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| author | Deepak S <deepak.s@linux.intel.com> | 2015-04-16 08:51:28 +0530 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2015-04-28 17:31:29 +0300 |
| commit | a04f90a33fab74789b91fc9739999012f11022d1 (patch) | |
| tree | fcbdd436aaaf91d4692a04c8cbd969dc54467fd3 /drivers/gpu/drm/i915/intel_uncore.c | |
| parent | b787f68c36d49bb1d9236f403813641efa74a031 (diff) | |
| download | blackbird-obmc-linux-a04f90a33fab74789b91fc9739999012f11022d1.tar.gz blackbird-obmc-linux-a04f90a33fab74789b91fc9739999012f11022d1.zip | |
drm/i915/chv: Implement WaDisableShadowRegForCpd
This WA is avoid problem between shadow vs wake FIFO unload
problem during CPD/RC6 transactions on CHV.
v2: Define individual bits GTFIFOCTL (Ville)
v3: move WA to uncore_early_sanitize (ville)
Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[Jani: fixed some whitespace issues while applying]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_uncore.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_uncore.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index ab5cc94588e1..ff2a74651dd4 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -360,6 +360,14 @@ static void __intel_uncore_early_sanitize(struct drm_device *dev, __raw_i915_write32(dev_priv, GTFIFODBG, __raw_i915_read32(dev_priv, GTFIFODBG)); + /* WaDisableShadowRegForCpd:chv */ + if (IS_CHERRYVIEW(dev)) { + __raw_i915_write32(dev_priv, GTFIFOCTL, + __raw_i915_read32(dev_priv, GTFIFOCTL) | + GT_FIFO_CTL_BLOCK_ALL_POLICY_STALL | + GT_FIFO_CTL_RC6_POLICY_STALL); + } + intel_uncore_forcewake_reset(dev, restore_forcewake); } |
