SPEAr : Network driver support added

Designware network driver support added.
This is a Synopsys ethernet controller

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

5 files changed, 822 insertions, 0 deletions

diff --git a/doc/README.designware_eth b/doc/README.designware_eth
new file mode 100644
index 0000000..25ec6bd
--- /dev/null
+++ b/doc/README.designware_eth
@@ -0,0 +1,25 @@
+This driver supports Designware Ethernet Controller provided by Synopsis.
+
+The driver is enabled by CONFIG_DESIGNWARE_ETH.
+
+The driver has been developed and tested on SPEAr platforms. By default, the
+MDIO interface works at 100/Full. #defining the below options in board
+configuration file changes this behavior.
+
+Call an subroutine from respective board/.../board.c
+designware_initialize(u32 id, ulong base_addr, u32 phy_addr);
+
+The various options suported by the driver are
+1. CONFIG_DW_ALTDESCRIPTOR
+	Define this to use the Alternate/Enhanced Descriptor configurations.
+1. CONFIG_DW_AUTONEG
+	Define this to autonegotiate with the host before proceeding with mac
+	level configuration. This obviates the definitions of CONFIG_DW_SPEED10M
+	and CONFIG_DW_DUPLEXHALF.
+2. CONFIG_DW_SPEED10M
+	Define this to change the default behavior from 100Mbps to 10Mbps.
+3. CONFIG_DW_DUPLEXHALF
+	Define this to change the default behavior from Full Duplex to Half.
+4. CONFIG_DW_SEARCH_PHY
+	Define this to search the phy address. This would overwrite the value
+	passed as 3rd arg from designware_initialize routine.
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index b75c02f..7a320fd 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -34,6 +34,7 @@ COBJS-$(CONFIG_BCM570x) += bcm570x.o bcm570x_autoneg.o 5701rls.o
 COBJS-$(CONFIG_BFIN_MAC) += bfin_mac.o
 COBJS-$(CONFIG_CS8900) += cs8900.o
 COBJS-$(CONFIG_TULIP) += dc2114x.o
+COBJS-$(CONFIG_DESIGNWARE_ETH) += designware.o
 COBJS-$(CONFIG_DRIVER_DM9000) += dm9000x.o
 COBJS-$(CONFIG_DNET) += dnet.o
 COBJS-$(CONFIG_E1000) += e1000.o
diff --git a/drivers/net/designware.c b/drivers/net/designware.c
new file mode 100644
index 0000000..d0d9827
--- /dev/null
+++ b/drivers/net/designware.c
@@ -0,0 +1,531 @@
+/*
+ * (C) Copyright 2010
+ * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.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
+ */
+
+/*
+ * Designware ethernet IP driver for u-boot
+ */
+
+#include <common.h>
+#include <miiphy.h>
+#include <malloc.h>
+#include <linux/err.h>
+#include <asm/io.h>
+#include "designware.h"
+
+static void tx_descs_init(struct eth_device *dev)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	struct eth_dma_regs *dma_p = priv->dma_regs_p;
+	struct dmamacdescr *desc_table_p = &priv->tx_mac_descrtable[0];
+	char *txbuffs = &priv->txbuffs[0];
+	struct dmamacdescr *desc_p;
+	u32 idx;
+
+	for (idx = 0; idx < CONFIG_TX_DESCR_NUM; idx++) {
+		desc_p = &desc_table_p[idx];
+		desc_p->dmamac_addr = &txbuffs[idx * CONFIG_ETH_BUFSIZE];
+		desc_p->dmamac_next = &desc_table_p[idx + 1];
+
+#if defined(CONFIG_DW_ALTDESCRIPTOR)
+		desc_p->txrx_status &= ~(DESC_TXSTS_TXINT | DESC_TXSTS_TXLAST |
+				DESC_TXSTS_TXFIRST | DESC_TXSTS_TXCRCDIS | \
+				DESC_TXSTS_TXCHECKINSCTRL | \
+				DESC_TXSTS_TXRINGEND | DESC_TXSTS_TXPADDIS);
+
+		desc_p->txrx_status |= DESC_TXSTS_TXCHAIN;
+		desc_p->dmamac_cntl = 0;
+		desc_p->txrx_status &= ~(DESC_TXSTS_MSK | DESC_TXSTS_OWNBYDMA);
+#else
+		desc_p->dmamac_cntl = DESC_TXCTRL_TXCHAIN;
+		desc_p->txrx_status = 0;
+#endif
+	}
+
+	/* Correcting the last pointer of the chain */
+	desc_p->dmamac_next = &desc_table_p[0];
+
+	writel((ulong)&desc_table_p[0], &dma_p->txdesclistaddr);
+}
+
+static void rx_descs_init(struct eth_device *dev)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	struct eth_dma_regs *dma_p = priv->dma_regs_p;
+	struct dmamacdescr *desc_table_p = &priv->rx_mac_descrtable[0];
+	char *rxbuffs = &priv->rxbuffs[0];
+	struct dmamacdescr *desc_p;
+	u32 idx;
+
+	for (idx = 0; idx < CONFIG_RX_DESCR_NUM; idx++) {
+		desc_p = &desc_table_p[idx];
+		desc_p->dmamac_addr = &rxbuffs[idx * CONFIG_ETH_BUFSIZE];
+		desc_p->dmamac_next = &desc_table_p[idx + 1];
+
+		desc_p->dmamac_cntl =
+			(MAC_MAX_FRAME_SZ & DESC_RXCTRL_SIZE1MASK) | \
+				      DESC_RXCTRL_RXCHAIN;
+
+		desc_p->txrx_status = DESC_RXSTS_OWNBYDMA;
+	}
+
+	/* Correcting the last pointer of the chain */
+	desc_p->dmamac_next = &desc_table_p[0];
+
+	writel((ulong)&desc_table_p[0], &dma_p->rxdesclistaddr);
+}
+
+static void descs_init(struct eth_device *dev)
+{
+	tx_descs_init(dev);
+	rx_descs_init(dev);
+}
+
+static int mac_reset(struct eth_device *dev)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	struct eth_mac_regs *mac_p = priv->mac_regs_p;
+	struct eth_dma_regs *dma_p = priv->dma_regs_p;
+
+	int timeout = CONFIG_MACRESET_TIMEOUT;
+
+	writel(DMAMAC_SRST, &dma_p->busmode);
+	writel(MII_PORTSELECT, &mac_p->conf);
+
+	do {
+		if (!(readl(&dma_p->busmode) & DMAMAC_SRST))
+			return 0;
+		udelay(1000);
+	} while (timeout--);
+
+	return -1;
+}
+
+static int dw_write_hwaddr(struct eth_device *dev)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	struct eth_mac_regs *mac_p = priv->mac_regs_p;
+	u32 macid_lo, macid_hi;
+	u8 *mac_id = &dev->enetaddr[0];
+
+	macid_lo = mac_id[0] + (mac_id[1] << 8) + \
+		   (mac_id[2] << 16) + (mac_id[3] << 24);
+	macid_hi = mac_id[4] + (mac_id[5] << 8);
+
+	writel(macid_hi, &mac_p->macaddr0hi);
+	writel(macid_lo, &mac_p->macaddr0lo);
+
+	return 0;
+}
+
+static int dw_eth_init(struct eth_device *dev, bd_t *bis)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	struct eth_mac_regs *mac_p = priv->mac_regs_p;
+	struct eth_dma_regs *dma_p = priv->dma_regs_p;
+	u32 conf;
+
+	/* Reset ethernet hardware */
+	if (mac_reset(dev) < 0)
+		return -1;
+
+	writel(FIXEDBURST | PRIORXTX_41 | BURST_16,
+			&dma_p->busmode);
+
+	writel(FLUSHTXFIFO | readl(&dma_p->opmode), &dma_p->opmode);
+	writel(STOREFORWARD | TXSECONDFRAME, &dma_p->opmode);
+
+	conf = FRAMEBURSTENABLE | DISABLERXOWN;
+
+	if (priv->speed != SPEED_1000M)
+		conf |= MII_PORTSELECT;
+
+	if (priv->duplex == FULL_DUPLEX)
+		conf |= FULLDPLXMODE;
+
+	writel(conf, &mac_p->conf);
+
+	descs_init(dev);
+
+	/*
+	 * Start/Enable xfer at dma as well as mac level
+	 */
+	writel(readl(&dma_p->opmode) | RXSTART, &dma_p->opmode);
+	writel(readl(&dma_p->opmode) | TXSTART, &dma_p->opmode);
+
+	writel(readl(&mac_p->conf) | RXENABLE, &mac_p->conf);
+	writel(readl(&mac_p->conf) | TXENABLE, &mac_p->conf);
+
+	return 0;
+}
+
+static int dw_eth_send(struct eth_device *dev, volatile void *packet,
+		int length)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	struct eth_dma_regs *dma_p = priv->dma_regs_p;
+	u32 desc_num = priv->tx_currdescnum;
+	struct dmamacdescr *desc_p = &priv->tx_mac_descrtable[desc_num];
+
+	/* Check if the descriptor is owned by CPU */
+	if (desc_p->txrx_status & DESC_TXSTS_OWNBYDMA) {
+		printf("CPU not owner of tx frame\n");
+		return -1;
+	}
+
+	memcpy((void *)desc_p->dmamac_addr, (void *)packet, length);
+
+#if defined(CONFIG_DW_ALTDESCRIPTOR)
+	desc_p->txrx_status |= DESC_TXSTS_TXFIRST | DESC_TXSTS_TXLAST;
+	desc_p->dmamac_cntl |= (length << DESC_TXCTRL_SIZE1SHFT) & \
+			       DESC_TXCTRL_SIZE1MASK;
+
+	desc_p->txrx_status &= ~(DESC_TXSTS_MSK);
+	desc_p->txrx_status |= DESC_TXSTS_OWNBYDMA;
+#else
+	desc_p->dmamac_cntl |= ((length << DESC_TXCTRL_SIZE1SHFT) & \
+			       DESC_TXCTRL_SIZE1MASK) | DESC_TXCTRL_TXLAST | \
+			       DESC_TXCTRL_TXFIRST;
+
+	desc_p->txrx_status = DESC_TXSTS_OWNBYDMA;
+#endif
+
+	/* Test the wrap-around condition. */
+	if (++desc_num >= CONFIG_TX_DESCR_NUM)
+		desc_num = 0;
+
+	priv->tx_currdescnum = desc_num;
+
+	/* Start the transmission */
+	writel(POLL_DATA, &dma_p->txpolldemand);
+
+	return 0;
+}
+
+static int dw_eth_recv(struct eth_device *dev)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	u32 desc_num = priv->rx_currdescnum;
+	struct dmamacdescr *desc_p = &priv->rx_mac_descrtable[desc_num];
+
+	u32 status = desc_p->txrx_status;
+	int length = 0;
+
+	/* Check  if the owner is the CPU */
+	if (!(status & DESC_RXSTS_OWNBYDMA)) {
+
+		length = (status & DESC_RXSTS_FRMLENMSK) >> \
+			 DESC_RXSTS_FRMLENSHFT;
+
+		NetReceive(desc_p->dmamac_addr, length);
+
+		/*
+		 * Make the current descriptor valid again and go to
+		 * the next one
+		 */
+		desc_p->txrx_status |= DESC_RXSTS_OWNBYDMA;
+
+		/* Test the wrap-around condition. */
+		if (++desc_num >= CONFIG_RX_DESCR_NUM)
+			desc_num = 0;
+	}
+
+	priv->rx_currdescnum = desc_num;
+
+	return length;
+}
+
+static void dw_eth_halt(struct eth_device *dev)
+{
+	struct dw_eth_dev *priv = dev->priv;
+
+	mac_reset(dev);
+	priv->tx_currdescnum = priv->rx_currdescnum = 0;
+}
+
+static int eth_mdio_read(struct eth_device *dev, u8 addr, u8 reg, u16 *val)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	struct eth_mac_regs *mac_p = priv->mac_regs_p;
+	u32 miiaddr;
+	int timeout = CONFIG_MDIO_TIMEOUT;
+
+	miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) | \
+		  ((reg << MIIREGSHIFT) & MII_REGMSK);
+
+	writel(miiaddr | MII_CLKRANGE_150_250M | MII_BUSY, &mac_p->miiaddr);
+
+	do {
+		if (!(readl(&mac_p->miiaddr) & MII_BUSY)) {
+			*val = readl(&mac_p->miidata);
+			return 0;
+		}
+		udelay(1000);
+	} while (timeout--);
+
+	return -1;
+}
+
+static int eth_mdio_write(struct eth_device *dev, u8 addr, u8 reg, u16 val)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	struct eth_mac_regs *mac_p = priv->mac_regs_p;
+	u32 miiaddr;
+	int ret = -1, timeout = CONFIG_MDIO_TIMEOUT;
+	u16 value;
+
+	writel(val, &mac_p->miidata);
+	miiaddr = ((addr << MIIADDRSHIFT) & MII_ADDRMSK) | \
+		  ((reg << MIIREGSHIFT) & MII_REGMSK) | MII_WRITE;
+
+	writel(miiaddr | MII_CLKRANGE_150_250M | MII_BUSY, &mac_p->miiaddr);
+
+	do {
+		if (!(readl(&mac_p->miiaddr) & MII_BUSY))
+			ret = 0;
+		udelay(1000);
+	} while (timeout--);
+
+	/* Needed as a fix for ST-Phy */
+	eth_mdio_read(dev, addr, reg, &value);
+
+	return ret;
+}
+
+#if defined(CONFIG_DW_SEARCH_PHY)
+static int find_phy(struct eth_device *dev)
+{
+	int phy_addr = 0;
+	u16 ctrl, oldctrl;
+
+	do {
+		eth_mdio_read(dev, phy_addr, PHY_BMCR, &ctrl);
+		oldctrl = ctrl & PHY_BMCR_AUTON;
+
+		ctrl ^= PHY_BMCR_AUTON;
+		eth_mdio_write(dev, phy_addr, PHY_BMCR, ctrl);
+		eth_mdio_read(dev, phy_addr, PHY_BMCR, &ctrl);
+		ctrl &= PHY_BMCR_AUTON;
+
+		if (ctrl == oldctrl) {
+			phy_addr++;
+		} else {
+			ctrl ^= PHY_BMCR_AUTON;
+			eth_mdio_write(dev, phy_addr, PHY_BMCR, ctrl);
+
+			return phy_addr;
+		}
+	} while (phy_addr < 32);
+
+	return -1;
+}
+#endif
+
+static int dw_reset_phy(struct eth_device *dev)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	u16 ctrl;
+	int timeout = CONFIG_PHYRESET_TIMEOUT;
+	u32 phy_addr = priv->address;
+
+	eth_mdio_write(dev, phy_addr, PHY_BMCR, PHY_BMCR_RESET);
+	do {
+		eth_mdio_read(dev, phy_addr, PHY_BMCR, &ctrl);
+		if (!(ctrl & PHY_BMCR_RESET))
+			break;
+		udelay(1000);
+	} while (timeout--);
+
+	if (timeout < 0)
+		return -1;
+
+#ifdef CONFIG_PHY_RESET_DELAY
+	udelay(CONFIG_PHY_RESET_DELAY);
+#endif
+	return 0;
+}
+
+static int configure_phy(struct eth_device *dev)
+{
+	struct dw_eth_dev *priv = dev->priv;
+	int phy_addr;
+	u16 bmcr, ctrl;
+#if defined(CONFIG_DW_AUTONEG)
+	u16 bmsr;
+	u32 timeout;
+	u16 anlpar, btsr;
+#endif
+
+#if defined(CONFIG_DW_SEARCH_PHY)
+	phy_addr = find_phy(dev);
+	if (phy_addr > 0)
+		priv->address = phy_addr;
+	else
+		return -1;
+#endif
+	if (dw_reset_phy(dev) < 0)
+		return -1;
+
+#if defined(CONFIG_DW_AUTONEG)
+	bmcr = PHY_BMCR_AUTON | PHY_BMCR_RST_NEG | PHY_BMCR_100MB | \
+	       PHY_BMCR_DPLX | PHY_BMCR_1000_MBPS;
+#else
+	bmcr = PHY_BMCR_100MB | PHY_BMCR_DPLX;
+
+#if defined(CONFIG_DW_SPEED10M)
+	bmcr &= ~PHY_BMCR_100MB;
+#endif
+#if defined(CONFIG_DW_DUPLEXHALF)
+	bmcr &= ~PHY_BMCR_DPLX;
+#endif
+#endif
+	if (eth_mdio_write(dev, phy_addr, PHY_BMCR, bmcr) < 0)
+		return -1;
+
+	/* Read the phy status register and populate priv structure */
+#if defined(CONFIG_DW_AUTONEG)
+	timeout = CONFIG_AUTONEG_TIMEOUT;
+	do {
+		eth_mdio_read(dev, phy_addr, PHY_BMSR, &bmsr);
+		if (bmsr & PHY_BMSR_AUTN_COMP)
+			break;
+		udelay(1000);
+	} while (timeout--);
+
+	eth_mdio_read(dev, phy_addr, PHY_ANLPAR, &anlpar);
+	eth_mdio_read(dev, phy_addr, PHY_1000BTSR, &btsr);
+
+	if (btsr & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)) {
+		priv->speed = SPEED_1000M;
+		if (btsr & PHY_1000BTSR_1000FD)
+			priv->duplex = FULL_DUPLEX;
+		else
+			priv->duplex = HALF_DUPLEX;
+	} else {
+		if (anlpar & PHY_ANLPAR_100)
+			priv->speed = SPEED_100M;
+		else
+			priv->speed = SPEED_10M;
+
+		if (anlpar & (PHY_ANLPAR_10FD | PHY_ANLPAR_TXFD))
+			priv->duplex = FULL_DUPLEX;
+		else
+			priv->duplex = HALF_DUPLEX;
+	}
+#else
+	if (eth_mdio_read(dev, phy_addr, PHY_BMCR, &ctrl) < 0)
+		return -1;
+
+	if (ctrl & PHY_BMCR_DPLX)
+		priv->duplex = FULL_DUPLEX;
+	else
+		priv->duplex = HALF_DUPLEX;
+
+	if (ctrl & PHY_BMCR_1000_MBPS)
+		priv->speed = SPEED_1000M;
+	else if (ctrl & PHY_BMCR_100_MBPS)
+		priv->speed = SPEED_100M;
+	else
+		priv->speed = SPEED_10M;
+#endif
+	return 0;
+}
+
+#if defined(CONFIG_MII)
+static int dw_mii_read(char *devname, u8 addr, u8 reg, u16 *val)
+{
+	struct eth_device *dev;
+
+	dev = eth_get_dev_by_name(devname);
+	if (dev)
+		eth_mdio_read(dev, addr, reg, val);
+
+	return 0;
+}
+
+static int dw_mii_write(char *devname, u8 addr, u8 reg, u16 val)
+{
+	struct eth_device *dev;
+
+	dev = eth_get_dev_by_name(devname);
+	if (dev)
+		eth_mdio_write(dev, addr, reg, val);
+
+	return 0;
+}
+#endif
+
+int designware_initialize(u32 id, ulong base_addr, u32 phy_addr)
+{
+	struct eth_device *dev;
+	struct dw_eth_dev *priv;
+
+	dev = (struct eth_device *) malloc(sizeof(struct eth_device));
+	if (!dev)
+		return -ENOMEM;
+
+	/*
+	 * Since the priv structure contains the descriptors which need a strict
+	 * buswidth alignment, memalign is used to allocate memory
+	 */
+	priv = (struct dw_eth_dev *) memalign(16, sizeof(struct dw_eth_dev));
+	if (!priv) {
+		free(dev);
+		return -ENOMEM;
+	}
+
+	memset(dev, 0, sizeof(struct eth_device));
+	memset(priv, 0, sizeof(struct dw_eth_dev));
+
+	sprintf(dev->name, "mii%d", id);
+	dev->iobase = (int)base_addr;
+	dev->priv = priv;
+
+	eth_getenv_enetaddr_by_index(id, &dev->enetaddr[0]);
+
+	priv->dev = dev;
+	priv->mac_regs_p = (struct eth_mac_regs *)base_addr;
+	priv->dma_regs_p = (struct eth_dma_regs *)(base_addr +
+			DW_DMA_BASE_OFFSET);
+	priv->address = phy_addr;
+
+	if (mac_reset(dev) < 0)
+		return -1;
+
+	if (configure_phy(dev) < 0) {
+		printf("Phy could not be configured\n");
+		return -1;
+	}
+
+	dev->init = dw_eth_init;
+	dev->send = dw_eth_send;
+	dev->recv = dw_eth_recv;
+	dev->halt = dw_eth_halt;
+	dev->write_hwaddr = dw_write_hwaddr;
+
+	eth_register(dev);
+
+#if defined(CONFIG_MII)
+	miiphy_register(dev->name, dw_mii_read, dw_mii_write);
+#endif
+	return 1;
+}
diff --git a/drivers/net/designware.h b/drivers/net/designware.h
new file mode 100644
index 0000000..e5828a6
--- /dev/null
+++ b/drivers/net/designware.h
@@ -0,0 +1,264 @@
+/*
+ * (C) Copyright 2010
+ * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.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
+ */
+
+#ifndef _DW_ETH_H
+#define _DW_ETH_H
+
+#define CONFIG_TX_DESCR_NUM	16
+#define CONFIG_RX_DESCR_NUM	16
+#define CONFIG_ETH_BUFSIZE	2048
+#define TX_TOTAL_BUFSIZE	(CONFIG_ETH_BUFSIZE * CONFIG_TX_DESCR_NUM)
+#define RX_TOTAL_BUFSIZE	(CONFIG_ETH_BUFSIZE * CONFIG_RX_DESCR_NUM)
+
+#define CONFIG_MACRESET_TIMEOUT	(3 * CONFIG_SYS_HZ)
+#define CONFIG_MDIO_TIMEOUT	(3 * CONFIG_SYS_HZ)
+#define CONFIG_PHYRESET_TIMEOUT	(3 * CONFIG_SYS_HZ)
+#define CONFIG_AUTONEG_TIMEOUT	(5 * CONFIG_SYS_HZ)
+
+struct eth_mac_regs {
+	u32 conf;		/* 0x00 */
+	u32 framefilt;		/* 0x04 */
+	u32 hashtablehigh;	/* 0x08 */
+	u32 hashtablelow;	/* 0x0c */
+	u32 miiaddr;		/* 0x10 */
+	u32 miidata;		/* 0x14 */
+	u32 flowcontrol;	/* 0x18 */
+	u32 vlantag;		/* 0x1c */
+	u32 version;		/* 0x20 */
+	u8 reserved_1[20];
+	u32 intreg;		/* 0x38 */
+	u32 intmask;		/* 0x3c */
+	u32 macaddr0hi;		/* 0x40 */
+	u32 macaddr0lo;		/* 0x44 */
+};
+
+/* MAC configuration register definitions */
+#define FRAMEBURSTENABLE	(1 << 21)
+#define MII_PORTSELECT		(1 << 15)
+#define FES_100			(1 << 14)
+#define DISABLERXOWN		(1 << 13)
+#define FULLDPLXMODE		(1 << 11)
+#define RXENABLE		(1 << 2)
+#define TXENABLE		(1 << 3)
+
+/* MII address register definitions */
+#define MII_BUSY		(1 << 0)
+#define MII_WRITE		(1 << 1)
+#define MII_CLKRANGE_60_100M	(0)
+#define MII_CLKRANGE_100_150M	(0x4)
+#define MII_CLKRANGE_20_35M	(0x8)
+#define MII_CLKRANGE_35_60M	(0xC)
+#define MII_CLKRANGE_150_250M	(0x10)
+#define MII_CLKRANGE_250_300M	(0x14)
+
+#define MIIADDRSHIFT		(11)
+#define MIIREGSHIFT		(6)
+#define MII_REGMSK		(0x1F << 6)
+#define MII_ADDRMSK		(0x1F << 11)
+
+
+struct eth_dma_regs {
+	u32 busmode;		/* 0x00 */
+	u32 txpolldemand;	/* 0x04 */
+	u32 rxpolldemand;	/* 0x08 */
+	u32 rxdesclistaddr;	/* 0x0c */
+	u32 txdesclistaddr;	/* 0x10 */
+	u32 status;		/* 0x14 */
+	u32 opmode;		/* 0x18 */
+	u32 intenable;		/* 0x1c */
+	u8 reserved[40];
+	u32 currhosttxdesc;	/* 0x48 */
+	u32 currhostrxdesc;	/* 0x4c */
+	u32 currhosttxbuffaddr;	/* 0x50 */
+	u32 currhostrxbuffaddr;	/* 0x54 */
+};
+
+#define DW_DMA_BASE_OFFSET	(0x1000)
+
+/* Bus mode register definitions */
+#define FIXEDBURST		(1 << 16)
+#define PRIORXTX_41		(3 << 14)
+#define PRIORXTX_31		(2 << 14)
+#define PRIORXTX_21		(1 << 14)
+#define PRIORXTX_11		(0 << 14)
+#define BURST_1			(1 << 8)
+#define BURST_2			(2 << 8)
+#define BURST_4			(4 << 8)
+#define BURST_8			(8 << 8)
+#define BURST_16		(16 << 8)
+#define BURST_32		(32 << 8)
+#define RXHIGHPRIO		(1 << 1)
+#define DMAMAC_SRST		(1 << 0)
+
+/* Poll demand definitions */
+#define POLL_DATA		(0xFFFFFFFF)
+
+/* Operation mode definitions */
+#define STOREFORWARD		(1 << 21)
+#define FLUSHTXFIFO		(1 << 20)
+#define TXSTART			(1 << 13)
+#define TXSECONDFRAME		(1 << 2)
+#define RXSTART			(1 << 1)
+
+/* Descriptior related definitions */
+#define MAC_MAX_FRAME_SZ	(2048)
+
+struct dmamacdescr {
+	u32 txrx_status;
+	u32 dmamac_cntl;
+	void *dmamac_addr;
+	struct dmamacdescr *dmamac_next;
+};
+
+/*
+ * txrx_status definitions
+ */
+
+/* tx status bits definitions */
+#if defined(CONFIG_DW_ALTDESCRIPTOR)
+
+#define DESC_TXSTS_OWNBYDMA		(1 << 31)
+#define DESC_TXSTS_TXINT		(1 << 30)
+#define DESC_TXSTS_TXLAST		(1 << 29)
+#define DESC_TXSTS_TXFIRST		(1 << 28)
+#define DESC_TXSTS_TXCRCDIS		(1 << 27)
+
+#define DESC_TXSTS_TXPADDIS		(1 << 26)
+#define DESC_TXSTS_TXCHECKINSCTRL	(3 << 22)
+#define DESC_TXSTS_TXRINGEND		(1 << 21)
+#define DESC_TXSTS_TXCHAIN		(1 << 20)
+#define DESC_TXSTS_MSK			(0x1FFFF << 0)
+
+#else
+
+#define DESC_TXSTS_OWNBYDMA		(1 << 31)
+#define DESC_TXSTS_MSK			(0x1FFFF << 0)
+
+#endif
+
+/* rx status bits definitions */
+#define DESC_RXSTS_OWNBYDMA		(1 << 31)
+#define DESC_RXSTS_DAFILTERFAIL		(1 << 30)
+#define DESC_RXSTS_FRMLENMSK		(0x3FFF << 16)
+#define DESC_RXSTS_FRMLENSHFT		(16)
+
+#define DESC_RXSTS_ERROR		(1 << 15)
+#define DESC_RXSTS_RXTRUNCATED		(1 << 14)
+#define DESC_RXSTS_SAFILTERFAIL		(1 << 13)
+#define DESC_RXSTS_RXIPC_GIANTFRAME	(1 << 12)
+#define DESC_RXSTS_RXDAMAGED		(1 << 11)
+#define DESC_RXSTS_RXVLANTAG		(1 << 10)
+#define DESC_RXSTS_RXFIRST		(1 << 9)
+#define DESC_RXSTS_RXLAST		(1 << 8)
+#define DESC_RXSTS_RXIPC_GIANT		(1 << 7)
+#define DESC_RXSTS_RXCOLLISION		(1 << 6)
+#define DESC_RXSTS_RXFRAMEETHER		(1 << 5)
+#define DESC_RXSTS_RXWATCHDOG		(1 << 4)
+#define DESC_RXSTS_RXMIIERROR		(1 << 3)
+#define DESC_RXSTS_RXDRIBBLING		(1 << 2)
+#define DESC_RXSTS_RXCRC		(1 << 1)
+
+/*
+ * dmamac_cntl definitions
+ */
+
+/* tx control bits definitions */
+#if defined(CONFIG_DW_ALTDESCRIPTOR)
+
+#define DESC_TXCTRL_SIZE1MASK		(0x1FFF << 0)
+#define DESC_TXCTRL_SIZE1SHFT		(0)
+#define DESC_TXCTRL_SIZE2MASK		(0x1FFF << 16)
+#define DESC_TXCTRL_SIZE2SHFT		(16)
+
+#else
+
+#define DESC_TXCTRL_TXINT		(1 << 31)
+#define DESC_TXCTRL_TXLAST		(1 << 30)
+#define DESC_TXCTRL_TXFIRST		(1 << 29)
+#define DESC_TXCTRL_TXCHECKINSCTRL	(3 << 27)
+#define DESC_TXCTRL_TXCRCDIS		(1 << 26)
+#define DESC_TXCTRL_TXRINGEND		(1 << 25)
+#define DESC_TXCTRL_TXCHAIN		(1 << 24)
+
+#define DESC_TXCTRL_SIZE1MASK		(0x7FF << 0)
+#define DESC_TXCTRL_SIZE1SHFT		(0)
+#define DESC_TXCTRL_SIZE2MASK		(0x7FF << 11)
+#define DESC_TXCTRL_SIZE2SHFT		(11)
+
+#endif
+
+/* rx control bits definitions */
+#if defined(CONFIG_DW_ALTDESCRIPTOR)
+
+#define DESC_RXCTRL_RXINTDIS		(1 << 31)
+#define DESC_RXCTRL_RXRINGEND		(1 << 15)
+#define DESC_RXCTRL_RXCHAIN		(1 << 14)
+
+#define DESC_RXCTRL_SIZE1MASK		(0x1FFF << 0)
+#define DESC_RXCTRL_SIZE1SHFT		(0)
+#define DESC_RXCTRL_SIZE2MASK		(0x1FFF << 16)
+#define DESC_RXCTRL_SIZE2SHFT		(16)
+
+#else
+
+#define DESC_RXCTRL_RXINTDIS		(1 << 31)
+#define DESC_RXCTRL_RXRINGEND		(1 << 25)
+#define DESC_RXCTRL_RXCHAIN		(1 << 24)
+
+#define DESC_RXCTRL_SIZE1MASK		(0x7FF << 0)
+#define DESC_RXCTRL_SIZE1SHFT		(0)
+#define DESC_RXCTRL_SIZE2MASK		(0x7FF << 11)
+#define DESC_RXCTRL_SIZE2SHFT		(11)
+
+#endif
+
+struct dw_eth_dev {
+	u32 address;
+	u32 speed;
+	u32 duplex;
+	u32 tx_currdescnum;
+	u32 rx_currdescnum;
+	u32 padding;
+
+	struct dmamacdescr tx_mac_descrtable[CONFIG_TX_DESCR_NUM];
+	struct dmamacdescr rx_mac_descrtable[CONFIG_RX_DESCR_NUM];
+
+	char txbuffs[TX_TOTAL_BUFSIZE];
+	char rxbuffs[RX_TOTAL_BUFSIZE];
+
+	struct eth_mac_regs *mac_regs_p;
+	struct eth_dma_regs *dma_regs_p;
+
+	struct eth_device *dev;
+} __attribute__ ((aligned(8)));
+
+/* Speed specific definitions */
+#define SPEED_10M		1
+#define SPEED_100M		2
+#define SPEED_1000M		3
+
+/* Duplex mode specific definitions */
+#define HALF_DUPLEX		1
+#define FULL_DUPLEX		2
+
+#endif
diff --git a/include/netdev.h b/include/netdev.h
index 882642a..3abc944 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -49,6 +49,7 @@ int bfin_EMAC_initialize(bd_t *bis);
 int cs8900_initialize(u8 dev_num, int base_addr);
 int dc21x4x_initialize(bd_t *bis);
 int davinci_emac_initialize(void);
+int designware_initialize(u32 id, ulong base_addr, u32 phy_addr);
 int dnet_eth_initialize(int id, void *regs, unsigned int phy_addr);
 int e1000_initialize(bd_t *bis);
 int eepro100_initialize(bd_t *bis);