Disables Atomic-chaining of Typed Writes.
BSpec: 54040
Signed-off-by: Shekhar Chauhan <shekhar.chauhan@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_gt_regs.h | 2 ++
drivers/gpu/drm/i915/gt/intel_workarounds.c | 8 ++++++++
2 files changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
index 0e4c638fcbbf..82b533aa0c03 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h
@@ -1218,6 +1218,8 @@
#define XEHP_HDC_CHICKEN0 MCR_REG(0xe5f0)
#define LSC_L1_FLUSH_CTL_3D_DATAPORT_FLUSH_EVENTS_MASK REG_GENMASK(13, 11)
+#define ATOMIC_CHAINING_TYPED_WRITES REG_BIT(3)
+
#define ICL_HDC_MODE MCR_REG(0xe5f4)
#define EU_PERF_CNTL2 PERF_REG(0xe658)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 864d41bcf6bb..d853f228fabd 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -2327,6 +2327,14 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
LSC_L1_FLUSH_CTL_3D_DATAPORT_FLUSH_EVENTS_MASK);
}
+ if (IS_GFX_GT_IP_RANGE(gt, IP_VER(12, 70), IP_VER(12, 71)) ||
+ IS_DG2(i915)) {
+ /* Wa_14015150844 */
+ wa_mcr_add(wal, XEHP_HDC_CHICKEN0, 0,
+ _MASKED_BIT_DISABLE(ATOMIC_CHAINING_TYPED_WRITES),
+ 0, true);
+ }
+
if (IS_DG2_G11(i915) || IS_DG2_G10(i915)) {
/* Wa_22014600077:dg2 */
wa_mcr_add(wal, GEN10_CACHE_MODE_SS, 0,
--
2.34.1
