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| author |   Vladimir Oltean <vladimir.oltean@nxp.com> | 2020-07-13 19:57:05 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-07-13 17:40:01 -0700 |
| commit | e8e6e73db14273464b374d49ca7242c0994945f3 (patch) | |
| tree | 49f1fa188a17e176e64ccf52f33a6e137dce5dc7 /drivers/net/ethernet | |
| parent | net: dsa: felix: create a template for the DSA tags on xmit (diff) | |
| download | linux-dev-e8e6e73db14273464b374d49ca7242c0994945f3.tar.xz linux-dev-e8e6e73db14273464b374d49ca7242c0994945f3.zip | |
net: mscc: ocelot: split writes to pause frame enable bit and to thresholds
We don't want ocelot_port_set_maxlen to enable pause frame TX, just to
adjust the pause thresholds.
Move the unconditional enabling of pause TX to ocelot_init_port. There
is no good place to put such setting because it shouldn't be
unconditional. But at the moment it is, we're not changing that.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/mscc/ocelot.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c index 36986fccedf4..aca805b9c0b3 100644 --- a/drivers/net/ethernet/mscc/ocelot.c +++ b/drivers/net/ethernet/mscc/ocelot.c @@ -1259,6 +1259,7 @@ void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu) { struct ocelot_port *ocelot_port = ocelot->ports[port]; int maxlen = sdu + ETH_HLEN + ETH_FCS_LEN; + int pause_start, pause_stop; int atop_wm; if (port == ocelot->npi) { @@ -1272,13 +1273,13 @@ void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu) ocelot_port_writel(ocelot_port, maxlen, DEV_MAC_MAXLEN_CFG); - /* Set Pause WM hysteresis - * 152 = 6 * maxlen / OCELOT_BUFFER_CELL_SZ - * 101 = 4 * maxlen / OCELOT_BUFFER_CELL_SZ - */ - ocelot_write_rix(ocelot, SYS_PAUSE_CFG_PAUSE_ENA | - SYS_PAUSE_CFG_PAUSE_STOP(101) | - SYS_PAUSE_CFG_PAUSE_START(152), SYS_PAUSE_CFG, port); + /* Set Pause watermark hysteresis */ + pause_start = 6 * maxlen / OCELOT_BUFFER_CELL_SZ; + pause_stop = 4 * maxlen / OCELOT_BUFFER_CELL_SZ; + ocelot_rmw_rix(ocelot, SYS_PAUSE_CFG_PAUSE_START(pause_start), + SYS_PAUSE_CFG_PAUSE_START_M, SYS_PAUSE_CFG, port); + ocelot_rmw_rix(ocelot, SYS_PAUSE_CFG_PAUSE_STOP(pause_stop), + SYS_PAUSE_CFG_PAUSE_STOP_M, SYS_PAUSE_CFG, port); /* Tail dropping watermark */ atop_wm = (ocelot->shared_queue_sz - 9 * maxlen) / @@ -1341,6 +1342,10 @@ void ocelot_init_port(struct ocelot *ocelot, int port) ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_HIGH_CFG); ocelot_port_writel(ocelot_port, 0, DEV_MAC_FC_MAC_LOW_CFG); + /* Enable transmission of pause frames */ + ocelot_rmw_rix(ocelot, SYS_PAUSE_CFG_PAUSE_ENA, SYS_PAUSE_CFG_PAUSE_ENA, + SYS_PAUSE_CFG, port); + /* Drop frames with multicast source address */ ocelot_rmw_gix(ocelot, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA, ANA_PORT_DROP_CFG_DROP_MC_SMAC_ENA, |