On Wed, Dec 09, 2015 at 05:01:38PM +0200, Mika Kuoppala wrote:
> Access the unclaimed reg detection register through
> one helper which also does cleanup. Note that we now access
> the register only if the platform has the actual non claimed access bit.
> This prevents needlessly reading the register with older gens when
> debug_mmio > 0.
> 
> Cc: Chris Wilson <[email protected]>
> Cc: Paulo Zanoni <[email protected]>
> Signed-off-by: Mika Kuoppala <[email protected]>
> ---
>  drivers/gpu/drm/i915/intel_uncore.c | 34 ++++++++++++++++++++++------------
>  1 file changed, 22 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_uncore.c 
> b/drivers/gpu/drm/i915/intel_uncore.c
> index c2358ba..9d672f7 100644
> --- a/drivers/gpu/drm/i915/intel_uncore.c
> +++ b/drivers/gpu/drm/i915/intel_uncore.c
> @@ -334,13 +334,30 @@ static void intel_uncore_ellc_detect(struct drm_device 
> *dev)
>       }
>  }
>  
> +static bool
> +unclaimed_reg_access(struct drm_i915_private *dev_priv)

check_unclaimed_mmio() otherwise the verb here is "access" and the
function says "access this register in an unclaimed manner".
Or perhaps detect_unclaimed_mmio() would be closer to surrounding usage.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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