linux-kernel - Re: Using s3virge card in Sun Blade 2000

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Date:	Mon, 03 Jan 2011 19:39:01 +0000
From:	Alex Buell <alex.buell@...ted.org.uk>
To:	David Miller <davem@...emloft.net>
Cc:	linux-fbdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Using s3virge card in Sun Blade 2000

On Mon, 2011-01-03 at 10:58 -0800, David Miller wrote:
> From: Alex Buell <alex.buell@...ted.org.uk>
> Date: Mon, 03 Jan 2011 16:32:16 +0000
> 
> > I'm aware the s3fb driver has big endian issues, I can help fix those
> > issues so I can get the card working. Or in other words, I'd welcome
> > advice on how to proceed with this. 
> 
> It's not endian issues, this driver has other problems.
> 
> It uses the VGA register accessors with a NULL regbase, which is not
> going to work on sparc64.
> 
> It needs to access the VGA register space relative to the I/O space
> of the PCI controller domain it is behind.
> 
> Probably if you replace the NULL values passes to vga_r*() and
> vga_w*() with the I/O space resource base of the chip (should be
> resource "1") it might work.

I've had a look at linux/include/video/vga.h, and yes I see what you
mean now.

Secondly, is Linux fully capable of handling different graphic cards
simultaneously? For example, plug in a pair of monitors and have
consoles on both with disparate graphic cards i.e. XVR-500 and S3ViRGE
etc? 
-- 
Tactical Nuclear Kittens
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