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drm/i915/icl: whitelist PS_(DEPTH|INVOCATION)_COUNT

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The same tests failing on CFL+ platforms are also failing on ICL.
Documentation doesn't list the
WaAllowPMDepthAndInvocationCountAccessFromUMD workaround for ICL but
applying it fixes the same tests as CFL.

v2: Use only one whitelist entry (Lionel)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Tested-by: Anuj Phogat <anuj.phogat@gmail.com>
Cc: stable@vger.kernel.org # 6883eab27481: drm/i915: Support flags in whitlist WAs
Cc: stable@vger.kernel.org
Acked-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/20190628120720.21682-4-lionel.g.landwerlin@intel.com
(cherry picked from commit 3fe0107e45)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Lionel Landwerlin 2019-06-28 15:07:20 +03:00 committed by Jani Nikula
parent 6ce5bfe936
commit cf8f9aa1ed
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/i915/gt/intel_workarounds.c
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@ -1144,6 +1144,19 @@ static void icl_whitelist_build(struct intel_engine_cs *engine)
/* WaEnableStateCacheRedirectToCS:icl */
whitelist_reg(w, GEN9_SLICE_COMMON_ECO_CHICKEN1);
/*
* WaAllowPMDepthAndInvocationCountAccessFromUMD:icl
*
* This covers 4 register which are next to one another :
* - PS_INVOCATION_COUNT
* - PS_INVOCATION_COUNT_UDW
* - PS_DEPTH_COUNT
* - PS_DEPTH_COUNT_UDW
*/
whitelist_reg_ext(w, PS_INVOCATION_COUNT,
RING_FORCE_TO_NONPRIV_RD |
RING_FORCE_TO_NONPRIV_RANGE_4);
break;
case VIDEO_DECODE_CLASS: