NET: move legacy enc28j60.c to sidetrack as enc28j60_lpc2292.c

This patch is required before the upcoming new enc28j60 driver
using SPI framework patch can be applied:
- Move legacy enc28j60.c to enc28j60_lpc2292.c.
- Change Makefile and the two affected boards' definition files.

Tested with ./MAKEALL ARM7 that both boards still compile.

Signed-off-by: Reinhard Meyer<info@emk-elektronik.de>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

1 files changed, 0 insertions, 982 deletions

diff --git a/drivers/net/enc28j60.c b/drivers/net/enc28j60.c
deleted file mode 100644
index 3238a50..0000000
--- a/drivers/net/enc28j60.c
+++ /dev/null
@@ -1,982 +0,0 @@
-/*
- * 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 <config.h>
-#include <common.h>
-#include <net.h>
-#include <asm/arch/hardware.h>
-#include <asm/arch/spi.h>
-
-/*
- * Control Registers in Bank 0
- */
-
-#define CTL_REG_ERDPTL	 0x00
-#define CTL_REG_ERDPTH	 0x01
-#define CTL_REG_EWRPTL	 0x02
-#define CTL_REG_EWRPTH	 0x03
-#define CTL_REG_ETXSTL	 0x04
-#define CTL_REG_ETXSTH	 0x05
-#define CTL_REG_ETXNDL	 0x06
-#define CTL_REG_ETXNDH	 0x07
-#define CTL_REG_ERXSTL	 0x08
-#define CTL_REG_ERXSTH	 0x09
-#define CTL_REG_ERXNDL	 0x0A
-#define CTL_REG_ERXNDH	 0x0B
-#define CTL_REG_ERXRDPTL 0x0C
-#define CTL_REG_ERXRDPTH 0x0D
-#define CTL_REG_ERXWRPTL 0x0E
-#define CTL_REG_ERXWRPTH 0x0F
-#define CTL_REG_EDMASTL  0x10
-#define CTL_REG_EDMASTH  0x11
-#define CTL_REG_EDMANDL  0x12
-#define CTL_REG_EDMANDH  0x13
-#define CTL_REG_EDMADSTL 0x14
-#define CTL_REG_EDMADSTH 0x15
-#define CTL_REG_EDMACSL  0x16
-#define CTL_REG_EDMACSH  0x17
-/* these are common in all banks */
-#define CTL_REG_EIE	 0x1B
-#define CTL_REG_EIR	 0x1C
-#define CTL_REG_ESTAT	 0x1D
-#define CTL_REG_ECON2	 0x1E
-#define CTL_REG_ECON1	 0x1F
-
-/*
- * Control Registers in Bank 1
- */
-
-#define CTL_REG_EHT0	0x00
-#define CTL_REG_EHT1	0x01
-#define CTL_REG_EHT2	0x02
-#define CTL_REG_EHT3	0x03
-#define CTL_REG_EHT4	0x04
-#define CTL_REG_EHT5	0x05
-#define CTL_REG_EHT6	0x06
-#define CTL_REG_EHT7	0x07
-#define CTL_REG_EPMM0	0x08
-#define CTL_REG_EPMM1	0x09
-#define CTL_REG_EPMM2	0x0A
-#define CTL_REG_EPMM3	0x0B
-#define CTL_REG_EPMM4	0x0C
-#define CTL_REG_EPMM5	0x0D
-#define CTL_REG_EPMM6	0x0E
-#define CTL_REG_EPMM7	0x0F
-#define CTL_REG_EPMCSL	0x10
-#define CTL_REG_EPMCSH	0x11
-#define CTL_REG_EPMOL	0x14
-#define CTL_REG_EPMOH	0x15
-#define CTL_REG_EWOLIE	0x16
-#define CTL_REG_EWOLIR	0x17
-#define CTL_REG_ERXFCON 0x18
-#define CTL_REG_EPKTCNT 0x19
-
-/*
- * Control Registers in Bank 2
- */
-
-#define CTL_REG_MACON1	 0x00
-#define CTL_REG_MACON2	 0x01
-#define CTL_REG_MACON3	 0x02
-#define CTL_REG_MACON4	 0x03
-#define CTL_REG_MABBIPG  0x04
-#define CTL_REG_MAIPGL	 0x06
-#define CTL_REG_MAIPGH	 0x07
-#define CTL_REG_MACLCON1 0x08
-#define CTL_REG_MACLCON2 0x09
-#define CTL_REG_MAMXFLL  0x0A
-#define CTL_REG_MAMXFLH  0x0B
-#define CTL_REG_MAPHSUP  0x0D
-#define CTL_REG_MICON	 0x11
-#define CTL_REG_MICMD	 0x12
-#define CTL_REG_MIREGADR 0x14
-#define CTL_REG_MIWRL	 0x16
-#define CTL_REG_MIWRH	 0x17
-#define CTL_REG_MIRDL	 0x18
-#define CTL_REG_MIRDH	 0x19
-
-/*
- * Control Registers in Bank 3
- */
-
-#define CTL_REG_MAADR1	0x00
-#define CTL_REG_MAADR0	0x01
-#define CTL_REG_MAADR3	0x02
-#define CTL_REG_MAADR2	0x03
-#define CTL_REG_MAADR5	0x04
-#define CTL_REG_MAADR4	0x05
-#define CTL_REG_EBSTSD	0x06
-#define CTL_REG_EBSTCON 0x07
-#define CTL_REG_EBSTCSL 0x08
-#define CTL_REG_EBSTCSH 0x09
-#define CTL_REG_MISTAT	0x0A
-#define CTL_REG_EREVID	0x12
-#define CTL_REG_ECOCON	0x15
-#define CTL_REG_EFLOCON 0x17
-#define CTL_REG_EPAUSL	0x18
-#define CTL_REG_EPAUSH	0x19
-
-
-/*
- * PHY Register
- */
-
-#define PHY_REG_PHID1 0x02
-#define PHY_REG_PHID2 0x03
-/* taken from the Linux driver */
-#define PHY_REG_PHCON1 0x00
-#define PHY_REG_PHCON2 0x10
-#define PHY_REG_PHLCON 0x14
-
-/*
- * Receive Filter Register (ERXFCON) bits
- */
-
-#define ENC_RFR_UCEN  0x80
-#define ENC_RFR_ANDOR 0x40
-#define ENC_RFR_CRCEN 0x20
-#define ENC_RFR_PMEN  0x10
-#define ENC_RFR_MPEN  0x08
-#define ENC_RFR_HTEN  0x04
-#define ENC_RFR_MCEN  0x02
-#define ENC_RFR_BCEN  0x01
-
-/*
- * ECON1 Register Bits
- */
-
-#define ENC_ECON1_TXRST  0x80
-#define ENC_ECON1_RXRST  0x40
-#define ENC_ECON1_DMAST  0x20
-#define ENC_ECON1_CSUMEN 0x10
-#define ENC_ECON1_TXRTS  0x08
-#define ENC_ECON1_RXEN	 0x04
-#define ENC_ECON1_BSEL1  0x02
-#define ENC_ECON1_BSEL0  0x01
-
-/*
- * ECON2 Register Bits
- */
-#define ENC_ECON2_AUTOINC 0x80
-#define ENC_ECON2_PKTDEC  0x40
-#define ENC_ECON2_PWRSV   0x20
-#define ENC_ECON2_VRPS	  0x08
-
-/*
- * EIR Register Bits
- */
-#define ENC_EIR_PKTIF  0x40
-#define ENC_EIR_DMAIF  0x20
-#define ENC_EIR_LINKIF 0x10
-#define ENC_EIR_TXIF   0x08
-#define ENC_EIR_WOLIF  0x04
-#define ENC_EIR_TXERIF 0x02
-#define ENC_EIR_RXERIF 0x01
-
-/*
- * ESTAT Register Bits
- */
-
-#define ENC_ESTAT_INT	  0x80
-#define ENC_ESTAT_LATECOL 0x10
-#define ENC_ESTAT_RXBUSY  0x04
-#define ENC_ESTAT_TXABRT  0x02
-#define ENC_ESTAT_CLKRDY  0x01
-
-/*
- * EIE Register Bits
- */
-
-#define ENC_EIE_INTIE  0x80
-#define ENC_EIE_PKTIE  0x40
-#define ENC_EIE_DMAIE  0x20
-#define ENC_EIE_LINKIE 0x10
-#define ENC_EIE_TXIE   0x08
-#define ENC_EIE_WOLIE  0x04
-#define ENC_EIE_TXERIE 0x02
-#define ENC_EIE_RXERIE 0x01
-
-/*
- * MACON1 Register Bits
- */
-#define ENC_MACON1_LOOPBK  0x10
-#define ENC_MACON1_TXPAUS  0x08
-#define ENC_MACON1_RXPAUS  0x04
-#define ENC_MACON1_PASSALL 0x02
-#define ENC_MACON1_MARXEN  0x01
-
-
-/*
- * MACON2 Register Bits
- */
-#define ENC_MACON2_MARST   0x80
-#define ENC_MACON2_RNDRST  0x40
-#define ENC_MACON2_MARXRST 0x08
-#define ENC_MACON2_RFUNRST 0x04
-#define ENC_MACON2_MATXRST 0x02
-#define ENC_MACON2_TFUNRST 0x01
-
-/*
- * MACON3 Register Bits
- */
-#define ENC_MACON3_PADCFG2 0x80
-#define ENC_MACON3_PADCFG1 0x40
-#define ENC_MACON3_PADCFG0 0x20
-#define ENC_MACON3_TXCRCEN 0x10
-#define ENC_MACON3_PHDRLEN 0x08
-#define ENC_MACON3_HFRMEN  0x04
-#define ENC_MACON3_FRMLNEN 0x02
-#define ENC_MACON3_FULDPX  0x01
-
-/*
- * MICMD Register Bits
- */
-#define ENC_MICMD_MIISCAN 0x02
-#define ENC_MICMD_MIIRD   0x01
-
-/*
- * MISTAT Register Bits
- */
-#define ENC_MISTAT_NVALID 0x04
-#define ENC_MISTAT_SCAN   0x02
-#define ENC_MISTAT_BUSY   0x01
-
-/*
- * PHID1 and PHID2 values
- */
-#define ENC_PHID1_VALUE 0x0083
-#define ENC_PHID2_VALUE 0x1400
-#define ENC_PHID2_MASK	0xFC00
-
-
-#define ENC_SPI_SLAVE_CS 0x00010000	/* pin P1.16 */
-#define ENC_RESET	 0x00020000	/* pin P1.17 */
-
-#define FAILSAFE_VALUE 5000
-
-/*
- * Controller memory layout:
- *
- * 0x0000 - 0x17ff  6k bytes receive buffer
- * 0x1800 - 0x1fff  2k bytes transmit buffer
- */
-/* Use the lower memory for receiver buffer. See errata pt. 5 */
-#define ENC_RX_BUF_START 0x0000
-#define ENC_TX_BUF_START 0x1800
-/* taken from the Linux driver */
-#define ENC_RX_BUF_END   0x17ff
-#define ENC_TX_BUF_END   0x1fff
-
-/* maximum frame length */
-#define ENC_MAX_FRM_LEN 1518
-
-#define enc_enable() PUT32(IO1CLR, ENC_SPI_SLAVE_CS)
-#define enc_disable() PUT32(IO1SET, ENC_SPI_SLAVE_CS)
-#define enc_cfg_spi() spi_set_cfg(0, 0, 0); spi_set_clock(8);
-
-
-static unsigned char encReadReg (unsigned char regNo);
-static void encWriteReg (unsigned char regNo, unsigned char data);
-static void encWriteRegRetry (unsigned char regNo, unsigned char data, int c);
-static void encReadBuff (unsigned short length, unsigned char *pBuff);
-static void encWriteBuff (unsigned short length, unsigned char *pBuff);
-static void encBitSet (unsigned char regNo, unsigned char data);
-static void encBitClr (unsigned char regNo, unsigned char data);
-static void encReset (void);
-static void encInit (unsigned char *pEthAddr);
-static unsigned short phyRead (unsigned char addr);
-static void phyWrite(unsigned char, unsigned short);
-static void encPoll (void);
-static void encRx (void);
-
-#define m_nic_read(reg) encReadReg(reg)
-#define m_nic_write(reg, data) encWriteReg(reg, data)
-#define m_nic_write_retry(reg, data, count) encWriteRegRetry(reg, data, count)
-#define m_nic_read_data(len, buf) encReadBuff((len), (buf))
-#define m_nic_write_data(len, buf) encWriteBuff((len), (buf))
-
-/* bit field set */
-#define m_nic_bfs(reg, data) encBitSet(reg, data)
-
-/* bit field clear */
-#define m_nic_bfc(reg, data) encBitClr(reg, data)
-
-static unsigned char bank = 0;	/* current bank in enc28j60 */
-static unsigned char next_pointer_lsb;
-static unsigned char next_pointer_msb;
-
-static unsigned char buffer[ENC_MAX_FRM_LEN];
-static int rxResetCounter = 0;
-
-#define RX_RESET_COUNTER 1000;
-
-/*-----------------------------------------------------------------------------
- * Always returns 0
- */
-int eth_init (bd_t * bis)
-{
-	unsigned char estatVal;
-	uchar enetaddr[6];
-
-	/* configure GPIO */
-	(*((volatile unsigned long *) IO1DIR)) |= ENC_SPI_SLAVE_CS;
-	(*((volatile unsigned long *) IO1DIR)) |= ENC_RESET;
-
-	/* CS and RESET active low */
-	PUT32 (IO1SET, ENC_SPI_SLAVE_CS);
-	PUT32 (IO1SET, ENC_RESET);
-
-	spi_init ();
-
-	/* taken from the Linux driver - dangerous stuff here! */
-	/* Wait for CLKRDY to become set (i.e., check that we can communicate with
-	   the ENC) */
-	do
-	{
-		estatVal = m_nic_read(CTL_REG_ESTAT);
-	} while ((estatVal & 0x08) || (~estatVal & ENC_ESTAT_CLKRDY));
-
-	/* initialize controller */
-	encReset ();
-	eth_getenv_enetaddr("ethaddr", enetaddr);
-	encInit (enetaddr);
-
-	m_nic_bfs (CTL_REG_ECON1, ENC_ECON1_RXEN);	/* enable receive */
-
-	return 0;
-}
-
-int eth_send (volatile void *packet, int length)
-{
-	/* check frame length, etc. */
-	/* TODO: */
-
-	/* switch to bank 0 */
-	m_nic_bfc (CTL_REG_ECON1, (ENC_ECON1_BSEL1 | ENC_ECON1_BSEL0));
-
-	/* set EWRPT */
-	m_nic_write (CTL_REG_EWRPTL, (ENC_TX_BUF_START & 0xff));
-	m_nic_write (CTL_REG_EWRPTH, (ENC_TX_BUF_START >> 8));
-
-	/* set ETXND */
-	m_nic_write (CTL_REG_ETXNDL, (length + ENC_TX_BUF_START) & 0xFF);
-	m_nic_write (CTL_REG_ETXNDH, (length + ENC_TX_BUF_START) >> 8);
-
-	/* set ETXST */
-	m_nic_write (CTL_REG_ETXSTL, ENC_TX_BUF_START & 0xFF);
-	m_nic_write (CTL_REG_ETXSTH, ENC_TX_BUF_START >> 8);
-
-	/* write packet */
-	m_nic_write_data (length, (unsigned char *) packet);
-
-	/* taken from the Linux driver */
-	/* Verify that the internal transmit logic has not been altered by excessive
-	   collisions.  See Errata B4 12 and 14.
-	 */
-	if (m_nic_read(CTL_REG_EIR) & ENC_EIR_TXERIF) {
-		m_nic_bfs(CTL_REG_ECON1, ENC_ECON1_TXRST);
-		m_nic_bfc(CTL_REG_ECON1, ENC_ECON1_TXRST);
-	}
-	m_nic_bfc(CTL_REG_EIR, (ENC_EIR_TXERIF | ENC_EIR_TXIF));
-
-	/* set ECON1.TXRTS */
-	m_nic_bfs (CTL_REG_ECON1, ENC_ECON1_TXRTS);
-
-	return 0;
-}
-
-
-/*****************************************************************************
- * This function resets the receiver only. This function may be called from
- * interrupt-context.
- */
-static void encReceiverReset (void)
-{
-	unsigned char econ1;
-
-	econ1 = m_nic_read (CTL_REG_ECON1);
-	if ((econ1 & ENC_ECON1_RXRST) == 0) {
-		m_nic_bfs (CTL_REG_ECON1, ENC_ECON1_RXRST);
-		rxResetCounter = RX_RESET_COUNTER;
-	}
-}
-
-/*****************************************************************************
- * receiver reset timer
- */
-static void encReceiverResetCallback (void)
-{
-	m_nic_bfc (CTL_REG_ECON1, ENC_ECON1_RXRST);
-	m_nic_bfs (CTL_REG_ECON1, ENC_ECON1_RXEN);	/* enable receive */
-}
-
-/*-----------------------------------------------------------------------------
- * Check for received packets. Call NetReceive for each packet. The return
- * value is ignored by the caller.
- */
-int eth_rx (void)
-{
-	if (rxResetCounter > 0 && --rxResetCounter == 0) {
-		encReceiverResetCallback ();
-	}
-
-	encPoll ();
-
-	return 0;
-}
-
-void eth_halt (void)
-{
-	m_nic_bfc (CTL_REG_ECON1, ENC_ECON1_RXEN);	/* disable receive */
-}
-
-/*****************************************************************************/
-
-static void encPoll (void)
-{
-	unsigned char eir_reg;
-	volatile unsigned char estat_reg;
-	unsigned char pkt_cnt;
-
-#ifdef CONFIG_USE_IRQ
-	/* clear global interrupt enable bit in enc28j60 */
-	m_nic_bfc (CTL_REG_EIE, ENC_EIE_INTIE);
-#endif
-	estat_reg = m_nic_read (CTL_REG_ESTAT);
-
-	eir_reg = m_nic_read (CTL_REG_EIR);
-
-	if (eir_reg & ENC_EIR_TXIF) {
-		/* clear TXIF bit in EIR */
-		m_nic_bfc (CTL_REG_EIR, ENC_EIR_TXIF);
-	}
-
-	/* We have to use pktcnt and not pktif bit, see errata pt. 6 */
-
-	/* move to bank 1 */
-	m_nic_bfc (CTL_REG_ECON1, ENC_ECON1_BSEL1);
-	m_nic_bfs (CTL_REG_ECON1, ENC_ECON1_BSEL0);
-
-	/* read pktcnt */
-	pkt_cnt = m_nic_read (CTL_REG_EPKTCNT);
-
-	if (pkt_cnt > 0) {
-		if ((eir_reg & ENC_EIR_PKTIF) == 0) {
-			/*printf("encPoll: pkt cnt > 0, but pktif not set\n"); */
-		}
-		encRx ();
-		/* clear PKTIF bit in EIR, this should not need to be done but it
-		   seems like we get problems if we do not */
-		m_nic_bfc (CTL_REG_EIR, ENC_EIR_PKTIF);
-	}
-
-	if (eir_reg & ENC_EIR_RXERIF) {
-		printf ("encPoll: rx error\n");
-		m_nic_bfc (CTL_REG_EIR, ENC_EIR_RXERIF);
-	}
-	if (eir_reg & ENC_EIR_TXERIF) {
-		printf ("encPoll: tx error\n");
-		m_nic_bfc (CTL_REG_EIR, ENC_EIR_TXERIF);
-	}
-
-#ifdef CONFIG_USE_IRQ
-	/* set global interrupt enable bit in enc28j60 */
-	m_nic_bfs (CTL_REG_EIE, ENC_EIE_INTIE);
-#endif
-}
-
-static void encRx (void)
-{
-	unsigned short pkt_len;
-	unsigned short copy_len;
-	unsigned short status;
-	unsigned char eir_reg;
-	unsigned char pkt_cnt = 0;
-	unsigned short rxbuf_rdpt;
-
-	/* switch to bank 0 */
-	m_nic_bfc (CTL_REG_ECON1, (ENC_ECON1_BSEL1 | ENC_ECON1_BSEL0));
-
-	m_nic_write (CTL_REG_ERDPTL, next_pointer_lsb);
-	m_nic_write (CTL_REG_ERDPTH, next_pointer_msb);
-
-	do {
-		m_nic_read_data (6, buffer);
-		next_pointer_lsb = buffer[0];
-		next_pointer_msb = buffer[1];
-		pkt_len = buffer[2];
-		pkt_len |= (unsigned short) buffer[3] << 8;
-		status = buffer[4];
-		status |= (unsigned short) buffer[5] << 8;
-
-		if (pkt_len <= ENC_MAX_FRM_LEN)
-			copy_len = pkt_len;
-		else
-			copy_len = 0;
-
-		if ((status & (1L << 7)) == 0) /* check Received Ok bit */
-			copy_len = 0;
-
-		/* taken from the Linux driver */
-		/* check if next pointer is resonable */
-		if ((((unsigned int)next_pointer_msb << 8) |
-			(unsigned int)next_pointer_lsb) >= ENC_TX_BUF_START)
-			copy_len = 0;
-
-		if (copy_len > 0) {
-			m_nic_read_data (copy_len, buffer);
-		}
-
-		/* advance read pointer to next pointer */
-		m_nic_write (CTL_REG_ERDPTL, next_pointer_lsb);
-		m_nic_write (CTL_REG_ERDPTH, next_pointer_msb);
-
-		/* decrease packet counter */
-		m_nic_bfs (CTL_REG_ECON2, ENC_ECON2_PKTDEC);
-
-		/* taken from the Linux driver */
-		/* Only odd values should be written to ERXRDPTL,
-		 * see errata B4 pt.13
-		 */
-		rxbuf_rdpt = (next_pointer_msb << 8 | next_pointer_lsb) - 1;
-		if ((rxbuf_rdpt < (m_nic_read(CTL_REG_ERXSTH) << 8 |
-				m_nic_read(CTL_REG_ERXSTL))) || (rxbuf_rdpt >
-				(m_nic_read(CTL_REG_ERXNDH) << 8 |
-				m_nic_read(CTL_REG_ERXNDL)))) {
-			m_nic_write(CTL_REG_ERXRDPTL, m_nic_read(CTL_REG_ERXNDL));
-			m_nic_write(CTL_REG_ERXRDPTH, m_nic_read(CTL_REG_ERXNDH));
-		} else {
-			m_nic_write(CTL_REG_ERXRDPTL, rxbuf_rdpt & 0xFF);
-			m_nic_write(CTL_REG_ERXRDPTH, rxbuf_rdpt >> 8);
-		}
-
-		/* move to bank 1 */
-		m_nic_bfc (CTL_REG_ECON1, ENC_ECON1_BSEL1);
-		m_nic_bfs (CTL_REG_ECON1, ENC_ECON1_BSEL0);
-
-		/* read pktcnt */
-		pkt_cnt = m_nic_read (CTL_REG_EPKTCNT);
-
-		/* switch to bank 0 */
-		m_nic_bfc (CTL_REG_ECON1,
-			   (ENC_ECON1_BSEL1 | ENC_ECON1_BSEL0));
-
-		if (copy_len == 0) {
-			eir_reg = m_nic_read (CTL_REG_EIR);
-			encReceiverReset ();
-			printf ("eth_rx: copy_len=0\n");
-			continue;
-		}
-
-		NetReceive ((unsigned char *) buffer, pkt_len);
-
-		eir_reg = m_nic_read (CTL_REG_EIR);
-	} while (pkt_cnt);	/* Use EPKTCNT not EIR.PKTIF flag, see errata pt. 6 */
-}
-
-static void encWriteReg (unsigned char regNo, unsigned char data)
-{
-	spi_lock ();
-	enc_cfg_spi ();
-	enc_enable ();
-
-	spi_write (0x40 | regNo);	/* write in regNo */
-	spi_write (data);
-
-	enc_disable ();
-	enc_enable ();
-
-	spi_write (0x1f);	/* write reg 0x1f */
-
-	enc_disable ();
-	spi_unlock ();
-}
-
-static void encWriteRegRetry (unsigned char regNo, unsigned char data, int c)
-{
-	unsigned char readback;
-	int i;
-
-	spi_lock ();
-
-	for (i = 0; i < c; i++) {
-		enc_cfg_spi ();
-		enc_enable ();
-
-		spi_write (0x40 | regNo);	/* write in regNo */
-		spi_write (data);
-
-		enc_disable ();
-		enc_enable ();
-
-		spi_write (0x1f);	/* write reg 0x1f */
-
-		enc_disable ();
-
-		spi_unlock ();	/* we must unlock spi first */
-
-		readback = encReadReg (regNo);
-
-		spi_lock ();
-
-		if (readback == data)
-			break;
-	}
-	spi_unlock ();
-
-	if (i == c) {
-		printf ("enc28j60: write reg %d failed\n", regNo);
-	}
-}
-
-static unsigned char encReadReg (unsigned char regNo)
-{
-	unsigned char rxByte;
-
-	spi_lock ();
-	enc_cfg_spi ();
-	enc_enable ();
-
-	spi_write (0x1f);	/* read reg 0x1f */
-
-	bank = spi_read () & 0x3;
-
-	enc_disable ();
-	enc_enable ();
-
-	spi_write (regNo);
-	rxByte = spi_read ();
-
-	/* check if MAC or MII register */
-	if (((bank == 2) && (regNo <= 0x1a)) ||
-	    ((bank == 3) && (regNo <= 0x05 || regNo == 0x0a))) {
-		/* ignore first byte and read another byte */
-		rxByte = spi_read ();
-	}
-
-	enc_disable ();
-	spi_unlock ();
-
-	return rxByte;
-}
-
-static void encReadBuff (unsigned short length, unsigned char *pBuff)
-{
-	spi_lock ();
-	enc_cfg_spi ();
-	enc_enable ();
-
-	spi_write (0x20 | 0x1a);	/* read buffer memory */
-
-	while (length--) {
-		if (pBuff != NULL)
-			*pBuff++ = spi_read ();
-		else
-			spi_write (0);
-	}
-
-	enc_disable ();
-	spi_unlock ();
-}
-
-static void encWriteBuff (unsigned short length, unsigned char *pBuff)
-{
-	spi_lock ();
-	enc_cfg_spi ();
-	enc_enable ();
-
-	spi_write (0x60 | 0x1a);	/* write buffer memory */
-
-	spi_write (0x00);	/* control byte */
-
-	while (length--)
-		spi_write (*pBuff++);
-
-	enc_disable ();
-	spi_unlock ();
-}
-
-static void encBitSet (unsigned char regNo, unsigned char data)
-{
-	spi_lock ();
-	enc_cfg_spi ();
-	enc_enable ();
-
-	spi_write (0x80 | regNo);	/* bit field set */
-	spi_write (data);
-
-	enc_disable ();
-	spi_unlock ();
-}
-
-static void encBitClr (unsigned char regNo, unsigned char data)
-{
-	spi_lock ();
-	enc_cfg_spi ();
-	enc_enable ();
-
-	spi_write (0xA0 | regNo);	/* bit field clear */
-	spi_write (data);
-
-	enc_disable ();
-	spi_unlock ();
-}
-
-static void encReset (void)
-{
-	spi_lock ();
-	enc_cfg_spi ();
-	enc_enable ();
-
-	spi_write (0xff);	/* soft reset */
-
-	enc_disable ();
-	spi_unlock ();
-
-	/* sleep 1 ms. See errata pt. 2 */
-	udelay (1000);
-}
-
-static void encInit (unsigned char *pEthAddr)
-{
-	unsigned short phid1 = 0;
-	unsigned short phid2 = 0;
-
-	/* switch to bank 0 */
-	m_nic_bfc (CTL_REG_ECON1, (ENC_ECON1_BSEL1 | ENC_ECON1_BSEL0));
-
-	/*
-	 * Setup the buffer space. The reset values are valid for the
-	 * other pointers.
-	 */
-	/* We shall not write to ERXST, see errata pt. 5. Instead we
-	   have to make sure that ENC_RX_BUS_START is 0. */
-	m_nic_write_retry (CTL_REG_ERXSTL, (ENC_RX_BUF_START & 0xFF), 1);
-	m_nic_write_retry (CTL_REG_ERXSTH, (ENC_RX_BUF_START >> 8), 1);
-
-	/* taken from the Linux driver */
-	m_nic_write_retry (CTL_REG_ERXNDL, (ENC_RX_BUF_END & 0xFF), 1);
-	m_nic_write_retry (CTL_REG_ERXNDH, (ENC_RX_BUF_END >> 8), 1);
-
-	m_nic_write_retry (CTL_REG_ERDPTL, (ENC_RX_BUF_START & 0xFF), 1);
-	m_nic_write_retry (CTL_REG_ERDPTH, (ENC_RX_BUF_START >> 8), 1);
-
-	next_pointer_lsb = (ENC_RX_BUF_START & 0xFF);
-	next_pointer_msb = (ENC_RX_BUF_START >> 8);
-
-	/* verify identification */
-	phid1 = phyRead (PHY_REG_PHID1);
-	phid2 = phyRead (PHY_REG_PHID2);
-
-	if (phid1 != ENC_PHID1_VALUE
-	    || (phid2 & ENC_PHID2_MASK) != ENC_PHID2_VALUE) {
-		printf ("ERROR: failed to identify controller\n");
-		printf ("phid1 = %x, phid2 = %x\n",
-			phid1, (phid2 & ENC_PHID2_MASK));
-		printf ("should be phid1 = %x, phid2 = %x\n",
-			ENC_PHID1_VALUE, ENC_PHID2_VALUE);
-	}
-
-	/*
-	 * --- MAC Initialization ---
-	 */
-
-	/* Pull MAC out of Reset */
-
-	/* switch to bank 2 */
-	m_nic_bfc (CTL_REG_ECON1, ENC_ECON1_BSEL0);
-	m_nic_bfs (CTL_REG_ECON1, ENC_ECON1_BSEL1);
-
-	/* enable MAC to receive frames */
-	/* added some bits from the Linux driver */
-	m_nic_write_retry (CTL_REG_MACON1
-		,(ENC_MACON1_MARXEN | ENC_MACON1_TXPAUS | ENC_MACON1_RXPAUS)
-		,10);
-
-	/* configure pad, tx-crc and duplex */
-	/* added a bit from the Linux driver */
-	m_nic_write_retry (CTL_REG_MACON3
-		,(ENC_MACON3_PADCFG0 | ENC_MACON3_TXCRCEN | ENC_MACON3_FRMLNEN)
-		,10);
-
-	/* added 4 new lines from the Linux driver */
-	/* Allow infinite deferals if the medium is continously busy */
-	m_nic_write_retry(CTL_REG_MACON4, (1<<6) /*ENC_MACON4_DEFER*/, 10);
-
-	/* Late collisions occur beyond 63 bytes */
-	m_nic_write_retry(CTL_REG_MACLCON2, 63, 10);
-
-	/* Set (low byte) Non-Back-to_Back Inter-Packet Gap. Recommended 0x12 */
-	m_nic_write_retry(CTL_REG_MAIPGL, 0x12, 10);
-
-	/*
-	* Set (high byte) Non-Back-to_Back Inter-Packet Gap. Recommended
-	* 0x0c for half-duplex. Nothing for full-duplex
-	*/
-	m_nic_write_retry(CTL_REG_MAIPGH, 0x0C, 10);
-
-	/* set maximum frame length */
-	m_nic_write_retry (CTL_REG_MAMXFLL, (ENC_MAX_FRM_LEN & 0xff), 10);
-	m_nic_write_retry (CTL_REG_MAMXFLH, (ENC_MAX_FRM_LEN >> 8), 10);
-
-	/*
-	 * Set MAC back-to-back inter-packet gap. Recommended 0x12 for half duplex
-	 * and 0x15 for full duplex.
-	 */
-	m_nic_write_retry (CTL_REG_MABBIPG, 0x12, 10);
-
-	/* set MAC address */
-
-	/* switch to bank 3 */
-	m_nic_bfs (CTL_REG_ECON1, (ENC_ECON1_BSEL0 | ENC_ECON1_BSEL1));
-
-	m_nic_write_retry (CTL_REG_MAADR0, pEthAddr[5], 1);
-	m_nic_write_retry (CTL_REG_MAADR1, pEthAddr[4], 1);
-	m_nic_write_retry (CTL_REG_MAADR2, pEthAddr[3], 1);
-	m_nic_write_retry (CTL_REG_MAADR3, pEthAddr[2], 1);
-	m_nic_write_retry (CTL_REG_MAADR4, pEthAddr[1], 1);
-	m_nic_write_retry (CTL_REG_MAADR5, pEthAddr[0], 1);
-
-	/*
-	* PHY Initialization taken from the Linux driver
-	 */
-
-	/* Prevent automatic loopback of data beeing transmitted by setting
-	   ENC_PHCON2_HDLDIS */
-	phyWrite(PHY_REG_PHCON2, (1<<8));
-
-	/* LEDs configuration
-	 * LEDA: LACFG = 0100 -> display link status
-	 * LEDB: LBCFG = 0111 -> display TX & RX activity
-	 * STRCH = 1 -> LED pulses
-	 */
-	phyWrite(PHY_REG_PHLCON, 0x0472);
-
-	/* Reset PDPXMD-bit => half duplex */
-	phyWrite(PHY_REG_PHCON1, 0);
-
-	/*
-	 * Receive settings
-	 */
-
-#ifdef CONFIG_USE_IRQ
-	/* enable interrupts */
-	m_nic_bfs (CTL_REG_EIE, ENC_EIE_PKTIE);
-	m_nic_bfs (CTL_REG_EIE, ENC_EIE_TXIE);
-	m_nic_bfs (CTL_REG_EIE, ENC_EIE_RXERIE);
-	m_nic_bfs (CTL_REG_EIE, ENC_EIE_TXERIE);
-	m_nic_bfs (CTL_REG_EIE, ENC_EIE_INTIE);
-#endif
-}
-
-/*****************************************************************************
- *
- * Description:
- *    Read PHY registers.
- *
- *    NOTE! This function will change to Bank 2.
- *
- * Params:
- *    [in] addr address of the register to read
- *
- * Returns:
- *    The value in the register
- */
-static unsigned short phyRead (unsigned char addr)
-{
-	unsigned short ret = 0;
-
-	/* move to bank 2 */
-	m_nic_bfc (CTL_REG_ECON1, ENC_ECON1_BSEL0);
-	m_nic_bfs (CTL_REG_ECON1, ENC_ECON1_BSEL1);
-
-	/* write address to MIREGADR */
-	m_nic_write (CTL_REG_MIREGADR, addr);
-
-	/* set MICMD.MIIRD */
-	m_nic_write (CTL_REG_MICMD, ENC_MICMD_MIIRD);
-
-	/* taken from the Linux driver */
-	/* move to bank 3 */
-	m_nic_bfs(CTL_REG_ECON1, ENC_ECON1_BSEL0);
-	m_nic_bfs(CTL_REG_ECON1, ENC_ECON1_BSEL1);
-
-	/* poll MISTAT.BUSY bit until operation is complete */
-	while ((m_nic_read (CTL_REG_MISTAT) & ENC_MISTAT_BUSY) != 0) {
-		static int cnt = 0;
-
-		if (cnt++ >= 1000) {
-			/* GJ - this seems extremely dangerous! */
-			/* printf("#"); */
-			cnt = 0;
-		}
-	}
-
-	/* taken from the Linux driver */
-	/* move to bank 2 */
-	m_nic_bfc(CTL_REG_ECON1, ENC_ECON1_BSEL0);
-	m_nic_bfs(CTL_REG_ECON1, ENC_ECON1_BSEL1);
-
-	/* clear MICMD.MIIRD */
-	m_nic_write (CTL_REG_MICMD, 0);
-
-	ret = (m_nic_read (CTL_REG_MIRDH) << 8);
-	ret |= (m_nic_read (CTL_REG_MIRDL) & 0xFF);
-
-	return ret;
-}
-
-/*****************************************************************************
- *
- * Taken from the Linux driver.
- * Description:
- * Write PHY registers.
- *
- * NOTE! This function will change to Bank 3.
- *
- * Params:
- * [in] addr address of the register to write to
- * [in] data to be written
- *
- * Returns:
- *    None
- */
-static void phyWrite(unsigned char addr, unsigned short data)
-{
-	/* move to bank 2 */
-	m_nic_bfc(CTL_REG_ECON1, ENC_ECON1_BSEL0);
-	m_nic_bfs(CTL_REG_ECON1, ENC_ECON1_BSEL1);
-
-	/* write address to MIREGADR */
-	m_nic_write(CTL_REG_MIREGADR, addr);
-
-	m_nic_write(CTL_REG_MIWRL, data & 0xff);
-	m_nic_write(CTL_REG_MIWRH, data >> 8);
-
-	/* move to bank 3 */
-	m_nic_bfs(CTL_REG_ECON1, ENC_ECON1_BSEL0);
-	m_nic_bfs(CTL_REG_ECON1, ENC_ECON1_BSEL1);
-
-	/* poll MISTAT.BUSY bit until operation is complete */
-	while((m_nic_read(CTL_REG_MISTAT) & ENC_MISTAT_BUSY) != 0) {
-		static int cnt = 0;
-
-		if(cnt++ >= 1000) {
-			cnt = 0;
-		}
-	}
-}