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.c | |
| 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.c')
| -rw-r--r-- | drivers/net/ethernet/ti/am65-cpsw-nuss.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c index 2e374745f239..41e0046a52d5 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -2194,6 +2194,8 @@ am65_cpsw_nuss_init_port_ndev(struct am65_cpsw_common *common, u32 port_idx) ndev_priv = netdev_priv(port->ndev); ndev_priv->port = port; ndev_priv->msg_enable = AM65_CPSW_DEBUG; + mutex_init(&ndev_priv->mm_lock); + port->qos.link_speed = SPEED_UNKNOWN; SET_NETDEV_DEV(port->ndev, dev); eth_hw_addr_set(port->ndev, port->slave.mac_addr); |