[wdmaudiodev] Re: question on DMUS UART

  • From: "Philip Lukidis" <pagefault0x0@xxxxxxxxxxx>
  • To: <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Thu, 27 Nov 2003 08:12:58 -0500

----- Original Message ----- 
From: "Philip Lukidis" <pagefault0x0@xxxxxxxxxxx>
To: <wdmaudiodev@xxxxxxxxxxxxx>
Cc: "Richard Fricks" <richfr@xxxxxxxxxxxxx>; "Hakon Strande"
Sent: Wednesday, November 26, 2003 5:42 PM
Subject: [wdmaudiodev] Re: question on DMUS UART

> ----- Original Message ----- 
> From: "Martin Puryear" <martinp@xxxxxxxxxxxxxxxxxxxxx>
> To: <wdmaudiodev@xxxxxxxxxxxxx>
> Cc: "Richard Fricks" <richfr@xxxxxxxxxxxxx>; "Hakon Strande"
> <hakons@xxxxxxxxxxxxxxxxxxxxx>
> Sent: Wednesday, November 26, 2003 5:06 PM
> Subject: [wdmaudiodev] Re: question on DMUS UART
> > Yes, this could be the case.
> > If a defect is found in the sample or miniport (especially if you have a
> > fix in hand!), please let RichFr and HakonS know, and we can get the DDK
> > updated.    You should also include whether you experience this problem
> > on HyperThreaded uniproc systems.
> >
> > Also, Philip could you send HakonS and RichFr a kernel-mode dump file of
> > this crash?  That way we can correlate this problem to crash counts in
> > OCA, to lend credence when we lobby to include a fix in XPSP2 (or
> > whenever).
> >
> [snip]
> Hi Martin, thanks for answering so quickly.  I am not using the sample
> provided in the .net DDK, or any other DDK.  If time permits I may try
> adapting the sample code for my use as a test, but time is tight now.
> I would be happy to send a kernel-mode dump (or a full dump as need be).
> will contact HakonS and RichFr from my work email, so I can know to which
> server to upload the dump.  Also a note of interest, I have worked on
> another PCI sound card in the past, and I used IMiniportMidi instead of
> IMiniportDMus.  I would have to test overnight to be sure, but IIRC
> tests on an SMP machine revealed no issues with MIDI capture.  Thanks,
> Philip Lukidis
> ******************

FWIW I ran a previously made MIDI driver based on IMiniportMidi all night on
the same SMP machine, with driver verifier verifying portcls (all options
except low resources and DMA checking).  No problems whatsover.

Does anyone else have any problems with IMiniportDMus based drivers on SMP
machines?  I did not test on HT machines.  In the end I may have no choice
but to convert to IMiniportMidi if I cannot identify any issues on my side.

Philip Lukidis

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