kernel panic trying to utilize a da(4)/umass(4) device with ohci(4)

Bernd Walter ticso at cicely12.cicely.de
Fri Nov 21 12:30:11 PST 2003


On Fri, Nov 21, 2003 at 12:35:50PM -0500, Brian F. Feldman wrote:
> Doug White <dwhite at gumbysoft.com> wrote:
> > The OHCI driver is largely synced with NetBSD so you might see if they
> > have the same bug.
> 
> I'll look around for a bootable NetBSD CD.

NetBSD is different in that point.

> > This might be the underlying wierdness we were seeing in gtetlow's
> > microdrive with transfers over 8k.  The one-page-crossing ohci limitation
> > is really annoying.
> 
> Is there a way to add a quirk for max 8k transfers or anything?  Even though 
> that would be patently lame, I'd like to get some sort of workaround here.  
> I don't even know what is supposed to be the problem here -- the fact that 
> it's an ohci controller, an ohci+ehci controller, or that it's some specific 
> controller issue...

We never did any page crossing on ohci/ehci bevor the newbus change
took place.

-- 
B.Walter                   BWCT                http://www.bwct.de
ticso at bwct.de                                  info at bwct.de



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