On Fri, Mar 14, 2014 at 07:40:30PM +0100, Daniel Vetter wrote:
> On Fri, Mar 14, 2014 at 09:58:06AM -0700, Ben Widawsky wrote:
> > The preliminary HW support check is no longer needed, and the
> > calculation is simplified while here.
> >
> > Reported-by: David Woodhouse <David.Woodhouse@xxxxxxxxx>
> > Signed-off-by: Ben Widawsky <ben@xxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/i915_gem_gtt.c | 9 +--------
> > 1 file changed, 1 insertion(+), 8 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
> > index 40a2b36..694112a 100644
> > --- a/drivers/gpu/drm/i915/i915_gem_gtt.c
> > +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
> > @@ -1250,14 +1250,7 @@ static inline unsigned int gen8_get_total_gtt_size(u16 bdw_gmch_ctl)
> > {
> > bdw_gmch_ctl >>= BDW_GMCH_GGMS_SHIFT;
> > bdw_gmch_ctl &= BDW_GMCH_GGMS_MASK;
> > - if (bdw_gmch_ctl)
> > - bdw_gmch_ctl = 1 << bdw_gmch_ctl;
> > - if (bdw_gmch_ctl > 4) {
> > - WARN_ON(!i915_preliminary_hw_support);
> > - return 4<<20;
> > - }
> > -
> > - return bdw_gmch_ctl << 20;
> > + return 1 << (bdw_gmch_ctl + 20);
>
> I don't have this in my tree, and it seems to never have existed in
> upstream ...
>
> /me is confused
>
> Cheers, Daniel
>
This was based off of linus master, since I assumed that is what David
was using. Honestly, I hadn't looked at our Intel trees. Maybe we're
good here already.
--
Ben Widawsky, Intel Open Source Technology Center
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