These w/a were recently identified while debugging another issue,
+WaClearFlowControlGpgpuContextSave:chv
+Wa4x4STCOptimizationDisable:chv
For: VIZ-4090
Change-Id: I08d2176dec609396c3a7c2e48b2413e233799fc4
Signed-off-by: Arun Siluvery <arun.siluv...@linux.intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index dc03fac..7c7663f 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6131,6 +6131,7 @@ enum punit_power_well {
#define GEN9_DG_MIRROR_FIX_ENABLE (1<<5)
#define GEN8_ROW_CHICKEN 0xe4f0
+#define FLOW_CONTROL_ENABLE (1<<15)
#define PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE (1<<8)
#define STALL_DOP_GATING_DISABLE (1<<5)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c
b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 79b4ca5..525c9bf 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -796,8 +796,10 @@ static int chv_init_workarounds(struct intel_engine_cs
*ring)
/* WaDisablePartialInstShootdown:chv */
/* WaDisableThreadStallDopClockGating:chv */
+ /* WaClearFlowControlGpgpuContextSave:chv */
WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN,
PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE |
+ FLOW_CONTROL_ENABLE |
STALL_DOP_GATING_DISABLE);
/* Use Force Non-Coherent whenever executing a 3D context. This is a
@@ -810,6 +812,9 @@ static int chv_init_workarounds(struct intel_engine_cs
*ring)
HDC_FORCE_NON_COHERENT |
HDC_DONOT_FETCH_MEM_WHEN_MASKED);
+ /* Wa4x4STCOptimizationDisable:chv */
+ WA_SET_BIT_MASKED(CACHE_MODE_1, GEN8_4x4_STC_OPTIMIZATION_DISABLE);
+
return 0;
}
--
2.1.2
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