FB model basic issues (WAS: radeon, apertures & memory mapping)

Benjamin Herrenschmidt benh at kernel.crashing.org
Wed Mar 16 15:30:01 PST 2005


On Wed, 2005-03-16 at 23:08 +0200, Ville Syrjälä wrote:
> On Wed, Mar 16, 2005 at 03:58:07PM -0500, Alex Deucher wrote:

> I haven't seen anyone coming forward with a design/code for the memory 
> manager.
> 
> In the meantime I'm assuming that people might want to make some use of 
> their dualhead cards...

Are you aware that with the current fbdev API, there will simply be no
working use of dual head ? As soon as somebody will try to do 2
different things on the 2 heads, it will either lockup due to lack of
engine arbitration, or have wrong endianness, or whatever ...

Ben.





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