stmmac: Allow SOCs to use Store forward mode eventhough tx_coe is 0. (V2)

This patch adds new field 'force_sf_dma_mode' to plat_stmmacenet_data
struct to allow users to specify if they want to use force store forward
eventhough tx_coe is not available in hw.
without this flag stmmac driver will use cut-thru mode not use
store-forward mode.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index 9529e49b0385..05d775690b72 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -40,6 +40,7 @@ struct plat_stmmacenet_data {
         int tx_coe;
         int bugged_jumbo;
         int pmt;
+        int force_sf_dma_mode;
         void (*fix_mac_speed)(void *priv, unsigned int speed);
         void (*bus_setup)(void __iomem *ioaddr);
         int (*init)(struct platform_device *pdev);