Re: Introduce a want_64bit_pci support [was: PAE support]

[David Young <dyoung%pobox.com@localhost>]

On Wed, Feb 24, 2010 at 02:17:45AM +0100, Joerg Sonnenberger wrote:
> On Tue, Feb 23, 2010 at 06:51:56PM -0600, David Young wrote:
> > On Wed, Feb 24, 2010 at 01:19:41AM +0100, Joerg Sonnenberger wrote:
> > > Would it be reasonable to add a new MI variable
> > >   bool pci_use_64bit_addressing;
> > 
> > This seems like a property that the MD mainbus_attach() routine should
> > set on the pcibus_attach_args before it attaches the host bridge(s).  It
> > may suffice simply to initialize pba_dmat64 to non-NULL.
> 
> ...and the child checks for pa_dmat64 != NULL?

That is what pci_dma64_available(pa) does. twa(4) uses that.

Dave

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933