linux-kernel - Re: [PATCH v16 0/9] Enable Wifi RFI interference mitigation feature support

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Message-ID: <08f25cb0-793c-441c-b033-0de8104629c9@amd.com>
Date:   Mon, 11 Dec 2023 18:08:24 +0800
From:   "Ma, Jun" <majun@....com>
To:     Ma Jun <Jun.Ma2@....com>, amd-gfx@...ts.freedesktop.org,
        lenb@...nel.org, hdegoede@...hat.com, johannes@...solutions.net,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, alexander.deucher@....com, Lijo.Lazar@....com,
        mario.limonciello@....com, netdev@...r.kernel.org,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, platform-driver-x86@...r.kernel.org
Cc:     majun@....com
Subject: Re: [PATCH v16 0/9] Enable Wifi RFI interference mitigation feature
 support

Hi all,

Compared with the previous version(v15), only patch 1 was modified to fix compilation errors,
and other patches remained the same as the previous version.

Regards,
Ma Jun

On 12/11/2023 6:06 PM, Ma Jun wrote:
> Due to electrical and mechanical constraints in certain platform designs there
> may be likely interference of relatively high-powered harmonics of the (G-)DDR
> memory clocks with local radio module frequency bands used by Wifi 6/6e/7. To
> mitigate possible RFI interference we introuduced WBRF(Wifi Band RFI mitigation Feature).
> Producers can advertise the frequencies in use and consumers can use this information
> to avoid using these frequencies for sensitive features.
> 
> The whole patch set is based on Linux 6.7.0-rc4 With some brief introductions
> as below:
> Patch1:      Document about WBRF
> Patch2:      Core functionality setup for WBRF feature support
> Patch3 - 4:  Bring WBRF support to wifi subsystem.
> Patch5 - 9:  Bring WBRF support to AMD graphics driver.
> 
> Evan Quan (6):
>   cfg80211: expose nl80211_chan_width_to_mhz for wide sharing
>   wifi: mac80211: Add support for WBRF features
>   drm/amd/pm: update driver_if and ppsmc headers for coming wbrf feature
>   drm/amd/pm: setup the framework to support Wifi RFI mitigation feature
>   drm/amd/pm: add flood detection for wbrf events
>   drm/amd/pm: enable Wifi RFI mitigation feature support for SMU13.0.7
> 
> Ma Jun (3):
>   Documentation/driver-api: Add document about WBRF mechanism
>   platform/x86/amd: Add support for AMD ACPI based Wifi band RFI
>     mitigation feature
>   drm/amd/pm: enable Wifi RFI mitigation feature support for SMU13.0.0
> 
>  Documentation/driver-api/index.rst            |   1 +
>  Documentation/driver-api/wbrf.rst             |  78 +++++
>  drivers/gpu/drm/amd/amdgpu/amdgpu.h           |   2 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c       |  17 +
>  drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c     | 208 ++++++++++++
>  drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h |  42 +++
>  .../inc/pmfw_if/smu13_driver_if_v13_0_0.h     |   3 +-
>  .../inc/pmfw_if/smu13_driver_if_v13_0_7.h     |   3 +-
>  .../pm/swsmu/inc/pmfw_if/smu_v13_0_0_ppsmc.h  |   5 +-
>  .../pm/swsmu/inc/pmfw_if/smu_v13_0_7_ppsmc.h  |   3 +-
>  drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h  |   3 +-
>  drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h  |   4 +
>  .../gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c    |  48 +++
>  .../drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c  |  22 ++
>  .../drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c  |  13 +
>  drivers/gpu/drm/amd/pm/swsmu/smu_internal.h   |   3 +
>  drivers/platform/x86/amd/Kconfig              |  14 +
>  drivers/platform/x86/amd/Makefile             |   1 +
>  drivers/platform/x86/amd/wbrf.c               | 317 ++++++++++++++++++
>  include/linux/acpi_amd_wbrf.h                 |  91 +++++
>  include/net/cfg80211.h                        |   9 +
>  net/mac80211/Makefile                         |   2 +
>  net/mac80211/chan.c                           |   9 +
>  net/mac80211/ieee80211_i.h                    |   7 +
>  net/mac80211/main.c                           |   2 +
>  net/mac80211/wbrf.c                           |  95 ++++++
>  net/wireless/chan.c                           |   3 +-
>  27 files changed, 997 insertions(+), 8 deletions(-)
>  create mode 100644 Documentation/driver-api/wbrf.rst
>  create mode 100644 drivers/platform/x86/amd/wbrf.c
>  create mode 100644 include/linux/acpi_amd_wbrf.h
>  create mode 100644 net/mac80211/wbrf.c
>