Date: Sun, 29 Mar 2026 15:55:16 +0000 (UTC) From: "Bjoern A. Zeeb" <bz@FreeBSD.org> To: Nuno Teixeira <eduardo@freebsd.org> Cc: freebsd-wireless@freebsd.org Subject: porting bwfm from N/OBSD [was Re: Rebuilding brcmfmac Wi-Fi driver with the help of AI] Message-ID: <np87oop0-1r32-614q-4spp-rr8o88p99nr@mnoonqbm.arg> In-Reply-To: <CAFDf7UKGmF=gwW8Rmr_WfMnrnObWm%2BzwggELsoSKykW85YJBLQ@mail.gmail.com> References: <CAGLqCM=55k2j%2B_-pH7Sdh2SevXyrr6GF3yMaSD_RJMXSfxaz3Q@mail.gmail.com> <75f56507-49e8-4f43-987f-7025d62b0bd9@gmail.com> <CAGLqCMm8nV1dSnVgKj5jQ6Hie-UY30XpeATsnsK=PV%2BauTaSnw@mail.gmail.com> <CAGLqCMmgSX7FebjUuRh-Qjbdt9bnq0Rm=As1D_g=45qgrVY8jw@mail.gmail.com> <CAFDf7UKGmF=gwW8Rmr_WfMnrnObWm%2BzwggELsoSKykW85YJBLQ@mail.gmail.com>
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On Sun, 29 Mar 2026, Nuno Teixeira wrote: Hi Nuno, > It seems that OpenBSD and NetBSD have drivers for BCM43455. Could those > drivers be imported fo FreeBSD? There's been like at least 3 or 4 people I know off, if not more, who started porting bwfm over the course of the last years; everyone went silent. That's the reason we now do have a compiling brcmfmac driver for LinuxKPI in the tree; it laods firmware on PCIe on X86 (and with a workaround on arm64) (and in theory on USB in my dev tree). In another dev tree sits a 85% finished SDIO implementation mostly tested on rtw88, where I already create wlan interfaces and have scanning results, etc. The one thing which is missing for brcmfmac really is a cfg80211/netdev compat shim to drive this, of which we porbably have half as well already in LinuxKPI. But that's kind-of disruptive to the other ongoing work for all the other mac80211-based drivers and so I have not really had a good look. It could boil down to three functions, it could boil down to a lot more. Preliminary LinuxKPI USB support is blocked on cleaning up some older compiler options in the tree, which we currently do not yet understand. Getting SDIO out as-is simply "need time to sit down", rebase and open reviews. In other words I need to finish the rtw8x (and mt76) work before I can find free time to look at it. rtw8x/LinuxKPI I really want in 15.1-R and the time for that is ticking. /bz -- Bjoern A. Zeeb r15:7home | help
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