[Intel-gfx] [PATCH] drm/i915/tgl: Add Wa_1409085225, Wa_14010229206

[Matt Atwood]

Disable Push Constant buffer addition for TGL.

v2: typos, add additional Wa reference
v3: use REG_BIT macro, move to rcs_engine_wa_init, clean up commit
message.

Bspec: 52890
Cc: Rafael Antognolli <rafael.antognolli at intel.com>
Cc: Matt Roper <matthew.d.roper at intel.com>
Signed-off-by: Matt Atwood <matthew.s.atwood at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_workarounds.c | 5 +++++
 drivers/gpu/drm/i915/i915_reg.h             | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 7cc8a7fc53c7..5db9a9fa9ca5 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1334,6 +1334,11 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 		wa_masked_en(wal,
 			     GEN7_ROW_CHICKEN2,
 			     GEN12_DISABLE_EARLY_READ);
+		/*
+		* Wa_1409085225:tgl
+		* Wa_14010229206:tgl
+		*/
+		WA_SET_BIT_MASKED(GEN9_ROW_CHICKEN4, GEN12_DISABLE_TDL_PUSH);
 	}
 
 	if (IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0)) {
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index b09c1d6dc0aa..4d6342a2883e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -9153,6 +9153,9 @@ enum {
 #define   PUSH_CONSTANT_DEREF_DISABLE	(1 << 8)
 #define   GEN11_TDL_CLOCK_GATING_FIX_DISABLE	(1 << 1)
 
+#define GEN9_ROW_CHICKEN4		_MMIO(0xe48c)
+#define  GEN12_DISABLE_TDL_PUSH		REG_BIT(9)
+
 #define HSW_ROW_CHICKEN3		_MMIO(0xe49c)
 #define  HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE    (1 << 6)
 
-- 
2.21.1