diff options
| author | Roger Quadros <rogerq@kernel.org> | 2023-12-19 12:58:04 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-12-23 01:01:19 +0000 |
| commit | 49a2eb90682469a7b171be79b2939e26091ce221 (patch) | |
| tree | 5189e1cd153894cddf3ffed92cde26d288f1aef8 /drivers/net/ethernet/ti/Kconfig | |
| parent | bc8d62e16ec2f721f4edea12f2bbcf21405f43fa (diff) | |
net: ethernet: ti: am65-cpsw-qos: Add Frame Preemption MAC Merge support
Add driver support for viewing / changing the MAC Merge sublayer
parameters and seeing the verification state machine's current state
via ethtool.
As hardware does not support interrupt notification for verification
events we resort to polling on link up. On link up we try a couple of
times for verification success and if unsuccessful then give up.
The Frame Preemption feature is described in the Technical Reference
Manual [1] in section:
12.3.1.4.6.7 Intersperced Express Traffic (IET – P802.3br/D2.0)
Due to Silicon Errata i2208 [2] we set limit min IET fragment size to
124 (excluding 4 bytes mCRC).
[1] AM62x TRM - https://www.ti.com/lit/ug/spruiv7a/spruiv7a.pdf
[2] AM62x Silicon Errata - https://www.ti.com/lit/er/sprz487c/sprz487c.pdf
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/ti/Kconfig')
| -rw-r--r-- | drivers/net/ethernet/ti/Kconfig | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/ti/Kconfig b/drivers/net/ethernet/ti/Kconfig index f76532443298..be01450c20dc 100644 --- a/drivers/net/ethernet/ti/Kconfig +++ b/drivers/net/ethernet/ti/Kconfig @@ -139,8 +139,9 @@ config TI_AM65_CPSW_QOS depends on TI_K3_AM65_CPSW_NUSS && NET_SCH_TAPRIO && TI_K3_AM65_CPTS help This option enables QoS offload features in AM65 CPSW like - Time Aware Shaper (TAS) / Enhanced Scheduled Traffic (EST) - and MQPRIO qdisc offload. + Time Aware Shaper (TAS) / Enhanced Scheduled Traffic (EST), + MQPRIO qdisc offload and Frame-Preemption MAC Merge / Interspersing + Express Traffic (IET). The EST scheduler runs on CPTS and the TAS/EST schedule is updated in the Fetch RAM memory of the CPSW. |