tree 5d85037bfce8f91e21b03dff73453b3cbf733610
parent 4bd0a25d9be2963a15e16126022214e88580103f
author Mika Kuoppala <mika.kuoppala@linux.intel.com> 1450201542 +0200
committer Mika Kuoppala <mika.kuoppala@intel.com> 1452251653 +0200

drm/i915: Add non claimed mmio checking for vlv/chv

Imre mentioned that chv might also have capability to
track unclaimed mmio accesses. Ville added that
both chv and vlv has this capability and he had already
made this way back [1]. Mimic what Ville's patch does
but adapt on top of less frequent mmio accesses by
omitting checking always on reg writes.

This patch is untested as of now.

v2: overflow handling and posting omitted (Ville)

References: [1] http://lists.freedesktop.org/archives/intel-gfx/2013-May/027599.html
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450201542-22918-1-git-send-email-mika.kuoppala@intel.com