[Intel-gfx] [for-CI-v2] drm/i915/mocs: Program MOCS for all engines on init

[Chris Wilson]

On Wed, Apr 13, 2016 at 03:03:25PM +0100, Chris Wilson wrote:
> From: Peter Antoine <peter.antoine at intel.com>
> 
> Allow for the MOCS to be programmed for all engines.
> Currently we program the MOCS when the first render batch
> goes through. This works on most platforms but fails on
> platforms that do not run a render batch early,
> i.e. headless servers. The patch now programs all initialised engines
> on init and the RCS is programmed again within the initial batch. This
> is done for predictable consistency with regards to the hardware
> context.
> 
> Hardware context loading sets the values of the MOCS for RCS
> and L3CC. Programming them from within the batch makes sure that
> the render context is valid, no matter what the previous state of
> the saved-context was.
> 
> v2: posted correct version to the mailing list.
> v3: moved programming to within engine->init_hw() (Chris Wilson)
> v4: code formatting and white-space changes. (Chris Wilson)
> 
> Testcase: igt/gem_mocs_settings
> Signed-off-by: Peter Antoine <peter.antoine at intel.com>
> Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

And pushed, finally. Thanks for the patch and test cases.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre