Keith Curtis wrote:
> I never resolved the problem. I turned on the excessive debugging output, but it
> didn't print out info about receiving packets or interrupts. My test
> app claimed there were no packets received although the bus analyzer
> showed lots of packets going by.
>
> If I can help out, let me know, but I'm not sure where to start at this point.
...
> -----Original Message-----
> From: Robert Crocombe [mailto:[email protected]]
> Sent: Tuesday, November 28, 2006 4:59 PM
...
> Did you ultimately have any success getting this going? Funnily
> enough, when I tested isochronous stuff in July, I just did iso
> transmit since I figured receives *must* be working since everyone has
> camcorders and whatnot. My currently my iso xmit stuff does appear to
> be working, but iso receives are not.
>
> I have a Firespy and no reason not to trust it, so I can see the junk
> I'm spewing out. I've tried transmitting on channels 4 and 63 (per
> your advice), but neither works for me. I suppose it could my
> stuff... nah.
I don't know much about the mechanisms, but I suppose there could be one
of the following causes:
- The IR DMA context was never set up for the respective channel in the
first place.
- The context was set up but the interrupt event masks weren't switched
on, i.e. IntMask as per OHCI clause 6.2 and isoRecvIntMask as per
clause 6.3.2.
- The context and masks were set up, but then one or both of the masks
were switched off again, similar to the bus reset bug which Robert
reported: http://bugzilla.kernel.org/show_bug.cgi?id=7569
--
Stefan Richter
-=====-=-==- ==-- ----=
http://arcgraph.de/sr/
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