ramips: raeth: add rx_dma array to store the DMA address of the rx packets
authorGabor Juhos <juhosg@openwrt.org>
Sat, 11 Feb 2012 15:12:02 +0000 (15:12 +0000)
committerGabor Juhos <juhosg@openwrt.org>
Sat, 11 Feb 2012 15:12:02 +0000 (15:12 +0000)
SVN-Revision: 30445

target/linux/ramips/files/drivers/net/ramips.c
target/linux/ramips/files/drivers/net/ramips_eth.h

index 6066852..c9eecc2 100644 (file)
@@ -172,6 +172,7 @@ ramips_alloc_dma(struct raeth_priv *re)
 
        memset(re->rx, 0, sizeof(struct ramips_rx_dma) * NUM_RX_DESC);
        for (i = 0; i < NUM_RX_DESC; i++) {
+               dma_addr_t dma_addr;
                struct sk_buff *new_skb = dev_alloc_skb(MAX_RX_LENGTH +
                                                        NET_IP_ALIGN);
 
@@ -179,10 +180,11 @@ ramips_alloc_dma(struct raeth_priv *re)
                        goto err_cleanup;
 
                skb_reserve(new_skb, NET_IP_ALIGN);
-               re->rx[i].rxd1 = dma_map_single(NULL,
-                                               new_skb->data,
-                                               MAX_RX_LENGTH,
-                                               DMA_FROM_DEVICE);
+
+               dma_addr = dma_map_single(NULL, new_skb->data,
+                                         MAX_RX_LENGTH, DMA_FROM_DEVICE);
+               re->rx_dma[i] = dma_addr;
+               re->rx[i].rxd1 = (unsigned int) re->rx_dma[i];
                re->rx[i].rxd2 |= RX_DMA_LSO;
                re->rx_skb[i] = new_skb;
        }
@@ -282,8 +284,9 @@ ramips_eth_rx_hw(unsigned long ptr)
                new_skb = netdev_alloc_skb(dev, MAX_RX_LENGTH + NET_IP_ALIGN);
                /* Reuse the buffer on allocation failures */
                if (new_skb) {
-                       /* TODO: convert to use dma_addr_t */
-                       dma_unmap_single(NULL, priv->rx[rx].rxd1, MAX_RX_LENGTH,
+                       dma_addr_t dma_addr;
+
+                       dma_unmap_single(NULL, priv->rx_dma[rx], MAX_RX_LENGTH,
                                         DMA_FROM_DEVICE);
 
                        skb_put(rx_skb, pktlen);
@@ -296,10 +299,13 @@ ramips_eth_rx_hw(unsigned long ptr)
 
                        priv->rx_skb[rx] = new_skb;
                        skb_reserve(new_skb, NET_IP_ALIGN);
-                       priv->rx[rx].rxd1 = dma_map_single(NULL,
-                                                          new_skb->data,
-                                                          MAX_RX_LENGTH,
-                                                          DMA_FROM_DEVICE);
+
+                       dma_addr = dma_map_single(NULL,
+                                                 new_skb->data,
+                                                 MAX_RX_LENGTH,
+                                                 DMA_FROM_DEVICE);
+                       priv->rx_dma[rx] = dma_addr;
+                       priv->rx[rx].rxd1 = (unsigned int) dma_addr;
                } else {
                        dev->stats.rx_dropped++;
                }
index a69754b..7d5296b 100644 (file)
@@ -219,6 +219,7 @@ struct raeth_priv
        struct tasklet_struct   rx_tasklet;
        struct ramips_rx_dma    *rx;
        struct sk_buff          *rx_skb[NUM_RX_DESC];
+       dma_addr_t              rx_dma[NUM_RX_DESC];
 
        dma_addr_t              tx_desc_dma;
        struct tasklet_struct   tx_housekeeping_tasklet;