drm/i915/icl:Add Wa_1606682166

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Incorrect TDL's SSP address shift in SARB for 16:6 & 18:8 modes.
Disable the Sampler state prefetch functionality in the SARB by
programming 0xB000[30] to '1'. This is to be done at boot time
and the feature must remain disabled permanently.

Fixes flaky tex-mip-level-selection* piglit tests with Mesa i965
driver.

Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181004182939.7668-6-radhakrishna.sripada@intel.com

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Anuj Phogat 2018-10-04 11:29:39 -07:00 • committed by Mika Kuoppala

parent 0c7d2aedf5

commit 71ffd49cc9

2 changed files with 3 additions and 1 deletions

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1

drivers/gpu/drm/i915/i915_reg.h

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3

drivers/gpu/drm/i915/intel_workarounds.c

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