From a75f36283d12d13aa278abce3a1bb6662e28fcfb Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Sat, 2 Nov 2013 21:07:59 -0700 Subject: [PATCH] drm/i915/bdw: conservative SBE VUE cache mode Hold vertex data in cache until last reference BDW-A workaround Signed-off-by: Ben Widawsky Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_reg.h | 2 ++ drivers/gpu/drm/i915/intel_pm.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index c0b398572c2a..e1a1bb71896a 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4133,6 +4133,8 @@ /* GEN7 chicken */ #define GEN7_COMMON_SLICE_CHICKEN1 0x7010 # define GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC ((1<<10) | (1<<26)) +#define COMMON_SLICE_CHICKEN2 0x7014 +# define GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE (1<<0) #define GEN7_L3CNTLREG1 0xB01C #define GEN7_WA_FOR_GEN7_L3_CONTROL 0x3C4FFF8C diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 5dceb56f6ceb..ccd1b88bc24a 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5297,6 +5297,9 @@ static void gen8_init_clock_gating(struct drm_device *dev) I915_WRITE(_3D_CHICKEN3, _3D_CHICKEN_SDE_LIMIT_FIFO_POLY_DEPTH(2)); + I915_WRITE(COMMON_SLICE_CHICKEN2, + _MASKED_BIT_ENABLE(GEN8_CSC2_SBE_VUE_CACHE_CONSERVATIVE)); + /* WaSwitchSolVfFArbitrationPriority */ I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); -- 2.30.2