net: ll_temac: Fix support for 64-bit platforms

[linux-2.6-block.git] / drivers / net / ethernet / xilinx / ll_temac_main.c

diff --git a/drivers/net/ethernet/xilinx/ll_temac_main.c b/drivers/net/ethernet/xilinx/ll_temac_main.c
index fddd1b3ac1943f187453cc34d29da7852f1f381d..bcafb8925f75de53a2669d800d64a666057026e9 100644 (file)
--- a/drivers/net/ethernet/xilinx/ll_temac_main.c
+++ b/drivers/net/ethernet/xilinx/ll_temac_main.c
@@ -619,11 +619,39 @@ static void temac_adjust_link(struct net_device *ndev)
        mutex_unlock(&lp->indirect_mutex);
 }
 
+#ifdef CONFIG_64BIT
+
+void ptr_to_txbd(void *p, struct cdmac_bd *bd)
+{
+       bd->app3 = (u32)(((u64)p) >> 32);
+       bd->app4 = (u32)((u64)p & 0xFFFFFFFF);
+}
+
+void *ptr_from_txbd(struct cdmac_bd *bd)
+{
+       return (void *)(((u64)(bd->app3) << 32) | bd->app4);
+}
+
+#else
+
+void ptr_to_txbd(void *p, struct cmdac_bd *bd)
+{
+       bd->app4 = (u32)p;
+}
+
+void *ptr_from_txbd(struct cdmac_bd *bd)
+{
+       return (void *)(bd->app4);
+}
+
+#endif
+
 static void temac_start_xmit_done(struct net_device *ndev)
 {
        struct temac_local *lp = netdev_priv(ndev);
        struct cdmac_bd *cur_p;
        unsigned int stat = 0;
+       struct sk_buff *skb;
 
        cur_p = &lp->tx_bd_v[lp->tx_bd_ci];
        stat = cur_p->app0;
@@ -631,8 +659,9 @@ static void temac_start_xmit_done(struct net_device *ndev)
        while (stat & STS_CTRL_APP0_CMPLT) {
                dma_unmap_single(ndev->dev.parent, cur_p->phys, cur_p->len,
                                 DMA_TO_DEVICE);
-               if (cur_p->app4)
-                       dev_consume_skb_irq((struct sk_buff *)cur_p->app4);
+               skb = (struct sk_buff *)ptr_from_txbd(cur_p);
+               if (skb)
+                       dev_consume_skb_irq(skb);
                cur_p->app0 = 0;
                cur_p->app1 = 0;
                cur_p->app2 = 0;
@@ -711,7 +740,7 @@ temac_start_xmit(struct sk_buff *skb, struct net_device *ndev)
        cur_p->len = skb_headlen(skb);
        cur_p->phys = dma_map_single(ndev->dev.parent, skb->data,
                                     skb_headlen(skb), DMA_TO_DEVICE);
-       cur_p->app4 = (unsigned long)skb;
+       ptr_to_txbd((void *)skb, cur_p);
 
        for (ii = 0; ii < num_frag; ii++) {
                lp->tx_bd_tail++;