From 1de4582f98db7eafd12695139aed7df6a0a0ff3a Mon Sep 17 00:00:00 2001 From: Nick Hoath Date: Thu, 5 Feb 2015 10:47:19 +0000 Subject: drm/i915/gen9: Implement WaDisableDgMirrorFixInHalfSliceChicken5 Move WaDisableDgMirrorFixInHalfSliceChicken5 to gen9_init_workarounds v2: Added stepping check v3: Removed unused register bitmap Signed-off-by: Nick Hoath [danvet: Bikesheds.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_ringbuffer.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c') diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index b869f1c68753..248db5157e02 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -882,6 +882,16 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring) WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE); + if (INTEL_REVID(dev) == SKL_REVID_A0) { + /* + * WaDisableDgMirrorFixInHalfSliceChicken5:skl + * This is a pre-production w/a. + */ + I915_WRITE(GEN9_HALF_SLICE_CHICKEN5, + I915_READ(GEN9_HALF_SLICE_CHICKEN5) & + ~GEN9_DG_MIRROR_FIX_ENABLE); + } + return 0; } -- cgit v1.2.2