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net: stmmac: Add support for EST cycle-time-extension

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Add support for cycle-time-extension. TER GCL-register needs to be
updated with the cycle-time-extension. Width of TER register is EST
time interval width + 7 bits.

Signed-off-by: Rohan G Thomas <rohan.g.thomas@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20231201055252.1302-4-rohan.g.thomas@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Rohan G Thomas 2023-12-01 13:52:52 +08:00 committed by Jakub Kicinski
parent c3f3b97238
commit 9e95505fec
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
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@ -975,6 +975,8 @@ static int tc_setup_taprio(struct stmmac_priv *priv,
return -EINVAL;
if (!qopt->cycle_time)
return -ERANGE;
if (qopt->cycle_time_extension >= BIT(wid + 7))
return -ERANGE;
if (!plat->est) {
plat->est = devm_kzalloc(priv->device, sizeof(*plat->est),
@ -1041,6 +1043,8 @@ static int tc_setup_taprio(struct stmmac_priv *priv,
priv->plat->est->ctr[0] = do_div(ctr, NSEC_PER_SEC);
priv->plat->est->ctr[1] = (u32)ctr;
priv->plat->est->ter = qopt->cycle_time_extension;
if (fpe && !priv->dma_cap.fpesel) {
mutex_unlock(&priv->plat->est->lock);
return -EOPNOTSUPP;