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drm/i915/gen9: implement WaEnableSamplerGPGPUPreemptionSupport

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WaEnableSamplerGPGPUPreemptionSupport fixes a problem
related to mid thread pre-emption.

Signed-off-by: Tim Gore <tim.gore@intel.com>
Reviewed-by: Dave Gordon <david.s.gordon@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461077152-31899-1-git-send-email-tim.gore@intel.com
This commit is contained in:
Tim Gore 2016-04-19 15:45:52 +01:00 committed by Tvrtko Ursulin
parent 1034ce707b
commit bfd8ad4e4a
2 changed files with 5 additions and 3 deletions
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1
drivers/gpu/drm/i915/i915_reg.h
View file

@ -7180,6 +7180,7 @@ enum skl_disp_power_wells {
#define GEN9_HALF_SLICE_CHICKEN7 _MMIO(0xe194)
#define GEN9_ENABLE_YV12_BUGFIX (1<<4)
#define GEN9_ENABLE_GPGPU_PREEMPTION (1<<2)
/* Audio */
#define G4X_AUD_VID_DID _MMIO(dev_priv->info.display_mmio_offset + 0x62020)

7
drivers/gpu/drm/i915/intel_ringbuffer.c
View file

@ -959,9 +959,10 @@ static int gen9_init_workarounds(struct intel_engine_cs *engine)
}
/* WaEnableYV12BugFixInHalfSliceChicken7:skl,bxt */
if (IS_SKL_REVID(dev, SKL_REVID_C0, REVID_FOREVER) || IS_BROXTON(dev))
WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,
GEN9_ENABLE_YV12_BUGFIX);
/* WaEnableSamplerGPGPUPreemptionSupport:skl,bxt */
WA_SET_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN7,
GEN9_ENABLE_YV12_BUGFIX |
GEN9_ENABLE_GPGPU_PREEMPTION);
/* Wa4x4STCOptimizationDisable:skl,bxt */
/* WaDisablePartialResolveInVc:skl,bxt */