[Intel-gfx] [PATCH v3 0/3] drm/i915: Tune the GPU L3 SQ credits on CHV

[Imre Deak]

This is v3 of patchset [1]. It addresses comments from Ville and drops
the BXT change, since that was added separately in [2]. The place where
the WA is programmed in [2] is not ideal, since it's done now only when
an RCS context is submitted and isn't done for the other engines. My
solution was to program the WA during init_clock_gating(), but that has
the problem of losing the setting across a GPU reset. The way it's done
in [2] is probably still the better solution in practice.

[1]
https://lists.freedesktop.org/archives/intel-gfx/2016-April/093923.html
[2]
https://lists.freedesktop.org/archives/intel-gfx/2016-April/093480.html

Imre Deak (3):
  drm/i915/bdw: Add missing delay during L3 SQC credit programming
  drm/i915: Clean up L3 SQC register field definitions
  drm/i915/chv: Tune L3 SQC credits based on actual latencies

 drivers/gpu/drm/i915/i915_reg.h         | 10 ++++++--
 drivers/gpu/drm/i915/intel_pm.c         | 41 +++++++++++++++++++++++++--------
 drivers/gpu/drm/i915/intel_ringbuffer.c |  3 ++-
 3 files changed, 42 insertions(+), 12 deletions(-)

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2.5.0