[Intel-gfx] [PATCH] drm/i915: add multi-threaded forcewake support
keithp at keithp.com
Fri Nov 18 15:27:14 PST 2011
On Fri, 18 Nov 2011 14:48:39 -0800, Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> So the ECOBUS reg *is* in the GT power well. Which means in order to
> read it we have to disable RC6 altogether, forcibly, using the 0xa090
> reg, set up force wake, then re-enable RC6.
Not surprising the ECOBUS is in the well; we really only need to read it
when rc6 is getting set up, so it'll be disabled at that point.
But, unless I'm confused, ECOBUS doesn't have any useful information in
# intel_reg_read 0xa090
0xA090 : 0x0
# intel_reg_read 0xa080
0xA080 : 0x0
keith.packard at intel.com
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