Implements WaVSRefCountFullforceMissDisable as documented in the BSpec 3D workarounds chapter. Cc: Paulo Zanoni <przanoni at gmail.com> Signed-off-by: Ben Widawsky <ben at bwidawsk.net> --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_pm.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 a18218c..0c89cf5 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -741,6 +741,7 @@ #define GEN7_FF_TS_SCHED_HS0 (0x3<<16) #define GEN7_FF_TS_SCHED_LOAD_BALANCE (0x1<<16) #define GEN7_FF_TS_SCHED_HW (0x0<<16) /* Default */ +#define GEN7_FF_VS_REF_CNT_FFME (1 << 15) #define GEN7_FF_VS_SCHED_HS1 (0x5<<12) #define GEN7_FF_VS_SCHED_HS0 (0x3<<12) #define GEN7_FF_VS_SCHED_LOAD_BALANCE (0x1<<12) /* Default */ diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index c97714e..64d65f5 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3680,6 +3680,10 @@ static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv) reg |= GEN7_FF_VS_SCHED_HW; reg |= GEN7_FF_DS_SCHED_HW; + /* WaVSRefCountFullforceMissDisable */ + if (IS_HASWELL(dev_priv->dev)) + reg &= ~GEN7_FF_VS_REF_CNT_FFME; + I915_WRITE(GEN7_FF_THREAD_MODE, reg); } -- 1.8.1.1
