This bug is awaiting verification that the linux-oem-6.14/6.14.0-1015.15
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-noble-linux-oem-6.14' to 'verification-done-
noble-linux-oem-6.14'. If the problem still exists, change the tag
'verification-needed-noble-linux-oem-6.14' to 'verification-failed-
noble-linux-oem-6.14'.


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!


** Tags added: kernel-spammed-noble-linux-oem-6.14-v2 
verification-needed-noble-linux-oem-6.14

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https://bugs.launchpad.net/bugs/2125022

Title:
  Enable PMF on AMD HPT/STX/KRK

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  In Progress
Status in linux-firmware package in Ubuntu:
  Fix Released
Status in linux-oem-6.14 package in Ubuntu:
  Invalid
Status in linux-oem-6.17 package in Ubuntu:
  Invalid
Status in linux source package in Noble:
  Won't Fix
Status in linux-firmware source package in Noble:
  Invalid
Status in linux-oem-6.14 source package in Noble:
  Fix Committed
Status in linux-oem-6.17 source package in Noble:
  In Progress
Status in linux source package in Plucky:
  In Progress
Status in linux-firmware source package in Plucky:
  Invalid
Status in linux-oem-6.14 source package in Plucky:
  Invalid
Status in linux-oem-6.17 source package in Plucky:
  Invalid
Status in linux source package in Questing:
  In Progress
Status in linux-firmware source package in Questing:
  Fix Released
Status in linux-oem-6.14 source package in Questing:
  Invalid
Status in linux-oem-6.17 source package in Questing:
  Invalid

Bug description:
  [Impact]
  It is for basic AMD HPT/STX/KRK function. Current PMF driver missing two 
features:
  1. For the thermal policy input, the AMD Fusion Sensor Hub could not pass the 
data to PMF driver.
  2. PMF driver could not parse the thermal policy binary which is stored in 
the BIOS.

  [Fix]
  Need this series of patches which is included in linux-next
  
https://lore.kernel.org/platform-driver-x86/[email protected]/T/#t

  2ab7713d6e94 platform/x86/amd/pmf: Add debug logs for pending requests and 
custom BIOS inputs
  62214d942d2b platform/x86/amd/pmf: Call enact function sooner to process 
early pending requests
  b21ec88340b7 platform/x86/amd/pmf: Preserve custom BIOS inputs for evaluating 
the policies
  04199ef48ac2 platform/x86/amd/pmf: Add custom BIOS input support for 
AMD_CPU_ID_PS
  4389d38080d7 platform/x86/amd/pmf: Add helper to verify BIOS input 
notifications are enable/disable
  37336ecb06a8 platform/x86/amd/pmf: Update ta_pmf_action structure member
  ebc68a3451ce platform/x86/amd/pmf: Extend custom BIOS inputs for more policies
  d82e3d2dd0ba platform/x86/amd/pmf: Fix the custom bios input handling 
mechanism
  f10ea2df9e4d platform/x86/amd/pmf: Add support for adjusting PMF PPT and PPT 
APU thresholds

  [Test]
  PMF driver is loaded and function works properly on AMD platforms.

  [Where problems could occur]
  It's hard to evaluate the problems those patches may occur. Most of them are 
withing amd/pmf, so it only impact the amd pmf functionailties.

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