The default GAPZ arbitrer priority value at power-on has been found
to be incorrect.
v2: Now renamed to Wa_1405543622
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 5 +++--
drivers/gpu/drm/i915/intel_pm.c | 6 ++++++
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 6cd2f2a..cd5da2b 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8196,8 +8196,9 @@ enum {
#define GEN8_DOP_CLOCK_GATE_GUC_ENABLE (1<<4)
#define GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE (1<<6)
-#define GEN8_GARBCNTL _MMIO(0xB004)
-#define GEN9_GAPS_TSV_CREDIT_DISABLE (1<<7)
+#define GEN8_GARBCNTL _MMIO(0xB004)
+#define GEN9_GAPS_TSV_CREDIT_DISABLE (1 << 7)
+#define GEN11_ARBITRATION_PRIO_ORDER_MASK (0x3f << 22)
/* IVYBRIDGE DPF */
#define GEN7_L3CDERRST1(slice) _MMIO(0xB008 + (slice) * 0x200) /* L3CD Error Status 1 */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 4f4c7ae..d1b98ae 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -8512,6 +8512,12 @@ static void icl_init_clock_gating(struct drm_i915_private *dev_priv)
/* WaPipelineFlushCoherentLines:icl */
I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
GEN8_LQSC_FLUSH_COHERENT_LINES));
+
+ /* Wa_1405543622:icl
+ * Formerly known as WaGAPZPriorityScheme
+ */
+ I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
+ GEN11_ARBITRATION_PRIO_ORDER_MASK));
}
static void cnl_init_clock_gating(struct drm_i915_private *dev_priv)
--
1.9.1
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