Signed-off-by: Damien Lespiau <damien.lespiau@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_ringbuffer.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index ae8ea42..47bc4e2 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5253,6 +5253,7 @@ enum punit_power_well {
/* GEN8 chicken */
#define HDC_CHICKEN0 0x7300
+#define HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT (1<<5)
#define HDC_FORCE_NON_COHERENT (1<<4)
#define HDC_DONOT_FETCH_MEM_WHEN_MASKED (1<<11)
#define HDC_FENCE_DEST_SLM_DISABLE (1<<14)
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 36dad33..d393026 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -790,9 +790,11 @@ static int bdw_init_workarounds(struct intel_engine_cs *ring)
*/
/* WaForceEnableNonCoherent:bdw */
/* WaHdcDisableFetchWhenMasked:bdw */
+ /* WaForceContextSaveRestoreNonCoherent:bdw */
/* WaDisableFenceDestinationToSLM:bdw (GT3 pre-production) */
WA_SET_BIT_MASKED(HDC_CHICKEN0,
HDC_FORCE_NON_COHERENT |
+ HDC_FORCE_CONTEXT_SAVE_RESTORE_NON_COHERENT |
HDC_DONOT_FETCH_MEM_WHEN_MASKED |
(IS_BDW_GT3(dev) ? HDC_FENCE_DEST_SLM_DISABLE : 0));
--
1.8.3.1
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