diff options
| author | Srinivas Kandagatla <srinivas.kandagatla@st.com> | 2011-07-17 22:54:09 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-07-18 19:47:24 +0200 |
| commit | 61b8013a114cb041db2c56f747953cac69637f26 (patch) | |
| tree | adc39f580015301e9be3e74bef360de8145512fd /drivers/net/stmmac | |
| parent | stmmac: add memory barriers at appropriate places (diff) | |
| download | linux-61b8013a114cb041db2c56f747953cac69637f26.tar.xz linux-61b8013a114cb041db2c56f747953cac69637f26.zip | |
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>
Diffstat (limited to 'drivers/net/stmmac')
| -rw-r--r-- | drivers/net/stmmac/stmmac_main.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c index c8c9e5bc6608..d37ebc80623a 100644 --- a/drivers/net/stmmac/stmmac_main.c +++ b/drivers/net/stmmac/stmmac_main.c @@ -557,9 +557,11 @@ static void free_dma_desc_resources(struct stmmac_priv *priv) */ static void stmmac_dma_operation_mode(struct stmmac_priv *priv) { - if (likely((priv->plat->tx_coe) && (!priv->no_csum_insertion))) { - /* In case of GMAC, SF mode has to be enabled - * to perform the TX COE. This depends on: + if (likely(priv->plat->force_sf_dma_mode || + ((priv->plat->tx_coe) && (!priv->no_csum_insertion)))) { + /* + * In case of GMAC, SF mode can be enabled + * to perform the TX COE in HW. This depends on: * 1) TX COE if actually supported * 2) There is no bugged Jumbo frame support * that needs to not insert csum in the TDES. |