On Thu, 2002-05-30 at 15:37, Keith Whitwell wrote:
> Michel Dänzer wrote:
> 
> >>>Right, but do we check if there is room before feeding the FIFO
> >>>directly?
> >>>
> >>No, not from the kernel module.  I think this has to change.  But the only 
> >>places where we potentially do it directly are where we issue RADEON_WRITE's 
> >>-- I don't think we have to check just to add stuff to the ring.
> >>
> > 
> > Agreed. Are there direct register writes while the CP is running? If
> > yes, are they necessary? (I'm at work and don't have time to check
> > myself right now, sorry)
> 
> The main one is to update the ring tail pointer.

But does that go through the FIFO? Would kind of defeat the purpose of
the ring...


-- 
Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast

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