** Also affects: linux-bluefield (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: linux-bluefield (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: linux-bluefield (Ubuntu Focal)
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/2002501
Title:
mlxbf-pmc support for BlueField-3
Status in linux-bluefield package in Ubuntu:
New
Status in linux-bluefield source package in Focal:
Fix Committed
Status in linux-bluefield source package in Jammy:
New
Bug description:
SRU Justification:
[Impact]
Currently, the mlxbf-pmc driver supports only BlueField-1 and BlueField-2
devices. BlueField-3 is not supported.
[Fix]
Add support for BlueField-3 devices by adding new access mechanism for
programming and reading counter values as in the new design, along with the
list of supported events in each HW block in BlueField-3.
[Test Case]
Previously, the driver would not be loaded when the OS is loaded on a
BlueField-3 card. With the fix, the driver should get loaded and create sysfs
entries as a hwmon device under /sys/class/hwmon/hwmon0.
[Regression Potential]
The ACPI table needs to be in sync with this change since it depends on newly
introduces parameters such as mss_enable and llt_enable, which were not present
earlier.
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