drm/i915: Implement Wa_1607090982

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SIMD16 with Src0 scalar might conflict between Src1/Src2 and cause
GRF read issue. Workaround this issue by setting bit 14 in 0xe4f4
which will disable early read/src swap of Src0.

Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20200207155138.30978-2-mika.kuoppala@linux.intel.com

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Mika Kuoppala 2020-02-07 17:51:38 +02:00 • committed by Chris Wilson

parent 561db8296d

commit 0db1a5f870

2 changed files with 5 additions and 0 deletions

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3

drivers/gpu/drm/i915/gt/intel_workarounds.c

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2

drivers/gpu/drm/i915/i915_reg.h

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