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| author | Ben Widawsky <ben@bwidawsk.net> | 2013-11-04 22:52:39 -0800 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-11-08 18:10:04 +0100 |
| commit | fd392b6003ae79c8abfb077be76e0a4b4cea8e3e (patch) | |
| tree | 5c36ea2dc70fc413e5bc84f249b134de61214c11 | |
| parent | 4afe8d3347d69af7bc606fafad134885ed1544e2 (diff) | |
| download | blackbird-obmc-linux-fd392b6003ae79c8abfb077be76e0a4b4cea8e3e.tar.gz blackbird-obmc-linux-fd392b6003ae79c8abfb077be76e0a4b4cea8e3e.zip | |
ddrm/i915/bdw: Disable centroid pixel perf optimization
BDW-A workaround
BDW Bug #1899532
v2: WARN on when not using preliminary HW support
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Jesse Barnes <jbarnes@virtuosugeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 4 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index b87945d5dceb..ffd103a5d472 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -5007,6 +5007,9 @@ #define HSW_ROW_CHICKEN3 0xe49c #define HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE (1 << 6) +#define HALF_SLICE_CHICKEN3 0xe184 +#define GEN8_CENTROID_PIXEL_OPT_DIS (1<<8) + #define G4X_AUD_VID_DID (dev_priv->info->display_mmio_offset + 0x62020) #define INTEL_AUDIO_DEVCL 0x808629FB #define INTEL_AUDIO_DEVBLC 0x80862801 diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 8249be5f83fc..e036ba06be99 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5286,6 +5286,10 @@ static void gen8_init_clock_gating(struct drm_device *dev) /* FIXME(BDW): Check all the w/a, some might only apply to * pre-production hw. */ + WARN(!i915_preliminary_hw_support, + "GEN8_CENTROID_PIXEL_OPT_DIS not be needed for production\n"); + I915_WRITE(HALF_SLICE_CHICKEN3, + _MASKED_BIT_ENABLE(GEN8_CENTROID_PIXEL_OPT_DIS)); I915_WRITE(GAMTARBMODE, _MASKED_BIT_ENABLE(ARB_MODE_BWGTLB_DISABLE)); /* WaSwitchSolVfFArbitrationPriority */ |
