On 02/07/2019 15:30, Mika Kuoppala wrote:
Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx> writes:
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.
Didn't find more documentation either but I have asked
for the wa author for update.
I've filed an issue on the register definition (maybe a week ago), so
far no response.
Hopefully you get luckier ;)
-Lionel
v2: Use only one whitelist entry (Lionel)
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
Tested-by: Anuj Phogat <anuj.phogat@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
The register offsets are the same so we can't really do
harm with this so we go with the evidence,
Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_workarounds.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index b117583e38bb..a908d829d6bd 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1138,6 +1138,19 @@ 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:
--
2.21.0.392.gf8f6787159e
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