octeontx2-af: Unlock contexts in the queue context cache in case of fault detection

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[ Upstream commit ea9dd2e5c6 ]

NDC caches contexts of frequently used queue's (Rx and Tx queues)
contexts. Due to a HW errata when NDC detects fault/poision while
accessing contexts it could go into an illegal state where a cache
line could get locked forever. To makesure all cache lines in NDC
are available for optimum performance upon fault/lockerror/posion
errors scan through all cache lines in NDC and clear the lock bit.

Fixes: 4a3581cd59 ("octeontx2-af: NPA AQ instruction enqueue support")
Signed-off-by: Suman Ghosh <sumang@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Sai Krishna <saikrishnag@marvell.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Suman Ghosh 2023-03-07 16:19:08 +05:30 • committed by Greg Kroah-Hartman

parent ed8dbecba5

commit ac8efb558c

5 changed files with 82 additions and 7 deletions

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5

drivers/net/ethernet/marvell/octeontx2/af/rvu.h

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7

drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c

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drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c

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drivers/net/ethernet/marvell/octeontx2/af/rvu_npa.c

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3

drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h

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