mlxbf-pmc support for BlueField-3

[Shravan Kumar Ramani]

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.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-bluefield/5.4.0-1057.63 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-bluefield - 5.4.0-1058.64

---------------
linux-bluefield (5.4.0-1058.64) focal; urgency=medium

  * focal/linux-bluefield: 5.4.0-1058.64 -proposed tracker (LP: #2006592)

  * nft_lookup crash when running DDOS attack (LP: #2006397)
    - netfilter: nf_tables: constify nft_reg_load{8, 16, 64}()
    - netfilter: nft_set_bitmap: initialize set element extension in lookups
    - netfilter: nf_tables: do not update stateful expressions if lookup is
      inverted

linux-bluefield (5.4.0-1057.63) focal; urgency=medium

  * focal/linux-bluefield: 5.4.0-1057.63 -proposed tracker (LP: #2003464)

  * Focal update: v5.4.221 upstream stable release (LP: #1997993)
    - [Config] bluefield: Enable ARM64_ERRATUM_1742098 config on arm64

  * mlxbf-pmc counters not functional for llt_miss block (LP: #2004235)
    - SAUCE: mlxbf-pmc: Bug fix for BlueField-3 counter offsets

  * Add support for CT accounting stats (LP: #1998938)
    - netfilter: conntrack: export nf_ct_acct_update()
    - netfilter: flowtable: add counter support
    - net/sched: act_ct: update nf_conn_acct for act_ct SW offload in flowtable
    - net/sched: act_ct: enable stats for HW offloaded entries

  * allow per-net notifier to follow netdev into namespace (LP: #2002361)
    - net: push loops and nb calls into helper functions
    - net: introduce per-netns netdevice notifiers
    - net: push code from net notifier reg/unreg into helpers
    - net: introduce dev_net notifier register/unregister variants

  * mlxbf-pmc support for BlueField-3 (LP: #2002501)
    - SAUCE: mlxbf-pmc: Support for BlueField-3 performance counters

  * Kernel crash due to Bluefield pka TRNG ioctl call (LP: #2001564)
    - SAUCE: mlxbf-pka: Fix kernel crash with pka TRNG ioctl call

  * mlxbf-pmc: Fix event string typo (LP: #1998863)
    - SAUCE: mlxbf-pmc: Fix event string typo

  [ Ubuntu: 5.4.0-139.156 ]

  * focal/linux: 5.4.0-139.156 -proposed tracker (LP: #2003486)
  * Revoke & rotate to new signing key (LP: #2002812)
    - [Packaging] Revoke and rotate to new signing key

  [ Ubuntu: 5.4.0-138.155 ]

  * focal/linux: 5.4.0-138.155 -proposed tracker (LP: #2001845)
  * Packaging resync (LP: #1786013)
    - [Packaging] update helper scripts
  * Focal update: v5.4.224 upstream stable release (LP: #1999273)
    - RDMA/cma: Use output interface for net_dev check
    - IB/hfi1: Correctly move list in sc_disable()
    - NFSv4.1: Handle RECLAIM_COMPLETE trunking errors
    - NFSv4.1: We must always send RECLAIM_COMPLETE after a reboot
    - nfs4: Fix kmemleak when allocate slot failed
    - net: dsa: Fix possible memory leaks in dsa_loop_init()
    - RDMA/core: Fix null-ptr-deref in ib_core_cleanup()
    - RDMA/qedr: clean up work queue on failure in qedr_alloc_resources()
    - nfc: s3fwrn5: Fix potential memory leak in s3fwrn5_nci_send()
    - nfc: nfcmrvl: Fix potential memory leak in nfcmrvl_i2c_nci_send()
    - net: fec: fix improper use of NETDEV_TX_BUSY
    - ata: pata_legacy: fix pdc20230_set_piomode()
    - net: sched: Fix use after free in red_enqueue()
    - net: tun: fix bugs for oversize packet when napi frags enabled
    - netfilter: nf_tables: release flow ru...