Revert to the legacy implementation.
v2: GEN7_ROW_CHICKEN2 is masked
v3:
- Rebased
- Renamed to Wa_2006611047
- A0 and B0 only
v4:
- Add spaces around '<<' (and fix the surrounding code as well)
- Mark the WA as pre-prod
v5: Rebased on top of the WA refactoring
v6: Added References (Mika)
v7: Fixed in B0
References: HSDES#2006611047
Signed-off-by: Oscar Mateo <oscar.ma...@intel.com>
Cc: Mika Kuoppala <mika.kuopp...@linux.intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 5 +++--
drivers/gpu/drm/i915/intel_workarounds.c | 7 +++++++
2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 6953419..4eb159f 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8328,8 +8328,9 @@ enum {
#define GEN7_ROW_CHICKEN2 _MMIO(0xe4f4)
#define GEN7_ROW_CHICKEN2_GT2 _MMIO(0xf4f4)
-#define DOP_CLOCK_GATING_DISABLE (1<<0)
-#define PUSH_CONSTANT_DEREF_DISABLE (1<<8)
+#define DOP_CLOCK_GATING_DISABLE (1 << 0)
+#define PUSH_CONSTANT_DEREF_DISABLE (1 << 8)
+#define GEN11_TDL_CLOCK_GATING_FIX_DISABLE (1 << 1)
#define HSW_ROW_CHICKEN3 _MMIO(0xe49c)
#define HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE (1 << 6)
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c
b/drivers/gpu/drm/i915/intel_workarounds.c
index cea5710..04aa885 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -463,6 +463,13 @@ static int icl_ctx_workarounds_init(struct
drm_i915_private *dev_priv)
*/
WA_SET_BIT_MASKED(ICL_HDC_MODE, HDC_FORCE_NON_COHERENT);
+ /* Wa_2006611047:icl (pre-prod)
+ * Formerly known as WaDisableImprovedTdlClkGating
+ */
+ if (IS_ICL_REVID(dev_priv, ICL_REVID_A0, ICL_REVID_A0))
+ WA_SET_BIT_MASKED(GEN7_ROW_CHICKEN2,
+ GEN11_TDL_CLOCK_GATING_FIX_DISABLE);
+
return 0;
}
--
1.9.1
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