Chris Wilson chris@chris-wilson.co.uk writes:
From: Kenneth Graunke kenneth@whitecape.org
The Demand Prefetch workaround (binding table prefetching) only applies to Icelake A0/B0. But the Sampler Prefetch workaround needs to be applied to all Gen11 steppings, according to a programming note in the SARCHKMD documentation.
Using the Intel Gallium driver, I have seen intermittent failures in the dEQP-GLES31.functional.copy_image.non_compressed.* tests. After applying this workaround, the tests reliably pass.
v2: Remove the overlap with a pre-production w/a
BSpec: 9663 Signed-off-by: Kenneth Graunke kenneth@whitecape.org Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Cc: stable@vger.kernel.org
Reviewed-by: Mika Kuoppala mika.kuoppala@linux.intel.com
drivers/gpu/drm/i915/gt/intel_workarounds.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index c70445adfb02..993804d09517 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -1252,8 +1252,12 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) if (IS_ICL_REVID(i915, ICL_REVID_A0, ICL_REVID_B0)) wa_write_or(wal, GEN7_SARCHKMD,
GEN7_DISABLE_DEMAND_PREFETCH |GEN7_DISABLE_SAMPLER_PREFETCH);
GEN7_DISABLE_DEMAND_PREFETCH);/* Wa_1606682166:icl */wa_write_or(wal,GEN7_SARCHKMD,GEN7_DISABLE_SAMPLER_PREFETCH);if (IS_GEN_RANGE(i915, 9, 11)) { -- 2.20.1
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