Re: [linux-fbdev] ISA memory space on != ia32

From: Geert Uytterhoeven (geert@linux-m68k.org)
Date: Tue May 09 2000 - 04:28:47 EST


On Sun, 7 May 2000, Ralf Baechle wrote:
> On Sat, May 06, 2000 at 10:46:29PM +0200, Bernd Harries wrote:
> > Perhaps an additional (enum) Parameter to select the ISA space?
> > Or an additional function to globally select a 16 MB range as THE ISA
> > space?
> >
> > What would it be like to access ISA IO space on archs which have mmapped
> > IO?
> > Some even have ISA IO inside 64K of _each_ ISA MEM space.
>
> Before even thinking more about this - do we really have things as tastless
> as multiple ISA spaces in Linux supported systems? I've seen plenty of
> braindead system designs but not yet multiple ISA busses.

I think this is the case on PowerMacs with multiple host/PCI bridges.
Fortunately there's no real ISA hardware there, so I think the only problem is
plain VGA cards.

Gr{oetje,eeting}s,

                                                Geert

--
Geert Uytterhoeven -- Linux/{m68k~Amiga,PPC~CHRP} -- geert@linux-m68k.org

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

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