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

[Ville Syrjälä]

On Wed, Mar 16, 2005 at 10:49:11AM +1100, Benjamin Herrenschmidt wrote:
> In the meantime, can you tell me more about your arbitration scheme ?

There is a lock associated with the graphics card. The lock is always 
taken before programming the hardware. Other things wanting access to the 
hardware wait until the lock is released.

-- 
Ville Syrjälä
syrjala at sci.fi
http://www.sci.fi/~syrjala/