KZPCC-CE SCSI controller

[David O'Brien]

On Tue, Aug 02, 2005 at 07:41:44PM +0200, Bernd Walter wrote:
> On Tue, Aug 02, 2005 at 10:23:22AM -0700, David O'Brien wrote:
> > It will not work as-is.  I suspect it could be made to work using the
> > ugly hack we have elsewhere in src/sys:
> > 
> > #ifdef __alpha__                                                                
> > #undef vtophys                                                                  
> > #define vtophys(va)     alpha_XXX_dmamap((vm_offset_t)va)  
> 
> So this driver is not busdma'ed yet?

Correct.

> Igh - this will invalidate it for lots of machines, not just alpha.

Very well known.

> Since I'm working on > 2G support and AFAIK the asked machine can
> have more than that this may be a problem.
> I intent to panic if a driver calls vtophys on a large mem alpha.

You might want to see how many drivers still do this ugly vtophys hack.
I recall are(were) several.

-- 
-- David  (obrien at FreeBSD.org)