Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

16 files changed, 2516 insertions, 0 deletions

diff --git a/drivers/net/ixp2000/Kconfig b/drivers/net/ixp2000/Kconfig
new file mode 100644
index 00000000000..2fec2415651
--- /dev/null
+++ b/drivers/net/ixp2000/Kconfig
@@ -0,0 +1,6 @@
+config ENP2611_MSF_NET
+	tristate "Radisys ENP2611 MSF network interface support"
+	depends on ARCH_ENP2611
+	help
+	  This is a driver for the MSF network interface unit in
+	  the IXP2400 on the Radisys ENP2611 platform.
diff --git a/drivers/net/ixp2000/Makefile b/drivers/net/ixp2000/Makefile
new file mode 100644
index 00000000000..fd38351ceaa
--- /dev/null
+++ b/drivers/net/ixp2000/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_ENP2611_MSF_NET) += enp2611_mod.o
+
+enp2611_mod-objs := caleb.o enp2611.o ixp2400-msf.o ixpdev.o pm3386.o
diff --git a/drivers/net/ixp2000/caleb.c b/drivers/net/ixp2000/caleb.c
new file mode 100644
index 00000000000..3595e107df2
--- /dev/null
+++ b/drivers/net/ixp2000/caleb.c
@@ -0,0 +1,137 @@
+/*
+ * Helper functions for the SPI-3 bridge FPGA on the Radisys ENP2611
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+#include "caleb.h"
+
+#define CALEB_IDLO		0x00
+#define CALEB_IDHI		0x01
+#define CALEB_RID		0x02
+#define CALEB_RESET		0x03
+#define CALEB_INTREN0		0x04
+#define CALEB_INTREN1		0x05
+#define CALEB_INTRSTAT0		0x06
+#define CALEB_INTRSTAT1		0x07
+#define CALEB_PORTEN		0x08
+#define CALEB_BURST		0x09
+#define CALEB_PORTPAUS		0x0A
+#define CALEB_PORTPAUSD		0x0B
+#define CALEB_PHY0RX		0x10
+#define CALEB_PHY1RX		0x11
+#define CALEB_PHY0TX		0x12
+#define CALEB_PHY1TX		0x13
+#define CALEB_IXPRX_HI_CNTR	0x15
+#define CALEB_PHY0RX_HI_CNTR	0x16
+#define CALEB_PHY1RX_HI_CNTR	0x17
+#define CALEB_IXPRX_CNTR	0x18
+#define CALEB_PHY0RX_CNTR	0x19
+#define CALEB_PHY1RX_CNTR	0x1A
+#define CALEB_IXPTX_CNTR	0x1B
+#define CALEB_PHY0TX_CNTR	0x1C
+#define CALEB_PHY1TX_CNTR	0x1D
+#define CALEB_DEBUG0		0x1E
+#define CALEB_DEBUG1		0x1F
+
+
+static u8 caleb_reg_read(int reg)
+{
+	u8 value;
+
+	value = *((volatile u8 *)(ENP2611_CALEB_VIRT_BASE + reg));
+
+//	printk(KERN_INFO "caleb_reg_read(%d) = %.2x\n", reg, value);
+
+	return value;
+}
+
+static void caleb_reg_write(int reg, u8 value)
+{
+	u8 dummy;
+
+//	printk(KERN_INFO "caleb_reg_write(%d, %.2x)\n", reg, value);
+
+	*((volatile u8 *)(ENP2611_CALEB_VIRT_BASE + reg)) = value;
+
+	dummy = *((volatile u8 *)ENP2611_CALEB_VIRT_BASE);
+	__asm__ __volatile__("mov %0, %0" : "+r" (dummy));
+}
+
+
+void caleb_reset(void)
+{
+	/*
+	 * Perform a chip reset.
+	 */
+	caleb_reg_write(CALEB_RESET, 0x02);
+	udelay(1);
+
+	/*
+	 * Enable all interrupt sources.  This is needed to get
+	 * meaningful results out of the status bits (register 6
+	 * and 7.)
+	 */
+	caleb_reg_write(CALEB_INTREN0, 0xff);
+	caleb_reg_write(CALEB_INTREN1, 0x07);
+
+	/*
+	 * Set RX and TX FIFO thresholds to 1.5kb.
+	 */
+	caleb_reg_write(CALEB_PHY0RX, 0x11);
+	caleb_reg_write(CALEB_PHY1RX, 0x11);
+	caleb_reg_write(CALEB_PHY0TX, 0x11);
+	caleb_reg_write(CALEB_PHY1TX, 0x11);
+
+	/*
+	 * Program SPI-3 burst size.
+	 */
+	caleb_reg_write(CALEB_BURST, 0);	// 64-byte RBUF mpackets
+//	caleb_reg_write(CALEB_BURST, 1);	// 128-byte RBUF mpackets
+//	caleb_reg_write(CALEB_BURST, 2);	// 256-byte RBUF mpackets
+}
+
+void caleb_enable_rx(int port)
+{
+	u8 temp;
+
+	temp = caleb_reg_read(CALEB_PORTEN);
+	temp |= 1 << port;
+	caleb_reg_write(CALEB_PORTEN, temp);
+}
+
+void caleb_disable_rx(int port)
+{
+	u8 temp;
+
+	temp = caleb_reg_read(CALEB_PORTEN);
+	temp &= ~(1 << port);
+	caleb_reg_write(CALEB_PORTEN, temp);
+}
+
+void caleb_enable_tx(int port)
+{
+	u8 temp;
+
+	temp = caleb_reg_read(CALEB_PORTEN);
+	temp |= 1 << (port + 4);
+	caleb_reg_write(CALEB_PORTEN, temp);
+}
+
+void caleb_disable_tx(int port)
+{
+	u8 temp;
+
+	temp = caleb_reg_read(CALEB_PORTEN);
+	temp &= ~(1 << (port + 4));
+	caleb_reg_write(CALEB_PORTEN, temp);
+}
diff --git a/drivers/net/ixp2000/caleb.h b/drivers/net/ixp2000/caleb.h
new file mode 100644
index 00000000000..e93a1ef5b8a
--- /dev/null
+++ b/drivers/net/ixp2000/caleb.h
@@ -0,0 +1,22 @@
+/*
+ * Helper functions for the SPI-3 bridge FPGA on the Radisys ENP2611
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ */
+
+#ifndef __CALEB_H
+#define __CALEB_H
+
+void caleb_reset(void);
+void caleb_enable_rx(int port);
+void caleb_disable_rx(int port);
+void caleb_enable_tx(int port);
+void caleb_disable_tx(int port);
+
+
+#endif
diff --git a/drivers/net/ixp2000/enp2611.c b/drivers/net/ixp2000/enp2611.c
new file mode 100644
index 00000000000..d82651a97ba
--- /dev/null
+++ b/drivers/net/ixp2000/enp2611.c
@@ -0,0 +1,245 @@
+/*
+ * IXP2400 MSF network device driver for the Radisys ENP2611
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <asm/arch/uengine.h>
+#include <asm/mach-types.h>
+#include <asm/io.h>
+#include "ixpdev.h"
+#include "caleb.h"
+#include "ixp2400-msf.h"
+#include "pm3386.h"
+
+/***********************************************************************
+ * The Radisys ENP2611 is a PCI form factor board with three SFP GBIC
+ * slots, connected via two PMC/Sierra 3386s and an SPI-3 bridge FPGA
+ * to the IXP2400.
+ *
+ *                +-------------+
+ * SFP GBIC #0 ---+             |       +---------+
+ *                |  PM3386 #0  +-------+         |
+ * SFP GBIC #1 ---+             |       | "Caleb" |         +---------+
+ *                +-------------+       |         |         |         |
+ *                                      | SPI-3   +---------+ IXP2400 |
+ *                +-------------+       | bridge  |         |         |
+ * SFP GBIC #2 ---+             |       | FPGA    |         +---------+
+ *                |  PM3386 #1  +-------+         |
+ *                |             |       +---------+
+ *                +-------------+
+ *              ^                   ^                  ^
+ *              | 1.25Gbaud         | 104MHz           | 104MHz
+ *              | SERDES ea.        | SPI-3 ea.        | SPI-3
+ *
+ ***********************************************************************/
+static struct ixp2400_msf_parameters enp2611_msf_parameters =
+{
+	.rx_mode =		IXP2400_RX_MODE_UTOPIA_POS |
+				IXP2400_RX_MODE_1x32 |
+				IXP2400_RX_MODE_MPHY |
+				IXP2400_RX_MODE_MPHY_32 |
+				IXP2400_RX_MODE_MPHY_POLLED_STATUS |
+				IXP2400_RX_MODE_MPHY_LEVEL3 |
+				IXP2400_RX_MODE_RBUF_SIZE_64,
+
+	.rxclk01_multiplier =	IXP2400_PLL_MULTIPLIER_16,
+
+	.rx_poll_ports =	3,
+
+	.rx_channel_mode = {
+		IXP2400_PORT_RX_MODE_MASTER |
+		IXP2400_PORT_RX_MODE_POS_PHY |
+		IXP2400_PORT_RX_MODE_POS_PHY_L3 |
+		IXP2400_PORT_RX_MODE_ODD_PARITY |
+		IXP2400_PORT_RX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_RX_MODE_MASTER |
+		IXP2400_PORT_RX_MODE_POS_PHY |
+		IXP2400_PORT_RX_MODE_POS_PHY_L3 |
+		IXP2400_PORT_RX_MODE_ODD_PARITY |
+		IXP2400_PORT_RX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_RX_MODE_MASTER |
+		IXP2400_PORT_RX_MODE_POS_PHY |
+		IXP2400_PORT_RX_MODE_POS_PHY_L3 |
+		IXP2400_PORT_RX_MODE_ODD_PARITY |
+		IXP2400_PORT_RX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_RX_MODE_MASTER |
+		IXP2400_PORT_RX_MODE_POS_PHY |
+		IXP2400_PORT_RX_MODE_POS_PHY_L3 |
+		IXP2400_PORT_RX_MODE_ODD_PARITY |
+		IXP2400_PORT_RX_MODE_2_CYCLE_DECODE
+	},
+
+	.tx_mode =		IXP2400_TX_MODE_UTOPIA_POS |
+				IXP2400_TX_MODE_1x32 |
+				IXP2400_TX_MODE_MPHY |
+				IXP2400_TX_MODE_MPHY_32 |
+				IXP2400_TX_MODE_MPHY_POLLED_STATUS |
+				IXP2400_TX_MODE_MPHY_LEVEL3 |
+				IXP2400_TX_MODE_TBUF_SIZE_64,
+
+	.txclk01_multiplier =	IXP2400_PLL_MULTIPLIER_16,
+
+	.tx_poll_ports =	3,
+
+	.tx_channel_mode = {
+		IXP2400_PORT_TX_MODE_MASTER |
+		IXP2400_PORT_TX_MODE_POS_PHY |
+		IXP2400_PORT_TX_MODE_ODD_PARITY |
+		IXP2400_PORT_TX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_TX_MODE_MASTER |
+		IXP2400_PORT_TX_MODE_POS_PHY |
+		IXP2400_PORT_TX_MODE_ODD_PARITY |
+		IXP2400_PORT_TX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_TX_MODE_MASTER |
+		IXP2400_PORT_TX_MODE_POS_PHY |
+		IXP2400_PORT_TX_MODE_ODD_PARITY |
+		IXP2400_PORT_TX_MODE_2_CYCLE_DECODE,
+
+		IXP2400_PORT_TX_MODE_MASTER |
+		IXP2400_PORT_TX_MODE_POS_PHY |
+		IXP2400_PORT_TX_MODE_ODD_PARITY |
+		IXP2400_PORT_TX_MODE_2_CYCLE_DECODE
+	}
+};
+
+struct enp2611_ixpdev_priv
+{
+	struct ixpdev_priv		ixpdev_priv;
+	struct net_device_stats		stats;
+};
+
+static struct net_device *nds[3];
+static struct timer_list link_check_timer;
+
+static struct net_device_stats *enp2611_get_stats(struct net_device *dev)
+{
+	struct enp2611_ixpdev_priv *ip = netdev_priv(dev);
+
+	pm3386_get_stats(ip->ixpdev_priv.channel, &(ip->stats));
+
+	return &(ip->stats);
+}
+
+/* @@@ Poll the SFP moddef0 line too.  */
+/* @@@ Try to use the pm3386 DOOL interrupt as well.  */
+static void enp2611_check_link_status(unsigned long __dummy)
+{
+	int i;
+
+	for (i = 0; i < 3; i++) {
+		struct net_device *dev;
+		int status;
+
+		dev = nds[i];
+
+		status = pm3386_is_link_up(i);
+		if (status && !netif_carrier_ok(dev)) {
+			/* @@@ Should report autonegotiation status.  */
+			printk(KERN_INFO "%s: NIC Link is Up\n", dev->name);
+
+			pm3386_enable_tx(i);
+			caleb_enable_tx(i);
+			netif_carrier_on(dev);
+		} else if (!status && netif_carrier_ok(dev)) {
+			printk(KERN_INFO "%s: NIC Link is Down\n", dev->name);
+
+			netif_carrier_off(dev);
+			caleb_disable_tx(i);
+			pm3386_disable_tx(i);
+		}
+	}
+
+	link_check_timer.expires = jiffies + HZ / 10;
+	add_timer(&link_check_timer);
+}
+
+static void enp2611_set_port_admin_status(int port, int up)
+{
+	if (up) {
+		caleb_enable_rx(port);
+
+		pm3386_set_carrier(port, 1);
+		pm3386_enable_rx(port);
+	} else {
+		caleb_disable_tx(port);
+		pm3386_disable_tx(port);
+		/* @@@ Flush out pending packets.  */
+		pm3386_set_carrier(port, 0);
+
+		pm3386_disable_rx(port);
+		caleb_disable_rx(port);
+	}
+}
+
+static int __init enp2611_init_module(void)
+{ 
+	int i;
+
+	if (!machine_is_enp2611())
+		return -ENODEV;
+
+	caleb_reset();
+	pm3386_reset();
+
+	for (i = 0; i < 3; i++) {
+		nds[i] = ixpdev_alloc(i, sizeof(struct enp2611_ixpdev_priv));
+		if (nds[i] == NULL) {
+			while (--i >= 0)
+				free_netdev(nds[i]);
+			return -ENOMEM;
+		}
+
+		SET_MODULE_OWNER(nds[i]);
+		nds[i]->get_stats = enp2611_get_stats;
+		pm3386_init_port(i);
+		pm3386_get_mac(i, nds[i]->dev_addr);
+	}
+
+	ixp2400_msf_init(&enp2611_msf_parameters);
+
+	if (ixpdev_init(3, nds, enp2611_set_port_admin_status)) {
+		for (i = 0; i < 3; i++)
+			free_netdev(nds[i]);
+		return -EINVAL;
+	}
+
+	init_timer(&link_check_timer);
+	link_check_timer.function = enp2611_check_link_status;
+	link_check_timer.expires = jiffies;
+	add_timer(&link_check_timer);
+
+	return 0;
+}
+
+static void __exit enp2611_cleanup_module(void)
+{
+	int i;
+
+	del_timer_sync(&link_check_timer);
+
+	ixpdev_deinit();
+	for (i = 0; i < 3; i++)
+		free_netdev(nds[i]);
+}
+
+module_init(enp2611_init_module);
+module_exit(enp2611_cleanup_module);
+MODULE_LICENSE("GPL");
diff --git a/drivers/net/ixp2000/ixp2400-msf.c b/drivers/net/ixp2000/ixp2400-msf.c
new file mode 100644
index 00000000000..48a3a891d3a
--- /dev/null
+++ b/drivers/net/ixp2000/ixp2400-msf.c
@@ -0,0 +1,213 @@
+/*
+ * Generic library functions for the MSF (Media and Switch Fabric) unit
+ * found on the Intel IXP2400 network processor.
+ *
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of the
+ * License, or (at your option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/hardware.h>
+#include <asm/arch/ixp2000-regs.h>
+#include <asm/delay.h>
+#include <asm/io.h>
+#include "ixp2400-msf.h"
+
+/*
+ * This is the Intel recommended PLL init procedure as described on
+ * page 340 of the IXP2400/IXP2800 Programmer's Reference Manual.
+ */
+static void ixp2400_pll_init(struct ixp2400_msf_parameters *mp)
+{
+	int rx_dual_clock;
+	int tx_dual_clock;
+	u32 value;
+
+	/*
+	 * If the RX mode is not 1x32, we have to enable both RX PLLs
+	 * (#0 and #1.)  The same thing for the TX direction.
+	 */
+	rx_dual_clock = !!(mp->rx_mode & IXP2400_RX_MODE_WIDTH_MASK);
+	tx_dual_clock = !!(mp->tx_mode & IXP2400_TX_MODE_WIDTH_MASK);
+
+	/*
+	 * Read initial value.
+	 */
+	value = ixp2000_reg_read(IXP2000_MSF_CLK_CNTRL);
+
+	/*
+	 * Put PLLs in powerdown and bypass mode.
+	 */
+	value |= 0x0000f0f0;
+	ixp2000_reg_write(IXP2000_MSF_CLK_CNTRL, value);
+
+	/*
+	 * Set single or dual clock mode bits.
+	 */
+	value &= ~0x03000000;
+	value |= (rx_dual_clock << 24) | (tx_dual_clock << 25);
+
+	/*
+	 * Set multipliers.
+	 */
+	value &= ~0x00ff0000;
+	value |= mp->rxclk01_multiplier << 16;
+	value |= mp->rxclk23_multiplier << 18;
+	value |= mp->txclk01_multiplier << 20;
+	value |= mp->txclk23_multiplier << 22;
+
+	/*
+	 * And write value.
+	 */
+	ixp2000_reg_write(IXP2000_MSF_CLK_CNTRL, value);
+
+	/*
+	 * Disable PLL bypass mode.
+	 */
+	value &= ~(0x00005000 | rx_dual_clock << 13 | tx_dual_clock << 15);
+	ixp2000_reg_write(IXP2000_MSF_CLK_CNTRL, value);
+
+	/*
+	 * Turn on PLLs.
+	 */
+	value &= ~(0x00000050 | rx_dual_clock << 5 | tx_dual_clock << 7);
+	ixp2000_reg_write(IXP2000_MSF_CLK_CNTRL, value);
+
+	/*
+	 * Wait for PLLs to lock.  There are lock status bits, but IXP2400
+	 * erratum #65 says that these lock bits should not be relied upon
+	 * as they might not accurately reflect the true state of the PLLs.
+	 */
+	udelay(100);
+}
+
+/*
+ * Needed according to p480 of Programmer's Reference Manual.
+ */
+static void ixp2400_msf_free_rbuf_entries(struct ixp2400_msf_parameters *mp)
+{
+	int size_bits;
+	int i;
+
+	/*
+	 * Work around IXP2400 erratum #69 (silent RBUF-to-DRAM transfer
+	 * corruption) in the Intel-recommended way: do not add the RBUF
+	 * elements susceptible to corruption to the freelist.
+	 */
+	size_bits = mp->rx_mode & IXP2400_RX_MODE_RBUF_SIZE_MASK;
+	if (size_bits == IXP2400_RX_MODE_RBUF_SIZE_64) {
+		for (i = 1; i < 128; i++) {
+			if (i == 9 || i == 18 || i == 27)
+				continue;
+			ixp2000_reg_write(IXP2000_MSF_RBUF_ELEMENT_DONE, i);
+		}
+	} else if (size_bits == IXP2400_RX_MODE_RBUF_SIZE_128) {
+		for (i = 1; i < 64; i++) {
+			if (i == 4 || i == 9 || i == 13)
+				continue;
+			ixp2000_reg_write(IXP2000_MSF_RBUF_ELEMENT_DONE, i);
+		}
+	} else if (size_bits == IXP2400_RX_MODE_RBUF_SIZE_256) {
+		for (i = 1; i < 32; i++) {
+			if (i == 2 || i == 4 || i == 6)
+				continue;
+			ixp2000_reg_write(IXP2000_MSF_RBUF_ELEMENT_DONE, i);
+		}
+	}
+}
+
+static u32 ixp2400_msf_valid_channels(u32 reg)
+{
+	u32 channels;
+
+	channels = 0;
+	switch (reg & IXP2400_RX_MODE_WIDTH_MASK) {
+	case IXP2400_RX_MODE_1x32:
+		channels = 0x1;
+		if (reg & IXP2400_RX_MODE_MPHY &&
+		    !(reg & IXP2400_RX_MODE_MPHY_32))
+			channels = 0xf;
+		break;
+
+	case IXP2400_RX_MODE_2x16:
+		channels = 0x5;
+		break;
+
+	case IXP2400_RX_MODE_4x8:
+		channels = 0xf;
+		break;
+
+	case IXP2400_RX_MODE_1x16_2x8:
+		channels = 0xd;
+		break;
+	}
+
+	return channels;
+}
+
+static void ixp2400_msf_enable_rx(struct ixp2400_msf_parameters *mp)
+{
+	u32 value;
+
+	value = ixp2000_reg_read(IXP2000_MSF_RX_CONTROL) & 0x0fffffff;
+	value |= ixp2400_msf_valid_channels(mp->rx_mode) << 28;
+	ixp2000_reg_write(IXP2000_MSF_RX_CONTROL, value);
+}
+
+static void ixp2400_msf_enable_tx(struct ixp2400_msf_parameters *mp)
+{
+	u32 value;
+
+	value = ixp2000_reg_read(IXP2000_MSF_TX_CONTROL) & 0x0fffffff;
+	value |= ixp2400_msf_valid_channels(mp->tx_mode) << 28;
+	ixp2000_reg_write(IXP2000_MSF_TX_CONTROL, value);
+}
+
+
+void ixp2400_msf_init(struct ixp2400_msf_parameters *mp)
+{
+	u32 value;
+	int i;
+
+	/*
+	 * Init the RX/TX PLLs based on the passed parameter block.
+	 */
+	ixp2400_pll_init(mp);
+
+	/*
+	 * Reset MSF.  Bit 7 in IXP_RESET_0 resets the MSF.
+	 */
+	value = ixp2000_reg_read(IXP2000_RESET0);
+	ixp2000_reg_write(IXP2000_RESET0, value | 0x80);
+	ixp2000_reg_write(IXP2000_RESET0, value & ~0x80);
+
+	/*
+	 * Initialise the RX section.
+	 */
+	ixp2000_reg_write(IXP2000_MSF_RX_MPHY_POLL_LIMIT, mp->rx_poll_ports - 1);
+	ixp2000_reg_write(IXP2000_MSF_RX_CONTROL, mp->rx_mode);
+	for (i = 0; i < 4; i++) {
+		ixp2000_reg_write(IXP2000_MSF_RX_UP_CONTROL_0 + i,
+						mp->rx_channel_mode[i]);
+	}
+	ixp2400_msf_free_rbuf_entries(mp);
+	ixp2400_msf_enable_rx(mp);
+
+	/*
+	 * Initialise the TX section.
+	 */
+	ixp2000_reg_write(IXP2000_MSF_TX_MPHY_POLL_LIMIT, mp->tx_poll_ports - 1);
+	ixp2000_reg_write(IXP2000_MSF_TX_CONTROL, mp->tx_mode);
+	for (i = 0; i < 4; i++) {
+		ixp2000_reg_write(IXP2000_MSF_TX_UP_CONTROL_0 + i,
+						mp->tx_channel_mode[i]);
+	}
+	ixp2400_msf_enable_tx(mp);
+}
diff --git a/drivers/net/ixp2000/ixp2400-msf.h b/drivers/net/ixp2000/ixp2400-msf.h
new file mode 100644
index 00000000000..3ac1af2771d
--- /dev/null
+++ b/drivers/net/ixp2000/ixp2400-msf.h
@@ -0,0 +1,115 @@
+/*
+ * Generic library functions for the MSF (Media and Switch Fabric) unit
+ * found on the Intel IXP2400 network processor.
+ *
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of the
+ * License, or (at your option) any later version.
+ */
+
+#ifndef __IXP2400_MSF_H
+#define __IXP2400_MSF_H
+
+struct ixp2400_msf_parameters
+{
+	u32				rx_mode;
+	unsigned			rxclk01_multiplier:2;
+	unsigned			rxclk23_multiplier:2;
+	unsigned			rx_poll_ports:6;
+	u32				rx_channel_mode[4];
+
+	u32				tx_mode;
+	unsigned			txclk01_multiplier:2;
+	unsigned			txclk23_multiplier:2;
+	unsigned			tx_poll_ports:6;
+	u32				tx_channel_mode[4];
+};
+
+void ixp2400_msf_init(struct ixp2400_msf_parameters *mp);
+
+#define IXP2400_PLL_MULTIPLIER_48		0x00
+#define IXP2400_PLL_MULTIPLIER_24		0x01
+#define IXP2400_PLL_MULTIPLIER_16		0x02
+#define IXP2400_PLL_MULTIPLIER_12		0x03
+
+#define IXP2400_RX_MODE_CSIX			0x00400000
+#define IXP2400_RX_MODE_UTOPIA_POS		0x00000000
+#define IXP2400_RX_MODE_WIDTH_MASK		0x00300000
+#define IXP2400_RX_MODE_1x16_2x8		0x00300000
+#define IXP2400_RX_MODE_4x8			0x00200000
+#define IXP2400_RX_MODE_2x16			0x00100000
+#define IXP2400_RX_MODE_1x32			0x00000000
+#define IXP2400_RX_MODE_MPHY			0x00080000
+#define IXP2400_RX_MODE_SPHY			0x00000000
+#define IXP2400_RX_MODE_MPHY_32			0x00040000
+#define IXP2400_RX_MODE_MPHY_4			0x00000000
+#define IXP2400_RX_MODE_MPHY_POLLED_STATUS	0x00020000
+#define IXP2400_RX_MODE_MPHY_DIRECT_STATUS	0x00000000
+#define IXP2400_RX_MODE_CBUS_FULL_DUPLEX	0x00010000
+#define IXP2400_RX_MODE_CBUS_SIMPLEX		0x00000000
+#define IXP2400_RX_MODE_MPHY_LEVEL2		0x00004000
+#define IXP2400_RX_MODE_MPHY_LEVEL3		0x00000000
+#define IXP2400_RX_MODE_CBUS_8BIT		0x00002000
+#define IXP2400_RX_MODE_CBUS_4BIT		0x00000000
+#define IXP2400_RX_MODE_CSIX_SINGLE_FREELIST	0x00000200
+#define IXP2400_RX_MODE_CSIX_SPLIT_FREELISTS	0x00000000
+#define IXP2400_RX_MODE_RBUF_SIZE_MASK		0x0000000c
+#define IXP2400_RX_MODE_RBUF_SIZE_256		0x00000008
+#define IXP2400_RX_MODE_RBUF_SIZE_128		0x00000004
+#define IXP2400_RX_MODE_RBUF_SIZE_64		0x00000000
+
+#define IXP2400_PORT_RX_MODE_SLAVE		0x00000040
+#define IXP2400_PORT_RX_MODE_MASTER		0x00000000
+#define IXP2400_PORT_RX_MODE_POS_PHY_L3		0x00000020
+#define IXP2400_PORT_RX_MODE_POS_PHY_L2		0x00000000
+#define IXP2400_PORT_RX_MODE_POS_PHY		0x00000010
+#define IXP2400_PORT_RX_MODE_UTOPIA		0x00000000
+#define IXP2400_PORT_RX_MODE_EVEN_PARITY	0x0000000c
+#define IXP2400_PORT_RX_MODE_ODD_PARITY		0x00000008
+#define IXP2400_PORT_RX_MODE_NO_PARITY		0x00000000
+#define IXP2400_PORT_RX_MODE_UTOPIA_BIG_CELLS	0x00000002
+#define IXP2400_PORT_RX_MODE_UTOPIA_NORMAL_CELLS	0x00000000
+#define IXP2400_PORT_RX_MODE_2_CYCLE_DECODE	0x00000001
+#define IXP2400_PORT_RX_MODE_1_CYCLE_DECODE	0x00000000
+
+#define IXP2400_TX_MODE_CSIX			0x00400000
+#define IXP2400_TX_MODE_UTOPIA_POS		0x00000000
+#define IXP2400_TX_MODE_WIDTH_MASK		0x00300000
+#define IXP2400_TX_MODE_1x16_2x8		0x00300000
+#define IXP2400_TX_MODE_4x8			0x00200000
+#define IXP2400_TX_MODE_2x16			0x00100000
+#define IXP2400_TX_MODE_1x32			0x00000000
+#define IXP2400_TX_MODE_MPHY			0x00080000
+#define IXP2400_TX_MODE_SPHY			0x00000000
+#define IXP2400_TX_MODE_MPHY_32			0x00040000
+#define IXP2400_TX_MODE_MPHY_4			0x00000000
+#define IXP2400_TX_MODE_MPHY_POLLED_STATUS	0x00020000
+#define IXP2400_TX_MODE_MPHY_DIRECT_STATUS	0x00000000
+#define IXP2400_TX_MODE_CBUS_FULL_DUPLEX	0x00010000
+#define IXP2400_TX_MODE_CBUS_SIMPLEX		0x00000000
+#define IXP2400_TX_MODE_MPHY_LEVEL2		0x00004000
+#define IXP2400_TX_MODE_MPHY_LEVEL3		0x00000000
+#define IXP2400_TX_MODE_CBUS_8BIT		0x00002000
+#define IXP2400_TX_MODE_CBUS_4BIT		0x00000000
+#define IXP2400_TX_MODE_TBUF_SIZE_MASK		0x0000000c
+#define IXP2400_TX_MODE_TBUF_SIZE_256		0x00000008
+#define IXP2400_TX_MODE_TBUF_SIZE_128		0x00000004
+#define IXP2400_TX_MODE_TBUF_SIZE_64		0x00000000
+
+#define IXP2400_PORT_TX_MODE_SLAVE		0x00000040
+#define IXP2400_PORT_TX_MODE_MASTER		0x00000000
+#define IXP2400_PORT_TX_MODE_POS_PHY		0x00000010
+#define IXP2400_PORT_TX_MODE_UTOPIA		0x00000000
+#define IXP2400_PORT_TX_MODE_EVEN_PARITY	0x0000000c
+#define IXP2400_PORT_TX_MODE_ODD_PARITY		0x00000008
+#define IXP2400_PORT_TX_MODE_NO_PARITY		0x00000000
+#define IXP2400_PORT_TX_MODE_UTOPIA_BIG_CELLS	0x00000002
+#define IXP2400_PORT_TX_MODE_2_CYCLE_DECODE	0x00000001
+#define IXP2400_PORT_TX_MODE_1_CYCLE_DECODE	0x00000000
+
+
+#endif
diff --git a/drivers/net/ixp2000/ixp2400_rx.uc b/drivers/net/ixp2000/ixp2400_rx.uc
new file mode 100644
index 00000000000..42a73e357af
--- /dev/null
+++ b/drivers/net/ixp2000/ixp2400_rx.uc
@@ -0,0 +1,408 @@
+/*
+ * RX ucode for the Intel IXP2400 in POS-PHY mode.
+ * Copyright (C) 2004, 2005 Lennert Buytenhek
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ *
+ * Assumptions made in this code:
+ * - The IXP2400 MSF is configured for POS-PHY mode, in a mode where
+ *   only one full element list is used.  This includes, for example,
+ *   1x32 SPHY and 1x32 MPHY32, but not 4x8 SPHY or 1x32 MPHY4.  (This
+ *   is not an exhaustive list.)
+ * - The RBUF uses 64-byte mpackets.
+ * - RX descriptors reside in SRAM, and have the following format:
+ *	struct rx_desc
+ *	{
+ *	// to uengine
+ *		u32	buf_phys_addr;
+ *		u32	buf_length;
+ *
+ *	// from uengine
+ *		u32	channel;
+ *		u32	pkt_length;
+ *	};
+ * - Packet data resides in DRAM.
+ * - Packet buffer addresses are 8-byte aligned.
+ * - Scratch ring 0 is rx_pending.
+ * - Scratch ring 1 is rx_done, and has status condition 'full'.
+ * - The host triggers rx_done flush and rx_pending refill on seeing INTA.
+ * - This code is run on all eight threads of the microengine it runs on.
+ *
+ * Local memory is used for per-channel RX state.
+ */
+
+#define RX_THREAD_FREELIST_0		0x0030
+#define RBUF_ELEMENT_DONE		0x0044
+
+#define CHANNEL_FLAGS			*l$index0[0]
+#define CHANNEL_FLAG_RECEIVING		1
+#define PACKET_LENGTH			*l$index0[1]
+#define PACKET_CHECKSUM			*l$index0[2]
+#define BUFFER_HANDLE			*l$index0[3]
+#define BUFFER_START			*l$index0[4]
+#define BUFFER_LENGTH			*l$index0[5]
+
+#define CHANNEL_STATE_SIZE		24	// in bytes
+#define CHANNEL_STATE_SHIFT		5	// ceil(log2(state size))
+
+
+	.sig volatile sig1
+	.sig volatile sig2
+	.sig volatile sig3
+
+	.sig mpacket_arrived
+	.reg add_to_rx_freelist
+	.reg read $rsw0, $rsw1
+	.xfer_order $rsw0 $rsw1
+
+	.reg zero
+
+	/*
+	 * Initialise add_to_rx_freelist.
+	 */
+	.begin
+		.reg temp
+		.reg temp2
+
+		immed[add_to_rx_freelist, RX_THREAD_FREELIST_0]
+		immed_w1[add_to_rx_freelist, (&$rsw0 | (&mpacket_arrived << 12))]
+
+		local_csr_rd[ACTIVE_CTX_STS]
+		immed[temp, 0]
+		alu[temp2, temp, and, 0x1f]
+		alu_shf[add_to_rx_freelist, add_to_rx_freelist, or, temp2, <<20]
+		alu[temp2, temp, and, 0x80]
+		alu_shf[add_to_rx_freelist, add_to_rx_freelist, or, temp2, <<18]
+	.end
+
+	immed[zero, 0]
+
+	/*
+	 * Skip context 0 initialisation?
+	 */
+	.begin
+		br!=ctx[0, mpacket_receive_loop#]
+	.end
+
+	/*
+	 * Initialise local memory.
+	 */
+	.begin
+		.reg addr
+		.reg temp
+
+		immed[temp, 0]
+	init_local_mem_loop#:
+		alu_shf[addr, --, b, temp, <<CHANNEL_STATE_SHIFT]
+		local_csr_wr[ACTIVE_LM_ADDR_0, addr]
+		nop
+		nop
+		nop
+
+		immed[CHANNEL_FLAGS, 0]
+
+		alu[temp, temp, +, 1]
+		alu[--, temp, and, 0x20]
+		beq[init_local_mem_loop#]
+	.end
+
+	/*
+	 * Initialise signal pipeline.
+	 */
+	.begin
+		local_csr_wr[SAME_ME_SIGNAL, (&sig1 << 3)]
+		.set_sig sig1
+
+		local_csr_wr[SAME_ME_SIGNAL, (&sig2 << 3)]
+		.set_sig sig2
+
+		local_csr_wr[SAME_ME_SIGNAL, (&sig3 << 3)]
+		.set_sig sig3
+	.end
+
+mpacket_receive_loop#:
+	/*
+	 * Synchronise and wait for mpacket.
+	 */
+	.begin
+		ctx_arb[sig1]
+		local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig1 << 3))]
+
+		msf[fast_wr, --, add_to_rx_freelist, 0]
+		.set_sig mpacket_arrived
+		ctx_arb[mpacket_arrived]
+		.set $rsw0 $rsw1
+	.end
+
+	/*
+	 * We halt if we see {inbparerr,parerr,null,soperror}.
+	 */
+	.begin
+		alu_shf[--, 0x1b, and, $rsw0, >>8]
+		bne[abort_rswerr#]
+	.end
+
+	/*
+	 * Point local memory pointer to this channel's state area.
+	 */
+	.begin
+		.reg chanaddr
+
+		alu[chanaddr, $rsw0, and, 0x1f]
+		alu_shf[chanaddr, --, b, chanaddr, <<CHANNEL_STATE_SHIFT]
+		local_csr_wr[ACTIVE_LM_ADDR_0, chanaddr]
+		nop
+		nop
+		nop
+	.end
+
+	/*
+	 * Check whether we received a SOP mpacket while we were already
+	 * working on a packet, or a non-SOP mpacket while there was no
+	 * packet pending.  (SOP == RECEIVING -> abort)  If everything's
+	 * okay, update the RECEIVING flag to reflect our new state.
+	 */
+	.begin
+		.reg temp
+		.reg eop
+
+		#if CHANNEL_FLAG_RECEIVING != 1
+		#error CHANNEL_FLAG_RECEIVING is not 1
+		#endif
+
+		alu_shf[temp, 1, and, $rsw0, >>15]
+		alu[temp, temp, xor, CHANNEL_FLAGS]
+		alu[--, temp, and, CHANNEL_FLAG_RECEIVING]
+		beq[abort_proterr#]
+
+		alu_shf[eop, 1, and, $rsw0, >>14]
+		alu[CHANNEL_FLAGS, temp, xor, eop]
+	.end
+
+	/*
+	 * Copy the mpacket into the right spot, and in case of EOP,
+	 * write back the descriptor and pass the packet on.
+	 */
+	.begin
+		.reg buffer_offset
+		.reg _packet_length
+		.reg _packet_checksum
+		.reg _buffer_handle
+		.reg _buffer_start
+		.reg _buffer_length
+
+		/*
+		 * Determine buffer_offset, _packet_length and
+		 * _packet_checksum.
+		 */
+		.begin
+			.reg temp
+
+			alu[--, 1, and, $rsw0, >>15]
+			beq[not_sop#]
+
+			immed[PACKET_LENGTH, 0]
+			immed[PACKET_CHECKSUM, 0]
+
+		not_sop#:
+			alu[buffer_offset, --, b, PACKET_LENGTH]
+			alu_shf[temp, 0xff, and, $rsw0, >>16]
+			alu[_packet_length, buffer_offset, +, temp]
+			alu[PACKET_LENGTH, --, b, _packet_length]
+
+			immed[temp, 0xffff]
+			alu[temp, $rsw1, and, temp]
+			alu[_packet_checksum, PACKET_CHECKSUM, +, temp]
+			alu[PACKET_CHECKSUM, --, b, _packet_checksum]
+		.end
+
+		/*
+		 * Allocate buffer in case of SOP.
+		 */
+		.begin
+			.reg temp
+
+			alu[temp, 1, and, $rsw0, >>15]
+			beq[skip_buffer_alloc#]
+
+			.begin
+				.sig zzz
+				.reg read $stemp $stemp2
+				.xfer_order $stemp $stemp2
+
+			rx_nobufs#:
+				scratch[get, $stemp, zero, 0, 1], ctx_swap[zzz]
+				alu[_buffer_handle, --, b, $stemp]
+				beq[rx_nobufs#]
+
+				sram[read, $stemp, _buffer_handle, 0, 2],
+								ctx_swap[zzz]
+				alu[_buffer_start, --, b, $stemp]
+				alu[_buffer_length, --, b, $stemp2]
+			.end
+
+		skip_buffer_alloc#:
+		.end
+
+		/*
+		 * Resynchronise.
+		 */
+		.begin
+			ctx_arb[sig2]
+			local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig2 << 3))]
+		.end
+
+		/*
+		 * Synchronise buffer state.
+		 */
+		.begin
+			.reg temp
+
+			alu[temp, 1, and, $rsw0, >>15]
+			beq[copy_from_local_mem#]
+
+			alu[BUFFER_HANDLE, --, b, _buffer_handle]
+			alu[BUFFER_START, --, b, _buffer_start]
+			alu[BUFFER_LENGTH, --, b, _buffer_length]
+			br[sync_state_done#]
+
+		copy_from_local_mem#:
+			alu[_buffer_handle, --, b, BUFFER_HANDLE]
+			alu[_buffer_start, --, b, BUFFER_START]
+			alu[_buffer_length, --, b, BUFFER_LENGTH]
+
+		sync_state_done#:
+		.end
+
+#if 0
+		/*
+		 * Debug buffer state management.
+		 */
+		.begin
+			.reg temp
+
+			alu[temp, 1, and, $rsw0, >>14]
+			beq[no_poison#]
+			immed[BUFFER_HANDLE, 0xdead]
+			immed[BUFFER_START, 0xdead]
+			immed[BUFFER_LENGTH, 0xdead]
+		no_poison#:
+
+			immed[temp, 0xdead]
+			alu[--, _buffer_handle, -, temp]
+			beq[state_corrupted#]
+			alu[--, _buffer_start, -, temp]
+			beq[state_corrupted#]
+			alu[--, _buffer_length, -, temp]
+			beq[state_corrupted#]
+		.end
+#endif
+
+		/*
+		 * Check buffer length.
+		 */
+		.begin
+			alu[--, _buffer_length, -, _packet_length]
+			blo[buffer_overflow#]
+		.end
+
+		/*
+		 * Copy the mpacket and give back the RBUF element.
+		 */
+		.begin
+			.reg element
+			.reg xfer_size
+			.reg temp
+			.sig copy_sig
+
+			alu_shf[element, 0x7f, and, $rsw0, >>24]
+			alu_shf[xfer_size, 0xff, and, $rsw0, >>16]
+
+			alu[xfer_size, xfer_size, -, 1]
+			alu_shf[xfer_size, 0x10, or, xfer_size, >>3]
+			alu_shf[temp, 0x10, or, xfer_size, <<21]
+			alu_shf[temp, temp, or, element, <<11]
+			alu_shf[--, temp, or, 1, <<18]
+
+			dram[rbuf_rd, --, _buffer_start, buffer_offset, max_8],
+						indirect_ref, sig_done[copy_sig]
+			ctx_arb[copy_sig]
+
+			alu[temp, RBUF_ELEMENT_DONE, or, element, <<16]
+			msf[fast_wr, --, temp, 0]
+		.end
+
+		/*
+		 * If EOP, write back the packet descriptor.
+		 */
+		.begin
+			.reg write $stemp $stemp2
+			.xfer_order $stemp $stemp2
+			.sig zzz
+
+			alu_shf[--, 1, and, $rsw0, >>14]
+			beq[no_writeback#]
+
+			alu[$stemp, $rsw0, and, 0x1f]
+			alu[$stemp2, --, b, _packet_length]
+			sram[write, $stemp, _buffer_handle, 8, 2], ctx_swap[zzz]
+
+		no_writeback#:
+		.end
+
+		/*
+		 * Resynchronise.
+		 */
+		.begin
+			ctx_arb[sig3]
+			local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig3 << 3))]
+		.end
+
+		/*
+		 * If EOP, put the buffer back onto the scratch ring.
+		 */
+		.begin
+			.reg write $stemp
+			.sig zzz
+
+			br_inp_state[SCR_Ring1_Status, rx_done_ring_overflow#]
+
+			alu_shf[--, 1, and, $rsw0, >>14]
+			beq[mpacket_receive_loop#]
+
+			alu[--, 1, and, $rsw0, >>10]
+			bne[rxerr#]
+
+			alu[$stemp, --, b, _buffer_handle]
+			scratch[put, $stemp, zero, 4, 1], ctx_swap[zzz]
+			cap[fast_wr, 0, XSCALE_INT_A]
+			br[mpacket_receive_loop#]
+
+		rxerr#:
+			alu[$stemp, --, b, _buffer_handle]
+			scratch[put, $stemp, zero, 0, 1], ctx_swap[zzz]
+			br[mpacket_receive_loop#]
+		.end
+	.end
+
+
+abort_rswerr#:
+	halt
+
+abort_proterr#:
+	halt
+
+state_corrupted#:
+	halt
+
+buffer_overflow#:
+	halt
+
+rx_done_ring_overflow#:
+	halt
+
+
diff --git a/drivers/net/ixp2000/ixp2400_rx.ucode b/drivers/net/ixp2000/ixp2400_rx.ucode
new file mode 100644
index 00000000000..e8aee2f81aa
--- /dev/null
+++ b/drivers/net/ixp2000/ixp2400_rx.ucode
@@ -0,0 +1,130 @@
+static struct ixp2000_uengine_code ixp2400_rx =
+{
+	.cpu_model_bitmask	= 0x000003fe,
+	.cpu_min_revision	= 0,
+	.cpu_max_revision	= 255,
+
+	.uengine_parameters	= IXP2000_UENGINE_8_CONTEXTS |
+				  IXP2000_UENGINE_PRN_UPDATE_EVERY |
+				  IXP2000_UENGINE_NN_FROM_PREVIOUS |
+				  IXP2000_UENGINE_ASSERT_EMPTY_AT_0 |
+				  IXP2000_UENGINE_LM_ADDR1_PER_CONTEXT |
+				  IXP2000_UENGINE_LM_ADDR0_PER_CONTEXT,
+
+	.initial_reg_values	= (struct ixp2000_reg_value []) {
+		{ -1, -1 }
+	},
+
+	.num_insns		= 109,
+	.insns			= (u8 []) {
+		0xf0, 0x00, 0x0c, 0xc0, 0x05,
+		0xf4, 0x44, 0x0c, 0x00, 0x05,
+		0xfc, 0x04, 0x4c, 0x00, 0x00,
+		0xf0, 0x00, 0x00, 0x3b, 0x00,
+		0xb4, 0x40, 0xf0, 0x3b, 0x1f,
+		0x8a, 0xc0, 0x50, 0x3e, 0x05,
+		0xb4, 0x40, 0xf0, 0x3b, 0x80,
+		0x9a, 0xe0, 0x00, 0x3e, 0x05,
+		0xf0, 0x00, 0x00, 0x07, 0x00,
+		0xd8, 0x05, 0xc0, 0x00, 0x11,
+		0xf0, 0x00, 0x00, 0x0f, 0x00,
+		0x91, 0xb0, 0x20, 0x0e, 0x00,
+		0xfc, 0x06, 0x60, 0x0b, 0x00,
+		0xf0, 0x00, 0x0c, 0x03, 0x00,
+		0xf0, 0x00, 0x0c, 0x03, 0x00,
+		0xf0, 0x00, 0x0c, 0x03, 0x00,
+		0xf0, 0x00, 0x0c, 0x02, 0x00,
+		0xb0, 0xc0, 0x30, 0x0f, 0x01,
+		0xa4, 0x70, 0x00, 0x0f, 0x20,
+		0xd8, 0x02, 0xc0, 0x01, 0x00,
+		0xfc, 0x10, 0xac, 0x23, 0x08,
+		0xfc, 0x10, 0xac, 0x43, 0x10,
+		0xfc, 0x10, 0xac, 0x63, 0x18,
+		0xe0, 0x00, 0x00, 0x00, 0x02,
+		0xfc, 0x10, 0xae, 0x23, 0x88,
+		0x3d, 0x00, 0x04, 0x03, 0x20,
+		0xe0, 0x00, 0x00, 0x00, 0x10,
+		0x84, 0x82, 0x02, 0x01, 0x3b,
+		0xd8, 0x1a, 0x00, 0x01, 0x01,
+		0xb4, 0x00, 0x8c, 0x7d, 0x80,
+		0x91, 0xb0, 0x80, 0x22, 0x00,
+		0xfc, 0x06, 0x60, 0x23, 0x00,
+		0xf0, 0x00, 0x0c, 0x03, 0x00,
+		0xf0, 0x00, 0x0c, 0x03, 0x00,
+		0xf0, 0x00, 0x0c, 0x03, 0x00,
+		0x94, 0xf0, 0x92, 0x01, 0x21,
+		0xac, 0x40, 0x60, 0x26, 0x00,
+		0xa4, 0x30, 0x0c, 0x04, 0x06,
+		0xd8, 0x1a, 0x40, 0x01, 0x00,
+		0x94, 0xe0, 0xa2, 0x01, 0x21,
+		0xac, 0x20, 0x00, 0x28, 0x06,
+		0x84, 0xf2, 0x02, 0x01, 0x21,
+		0xd8, 0x0b, 0x40, 0x01, 0x00,
+		0xf0, 0x00, 0x0c, 0x02, 0x01,
+		0xf0, 0x00, 0x0c, 0x02, 0x02,
+		0xa0, 0x00, 0x08, 0x04, 0x00,
+		0x95, 0x00, 0xc6, 0x01, 0xff,
+		0xa0, 0x80, 0x10, 0x30, 0x00,
+		0xa0, 0x60, 0x1c, 0x00, 0x01,
+		0xf0, 0x0f, 0xf0, 0x33, 0xff,
+		0xb4, 0x00, 0xc0, 0x31, 0x81,
+		0xb0, 0x80, 0xb0, 0x32, 0x02,
+		0xa0, 0x20, 0x20, 0x2c, 0x00,
+		0x94, 0xf0, 0xd2, 0x01, 0x21,
+		0xd8, 0x0f, 0x40, 0x01, 0x00,
+		0x19, 0x40, 0x10, 0x04, 0x20,
+		0xa0, 0x00, 0x26, 0x04, 0x00,
+		0xd8, 0x0d, 0xc0, 0x01, 0x00,
+		0x00, 0x42, 0x10, 0x80, 0x02,
+		0xb0, 0x00, 0x46, 0x04, 0x00,
+		0xb0, 0x00, 0x56, 0x08, 0x00,
+		0xe0, 0x00, 0x00, 0x00, 0x04,
+		0xfc, 0x10, 0xae, 0x43, 0x90,
+		0x84, 0xf0, 0x32, 0x01, 0x21,
+		0xd8, 0x11, 0x40, 0x01, 0x00,
+		0xa0, 0x60, 0x3c, 0x00, 0x02,
+		0xa0, 0x20, 0x40, 0x10, 0x00,
+		0xa0, 0x20, 0x50, 0x14, 0x00,
+		0xd8, 0x12, 0x00, 0x00, 0x18,
+		0xa0, 0x00, 0x28, 0x0c, 0x00,
+		0xb0, 0x00, 0x48, 0x10, 0x00,
+		0xb0, 0x00, 0x58, 0x14, 0x00,
+		0xaa, 0xf0, 0x00, 0x14, 0x01,
+		0xd8, 0x1a, 0xc0, 0x01, 0x05,
+		0x85, 0x80, 0x42, 0x01, 0xff,
+		0x95, 0x00, 0x66, 0x01, 0xff,
+		0xba, 0xc0, 0x60, 0x1b, 0x01,
+		0x9a, 0x30, 0x60, 0x19, 0x30,
+		0x9a, 0xb0, 0x70, 0x1a, 0x30,
+		0x9b, 0x50, 0x78, 0x1e, 0x04,
+		0x8a, 0xe2, 0x08, 0x1e, 0x21,
+		0x6a, 0x4e, 0x00, 0x13, 0x00,
+		0xe0, 0x00, 0x00, 0x00, 0x30,
+		0x9b, 0x00, 0x7a, 0x92, 0x04,
+		0x3d, 0x00, 0x04, 0x1f, 0x20,
+		0x84, 0xe2, 0x02, 0x01, 0x21,
+		0xd8, 0x16, 0x80, 0x01, 0x00,
+		0xa4, 0x18, 0x0c, 0x7d, 0x80,
+		0xa0, 0x58, 0x1c, 0x00, 0x01,
+		0x01, 0x42, 0x00, 0xa0, 0x02,
+		0xe0, 0x00, 0x00, 0x00, 0x08,
+		0xfc, 0x10, 0xae, 0x63, 0x98,
+		0xd8, 0x1b, 0x00, 0xc2, 0x14,
+		0x84, 0xe2, 0x02, 0x01, 0x21,
+		0xd8, 0x05, 0xc0, 0x01, 0x00,
+		0x84, 0xa2, 0x02, 0x01, 0x21,
+		0xd8, 0x19, 0x40, 0x01, 0x01,
+		0xa0, 0x58, 0x0c, 0x00, 0x02,
+		0x1a, 0x40, 0x00, 0x04, 0x24,
+		0x33, 0x00, 0x01, 0x2f, 0x20,
+		0xd8, 0x05, 0xc0, 0x00, 0x18,
+		0xa0, 0x58, 0x0c, 0x00, 0x02,
+		0x1a, 0x40, 0x00, 0x04, 0x20,
+		0xd8, 0x05, 0xc0, 0x00, 0x18,
+		0xe0, 0x00, 0x02, 0x00, 0x00,
+		0xe0, 0x00, 0x02, 0x00, 0x00,
+		0xe0, 0x00, 0x02, 0x00, 0x00,
+		0xe0, 0x00, 0x02, 0x00, 0x00,
+		0xe0, 0x00, 0x02, 0x00, 0x00,
+	}
+};
diff --git a/drivers/net/ixp2000/ixp2400_tx.uc b/drivers/net/ixp2000/ixp2400_tx.uc
new file mode 100644
index 00000000000..d090d1884fb
--- /dev/null
+++ b/drivers/net/ixp2000/ixp2400_tx.uc
@@ -0,0 +1,272 @@
+/*
+ * TX ucode for the Intel IXP2400 in POS-PHY mode.
+ * Copyright (C) 2004, 2005 Lennert Buytenhek
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ *
+ * Assumptions made in this code:
+ * - The IXP2400 MSF is configured for POS-PHY mode, in a mode where
+ *   only one TBUF partition is used.  This includes, for example,
+ *   1x32 SPHY and 1x32 MPHY32, but not 4x8 SPHY or 1x32 MPHY4. (This
+ *   is not an exhaustive list.)
+ * - The TBUF uses 64-byte mpackets.
+ * - TX descriptors reside in SRAM, and have the following format:
+ *	struct tx_desc
+ *	{
+ *	// to uengine
+ *		u32	buf_phys_addr;
+ *		u32	pkt_length;
+ *		u32	channel;
+ *	};
+ * - Packet data resides in DRAM.
+ * - Packet buffer addresses are 8-byte aligned.
+ * - Scratch ring 2 is tx_pending.
+ * - Scratch ring 3 is tx_done, and has status condition 'full'.
+ * - This code is run on all eight threads of the microengine it runs on.
+ */
+
+#define TX_SEQUENCE_0		0x0060
+#define TBUF_CTRL		0x1800
+
+#define PARTITION_SIZE		128
+#define PARTITION_THRESH	96
+
+
+	.sig volatile sig1
+	.sig volatile sig2
+	.sig volatile sig3
+
+	.reg @old_tx_seq_0
+	.reg @mpkts_in_flight
+	.reg @next_tbuf_mpacket
+
+	.reg @buffer_handle
+	.reg @buffer_start
+	.reg @packet_length
+	.reg @channel
+	.reg @packet_offset
+
+	.reg zero
+
+	immed[zero, 0]
+
+	/*
+	 * Skip context 0 initialisation?
+	 */
+	.begin
+		br!=ctx[0, mpacket_tx_loop#]
+	.end
+
+	/*
+	 * Wait until all pending TBUF elements have been transmitted.
+	 */
+	.begin
+		.reg read $tx
+		.sig zzz
+
+	loop_empty#:
+		msf[read, $tx, zero, TX_SEQUENCE_0, 1], ctx_swap[zzz]
+		alu_shf[--, --, b, $tx, >>31]
+		beq[loop_empty#]
+
+		alu[@old_tx_seq_0, --, b, $tx]
+	.end
+
+	immed[@mpkts_in_flight, 0]
+	alu[@next_tbuf_mpacket, @old_tx_seq_0, and, (PARTITION_SIZE - 1)]
+
+	immed[@buffer_handle, 0]
+
+	/*
+	 * Initialise signal pipeline.
+	 */
+	.begin
+		local_csr_wr[SAME_ME_SIGNAL, (&sig1 << 3)]
+		.set_sig sig1
+
+		local_csr_wr[SAME_ME_SIGNAL, (&sig2 << 3)]
+		.set_sig sig2
+
+		local_csr_wr[SAME_ME_SIGNAL, (&sig3 << 3)]
+		.set_sig sig3
+	.end
+
+mpacket_tx_loop#:
+	.begin
+		.reg tbuf_element_index
+		.reg buffer_handle
+		.reg sop_eop
+		.reg packet_data
+		.reg channel
+		.reg mpacket_size
+
+		/*
+		 * If there is no packet currently being transmitted,
+		 * dequeue the next TX descriptor, and fetch the buffer
+		 * address, packet length and destination channel number.
+		 */
+		.begin
+			.reg read $stemp $stemp2 $stemp3
+			.xfer_order $stemp $stemp2 $stemp3
+			.sig zzz
+
+			ctx_arb[sig1]
+
+			alu[--, --, b, @buffer_handle]
+			bne[already_got_packet#]
+
+		tx_nobufs#:
+			scratch[get, $stemp, zero, 8, 1], ctx_swap[zzz]
+			alu[@buffer_handle, --, b, $stemp]
+			beq[tx_nobufs#]
+
+			sram[read, $stemp, $stemp, 0, 3], ctx_swap[zzz]
+			alu[@buffer_start, --, b, $stemp]
+			alu[@packet_length, --, b, $stemp2]
+			beq[zero_byte_packet#]
+			alu[@channel, --, b, $stemp3]
+			immed[@packet_offset, 0]
+
+		already_got_packet#:
+			local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig1 << 3))]
+		.end
+
+		/*
+		 * Determine tbuf element index, SOP/EOP flags, mpacket
+		 * offset and mpacket size and cache buffer_handle and
+		 * channel number.
+		 */
+		.begin
+			alu[tbuf_element_index, --, b, @next_tbuf_mpacket]
+			alu[@next_tbuf_mpacket, @next_tbuf_mpacket, +, 1]
+			alu[@next_tbuf_mpacket, @next_tbuf_mpacket, and,
+							(PARTITION_SIZE - 1)]
+
+			alu[buffer_handle, --, b, @buffer_handle]
+			immed[@buffer_handle, 0]
+
+			immed[sop_eop, 1]
+
+			alu[packet_data, --, b, @packet_offset]
+			bne[no_sop#]
+			alu[sop_eop, sop_eop, or, 2]
+		no_sop#:
+			alu[packet_data, packet_data, +, @buffer_start]
+
+			alu[channel, --, b, @channel]
+
+			alu[mpacket_size, @packet_length, -, @packet_offset]
+			alu[--, 64, -, mpacket_size]
+			bhs[eop#]
+			alu[@buffer_handle, --, b, buffer_handle]
+			immed[mpacket_size, 64]
+			alu[sop_eop, sop_eop, and, 2]
+		eop#:
+
+			alu[@packet_offset, @packet_offset, +, mpacket_size]
+		.end
+
+		/*
+		 * Wait until there's enough space in the TBUF.
+		 */
+		.begin
+			.reg read $tx
+			.reg temp
+			.sig zzz
+
+			ctx_arb[sig2]
+
+			br[test_space#]
+
+		loop_space#:
+			msf[read, $tx, zero, TX_SEQUENCE_0, 1], ctx_swap[zzz]
+
+			alu[temp, $tx, -, @old_tx_seq_0]
+			alu[temp, temp, and, 0xff]
+			alu[@mpkts_in_flight, @mpkts_in_flight, -, temp]
+
+			alu[@old_tx_seq_0, --, b, $tx]
+
+		test_space#:
+			alu[--, PARTITION_THRESH, -, @mpkts_in_flight]
+			blo[loop_space#]
+
+			alu[@mpkts_in_flight, @mpkts_in_flight, +, 1]
+
+			local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig2 << 3))]
+		.end
+
+		/*
+		 * Copy the packet data to the TBUF.
+		 */
+		.begin
+			.reg temp
+			.sig copy_sig
+
+			alu[temp, mpacket_size, -, 1]
+			alu_shf[temp, 0x10, or, temp, >>3]
+			alu_shf[temp, 0x10, or, temp, <<21]
+			alu_shf[temp, temp, or, tbuf_element_index, <<11]
+			alu_shf[--, temp, or, 1, <<18]
+
+			dram[tbuf_wr, --, packet_data, 0, max_8],
+					indirect_ref, sig_done[copy_sig]
+			ctx_arb[copy_sig]
+		.end
+
+		/*
+		 * Mark TBUF element as ready-to-be-transmitted.
+		 */
+		.begin
+			.reg write $tsw $tsw2
+			.xfer_order $tsw $tsw2
+			.reg temp
+			.sig zzz
+
+			alu_shf[temp, channel, or, mpacket_size, <<24]
+			alu_shf[$tsw, temp, or, sop_eop, <<8]
+			immed[$tsw2, 0]
+
+			immed[temp, TBUF_CTRL]
+			alu_shf[temp, temp, or, tbuf_element_index, <<3]
+			msf[write, $tsw, temp, 0, 2], ctx_swap[zzz]
+		.end
+
+		/*
+		 * Resynchronise.
+		 */
+		.begin
+			ctx_arb[sig3]
+			local_csr_wr[SAME_ME_SIGNAL, (0x80 | (&sig3 << 3))]
+		.end
+
+		/*
+		 * If this was an EOP mpacket, recycle the TX buffer
+	 	 * and signal the host.
+		 */
+		.begin
+			.reg write $stemp
+			.sig zzz
+
+			alu[--, sop_eop, and, 1]
+			beq[mpacket_tx_loop#]
+
+		tx_done_ring_full#:
+			br_inp_state[SCR_Ring3_Status, tx_done_ring_full#]
+
+			alu[$stemp, --, b, buffer_handle]
+			scratch[put, $stemp, zero, 12, 1], ctx_swap[zzz]
+			cap[fast_wr, 0, XSCALE_INT_A]
+			br[mpacket_tx_loop#]
+		.end
+	.end
+
+
+zero_byte_packet#:
+	halt
+
+
diff --git a/drivers/net/ixp2000/ixp2400_tx.ucode b/drivers/net/ixp2000/ixp2400_tx.ucode
new file mode 100644
index 00000000000..a433e24b0a5
--- /dev/null
+++ b/drivers/net/ixp2000/ixp2400_tx.ucode
@@ -0,0 +1,98 @@
+static struct ixp2000_uengine_code ixp2400_tx =
+{
+	.cpu_model_bitmask	= 0x000003fe,
+	.cpu_min_revision	= 0,
+	.cpu_max_revision	= 255,
+
+	.uengine_parameters	= IXP2000_UENGINE_8_CONTEXTS |
+				  IXP2000_UENGINE_PRN_UPDATE_EVERY |
+				  IXP2000_UENGINE_NN_FROM_PREVIOUS |
+				  IXP2000_UENGINE_ASSERT_EMPTY_AT_0 |
+				  IXP2000_UENGINE_LM_ADDR1_PER_CONTEXT |
+				  IXP2000_UENGINE_LM_ADDR0_PER_CONTEXT,
+
+	.initial_reg_values	= (struct ixp2000_reg_value []) {
+		{ -1, -1 }
+	},
+
+	.num_insns		= 77,
+	.insns			= (u8 []) {
+		0xf0, 0x00, 0x00, 0x07, 0x00,
+		0xd8, 0x03, 0x00, 0x00, 0x11,
+		0x3c, 0x40, 0x00, 0x04, 0xe0,
+		0x81, 0xf2, 0x02, 0x01, 0x00,
+		0xd8, 0x00, 0x80, 0x01, 0x00,
+		0xb0, 0x08, 0x06, 0x00, 0x00,
+		0xf0, 0x00, 0x0c, 0x00, 0x80,
+		0xb4, 0x49, 0x02, 0x03, 0x7f,
+		0xf0, 0x00, 0x02, 0x83, 0x00,
+		0xfc, 0x10, 0xac, 0x23, 0x08,
+		0xfc, 0x10, 0xac, 0x43, 0x10,
+		0xfc, 0x10, 0xac, 0x63, 0x18,
+		0xe0, 0x00, 0x00, 0x00, 0x02,
+		0xa0, 0x30, 0x02, 0x80, 0x00,
+		0xd8, 0x06, 0x00, 0x01, 0x01,
+		0x19, 0x40, 0x00, 0x04, 0x28,
+		0xb0, 0x0a, 0x06, 0x00, 0x00,
+		0xd8, 0x03, 0xc0, 0x01, 0x00,
+		0x00, 0x44, 0x00, 0x80, 0x80,
+		0xa0, 0x09, 0x06, 0x00, 0x00,
+		0xb0, 0x0b, 0x06, 0x04, 0x00,
+		0xd8, 0x13, 0x00, 0x01, 0x00,
+		0xb0, 0x0c, 0x06, 0x08, 0x00,
+		0xf0, 0x00, 0x0c, 0x00, 0xa0,
+		0xfc, 0x10, 0xae, 0x23, 0x88,
+		0xa0, 0x00, 0x12, 0x40, 0x00,
+		0xb0, 0xc9, 0x02, 0x43, 0x01,
+		0xb4, 0x49, 0x02, 0x43, 0x7f,
+		0xb0, 0x00, 0x22, 0x80, 0x00,
+		0xf0, 0x00, 0x02, 0x83, 0x00,
+		0xf0, 0x00, 0x0c, 0x04, 0x02,
+		0xb0, 0x40, 0x6c, 0x00, 0xa0,
+		0xd8, 0x08, 0x80, 0x01, 0x01,
+		0xaa, 0x00, 0x2c, 0x08, 0x02,
+		0xa0, 0xc0, 0x30, 0x18, 0x90,
+		0xa0, 0x00, 0x43, 0x00, 0x00,
+		0xba, 0xc0, 0x32, 0xc0, 0xa0,
+		0xaa, 0xb0, 0x00, 0x0f, 0x40,
+		0xd8, 0x0a, 0x80, 0x01, 0x04,
+		0xb0, 0x0a, 0x00, 0x08, 0x00,
+		0xf0, 0x00, 0x00, 0x0f, 0x40,
+		0xa4, 0x00, 0x2c, 0x08, 0x02,
+		0xa0, 0x8a, 0x00, 0x0c, 0xa0,
+		0xe0, 0x00, 0x00, 0x00, 0x04,
+		0xd8, 0x0c, 0x80, 0x00, 0x18,
+		0x3c, 0x40, 0x00, 0x04, 0xe0,
+		0xba, 0x80, 0x42, 0x01, 0x80,
+		0xb4, 0x40, 0x40, 0x13, 0xff,
+		0xaa, 0x88, 0x00, 0x10, 0x80,
+		0xb0, 0x08, 0x06, 0x00, 0x00,
+		0xaa, 0xf0, 0x0d, 0x80, 0x80,
+		0xd8, 0x0b, 0x40, 0x01, 0x05,
+		0xa0, 0x88, 0x0c, 0x04, 0x80,
+		0xfc, 0x10, 0xae, 0x43, 0x90,
+		0xba, 0xc0, 0x50, 0x0f, 0x01,
+		0x9a, 0x30, 0x50, 0x15, 0x30,
+		0x9a, 0xb0, 0x50, 0x16, 0x30,
+		0x9b, 0x50, 0x58, 0x16, 0x01,
+		0x8a, 0xe2, 0x08, 0x16, 0x21,
+		0x6b, 0x4e, 0x00, 0x83, 0x03,
+		0xe0, 0x00, 0x00, 0x00, 0x30,
+		0x9a, 0x80, 0x70, 0x0e, 0x04,
+		0x8b, 0x88, 0x08, 0x1e, 0x02,
+		0xf0, 0x00, 0x0c, 0x01, 0x81,
+		0xf0, 0x01, 0x80, 0x1f, 0x00,
+		0x9b, 0xd0, 0x78, 0x1e, 0x01,
+		0x3d, 0x42, 0x00, 0x1c, 0x20,
+		0xe0, 0x00, 0x00, 0x00, 0x08,
+		0xfc, 0x10, 0xae, 0x63, 0x98,
+		0xa4, 0x30, 0x0c, 0x04, 0x02,
+		0xd8, 0x03, 0x00, 0x01, 0x00,
+		0xd8, 0x11, 0xc1, 0x42, 0x14,
+		0xa0, 0x18, 0x00, 0x08, 0x00,
+		0x1a, 0x40, 0x00, 0x04, 0x2c,
+		0x33, 0x00, 0x01, 0x2f, 0x20,
+		0xd8, 0x03, 0x00, 0x00, 0x18,
+		0xe0, 0x00, 0x02, 0x00, 0x00,
+	}
+};
diff --git a/drivers/net/ixp2000/ixpdev.c b/drivers/net/ixp2000/ixpdev.c
new file mode 100644
index 00000000000..09f03f493be
--- /dev/null
+++ b/drivers/net/ixp2000/ixpdev.c
@@ -0,0 +1,421 @@
+/*
+ * IXP2000 MSF network device driver
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/moduleparam.h>
+#include <asm/arch/uengine.h>
+#include <asm/mach-types.h>
+#include <asm/io.h>
+#include "ixp2400_rx.ucode"
+#include "ixp2400_tx.ucode"
+#include "ixpdev_priv.h"
+#include "ixpdev.h"
+
+#define DRV_MODULE_VERSION	"0.2"
+
+static int nds_count;
+static struct net_device **nds;
+static int nds_open;
+static void (*set_port_admin_status)(int port, int up);
+
+static struct ixpdev_rx_desc * const rx_desc =
+	(struct ixpdev_rx_desc *)(IXP2000_SRAM0_VIRT_BASE + RX_BUF_DESC_BASE);
+static struct ixpdev_tx_desc * const tx_desc =
+	(struct ixpdev_tx_desc *)(IXP2000_SRAM0_VIRT_BASE + TX_BUF_DESC_BASE);
+static int tx_pointer;
+
+
+static int ixpdev_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct ixpdev_priv *ip = netdev_priv(dev);
+	struct ixpdev_tx_desc *desc;
+	int entry;
+
+	if (unlikely(skb->len > PAGE_SIZE)) {
+		/* @@@ Count drops.  */
+		dev_kfree_skb(skb);
+		return 0;
+	}
+
+	entry = tx_pointer;
+	tx_pointer = (tx_pointer + 1) % TX_BUF_COUNT;
+
+	desc = tx_desc + entry;
+	desc->pkt_length = skb->len;
+	desc->channel = ip->channel;
+
+	skb_copy_and_csum_dev(skb, phys_to_virt(desc->buf_addr));
+	dev_kfree_skb(skb);
+
+	ixp2000_reg_write(RING_TX_PENDING,
+		TX_BUF_DESC_BASE + (entry * sizeof(struct ixpdev_tx_desc)));
+
+	dev->trans_start = jiffies;
+
+	local_irq_disable();
+	ip->tx_queue_entries++;
+	if (ip->tx_queue_entries == TX_BUF_COUNT_PER_CHAN)
+		netif_stop_queue(dev);
+	local_irq_enable();
+
+	return 0;
+}
+
+
+static int ixpdev_rx(struct net_device *dev, int *budget)
+{
+	while (*budget > 0) {
+		struct ixpdev_rx_desc *desc;
+		struct sk_buff *skb;
+		void *buf;
+		u32 _desc;
+
+		_desc = ixp2000_reg_read(RING_RX_DONE);
+		if (_desc == 0)
+			return 0;
+
+		desc = rx_desc +
+			((_desc - RX_BUF_DESC_BASE) / sizeof(struct ixpdev_rx_desc));
+		buf = phys_to_virt(desc->buf_addr);
+
+		if (desc->pkt_length < 4 || desc->pkt_length > PAGE_SIZE) {
+			printk(KERN_ERR "ixp2000: rx err, length %d\n",
+					desc->pkt_length);
+			goto err;
+		}
+
+		if (desc->channel < 0 || desc->channel >= nds_count) {
+			printk(KERN_ERR "ixp2000: rx err, channel %d\n",
+					desc->channel);
+			goto err;
+		}
+
+		/* @@@ Make FCS stripping configurable.  */
+		desc->pkt_length -= 4;
+
+		if (unlikely(!netif_running(nds[desc->channel])))
+			goto err;
+
+		skb = dev_alloc_skb(desc->pkt_length + 2);
+		if (likely(skb != NULL)) {
+			skb->dev = nds[desc->channel];
+			skb_reserve(skb, 2);
+			eth_copy_and_sum(skb, buf, desc->pkt_length, 0);
+			skb_put(skb, desc->pkt_length);
+			skb->protocol = eth_type_trans(skb, skb->dev);
+
+			skb->dev->last_rx = jiffies;
+
+			netif_receive_skb(skb);
+		}
+
+err:
+		ixp2000_reg_write(RING_RX_PENDING, _desc);
+		dev->quota--;
+		(*budget)--;
+	}
+
+	return 1;
+}
+
+/* dev always points to nds[0].  */
+static int ixpdev_poll(struct net_device *dev, int *budget)
+{
+	/* @@@ Have to stop polling when nds[0] is administratively
+	 * downed while we are polling.  */
+	do {
+		ixp2000_reg_write(IXP2000_IRQ_THD_RAW_STATUS_A_0, 0x00ff);
+
+		if (ixpdev_rx(dev, budget))
+			return 1;
+	} while (ixp2000_reg_read(IXP2000_IRQ_THD_RAW_STATUS_A_0) & 0x00ff);
+
+	netif_rx_complete(dev);
+	ixp2000_reg_write(IXP2000_IRQ_THD_ENABLE_SET_A_0, 0x00ff);
+
+	return 0;
+}
+
+static void ixpdev_tx_complete(void)
+{
+	int channel;
+	u32 wake;
+
+	wake = 0;
+	while (1) {
+		struct ixpdev_priv *ip;
+		u32 desc;
+		int entry;
+
+		desc = ixp2000_reg_read(RING_TX_DONE);
+		if (desc == 0)
+			break;
+
+		/* @@@ Check whether entries come back in order.  */
+		entry = (desc - TX_BUF_DESC_BASE) / sizeof(struct ixpdev_tx_desc);
+		channel = tx_desc[entry].channel;
+
+		if (channel < 0 || channel >= nds_count) {
+			printk(KERN_ERR "ixp2000: txcomp channel index "
+					"out of bounds (%d, %.8i, %d)\n",
+					channel, (unsigned int)desc, entry);
+			continue;
+		}
+
+		ip = netdev_priv(nds[channel]);
+		if (ip->tx_queue_entries == TX_BUF_COUNT_PER_CHAN)
+			wake |= 1 << channel;
+		ip->tx_queue_entries--;
+	}
+
+	for (channel = 0; wake != 0; channel++) {
+		if (wake & (1 << channel)) {
+			netif_wake_queue(nds[channel]);
+			wake &= ~(1 << channel);
+		}
+	}
+}
+
+static irqreturn_t ixpdev_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	u32 status;
+
+	status = ixp2000_reg_read(IXP2000_IRQ_THD_STATUS_A_0);
+	if (status == 0)
+		return IRQ_NONE;
+
+	/*
+	 * Any of the eight receive units signaled RX?
+	 */
+	if (status & 0x00ff) {
+		ixp2000_reg_wrb(IXP2000_IRQ_THD_ENABLE_CLEAR_A_0, 0x00ff);
+		if (likely(__netif_rx_schedule_prep(nds[0]))) {
+			__netif_rx_schedule(nds[0]);
+		} else {
+			printk(KERN_CRIT "ixp2000: irq while polling!!\n");
+		}
+	}
+
+	/*
+	 * Any of the eight transmit units signaled TXdone?
+	 */
+	if (status & 0xff00) {
+		ixp2000_reg_wrb(IXP2000_IRQ_THD_RAW_STATUS_A_0, 0xff00);
+		ixpdev_tx_complete();
+	}
+
+	return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void ixpdev_poll_controller(struct net_device *dev)
+{
+	disable_irq(IRQ_IXP2000_THDA0);
+	ixpdev_interrupt(IRQ_IXP2000_THDA0, dev, NULL);
+	enable_irq(IRQ_IXP2000_THDA0);
+}
+#endif
+
+static int ixpdev_open(struct net_device *dev)
+{
+	struct ixpdev_priv *ip = netdev_priv(dev);
+	int err;
+
+	if (!nds_open++) {
+		err = request_irq(IRQ_IXP2000_THDA0, ixpdev_interrupt,
+					SA_SHIRQ, "ixp2000_eth", nds);
+		if (err) {
+			nds_open--;
+			return err;
+		}
+
+		ixp2000_reg_write(IXP2000_IRQ_THD_ENABLE_SET_A_0, 0xffff);
+	}
+
+	set_port_admin_status(ip->channel, 1);
+	netif_start_queue(dev);
+
+	return 0;
+}
+
+static int ixpdev_close(struct net_device *dev)
+{
+	struct ixpdev_priv *ip = netdev_priv(dev);
+
+	netif_stop_queue(dev);
+	set_port_admin_status(ip->channel, 0);
+
+	if (!--nds_open) {
+		ixp2000_reg_write(IXP2000_IRQ_THD_ENABLE_CLEAR_A_0, 0xffff);
+		free_irq(IRQ_IXP2000_THDA0, nds);
+	}
+
+	return 0;
+}
+
+struct net_device *ixpdev_alloc(int channel, int sizeof_priv)
+{
+	struct net_device *dev;
+	struct ixpdev_priv *ip;
+
+	dev = alloc_etherdev(sizeof_priv);
+	if (dev == NULL)
+		return NULL;
+
+	dev->hard_start_xmit = ixpdev_xmit;
+	dev->poll = ixpdev_poll;
+	dev->open = ixpdev_open;
+	dev->stop = ixpdev_close;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = ixpdev_poll_controller;
+#endif
+
+	dev->features |= NETIF_F_SG | NETIF_F_HW_CSUM;
+	dev->weight = 64;
+
+	ip = netdev_priv(dev);
+	ip->channel = channel;
+	ip->tx_queue_entries = 0;
+
+	return dev;
+}
+
+int ixpdev_init(int __nds_count, struct net_device **__nds,
+		void (*__set_port_admin_status)(int port, int up))
+{
+	int i;
+	int err;
+
+	if (RX_BUF_COUNT > 192 || TX_BUF_COUNT > 192) {
+		static void __too_many_rx_or_tx_buffers(void);
+		__too_many_rx_or_tx_buffers();
+	}
+
+	printk(KERN_INFO "IXP2000 MSF ethernet driver %s\n", DRV_MODULE_VERSION);
+
+	nds_count = __nds_count;
+	nds = __nds;
+	set_port_admin_status = __set_port_admin_status;
+
+	for (i = 0; i < RX_BUF_COUNT; i++) {
+		void *buf;
+
+		buf = (void *)get_zeroed_page(GFP_KERNEL);
+		if (buf == NULL) {
+			err = -ENOMEM;
+			while (--i >= 0)
+				free_page((unsigned long)phys_to_virt(rx_desc[i].buf_addr));
+			goto err_out;
+		}
+		rx_desc[i].buf_addr = virt_to_phys(buf);
+		rx_desc[i].buf_length = PAGE_SIZE;
+	}
+
+	/* @@@ Maybe we shouldn't be preallocating TX buffers.  */
+	for (i = 0; i < TX_BUF_COUNT; i++) {
+		void *buf;
+
+		buf = (void *)get_zeroed_page(GFP_KERNEL);
+		if (buf == NULL) {
+			err = -ENOMEM;
+			while (--i >= 0)
+				free_page((unsigned long)phys_to_virt(tx_desc[i].buf_addr));
+			goto err_free_rx;
+		}
+		tx_desc[i].buf_addr = virt_to_phys(buf);
+	}
+
+	/* 256 entries, ring status set means 'empty', base address 0x0000.  */
+	ixp2000_reg_write(RING_RX_PENDING_BASE, 0x44000000);
+	ixp2000_reg_write(RING_RX_PENDING_HEAD, 0x00000000);
+	ixp2000_reg_write(RING_RX_PENDING_TAIL, 0x00000000);
+
+	/* 256 entries, ring status set means 'full', base address 0x0400.  */
+	ixp2000_reg_write(RING_RX_DONE_BASE, 0x40000400);
+	ixp2000_reg_write(RING_RX_DONE_HEAD, 0x00000000);
+	ixp2000_reg_write(RING_RX_DONE_TAIL, 0x00000000);
+
+	for (i = 0; i < RX_BUF_COUNT; i++) {
+		ixp2000_reg_write(RING_RX_PENDING,
+			RX_BUF_DESC_BASE + (i * sizeof(struct ixpdev_rx_desc)));
+	}
+
+	ixp2000_uengine_load(0, &ixp2400_rx);
+	ixp2000_uengine_start_contexts(0, 0xff);
+
+	/* 256 entries, ring status set means 'empty', base address 0x0800.  */
+	ixp2000_reg_write(RING_TX_PENDING_BASE, 0x44000800);
+	ixp2000_reg_write(RING_TX_PENDING_HEAD, 0x00000000);
+	ixp2000_reg_write(RING_TX_PENDING_TAIL, 0x00000000);
+
+	/* 256 entries, ring status set means 'full', base address 0x0c00.  */
+	ixp2000_reg_write(RING_TX_DONE_BASE, 0x40000c00);
+	ixp2000_reg_write(RING_TX_DONE_HEAD, 0x00000000);
+	ixp2000_reg_write(RING_TX_DONE_TAIL, 0x00000000);
+
+	ixp2000_uengine_load(1, &ixp2400_tx);
+	ixp2000_uengine_start_contexts(1, 0xff);
+
+	for (i = 0; i < nds_count; i++) {
+		err = register_netdev(nds[i]);
+		if (err) {
+			while (--i >= 0)
+				unregister_netdev(nds[i]);
+			goto err_free_tx;
+		}
+	}
+
+	for (i = 0; i < nds_count; i++) {
+		printk(KERN_INFO "%s: IXP2000 MSF ethernet (port %d), "
+			"%.2x:%.2x:%.2x:%.2x:%.2x:%.2x.\n", nds[i]->name, i,
+			nds[i]->dev_addr[0], nds[i]->dev_addr[1],
+			nds[i]->dev_addr[2], nds[i]->dev_addr[3],
+			nds[i]->dev_addr[4], nds[i]->dev_addr[5]);
+	}
+
+	return 0;
+
+err_free_tx:
+	for (i = 0; i < TX_BUF_COUNT; i++)
+		free_page((unsigned long)phys_to_virt(tx_desc[i].buf_addr));
+
+err_free_rx:
+	for (i = 0; i < RX_BUF_COUNT; i++)
+		free_page((unsigned long)phys_to_virt(rx_desc[i].buf_addr));
+
+err_out:
+	return err;
+} 
+
+void ixpdev_deinit(void)
+{
+	int i;
+
+	/* @@@ Flush out pending packets.  */
+
+	for (i = 0; i < nds_count; i++)
+		unregister_netdev(nds[i]);
+
+	ixp2000_uengine_stop_contexts(1, 0xff);
+	ixp2000_uengine_stop_contexts(0, 0xff);
+	ixp2000_uengine_reset(0x3);
+
+	for (i = 0; i < TX_BUF_COUNT; i++)
+		free_page((unsigned long)phys_to_virt(tx_desc[i].buf_addr));
+
+	for (i = 0; i < RX_BUF_COUNT; i++)
+		free_page((unsigned long)phys_to_virt(rx_desc[i].buf_addr));
+}
diff --git a/drivers/net/ixp2000/ixpdev.h b/drivers/net/ixp2000/ixpdev.h
new file mode 100644
index 00000000000..bd686cb6305
--- /dev/null
+++ b/drivers/net/ixp2000/ixpdev.h
@@ -0,0 +1,27 @@
+/*
+ * IXP2000 MSF network device driver
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ */
+
+#ifndef __IXPDEV_H
+#define __IXPDEV_H
+
+struct ixpdev_priv
+{
+	int	channel;
+	int	tx_queue_entries;
+};
+
+struct net_device *ixpdev_alloc(int channel, int sizeof_priv);
+int ixpdev_init(int num_ports, struct net_device **nds,
+		void (*set_port_admin_status)(int port, int up));
+void ixpdev_deinit(void);
+
+
+#endif
diff --git a/drivers/net/ixp2000/ixpdev_priv.h b/drivers/net/ixp2000/ixpdev_priv.h
new file mode 100644
index 00000000000..86aa08ea0c3
--- /dev/null
+++ b/drivers/net/ixp2000/ixpdev_priv.h
@@ -0,0 +1,57 @@
+/*
+ * IXP2000 MSF network device driver
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ */
+
+#ifndef __IXPDEV_PRIV_H
+#define __IXPDEV_PRIV_H
+
+#define RX_BUF_DESC_BASE	0x00001000
+#define RX_BUF_COUNT		((3 * PAGE_SIZE) / (4 * sizeof(struct ixpdev_rx_desc)))
+#define TX_BUF_DESC_BASE	0x00002000
+#define TX_BUF_COUNT		((3 * PAGE_SIZE) / (4 * sizeof(struct ixpdev_tx_desc)))
+#define TX_BUF_COUNT_PER_CHAN	(TX_BUF_COUNT / 4)
+
+#define RING_RX_PENDING		((u32 *)IXP2000_SCRATCH_RING_VIRT_BASE)
+#define RING_RX_DONE		((u32 *)(IXP2000_SCRATCH_RING_VIRT_BASE + 4))
+#define RING_TX_PENDING		((u32 *)(IXP2000_SCRATCH_RING_VIRT_BASE + 8))
+#define RING_TX_DONE		((u32 *)(IXP2000_SCRATCH_RING_VIRT_BASE + 12))
+
+#define SCRATCH_REG(x)		((u32 *)(IXP2000_GLOBAL_REG_VIRT_BASE | 0x0800 | (x)))
+#define RING_RX_PENDING_BASE	SCRATCH_REG(0x00)
+#define RING_RX_PENDING_HEAD	SCRATCH_REG(0x04)
+#define RING_RX_PENDING_TAIL	SCRATCH_REG(0x08)
+#define RING_RX_DONE_BASE	SCRATCH_REG(0x10)
+#define RING_RX_DONE_HEAD	SCRATCH_REG(0x14)
+#define RING_RX_DONE_TAIL	SCRATCH_REG(0x18)
+#define RING_TX_PENDING_BASE	SCRATCH_REG(0x20)
+#define RING_TX_PENDING_HEAD	SCRATCH_REG(0x24)
+#define RING_TX_PENDING_TAIL	SCRATCH_REG(0x28)
+#define RING_TX_DONE_BASE	SCRATCH_REG(0x30)
+#define RING_TX_DONE_HEAD	SCRATCH_REG(0x34)
+#define RING_TX_DONE_TAIL	SCRATCH_REG(0x38)
+
+struct ixpdev_rx_desc
+{
+	u32	buf_addr;
+	u32	buf_length;
+	u32	channel;
+	u32	pkt_length;
+};
+
+struct ixpdev_tx_desc
+{
+	u32	buf_addr;
+	u32	pkt_length;
+	u32	channel;
+	u32	unused;
+};
+
+
+#endif
diff --git a/drivers/net/ixp2000/pm3386.c b/drivers/net/ixp2000/pm3386.c
new file mode 100644
index 00000000000..5c7ab756405
--- /dev/null
+++ b/drivers/net/ixp2000/pm3386.c
@@ -0,0 +1,334 @@
+/*
+ * Helper functions for the PM3386s on the Radisys ENP2611
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <asm/io.h>
+#include "pm3386.h"
+
+/*
+ * Read from register 'reg' of PM3386 device 'pm'.
+ */
+static u16 pm3386_reg_read(int pm, int reg)
+{
+	void *_reg;
+	u16 value;
+
+	_reg = (void *)ENP2611_PM3386_0_VIRT_BASE;
+	if (pm == 1)
+		_reg = (void *)ENP2611_PM3386_1_VIRT_BASE;
+
+	value = *((volatile u16 *)(_reg + (reg << 1)));
+
+//	printk(KERN_INFO "pm3386_reg_read(%d, %.3x) = %.8x\n", pm, reg, value);
+
+	return value;
+}
+
+/*
+ * Write to register 'reg' of PM3386 device 'pm', and perform
+ * a readback from the identification register.
+ */
+static void pm3386_reg_write(int pm, int reg, u16 value)
+{
+	void *_reg;
+	u16 dummy;
+
+//	printk(KERN_INFO "pm3386_reg_write(%d, %.3x, %.8x)\n", pm, reg, value);
+
+	_reg = (void *)ENP2611_PM3386_0_VIRT_BASE;
+	if (pm == 1)
+		_reg = (void *)ENP2611_PM3386_1_VIRT_BASE;
+
+	*((volatile u16 *)(_reg + (reg << 1))) = value;
+
+	dummy = *((volatile u16 *)_reg);
+	__asm__ __volatile__("mov %0, %0" : "+r" (dummy));
+}
+
+/*
+ * Read from port 'port' register 'reg', where the registers
+ * for the different ports are 'spacing' registers apart.
+ */
+static u16 pm3386_port_reg_read(int port, int _reg, int spacing)
+{
+	int reg;
+
+	reg = _reg;
+	if (port & 1)
+		reg += spacing;
+
+	return pm3386_reg_read(port >> 1, reg);
+}
+
+/*
+ * Write to port 'port' register 'reg', where the registers
+ * for the different ports are 'spacing' registers apart.
+ */
+static void pm3386_port_reg_write(int port, int _reg, int spacing, u16 value)
+{
+	int reg;
+
+	reg = _reg;
+	if (port & 1)
+		reg += spacing;
+
+	pm3386_reg_write(port >> 1, reg, value);
+}
+
+
+void pm3386_reset(void)
+{
+	u8 mac[3][6];
+
+	/* Save programmed MAC addresses.  */
+	pm3386_get_mac(0, mac[0]);
+	pm3386_get_mac(1, mac[1]);
+	pm3386_get_mac(2, mac[2]);
+
+	/* Assert analog and digital reset.  */
+	pm3386_reg_write(0, 0x002, 0x0060);
+	pm3386_reg_write(1, 0x002, 0x0060);
+	mdelay(1);
+
+	/* Deassert analog reset.  */
+	pm3386_reg_write(0, 0x002, 0x0062);
+	pm3386_reg_write(1, 0x002, 0x0062);
+	mdelay(10);
+
+	/* Deassert digital reset.  */
+	pm3386_reg_write(0, 0x002, 0x0063);
+	pm3386_reg_write(1, 0x002, 0x0063);
+	mdelay(10);
+
+	/* Restore programmed MAC addresses.  */
+	pm3386_set_mac(0, mac[0]);
+	pm3386_set_mac(1, mac[1]);
+	pm3386_set_mac(2, mac[2]);
+
+	/* Disable carrier on all ports.  */
+	pm3386_set_carrier(0, 0);
+	pm3386_set_carrier(1, 0);
+	pm3386_set_carrier(2, 0);
+}
+
+static u16 swaph(u16 x)
+{
+	return ((x << 8) | (x >> 8)) & 0xffff;
+}
+
+void pm3386_init_port(int port)
+{
+	int pm = port >> 1;
+
+	/*
+	 * Work around ENP2611 bootloader programming MAC address
+	 * in reverse.
+	 */
+	if (pm3386_port_reg_read(port, 0x30a, 0x100) == 0x0000 &&
+	    (pm3386_port_reg_read(port, 0x309, 0x100) & 0xff00) == 0x5000) {
+		u16 temp[3];
+
+		temp[0] = pm3386_port_reg_read(port, 0x308, 0x100);
+		temp[1] = pm3386_port_reg_read(port, 0x309, 0x100);
+		temp[2] = pm3386_port_reg_read(port, 0x30a, 0x100);
+		pm3386_port_reg_write(port, 0x308, 0x100, swaph(temp[2]));
+		pm3386_port_reg_write(port, 0x309, 0x100, swaph(temp[1]));
+		pm3386_port_reg_write(port, 0x30a, 0x100, swaph(temp[0]));
+	}
+
+	/*
+	 * Initialise narrowbanding mode.  See application note 2010486
+	 * for more information.  (@@@ We also need to issue a reset
+	 * when ROOL or DOOL are detected.)
+	 */
+	pm3386_port_reg_write(port, 0x708, 0x10, 0xd055);
+	udelay(500);
+	pm3386_port_reg_write(port, 0x708, 0x10, 0x5055);
+
+	/*
+	 * SPI-3 ingress block.  Set 64 bytes SPI-3 burst size
+	 * towards SPI-3 bridge.
+	 */
+	pm3386_port_reg_write(port, 0x122, 0x20, 0x0002);
+
+	/*
+	 * Enable ingress protocol checking, and soft reset the
+	 * SPI-3 ingress block.
+	 */
+	pm3386_reg_write(pm, 0x103, 0x0003);
+	while (!(pm3386_reg_read(pm, 0x103) & 0x80))
+		;
+
+	/*
+	 * SPI-3 egress block.  Gather 12288 bytes of the current
+	 * packet in the TX fifo before initiating transmit on the
+	 * SERDES interface.  (Prevents TX underflows.)
+	 */
+	pm3386_port_reg_write(port, 0x221, 0x20, 0x0007);
+
+	/*
+	 * Enforce odd parity from the SPI-3 bridge, and soft reset
+	 * the SPI-3 egress block.
+	 */
+	pm3386_reg_write(pm, 0x203, 0x000d & ~(4 << (port & 1)));
+	while ((pm3386_reg_read(pm, 0x203) & 0x000c) != 0x000c)
+		;
+
+	/*
+	 * EGMAC block.  Set this channels to reject long preambles,
+	 * not send or transmit PAUSE frames, enable preamble checking,
+	 * disable frame length checking, enable FCS appending, enable
+	 * TX frame padding.
+	 */
+	pm3386_port_reg_write(port, 0x302, 0x100, 0x0113);
+
+	/*
+	 * Soft reset the EGMAC block.
+	 */
+	pm3386_port_reg_write(port, 0x301, 0x100, 0x8000);
+	pm3386_port_reg_write(port, 0x301, 0x100, 0x0000);
+
+	/*
+	 * Auto-sense autonegotiation status.
+	 */
+	pm3386_port_reg_write(port, 0x306, 0x100, 0x0100);
+
+	/*
+	 * Allow reception of jumbo frames.
+	 */
+	pm3386_port_reg_write(port, 0x310, 0x100, 9018);
+
+	/*
+	 * Allow transmission of jumbo frames.
+	 */
+	pm3386_port_reg_write(port, 0x336, 0x100, 9018);
+
+	/* @@@ Should set 0x337/0x437 (RX forwarding threshold.)  */
+
+	/*
+	 * Set autonegotiation parameters to 'no PAUSE, full duplex.'
+	 */
+	pm3386_port_reg_write(port, 0x31c, 0x100, 0x0020);
+
+	/*
+	 * Enable and restart autonegotiation.
+	 */
+	pm3386_port_reg_write(port, 0x318, 0x100, 0x0003);
+	pm3386_port_reg_write(port, 0x318, 0x100, 0x0002);
+}
+
+void pm3386_get_mac(int port, u8 *mac)
+{
+	u16 temp;
+
+	temp = pm3386_port_reg_read(port, 0x308, 0x100);
+	mac[0] = temp & 0xff;
+	mac[1] = (temp >> 8) & 0xff;
+
+	temp = pm3386_port_reg_read(port, 0x309, 0x100);
+	mac[2] = temp & 0xff;
+	mac[3] = (temp >> 8) & 0xff;
+
+	temp = pm3386_port_reg_read(port, 0x30a, 0x100);
+	mac[4] = temp & 0xff;
+	mac[5] = (temp >> 8) & 0xff;
+}
+
+void pm3386_set_mac(int port, u8 *mac)
+{
+	pm3386_port_reg_write(port, 0x308, 0x100, (mac[1] << 8) | mac[0]);
+	pm3386_port_reg_write(port, 0x309, 0x100, (mac[3] << 8) | mac[2]);
+	pm3386_port_reg_write(port, 0x30a, 0x100, (mac[5] << 8) | mac[4]);
+}
+
+static u32 pm3386_get_stat(int port, u16 base)
+{
+	u32 value;
+
+	value = pm3386_port_reg_read(port, base, 0x100);
+	value |= pm3386_port_reg_read(port, base + 1, 0x100) << 16;
+
+	return value;
+}
+
+void pm3386_get_stats(int port, struct net_device_stats *stats)
+{
+	/*
+	 * Snapshot statistics counters.
+	 */
+	pm3386_port_reg_write(port, 0x500, 0x100, 0x0001);
+	while (pm3386_port_reg_read(port, 0x500, 0x100) & 0x0001)
+		;
+
+	memset(stats, 0, sizeof(*stats));
+
+	stats->rx_packets = pm3386_get_stat(port, 0x510);
+	stats->tx_packets = pm3386_get_stat(port, 0x590);
+	stats->rx_bytes = pm3386_get_stat(port, 0x514);
+	stats->tx_bytes = pm3386_get_stat(port, 0x594);
+	/* @@@ Add other stats.  */
+}
+
+void pm3386_set_carrier(int port, int state)
+{
+	pm3386_port_reg_write(port, 0x703, 0x10, state ? 0x1001 : 0x0000);
+}
+
+int pm3386_is_link_up(int port)
+{
+	u16 temp;
+
+	temp = pm3386_port_reg_read(port, 0x31a, 0x100);
+	temp = pm3386_port_reg_read(port, 0x31a, 0x100);
+
+	return !!(temp & 0x0002);
+}
+
+void pm3386_enable_rx(int port)
+{
+	u16 temp;
+
+	temp = pm3386_port_reg_read(port, 0x303, 0x100);
+	temp |= 0x1000;
+	pm3386_port_reg_write(port, 0x303, 0x100, temp);
+}
+
+void pm3386_disable_rx(int port)
+{
+	u16 temp;
+
+	temp = pm3386_port_reg_read(port, 0x303, 0x100);
+	temp &= 0xefff;
+	pm3386_port_reg_write(port, 0x303, 0x100, temp);
+}
+
+void pm3386_enable_tx(int port)
+{
+	u16 temp;
+
+	temp = pm3386_port_reg_read(port, 0x303, 0x100);
+	temp |= 0x4000;
+	pm3386_port_reg_write(port, 0x303, 0x100, temp);
+}
+
+void pm3386_disable_tx(int port)
+{
+	u16 temp;
+
+	temp = pm3386_port_reg_read(port, 0x303, 0x100);
+	temp &= 0xbfff;
+	pm3386_port_reg_write(port, 0x303, 0x100, temp);
+}
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/net/ixp2000/pm3386.h b/drivers/net/ixp2000/pm3386.h
new file mode 100644
index 00000000000..fe92bb056ac
--- /dev/null
+++ b/drivers/net/ixp2000/pm3386.h
@@ -0,0 +1,28 @@
+/*
+ * Helper functions for the PM3386s on the Radisys ENP2611
+ * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
+ * Dedicated to Marija Kulikova.
+ *
+ * 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.
+ */
+
+#ifndef __PM3386_H
+#define __PM3386_H
+
+void pm3386_reset(void);
+void pm3386_init_port(int port);
+void pm3386_get_mac(int port, u8 *mac);
+void pm3386_set_mac(int port, u8 *mac);
+void pm3386_get_stats(int port, struct net_device_stats *stats);
+void pm3386_set_carrier(int port, int state);
+int pm3386_is_link_up(int port);
+void pm3386_enable_rx(int port);
+void pm3386_disable_rx(int port);
+void pm3386_enable_tx(int port);
+void pm3386_disable_tx(int port);
+
+
+#endif