Re: [Intel-gfx] [PATCH 2/4] drm/i915: restrict unclaimed register checking

2015-09-04 Thread Zanoni, Paulo R
Em Sex, 2015-09-04 às 09:53 +0300, Mika Kuoppala escreveu: > Paulo Zanoni writes: > > > The unclaimed register bit is only triggered when someone touches > > the > > specified register range. > > > > I got the impression that we get the unclaimed access also > for

Re: [Intel-gfx] [PATCH 2/4] drm/i915: restrict unclaimed register checking

2015-09-04 Thread Ville Syrjälä
On Fri, Sep 04, 2015 at 01:38:07PM +, Zanoni, Paulo R wrote: > Em Sex, 2015-09-04 às 09:53 +0300, Mika Kuoppala escreveu: > > Paulo Zanoni writes: > > > > > The unclaimed register bit is only triggered when someone touches > > > the > > > specified register range.

Re: [Intel-gfx] [PATCH 2/4] drm/i915: restrict unclaimed register checking

2015-09-04 Thread Mika Kuoppala
Paulo Zanoni writes: > The unclaimed register bit is only triggered when someone touches the > specified register range. > I got the impression that we get the unclaimed access also for other ranges, if they are powered down during access? -Mika > For the normal use

[Intel-gfx] [PATCH 2/4] drm/i915: restrict unclaimed register checking

2015-09-03 Thread Paulo Zanoni
The unclaimed register bit is only triggered when someone touches the specified register range. For the normal use case (with i915.mmio_debug=0), this commit will avoid the extra __raw_i915_read32() call for every register outside the specified range, at the expense of a few additional "if"