Re: Where arch/bebox/pci/pfb.c?

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

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Hello,

On May 15, 2008, at 02:54, KIYOHARA Takashi wrote:

> From: Tim Rightnour <root%garbled.net@localhost>
> Date: Wed, 14 May 2008 00:05:40 -0700 (MST)
>
> > On 14-May-2008 KIYOHARA Takashi wrote:
>
> > > However, I learnt pfb (PCI Frame buffer) had disappeared.  Did you
> > > delete arch/bebox/pc/pfb.c and arch/bebox/pci/pfbvar.h at the  
> > > time of
> > > merging ppc-oearenovation?  Or, did you move?
> >
> > I deleted it.  Mostly because it was a really old style  
> > framebuffer, and it
> > just didn't look right to me at all.  It should still be in the  
> > attic, however,
> > I think the primary reason I got rid of it was that it was a pcvt  
> > console, and
> > not a wscons console.  I think most of the pcvt stuff is gone, and  
> > it just
> > didn't make sense to keep around.
> >
> > I think what the correct thing to do in your case, would be to  
> > start with
> > genfb, and get that working.  In theory, it should work with any  
> > card, as long
> > as you know the current display mode of the card.  Once you have a  
> > working
> > console with genfb, then maybe look into writing a proper matroxfb  
> > or s3virgefb.
>
> hmm... I can't understand. X-<
> Should I attach genfb?  In that case, how should be done the  
> console?  Do
> not we have a console until genfb is attached?

If the bebox firmware doesn't provide text output routines and we  
don't call them then - no, there wouldn't be any visible output until  
genfb attaches.

> Shall I define?
>
>   # generic PCI framebuffers
>   genfb*          at pci?
>
>   # make sure the console display is always wsdisplay0
>   wsdisplay0      at wsemuldisplaydev? console 1
>   wsdisplay*      at wsemuldisplaydev?

Exactly.
Please have a look at powerpc/oea/ofw_autoconf.c for an example of  
how to pass parameters to genfb ( basically you catch it in  
device_register() and attach device properties telling the driver how  
to map video memory and what graphics mode you're using )
Sparc64 has similar code ( see sparc64/sparc64/autoconf.c )

have fun
Michael

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