Re: r500 - where to start?

[Magnus A. <mag...@gm...>]

Ah, I figured almost everything except where to get that adress from,
I'll try it out and see if I can catch anything useful.

2007/1/8, Jerome Glisse <j.g...@gm...>:
> On 1/8/07, Magnus Ahlberg <mag...@gm...> wrote:
> > > From limited informations we got on those chips we miss the 2D
> > > video mode setup. Basicly you need to spy bios/vbe try using
> > > a tools such as mjg59/airlied vbe, you might also want to spy
> > > fglrx maybe libsegfault can help you people.freedesktop.org/~glisse/
> >
> > I got libsegfault but I haven't quite been able to figure out how to
> > use it, I'm not at all experienced with graphics drivers or the way
> > Xorg works with drivers. However, I'm hoping that I can be of some
> > assistance by using some of theese tools to provide information to
> > other, more experienced developers. I have tried to find the bios
> > spying software you described but I can't seem to find them, could you
> > please provide a link on where to download them?
>
> I thought i put a little readme in the archive. The idea here is
> to set SF_ADDR env variable to your mmio address (get it
> using lspci for example if you got:
>
> 01:00.0 VGA compatible controller: ATI Technologies Inc RV380 [Radeon
> X600 (PCIE)] (prog-if 00 [VGA])
>         Subsystem: ATI Technologies Inc Unknown device 0f02
>         Flags: bus master, fast devsel, latency 0, IRQ 169
>         Memory at f0000000 (64-bit, prefetchable) [size=128M]
>         Memory at fe9e0000 (64-bit, non-prefetchable) [size=64K]
>         I/O ports at dc00 [size=256]
>         Expansion ROM at fea00000 [disabled] [size=128K]
>         Capabilities: <access denied>
> $export SF_ADDR=0xfe9e0000
> then
> $LD_PRELOAD=/pathto/libsegfault.so Xorg > dump 2>&1
> with xorg.conf configured to use fglrx driver.
>
> For the video bios spying tools:
> http://people.freedesktop.org/~airlied/xresprobe-mjg59-0.4.21.tar.gz
>
> > > I am myself planning to take a look into that matter in the
> > > few coming days. Maybe i will got somethings in couple of
> > > day.
> >
> > Have you had the time to look at it, and if so, did you figure anything out?
>
> I found a couple of things but i am not familiar enought with modesetting,
> so i am taking time to understand all this. We may need to start somethings
> similar to nouveau to bring more attention and more people on this. I fear
> that most current dri dev can't work on this due to NDA or lack of time.
>
> best,
> Jerome Glisse
>