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net/mlx5e: Add logic to read RS-FEC histogram bin ranges from PPHCR

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Introduce support for querying the Ports Phy Histogram Configuration
Register (PPHCR) to retrieve RS-FEC histogram bin ranges. The ranges
are stored in a static array and will be used to map histogram counters
to error levels.

The actual RS-FEC histogram statistics are not yet reported in this
commit and will be handled in a downstream patch.

Co-developed-by: Yael Chemla <ychemla@nvidia.com>
Signed-off-by: Yael Chemla <ychemla@nvidia.com>
Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Yael Chemla <ychemla@nvidia.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Link: https://patch.msgid.link/20250924124037.1508846-4-vadim.fedorenko@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Carolina Jubran 2025-09-24 12:40:35 +00:00 • committed by Jakub Kicinski
commit 44907e7c8f
5 changed files with 94 additions and 3 deletions
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