net: ti: am65-cpsw-nuss: Add switchdev support

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J721e, J7200 and AM64 have multi port switches which can work in multi
mac mode and in switch mode. Add support for configuring this HW in
switch mode using devlink and switchdev notifiers.

Support is similar to existing CPSW switchdev implementation of TI's 32 bit
platform like AM33/AM43/AM57.

To enable switch mode:
devlink dev param set platform/8000000.ethernet name switch_mode value true cmode runtime

All configuration is implemented via switchdev API and notifiers.
Supported:
      - SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS
      - SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS
      - SWITCHDEV_ATTR_ID_PORT_STP_STATE
      - SWITCHDEV_OBJ_ID_PORT_VLAN
      - SWITCHDEV_OBJ_ID_PORT_MDB
      - SWITCHDEV_OBJ_ID_HOST_MDB

Hence AM65 CPSW switchdev driver supports:
     - FDB offloading
     - MDB offloading
     - VLAN filtering and offloading
     - STP

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Vignesh Raghavendra 2021-02-11 16:26:43 +05:30 • committed by David S. Miller

parent 2934db9bcb

commit 86e8b070b2

4 changed files with 587 additions and 1 deletions

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1

drivers/net/ethernet/ti/Makefile

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20

drivers/net/ethernet/ti/am65-cpsw-nuss.c

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533

drivers/net/ethernet/ti/am65-cpsw-switchdev.c

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34

drivers/net/ethernet/ti/am65-cpsw-switchdev.h

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