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authorRob Herring <rob.herring@calxeda.com>2012-07-09 14:16:10 +0000
committerDavid S. Miller <davem@davemloft.net>2012-07-10 23:25:47 -0700
commitf62a23a7cb601fb30c4a8b8a5ba1c6bb7f5148b3 (patch)
tree97a29b2e30920f2ad3b3948a7af4e633de160195
parentnet: calxedaxgmac: set outstanding AXI bus transactions to 8 (diff)
downloadlinux-dev-f62a23a7cb601fb30c4a8b8a5ba1c6bb7f5148b3.tar.xz
linux-dev-f62a23a7cb601fb30c4a8b8a5ba1c6bb7f5148b3.zip
net: calxedaxgmac: enable rx cut-thru mode
Enabling RX cut-thru mode yields better performance as received frames start getting written to memory before a whole frame is received. Signed-off-by: Rob Herring <rob.herring@calxeda.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/calxeda/xgmac.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/calxeda/xgmac.c b/drivers/net/ethernet/calxeda/xgmac.c
index abb8f40ec221..2b4b4f529ab4 100644
--- a/drivers/net/ethernet/calxeda/xgmac.c
+++ b/drivers/net/ethernet/calxeda/xgmac.c
@@ -264,7 +264,7 @@
#define XGMAC_OMR_FEF 0x00000080 /* Forward Error Frames */
#define XGMAC_OMR_DT 0x00000040 /* Drop TCP/IP csum Errors */
#define XGMAC_OMR_RSF 0x00000020 /* RX FIFO Store and Forward */
-#define XGMAC_OMR_RTC 0x00000010 /* RX Threshhold Ctrl */
+#define XGMAC_OMR_RTC_256 0x00000018 /* RX Threshhold Ctrl */
#define XGMAC_OMR_RTC_MASK 0x00000018 /* RX Threshhold Ctrl MASK */
/* XGMAC HW Features Register */
@@ -982,7 +982,8 @@ static int xgmac_hw_init(struct net_device *dev)
writel(value, ioaddr + XGMAC_DMA_CONTROL);
/* Set the HW DMA mode and the COE */
- writel(XGMAC_OMR_TSF | XGMAC_OMR_RSF | XGMAC_OMR_RFD | XGMAC_OMR_RFA,
+ writel(XGMAC_OMR_TSF | XGMAC_OMR_RFD | XGMAC_OMR_RFA |
+ XGMAC_OMR_RTC_256,
ioaddr + XGMAC_OMR);
/* Reset the MMC counters */