Re: PowerPC SCSI driver

[Geert U. <ge...@li...>]

On Sun, 17 Sep 2000, F. Heitkamp wrote:
> On Sun, Sep 17, 2000 at 08:01:03PM +0200, Geert Uytterhoeven wrote:
> > On Sun, 17 Sep 2000, Michel [iso-8859-1] Dänzer wrote:
> > > "F. Heitkamp" schrieb:
> > > > CACHE TEST FAILED: host wrote 5, ncr read 0.
> > > > CACHE TEST FAILED: ncr wrote 7, host read 5.
> > > > CACHE INCORRECTLY CONFIGURED.
> > > 
> > > This looks like the CPU only writes to and reads from cache. Maybe you should
> > > map the memory as uncacheable?
> > 
> > Or you wrote to a different place than the NCR expects, so the result in
> > memory wasn't modified.
> 
> It is beyond me how the structure is aligned in memory.
> I wish I could draw a nice picture of where things should
> be but I don't know enough about the memory layout of 
> the Amiga or Linux.
> 
> Yes.  It apears that the scratcha register which had a 
> non zero value in it, had a zero written to it, however
> the value the was in the ncr_cache variable was unchanged.
> So the script did not access the proper location.  Here is
> the script section:

Is it possible cpu_to_scr(), scr_to_cpu(), ncr_offb() and ncr_offw() are
wrong?

Perhaps it would help if you could find a script created by the AmigaOS
driver?

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- ge...@li...

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds