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Commit f62a23a7 authored by Rob Herring's avatar Rob Herring Committed by David S. Miller
Browse files

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: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e36ce6eb

drivers/net/ethernet/calxeda/xgmac.c

+3 −2
Original line number Original line Diff line number Diff line
@@ -264,7 +264,7 @@ 
#define XGMAC_OMR_FEF		0x00000080	/* Forward Error Frames */

#define XGMAC_OMR_FEF		0x00000080	/* Forward Error Frames */

#define XGMAC_OMR_DT		0x00000040	/* Drop TCP/IP csum Errors */

#define XGMAC_OMR_DT		0x00000040	/* Drop TCP/IP csum Errors */

#define XGMAC_OMR_RSF		0x00000020	/* RX FIFO Store and Forward */

#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 */

#define XGMAC_OMR_RTC_MASK	0x00000018	/* RX Threshhold Ctrl MASK */





/* XGMAC HW Features Register */

/* XGMAC HW Features Register */
@@ -982,7 +982,8 @@ static int xgmac_hw_init(struct net_device *dev) 
	writel(value, ioaddr + XGMAC_DMA_CONTROL);

	writel(value, ioaddr + XGMAC_DMA_CONTROL);





	/* Set the HW DMA mode and the COE */

	/* 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);

		ioaddr + XGMAC_OMR);





	/* Reset the MMC counters */

	/* Reset the MMC counters */