mpc83xx: add QE ethernet support

this patch adds support for the QUICC Engine based UCC gigabit ethernet device.

1 files changed, 1266 insertions, 0 deletions

diff --git a/drivers/qe/uec.c b/drivers/qe/uec.c
new file mode 100644
index 0000000..f640c81
--- /dev/null
+++ b/drivers/qe/uec.c
@@ -0,0 +1,1266 @@
+/*
+ * Copyright (C) 2006 Freescale Semiconductor, Inc.
+ *
+ * Dave Liu <daveliu@freescale.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., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include "common.h"
+#include "net.h"
+#include "malloc.h"
+#include "asm/errno.h"
+#include "asm/io.h"
+#include "asm/immap_qe.h"
+#include "qe.h"
+#include "uccf.h"
+#include "uec.h"
+#include "uec_phy.h"
+
+#if defined(CONFIG_QE)
+
+#ifdef CONFIG_UEC_ETH1
+static uec_info_t eth1_uec_info = {
+	.uf_info		= {
+		.ucc_num	= CFG_UEC1_UCC_NUM,
+		.rx_clock	= CFG_UEC1_RX_CLK,
+		.tx_clock	= CFG_UEC1_TX_CLK,
+		.eth_type	= CFG_UEC1_ETH_TYPE,
+	},
+	.num_threads_tx		= UEC_NUM_OF_THREADS_4,
+	.num_threads_rx		= UEC_NUM_OF_THREADS_4,
+	.riscTx			= QE_RISC_ALLOCATION_RISC1_AND_RISC2,
+	.riscRx			= QE_RISC_ALLOCATION_RISC1_AND_RISC2,
+	.tx_bd_ring_len		= 16,
+	.rx_bd_ring_len		= 16,
+	.phy_address		= CFG_UEC1_PHY_ADDR,
+	.enet_interface		= CFG_UEC1_INTERFACE_MODE,
+};
+#endif
+#ifdef CONFIG_UEC_ETH2
+static uec_info_t eth2_uec_info = {
+	.uf_info		= {
+		.ucc_num	= CFG_UEC2_UCC_NUM,
+		.rx_clock	= CFG_UEC2_RX_CLK,
+		.tx_clock	= CFG_UEC2_TX_CLK,
+		.eth_type	= CFG_UEC2_ETH_TYPE,
+	},
+	.num_threads_tx		= UEC_NUM_OF_THREADS_4,
+	.num_threads_rx		= UEC_NUM_OF_THREADS_4,
+	.riscTx			= QE_RISC_ALLOCATION_RISC1_AND_RISC2,
+	.riscRx			= QE_RISC_ALLOCATION_RISC1_AND_RISC2,
+	.tx_bd_ring_len		= 16,
+	.rx_bd_ring_len		= 16,
+	.phy_address		= CFG_UEC2_PHY_ADDR,
+	.enet_interface		= CFG_UEC2_INTERFACE_MODE,
+};
+#endif
+
+static int uec_mac_enable(uec_private_t *uec, comm_dir_e mode)
+{
+	uec_t		*uec_regs;
+	u32		maccfg1;
+
+	if (!uec) {
+		printf("%s: uec not initial\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	uec_regs = uec->uec_regs;
+
+	maccfg1 = in_be32(&uec_regs->maccfg1);
+
+	if (mode & COMM_DIR_TX)	{
+		maccfg1 |= MACCFG1_ENABLE_TX;
+		out_be32(&uec_regs->maccfg1, maccfg1);
+		uec->mac_tx_enabled = 1;
+	}
+
+	if (mode & COMM_DIR_RX)	{
+		maccfg1 |= MACCFG1_ENABLE_RX;
+		out_be32(&uec_regs->maccfg1, maccfg1);
+		uec->mac_rx_enabled = 1;
+	}
+
+	return 0;
+}
+
+static int uec_mac_disable(uec_private_t *uec, comm_dir_e mode)
+{
+	uec_t		*uec_regs;
+	u32		maccfg1;
+
+	if (!uec) {
+		printf("%s: uec not initial\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	uec_regs = uec->uec_regs;
+
+	maccfg1 = in_be32(&uec_regs->maccfg1);
+
+	if (mode & COMM_DIR_TX)	{
+		maccfg1 &= ~MACCFG1_ENABLE_TX;
+		out_be32(&uec_regs->maccfg1, maccfg1);
+		uec->mac_tx_enabled = 0;
+	}
+
+	if (mode & COMM_DIR_RX)	{
+		maccfg1 &= ~MACCFG1_ENABLE_RX;
+		out_be32(&uec_regs->maccfg1, maccfg1);
+		uec->mac_rx_enabled = 0;
+	}
+
+	return 0;
+}
+
+static int uec_graceful_stop_tx(uec_private_t *uec)
+{
+	ucc_fast_t		*uf_regs;
+	u32			cecr_subblock;
+	u32			ucce;
+
+	if (!uec || !uec->uccf) {
+		printf("%s: No handle passed.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	uf_regs = uec->uccf->uf_regs;
+
+	/* Clear the grace stop event */
+	out_be32(&uf_regs->ucce, UCCE_GRA);
+
+	/* Issue host command */
+	cecr_subblock =
+		 ucc_fast_get_qe_cr_subblock(uec->uec_info->uf_info.ucc_num);
+	qe_issue_cmd(QE_GRACEFUL_STOP_TX, cecr_subblock,
+			 (u8)QE_CR_PROTOCOL_ETHERNET, 0);
+
+	/* Wait for command to complete */
+	do {
+		ucce = in_be32(&uf_regs->ucce);
+	} while (! (ucce & UCCE_GRA));
+
+	uec->grace_stopped_tx = 1;
+
+	return 0;
+}
+
+static int uec_graceful_stop_rx(uec_private_t *uec)
+{
+	u32		cecr_subblock;
+	u8		ack;
+
+	if (!uec) {
+		printf("%s: No handle passed.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	if (!uec->p_rx_glbl_pram) {
+		printf("%s: No init rx global parameter\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	/* Clear acknowledge bit */
+	ack = uec->p_rx_glbl_pram->rxgstpack;
+	ack &= ~GRACEFUL_STOP_ACKNOWLEDGE_RX;
+	uec->p_rx_glbl_pram->rxgstpack = ack;
+
+	/* Keep issuing cmd and checking ack bit until it is asserted */
+	do {
+		/* Issue host command */
+		cecr_subblock =
+		 ucc_fast_get_qe_cr_subblock(uec->uec_info->uf_info.ucc_num);
+		qe_issue_cmd(QE_GRACEFUL_STOP_RX, cecr_subblock,
+				 (u8)QE_CR_PROTOCOL_ETHERNET, 0);
+		ack = uec->p_rx_glbl_pram->rxgstpack;
+	} while (! (ack & GRACEFUL_STOP_ACKNOWLEDGE_RX ));
+
+	uec->grace_stopped_rx = 1;
+
+	return 0;
+}
+
+static int uec_restart_tx(uec_private_t *uec)
+{
+	u32		cecr_subblock;
+
+	if (!uec || !uec->uec_info) {
+		printf("%s: No handle passed.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	cecr_subblock =
+	 ucc_fast_get_qe_cr_subblock(uec->uec_info->uf_info.ucc_num);
+	qe_issue_cmd(QE_RESTART_TX, cecr_subblock,
+			 (u8)QE_CR_PROTOCOL_ETHERNET, 0);
+
+	uec->grace_stopped_tx = 0;
+
+	return 0;
+}
+
+static int uec_restart_rx(uec_private_t *uec)
+{
+	u32		cecr_subblock;
+
+	if (!uec || !uec->uec_info) {
+		printf("%s: No handle passed.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	cecr_subblock =
+	 ucc_fast_get_qe_cr_subblock(uec->uec_info->uf_info.ucc_num);
+	qe_issue_cmd(QE_RESTART_RX, cecr_subblock,
+			 (u8)QE_CR_PROTOCOL_ETHERNET, 0);
+
+	uec->grace_stopped_rx = 0;
+
+	return 0;
+}
+
+static int uec_open(uec_private_t *uec, comm_dir_e mode)
+{
+	ucc_fast_private_t	*uccf;
+
+	if (!uec || !uec->uccf) {
+		printf("%s: No handle passed.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	uccf = uec->uccf;
+
+	/* check if the UCC number is in range. */
+	if (uec->uec_info->uf_info.ucc_num >= UCC_MAX_NUM) {
+		printf("%s: ucc_num out of range.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	/* Enable MAC */
+	uec_mac_enable(uec, mode);
+
+	/* Enable UCC fast */
+	ucc_fast_enable(uccf, mode);
+
+	/* RISC microcode start */
+	if ((mode & COMM_DIR_TX) && uec->grace_stopped_tx) {
+		uec_restart_tx(uec);
+	}
+	if ((mode & COMM_DIR_RX) && uec->grace_stopped_rx) {
+		uec_restart_rx(uec);
+	}
+
+	return 0;
+}
+
+static int uec_stop(uec_private_t *uec, comm_dir_e mode)
+{
+	ucc_fast_private_t	*uccf;
+
+	if (!uec || !uec->uccf) {
+		printf("%s: No handle passed.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	uccf = uec->uccf;
+
+	/* check if the UCC number is in range. */
+	if (uec->uec_info->uf_info.ucc_num >= UCC_MAX_NUM) {
+		printf("%s: ucc_num out of range.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	/* Stop any transmissions */
+	if ((mode & COMM_DIR_TX) && !uec->grace_stopped_tx) {
+		uec_graceful_stop_tx(uec);
+	}
+	/* Stop any receptions */
+	if ((mode & COMM_DIR_RX) && !uec->grace_stopped_rx) {
+		uec_graceful_stop_rx(uec);
+	}
+
+	/* Disable the UCC fast */
+	ucc_fast_disable(uec->uccf, mode);
+
+	/* Disable the MAC */
+	uec_mac_disable(uec, mode);
+
+	return 0;
+}
+
+static int uec_set_mac_duplex(uec_private_t *uec, int duplex)
+{
+	uec_t		*uec_regs;
+	u32		maccfg2;
+
+	if (!uec) {
+		printf("%s: uec not initial\n", __FUNCTION__);
+		return -EINVAL;
+	}
+	uec_regs = uec->uec_regs;
+
+	if (duplex == DUPLEX_HALF) {
+		maccfg2 = in_be32(&uec_regs->maccfg2);
+		maccfg2 &= ~MACCFG2_FDX;
+		out_be32(&uec_regs->maccfg2, maccfg2);
+	}
+
+	if (duplex == DUPLEX_FULL) {
+		maccfg2 = in_be32(&uec_regs->maccfg2);
+		maccfg2 |= MACCFG2_FDX;
+		out_be32(&uec_regs->maccfg2, maccfg2);
+	}
+
+	return 0;
+}
+
+static int uec_set_mac_if_mode(uec_private_t *uec, enet_interface_e if_mode)
+{
+	enet_interface_e	enet_if_mode;
+	uec_info_t 		*uec_info;
+	uec_t			*uec_regs;
+	u32			upsmr;
+	u32			maccfg2;
+
+	if (!uec) {
+		printf("%s: uec not initial\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	uec_info = uec->uec_info;
+	uec_regs = uec->uec_regs;
+	enet_if_mode = if_mode;
+
+	maccfg2 = in_be32(&uec_regs->maccfg2);
+	maccfg2 &= ~MACCFG2_INTERFACE_MODE_MASK;
+
+	upsmr = in_be32(&uec->uccf->uf_regs->upsmr);
+	upsmr &= ~(UPSMR_RPM | UPSMR_TBIM | UPSMR_R10M | UPSMR_RMM);
+
+	switch (enet_if_mode) {
+		case ENET_100_MII:
+		case ENET_10_MII:
+			maccfg2 |= MACCFG2_INTERFACE_MODE_NIBBLE;
+			break;
+		case ENET_1000_GMII:
+			maccfg2 |= MACCFG2_INTERFACE_MODE_BYTE;
+			break;
+		case ENET_1000_TBI:
+			maccfg2 |= MACCFG2_INTERFACE_MODE_BYTE;
+			upsmr |= UPSMR_TBIM;
+			break;
+		case ENET_1000_RTBI:
+			maccfg2 |= MACCFG2_INTERFACE_MODE_BYTE;
+			upsmr |= (UPSMR_RPM | UPSMR_TBIM);
+			break;
+		case ENET_1000_RGMII:
+			maccfg2 |= MACCFG2_INTERFACE_MODE_BYTE;
+			upsmr |= UPSMR_RPM;
+			break;
+		case ENET_100_RGMII:
+			maccfg2 |= MACCFG2_INTERFACE_MODE_NIBBLE;
+			upsmr |= UPSMR_RPM;
+			break;
+		case ENET_10_RGMII:
+			maccfg2 |= MACCFG2_INTERFACE_MODE_NIBBLE;
+			upsmr |= (UPSMR_RPM | UPSMR_R10M);
+			break;
+		case ENET_100_RMII:
+			maccfg2 |= MACCFG2_INTERFACE_MODE_NIBBLE;
+			upsmr |= UPSMR_RMM;
+			break;
+		case ENET_10_RMII:
+			maccfg2 |= MACCFG2_INTERFACE_MODE_NIBBLE;
+			upsmr |= (UPSMR_R10M | UPSMR_RMM);
+			break;
+		default:
+			return -EINVAL;
+			break;
+	}
+	out_be32(&uec_regs->maccfg2, maccfg2);
+	out_be32(&uec->uccf->uf_regs->upsmr, upsmr);
+
+	return 0;
+}
+
+static int init_mii_management_configuration(uec_t *uec_regs)
+{
+	uint		timeout = 0x1000;
+	u32		miimcfg = 0;
+
+	miimcfg = in_be32(&uec_regs->miimcfg);
+	miimcfg |= MIIMCFG_MNGMNT_CLC_DIV_INIT_VALUE;
+	out_be32(&uec_regs->miimcfg, miimcfg);
+
+	/* Wait until the bus is free */
+	while ((in_be32(&uec_regs->miimcfg) & MIIMIND_BUSY) && timeout--);
+	if (timeout <= 0) {
+		printf("%s: The MII Bus is stuck!", __FUNCTION__);
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+static int init_phy(struct eth_device *dev)
+{
+	uec_private_t		*uec;
+	uec_t			*uec_regs;
+	struct uec_mii_info	*mii_info;
+	struct phy_info		*curphy;
+	int			err;
+
+	uec = (uec_private_t *)dev->priv;
+	uec_regs = uec->uec_regs;
+
+	uec->oldlink = 0;
+	uec->oldspeed = 0;
+	uec->oldduplex = -1;
+
+	mii_info = malloc(sizeof(*mii_info));
+	if (!mii_info) {
+		printf("%s: Could not allocate mii_info", dev->name);
+		return -ENOMEM;
+	}
+	memset(mii_info, 0, sizeof(*mii_info));
+
+	mii_info->speed = SPEED_1000;
+	mii_info->duplex = DUPLEX_FULL;
+	mii_info->pause = 0;
+	mii_info->link = 1;
+
+	mii_info->advertising = (ADVERTISED_10baseT_Half |
+				ADVERTISED_10baseT_Full |
+				ADVERTISED_100baseT_Half |
+				ADVERTISED_100baseT_Full |
+				ADVERTISED_1000baseT_Full);
+	mii_info->autoneg = 1;
+	mii_info->mii_id = uec->uec_info->phy_address;
+	mii_info->dev = dev;
+
+	mii_info->mdio_read = &read_phy_reg;
+	mii_info->mdio_write = &write_phy_reg;
+
+	uec->mii_info = mii_info;
+
+	if (init_mii_management_configuration(uec_regs)) {
+		printf("%s: The MII Bus is stuck!", dev->name);
+		err = -1;
+		goto bus_fail;
+	}
+
+	/* get info for this PHY */
+	curphy = get_phy_info(uec->mii_info);
+	if (!curphy) {
+		printf("%s: No PHY found", dev->name);
+		err = -1;
+		goto no_phy;
+	}
+
+	mii_info->phyinfo = curphy;
+
+	/* Run the commands which initialize the PHY */
+	if (curphy->init) {
+		err = curphy->init(uec->mii_info);
+		if (err)
+			goto phy_init_fail;
+	}
+
+	return 0;
+
+phy_init_fail:
+no_phy:
+bus_fail:
+	free(mii_info);
+	return err;
+}
+
+static void adjust_link(struct eth_device *dev)
+{
+	uec_private_t		*uec = (uec_private_t *)dev->priv;
+	uec_t			*uec_regs;
+	struct uec_mii_info	*mii_info = uec->mii_info;
+
+	extern void change_phy_interface_mode(struct eth_device *dev,
+					 enet_interface_e mode);
+	uec_regs = uec->uec_regs;
+
+	if (mii_info->link) {
+		/* Now we make sure that we can be in full duplex mode.
+		* If not, we operate in half-duplex mode. */
+		if (mii_info->duplex != uec->oldduplex) {
+			if (!(mii_info->duplex)) {
+				uec_set_mac_duplex(uec, DUPLEX_HALF);
+				printf("%s: Half Duplex\n", dev->name);
+			} else {
+				uec_set_mac_duplex(uec, DUPLEX_FULL);
+				printf("%s: Full Duplex\n", dev->name);
+			}
+			uec->oldduplex = mii_info->duplex;
+		}
+
+		if (mii_info->speed != uec->oldspeed) {
+			switch (mii_info->speed) {
+				case 1000:
+					break;
+				case 100:
+					printf ("switching to rgmii 100\n");
+					/* change phy to rgmii 100 */
+					change_phy_interface_mode(dev,
+								ENET_100_RGMII);
+					/* change the MAC interface mode */
+					uec_set_mac_if_mode(uec,ENET_100_RGMII);
+					break;
+				case 10:
+					printf ("switching to rgmii 10\n");
+					/* change phy to rgmii 10 */
+					change_phy_interface_mode(dev,
+								ENET_10_RGMII);
+					/* change the MAC interface mode */
+					uec_set_mac_if_mode(uec,ENET_10_RGMII);
+					break;
+				default:
+					printf("%s: Ack,Speed(%d)is illegal\n",
+						dev->name, mii_info->speed);
+					break;
+			}
+
+			printf("%s: Speed %dBT\n", dev->name, mii_info->speed);
+			uec->oldspeed = mii_info->speed;
+		}
+
+		if (!uec->oldlink) {
+			printf("%s: Link is up\n", dev->name);
+			uec->oldlink = 1;
+		}
+
+	} else { /* if (mii_info->link) */
+		if (uec->oldlink) {
+			printf("%s: Link is down\n", dev->name);
+			uec->oldlink = 0;
+			uec->oldspeed = 0;
+			uec->oldduplex = -1;
+		}
+	}
+}
+
+static void phy_change(struct eth_device *dev)
+{
+	uec_private_t	*uec = (uec_private_t *)dev->priv;
+	uec_t		*uec_regs;
+	int		result = 0;
+
+	uec_regs = uec->uec_regs;
+
+	/* Delay 5s to give the PHY a chance to change the register state */
+	udelay(5000000);
+
+	/* Update the link, speed, duplex */
+	result = uec->mii_info->phyinfo->read_status(uec->mii_info);
+
+	/* Adjust the interface according to speed */
+	if ((0 == result) || (uec->mii_info->link == 0)) {
+		adjust_link(dev);
+	}
+}
+
+static int uec_set_mac_address(uec_private_t *uec, u8 *mac_addr)
+{
+	uec_t		*uec_regs;
+	u32		mac_addr1;
+	u32		mac_addr2;
+
+	if (!uec) {
+		printf("%s: uec not initial\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	uec_regs = uec->uec_regs;
+
+	/* if a station address of 0x12345678ABCD, perform a write to
+	MACSTNADDR1 of 0xCDAB7856,
+	MACSTNADDR2 of 0x34120000 */
+
+	mac_addr1 = (mac_addr[5] << 24) | (mac_addr[4] << 16) | \
+			(mac_addr[3] << 8)  | (mac_addr[2]);
+	out_be32(&uec_regs->macstnaddr1, mac_addr1);
+
+	mac_addr2 = ((mac_addr[1] << 24) | (mac_addr[0] << 16)) & 0xffff0000;
+	out_be32(&uec_regs->macstnaddr2, mac_addr2);
+
+	return 0;
+}
+
+static int uec_convert_threads_num(uec_num_of_threads_e threads_num,
+					 int *threads_num_ret)
+{
+	int	num_threads_numerica;
+
+	switch (threads_num) {
+		case UEC_NUM_OF_THREADS_1:
+			num_threads_numerica = 1;
+			break;
+		case UEC_NUM_OF_THREADS_2:
+			num_threads_numerica = 2;
+			break;
+		case UEC_NUM_OF_THREADS_4:
+			num_threads_numerica = 4;
+			break;
+		case UEC_NUM_OF_THREADS_6:
+			num_threads_numerica = 6;
+			break;
+		case UEC_NUM_OF_THREADS_8:
+			num_threads_numerica = 8;
+			break;
+		default:
+			printf("%s: Bad number of threads value.",
+				 __FUNCTION__);
+			return -EINVAL;
+	}
+
+	*threads_num_ret = num_threads_numerica;
+
+	return 0;
+}
+
+static void uec_init_tx_parameter(uec_private_t *uec, int num_threads_tx)
+{
+	uec_info_t	*uec_info;
+	u32		end_bd;
+	u8		bmrx = 0;
+	int		i;
+
+	uec_info = uec->uec_info;
+
+	/* Alloc global Tx parameter RAM page */
+	uec->tx_glbl_pram_offset = qe_muram_alloc(
+				sizeof(uec_tx_global_pram_t),
+				 UEC_TX_GLOBAL_PRAM_ALIGNMENT);
+	uec->p_tx_glbl_pram = (uec_tx_global_pram_t *)
+				qe_muram_addr(uec->tx_glbl_pram_offset);
+
+	/* Zero the global Tx prameter RAM */
+	memset(uec->p_tx_glbl_pram, 0, sizeof(uec_tx_global_pram_t));
+
+	/* Init global Tx parameter RAM */
+
+	/* TEMODER, RMON statistics disable, one Tx queue */
+	out_be16(&uec->p_tx_glbl_pram->temoder, TEMODER_INIT_VALUE);
+
+	/* SQPTR */
+	uec->send_q_mem_reg_offset = qe_muram_alloc(
+				sizeof(uec_send_queue_qd_t),
+				 UEC_SEND_QUEUE_QUEUE_DESCRIPTOR_ALIGNMENT);
+	uec->p_send_q_mem_reg = (uec_send_queue_mem_region_t *)
+				qe_muram_addr(uec->send_q_mem_reg_offset);
+	out_be32(&uec->p_tx_glbl_pram->sqptr, uec->send_q_mem_reg_offset);
+
+	/* Setup the table with TxBDs ring */
+	end_bd = (u32)uec->p_tx_bd_ring + (uec_info->tx_bd_ring_len - 1)
+					 * SIZEOFBD;
+	out_be32(&uec->p_send_q_mem_reg->sqqd[0].bd_ring_base,
+				 (u32)(uec->p_tx_bd_ring));
+	out_be32(&uec->p_send_q_mem_reg->sqqd[0].last_bd_completed_address,
+						 end_bd);
+
+	/* Scheduler Base Pointer, we have only one Tx queue, no need it */
+	out_be32(&uec->p_tx_glbl_pram->schedulerbasepointer, 0);
+
+	/* TxRMON Base Pointer, TxRMON disable, we don't need it */
+	out_be32(&uec->p_tx_glbl_pram->txrmonbaseptr, 0);
+
+	/* TSTATE, global snooping, big endian, the CSB bus selected */
+	bmrx = BMR_INIT_VALUE;
+	out_be32(&uec->p_tx_glbl_pram->tstate, ((u32)(bmrx) << BMR_SHIFT));
+
+	/* IPH_Offset */
+	for (i = 0; i < MAX_IPH_OFFSET_ENTRY; i++) {
+		out_8(&uec->p_tx_glbl_pram->iphoffset[i], 0);
+	}
+
+	/* VTAG table */
+	for (i = 0; i < UEC_TX_VTAG_TABLE_ENTRY_MAX; i++) {
+		out_be32(&uec->p_tx_glbl_pram->vtagtable[i], 0);
+	}
+
+	/* TQPTR */
+	uec->thread_dat_tx_offset = qe_muram_alloc(
+		num_threads_tx * sizeof(uec_thread_data_tx_t) +
+		 32 *(num_threads_tx == 1), UEC_THREAD_DATA_ALIGNMENT);
+
+	uec->p_thread_data_tx = (uec_thread_data_tx_t *)
+				qe_muram_addr(uec->thread_dat_tx_offset);
+	out_be32(&uec->p_tx_glbl_pram->tqptr, uec->thread_dat_tx_offset);
+}
+
+static void uec_init_rx_parameter(uec_private_t *uec, int num_threads_rx)
+{
+	u8	bmrx = 0;
+	int	i;
+	uec_82xx_address_filtering_pram_t	*p_af_pram;
+
+	/* Allocate global Rx parameter RAM page */
+	uec->rx_glbl_pram_offset = qe_muram_alloc(
+		sizeof(uec_rx_global_pram_t), UEC_RX_GLOBAL_PRAM_ALIGNMENT);
+	uec->p_rx_glbl_pram = (uec_rx_global_pram_t *)
+				qe_muram_addr(uec->rx_glbl_pram_offset);
+
+	/* Zero Global Rx parameter RAM */
+	memset(uec->p_rx_glbl_pram, 0, sizeof(uec_rx_global_pram_t));
+
+	/* Init global Rx parameter RAM */
+	/* REMODER, Extended feature mode disable, VLAN disable,
+	 LossLess flow control disable, Receive firmware statisic disable,
+	 Extended address parsing mode disable, One Rx queues,
+	 Dynamic maximum/minimum frame length disable, IP checksum check
+	 disable, IP address alignment disable
+	*/
+	out_be32(&uec->p_rx_glbl_pram->remoder, REMODER_INIT_VALUE);
+
+	/* RQPTR */
+	uec->thread_dat_rx_offset = qe_muram_alloc(
+			num_threads_rx * sizeof(uec_thread_data_rx_t),
+			 UEC_THREAD_DATA_ALIGNMENT);
+	uec->p_thread_data_rx = (uec_thread_data_rx_t *)
+				qe_muram_addr(uec->thread_dat_rx_offset);
+	out_be32(&uec->p_rx_glbl_pram->rqptr, uec->thread_dat_rx_offset);
+
+	/* Type_or_Len */
+	out_be16(&uec->p_rx_glbl_pram->typeorlen, 3072);
+
+	/* RxRMON base pointer, we don't need it */
+	out_be32(&uec->p_rx_glbl_pram->rxrmonbaseptr, 0);
+
+	/* IntCoalescingPTR, we don't need it, no interrupt */
+	out_be32(&uec->p_rx_glbl_pram->intcoalescingptr, 0);
+
+	/* RSTATE, global snooping, big endian, the CSB bus selected */
+	bmrx = BMR_INIT_VALUE;
+	out_8(&uec->p_rx_glbl_pram->rstate, bmrx);
+
+	/* MRBLR */
+	out_be16(&uec->p_rx_glbl_pram->mrblr, MAX_RXBUF_LEN);
+
+	/* RBDQPTR */
+	uec->rx_bd_qs_tbl_offset = qe_muram_alloc(
+				sizeof(uec_rx_bd_queues_entry_t) + \
+				sizeof(uec_rx_prefetched_bds_t),
+				 UEC_RX_BD_QUEUES_ALIGNMENT);
+	uec->p_rx_bd_qs_tbl = (uec_rx_bd_queues_entry_t *)
+				qe_muram_addr(uec->rx_bd_qs_tbl_offset);
+
+	/* Zero it */
+	memset(uec->p_rx_bd_qs_tbl, 0, sizeof(uec_rx_bd_queues_entry_t) + \
+					sizeof(uec_rx_prefetched_bds_t));
+	out_be32(&uec->p_rx_glbl_pram->rbdqptr, uec->rx_bd_qs_tbl_offset);
+	out_be32(&uec->p_rx_bd_qs_tbl->externalbdbaseptr,
+		 (u32)uec->p_rx_bd_ring);
+
+	/* MFLR */
+	out_be16(&uec->p_rx_glbl_pram->mflr, MAX_FRAME_LEN);
+	/* MINFLR */
+	out_be16(&uec->p_rx_glbl_pram->minflr, MIN_FRAME_LEN);
+	/* MAXD1 */
+	out_be16(&uec->p_rx_glbl_pram->maxd1, MAX_DMA1_LEN);
+	/* MAXD2 */
+	out_be16(&uec->p_rx_glbl_pram->maxd2, MAX_DMA2_LEN);
+	/* ECAM_PTR */
+	out_be32(&uec->p_rx_glbl_pram->ecamptr, 0);
+	/* L2QT */
+	out_be32(&uec->p_rx_glbl_pram->l2qt, 0);
+	/* L3QT */
+	for (i = 0; i < 8; i++)	{
+		out_be32(&uec->p_rx_glbl_pram->l3qt[i], 0);
+	}
+
+	/* VLAN_TYPE */
+	out_be16(&uec->p_rx_glbl_pram->vlantype, 0x8100);
+	/* TCI */
+	out_be16(&uec->p_rx_glbl_pram->vlantci, 0);
+
+	/* Clear PQ2 style address filtering hash table */
+	p_af_pram = (uec_82xx_address_filtering_pram_t *) \
+			uec->p_rx_glbl_pram->addressfiltering;
+
+	p_af_pram->iaddr_h = 0;
+	p_af_pram->iaddr_l = 0;
+	p_af_pram->gaddr_h = 0;
+	p_af_pram->gaddr_l = 0;
+}
+
+static int uec_issue_init_enet_rxtx_cmd(uec_private_t *uec,
+					 int thread_tx, int thread_rx)
+{
+	uec_init_cmd_pram_t		*p_init_enet_param;
+	u32				init_enet_param_offset;
+	uec_info_t			*uec_info;
+	int				i;
+	int				snum;
+	u32				init_enet_offset;
+	u32				entry_val;
+	u32				command;
+	u32				cecr_subblock;
+
+	uec_info = uec->uec_info;
+
+	/* Allocate init enet command parameter */
+	uec->init_enet_param_offset = qe_muram_alloc(
+					sizeof(uec_init_cmd_pram_t), 4);
+	init_enet_param_offset = uec->init_enet_param_offset;
+	uec->p_init_enet_param = (uec_init_cmd_pram_t *)
+				qe_muram_addr(uec->init_enet_param_offset);
+
+	/* Zero init enet command struct */
+	memset((void *)uec->p_init_enet_param, 0, sizeof(uec_init_cmd_pram_t));
+
+	/* Init the command struct */
+	p_init_enet_param = uec->p_init_enet_param;
+	p_init_enet_param->resinit0 = ENET_INIT_PARAM_MAGIC_RES_INIT0;
+	p_init_enet_param->resinit1 = ENET_INIT_PARAM_MAGIC_RES_INIT1;
+	p_init_enet_param->resinit2 = ENET_INIT_PARAM_MAGIC_RES_INIT2;
+	p_init_enet_param->resinit3 = ENET_INIT_PARAM_MAGIC_RES_INIT3;
+	p_init_enet_param->resinit4 = ENET_INIT_PARAM_MAGIC_RES_INIT4;
+	p_init_enet_param->largestexternallookupkeysize = 0;
+
+	p_init_enet_param->rgftgfrxglobal |= ((u32)uec_info->num_threads_rx)
+					 << ENET_INIT_PARAM_RGF_SHIFT;
+	p_init_enet_param->rgftgfrxglobal |= ((u32)uec_info->num_threads_tx)
+					 << ENET_INIT_PARAM_TGF_SHIFT;
+
+	/* Init Rx global parameter pointer */
+	p_init_enet_param->rgftgfrxglobal |= uec->rx_glbl_pram_offset |
+						 (u32)uec_info->riscRx;
+
+	/* Init Rx threads */
+	for (i = 0; i < (thread_rx + 1); i++) {
+		if ((snum = qe_get_snum()) < 0) {
+			printf("%s can not get snum\n", __FUNCTION__);
+			return -ENOMEM;
+		}
+
+		if (i==0) {
+			init_enet_offset = 0;
+		} else {
+			init_enet_offset = qe_muram_alloc(
+					sizeof(uec_thread_rx_pram_t),
+					 UEC_THREAD_RX_PRAM_ALIGNMENT);
+		}
+
+		entry_val = ((u32)snum << ENET_INIT_PARAM_SNUM_SHIFT) |
+				 init_enet_offset | (u32)uec_info->riscRx;
+		p_init_enet_param->rxthread[i] = entry_val;
+	}
+
+	/* Init Tx global parameter pointer */
+	p_init_enet_param->txglobal = uec->tx_glbl_pram_offset |
+					 (u32)uec_info->riscTx;
+
+	/* Init Tx threads */
+	for (i = 0; i < thread_tx; i++) {
+		if ((snum = qe_get_snum()) < 0)	{
+			printf("%s can not get snum\n", __FUNCTION__);
+			return -ENOMEM;
+		}
+
+		init_enet_offset = qe_muram_alloc(sizeof(uec_thread_tx_pram_t),
+						 UEC_THREAD_TX_PRAM_ALIGNMENT);
+
+		entry_val = ((u32)snum << ENET_INIT_PARAM_SNUM_SHIFT) |
+				 init_enet_offset | (u32)uec_info->riscTx;
+		p_init_enet_param->txthread[i] = entry_val;
+	}
+
+	__asm__ __volatile__("sync");
+
+	/* Issue QE command */
+	command = QE_INIT_TX_RX;
+	cecr_subblock =	ucc_fast_get_qe_cr_subblock(
+				uec->uec_info->uf_info.ucc_num);
+	qe_issue_cmd(command, cecr_subblock, (u8) QE_CR_PROTOCOL_ETHERNET,
+						 init_enet_param_offset);
+
+	return 0;
+}
+
+static int uec_startup(uec_private_t *uec)
+{
+	uec_info_t			*uec_info;
+	ucc_fast_info_t			*uf_info;
+	ucc_fast_private_t		*uccf;
+	ucc_fast_t			*uf_regs;
+	uec_t				*uec_regs;
+	int				num_threads_tx;
+	int				num_threads_rx;
+	u32				utbipar;
+	enet_interface_e		enet_interface;
+	u32				length;
+	u32				align;
+	qe_bd_t				*bd;
+	u8				*buf;
+	int				i;
+
+	if (!uec || !uec->uec_info) {
+		printf("%s: uec or uec_info not initial\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	uec_info = uec->uec_info;
+	uf_info = &(uec_info->uf_info);
+
+	/* Check if Rx BD ring len is illegal */
+	if ((uec_info->rx_bd_ring_len < UEC_RX_BD_RING_SIZE_MIN) || \
+		(uec_info->rx_bd_ring_len % UEC_RX_BD_RING_SIZE_ALIGNMENT)) {
+		printf("%s: Rx BD ring len must be multiple of 4, and > 8.\n",
+			 __FUNCTION__);
+		return -EINVAL;
+	}
+
+	/* Check if Tx BD ring len is illegal */
+	if (uec_info->tx_bd_ring_len < UEC_TX_BD_RING_SIZE_MIN) {
+		printf("%s: Tx BD ring length must not be smaller than 2.\n",
+			 __FUNCTION__);
+		return -EINVAL;
+	}
+
+	/* Check if MRBLR is illegal */
+	if ((MAX_RXBUF_LEN == 0) || (MAX_RXBUF_LEN  % UEC_MRBLR_ALIGNMENT)) {
+		printf("%s: max rx buffer length must be mutliple of 128.\n",
+			 __FUNCTION__);
+		return -EINVAL;
+	}
+
+	/* Both Rx and Tx are stopped */
+	uec->grace_stopped_rx = 1;
+	uec->grace_stopped_tx = 1;
+
+	/* Init UCC fast */
+	if (ucc_fast_init(uf_info, &uccf)) {
+		printf("%s: failed to init ucc fast\n", __FUNCTION__);
+		return -ENOMEM;
+	}
+
+	/* Save uccf */
+	uec->uccf = uccf;
+
+	/* Convert the Tx threads number */
+	if (uec_convert_threads_num(uec_info->num_threads_tx,
+					 &num_threads_tx)) {
+		return -EINVAL;
+	}
+
+	/* Convert the Rx threads number */
+	if (uec_convert_threads_num(uec_info->num_threads_rx,
+					 &num_threads_rx)) {
+		return -EINVAL;
+	}
+
+	uf_regs = uccf->uf_regs;
+
+	/* UEC register is following UCC fast registers */
+	uec_regs = (uec_t *)(&uf_regs->ucc_eth);
+
+	/* Save the UEC register pointer to UEC private struct */
+	uec->uec_regs = uec_regs;
+
+	/* Init UPSMR, enable hardware statistics (UCC) */
+	out_be32(&uec->uccf->uf_regs->upsmr, UPSMR_INIT_VALUE);
+
+	/* Init MACCFG1, flow control disable, disable Tx and Rx */
+	out_be32(&uec_regs->maccfg1, MACCFG1_INIT_VALUE);
+
+	/* Init MACCFG2, length check, MAC PAD and CRC enable */
+	out_be32(&uec_regs->maccfg2, MACCFG2_INIT_VALUE);
+
+	/* Setup MAC interface mode */
+	uec_set_mac_if_mode(uec, uec_info->enet_interface);
+
+	/* Setup MII master clock source */
+	qe_set_mii_clk_src(uec_info->uf_info.ucc_num);
+
+	/* Setup UTBIPAR */
+	utbipar = in_be32(&uec_regs->utbipar);
+	utbipar &= ~UTBIPAR_PHY_ADDRESS_MASK;
+	enet_interface = uec->uec_info->enet_interface;
+	if (enet_interface == ENET_1000_TBI ||
+		 enet_interface == ENET_1000_RTBI) {
+		utbipar |=  (uec_info->phy_address + uec_info->uf_info.ucc_num)
+						 << UTBIPAR_PHY_ADDRESS_SHIFT;
+	} else {
+		utbipar |=  (0x10 + uec_info->uf_info.ucc_num)
+						 << UTBIPAR_PHY_ADDRESS_SHIFT;
+	}
+
+	out_be32(&uec_regs->utbipar, utbipar);
+
+	/* Allocate Tx BDs */
+	length = ((uec_info->tx_bd_ring_len * SIZEOFBD) /
+		 UEC_TX_BD_RING_SIZE_MEMORY_ALIGNMENT) *
+		 UEC_TX_BD_RING_SIZE_MEMORY_ALIGNMENT;
+	if ((uec_info->tx_bd_ring_len * SIZEOFBD) %
+		 UEC_TX_BD_RING_SIZE_MEMORY_ALIGNMENT) {
+		length += UEC_TX_BD_RING_SIZE_MEMORY_ALIGNMENT;
+	}
+
+	align = UEC_TX_BD_RING_ALIGNMENT;
+	uec->tx_bd_ring_offset = (u32)malloc((u32)(length + align));
+	if (uec->tx_bd_ring_offset != 0) {
+		uec->p_tx_bd_ring = (u8 *)((uec->tx_bd_ring_offset + align)
+						 & ~(align - 1));
+	}
+
+	/* Zero all of Tx BDs */
+	memset((void *)(uec->tx_bd_ring_offset), 0, length + align);
+
+	/* Allocate Rx BDs */
+	length = uec_info->rx_bd_ring_len * SIZEOFBD;
+	align = UEC_RX_BD_RING_ALIGNMENT;
+	uec->rx_bd_ring_offset = (u32)(malloc((u32)(length + align)));
+	if (uec->rx_bd_ring_offset != 0) {
+		uec->p_rx_bd_ring = (u8 *)((uec->rx_bd_ring_offset + align)
+							 & ~(align - 1));
+	}
+
+	/* Zero all of Rx BDs */
+	memset((void *)(uec->rx_bd_ring_offset), 0, length + align);
+
+	/* Allocate Rx buffer */
+	length = uec_info->rx_bd_ring_len * MAX_RXBUF_LEN;
+	align = UEC_RX_DATA_BUF_ALIGNMENT;
+	uec->rx_buf_offset = (u32)malloc(length + align);
+	if (uec->rx_buf_offset != 0) {
+		uec->p_rx_buf = (u8 *)((uec->rx_buf_offset + align)
+						 & ~(align - 1));
+	}
+
+	/* Zero all of the Rx buffer */
+	memset((void *)(uec->rx_buf_offset), 0, length + align);
+
+	/* Init TxBD ring */
+	bd = (qe_bd_t *)uec->p_tx_bd_ring;
+	uec->txBd = bd;
+
+	for (i = 0; i < uec_info->tx_bd_ring_len; i++) {
+		BD_DATA_CLEAR(bd);
+		BD_STATUS_SET(bd, 0);
+		BD_LENGTH_SET(bd, 0);
+		bd ++;
+	}
+	BD_STATUS_SET((--bd), TxBD_WRAP);
+
+	/* Init RxBD ring */
+	bd = (qe_bd_t *)uec->p_rx_bd_ring;
+	uec->rxBd = bd;
+	buf = uec->p_rx_buf;
+	for (i = 0; i < uec_info->rx_bd_ring_len; i++) {
+		BD_DATA_SET(bd, buf);
+		BD_LENGTH_SET(bd, 0);
+		BD_STATUS_SET(bd, RxBD_EMPTY);
+		buf += MAX_RXBUF_LEN;
+		bd ++;
+	}
+	BD_STATUS_SET((--bd), RxBD_WRAP | RxBD_EMPTY);
+
+	/* Init global Tx parameter RAM */
+	uec_init_tx_parameter(uec, num_threads_tx);
+
+	/* Init global Rx parameter RAM */
+	uec_init_rx_parameter(uec, num_threads_rx);
+
+	/* Init ethernet Tx and Rx parameter command */
+	if (uec_issue_init_enet_rxtx_cmd(uec, num_threads_tx,
+					 num_threads_rx)) {
+		printf("%s issue init enet cmd failed\n", __FUNCTION__);
+		return -ENOMEM;
+	}
+
+	return 0;
+}
+
+static int uec_init(struct eth_device* dev, bd_t *bd)
+{
+	uec_private_t		*uec;
+	int			err;
+
+	uec = (uec_private_t *)dev->priv;
+
+	if (uec->the_first_run == 0) {
+		/* Set up the MAC address */
+		if (dev->enetaddr[0] & 0x01) {
+			printf("%s: MacAddress is multcast address\n",
+				 __FUNCTION__);
+			return -EINVAL;
+		}
+		uec_set_mac_address(uec, dev->enetaddr);
+		uec->the_first_run = 1;
+	}
+
+	err = uec_open(uec, COMM_DIR_RX_AND_TX);
+	if (err) {
+		printf("%s: cannot enable UEC device\n", dev->name);
+		return err;
+	}
+
+	return 0;
+}
+
+static void uec_halt(struct eth_device* dev)
+{
+	uec_private_t	*uec = (uec_private_t *)dev->priv;
+	uec_stop(uec, COMM_DIR_RX_AND_TX);
+}
+
+static int uec_send(struct eth_device* dev, volatile void *buf, int len)
+{
+	uec_private_t		*uec;
+	ucc_fast_private_t	*uccf;
+	volatile qe_bd_t	*bd;
+	volatile u16		status;
+	int			i;
+	int			result = 0;
+
+	uec = (uec_private_t *)dev->priv;
+	uccf = uec->uccf;
+	bd = uec->txBd;
+
+	/* Find an empty TxBD */
+	for (i = 0; BD_STATUS(bd) & TxBD_READY; i++) {
+		if (i > 0x100000) {
+			printf("%s: tx buffer not ready\n", dev->name);
+			return result;
+		}
+	}
+
+	/* Init TxBD */
+	BD_DATA_SET(bd, buf);
+	BD_LENGTH_SET(bd, len);
+	status = BD_STATUS(bd);
+	status &= BD_WRAP;
+	status |= (TxBD_READY | TxBD_LAST);
+	BD_STATUS_SET(bd, status);
+
+	/* Tell UCC to transmit the buffer */
+	ucc_fast_transmit_on_demand(uccf);
+
+	/* Wait for buffer to be transmitted */
+	status = BD_STATUS(bd);
+	for (i = 0; status & TxBD_READY; i++) {
+		if (i > 0x100000) {
+			printf("%s: tx error\n", dev->name);
+			return result;
+		}
+		status = BD_STATUS(bd);
+	}
+
+	/* Ok, the buffer be transimitted */
+	BD_ADVANCE(bd, status, uec->p_tx_bd_ring);
+	uec->txBd = bd;
+	result = 1;
+
+	return result;
+}
+
+static int uec_recv(struct eth_device* dev)
+{
+	uec_private_t		*uec = dev->priv;
+	volatile qe_bd_t	*bd;
+	volatile u16		status;
+	u16			len;
+	u8			*data;
+
+	bd = uec->rxBd;
+	status = BD_STATUS(bd);
+
+	while (!(status & RxBD_EMPTY)) {
+		if (!(status & RxBD_ERROR)) {
+			data = BD_DATA(bd);
+			len = BD_LENGTH(bd);
+			NetReceive(data, len);
+		} else {
+			printf("%s: Rx error\n", dev->name);
+		}
+		status &= BD_CLEAN;
+		BD_LENGTH_SET(bd, 0);
+		BD_STATUS_SET(bd, status | RxBD_EMPTY);
+		BD_ADVANCE(bd, status, uec->p_rx_bd_ring);
+		status = BD_STATUS(bd);
+	}
+	uec->rxBd = bd;
+
+	return 1;
+}
+
+int uec_initialize(int index)
+{
+	struct eth_device	*dev;
+	int			i;
+	uec_private_t		*uec;
+	uec_info_t		*uec_info;
+	int			err;
+
+	dev = (struct eth_device *)malloc(sizeof(struct eth_device));
+	if (!dev)
+		return 0;
+	memset(dev, 0, sizeof(struct eth_device));
+
+	/* Allocate the UEC private struct */
+	uec = (uec_private_t *)malloc(sizeof(uec_private_t));
+	if (!uec) {
+		return -ENOMEM;
+	}
+	memset(uec, 0, sizeof(uec_private_t));
+
+	/* Init UEC private struct, they come from board.h */
+	if (index == 0) {
+#ifdef CONFIG_UEC_ETH1
+		uec_info = &eth1_uec_info;
+#endif
+	} else if (index == 1) {
+#ifdef CONFIG_UEC_ETH2
+		uec_info = &eth2_uec_info;
+#endif
+	} else {
+		printf("%s: index is illegal.\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	uec->uec_info = uec_info;
+
+	sprintf(dev->name, "FSL UEC%d", index);
+	dev->iobase = 0;
+	dev->priv = (void *)uec;
+	dev->init = uec_init;
+	dev->halt = uec_halt;
+	dev->send = uec_send;
+	dev->recv = uec_recv;
+
+	/* Clear the ethnet address */
+	for (i = 0; i < 6; i++)
+		dev->enetaddr[i] = 0;
+
+	eth_register(dev);
+
+	err = uec_startup(uec);
+	if (err) {
+		printf("%s: Cannot configure net device, aborting.",dev->name);
+		return err;
+	}
+
+	err = init_phy(dev);
+	if (err) {
+		printf("%s: Cannot initialize PHY, aborting.\n", dev->name);
+		return err;
+	}
+
+	phy_change(dev);
+
+	return 1;
+}
+#endif /* CONFIG_QE */