[PATCH v3 21/22] drm/i915: Move WaProgramL3SqcReg1Default to the workarounds file

[Oscar Mateo <oscar.mateo@intel.com>]

This means moving WaTempDisableDOPClkGating as well.

Notice that BXT implements a similar WA to WaProgramL3SqcReg1Default
but, according to the BSpec, it does not require WaTempDisableDOPClkGating.

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c          | 46 +++-----------------------------
 drivers/gpu/drm/i915/intel_workarounds.c | 44 ++++++++++++++++++++++++++++--
 2 files changed, 45 insertions(+), 45 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 296fe83..74cc2ffe 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -8378,39 +8378,10 @@ static void lpt_suspend_hw(struct drm_i915_private *dev_priv)
 	}
 }
 
-static void gen8_set_l3sqc_credits(struct drm_i915_private *dev_priv,
-				   int general_prio_credits,
-				   int high_prio_credits)
-{
-	u32 val;
-	u32 misccpctl;
-
-	/* WaTempDisableDOPClkGating:bdw */
-	misccpctl = I915_READ(GEN7_MISCCPCTL);
-	I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE);
-
-	val = I915_READ(GEN8_L3SQCREG1);
-	val &= ~L3_PRIO_CREDITS_MASK;
-	val |= L3_GENERAL_PRIO_CREDITS(general_prio_credits);
-	val |= L3_HIGH_PRIO_CREDITS(high_prio_credits);
-	I915_WRITE(GEN8_L3SQCREG1, val);
-
-	/*
-	 * Wait at least 100 clocks before re-enabling clock gating.
-	 * See the definition of L3SQCREG1 in BSpec.
-	 */
-	POSTING_READ(GEN8_L3SQCREG1);
-	udelay(1);
-	I915_WRITE(GEN7_MISCCPCTL, misccpctl);
-}
-
 static void bdw_init_clock_gating(struct drm_i915_private *dev_priv)
 {
 	ilk_init_lp_watermarks(dev_priv);
 
-	/* WaProgramL3SqcReg1Default:bdw */
-	gen8_set_l3sqc_credits(dev_priv, 30, 2);
-
 	lpt_init_clock_gating(dev_priv);
 }
 
@@ -8645,16 +8616,6 @@ static void vlv_init_clock_gating(struct drm_i915_private *dev_priv)
 	I915_WRITE(VLV_GUNIT_CLOCK_GATE, GCFG_DIS);
 }
 
-static void chv_init_clock_gating(struct drm_i915_private *dev_priv)
-{
-	/*
-	 * WaProgramL3SqcReg1Default:chv
-	 * See gfxspecs/Related Documents/Performance Guide/
-	 * LSQC Setting Recommendations.
-	 */
-	gen8_set_l3sqc_credits(dev_priv, 38, 2);
-}
-
 static void g4x_init_clock_gating(struct drm_i915_private *dev_priv)
 {
 	uint32_t dspclk_gate;
@@ -8782,13 +8743,12 @@ static void nop_init_clock_gating(struct drm_i915_private *dev_priv)
 void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv)
 {
 	if (IS_CANNONLAKE(dev_priv) || IS_COFFEELAKE(dev_priv) ||
-	    IS_GEMINILAKE(dev_priv) || IS_KABYLAKE(dev_priv) ||
-	    IS_BROXTON(dev_priv) || IS_SKYLAKE(dev_priv))
+	    IS_GEMINILAKE(dev_priv) || IS_KABYLAKE(dev_priv)   ||
+	    IS_BROXTON(dev_priv)    || IS_SKYLAKE(dev_priv)    ||
+	    IS_CHERRYVIEW(dev_priv))
 		dev_priv->display.init_clock_gating = nop_init_clock_gating;
 	else if (IS_BROADWELL(dev_priv))
 		dev_priv->display.init_clock_gating = bdw_init_clock_gating;
-	else if (IS_CHERRYVIEW(dev_priv))
-		dev_priv->display.init_clock_gating = chv_init_clock_gating;
 	else if (IS_HASWELL(dev_priv))
 		dev_priv->display.init_clock_gating = hsw_init_clock_gating;
 	else if (IS_IVYBRIDGE(dev_priv))
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index ca9d906..136f6fb 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -517,11 +517,33 @@ static void mmio_workarounds_apply(struct drm_i915_private *dev_priv,
 				   struct i915_wa_reg *wa,
 				   u32 count)
 {
+	u32 misccpctl;
+	u32 value;
 	int i;
 
 	for (i = 0; i < count; i++) {
-		u32 value = I915_READ(wa[i].addr);
+		/* WaTempDisableDOPClkGating */
+		if ((IS_BROADWELL(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+		    i915_mmio_reg_equal(wa[i].addr, GEN8_L3SQCREG1)) {
+			misccpctl = I915_READ(GEN7_MISCCPCTL);
+			I915_WRITE(GEN7_MISCCPCTL,
+				   misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE);
+		}
+
+		value = I915_READ(wa[i].addr);
 		I915_WRITE(wa[i].addr, (value & ~wa[i].mask) | wa[i].value);
+
+		/* WaTempDisableDOPClkGating */
+		if ((IS_BROADWELL(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
+		    i915_mmio_reg_equal(wa[i].addr, GEN8_L3SQCREG1)) {
+			/*
+			 * Wait at least 100 clocks before re-enabling clock
+			 * gating See the definition of L3SQCREG1 in BSpec.
+			 */
+			POSTING_READ(GEN8_L3SQCREG1);
+			udelay(1);
+			I915_WRITE(GEN7_MISCCPCTL, misccpctl);
+		}
 	}
 }
 
@@ -582,6 +604,14 @@ static int bdw_gt_workarounds_init(struct drm_i915_private *dev_priv)
 	GT_WA_SET_FIELD(HSW_GTT_CACHE_EN, 0xFFFFFFFF,
 			can_use_gtt_cache ? GTT_CACHE_EN_ALL : 0);
 
+	/*
+	 * WaProgramL3SqcReg1Default:bdw
+	 * See "gfxspecs/Related Documents/Performance Guide/LSQC Setting
+	 * Recommendations" and also WaTempDisableDOPClkGating.
+	 */
+	GT_WA_SET_FIELD(GEN8_L3SQCREG1, L3_PRIO_CREDITS_MASK,
+			L3_GENERAL_PRIO_CREDITS(30) | L3_HIGH_PRIO_CREDITS(2));
+
 	return 0;
 }
 
@@ -602,6 +632,14 @@ static int chv_gt_workarounds_init(struct drm_i915_private *dev_priv)
 	 */
 	GT_WA_SET_FIELD(HSW_GTT_CACHE_EN, 0xFFFFFFFF, GTT_CACHE_EN_ALL);
 
+	/*
+	 * WaProgramL3SqcReg1Default:chv
+	 * See "gfxspecs/Related Documents/Performance Guide/LSQC Setting
+	 * Recommendations" and also WaTempDisableDOPClkGating.
+	 */
+	GT_WA_SET_FIELD(GEN8_L3SQCREG1, L3_PRIO_CREDITS_MASK,
+			L3_GENERAL_PRIO_CREDITS(38) | L3_HIGH_PRIO_CREDITS(2));
+
 	return 0;
 }
 
@@ -686,7 +724,9 @@ static int bxt_gt_workarounds_init(struct drm_i915_private *dev_priv)
 				     GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE);
 	}
 
-	/* WaProgramL3SqcReg1DefaultForPerf:bxt */
+	/*
+	 * WaProgramL3SqcReg1DefaultForPerf:bxt
+	 */
 	if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER))
 		GT_WA_SET_FIELD(GEN8_L3SQCREG1, L3_PRIO_CREDITS_MASK,
 				L3_GENERAL_PRIO_CREDITS(62) |
-- 
1.9.1

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