Re: [ath5k-devel] [PATCH 1/5] ath5k: PHY code cleanup

[Maxim Levitsky <maximlevitsky@gmail.com>]

On Tue, 2009-02-03 at 20:06 +0200, Nick Kossifidis wrote:
> 2009/2/3 Maxim Levitsky <maximlevitsky@gmail.com>:
> > On Tue, 2009-02-03 at 18:24 +0200, Nick Kossifidis wrote:
> >> 2009/2/3 Nick Kossifidis <mickflemm@gmail.com>:
> >> > 2009/2/3 Maxim Levitsky <maximlevitsky@gmail.com>:
> >> >> I just tried your 5 patches, as they could fix hangs in the device,
> >> >> that I experience occasionally, when resuming my aspire one from
> >> ram.
> >> >>
> >> >> I applied the patches, and I got very unstable system, that tended
> >> to
> >> >> hang even before X.
> >> >>
> >> >> When it didn't hang, I tried suspend to ram cycle, but it hanged
> >> then.
> >> >>
> >> >>
> >> >> Best regards,
> >> >>        Maxim Levitsky
> >> >>
> >> >>
> >> >
> >> > It's related to unhandled BMISS interrupts, Bob is working on it to
> >> > see what triggers them. A quick solution is to disable them (as we
> >> > don't handle them anyway) but it would be better to know the
> >> problem.
> >> >
> >
> > Acer aspire one.
> >
> > -wireless-testing tree + 5 patches
> > I test without X running, maybe I could spot an oops or so,
> > currently, system just hangs cold.
> >
> 
> What's your AP, your RSSI etc ?

AP?, just some Siemens b/g device
signal quality is around 100%, ap is in nearby room
WPA2 is used.

I did further test, by switching to console and doing there a
pm-suspend, and system did hand exactly same way, but I did see a
message about softlockup in ath5k.
(in phy-...) 

Also have seen a message about 'not being able to query synaptic...'
and eveything was dead including keyboard and touchpad. (even sysrq
didn't work )



> 
> >
> > PS:
> >
> > Atheros devices consist of MAC and PHY (which sometimes is called radio)
> >
> > It seems that my device has 2425 MAC, but what radio it has?
> > It also seems that most of the driver treats it as a AR5112.
> > I thought before that 5112 was the MAC and 2425 was the radio, but it
> > doesn't seem to be true, can you explain this?
> >
> >
> 
> A card consists (among other things) of a MAC chip (includes PCU, QCU,
> DCU, DMA unit), a radio chip (has synth, bias control etc) and in
> between there is baseband (what's called PHY) that drives the radio
> chip and provides data i/o to the MAC chip.
> 
> First Atheros cards (before 2413) have MAC and PHY on the same chip
> and radio on a separate chip, MAC/BB chips are named AR52XX and radio
> chips RF51XX.
> Newer Atheros cards have all parts on the same chip, MAC is mostly the
> same as AR5212 (that's why we mark them as AR5K_AR5212) but PHY and
> (especially) RF change so the whole chip gets the name of the radio
> chip (RFX4XX -> ARX4XX). So AR2425 has an AR5212 MAC with minor
> modifications and an RF2425 radio chip. SREV register marks the whole
> chip (since it's not only a MAC/BB chip anymore) so this might be
> confusing.

Thanks a lot for explanation, now it is all clear.

Best regards,
	Maxim Levitsky