From: John Crispin Date: Sun, 25 Oct 2009 00:11:08 +0000 (+0000) Subject: fixes dma hangups in eth X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=c23f92244cdb69c98b49a7441118464ceba74340;p=openwrt%2Fstaging%2Faparcar.git fixes dma hangups in eth SVN-Revision: 18139 --- diff --git a/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/eth.h b/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/eth.h index 27cf6dffff..efacc5d1ec 100644 --- a/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/eth.h +++ b/target/linux/ramips/files/arch/mips/include/asm/mach-ralink/eth.h @@ -199,15 +199,17 @@ struct ramips_eth_platform_data struct raeth_priv { unsigned int phy_rx; - struct tasklet_struct rx_tasklet; - struct ramips_rx_dma *rx; + struct tasklet_struct rx_tasklet; + struct ramips_rx_dma *rx; + struct sk_buff *rx_skb[NUM_RX_DESC]; unsigned int phy_tx; - struct tasklet_struct tx_housekeeping_tasklet; - struct ramips_tx_dma *tx; + struct tasklet_struct tx_housekeeping_tasklet; + struct ramips_tx_dma *tx; + struct sk_buff *tx_skb[NUM_RX_DESC]; - unsigned int skb_free_idx; - struct net_device_stats stat; + unsigned int skb_free_idx; + struct net_device_stats stat; struct ramips_eth_platform_data *plat; }; diff --git a/target/linux/ramips/files/drivers/net/ramips.c b/target/linux/ramips/files/drivers/net/ramips.c index 42d38ccda2..4ea81db744 100644 --- a/target/linux/ramips/files/drivers/net/ramips.c +++ b/target/linux/ramips/files/drivers/net/ramips.c @@ -91,7 +91,7 @@ ramips_alloc_dma(struct net_device *dev) dma_map_single(NULL, skb_put(new_skb, 2), MAX_RX_LENGTH + 2, PCI_DMA_FROMDEVICE); priv->rx[i].rxd2 |= RX_DMA_LSO; - priv->rx[i].rxd3 = (unsigned int)new_skb; + priv->rx_skb[i] = new_skb; } dma_cache_wback_inv((unsigned long)priv->rx, NUM_RX_DESC * (sizeof(struct ramips_rx_dma))); @@ -131,7 +131,7 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev) tx_next = 0; else tx_next = tx + 1; - if((priv->tx[tx].txd3 == 0) && (priv->tx[tx_next].txd3 == 0)) + if((priv->tx_skb[tx]== 0) && (priv->tx_skb[tx_next] == 0)) { if(!(priv->tx[tx].txd2 & TX_DMA_DONE)) { @@ -146,7 +146,7 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev) ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0); priv->stat.tx_packets++; priv->stat.tx_bytes += skb->len; - priv->tx[tx].txd3 = (unsigned int)skb; + priv->tx_skb[tx] = skb; ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0); } else { priv->stat.tx_dropped++; @@ -172,7 +172,7 @@ ramips_eth_rx_hw(unsigned long ptr) break; max_rx--; - rx_skb = (struct sk_buff*)priv->rx[rx].rxd3; + rx_skb = priv->rx_skb[rx]; rx_skb->len = RX_DMA_PLEN0(priv->rx[rx].rxd2); rx_skb->tail = rx_skb->data + rx_skb->len; rx_skb->dev = dev; @@ -183,7 +183,7 @@ ramips_eth_rx_hw(unsigned long ptr) netif_rx(rx_skb); new_skb = __dev_alloc_skb(MAX_RX_LENGTH + 2, GFP_DMA | GFP_ATOMIC); - priv->rx[rx].rxd3 = (unsigned int)new_skb; + priv->rx_skb[rx] = new_skb; BUG_ON(!new_skb); skb_reserve(new_skb, 2); priv->rx[rx].rxd1 = @@ -208,10 +208,10 @@ ramips_eth_tx_housekeeping(unsigned long ptr) struct raeth_priv *priv = (struct raeth_priv*)netdev_priv(dev); while((priv->tx[priv->skb_free_idx].txd2 & TX_DMA_DONE) && - (priv->tx[priv->skb_free_idx].txd3)) + (priv->tx_skb[priv->skb_free_idx])) { - dev_kfree_skb_irq((struct sk_buff*)priv->tx[priv->skb_free_idx].txd3); - priv->tx[priv->skb_free_idx].txd3 = 0; + dev_kfree_skb_irq((struct sk_buff*)priv->tx_skb[priv->skb_free_idx]); + priv->tx_skb[priv->skb_free_idx] = 0; priv->skb_free_idx++; if(priv->skb_free_idx >= NUM_TX_DESC) priv->skb_free_idx = 0; @@ -323,7 +323,7 @@ ramips_eth_probe(struct net_device *dev) struct raeth_priv *priv = (struct raeth_priv*)netdev_priv(dev); struct sockaddr addr; - BUG(!priv->plat->reset_fe); + BUG_ON(!priv->plat->reset_fe); priv->plat->reset_fe(); net_srandom(jiffies); memcpy(addr.sa_data, priv->plat->mac, 6); @@ -345,20 +345,21 @@ static int ramips_eth_plat_probe(struct platform_device *plat) { struct raeth_priv *priv; - - ramips_fe_base = ioremap_nocache(plat->base_addr, PAGE_SIZE); + struct ramips_eth_platform_data *data = + (struct ramips_eth_platform_data*)plat->dev.platform_data; + ramips_fe_base = ioremap_nocache(data->base_addr, PAGE_SIZE); if(!ramips_fe_base) return -ENOMEM; ramips_dev = alloc_etherdev(sizeof(struct raeth_priv)); if(!ramips_dev) return -ENOMEM; strcpy(ramips_dev->name, "eth%d"); - ramips_dev->irq = plat->irq; + ramips_dev->irq = data->irq; ramips_dev->addr_len = ETH_ALEN; ramips_dev->base_addr = (unsigned long)ramips_fe_base; ramips_dev->init = ramips_eth_probe; priv = (struct raeth_priv*)netdev_priv(ramips_dev); - priv->plat = (struct ramips_eth_platform_data*)plat->dev.platform_data; + priv->plat = data; if(register_netdev(ramips_dev)) { printk(KERN_ERR "ramips_eth: error bringing up device\n"); diff --git a/target/linux/ramips/files/drivers/net/ramips_esw.c b/target/linux/ramips/files/drivers/net/ramips_esw.c index a77060075b..f9d31c2fb4 100644 --- a/target/linux/ramips/files/drivers/net/ramips_esw.c +++ b/target/linux/ramips/files/drivers/net/ramips_esw.c @@ -1,3 +1,6 @@ +#include +#include + #define GPIO_PRUPOSE 0x60 #define GPIO_MDIO_BIT (1<<7) #define RT305X_ESW_PHY_WRITE (1 << 13)