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net: ethernet: ti: ale: add support for mac-only mode
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The new CPSW ALE version, available on TI K3 AM654/J721E SoCs family,
allows to switch any external port to MAC only mode. When MAC only mode
enabled this port be treated like a MAC port for the host. All traffic
received is only sent to the host. The host must direct traffic to this
port as the lookup engine will not send traffic to the ports with the
p0_maconly bit set and the p0_no_learn also set. If p0_maconly bit is set
and the p0_no_learn is not set, the host can send non-directed packets that
can be sent to the destination of a MacOnly port. It is also possible that
The host can broadcast to all ports including MacOnly ports in this mode.

This patch add ALE supprt for MAC only mode.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Murali Karicheri <m-karicheri2@ti.com>
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Grygorii Strashko authored and David S. Miller committed Mar 27, 2020
1 parent 9d1f644 commit 6c0b849
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Showing 2 changed files with 18 additions and 0 deletions.
16 changes: 16 additions & 0 deletions drivers/net/ethernet/ti/cpsw_ale.c
Original file line number Diff line number Diff line change
Expand Up @@ -779,6 +779,22 @@ static struct ale_control_info ale_controls[ALE_NUM_CONTROLS] = {
.port_shift = 0,
.bits = 1,
},
[ALE_PORT_MACONLY] = {
.name = "mac_only_port_mode",
.offset = ALE_PORTCTL,
.port_offset = 4,
.shift = 11,
.port_shift = 0,
.bits = 1,
},
[ALE_PORT_MACONLY_CAF] = {
.name = "mac_only_port_caf",
.offset = ALE_PORTCTL,
.port_offset = 4,
.shift = 13,
.port_shift = 0,
.bits = 1,
},
[ALE_PORT_MCAST_LIMIT] = {
.name = "mcast_limit",
.offset = ALE_PORTCTL,
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2 changes: 2 additions & 0 deletions drivers/net/ethernet/ti/cpsw_ale.h
Original file line number Diff line number Diff line change
Expand Up @@ -62,6 +62,8 @@ enum cpsw_ale_control {
ALE_PORT_UNKNOWN_MCAST_FLOOD,
ALE_PORT_UNKNOWN_REG_MCAST_FLOOD,
ALE_PORT_UNTAGGED_EGRESS,
ALE_PORT_MACONLY,
ALE_PORT_MACONLY_CAF,
ALE_PORT_BCAST_LIMIT,
ALE_PORT_MCAST_LIMIT,
ALE_NUM_CONTROLS,
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