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Commit 0aefa8ec authored by Rob Herring's avatar Rob Herring Committed by David S. Miller
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net: calxedaxgmac: enable operate on 2nd frame mode 



Enable the tx dma to start reading the next frame while sending the current
frame.

Signed-off-by: default avatarRob Herring <rob.herring@calxeda.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 196d97f6

drivers/net/ethernet/calxeda/xgmac.c

+2 −2
Original line number Diff line number Diff line
@@ -191,6 +191,7 @@ 
#define DMA_CONTROL_ST		0x00002000	/* Start/Stop Transmission */

#define DMA_CONTROL_SR		0x00000002	/* Start/Stop Receive */

#define DMA_CONTROL_DFF		0x01000000	/* Disable flush of rx frames */

#define DMA_CONTROL_OSF		0x00000004	/* Operate on 2nd tx frame */



/* DMA Normal interrupt */

#define DMA_INTR_ENA_NIE	0x00010000	/* Normal Summary */
@@ -965,8 +966,7 @@ static int xgmac_hw_init(struct net_device *dev) 
		ctrl |= XGMAC_CONTROL_IPC;

	writel(ctrl, ioaddr + XGMAC_CONTROL);



	value = DMA_CONTROL_DFF;

	writel(value, ioaddr + XGMAC_DMA_CONTROL);

	writel(DMA_CONTROL_DFF | DMA_CONTROL_OSF, ioaddr + XGMAC_DMA_CONTROL);



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

	writel(XGMAC_OMR_TSF | XGMAC_OMR_RFD | XGMAC_OMR_RFA |