Re: [PATCH v3 11/22] drm/i915/cnl: Move GT and Display workarounds from init_clock_gating

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On 10/17/2017 05:52 AM, Chris Wilson wrote:
Quoting Oscar Mateo (2017-10-13 21:54:05)
To their rightful place inside intel_workarounds.c

Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
  static int cnl_gt_workarounds_init(struct drm_i915_private *dev_priv)
  {
+       /* This is not an Wa. Enable for better image quality */
+       GT_WA_SET_BIT_MASKED(_3D_CHICKEN3,
+                            _3D_CHICKEN3_AA_LINE_QUALITY_FIX_ENABLE);
3D_CHICKEN and not part of the context? I presume you checked!


I did, back when Rodrigo used it in Cannonlake. It seems to be an example of masked register that does not live in the context... :S

+
         /* WaDisableI2mCycleOnWRPort:cnl (pre-prod) */
         if (IS_CNL_REVID(dev_priv, CNL_REVID_B0, CNL_REVID_B0))
                 GT_WA_SET_BIT(GAMT_CHKN_BIT_REG,
@@ -856,6 +860,27 @@ static int cfl_display_workarounds_init(struct drm_i915_private *dev_priv)
static int cnl_display_workarounds_init(struct drm_i915_private *dev_priv)
  {
+       if (HAS_PCH_CNP(dev_priv)) {
+               /* Wa #1181 */
+               DISPLAY_WA_SET_BIT(SOUTH_DSPCLK_GATE_D,
+                                  CNP_PWM_CGE_GATING_DISABLE);
+       }
+
+       /* WaEnableChickenDCPR:cnl */
+       DISPLAY_WA_SET_BIT(GEN8_CHICKEN_DCPR_1, MASK_WAKEMEM);
+
+       /* WaFbcWakeMemOn:cnl */
+       DISPLAY_WA_SET_BIT(DISP_ARB_CTL, DISP_FBC_MEMORY_WAKE);
+
+       /* WaSarbUnitClockGatingDisable:cnl (pre-prod) */
+       if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_B0))
+               DISPLAY_WA_SET_BIT(SLICE_UNIT_LEVEL_CLKGATE,
+                                  SARBUNIT_CLKGATE_DIS);
+
+       /* Display WA #1133: WaFbcSkipSegments:cnl */
+       DISPLAY_WA_SET_FIELD(ILK_DPFC_CHICKEN, GLK_SKIP_SEG_COUNT_MASK,
+                            GLK_SKIP_SEG_EN | GLK_SKIP_SEG_COUNT(1));
+
         return 0;
  }
They all match up, so
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
-Chris

Thanks for the reviewes!

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