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[Dave Airlie]

On Fri, 2011-02-25 at 09:38 -0500, Phillip Susi wrote:
> On 2/24/2011 6:03 PM, Jerome Glisse wrote:
> > We don't have source of firmware, only nouveau is reverse engineering
> > the nvidia one.
> 
> Then where does the firmware come from?  I've been glancing at the AMD
> documentation for the R600 and I'd like to figure out why the firmware
> seems to be running in an infinite loop without ever halting, and
> driving the temperature of my card over 80 C, but I need the original
> assembly code for that.

How do you know its running in an infinite loop?

the firmware comes in blobs from AMD.

> 
> >> 2)  What is a "fence"?
> > 
> > It's what it means, it tell the cpu when the gpu reached some point in
> > command stream or resource usage so we know we can free or move memory
> > that was previously in use. Or simply to know when gpu is done doing
> > somethings.
> 
> So it is kind of like a barrier in the IO world?  You put a dozen
> commands into the pipeline and then a fence, and when they all complete,
> the fence gives you feedback so you know?

Pretty much yes.

Dave.