On 09/02/2015 19:33, Damien Lespiau wrote:
Signed-off-by: Damien Lespiau <damien.lespiau@xxxxxxxxx>
Reviewed-by: Nick Hoath <nicholas.hoath@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_ringbuffer.c | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 610fcd4..090ddd7 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -6216,6 +6216,7 @@ enum skl_disp_power_wells {
#define GEN9_HALF_SLICE_CHICKEN5 0xe188
#define GEN9_DG_MIRROR_FIX_ENABLE (1<<5)
+#define GEN9_CCS_TLB_PREFETCH_ENABLE (1<<3)
#define GEN8_ROW_CHICKEN 0xe4f0
#define PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE (1<<8)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index db83baf..57432ca 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -928,6 +928,10 @@ static int gen9_init_workarounds(struct intel_engine_cs *ring)
/* WaDisablePartialResolveInVc:skl */
WA_SET_BIT_MASKED(CACHE_MODE_1, GEN9_PARTIAL_RESOLVE_IN_VC_DISABLE);
+ /* WaCcsTlbPrefetchDisable:skl */
+ WA_CLR_BIT_MASKED(GEN9_HALF_SLICE_CHICKEN5,
+ GEN9_CCS_TLB_PREFETCH_ENABLE);
+
return 0;
}
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