diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 8c1d17ac7d4c..6adc7f110568 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -814,6 +814,16 @@ static int gen8_init_workarounds(struct intel_engine_cs *ring) WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN, PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE); + /* From the Haswell PRM, Command Reference: Registers, CACHE_MODE_0: + * "The Hierarchical Z RAW Stall Optimization allows non-overlapping + * polygons in the same 8x4 pixel/sample area to be processed without + * stalling waiting for the earlier ones to write to Hierarchical Z + * buffer." + * + * This optimization is off by default for BDW and CHV; turn it on. + */ + WA_CLR_BIT_MASKED(CACHE_MODE_0_GEN7, HIZ_RAW_STALL_OPT_DISABLE); + return 0; } @@ -851,16 +861,6 @@ static int bdw_init_workarounds(struct intel_engine_cs *ring) /* WaDisableFenceDestinationToSLM:bdw (pre-prod) */ (IS_BDW_GT3(dev) ? HDC_FENCE_DEST_SLM_DISABLE : 0)); - /* From the Haswell PRM, Command Reference: Registers, CACHE_MODE_0: - * "The Hierarchical Z RAW Stall Optimization allows non-overlapping - * polygons in the same 8x4 pixel/sample area to be processed without - * stalling waiting for the earlier ones to write to Hierarchical Z - * buffer." - * - * This optimization is off by default for Broadwell; turn it on. - */ - WA_CLR_BIT_MASKED(CACHE_MODE_0_GEN7, HIZ_RAW_STALL_OPT_DISABLE); - /* Wa4x4STCOptimizationDisable:bdw */ WA_SET_BIT_MASKED(CACHE_MODE_1, GEN8_4x4_STC_OPTIMIZATION_DISABLE); @@ -903,11 +903,6 @@ static int chv_init_workarounds(struct intel_engine_cs *ring) HDC_FORCE_NON_COHERENT | HDC_DONOT_FETCH_MEM_WHEN_MASKED); - /* According to the CACHE_MODE_0 default value documentation, some - * CHV platforms disable this optimization by default. Turn it on. - */ - WA_CLR_BIT_MASKED(CACHE_MODE_0_GEN7, HIZ_RAW_STALL_OPT_DISABLE); - /* Wa4x4STCOptimizationDisable:chv */ WA_SET_BIT_MASKED(CACHE_MODE_1, GEN8_4x4_STC_OPTIMIZATION_DISABLE); |