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/am65-cpsw-nuss.h | |
| 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/am65-cpsw-nuss.h')
| -rw-r--r-- | drivers/net/ethernet/ti/am65-cpsw-nuss.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.h b/drivers/net/ethernet/ti/am65-cpsw-nuss.h index f3dad2ab9828..1e4a045057fc 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.h +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.h @@ -145,6 +145,7 @@ struct am65_cpsw_common { bool pf_p0_rx_ptype_rrobin; struct am65_cpts *cpts; int est_enabled; + bool iet_enabled; bool is_emac_mode; u16 br_members; @@ -170,6 +171,10 @@ struct am65_cpsw_ndev_priv { struct am65_cpsw_port *port; struct am65_cpsw_ndev_stats __percpu *stats; bool offload_fwd_mark; + /* Serialize access to MAC Merge state between ethtool requests + * and link state updates + */ + struct mutex mm_lock; }; #define am65_ndev_to_priv(ndev) \ |