net: amd-xgbe: Reset the PHY rx data path when mailbox command timeout

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Sometimes mailbox commands timeout when the RX data path becomes
unresponsive. This prevents the submission of new mailbox commands to DXIO.
This patch identifies the timeout and resets the RX data path so that the
next message can be submitted properly.

Fixes: 549b32af9f ("amd-xgbe: Simplify mailbox interface rate change code")
Co-developed-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Shyam Sundar S K 2021-02-17 00:37:07 +05:30 • committed by David S. Miller

parent 25c5a7e89b

commit 30b7edc82e

2 changed files with 41 additions and 1 deletions

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14

drivers/net/ethernet/amd/xgbe/xgbe-common.h

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28

drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c

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