[wireless-next][PATCH 0/3][ANNOUNCE] b43 the first Linux driver supporting HT-PHY (BCM4331)!

James Anslow james at jamesanslow.net
Sat Aug 27 08:59:50 EDT 2011


On 27/08/11 11:22, Rafał Miłecki wrote:
> 2011/8/27 James Anslow <james at jamesanslow.net>:
>> On 26/08/11 19:41, Rafał Miłecki wrote:
>>> After improving DMA (the important patch for BCM4331 is my one) we can finally
>>> enable support for HT-PHY. The whole code has been written from MMIO dumps
>>> grabbed from ndiswrapper+windows driver, but seems to be stable and was tested
>>> by 3 people. Unfortunately there are still some missing conditions that can't
>>> be fixed without RE the closed driver or having Broadcom co-operating. However
>>> it seems we live with that well enough for basic usage :)
>>>
>>> BCM4331 doesn't have any Linux driver yet, both: wl and brcm80211 don't support
>>> it. So we can be really proud of it ;) Ah, and I should mention that ndiswrapper
>>> was frequently reported to lock up machines when working with this card (see
>>> Ubuntu's forum about MacBook 8.1).
>>>
>>> To use b43 with BCM4331 you will need to grab the newest b43-fwcutter and
>>> extract firmware from some recent closed source driver. See our wiki page in
>>> few hours for nice howto.
>>>
>>> Big thanks go to David Woodhouse for providing me access to his MacBook, letting
>>> grab the dumps, test patches and debugging a lot of hard cases with me (and
>>> sometime without ;) ).
>>>
>>> Larry Finger (1):
>>>   b43: Relax requirement for descriptors to be in the DMA zone
>>>
>>> Rafał Miłecki (2):
>>>   b43: use 8K buffers for 64-bit DMA to workaround hardware bug
>>>   b43: make HT-PHY support experimental
>>>
>>>  drivers/net/wireless/b43/Kconfig |    6 +++---
>>>  drivers/net/wireless/b43/dma.c   |   31 ++++++++++++++++---------------
>>>  drivers/net/wireless/b43/dma.h   |    3 ++-
>>>  3 files changed, 21 insertions(+), 19 deletions(-)
>>>
>> I've checked the wiki page and downloads area but the latest version of
>> fwcutter that I could find was from several days ago.
>>
>> Can anyone direct me towards the latest b43-fwcutter download as
>> mentioned above?
>>
>> Can't wait to get 4331 support!
> Just use the howto for kernel 3.2 (I know it's a little tricky for now
> to use 3.2, wireless-next is also OK for that howto):
> http://wireless.kernel.org/en/users/Drivers/b43#Other_distributions_not_mentioned_above
>
> You have to:
> 1) Clone git repository wireless-next
> 2) Apply 3 patches from this patchset
> 3) Compile kernel with B43_PHY_HT
> 4) Install firmware (I think you already started that part)
>
> b43-fwcutter in 015 version is alright for extracting 666.2 firmware.
>
Thanks for your support on this.

I'm not too knowledgeable when it comes to kernel development. However,
I am eager to learn.

I've cloned the repo and have wireless-next.

Can you tell me where I will find these 3 patches to apply them to
wireless-next?

Many thanks

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