Subject: Re: or DELAY() ?
To: None <tech-kern@NetBSD.org>
From: Reinoud Zandijk <firstname.lastname@example.org>
Date: 09/09/2006 15:28:15
Content-Type: text/plain; charset=us-ascii
On Fri, Sep 08, 2006 at 10:23:39PM +0200, Reinoud Zandijk wrote:
> i'm having a curious problem with my auixp driver (PCI). Using a clean
> sourcetree dated 20060907 it all works fine but when updating the
> sourcetree to 20060908 it gets into trouble communicating with its codecs.
> The codecs detect fine but it times out all the times when reading in the
> function auixp.c:auixp_read_codec(). I noticed christos (?) changed some
> PCI reset functions that might be the cause though when i reverse that
> patch it still doesn't work anymore so i dont think thats the cause.
> Running a GENERIC or a GENERIC.MPACPI doesn't matter and the problem
> resolves itself when i disable the auixp driver.
> Did something change in the PCI framework that could cause it ? Could any
> of you PCI guru's have a look at the driver to see what it does wrong?
Greg Oster pointed to me that it could also be due to the
timecounter/DELAY() changes... has that interface/resolution changed? The
code uses DELAY(2) a few times to wait for the obliged few microsecs to
give the device time to respond.
Thanks in advance,
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