airgo wireless drivers

Cheney Tang seerfar at gmail.com
Sun May 4 14:27:18 UTC 2008


On Mon, Apr 28, 2008 at 12:22 AM, Williams, Jeffrey D. <angelbane at ou.edu> wrote:
>
>
>  ________________________________________
>  From: YanBo [dreamfly281 at gmail.com]
>  Sent: Sunday, April 27, 2008 1:59 AM
>  To: Cheney Tang
>  Cc: Wessam Baghdadi; prjmgr at linuxdriverproject.org; Williams, Jeffrey D.; wireless
>  Subject: Re: airgo wireless drivers
>
>
>  On Sun, Apr 27, 2008 at 1:33 PM, Cheney Tang <seerfar at gmail.com> wrote:
>  > On Fri, Apr 25, 2008 at 3:50 PM, Wessam Baghdadi <wbaghdadi at gmail.com> wrote:
>  >  > hi,
>  >  >
>  >  >  I've been looking into the out of tree driver for Airgo MIMO wireless
>  >  >  - the current status is detaied in a post on the linux wireless
>  >  >  mailing list http://article.gmane.org/gmane.linux.kernel.wireless.general/13784
>  >  I am reversing engineer the airgo driver on Windows. There are some
>  >  difficulty, especially
>  >  no one disasseembly tool can deal with it fully. IDA can disassemble
>  >  only some parts and others is not available. I try another method to
>  >  reverse it. From the current partial result obtained, it is very
>  >  different between Window driver and Jeff'
>  >  Specifications(http://airgo.wdwconsulting.net/mymoin).
>  >
>  >  >
>  >  >  Airgo is now part of Qualcomm, but surprisingly enough there is a
>  >  >  claim that one of the airgo engineers had developed linux drivers that
>  >  >  were held back.
>  >  Yanbo had download a Airgo driver from internet and share it with me.
>  >  The driver is for MIPS on Linux 2.4. It composes two files: one is a simple
>  >  module and another is low level driver. IDA can disassemble the former
>  >  and do the
>  >  latter partly. I had try some objdump for MIPS to disassemble it, all failed.
>  >  I guess the driver is for specific chipset.
>  >  >
>
>  I've already got a lot of it reverse engineered. I'd share the sources with you that I do have, but they will be inaccessable to me for at least 4-6 weeks. All I can offer you is to get in touch with Felix Fietkau (nbd) of the openwrt project, he has some source code for the agn300 that you can look at. You'll also need a cross-compiled toolchain for the mips chipset, not the standard objdump. Use crossdev for gentoo, or ubuntu has them in its repos.

I had got the cross compiled toolchain from Yanbo. Does crossdev work on Fedora?
Is the MIPS hardware required? I have only X86 hardware.
I had achieve greatly on reversing the driver on Windows, though there
is no good tool to disassemble it fully yet. I think I can overcome
it. The driver on Windows is for F5D8010 chipset. Some of its action
are identical with the driver on MIPS, otheres not so.
I guess they are not for same chipset and they are the same family chipset.
>
>  Jeff
>



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