[OEM-5.6][PATCH 19/37] drm/i915/tgl: Add Wa_1409085225, Wa_14010229206

[Timo Aaltonen]

From: Matt Atwood <matthew.s.atwood at intel.com>

BugLink: https://bugs.launchpad.net/bugs/1868727

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>
Reviewed-by: Matt Roper <matthew.d.roper at intel.com>
Signed-off-by: Matt Atwood <matthew.s.atwood at intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200227220101.321671-3-jose.souza@intel.com
(cherry picked from drm-intel-next commit 52c2e4e6f12cb2261e6d430596d9884fd85c53df)
Signed-off-by: Timo Aaltonen <timo.aaltonen at canonical.com>
---
 drivers/gpu/drm/i915/gt/intel_workarounds.c | 6 ++++++
 drivers/gpu/drm/i915/i915_reg.h             | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 4704abda8744..900948e57d4e 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1356,6 +1356,12 @@ 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_masked_en(wal, GEN9_ROW_CHICKEN4, GEN12_DISABLE_TDL_PUSH);
 	}
 
 	if (IS_TIGERLAKE(i915)) {
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index fff785ef2960..57ab5608e657 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -9152,6 +9152,9 @@ 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)
 
-- 
2.25.1