[Intel-gfx] [PATCH 1/7] drm/i915: Consolidate unclaimed mmio detection

Mika Kuoppala mika.kuoppala at linux.intel.com
Tue Dec 15 06:40:22 PST 2015

Chris Wilson <chris at chris-wilson.co.uk> writes:

> On Tue, Dec 15, 2015 at 04:25:06PM +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 reading the register with gens that
>> doesn't have the register or the unclaimed bit,
>> when debug_mmio > 0.
>> Note that we post after clearing the bit. This makes sure
>> that the next unclaimed write access would get detected
>> also if it happened right after clearing, and not fold
>> into the previous detection.
> I didn't like 6 (adding checks to rpm get/put), and I didn't see the
> removal of the check from the interrupt? Or adding it to the modesetting
> code?
> Did I just miss those?

They should be included in 4/7.

> The other patches (1-5?) (aside from adding chv as I haven't validated the
> registers myself) are
> Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
> -Chris
> -- 
> Chris Wilson, Intel Open Source Technology Centre

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