On Tue, Feb 4, 2014 at 4:40 PM, Roman Yeryomin <leroi.li...@gmail.com> wrote:
> Thanks for answer, Helmut!
>
> On 3 February 2014 18:01, Helmut Schaa <helmut.sc...@googlemail.com> wrote:
>> On Sat, Feb 1, 2014 at 1:08 AM, Roman Yeryomin <leroi.li...@gmail.com> wrote:
>>> Unfortunately I have no experience in wifi drivers and this is my
>>> first one. Even worse I don't know what those register (rfcsr and bbp)
>>> writes _should_ do because they are not in datasheet (I suppose the
>>> earlier chips rf registers are not documented also).
>>
>> Yep, there are no documents out there as far as I know :/
>
> So it's mostly just magic and assumptions...
>
>>> Attaching the patches hoping somebody with more experience could help
>>> or at least give an advise. The patches are not very clean and
>>> probably some things can be done in a different way but that's not the
>>> point right now.
>>>
>>> Currently wifi interface appears in the system and can be enabled but
>>> `iw dev wlan0 scan' gives no result and wlan0 transmits one packet
>>> roughly in 10 minutes as per ifconfig (ssid doesn't appear in the
>>> air).
>>> `iw phy' output looks like this:
>>
>> Maybe you should start with a simple monitor interface to get the RX
>> path working (iw phy phy0 interface add mon0 type monitor).
>> Just run a tcpdump on mon0 and see if you can receive something (with
>> your patches applied).
>
> Unfortunately it doesn't give any results.
> Also rx counter was always zero - I forgot to mention that.
> What I thought was suspicious is "Available Antennas: TX 0 RX 0" in iw
> phy output, but I've checked other chips which do work and they all
> have the same record.

Yeah, rt2x00 does not initialize these AFAIK.

So, you ported the code from the ralink rt2860 driver, right?
I haven't looked into newer ralink chips at all. Did you check if any MAC
layer changes regarding RX and TX rings exist?

helmut
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