drm/i915/mtl: Add Wa_14017856879

[ Upstream commit 4b51210 ] Wa_14017856879 implementation for mtl. Bspec: 46046 Signed-off-by: Haridhar Kalvala <haridhar.kalvala@intel.com> Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com> Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230404173220.3175577-1-haridhar.kalvala@intel.com Stable-dep-of: 81900e3 ("drm/i915: disable sampler indirect state in bindless heap") Signed-off-by: Sasha Levin <sashal@kernel.org>
xanmod · May 17, 2023 · 20e1388 · 20e1388
1 parent 6a3752f
commit 20e1388
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diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
@@ -1172,7 +1172,9 @@
 #define   THREAD_EX_ARB_MODE_RR_AFTER_DEP	REG_FIELD_PREP(THREAD_EX_ARB_MODE, 0x2)
 
 #define HSW_ROW_CHICKEN3			_MMIO(0xe49c)
+#define GEN9_ROW_CHICKEN3			MCR_REG(0xe49c)
 #define   HSW_ROW_CHICKEN3_L3_GLOBAL_ATOMICS_DISABLE	(1 << 6)
+#define   MTL_DISABLE_FIX_FOR_EOT_FLUSH		REG_BIT(9)
 
 #define GEN8_ROW_CHICKEN			MCR_REG(0xe4f0)
 #define   FLOW_CONTROL_ENABLE			REG_BIT(15)

diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -3015,6 +3015,11 @@ general_render_compute_wa_init(struct intel_engine_cs *engine, struct i915_wa_li
 
 	add_render_compute_tuning_settings(i915, wal);
 
+	if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_B0, STEP_FOREVER) ||
+	    IS_MTL_GRAPHICS_STEP(i915, P, STEP_B0, STEP_FOREVER))
+		/* Wa_14017856879 */
+		wa_mcr_masked_en(wal, GEN9_ROW_CHICKEN3, MTL_DISABLE_FIX_FOR_EOT_FLUSH);
+
 	if (IS_MTL_GRAPHICS_STEP(i915, M, STEP_A0, STEP_B0) ||
 	    IS_MTL_GRAPHICS_STEP(i915, P, STEP_A0, STEP_B0))
 		/*