ColdFire: Add MCF547x_8x FEC driver

Signed-off-by: TsiChungLiew <Tsi-Chung.Liew@freescale.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Signed-off by: John Rigby <jrigby@freescale.com>

1 files changed, 571 insertions, 0 deletions

diff --git a/drivers/net/fsl_mcdmafec.c b/drivers/net/fsl_mcdmafec.c
new file mode 100644
index 0000000000..0c876f33bd
--- /dev/null
+++ b/drivers/net/fsl_mcdmafec.c
@@ -0,0 +1,571 @@
+/*
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2007 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 <malloc.h>
+#include <command.h>
+#include <config.h>
+#include <net.h>
+#include <miiphy.h>
+
+#ifdef CONFIG_FSLDMAFEC
+#undef	ET_DEBUG
+#undef	MII_DEBUG
+
+/* Ethernet Transmit and Receive Buffers */
+#define DBUF_LENGTH		1520
+#define PKT_MAXBUF_SIZE		1518
+#define PKT_MINBUF_SIZE		64
+#define PKT_MAXBLR_SIZE		1536
+#define LAST_PKTBUFSRX		PKTBUFSRX - 1
+#define BD_ENET_RX_W_E		(BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY)
+#define BD_ENET_TX_RDY_LST	(BD_ENET_TX_READY | BD_ENET_TX_LAST)
+#define FIFO_ERRSTAT		(FIFO_STAT_RXW | FIFO_STAT_UF | FIFO_STAT_OF)
+
+/* RxBD bits definitions */
+#define BD_ENET_RX_ERR	(BD_ENET_RX_LG | BD_ENET_RX_NO | BD_ENET_RX_CR | \
+			 BD_ENET_RX_OV | BD_ENET_RX_TR)
+
+#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
+#include <asm/immap.h>
+#include <asm/fsl_mcdmafec.h>
+
+#include "MCD_dma.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct fec_info_dma fec_info[] = {
+#ifdef CFG_FEC0_IOBASE
+	{
+	 0,			/* index */
+	 CFG_FEC0_IOBASE,	/* io base */
+	 CFG_FEC0_PINMUX,	/* gpio pin muxing */
+	 CFG_FEC0_MIIBASE,	/* mii base */
+	 -1,			/* phy_addr */
+	 0,			/* duplex and speed */
+	 0,			/* phy name */
+	 0,			/* phyname init */
+	 0,			/* RX BD */
+	 0,			/* TX BD */
+	 0,			/* rx Index */
+	 0,			/* tx Index */
+	 0,			/* tx buffer */
+	 0,			/* initialized flag */
+	 (struct fec_info_dma *)-1,	/* next */
+	 FEC0_RX_TASK,		/* rxTask */
+	 FEC0_TX_TASK,		/* txTask */
+	 FEC0_RX_PRIORITY,	/* rxPri */
+	 FEC0_TX_PRIORITY,	/* txPri */
+	 FEC0_RX_INIT,		/* rxInit */
+	 FEC0_TX_INIT,		/* txInit */
+	 0,			/* usedTbdIndex */
+	 0,			/* cleanTbdNum */
+	 },
+#endif
+#ifdef CFG_FEC1_IOBASE
+	{
+	 1,			/* index */
+	 CFG_FEC1_IOBASE,	/* io base */
+	 CFG_FEC1_PINMUX,	/* gpio pin muxing */
+	 CFG_FEC1_MIIBASE,	/* mii base */
+	 -1,			/* phy_addr */
+	 0,			/* duplex and speed */
+	 0,			/* phy name */
+	 0,			/* phy name init */
+	 0,			/* RX BD */
+	 0,			/* TX BD */
+	 0,			/* rx Index */
+	 0,			/* tx Index */
+	 0,			/* tx buffer */
+	 0,			/* initialized flag */
+	 (struct fec_info_dma *)-1,	/* next */
+	 FEC1_RX_TASK,		/* rxTask */
+	 FEC1_TX_TASK,		/* txTask */
+	 FEC1_RX_PRIORITY,	/* rxPri */
+	 FEC1_TX_PRIORITY,	/* txPri */
+	 FEC1_RX_INIT,		/* rxInit */
+	 FEC1_TX_INIT,		/* txInit */
+	 0,			/* usedTbdIndex */
+	 0,			/* cleanTbdNum */
+	 }
+#endif
+};
+
+static int fec_send(struct eth_device *dev, volatile void *packet, int length);
+static int fec_recv(struct eth_device *dev);
+static int fec_init(struct eth_device *dev, bd_t * bd);
+static void fec_halt(struct eth_device *dev);
+
+#ifdef ET_DEBUG
+static void dbg_fec_regs(struct eth_device *dev)
+{
+	struct fec_info_dma *info = dev->priv;
+	volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
+
+	printf("=====\n");
+	printf("ievent       %x - %x\n", (int)&fecp->eir, fecp->eir);
+	printf("imask        %x - %x\n", (int)&fecp->eimr, fecp->eimr);
+	printf("ecntrl       %x - %x\n", (int)&fecp->ecr, fecp->ecr);
+	printf("mii_mframe   %x - %x\n", (int)&fecp->mmfr, fecp->mmfr);
+	printf("mii_speed    %x - %x\n", (int)&fecp->mscr, fecp->mscr);
+	printf("mii_ctrlstat %x - %x\n", (int)&fecp->mibc, fecp->mibc);
+	printf("r_cntrl      %x - %x\n", (int)&fecp->rcr, fecp->rcr);
+	printf("r hash       %x - %x\n", (int)&fecp->rhr, fecp->rhr);
+	printf("x_cntrl      %x - %x\n", (int)&fecp->tcr, fecp->tcr);
+	printf("padr_l       %x - %x\n", (int)&fecp->palr, fecp->palr);
+	printf("padr_u       %x - %x\n", (int)&fecp->paur, fecp->paur);
+	printf("op_pause     %x - %x\n", (int)&fecp->opd, fecp->opd);
+	printf("iadr_u       %x - %x\n", (int)&fecp->iaur, fecp->iaur);
+	printf("iadr_l       %x - %x\n", (int)&fecp->ialr, fecp->ialr);
+	printf("gadr_u       %x - %x\n", (int)&fecp->gaur, fecp->gaur);
+	printf("gadr_l       %x - %x\n", (int)&fecp->galr, fecp->galr);
+	printf("x_wmrk       %x - %x\n", (int)&fecp->tfwr, fecp->tfwr);
+	printf("r_fdata      %x - %x\n", (int)&fecp->rfdr, fecp->rfdr);
+	printf("r_fstat      %x - %x\n", (int)&fecp->rfsr, fecp->rfsr);
+	printf("r_fctrl      %x - %x\n", (int)&fecp->rfcr, fecp->rfcr);
+	printf("r_flrfp      %x - %x\n", (int)&fecp->rlrfp, fecp->rlrfp);
+	printf("r_flwfp      %x - %x\n", (int)&fecp->rlwfp, fecp->rlwfp);
+	printf("r_frfar      %x - %x\n", (int)&fecp->rfar, fecp->rfar);
+	printf("r_frfrp      %x - %x\n", (int)&fecp->rfrp, fecp->rfrp);
+	printf("r_frfwp      %x - %x\n", (int)&fecp->rfwp, fecp->rfwp);
+	printf("t_fdata      %x - %x\n", (int)&fecp->tfdr, fecp->tfdr);
+	printf("t_fstat      %x - %x\n", (int)&fecp->tfsr, fecp->tfsr);
+	printf("t_fctrl      %x - %x\n", (int)&fecp->tfcr, fecp->tfcr);
+	printf("t_flrfp      %x - %x\n", (int)&fecp->tlrfp, fecp->tlrfp);
+	printf("t_flwfp      %x - %x\n", (int)&fecp->tlwfp, fecp->tlwfp);
+	printf("t_ftfar      %x - %x\n", (int)&fecp->tfar, fecp->tfar);
+	printf("t_ftfrp      %x - %x\n", (int)&fecp->tfrp, fecp->tfrp);
+	printf("t_ftfwp      %x - %x\n", (int)&fecp->tfwp, fecp->tfwp);
+	printf("frst         %x - %x\n", (int)&fecp->frst, fecp->frst);
+	printf("ctcwr        %x - %x\n", (int)&fecp->ctcwr, fecp->ctcwr);
+}
+#endif
+
+static void set_fec_duplex_speed(volatile fecdma_t * fecp, bd_t * bd, int dup_spd)
+{
+	if ((dup_spd >> 16) == FULL) {
+		/* Set maximum frame length */
+		fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) | FEC_RCR_MII_MODE |
+		    FEC_RCR_PROM | 0x100;
+		fecp->tcr = FEC_TCR_FDEN;
+	} else {
+		/* Half duplex mode */
+		fecp->rcr = FEC_RCR_MAX_FL(PKT_MAXBUF_SIZE) |
+		    FEC_RCR_MII_MODE | FEC_RCR_DRT;
+		fecp->tcr &= ~FEC_TCR_FDEN;
+	}
+
+	if ((dup_spd & 0xFFFF) == _100BASET) {
+#ifdef MII_DEBUG
+		printf("100Mbps\n");
+#endif
+		bd->bi_ethspeed = 100;
+	} else {
+#ifdef MII_DEBUG
+		printf("10Mbps\n");
+#endif
+		bd->bi_ethspeed = 10;
+	}
+}
+
+static int fec_send(struct eth_device *dev, volatile void *packet, int length)
+{
+	struct fec_info_dma *info = dev->priv;
+	cbd_t *pTbd, *pUsedTbd;
+	u16 phyStatus;
+
+	miiphy_read(dev->name, info->phy_addr, PHY_BMSR, &phyStatus);
+
+	/* process all the consumed TBDs */
+	while (info->cleanTbdNum < CFG_TX_ETH_BUFFER) {
+		pUsedTbd = &info->txbd[info->usedTbdIdx];
+		if (pUsedTbd->cbd_sc & BD_ENET_TX_READY) {
+#ifdef ET_DEBUG
+			printf("Cannot clean TBD %d, in use\n",
+			       info->cleanTbdNum);
+#endif
+			return 0;
+		}
+
+		/* clean this buffer descriptor */
+		if (info->usedTbdIdx == (CFG_TX_ETH_BUFFER - 1))
+			pUsedTbd->cbd_sc = BD_ENET_TX_WRAP;
+		else
+			pUsedTbd->cbd_sc = 0;
+
+		/* update some indeces for a correct handling of the TBD ring */
+		info->cleanTbdNum++;
+		info->usedTbdIdx = (info->usedTbdIdx + 1) % CFG_TX_ETH_BUFFER;
+	}
+
+	/* Check for valid length of data. */
+	if ((length > 1500) || (length <= 0)) {
+		return -1;
+	}
+
+	/* Check the number of vacant TxBDs. */
+	if (info->cleanTbdNum < 1) {
+		printf("No available TxBDs ...\n");
+		return -1;
+	}
+
+	/* Get the first TxBD to send the mac header */
+	pTbd = &info->txbd[info->txIdx];
+	pTbd->cbd_datlen = length;
+	pTbd->cbd_bufaddr = (u32) packet;
+	pTbd->cbd_sc |= BD_ENET_TX_LAST | BD_ENET_TX_TC | BD_ENET_TX_READY;
+	info->txIdx = (info->txIdx + 1) % CFG_TX_ETH_BUFFER;
+
+	/* Enable DMA transmit task */
+	MCD_continDma(info->txTask);
+
+	info->cleanTbdNum -= 1;
+
+	/* wait until frame is sent . */
+	while (pTbd->cbd_sc & BD_ENET_TX_READY) {
+		udelay(10);
+	}
+
+	return (int)(info->txbd[info->txIdx].cbd_sc & BD_ENET_TX_STATS);
+}
+
+static int fec_recv(struct eth_device *dev)
+{
+	struct fec_info_dma *info = dev->priv;
+	volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
+
+	cbd_t *pRbd = &info->rxbd[info->rxIdx];
+	u32 ievent;
+	int frame_length, len = 0;
+
+	/* Check if any critical events have happened */
+	ievent = fecp->eir;
+	if (ievent != 0) {
+		fecp->eir = ievent;
+
+		if (ievent & (FEC_EIR_BABT | FEC_EIR_TXERR | FEC_EIR_RXERR)) {
+			printf("fec_recv: error\n");
+			fec_halt(dev);
+			fec_init(dev, NULL);
+			return 0;
+		}
+
+		if (ievent & FEC_EIR_HBERR) {
+			/* Heartbeat error */
+			fecp->tcr |= FEC_TCR_GTS;
+		}
+
+		if (ievent & FEC_EIR_GRA) {
+			/* Graceful stop complete */
+			if (fecp->tcr & FEC_TCR_GTS) {
+				printf("fec_recv: tcr_gts\n");
+				fec_halt(dev);
+				fecp->tcr &= ~FEC_TCR_GTS;
+				fec_init(dev, NULL);
+			}
+		}
+	}
+
+	if (!(pRbd->cbd_sc & BD_ENET_RX_EMPTY)) {
+		if ((pRbd->cbd_sc & BD_ENET_RX_LAST)
+		    && !(pRbd->cbd_sc & BD_ENET_RX_ERR)
+		    && ((pRbd->cbd_datlen - 4) > 14)) {
+
+			/* Get buffer address and size */
+			frame_length = pRbd->cbd_datlen - 4;
+
+			/* Fill the buffer and pass it to upper layers */
+			NetReceive((volatile uchar *)pRbd->cbd_bufaddr,
+				   frame_length);
+			len = frame_length;
+		}
+
+		/* Reset buffer descriptor as empty */
+		if ((info->rxIdx) == (PKTBUFSRX - 1))
+			pRbd->cbd_sc = (BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
+		else
+			pRbd->cbd_sc = BD_ENET_RX_EMPTY;
+
+		pRbd->cbd_datlen = PKTSIZE_ALIGN;
+
+		/* Now, we have an empty RxBD, restart the DMA receive task */
+		MCD_continDma(info->rxTask);
+
+		/* Increment BD count */
+		info->rxIdx = (info->rxIdx + 1) % PKTBUFSRX;
+	}
+
+	return len;
+}
+
+static void fec_set_hwaddr(volatile fecdma_t * fecp, u8 * mac)
+{
+	u8 currByte;		/* byte for which to compute the CRC */
+	int byte;		/* loop - counter */
+	int bit;		/* loop - counter */
+	u32 crc = 0xffffffff;	/* initial value */
+
+	for (byte = 0; byte < 6; byte++) {
+		currByte = mac[byte];
+		for (bit = 0; bit < 8; bit++) {
+			if ((currByte & 0x01) ^ (crc & 0x01)) {
+				crc >>= 1;
+				crc = crc ^ 0xedb88320;
+			} else {
+				crc >>= 1;
+			}
+			currByte >>= 1;
+		}
+	}
+
+	crc = crc >> 26;
+
+	/* Set individual hash table register */
+	if (crc >= 32) {
+		fecp->ialr = (1 << (crc - 32));
+		fecp->iaur = 0;
+	} else {
+		fecp->ialr = 0;
+		fecp->iaur = (1 << crc);
+	}
+
+	/* Set physical address */
+	fecp->palr = (mac[0] << 24) + (mac[1] << 16) + (mac[2] << 8) + mac[3];
+	fecp->paur = (mac[4] << 24) + (mac[5] << 16) + 0x8808;
+
+	/* Clear multicast address hash table */
+	fecp->gaur = 0;
+	fecp->galr = 0;
+}
+
+static int fec_init(struct eth_device *dev, bd_t * bd)
+{
+	struct fec_info_dma *info = dev->priv;
+	volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
+	int i;
+
+#ifdef ET_DEBUG
+	printf("fec_init: iobase 0x%08x ...\n", info->iobase);
+#endif
+
+	fecpin_setclear(dev, 1);
+
+	fec_halt(dev);
+
+#if defined(CONFIG_CMD_MII) || defined (CONFIG_MII) || \
+	defined (CFG_DISCOVER_PHY)
+
+	mii_init();
+
+	set_fec_duplex_speed(fecp, bd, info->dup_spd);
+#else
+#ifndef CFG_DISCOVER_PHY
+	set_fec_duplex_speed(fecp, bd, (FECDUPLEX << 16) | FECSPEED);
+#endif				/* ifndef CFG_DISCOVER_PHY */
+#endif				/* CONFIG_CMD_MII || CONFIG_MII */
+
+	/* We use strictly polling mode only */
+	fecp->eimr = 0;
+
+	/* Clear any pending interrupt */
+	fecp->eir = 0xffffffff;
+
+	/* Set station address   */
+	if ((u32) fecp == CFG_FEC0_IOBASE) {
+		fec_set_hwaddr(fecp, bd->bi_enetaddr);
+	} else {
+		fec_set_hwaddr(fecp, bd->bi_enet1addr);
+	}
+
+	/* Set Opcode/Pause Duration Register */
+	fecp->opd = 0x00010020;
+
+	/* Setup Buffers and Buffer Desriptors */
+	info->rxIdx = 0;
+	info->txIdx = 0;
+
+	/* Setup Receiver Buffer Descriptors (13.14.24.18)
+	 * Settings:     Empty, Wrap */
+	for (i = 0; i < PKTBUFSRX; i++) {
+		info->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
+		info->rxbd[i].cbd_datlen = PKTSIZE_ALIGN;
+		info->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
+	}
+	info->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
+
+	/* Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
+	 * Settings:    Last, Tx CRC */
+	for (i = 0; i < CFG_TX_ETH_BUFFER; i++) {
+		info->txbd[i].cbd_sc = 0;
+		info->txbd[i].cbd_datlen = 0;
+		info->txbd[i].cbd_bufaddr = (uint) (&info->txbuf[0]);
+	}
+	info->txbd[CFG_TX_ETH_BUFFER - 1].cbd_sc |= BD_ENET_TX_WRAP;
+
+	info->usedTbdIdx = 0;
+	info->cleanTbdNum = CFG_TX_ETH_BUFFER;
+
+	/* Set Rx FIFO alarm and granularity value */
+	fecp->rfcr = 0x0c000000;
+	fecp->rfar = 0x0000030c;
+
+	/* Set Tx FIFO granularity value */
+	fecp->tfcr = FIFO_CTRL_FRAME | FIFO_CTRL_GR(6) | 0x00040000;
+	fecp->tfar = 0x00000080;
+
+	fecp->tfwr = 0x2;
+	fecp->ctcwr = 0x03000000;
+
+	/* Enable DMA receive task */
+	MCD_startDma(info->rxTask,	/* Dma channel */
+		     (s8 *) info->rxbd,	/*Source Address */
+		     0,		/* Source increment */
+		     (s8 *) (&fecp->rfdr),	/* dest */
+		     4,		/* dest increment */
+		     0,		/* DMA size */
+		     4,		/* xfer size */
+		     info->rxInit,	/* initiator */
+		     info->rxPri,	/* priority */
+		     (MCD_FECRX_DMA | MCD_TT_FLAGS_DEF),	/* Flags */
+		     (MCD_NO_CSUM | MCD_NO_BYTE_SWAP)	/* Function description */
+	    );
+
+	/* Enable DMA tx task with no ready buffer descriptors */
+	MCD_startDma(info->txTask,	/* Dma channel */
+		     (s8 *) info->txbd,	/*Source Address */
+		     0,		/* Source increment */
+		     (s8 *) (&fecp->tfdr),	/* dest */
+		     4,		/* dest incr */
+		     0,		/* DMA size */
+		     4,		/* xfer size */
+		     info->txInit,	/* initiator */
+		     info->txPri,	/* priority */
+		     (MCD_FECTX_DMA | MCD_TT_FLAGS_DEF),	/* Flags */
+		     (MCD_NO_CSUM | MCD_NO_BYTE_SWAP)	/* Function description */
+	    );
+
+	/* Now enable the transmit and receive processing */
+	fecp->ecr |= FEC_ECR_ETHER_EN;
+
+	return 1;
+}
+
+static void fec_halt(struct eth_device *dev)
+{
+	struct fec_info_dma *info = dev->priv;
+	volatile fecdma_t *fecp = (fecdma_t *) (info->iobase);
+	int counter = 0xffff;
+
+	/* issue graceful stop command to the FEC transmitter if necessary */
+	fecp->tcr |= FEC_TCR_GTS;
+
+	/* wait for graceful stop to register */
+	while ((counter--) && (!(fecp->eir & FEC_EIR_GRA))) ;
+
+	/* Disable DMA tasks */
+	MCD_killDma(info->txTask);
+	MCD_killDma(info->rxTask);;
+
+	/* Disable the Ethernet Controller */
+	fecp->ecr &= ~FEC_ECR_ETHER_EN;
+
+	/* Clear FIFO status registers */
+	fecp->rfsr &= FIFO_ERRSTAT;
+	fecp->tfsr &= FIFO_ERRSTAT;
+
+	fecp->frst = 0x01000000;
+
+	/* Issue a reset command to the FEC chip */
+	fecp->ecr |= FEC_ECR_RESET;
+
+	/* wait at least 20 clock cycles */
+	udelay(10000);
+
+#ifdef ET_DEBUG
+	printf("Ethernet task stopped\n");
+#endif
+}
+
+int mcdmafec_initialize(bd_t * bis)
+{
+	struct eth_device *dev;
+	int i;
+
+	for (i = 0; i < sizeof(fec_info) / sizeof(fec_info[0]); i++) {
+
+		dev =
+		    (struct eth_device *)memalign(CFG_CACHELINE_SIZE,
+						  sizeof *dev);
+		if (dev == NULL)
+			hang();
+
+		memset(dev, 0, sizeof(*dev));
+
+		sprintf(dev->name, "FEC%d", fec_info[i].index);
+
+		dev->priv = &fec_info[i];
+		dev->init = fec_init;
+		dev->halt = fec_halt;
+		dev->send = fec_send;
+		dev->recv = fec_recv;
+
+		/* setup Receive and Transmit buffer descriptor */
+		fec_info[i].rxbd =
+		    (cbd_t *) memalign(CFG_CACHELINE_SIZE,
+				       (PKTBUFSRX * sizeof(cbd_t)));
+		fec_info[i].txbd =
+		    (cbd_t *) memalign(CFG_CACHELINE_SIZE,
+				       (CFG_TX_ETH_BUFFER * sizeof(cbd_t)));
+		fec_info[i].txbuf =
+		    (char *)memalign(CFG_CACHELINE_SIZE, DBUF_LENGTH);
+
+#ifdef ET_DEBUG
+		printf("rxbd %x txbd %x\n",
+		       (int)fec_info[i].rxbd, (int)fec_info[i].txbd);
+#endif
+
+		fec_info[i].phy_name = (char *)memalign(CFG_CACHELINE_SIZE, 32);
+
+		eth_register(dev);
+
+#if defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
+		miiphy_register(dev->name,
+				mcffec_miiphy_read, mcffec_miiphy_write);
+#endif
+
+		if (i > 0)
+			fec_info[i - 1].next = &fec_info[i];
+	}
+	fec_info[i - 1].next = &fec_info[0];
+
+	/* default speed */
+	bis->bi_ethspeed = 10;
+
+	return 1;
+}
+
+#endif				/* CONFIG_CMD_NET && CONFIG_NET_MULTI */
+#endif				/* CONFIG_FSLDMAFEC */