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jeevantelukula merged 1 commit into from
Aug 1, 2025
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fix(_K3-CPSW-common): Update ethtool register-dump documentation #416

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86 changes: 73 additions & 13 deletions ...linux/Foundational_Components/Kernel/Kernel_Drivers/Network/_K3-CPSW-common.rst
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Expand Up @@ -506,21 +506,81 @@ The TI switch-config tool can be used for CPSW NUSS register dump parsing.
| reg_value (u32) | MMIO region dump length, including header |
+--------------------+---------------------------------------------+

Exception: ALE table dumped as raw array of ALE records (3 * u32 per record).
.. ifconfig:: CONFIG_part_variant in ('AM62X','AM62PX','AM64X')

Exception: ALE table dumped as raw array of ALE records (3 * u32 per record).

.. code-block:: console

# ethtool -d eth0
Offset Values
------ ------
0x0000: 01 00 00 00 48 00 00 00 00 00 00 00 00 71 a0 6b
0x0010: 04 00 00 00 00 00 00 00 08 00 00 00 00 00 00 00
0x0020: 0c 00 00 00 00 00 00 00 10 00 00 00 01 00 00 00
0x0030: 14 00 00 00 00 00 00 00 18 00 00 00 00 00 00 00
0x0040: 1c 00 00 00 00 00 00 00 02 00 00 00 48 00 00 00
0x0050: 30 00 00 00 0b 00 00 00 34 00 00 00 00 00 00 00
0x0060: 38 00 00 00 00 00 00 00 3c 00 00 00 00 00 00 00
...

.. code-block:: console
.. ifconfig:: CONFIG_part_variant not in ('AM62X','AM62PX','AM64X')

.. code-block:: console

# ethtool --register-dump eth0
K3 CPSW dump version: 1, len: 6328
(Missing registers in memory space can be considered as zero valued)
--------------------------------------------------------------------
cpsw-nuss regdump: number of Registers:(16)
00000000:reg(6BA02102)
00000010:reg(00000001)
cpsw-nuss-rgmii-status regdump: number of Registers:(16)
00000030:reg(0000000D)
cpsw-nuss-mdio regdump: number of Registers:(128)
00000f00:reg(00070907)
00000f04:reg(8100014C)
00000f08:reg(00000001)
00000f0c:reg(00000001)
00000f10:reg(00000003)
00000f30:reg(00000001)
00000f34:reg(80000000)
00000f38:reg(FFFFFFFF)
cpsw-nu regdump: number of Registers:(144)
00020000:reg(6BA82102)
00020004:reg(00006006)
...

# ethtool -d eth0
Offset Values
------ ------
0x0000: 01 00 00 00 48 00 00 00 00 00 00 00 00 71 a0 6b
0x0010: 04 00 00 00 00 00 00 00 08 00 00 00 00 00 00 00
0x0020: 0c 00 00 00 00 00 00 00 10 00 00 00 01 00 00 00
0x0030: 14 00 00 00 00 00 00 00 18 00 00 00 00 00 00 00
0x0040: 1c 00 00 00 00 00 00 00 02 00 00 00 48 00 00 00
0x0050: 30 00 00 00 0b 00 00 00 34 00 00 00 00 00 00 00
0x0060: 38 00 00 00 00 00 00 00 3c 00 00 00 00 00 00 00
...
ALE-table will also get dumped after all register dumps.
Example of ALE-dump:

.. code-block:: console

Number of ALE entries: 64
0: Type: Inner VLAN
Nolearn Mask = 0x0, Ingress Check = 0
VLAN ID = 0, No Frag = 0, Registered Mask = 0x0
Force Untagged Packet Egress = 0x3, Unregistered Mask = 0x1, Limit Next Header Control = 0, Members = 0x3
1: Type: Unicast
Updated Address = f4:84:4c:fb:3e:9a, Unicast Type = Persistent, Port_num = 0x0, Secure: 1, Blocked: 0, Touch = 0, Agable = 0
2: Type: Multicast
VID = 0, Address = ff:ff:ff:ff:ff:ff, Multicast_state = Forwarding, No Super, port_mask = 0x3
3: Type: Multicast
Address = 01:00:5e:00:00:01, Multicast_State = Forwarding, No Super, port_mask = 0x3
4: Type: Multicast
Address = 33:33:00:00:00:01, Multicast_State = Forwarding, No Super, port_mask = 0x3
5: Type: Multicast
Address = 33:33:ff:fb:3e:9a, Multicast_State = Forwarding, No Super, port_mask = 0x3
6: Type: Multicast
Address = 33:33:00:00:00:fb, Multicast_State = Forwarding, No Super, port_mask = 0x3
7: Type: Multicast
Address = 01:00:5e:00:00:fb, Multicast_State = Forwarding, No Super, port_mask = 0x3
8: Type: Multicast
Address = 01:80:c2:00:00:00, Multicast_State = Forwarding, No Super, port_mask = 0x3
9: Type: Multicast
Address = 01:80:c2:00:00:03, Multicast_State = Forwarding, No Super, port_mask = 0x3
10: Type: Multicast
Address = 01:80:c2:00:00:0e, Multicast_State = Forwarding, No Super, port_mask = 0x3

################
Interrupt pacing
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