diff options
| author |   Rob Herring <rob.herring@calxeda.com> | 2012-11-05 06:22:19 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-11-07 03:51:13 -0500 |
| commit | 0aefa8ecd81f4f4b3f7f336aa152b13cc79c4bfe (patch) | |
| tree | bedbb28a13c7db4c483aa04356313da6335460cd | |
| parent | htb: fix two bugs (diff) | |
| download | linux-dev-0aefa8ecd81f4f4b3f7f336aa152b13cc79c4bfe.tar.xz linux-dev-0aefa8ecd81f4f4b3f7f336aa152b13cc79c4bfe.zip | |
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: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -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 16814b34d4b6..7f5fd17c8002 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 | |