Re: Re: [Dri-devel] Rage128 and Radeon patches

[Jon Smirl <jonsmirl@yahoo.com>]

--- Benjamin Herrenschmidt <benh@kernel.crashing.org>
wrote:

> Well... Again, this has to be verified in real life,
> but
> my understanding is that the BIOS code, once it has
> probed
> the DFP flat panel, will put the EDID data in RAM
> somewhere
> within the copy of the BIOS, which is where we then
> find
> it... The best thing would still be, of course, to
> implement
> full DDC probing in radeonfb like XFree does. This
> has been
> on my todolist for a while now, but I lack time. 
> 
> Ben.
> 

Putting the EDID data into the RAM copy will never
work the case where there are multiple cards since
there is only one copy of the ROM in low RAM.

Personally I'd just like to ignore the boot VROM and
do everything in the Radeon driver code. But ATI won't
give out detailed info on how to read EDID or reset
the card with C code from the driver. So instead we
end up with the idiotic x86 emulator and doing INT10's
in simulated real mode.

Maybe someone with more leverage can coax this info
out of them.....


=====
Jon Smirl
jonsmirl@yahoo.com

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