From: Ben Widawsky <ben@xxxxxxxxxxxx> BDW-A workaround BDW Bug #1899155 Signed-off-by: Ben Widawsky <ben@xxxxxxxxxxxx> --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_pm.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 3ae3751..9d194b6 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -777,6 +777,7 @@ #define _3D_CHICKEN3 0x02090 #define _3D_CHICKEN_SF_DISABLE_OBJEND_CULL (1 << 10) #define _3D_CHICKEN3_SF_DISABLE_FASTCLIP_CULL (1 << 5) +#define _3D_CHICKEN_SDE_LIMIT_FIFO_POLY_DEPTH(x) ((x)<<1) #define MI_MODE 0x0209c # define VS_TIMER_DISPATCH (1 << 6) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 48ffe54..b3d709c 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5292,6 +5292,9 @@ static void gen8_init_clock_gating(struct drm_device *dev) _MASKED_BIT_ENABLE(GEN8_SAMPLER_POWER_BYPASS_DIS)); I915_WRITE(GAMTARBMODE, _MASKED_BIT_ENABLE(ARB_MODE_BWGTLB_DISABLE)); + I915_WRITE(_3D_CHICKEN3, + _3D_CHICKEN_SDE_LIMIT_FIFO_POLY_DEPTH(2)); + /* WaSwitchSolVfFArbitrationPriority */ I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | HSW_ECOCHK_ARB_PRIO_SOL); -- 1.8.4.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
