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Re: Porting AR6K to use cfg80211

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On Fri, Sep 25, 2009 at 2:16 PM, Luis R. Rodriguez <mcgrof@xxxxxxxxx> wrote:
> On Fri, Sep 25, 2009 at 2:06 PM, Luis R. Rodriguez <mcgrof@xxxxxxxxx> wrote:
>> On Fri, Sep 25, 2009 at 1:57 PM, Dave <kilroyd@xxxxxxxxxxxxxx> wrote:
>>> Matthew Ryan wrote:
>>>> Michael Buesch <mb@...> writes:
>>>>> On Friday 25 September 2009 19:40:52 Matthew Ryan wrote:
>>>>>> I was curious if I could get a few expert opinions on if its possible to port
>>>>>> this driver to use mac80211, and how difficult/ what pitfalls there may be.
>>>>> The device is fullmac, so it does not require mac80211.
>>>>> I guess however, ar6k can be ported to use cfg80211.
>>>>>
>>>>
>>>> Do you know of any examples in the source tree which are fullmac, but utilize
>>>> cfg80211 that I could use as a base to get started?
>>>
>>> There are a few fullmac drivers in wireless-testing that use cfg80211. I
>>> don't think these are in the recently released 2.6.31, but are queued
>>> for 2.6.32.
>>>
>>> iwmc3200wifi and rndis_wlan are furthest along. orinoco is in the
>>> process of conversion (it uses cfg80211, but relies on the wext
>>> compatibility code for a large portion of functionality).
>>
>> Additionally you can poke at the HTC / HIF stuff I'm doing for ar9271:
>>
>> http://wireless.kernel.org/en/users/Drivers/ath9k_htc
>>
>> Granted I've removed all credit distribution stuff as ar9271 doesn't
>> use it, but it still may be easier to use that then what I had seen on
>> ar6k for HTC.
>
> Let me clarify a little more.
>
> ath9k_htc is a module which will use ath_htc and ath_hif_usb.
> ath9k_htc delcares hardware support for the 802.11n Atheros 9k family
> for devices which use HTC. The ar9271 usb device gets probed by
> ath_hif_usb. ath9k_htc is being designed as the mac80211 driver for
> ar9271 but it may be possible to just share the same ath9k_htc for all
> SoftMAC Atheros 11n HTC devices.
>
> Now, ar6k is FullMAC so an ath9k_htc per se is not needed but I'd
> expect you'd just need to implement a ar6k.c which uses cfg80211 and
> adds support for the ar6k hw famiy. You'd need to implement an
> ath_hif_sdio.c to handle the SDIO transport and this would be the
> module probing the ar6k devices over sdio. Now, sure, I don't expect
> any PCI/USB ar6k devices but still, this is the architectural approach
> I'd like to see.

Oh and I missed my main point: if the above is possible we can then
share an ath_htc.

  Luis
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