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git://projects.qi-hardware.com/openwrt-xburst.git
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[ramips] fixes dma hangups in eth
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18139 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -201,10 +201,12 @@ struct raeth_priv
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unsigned int phy_rx;
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struct tasklet_struct rx_tasklet;
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struct ramips_rx_dma *rx;
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struct sk_buff *rx_skb[NUM_RX_DESC];
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unsigned int phy_tx;
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struct tasklet_struct tx_housekeeping_tasklet;
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struct ramips_tx_dma *tx;
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struct sk_buff *tx_skb[NUM_RX_DESC];
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unsigned int skb_free_idx;
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struct net_device_stats stat;
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@ -91,7 +91,7 @@ ramips_alloc_dma(struct net_device *dev)
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dma_map_single(NULL, skb_put(new_skb, 2), MAX_RX_LENGTH + 2,
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PCI_DMA_FROMDEVICE);
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priv->rx[i].rxd2 |= RX_DMA_LSO;
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priv->rx[i].rxd3 = (unsigned int)new_skb;
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priv->rx_skb[i] = new_skb;
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}
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dma_cache_wback_inv((unsigned long)priv->rx,
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NUM_RX_DESC * (sizeof(struct ramips_rx_dma)));
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@ -131,7 +131,7 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev)
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tx_next = 0;
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else
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tx_next = tx + 1;
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if((priv->tx[tx].txd3 == 0) && (priv->tx[tx_next].txd3 == 0))
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if((priv->tx_skb[tx]== 0) && (priv->tx_skb[tx_next] == 0))
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{
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if(!(priv->tx[tx].txd2 & TX_DMA_DONE))
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{
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@ -146,7 +146,7 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev)
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ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0);
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priv->stat.tx_packets++;
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priv->stat.tx_bytes += skb->len;
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priv->tx[tx].txd3 = (unsigned int)skb;
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priv->tx_skb[tx] = skb;
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ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0);
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} else {
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priv->stat.tx_dropped++;
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@ -172,7 +172,7 @@ ramips_eth_rx_hw(unsigned long ptr)
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break;
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max_rx--;
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rx_skb = (struct sk_buff*)priv->rx[rx].rxd3;
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rx_skb = priv->rx_skb[rx];
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rx_skb->len = RX_DMA_PLEN0(priv->rx[rx].rxd2);
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rx_skb->tail = rx_skb->data + rx_skb->len;
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rx_skb->dev = dev;
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@ -183,7 +183,7 @@ ramips_eth_rx_hw(unsigned long ptr)
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netif_rx(rx_skb);
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new_skb = __dev_alloc_skb(MAX_RX_LENGTH + 2, GFP_DMA | GFP_ATOMIC);
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priv->rx[rx].rxd3 = (unsigned int)new_skb;
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priv->rx_skb[rx] = new_skb;
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BUG_ON(!new_skb);
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skb_reserve(new_skb, 2);
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priv->rx[rx].rxd1 =
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@ -208,10 +208,10 @@ ramips_eth_tx_housekeeping(unsigned long ptr)
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struct raeth_priv *priv = (struct raeth_priv*)netdev_priv(dev);
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while((priv->tx[priv->skb_free_idx].txd2 & TX_DMA_DONE) &&
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(priv->tx[priv->skb_free_idx].txd3))
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(priv->tx_skb[priv->skb_free_idx]))
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{
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dev_kfree_skb_irq((struct sk_buff*)priv->tx[priv->skb_free_idx].txd3);
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priv->tx[priv->skb_free_idx].txd3 = 0;
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dev_kfree_skb_irq((struct sk_buff*)priv->tx_skb[priv->skb_free_idx]);
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priv->tx_skb[priv->skb_free_idx] = 0;
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priv->skb_free_idx++;
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if(priv->skb_free_idx >= NUM_TX_DESC)
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priv->skb_free_idx = 0;
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@ -323,7 +323,7 @@ ramips_eth_probe(struct net_device *dev)
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struct raeth_priv *priv = (struct raeth_priv*)netdev_priv(dev);
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struct sockaddr addr;
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BUG(!priv->plat->reset_fe);
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BUG_ON(!priv->plat->reset_fe);
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priv->plat->reset_fe();
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net_srandom(jiffies);
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memcpy(addr.sa_data, priv->plat->mac, 6);
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@ -345,20 +345,21 @@ static int
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ramips_eth_plat_probe(struct platform_device *plat)
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{
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struct raeth_priv *priv;
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ramips_fe_base = ioremap_nocache(plat->base_addr, PAGE_SIZE);
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struct ramips_eth_platform_data *data =
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(struct ramips_eth_platform_data*)plat->dev.platform_data;
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ramips_fe_base = ioremap_nocache(data->base_addr, PAGE_SIZE);
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if(!ramips_fe_base)
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return -ENOMEM;
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ramips_dev = alloc_etherdev(sizeof(struct raeth_priv));
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if(!ramips_dev)
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return -ENOMEM;
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strcpy(ramips_dev->name, "eth%d");
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ramips_dev->irq = plat->irq;
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ramips_dev->irq = data->irq;
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ramips_dev->addr_len = ETH_ALEN;
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ramips_dev->base_addr = (unsigned long)ramips_fe_base;
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ramips_dev->init = ramips_eth_probe;
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priv = (struct raeth_priv*)netdev_priv(ramips_dev);
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priv->plat = (struct ramips_eth_platform_data*)plat->dev.platform_data;
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priv->plat = data;
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if(register_netdev(ramips_dev))
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{
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printk(KERN_ERR "ramips_eth: error bringing up device\n");
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@ -1,3 +1,6 @@
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#include <rt305x.h>
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#include <rt305x_regs.h>
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#define GPIO_PRUPOSE 0x60
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#define GPIO_MDIO_BIT (1<<7)
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#define RT305X_ESW_PHY_WRITE (1 << 13)
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