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Date:      Wed, 14 Jan 2026 06:43:46 +0000 (UTC)
From:      "Bjoern A. Zeeb" <bz@FreeBSD.org>
To:        Tassilo Philipp <tphilipp@potion-studios.com>
Cc:        freebsd-wireless@freebsd.org
Subject:   Re: iwlwifi(4) on riscv64 (intel ax200)
Message-ID:  <10pp4pqn-oosp-9437-7q32-proos1p57r9n@mnoonqbm.arg>
In-Reply-To: <20260117535483.43589553@potion-studios.com>

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On Mon, 5 Jan 2026, Tassilo Philipp wrote:

Hi,

> I thought I simply share this here, maybe it's useful to someone. I got an 
> intel wifi-6 ax200 m.2 slot card working on a HiFive Unmatched board w/ fbsd 
> 15.0. It seems to work fine for me, so far, but it's in no way thoroughly 
> tested...
>
> In order to build the if_iwlwifi kernel module I needed to disable ACPI in 
> the module's Makefile, and patch a source file to add some missing ACPI 
> related #ifdefs.
>
> Also, some firmware files need to be built and installed via ports' 
> net/wifi-firmware-iwlwifi-kmod. Those firmware files can be built on any 
> platform - when building them on riscv64 themselves, a small patch needs to 
> be applied to net/wifi-firmware-kmod so riscv64 isn't excluded, though.
>
> Anywho, to have a seemingly working iwlwifi(4) on my riscv64 setup, the 
> following steps were needed:
>
> 1) make sure src is installed
> 2) apply attached patch (which does the tweaks described above)
> 3) build/install kernel module from source:
>    cd /usr/src/sys/modules/iwlwifi
>    make
>    make install clean
> 4) install firmware port:
>    cd /usr/ports/net/wifi-firmware-iwlwifi-kmod
>    make install clean
> 5) kldload wlan_ccmp wlan_amrr if_iwlwifi
>
> As said, thought that I share this here, happy that it's working, but no idea 
> or guarantee about stability and correctness.


There is a stack of 5 changes open for review as of last night:
 	https://reviews.freebsd.org/D54694

One is for the firmware in ports.

The others are (a) ACPI related for RISC-V so we get the headers on __riscv
as well so we do not have to change other driver code, and (b) module Makefile
related to enable ACPI based on DEV_ACPI and factor out the LinuxKPI wireless
drivers in their own block also compiling them on RISC-V.  Turns out rtw89 is
broken requiring ACPI unconditionally (also on Linux it seems) so it's currently
disabled until I get to the point of fixing that in an upstreamable way.

Hope they can land soon.

Thanks a lot again for letting us know!

/bz

-- 
Bjoern A. Zeeb                                                     r15:7


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