Re: [PATCH 6/8] drm/i915: change force wake order for GT read

Chris Wilson
2011-03-22T07:25:05Z

On Tue, 22 Mar 2011 09:27:51 +0800, Zhenyu Wang <zhenyuw@linux.intel.com> wrote:
> Just mean to follow the doc, it matches the sequence of RC6 enabling steps
> from GT PM programming doc, not sure if it's strictly required.

But as you point out, the docs do also outline the current method as well.
;-)

Meanwhile a better solution for _gen6_gt_wait_for_fifo() is desperately
sought. It is the new clflush. [Ok, most of that could be mitigated by
improving the ddx...]
-Chris

--
Chris Wilson, Intel Open Source Technology Centre