Patchwork [U-Boot,v2] ftgmac100: support of gigabit eth ftgmac100

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Submitter Macpaul Lin
Date Dec. 15, 2010, 3:31 a.m.
Message ID <1292383883-24272-1-git-send-email-macpaul@andestech.com>
Download mbox | patch
Permalink /patch/75604/
State Superseded
Headers show

Comments

Macpaul Lin - Dec. 15, 2010, 3:31 a.m.
Add Faraday's ftgmac100 (gigabit ethernet)
MAC controller's driver.

Signed-off-by: Macpaul Lin <macpaul@andestech.com>
---
Changes for v2:
   - Coding Style cleanup
   - Makefile Order sorted
   - Volatile statement eliminated
   - Error handling added
   - Autonegotiation timeout value rechecked
   - Link speed detection code is reduced
   - Logic of autonegotiation and Link speed update reorganized
   - Redundent registers offset table cleared
   - The explaination of sub configuration of this
     driver has moved into README

 README                  |   12 +
 drivers/net/Makefile    |    1 +
 drivers/net/ftgmac100.c |  576 +++++++++++++++++++++++++++++++++++++++++++++++
 drivers/net/ftgmac100.h |  255 +++++++++++++++++++++
 include/netdev.h        |    1 +
 5 files changed, 845 insertions(+), 0 deletions(-)
 create mode 100644 drivers/net/ftgmac100.c
 create mode 100644 drivers/net/ftgmac100.h
Wolfgang Denk - Dec. 18, 2010, 11:07 p.m.
Dear Macpaul Lin,

In message <1292383883-24272-1-git-send-email-macpaul@andestech.com> you wrote:
> Add Faraday's ftgmac100 (gigabit ethernet)
> MAC controller's driver.
> 
> Signed-off-by: Macpaul Lin <macpaul@andestech.com>
...
> --- /dev/null
> +++ b/drivers/net/ftgmac100.c
...
> +};
> +
> +

Only one blank line, please.

> +/******************************************************************************
> + * struct mii_bus functions
> + *****************************************************************************/

Incorrect multi-line comment style.  Please fix globally.

> +int ftgmac100_phy_read(struct eth_device *dev, int addr,
> +		int reg, u16 *value)
> +{
> +	*value = ftgmac100_mdiobus_read(dev , addr, reg);
> +
> +	if (*value == -1)
> +		return -1;
> +	else
> +		return 0;
> +}

Drop the else and unindent the return 0;

> +int  ftgmac100_phy_write(struct eth_device *dev, int addr,
> +		int reg, u16 value)
> +{
> +	if (ftgmac100_mdiobus_write(dev, addr, reg, value) == -1)
> +		return -1;
> +	else
> +		return 0;
> +}

Ditto.  Please fix globally.

> +	ftgmac100_phy_write(dev, priv->phy_addr,
> +		MII_ADVERTISE, adv);

Make this a single line, please. [Same globally where applicable]

> +	if (!(status & BMSR_LSTATUS)) {
> +		printf("%s: link down\n", dev->name);
> +		return 0;
> +	} else {

Remove else and unindent the rest.


> +#ifdef CONFIG_FTGMAC100_EGIGA
> +	if (stat_ge & LPA_1000FULL)
> +		/* set gmac for 1000BaseTX and Full Duplex */
> +		maccr |= FTGMAC100_MACCR_GIGA_MODE | FTGMAC100_MACCR_FULLDUP;
> +
> +	if (stat_ge & LPA_1000HALF)
> +		/* set gmac for 1000BaseTX and Half Duplex */
> +		maccr |= FTGMAC100_MACCR_GIGA_MODE;

Braces needed for multi-line statements.  Please fix globally.


Best regards,

Wolfgang Denk

Patch

diff --git a/README b/README
index 68f5fb0..d7a23cd 100644
--- a/README
+++ b/README
@@ -861,6 +861,18 @@  The following options need to be configured:
 			Define this to use i/o functions instead of macros
 			(some hardware wont work with macros)
 
+		CONFIG_FTGMAC100
+		Support for Faraday's FTGMAC100 Gigabit SoC Ethernet
+
+			CONFIG_FTGMAC100_EGIGA
+			Define this to use GE link update with gigabit PHY.
+			Define this if FTGMAC100 is connected to gigabit PHY.
+			If your system has 10/100 PHY only, it might not occur
+			wrong behavior. Because PHY usually return timeout or
+			useless data when polling gigabit status and gigabit
+			control registers. This behavior won't affect the
+			correctnessof 10/100 link speed update.
+
 		CONFIG_SMC911X
 		Support for SMSC's LAN911x and LAN921x chips
 
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index b605eea..fd9d0b4 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -47,6 +47,7 @@  COBJS-$(CONFIG_EP93XX) += ep93xx_eth.o
 COBJS-$(CONFIG_ETHOC) += ethoc.o
 COBJS-$(CONFIG_FEC_MXC) += fec_mxc.o
 COBJS-$(CONFIG_FSLDMAFEC) += fsl_mcdmafec.o mcfmii.o
+COBJS-$(CONFIG_FTGMAC100) += ftgmac100.o
 COBJS-$(CONFIG_FTMAC100) += ftmac100.o
 COBJS-$(CONFIG_GRETH) += greth.o
 COBJS-$(CONFIG_INCA_IP_SWITCH) += inca-ip_sw.o
diff --git a/drivers/net/ftgmac100.c b/drivers/net/ftgmac100.c
new file mode 100644
index 0000000..336e1b8
--- /dev/null
+++ b/drivers/net/ftgmac100.c
@@ -0,0 +1,576 @@ 
+/*
+ * Faraday FTGMAC100 Ethernet
+ *
+ * (C) Copyright 2009 Faraday Technology
+ * Po-Yu Chuang <ratbert@faraday-tech.com>
+ *
+ * (C) Copyright 2010 Andes Technology
+ * Macpaul Lin <macpaul@andestech.com>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <config.h>
+#include <common.h>
+#include <malloc.h>
+#include <net.h>
+#include <asm/io.h>
+#include <linux/mii.h>
+
+#include "ftgmac100.h"
+
+#define ETH_ZLEN	60
+
+#define mdelay(n) ({unsigned long msec = (n); while (msec--) udelay(1000); })
+
+/* RBSR - hw default init value is also 0x640 */
+#define RBSR_DEFAULT_VALUE	0x640
+
+/* PKTBUFSTX/PKTBUFSRX must both be power of 2 */
+#define PKTBUFSTX	4	/* must be power of 2 */
+
+struct ftgmac100_data {
+	struct ftgmac100_txdes txdes[PKTBUFSTX];
+	struct ftgmac100_rxdes rxdes[PKTBUFSRX];
+	int tx_index;
+	int rx_index;
+	int phy_addr;
+};
+
+
+/******************************************************************************
+ * struct mii_bus functions
+ *****************************************************************************/
+static int ftgmac100_mdiobus_read(struct eth_device *dev, int phy_addr,
+	int regnum)
+{
+	struct ftgmac100 *ftgmac100 = (struct ftgmac100 *)dev->iobase;
+	int phycr;
+	int i;
+
+	phycr = readl(&ftgmac100->phycr);
+
+	/* preserve MDC cycle threshold */
+	phycr &= FTGMAC100_PHYCR_MDC_CYCTHR_MASK;
+
+	phycr |= FTGMAC100_PHYCR_PHYAD(phy_addr)
+	      |  FTGMAC100_PHYCR_REGAD(regnum)
+	      |  FTGMAC100_PHYCR_MIIRD;
+
+	writel(phycr, &ftgmac100->phycr);
+
+	for (i = 0; i < 10; i++) {
+		phycr = readl(&ftgmac100->phycr);
+
+		if ((phycr & FTGMAC100_PHYCR_MIIRD) == 0) {
+			int data;
+
+			data = readl(&ftgmac100->phydata);
+			return FTGMAC100_PHYDATA_MIIRDATA(data);
+		}
+
+		mdelay(10);
+	}
+
+	debug("mdio read timed out\n");
+	return -1;
+}
+
+static int ftgmac100_mdiobus_write(struct eth_device *dev, int phy_addr,
+	int regnum, u16 value)
+{
+	struct ftgmac100 *ftgmac100 = (struct ftgmac100 *)dev->iobase;
+	int phycr;
+	int data;
+	int i;
+
+	phycr = readl(&ftgmac100->phycr);
+
+	/* preserve MDC cycle threshold */
+	phycr &= FTGMAC100_PHYCR_MDC_CYCTHR_MASK;
+
+	phycr |= FTGMAC100_PHYCR_PHYAD(phy_addr)
+	      |  FTGMAC100_PHYCR_REGAD(regnum)
+	      |  FTGMAC100_PHYCR_MIIWR;
+
+	data = FTGMAC100_PHYDATA_MIIWDATA(value);
+
+	writel(data, &ftgmac100->phydata);
+	writel(phycr, &ftgmac100->phycr);
+
+	for (i = 0; i < 10; i++) {
+		phycr = readl(&ftgmac100->phycr);
+
+		if ((phycr & FTGMAC100_PHYCR_MIIWR) == 0) {
+			debug("(phycr & FTGMAC100_PHYCR_MIIWR) == 0: " \
+				"phy_addr: %x\n", phy_addr);
+			return 0;
+		}
+
+		mdelay(1);
+	}
+
+	debug("mdio write timed out\n");
+	return -1;
+}
+
+int ftgmac100_phy_read(struct eth_device *dev, int addr,
+		int reg, u16 *value)
+{
+	*value = ftgmac100_mdiobus_read(dev , addr, reg);
+
+	if (*value == -1)
+		return -1;
+	else
+		return 0;
+}
+
+int  ftgmac100_phy_write(struct eth_device *dev, int addr,
+		int reg, u16 value)
+{
+	if (ftgmac100_mdiobus_write(dev, addr, reg, value) == -1)
+		return -1;
+	else
+		return 0;
+}
+
+static int ftgmac100_phy_reset(struct eth_device *dev)
+{
+	struct ftgmac100_data *priv = dev->priv;
+	int i;
+	u16 status, adv;
+
+	adv = ADVERTISE_CSMA | ADVERTISE_ALL;
+
+	ftgmac100_phy_write(dev, priv->phy_addr,
+		MII_ADVERTISE, adv);
+	printf("%s: Starting autonegotiation...\n", dev->name);
+
+	ftgmac100_phy_write(dev, priv->phy_addr,
+		MII_BMCR, (BMCR_ANENABLE | BMCR_ANRESTART));
+
+	for (i = 0; i < 100000 / 100; i++) {
+		ftgmac100_phy_read(dev, priv->phy_addr,
+			MII_BMSR, &status);
+		if (status & BMSR_ANEGCOMPLETE)
+			break;
+		mdelay(1);
+	}
+
+	if (status & BMSR_ANEGCOMPLETE) {
+		printf("%s: Autonegotiation complete\n", dev->name);
+	} else {
+		printf("%s: Autonegotiation timed out (status=0x%04x)\n",
+		       dev->name, status);
+		return 0;
+	}
+
+	return 1;
+}
+
+static int ftgmac100_phy_init(struct eth_device *dev)
+{
+	struct ftgmac100_data *priv = dev->priv;
+
+	int phy_addr;
+	u16 phy_id, status, adv, lpa, stat_ge;
+	int media, speed, duplex;
+	int i;
+
+	/* Check if the PHY is up to snuff... */
+	for (phy_addr = 0; phy_addr < CONFIG_PHY_MAX_ADDR; phy_addr++) {
+		ftgmac100_phy_read(dev, phy_addr,
+			MII_PHYSID1, &phy_id);
+
+		/*
+		 * When it is unable to found PHY,
+		 * the interface usually return 0xffff or 0x0000
+		 */
+		if (phy_id != 0xffff && phy_id != 0x0) {
+			printf("%s: found PHY at 0x%02x\n",
+				dev->name, phy_addr);
+			priv->phy_addr = phy_addr;
+			break;
+		}
+	}
+
+	if (phy_id == 0xffff || phy_id == 0x0) {
+		printf("%s: no PHY present\n", dev->name);
+		return 0;
+	}
+
+	ftgmac100_phy_read(dev, priv->phy_addr,
+		MII_BMSR, &status);
+
+	if (!(status & BMSR_LSTATUS)) {
+		/* Try to re-negotiate if we don't have link already. */
+		ftgmac100_phy_reset(dev);
+
+		for (i = 0; i < 100000 / 100; i++) {
+			ftgmac100_phy_read(dev, priv->phy_addr,
+				MII_BMSR, &status);
+			if (status & BMSR_LSTATUS)
+				break;
+			udelay(100);
+		}
+	}
+
+	if (!(status & BMSR_LSTATUS)) {
+		printf("%s: link down\n", dev->name);
+		return 0;
+	} else {
+
+#ifdef CONFIG_FTGMAC100_EGIGA
+		/* 1000 Base-T Status Register */
+		ftgmac100_phy_read(dev, priv->phy_addr,
+			MII_STAT1000, &stat_ge);
+
+		speed = (stat_ge & (LPA_1000FULL | LPA_1000HALF)
+			 ? 1 : 0);
+
+		duplex = ((stat_ge & LPA_1000FULL)
+			 ? 1 : 0);
+
+		if (speed) { /* Speed is 1000 */
+			printf("%s: link up, 1000bps %s-duplex\n",
+				dev->name,
+				duplex ? "full" : "half");
+			return 0;
+		}
+#endif
+
+		ftgmac100_phy_read(dev, priv->phy_addr,
+			MII_ADVERTISE, &adv);
+		ftgmac100_phy_read(dev, priv->phy_addr,
+			MII_LPA, &lpa);
+		media = mii_nway_result(lpa & adv);
+		speed = (media & (ADVERTISE_100FULL | ADVERTISE_100HALF)
+			 ? 1 : 0);
+		duplex = (media & ADVERTISE_FULL) ? 1 : 0;
+		printf("%s: link up, %sMbps %s-duplex\n",
+		       dev->name,
+		       speed ? "100" : "10",
+		       duplex ? "full" : "half");
+
+		return 1;
+	}
+}
+
+static int ftgmac100_update_link_speed(struct eth_device *dev)
+{
+	struct ftgmac100 *ftgmac100 = (struct ftgmac100 *)dev->iobase;
+	struct ftgmac100_data *priv = dev->priv;
+
+	unsigned short stat_fe;
+	unsigned short stat_ge;
+	unsigned int maccr;
+
+#ifdef CONFIG_FTGMAC100_EGIGA
+	/* 1000 Base-T Status Register */
+	ftgmac100_phy_read(dev, priv->phy_addr,
+		MII_STAT1000, &stat_ge);
+#endif
+
+	ftgmac100_phy_read(dev, priv->phy_addr,
+		MII_BMSR, &stat_fe);
+
+	if (!(stat_fe & BMSR_LSTATUS))	/* link status up? */
+		return 0;
+
+	/* read MAC control register and clear related bits */
+	maccr = readl(&ftgmac100->maccr) &
+		~(FTGMAC100_MACCR_GIGA_MODE |
+		  FTGMAC100_MACCR_FAST_MODE |
+		  FTGMAC100_MACCR_FULLDUP);
+
+#ifdef CONFIG_FTGMAC100_EGIGA
+	if (stat_ge & LPA_1000FULL)
+		/* set gmac for 1000BaseTX and Full Duplex */
+		maccr |= FTGMAC100_MACCR_GIGA_MODE | FTGMAC100_MACCR_FULLDUP;
+
+	if (stat_ge & LPA_1000HALF)
+		/* set gmac for 1000BaseTX and Half Duplex */
+		maccr |= FTGMAC100_MACCR_GIGA_MODE;
+#endif
+
+	if (stat_fe & BMSR_100FULL)
+		/* set MII for 100BaseTX and Full Duplex */
+		maccr |= FTGMAC100_MACCR_FAST_MODE | FTGMAC100_MACCR_FULLDUP;
+
+	if (stat_fe & BMSR_10FULL)
+		/* set MII for 10BaseT and Full Duplex */
+		maccr |= FTGMAC100_MACCR_FULLDUP;
+
+	if (stat_fe & BMSR_100HALF)
+		/* set MII for 100BaseTX and Half Duplex */
+		maccr |= FTGMAC100_MACCR_FAST_MODE;
+
+	if (stat_fe & BMSR_10HALF)
+		/* set MII for 10BaseT and Half Duplex */
+		/* we have already clear these bits, do nothing */
+		;
+
+	/* update MII config into maccr */
+	writel(maccr, &ftgmac100->maccr);
+
+	return 1;
+}
+
+/*
+ * Reset MAC
+ */
+static void ftgmac100_reset(struct eth_device *dev)
+{
+	struct ftgmac100 *ftgmac100 = (struct ftgmac100 *)dev->iobase;
+
+	debug("%s()\n", __func__);
+
+	writel(FTGMAC100_MACCR_SW_RST, &ftgmac100->maccr);
+
+	while (readl(&ftgmac100->maccr) & FTGMAC100_MACCR_SW_RST)
+		;
+}
+
+/*
+ * Set MAC address
+ */
+static void ftgmac100_set_mac(struct eth_device *dev,
+	const unsigned char *mac)
+{
+	struct ftgmac100 *ftgmac100 = (struct ftgmac100 *)dev->iobase;
+	unsigned int maddr = mac[0] << 8 | mac[1];
+	unsigned int laddr = mac[2] << 24 | mac[3]
+				<< 16 | mac[4] << 8 | mac[5];
+
+	debug("%s(%x %x)\n", __func__, maddr, laddr);
+
+	writel(maddr, &ftgmac100->mac_madr);
+	writel(laddr, &ftgmac100->mac_ladr);
+}
+
+static void ftgmac100_set_mac_from_env(struct eth_device *dev)
+{
+	eth_getenv_enetaddr("ethaddr", dev->enetaddr);
+
+	ftgmac100_set_mac(dev, dev->enetaddr);
+}
+
+/*
+ * disable transmitter, receiver
+ */
+static void ftgmac100_halt(struct eth_device *dev)
+{
+	struct ftgmac100 *ftgmac100 = (struct ftgmac100 *)dev->iobase;
+
+	debug("%s()\n", __func__);
+
+	writel(0, &ftgmac100->maccr);
+}
+
+static int ftgmac100_init(struct eth_device *dev, bd_t *bd)
+{
+	struct ftgmac100 *ftgmac100 = (struct ftgmac100 *)dev->iobase;
+	struct ftgmac100_data *priv = dev->priv;
+	struct ftgmac100_txdes *txdes = priv->txdes;
+	struct ftgmac100_rxdes *rxdes = priv->rxdes;
+	unsigned int maccr;
+	int i;
+
+	debug("%s()\n", __func__);
+
+	ftgmac100_reset(dev);
+
+	/* set the ethernet address */
+	ftgmac100_set_mac_from_env(dev);
+
+	/* disable all interrupts */
+	writel(0, &ftgmac100->ier);
+
+	/* initialize descriptors */
+	priv->tx_index = 0;
+	priv->rx_index = 0;
+
+	txdes[PKTBUFSTX - 1].txdes0	= FTGMAC100_TXDES0_EDOTR;
+	rxdes[PKTBUFSRX - 1].rxdes0	= FTGMAC100_RXDES0_EDORR;
+
+	for (i = 0; i < PKTBUFSTX; i++) {
+		/* TXBUF_BADR */
+		txdes[i].txdes3 = 0;
+		txdes[i].txdes1 = 0;
+	}
+
+	for (i = 0; i < PKTBUFSRX; i++) {
+		/* RXBUF_BADR */
+		rxdes[i].rxdes3 = (unsigned int)NetRxPackets[i];
+		rxdes[i].rxdes0 &= ~FTGMAC100_RXDES0_RXPKT_RDY;
+	}
+
+	/* transmit ring */
+	writel((unsigned int)txdes, &ftgmac100->txr_badr);
+
+	/* receive ring */
+	writel((unsigned int)rxdes, &ftgmac100->rxr_badr);
+
+	/* poll receive descriptor automatically */
+	writel(FTGMAC100_APTC_RXPOLL_CNT(1), &ftgmac100->aptc);
+
+	/* config receive buffer size register */
+	writel(FTGMAC100_RBSR_SIZE(RBSR_DEFAULT_VALUE), &ftgmac100->rbsr);
+
+	/* enable transmitter, receiver */
+	maccr = FTGMAC100_MACCR_TXMAC_EN |
+		FTGMAC100_MACCR_RXMAC_EN |
+		FTGMAC100_MACCR_TXDMA_EN |
+		FTGMAC100_MACCR_RXDMA_EN |
+		FTGMAC100_MACCR_CRC_APD |
+		FTGMAC100_MACCR_FULLDUP |
+		FTGMAC100_MACCR_RX_RUNT |
+		FTGMAC100_MACCR_RX_BROADPKT;
+
+	writel(maccr, &ftgmac100->maccr);
+
+	if (!ftgmac100_phy_init(dev)) {
+		if (!ftgmac100_update_link_speed(dev))
+			return -1;
+	}
+
+	return 0;
+}
+
+/*
+ * Get a data block via Ethernet
+ */
+static int ftgmac100_recv(struct eth_device *dev)
+{
+	struct ftgmac100_data *priv = dev->priv;
+	struct ftgmac100_rxdes *curr_des;
+	unsigned short rxlen;
+
+	curr_des = &priv->rxdes[priv->rx_index];
+
+	if (!(curr_des->rxdes0 & FTGMAC100_RXDES0_RXPKT_RDY))
+		return -1;
+
+	if (curr_des->rxdes0 & (FTGMAC100_RXDES0_RX_ERR |
+				FTGMAC100_RXDES0_CRC_ERR |
+				FTGMAC100_RXDES0_FTL |
+				FTGMAC100_RXDES0_RUNT |
+				FTGMAC100_RXDES0_RX_ODD_NB)) {
+		return -1;
+	}
+
+	rxlen = FTGMAC100_RXDES0_VDBC(curr_des->rxdes0);
+
+	debug("%s(): RX buffer %d, %x received\n",
+	       __func__, priv->rx_index, rxlen);
+
+	/* pass the packet up to the protocol layers. */
+	NetReceive((void *)curr_des->rxdes3, rxlen);
+
+	/* release buffer to DMA */
+	curr_des->rxdes0 &= ~FTGMAC100_RXDES0_RXPKT_RDY;
+
+	priv->rx_index = (priv->rx_index + 1) % PKTBUFSRX;
+
+	return 0;
+}
+
+/*
+ * Send a data block via Ethernet
+ */
+static int
+ftgmac100_send(struct eth_device *dev, void *packet, int length)
+{
+	struct ftgmac100 *ftgmac100 = (struct ftgmac100 *)dev->iobase;
+	struct ftgmac100_data *priv = dev->priv;
+	struct ftgmac100_txdes *curr_des = &priv->txdes[priv->tx_index];
+	int start;
+
+	if (curr_des->txdes0 & FTGMAC100_TXDES0_TXDMA_OWN) {
+		debug("%s(): no TX descriptor available\n", __func__);
+		return -1;
+	}
+
+	debug("%s(%x, %x)\n", __func__, (int)packet, length);
+
+	length = (length < ETH_ZLEN) ? ETH_ZLEN : length;
+
+	/* initiate a transmit sequence */
+	curr_des->txdes3 = (unsigned int)packet;	/* TXBUF_BADR */
+
+	/* only one descriptor on TXBUF */
+	curr_des->txdes0 &= FTGMAC100_TXDES0_EDOTR;
+	curr_des->txdes0 |= FTGMAC100_TXDES0_FTS |
+			    FTGMAC100_TXDES0_LTS |
+			    FTGMAC100_TXDES0_TXBUF_SIZE(length) |
+			    FTGMAC100_TXDES0_TXDMA_OWN ;
+
+	/* start transmit */
+	writel(1, &ftgmac100->txpd);
+
+	/* wait for transfer to succeed */
+	start = get_timer(0);
+	while (curr_des->txdes0 & FTGMAC100_TXDES0_TXDMA_OWN) {
+		if (get_timer(0) >= 5) {
+			debug("%s(): timed out\n", __func__);
+			return -1;
+		}
+	}
+
+	debug("%s(): packet sent\n", __func__);
+
+	priv->tx_index = (priv->tx_index + 1) % PKTBUFSTX;
+
+	return 0;
+}
+
+int ftgmac100_initialize(bd_t *bd)
+{
+	struct eth_device *dev;
+	struct ftgmac100_data *priv;
+
+	dev = malloc(sizeof *dev);
+	if (!dev) {
+		printf("%s(): failed to allocate dev\n", __func__);
+		goto out;
+	}
+
+	/* Transmit and receive descriptors should align to 16 bytes */
+	priv = memalign(16, sizeof(struct ftgmac100_data));
+	if (!priv) {
+		printf("%s(): failed to allocate priv\n", __func__);
+		goto free_dev;
+	}
+
+	memset(dev, 0, sizeof(*dev));
+	memset(priv, 0, sizeof(*priv));
+
+	sprintf(dev->name, "FTGMAC100");
+	dev->iobase	= CONFIG_FTGMAC100_BASE;
+	dev->init	= ftgmac100_init;
+	dev->halt	= ftgmac100_halt;
+	dev->send	= ftgmac100_send;
+	dev->recv	= ftgmac100_recv;
+	dev->priv	= priv;
+
+	eth_register(dev);
+
+	return 1;
+
+free_dev:
+	free(dev);
+out:
+	return 0;
+}
diff --git a/drivers/net/ftgmac100.h b/drivers/net/ftgmac100.h
new file mode 100644
index 0000000..46b7369
--- /dev/null
+++ b/drivers/net/ftgmac100.h
@@ -0,0 +1,255 @@ 
+/*
+ * Faraday FTGMAC100 Ethernet
+ *
+ * (C) Copyright 2010 Faraday Technology
+ * Po-Yu Chuang <ratbert@faraday-tech.com>
+ *
+ * (C) Copyright 2010 Andes Technology
+ * Macpaul Lin <macpaul@andestech.com>
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __FTGMAC100_H
+#define __FTGMAC100_H
+
+/* The registers offset table of ftgmac100 */
+struct ftgmac100 {
+	unsigned int	isr;		/* 0x00 */
+	unsigned int	ier;		/* 0x04 */
+	unsigned int	mac_madr;	/* 0x08 */
+	unsigned int	mac_ladr;	/* 0x0c */
+	unsigned int	maht0;		/* 0x10 */
+	unsigned int	maht1;		/* 0x14 */
+	unsigned int	txpd;		/* 0x18 */
+	unsigned int	rxpd;		/* 0x1c */
+	unsigned int	txr_badr;	/* 0x20 */
+	unsigned int	rxr_badr;	/* 0x24 */
+	unsigned int	hptxpd;		/* 0x28 */
+	unsigned int	hptxpd_badr;	/* 0x2c */
+	unsigned int	itc;		/* 0x30 */
+	unsigned int	aptc;		/* 0x34 */
+	unsigned int	dblac;		/* 0x38 */
+	unsigned int	dmafifos;	/* 0x3c */
+	unsigned int	revr;		/* 0x40 */
+	unsigned int	fear;		/* 0x44 */
+	unsigned int	tpafcr;		/* 0x48 */
+	unsigned int	rbsr;		/* 0x4c */
+	unsigned int	maccr;		/* 0x50 */
+	unsigned int	macsr;		/* 0x54 */
+	unsigned int	tm;		/* 0x58 */
+	unsigned int	resv1;		/* 0x5c */ /* not defined in spec */
+	unsigned int	phycr;		/* 0x60 */
+	unsigned int	phydata;	/* 0x64 */
+	unsigned int	fcr;		/* 0x68 */
+	unsigned int	bpr;		/* 0x6c */
+	unsigned int	wolcr;		/* 0x70 */
+	unsigned int	wolsr;		/* 0x74 */
+	unsigned int	wfcrc;		/* 0x78 */
+	unsigned int	resv2;		/* 0x7c */ /* not defined in spec */
+	unsigned int	wfbm1;		/* 0x80 */
+	unsigned int	wfbm2;		/* 0x84 */
+	unsigned int	wfbm3;		/* 0x88 */
+	unsigned int	wfbm4;		/* 0x8c */
+	unsigned int	nptxr_ptr;	/* 0x90 */
+	unsigned int	hptxr_ptr;	/* 0x94 */
+	unsigned int	rxr_ptr;	/* 0x98 */
+	unsigned int	resv3;		/* 0x9c */ /* not defined in spec */
+	unsigned int	tx;		/* 0xa0 */
+	unsigned int	tx_mcol_scol;	/* 0xa4 */
+	unsigned int	tx_ecol_fail;	/* 0xa8 */
+	unsigned int	tx_lcol_und;	/* 0xac */
+	unsigned int	rx;		/* 0xb0 */
+	unsigned int	rx_bc;		/* 0xb4 */
+	unsigned int	rx_mc;		/* 0xb8 */
+	unsigned int	rx_pf_aep;	/* 0xbc */
+	unsigned int	rx_runt;	/* 0xc0 */
+	unsigned int	rx_crcer_ftl;	/* 0xc4 */
+	unsigned int	rx_col_lost;	/* 0xc8 */
+};
+
+/*
+ * Interrupt status register & interrupt enable register
+ */
+#define FTGMAC100_INT_RPKT_BUF		(1 << 0)
+#define FTGMAC100_INT_RPKT_FIFO		(1 << 1)
+#define FTGMAC100_INT_NO_RXBUF		(1 << 2)
+#define FTGMAC100_INT_RPKT_LOST		(1 << 3)
+#define FTGMAC100_INT_XPKT_ETH		(1 << 4)
+#define FTGMAC100_INT_XPKT_FIFO		(1 << 5)
+#define FTGMAC100_INT_NO_NPTXBUF	(1 << 6)
+#define FTGMAC100_INT_XPKT_LOST		(1 << 7)
+#define FTGMAC100_INT_AHB_ERR		(1 << 8)
+#define FTGMAC100_INT_PHYSTS_CHG	(1 << 9)
+#define FTGMAC100_INT_NO_HPTXBUF	(1 << 10)
+
+/*
+ * Interrupt timer control register
+ */
+#define FTGMAC100_ITC_RXINT_CNT(x)	(((x) & 0xf) << 0)
+#define FTGMAC100_ITC_RXINT_THR(x)	(((x) & 0x7) << 4)
+#define FTGMAC100_ITC_RXINT_TIME_SEL	(1 << 7)
+#define FTGMAC100_ITC_TXINT_CNT(x)	(((x) & 0xf) << 8)
+#define FTGMAC100_ITC_TXINT_THR(x)	(((x) & 0x7) << 12)
+#define FTGMAC100_ITC_TXINT_TIME_SEL	(1 << 15)
+
+/*
+ * Automatic polling timer control register
+ */
+#define FTGMAC100_APTC_RXPOLL_CNT(x)	(((x) & 0xf) << 0)
+#define FTGMAC100_APTC_RXPOLL_TIME_SEL	(1 << 4)
+#define FTGMAC100_APTC_TXPOLL_CNT(x)	(((x) & 0xf) << 8)
+#define FTGMAC100_APTC_TXPOLL_TIME_SEL	(1 << 12)
+
+/*
+ * DMA burst length and arbitration control register
+ */
+#define FTGMAC100_DBLAC_RXFIFO_LTHR(x)	(((x) & 0x7) << 0)
+#define FTGMAC100_DBLAC_RXFIFO_HTHR(x)	(((x) & 0x7) << 3)
+#define FTGMAC100_DBLAC_RX_THR_EN	(1 << 6)
+#define FTGMAC100_DBLAC_RXBURST_SIZE(x)	(((x) & 0x3) << 8)
+#define FTGMAC100_DBLAC_TXBURST_SIZE(x)	(((x) & 0x3) << 10)
+#define FTGMAC100_DBLAC_RXDES_SIZE(x)	(((x) & 0xf) << 12)
+#define FTGMAC100_DBLAC_TXDES_SIZE(x)	(((x) & 0xf) << 16)
+#define FTGMAC100_DBLAC_IFG_CNT(x)	(((x) & 0x7) << 20)
+#define FTGMAC100_DBLAC_IFG_INC		(1 << 23)
+
+/*
+ * DMA FIFO status register
+ */
+#define FTGMAC100_DMAFIFOS_RXDMA1_SM(dmafifos)	((dmafifos) & 0xf)
+#define FTGMAC100_DMAFIFOS_RXDMA2_SM(dmafifos)	(((dmafifos) >> 4) & 0xf)
+#define FTGMAC100_DMAFIFOS_RXDMA3_SM(dmafifos)	(((dmafifos) >> 8) & 0x7)
+#define FTGMAC100_DMAFIFOS_TXDMA1_SM(dmafifos)	(((dmafifos) >> 12) & 0xf)
+#define FTGMAC100_DMAFIFOS_TXDMA2_SM(dmafifos)	(((dmafifos) >> 16) & 0x3)
+#define FTGMAC100_DMAFIFOS_TXDMA3_SM(dmafifos)	(((dmafifos) >> 18) & 0xf)
+#define FTGMAC100_DMAFIFOS_RXFIFO_EMPTY		(1 << 26)
+#define FTGMAC100_DMAFIFOS_TXFIFO_EMPTY		(1 << 27)
+#define FTGMAC100_DMAFIFOS_RXDMA_GRANT		(1 << 28)
+#define FTGMAC100_DMAFIFOS_TXDMA_GRANT		(1 << 29)
+#define FTGMAC100_DMAFIFOS_RXDMA_REQ		(1 << 30)
+#define FTGMAC100_DMAFIFOS_TXDMA_REQ		(1 << 31)
+
+/*
+ * Receive buffer size register
+ */
+#define FTGMAC100_RBSR_SIZE(x)		((x) & 0x3fff)
+
+/*
+ * MAC control register
+ */
+#define FTGMAC100_MACCR_TXDMA_EN	(1 << 0)
+#define FTGMAC100_MACCR_RXDMA_EN	(1 << 1)
+#define FTGMAC100_MACCR_TXMAC_EN	(1 << 2)
+#define FTGMAC100_MACCR_RXMAC_EN	(1 << 3)
+#define FTGMAC100_MACCR_RM_VLAN		(1 << 4)
+#define FTGMAC100_MACCR_HPTXR_EN	(1 << 5)
+#define FTGMAC100_MACCR_LOOP_EN		(1 << 6)
+#define FTGMAC100_MACCR_ENRX_IN_HALFTX	(1 << 7)
+#define FTGMAC100_MACCR_FULLDUP		(1 << 8)
+#define FTGMAC100_MACCR_GIGA_MODE	(1 << 9)
+#define FTGMAC100_MACCR_CRC_APD		(1 << 10)
+#define FTGMAC100_MACCR_RX_RUNT		(1 << 12)
+#define FTGMAC100_MACCR_JUMBO_LF	(1 << 13)
+#define FTGMAC100_MACCR_RX_ALL		(1 << 14)
+#define FTGMAC100_MACCR_HT_MULTI_EN	(1 << 15)
+#define FTGMAC100_MACCR_RX_MULTIPKT	(1 << 16)
+#define FTGMAC100_MACCR_RX_BROADPKT	(1 << 17)
+#define FTGMAC100_MACCR_DISCARD_CRCERR	(1 << 18)
+#define FTGMAC100_MACCR_FAST_MODE	(1 << 19)
+#define FTGMAC100_MACCR_SW_RST		(1 << 31)
+
+/*
+ * PHY control register
+ */
+#define FTGMAC100_PHYCR_MDC_CYCTHR_MASK	0x3f
+#define FTGMAC100_PHYCR_MDC_CYCTHR(x)	((x) & 0x3f)
+#define FTGMAC100_PHYCR_PHYAD(x)	(((x) & 0x1f) << 16)
+#define FTGMAC100_PHYCR_REGAD(x)	(((x) & 0x1f) << 21)
+#define FTGMAC100_PHYCR_MIIRD		(1 << 26)
+#define FTGMAC100_PHYCR_MIIWR		(1 << 27)
+
+/*
+ * PHY data register
+ */
+#define FTGMAC100_PHYDATA_MIIWDATA(x)		((x) & 0xffff)
+#define FTGMAC100_PHYDATA_MIIRDATA(phydata)	(((phydata) >> 16) & 0xffff)
+
+/*
+ * Transmit descriptor, aligned to 16 bytes
+ */
+struct ftgmac100_txdes {
+	unsigned int	txdes0;
+	unsigned int	txdes1;
+	unsigned int	txdes2;	/* not used by HW */
+	unsigned int	txdes3;	/* TXBUF_BADR */
+} __attribute__ ((aligned(16)));
+
+#define FTGMAC100_TXDES0_TXBUF_SIZE(x)	((x) & 0x3fff)
+#define FTGMAC100_TXDES0_EDOTR		(1 << 15)
+#define FTGMAC100_TXDES0_CRC_ERR	(1 << 19)
+#define FTGMAC100_TXDES0_LTS		(1 << 28)
+#define FTGMAC100_TXDES0_FTS		(1 << 29)
+#define FTGMAC100_TXDES0_TXDMA_OWN	(1 << 31)
+
+#define FTGMAC100_TXDES1_VLANTAG_CI(x)	((x) & 0xffff)
+#define FTGMAC100_TXDES1_INS_VLANTAG	(1 << 16)
+#define FTGMAC100_TXDES1_TCP_CHKSUM	(1 << 17)
+#define FTGMAC100_TXDES1_UDP_CHKSUM	(1 << 18)
+#define FTGMAC100_TXDES1_IP_CHKSUM	(1 << 19)
+#define FTGMAC100_TXDES1_LLC		(1 << 22)
+#define FTGMAC100_TXDES1_TX2FIC		(1 << 30)
+#define FTGMAC100_TXDES1_TXIC		(1 << 31)
+
+/*
+ * Receive descriptor, aligned to 16 bytes
+ */
+struct ftgmac100_rxdes {
+	unsigned int	rxdes0;
+	unsigned int	rxdes1;
+	unsigned int	rxdes2;	/* not used by HW */
+	unsigned int	rxdes3;	/* RXBUF_BADR */
+} __attribute__ ((aligned(16)));
+
+#define FTGMAC100_RXDES0_VDBC(x)	((x) & 0x3fff)
+#define FTGMAC100_RXDES0_EDORR		(1 << 15)
+#define FTGMAC100_RXDES0_MULTICAST	(1 << 16)
+#define FTGMAC100_RXDES0_BROADCAST	(1 << 17)
+#define FTGMAC100_RXDES0_RX_ERR		(1 << 18)
+#define FTGMAC100_RXDES0_CRC_ERR	(1 << 19)
+#define FTGMAC100_RXDES0_FTL		(1 << 20)
+#define FTGMAC100_RXDES0_RUNT		(1 << 21)
+#define FTGMAC100_RXDES0_RX_ODD_NB	(1 << 22)
+#define FTGMAC100_RXDES0_FIFO_FULL	(1 << 23)
+#define FTGMAC100_RXDES0_PAUSE_OPCODE	(1 << 24)
+#define FTGMAC100_RXDES0_PAUSE_FRAME	(1 << 25)
+#define FTGMAC100_RXDES0_LRS		(1 << 28)
+#define FTGMAC100_RXDES0_FRS		(1 << 29)
+#define FTGMAC100_RXDES0_RXPKT_RDY	(1 << 31)
+
+#define FTGMAC100_RXDES1_VLANTAG_CI	0xffff
+#define FTGMAC100_RXDES1_PROT_MASK	(0x3 << 20)
+#define FTGMAC100_RXDES1_PROT_NONIP	(0x0 << 20)
+#define FTGMAC100_RXDES1_PROT_IP	(0x1 << 20)
+#define FTGMAC100_RXDES1_PROT_TCPIP	(0x2 << 20)
+#define FTGMAC100_RXDES1_PROT_UDPIP	(0x3 << 20)
+#define FTGMAC100_RXDES1_LLC		(1 << 22)
+#define FTGMAC100_RXDES1_DF		(1 << 23)
+#define FTGMAC100_RXDES1_VLANTAG_AVAIL	(1 << 24)
+#define FTGMAC100_RXDES1_TCP_CHKSUM_ERR	(1 << 25)
+#define FTGMAC100_RXDES1_UDP_CHKSUM_ERR	(1 << 26)
+#define FTGMAC100_RXDES1_IP_CHKSUM_ERR	(1 << 27)
+
+#endif /* __FTGMAC100_H */
diff --git a/include/netdev.h b/include/netdev.h
index 7f66419..1a542e8 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -61,6 +61,7 @@  int ethoc_initialize(u8 dev_num, int base_addr);
 int eth_3com_initialize (bd_t * bis);
 int fec_initialize (bd_t *bis);
 int fecmxc_initialize (bd_t *bis);
+int ftgmac100_initialize(bd_t *bits);
 int ftmac100_initialize(bd_t *bits);
 int greth_initialize(bd_t *bis);
 void gt6426x_eth_initialize(bd_t *bis);