[PATCH v4] FEC - fast ethernet controller for mpc52xx

Grant Likely grant.likely at secretlab.ca
Mon Oct 22 04:32:33 EST 2007


On 10/19/07, Domen Puncer <domen.puncer at telargo.com> wrote:
> Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
>
>
> Signed-off-by: Domen Puncer <domen.puncer at telargo.com>

I've tested this on my lite5200.  It works well.

Jeff, I've got no objections to this going in.  All the needed
platform support has already been merged.

Cheers,
g.

>
> ---
> On 18/10/07 15:14 -0400, Jeff Garzik wrote:
> >
> > except a resend combining patches 3 and 4 as requested :)
>
> OK, here it goes. Sorry for the delay.
>
>
> diffstat:
>  drivers/net/Kconfig           |   24
>  drivers/net/Makefile          |    4
>  drivers/net/fec_mpc52xx.c     | 1107 ++++++++++++++++++++++++++++++++++++++++++
>  drivers/net/fec_mpc52xx.h     |  315 +++++++++++
>  drivers/net/fec_mpc52xx_phy.c |  198 +++++++
>  5 files changed, 1648 insertions(+)
>
> Index: linux.git/drivers/net/Kconfig
> ===================================================================
> --- linux.git.orig/drivers/net/Kconfig
> +++ linux.git/drivers/net/Kconfig
> @@ -1895,6 +1895,30 @@ config FEC2
>           Say Y here if you want to use the second built-in 10/100 Fast
>           ethernet controller on some Motorola ColdFire processors.
>
> +config FEC_MPC52xx
> +       tristate "MPC52xx FEC driver"
> +       depends on PPC_MPC52xx
> +       select PPC_BESTCOMM
> +       select PPC_BESTCOMM_FEC
> +       select CRC32
> +       select PHYLIB
> +       ---help---
> +         This option enables support for the MPC5200's on-chip
> +         Fast Ethernet Controller
> +         If compiled as module, it will be called 'fec_mpc52xx.ko'.
> +
> +config FEC_MPC52xx_MDIO
> +       bool "MPC52xx FEC MDIO bus driver"
> +       depends on FEC_MPC52xx
> +       default y
> +       ---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 connected to FEC, enable this.
> +         If not sure, enable.
> +         If compiled as module, it will be called 'fec_mpc52xx_phy.ko'.
> +
>  config NE_H8300
>         tristate "NE2000 compatible support for H8/300"
>         depends on H8300
> Index: linux.git/drivers/net/Makefile
> ===================================================================
> --- linux.git.orig/drivers/net/Makefile
> +++ linux.git/drivers/net/Makefile
> @@ -96,6 +96,10 @@ obj-$(CONFIG_SHAPER) += shaper.o
>  obj-$(CONFIG_HP100) += hp100.o
>  obj-$(CONFIG_SMC9194) += smc9194.o
>  obj-$(CONFIG_FEC) += fec.o
> +obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx.o
> +ifeq ($(CONFIG_FEC_MPC52xx_MDIO),y)
> +       obj-$(CONFIG_FEC_MPC52xx) += fec_mpc52xx_phy.o
> +endif
>  obj-$(CONFIG_68360_ENET) += 68360enet.o
>  obj-$(CONFIG_WD80x3) += wd.o 8390.o
>  obj-$(CONFIG_EL2) += 3c503.o 8390.o
> Index: linux.git/drivers/net/fec_mpc52xx.c
> ===================================================================
> --- /dev/null
> +++ linux.git/drivers/net/fec_mpc52xx.c
> @@ -0,0 +1,1107 @@
> +/*
> + * Driver for the MPC5200 Fast Ethernet Controller
> + *
> + * Originally written by Dale Farnsworth <dfarnsworth at mvista.com> and
> + * now maintained by Sylvain Munaut <tnt at 246tNt.com>
> + *
> + * Copyright (C) 2007  Domen Puncer, Telargo, Inc.
> + * Copyright (C) 2007  Sylvain Munaut <tnt at 246tNt.com>
> + * Copyright (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/delay.h>
> +#include <linux/of_device.h>
> +#include <linux/of_platform.h>
> +
> +#include <linux/netdevice.h>
> +#include <linux/etherdevice.h>
> +#include <linux/ethtool.h>
> +#include <linux/skbuff.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_mpc52xx.h"
> +
> +#define DRIVER_NAME "mpc52xx-fec"
> +
> +static irqreturn_t mpc52xx_fec_interrupt(int, void *);
> +static irqreturn_t mpc52xx_fec_rx_interrupt(int, void *);
> +static irqreturn_t mpc52xx_fec_tx_interrupt(int, void *);
> +static void mpc52xx_fec_stop(struct net_device *dev);
> +static void mpc52xx_fec_start(struct net_device *dev);
> +static void mpc52xx_fec_reset(struct net_device *dev);
> +
> +static u8 mpc52xx_fec_mac_addr[6];
> +module_param_array_named(mac, mpc52xx_fec_mac_addr, byte, NULL, 0);
> +MODULE_PARM_DESC(mac, "six hex digits, ie. 0x1,0x2,0xc0,0x01,0xba,0xbe");
> +
> +static void mpc52xx_fec_tx_timeout(struct net_device *dev)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +
> +       dev_warn(&dev->dev, "transmit timed out\n");
> +
> +       mpc52xx_fec_reset(dev);
> +
> +       priv->stats.tx_errors++;
> +
> +       if (!priv->tx_full)
> +               netif_wake_queue(dev);
> +}
> +
> +static void mpc52xx_fec_set_paddr(struct net_device *dev, u8 *mac)
> +{
> +       struct mpc52xx_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 mpc52xx_fec_get_paddr(struct net_device *dev, u8 *mac)
> +{
> +       struct mpc52xx_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 mpc52xx_fec_set_mac_address(struct net_device *dev, void *addr)
> +{
> +       struct sockaddr *sock = addr;
> +
> +       memcpy(dev->dev_addr, sock->sa_data, dev->addr_len);
> +
> +       mpc52xx_fec_set_paddr(dev, sock->sa_data);
> +       return 0;
> +}
> +
> +static void mpc52xx_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 mpc52xx_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 == NULL)
> +                       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 from fs_enet-main.c */
> +static void mpc52xx_fec_adjust_link(struct net_device *dev)
> +{
> +       struct mpc52xx_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) {
> +                       struct mpc52xx_fec __iomem *fec = priv->fec;
> +                       u32 rcntrl;
> +                       u32 tcntrl;
> +
> +                       new_state = 1;
> +                       priv->duplex = phydev->duplex;
> +
> +                       rcntrl = in_be32(&fec->r_cntrl);
> +                       tcntrl = in_be32(&fec->x_cntrl);
> +
> +                       rcntrl &= ~FEC_RCNTRL_DRT;
> +                       tcntrl &= ~FEC_TCNTRL_FDEN;
> +                       if (phydev->duplex == DUPLEX_FULL)
> +                               tcntrl |= FEC_TCNTRL_FDEN;      /* FD enable */
> +                       else
> +                               rcntrl |= FEC_RCNTRL_DRT;       /* disable Rx on Tx (HD) */
> +
> +                       out_be32(&fec->r_cntrl, rcntrl);
> +                       out_be32(&fec->x_cntrl, tcntrl);
> +               }
> +
> +               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 mpc52xx_fec_init_phy(struct net_device *dev)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +       struct phy_device *phydev;
> +       char phy_id[BUS_ID_SIZE];
> +
> +       snprintf(phy_id, BUS_ID_SIZE, PHY_ID_FMT,
> +                       (unsigned int)dev->base_addr, priv->phy_addr);
> +
> +       priv->link = PHY_DOWN;
> +       priv->speed = 0;
> +       priv->duplex = -1;
> +
> +       phydev = phy_connect(dev, phy_id, &mpc52xx_fec_adjust_link, 0, PHY_INTERFACE_MODE_MII);
> +       if (IS_ERR(phydev)) {
> +               dev_err(&dev->dev, "phy_connect failed\n");
> +               return PTR_ERR(phydev);
> +       }
> +       dev_info(&dev->dev, "attached phy %i to driver %s\n",
> +                       phydev->addr, phydev->drv->name);
> +
> +       priv->phydev = phydev;
> +
> +       return 0;
> +}
> +
> +static int mpc52xx_fec_phy_start(struct net_device *dev)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +       int err;
> +
> +       if (!priv->has_phy)
> +               return 0;
> +
> +       err = mpc52xx_fec_init_phy(dev);
> +       if (err) {
> +               dev_err(&dev->dev, "mpc52xx_fec_init_phy failed\n");
> +               return err;
> +       }
> +
> +       /* reset phy - this also wakes it from PDOWN */
> +       phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
> +       phy_start(priv->phydev);
> +
> +       return 0;
> +}
> +
> +static void mpc52xx_fec_phy_stop(struct net_device *dev)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +
> +       if (!priv->has_phy)
> +               return;
> +
> +       phy_disconnect(priv->phydev);
> +       /* power down phy */
> +       phy_stop(priv->phydev);
> +       phy_write(priv->phydev, MII_BMCR, BMCR_PDOWN);
> +}
> +
> +static int mpc52xx_fec_phy_mii_ioctl(struct mpc52xx_fec_priv *priv,
> +               struct mii_ioctl_data *mii_data, int cmd)
> +{
> +       if (!priv->has_phy)
> +               return -ENOTSUPP;
> +
> +       return phy_mii_ioctl(priv->phydev, mii_data, cmd);
> +}
> +
> +static void mpc52xx_fec_phy_hw_init(struct mpc52xx_fec_priv *priv)
> +{
> +       struct mpc52xx_fec __iomem *fec = priv->fec;
> +
> +       if (!priv->has_phy)
> +               return;
> +
> +       out_be32(&fec->mii_speed, priv->phy_speed);
> +}
> +
> +static int mpc52xx_fec_open(struct net_device *dev)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +       int err = -EBUSY;
> +
> +       if (request_irq(dev->irq, &mpc52xx_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, &mpc52xx_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, &mpc52xx_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 = mpc52xx_fec_alloc_rx_buffers(priv->rx_dmatsk);
> +       if (err) {
> +               dev_err(&dev->dev, "mpc52xx_fec_alloc_rx_buffers failed\n");
> +               goto free_irqs;
> +       }
> +
> +       err = mpc52xx_fec_phy_start(dev);
> +       if (err)
> +               goto free_skbs;
> +
> +       bcom_enable(priv->rx_dmatsk);
> +       bcom_enable(priv->tx_dmatsk);
> +
> +       mpc52xx_fec_start(dev);
> +
> +       netif_start_queue(dev);
> +
> +       return 0;
> +
> + free_skbs:
> +       mpc52xx_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 mpc52xx_fec_close(struct net_device *dev)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +
> +       netif_stop_queue(dev);
> +
> +       mpc52xx_fec_stop(dev);
> +
> +       mpc52xx_fec_free_rx_buffers(priv->rx_dmatsk);
> +
> +       free_irq(dev->irq, dev);
> +       free_irq(priv->r_irq, dev);
> +       free_irq(priv->t_irq, dev);
> +
> +       mpc52xx_fec_phy_stop(dev);
> +
> +       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 mpc52xx_fec_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
> +{
> +       struct mpc52xx_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_TC;
> +       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 mpc52xx_fec_tx_interrupt(int irq, void *dev_id)
> +{
> +       struct net_device *dev = dev_id;
> +       struct mpc52xx_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 mpc52xx_fec_rx_interrupt(int irq, void *dev_id)
> +{
> +       struct net_device *dev = dev_id;
> +       struct mpc52xx_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 mpc52xx_fec_interrupt(int irq, void *dev_id)
> +{
> +       struct net_device *dev = dev_id;
> +       struct mpc52xx_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");
> +
> +       mpc52xx_fec_reset(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 *mpc52xx_fec_get_stats(struct net_device *dev)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +       struct net_device_stats *stats = &priv->stats;
> +       struct mpc52xx_fec __iomem *fec = priv->fec;
> +
> +       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 mpc52xx_fec_reset_stats(struct net_device *dev)
> +{
> +       struct mpc52xx_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, (__force u32)&fec->reserved10 -
> +                       (__force 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 mpc52xx_fec_set_multicast_list(struct net_device *dev)
> +{
> +       struct mpc52xx_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);
> +               }
> +       }
> +}
> +
> +/**
> + * mpc52xx_fec_hw_init
> + * @dev: network device
> + *
> + * Setup various hardware setting, only needed once on start
> + */
> +static void mpc52xx_fec_hw_init(struct net_device *dev)
> +{
> +       struct mpc52xx_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.
> +        * this can't be done in phy driver, since it needs to be called
> +        * before fec stuff (even on resume) */
> +       mpc52xx_fec_phy_hw_init(priv);
> +}
> +
> +/**
> + * mpc52xx_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 mpc52xx_fec_start(struct net_device *dev)
> +{
> +       struct mpc52xx_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 mpc52xx_fec_enable */
> +       out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_ENABLE_IS_RESET);
> +
> +       /* Set station address. */
> +       mpc52xx_fec_set_paddr(dev, dev->dev_addr);
> +
> +       mpc52xx_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;
> +
> +       if (priv->has_phy)
> +               rcntrl |= FEC_RCNTRL_MII_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;
> +}
> +
> +/**
> + * mpc52xx_fec_stop
> + * @dev: network device
> + *
> + * stop all activity on fec and empty dma buffers
> + */
> +static void mpc52xx_fec_stop(struct net_device *dev)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +       struct mpc52xx_fec __iomem *fec = priv->fec;
> +       unsigned long timeout;
> +
> +       /* disable all interrupts */
> +       out_be32(&fec->imask, 0);
> +
> +       /* Disable the rx task. */
> +       bcom_disable(priv->rx_dmatsk);
> +
> +       /* Wait for tx queue to drain, but only if we're in process context */
> +       if (!in_interrupt()) {
> +               timeout = jiffies + msecs_to_jiffies(2000);
> +               while (time_before(jiffies, timeout) &&
> +                               !bcom_queue_empty(priv->tx_dmatsk))
> +                       msleep(100);
> +
> +               if (time_after_eq(jiffies, timeout))
> +                       dev_err(&dev->dev, "queues didn't drain\n");
> +#if 1
> +               if (time_after_eq(jiffies, timeout)) {
> +                       dev_err(&dev->dev, "  tx: index: %i, outdex: %i\n",
> +                                       priv->tx_dmatsk->index,
> +                                       priv->tx_dmatsk->outdex);
> +                       dev_err(&dev->dev, "  rx: index: %i, outdex: %i\n",
> +                                       priv->rx_dmatsk->index,
> +                                       priv->rx_dmatsk->outdex);
> +               }
> +#endif
> +       }
> +
> +       bcom_disable(priv->tx_dmatsk);
> +
> +       /* Stop FEC */
> +       out_be32(&fec->ecntrl, in_be32(&fec->ecntrl) & ~FEC_ECNTRL_ETHER_EN);
> +
> +       return;
> +}
> +
> +/* reset fec and bestcomm tasks */
> +static void mpc52xx_fec_reset(struct net_device *dev)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +       struct mpc52xx_fec __iomem *fec = priv->fec;
> +
> +       mpc52xx_fec_stop(dev);
> +
> +       out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status));
> +       out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_RESET_FIFO);
> +
> +       mpc52xx_fec_free_rx_buffers(priv->rx_dmatsk);
> +
> +       mpc52xx_fec_hw_init(dev);
> +
> +       phy_stop(priv->phydev);
> +       phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
> +       phy_start(priv->phydev);
> +
> +       bcom_fec_rx_reset(priv->rx_dmatsk);
> +       bcom_fec_tx_reset(priv->tx_dmatsk);
> +
> +       mpc52xx_fec_alloc_rx_buffers(priv->rx_dmatsk);
> +
> +       bcom_enable(priv->rx_dmatsk);
> +       bcom_enable(priv->tx_dmatsk);
> +
> +       mpc52xx_fec_start(dev);
> +}
> +
> +
> +/* ethtool interface */
> +static void mpc52xx_fec_get_drvinfo(struct net_device *dev,
> +               struct ethtool_drvinfo *info)
> +{
> +       strcpy(info->driver, DRIVER_NAME);
> +}
> +
> +static int mpc52xx_fec_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +       return phy_ethtool_gset(priv->phydev, cmd);
> +}
> +
> +static int mpc52xx_fec_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +       return phy_ethtool_sset(priv->phydev, cmd);
> +}
> +
> +static u32 mpc52xx_fec_get_msglevel(struct net_device *dev)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +       return priv->msg_enable;
> +}
> +
> +static void mpc52xx_fec_set_msglevel(struct net_device *dev, u32 level)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +       priv->msg_enable = level;
> +}
> +
> +static const struct ethtool_ops mpc52xx_fec_ethtool_ops = {
> +       .get_drvinfo = mpc52xx_fec_get_drvinfo,
> +       .get_settings = mpc52xx_fec_get_settings,
> +       .set_settings = mpc52xx_fec_set_settings,
> +       .get_link = ethtool_op_get_link,
> +       .get_msglevel = mpc52xx_fec_get_msglevel,
> +       .set_msglevel = mpc52xx_fec_set_msglevel,
> +};
> +
> +
> +static int mpc52xx_fec_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
> +{
> +       struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> +
> +       return mpc52xx_fec_phy_mii_ioctl(priv, if_mii(rq), 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 mpc52xx_fec_priv *priv = NULL;
> +       struct resource mem;
> +       const phandle *ph;
> +
> +       phys_addr_t rx_fifo;
> +       phys_addr_t tx_fifo;
> +
> +       /* Get the ether ndev & it's private zone */
> +       ndev = alloc_etherdev(sizeof(struct mpc52xx_fec_priv));
> +       if (!ndev)
> +               return -ENOMEM;
> +
> +       priv = netdev_priv(ndev);
> +
> +       /* 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              = mpc52xx_fec_open;
> +       ndev->stop              = mpc52xx_fec_close;
> +       ndev->hard_start_xmit   = mpc52xx_fec_hard_start_xmit;
> +       ndev->do_ioctl          = mpc52xx_fec_ioctl;
> +       ndev->ethtool_ops       = &mpc52xx_fec_ethtool_ops;
> +       ndev->get_stats         = mpc52xx_fec_get_stats;
> +       ndev->set_mac_address   = mpc52xx_fec_set_mac_address;
> +       ndev->set_multicast_list = mpc52xx_fec_set_multicast_list;
> +       ndev->tx_timeout        = mpc52xx_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 (!is_zero_ether_addr(mpc52xx_fec_mac_addr))
> +               memcpy(ndev->dev_addr, mpc52xx_fec_mac_addr, 6);
> +       else
> +               mpc52xx_fec_get_paddr(ndev, ndev->dev_addr);
> +
> +       priv->msg_enable = (NETIF_MSG_IFUP << 1) - 1;
> +       priv->duplex = DUPLEX_FULL;
> +
> +       /* is the phy present in device tree? */
> +       ph = of_get_property(op->node, "phy-handle", NULL);
> +       if (ph) {
> +               const unsigned int *prop;
> +               struct device_node *phy_dn;
> +               priv->has_phy = 1;
> +
> +               phy_dn = of_find_node_by_phandle(*ph);
> +               prop = of_get_property(phy_dn, "reg", NULL);
> +               priv->phy_addr = *prop;
> +
> +               of_node_put(phy_dn);
> +
> +               /* Phy speed */
> +               priv->phy_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1;
> +       } else {
> +               dev_info(&ndev->dev, "can't find \"phy-handle\" in device"
> +                               " tree, using 7-wire mode\n");
> +       }
> +
> +       /* Hardware init */
> +       mpc52xx_fec_hw_init(ndev);
> +
> +       mpc52xx_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 mpc52xx_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))
> +               mpc52xx_fec_close(dev);
> +
> +       return 0;
> +}
> +
> +static int mpc52xx_fec_of_resume(struct of_device *op)
> +{
> +       struct net_device *dev = dev_get_drvdata(&op->dev);
> +
> +       mpc52xx_fec_hw_init(dev);
> +       mpc52xx_fec_reset_stats(dev);
> +
> +       if (netif_running(dev))
> +               mpc52xx_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)
> +{
> +#ifdef CONFIG_FEC_MPC52xx_MDIO
> +       int ret;
> +       ret = of_register_platform_driver(&mpc52xx_fec_mdio_driver);
> +       if (ret) {
> +               printk(KERN_ERR DRIVER_NAME ": failed to register mdio driver\n");
> +               return ret;
> +       }
> +#endif
> +       return of_register_platform_driver(&mpc52xx_fec_driver);
> +}
> +
> +static void __exit
> +mpc52xx_fec_exit(void)
> +{
> +       of_unregister_platform_driver(&mpc52xx_fec_driver);
> +#ifdef CONFIG_FEC_MPC52xx_MDIO
> +       of_unregister_platform_driver(&mpc52xx_fec_mdio_driver);
> +#endif
> +}
> +
> +
> +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");
> Index: linux.git/drivers/net/fec_mpc52xx.h
> ===================================================================
> --- /dev/null
> +++ linux.git/drivers/net/fec_mpc52xx.h
> @@ -0,0 +1,315 @@
> +/*
> + * drivers/drivers/net/fec_mpc52xx/fec.h
> + *
> + * Driver for the MPC5200 Fast Ethernet Controller
> + *
> + * Author: Dale Farnsworth <dfarnsworth at 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/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          256
> +#define FEC_TX_NUM_BD          64
> +
> +#define FEC_RESET_DELAY                50      /* uS */
> +
> +#define FEC_WATCHDOG_TIMEOUT   ((400*HZ)/1000)
> +
> +struct mpc52xx_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;
> +
> +       int has_phy;
> +       unsigned int phy_speed;
> +       unsigned int phy_addr;
> +       struct phy_device *phydev;
> +       enum phy_state link;
> +       int speed;
> +};
> +
> +
> +/* ======================================================================== */
> +/* 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
> +
> +/* all but MII, which is enabled separately */
> +#define FEC_IMASK_ENABLE       (FEC_IMASK_HBERR | FEC_IMASK_BABR | \
> +               FEC_IMASK_BABT | FEC_IMASK_GRA | FEC_IMASK_LATE_COL | \
> +               FEC_IMASK_COL_RETRY_LIM | FEC_IMASK_XFIFO_UN | \
> +               FEC_IMASK_XFIFO_ERROR | FEC_IMASK_RFIFO_ERROR)
> +
> +#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_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 */
> +
> +#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
> +
> +
> +extern struct of_platform_driver mpc52xx_fec_mdio_driver;
> +
> +#endif /* __DRIVERS_NET_MPC52XX_FEC_H__ */
> Index: linux.git/drivers/net/fec_mpc52xx_phy.c
> ===================================================================
> --- /dev/null
> +++ linux.git/drivers/net/fec_mpc52xx_phy.c
> @@ -0,0 +1,198 @@
> +/*
> + * Driver for the MPC5200 Fast Ethernet Controller - MDIO bus driver
> + *
> + * Copyright (C) 2007  Domen Puncer, Telargo, 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/kernel.h>
> +#include <linux/module.h>
> +#include <linux/netdevice.h>
> +#include <linux/phy.h>
> +#include <linux/of_platform.h>
> +#include <asm/io.h>
> +#include <asm/mpc52xx.h>
> +#include "fec_mpc52xx.h"
> +
> +struct mpc52xx_fec_mdio_priv {
> +       struct mpc52xx_fec __iomem *regs;
> +};
> +
> +static int mpc52xx_fec_mdio_read(struct mii_bus *bus, int phy_id, int reg)
> +{
> +       struct mpc52xx_fec_mdio_priv *priv = bus->priv;
> +       struct mpc52xx_fec __iomem *fec;
> +       int tries = 100;
> +       u32 request = FEC_MII_READ_FRAME;
> +
> +       fec = priv->regs;
> +       out_be32(&fec->ievent, FEC_IEVENT_MII);
> +
> +       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 (!(in_be32(&fec->ievent) & FEC_IEVENT_MII) && --tries)
> +               udelay(5);
> +
> +       if (tries == 0)
> +               return -ETIMEDOUT;
> +
> +       return in_be32(&priv->regs->mii_data) & FEC_MII_DATA_DATAMSK;
> +}
> +
> +static int mpc52xx_fec_mdio_write(struct mii_bus *bus, int phy_id, int reg, u16 data)
> +{
> +       struct mpc52xx_fec_mdio_priv *priv = bus->priv;
> +       struct mpc52xx_fec __iomem *fec;
> +       u32 value = data;
> +       int tries = 100;
> +
> +       fec = priv->regs;
> +       out_be32(&fec->ievent, FEC_IEVENT_MII);
> +
> +       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 (!(in_be32(&fec->ievent) & FEC_IEVENT_MII) && --tries)
> +               udelay(5);
> +
> +       if (tries == 0)
> +               return -ETIMEDOUT;
> +
> +       return 0;
> +}
> +
> +static int mpc52xx_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 mpc52xx_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 = mpc52xx_fec_mdio_read;
> +       bus->write = mpc52xx_fec_mdio_write;
> +
> +       /* setup irqs */
> +       bus->irq = kmalloc(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;
> +       }
> +
> +       bus->id = res.start;
> +       bus->priv = priv;
> +
> +       bus->dev = dev;
> +       dev_set_drvdata(dev, bus);
> +
> +       /* 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_unmap;
> +
> +       return 0;
> +
> + out_unmap:
> +       iounmap(priv->regs);
> + out_free:
> +       for (i=0; i<PHY_MAX_ADDR; i++)
> +               if (bus->irq[i] != PHY_POLL)
> +                       irq_dispose_mapping(bus->irq[i]);
> +       kfree(bus->irq);
> +       kfree(priv);
> +       kfree(bus);
> +
> +       return err;
> +}
> +
> +static int mpc52xx_fec_mdio_remove(struct of_device *of)
> +{
> +       struct device *dev = &of->dev;
> +       struct mii_bus *bus = dev_get_drvdata(dev);
> +       struct mpc52xx_fec_mdio_priv *priv = bus->priv;
> +       int i;
> +
> +       mdiobus_unregister(bus);
> +       dev_set_drvdata(dev, NULL);
> +
> +       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 mpc52xx_fec_mdio_match[] = {
> +       {
> +               .type = "mdio",
> +               .compatible = "mpc5200b-fec-phy",
> +       },
> +       {},
> +};
> +
> +struct of_platform_driver mpc52xx_fec_mdio_driver = {
> +       .name = "mpc5200b-fec-phy",
> +       .probe = mpc52xx_fec_mdio_probe,
> +       .remove = mpc52xx_fec_mdio_remove,
> +       .match_table = mpc52xx_fec_mdio_match,
> +};
> +
> +/* let fec driver call it, since this has to be registered before it */
> +EXPORT_SYMBOL_GPL(mpc52xx_fec_mdio_driver);
> +
> +
> +MODULE_LICENSE("Dual BSD/GPL");
>


-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely at secretlab.ca
(403) 399-0195



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