Re: [PATCH RFC wireless-next 0/3] wifi: b43: core revision 40 and 42 MAC setup (series 2/4)

[Julian Calaby]

Hi Andreas,

Why am I being CC'd on these patches? I've never maintained or done
any significant review of patches for this driver, have barely been
active on this list in years, and am unsubscribed.

Could you please fix whatever script you're using that is spitting out
my email address? (Also Kalle Valo hasn't been working in the Linux
wireless space for a long time either)

Thanks,

Julian Calaby

On Fri, Nov 13, 2026 at 4:56 AM Andreas Wendleder <gonsolo@xxxxxxxxx> wrote:
>
> MAC core support for the BCM4352/BCM4360 core revisions 40 and 42. Things
> that depend on the core revision are gated on it (b43_is_ac_core()),
> things that depend on the microcode layout are gated on the microcode
> revision (b43_ucode_is_ac(), revision 784 and above, set once the
> microcode is loaded). The TX and RX formats and the PHY are not in this
> series. Based on series 1/4.
>
> This is posted as RFC so that people with these chips can use and test
> it now; b43 is orphaned and nobody is set to take these patches at the
> moment. Series 1/4 is on the list:
> https://lore.kernel.org/linux-wireless/20261014143225.82149-1-gonsolo@xxxxxxxxx/
>
> Where the values come from: the register sequences and table contents were
> taken from Broadcom's wl driver running on this MacBook, by tracing its
> register accesses (bpftrace on wl's MMIO accessors), and reduced to what
> the hardware needs. Parts come from Alessio Ferri's AC-PHY work (the PHY
> init sequence, the 40 and 80 MHz coefficient tables, a TX gain table, the
> Farrow resampler formula, the VHT fields of the TX descriptor, register
> and table names), and some formats follow brcmsmac.
> The result was tested on the hardware as described below.
>
> Each patch compiles on its own (kernel 7.2.10 headers). The four series
> together were run on a MacBookAir6,1 (14e4:43a0, BCM4360, core revision 42,
> microcode 832.127, 2 of 3 chains wired) on top of v7.3-rc5's b43. The AC PHY
> only comes with series 4, so the earlier series cannot be exercised on this
> hardware alone.
>
> Andreas Wendleder (3):
>   wifi: b43: set the DMA burst and prefetch bits of core revisions 40
>     and 42
>   wifi: b43: MAC core setup for core revisions 40 and 42
>   wifi: b43: address match table, templates and beacons for the AC
>     microcode
>
>  drivers/net/wireless/broadcom/b43/b43.h  |  14 ++
>  drivers/net/wireless/broadcom/b43/dma.c  |   4 +
>  drivers/net/wireless/broadcom/b43/dma.h  |   2 +
>  drivers/net/wireless/broadcom/b43/main.c | 242 +++++++++++++++++++++--
>  4 files changed, 246 insertions(+), 16 deletions(-)
>


-- 
Julian Calaby

Email: julian.calaby@xxxxxxxxx
Profile: http://www.google.com/profiles/julian.calaby/