Revert to the legacy implementation.
v2: GEN7_ROW_CHICKEN2 is masked
v3:
- Rebased
- Renamed to Wa_2006611047
- A0 and B0 only
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_engine_cs.c | 7 +++++++
2 files changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index ee179c3..ca12316 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8251,6 +8251,7 @@ enum {
#define GEN7_ROW_CHICKEN2_GT2 _MMIO(0xf4f4)
#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_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index ba8c137..0f13e1a 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -1487,6 +1487,13 @@ static int icl_init_workarounds(struct intel_engine_cs *engine)
*/
WA_SET_BIT_MASKED(ICL_HDC_CHICKEN0, HDC_FORCE_NON_COHERENT);
+ /* Wa_2006611047:icl
+ * Formerly known as WaDisableImprovedTdlClkGating
+ */
+ if (IS_ICL_REVID(dev_priv, ICL_REVID_A0, ICL_REVID_B0))
+ WA_SET_BIT_MASKED(GEN7_ROW_CHICKEN2,
+ GEN11_TDL_CLOCK_GATING_FIX_DISABLE);
+
return 0;
}
--
1.9.1
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