[Intel-gfx] [PATCH 1/2] drm/i915/dg2: Add Wa_15010599737

[Matt Roper]

This workaround may need to be extended to other platforms soon, but for
now it's marked as DG2-specific.

Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
---
 drivers/gpu/drm/i915/gt/intel_gt_regs.h     | 3 +++
 drivers/gpu/drm/i915/gt/intel_workarounds.c | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
index e6bb24dc7b99..60d6eb5f245b 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
@@ -371,6 +371,9 @@
 #define GEN9_WM_CHICKEN3			_MMIO(0x5588)
 #define   GEN9_FACTOR_IN_CLR_VAL_HIZ		(1 << 9)
 
+#define CHICKEN_RASTER_1			_MMIO(0x6204)
+#define   DIS_SF_ROUND_NEAREST_EVEN		REG_BIT(8)
+
 #define VFLSKPD					_MMIO(0x62a8)
 #define   DIS_OVER_FETCH_CACHE			REG_BIT(1)
 #define   DIS_MULT_MISS_RD_SQUASH		REG_BIT(0)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index dcc1ee392c0d..e8111fce56d0 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -689,6 +689,9 @@ static void dg2_ctx_workarounds_init(struct intel_engine_cs *engine,
 	if (IS_DG2_GRAPHICS_STEP(engine->i915, G10, STEP_B0, STEP_FOREVER) ||
 		IS_DG2_G11(engine->i915) || IS_DG2_G12(engine->i915))
 		wa_masked_field_set(wal, VF_PREEMPTION, PREEMPTION_VERTEX_COUNT, 0x4000);
+
+	/* Wa_15010599737:dg2 */
+	wa_masked_en(wal, CHICKEN_RASTER_1, DIS_SF_ROUND_NEAREST_EVEN);
 }
 
 static void fakewa_disable_nestedbb_mode(struct intel_engine_cs *engine,
-- 
2.36.1