Re: X server support?

[Michael Lorenz <macallan%netbsd.org@localhost>]

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Hello,

On Sep 10, 2008, at 1:50 PM, KIYOHARA Takashi wrote:

> From: Michael Lorenz <macallan%netbsd.org@localhost>
> Date: Tue, 9 Sep 2008 23:52:30 -0400
>
> > > I want support the X server for port bebox and prep.
> > > What should I first do?
> > >
> > > I copied some files of /usr/X11R6/lib/modules of macppc.  And, mmap
> > > tried
> > > the map of 0xfc000000 and it failed though Driver was set to s3 in
> > > XF86Config for bebox.
> >
> > Sure it wasn't 0xf2000000? That would be the Xserver trying to mmap
> > the PCI IO space.
>
> hmm...
> I put XF86Config and XFree86.0.log's on bebox.
>
>   http://www.kk.iij4u.or.jp/~kiyohara/tmp/bebox/XF86Config
>   http://www.kk.iij4u.or.jp/~kiyohara/tmp/bebox/XFree86.0.log.s3
>   http://www.kk.iij4u.or.jp/~kiyohara/tmp/bebox/XFree86.0.log.vga
>   http://www.kk.iij4u.or.jp/~kiyohara/tmp/bebox/XFree86.0.log.wsfb

This is where mapping IO space fails:
(WW) xf86EnableIO 5
(II) xf86EnableIO: ffffffff
(WW) Can't map IO space!

Then X tries to mmap the card's framebuffer aperture, apparently  
believing it's at 0xfc000000 but I see no such range reported in the  
PCI scan. Could you please post the card's pcictl dump output?
I suspect that the card either doesn't have a BAR for its aperture or  
the driver doesn't look at it and tries to get the aperture address  
from the graphics chip's IO registers which returns bogus since we  
failed to map IO space.
If the card doesn't use a BAR for its aperture we have a problem  
since drivers like genfb will only let you mmap ranges that are  
either known to belong to the graphics chip or PCI IO.

have fun
Michael

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