net: ns9750: drop !NET_MULTI driver

Only one board uses this driver (ns9750dev), but the board doesn't seem
to have an entry to actually build it in the Makefile/boards.cfg, so just
delete net support from its board config.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

2 files changed, 0 insertions, 790 deletions

diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index d075ba522b..0706738d53 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -61,7 +61,6 @@ COBJS-$(CONFIG_DRIVER_AX88796L) += ax88796.o ne2000_base.o
 COBJS-$(CONFIG_DRIVER_NETARMETH) += netarm_eth.o
 COBJS-$(CONFIG_NETCONSOLE) += netconsole.o
 COBJS-$(CONFIG_NS8382X) += ns8382x.o
-COBJS-$(CONFIG_DRIVER_NS9750_ETHERNET) += ns9750_eth.o
 COBJS-$(CONFIG_PCNET) += pcnet.o
 COBJS-$(CONFIG_PLB2800_ETHER) += plb2800_eth.o
 COBJS-$(CONFIG_DRIVER_RTL8019) += rtl8019.o
diff --git a/drivers/net/ns9750_eth.c b/drivers/net/ns9750_eth.c
deleted file mode 100644
index 9899563c47..0000000000
--- a/drivers/net/ns9750_eth.c
+++ /dev/null
@@ -1,789 +0,0 @@
-/***********************************************************************
- *
- * Copyright (C) 2004 by FS Forth-Systeme GmbH.
- * All rights reserved.
- *
- * $Id: ns9750_eth.c,v 1.2 2004/02/24 14:09:39 mpietrek Exp $
- * @Author: Markus Pietrek
- * @Descr: Ethernet driver for the NS9750. Uses DMA Engine with polling
- *	   interrupt status. But interrupts are not enabled.
- *	   Only one tx buffer descriptor and the RXA buffer descriptor are used
- *	   Currently no transmit lockup handling is included. eth_send has a 5s
- *	   timeout for sending frames. No retransmits are performed when an
- *	   error occurs.
- * @References: [1] NS9750 Hardware Reference, December 2003
- *		[2] Intel LXT971 Datasheet #249414 Rev. 02
- *		[3] NS7520 Linux Ethernet Driver
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- *
- ***********************************************************************/
-
-#include <common.h>
-#include <net.h>		/* NetSendPacket */
-
-#include "ns9750_eth.h"		/* for Ethernet and PHY */
-
-/* some definition to make transition to linux easier */
-
-#define NS9750_DRIVER_NAME	"eth"
-#define KERN_WARNING		"Warning:"
-#define KERN_ERR		"Error:"
-#define KERN_INFO		"Info:"
-
-#if 0
-# define DEBUG
-#endif
-
-#ifdef	DEBUG
-# define printk			printf
-
-# define DEBUG_INIT		0x0001
-# define DEBUG_MINOR		0x0002
-# define DEBUG_RX		0x0004
-# define DEBUG_TX		0x0008
-# define DEBUG_INT		0x0010
-# define DEBUG_POLL		0x0020
-# define DEBUG_LINK		0x0040
-# define DEBUG_MII		0x0100
-# define DEBUG_MII_LOW		0x0200
-# define DEBUG_MEM		0x0400
-# define DEBUG_ERROR		0x4000
-# define DEBUG_ERROR_CRIT	0x8000
-
-static int nDebugLvl = DEBUG_ERROR_CRIT;
-
-# define DEBUG_ARGS0( FLG, a0 ) if( ( nDebugLvl & (FLG) ) == (FLG) ) \
-		printf("%s: " a0, __FUNCTION__, 0, 0, 0, 0, 0, 0 )
-# define DEBUG_ARGS1( FLG, a0, a1 ) if( ( nDebugLvl & (FLG) ) == (FLG)) \
-		printf("%s: " a0, __FUNCTION__, (int)(a1), 0, 0, 0, 0, 0 )
-# define DEBUG_ARGS2( FLG, a0, a1, a2 ) if( (nDebugLvl & (FLG)) ==(FLG))\
-		printf("%s: " a0, __FUNCTION__, (int)(a1), (int)(a2), 0, 0,0,0 )
-# define DEBUG_ARGS3( FLG, a0, a1, a2, a3 ) if((nDebugLvl &(FLG))==(FLG))\
-		printf("%s: "a0,__FUNCTION__,(int)(a1),(int)(a2),(int)(a3),0,0,0)
-# define DEBUG_FN( FLG ) if( (nDebugLvl & (FLG)) == (FLG) ) \
-		printf("\r%s:line %d\n", (int)__FUNCTION__, __LINE__, 0,0,0,0);
-# define ASSERT( expr, func ) if( !( expr ) ) { \
-		printf( "Assertion failed! %s:line %d %s\n", \
-		(int)__FUNCTION__,__LINE__,(int)(#expr),0,0,0); \
-		func }
-#else /* DEBUG */
-# define printk(...)
-# define DEBUG_ARGS0( FLG, a0 )
-# define DEBUG_ARGS1( FLG, a0, a1 )
-# define DEBUG_ARGS2( FLG, a0, a1, a2 )
-# define DEBUG_ARGS3( FLG, a0, a1, a2, a3 )
-# define DEBUG_FN( n )
-# define ASSERT(expr, func)
-#endif /* DEBUG */
-
-#define NS9750_MII_NEG_DELAY		(5*CONFIG_SYS_HZ) /* in s */
-#define TX_TIMEOUT			(5*CONFIG_SYS_HZ) /* in s */
-
-/* @TODO move it to eeprom.h */
-#define FS_EEPROM_AUTONEG_MASK		0x7
-#define FS_EEPROM_AUTONEG_SPEED_MASK	0x1
-#define FS_EEPROM_AUTONEG_SPEED_10	0x0
-#define FS_EEPROM_AUTONEG_SPEED_100	0x1
-#define FS_EEPROM_AUTONEG_DUPLEX_MASK	0x2
-#define FS_EEPROM_AUTONEG_DUPLEX_HALF	0x0
-#define FS_EEPROM_AUTONEG_DUPLEX_FULL	0x2
-#define FS_EEPROM_AUTONEG_ENABLE_MASK	0x4
-#define FS_EEPROM_AUTONEG_DISABLE	0x0
-#define FS_EEPROM_AUTONEG_ENABLE	0x4
-
-/* buffer descriptors taken from [1] p.306 */
-typedef struct
-{
-	unsigned int* punSrc;
-	unsigned int unLen;	/* 11 bits */
-	unsigned int* punDest;	/* unused */
-	union {
-		unsigned int unReg;
-		struct {
-			unsigned uStatus : 16;
-			unsigned uRes : 12;
-			unsigned uFull : 1;
-			unsigned uEnable : 1;
-			unsigned uInt : 1;
-			unsigned uWrap : 1;
-		} bits;
-	} s;
-} rx_buffer_desc_t;
-
-typedef struct
-{
-	unsigned int* punSrc;
-	unsigned int unLen;	/* 10 bits */
-	unsigned int* punDest;	/* unused */
-	union {
-		unsigned int unReg; /* only 32bit accesses may done to NS9750
-				     * eth engine */
-		struct {
-			unsigned uStatus : 16;
-			unsigned uRes : 12;
-			unsigned uFull : 1;
-			unsigned uLast : 1;
-			unsigned uInt : 1;
-			unsigned uWrap : 1;
-		} bits;
-	} s;
-} tx_buffer_desc_t;
-
-static int ns9750_eth_reset( void );
-
-static void ns9750_link_force( void );
-static void ns9750_link_auto_negotiate( void );
-static void ns9750_link_update_egcr( void );
-static void ns9750_link_print_changed( void );
-
-/* the PHY stuff */
-
-static char ns9750_mii_identify_phy( void );
-static unsigned short ns9750_mii_read( unsigned short uiRegister );
-static void ns9750_mii_write( unsigned short uiRegister, unsigned short uiData );
-static unsigned int ns9750_mii_get_clock_divisor( unsigned int unMaxMDIOClk );
-static unsigned int ns9750_mii_poll_busy( void );
-
-static unsigned int nPhyMaxMdioClock = PHY_MDIO_MAX_CLK;
-static unsigned char ucLinkMode =      FS_EEPROM_AUTONEG_ENABLE;
-static unsigned int uiLastLinkStatus;
-static PhyType phyDetected = PHY_NONE;
-
-/* we use only one tx buffer descriptor */
-static tx_buffer_desc_t* pTxBufferDesc =
-	(tx_buffer_desc_t*) get_eth_reg_addr( NS9750_ETH_TXBD );
-
-/* we use only one rx buffer descriptor of the 4 */
-static rx_buffer_desc_t aRxBufferDesc[ 4 ];
-
-/***********************************************************************
- * @Function: eth_init
- * @Return: -1 on failure otherwise 0
- * @Descr: Initializes the ethernet engine and uses either FS Forth's default
- *	   MAC addr or the one in environment
- ***********************************************************************/
-
-int eth_init (bd_t * pbis)
-{
-	/* This default MAC Addr is reserved by FS Forth-Systeme for the case of
-	   EEPROM failures */
-	unsigned char aucMACAddr[6] = { 0x00, 0x04, 0xf3, 0x00, 0x06, 0x35 };
-	char *pcTmp = getenv ("ethaddr");
-	char *pcEnd;
-	int i;
-
-	DEBUG_FN (DEBUG_INIT);
-
-	/* no need to check for hardware */
-
-	if (!ns9750_eth_reset ())
-		return -1;
-
-	if (pcTmp != NULL)
-		for (i = 0; i < 6; i++) {
-			aucMACAddr[i] =
-				pcTmp ? simple_strtoul (pcTmp, &pcEnd,
-							16) : 0;
-			pcTmp = (*pcTmp) ? pcEnd + 1 : pcEnd;
-		}
-
-	/* configure ethernet address */
-
-	*get_eth_reg_addr (NS9750_ETH_SA1) =
-		aucMACAddr[5] << 8 | aucMACAddr[4];
-	*get_eth_reg_addr (NS9750_ETH_SA2) =
-		aucMACAddr[3] << 8 | aucMACAddr[2];
-	*get_eth_reg_addr (NS9750_ETH_SA3) =
-		aucMACAddr[1] << 8 | aucMACAddr[0];
-
-	/* enable hardware */
-
-	*get_eth_reg_addr (NS9750_ETH_MAC1) = NS9750_ETH_MAC1_RXEN;
-
-	/* the linux kernel may give packets < 60 bytes, for example arp */
-	*get_eth_reg_addr (NS9750_ETH_MAC2) = NS9750_ETH_MAC2_CRCEN |
-		NS9750_ETH_MAC2_PADEN | NS9750_ETH_MAC2_HUGE;
-
-	/* enable receive and transmit FIFO, use 10/100 Mbps MII */
-	*get_eth_reg_addr (NS9750_ETH_EGCR1) =
-		NS9750_ETH_EGCR1_ETXWM |
-		NS9750_ETH_EGCR1_ERX |
-		NS9750_ETH_EGCR1_ERXDMA |
-		NS9750_ETH_EGCR1_ETX |
-		NS9750_ETH_EGCR1_ETXDMA | NS9750_ETH_EGCR1_ITXA;
-
-	/* prepare DMA descriptors */
-	for (i = 0; i < 4; i++) {
-		aRxBufferDesc[i].punSrc = 0;
-		aRxBufferDesc[i].unLen = 0;
-		aRxBufferDesc[i].s.bits.uWrap = 1;
-		aRxBufferDesc[i].s.bits.uInt = 1;
-		aRxBufferDesc[i].s.bits.uEnable = 0;
-		aRxBufferDesc[i].s.bits.uFull = 0;
-	}
-
-	/* NetRxPackets[ 0 ] is initialized before eth_init is called and never
-	   changes. NetRxPackets is 32bit aligned */
-	aRxBufferDesc[0].punSrc = (unsigned int *) NetRxPackets[0];
-	aRxBufferDesc[0].s.bits.uEnable = 1;
-	aRxBufferDesc[0].unLen = 1522;	/* as stated in [1] p.307 */
-
-	*get_eth_reg_addr (NS9750_ETH_RXAPTR) =
-		(unsigned int) &aRxBufferDesc[0];
-
-	/* [1] Tab. 221 states less than 5us */
-	*get_eth_reg_addr (NS9750_ETH_EGCR1) |= NS9750_ETH_EGCR1_ERXINIT;
-	while (!
-	       (*get_eth_reg_addr (NS9750_ETH_EGSR) & NS9750_ETH_EGSR_RXINIT))
-		/* wait for finish */
-		udelay (1);
-
-	/* @TODO do we need to clear RXINIT? */
-	*get_eth_reg_addr (NS9750_ETH_EGCR1) &= ~NS9750_ETH_EGCR1_ERXINIT;
-
-	*get_eth_reg_addr (NS9750_ETH_RXFREE) = 0x1;
-
-	return 0;
-}
-
-/***********************************************************************
- * @Function: eth_send
- * @Return: -1 on timeout otherwise 1
- * @Descr: sends one frame by DMA
- ***********************************************************************/
-
-int eth_send (volatile void *pPacket, int nLen)
-{
-	ulong ulTimeout;
-
-	DEBUG_FN (DEBUG_TX);
-
-	/* clear old status values */
-	*get_eth_reg_addr (NS9750_ETH_EINTR) &=
-		*get_eth_reg_addr (NS9750_ETH_EINTR) & NS9750_ETH_EINTR_TX_MA;
-
-	/* prepare Tx Descriptors */
-
-	pTxBufferDesc->punSrc = (unsigned int *) pPacket;	/* pPacket is 32bit
-								 * aligned */
-	pTxBufferDesc->unLen = nLen;
-	/* only 32bit accesses allowed. wrap, full, interrupt and enabled to 1 */
-	pTxBufferDesc->s.unReg = 0xf0000000;
-	/* pTxBufferDesc is the first possible buffer descriptor */
-	*get_eth_reg_addr (NS9750_ETH_TXPTR) = 0x0;
-
-	/* enable processor for next frame */
-
-	*get_eth_reg_addr (NS9750_ETH_EGCR2) &= ~NS9750_ETH_EGCR2_TCLER;
-	*get_eth_reg_addr (NS9750_ETH_EGCR2) |= NS9750_ETH_EGCR2_TCLER;
-
-	ulTimeout = get_timer (0);
-
-	DEBUG_ARGS0 (DEBUG_TX | DEBUG_MINOR,
-		     "Waiting for transmission to finish\n");
-	while (!
-	       (*get_eth_reg_addr (NS9750_ETH_EINTR) &
-		(NS9750_ETH_EINTR_TXDONE | NS9750_ETH_EINTR_TXERR))) {
-		/* do nothing, wait for completion */
-		if (get_timer (0) - ulTimeout > TX_TIMEOUT) {
-			DEBUG_ARGS0 (DEBUG_TX, "Transmit Timed out\n");
-			return -1;
-		}
-	}
-	DEBUG_ARGS0 (DEBUG_TX | DEBUG_MINOR, "transmitted...\n");
-
-	return 0;
-}
-
-/***********************************************************************
- * @Function: eth_rx
- * @Return: size of last frame in bytes or 0 if no frame available
- * @Descr: gives one frame to U-Boot which has been copied by DMA engine already
- *	   to NetRxPackets[ 0 ].
- ***********************************************************************/
-
-int eth_rx (void)
-{
-	int nLen = 0;
-	unsigned int unStatus;
-
-	unStatus =
-		*get_eth_reg_addr (NS9750_ETH_EINTR) & NS9750_ETH_EINTR_RX_MA;
-
-	if (!unStatus)
-		/* no packet available, return immediately */
-		return 0;
-
-	DEBUG_FN (DEBUG_RX);
-
-	/* unLen always < max(nLen) and discard checksum */
-	nLen = (int) aRxBufferDesc[0].unLen - 4;
-
-	/* acknowledge status register */
-	*get_eth_reg_addr (NS9750_ETH_EINTR) = unStatus;
-
-	aRxBufferDesc[0].unLen = 1522;
-	aRxBufferDesc[0].s.bits.uFull = 0;
-
-	/* Buffer A descriptor available again */
-	*get_eth_reg_addr (NS9750_ETH_RXFREE) |= 0x1;
-
-	/* NetReceive may call eth_send. Due to a possible bug of the NS9750 we
-	 * have to acknowledge the received frame before sending a new one */
-	if (unStatus & NS9750_ETH_EINTR_RXDONEA)
-		NetReceive (NetRxPackets[0], nLen);
-
-	return nLen;
-}
-
-/***********************************************************************
- * @Function: eth_halt
- * @Return: n/a
- * @Descr: stops the ethernet engine
- ***********************************************************************/
-
-void eth_halt (void)
-{
-	DEBUG_FN (DEBUG_INIT);
-
-	*get_eth_reg_addr (NS9750_ETH_MAC1) &= ~NS9750_ETH_MAC1_RXEN;
-	*get_eth_reg_addr (NS9750_ETH_EGCR1) &= ~(NS9750_ETH_EGCR1_ERX |
-						  NS9750_ETH_EGCR1_ERXDMA |
-						  NS9750_ETH_EGCR1_ETX |
-						  NS9750_ETH_EGCR1_ETXDMA);
-}
-
-/***********************************************************************
- * @Function: ns9750_eth_reset
- * @Return: 0 on failure otherwise 1
- * @Descr: resets the ethernet interface and the PHY,
- *	   performs auto negotiation or fixed modes
- ***********************************************************************/
-
-static int ns9750_eth_reset (void)
-{
-	DEBUG_FN (DEBUG_MINOR);
-
-	/* Reset MAC */
-	*get_eth_reg_addr (NS9750_ETH_EGCR1) |= NS9750_ETH_EGCR1_MAC_HRST;
-	udelay (5);		/* according to [1], p.322 */
-	*get_eth_reg_addr (NS9750_ETH_EGCR1) &= ~NS9750_ETH_EGCR1_MAC_HRST;
-
-	/* reset and initialize PHY */
-
-	*get_eth_reg_addr (NS9750_ETH_MAC1) &= ~NS9750_ETH_MAC1_SRST;
-
-	/* we don't support hot plugging of PHY, therefore we don't reset
-	   phyDetected and nPhyMaxMdioClock here. The risk is if the setting is
-	   incorrect the first open
-	   may detect the PHY correctly but succeding will fail
-	   For reseting the PHY and identifying we have to use the standard
-	   MDIO CLOCK value 2.5 MHz only after hardware reset
-	   After having identified the PHY we will do faster */
-
-	*get_eth_reg_addr (NS9750_ETH_MCFG) =
-		ns9750_mii_get_clock_divisor (nPhyMaxMdioClock);
-
-	/* reset PHY */
-	ns9750_mii_write(MII_BMCR, BMCR_RESET);
-	ns9750_mii_write(MII_BMCR, 0);
-
-	/* @TODO check time */
-	udelay (3000);		/* [2] p.70 says at least 300us reset recovery time. But
-				   go sure, it didn't worked stable at higher timer
-				   frequencies under LxNETES-2.x */
-
-	/* MII clock has been setup to default, ns9750_mii_identify_phy should
-	   work for all */
-
-	if (!ns9750_mii_identify_phy ()) {
-		printk (KERN_ERR NS9750_DRIVER_NAME
-			": Unsupported PHY, aborting\n");
-		return 0;
-	}
-
-	/* now take the highest MDIO clock possible after detection */
-	*get_eth_reg_addr (NS9750_ETH_MCFG) =
-		ns9750_mii_get_clock_divisor (nPhyMaxMdioClock);
-
-
-	/* PHY has been detected, so there can be no abort reason and we can
-	   finish initializing ethernet */
-
-	uiLastLinkStatus = 0xff;	/* undefined */
-
-	if ((ucLinkMode & FS_EEPROM_AUTONEG_ENABLE_MASK) ==
-	    FS_EEPROM_AUTONEG_DISABLE)
-		/* use parameters defined */
-		ns9750_link_force ();
-	else
-		ns9750_link_auto_negotiate ();
-
-	if (phyDetected == PHY_LXT971A)
-		/* set LED2 to link mode */
-		ns9750_mii_write (PHY_LXT971_LED_CFG,
-				  PHY_LXT971_LED_CFG_LINK_ACT <<
-				  PHY_LXT971_LED_CFG_SHIFT_LED2);
-
-	return 1;
-}
-
-/***********************************************************************
- * @Function: ns9750_link_force
- * @Return: void
- * @Descr: configures eth and MII to use the link mode defined in
- *	   ucLinkMode
- ***********************************************************************/
-
-static void ns9750_link_force (void)
-{
-	unsigned short uiControl;
-
-	DEBUG_FN (DEBUG_LINK);
-
-	uiControl = ns9750_mii_read(MII_BMCR);
-	uiControl &= ~(BMCR_SPEED1000 | BMCR_SPEED100 |
-		       BMCR_ANENABLE | BMCR_FULLDPLX);
-
-	uiLastLinkStatus = 0;
-
-	if ((ucLinkMode & FS_EEPROM_AUTONEG_SPEED_MASK) ==
-	    FS_EEPROM_AUTONEG_SPEED_100) {
-		uiControl |= BMCR_SPEED100;
-		uiLastLinkStatus |= PHY_LXT971_STAT2_100BTX;
-	}
-
-	if ((ucLinkMode & FS_EEPROM_AUTONEG_DUPLEX_MASK) ==
-	    FS_EEPROM_AUTONEG_DUPLEX_FULL) {
-		uiControl |= BMCR_FULLDPLX;
-		uiLastLinkStatus |= PHY_LXT971_STAT2_DUPLEX_MODE;
-	}
-
-	ns9750_mii_write(MII_BMCR, uiControl);
-
-	ns9750_link_print_changed ();
-	ns9750_link_update_egcr ();
-}
-
-/***********************************************************************
- * @Function: ns9750_link_auto_negotiate
- * @Return: void
- * @Descr: performs auto-negotation of link.
- ***********************************************************************/
-
-static void ns9750_link_auto_negotiate (void)
-{
-	unsigned long ulStartJiffies;
-	unsigned short uiStatus;
-
-	DEBUG_FN (DEBUG_LINK);
-
-	/* run auto-negotation */
-	/* define what we are capable of */
-	ns9750_mii_write(MII_ADVERTISE,
-			 LPA_100FULL |
-			 LPA_100HALF |
-			 LPA_10FULL |
-			 LPA_10HALF |
-			 PHY_ANLPAR_PSB_802_3);
-	/* start auto-negotiation */
-	ns9750_mii_write(MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
-
-	/* wait for completion */
-
-	ulStartJiffies = get_ticks ();
-	while (get_ticks () < ulStartJiffies + NS9750_MII_NEG_DELAY) {
-		uiStatus = ns9750_mii_read(MII_BMSR);
-		if ((uiStatus &
-		     (BMSR_ANEGCOMPLETE | BMSR_LSTATUS)) ==
-		    (BMSR_ANEGCOMPLETE | BMSR_LSTATUS)) {
-			/* lucky we are, auto-negotiation succeeded */
-			ns9750_link_print_changed ();
-			ns9750_link_update_egcr ();
-			return;
-		}
-	}
-
-	DEBUG_ARGS0 (DEBUG_LINK, "auto-negotiation timed out\n");
-	/* ignore invalid link settings */
-}
-
-/***********************************************************************
- * @Function: ns9750_link_update_egcr
- * @Return: void
- * @Descr: updates the EGCR and MAC2 link status after mode change or
- *	   auto-negotation
- ***********************************************************************/
-
-static void ns9750_link_update_egcr (void)
-{
-	unsigned int unEGCR;
-	unsigned int unMAC2;
-	unsigned int unIPGT;
-
-	DEBUG_FN (DEBUG_LINK);
-
-	unEGCR = *get_eth_reg_addr (NS9750_ETH_EGCR1);
-	unMAC2 = *get_eth_reg_addr (NS9750_ETH_MAC2);
-	unIPGT = *get_eth_reg_addr (NS9750_ETH_IPGT) & ~NS9750_ETH_IPGT_MA;
-
-	unMAC2 &= ~NS9750_ETH_MAC2_FULLD;
-	if ((uiLastLinkStatus & PHY_LXT971_STAT2_DUPLEX_MODE)
-	    == PHY_LXT971_STAT2_DUPLEX_MODE) {
-		unMAC2 |= NS9750_ETH_MAC2_FULLD;
-		unIPGT |= 0x15; /* see [1] p. 339 */
-	} else
-		unIPGT |= 0x12; /* see [1] p. 339 */
-
-	*get_eth_reg_addr (NS9750_ETH_MAC2) = unMAC2;
-	*get_eth_reg_addr (NS9750_ETH_EGCR1) = unEGCR;
-	*get_eth_reg_addr (NS9750_ETH_IPGT) = unIPGT;
-}
-
-/***********************************************************************
- * @Function: ns9750_link_print_changed
- * @Return: void
- * @Descr: checks whether the link status has changed and if so prints
- *	   the new mode
- ***********************************************************************/
-
-static void ns9750_link_print_changed (void)
-{
-	unsigned short uiStatus;
-	unsigned short uiControl;
-
-	DEBUG_FN (DEBUG_LINK);
-
-	uiControl = ns9750_mii_read(MII_BMCR);
-
-	if ((uiControl & BMCR_ANENABLE) == BMCR_ANENABLE) {
-		/* BMSR_LSTATUS is only set on autonegotiation */
-		uiStatus = ns9750_mii_read(MII_BMSR);
-
-		if (!(uiStatus & BMSR_LSTATUS)) {
-			printk (KERN_WARNING NS9750_DRIVER_NAME
-				": link down\n");
-			/* @TODO Linux: carrier_off */
-		} else {
-			/* @TODO Linux: carrier_on */
-			if (phyDetected == PHY_LXT971A) {
-				uiStatus = ns9750_mii_read (PHY_LXT971_STAT2);
-				uiStatus &= (PHY_LXT971_STAT2_100BTX |
-					     PHY_LXT971_STAT2_DUPLEX_MODE |
-					     PHY_LXT971_STAT2_AUTO_NEG);
-
-				/* mask out all uninteresting parts */
-			}
-			/* other PHYs must store their link information in
-			   uiStatus as PHY_LXT971 */
-		}
-	} else {
-		/* mode has been forced, so uiStatus should be the same as the
-		   last link status, enforce printing */
-		uiStatus = uiLastLinkStatus;
-		uiLastLinkStatus = 0xff;
-	}
-
-	if (uiStatus != uiLastLinkStatus) {
-		/* save current link status */
-		uiLastLinkStatus = uiStatus;
-
-		/* print new link status */
-
-		printk (KERN_INFO NS9750_DRIVER_NAME
-			": link mode %i Mbps %s duplex %s\n",
-			(uiStatus & PHY_LXT971_STAT2_100BTX) ? 100 : 10,
-			(uiStatus & PHY_LXT971_STAT2_DUPLEX_MODE) ? "full" :
-			"half",
-			(uiStatus & PHY_LXT971_STAT2_AUTO_NEG) ? "(auto)" :
-			"");
-	}
-}
-
-/***********************************************************************
- * the MII low level stuff
- ***********************************************************************/
-
-/***********************************************************************
- * @Function: ns9750_mii_identify_phy
- * @Return: 1 if supported PHY has been detected otherwise 0
- * @Descr: checks for supported PHY and prints the IDs.
- ***********************************************************************/
-
-static char ns9750_mii_identify_phy (void)
-{
-	unsigned short uiID1;
-	unsigned short uiID2;
-	unsigned char *szName;
-	char cRes = 0;
-
-	DEBUG_FN (DEBUG_MII);
-
-	phyDetected = (PhyType) uiID1 = ns9750_mii_read(MII_PHYSID1);
-
-	switch (phyDetected) {
-	case PHY_LXT971A:
-		szName = "LXT971A";
-		uiID2 = ns9750_mii_read(MII_PHYSID2);
-		nPhyMaxMdioClock = PHY_LXT971_MDIO_MAX_CLK;
-		cRes = 1;
-		break;
-	case PHY_NONE:
-	default:
-		/* in case uiID1 == 0 && uiID2 == 0 we may have the wrong
-		   address or reset sets the wrong NS9750_ETH_MCFG_CLKS */
-
-		uiID2 = 0;
-		szName = "unknown";
-		nPhyMaxMdioClock = PHY_MDIO_MAX_CLK;
-		phyDetected = PHY_NONE;
-	}
-
-	printk (KERN_INFO NS9750_DRIVER_NAME
-		": PHY (0x%x, 0x%x) = %s detected\n", uiID1, uiID2, szName);
-
-	return cRes;
-}
-
-/***********************************************************************
- * @Function: ns9750_mii_read
- * @Return: the data read from PHY register uiRegister
- * @Descr: the data read may be invalid if timed out. If so, a message
- *	   is printed but the invalid data is returned.
- *	   The fixed device address is being used.
- ***********************************************************************/
-
-static unsigned short ns9750_mii_read (unsigned short uiRegister)
-{
-	DEBUG_FN (DEBUG_MII_LOW);
-
-	/* write MII register to be read */
-	*get_eth_reg_addr (NS9750_ETH_MADR) =
-		NS9750_ETH_PHY_ADDRESS << 8 | uiRegister;
-
-	*get_eth_reg_addr (NS9750_ETH_MCMD) = NS9750_ETH_MCMD_READ;
-
-	if (!ns9750_mii_poll_busy ())
-		printk (KERN_WARNING NS9750_DRIVER_NAME
-			": MII still busy in read\n");
-	/* continue to read */
-
-	*get_eth_reg_addr (NS9750_ETH_MCMD) = 0;
-
-	return (unsigned short) (*get_eth_reg_addr (NS9750_ETH_MRDD));
-}
-
-
-/***********************************************************************
- * @Function: ns9750_mii_write
- * @Return: nothing
- * @Descr: writes the data to the PHY register. In case of a timeout,
- *	   no special handling is performed but a message printed
- *	   The fixed device address is being used.
- ***********************************************************************/
-
-static void ns9750_mii_write (unsigned short uiRegister,
-			      unsigned short uiData)
-{
-	DEBUG_FN (DEBUG_MII_LOW);
-
-	/* write MII register to be written */
-	*get_eth_reg_addr (NS9750_ETH_MADR) =
-		NS9750_ETH_PHY_ADDRESS << 8 | uiRegister;
-
-	*get_eth_reg_addr (NS9750_ETH_MWTD) = uiData;
-
-	if (!ns9750_mii_poll_busy ()) {
-		printf (KERN_WARNING NS9750_DRIVER_NAME
-			": MII still busy in write\n");
-	}
-}
-
-
-/***********************************************************************
- * @Function: ns9750_mii_get_clock_divisor
- * @Return: the clock divisor that should be used in NS9750_ETH_MCFG_CLKS
- * @Descr: if no clock divisor can be calculated for the
- *	   current SYSCLK and the maximum MDIO Clock, a warning is printed
- *	   and the greatest divisor is taken
- ***********************************************************************/
-
-static unsigned int ns9750_mii_get_clock_divisor (unsigned int unMaxMDIOClk)
-{
-	struct {
-		unsigned int unSysClkDivisor;
-		unsigned int unClks;	/* field for NS9750_ETH_MCFG_CLKS */
-	} PHYClockDivisors[] = {
-		{
-		4, NS9750_ETH_MCFG_CLKS_4}, {
-		6, NS9750_ETH_MCFG_CLKS_6}, {
-		8, NS9750_ETH_MCFG_CLKS_8}, {
-		10, NS9750_ETH_MCFG_CLKS_10}, {
-		20, NS9750_ETH_MCFG_CLKS_20}, {
-		30, NS9750_ETH_MCFG_CLKS_30}, {
-		40, NS9750_ETH_MCFG_CLKS_40}
-	};
-
-	int nIndexSysClkDiv;
-	int nArraySize =
-		sizeof (PHYClockDivisors) / sizeof (PHYClockDivisors[0]);
-	unsigned int unClks = NS9750_ETH_MCFG_CLKS_40;	/* defaults to
-							   greatest div */
-
-	DEBUG_FN (DEBUG_INIT);
-
-	for (nIndexSysClkDiv = 0; nIndexSysClkDiv < nArraySize;
-	     nIndexSysClkDiv++) {
-		/* find first sysclock divisor that isn't higher than 2.5 MHz
-		   clock */
-		if (AHB_CLK_FREQ /
-		    PHYClockDivisors[nIndexSysClkDiv].unSysClkDivisor <=
-		    unMaxMDIOClk) {
-			unClks = PHYClockDivisors[nIndexSysClkDiv].unClks;
-			break;
-		}
-	}
-
-	DEBUG_ARGS2 (DEBUG_INIT,
-		     "Taking MDIO Clock bit mask 0x%0x for max clock %i\n",
-		     unClks, unMaxMDIOClk);
-
-	/* return greatest divisor */
-	return unClks;
-}
-
-/***********************************************************************
- * @Function: ns9750_mii_poll_busy
- * @Return: 0 if timed out otherwise the remaing timeout
- * @Descr: waits until the MII has completed a command or it times out
- *	   code may be interrupted by hard interrupts.
- *	   It is not checked what happens on multiple actions when
- *	   the first is still being busy and we timeout.
- ***********************************************************************/
-
-static unsigned int ns9750_mii_poll_busy (void)
-{
-	unsigned int unTimeout = 10000;
-
-	DEBUG_FN (DEBUG_MII_LOW);
-
-	while (((*get_eth_reg_addr (NS9750_ETH_MIND) & NS9750_ETH_MIND_BUSY)
-		== NS9750_ETH_MIND_BUSY) && unTimeout)
-		unTimeout--;
-
-	return unTimeout;
-}