Suggestions for properly abstracting multiple screens.

[JoJo jojo]

semantics !, lets replace the term arbitrator with "middleware" (is it needed?)

x -> middleware - device.

instead of designing middleware at "per gpu" level
design it as "per crtc" level.

expose the crtcs as virtual device to X,
middleware must handle/interpret gpu specific stuff.

then my original question may be approached keeping the above semantics in mind.

-JoJo

On Tue, Feb 26, 2008 at 1:02 PM, Dave Airlie <airlied at gmail.com> wrote:
>  because a vga arbitrator is for arbitrating VGA, you cannot arbitrate
>  vga one one card with itself.. it makes no sense.
>
>  vga arbitration doesn't expose anything, I think you are just confused
>  on what piece does what or even what the word arbitration means.
>
>  Dave.
>
>
>
>
>  >
>  >  -JoJo
>  >
>  >
>  >
>  >  On Tue, Feb 26, 2008 at 12:34 PM, Dave Airlie <airlied at gmail.com> wrote:
>  >  >  Nope, the vga aribiter is only for arbitration between VGA registers
>  >  >  on multiple GPU, its just part of the puzzle to getting multi-seat
>  >  >  working..
>  >  >
>  >  >  it doesn't get involved at all to do two users on one GPU scenarios.
>  >  >  all this stuff will happen with kernel modesetting and the drm before
>  >  >  we get the arbiter into shape.
>  >  >
>  >  >  the arbiter only matters for the *multiple* GPU case.
>  >  >
>  >  >  Dave.
>  >  >
>  >
>