From: Damien Lespiau Date: Mon, 9 Feb 2015 19:33:20 +0000 (+0000) Subject: drm/i915/skl: Implement WaDisableChickenBitTSGBarrierAckForFFSliceCS X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=2caa3b260aa6a3d015352c07d1bce1461825fa6c;p=linux-beck.git drm/i915/skl: Implement WaDisableChickenBitTSGBarrierAckForFFSliceCS Signed-off-by: Damien Lespiau Reviewed-by: Nick Hoath Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 75227009d0bb..ecc14f558744 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -5236,6 +5236,9 @@ enum skl_disp_power_wells { #define HSW_NDE_RSTWRN_OPT 0x46408 #define RESET_PCH_HANDSHAKE_ENABLE (1<<4) +#define FF_SLICE_CS_CHICKEN2 0x02e4 +#define GEN9_TSG_BARRIER_ACK_DISABLE (1<<8) + /* GEN7 chicken */ #define GEN7_COMMON_SLICE_CHICKEN1 0x7010 # define GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC ((1<<10) | (1<<26)) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index a2b9c3e213f9..325f640c16c4 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -66,11 +66,16 @@ static void skl_init_clock_gating(struct drm_device *dev) GEN8_SDEUNIT_CLOCK_GATE_DISABLE); } - if (INTEL_REVID(dev) <= SKL_REVID_D0) + if (INTEL_REVID(dev) <= SKL_REVID_D0) { /* WaDisableHDCInvalidation:skl */ I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) | BDW_DISABLE_HDC_INVALIDATION); + /* WaDisableChickenBitTSGBarrierAckForFFSliceCS:skl */ + I915_WRITE(FF_SLICE_CS_CHICKEN2, + I915_READ(FF_SLICE_CS_CHICKEN2) | + GEN9_TSG_BARRIER_ACK_DISABLE); + } if (INTEL_REVID(dev) <= SKL_REVID_E0) /* WaDisableLSQCROPERFforOCL:skl */