diff options
| -rw-r--r-- | target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c b/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c index 8254026d22..c148bea94a 100644 --- a/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c +++ b/target/linux/mcs814x/files-3.3/drivers/net/ethernet/mcs8140/nuport_mac.c @@ -145,6 +145,7 @@ struct nuport_mac_priv { /* Transmit buffers */ struct sk_buff *tx_skb[TX_RING_SIZE]; + dma_addr_t tx_addr; unsigned int valid_txskb[TX_RING_SIZE]; unsigned int cur_tx; unsigned int dma_tx; @@ -152,6 +153,7 @@ struct nuport_mac_priv { /* Receive buffers */ struct sk_buff *rx_skb[RX_RING_SIZE]; + dma_addr_t rx_addr; unsigned int irq_rxskb[RX_RING_SIZE]; int pkt_len[RX_RING_SIZE]; unsigned int cur_rx; @@ -237,7 +239,6 @@ static int nuport_mac_mii_reset(struct mii_bus *bus) static int nuport_mac_start_tx_dma(struct nuport_mac_priv *priv, struct sk_buff *skb) { - dma_addr_t p; u32 reg; unsigned int timeout = 2048; @@ -253,12 +254,12 @@ static int nuport_mac_start_tx_dma(struct nuport_mac_priv *priv, if (!timeout) return -EBUSY; - p = dma_map_single(&priv->pdev->dev, skb->data, + priv->tx_addr = dma_map_single(&priv->pdev->dev, skb->data, skb->len, DMA_TO_DEVICE); /* enable enhanced mode */ nuport_mac_writel(TX_DMA_ENH_ENABLE, TX_DMA_ENH); - nuport_mac_writel(p, TX_BUFFER_ADDR); + nuport_mac_writel(priv->tx_addr, TX_BUFFER_ADDR); nuport_mac_writel((skb->len) - 1, TX_PKT_BYTES); wmb(); reg = TX_DMA_ENABLE | TX_DMA_START_FRAME | TX_DMA_END_FRAME; @@ -279,7 +280,6 @@ static void nuport_mac_reset_tx_dma(struct nuport_mac_priv *priv) static int nuport_mac_start_rx_dma(struct nuport_mac_priv *priv, struct sk_buff *skb) { - dma_addr_t p; u32 reg; unsigned int timeout = 2048; @@ -295,10 +295,10 @@ static int nuport_mac_start_rx_dma(struct nuport_mac_priv *priv, if (!timeout) return -EBUSY; - p = dma_map_single(&priv->pdev->dev, skb->data, + priv->rx_addr = dma_map_single(&priv->pdev->dev, skb->data, RX_ALLOC_SIZE, DMA_FROM_DEVICE); - nuport_mac_writel(p, RX_BUFFER_ADDR); + nuport_mac_writel(priv->rx_addr, RX_BUFFER_ADDR); wmb(); nuport_mac_writel(RX_DMA_ENABLE, RX_START_DMA); @@ -461,6 +461,8 @@ static irqreturn_t nuport_mac_tx_interrupt(int irq, void *dev_id) skb = priv->tx_skb[priv->dma_tx]; priv->tx_skb[priv->dma_tx] = NULL; priv->valid_txskb[priv->dma_tx] = 0; + dma_unmap_single(&priv->pdev->dev, priv->rx_addr, skb->len, + DMA_TO_DEVICE); dev_kfree_skb_irq(skb); priv->dma_tx++; @@ -554,6 +556,9 @@ static int nuport_mac_rx(struct net_device *dev, int limit) status = get_unaligned((u32 *) (skb->data + len)); skb->dev = dev; + dma_unmap_single(&priv->pdev->dev, priv->rx_addr, skb->len, + DMA_FROM_DEVICE); + /* packet filter failed */ if (!(status & (1 << 30))) { dev_kfree_skb_irq(skb); |