diff options
| author | Jose Abreu <Jose.Abreu@synopsys.com> | 2018-06-27 15:03:20 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-06-28 22:24:25 +0900 |
| commit | 4205c88eaf17b5f3ee30032d68df55cd5d9077a1 (patch) | |
| tree | 75a7ae1f806d7e25625405244f43a65dccc86a85 /drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h | |
| parent | 24ac3a08e65845a098140ff270229dec4a897404 (diff) | |
net: stmmac: Set DMA buffer size in HW
This is clearly a bug.
We need to set the DMA buffer size in the HW otherwise corruption can
occur when receiving packets.
This is probably not occuring because of small MTU values and because HW
has a default value internally (which currently is bigger than default
buffer size).
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Vitor Soares <soares@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h index c63c1fe3f26b..22a4a6dbb1a4 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h @@ -120,6 +120,8 @@ /* DMA Rx Channel X Control register defines */ #define DMA_CONTROL_SR BIT(0) +#define DMA_RBSZ_MASK GENMASK(14, 1) +#define DMA_RBSZ_SHIFT 1 /* Interrupt status per channel */ #define DMA_CHAN_STATUS_REB GENMASK(21, 19) |