/********************************************************************
 *
 *  Linux ThunderLAN Driver
 *
 *  tlan.c
 *  by James Banks, james.banks@caldera.com
 *
 *  (C) 1997 Caldera, Inc.
 *
 *  This software may be used and distributed according to the terms
 *  of the GNU Public License, incorporated herein by reference.
 *
 ** This file is best viewed/edited with tabstop=4 and colums>=132.
 *
 ** Useful (if not required) reading:
 *
 *		Texas Instruments, ThunderLAN Programmer's Guide,
 *			TI Literature Number SPWU013A
 *			available in PDF format from www.ti.com
 *		National Semiconductor, DP83840A Data Sheet
 *			available in PDF format from www.national.com
 *		Microchip Technology, 24C01A/02A/04A Data Sheet
 *			available in PDF format from www.microchip.com
 *
 ********************************************************************/


#include <linux/module.h>


#include "tlan.h"


#include <linux/bios32.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/etherdevice.h>




#ifdef MODULE
	static	struct device	*TLanDevices = NULL;
	static	int				TLanDevicesInstalled = 0;
#endif
	static  int				debug = 0;
	static	u8				*TLanPadBuffer;
	static	char			TLanSignature[] = "TLAN";
	static	int				TLanVersionMajor = 0;
	static	int				TLanVersionMinor = 27;

	static	TLanPciId TLanDeviceList[] = {
		{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10,  "Compaq Netelligent 10" },
		{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100, "Compaq Netelligent 10/100" }, 
		{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETFLEX_3_INTEGRATED, "Compaq Integrated NetFlex-3" }, 
		{ 0, 0, NULL } /* End of List */
	};


	static int  TLan_MiiReadReg(u16, u16, u16, u16 *);
	static void TLan_MiiSendData( u16, u32, unsigned );
	static void TLan_MiiSync(u16);
	static void TLan_MiiWriteReg(u16, u16, u16, u16);



/*****************************************************************************
******************************************************************************

	ThunderLAN Driver MII Routines

	These routines are based on the information in Chap. 2 of the
	"ThunderLAN Programmer's Guide", pp. 15-24.

******************************************************************************
*****************************************************************************/


	/*************************************************************************
	 *	TLan_MiiReadReg
	 *
	 *	Returns:	0 if ack received ok, 1 otherwise.
	 *	Parms:		base_port	The base IO port of the adapter in question.
	 *				dev			The address of the PHY to be queried.
	 *				reg			The register whose contents are to be
	 *							retreived.
	 *				val			A pointer to a variable to store the retrieved
	 *							value.
	 *
	 *	This function uses the TLAN's MII bus to retreive the contents of a
	 *	given register on a PHY.  It sends the appropriate info and then
	 *	reads the 16-bit register value from the MII bus via the TLAN SIO
	 *	register.
	 *
	 ************************************************************************/

		int TLan_MiiReadReg(u16 base_port, u16 dev, u16 reg, u16 *val)
		{
			u8	nack;
			u16 sio, tmp;
			u32 i;
			int	err;

			err = FALSE;
			outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
			sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;

			cli();

			TLan_MiiSync(base_port);

			TLan_ClearBit(TLAN_NET_SIO_MINTEN, sio);		/* Disable PHY ints */

			TLan_MiiSendData( base_port, 0x1, 2 );			/* Start ( 01b ) */
			TLan_MiiSendData( base_port, 0x2, 2 );			/* Read  ( 10b ) */
			TLan_MiiSendData( base_port, dev, 5 );			/* Device #      */
			TLan_MiiSendData( base_port, reg, 5 );			/* Register #    */


			TLan_ClearBit(TLAN_NET_SIO_MTXEN, sio);			/* Change direction */

			TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);			/* Clock through Idle bit */
			TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
			TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);			/* Use this to wait 300ns */

			nack = TLan_GetBit(TLAN_NET_SIO_MDATA, sio);	/* Check for ACK */
			TLan_SetBit(TLAN_NET_SIO_MCLK, sio);			/* Finish ACK clock cycle */
			if (nack) {										/* No ACK, so fake it */
				for (i = 0; i < 16; i++) {
					TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);
					TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
				}
				tmp = 0xffff;
				err = TRUE;
			} else {										/* ACKed, so read data */
				for (tmp = 0, i = 0x8000; i; i >>= 1) {
					TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);
					if (TLan_GetBit(TLAN_NET_SIO_MDATA, sio))
						tmp |= i;
					TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
				}
			}


			TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);			/* Idle cycle */
			TLan_SetBit(TLAN_NET_SIO_MCLK, sio);

			TLan_SetBit(TLAN_NET_SIO_MINTEN, sio);			/* Enable PHY ints */

			*val = tmp;

			sti();

			return err;

		} /* TLan_MiiReadReg */




	/*************************************************************************
	 *	TLan_MiiSendData
	 *
	 *	Returns:	Nothing
	 *	Parms:		base_port	The base IO port of the adapter in question.
	 *				dev			The address of the PHY to be queried.
	 *				data		The value to be placed on the MII bus.
	 *				num_bits	The number of bits in data that are to be
	 *							placed on the MII bus.
	 *
	 *	This function sends on sequence of bits on the MII configuration
	 *	bus.
	 *
	 ************************************************************************/

	 	void TLan_MiiSendData( u16 base_port, u32 data, unsigned num_bits )
		{
			u16 sio;
			u32 i;

			if ( num_bits == 0 )
				return;

			outw( TLAN_NET_SIO, base_port + TLAN_DIO_ADR );
			sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
			TLan_SetBit( TLAN_NET_SIO_MTXEN, sio );

			for ( i = ( 0x1 << ( num_bits - 1 ) ); i; i >>= 1 ) {
				TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );
				TLan_GetBit( TLAN_NET_SIO_MCLK, sio );
				if ( data & i )
					TLan_SetBit( TLAN_NET_SIO_MDATA, sio );
				else
					TLan_ClearBit( TLAN_NET_SIO_MDATA, sio );
				TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
				TLan_GetBit( TLAN_NET_SIO_MCLK, sio );
			}

		} /* TLan_MiiSendData */




	/*************************************************************************
	 *	TLan_MiiSync
	 *
	 *	Returns:	Nothing
	 *	Parms:		base_port	The base IO port of the adapter in question.
	 *
	 *	This functions syncs all PHYs in terms of the MII configuration bus.
	 *
	 ************************************************************************/

	 	void TLan_MiiSync( u16 base_port )
		{
			int i;
			u16 sio;

			outw( TLAN_NET_SIO, base_port + TLAN_DIO_ADR );
			sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;

			TLan_ClearBit( TLAN_NET_SIO_MTXEN, sio );
			for ( i = 0; i < 32; i++ ) {
				TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );
				TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
			}

		} /* TLan_MiiSync */




	/*************************************************************************
	 *	TLan_MiiWriteReg
	 *
	 *	Returns:	Nothing
	 *	Parms:		base_port	The base IO port of the adapter in question.
	 *				dev			The address of the PHY to be written to.
	 *				reg			The register whose contents are to be
	 *							written.
	 *				val			The value to be written to the register.
	 *
	 *	This function uses the TLAN's MII bus to write the contents of a
	 *	given register on a PHY.  It sends the appropriate info and then
	 *	writes the 16-bit register value from the MII configuration bus
	 *	via the TLAN SIO register.
	 *
	 ************************************************************************/

		void TLan_MiiWriteReg(u16 base_port, u16 dev, u16 reg, u16 val)
		{
			u16 sio;

			outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
			sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;

			cli();

			TLan_MiiSync( base_port );

			TLan_ClearBit( TLAN_NET_SIO_MINTEN, sio );

			TLan_MiiSendData( base_port, 0x1, 2 );			/* Start ( 01b ) */
			TLan_MiiSendData( base_port, 0x1, 2 );			/* Write ( 01b ) */
			TLan_MiiSendData( base_port, dev, 5 );			/* Device #      */
			TLan_MiiSendData( base_port, reg, 5 );			/* Register #    */

			TLan_MiiSendData( base_port, 0x2, 2 );			/* Send ACK */
			TLan_MiiSendData( base_port, val, 16 );			/* Send Data */

			TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );		/* Idle cycle */
			TLan_SetBit( TLAN_NET_SIO_MCLK, sio );

			TLan_SetBit( TLAN_NET_SIO_MINTEN, sio );

			sti();

		} /* TLan_MiiWriteReg */




/*****************************************************************************
******************************************************************************

	ThunderLAN Driver PHY Layer Routines

	The TLAN chip can drive any number of PHYs (physical devices).  Rather
	than having lots of 'if' or '#ifdef' statements, I have created a
	second driver layer for the PHYs.  Each PHY can be identified from its
	id in registers 2 and 3, and can be given a Check and Service routine
	that will be called when the adapter is reset and when the adapter
	receives a Network Status interrupt, respectively.
	
******************************************************************************
*****************************************************************************/

	static int	TLan_PhyNop( struct device * );
	static void	TLan_PhyPrint( struct device * );
	static void	TLan_PhySelect( struct device * );
	static int	TLan_PhyInternalCheck( struct device * );
	static int	TLan_PhyInternalService( struct device * );
	static int	TLan_PhyDp83840aCheck( struct device * );




	static TLanPhyIdEntry	TLanPhyIdTable[] = {
		{ 0x4000, 0x5014, &TLan_PhyInternalCheck, &TLan_PhyInternalService, TLAN_PHY_ACTIVITY },
		{ 0x4000, 0x5015, &TLan_PhyInternalCheck, &TLan_PhyInternalService, TLAN_PHY_ACTIVITY },
		{ 0x2000, 0x5C01, &TLan_PhyDp83840aCheck, &TLan_PhyNop, TLAN_PHY_ACTIVITY | TLAN_PHY_AUTONEG },
		{ 0x0000, 0x0000, NULL, NULL, 0 }
	};




    /*************************************************************************
     *  TLan_PhyPrint
	 *
	 *	Returns:	Nothing
	 *	Parms:		dev		A pointer to the device structure of the adapter
	 *						which the desired PHY is located.
	 *				
	 *	This function prints the registers a PHY.
     *
     ************************************************************************/

        void TLan_PhyPrint( struct device *dev )
        {
            TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv;
            u16 i, data0, data1, data2, data3, phy;
            u32 io;

            phy = priv->phyAddr;
            io = dev->base_addr;

            if ( ( phy > 0 ) || ( phy <= TLAN_PHY_MAX_ADDR ) ) {
                printk( "TLAN:   Device %s, PHY 0x%02x.\n", dev->name, phy );
                printk( "TLAN:      Off.  +0     +1     +2     +3 \n" );
                for ( i = 0; i < 0x20; i+= 4 ) {
                    TLan_MiiReadReg( io, phy, i, &data0 );
                    TLan_MiiReadReg( io, phy, i + 1, &data1 );
                    TLan_MiiReadReg( io, phy, i + 2, &data2 );
                    TLan_MiiReadReg( io, phy, i + 3, &data3 );
                    printk( "TLAN:      0x%02x  0x%04hx 0x%04hx 0x%04hx 0x%04hx\n", i, data0, data1, data2, data3 );
                }
            } else {
                printk( "TLAN:   Device %s, PHY 0x%02x (Invalid).\n", dev->name, phy );
            }

        } /* TLan_PhyPrint */




    /*************************************************************************
     *  TLan_PhySelect
	 *
	 *	Returns:	Nothing
	 *	Parms:		dev		A pointer to the device structure of the adapter
	 *						for which the PHY needs determined.
     *
	 *	This function decides which PHY amoung those attached to the TLAN chip
	 *	is to be used.  The TLAN chip can be attached to multiple PHYs, and
	 *	the driver needs to decide which one to talk to.  Currently this
	 *	routine picks the PHY with the lowest address as the internal PHY
	 *	address is 0x1F, the highest possible.  This strategy assumes that
	 *	there can be only one other PHY, and, if it exists, it is the one to
	 *	be used.  If token ring PHYs are ever supported, this routine will
	 *	become a little more interesting...
	 *
     ************************************************************************/

		void TLan_PhySelect( struct device *dev )
		{
			int				err;
			int 			phy;
			int				entry;
			u16				id_hi;
			u16				id_lo;
			TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv;
			u16				val;

			priv->phyCheck = &TLan_PhyNop;		// Make absolutely sure these aren't NULL
			priv->phyService = &TLan_PhyNop;

			for ( phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++ ) {
				err = TLan_MiiReadReg( dev->base_addr, phy, 0, &val );
				if ( ! err ) {
					TLan_MiiReadReg( dev->base_addr, phy, MII_GEN_ID_HI, &id_hi );
					TLan_MiiReadReg( dev->base_addr, phy, MII_GEN_ID_LO, &id_lo );
					entry = 0;
					while ( ( TLanPhyIdTable[entry].idHi != 0 ) && ( TLanPhyIdTable[entry].idLo != 0 ) ) {
						if ( ( TLanPhyIdTable[entry].idHi == id_hi ) && ( TLanPhyIdTable[entry].idLo == id_lo ) ) {
							priv->phyAddr = phy;
							priv->phyEntry = entry;
							priv->phyCheck = TLanPhyIdTable[entry].check;
							priv->phyService = TLanPhyIdTable[entry].service;
							priv->phyFlags = TLanPhyIdTable[entry].flags;
							break;
						}
						entry++;
					}
					break;
				}
			}

		} /* TLan_PhySelect */




    /*************************************************************************
     *  TLan_PhyNop
     *
	 *	Returns:	Nothing
	 *	Parms:		dev		A pointer to a device structure.
	 *
	 *	This function does nothing and is meant as a stand-in for when
	 *	a Check or Service function would be meaningless.
	 *
     ************************************************************************/

		int TLan_PhyNop( struct device *dev )
		{
			dev = NULL;
			return 0;

		} /* TLan_PhyNop */




    /*************************************************************************
     *  TLan_PhyInternalCheck
     *
	 *	Returns:	Nothing
	 *	Parms:		dev		A pointer to a device structure of the adapter
	 *						holding the PHY to be checked.
	 *
	 *	This function resets the internal PHY on a TLAN chip.  See Chap. 7,
	 *	"Physical Interface (PHY)" of "ThunderLAN Programmer's Guide"
     *
     ************************************************************************/

		int TLan_PhyInternalCheck( struct device *dev )
		{
			u16				gen_ctl;
			int				i;
			u32				io;
			u16				phy;
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;
			u16				value;

			io = dev->base_addr;
			phy = priv->phyAddr;

			TLan_MiiReadReg( io, phy, MII_GEN_CTL, &gen_ctl );
			if ( gen_ctl & MII_GC_PDOWN ) {
				TLan_MiiSync( io );
            	TLan_MiiWriteReg( io, phy, MII_GEN_CTL, MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE );
            	TLan_MiiWriteReg( io, phy, MII_GEN_CTL, MII_GC_LOOPBK );
				for ( i = 0; i < 500000; i++ )
					SLOW_DOWN_IO;
            	TLan_MiiWriteReg( io, phy, MII_GEN_CTL, MII_GC_RESET | MII_GC_LOOPBK );
            	TLan_MiiSync( io );
			}

            TLan_MiiReadReg( io, phy, MII_GEN_CTL, &value );
           	while ( value & MII_GC_RESET )
               	TLan_MiiReadReg( io, phy, MII_GEN_CTL, &value );

            // TLan_MiiWriteReg( io, phy, MII_GEN_CTL, MII_GC_LOOPBK | MII_GC_DUPLEX );
            // TLan_MiiWriteReg( io, phy, MII_GEN_CTL, MII_GC_DUPLEX );
            TLan_MiiWriteReg( io, phy, MII_GEN_CTL, 0 );

				for ( i = 0; i < 500000; i++ )
					SLOW_DOWN_IO;

			// Read Possible Latched Link Status
            TLan_MiiReadReg( io, phy, MII_GEN_STS, &value ); 
			// Read Real Link Status
            TLan_MiiReadReg( io, phy, MII_GEN_STS, &value ); 
			if ( value & MII_GS_LINK ) {
				priv->phyOnline = 1;
				TLan_DioWrite8( io, TLAN_LED_REG, TLAN_LED_LINK );
			} else {
				priv->phyOnline = 0;
				TLan_DioWrite8( io, TLAN_LED_REG, 0 );
			}

			// Enable Interrupts
            TLan_MiiReadReg( io, phy, TLAN_TLPHY_CTL, &value );
            value |= TLAN_TC_INTEN;
            TLan_MiiWriteReg( io, phy, TLAN_TLPHY_CTL, value );
			
			return 0;

		} /* TLanPhyInternalCheck */




    /*************************************************************************
     *  TLan_PhyInternalService
     *
	 *	Returns:	Nothing
	 *	Parms:		dev		A pointer to a device structure of the adapter
	 *						holding the PHY to be serviced.
	 *
	 *	This function services an interrupt generated by the internal PHY.
	 *	It can turn on/off the link LED.  See Chap. 7,
	 *	"Physical Interface (PHY)" of "ThunderLAN Programmer's Guide".
     *
     ************************************************************************/

		int TLan_PhyInternalService( struct device *dev )
		{
			u16				tlphy_sts;
			u16				gen_sts;
			u16				an_exp;
			u32				io;
			u16				phy;
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;

			io = dev->base_addr;
			phy = priv->phyAddr;

			TLan_MiiReadReg( io, phy, TLAN_TLPHY_STS, &tlphy_sts );
           	TLan_MiiReadReg( io, phy, MII_GEN_STS, &gen_sts ); 
           	TLan_MiiReadReg( io, phy, MII_AN_EXP, &an_exp ); 
			if ( gen_sts & MII_GS_LINK ) {
				priv->phyOnline = 1;
				TLan_DioWrite8( io, TLAN_LED_REG, TLAN_LED_LINK );
			} else {
				priv->phyOnline = 0;
				TLan_DioWrite8( io, TLAN_LED_REG, 0 );
			}

			return 0;

		} /* TLan_PhyInternalService */




    /*************************************************************************
     *  TLan_PhyDp83840aCheck
     *
	 *	Returns:	Nothing
	 *	Parms:		dev		A pointer to a device structure of the adapter
	 *						holding the PHY to be reset.
	 *
	 *	This function resets a National Semiconductor DP83840A 10/100 Mb/s
	 *	PHY device.  See National Semiconductor's data sheet for more info.
	 *	This PHY is used on Compaq Netelligent 10/100 cards.
     *
     ************************************************************************/

		static int	TLan_PhyDp83840aCheck( struct device *dev )
		{
			u16				gen_ctl;
			int				i;
			u32				io;
			u16				phy;
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;
			u16				value;

			io = dev->base_addr;
			phy = priv->phyAddr;

			TLan_MiiReadReg( io, phy, MII_GEN_CTL, &gen_ctl );
			if ( gen_ctl & MII_GC_PDOWN ) {
				TLan_MiiSync( io );
            	TLan_MiiWriteReg( io, phy, MII_GEN_CTL, MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE );
            	TLan_MiiWriteReg( io, phy, MII_GEN_CTL, MII_GC_LOOPBK );
				for ( i = 0; i < 500000; i++ )
					SLOW_DOWN_IO;
            	TLan_MiiWriteReg( io, phy, MII_GEN_CTL, MII_GC_RESET | MII_GC_LOOPBK );
            	TLan_MiiSync( io );
			}

            TLan_MiiReadReg( io, phy, MII_GEN_CTL, &value );
           	while ( value & MII_GC_RESET )
               	TLan_MiiReadReg( io, phy, MII_GEN_CTL, &value );

            // TLan_MiiWriteReg( io, phy, MII_GEN_CTL, MII_GC_LOOPBK | MII_GC_DUPLEX );
            // TLan_MiiWriteReg( io, phy, MII_GEN_CTL, MII_GC_DUPLEX );
            TLan_MiiWriteReg( io, phy, MII_GEN_CTL, 0 );
            TLan_MiiWriteReg( io, phy, MII_GEN_CTL, 0x1000 );
			TLan_MiiWriteReg( io, phy, MII_GEN_CTL, 0x1200 );

				for ( i = 0; i < 50000; i++ )
					SLOW_DOWN_IO;

/*
			// Read Possible Latched Link Status
            TLan_MiiReadReg( io, phy, MII_GEN_STS, &value ); 
			// Read Real Link Status
            TLan_MiiReadReg( io, phy, MII_GEN_STS, &value ); 
			if ( value & MII_GS_LINK ) {
				priv->phyOnline = 1;
				TLan_DioWrite8( io, TLAN_LED_REG, TLAN_LED_LINK );
			} else {
				priv->phyOnline = 0;
				TLan_DioWrite8( io, TLAN_LED_REG, 0 );
			}

			// Enable Interrupts
            TLan_MiiReadReg( io, phy, TLAN_TLPHY_CTL, &value );
            value |= TLAN_TC_INTEN;
            TLan_MiiWriteReg( io, phy, TLAN_TLPHY_CTL, value );
*/
			priv->phyOnline = 1;
			
			return 0;

		} /* TLan_PhyDp83840aCheck */




/*****************************************************************************
******************************************************************************

	ThunderLAN Driver Adapter Related Routines

******************************************************************************
*****************************************************************************/



	static void TLan_ResetLists( struct device * );
	static void	TLan_PrintDio( u16 );
	static void TLan_PrintList( TLanList *, char *, int );
	static void	TLan_ReadAndClearStats( struct device *, int );
	static int	TLan_Reset( struct device * );
	static void TLan_SetMac( struct device *, int areg, char *mac );




	/*************************************************************************
	 *	TLan_ResetLists
	 *  
	 *  Returns:	Nothing
	 *	Parms:		dev		The device structure with the list stuctures to
	 *						be reset.
	 *
	 *	This routine sets the variables associated with managing the TLAN
	 *	lists to their initial values.
	 *
	 ************************************************************************/

		void TLan_ResetLists( struct device *dev )
		{
			int             i;
			TLanList        *list;
			TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv;

			priv->txHead = 0;
			priv->txTail = 0;
			for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) {
				list = priv->txList + i;
				list->cStat = TLAN_CSTAT_UNUSED;
				list->buffer[0].address = virt_to_bus( priv->txBuffer + ( i * TLAN_MAX_FRAME_SIZE ) );
				list->buffer[2].count = 0;
				list->buffer[2].address = 0;
			}

			priv->rxHead = 0;
			priv->rxTail = TLAN_NUM_RX_LISTS - 1;
			for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) {
				list = priv->rxList + i;
				list->cStat = TLAN_CSTAT_READY;
				list->frameSize = TLAN_MAX_FRAME_SIZE;
				list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
				list->buffer[0].address = virt_to_bus( priv->rxBuffer + ( i * TLAN_MAX_FRAME_SIZE ) );
				list->buffer[1].count = 0;
				list->buffer[1].address = 0;
				if ( i < TLAN_NUM_RX_LISTS - 1 )
					list->forward = virt_to_bus( list + 1 );
				else
					list->forward = 0;
			}

		} /* TLan_ResetLists */




	/*************************************************************************
	 *	TLan_PrintDio
	 *  
	 *  Returns:	Nothing
	 *	Parms:		io_base		Base IO port of the device of which to print
	 *							DIO registers.
	 *
	 *	This function prints out all the the internal (DIO) registers of a
	 *	TLAN chip.
	 *
	 ************************************************************************/

		void TLan_PrintDio( u16 io_base )
		{
			u32 data0, data1;
			int	i;

			printk( "TLAN:   Contents of internal registers for io base 0x%04hx.\n", io_base );
			printk( "TLAN:      Off.  +0         +4\n" );
			for ( i = 0; i < 0x4C; i+= 8 ) {
				data0 = TLan_DioRead32( io_base, i );
				data1 = TLan_DioRead32( io_base, i + 0x4 );
				printk( "TLAN:      0x%02x  0x%08x 0x%08x\n", i, data0, data1 );
			}

		} /* TLan_PrintDio */




	/*************************************************************************
	 *	TLan_PrintList
	 *  
	 *  Returns:	Nothing
	 *	Parms:		list	A pointer to the TLanList structure to be printed.
	 *				type	A string to designate type of list, "Rx" or "Tx".
	 *				num		The index of the list.
	 *
	 *	This function prints out the contents of the list pointed to by the
	 *	list parameter.
	 *
	 ************************************************************************/

		void TLan_PrintList( TLanList *list, char *type, int num)
		{
			int i;

			printk( "TLAN:   %s List %d at 0x%08x\n", type, num, (u32) list );
			printk( "TLAN:      Forward    = 0x%08x\n",  list->forward );
			printk( "TLAN:      CSTAT      = 0x%04hx\n", list->cStat );
			printk( "TLAN:      Frame Size = 0x%04hx\n", list->frameSize );
			for ( i = 0; i < 10; i++ ) {
				printk( "TLAN:      Buffer[%d].count, addr = 0x%08x, 0x%08x\n", i, list->buffer[i].count, list->buffer[i].address );
			}

		} /* TLan_PrintList */




	/*************************************************************************
	 *	TLan_ReadAndClearStats
	 *
	 *	Returns:	Nothing
	 *	Parms:		dev		Pointer to device structure of adapter to which
	 *						to read stats.
	 *				record	Flag indicating whether to add 
	 *
	 *	This functions reads all the internal status registers of the TLAN
	 *	chip, which clears them as a side effect.  It then either adds the
	 *	values to the device's status struct, or discards them, depending
	 *	on whether record is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
	 *
	 ************************************************************************/

		void TLan_ReadAndClearStats( struct device *dev, int record )
		{
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;
			u32				tx_good, tx_under;
			u32				rx_good, rx_over;
			u32				def_tx, crc, code;
			u32				multi_col, single_col;
			u32				excess_col, late_col, loss;

			outw( TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR );
			tx_good  = inb( dev->base_addr + TLAN_DIO_DATA );
			tx_good += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
			tx_good += inb( dev->base_addr + TLAN_DIO_DATA + 2 ) << 16;
			tx_under = inb( dev->base_addr + TLAN_DIO_DATA + 3 );

			outw( TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR );
			rx_good  = inb( dev->base_addr + TLAN_DIO_DATA );
			rx_good += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
			rx_good += inb( dev->base_addr + TLAN_DIO_DATA + 2 ) << 16;
			rx_over  = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
			
			outw( TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR );
			def_tx  = inb( dev->base_addr + TLAN_DIO_DATA );
			def_tx += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
			crc     = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
			code    = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
			
			outw( TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR );
			multi_col   = inb( dev->base_addr + TLAN_DIO_DATA );
			multi_col  += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
			single_col  = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
			single_col += inb( dev->base_addr + TLAN_DIO_DATA + 3 ) << 8;

			outw( TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR );
			excess_col = inb( dev->base_addr + TLAN_DIO_DATA );
			late_col   = inb( dev->base_addr + TLAN_DIO_DATA + 1 );
			loss       = inb( dev->base_addr + TLAN_DIO_DATA + 2 );

			if ( record ) {
				priv->stats.rx_packets += rx_good;
				priv->stats.rx_errors  += rx_over + crc + code;
				priv->stats.tx_packets += tx_good;
				priv->stats.tx_errors  += tx_under + loss;
				priv->stats.collisions += multi_col + single_col + excess_col + late_col;

				priv->stats.rx_over_errors    += rx_over;
				priv->stats.rx_crc_errors     += crc;
				priv->stats.rx_frame_errors   += code;

				priv->stats.tx_aborted_errors += tx_under;
				priv->stats.tx_carrier_errors += loss;
			}
			
		} /* TLan_ReadAndClearStats */




	/*************************************************************************
	 *	TLan_Reset
	 *
	 *	Returns:	0
	 *	Parms:		dev		Pointer to device structure of adapter to be
	 *						reset.
	 *
	 *	This function resets the adapter and it's physical device.  See
	 *	Chap. 3, pp. 9-10 of the "ThunderLAN Programmer's Guide" for details.
	 *	The routine tries to implement what is detailed there, though
	 *	adjustments have been made.
	 *
	 ************************************************************************/

		int TLan_Reset( struct device *dev )
		{
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;
			int i;
			u32	data;
			u8	data8;

		//	1.  Assume Stat registers have been dealt with.
		//	2.  Assert reset bit.
			data = inl(dev->base_addr + TLAN_HOST_CMD);
			data |= TLAN_HC_AD_RST;
			outl(data, dev->base_addr + TLAN_HOST_CMD);
		//	3.  Turn off interrupts.
			data = inl(dev->base_addr + TLAN_HOST_CMD);
			data |= TLAN_HC_INT_OFF;
			outl(data, dev->base_addr + TLAN_HOST_CMD);
		//	4.	Setup AREGs and HASHs.
		 	for ( i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4 )
				TLan_DioWrite32( dev->base_addr, (u16) i, 0 );
		//	5.	Setup NetConfig register.
			outw(TLAN_NET_CONFIG, dev->base_addr + TLAN_DIO_ADR);
			outw(TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN, dev->base_addr + TLAN_DIO_DATA);
		//	6.	Setup BSIZE register.
		//		Accept defaults, 0x22, for now.
		//	7.	Setup TX commit in Acommit.
		//		Allow it to manage itself.
		//	8.	Load Ld_Tmr in HOST_CMD.
		//		I don't know what this value should be.  I'll try 3.
		 	outl( TLAN_HC_LD_TMR | 0x0, dev->base_addr + TLAN_HOST_CMD );
		//	9.	Load Ld_Thr in HOST_CMD.
		//		Try 1 for now.
		 	outl( TLAN_HC_LD_THR | 0x1, dev->base_addr + TLAN_HOST_CMD );
		//	10. Unreset the MII by setting NMRST (in NetSio) to 1.
			outw( TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR );
			TLan_SetBit( TLAN_NET_SIO_NMRST, dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO );
		//	10a. Other.
		//	12. Setup the NetMask register.
		TLan_DioWrite8( dev->base_addr, TLAN_INT_DIS, TLAN_ID_TX_EOC | TLAN_ID_RX_EOC );
		//TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP | TLAN_NET_CMD_DUPLEX | TLAN_NET_CMD_CAF );
		TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP );
		//	11. Initialize PHYs.
		TLan_PhySelect( dev );
		(*priv->phyCheck)( dev ); 
		if ( debug >= 1 )
			TLan_PhyPrint( dev );

		//data8 = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5 | TLAN_NET_MASK_MASK6 | TLAN_NET_MASK_MASK7; 
		data8 = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5 | TLAN_NET_MASK_MASK7; 
		TLan_DioWrite8( dev->base_addr, TLAN_NET_MASK, data8 );
		TLan_DioWrite16( dev->base_addr, TLAN_MAX_RX, 1550 );
		 /*
		  *	13. Turn on interrupts to host.
		  *		I don't want any interrupts, yet.
		  */
			/*
			data = inl(base_port + TLAN_HOST_CMD);
			data |= TLAN_HC_INT_ON;
			outl(data, base_port + TLAN_HOST_CMD);
			*/

			return 0;

		} /* TLan_Reset */




	/*************************************************************************
	 *	TLan_SetMac
	 *
	 *	Returns:	Nothing
	 *	Parms:		dev		Pointer to device structure of adapter on which to
	 *						change the AREG.
	 *				areg	The AREG to set the address in (0 - 3).
	 *				mac		A pointer to an array of chars.  Each element
	 *						stores one byte of the address.  IE, it isn't
	 *						in ascii.
	 *
	 *	This function transfers a MAC address to one of the TLAN AREGs
	 *	(address registers).  The TLAN chip locks the register on writing to
	 *	offset 0 and unlocks the register after writing to offset 5.  If NULL
	 *	is passed in mac, then the AREG is filled with 0's.
	 *
	 ************************************************************************/

		void TLan_SetMac( struct device *dev, int areg, char *mac )
		{
			int i;
			
			areg *= 6;

			if ( mac != NULL ) {
				for ( i = 0; i < 6; i++ )
					TLan_DioWrite8( dev->base_addr, TLAN_AREG_0 + areg + i, mac[i] );
			} else {
				for ( i = 0; i < 6; i++ )
					TLan_DioWrite8( dev->base_addr, TLAN_AREG_0 + areg + i, 0 );
			}

		} /* TLan_SetMac */




/*****************************************************************************
******************************************************************************

	ThunderLAN Driver Eeprom routines

	The Compaq Netelligent 10 and 10/100 cards use a Microchip 24C02A EEPROM.
	These functions are based on information in Microchip's data sheet.  I
	don't know how well this functions will work with other EEPROMs.

******************************************************************************
*****************************************************************************/

		static void TLan_EeSendStart( u16 );
		static int	TLan_EeSendByte( u16, u8, int );
		static void TLan_EeReceiveByte( u16, u8 *, int );
		static int	TLan_EeReadByte( u16, u8, u8 * );




	/*************************************************************************
	 *	TLan_EeSendStart
	 *
	 *	Returns:	Nothing
	 *	Parms:		io_base		The IO port base address for the TLAN device
	 *							with the EEPROM to use.
	 *
	 *	This function sends a start cycle to an EEPROM attached to a TLAN
	 *	chip.
	 *
	 ************************************************************************/

		void TLan_EeSendStart( u16 io_base )
		{
			u16 sio;

			outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
			sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;

			TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
			TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
			TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
			//
			// FIXME: Do I really need these SLOW_DOWN_IOs?
			//
			SLOW_DOWN_IO;
			TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
			SLOW_DOWN_IO;
			TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
			SLOW_DOWN_IO;

		} /* TLan_EeSendStart */




	/*************************************************************************
	 *	TLan_EeSendByte
	 *
	 *	Returns:	If the correct ack was received, 0, otherwise 1
	 *	Parms:		io_base		The IO port base address for the TLAN device
	 *							with the EEPROM to use.
	 *				data		The 8 bits of information to send to the
	 *							EEPROM.
	 *				stop		If TLAN_EEPROM_STOP is passed, a stop cycle is
	 *							sent after the byte is sent after the ack is
	 *							read.
	 *
	 *	This function sends a byte on the serial EEPROM line, driving the
	 *	clock to send each bit. The function then reverses transmission
	 *	direction and reads an acknowledge bit.
	 *
	 ************************************************************************/

		int	TLan_EeSendByte( u16 io_base, u8 data, int stop )
		{
			int err;
			u8  place;
			u16 sio;

			outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
			sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;

			// Assume clock is low, tx is enabled;
			for ( place = 0x80; place; place >>= 1 ) {
				if ( place & data )
					TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
				else
					TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
				TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
				TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
			}
			TLan_ClearBit( TLAN_NET_SIO_ETXEN, sio );
			TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
			err = TLan_GetBit( TLAN_NET_SIO_EDATA, sio );
			TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
			TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );

			if ( ( ! err ) && stop ) {
				TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );	// STOP, raise data while clock is high
				TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
				TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
			}

			return ( err );

		} /* TLan_EeSendByte */




	/*************************************************************************
	 *	TLan_EeReceiveByte
	 *
	 *	Returns:	Nothing
	 *	Parms:		io_base		The IO port base address for the TLAN device
	 *							with the EEPROM to use.
	 *				data		An address to a char to hold the data sent
	 *							from the EEPROM.
	 *				stop		If TLAN_EEPROM_STOP is passed, a stop cycle is
	 *							sent after the byte is received, and no ack is
	 *							sent.
	 *
	 *	This function receives 8 bits of data from the EEPROM over the serial
	 *	link.  It then sends and ack bit, or no ack and a stop bit.  This
	 *	function is used to retrieve data after the address of a byte in the
	 *	EEPROM has been sent.
	 *
	 ************************************************************************/

		void TLan_EeReceiveByte( u16 io_base, u8 *data, int stop )
		{
			u8  place;
			u16 sio;

			outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
			sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
			*data = 0;

			// Assume clock is low, tx is enabled;
			TLan_ClearBit( TLAN_NET_SIO_ETXEN, sio );
			for ( place = 0x80; place; place >>= 1 ) {
				TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
				if ( TLan_GetBit( TLAN_NET_SIO_EDATA, sio ) )
					*data |= place;
				TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
			}

			TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
			if ( ! stop ) {
				TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );	// Ack = 0
				TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
				TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
			} else {
				TLan_SetBit( TLAN_NET_SIO_EDATA, sio );		// No ack = 1 (?)
				TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
				TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
				TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );	// STOP, raise data while clock is high
				TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
				TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
			}

		} /* TLan_EeReceiveByte */




	/*************************************************************************
	 *	TLan_EeReadByte
	 *
	 *	Returns:	No error = 0, else, the stage at which the error occured.
	 *	Parms:		io_base		The IO port base address for the TLAN device
	 *							with the EEPROM to use.
	 *				ee_addr		The address of the byte in the EEPROM whose
	 *							contents are to be retrieved.
	 *				data		An address to a char to hold the data obtained
	 *							from the EEPROM.
	 *
	 *	This function reads a byte of information from an byte cell in the
	 *	EEPROM.
	 *
	 ************************************************************************/

		int TLan_EeReadByte( u16 io_base, u8 ee_addr, u8 *data )
		{
			int err;

			cli();

			TLan_EeSendStart( io_base );
			err = TLan_EeSendByte( io_base, 0xA0, TLAN_EEPROM_ACK );
			if (err)
				return 1;
			err = TLan_EeSendByte( io_base, ee_addr, TLAN_EEPROM_ACK );
			if (err)
				return 2;
			TLan_EeSendStart( io_base );
			err = TLan_EeSendByte( io_base, 0xA1, TLAN_EEPROM_ACK );
			if (err)
				return 3;
			TLan_EeReceiveByte( io_base, data, TLAN_EEPROM_STOP );

			sti();

			return 0;

		} /* TLan_EeReadByte */




/*****************************************************************************
******************************************************************************

        ThunderLAN Driver Interrupt Vectors and Table

		Please see Chap. 4, "Interrupt Handling" of the
		"ThunderLAN Programmer's Guide" for more informations on handling
		interrupts generated by TLAN based adapters.  

******************************************************************************
*****************************************************************************/

	static u32 TLan_HandleInvalid( struct device *, u16 );
	static u32 TLan_HandleTxEOF( struct device *, u16 );
	static u32 TLan_HandleStatOverflow( struct device *, u16 );
	static u32 TLan_HandleRxEOF( struct device *, u16 );
	static u32 TLan_HandleDummy( struct device *, u16 );
	static u32 TLan_HandleTxEOC( struct device *, u16 );
	static u32 TLan_HandleStatusCheck( struct device *, u16 );
	static u32 TLan_HandleRxEOC( struct device *, u16 );




	typedef u32 (TLanIntVectorFunc)( struct device *, u16 );
	



	/*************************************************************************
	 *	TLan_HandleInvalid
	 *
	 *	Returns:	0
	 *	Parms:		dev			Device assigned the IRQ that was raised.
	 *				host_int	The contents of the HOST_INT port.
	 *
	 *	This function handles invalid interrupts.  This should never happen
	 *	unless some other adapter is trying to use the IRQ line assigned to
	 *	the device.
	 *
	 ************************************************************************/

		u32 TLan_HandleInvalid( struct device *dev, u16 host_int )
		{
			host_int = 0;
			// printk( "TLAN:  Invalid interrupt on %s.\n", dev->name );
			return 0;

		} /* TLan_HandleInvalid */


	/*************************************************************************
	 *	TLan_HandleTxEOF
	 *
	 *	Returns:	1
	 *	Parms:		dev			Device assigned the IRQ that was raised.
	 *				host_int	The contents of the HOST_INT port.
	 *
	 *	This function handles Tx EOF interrupts which are raised by the
	 *	adapter when it has completed sending the contents of a buffer.  If
	 *	detemines which list/buffer was completed and resets it.  If the
	 *	buffer was the last in the channel (EOC), then the function checks
	 *	to see if another buffer is ready to send, and if so, sends a Tx Go
	 *	command.  Finally, the driver activates/continues the activity LED.
	 *
	 ************************************************************************/

		u32 TLan_HandleTxEOF( struct device *dev, u16 host_int )
		{
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;
			int				eoc = 0;
			TLanList		*head_list;
			u32				ack = 1;

			// printk( "TLAN:  Handling Tx EOF\n" );
			host_int = 0;
			head_list = priv->txList + priv->txHead;
			if ( head_list->cStat & TLAN_CSTAT_EOC )
				eoc = 1;
			if ( ! head_list->cStat & TLAN_CSTAT_FRM_CMP ) {
				printk( "TLAN:  Received interrupt for uncompleted TX frame.\n" );
			}
			// printk( "Ack %d CSTAT=%hx\n", priv->txHead, head_list->cStat );
			head_list->cStat = TLAN_CSTAT_UNUSED;
			dev->tbusy = 0;
			priv->txHead++;
			if ( priv->txHead >= TLAN_NUM_TX_LISTS )
				priv->txHead = 0;
			if ( eoc ) {
				// printk( "TLAN:  Handling Tx EOC\n" );
				head_list = priv->txList + priv->txHead;
				if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
					outl( virt_to_bus( head_list ), dev->base_addr + TLAN_CH_PARM );
					ack |= TLAN_HC_GO;
				} else {
					priv->txInProgress = 0;
				}
			}
			TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT );
			if ( priv->phyFlags & TLAN_PHY_ACTIVITY ) {
				if ( priv->timerSetAt == 0 ) {
					// printk("TxEOF Starting timer...\n");
					priv->timerSetAt = jiffies;
					priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
					priv->timerType = TLAN_TIMER_ACT;
					add_timer( &priv->timer );
				} else if ( priv->timerType == TLAN_TIMER_ACT ) {
					priv->timerSetAt = jiffies;
					// printk("TxEOF continuing timer...\n");
				}
			}

			return ack;

		} /* TLan_HandleTxEOF */




	/*************************************************************************
	 *	TLan_HandleStatOverflow
	 *
	 *	Returns:	1
	 *	Parms:		dev			Device assigned the IRQ that was raised.
	 *				host_int	The contents of the HOST_INT port.
	 *
	 *	This function handles the Statistics Overflow interrupt which means
	 *	that one or more of the TLAN statistics registers has reached 1/2
	 *	capacity and needs to be read.
	 *
	 ************************************************************************/

		u32 TLan_HandleStatOverflow( struct device *dev, u16 host_int )
		{
			host_int = 0;
			TLan_ReadAndClearStats( dev, TLAN_RECORD );

			return 1;

		} /* TLan_HandleStatOverflow */




	/*************************************************************************
	 *	TLan_HandleRxEOF
	 *
	 *	Returns:	1
	 *	Parms:		dev			Device assigned the IRQ that was raised.
	 *				host_int	The contents of the HOST_INT port.
	 *
	 *	This function handles the Rx EOF interrupt which indicates a frame
	 *	has been received by the adapter from the net and the frame has been
	 *	transferred to memory.  The function determines the bounce buffer
	 *	the frame has been loaded into, creates a new sk_buff big enough to
	 *	hold the frame, and sends it to protocol stack.  It then resets the
	 *	used buffer and appends it to the end of the list.  If the frame was
	 *	the last in the Rx channel (EOC), the function restarts the receive
	 *	channel by sending an Rx Go command to the adapter.  Then it activates/
	 *	continues the the activity LED.
	 *
	 ************************************************************************/

		u32 TLan_HandleRxEOF( struct device *dev, u16 host_int )
		{
			u32				ack = 1;
			int				eoc = 0;
			u8				*head_buffer;
			TLanList		*head_list;
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;
			struct sk_buff	*skb;
			TLanList		*tail_list;
			void			*t;

			// printk( "TLAN:  Handling Rx EOF Head=%d Tail=%d\n", priv->rxHead, priv->rxTail );
			host_int = 0;
			head_list = priv->rxList + priv->rxHead;
			tail_list = priv->rxList + priv->rxTail;
			if ( head_list->cStat & TLAN_CSTAT_EOC )
				eoc = 1;
			if ( ! head_list->cStat & TLAN_CSTAT_FRM_CMP ) {
				printk( "TLAN:  Received interrupt for uncompleted RX frame.\n" );
			} else {
				skb = dev_alloc_skb( head_list->frameSize + 7 );
				if ( skb == NULL ) { 
					printk( "TLAN:  Couldn't allocate memory for received data.\n" );
				} else {
					head_buffer = priv->rxBuffer + ( priv->rxHead * TLAN_MAX_FRAME_SIZE );
					skb->dev = dev;
					skb_reserve( skb, 2 );
					t = (void *) skb_put( skb, head_list->frameSize );
					// printk( " %hd %p %p\n", head_list->frameSize, skb->data, t );
					memcpy( t, head_buffer, head_list->frameSize );
					skb->protocol = eth_type_trans( skb, dev );
					netif_rx( skb );
				}
			}
			head_list->forward = 0;
			head_list->frameSize = TLAN_MAX_FRAME_SIZE;
			head_list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
			tail_list->forward = virt_to_bus( head_list );
			priv->rxHead++;
			if ( priv->rxHead >= TLAN_NUM_RX_LISTS )
				priv->rxHead = 0;
			priv->rxTail++;
			if ( priv->rxTail >= TLAN_NUM_RX_LISTS )
				priv->rxTail = 0;
			if ( eoc ) { 
				// printk( "TLAN:  Handling Rx EOC Head=%d Tail=%d\n", priv->rxHead, priv->rxTail );
				head_list = priv->rxList + priv->rxHead;
				outl( virt_to_bus( head_list ), dev->base_addr + TLAN_CH_PARM );
				ack |= TLAN_HC_GO | TLAN_HC_RT;
				priv->rxEocCount++;
			}
			TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT );
			if ( priv->phyFlags & TLAN_PHY_ACTIVITY ) {
				if ( priv->timerSetAt == 0 )  {
					// printk("RxEOF Starting timer...\n");
					priv->timerSetAt = jiffies;
					priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
					priv->timerType = TLAN_TIMER_ACT;
					add_timer( &priv->timer );
				} else if ( priv->timerType == TLAN_TIMER_ACT ) {
					// printk("RxEOF tarting continuing timer...\n");
					priv->timerSetAt = jiffies;
				}
			}
			dev->last_rx = jiffies;

			return ack;

		} /* TLan_HandleRxEOF */




	/*************************************************************************
	 *	TLan_HandleDummy
	 *
	 *	Returns:	1
	 *	Parms:		dev			Device assigned the IRQ that was raised.
	 *				host_int	The contents of the HOST_INT port.
	 *
	 *	This function handles the Dummy interrupt, which is raised whenever
	 *	a test interrupt is generated by setting the Req_Int bit of HOST_CMD
	 *	to 1.
	 *
	 ************************************************************************/

		u32 TLan_HandleDummy( struct device *dev, u16 host_int )
		{
			host_int = 0;
			printk( "TLAN:  Dummy interrupt on %s.\n", dev->name );
			return 1;

		} /* TLan_HandleDummy */




	/*************************************************************************
	 *	TLan_HandleTxEOC
	 *
	 *	Returns:	1
	 *	Parms:		dev			Device assigned the IRQ that was raised.
	 *				host_int	The contents of the HOST_INT port.
	 *
	 *	This driver is structured to determine EOC occurances by reading the
	 *	CSTAT member of the list structure.  Tx EOC interrupts are disabled
	 *	via the DIO INTDIS register.
	 *
	 ************************************************************************/

		u32 TLan_HandleTxEOC( struct device *dev, u16 host_int )
		{
			host_int = 0;
			printk( "TLAN:  Tx EOC interrupt on %s.\n", dev->name );
			return 1;

		} /* TLan_HandleTxEOC */




	/*************************************************************************
	 *	TLan_HandleStatusCheck
	 *
	 *	Returns:	0 if Adapter check, 1 if Network Status check.
	 *	Parms:		dev			Device assigned the IRQ that was raised.
	 *				host_int	The contents of the HOST_INT port.
	 *
	 *	This function handles Adapter Check/Network Status interrupts
	 *	generated by the adapter.  It checks the vector in the HOST_INT
	 *	register to determine if it is an Adapter Check interrupt.  If so,
	 *	it resets the adapter.  Otherwise it clears the status registers
	 *	and services the PHY.
	 *
	 ************************************************************************/

		u32 TLan_HandleStatusCheck( struct device *dev, u16 host_int )
		{	
			u32				ack;
			u32				error;
			u8				net_sts;
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;
			
			ack = 1;
			if ( host_int & TLAN_HI_IV_MASK ) {
				error = inl( dev->base_addr + TLAN_CH_PARM );
				printk( "TLAN:   Adaptor Check on device %s err = 0x%x\n", dev->name, error );
				TLan_ReadAndClearStats( dev, TLAN_RECORD );
				outl( TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD );
				TLan_ResetLists( dev );
				TLan_Reset( dev );
				dev->tbusy = 0;
				TLan_SetMac( dev, 0, dev->dev_addr );
				if ( priv->timerType == 0 ) {
					if ( priv->phyFlags & TLAN_PHY_AUTONEG ) {
						priv->timer.expires = jiffies + TLAN_TIMER_LINK_DELAY;
						priv->timerSetAt = jiffies;
						priv->timerType = TLAN_TIMER_LINK;
						add_timer( &priv->timer );
					} else {
						//printk( " RX GO---->\n" );
						outl( virt_to_bus( priv->rxList ), dev->base_addr + TLAN_CH_PARM );
						outl( TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD );
					}
				}
				ack = 0;
			} else {
				net_sts = TLan_DioRead8( dev->base_addr, TLAN_NET_STS );
				if ( net_sts )
					TLan_DioWrite8( dev->base_addr, TLAN_NET_STS, net_sts );
				if ( net_sts & TLAN_NET_STS_MIRQ )
					(*priv->phyService)( dev );
					
				TLAN_DBG( 1, "TLAN: Status Check! %s Net_Sts=%x\n", dev->name, (unsigned) net_sts );
			}

			return ack;

		} /* TLan_HandleStatusCheck */




	/*************************************************************************
	 *	TLan_HandleRxEOC
	 *
	 *	Returns:	1
	 *	Parms:		dev			Device assigned the IRQ that was raised.
	 *				host_int	The contents of the HOST_INT port.
	 *
	 *	This driver is structured to determine EOC occurances by reading the
	 *	CSTAT member of the list structure.  Rx EOC interrupts are disabled
	 *	via the DIO INTDIS register.
	 *
	 ************************************************************************/

		u32 TLan_HandleRxEOC( struct device *dev, u16 host_int )
		{
			host_int = 0;
			printk( "TLAN:  Rx EOC interrupt on %s.\n", dev->name );
			return 1;

		} /* TLan_HandleRxEOC */



	static TLanIntVectorFunc *TLanIntVector[TLAN_INT_NUMBER_OF_INTS] = {
		TLan_HandleInvalid,
		TLan_HandleTxEOF,
		TLan_HandleStatOverflow,
		TLan_HandleRxEOF,
		TLan_HandleDummy,
		TLan_HandleTxEOC,
		TLan_HandleStatusCheck,
		TLan_HandleRxEOC
	};




/*****************************************************************************
******************************************************************************

	ThunderLAN Driver Timer Function

******************************************************************************
*****************************************************************************/

	static void	TLan_Timer( unsigned long );




	/*************************************************************************
	 *	TLan_Timer
	 *
	 *	Returns:	Nothing
	 *	Parms:		data	A value given to add timer when add_timer was
	 *						called.
	 *
	 *	This function handles timed functionality for the TLAN driver.  The
	 *	two current timer uses are for delaying for autonegotionation and
	 *	driving the ACT LED.
	 *	-	Autonegotiation requires being allowed about 2 1/2 seconds before
	 *		attempting to transmit a packet.  It would be a very bad thing
	 *		to hang the kernel this long, so the driver doesn't allow
	 *		transmission 'til after this time, for certain PHYs.  It would
	 *		be much nicer if all PHYs were interrupt-capable like the
	 *		internal PHY.
	 *	-	The ACT LED, which shows adapter activity, is driven by the driver,
	 *		and so must be left on for a short period to power up the LED so
	 *		it can be seen.  This delay can be changed by changing the
	 *		TLAN_TIMER_ACT_DELAY in tlan.h, if desired.  10 jiffies produces a 
	 *		slightly sluggish response.
	 *
	 ************************************************************************/

		void TLan_Timer( unsigned long data )
		{
			struct device	*dev = (struct device *) data;
			u16				gen_sts;
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;

			// printk( "TLAN:  %s Entered Timer, type = %d\n", dev->name, priv->timerType );

			switch ( priv->timerType ) {
				case TLAN_TIMER_LINK:
					TLan_MiiReadReg( dev->base_addr, priv->phyAddr, MII_GEN_STS, &gen_sts );
					if ( gen_sts & MII_GS_LINK ) {
						priv->phyOnline = 1;
						outl( virt_to_bus( priv->rxList ), dev->base_addr + TLAN_CH_PARM );
						outl( TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD );
						priv->timerSetAt = 0;
						priv->timerType = 0;
					} else {
						priv->timer.expires = jiffies + ( TLAN_TIMER_LINK_DELAY * 2 );
						add_timer( &priv->timer );
					}
					break;
				case TLAN_TIMER_ACT:
					if ( jiffies - priv->timerSetAt >= TLAN_TIMER_ACT_DELAY ) {
						TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK );
						priv->timerSetAt = 0;
						priv->timerType = 0;
					} else {
						priv->timer.expires = priv->timerSetAt + TLAN_TIMER_ACT_DELAY;
						add_timer( &priv->timer );
					}
					break;
				default:
					break;
			}

		} /* TLan_Timer */




/*****************************************************************************
******************************************************************************

	ThunderLAN Driver Primary Functions

	These functions are more or less common to all Linux network drivers.

******************************************************************************
*****************************************************************************/

	static	int		TLan_PciProbe( u8 *, u8 *, u8 *, u8 *, u32 *, u32 * );
	static	int		TLan_Init( struct device * );
	static	int		TLan_Open(struct device *dev);
	static	int		TLan_StartTx(struct sk_buff *, struct device *);
	static	void	TLan_HandleInterrupt(int, void *, struct pt_regs *);
	static	int		TLan_Close(struct device *);
	static	struct enet_statistics *TLan_GetStats( struct device * );
	static	void	TLan_SetMulticastList( struct device * );


#ifdef MODULE

	/*************************************************************************
	 *	init_module
	 *
	 *	Returns:	0 if module installed ok, non-zero if not.
	 *	Parms:		None
	 *
	 *	This function begins the setup of the driver creating a pad buffer,
	 *	finding all TLAN devices (matching TLanDeviceList entries), and
	 *	creating and initializing a device structure for each adapter.
	 *
	 ************************************************************************/

		extern int init_module(void)
		{
    		int				failed, found;
			size_t			dev_size;
			struct device	*dev;
			TLanPrivateInfo	*priv;
			u8				bus, dfn, irq, rev;
			u32				io_base, dl_ix;

			printk("TLAN driver, v%d.%d, (C) 1997 Caldera, Inc.\n",
				   TLanVersionMajor,
				   TLanVersionMinor
				  );

			TLanPadBuffer = (u8 *) kmalloc( TLAN_MIN_FRAME_SIZE, GFP_KERNEL | GFP_DMA );
			if ( TLanPadBuffer == NULL ) {
				printk( "TLAN:  Could not allocate memory for pad buffer.\n" );
				return -ENOMEM;
			}
			memset( TLanPadBuffer, 0, TLAN_MIN_FRAME_SIZE );

			dev_size = sizeof(struct device) + sizeof(TLanPrivateInfo);
			while ( ( found = TLan_PciProbe( &bus, &dfn, &irq, &rev, &io_base, &dl_ix ) ) ) {
				dev = (struct device *) kmalloc( dev_size, GFP_KERNEL );
				if ( dev == NULL ) {
					printk( "TLAN:  Could not allocate memory for device.\n" );
					continue;
				}
				memset( dev, 0, dev_size );

				dev->priv = priv = ( (void *) dev ) + sizeof(struct device);
				dev->name = priv->devName;
				strcpy( priv->devName, "    " );
				dev->base_addr = io_base;
				dev->irq = irq;
				dev->init = TLan_Init;

				priv->pciBus = bus;
				priv->pciDeviceFn = dfn;
				priv->pciRevision = rev;
				priv->pciEntry = dl_ix;

				ether_setup( dev );

				failed = register_netdev( dev );

				if ( failed ) {
					printk( "TLAN:  Could not register network device.  Freeing struct.\n" );
					kfree( dev );
				} else {
					priv->nextDevice = TLanDevices;
					TLanDevices = dev;
					TLanDevicesInstalled++;
					printk("TLAN:  %s irq=%2d io=%04x, %s\n", dev->name, (int) irq, io_base, TLanDeviceList[dl_ix].deviceName );
				}
			}
			
			// printk( "TLAN:  Found %d device(s).\n", TLanDevicesInstalled );

    		return ( ( TLanDevicesInstalled >= 0 ) ? 0 : -ENODEV );

		} /* init_module */




	/*************************************************************************
	 *	cleanup_module
	 *
	 *	Returns:	Nothing
	 *	Parms:		None
	 *
	 *	Goes through the TLanDevices list and frees the device structs and
	 *	memory associated with each device (lists and buffers).  It also
	 *	ureserves the IO port regions associated with this device.
	 *
	 ************************************************************************/

		extern void cleanup_module(void)
		{
			struct device	*dev;
			TLanPrivateInfo	*priv;

			while (TLanDevicesInstalled) {
				dev = TLanDevices;
				priv = (TLanPrivateInfo *) dev->priv;
				if ( priv->dmaStorage )
					kfree( priv->dmaStorage );
				release_region( dev->base_addr, 0x10 );
				unregister_netdev( dev );
				TLanDevices = priv->nextDevice;
				kfree( dev );
				TLanDevicesInstalled--;
			}
			kfree( TLanPadBuffer );

		} /* cleanup_module */


#else /* MODULE */




	/*************************************************************************
	 *	tlan_probe
	 *
	 *	Returns:	0 on success, error code on error
	 *	Parms:		dev		device struct to use if adapter is found.
	 *
	 *	The name is lower case to fit in with all the rest of the
	 *	netcard_probe names.  This function looks for a/another TLan based
	 *	adapter, setting it up with the provided device struct if one is
	 *	found.
	 *
	 ************************************************************************/
	 
		extern int tlan_probe( struct device *dev )
		{
			static int		pad_allocated = 0;
    		int				found;
			TLanPrivateInfo	*priv;
			u8				bus, dfn, irq, rev;
			u32				io_base, dl_ix;

			found = TLan_PciProbe( &bus, &dfn, &irq, &rev, &io_base, &dl_ix );
			TLAN_DBG( 1, "TLAN:  Probing...\n" );
			if ( found ) {
				dev->priv = kmalloc( sizeof(TLanPrivateInfo), GFP_KERNEL );
				if ( dev->priv == NULL ) {
					printk( "TLAN:  Could not allocate memory for device.\n" );
				}
				memset( dev->priv, 0, sizeof(TLanPrivateInfo) );
				priv = (TLanPrivateInfo *) dev->priv;

				dev->name = priv->devName;
				strcpy( priv->devName, "    " );

				dev = init_etherdev( dev, sizeof(TLanPrivateInfo) );

				dev->base_addr = io_base;
				dev->irq = irq;

				priv->pciBus = bus;
				priv->pciDeviceFn = dfn;
				priv->pciRevision = rev;
				priv->pciEntry = dl_ix;

				if ( ! pad_allocated ) {
					TLanPadBuffer = (u8 *) kmalloc( TLAN_MIN_FRAME_SIZE, GFP_KERNEL | GFP_DMA );
					if ( TLanPadBuffer == NULL ) {
						printk( "TLAN:  Could not allocate memory for pad buffer.\n" );
					} else {
						pad_allocated = 1;
						memset( TLanPadBuffer, 0, TLAN_MIN_FRAME_SIZE );
					}
				}
				printk("TLAN %d.%d:  %s irq=%2d io=%04x, %s\n", TLanVersionMajor, 
																TLanVersionMinor,
																dev->name, 
																(int) irq, 
																io_base, 
																TLanDeviceList[dl_ix].deviceName );
				TLan_Init( dev );
			}
			
    		return ( ( found ) ? 0 : -ENODEV );

		} /* tlan_probe */


#endif /* MODULE */




	/*************************************************************************
	 *	TLan_PciProbe
	 *
	 *	Returns:	1 if another TLAN card was found, 0 if not.
	 *	Parms:		pci_bus		The PCI bus the card was found on.
	 *				pci_dfn		The PCI whatever the card was found at.
	 *				pci_irq		The IRQ of the found adapter.
	 *				pci_rev		The revision of the adapter.
	 *				pci_io_base	The first IO port used by the adapter.
	 *				dl_ix		The index in the device list of the adapter.
	 *
	 *	This function searches for an adapter with PCI vendor and device
	 *	IDs matching those in the TLanDeviceList.  The function 'remembers'
	 *	the last device it found, and so finds a new device (if anymore are
	 *	to be found) each time the function is called.  It then looks up
	 *	pertinent PCI info and returns it to the caller.
	 *
	 ************************************************************************/

		int TLan_PciProbe( u8 *pci_bus, u8 *pci_dfn, u8 *pci_irq, u8 *pci_rev, u32 *pci_io_base, u32 *dl_ix )
		{
			static int dl_index = 0;
			static int pci_index = 0;

			int not_found;
			u8	pci_latency;
			u16 pci_command;


			if ( ! pcibios_present() ) {
				printk( "TLAN:   PCI Bios not present.\n" );
				return 0;
			}

			for (; TLanDeviceList[dl_index].vendorId != 0; dl_index++) {
				not_found = pcibios_find_device( TLanDeviceList[dl_index].vendorId,
												 TLanDeviceList[dl_index].deviceId,
												 pci_index,
												 pci_bus,
												 pci_dfn
											   );
				if ( ! not_found ) {
					TLAN_DBG( 1, "TLAN:   found: Vendor Id = 0x%hx, Device Id = 0x%hx\n",
							TLanDeviceList[dl_index].vendorId,
							TLanDeviceList[dl_index].deviceId
						  );

					pcibios_read_config_byte ( *pci_bus,  *pci_dfn, PCI_REVISION_ID,	pci_rev);
					pcibios_read_config_byte ( *pci_bus,  *pci_dfn, PCI_INTERRUPT_LINE,	pci_irq);
					pcibios_read_config_word ( *pci_bus,  *pci_dfn, PCI_COMMAND,		&pci_command);
					pcibios_read_config_dword( *pci_bus,  *pci_dfn, PCI_BASE_ADDRESS_0,	pci_io_base);
					pcibios_read_config_byte ( *pci_bus,  *pci_dfn, PCI_LATENCY_TIMER,	&pci_latency);

					if (pci_latency < 0x10) {
						pcibios_write_config_byte( *pci_bus, *pci_dfn, PCI_LATENCY_TIMER, 0xff);
						TLAN_DBG( 1, "TLAN:      Setting latency timer to max.\n");
					}

					if ((pci_command & PCI_COMMAND_IO) && (*pci_io_base & 0x3)) {
						*pci_io_base &= PCI_BASE_ADDRESS_IO_MASK;
						TLAN_DBG( 1, "TLAN:      IO mapping is available at %x.\n", *pci_io_base);
					} else {
						*pci_io_base = 0;
						printk("TLAN:      IO mapping not available, ignoring device.\n");
					}

					if (pci_command & PCI_COMMAND_MASTER) {
						TLAN_DBG( 1, "TLAN:      Bus mastering is active.\n");
					}

					pci_index++;

					if ( *pci_io_base ) {
						*dl_ix = dl_index;
						return 1;
					}

				} else {
					pci_index = 0;
				}
			}

			return 0;

		} /* TLan_PciProbe */




	/*************************************************************************
	 *	TLan_Init
	 *
	 *	Returns:	0 on success, error code otherwise.
	 *	Parms:		dev		The structure of the device to be init'ed.
	 *
	 *	This function completes the initialization of the device structure
	 *	and driver.  It reserves the IO addresses, allocates memory for the
	 *	lists and bounce buffers, retrieves the MAC address from the eeprom
	 *	and assignes the device's methods.
	 *	
	 ************************************************************************/

		int TLan_Init( struct device *dev )
		{
			int				dma_size;
			int				err;
			int				i;
			TLanPrivateInfo	*priv;

			priv = (TLanPrivateInfo *) dev->priv;

			err = check_region( dev->base_addr, 0x10 );
			if ( err ) {
				printk( "TLAN:  %s: Io port region 0x%lx size 0x%x in use.\n", dev->name, dev->base_addr, 0x10 );
				return -EIO;
			}
			request_region( dev->base_addr, 0x10, TLanSignature );

			dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS ) * ( sizeof(TLanList) + TLAN_MAX_FRAME_SIZE );
			priv->dmaStorage = kmalloc( dma_size, GFP_KERNEL | GFP_DMA );
			if ( priv->dmaStorage == NULL ) {
				printk( "TLAN:  Could not allocate lists and buffers for %s.\n", dev->name );
				return -ENOMEM;
			}
			memset( priv->dmaStorage, 0, dma_size );
			priv->rxList = (TLanList *) ( ( ( (u32) priv->dmaStorage ) + 7 ) & 0xFFFFFFF8 );
			priv->txList = priv->rxList + TLAN_NUM_RX_LISTS;
			priv->rxBuffer = (u8 *) ( priv->txList + TLAN_NUM_TX_LISTS );
			priv->txBuffer = priv->rxBuffer + ( TLAN_NUM_RX_LISTS * TLAN_MAX_FRAME_SIZE );

			err = 0;
			for ( i = 0;  i < 6 ; i++ )
				err |= TLan_EeReadByte( dev->base_addr, (u8) 0x83 + i, (u8 *) &dev->dev_addr[i] );
			if ( err )
				printk( "TLAN:  %s: Error reading MAC Address from eeprom: %d\n", dev->name, err );
			dev->addr_len = 6;

			dev->open = &TLan_Open;
			dev->hard_start_xmit = &TLan_StartTx;
			dev->stop = &TLan_Close;
			dev->get_stats = &TLan_GetStats;
			dev->set_multicast_list = &TLan_SetMulticastList;

			return 0;

		} /* TLan_Init */




	/*************************************************************************
	 *	TLan_Open
	 *
	 *	Returns:	0 on success, error code otherwise.
	 *	Parms:		dev		Structure of device to be opened.
	 *
	 *	This routine puts the driver and TLAN adapter in a state where it is
	 *	ready to send and receive packets.  It allocates the IRQ, resets and
	 *	brings the adapter out of reset, and allows interrupts.  It also
	 *	delays the startup for autonegotiation or sends a Rx GO command to
	 *	the adapter, as appropriate.
	 *
	 ************************************************************************/

		int TLan_Open( struct device *dev )
		{
			int				err;
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;

			err = request_irq( dev->irq, TLan_HandleInterrupt, SA_SHIRQ, TLanSignature, dev );
			if ( err ) {
				printk( "TLAN:  %s: IRQ %d already in use.\n", dev->name, dev->irq );
				return -EAGAIN;
			}

			MOD_INC_USE_COUNT;

			dev->tbusy = 0;
			dev->interrupt = 0;
			dev->start = 1;

			/* NOTE: It might not be necessary to read the stats before a
					 reset if you don't care what the values are.
			*/
			TLan_ResetLists( dev );
			TLan_ReadAndClearStats( dev, TLAN_IGNORE );
			TLan_Reset( dev );
			TLan_SetMac( dev, 0, dev->dev_addr );
			outb( ( TLAN_HC_INT_ON >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 );
			if ( debug >= 1 )
				outb( ( TLAN_HC_REQ_INT >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 );

			init_timer( &priv->timer );
			priv->timer.data = (unsigned long) dev;
			priv->timer.function = &TLan_Timer;
			if ( priv->phyFlags & TLAN_PHY_AUTONEG ) {
				priv->timer.expires = jiffies + TLAN_TIMER_LINK_DELAY;
				priv->timerSetAt = jiffies;
				priv->timerType = TLAN_TIMER_LINK;
				add_timer( &priv->timer );
			} else {
				TLAN_DBG( 1, "TLAN:  RX GO\n" );
				outl( virt_to_bus( priv->rxList ), dev->base_addr + TLAN_CH_PARM );
				outl( TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD );
			}

			TLAN_DBG( 1, "TLAN:  Device %s opened.\n", dev->name );

			return 0;

		} /* TLan_Open */




	/*************************************************************************
	 *	TLan_StartTx
	 *  
	 *  Returns:	0 on success, non-zero on failure.
	 *	Parms:		skb		A pointer to the sk_buff containing the frame to
	 *						be sent.
	 *				dev		The device to send the data on.
	 *
	 *	This function adds a frame to the Tx list to be sent ASAP.  First it
	 *	verifies that the adapter is ready and there is room in the queue.
	 *	Then it sets up the next available list, copies the frame to the
	 *	corresponding buffer.  If the adapter Tx channel is idle, it gives
	 *	adapter a Tx Go command on the list, otherwise it sets the forward
	 *	address of the previous list to point to this one.  Then it frees
	 *	the sk_buff.
	 *
	 ************************************************************************/

		int TLan_StartTx( struct sk_buff *skb, struct device *dev )
		{
			TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv;
			TLanList		*tail_list;
			u8				*tail_buffer;
			int				pad;

			// printk( "Entering StartTx\n" );
			if ( ! priv->phyOnline ) {
				dev_kfree_skb( skb, FREE_WRITE );
				return 0;
			}

			tail_list = priv->txList + priv->txTail;
			if ( tail_list->cStat != TLAN_CSTAT_UNUSED ) {
				// printk( "TLAN:  %s TX is busy, Head=%d Tail=%d\n", dev->name, priv->txHead, priv->txTail );
				dev->tbusy = 1;
				// printk( "TLAN:   Tx is busy.\n");
				priv->txBusyCount++;
				return 1;
			}
			tail_list->forward = 0;
			tail_buffer = priv->txBuffer + ( priv->txTail * TLAN_MAX_FRAME_SIZE );
			memcpy( tail_buffer, skb->data, skb->len );
			pad = TLAN_MIN_FRAME_SIZE - skb->len;
			if ( pad > 0 ) {
				tail_list->frameSize = (u16) skb->len + pad;
				tail_list->buffer[0].count = (u32) skb->len;
				tail_list->buffer[1].count = TLAN_LAST_BUFFER | (u32) pad;
				tail_list->buffer[1].address = virt_to_bus( TLanPadBuffer );
			} else {
				tail_list->frameSize = (u16) skb->len;
				tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) skb->len;
				tail_list->buffer[1].count = 0;
				tail_list->buffer[1].address = 0;
			}
			// are we transferring?
			cli();
			tail_list->cStat = TLAN_CSTAT_READY;
			if ( ! priv->txInProgress ) {
				priv->txInProgress = 1;
				outw( 0x4, dev->base_addr + TLAN_HOST_INT );
				// printk("TLAN: Sending GO for 0%d\n", priv->txTail );
				outl( virt_to_bus( tail_list ), dev->base_addr + TLAN_CH_PARM );
				outl( TLAN_HC_GO | TLAN_HC_ACK, dev->base_addr + TLAN_HOST_CMD );
			} else {
				// printk("TLAN: Adding 0%d\n", priv->txTail );
				// Assign previous list to point to this one.  If previous has
				// already been read, the EOC check in the TX EOF interrupt handler
				// will start another transfer.
				if ( priv->txTail == 0 )
					( priv->txList + ( TLAN_NUM_TX_LISTS - 1 ) )->forward = virt_to_bus( tail_list );
				else
					( priv->txList + ( priv->txTail - 1 ) )->forward = virt_to_bus( tail_list );
			}
			sti();
			priv->txTail++;
			if ( priv->txTail >= TLAN_NUM_TX_LISTS )
				priv->txTail = 0;

			dev_kfree_skb( skb, FREE_WRITE );
				
			dev->trans_start = jiffies;
			// printk( "Leaving StartTx\n" );
			return 0;

		} /* TLan_StartTx */




	/*************************************************************************
	 *	TLan_HandleInterrupt
	 *  
	 *  Returns:	Nothing
	 *	Parms:		irq		The line on which the interrupt occurred.
	 *				dev_id	A pointer to the device assigned to this irq line.
	 *				regs	???
	 *
	 *	This function handles an interrupt generated by its assigned TLAN
	 *	adapter.  The function deactivates interrupts on its adapter, records
	 *	the type of interrupt, executes the appropriate subhandler, and
	 *	acknowdges the interrupt to the adapter (thus re-enabling adapter
	 *	interrupts.
	 *
	 ************************************************************************/

		void TLan_HandleInterrupt(int irq, void *dev_id, struct pt_regs *regs)
		{
			u32				ack;
			struct device	*dev;
			u32				host_cmd;
			u16				host_int;
			int				type;

			dev = (struct device *) dev_id;

			if ( dev->interrupt )
				TLAN_DBG( 1, "TLAN:   Re-entering interrupt handler for %s: %d.\n" , dev->name, dev->interrupt );
			dev->interrupt++;

			cli();

			host_int = inw( dev->base_addr + TLAN_HOST_INT );
			outw( host_int, dev->base_addr + TLAN_HOST_INT ); // Deactivate Ints

			type = ( host_int & TLAN_HI_IT_MASK ) >> 2;

			ack = TLanIntVector[type]( dev, host_int );

			sti();

			if ( ack ) {
				host_cmd = TLAN_HC_ACK | ack | ( type << 18 );
				outl( host_cmd, dev->base_addr + TLAN_HOST_CMD );
			}

			dev->interrupt--;

		} /* TLan_HandleInterrupts */




	/*************************************************************************
	 *	TLan_Close
	 *  
	 *  Returns:	An error code.
	 *	Parms:		dev		The device structure of the device to close.
	 *
	 *	This function shuts down the adapter.  It records any stats, puts
	 *  the adapter into reset state, deactivates its time as needed, and
	 *	frees the irq it is using.
	 *
	 ************************************************************************/

		int TLan_Close(struct device *dev)
		{
			TLanPrivateInfo *priv = (TLanPrivateInfo *) dev->priv;

			dev->start = 0;
			dev->tbusy = 1;

			TLan_ReadAndClearStats( dev, TLAN_RECORD );
			outl( TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD );
			if ( priv->timerSetAt != 0 )
				del_timer( &priv->timer );
			free_irq( dev->irq, dev );
			TLAN_DBG( 1, "TLAN:   Device %s closed.\n", dev->name );

			MOD_DEC_USE_COUNT;

			return 0;

		} /* TLan_Close */




	/*************************************************************************
	 *	TLan_GetStats
	 *  
	 *  Returns:	A pointer to the device's statistics structure.
	 *	Parms:		dev		The device structure to return the stats for.
	 *
	 *	This function updates the devices statistics by reading the TLAN
	 *	chip's onboard registers.  Then it returns the address of the
	 *	statistics structure.
	 *
	 ************************************************************************/

		struct enet_statistics *TLan_GetStats( struct device *dev )
		{
			TLanPrivateInfo	*priv = (TLanPrivateInfo *) dev->priv;
			int i;

			/* Should only read stats if open ? */
			TLan_ReadAndClearStats( dev, TLAN_RECORD );
			printk( "TLAN:  %s Rx EOC Count: %d\n", dev->name, priv->rxEocCount );
			printk( "TLAN:  %s Tx Busy Count: %d\n", dev->name, priv->txBusyCount );
			// printk( "TLAN:   Got stats for %s.\n", dev->name );
			TLan_PrintDio( dev->base_addr );
			TLan_PhyPrint( dev );
			for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ )
				TLan_PrintList( priv->rxList + i, "RX", i );
			for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ )
				TLan_PrintList( priv->txList + i, "TX", i );
			
			return ( &( (TLanPrivateInfo *) dev->priv )->stats );

		} /* TLan_GetStats */




	/*************************************************************************
	 *	TLan_SetMulticastList
	 *  
	 *  Returns:	Nothing
	 *	Parms:		dev		The device structure to set the multicast list for.
	 *
	 *	This function sets the TLAN adaptor to various receive modes.  If the
	 *	IFF_PROMISC flag is set, promiscuous mode is acitviated.  Otherwise,
	 *	promiscuous mode is turned off.  If the IFF_ALLMULTI flag is set, then
	 *	the hash table is set to receive all group addresses.  Otherwise, the
	 *	first three multicast addresses are stored in AREG_1-3, and the rest
	 *  are selected via the hash table, as necessary.
	 *
	 ************************************************************************/

		void TLan_SetMulticastList( struct device *dev )
		{	
			struct dev_mc_list	*dmi = dev->mc_list;
			u32					hash1 = 0;
			u32					hash2 = 0;
			int					i;
			u32					offset;
			u8					tmp;

			if ( dev->flags & IFF_PROMISC ) {
				tmp = TLan_DioRead8( dev->base_addr, TLAN_NET_CMD );
				TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF );
			} else {
				tmp = TLan_DioRead8( dev->base_addr, TLAN_NET_CMD );
				TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF );
				if ( dev->flags & IFF_ALLMULTI ) {
					for ( i = 0; i < 3; i++ ) 
						TLan_SetMac( dev, i + 1, NULL );
					TLan_DioWrite32( dev->base_addr, TLAN_HASH_1, 0xFFFFFFFF );
					TLan_DioWrite32( dev->base_addr, TLAN_HASH_2, 0xFFFFFFFF );
				} else {
					for ( i = 0; i < dev->mc_count; i++ ) {
						if ( i < 3 ) {
							TLan_SetMac( dev, i + 1, (char *) &dmi->dmi_addr );
						} else {
							offset = TLan_HashFunc( (u8 *) &dmi->dmi_addr );
							if ( offset < 32 ) 
								hash1 |= ( 1 << offset );
							else
								hash2 |= ( 1 << ( offset - 32 ) );
						}
						dmi = dmi->next;
					}
					for ( ; i < 3; i++ ) 
						TLan_SetMac( dev, i + 1, NULL );
					TLan_DioWrite32( dev->base_addr, TLAN_HASH_1, hash1 );
					TLan_DioWrite32( dev->base_addr, TLAN_HASH_2, hash2 );
				}
			}

		} /* TLan_SetRxMode */
