[Intel-gfx] [PATCH 03/10] drm/i915: clear the FPGA_DBG_RM_NOCLAIM bit at driver init

[Ben Widawsky]

On Thu, 14 Feb 2013 18:26:59 -0200
Paulo Zanoni <przanoni at gmail.com> wrote:

> Hi
> 
> 2013/2/9 Ben Widawsky <ben at bwidawsk.net>:
> > On Fri,  8 Feb 2013 17:35:14 -0200
> > Paulo Zanoni <przanoni at gmail.com> wrote:
> >
> >> From: Paulo Zanoni <paulo.r.zanoni at intel.com>
> >>
> >> Otherwise, if the BIOS did anything wrong, our first
> >> I915_{WRITE,READ} will give us "unclaimed register"  messages.
> >>
> >> V2: Even earlier.
> >>
> >> Bugzilla: http://bugs.freedesktop.org/show_bug.cgi?id=58897
> >> Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
> >
> > I really wish we were allowed to call Haswell something like
> > gen7.x, so we can do INTEL_INFO(dev)->gen > 7
> 
> Like gen 70 and 75?

Yeah, but that's not your problem or fault.
> 
> >
> > Also, I would have cleared all the bits in the register, not just
> > NOCLAIM.
> 
> I'm not so sure, the other bits have completely different purposes,
> unrelated with the "unclaimed registers". I don't think it's a good
> idea to zero bits that have nothing to do with the purpose of the
> code.

I think doing that is a separate patch, and it goes along with the
"we don't care what errors BIOS induced" philosophy IMO.

> 
> >
> > Either way it's
> > Reviewed-by: Ben Widawsky <ben at bwidawsk.net>
> 
> Thanks for the review :)
> 
> > [snip]
> 
> 
>