static int gfar_enet_open(struct net_device *dev);
static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev);
+static void gfar_reset_task(struct work_struct *work);
static void gfar_timeout(struct net_device *dev);
static int gfar_close(struct net_device *dev);
struct sk_buff *gfar_new_skb(struct net_device *dev);
static void gfar_vlan_rx_register(struct net_device *netdev,
struct vlan_group *grp);
void gfar_halt(struct net_device *dev);
-#ifdef CONFIG_PM
static void gfar_halt_nodisable(struct net_device *dev);
-#endif
void gfar_start(struct net_device *dev);
static void gfar_clear_exact_match(struct net_device *dev);
static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr);
struct gfar_private *priv = NULL;
struct gianfar_platform_data *einfo;
struct resource *r;
- int err = 0;
+ int err = 0, irq;
DECLARE_MAC_BUF(mac);
einfo = (struct gianfar_platform_data *) pdev->dev.platform_data;
/* fill out IRQ fields */
if (einfo->device_flags & FSL_GIANFAR_DEV_HAS_MULTI_INTR) {
- priv->interruptTransmit = platform_get_irq_byname(pdev, "tx");
- priv->interruptReceive = platform_get_irq_byname(pdev, "rx");
- priv->interruptError = platform_get_irq_byname(pdev, "error");
- if (priv->interruptTransmit < 0 || priv->interruptReceive < 0 || priv->interruptError < 0)
+ irq = platform_get_irq_byname(pdev, "tx");
+ if (irq < 0)
+ goto regs_fail;
+ priv->interruptTransmit = irq;
+
+ irq = platform_get_irq_byname(pdev, "rx");
+ if (irq < 0)
+ goto regs_fail;
+ priv->interruptReceive = irq;
+
+ irq = platform_get_irq_byname(pdev, "error");
+ if (irq < 0)
goto regs_fail;
+ priv->interruptError = irq;
} else {
- priv->interruptTransmit = platform_get_irq(pdev, 0);
- if (priv->interruptTransmit < 0)
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
goto regs_fail;
+ priv->interruptTransmit = irq;
}
/* get a pointer to the register memory */
spin_lock_init(&priv->txlock);
spin_lock_init(&priv->rxlock);
spin_lock_init(&priv->bflock);
+ INIT_WORK(&priv->reset_task, gfar_reset_task);
platform_set_drvdata(pdev, dev);
/* Enable most messages by default */
priv->msg_enable = (NETIF_MSG_IFUP << 1 ) - 1;
+ /* Carrier starts down, phylib will bring it up */
+ netif_carrier_off(dev);
+
err = register_netdev(dev);
if (err) {
spin_unlock(&priv->rxlock);
spin_unlock_irqrestore(&priv->txlock, flags);
-#ifdef CONFIG_GFAR_NAPI
napi_disable(&priv->napi);
-#endif
if (magic_packet) {
/* Enable interrupt on Magic Packet */
netif_device_attach(dev);
-#ifdef CONFIG_GFAR_NAPI
napi_enable(&priv->napi);
-#endif
return 0;
}
struct gfar_mii __iomem *regs =
(void __iomem *)&priv->regs->gfar_mii_regs;
int tbipa = gfar_read(&priv->regs->tbipa);
+ struct mii_bus *bus = gfar_get_miibus(priv);
+
+ if (bus)
+ mutex_lock(&bus->mdio_lock);
+
+ /* If the link is already up, we must already be ok, and don't need to
+ * configure and reset the TBI<->SerDes link. Maybe U-Boot configured
+ * everything for us? Resetting it takes the link down and requires
+ * several seconds for it to come back.
+ */
+ if (gfar_local_mdio_read(regs, tbipa, MII_BMSR) & BMSR_LSTATUS)
+ goto done;
/* Single clk mode, mii mode off(for serdes communication) */
gfar_local_mdio_write(regs, tbipa, MII_TBICON, TBICON_CLK_SELECT);
gfar_local_mdio_write(regs, tbipa, MII_BMCR, BMCR_ANENABLE |
BMCR_ANRESTART | BMCR_FULLDPLX | BMCR_SPEED1000);
+
+ done:
+ if (bus)
+ mutex_unlock(&bus->mdio_lock);
}
static void init_registers(struct net_device *dev)
}
-#ifdef CONFIG_PM
/* Halt the receive and transmit queues */
static void gfar_halt_nodisable(struct net_device *dev)
{
cpu_relax();
}
}
-#endif
/* Halt the receive and transmit queues */
void gfar_halt(struct net_device *dev)
struct gfar __iomem *regs = priv->regs;
u32 tempval;
+ gfar_halt_nodisable(dev);
+
/* Disable Rx and Tx */
tempval = gfar_read(®s->maccfg1);
tempval &= ~(MACCFG1_RX_EN | MACCFG1_TX_EN);
napi_disable(&priv->napi);
+ cancel_work_sync(&priv->reset_task);
stop_gfar(dev);
/* Disconnect from the PHY */
return 0;
}
-/* gfar_timeout gets called when a packet has not been
+/* gfar_reset_task gets scheduled when a packet has not been
* transmitted after a set amount of time.
* For now, assume that clearing out all the structures, and
- * starting over will fix the problem. */
-static void gfar_timeout(struct net_device *dev)
+ * starting over will fix the problem.
+ */
+static void gfar_reset_task(struct work_struct *work)
{
- dev->stats.tx_errors++;
+ struct gfar_private *priv = container_of(work, struct gfar_private,
+ reset_task);
+ struct net_device *dev = priv->dev;
if (dev->flags & IFF_UP) {
stop_gfar(dev);
netif_tx_schedule_all(dev);
}
+static void gfar_timeout(struct net_device *dev)
+{
+ struct gfar_private *priv = netdev_priv(dev);
+
+ dev->stats.tx_errors++;
+ schedule_work(&priv->reset_task);
+}
+
/* Interrupt Handler for Transmit complete */
static int gfar_clean_tx_ring(struct net_device *dev)
{