* [PATCH v4] FEC - fast ethernet controller for mpc52xx
@ 2007-10-19 11:27 ` Domen Puncer
0 siblings, 0 replies; 48+ messages in thread
From: Domen Puncer @ 2007-10-19 11:27 UTC (permalink / raw)
To: Jeff Garzik; +Cc: Grant Likely, galak, linuxppc-dev, tnt, netdev
Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
---
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@mvista.com> and
+ * now maintained by Sylvain Munaut <tnt@246tNt.com>
+ *
+ * Copyright (C) 2007 Domen Puncer, Telargo, Inc.
+ * Copyright (C) 2007 Sylvain Munaut <tnt@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@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");
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
2007-10-19 11:27 ` Domen Puncer
@ 2007-10-21 18:32 ` Grant Likely
-1 siblings, 0 replies; 48+ messages in thread
From: Grant Likely @ 2007-10-21 18:32 UTC (permalink / raw)
To: Domen Puncer; +Cc: linuxppc-dev, Jeff Garzik, netdev
On 10/19/07, Domen Puncer <domen.puncer@telargo.com> wrote:
> Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
>
>
> Signed-off-by: Domen Puncer <domen.puncer@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@mvista.com> and
> + * now maintained by Sylvain Munaut <tnt@246tNt.com>
> + *
> + * Copyright (C) 2007 Domen Puncer, Telargo, Inc.
> + * Copyright (C) 2007 Sylvain Munaut <tnt@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@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@secretlab.ca
(403) 399-0195
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
@ 2007-10-21 18:32 ` Grant Likely
0 siblings, 0 replies; 48+ messages in thread
From: Grant Likely @ 2007-10-21 18:32 UTC (permalink / raw)
To: Domen Puncer; +Cc: Jeff Garzik, galak, linuxppc-dev, tnt, netdev
On 10/19/07, Domen Puncer <domen.puncer@telargo.com> wrote:
> Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
>
>
> Signed-off-by: Domen Puncer <domen.puncer@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@mvista.com> and
> + * now maintained by Sylvain Munaut <tnt@246tNt.com>
> + *
> + * Copyright (C) 2007 Domen Puncer, Telargo, Inc.
> + * Copyright (C) 2007 Sylvain Munaut <tnt@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@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@secretlab.ca
(403) 399-0195
^ permalink raw reply [flat|nested] 48+ messages in thread
* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
2007-10-19 11:27 ` Domen Puncer
@ 2007-10-25 9:29 ` Jeff Garzik
-1 siblings, 0 replies; 48+ messages in thread
From: Jeff Garzik @ 2007-10-25 9:29 UTC (permalink / raw)
To: Domen Puncer; +Cc: linuxppc-dev, netdev
Domen Puncer wrote:
> +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);
use your platform's dma mapping functions, rather than virt_to_phys()
it might be the exact same implementation, inside the platform
internals, but drivers should not be using this directly.
> +/* 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,
why IRQF_DISABLED? that should not be needed.
> + 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,
ditto
> + 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,
ditto
> + 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);
use dma_xxx
> + bcom_submit_next_buffer(priv->tx_dmatsk, skb);
> +
> + if (bcom_queue_full(priv->tx_dmatsk)) {
> + priv->tx_full = 1;
no need for your own tx_full variable
> + 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)
no need to test netif_queue_stopped(), netif_wake_queue() does that anyway
no need for 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);
generally wise to check for 0xffffffff, which often indicates hardware
fault / device not there / scrogged
> + 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));
don't use your own copy of net_device_stats, it's in net_device now
> +/*
> + * 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);
fall back to ALLMULTI behavior if dev->mc_count is too large (for your
chip's version of "too large")
> +/**
> + * 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);
version? anything else?
> +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;
delete this, no reason to ever touch IFF_RUNNING yourself
> + 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;
netif_msg_init
> + 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;
testing for impossible condition
> + 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@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");
> -
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
@ 2007-10-25 9:29 ` Jeff Garzik
0 siblings, 0 replies; 48+ messages in thread
From: Jeff Garzik @ 2007-10-25 9:29 UTC (permalink / raw)
To: Domen Puncer; +Cc: Grant Likely, galak, linuxppc-dev, tnt, netdev
Domen Puncer wrote:
> +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);
use your platform's dma mapping functions, rather than virt_to_phys()
it might be the exact same implementation, inside the platform
internals, but drivers should not be using this directly.
> +/* 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,
why IRQF_DISABLED? that should not be needed.
> + 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,
ditto
> + 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,
ditto
> + 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);
use dma_xxx
> + bcom_submit_next_buffer(priv->tx_dmatsk, skb);
> +
> + if (bcom_queue_full(priv->tx_dmatsk)) {
> + priv->tx_full = 1;
no need for your own tx_full variable
> + 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)
no need to test netif_queue_stopped(), netif_wake_queue() does that anyway
no need for 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);
generally wise to check for 0xffffffff, which often indicates hardware
fault / device not there / scrogged
> + 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));
don't use your own copy of net_device_stats, it's in net_device now
> +/*
> + * 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);
fall back to ALLMULTI behavior if dev->mc_count is too large (for your
chip's version of "too large")
> +/**
> + * 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);
version? anything else?
> +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;
delete this, no reason to ever touch IFF_RUNNING yourself
> + 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;
netif_msg_init
> + 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;
testing for impossible condition
> + 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@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");
> -
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
2007-10-25 9:29 ` Jeff Garzik
@ 2007-10-25 14:10 ` Domen Puncer
-1 siblings, 0 replies; 48+ messages in thread
From: Domen Puncer @ 2007-10-25 14:10 UTC (permalink / raw)
To: Jeff Garzik; +Cc: linuxppc-dev, netdev
On 25/10/07 05:29 -0400, Jeff Garzik wrote:
> Domen Puncer wrote:
> >+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);
>
> use your platform's dma mapping functions, rather than virt_to_phys()
>
> it might be the exact same implementation, inside the platform
> internals, but drivers should not be using this directly.
I've replaced this with dma_map_single(), unmatched with
dma_unmap_single(), since bestcomm doesn't have a way to do that
and it's blank on ppc32 anyway.
Is this OK? PPC guys?
>
> >+{
> >+ struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> >+ int err = -EBUSY;
> >+
> >+ if (request_irq(dev->irq, &mpc52xx_fec_interrupt, IRQF_DISABLED |
> >IRQF_SHARED,
>
> why IRQF_DISABLED? that should not be needed.
Removed all three occurances.
> >+ bd->status = skb->len | BCOM_FEC_TX_BD_TFD | BCOM_FEC_TX_BD_TC;
> >+ bd->skb_pa = virt_to_phys(skb->data);
>
> use dma_xxx
dma_map_single
>
> >+ bcom_submit_next_buffer(priv->tx_dmatsk, skb);
> >+
> >+ if (bcom_queue_full(priv->tx_dmatsk)) {
> >+ priv->tx_full = 1;
>
> no need for your own tx_full variable
I'm not sure what I should do here.
It does it internally, so just removing tx_full is OK?
> >+ dev_kfree_skb_irq(skb);
> >+ }
> >+
> >+ if (netif_queue_stopped(dev) && !priv->tx_full)
>
> no need to test netif_queue_stopped(), netif_wake_queue() does that anyway
>
> no need for tx_full
OK.
> >+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);
>
> generally wise to check for 0xffffffff, which often indicates hardware
> fault / device not there / scrogged
It's on the CPU, so it has to be there :-)
dev_warn and fec_reset would catch that anyway.
>
>
> >+ 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;
> >+}
> >+
> >+
> >+ memset(&priv->stats, 0, sizeof(priv->stats));
>
> don't use your own copy of net_device_stats, it's in net_device now
Nice. OK.
>
>
> >+/*
> >+ * 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);
>
> fall back to ALLMULTI behavior if dev->mc_count is too large (for your
> chip's version of "too large")
Uh, as far as I understand, this gaddr is some mask of which packages to
receive? IOW. if dmi_addrs are just right, it'll become IFF_ALLMULTI
anyway.
>
> >+/* ethtool interface */
> >+static void mpc52xx_fec_get_drvinfo(struct net_device *dev,
> >+ struct ethtool_drvinfo *info)
> >+{
> >+ strcpy(info->driver, DRIVER_NAME);
>
> version? anything else?
Version is Linux version. What else?
I think the only reason I implemented this was because some tool
didn't want to play without it.
>
>
> >+ ndev->watchdog_timeo = FEC_WATCHDOG_TIMEOUT;
> >+ ndev->flags &= ~IFF_RUNNING;
>
> delete this, no reason to ever touch IFF_RUNNING yourself
OK.
>
> >+ 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;
>
> netif_msg_init
OK. Also added "debug" module parameter now.
>
>
> >+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;
>
> testing for impossible condition
Removed now.
Version incorporating fixes:
--- cut here ;-) ---
Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
---
drivers/net/Kconfig | 24
drivers/net/Makefile | 4
drivers/net/fec_mpc52xx.c | 1109 ++++++++++++++++++++++++++++++++++++++++++
drivers/net/fec_mpc52xx.h | 313 +++++++++++
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
@@ -1880,6 +1880,30 @@ 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 +1,1109 @@
+/*
+ * 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 Domen Puncer, Telargo, Inc.
+ * Copyright (C) 2007 Sylvain Munaut <tnt@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");
+
+#define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \
+ NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFDOWN )
+static int debug = -1; /* the above default */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "debugging messages level");
+
+static void mpc52xx_fec_tx_timeout(struct net_device *dev)
+{
+ dev_warn(&dev->dev, "transmit timed out\n");
+
+ mpc52xx_fec_reset(dev);
+
+ dev->stats.tx_errors++;
+
+ 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 net_device *dev, 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 = dma_map_single(&dev->dev, skb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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_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, 0,
+ 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, 0,
+ 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(dev, 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 = dma_map_single(&dev->dev, skb->data, skb->len, DMA_TO_DEVICE);
+
+ bcom_submit_next_buffer(priv->tx_dmatsk, skb);
+
+ if (bcom_queue_full(priv->tx_dmatsk)) {
+ 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);
+ /* Here (and in rx routines) would be a good place for
+ * dma_unmap_single(), but bcom doesn't return bcom_bd of the
+ * finished transfer, and _unmap is empty on this platfrom.
+ */
+
+ dev_kfree_skb_irq(skb);
+ }
+
+ 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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
+
+ dev->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");
+ dev->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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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 = &dev->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(&dev->stats, 0, sizeof(dev->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);
+}
+
+/**
+ * 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(dev, 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->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_init(debug, MPC52xx_MESSAGES_DEFAULT);
+ 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);
+ 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 +1,313 @@
+/*
+ * drivers/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/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 r_irq;
+ int t_irq;
+ struct mpc52xx_fec __iomem *fec;
+ struct bcom_task *rx_dmatsk;
+ struct bcom_task *tx_dmatsk;
+ spinlock_t lock;
+ 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");
--
Domen Puncer | Research & Development
.............................................................................................
Telargo d.o.o. | Zagrebška cesta 20 | 2000 Maribor | Slovenia
.............................................................................................
www.telargo.com
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
@ 2007-10-25 14:10 ` Domen Puncer
0 siblings, 0 replies; 48+ messages in thread
From: Domen Puncer @ 2007-10-25 14:10 UTC (permalink / raw)
To: Jeff Garzik; +Cc: Grant Likely, galak, linuxppc-dev, tnt, netdev
On 25/10/07 05:29 -0400, Jeff Garzik wrote:
> Domen Puncer wrote:
> >+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);
>
> use your platform's dma mapping functions, rather than virt_to_phys()
>
> it might be the exact same implementation, inside the platform
> internals, but drivers should not be using this directly.
I've replaced this with dma_map_single(), unmatched with
dma_unmap_single(), since bestcomm doesn't have a way to do that
and it's blank on ppc32 anyway.
Is this OK? PPC guys?
>
> >+{
> >+ struct mpc52xx_fec_priv *priv = netdev_priv(dev);
> >+ int err = -EBUSY;
> >+
> >+ if (request_irq(dev->irq, &mpc52xx_fec_interrupt, IRQF_DISABLED |
> >IRQF_SHARED,
>
> why IRQF_DISABLED? that should not be needed.
Removed all three occurances.
> >+ bd->status = skb->len | BCOM_FEC_TX_BD_TFD | BCOM_FEC_TX_BD_TC;
> >+ bd->skb_pa = virt_to_phys(skb->data);
>
> use dma_xxx
dma_map_single
>
> >+ bcom_submit_next_buffer(priv->tx_dmatsk, skb);
> >+
> >+ if (bcom_queue_full(priv->tx_dmatsk)) {
> >+ priv->tx_full = 1;
>
> no need for your own tx_full variable
I'm not sure what I should do here.
It does it internally, so just removing tx_full is OK?
> >+ dev_kfree_skb_irq(skb);
> >+ }
> >+
> >+ if (netif_queue_stopped(dev) && !priv->tx_full)
>
> no need to test netif_queue_stopped(), netif_wake_queue() does that anyway
>
> no need for tx_full
OK.
> >+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);
>
> generally wise to check for 0xffffffff, which often indicates hardware
> fault / device not there / scrogged
It's on the CPU, so it has to be there :-)
dev_warn and fec_reset would catch that anyway.
>
>
> >+ 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;
> >+}
> >+
> >+
> >+ memset(&priv->stats, 0, sizeof(priv->stats));
>
> don't use your own copy of net_device_stats, it's in net_device now
Nice. OK.
>
>
> >+/*
> >+ * 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);
>
> fall back to ALLMULTI behavior if dev->mc_count is too large (for your
> chip's version of "too large")
Uh, as far as I understand, this gaddr is some mask of which packages to
receive? IOW. if dmi_addrs are just right, it'll become IFF_ALLMULTI
anyway.
>
> >+/* ethtool interface */
> >+static void mpc52xx_fec_get_drvinfo(struct net_device *dev,
> >+ struct ethtool_drvinfo *info)
> >+{
> >+ strcpy(info->driver, DRIVER_NAME);
>
> version? anything else?
Version is Linux version. What else?
I think the only reason I implemented this was because some tool
didn't want to play without it.
>
>
> >+ ndev->watchdog_timeo = FEC_WATCHDOG_TIMEOUT;
> >+ ndev->flags &= ~IFF_RUNNING;
>
> delete this, no reason to ever touch IFF_RUNNING yourself
OK.
>
> >+ 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;
>
> netif_msg_init
OK. Also added "debug" module parameter now.
>
>
> >+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;
>
> testing for impossible condition
Removed now.
Version incorporating fixes:
--- cut here ;-) ---
Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
---
drivers/net/Kconfig | 24
drivers/net/Makefile | 4
drivers/net/fec_mpc52xx.c | 1109 ++++++++++++++++++++++++++++++++++++++++++
drivers/net/fec_mpc52xx.h | 313 +++++++++++
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
@@ -1880,6 +1880,30 @@ 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 +1,1109 @@
+/*
+ * 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 Domen Puncer, Telargo, Inc.
+ * Copyright (C) 2007 Sylvain Munaut <tnt@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");
+
+#define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \
+ NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFDOWN )
+static int debug = -1; /* the above default */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "debugging messages level");
+
+static void mpc52xx_fec_tx_timeout(struct net_device *dev)
+{
+ dev_warn(&dev->dev, "transmit timed out\n");
+
+ mpc52xx_fec_reset(dev);
+
+ dev->stats.tx_errors++;
+
+ 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 net_device *dev, 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 = dma_map_single(&dev->dev, skb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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_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, 0,
+ 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, 0,
+ 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(dev, 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 = dma_map_single(&dev->dev, skb->data, skb->len, DMA_TO_DEVICE);
+
+ bcom_submit_next_buffer(priv->tx_dmatsk, skb);
+
+ if (bcom_queue_full(priv->tx_dmatsk)) {
+ 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);
+ /* Here (and in rx routines) would be a good place for
+ * dma_unmap_single(), but bcom doesn't return bcom_bd of the
+ * finished transfer, and _unmap is empty on this platfrom.
+ */
+
+ dev_kfree_skb_irq(skb);
+ }
+
+ 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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
+
+ dev->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");
+ dev->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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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 = &dev->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(&dev->stats, 0, sizeof(dev->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);
+}
+
+/**
+ * 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(dev, 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->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_init(debug, MPC52xx_MESSAGES_DEFAULT);
+ 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);
+ 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 +1,313 @@
+/*
+ * drivers/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/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 r_irq;
+ int t_irq;
+ struct mpc52xx_fec __iomem *fec;
+ struct bcom_task *rx_dmatsk;
+ struct bcom_task *tx_dmatsk;
+ spinlock_t lock;
+ 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");
--
Domen Puncer | Research & Development
.............................................................................................
Telargo d.o.o. | Zagrebška cesta 20 | 2000 Maribor | Slovenia
.............................................................................................
www.telargo.com
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
2007-10-25 14:10 ` Domen Puncer
(?)
@ 2007-10-25 18:57 ` Dale Farnsworth
2007-10-25 19:41 ` Domen Puncer
-1 siblings, 1 reply; 48+ messages in thread
From: Dale Farnsworth @ 2007-10-25 18:57 UTC (permalink / raw)
To: domen.puncer; +Cc: netdev, linuxppc-dev
Domen wrote:
> > use your platform's dma mapping functions, rather than virt_to_phys()
> >
> > it might be the exact same implementation, inside the platform
> > internals, but drivers should not be using this directly.
>
> I've replaced this with dma_map_single(), unmatched with
> dma_unmap_single(), since bestcomm doesn't have a way to do that
> and it's blank on ppc32 anyway.
>
> Is this OK? PPC guys?
Even though dma_unmap_single() may be a no-op, calls to
dma_map_single() must be matched with calls to dma_unmap_single().
Perhaps with the additions below:
> +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);
dma_unmap_single(&skb->dev->dev, skb-data,
FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
> + kfree_skb(skb);
> + }
> +}
> +
> +static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, 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;
skb->dev = dev;
> +
> + /* 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 = dma_map_single(&dev->dev, skb->data,
> + FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
> +
> + bcom_submit_next_buffer(rxtsk, skb);
> + }
> +
> + return 0;
> +}
[...]
> +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 = dma_map_single(&dev->dev, skb->data, skb->len, DMA_TO_DEVICE);
> +
> + bcom_submit_next_buffer(priv->tx_dmatsk, skb);
> +
> + if (bcom_queue_full(priv->tx_dmatsk)) {
> + 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);
> + /* Here (and in rx routines) would be a good place for
> + * dma_unmap_single(), but bcom doesn't return bcom_bd of the
> + * finished transfer, and _unmap is empty on this platfrom.
> + */
Replace the above comment with:
dma_unmap_single(&dev->dev, skb->data,
skb->len, DMA_TO_DEVICE);
> +
> + dev_kfree_skb_irq(skb);
> + }
> +
> + 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);
dma_unmap_single(&dev->dev, rskb->data,
FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
> +
> + /* 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 = dma_map_single(&dev->dev, rskb->data,
> + FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
> +
> + bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
> +
> + dev->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->dev = dev;
> +
> + skb_put(rskb, length - 4); /* length without CRC32 */
> +
> + rskb->dev = dev;
Above line is no longer needed since we set rskb->dev on skb allocation.
> + 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");
> + dev->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 = dma_map_single(&dev->dev, rskb->data,
> + FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
> +
> + bcom_submit_next_buffer(priv->rx_dmatsk, skb);
> + }
> +
> + return IRQ_HANDLED;
> +}
-Dale Farnsworth
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
2007-10-25 18:57 ` Dale Farnsworth
@ 2007-10-25 19:41 ` Domen Puncer
2007-10-25 20:29 ` Dale Farnsworth
0 siblings, 1 reply; 48+ messages in thread
From: Domen Puncer @ 2007-10-25 19:41 UTC (permalink / raw)
To: Dale Farnsworth; +Cc: netdev, linuxppc-dev
On 25/10/07 11:57 -0700, Dale Farnsworth wrote:
> Domen wrote:
> > > use your platform's dma mapping functions, rather than virt_to_phys()
> > >
> > > it might be the exact same implementation, inside the platform
> > > internals, but drivers should not be using this directly.
> >
> > I've replaced this with dma_map_single(), unmatched with
> > dma_unmap_single(), since bestcomm doesn't have a way to do that
> > and it's blank on ppc32 anyway.
> >
> > Is this OK? PPC guys?
>
> Even though dma_unmap_single() may be a no-op, calls to
> dma_map_single() must be matched with calls to dma_unmap_single().
>
> Perhaps with the additions below:
>
> > +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);
>
> dma_unmap_single(&skb->dev->dev, skb-data,
> FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
It looks to me like dma_unmap_single takes the mapped address
(what dma_map_single returned), and not the address we're mapping
(skb->data).
Domen
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
2007-10-25 19:41 ` Domen Puncer
@ 2007-10-25 20:29 ` Dale Farnsworth
2007-10-25 22:46 ` Jeff Garzik
` (2 more replies)
0 siblings, 3 replies; 48+ messages in thread
From: Dale Farnsworth @ 2007-10-25 20:29 UTC (permalink / raw)
To: Domen Puncer; +Cc: netdev, linuxppc-dev
On Thu, Oct 25, 2007 at 09:41:14PM +0200, Domen Puncer wrote:
> On 25/10/07 11:57 -0700, Dale Farnsworth wrote:
> > Domen wrote:
> > > > use your platform's dma mapping functions, rather than virt_to_phys()
> > > >
> > > > it might be the exact same implementation, inside the platform
> > > > internals, but drivers should not be using this directly.
> > >
> > > I've replaced this with dma_map_single(), unmatched with
> > > dma_unmap_single(), since bestcomm doesn't have a way to do that
> > > and it's blank on ppc32 anyway.
> > >
> > > Is this OK? PPC guys?
> >
> > Even though dma_unmap_single() may be a no-op, calls to
> > dma_map_single() must be matched with calls to dma_unmap_single().
> >
> > Perhaps with the additions below:
> >
> > > +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);
> >
> > dma_unmap_single(&skb->dev->dev, skb-data,
> > FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
>
> It looks to me like dma_unmap_single takes the mapped address
> (what dma_map_single returned), and not the address we're mapping
> (skb->data).
Yeah. Sorry. That won't be so easy. We'll either need to
squirrel away the mapped address, or change the interface to
bcom_retrieve_buffers() so we can get the address.
IMO, it's still a requirement that we call dma_unmap_single() for
each call to dma_map_single().
-Dale
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
2007-10-25 20:29 ` Dale Farnsworth
@ 2007-10-25 22:46 ` Jeff Garzik
2007-10-25 23:50 ` Stephen Hemminger
2007-10-26 11:59 ` Domen Puncer
2 siblings, 0 replies; 48+ messages in thread
From: Jeff Garzik @ 2007-10-25 22:46 UTC (permalink / raw)
To: Dale Farnsworth; +Cc: netdev, Domen Puncer, linuxppc-dev
Dale Farnsworth wrote:
> IMO, it's still a requirement that we call dma_unmap_single() for
> each call to dma_map_single().
Yep...
^ permalink raw reply [flat|nested] 48+ messages in thread
* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
2007-10-25 20:29 ` Dale Farnsworth
@ 2007-10-25 23:50 ` Stephen Hemminger
2007-10-25 23:50 ` Stephen Hemminger
2007-10-26 11:59 ` Domen Puncer
2 siblings, 0 replies; 48+ messages in thread
From: Stephen Hemminger @ 2007-10-25 23:50 UTC (permalink / raw)
To: Dale Farnsworth; +Cc: netdev, Domen Puncer, linuxppc-dev
On Thu, 25 Oct 2007 13:29:08 -0700
"Dale Farnsworth" <dale@farnsworth.org> wrote:
> On Thu, Oct 25, 2007 at 09:41:14PM +0200, Domen Puncer wrote:
> > On 25/10/07 11:57 -0700, Dale Farnsworth wrote:
> > > Domen wrote:
> > > > > use your platform's dma mapping functions, rather than virt_to_phys()
> > > > >
> > > > > it might be the exact same implementation, inside the platform
> > > > > internals, but drivers should not be using this directly.
> > > >
> > > > I've replaced this with dma_map_single(), unmatched with
> > > > dma_unmap_single(), since bestcomm doesn't have a way to do that
> > > > and it's blank on ppc32 anyway.
> > > >
> > > > Is this OK? PPC guys?
> > >
> > > Even though dma_unmap_single() may be a no-op, calls to
> > > dma_map_single() must be matched with calls to dma_unmap_single().
> > >
> > > Perhaps with the additions below:
> > >
> > > > +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);
> > >
> > > dma_unmap_single(&skb->dev->dev, skb-data,
> > > FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
> >
> > It looks to me like dma_unmap_single takes the mapped address
> > (what dma_map_single returned), and not the address we're mapping
> > (skb->data).
>
> Yeah. Sorry. That won't be so easy. We'll either need to
> squirrel away the mapped address, or change the interface to
> bcom_retrieve_buffers() so we can get the address.
>
> IMO, it's still a requirement that we call dma_unmap_single() for
> each call to dma_map_single().
>
There exist some macro's for pci stuff to handle the nop case well
see: pci_unmap_addr(), pci_unmap_len().
--
Stephen Hemminger <shemminger@linux-foundation.org>
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
@ 2007-10-25 23:50 ` Stephen Hemminger
0 siblings, 0 replies; 48+ messages in thread
From: Stephen Hemminger @ 2007-10-25 23:50 UTC (permalink / raw)
To: Dale Farnsworth; +Cc: Domen Puncer, netdev, linuxppc-dev
On Thu, 25 Oct 2007 13:29:08 -0700
"Dale Farnsworth" <dale@farnsworth.org> wrote:
> On Thu, Oct 25, 2007 at 09:41:14PM +0200, Domen Puncer wrote:
> > On 25/10/07 11:57 -0700, Dale Farnsworth wrote:
> > > Domen wrote:
> > > > > use your platform's dma mapping functions, rather than virt_to_phys()
> > > > >
> > > > > it might be the exact same implementation, inside the platform
> > > > > internals, but drivers should not be using this directly.
> > > >
> > > > I've replaced this with dma_map_single(), unmatched with
> > > > dma_unmap_single(), since bestcomm doesn't have a way to do that
> > > > and it's blank on ppc32 anyway.
> > > >
> > > > Is this OK? PPC guys?
> > >
> > > Even though dma_unmap_single() may be a no-op, calls to
> > > dma_map_single() must be matched with calls to dma_unmap_single().
> > >
> > > Perhaps with the additions below:
> > >
> > > > +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);
> > >
> > > dma_unmap_single(&skb->dev->dev, skb-data,
> > > FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
> >
> > It looks to me like dma_unmap_single takes the mapped address
> > (what dma_map_single returned), and not the address we're mapping
> > (skb->data).
>
> Yeah. Sorry. That won't be so easy. We'll either need to
> squirrel away the mapped address, or change the interface to
> bcom_retrieve_buffers() so we can get the address.
>
> IMO, it's still a requirement that we call dma_unmap_single() for
> each call to dma_map_single().
>
There exist some macro's for pci stuff to handle the nop case well
see: pci_unmap_addr(), pci_unmap_len().
--
Stephen Hemminger <shemminger@linux-foundation.org>
^ permalink raw reply [flat|nested] 48+ messages in thread
* [PATCH v4.2] FEC - fast ethernet controller for mpc52xx
2007-10-25 20:29 ` Dale Farnsworth
@ 2007-10-26 11:59 ` Domen Puncer
2007-10-25 23:50 ` Stephen Hemminger
2007-10-26 11:59 ` Domen Puncer
2 siblings, 0 replies; 48+ messages in thread
From: Domen Puncer @ 2007-10-26 11:59 UTC (permalink / raw)
To: Jeff Garzik; +Cc: linuxppc-dev, netdev
On 25/10/07 13:29 -0700, Dale Farnsworth wrote:
> On Thu, Oct 25, 2007 at 09:41:14PM +0200, Domen Puncer wrote:
> > On 25/10/07 11:57 -0700, Dale Farnsworth wrote:
> > > Domen wrote:
> > > > > use your platform's dma mapping functions, rather than virt_to_phys()
> > > > >
> > > > > it might be the exact same implementation, inside the platform
> > > > > internals, but drivers should not be using this directly.
> > > >
> > > > I've replaced this with dma_map_single(), unmatched with
> > > > dma_unmap_single(), since bestcomm doesn't have a way to do that
> > > > and it's blank on ppc32 anyway.
> > > >
> > > > Is this OK? PPC guys?
> > >
> > > Even though dma_unmap_single() may be a no-op, calls to
> > > dma_map_single() must be matched with calls to dma_unmap_single().
> > >
> > > Perhaps with the additions below:
> > >
> > > > +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);
> > >
> > > dma_unmap_single(&skb->dev->dev, skb-data,
> > > FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
> >
> > It looks to me like dma_unmap_single takes the mapped address
> > (what dma_map_single returned), and not the address we're mapping
> > (skb->data).
>
> Yeah. Sorry. That won't be so easy. We'll either need to
> squirrel away the mapped address, or change the interface to
> bcom_retrieve_buffers() so we can get the address.
>
> IMO, it's still a requirement that we call dma_unmap_single() for
> each call to dma_map_single().
D'oh, I don't know what I was reading yesterday,
bcom_retrieve_buffers is just ok, used like that
+ struct bcom_fec_bd *bd;
+ struct sk_buff *skb;
+
+ skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
And the (final?) version:
--- cut here ;-) ---
Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
---
drivers/net/Kconfig | 24
drivers/net/Makefile | 4
drivers/net/fec_mpc52xx.c | 1116 ++++++++++++++++++++++++++++++++++++++++++
drivers/net/fec_mpc52xx.h | 313 +++++++++++
drivers/net/fec_mpc52xx_phy.c | 198 +++++++
5 files changed, 1655 insertions(+)
Index: linux.git/drivers/net/Kconfig
===================================================================
--- linux.git.orig/drivers/net/Kconfig
+++ linux.git/drivers/net/Kconfig
@@ -1880,6 +1880,30 @@ 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 +1,1116 @@
+/*
+ * 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 Domen Puncer, Telargo, Inc.
+ * Copyright (C) 2007 Sylvain Munaut <tnt@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");
+
+#define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \
+ NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFDOWN )
+static int debug = -1; /* the above default */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "debugging messages level");
+
+static void mpc52xx_fec_tx_timeout(struct net_device *dev)
+{
+ dev_warn(&dev->dev, "transmit timed out\n");
+
+ mpc52xx_fec_reset(dev);
+
+ dev->stats.tx_errors++;
+
+ 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 net_device *dev, struct bcom_task *s)
+{
+ while (!bcom_queue_empty(s)) {
+ struct bcom_fec_bd *bd;
+ struct sk_buff *skb;
+
+ skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+ kfree_skb(skb);
+ }
+}
+
+static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, 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 = dma_map_single(&dev->dev, skb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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_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, 0,
+ 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, 0,
+ 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(dev, 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(dev, 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(dev, 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 = dma_map_single(&dev->dev, skb->data, skb->len, DMA_TO_DEVICE);
+
+ bcom_submit_next_buffer(priv->tx_dmatsk, skb);
+
+ if (bcom_queue_full(priv->tx_dmatsk)) {
+ 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;
+ struct bcom_fec_bd *bd;
+ skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
+ (struct bcom_bd **)&bd);
+ /* Here (and in rx routines) would be a good place for
+ * dma_unmap_single(), but bcom doesn't return bcom_bd of the
+ * finished transfer, and _unmap is empty on this platfrom.
+ */
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_TO_DEVICE);
+
+ dev_kfree_skb_irq(skb);
+ }
+
+ 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,
+ (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+
+ /* 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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
+
+ dev->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");
+ dev->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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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 = &dev->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(&dev->stats, 0, sizeof(dev->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);
+}
+
+/**
+ * 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(dev, 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(dev, 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->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_init(debug, MPC52xx_MESSAGES_DEFAULT);
+ 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);
+ 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 +1,313 @@
+/*
+ * drivers/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/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 r_irq;
+ int t_irq;
+ struct mpc52xx_fec __iomem *fec;
+ struct bcom_task *rx_dmatsk;
+ struct bcom_task *tx_dmatsk;
+ spinlock_t lock;
+ 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");
>
> -Dale
--
Domen Puncer | Research & Development
.............................................................................................
Telargo d.o.o. | Zagrebška cesta 20 | 2000 Maribor | Slovenia
.............................................................................................
www.telargo.com
^ permalink raw reply [flat|nested] 48+ messages in thread* [PATCH v4.2] FEC - fast ethernet controller for mpc52xx
@ 2007-10-26 11:59 ` Domen Puncer
0 siblings, 0 replies; 48+ messages in thread
From: Domen Puncer @ 2007-10-26 11:59 UTC (permalink / raw)
To: Jeff Garzik; +Cc: Dale Farnsworth, netdev, linuxppc-dev
On 25/10/07 13:29 -0700, Dale Farnsworth wrote:
> On Thu, Oct 25, 2007 at 09:41:14PM +0200, Domen Puncer wrote:
> > On 25/10/07 11:57 -0700, Dale Farnsworth wrote:
> > > Domen wrote:
> > > > > use your platform's dma mapping functions, rather than virt_to_phys()
> > > > >
> > > > > it might be the exact same implementation, inside the platform
> > > > > internals, but drivers should not be using this directly.
> > > >
> > > > I've replaced this with dma_map_single(), unmatched with
> > > > dma_unmap_single(), since bestcomm doesn't have a way to do that
> > > > and it's blank on ppc32 anyway.
> > > >
> > > > Is this OK? PPC guys?
> > >
> > > Even though dma_unmap_single() may be a no-op, calls to
> > > dma_map_single() must be matched with calls to dma_unmap_single().
> > >
> > > Perhaps with the additions below:
> > >
> > > > +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);
> > >
> > > dma_unmap_single(&skb->dev->dev, skb-data,
> > > FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
> >
> > It looks to me like dma_unmap_single takes the mapped address
> > (what dma_map_single returned), and not the address we're mapping
> > (skb->data).
>
> Yeah. Sorry. That won't be so easy. We'll either need to
> squirrel away the mapped address, or change the interface to
> bcom_retrieve_buffers() so we can get the address.
>
> IMO, it's still a requirement that we call dma_unmap_single() for
> each call to dma_map_single().
D'oh, I don't know what I was reading yesterday,
bcom_retrieve_buffers is just ok, used like that
+ struct bcom_fec_bd *bd;
+ struct sk_buff *skb;
+
+ skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
And the (final?) version:
--- cut here ;-) ---
Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
---
drivers/net/Kconfig | 24
drivers/net/Makefile | 4
drivers/net/fec_mpc52xx.c | 1116 ++++++++++++++++++++++++++++++++++++++++++
drivers/net/fec_mpc52xx.h | 313 +++++++++++
drivers/net/fec_mpc52xx_phy.c | 198 +++++++
5 files changed, 1655 insertions(+)
Index: linux.git/drivers/net/Kconfig
===================================================================
--- linux.git.orig/drivers/net/Kconfig
+++ linux.git/drivers/net/Kconfig
@@ -1880,6 +1880,30 @@ 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 +1,1116 @@
+/*
+ * 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 Domen Puncer, Telargo, Inc.
+ * Copyright (C) 2007 Sylvain Munaut <tnt@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");
+
+#define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \
+ NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFDOWN )
+static int debug = -1; /* the above default */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "debugging messages level");
+
+static void mpc52xx_fec_tx_timeout(struct net_device *dev)
+{
+ dev_warn(&dev->dev, "transmit timed out\n");
+
+ mpc52xx_fec_reset(dev);
+
+ dev->stats.tx_errors++;
+
+ 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 net_device *dev, struct bcom_task *s)
+{
+ while (!bcom_queue_empty(s)) {
+ struct bcom_fec_bd *bd;
+ struct sk_buff *skb;
+
+ skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+ kfree_skb(skb);
+ }
+}
+
+static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, 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 = dma_map_single(&dev->dev, skb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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_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, 0,
+ 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, 0,
+ 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(dev, 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(dev, 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(dev, 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 = dma_map_single(&dev->dev, skb->data, skb->len, DMA_TO_DEVICE);
+
+ bcom_submit_next_buffer(priv->tx_dmatsk, skb);
+
+ if (bcom_queue_full(priv->tx_dmatsk)) {
+ 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;
+ struct bcom_fec_bd *bd;
+ skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
+ (struct bcom_bd **)&bd);
+ /* Here (and in rx routines) would be a good place for
+ * dma_unmap_single(), but bcom doesn't return bcom_bd of the
+ * finished transfer, and _unmap is empty on this platfrom.
+ */
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_TO_DEVICE);
+
+ dev_kfree_skb_irq(skb);
+ }
+
+ 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,
+ (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+
+ /* 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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
+
+ dev->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");
+ dev->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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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 = &dev->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(&dev->stats, 0, sizeof(dev->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);
+}
+
+/**
+ * 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(dev, 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(dev, 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->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_init(debug, MPC52xx_MESSAGES_DEFAULT);
+ 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);
+ 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 +1,313 @@
+/*
+ * drivers/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/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 r_irq;
+ int t_irq;
+ struct mpc52xx_fec __iomem *fec;
+ struct bcom_task *rx_dmatsk;
+ struct bcom_task *tx_dmatsk;
+ spinlock_t lock;
+ 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");
>
> -Dale
--
Domen Puncer | Research & Development
.............................................................................................
Telargo d.o.o. | Zagrebška cesta 20 | 2000 Maribor | Slovenia
.............................................................................................
www.telargo.com
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4.2] FEC - fast ethernet controller for mpc52xx
2007-10-26 11:59 ` Domen Puncer
@ 2007-10-26 14:18 ` Dale Farnsworth
-1 siblings, 0 replies; 48+ messages in thread
From: Dale Farnsworth @ 2007-10-26 14:18 UTC (permalink / raw)
To: Domen Puncer; +Cc: netdev, Jeff Garzik, linuxppc-dev
On Fri, Oct 26, 2007 at 01:59:09PM +0200, Domen Puncer wrote:
> +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;
> + struct bcom_fec_bd *bd;
> + skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
> + (struct bcom_bd **)&bd);
> + /* Here (and in rx routines) would be a good place for
> + * dma_unmap_single(), but bcom doesn't return bcom_bd of the
> + * finished transfer, and _unmap is empty on this platfrom.
> + */
Oops, you forgot to remove the above comment. :)
Otherwise,
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Domen, thanks for all your work on this. It's good to see it finally go in.
-Dale
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4.2] FEC - fast ethernet controller for mpc52xx
@ 2007-10-26 14:18 ` Dale Farnsworth
0 siblings, 0 replies; 48+ messages in thread
From: Dale Farnsworth @ 2007-10-26 14:18 UTC (permalink / raw)
To: Domen Puncer; +Cc: Jeff Garzik, netdev, linuxppc-dev
On Fri, Oct 26, 2007 at 01:59:09PM +0200, Domen Puncer wrote:
> +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;
> + struct bcom_fec_bd *bd;
> + skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
> + (struct bcom_bd **)&bd);
> + /* Here (and in rx routines) would be a good place for
> + * dma_unmap_single(), but bcom doesn't return bcom_bd of the
> + * finished transfer, and _unmap is empty on this platfrom.
> + */
Oops, you forgot to remove the above comment. :)
Otherwise,
Acked-by: Dale Farnsworth <dale@farnsworth.org>
Domen, thanks for all your work on this. It's good to see it finally go in.
-Dale
^ permalink raw reply [flat|nested] 48+ messages in thread* [PATCH v4.3] FEC - fast ethernet controller for mpc52xx
2007-10-26 14:18 ` Dale Farnsworth
@ 2007-10-26 16:07 ` Domen Puncer
-1 siblings, 0 replies; 48+ messages in thread
From: Domen Puncer @ 2007-10-26 16:07 UTC (permalink / raw)
To: Jeff Garzik; +Cc: linuxppc-dev, netdev
On 26/10/07 07:18 -0700, Dale Farnsworth wrote:
> On Fri, Oct 26, 2007 at 01:59:09PM +0200, Domen Puncer wrote:
> > +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;
> > + struct bcom_fec_bd *bd;
> > + skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
> > + (struct bcom_bd **)&bd);
> > + /* Here (and in rx routines) would be a good place for
> > + * dma_unmap_single(), but bcom doesn't return bcom_bd of the
> > + * finished transfer, and _unmap is empty on this platfrom.
> > + */
>
> Oops, you forgot to remove the above comment. :)
Argh!
Repost w/o the comment.
Sorry for receiving all this almost-spam.
>
> Otherwise,
> Acked-by: Dale Farnsworth <dale@farnsworth.org>
>
> Domen, thanks for all your work on this. It's good to see it finally go in.
>
> -Dale
--- again, use your scisors here ;-) ---
Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
---
drivers/net/Kconfig | 24
drivers/net/Makefile | 4
drivers/net/fec_mpc52xx.c | 1112 ++++++++++++++++++++++++++++++++++++++++++
drivers/net/fec_mpc52xx.h | 313 +++++++++++
drivers/net/fec_mpc52xx_phy.c | 198 +++++++
5 files changed, 1651 insertions(+)
Index: linux.git/drivers/net/Kconfig
===================================================================
--- linux.git.orig/drivers/net/Kconfig
+++ linux.git/drivers/net/Kconfig
@@ -1880,6 +1880,30 @@ 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 +1,1112 @@
+/*
+ * 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 Domen Puncer, Telargo, Inc.
+ * Copyright (C) 2007 Sylvain Munaut <tnt@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");
+
+#define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \
+ NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFDOWN )
+static int debug = -1; /* the above default */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "debugging messages level");
+
+static void mpc52xx_fec_tx_timeout(struct net_device *dev)
+{
+ dev_warn(&dev->dev, "transmit timed out\n");
+
+ mpc52xx_fec_reset(dev);
+
+ dev->stats.tx_errors++;
+
+ 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 net_device *dev, struct bcom_task *s)
+{
+ while (!bcom_queue_empty(s)) {
+ struct bcom_fec_bd *bd;
+ struct sk_buff *skb;
+
+ skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+ kfree_skb(skb);
+ }
+}
+
+static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, 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 = dma_map_single(&dev->dev, skb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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_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, 0,
+ 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, 0,
+ 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(dev, 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(dev, 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(dev, 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 = dma_map_single(&dev->dev, skb->data, skb->len, DMA_TO_DEVICE);
+
+ bcom_submit_next_buffer(priv->tx_dmatsk, skb);
+
+ if (bcom_queue_full(priv->tx_dmatsk)) {
+ 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;
+ struct bcom_fec_bd *bd;
+ skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
+ (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_TO_DEVICE);
+
+ dev_kfree_skb_irq(skb);
+ }
+
+ 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,
+ (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+
+ /* 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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
+
+ dev->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");
+ dev->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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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 = &dev->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(&dev->stats, 0, sizeof(dev->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);
+}
+
+/**
+ * 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(dev, 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(dev, 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->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_init(debug, MPC52xx_MESSAGES_DEFAULT);
+ 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);
+ 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 +1,313 @@
+/*
+ * drivers/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/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 r_irq;
+ int t_irq;
+ struct mpc52xx_fec __iomem *fec;
+ struct bcom_task *rx_dmatsk;
+ struct bcom_task *tx_dmatsk;
+ spinlock_t lock;
+ 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");
--
Domen Puncer | Research & Development
.............................................................................................
Telargo d.o.o. | Zagrebška cesta 20 | 2000 Maribor | Slovenia
.............................................................................................
www.telargo.com
^ permalink raw reply [flat|nested] 48+ messages in thread* [PATCH v4.3] FEC - fast ethernet controller for mpc52xx
@ 2007-10-26 16:07 ` Domen Puncer
0 siblings, 0 replies; 48+ messages in thread
From: Domen Puncer @ 2007-10-26 16:07 UTC (permalink / raw)
To: Jeff Garzik; +Cc: Dale Farnsworth, netdev, linuxppc-dev
On 26/10/07 07:18 -0700, Dale Farnsworth wrote:
> On Fri, Oct 26, 2007 at 01:59:09PM +0200, Domen Puncer wrote:
> > +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;
> > + struct bcom_fec_bd *bd;
> > + skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
> > + (struct bcom_bd **)&bd);
> > + /* Here (and in rx routines) would be a good place for
> > + * dma_unmap_single(), but bcom doesn't return bcom_bd of the
> > + * finished transfer, and _unmap is empty on this platfrom.
> > + */
>
> Oops, you forgot to remove the above comment. :)
Argh!
Repost w/o the comment.
Sorry for receiving all this almost-spam.
>
> Otherwise,
> Acked-by: Dale Farnsworth <dale@farnsworth.org>
>
> Domen, thanks for all your work on this. It's good to see it finally go in.
>
> -Dale
--- again, use your scisors here ;-) ---
Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Acked-by: Dale Farnsworth <dale@farnsworth.org>
---
drivers/net/Kconfig | 24
drivers/net/Makefile | 4
drivers/net/fec_mpc52xx.c | 1112 ++++++++++++++++++++++++++++++++++++++++++
drivers/net/fec_mpc52xx.h | 313 +++++++++++
drivers/net/fec_mpc52xx_phy.c | 198 +++++++
5 files changed, 1651 insertions(+)
Index: linux.git/drivers/net/Kconfig
===================================================================
--- linux.git.orig/drivers/net/Kconfig
+++ linux.git/drivers/net/Kconfig
@@ -1880,6 +1880,30 @@ 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 +1,1112 @@
+/*
+ * 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 Domen Puncer, Telargo, Inc.
+ * Copyright (C) 2007 Sylvain Munaut <tnt@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");
+
+#define MPC52xx_MESSAGES_DEFAULT ( NETIF_MSG_DRV | NETIF_MSG_PROBE | \
+ NETIF_MSG_LINK | NETIF_MSG_IFDOWN | NETIF_MSG_IFDOWN )
+static int debug = -1; /* the above default */
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "debugging messages level");
+
+static void mpc52xx_fec_tx_timeout(struct net_device *dev)
+{
+ dev_warn(&dev->dev, "transmit timed out\n");
+
+ mpc52xx_fec_reset(dev);
+
+ dev->stats.tx_errors++;
+
+ 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 net_device *dev, struct bcom_task *s)
+{
+ while (!bcom_queue_empty(s)) {
+ struct bcom_fec_bd *bd;
+ struct sk_buff *skb;
+
+ skb = bcom_retrieve_buffer(s, NULL, (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+ kfree_skb(skb);
+ }
+}
+
+static int mpc52xx_fec_alloc_rx_buffers(struct net_device *dev, 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 = dma_map_single(&dev->dev, skb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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_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, 0,
+ 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, 0,
+ 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(dev, 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(dev, 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(dev, 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 = dma_map_single(&dev->dev, skb->data, skb->len, DMA_TO_DEVICE);
+
+ bcom_submit_next_buffer(priv->tx_dmatsk, skb);
+
+ if (bcom_queue_full(priv->tx_dmatsk)) {
+ 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;
+ struct bcom_fec_bd *bd;
+ skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
+ (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_TO_DEVICE);
+
+ dev_kfree_skb_irq(skb);
+ }
+
+ 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,
+ (struct bcom_bd **)&bd);
+ dma_unmap_single(&dev->dev, bd->skb_pa, skb->len, DMA_FROM_DEVICE);
+
+ /* 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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ bcom_submit_next_buffer(priv->rx_dmatsk, rskb);
+
+ dev->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");
+ dev->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 = dma_map_single(&dev->dev, rskb->data,
+ FEC_RX_BUFFER_SIZE, DMA_FROM_DEVICE);
+
+ 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 = &dev->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(&dev->stats, 0, sizeof(dev->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);
+}
+
+/**
+ * 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(dev, 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(dev, 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->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_init(debug, MPC52xx_MESSAGES_DEFAULT);
+ 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);
+ 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 +1,313 @@
+/*
+ * drivers/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/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 r_irq;
+ int t_irq;
+ struct mpc52xx_fec __iomem *fec;
+ struct bcom_task *rx_dmatsk;
+ struct bcom_task *tx_dmatsk;
+ spinlock_t lock;
+ 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");
--
Domen Puncer | Research & Development
.............................................................................................
Telargo d.o.o. | Zagrebška cesta 20 | 2000 Maribor | Slovenia
.............................................................................................
www.telargo.com
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4.3] FEC - fast ethernet controller for mpc52xx
2007-10-26 16:07 ` Domen Puncer
@ 2007-10-29 9:59 ` Jeff Garzik
-1 siblings, 0 replies; 48+ messages in thread
From: Jeff Garzik @ 2007-10-29 9:59 UTC (permalink / raw)
To: Domen Puncer; +Cc: linuxppc-dev, netdev
Domen Puncer wrote:
> On 26/10/07 07:18 -0700, Dale Farnsworth wrote:
>> On Fri, Oct 26, 2007 at 01:59:09PM +0200, Domen Puncer wrote:
>>> +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;
>>> + struct bcom_fec_bd *bd;
>>> + skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
>>> + (struct bcom_bd **)&bd);
>>> + /* Here (and in rx routines) would be a good place for
>>> + * dma_unmap_single(), but bcom doesn't return bcom_bd of the
>>> + * finished transfer, and _unmap is empty on this platfrom.
>>> + */
>> Oops, you forgot to remove the above comment. :)
>
> Argh!
>
> Repost w/o the comment.
> Sorry for receiving all this almost-spam.
>
>
>> Otherwise,
>> Acked-by: Dale Farnsworth <dale@farnsworth.org>
>>
>> Domen, thanks for all your work on this. It's good to see it finally go in.
>>
>> -Dale
>
> --- again, use your scisors here ;-) ---
>
>
> Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
>
>
> Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
> Acked-by: Dale Farnsworth <dale@farnsworth.org>
>
> ---
> drivers/net/Kconfig | 24
> drivers/net/Makefile | 4
> drivers/net/fec_mpc52xx.c | 1112 ++++++++++++++++++++++++++++++++++++++++++
> drivers/net/fec_mpc52xx.h | 313 +++++++++++
> drivers/net/fec_mpc52xx_phy.c | 198 +++++++
> 5 files changed, 1651 insertions(+)
applied to #upstream-fixes
it's not strictly a fix, but I did not want to hold this back until
2.6.25 either
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4.3] FEC - fast ethernet controller for mpc52xx
@ 2007-10-29 9:59 ` Jeff Garzik
0 siblings, 0 replies; 48+ messages in thread
From: Jeff Garzik @ 2007-10-29 9:59 UTC (permalink / raw)
To: Domen Puncer; +Cc: Dale Farnsworth, netdev, linuxppc-dev
Domen Puncer wrote:
> On 26/10/07 07:18 -0700, Dale Farnsworth wrote:
>> On Fri, Oct 26, 2007 at 01:59:09PM +0200, Domen Puncer wrote:
>>> +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;
>>> + struct bcom_fec_bd *bd;
>>> + skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL,
>>> + (struct bcom_bd **)&bd);
>>> + /* Here (and in rx routines) would be a good place for
>>> + * dma_unmap_single(), but bcom doesn't return bcom_bd of the
>>> + * finished transfer, and _unmap is empty on this platfrom.
>>> + */
>> Oops, you forgot to remove the above comment. :)
>
> Argh!
>
> Repost w/o the comment.
> Sorry for receiving all this almost-spam.
>
>
>> Otherwise,
>> Acked-by: Dale Farnsworth <dale@farnsworth.org>
>>
>> Domen, thanks for all your work on this. It's good to see it finally go in.
>>
>> -Dale
>
> --- again, use your scisors here ;-) ---
>
>
> Driver for ethernet on mpc5200/mpc5200b SoCs (FEC).
>
>
> Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
> Acked-by: Dale Farnsworth <dale@farnsworth.org>
>
> ---
> drivers/net/Kconfig | 24
> drivers/net/Makefile | 4
> drivers/net/fec_mpc52xx.c | 1112 ++++++++++++++++++++++++++++++++++++++++++
> drivers/net/fec_mpc52xx.h | 313 +++++++++++
> drivers/net/fec_mpc52xx_phy.c | 198 +++++++
> 5 files changed, 1651 insertions(+)
applied to #upstream-fixes
it's not strictly a fix, but I did not want to hold this back until
2.6.25 either
^ permalink raw reply [flat|nested] 48+ messages in thread* Re: [PATCH v4.3] FEC - fast ethernet controller for mpc52xx
2007-10-29 9:59 ` Jeff Garzik
@ 2007-10-29 15:37 ` Grant Likely
-1 siblings, 0 replies; 48+ messages in thread
From: Grant Likely @ 2007-10-29 15:37 UTC (permalink / raw)
To: Jeff Garzik; +Cc: linuxppc-dev, Domen Puncer, netdev
On 10/29/07, Jeff Garzik <jeff@garzik.org> wrote:
> Domen Puncer wrote:
> > drivers/net/Kconfig | 24
> > drivers/net/Makefile | 4
> > drivers/net/fec_mpc52xx.c | 1112 ++++++++++++++++++++++++++++++++++++++++++
> > drivers/net/fec_mpc52xx.h | 313 +++++++++++
> > drivers/net/fec_mpc52xx_phy.c | 198 +++++++
> > 5 files changed, 1651 insertions(+)
>
> applied to #upstream-fixes
>
> it's not strictly a fix, but I did not want to hold this back until
> 2.6.25 either
Fantastic! Thanks Jeff.
g.
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely@secretlab.ca
(403) 399-0195
^ permalink raw reply [flat|nested] 48+ messages in thread
* Re: [PATCH v4.3] FEC - fast ethernet controller for mpc52xx
@ 2007-10-29 15:37 ` Grant Likely
0 siblings, 0 replies; 48+ messages in thread
From: Grant Likely @ 2007-10-29 15:37 UTC (permalink / raw)
To: Jeff Garzik; +Cc: Domen Puncer, linuxppc-dev, netdev
On 10/29/07, Jeff Garzik <jeff@garzik.org> wrote:
> Domen Puncer wrote:
> > drivers/net/Kconfig | 24
> > drivers/net/Makefile | 4
> > drivers/net/fec_mpc52xx.c | 1112 ++++++++++++++++++++++++++++++++++++++++++
> > drivers/net/fec_mpc52xx.h | 313 +++++++++++
> > drivers/net/fec_mpc52xx_phy.c | 198 +++++++
> > 5 files changed, 1651 insertions(+)
>
> applied to #upstream-fixes
>
> it's not strictly a fix, but I did not want to hold this back until
> 2.6.25 either
Fantastic! Thanks Jeff.
g.
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
grant.likely@secretlab.ca
(403) 399-0195
^ permalink raw reply [flat|nested] 48+ messages in thread
* Re: [PATCH v4] FEC - fast ethernet controller for mpc52xx
2007-10-25 14:10 ` Domen Puncer
(?)
(?)
@ 2007-11-01 11:31 ` tnt
-1 siblings, 0 replies; 48+ messages in thread
From: tnt @ 2007-11-01 11:31 UTC (permalink / raw)
To: Domen Puncer; +Cc: netdev, linuxppc-dev, Jeff Garzik
> + while (bcom_buffer_done(priv->tx_dmatsk)) {
> + struct sk_buff *skb;
> + skb = bcom_retrieve_buffer(priv->tx_dmatsk, NULL, NULL);
> + /* Here (and in rx routines) would be a good place for
> + * dma_unmap_single(), but bcom doesn't return bcom_bd of the
> + * finished transfer, and _unmap is empty on this platfrom.
> + */
> +
Of course bestcomm let's you get back the bcom_bd ... What do you think
your second NULL parameter is for ?
Give it a pointer to a bcom_bd * and it will fill your pointer for you to
point to the bd you just got back.
Sylvain
^ permalink raw reply [flat|nested] 48+ messages in thread