[RFC PATCH v0.1] net driver: mpc52xx fec

* [RFC PATCH v0.1] net driver: mpc52xx fec
@ 2007-08-10  9:51 Domen Puncer
  2007-08-10 13:02 ` Arnaldo Carvalho de Melo
                   ` (3 more replies)
  0 siblings, 4 replies; 47+ messages in thread
From: Domen Puncer @ 2007-08-10  9:51 UTC (permalink / raw)
  To: linuxppc-embedded; +Cc: netdev

Hi!

Not for merge (yet)! But please do review.

fec_mpc52xx driver (not in-tree, but floating around) isn't in very
good shape, so I tried to change that.
Diff against original is quite big (fec_phy.c is completely rewritten)
and confuzing, so I'm including whole drivers/net/fec_mpc52xx/ .

I still have 'make CONFIG_FEC_MPC52xx_MDIO=n compile and work' on my
TODO, maybe even ethtool support.


	Domen


 arch/powerpc/boot/dts/lite5200b.dts |   18 
 arch/powerpc/sysdev/bestcomm/fec.h  |   14 
 drivers/net/fec_mpc52xx/Kconfig     |   24 
 drivers/net/fec_mpc52xx/Makefile    |    7 
 drivers/net/fec_mpc52xx/fec.c       | 1002 ++++++++++++++++++++++++++++++++++++
 drivers/net/fec_mpc52xx/fec.h       |  299 ++++++++++
 drivers/net/fec_mpc52xx/fec_phy.c   |  229 ++++++++
 drivers/net/fec_mpc52xx/fec_phy.h   |   49 +
 8 files changed, 1641 insertions(+), 1 deletion(-)

diff -pruN dummy/fec.c ./drivers/net/fec_mpc52xx/fec.c

--- dummy/fec.c	1970-01-01 01:00:00.000000000 +0100
+++ ./drivers/net/fec_mpc52xx/fec.c	2007-08-10 10:59:00.000000000 +0200
@@ -0,0 +1,1002 @@
+/*
+ * drivers/net/fec_mpc52xx/fec.c
+ *
+ * Driver for the MPC5200 Fast Ethernet Controller
+ *
+ * Originally written by Dale Farnsworth <dfarnsworth@mvista.com> and
+ * now maintained by Sylvain Munaut <tnt@246tNt.com>
+ *
+ * Copyright (C) 2007  Sylvain Munaut <tnt@246tNt.com>
+ * Copyrigth (C) 2003-2004  MontaVista, Software, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/crc32.h>
+#include <linux/hardirq.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/skbuff.h>
+
+#include <asm/of_device.h>
+#include <asm/of_platform.h>
+#include <asm/io.h>
+#include <asm/delay.h>
+#include <asm/mpc52xx.h>
+
+#include <sysdev/bestcomm/bestcomm.h>
+#include <sysdev/bestcomm/fec.h>
+
+#include "fec_phy.h"
+#include "fec.h"
+
+#define DRIVER_NAME "mpc52xx-fec"
+
+static irqreturn_t fec_interrupt(int, void *);
+static irqreturn_t fec_rx_interrupt(int, void *);
+static irqreturn_t fec_tx_interrupt(int, void *);
+static struct net_device_stats *fec_get_stats(struct net_device *);
+static void fec_set_multicast_list(struct net_device *dev);
+static void fec_hw_init(struct net_device *dev);
+static void fec_stop(struct net_device *dev);
+static void fec_start(struct net_device *dev);
+
+static u8 mpc52xx_fec_mac_addr[6];
+static u8 null_mac[6];
+
+static void fec_tx_timeout(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+
+	dev_warn(&dev->dev, "transmit timed out\n");
+
+	fec_stop(dev);
+	fec_start(dev);
+
+	priv->stats.tx_errors++;
+
+	if (!priv->tx_full)
+		netif_wake_queue(dev);
+}
+
+static void fec_set_paddr(struct net_device *dev, u8 *mac)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct mpc52xx_fec __iomem *fec = priv->fec;
+
+	out_be32(&fec->paddr1, *(u32*)(&mac[0]));
+	out_be32(&fec->paddr2, (*(u16*)(&mac[4]) << 16) | FEC_PADDR2_TYPE);
+}
+
+static void fec_get_paddr(struct net_device *dev, u8 *mac)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct mpc52xx_fec __iomem *fec = priv->fec;
+
+	*(u32*)(&mac[0]) = in_be32(&fec->paddr1);
+	*(u16*)(&mac[4]) = in_be32(&fec->paddr2) >> 16;
+}
+
+static int fec_set_mac_address(struct net_device *dev, void *addr)
+{
+	struct sockaddr *sock = (struct sockaddr *)addr;
+
+	memcpy(dev->dev_addr, sock->sa_data, dev->addr_len);
+
+	fec_set_paddr(dev, sock->sa_data);
+	return 0;
+}
+
+static void fec_free_rx_buffers(struct bcom_task *s)
+{
+	struct sk_buff *skb;
+
+	while (!bcom_queue_empty(s)) {
+		skb = bcom_retrieve_buffer(s, NULL, NULL);
+		kfree_skb(skb);
+	}
+}
+
+static int fec_alloc_rx_buffers(struct bcom_task *rxtsk)
+{
+	while (!bcom_queue_full(rxtsk)) {
+		struct sk_buff *skb;
+		struct bcom_fec_bd *bd;
+
+		skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE);
+		if (skb == 0)
+			return -EAGAIN;
+
+		/* zero out the initial receive buffers to aid debugging */
+		memset(skb->data, 0, FEC_RX_BUFFER_SIZE);
+
+		bd = (struct bcom_fec_bd *)bcom_prepare_next_buffer(rxtsk);
+
+		bd->status = FEC_RX_BUFFER_SIZE;
+		bd->skb_pa = virt_to_phys(skb->data);
+
+		bcom_submit_next_buffer(rxtsk, skb);
+	}
+
+	return 0;
+}
+
+/* based on generic_adjust_link - fs_enet-main.c */
+static void fec_adjust_link(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct phy_device *phydev = priv->phydev;
+	int new_state = 0;
+
+	if (phydev->link != PHY_DOWN) {
+		if (phydev->duplex != priv->duplex) {
+			new_state = 1;
+			priv->duplex = phydev->duplex;
+		}
+
+		if (phydev->speed != priv->speed) {
+			new_state = 1;
+			priv->speed = phydev->speed;
+		}
+
+		if (priv->link == PHY_DOWN) {
+			new_state = 1;
+			priv->link = phydev->link;
+			netif_schedule(dev);
+			netif_carrier_on(dev);
+			netif_start_queue(dev);
+		}
+
+	} else if (priv->link) {
+		new_state = 1;
+		priv->link = PHY_DOWN;
+		priv->speed = 0;
+		priv->duplex = -1;
+		netif_stop_queue(dev);
+		netif_carrier_off(dev);
+	}
+
+	if (new_state && netif_msg_link(priv)) {
+		phy_print_status(phydev);
+	}
+}
+
+static int fec_init_phy(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct phy_device *phydev;
+	char phy_id[BUS_ID_SIZE];
+
+	struct device_node *dn, *phy_dn;
+	unsigned int phy_addr;
+	const phandle *ph;
+	const unsigned int *prop;
+	struct resource res;
+	int ret;
+
+	dn = priv->ofdev->node;
+	ph = of_get_property(dn, "phy-handle", NULL);
+	if (!ph) {
+		dev_err(&dev->dev, "can't find \"phy-handle\" in device tree\n");
+		return -ENODEV;
+	}
+	phy_dn = of_find_node_by_phandle(*ph);
+
+	prop = of_get_property(phy_dn, "reg", NULL);
+	ret = of_address_to_resource(phy_dn->parent, 0, &res);
+	if (ret) {
+		dev_err(&dev->dev, "of_address_to_resource failed\n");
+		return ret;
+	}
+
+	phy_addr = *prop;
+	of_node_put(phy_dn);
+
+	snprintf(phy_id, BUS_ID_SIZE, PHY_ID_FMT, res.start, phy_addr);
+
+	priv->link = PHY_DOWN;
+	priv->speed = 0;
+	priv->duplex = -1;
+
+	phydev = phy_connect(dev, phy_id, &fec_adjust_link, 0, PHY_INTERFACE_MODE_MII);
+	if (IS_ERR(phydev)) {
+		printk(KERN_ERR "%s: phy_connect failed\n", dev->name);
+		return PTR_ERR(phydev);
+	}
+
+	phydev->advertising &= ADVERTISED_10baseT_Half | ADVERTISED_100baseT_Half;
+
+	priv->phydev = phydev;
+
+	return 0;
+}
+
+static int fec_open(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	int err = -EBUSY;
+
+	if (request_irq(dev->irq, &fec_interrupt, IRQF_DISABLED | IRQF_SHARED,
+	                DRIVER_NAME "_ctrl", dev)) {
+		dev_err(&dev->dev, "ctrl interrupt request failed\n");
+		goto out;
+	}
+	if (request_irq(priv->r_irq, &fec_rx_interrupt, IRQF_DISABLED,
+	                DRIVER_NAME "_rx", dev)) {
+		dev_err(&dev->dev, "rx interrupt request failed\n");
+		goto free_ctrl_irq;
+	}
+	if (request_irq(priv->t_irq, &fec_tx_interrupt, IRQF_DISABLED,
+	                DRIVER_NAME "_tx", dev)) {
+		dev_err(&dev->dev, "tx interrupt request failed\n");
+		goto free_2irqs;
+	}
+
+	bcom_fec_rx_reset(priv->rx_dmatsk);
+	bcom_fec_tx_reset(priv->tx_dmatsk);
+
+	err = fec_alloc_rx_buffers(priv->rx_dmatsk);
+	if (err) {
+		dev_err(&dev->dev, "fec_alloc_rx_buffers failed\n");
+		goto free_irqs;
+	}
+
+	err = fec_init_phy(dev);
+	if (err) {
+		dev_err(&dev->dev, "fec_init_phy failed\n");
+		goto free_skbs;
+	}
+	bcom_enable(priv->rx_dmatsk);
+	bcom_enable(priv->tx_dmatsk);
+
+	/* reset phy - this also wakes it from PDOWN */
+	phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
+	phy_start(priv->phydev);
+
+	fec_start(dev);
+
+	netif_start_queue(dev);
+
+	return 0;
+
+ free_skbs:
+	fec_free_rx_buffers(priv->rx_dmatsk);
+
+ free_irqs:
+	free_irq(priv->t_irq, dev);
+ free_2irqs:
+	free_irq(priv->r_irq, dev);
+ free_ctrl_irq:
+	free_irq(dev->irq, dev);
+ out:
+
+	return err;
+}
+
+static int fec_close(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+
+	netif_stop_queue(dev);
+
+	fec_stop(dev);
+
+	fec_free_rx_buffers(priv->rx_dmatsk);
+
+	phy_disconnect(priv->phydev);
+
+	free_irq(dev->irq, dev);
+	free_irq(priv->r_irq, dev);
+	free_irq(priv->t_irq, dev);
+
+	/* power down phy */
+	phy_stop(priv->phydev);
+	phy_write(priv->phydev, MII_BMCR, BMCR_PDOWN);
+
+	return 0;
+}
+
+/* This will only be invoked if your driver is _not_ in XOFF state.
+ * What this means is that you need not check it, and that this
+ * invariant will hold if you make sure that the netif_*_queue()
+ * calls are done at the proper times.
+ */
+static int fec_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct bcom_fec_bd *bd;
+
+	if (bcom_queue_full(priv->tx_dmatsk)) {
+		if (net_ratelimit())
+			dev_err(&dev->dev, "transmit queue overrun\n");
+		return 1;
+	}
+
+	spin_lock_irq(&priv->lock);
+	dev->trans_start = jiffies;
+
+	bd = (struct bcom_fec_bd *)
+		bcom_prepare_next_buffer(priv->tx_dmatsk);
+
+	bd->status = skb->len | BCOM_FEC_TX_BD_TFD | BCOM_FEC_TX_BD_INT;
+	bd->skb_pa = virt_to_phys(skb->data);
+
+	bcom_submit_next_buffer(priv->tx_dmatsk, skb);
+
+	if (bcom_queue_full(priv->tx_dmatsk)) {
+		priv->tx_full = 1;
+		netif_stop_queue(dev);
+	}
+
+	spin_unlock_irq(&priv->lock);
+
+	return 0;
+}
+
+/* This handles BestComm transmit task interrupts
+ */
+static irqreturn_t fec_tx_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct fec_priv *priv = netdev_priv(dev);
+
+	spin_lock(&priv->lock);
+
+	while (bcom_buffer_done(priv->tx_dmatsk)) {
+		struct sk_buff *skb;
+		skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL, NULL);
+
+		priv->tx_full = 0;
+		dev_kfree_skb_irq(skb);
+	}
+
+	if (netif_queue_stopped(dev) && !priv->tx_full)
+		netif_wake_queue(dev);
+
+	spin_unlock(&priv->lock);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t fec_rx_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct fec_priv *priv = netdev_priv(dev);
+
+	while (bcom_buffer_done(priv->rx_dmatsk)) {
+		struct sk_buff *skb;
+		struct sk_buff *rskb;
+		struct bcom_fec_bd *bd;
+		u32 status;
+
+		rskb = bcom_retrieve_buffer(priv->rx_dmatsk, &status, NULL);
+
+		/* Test for errors in received frame */
+		if (status & BCOM_FEC_RX_BD_ERRORS) {
+			/* Drop packet and reuse the buffer */
+			bd = (struct bcom_fec_bd *)
+				bcom_prepare_next_buffer(priv->rx_dmatsk);
+
+			bd->status = FEC_RX_BUFFER_SIZE;
+			bd->skb_pa = virt_to_phys(rskb->data);
+
+			bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
+
+			priv->stats.rx_dropped++;
+
+			continue;
+		}
+
+		/* skbs are allocated on open, so now we allocate a new one,
+		 * and remove the old (with the packet) */
+		skb = dev_alloc_skb(FEC_RX_BUFFER_SIZE);
+		if (skb) {
+			/* Process the received skb */
+			int length = status & BCOM_FEC_RX_BD_LEN_MASK;
+
+			skb_put(rskb, length - 4);	/* length without CRC32 */
+
+			rskb->dev = dev;
+			rskb->protocol = eth_type_trans(rskb, dev);
+
+			netif_rx(rskb);
+			dev->last_rx = jiffies;
+		} else {
+			/* Can't get a new one : reuse the same & drop pkt */
+			dev_notice(&dev->dev, "Memory squeeze, dropping packet.\n");
+			priv->stats.rx_dropped++;
+
+			skb = rskb;
+		}
+
+		bd = (struct bcom_fec_bd *)
+			bcom_prepare_next_buffer(priv->rx_dmatsk);
+
+		bd->status = FEC_RX_BUFFER_SIZE;
+		bd->skb_pa = virt_to_phys(skb->data);
+
+		bcom_submit_next_buffer(priv->rx_dmatsk, skb);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t fec_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct fec_priv *priv = netdev_priv(dev);
+	struct mpc52xx_fec __iomem *fec = priv->fec;
+	u32 ievent;
+
+	ievent = in_be32(&fec->ievent);
+
+	ievent &= ~FEC_IEVENT_MII;	/* mii is handled separately */
+	if (!ievent)
+		return IRQ_NONE;
+
+	out_be32(&fec->ievent, ievent);		/* clear pending events */
+
+	if (ievent & ~(FEC_IEVENT_RFIFO_ERROR | FEC_IEVENT_XFIFO_ERROR)) {
+		if (ievent & ~FEC_IEVENT_TFINT)
+			dev_dbg(&dev->dev, "ievent: %08x\n", ievent);
+		return IRQ_HANDLED;
+	}
+
+	if (net_ratelimit() && (ievent & FEC_IEVENT_RFIFO_ERROR))
+		dev_warn(&dev->dev, "FEC_IEVENT_RFIFO_ERROR\n");
+	if (net_ratelimit() && (ievent & FEC_IEVENT_XFIFO_ERROR))
+		dev_warn(&dev->dev, "FEC_IEVENT_XFIFO_ERROR\n");
+
+	fec_stop(dev);
+	fec_hw_init(dev);
+	fec_start(dev);
+
+	netif_wake_queue(dev);
+	return IRQ_HANDLED;
+}
+
+/*
+ * Get the current statistics.
+ * This may be called with the card open or closed.
+ */
+static struct net_device_stats *fec_get_stats(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct net_device_stats *stats = &priv->stats;
+	struct mpc52xx_fec __iomem *fec = priv->fec;
+
+/*	printk(KERN_ALERT "%s: %i, rmon_r_octets: %i, rmon_r_packets: %i, "
+			"ieee_r_octets_ok: %i, ieee_r_frame_ok: %i, "
+			"%i\n",
+			__func__, __LINE__,
+			in_be32(&fec->rmon_r_octets), in_be32(&fec->rmon_r_packets),
+			in_be32(&fec->ieee_r_octets_ok), in_be32(&fec->ieee_r_frame_ok),
+			0);
+*/
+	stats->rx_bytes = in_be32(&fec->rmon_r_octets);
+	stats->rx_packets = in_be32(&fec->rmon_r_packets);
+	stats->rx_errors = in_be32(&fec->rmon_r_crc_align) +
+		in_be32(&fec->rmon_r_undersize) +
+		in_be32(&fec->rmon_r_oversize) +
+		in_be32(&fec->rmon_r_frag) +
+		in_be32(&fec->rmon_r_jab);
+
+	stats->tx_bytes = in_be32(&fec->rmon_t_octets);
+	stats->tx_packets = in_be32(&fec->rmon_t_packets);
+	stats->tx_errors = in_be32(&fec->rmon_t_crc_align) +
+		in_be32(&fec->rmon_t_undersize) +
+		in_be32(&fec->rmon_t_oversize) +
+		in_be32(&fec->rmon_t_frag) +
+		in_be32(&fec->rmon_t_jab);
+
+	stats->multicast = in_be32(&fec->rmon_r_mc_pkt);
+	stats->collisions = in_be32(&fec->rmon_t_col);
+
+	/* detailed rx_errors: */
+	stats->rx_length_errors = in_be32(&fec->rmon_r_undersize)
+					+ in_be32(&fec->rmon_r_oversize)
+					+ in_be32(&fec->rmon_r_frag)
+					+ in_be32(&fec->rmon_r_jab);
+	stats->rx_over_errors = in_be32(&fec->r_macerr);
+	stats->rx_crc_errors = in_be32(&fec->ieee_r_crc);
+	stats->rx_frame_errors = in_be32(&fec->ieee_r_align);
+	stats->rx_fifo_errors = in_be32(&fec->rmon_r_drop);
+	stats->rx_missed_errors = in_be32(&fec->rmon_r_drop);
+
+	/* detailed tx_errors: */
+	stats->tx_aborted_errors = 0;
+	stats->tx_carrier_errors = in_be32(&fec->ieee_t_cserr);
+	stats->tx_fifo_errors = in_be32(&fec->rmon_t_drop);
+	stats->tx_heartbeat_errors = in_be32(&fec->ieee_t_sqe);
+	stats->tx_window_errors = in_be32(&fec->ieee_t_lcol);
+
+	return stats;
+}
+
+/*
+ * Read MIB counters in order to reset them,
+ * then zero all the stats fields in memory
+ */
+static void fec_reset_stats(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct mpc52xx_fec __iomem *fec = priv->fec;
+
+	out_be32(&fec->mib_control, FEC_MIB_DISABLE);
+	memset_io(&fec->rmon_t_drop, 0,
+			(u32)&fec->reserved10 - (u32)&fec->rmon_t_drop);
+	out_be32(&fec->mib_control, 0);
+
+	memset(&priv->stats, 0, sizeof(priv->stats));
+}
+
+/*
+ * Set or clear the multicast filter for this adaptor.
+ */
+static void fec_set_multicast_list(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct mpc52xx_fec __iomem *fec = priv->fec;
+	u32 rx_control;
+
+	rx_control = in_be32(&fec->r_cntrl);
+
+	if (dev->flags & IFF_PROMISC) {
+		rx_control |= FEC_RCNTRL_PROM;
+		out_be32(&fec->r_cntrl, rx_control);
+	} else {
+		rx_control &= ~FEC_RCNTRL_PROM;
+		out_be32(&fec->r_cntrl, rx_control);
+
+		if (dev->flags & IFF_ALLMULTI) {
+			out_be32(&fec->gaddr1, 0xffffffff);
+			out_be32(&fec->gaddr2, 0xffffffff);
+		} else {
+			u32 crc;
+			int i;
+			struct dev_mc_list *dmi;
+			u32 gaddr1 = 0x00000000;
+			u32 gaddr2 = 0x00000000;
+
+			dmi = dev->mc_list;
+			for (i=0; i<dev->mc_count; i++) {
+				crc = ether_crc_le(6, dmi->dmi_addr) >> 26;
+				if (crc >= 32)
+					gaddr1 |= 1 << (crc-32);
+				else
+					gaddr2 |= 1 << crc;
+				dmi = dmi->next;
+			}
+			out_be32(&fec->gaddr1, gaddr1);
+			out_be32(&fec->gaddr2, gaddr2);
+		}
+	}
+}
+
+static void __init fec_str2mac(char *str, unsigned char *mac)
+{
+	int i;
+	u64 val64;
+
+	val64 = simple_strtoull(str, NULL, 16);
+
+	for (i = 0; i < 6; i++)
+		mac[5-i] = val64 >> (i*8);
+}
+
+static int __init mpc52xx_fec_mac_setup(char *mac_address)
+{
+	fec_str2mac(mac_address, mpc52xx_fec_mac_addr);
+	return 0;
+}
+
+/* XXX do we need this? */
+__setup("mpc52xx-mac=", mpc52xx_fec_mac_setup);
+
+/**
+ * fec_hw_init
+ * @dev: network device
+ *
+ * Setup various hardware setting, only needed once on start
+ */
+static void fec_hw_init(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct mpc52xx_fec __iomem *fec = priv->fec;
+	int i;
+
+	/* Whack a reset.  We should wait for this. */
+	out_be32(&fec->ecntrl, FEC_ECNTRL_RESET);
+	for (i = 0; i < FEC_RESET_DELAY; ++i) {
+		if ((in_be32(&fec->ecntrl) & FEC_ECNTRL_RESET) == 0)
+			break;
+		udelay(1);
+	}
+	if (i == FEC_RESET_DELAY)
+		dev_err(&dev->dev, "FEC Reset timeout!\n");
+
+	/* set pause to 0x20 frames */
+	out_be32(&fec->op_pause, FEC_OP_PAUSE_OPCODE | 0x20);
+
+	/* high service request will be deasserted when there's < 7 bytes in fifo
+	 * low service request will be deasserted when there's < 4*7 bytes in fifo
+	 */
+	out_be32(&fec->rfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7);
+	out_be32(&fec->tfifo_cntrl, FEC_FIFO_CNTRL_FRAME | FEC_FIFO_CNTRL_LTG_7);
+
+	/* alarm when <= x bytes in FIFO */
+	out_be32(&fec->rfifo_alarm, 0x0000030c);
+	out_be32(&fec->tfifo_alarm, 0x00000100);
+
+	/* begin transmittion when 256 bytes are in FIFO (or EOF or FIFO full) */
+	out_be32(&fec->x_wmrk, FEC_FIFO_WMRK_256B);
+
+	/* enable crc generation */
+	out_be32(&fec->xmit_fsm, FEC_XMIT_FSM_APPEND_CRC | FEC_XMIT_FSM_ENABLE_CRC);
+	out_be32(&fec->iaddr1, 0x00000000);	/* No individual filter */
+	out_be32(&fec->iaddr2, 0x00000000);	/* No individual filter */
+
+	/* set phy speed and enable MII interrupt
+	 * this can't be done in phy driver, since it needs to be called
+	 * before fec stuff (even on resume) */
+	set_phy_speed(fec, priv->phy_speed);
+	out_be32(&fec->imask, in_be32(&fec->imask) | FEC_IMASK_MII);
+}
+
+/**
+ * fec_start
+ * @dev: network device
+ *
+ * This function is called to start or restart the FEC during a link
+ * change.  This happens on fifo errors or when switching between half
+ * and full duplex.
+ */
+static void fec_start(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct mpc52xx_fec __iomem *fec = priv->fec;
+	u32 rcntrl;
+	u32 tcntrl;
+	u32 tmp;
+
+	/* clear sticky error bits */
+	tmp = FEC_FIFO_STATUS_ERR | FEC_FIFO_STATUS_UF | FEC_FIFO_STATUS_OF;
+	out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status) & tmp);
+	out_be32(&fec->tfifo_status, in_be32(&fec->tfifo_status) & tmp);
+
+	/* FIFOs will reset on fec_enable */
+	out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_ENABLE_IS_RESET);
+
+	/* Set station address. */
+	fec_set_paddr(dev, dev->dev_addr);
+
+	fec_set_multicast_list(dev);
+
+	/* set max frame len, enable flow control, select mii mode */
+	rcntrl = FEC_RX_BUFFER_SIZE << 16;	/* max frame length */
+	rcntrl |= FEC_RCNTRL_FCE;
+	rcntrl |= MII_RCNTL_MODE;
+	if (priv->duplex == DUPLEX_FULL)
+		tcntrl = FEC_TCNTRL_FDEN;	/* FD enable */
+	else {
+		rcntrl |= FEC_RCNTRL_DRT;	/* disable Rx on Tx (HD) */
+		tcntrl = 0;
+	}
+	out_be32(&fec->r_cntrl, rcntrl);
+	out_be32(&fec->x_cntrl, tcntrl);
+
+	/* Clear any outstanding interrupt. */
+	out_be32(&fec->ievent, 0xffffffff);
+
+	/* Enable interrupts we wish to service. */
+	out_be32(&fec->imask, FEC_IMASK_ENABLE);
+
+	/* And last, enable the transmit and receive processing. */
+	out_be32(&fec->ecntrl, FEC_ECNTRL_ETHER_EN);
+	out_be32(&fec->r_des_active, 0x01000000);
+
+	priv->tx_full = 0;
+}
+
+/**
+ * fec_stop
+ * @dev: network device
+ *
+ * stop all activity on fec and empty dma buffers
+ */
+static void fec_stop(struct net_device *dev)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct mpc52xx_fec __iomem *fec = priv->fec;
+	unsigned long timeout;
+
+	out_be32(&fec->imask, FEC_IMASK_MII);	/* disable all but MII interrupt */
+
+	/* Disable the rx and tx tasks. */
+	bcom_disable(priv->rx_dmatsk);
+
+	/* Wait for queues to drain, but only if we're in process context */
+	if (!in_interrupt()) {
+		timeout = jiffies + 2*HZ;
+		while (time_before(jiffies, timeout) &&
+				(!bcom_queue_empty(priv->tx_dmatsk) ||
+				!bcom_queue_empty(priv->rx_dmatsk))) {
+			set_current_state(TASK_INTERRUPTIBLE);
+			schedule_timeout(HZ/10);
+		}
+		if (time_after_eq(jiffies, timeout))
+			dev_err(&dev->dev, "queues didn't drain\n");
+	}
+
+	bcom_disable(priv->tx_dmatsk);
+
+	/* Stop FEC */
+	out_be32(&fec->ecntrl, in_be32(&fec->ecntrl) & ~FEC_ECNTRL_ETHER_EN);
+
+	return;
+}
+
+static int fec_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+{
+	struct fec_priv *priv = netdev_priv(dev);
+	struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data;
+
+	return phy_mii_ioctl(priv->phydev, mii, cmd);
+}
+
+/* ======================================================================== */
+/* OF Driver                                                                */
+/* ======================================================================== */
+
+static int __devinit
+mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
+{
+	int rv;
+	struct net_device *ndev;
+	struct fec_priv *priv = NULL;
+	struct resource mem;
+
+	phys_addr_t rx_fifo;
+	phys_addr_t tx_fifo;
+
+	/* Get the ether ndev & it's private zone */
+	ndev = alloc_etherdev(sizeof(struct fec_priv));
+	if (!ndev)
+		return -ENOMEM;
+
+	priv = netdev_priv(ndev);
+
+	priv->ofdev = op;
+
+	/* Reserve FEC control zone */
+	rv = of_address_to_resource(op->node, 0, &mem);
+	if (rv) {
+		printk(KERN_ERR DRIVER_NAME ": "
+				"Error while parsing device node resource\n" );
+		return rv;
+	}
+	if ((mem.end - mem.start + 1) != sizeof(struct mpc52xx_fec)) {
+		printk(KERN_ERR DRIVER_NAME 
+			" - invalid resource size (%lx != %x), check mpc52xx_devices.c\n",
+			(unsigned long)(mem.end - mem.start + 1), sizeof(struct mpc52xx_fec));
+		return -EINVAL;
+	}
+
+	if (!request_mem_region(mem.start, sizeof(struct mpc52xx_fec), DRIVER_NAME))
+		return -EBUSY;
+
+	/* Init ether ndev with what we have */
+	ndev->open		= fec_open;
+	ndev->stop		= fec_close;
+	ndev->hard_start_xmit	= fec_hard_start_xmit;
+	ndev->do_ioctl		= fec_ioctl;
+	ndev->get_stats		= fec_get_stats;
+	ndev->set_mac_address	= fec_set_mac_address;
+	ndev->set_multicast_list = fec_set_multicast_list;
+	ndev->tx_timeout	= fec_tx_timeout;
+	ndev->watchdog_timeo	= FEC_WATCHDOG_TIMEOUT;
+	ndev->flags &= ~IFF_RUNNING;
+	ndev->base_addr		= mem.start;
+
+	priv->t_irq = priv->r_irq = ndev->irq = NO_IRQ; /* IRQ are free for now */
+	
+	spin_lock_init(&priv->lock);
+
+	/* ioremap the zones */
+	priv->fec = ioremap(mem.start, sizeof(struct mpc52xx_fec));
+	
+	if (!priv->fec) {
+		rv = -ENOMEM;
+		goto probe_error;
+	}
+
+	/* Bestcomm init */
+	rx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, rfifo_data);
+	tx_fifo = ndev->base_addr + offsetof(struct mpc52xx_fec, tfifo_data);
+
+	priv->rx_dmatsk = bcom_fec_rx_init(FEC_RX_NUM_BD, rx_fifo, FEC_RX_BUFFER_SIZE);
+	priv->tx_dmatsk = bcom_fec_tx_init(FEC_TX_NUM_BD, tx_fifo);
+
+	if (!priv->rx_dmatsk || !priv->tx_dmatsk) {
+		printk(KERN_ERR DRIVER_NAME ": Can not init SDMA tasks\n" );
+		rv = -ENOMEM;
+		goto probe_error;
+	}
+
+	/* Get the IRQ we need one by one */
+		/* Control */
+	ndev->irq = irq_of_parse_and_map(op->node, 0);
+
+		/* RX */
+	priv->r_irq = bcom_get_task_irq(priv->rx_dmatsk);
+
+		/* TX */
+	priv->t_irq = bcom_get_task_irq(priv->tx_dmatsk);
+
+	/* MAC address init */
+	if (memcmp(mpc52xx_fec_mac_addr, null_mac, 6) != 0)
+		memcpy(ndev->dev_addr, mpc52xx_fec_mac_addr, 6);
+	else
+		fec_get_paddr(ndev, ndev->dev_addr);
+
+	/* Phy speed */
+	priv->phy_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1;
+
+	priv->msg_enable = (NETIF_MSG_IFUP << 1) - 1;
+	priv->duplex = DUPLEX_HALF;
+
+	/* Hardware init */
+	fec_hw_init(ndev);
+
+	fec_reset_stats(ndev);
+
+	/* Register the new network device */
+	rv = register_netdev(ndev);
+	if (rv < 0)
+		goto probe_error;
+
+	/* We're done ! */
+	dev_set_drvdata(&op->dev, ndev);
+
+	return 0;
+
+
+	/* Error handling - free everything that might be allocated */
+probe_error:
+
+	irq_dispose_mapping(ndev->irq);
+
+	if (priv->rx_dmatsk)
+		bcom_fec_rx_release(priv->rx_dmatsk);
+	if (priv->tx_dmatsk)
+		bcom_fec_tx_release(priv->tx_dmatsk);
+
+	if (priv->fec)
+		iounmap(priv->fec);
+
+	release_mem_region(mem.start, sizeof(struct mpc52xx_fec));
+
+	free_netdev(ndev);
+
+	return rv;
+}
+
+static int
+mpc52xx_fec_remove(struct of_device *op)
+{
+	struct net_device *ndev;
+	struct fec_priv *priv;
+	
+	ndev = dev_get_drvdata(&op->dev);
+	if (!ndev)
+		return 0;
+	priv = netdev_priv(ndev);
+
+	unregister_netdev(ndev);
+	
+	irq_dispose_mapping(ndev->irq);
+
+	bcom_fec_rx_release(priv->rx_dmatsk);
+	bcom_fec_tx_release(priv->tx_dmatsk);
+
+	iounmap(priv->fec);
+	
+	release_mem_region(ndev->base_addr, sizeof(struct mpc52xx_fec));
+
+	free_netdev(ndev);
+	
+	dev_set_drvdata(&op->dev, NULL);
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int mpc52xx_fec_of_suspend(struct of_device *op, pm_message_t state)
+{
+	struct net_device *dev = dev_get_drvdata(&op->dev);
+
+	if (netif_running(dev))
+		fec_close(dev);
+
+	return 0;
+}
+
+static int mpc52xx_fec_of_resume(struct of_device *op)
+{
+	struct net_device *dev = dev_get_drvdata(&op->dev);
+
+	fec_hw_init(dev);
+	fec_reset_stats(dev);
+
+	if (netif_running(dev))
+		fec_open(dev);
+
+	return 0;
+}
+#endif
+
+static struct of_device_id mpc52xx_fec_match[] = {
+	{
+		.type		= "network",
+		.compatible	= "mpc5200-fec",
+	},
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, mpc52xx_fec_match);
+
+static struct of_platform_driver mpc52xx_fec_driver = {
+	.owner		= THIS_MODULE,
+	.name		= DRIVER_NAME,
+	.match_table	= mpc52xx_fec_match,
+	.probe		= mpc52xx_fec_probe,
+	.remove		= mpc52xx_fec_remove,
+#ifdef CONFIG_PM
+	.suspend	= mpc52xx_fec_of_suspend,
+	.resume		= mpc52xx_fec_of_resume,
+#endif
+};
+
+
+/* ======================================================================== */
+/* Module                                                                   */
+/* ======================================================================== */
+
+static int __init
+mpc52xx_fec_init(void)
+{
+	int ret;
+	if ((ret = fec_mdio_init())) {
+		printk(KERN_ERR "%s: %i fec_mdio_init failed\n", __func__, __LINE__);
+		return ret;
+	}
+
+	return of_register_platform_driver(&mpc52xx_fec_driver);
+}
+
+static void __exit
+mpc52xx_fec_exit(void)
+{
+	of_unregister_platform_driver(&mpc52xx_fec_driver);
+	fec_mdio_exit();
+}
+
+
+module_init(mpc52xx_fec_init);
+module_exit(mpc52xx_fec_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Dale Farnsworth");
+MODULE_DESCRIPTION("Ethernet driver for the Freescale MPC52xx FEC");
+
diff -pruN dummy/fec.h ./drivers/net/fec_mpc52xx/fec.h
--- dummy/fec.h	1970-01-01 01:00:00.000000000 +0100
+++ ./drivers/net/fec_mpc52xx/fec.h	2007-08-10 11:24:37.000000000 +0200
@@ -0,0 +1,299 @@
+/*
+ * drivers/net/fec_mpc52xx/fec.h
+ *
+ * Driver for the MPC5200 Fast Ethernet Controller
+ *
+ * Author: Dale Farnsworth <dfarnsworth@mvista.com>
+ *
+ * 2003-2004 (c) MontaVista, Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#ifndef __DRIVERS_NET_MPC52XX_FEC_H__
+#define __DRIVERS_NET_MPC52XX_FEC_H__
+
+#include <linux/mii.h> // XXX, still needed?
+#include <linux/phy.h>
+
+/* Tunable constant */
+/* FEC_RX_BUFFER_SIZE includes 4 bytes for CRC32 */
+#define FEC_RX_BUFFER_SIZE	1522	/* max receive packet size */
+#define FEC_RX_NUM_BD		64
+#define FEC_TX_NUM_BD		64
+
+#define FEC_RESET_DELAY		50 	/* uS */
+
+#define FEC_WATCHDOG_TIMEOUT	((400*HZ)/1000)
+
+struct fec_priv {
+	int duplex;
+	int tx_full;
+	int r_irq;
+	int t_irq;
+	struct mpc52xx_fec __iomem *fec;
+	struct bcom_task *rx_dmatsk;
+	struct bcom_task *tx_dmatsk;
+	spinlock_t lock;
+	struct net_device_stats stats;
+	int msg_enable;
+#ifdef CONFIG_FEC_MPC52xx_MDIO
+	uint phy_speed;
+
+	struct phy_device *phydev;
+	enum phy_state link;
+	int speed;
+
+	struct of_device *ofdev;
+#endif	/* CONFIG_FEC_MPC52xx_MDIO */
+};
+
+
+/* ======================================================================== */
+/* Hardware register sets & bits                                            */
+/* ======================================================================== */
+
+struct mpc52xx_fec {
+	u32 fec_id;			/* FEC + 0x000 */
+	u32 ievent;			/* FEC + 0x004 */
+	u32 imask;			/* FEC + 0x008 */
+
+	u32 reserved0[1];		/* FEC + 0x00C */
+	u32 r_des_active;		/* FEC + 0x010 */
+	u32 x_des_active;		/* FEC + 0x014 */
+	u32 r_des_active_cl;		/* FEC + 0x018 */
+	u32 x_des_active_cl;		/* FEC + 0x01C */
+	u32 ivent_set;			/* FEC + 0x020 */
+	u32 ecntrl;			/* FEC + 0x024 */
+
+	u32 reserved1[6];		/* FEC + 0x028-03C */
+	u32 mii_data;			/* FEC + 0x040 */
+	u32 mii_speed;			/* FEC + 0x044 */
+	u32 mii_status;			/* FEC + 0x048 */
+
+	u32 reserved2[5];		/* FEC + 0x04C-05C */
+	u32 mib_data;			/* FEC + 0x060 */
+	u32 mib_control;		/* FEC + 0x064 */
+
+	u32 reserved3[6];		/* FEC + 0x068-7C */
+	u32 r_activate;			/* FEC + 0x080 */
+	u32 r_cntrl;			/* FEC + 0x084 */
+	u32 r_hash;			/* FEC + 0x088 */
+	u32 r_data;			/* FEC + 0x08C */
+	u32 ar_done;			/* FEC + 0x090 */
+	u32 r_test;			/* FEC + 0x094 */
+	u32 r_mib;			/* FEC + 0x098 */
+	u32 r_da_low;			/* FEC + 0x09C */
+	u32 r_da_high;			/* FEC + 0x0A0 */
+
+	u32 reserved4[7];		/* FEC + 0x0A4-0BC */
+	u32 x_activate;			/* FEC + 0x0C0 */
+	u32 x_cntrl;			/* FEC + 0x0C4 */
+	u32 backoff;			/* FEC + 0x0C8 */
+	u32 x_data;			/* FEC + 0x0CC */
+	u32 x_status;			/* FEC + 0x0D0 */
+	u32 x_mib;			/* FEC + 0x0D4 */
+	u32 x_test;			/* FEC + 0x0D8 */
+	u32 fdxfc_da1;			/* FEC + 0x0DC */
+	u32 fdxfc_da2;			/* FEC + 0x0E0 */
+	u32 paddr1;			/* FEC + 0x0E4 */
+	u32 paddr2;			/* FEC + 0x0E8 */
+	u32 op_pause;			/* FEC + 0x0EC */
+
+	u32 reserved5[4];		/* FEC + 0x0F0-0FC */
+	u32 instr_reg;			/* FEC + 0x100 */
+	u32 context_reg;		/* FEC + 0x104 */
+	u32 test_cntrl;			/* FEC + 0x108 */
+	u32 acc_reg;			/* FEC + 0x10C */
+	u32 ones;			/* FEC + 0x110 */
+	u32 zeros;			/* FEC + 0x114 */
+	u32 iaddr1;			/* FEC + 0x118 */
+	u32 iaddr2;			/* FEC + 0x11C */
+	u32 gaddr1;			/* FEC + 0x120 */
+	u32 gaddr2;			/* FEC + 0x124 */
+	u32 random;			/* FEC + 0x128 */
+	u32 rand1;			/* FEC + 0x12C */
+	u32 tmp;			/* FEC + 0x130 */
+
+	u32 reserved6[3];		/* FEC + 0x134-13C */
+	u32 fifo_id;			/* FEC + 0x140 */
+	u32 x_wmrk;			/* FEC + 0x144 */
+	u32 fcntrl;			/* FEC + 0x148 */
+	u32 r_bound;			/* FEC + 0x14C */
+	u32 r_fstart;			/* FEC + 0x150 */
+	u32 r_count;			/* FEC + 0x154 */
+	u32 r_lag;			/* FEC + 0x158 */
+	u32 r_read;			/* FEC + 0x15C */
+	u32 r_write;			/* FEC + 0x160 */
+	u32 x_count;			/* FEC + 0x164 */
+	u32 x_lag;			/* FEC + 0x168 */
+	u32 x_retry;			/* FEC + 0x16C */
+	u32 x_write;			/* FEC + 0x170 */
+	u32 x_read;			/* FEC + 0x174 */
+
+	u32 reserved7[2];		/* FEC + 0x178-17C */
+	u32 fm_cntrl;			/* FEC + 0x180 */
+	u32 rfifo_data;			/* FEC + 0x184 */
+	u32 rfifo_status;		/* FEC + 0x188 */
+	u32 rfifo_cntrl;		/* FEC + 0x18C */
+	u32 rfifo_lrf_ptr;		/* FEC + 0x190 */
+	u32 rfifo_lwf_ptr;		/* FEC + 0x194 */
+	u32 rfifo_alarm;		/* FEC + 0x198 */
+	u32 rfifo_rdptr;		/* FEC + 0x19C */
+	u32 rfifo_wrptr;		/* FEC + 0x1A0 */
+	u32 tfifo_data;			/* FEC + 0x1A4 */
+	u32 tfifo_status;		/* FEC + 0x1A8 */
+	u32 tfifo_cntrl;		/* FEC + 0x1AC */
+	u32 tfifo_lrf_ptr;		/* FEC + 0x1B0 */
+	u32 tfifo_lwf_ptr;		/* FEC + 0x1B4 */
+	u32 tfifo_alarm;		/* FEC + 0x1B8 */
+	u32 tfifo_rdptr;		/* FEC + 0x1BC */
+	u32 tfifo_wrptr;		/* FEC + 0x1C0 */
+
+	u32 reset_cntrl;		/* FEC + 0x1C4 */
+	u32 xmit_fsm;			/* FEC + 0x1C8 */
+
+	u32 reserved8[3];		/* FEC + 0x1CC-1D4 */
+	u32 rdes_data0;			/* FEC + 0x1D8 */
+	u32 rdes_data1;			/* FEC + 0x1DC */
+	u32 r_length;			/* FEC + 0x1E0 */
+	u32 x_length;			/* FEC + 0x1E4 */
+	u32 x_addr;			/* FEC + 0x1E8 */
+	u32 cdes_data;			/* FEC + 0x1EC */
+	u32 status;			/* FEC + 0x1F0 */
+	u32 dma_control;		/* FEC + 0x1F4 */
+	u32 des_cmnd;			/* FEC + 0x1F8 */
+	u32 data;			/* FEC + 0x1FC */
+
+	u32 rmon_t_drop;		/* FEC + 0x200 */
+	u32 rmon_t_packets;		/* FEC + 0x204 */
+	u32 rmon_t_bc_pkt;		/* FEC + 0x208 */
+	u32 rmon_t_mc_pkt;		/* FEC + 0x20C */
+	u32 rmon_t_crc_align;		/* FEC + 0x210 */
+	u32 rmon_t_undersize;		/* FEC + 0x214 */
+	u32 rmon_t_oversize;		/* FEC + 0x218 */
+	u32 rmon_t_frag;		/* FEC + 0x21C */
+	u32 rmon_t_jab;			/* FEC + 0x220 */
+	u32 rmon_t_col;			/* FEC + 0x224 */
+	u32 rmon_t_p64;			/* FEC + 0x228 */
+	u32 rmon_t_p65to127;		/* FEC + 0x22C */
+	u32 rmon_t_p128to255;		/* FEC + 0x230 */
+	u32 rmon_t_p256to511;		/* FEC + 0x234 */
+	u32 rmon_t_p512to1023;		/* FEC + 0x238 */
+	u32 rmon_t_p1024to2047;		/* FEC + 0x23C */
+	u32 rmon_t_p_gte2048;		/* FEC + 0x240 */
+	u32 rmon_t_octets;		/* FEC + 0x244 */
+	u32 ieee_t_drop;		/* FEC + 0x248 */
+	u32 ieee_t_frame_ok;		/* FEC + 0x24C */
+	u32 ieee_t_1col;		/* FEC + 0x250 */
+	u32 ieee_t_mcol;		/* FEC + 0x254 */
+	u32 ieee_t_def;			/* FEC + 0x258 */
+	u32 ieee_t_lcol;		/* FEC + 0x25C */
+	u32 ieee_t_excol;		/* FEC + 0x260 */
+	u32 ieee_t_macerr;		/* FEC + 0x264 */
+	u32 ieee_t_cserr;		/* FEC + 0x268 */
+	u32 ieee_t_sqe;			/* FEC + 0x26C */
+	u32 t_fdxfc;			/* FEC + 0x270 */
+	u32 ieee_t_octets_ok;		/* FEC + 0x274 */
+
+	u32 reserved9[2];		/* FEC + 0x278-27C */
+	u32 rmon_r_drop;		/* FEC + 0x280 */
+	u32 rmon_r_packets;		/* FEC + 0x284 */
+	u32 rmon_r_bc_pkt;		/* FEC + 0x288 */
+	u32 rmon_r_mc_pkt;		/* FEC + 0x28C */
+	u32 rmon_r_crc_align;		/* FEC + 0x290 */
+	u32 rmon_r_undersize;		/* FEC + 0x294 */
+	u32 rmon_r_oversize;		/* FEC + 0x298 */
+	u32 rmon_r_frag;		/* FEC + 0x29C */
+	u32 rmon_r_jab;			/* FEC + 0x2A0 */
+
+	u32 rmon_r_resvd_0;		/* FEC + 0x2A4 */
+
+	u32 rmon_r_p64;			/* FEC + 0x2A8 */
+	u32 rmon_r_p65to127;		/* FEC + 0x2AC */
+	u32 rmon_r_p128to255;		/* FEC + 0x2B0 */
+	u32 rmon_r_p256to511;		/* FEC + 0x2B4 */
+	u32 rmon_r_p512to1023;		/* FEC + 0x2B8 */
+	u32 rmon_r_p1024to2047;		/* FEC + 0x2BC */
+	u32 rmon_r_p_gte2048;		/* FEC + 0x2C0 */
+	u32 rmon_r_octets;		/* FEC + 0x2C4 */
+	u32 ieee_r_drop;		/* FEC + 0x2C8 */
+	u32 ieee_r_frame_ok;		/* FEC + 0x2CC */
+	u32 ieee_r_crc;			/* FEC + 0x2D0 */
+	u32 ieee_r_align;		/* FEC + 0x2D4 */
+	u32 r_macerr;			/* FEC + 0x2D8 */
+	u32 r_fdxfc;			/* FEC + 0x2DC */
+	u32 ieee_r_octets_ok;		/* FEC + 0x2E0 */
+
+	u32 reserved10[7];		/* FEC + 0x2E4-2FC */
+
+	u32 reserved11[64];		/* FEC + 0x300-3FF */
+};
+
+#define	FEC_MIB_DISABLE			0x80000000
+
+#define	FEC_IEVENT_HBERR		0x80000000
+#define	FEC_IEVENT_BABR			0x40000000
+#define	FEC_IEVENT_BABT			0x20000000
+#define	FEC_IEVENT_GRA			0x10000000
+#define	FEC_IEVENT_TFINT		0x08000000
+#define	FEC_IEVENT_MII			0x00800000
+#define	FEC_IEVENT_LATE_COL		0x00200000
+#define	FEC_IEVENT_COL_RETRY_LIM	0x00100000
+#define	FEC_IEVENT_XFIFO_UN		0x00080000
+#define	FEC_IEVENT_XFIFO_ERROR		0x00040000
+#define	FEC_IEVENT_RFIFO_ERROR		0x00020000
+
+#define	FEC_IMASK_HBERR			0x80000000
+#define	FEC_IMASK_BABR			0x40000000
+#define	FEC_IMASK_BABT			0x20000000
+#define	FEC_IMASK_GRA			0x10000000
+#define	FEC_IMASK_MII			0x00800000
+#define	FEC_IMASK_LATE_COL		0x00200000
+#define	FEC_IMASK_COL_RETRY_LIM		0x00100000
+#define	FEC_IMASK_XFIFO_UN		0x00080000
+#define	FEC_IMASK_XFIFO_ERROR		0x00040000
+#define	FEC_IMASK_RFIFO_ERROR		0x00020000
+
+#define	FEC_RCNTRL_MAX_FL_SHIFT		16
+#define	FEC_RCNTRL_LOOP			0x01
+#define	FEC_RCNTRL_DRT			0x02
+#define	FEC_RCNTRL_MII_MODE		0x04
+#define	FEC_RCNTRL_PROM			0x08
+#define	FEC_RCNTRL_BC_REJ		0x10
+#define	FEC_RCNTRL_FCE			0x20
+
+#define	FEC_TCNTRL_GTS			0x00000001
+#define	FEC_TCNTRL_HBC			0x00000002
+#define	FEC_TCNTRL_FDEN			0x00000004
+#define	FEC_TCNTRL_TFC_PAUSE		0x00000008
+#define	FEC_TCNTRL_RFC_PAUSE		0x00000010
+
+#define	FEC_ECNTRL_RESET		0x00000001
+#define	FEC_ECNTRL_ETHER_EN		0x00000002
+
+#define FEC_PADDR2_TYPE			0x8808
+
+#define FEC_OP_PAUSE_OPCODE		0x00010000
+
+#define FEC_FIFO_WMRK_256B		0x3
+
+#define FEC_FIFO_STATUS_ERR		0x00400000
+#define FEC_FIFO_STATUS_UF		0x00200000
+#define FEC_FIFO_STATUS_OF		0x00100000
+
+#define FEC_FIFO_CNTRL_FRAME		0x08000000
+#define FEC_FIFO_CNTRL_LTG_7		0x07000000
+
+#define FEC_RESET_CNTRL_RESET_FIFO	0x02000000
+#define FEC_RESET_CNTRL_ENABLE_IS_RESET	0x01000000
+
+#define FEC_XMIT_FSM_APPEND_CRC		0x02000000
+#define FEC_XMIT_FSM_ENABLE_CRC		0x01000000
+
+
+int __init fec_mdio_init(void);
+void __exit fec_mdio_exit(void);
+
+#endif	/* __DRIVERS_NET_MPC52XX_FEC_H__ */
diff -pruN dummy/fec_phy.c ./drivers/net/fec_mpc52xx/fec_phy.c
--- dummy/fec_phy.c	1970-01-01 01:00:00.000000000 +0100
+++ ./drivers/net/fec_mpc52xx/fec_phy.c	2007-08-10 10:59:53.000000000 +0200
@@ -0,0 +1,229 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/phy.h>
+#include <asm/io.h>
+#include <asm/mpc52xx.h>
+#include <asm/of_platform.h>
+#include "fec_phy.h"
+#include "fec.h"
+
+struct fec_mdio_priv {
+	int completed;
+	wait_queue_head_t wq;
+	struct mpc52xx_fec __iomem *regs;
+	int irq;
+};
+
+static int fec_mdio_read(struct mii_bus *bus, int phy_id, int reg)
+{
+	struct fec_mdio_priv *priv = bus->priv;
+	int tries = 100;
+
+	u32 request = FEC_MII_READ_FRAME;
+	request |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
+	request |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
+
+	out_be32(&priv->regs->mii_data, request);
+
+	/* wait for it to finish, this takes about 23 us on lite5200b */
+	while (priv->completed == 0 && tries--)
+		udelay(5);
+
+	priv->completed = 0;
+
+	if (tries == 0)
+		return -ETIMEDOUT;
+
+	return in_be32(&priv->regs->mii_data) & FEC_MII_DATA_DATAMSK;
+}
+
+static int fec_mdio_write(struct mii_bus *bus, int phy_id, int reg, u16 data)
+{
+	struct fec_mdio_priv *priv = bus->priv;
+	u32 value = data;
+	int tries = 100;
+
+	value |= FEC_MII_WRITE_FRAME;
+	value |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
+	value |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
+
+	out_be32(&priv->regs->mii_data, value);
+
+	/* wait for request to finish */
+	while (priv->completed == 0 && tries--)
+		udelay(5);
+
+	priv->completed = 0;
+
+	if (tries == 0)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+static irqreturn_t fec_mdio_interrupt(int irq, void *dev_id)
+{
+	struct fec_mdio_priv *priv = dev_id;
+	struct mpc52xx_fec __iomem *fec;
+	int ievent;
+
+	fec = priv->regs;
+	ievent = in_be32(&fec->ievent);
+
+	ievent &= FEC_IEVENT_MII;
+	if (!ievent)
+		return IRQ_NONE;
+
+	out_be32(&fec->ievent, ievent);
+
+	priv->completed = 1;
+	wake_up(&priv->wq);
+
+	return IRQ_HANDLED;
+}
+
+static int fec_mdio_probe(struct of_device *of, const struct of_device_id *match)
+{
+	struct device *dev = &of->dev;
+	struct device_node *np = of->node;
+	struct device_node *child = NULL;
+	struct mii_bus *bus;
+	struct fec_mdio_priv *priv;
+	struct resource res = {};
+	int err;
+	int i;
+
+	bus = kzalloc(sizeof(*bus), GFP_KERNEL);
+	if (bus == NULL)
+		return -ENOMEM;
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+	if (priv == NULL) {
+		err = -ENOMEM;
+		goto out_free;
+	}
+
+	bus->name = "mpc52xx MII bus";
+	bus->read = fec_mdio_read;
+	bus->write = fec_mdio_write;
+
+	/* setup irqs */
+	bus->irq = kcalloc(sizeof(bus->irq[0]), PHY_MAX_ADDR, GFP_KERNEL);
+	if (bus->irq == NULL) {
+		err = -ENOMEM;
+		goto out_free;
+	}
+	for (i=0; i<PHY_MAX_ADDR; i++)
+		bus->irq[i] = PHY_POLL;
+
+	while ((child = of_get_next_child(np, child)) != NULL) {
+		int irq = irq_of_parse_and_map(child, 0);
+		if (irq != NO_IRQ) {
+			const u32 *id = of_get_property(child, "reg", NULL);
+			bus->irq[*id] = irq;
+		}
+	}
+
+	/* setup registers */
+	err = of_address_to_resource(np, 0, &res);
+	if (err)
+		goto out_free;
+	priv->regs = ioremap(res.start, res.end - res.start + 1);
+	if (priv->regs == NULL) {
+		err = -ENOMEM;
+		goto out_free;
+	}
+
+	priv->irq = irq_of_parse_and_map(np, 0);
+	err = request_irq(priv->irq, &fec_mdio_interrupt, IRQF_DISABLED | IRQF_SHARED,
+	                "fec_mdio", priv);
+	if (err) {
+		printk(KERN_ERR "%s: interrupt request failed with %i\n", __func__, err);
+		goto out_unmap;
+	}
+
+	bus->id = res.start;
+	bus->priv = priv;
+
+	bus->dev = dev;
+	dev_set_drvdata(dev, bus);
+
+	init_waitqueue_head(&priv->wq);
+
+	/* set MII speed */
+	out_be32(&priv->regs->mii_speed, ((mpc52xx_find_ipb_freq(of->node) >> 20) / 5) << 1);
+
+	/* enable MII interrupt */
+	out_be32(&priv->regs->imask, in_be32(&priv->regs->imask) | FEC_IMASK_MII);
+
+	err = mdiobus_register(bus);
+	if (err)
+		goto out_free_irq;
+
+	return 0;
+
+ out_free_irq:
+	free_irq(priv->irq, dev);
+	irq_dispose_mapping(priv->irq);
+ out_unmap:
+	iounmap(priv->regs);
+ out_free:
+	for (i=0; i<PHY_MAX_ADDR; i++)
+		if (bus->irq[i])
+			irq_dispose_mapping(bus->irq[i]);
+	kfree(bus->irq);
+	kfree(priv);
+	kfree(bus);
+
+	return err;
+}
+
+static int fec_mdio_remove(struct of_device *of)
+{
+	struct device *dev = &of->dev;
+	struct mii_bus *bus = dev_get_drvdata(dev);
+	struct fec_mdio_priv *priv = bus->priv;
+	int i;
+
+	mdiobus_unregister(bus);
+	dev_set_drvdata(dev, NULL);
+
+	free_irq(priv->irq, dev);
+	irq_dispose_mapping(priv->irq);
+	iounmap(priv->regs);
+	for (i=0; i<PHY_MAX_ADDR; i++)
+		if (bus->irq[i])
+			irq_dispose_mapping(bus->irq[i]);
+	kfree(priv);
+	kfree(bus->irq);
+	kfree(bus);
+
+	return 0;
+}
+
+
+static struct of_device_id fec_mdio_match[] = {
+	{
+		.type = "mdio",
+		.compatible = "mpc5200b-fec-phy",
+	},
+	{},
+};
+
+static struct of_platform_driver fec_mdio_driver = {
+	.name = "mpc5200b-fec-phy",
+	.probe = fec_mdio_probe,
+	.remove = fec_mdio_remove,
+	.match_table = fec_mdio_match,
+};
+
+
+int __init fec_mdio_init(void)
+{
+	return of_register_platform_driver(&fec_mdio_driver);
+}
+
+void __exit fec_mdio_exit(void)
+{
+	of_unregister_platform_driver(&fec_mdio_driver);
+}
diff -pruN dummy/fec_phy.h ./drivers/net/fec_mpc52xx/fec_phy.h
--- dummy/fec_phy.h	1970-01-01 01:00:00.000000000 +0100
+++ ./drivers/net/fec_mpc52xx/fec_phy.h	2007-08-10 11:22:54.000000000 +0200
@@ -0,0 +1,49 @@
+/*
+ * arch/ppc/52xx_io/fec_phy.h
+ *
+ * Driver for the MPC5200 Fast Ethernet Controller
+ * Based heavily on the MII support for the MPC8xx by Dan Malek
+ *
+ * Author: Dale Farnsworth <dfarnsworth@mvista.com>
+ *
+ * 2003-2004 (c) MontaVista, Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#define FEC_IMASK_ALL		(FEC_IMASK_HBERR | FEC_IMASK_BABR | \
+		FEC_IMASK_BABT | FEC_IMASK_GRA | FEC_IMASK_MII | \
+		FEC_IMASK_LATE_COL | FEC_IMASK_COL_RETRY_LIM | \
+		FEC_IMASK_XFIFO_UN | FEC_IMASK_XFIFO_ERROR | \
+		FEC_IMASK_RFIFO_ERROR)
+
+#ifdef CONFIG_FEC_MPC52xx_MDIO
+#define MII_RCNTL_MODE		FEC_RCNTRL_MII_MODE
+#define FEC_IMASK_ENABLE	FEC_IMASK_ALL
+#define set_phy_speed(fec, s)	out_be32(&fec->mii_speed, s)
+#else
+#define MII_RCNTL_MODE		0
+#define FEC_IMASK_ENABLE	(FEC_IMASK_ALL & ~FEC_IMASK_MII)
+#define set_phy_speed(fec, s)	do { } while (0)
+#define fec_mii_start(dev)	do { } while (0)
+#define fec_mii(dev)	printk(KERN_WARNING "unexpected FEC_IEVENT_MII\n")
+#define fec_mii_init(dev)	do { } while (0)
+#define fec_mii_suspend(dev)	do { } while (0)
+#define fec_mii_resume(dev)	do { } while (0)
+#endif	/* CONFIG_FEC_MPC52xx_MDIO */
+
+/* MII-related definitions */
+#define FEC_MII_DATA_ST		0x40000000	/* Start frame */
+#define FEC_MII_DATA_OP_RD	0x20000000	/* Perform read */
+#define FEC_MII_DATA_OP_WR	0x10000000	/* Perform write */
+#define FEC_MII_DATA_PA_MSK	0x0f800000	/* PHY Address mask */
+#define FEC_MII_DATA_RA_MSK	0x007c0000	/* PHY Register mask */
+#define FEC_MII_DATA_TA		0x00020000	/* Turnaround */
+#define FEC_MII_DATA_DATAMSK	0x0000ffff	/* PHY data mask */
+
+#define FEC_MII_READ_FRAME	(FEC_MII_DATA_ST | FEC_MII_DATA_OP_RD | FEC_MII_DATA_TA)
+#define FEC_MII_WRITE_FRAME	(FEC_MII_DATA_ST | FEC_MII_DATA_OP_WR | FEC_MII_DATA_TA)
+
+#define FEC_MII_DATA_RA_SHIFT	0x12		/* MII reg addr bits */
+#define FEC_MII_DATA_PA_SHIFT	0x17		/* MII PHY addr bits */
diff -pruN dummy/Kconfig ./drivers/net/fec_mpc52xx/Kconfig
--- dummy/Kconfig	1970-01-01 01:00:00.000000000 +0100
+++ ./drivers/net/fec_mpc52xx/Kconfig	2007-08-08 10:50:04.000000000 +0200
@@ -0,0 +1,24 @@
+menu "MPC5200 Networking Options"
+	depends PPC_MPC52xx && NET_ETHERNET
+
+config FEC_MPC52xx
+	tristate "FEC Ethernet"
+	depends on NET_ETHERNET
+	select PPC_BESTCOMM
+	select PPC_BESTCOMM_FEC
+	select CRC32
+	---help---
+	  This option enables support for the MPC5200's on-chip
+	  Fast Ethernet Controller
+
+config USE_MDIO
+	bool "Use external Ethernet MII PHY"
+	select MII
+	depends FEC_MPC52xx
+	---help---
+	  The MPC5200's FEC can connect to the Ethernet either with
+	  an external MII PHY chip or 10 Mbps 7-wire interface 
+	  (Motorola? industry standard).
+	  If your board uses an external PHY, say y, else n.
+
+endmenu
diff -pruN dummy/Makefile ./drivers/net/fec_mpc52xx/Makefile
--- dummy/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ ./drivers/net/fec_mpc52xx/Makefile	2007-08-08 10:50:04.000000000 +0200
@@ -0,0 +1,7 @@
+obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx.o
+
+fec_mpc52xx-objs := fec.o
+
+ifeq ($(CONFIG_FEC_MPC52xx_MDIO),y)
+fec_mpc52xx-objs += fec_phy.o
+endif
Index: work-powerpc.git/arch/powerpc/boot/dts/lite5200b.dts
===================================================================
--- work-powerpc.git.orig/arch/powerpc/boot/dts/lite5200b.dts
+++ work-powerpc.git/arch/powerpc/boot/dts/lite5200b.dts
@@ -365,10 +365,26 @@
 		ethernet@3000 {
 			device_type = "network";
 			compatible = "mpc5200b-fec\0mpc5200-fec";
-			reg = <3000 800>;
+			reg = <3000 400>;
 			mac-address = [ 02 03 04 05 06 07 ]; // Bad!
 			interrupts = <2 5 0>;
 			interrupt-parent = <&mpc5200_pic>;
+			phy-handle = <&phy0>;
+		};
+
+		mdio@3000 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			device_type = "mdio";
+			compatible = "mpc5200b-fec-phy";
+			reg = <3000 400>;	// fec range, since we need to setup fec interrupts
+			interrupts = <2 5 0>;	// these are for "mii command finished", not link changes & co.
+			interrupt-parent = <&mpc5200_pic>;
+
+			phy0:ethernet-phy@0 {
+				device_type = "ethernet-phy";
+				reg = <0>;
+			};
 		};
 
 		ata@3a00 {
Index: work-powerpc.git/arch/powerpc/sysdev/bestcomm/fec.h
===================================================================
--- work-powerpc.git.orig/arch/powerpc/sysdev/bestcomm/fec.h
+++ work-powerpc.git/arch/powerpc/sysdev/bestcomm/fec.h
@@ -22,6 +22,20 @@ struct bcom_fec_bd {
 
 #define BCOM_FEC_TX_BD_TFD	0x08000000ul	/* transmit frame done */
 #define BCOM_FEC_TX_BD_INT	0x04000000ul	/* interrupt */
+#define BCOM_FEC_TX_BD_TC	0x04000000ul	/* transmit CRC XXX same as ^? */
+#define BCOM_FEC_TX_BD_ABC	0x02000000ul	/* append bad CRC */
+
+#define BCOM_FEC_RX_BD_L	0x08000000ul	/* buffer is last in frame */
+#define BCOM_FEC_RX_BD_BC	0x00800000ul	/* DA is broadcast */
+#define BCOM_FEC_RX_BD_MC	0x00400000ul	/* DA is multicast and not broadcast */
+#define BCOM_FEC_RX_BD_LG	0x00200000ul	/* Rx frame length violation */
+#define BCOM_FEC_RX_BD_NO	0x00100000ul	/* Rx non-octet aligned frame */
+#define BCOM_FEC_RX_BD_CR	0x00040000ul	/* Rx CRC error */
+#define BCOM_FEC_RX_BD_OV	0x00020000ul	/* overrun */
+#define BCOM_FEC_RX_BD_TR	0x00010000ul	/* Rx frame truncated */
+#define BCOM_FEC_RX_BD_LEN_MASK	0x000007fful	/* mask for length of received frame */
+#define BCOM_FEC_RX_BD_ERRORS	(BCOM_FEC_RX_BD_LG | BCOM_FEC_RX_BD_NO | \
+		BCOM_FEC_RX_BD_CR | BCOM_FEC_RX_BD_OV | BCOM_FEC_RX_BD_TR)
 
 
 extern struct bcom_task *

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