_RST_SET);
+		
+		/* Reset Tx MAC FIFO */
+#ifdef GENESIS
+		if (pAC->GIni.GIGenesis) {
+			/* Note: MFF_RST_SET does NOT reset the XMAC ! */
+			SK_OUT8(IoC, MR_ADDR(Port, TX_MFF_CTRL2), MFF_RST_SET);
+
+			/* switch Link and Tx LED off, stop the LED counters */
+			/* Link LED is switched off by the RLMT and the Diag itself */
+			SkGeXmitLED(pAC, IoC, MR_ADDR(Port, TX_LED_INI), SK_LED_DIS);
+		}
+#endif /* GENESIS */
+	
+#ifdef YUKON
+		if (pAC->GIni.GIYukon) {
+			/* Reset TX MAC FIFO */
+			SK_OUT8(IoC, MR_ADDR(Port, TX_GMF_CTRL_T), (SK_U8)GMF_RST_SET);
+		}
+#endif /* YUKON */
+	}
+
+	if ((Dir & SK_STOP_RX) != 0) {
+		/*
+		 * The RX Stop Command will not terminate if no buffers
+		 * are queued in the RxD ring. But it will always reach
+		 * the Idle state. Therefore we can use this feature to
+		 * stop the transfer of received packets.
+		 */
+		/* stop the port's receive queue */
+		SK_OUT32(IoC, Q_ADDR(pPrt->PRxQOff, Q_CSR), CSR_STOP);
+		
+		i = 100;
+		do {
+			/*
+			 * Clear packet arbiter timeout to make sure
+			 * this loop will terminate
+			 */
+			SK_OUT16(IoC, B3_PA_CTRL, (SK_U16)((Port == MAC_1) ?
+				PA_CLR_TO_RX1 : PA_CLR_TO_RX2));
+
+			DWord = TestStopBit(pAC, IoC, pPrt->PRxQOff);
+
+			/* timeout if i==0 (bug fix for #10748) */
+			if (--i == 0) {
+				SK_ERR_LOG(pAC, SK_ERRCL_HW, SKERR_HWI_E024,
+					SKERR_HWI_E024MSG);
+				break;
+			}
+			/*
+			 * because of the ASIC problem report entry from 21.08.98
+			 * it is required to wait until CSR_STOP is reset and
+			 * CSR_SV_IDLE is set.
+			 */
+		} while ((DWord & (CSR_STOP | CSR_SV_IDLE)) != CSR_SV_IDLE);
+
+		/* The path data transfer activity is fully stopped now */
+
+		/* Perform a local reset of the port's Rx path */
+
+		 /*	Reset the PCI FIFO of the Rx queue */
+		SK_OUT32(IoC, Q_ADDR(pPrt->PRxQOff, Q_CSR), CSR_SET_RESET);
+		/* Reset the RAM Buffer receive queue */
+		SK_OUT8(IoC, RB_ADDR(pPrt->PRxQOff, RB_CTRL), RB_RST_SET);
+
+		/* Reset Rx MAC FIFO */
+#ifdef GENESIS
+		if (pAC->GIni.GIGenesis) {
+			
+			SK_OUT8(IoC, MR_ADDR(Port, RX_MFF_CTRL2), MFF_RST_SET);
+
+			/* switch Rx LED off, stop the LED counter */
+			SkGeXmitLED(pAC, IoC, MR_ADDR(Port, RX_LED_INI), SK_LED_DIS);
+		}
+#endif /* GENESIS */
+	
+#ifdef YUKON
+		if (pAC->GIni.GIYukon) {
+			/* Reset Rx MAC FIFO */
+			SK_OUT8(IoC, MR_ADDR(Port, RX_GMF_CTRL_T), (SK_U8)GMF_RST_SET);
+		}
+#endif /* YUKON */
+	}
+}	/* SkGeStopPort */
+
+
+/******************************************************************************
+ *
+ *	SkGeInit0() - Level 0 Initialization
+ *
+ * Description:
+ *	- Initialize the BMU address offsets
+ *
+ * Returns:
+ *	nothing
+ */
+static void SkGeInit0(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC)		/* IO context */
+{
+	int i;
+	SK_GEPORT *pPrt;
+
+	for (i = 0; i < SK_MAX_MACS; i++) {
+		pPrt = &pAC->GIni.GP[i];
+
+		pPrt->PState = SK_PRT_RESET;
+		pPrt->PRxQOff = QOffTab[i].RxQOff;
+		pPrt->PXsQOff = QOffTab[i].XsQOff;
+		pPrt->PXaQOff = QOffTab[i].XaQOff;
+		pPrt->PCheckPar = SK_FALSE;
+		pPrt->PIsave = 0;
+		pPrt->PPrevShorts = 0;
+		pPrt->PLinkResCt = 0;
+		pPrt->PAutoNegTOCt = 0;
+		pPrt->PPrevRx = 0;
+		pPrt->PPrevFcs = 0;
+		pPrt->PRxLim = SK_DEF_RX_WA_LIM;
+		pPrt->PLinkMode = (SK_U8)SK_LMODE_AUTOFULL;
+		pPrt->PLinkSpeedCap = (SK_U8)SK_LSPEED_CAP_1000MBPS;
+		pPrt->PLinkSpeed = (SK_U8)SK_LSPEED_1000MBPS;
+		pPrt->PLinkSpeedUsed = (SK_U8)SK_LSPEED_STAT_UNKNOWN;
+		pPrt->PLinkModeConf = (SK_U8)SK_LMODE_AUTOSENSE;
+		pPrt->PFlowCtrlMode = (SK_U8)SK_FLOW_MODE_SYM_OR_REM;
+		pPrt->PLinkCap = (SK_U8)(SK_LMODE_CAP_HALF | SK_LMODE_CAP_FULL |
+			SK_LMODE_CAP_AUTOHALF | SK_LMODE_CAP_AUTOFULL);
+		pPrt->PLinkModeStatus = (SK_U8)SK_LMODE_STAT_UNKNOWN;
+		pPrt->PFlowCtrlCap = (SK_U8)SK_FLOW_MODE_SYM_OR_REM;
+		pPrt->PFlowCtrlStatus = (SK_U8)SK_FLOW_STAT_NONE;
+		pPrt->PMSCap = 0;
+		pPrt->PMSMode = (SK_U8)SK_MS_MODE_AUTO;
+		pPrt->PMSStatus = (SK_U8)SK_MS_STAT_UNSET;
+		pPrt->PLipaAutoNeg = (SK_U8)SK_LIPA_UNKNOWN;
+		pPrt->PAutoNegFail = SK_FALSE;
+		pPrt->PHWLinkUp = SK_FALSE;
+		pPrt->PLinkBroken = SK_TRUE; /* See WA code */
+		pPrt->PPhyPowerState = PHY_PM_OPERATIONAL_MODE;
+		pPrt->PMacColThres = TX_COL_DEF;
+		pPrt->PMacJamLen = TX_JAM_LEN_DEF;
+		pPrt->PMacJamIpgVal	= TX_JAM_IPG_DEF;
+		pPrt->PMacJamIpgData = TX_IPG_JAM_DEF;
+		pPrt->PMacIpgData = IPG_DATA_DEF;
+		pPrt->PMacLimit4 = SK_FALSE;
+	}
+
+	pAC->GIni.GIPortUsage = SK_RED_LINK;
+	pAC->GIni.GILedBlinkCtrl = (SK_U16)OemConfig.Value;
+	pAC->GIni.GIValIrqMask = IS_ALL_MSK;
+
+}	/* SkGeInit0*/
+
+
+/******************************************************************************
+ *
+ *	SkGeInit1() - Level 1 Initialization
+ *
+ * Description:
+ *	o Do a software reset.
+ *	o Clear all reset bits.
+ *	o Verify that the detected hardware is present.
+ *	  Return an error if not.
+ *	o Get the hardware configuration
+ *		+ Read the number of MACs/Ports.
+ *		+ Read the RAM size.
+ *		+ Read the PCI Revision Id.
+ *		+ Find out the adapters host clock speed
+ *		+ Read and check the PHY type
+ *
+ * Returns:
+ *	0:	success
+ *	5:	Unexpected PHY type detected
+ *	6:	HW self test failed
+ */
+static int SkGeInit1(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC)		/* IO context */
+{
+	SK_U8	Byte;
+	SK_U16	Word;
+	SK_U16	CtrlStat;
+	SK_U32	DWord;
+	int	RetVal;
+	int	i;
+
+	RetVal = 0;
+
+	/* save CLK_RUN bits (YUKON-Lite) */
+	SK_IN16(IoC, B0_CTST, &CtrlStat);
+
+	/* do the SW-reset */
+	SK_OUT8(IoC, B0_CTST, CS_RST_SET);
+
+	/* release the SW-reset */
+	SK_OUT8(IoC, B0_CTST, CS_RST_CLR);
+
+	/* reset all error bits in the PCI STATUS register */
+	/*
+	 * Note: PCI Cfg cycles cannot be used, because they are not
+	 *		 available on some platforms after 'boot time'.
+	 */
+	SK_IN16(IoC, PCI_C(PCI_STATUS), &Word);
+	
+	SK_OUT8(IoC, B2_TST_CTRL1, TST_CFG_WRITE_ON);
+	SK_OUT16(IoC, PCI_C(PCI_STATUS), (SK_U16)(Word | PCI_ERRBITS));
+	SK_OUT8(IoC, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
+
+	/* release Master Reset */
+	SK_OUT8(IoC, B0_CTST, CS_MRST_CLR);
+
+#ifdef CLK_RUN
+	CtrlStat |= CS_CLK_RUN_ENA;
+#endif /* CLK_RUN */
+
+	/* restore CLK_RUN bits */
+	SK_OUT16(IoC, B0_CTST, (SK_U16)(CtrlStat &
+		(CS_CLK_RUN_HOT | CS_CLK_RUN_RST | CS_CLK_RUN_ENA)));
+
+	/* read Chip Identification Number */
+	SK_IN8(IoC, B2_CHIP_ID, &Byte);
+	pAC->GIni.GIChipId = Byte;
+	
+	/* read number of MACs */
+	SK_IN8(IoC, B2_MAC_CFG, &Byte);
+	pAC->GIni.GIMacsFound = (Byte & CFG_SNG_MAC) ? 1 : 2;
+	
+	/* get Chip Revision Number */
+	pAC->GIni.GIChipRev = (SK_U8)((Byte & CFG_CHIP_R_MSK) >> 4);
+
+	/* get diff. PCI parameters */
+	SK_IN16(IoC, B0_CTST, &CtrlStat);
+	
+	/* read the adapters RAM size */
+	SK_IN8(IoC, B2_E_0, &Byte);
+	
+	pAC->GIni.GIGenesis = SK_FALSE;
+	pAC->GIni.GIYukon = SK_FALSE;
+	pAC->GIni.GIYukonLite = SK_FALSE;
+
+#ifdef GENESIS
+	if (pAC->GIni.GIChipId == CHIP_ID_GENESIS) {
+
+		pAC->GIni.GIGenesis = SK_TRUE;
+
+		if (Byte == (SK_U8)3) {						
+			/* special case: 4 x 64k x 36, offset = 0x80000 */
+			pAC->GIni.GIRamSize = 1024;
+			pAC->GIni.GIRamOffs = (SK_U32)512 * 1024;
+		}
+		else {
+			pAC->GIni.GIRamSize = (int)Byte * 512;
+			pAC->GIni.GIRamOffs = 0;
+		}
+		/* all GE adapters work with 53.125 MHz host clock */
+		pAC->GIni.GIHstClkFact = SK_FACT_53;
+		
+		/* set Descr. Poll Timer Init Value to 250 ms */
+		pAC->GIni.GIPollTimerVal =
+			SK_DPOLL_DEF * (SK_U32)pAC->GIni.GIHstClkFact / 100;
+	}
+#endif /* GENESIS */
+	
+#ifdef YUKON
+	if (pAC->GIni.GIChipId != CHIP_ID_GENESIS) {
+		
+		pAC->GIni.GIYukon = SK_TRUE;
+		
+		pAC->GIni.GIRamSize = (Byte == (SK_U8)0) ? 128 : (int)Byte * 4;
+		
+		pAC->GIni.GIRamOffs = 0;
+		
+		/* WA for chip Rev. A */
+		pAC->GIni.GIWolOffs = (pAC->GIni.GIChipId == CHIP_ID_YUKON &&
+			pAC->GIni.GIChipRev == 0) ? WOL_REG_OFFS : 0;
+		
+		/* get PM Capabilities of PCI config space */
+		SK_IN16(IoC, PCI_C(PCI_PM_CAP_REG), &Word);
+
+		/* check if VAUX is available */
+		if (((CtrlStat & CS_VAUX_AVAIL) != 0) &&
+			/* check also if PME from D3cold is set */
+			((Word & PCI_PME_D3C_SUP) != 0)) {
+			/* set entry in GE init struct */
+			pAC->GIni.GIVauxAvail = SK_TRUE;
+		}
+		
+		if (pAC->GIni.GIChipId == CHIP_ID_YUKON_LITE) {
+			/* this is Rev. A1 */
+			pAC->GIni.GIYukonLite = SK_TRUE;
+		}
+		else {
+			/* save Flash-Address Register */
+			SK_IN32(IoC, B2_FAR, &DWord);
+
+			/* test Flash-Address Register */
+			SK_OUT8(IoC, B2_FAR + 3, 0xff);
+			SK_IN8(IoC, B2_FAR + 3, &Byte);
+
+			if (Byte != 0) {
+				/* this is Rev. A0 */
+				pAC->GIni.GIYukonLite = SK_TRUE;
+
+				/* restore Flash-Address Register */
+				SK_OUT32(IoC, B2_FAR, DWord);
+			}
+		}
+
+		/* switch power to VCC (WA for VAUX problem) */
+		SK_OUT8(IoC, B0_POWER_CTRL, (SK_U8)(PC_VAUX_ENA | PC_VCC_ENA |
+			PC_VAUX_OFF | PC_VCC_ON));
+
+		/* read the Interrupt source */
+		SK_IN32(IoC, B0_ISRC, &DWord);
+		
+		if ((DWord & IS_HW_ERR) != 0) {
+			/* read the HW Error Interrupt source */
+			SK_IN32(IoC, B0_HWE_ISRC, &DWord);
+			
+			if ((DWord & IS_IRQ_SENSOR) != 0) {
+				/* disable HW Error IRQ */
+				pAC->GIni.GIValIrqMask &= ~IS_HW_ERR;
+			}
+		}
+		
+		for (i = 0; i < pAC->GIni.GIMacsFound; i++) {
+			/* set GMAC Link Control reset */
+			SK_OUT16(IoC, MR_ADDR(i, GMAC_LINK_CTRL), GMLC_RST_SET);
+
+			/* clear GMAC Link Control reset */
+			SK_OUT16(IoC, MR_ADDR(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
+		}
+		/* all YU chips work with 78.125 MHz host clock */
+		pAC->GIni.GIHstClkFact = SK_FACT_78;
+		
+		pAC->GIni.GIPollTimerVal = SK_DPOLL_MAX;	/* 215 ms */
+	}
+#endif /* YUKON */
+
+	/* check if 64-bit PCI Slot is present */
+	pAC->GIni.GIPciSlot64 = (SK_BOOL)((CtrlStat & CS_BUS_SLOT_SZ) != 0);
+	
+	/* check if 66 MHz PCI Clock is active */
+	pAC->GIni.GIPciClock66 = (SK_BOOL)((CtrlStat & CS_BUS_CLOCK) != 0);
+
+	/* read PCI HW Revision Id. */
+	SK_IN8(IoC, PCI_C(PCI_REV_ID), &Byte);
+	pAC->GIni.GIPciHwRev = Byte;
+
+	/* read the PMD type */
+	SK_IN8(IoC, B2_PMD_TYP, &Byte);
+	pAC->GIni.GICopperType = (SK_U8)(Byte == 'T');
+
+	/* read the PHY type */
+	SK_IN8(IoC, B2_E_1, &Byte);
+
+	Byte &= 0x0f;	/* the PHY type is stored in the lower nibble */
+	for (i = 0; i < pAC->GIni.GIMacsFound; i++) {
+		
+#ifdef GENESIS
+		if (pAC->GIni.GIGenesis) {
+			switch (Byte) {
+			case SK_PHY_XMAC:
+				pAC->GIni.GP[i].PhyAddr = PHY_ADDR_XMAC;
+				break;
+			case SK_PHY_BCOM:
+				pAC->GIni.GP[i].PhyAddr = PHY_ADDR_BCOM;
+				pAC->GIni.GP[i].PMSCap = (SK_U8)(SK_MS_CAP_AUTO |
+					SK_MS_CAP_MASTER | SK_MS_CAP_SLAVE);
+				break;
+#ifdef OTHER_PHY
+			case SK_PHY_LONE:
+				pAC->GIni.GP[i].PhyAddr = PHY_ADDR_LONE;
+				break;
+			case SK_PHY_NAT:
+				pAC->GIni.GP[i].PhyAddr = PHY_ADDR_NAT;
+				break;
+#endif /* OTHER_PHY */
+			default:
+				/* ERROR: unexpected PHY type detected */
+				RetVal = 5;
+				break;
+			}
+		}
+#endif /* GENESIS */
+	
+#ifdef YUKON
+		if (pAC->GIni.GIYukon) {
+			
+			if (Byte < (SK_U8)SK_PHY_MARV_COPPER) {
+				/* if this field is not initialized */
+				Byte = (SK_U8)SK_PHY_MARV_COPPER;
+				
+				pAC->GIni.GICopperType = SK_TRUE;
+			}
+			
+			pAC->GIni.GP[i].PhyAddr = PHY_ADDR_MARV;
+			
+			if (pAC->GIni.GICopperType) {
+
+				pAC->GIni.GP[i].PLinkSpeedCap = (SK_U8)(SK_LSPEED_CAP_AUTO |
+					SK_LSPEED_CAP_10MBPS | SK_LSPEED_CAP_100MBPS |
+					SK_LSPEED_CAP_1000MBPS);
+				
+				pAC->GIni.GP[i].PLinkSpeed = (SK_U8)SK_LSPEED_AUTO;
+				
+				pAC->GIni.GP[i].PMSCap = (SK_U8)(SK_MS_CAP_AUTO |
+					SK_MS_CAP_MASTER | SK_MS_CAP_SLAVE);
+			}
+			else {
+				Byte = (SK_U8)SK_PHY_MARV_FIBER;
+			}
+		}
+#endif /* YUKON */
+		
+		pAC->GIni.GP[i].PhyType = (int)Byte;
+		
+		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_INIT,
+			("PHY type: %d  PHY addr: %04x\n", Byte,
+			pAC->GIni.GP[i].PhyAddr));
+	}
+	
+	/* get MAC Type & set function pointers dependent on */
+#ifdef GENESIS
+	if (pAC->GIni.GIGenesis) {
+		
+		pAC->GIni.GIMacType = SK_MAC_XMAC;
+
+		pAC->GIni.GIFunc.pFnMacUpdateStats	= SkXmUpdateStats;
+		pAC->GIni.GIFunc.pFnMacStatistic	= SkXmMacStatistic;
+		pAC->GIni.GIFunc.pFnMacResetCounter	= SkXmResetCounter;
+		pAC->GIni.GIFunc.pFnMacOverflow		= SkXmOverflowStatus;
+	}
+#endif /* GENESIS */
+	
+#ifdef YUKON
+	if (pAC->GIni.GIYukon) {
+		
+		pAC->GIni.GIMacType = SK_MAC_GMAC;
+
+		pAC->GIni.GIFunc.pFnMacUpdateStats	= SkGmUpdateStats;
+		pAC->GIni.GIFunc.pFnMacStatistic	= SkGmMacStatistic;
+		pAC->GIni.GIFunc.pFnMacResetCounter	= SkGmResetCounter;
+		pAC->GIni.GIFunc.pFnMacOverflow		= SkGmOverflowStatus;
+
+#ifdef SPECIAL_HANDLING
+		if (pAC->GIni.GIChipId == CHIP_ID_YUKON) {
+			/* check HW self test result */
+			SK_IN8(IoC, B2_E_3, &Byte);
+			if (Byte & B2_E3_RES_MASK) {
+				RetVal = 6;
+			}
+		}
+#endif
+	}
+#endif /* YUKON */
+	
+	return(RetVal);
+}	/* SkGeInit1 */
+
+
+/******************************************************************************
+ *
+ *	SkGeInit2() - Level 2 Initialization
+ *
+ * Description:
+ *	- start the Blink Source Counter
+ *	- start the Descriptor Poll Timer
+ *	- configure the MAC-Arbiter
+ *	- configure the Packet-Arbiter
+ *	- enable the Tx Arbiters
+ *	- enable the RAM Interface Arbiter
+ *
+ * Returns:
+ *	nothing
+ */
+static void SkGeInit2(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC)		/* IO context */
+{
+#ifdef GENESIS
+	SK_U32	DWord;
+#endif /* GENESIS */
+	int		i;
+
+	/* start the Descriptor Poll Timer */
+	if (pAC->GIni.GIPollTimerVal != 0) {
+		if (pAC->GIni.GIPollTimerVal > SK_DPOLL_MAX) {
+			pAC->GIni.GIPollTimerVal = SK_DPOLL_MAX;
+
+			SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E017, SKERR_HWI_E017MSG);
+		}
+		SK_OUT32(IoC, B28_DPT_INI, pAC->GIni.GIPollTimerVal);
+		SK_OUT8(IoC, B28_DPT_CTRL, DPT_START);
+	}
+
+#ifdef GENESIS
+	if (pAC->GIni.GIGenesis) {
+		/* start the Blink Source Counter */
+		DWord = SK_BLK_DUR * (SK_U32)pAC->GIni.GIHstClkFact / 100;
+
+		SK_OUT32(IoC, B2_BSC_INI, DWord);
+		SK_OUT8(IoC, B2_BSC_CTRL, BSC_START);
+
+		/*
+		 * Configure the MAC Arbiter and the Packet Arbiter.
+		 * They will be started once and never be stopped.
+		 */
+		SkGeInitMacArb(pAC, IoC);
+
+		SkGeInitPktArb(pAC, IoC);
+	}
+#endif /* GENESIS */
+	
+#ifdef YUKON
+	if (pAC->GIni.GIYukon) {
+		/* start Time Stamp Timer */
+		SK_OUT8(IoC, GMAC_TI_ST_CTRL, (SK_U8)GMT_ST_START);
+	}
+#endif /* YUKON */
+
+	/* enable the Tx Arbiters */
+	for (i = 0; i < pAC->GIni.GIMacsFound; i++) {
+		SK_OUT8(IoC, MR_ADDR(i, TXA_CTRL), TXA_ENA_ARB);
+	}
+
+	/* enable the RAM Interface Arbiter */
+	SkGeInitRamIface(pAC, IoC);
+
+}	/* SkGeInit2 */
+
+/******************************************************************************
+ *
+ *	SkGeInit() - Initialize the GE Adapter with the specified level.
+ *
+ * Description:
+ *	Level	0:	Initialize the Module structures.
+ *	Level	1:	Generic Hardware Initialization. The IOP/MemBase pointer has
+ *				to be set before calling this level.
+ *
+ *			o Do a software reset.
+ *			o Clear all reset bits.
+ *			o Verify that the detected hardware is present.
+ *			  Return an error if not.
+ *			o Get the hardware configuration
+ *				+ Set GIMacsFound with the number of MACs.
+ *				+ Store the RAM size in GIRamSize.
+ *				+ Save the PCI Revision ID in GIPciHwRev.
+ *			o return an error
+ *				if Number of MACs > SK_MAX_MACS
+ *
+ *			After returning from Level 0 the adapter
+ *			may be accessed with IO operations.
+ *
+ *	Level	2:	start the Blink Source Counter
+ *
+ * Returns:
+ *	0:	success
+ *	1:	Number of MACs exceeds SK_MAX_MACS	(after level 1)
+ *	2:	Adapter not present or not accessible
+ *	3:	Illegal initialization level
+ *	4:	Initialization Level 1 Call missing
+ *	5:	Unexpected PHY type detected
+ *	6:	HW self test failed
+ */
+int	SkGeInit(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC,		/* IO context */
+int		Level)		/* initialization level */
+{
+	int		RetVal;		/* return value */
+	SK_U32	DWord;
+
+	RetVal = 0;
+	SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_INIT,
+		("SkGeInit(Level %d)\n", Level));
+
+	switch (Level) {
+	case SK_INIT_DATA:
+		/* Initialization Level 0 */
+		SkGeInit0(pAC, IoC);
+		pAC->GIni.GILevel = SK_INIT_DATA;
+		break;
+	
+	case SK_INIT_IO:
+		/* Initialization Level 1 */
+		RetVal = SkGeInit1(pAC, IoC);
+		if (RetVal != 0) {
+			break;
+		}
+
+		/* check if the adapter seems to be accessible */
+		SK_OUT32(IoC, B2_IRQM_INI, SK_TEST_VAL);
+		SK_IN32(IoC, B2_IRQM_INI, &DWord);
+		SK_OUT32(IoC, B2_IRQM_INI, 0L);
+		
+		if (DWord != SK_TEST_VAL) {
+			RetVal = 2;
+			break;
+		}
+
+		/* check if the number of GIMacsFound matches SK_MAX_MACS */
+		if (pAC->GIni.GIMacsFound > SK_MAX_MACS) {
+			RetVal = 1;
+			break;
+		}
+
+		/* Level 1 successfully passed */
+		pAC->GIni.GILevel = SK_INIT_IO;
+		break;
+	
+	case SK_INIT_RUN:
+		/* Initialization Level 2 */
+		if (pAC->GIni.GILevel != SK_INIT_IO) {
+#ifndef SK_DIAG
+			SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E002, SKERR_HWI_E002MSG);
+#endif /* !SK_DIAG */
+			RetVal = 4;
+			break;
+		}
+		SkGeInit2(pAC, IoC);
+
+		/* Level 2 successfully passed */
+		pAC->GIni.GILevel = SK_INIT_RUN;
+		break;
+	
+	default:
+		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E003, SKERR_HWI_E003MSG);
+		RetVal = 3;
+		break;
+	}
+
+	return(RetVal);
+}	/* SkGeInit */
+
+
+/******************************************************************************
+ *
+ *	SkGeDeInit() - Deinitialize the adapter
+ *
+ * Description:
+ *	All ports of the adapter will be stopped if not already done.
+ *	Do a software reset and switch off all LEDs.
+ *
+ * Returns:
+ *	nothing
+ */
+void SkGeDeInit(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC)		/* IO context */
+{
+	int	i;
+	SK_U16	Word;
+
+#if (!defined(SK_SLIM) && !defined(VCPU))
+	/* ensure I2C is ready */
+	SkI2cWaitIrq(pAC, IoC);
+#endif	
+
+	/* stop all current transfer activity */
+	for (i = 0; i < pAC->GIni.GIMacsFound; i++) {
+		if (pAC->GIni.GP[i].PState != SK_PRT_STOP &&
+			pAC->GIni.GP[i].PState != SK_PRT_RESET) {
+
+			SkGeStopPort(pAC, IoC, i, SK_STOP_ALL, SK_HARD_RST);
+		}
+	}
+
+	/* Reset all bits in the PCI STATUS register */
+	/*
+	 * Note: PCI Cfg cycles cannot be used, because they are not
+	 *	 available on some platforms after 'boot time'.
+	 */
+	SK_IN16(IoC, PCI_C(PCI_STATUS), &Word);
+	
+	SK_OUT8(IoC, B2_TST_CTRL1, TST_CFG_WRITE_ON);
+	SK_OUT16(IoC, PCI_C(PCI_STATUS), (SK_U16)(Word | PCI_ERRBITS));
+	SK_OUT8(IoC, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
+
+	/* do the reset, all LEDs are switched off now */
+	SK_OUT8(IoC, B0_CTST, CS_RST_SET);
+	
+	pAC->GIni.GILevel = SK_INIT_DATA;
+}	/* SkGeDeInit */
+
+
+/******************************************************************************
+ *
+ *	SkGeInitPort()	Initialize the specified port.
+ *
+ * Description:
+ *	PRxQSize, PXSQSize, and PXAQSize has to be
+ *	configured for the specified port before calling this function.
+ *  The descriptor rings has to be initialized too.
+ *
+ *	o (Re)configure queues of the specified port.
+ *	o configure the MAC of the specified port.
+ *	o put ASIC and MAC(s) in operational mode.
+ *	o initialize Rx/Tx and Sync LED
+ *	o initialize RAM Buffers and MAC FIFOs
+ *
+ *	The port is ready to connect when returning.
+ *
+ * Note:
+ *	The MAC's Rx and Tx state machine is still disabled when returning.
+ *
+ * Returns:
+ *	0:	success
+ *	1:	Queue size initialization error. The configured values
+ *		for PRxQSize, PXSQSize, or PXAQSize are invalid for one
+ *		or more queues. The specified port was NOT initialized.
+ *		An error log entry was generated.
+ *	2:	The port has to be stopped before it can be initialized again.
+ */
+int SkGeInitPort(
+SK_AC	*pAC,		/* adapter context */
+SK_IOC	IoC,		/* IO context */
+int		Port)		/* Port to configure */
+{
+	SK_GEPORT *pPrt;
+
+	pPrt = &pAC->GIni.GP[Port];
+
+	if (SkGeCheckQSize(pAC, Port) != 0) {
+		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E004, SKERR_HWI_E004MSG);
+		return(1);
+	}
+	
+	if (pPrt->PState == SK_PRT_INIT || pPrt->PState == SK_PRT_RUN) {
+		SK_ERR_LOG(pAC, SK_ERRCL_SW, SKERR_HWI_E005, SKERR_HWI_E005MSG);
+		return(2);
+	}
+
+	/* configuration ok, initialize the Port now */
+
+#ifdef GENESIS
+	if (pAC->GIni.GIGenesis) {
+		/* initialize Rx, Tx and Link LED */
+		/*
+		 * If 1000BT Phy needs LED initialization than swap
+		 * LED and XMAC initialization order
+		 */
+		SkGeXmitLED(pAC, IoC, MR_ADDR(Port, TX_LED_INI), SK_LED_ENA);
+		SkGeXmitLED(pAC, IoC, MR_ADDR(Port, RX_LED_INI), SK_LED_ENA);
+		/* The Link LED is initialized by RLMT or Diagnostics itself */
+		
+		SkXmInitMac(pAC, IoC, Port);
+	}
+#endif /* GENESIS */
+	
+#ifdef YUKON
+	if (pAC->GIni.GIYukon) {
+
+		SkGmInitMac(pAC, IoC, Port);
+	}
+#endif /* YUKON */
+	
+	/* do NOT initialize the Link Sync Counter */
+
+	SkGeInitMacFifo(pAC, IoC, Port);
+	
+	SkGeInitRamBufs(pAC, IoC, Port);
+	
+	if (pPrt->PXSQSize != 0) {
+		/* enable Force Sync bit if synchronous queue available */
+		SK_OUT8(IoC, MR_ADDR(Port, TXA_CTRL), TXA_ENA_FSYNC);
+	}
+	
+	SkGeInitBmu(pAC, IoC, Port);
+
+	/* mark port as initialized */
+	pPrt->PState = SK_PRT_INIT;
+
+	return(0);
+}	/* SkGeInitPort */