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Message-Id: <1351766464-27354-2-git-send-email-robherring2@gmail.com> Date: Thu, 1 Nov 2012 05:40:59 -0500 From: Rob Herring <robherring2@...il.com> To: netdev@...r.kernel.org, davem@...emloft.net Cc: eric.dumazet@...il.com, Rob Herring <rob.herring@...xeda.com> Subject: [PATCH v2 RESEND 1/6] net: calxedaxgmac: enable operate on 2nd frame mode From: Rob Herring <rob.herring@...xeda.com> Enable the tx dma to start reading the next frame while sending the current frame. Signed-off-by: Rob Herring <rob.herring@...xeda.com> --- drivers/net/ethernet/calxeda/xgmac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/calxeda/xgmac.c b/drivers/net/ethernet/calxeda/xgmac.c index 16814b3..7f5fd17 100644 --- a/drivers/net/ethernet/calxeda/xgmac.c +++ b/drivers/net/ethernet/calxeda/xgmac.c @@ -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 | -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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