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path: root/drivers/net/sky2.c
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Diffstat (limited to 'drivers/net/sky2.c')
-rw-r--r--drivers/net/sky2.c18
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index aff347f1ea4b..2253140ff4dc 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -723,11 +723,17 @@ static inline struct sky2_rx_le *sky2_next_rx(struct sky2_port *sky2)
723 return le; 723 return le;
724} 724}
725 725
726/* Return high part of DMA address (could be 32 or 64 bit) */
727static inline u32 high32(dma_addr_t a)
728{
729 return (a >> 16) >> 16;
730}
731
726/* Build description to hardware about buffer */ 732/* Build description to hardware about buffer */
727static inline void sky2_rx_add(struct sky2_port *sky2, struct ring_info *re) 733static inline void sky2_rx_add(struct sky2_port *sky2, struct ring_info *re)
728{ 734{
729 struct sky2_rx_le *le; 735 struct sky2_rx_le *le;
730 u32 hi = (re->mapaddr >> 16) >> 16; 736 u32 hi = high32(re->mapaddr);
731 737
732 re->idx = sky2->rx_put; 738 re->idx = sky2->rx_put;
733 if (sky2->rx_addr64 != hi) { 739 if (sky2->rx_addr64 != hi) {
@@ -735,7 +741,7 @@ static inline void sky2_rx_add(struct sky2_port *sky2, struct ring_info *re)
735 le->addr = cpu_to_le32(hi); 741 le->addr = cpu_to_le32(hi);
736 le->ctrl = 0; 742 le->ctrl = 0;
737 le->opcode = OP_ADDR64 | HW_OWNER; 743 le->opcode = OP_ADDR64 | HW_OWNER;
738 sky2->rx_addr64 = hi; 744 sky2->rx_addr64 = high32(re->mapaddr + re->maplen);
739 } 745 }
740 746
741 le = sky2_next_rx(sky2); 747 le = sky2_next_rx(sky2);
@@ -1100,17 +1106,17 @@ static int sky2_xmit_frame(struct sk_buff *skb, struct net_device *dev)
1100 1106
1101 len = skb_headlen(skb); 1107 len = skb_headlen(skb);
1102 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE); 1108 mapping = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
1103 addr64 = (mapping >> 16) >> 16; 1109 addr64 = high32(mapping);
1104 1110
1105 re = sky2->tx_ring + sky2->tx_prod; 1111 re = sky2->tx_ring + sky2->tx_prod;
1106 1112
1107 /* Send high bits if changed */ 1113 /* Send high bits if changed or crosses boundary */
1108 if (addr64 != sky2->tx_addr64) { 1114 if (addr64 != sky2->tx_addr64 || high32(mapping + len) != sky2->tx_addr64) {
1109 le = get_tx_le(sky2); 1115 le = get_tx_le(sky2);
1110 le->tx.addr = cpu_to_le32(addr64); 1116 le->tx.addr = cpu_to_le32(addr64);
1111 le->ctrl = 0; 1117 le->ctrl = 0;
1112 le->opcode = OP_ADDR64 | HW_OWNER; 1118 le->opcode = OP_ADDR64 | HW_OWNER;
1113 sky2->tx_addr64 = addr64; 1119 sky2->tx_addr64 = high32(mapping + len);
1114 } 1120 }
1115 1121
1116 /* Check for TCP Segmentation Offload */ 1122 /* Check for TCP Segmentation Offload */