diff options
Diffstat (limited to 'drivers/net/fs_enet/fs_enet-main.c')
| -rw-r--r-- | drivers/net/fs_enet/fs_enet-main.c | 93 |
1 files changed, 69 insertions, 24 deletions
diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c index ec2f5034457..0770e2f6da6 100644 --- a/drivers/net/fs_enet/fs_enet-main.c +++ b/drivers/net/fs_enet/fs_enet-main.c @@ -108,9 +108,7 @@ static int fs_enet_rx_napi(struct napi_struct *napi, int budget) * the last indicator should be set. */ if ((sc & BD_ENET_RX_LAST) == 0) - printk(KERN_WARNING DRV_MODULE_NAME - ": %s rcv is not +last\n", - dev->name); + dev_warn(fep->dev, "rcv is not +last\n"); /* * Check for errors. @@ -178,9 +176,8 @@ static int fs_enet_rx_napi(struct napi_struct *napi, int budget) received++; netif_receive_skb(skb); } else { - printk(KERN_WARNING DRV_MODULE_NAME - ": %s Memory squeeze, dropping packet.\n", - dev->name); + dev_warn(fep->dev, + "Memory squeeze, dropping packet.\n"); fep->stats.rx_dropped++; skbn = skb; } @@ -242,9 +239,7 @@ static int fs_enet_rx_non_napi(struct net_device *dev) * the last indicator should be set. */ if ((sc & BD_ENET_RX_LAST) == 0) - printk(KERN_WARNING DRV_MODULE_NAME - ": %s rcv is not +last\n", - dev->name); + dev_warn(fep->dev, "rcv is not +last\n"); /* * Check for errors. @@ -313,9 +308,8 @@ static int fs_enet_rx_non_napi(struct net_device *dev) received++; netif_rx(skb); } else { - printk(KERN_WARNING DRV_MODULE_NAME - ": %s Memory squeeze, dropping packet.\n", - dev->name); + dev_warn(fep->dev, + "Memory squeeze, dropping packet.\n"); fep->stats.rx_dropped++; skbn = skb; } @@ -388,10 +382,10 @@ static void fs_enet_tx(struct net_device *dev) } else fep->stats.tx_packets++; - if (sc & BD_ENET_TX_READY) - printk(KERN_WARNING DRV_MODULE_NAME - ": %s HEY! Enet xmit interrupt and TX_READY.\n", - dev->name); + if (sc & BD_ENET_TX_READY) { + dev_warn(fep->dev, + "HEY! Enet xmit interrupt and TX_READY.\n"); + } /* * Deferred means some collisions occurred during transmit, @@ -511,9 +505,8 @@ void fs_init_bds(struct net_device *dev) for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { skb = dev_alloc_skb(ENET_RX_FRSIZE); if (skb == NULL) { - printk(KERN_WARNING DRV_MODULE_NAME - ": %s Memory squeeze, unable to allocate skb\n", - dev->name); + dev_warn(fep->dev, + "Memory squeeze, unable to allocate skb\n"); break; } skb_align(skb, ENET_RX_ALIGN); @@ -587,6 +580,40 @@ void fs_cleanup_bds(struct net_device *dev) /**********************************************************************************/ +#ifdef CONFIG_FS_ENET_MPC5121_FEC +/* + * MPC5121 FEC requeries 4-byte alignment for TX data buffer! + */ +static struct sk_buff *tx_skb_align_workaround(struct net_device *dev, + struct sk_buff *skb) +{ + struct sk_buff *new_skb; + struct fs_enet_private *fep = netdev_priv(dev); + + /* Alloc new skb */ + new_skb = dev_alloc_skb(skb->len + 4); + if (!new_skb) { + if (net_ratelimit()) { + dev_warn(fep->dev, + "Memory squeeze, dropping tx packet.\n"); + } + return NULL; + } + + /* Make sure new skb is properly aligned */ + skb_align(new_skb, 4); + + /* Copy data to new skb ... */ + skb_copy_from_linear_data(skb, new_skb->data, skb->len); + skb_put(new_skb, skb->len); + + /* ... and free an old one */ + dev_kfree_skb_any(skb); + + return new_skb; +} +#endif + static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct fs_enet_private *fep = netdev_priv(dev); @@ -595,6 +622,19 @@ static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) u16 sc; unsigned long flags; +#ifdef CONFIG_FS_ENET_MPC5121_FEC + if (((unsigned long)skb->data) & 0x3) { + skb = tx_skb_align_workaround(dev, skb); + if (!skb) { + /* + * We have lost packet due to memory allocation error + * in tx_skb_align_workaround(). Hopefully original + * skb is still valid, so try transmit it later. + */ + return NETDEV_TX_BUSY; + } + } +#endif spin_lock_irqsave(&fep->tx_lock, flags); /* @@ -610,8 +650,7 @@ static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) * Ooops. All transmit buffers are full. Bail out. * This should not happen, since the tx queue should be stopped. */ - printk(KERN_WARNING DRV_MODULE_NAME - ": %s tx queue full!.\n", dev->name); + dev_warn(fep->dev, "tx queue full!.\n"); return NETDEV_TX_BUSY; } @@ -788,8 +827,7 @@ static int fs_enet_open(struct net_device *dev) r = request_irq(fep->interrupt, fs_enet_interrupt, IRQF_SHARED, "fs_enet-mac", dev); if (r != 0) { - printk(KERN_ERR DRV_MODULE_NAME - ": %s Could not allocate FS_ENET IRQ!", dev->name); + dev_err(fep->dev, "Could not allocate FS_ENET IRQ!"); if (fep->fpi->use_napi) napi_disable(&fep->napi); return -EINVAL; @@ -1053,7 +1091,7 @@ static int __devinit fs_enet_probe(struct of_device *ofdev, if (ret) goto out_free_bd; - printk(KERN_INFO "%s: fs_enet: %pM\n", ndev->name, ndev->dev_addr); + pr_info("%s: fs_enet: %pM\n", ndev->name, ndev->dev_addr); return 0; @@ -1103,11 +1141,18 @@ static struct of_device_id fs_enet_match[] = { }, #endif #ifdef CONFIG_FS_ENET_HAS_FEC +#ifdef CONFIG_FS_ENET_MPC5121_FEC + { + .compatible = "fsl,mpc5121-fec", + .data = (void *)&fs_fec_ops, + }, +#else { .compatible = "fsl,pq1-fec-enet", .data = (void *)&fs_fec_ops, }, #endif +#endif {} }; MODULE_DEVICE_TABLE(of, fs_enet_match); |