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-rw-r--r--drivers/gpu/drm/i915/i915_reg.h1
-rw-r--r--drivers/gpu/drm/i915/intel_ringbuffer.c9
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index ed887cfc47f1..c51e7e909457 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5998,6 +5998,7 @@ enum skl_disp_power_wells {
#define FF_SLICE_CS_CHICKEN2 _MMIO(0x20e4)
#define GEN9_TSG_BARRIER_ACK_DISABLE (1<<8)
+#define GEN9_CS_DEBUG_MODE1 _MMIO(0x20ec)
#define GEN8_CS_CHICKEN1 _MMIO(0x2580)
/* GEN7 chicken */
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 62f535c1b78e..a99f8340fb47 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -1133,6 +1133,15 @@ static int bxt_init_workarounds(struct intel_engine_cs *ring)
GEN7_SBE_SS_CACHE_DISPATCH_PORT_SHARING_DISABLE);
}
+ /* WaDisableObjectLevelPreemptionForTrifanOrPolygon:bxt */
+ /* WaDisableObjectLevelPreemptionForInstancedDraw:bxt */
+ /* WaDisableObjectLevelPreemtionForInstanceId:bxt */
+ if (IS_BXT_REVID(dev, 0, BXT_REVID_A1)) {
+ ret = wa_ring_whitelist_reg(ring, GEN9_CS_DEBUG_MODE1);
+ if (ret)
+ return ret;
+ }
+
return 0;
}