[PATCH 0/2][SRU][OEM-5.13][I] iwlwifi: support LARI_CONFIG_CHANGE cmd

You-Sheng Yang vicamo.yang at canonical.com
Fri Aug 27 09:30:45 UTC 2021

BugLink: https://bugs.launchpad.net/bugs/1941665


After applied patches from bug 1933938 to enable AX201 on ADL platforms,
some of them may still fail to functioning stably due to fw error when
LARI_CONFIG_CHANGE command is sent. With CONFIG_IWLWIFI_DEBUG turned on,
following error appears:

  iwlwifi 0000:00:14.3: iwl_mvm_lari_cfg sending LARI_CONFIG_CHANGE,
config_bitmap=0x8, oem_11ax_allow_bitmap=0xf
  iwlwifi 0000:00:14.3: iwl_trans_txq_send_hcmd_sync Attempting to send
sync command UNKNOWN
  iwlwifi 0000:00:14.3: iwl_trans_txq_send_hcmd_sync Setting HCMD_ACTIVE
for command UNKNOWN

Then begin FW error, hardware reset.


Commit 54b4fda5a761 ("iwlwifi: mvm: Read acpi dsm to get unii4
enable/disable bitmap") is required to fix this issue. The other commit
is pulled in for dependency.

[Test Case]

Install a prebuilt kernel with these fixes, put DUT under idle for 5
mins and check if there is still firmware error messages.

[Where problems could occur]

There is little chance that it can ever go wrong judging from the
simplexity of the two commits.

[Other Info]

While the two patches have already been included in mainline and
therefore Ubuntu unstable, only oem-5.13 and impish are nominated.

Abhishek Naik (1):
  iwlwifi: mvm: Read acpi dsm to get unii4 enable/disable bitmap.

Miri Korenblit (1):
  iwlwifi: mvm: support BIOS enable/disable for 11ax in Russia

 drivers/net/wireless/intel/iwlwifi/fw/acpi.c  | 50 ++++++++++++++-----
 drivers/net/wireless/intel/iwlwifi/fw/acpi.h  | 10 ++++
 .../wireless/intel/iwlwifi/fw/api/nvm-reg.h   | 19 +++++++
 drivers/net/wireless/intel/iwlwifi/mvm/fw.c   | 44 +++++++++++-----
 4 files changed, 99 insertions(+), 24 deletions(-)


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