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(-)
On 08/26/2011 04:27 PM, Michael Büsch wrote:
> On Fri, 26 Aug 2011 20:41:18 +0200
> Rafał Miłecki<[email protected]> wrote:
>
>> After improving DMA (the important patch for BCM4331 is my one) we can finally
>> enable support for HT-PHY.
>
> I'd really like to thank you guys for your great work on the driver.
> You made some really significant improvements to the driver in the last few
> months and thus ported b43 over to the latest and greatest broadcom
> wireless devices. Things looked messy with only legacy G-PHY support,
> but then you guys appeared. ;) Thanks.
The "guys" are really only one guy, Rafał. His ability to convert ugly mmio
dumps into code is remarkable.
Larry
On Fri, 26 Aug 2011 20:41:18 +0200
Rafał Miłecki <[email protected]> wrote:
> After improving DMA (the important patch for BCM4331 is my one) we can finally
> enable support for HT-PHY.
I'd really like to thank you guys for your great work on the driver.
You made some really significant improvements to the driver in the last few
months and thus ported b43 over to the latest and greatest broadcom
wireless devices. Things looked messy with only legacy G-PHY support,
but then you guys appeared. ;) Thanks.
--
Greetings, Michael.