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r6040: recover from transmit timeout 

Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
This commit is contained in:
Florian Fainelli 2007-12-12 23:01:33 +01:00 committed by Francois Romieu
parent b4f1255d68
commit 106adf3c84
1 changed files with 33 additions and 24 deletions
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57
drivers/net/r6040.c
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@ -61,7 +61,6 @@
/* Time in jiffies before concluding the transmitter is hung. */ /* Time in jiffies before concluding the transmitter is hung. */
#define TX_TIMEOUT (6000 * HZ / 1000) #define TX_TIMEOUT (6000 * HZ / 1000)
#define TIMER_WUT (jiffies + HZ * 1)/* timer wakeup time : 1 second */
/* RDC MAC I/O Size */ /* RDC MAC I/O Size */
#define R6040_IO_SIZE 256 #define R6040_IO_SIZE 256
@ -266,19 +265,6 @@ static void r6040_free_rxbufs(struct net_device *dev)
} }
} }
static void r6040_tx_timeout(struct net_device *dev)
{
struct r6040_private *priv = netdev_priv(dev);
disable_irq(dev->irq);
napi_disable(&priv->napi);
spin_lock(&priv->lock);
dev->stats.tx_errors++;
spin_unlock(&priv->lock);
netif_stop_queue(dev);
}
static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring, static void r6040_init_ring_desc(struct r6040_descriptor *desc_ring,
dma_addr_t desc_dma, int size) dma_addr_t desc_dma, int size)
{ {
@ -350,6 +336,34 @@ static void r6040_alloc_rxbufs(struct net_device *dev)
iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1); iowrite16(lp->rx_ring_dma >> 16, ioaddr + MRD_SA1);
} }
static void r6040_tx_timeout(struct net_device *dev)
{
struct r6040_private *priv = netdev_priv(dev);
void __iomem *ioaddr = priv->base;
printk(KERN_WARNING "%s: transmit timed out, status %4.4x, PHY status "
"%4.4x\n",
dev->name, ioread16(ioaddr + MIER),
mdio_read(dev, priv->mii_if.phy_id, MII_BMSR));
disable_irq(dev->irq);
napi_disable(&priv->napi);
spin_lock(&priv->lock);
/* Clear all descriptors */
r6040_free_txbufs(dev);
r6040_free_rxbufs(dev);
r6040_alloc_txbufs(dev);
r6040_alloc_rxbufs(dev);
/* Reset MAC */
iowrite16(MAC_RST, ioaddr + MCR1);
spin_unlock(&priv->lock);
enable_irq(dev->irq);
dev->stats.tx_errors++;
netif_wake_queue(dev);
}
static struct net_device_stats *r6040_get_stats(struct net_device *dev) static struct net_device_stats *r6040_get_stats(struct net_device *dev)
{ {
struct r6040_private *priv = netdev_priv(dev); struct r6040_private *priv = netdev_priv(dev);
@ -719,8 +733,7 @@ static void r6040_timer(unsigned long data)
} }
/* Timer active again */ /* Timer active again */
lp->timer.expires = TIMER_WUT; mod_timer(&lp->timer, jiffies + round_jiffies(HZ));
add_timer(&lp->timer);
} }
/* Read/set MAC address routines */ /* Read/set MAC address routines */
@ -776,14 +789,10 @@ static int r6040_open(struct net_device *dev)
napi_enable(&lp->napi); napi_enable(&lp->napi);
netif_start_queue(dev); netif_start_queue(dev);
if (lp->switch_sig != ICPLUS_PHY_ID) { /* set and active a timer process */
/* set and active a timer process */ setup_timer(&lp->timer, r6040_timer, (unsigned long) dev);
init_timer(&lp->timer); if (lp->switch_sig != ICPLUS_PHY_ID)
lp->timer.expires = TIMER_WUT; mod_timer(&lp->timer, jiffies + HZ);
lp->timer.data = (unsigned long)dev;
lp->timer.function = &r6040_timer;
add_timer(&lp->timer);
}
return 0; return 0;
} }