diff options
| author | Rob Herring <rob.herring@calxeda.com> | 2012-09-10 12:39:41 -0500 |
|---|---|---|
| committer | John Rigby <john.rigby@linaro.org> | 2012-11-14 18:19:36 -0700 |
| commit | 4c2258192eb9a3863defccd013fc315a913d2a31 (patch) | |
| tree | 1d8a539209d682fc4c595df26221b1fda7475556 | |
| parent | 40fe9dba4c638934e9ff70dddd1f179f62905ba5 (diff) | |
UBUNTU: SAUCE: net: calxedaxgmac: enable operate on 2nd frame mode
BugLink: http://launchpad.net/bugs/1059432
Enable the tx dma to start reading the next frame while sending the current
frame.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
| -rw-r--r-- | drivers/net/ethernet/calxeda/xgmac.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/calxeda/xgmac.c b/drivers/net/ethernet/calxeda/xgmac.c index b0ae54242fe..f2f2d1e5217 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 | |