[RFC PATCH 05/20] drm/i915: Transform GT WAs into static tables

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This is for WAs that need to touch global MMIO registers
related to GT.

Suggested-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Signed-off-by: Oscar Mateo <oscar.mateo@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_drv.h          |   1 +
 drivers/gpu/drm/i915/intel_workarounds.c | 404 +++++++++++++++++++------------
 drivers/gpu/drm/i915/intel_workarounds.h |   3 +
 3 files changed, 253 insertions(+), 155 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1c73fec..72b5d80 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2007,6 +2007,7 @@ struct i915_wa_reg_table {
 
 struct i915_workarounds {
 	u32 ctx_count;
+	u32 gt_count;
 	u32 hw_whitelist_count[I915_NUM_ENGINES];
 };
 
diff --git a/drivers/gpu/drm/i915/intel_workarounds.c b/drivers/gpu/drm/i915/intel_workarounds.c
index b00899e..b07fbd0 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/intel_workarounds.c
@@ -29,6 +29,10 @@
 	.name = (wa),			\
 	.type = I915_WA_TYPE_CONTEXT
 
+#define WA_GT(wa)			\
+	.name = (wa),			\
+	.type = I915_WA_TYPE_GT
+
 #define ALL_REVS		\
 	.since = 0,		\
 	.until = REVID_FOREVER
@@ -40,6 +44,18 @@
 #define REG(a)		\
 	.addr = (a)
 
+#define SET_BIT(m) 		\
+	.mask = (m),		\
+	.value = (m)
+
+#define CLEAR_BIT(m) 		\
+	.mask = (m),		\
+	.value = 0
+
+#define SET_FIELD(m, v) 	\
+	.mask = (m),		\
+	.value = (v)
+
 #define MASK(mask, value)	((mask) << 16 | (value))
 #define MASK_ENABLE(x)		(MASK((x), (x)))
 #define MASK_DISABLE(x)		(MASK((x), 0))
@@ -575,196 +591,274 @@ int intel_ctx_workarounds_emit(struct drm_i915_gem_request *req)
 	return 0;
 }
 
-static void bdw_gt_workarounds_apply(struct drm_i915_private *dev_priv)
+static uint mmio_workarounds_apply(struct drm_i915_private *dev_priv,
+				   const struct i915_wa_reg_table *wa_table,
+				   uint table_count)
 {
-}
+	uint total_count = 0;
+	int i, j;
 
-static void chv_gt_workarounds_apply(struct drm_i915_private *dev_priv)
-{
-}
+	for (i = 0; i < table_count; i++) {
+		struct i915_wa_reg *wa = wa_table[i].table;
 
-static void gen9_gt_workarounds_apply(struct drm_i915_private *dev_priv)
-{
-	if (HAS_LLC(dev_priv)) {
-		/* WaCompressedResourceSamplerPbeMediaNewHashMode:skl,kbl
-		 *
-		 * Must match Display Engine. See
-		 * WaCompressedResourceDisplayNewHashMode.
-		 */
-		I915_WRITE(MMCD_MISC_CTRL,
-			   I915_READ(MMCD_MISC_CTRL) |
-			   MMCD_PCLA |
-			   MMCD_HOTSPOT_EN);
-	}
+		for (j = 0; j < wa_table[i].count; j++) {
+			wa[j].applied =
+				IS_REVID(dev_priv, wa[j].since, wa[j].until);
 
-	/* WaContextSwitchWithConcurrentTLBInvalidate:skl,bxt,kbl,glk,cfl */
-	I915_WRITE(GEN9_CSFE_CHICKEN1_RCS,
-		   _MASKED_BIT_ENABLE(GEN9_PREEMPT_GPGPU_SYNC_SWITCH_DISABLE));
+			if (wa[j].applied && wa[j].pre_hook)
+				wa[j].applied = wa[j].pre_hook(dev_priv, &wa[j]);
 
-	/* WaEnableLbsSlaRetryTimerDecrement:skl,bxt,kbl,glk,cfl */
-	I915_WRITE(BDW_SCRATCH1, I915_READ(BDW_SCRATCH1) |
-		   GEN9_LBS_SLA_RETRY_TIMER_DECREMENT_ENABLE);
+			if (wa[j].applied) {
+				i915_reg_t addr = wa[j].addr;
+				u32 value = wa[j].value;
+				u32 mask = wa[j].mask;
 
-	/* WaDisableKillLogic:bxt,skl,kbl */
-	if (!IS_COFFEELAKE(dev_priv))
-		I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) |
-			   ECOCHK_DIS_TLB);
+				if (wa[j].is_masked_reg) {
+					GEM_BUG_ON(mask & 0xffff0000);
+					I915_WRITE(addr, value);
+				} else {
+					I915_WRITE(addr,
+						(I915_READ(addr) & ~mask) |
+						value);
+				}
 
-	/* WaDisableHDCInvalidation:skl,bxt,kbl,cfl */
-	I915_WRITE(GAM_ECOCHK, I915_READ(GAM_ECOCHK) |
-		   BDW_DISABLE_HDC_INVALIDATION);
+				if (wa[j].post_hook)
+					wa[j].post_hook(dev_priv, &wa[j]);
 
-	/* WaOCLCoherentLineFlush:skl,bxt,kbl,cfl */
-	I915_WRITE(GEN8_L3SQCREG4, (I915_READ(GEN8_L3SQCREG4) |
-				    GEN8_LQSC_FLUSH_COHERENT_LINES));
+				total_count++;
+			}
+		}
+	}
 
-	/* WaEnablePreemptionGranularityControlByUMD:skl,bxt,kbl,cfl,[cnl] */
-	I915_WRITE(GEN7_FF_SLICE_CS_CHICKEN1,
-		   _MASKED_BIT_ENABLE(GEN9_FFSC_PERCTX_PREEMPT_CTRL));
+	return total_count;
 }
 
-static void skl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
-{
-	gen9_gt_workarounds_apply(dev_priv);
+static struct i915_wa_reg gen8_gt_was[] = {
+};
 
-	/* WaEnableGapsTsvCreditFix:skl */
-	I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
-				   GEN9_GAPS_TSV_CREDIT_DISABLE));
+static struct i915_wa_reg bdw_gt_was[] = {
+};
 
-	/* WaDisableGafsUnitClkGating:skl */
-	I915_WRITE(GEN7_UCGCTL4, (I915_READ(GEN7_UCGCTL4) |
-				  GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE));
+static struct i915_wa_reg chv_gt_was[] = {
+};
 
-	/* WaInPlaceDecompressionHang:skl */
-	if (IS_SKL_REVID(dev_priv, SKL_REVID_H0, REVID_FOREVER))
-		I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA,
-			   (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
-			    GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
-}
+static struct i915_wa_reg gen9_gt_was[] = {
+	{ WA_GT("WaCompressedResourceSamplerPbeMediaNewHashMode"),
+	  ALL_REVS, REG(MMCD_MISC_CTRL),
+	  SET_BIT(MMCD_PCLA | MMCD_HOTSPOT_EN),
+	  .pre_hook = has_llc },
 
-static void bxt_gt_workarounds_apply(struct drm_i915_private *dev_priv)
-{
-	gen9_gt_workarounds_apply(dev_priv);
+	{ WA_GT("WaContextSwitchWithConcurrentTLBInvalidate"),
+	  ALL_REVS, REG(GEN9_CSFE_CHICKEN1_RCS),
+	  SET_BIT_MASKED(GEN9_PREEMPT_GPGPU_SYNC_SWITCH_DISABLE) },
+
+	{ WA_GT("WaEnableLbsSlaRetryTimerDecrement"),
+	  ALL_REVS, REG(BDW_SCRATCH1),
+	  SET_BIT(GEN9_LBS_SLA_RETRY_TIMER_DECREMENT_ENABLE) },
+
+	{ WA_GT("WaDisableHDCInvalidation"),
+	  ALL_REVS, REG(GAM_ECOCHK),
+	  SET_BIT(BDW_DISABLE_HDC_INVALIDATION) },
+
+	{ WA_GT("WaOCLCoherentLineFlush"),
+	  ALL_REVS, REG(GEN8_L3SQCREG4),
+	  SET_BIT(GEN8_LQSC_FLUSH_COHERENT_LINES) },
+
+	{ WA_GT("WaEnablePreemptionGranularityControlByUMD"),
+	  ALL_REVS, REG(GEN7_FF_SLICE_CS_CHICKEN1),
+	  SET_BIT_MASKED(GEN9_FFSC_PERCTX_PREEMPT_CTRL) },
+};
+
+static struct i915_wa_reg skl_gt_was[] = {
+	{ WA_GT("WaDisableKillLogic"),
+	  ALL_REVS, REG(GAM_ECOCHK),
+	  SET_BIT(ECOCHK_DIS_TLB) },
+
+	{ WA_GT("WaEnableGapsTsvCreditFix"),
+	  ALL_REVS, REG(GEN8_GARBCNTL),
+	  SET_BIT(GEN9_GAPS_TSV_CREDIT_DISABLE) },
+
+	{ WA_GT("WaDisableGafsUnitClkGating"),
+	  ALL_REVS, REG(GEN7_UCGCTL4),
+	  SET_BIT(GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE) },
+
+	{ WA_GT("WaInPlaceDecompressionHang"),
+	  REVS(SKL_REVID_H0, REVID_FOREVER), REG(GEN9_GAMT_ECO_REG_RW_IA),
+	  SET_BIT(GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS) },
+};
+
+static struct i915_wa_reg bxt_gt_was[] = {
+	{ WA_GT("WaDisableKillLogic"),
+	  ALL_REVS, REG(GAM_ECOCHK),
+	  SET_BIT(ECOCHK_DIS_TLB) },
 
-	/* WaStoreMultiplePTEenable:bxt */
 	/* This is a requirement according to Hardware specification */
-	if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1))
-		I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_TLBPF);
+	{ WA_GT("WaStoreMultiplePTEenable"),
+	  REVS(0, BXT_REVID_A1), REG(TILECTL),
+	  SET_BIT(TILECTL_TLBPF) },
+
+	{ WA_GT("WaSetClckGatingDisableMedia"),
+	  REVS(0, BXT_REVID_A1), REG(GEN7_MISCCPCTL),
+	  CLEAR_BIT(GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE) },
+
+	{ WA_GT("WaDisablePooledEuLoadBalancingFix"),
+	  REVS(BXT_REVID_B0, REVID_FOREVER), REG(FF_SLICE_CS_CHICKEN2),
+	  SET_BIT_MASKED(GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE) },
+
+	{ WA_GT("WaProgramL3SqcReg1DefaultForPerf"),
+	  REVS(BXT_REVID_B0, REVID_FOREVER), REG(GEN8_L3SQCREG1),
+	  SET_FIELD(L3_PRIO_CREDITS_MASK, L3_GENERAL_PRIO_CREDITS(62) |
+					  L3_HIGH_PRIO_CREDITS(2)) },
+
+	{ WA_GT("WaInPlaceDecompressionHang"),
+	  REVS(BXT_REVID_C0, REVID_FOREVER), REG(GEN9_GAMT_ECO_REG_RW_IA),
+	  SET_BIT(GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS) },
+};
 
-	/* WaSetClckGatingDisableMedia:bxt */
-	if (IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1)) {
-		I915_WRITE(GEN7_MISCCPCTL, (I915_READ(GEN7_MISCCPCTL) &
-					    ~GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE));
-	}
+static struct i915_wa_reg kbl_gt_was[] = {
+	{ WA_GT("WaDisableKillLogic"),
+	  ALL_REVS, REG(GAM_ECOCHK),
+	  SET_BIT(ECOCHK_DIS_TLB) },
 
-	/* WaDisablePooledEuLoadBalancingFix:bxt */
-	if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER)) {
-		I915_WRITE(FF_SLICE_CS_CHICKEN2,
-			   _MASKED_BIT_ENABLE(GEN9_POOLED_EU_LOAD_BALANCING_FIX_DISABLE));
-	}
+	{ WA_GT("WaEnableGapsTsvCreditFix"),
+	  ALL_REVS, REG(GEN8_GARBCNTL),
+	  SET_BIT(GEN9_GAPS_TSV_CREDIT_DISABLE) },
 
-	/* WaProgramL3SqcReg1DefaultForPerf:bxt */
-	if (IS_BXT_REVID(dev_priv, BXT_REVID_B0, REVID_FOREVER)) {
-		u32 val = I915_READ(GEN8_L3SQCREG1);
-		val &= ~L3_PRIO_CREDITS_MASK;
-		val |= L3_GENERAL_PRIO_CREDITS(62) | L3_HIGH_PRIO_CREDITS(2);
-		I915_WRITE(GEN8_L3SQCREG1, val);
-	}
+	{ WA_GT("WaDisableDynamicCreditSharing"),
+	  REVS(0, KBL_REVID_B0), REG(GAMT_CHKN_BIT_REG),
+	  SET_BIT(GAMT_CHKN_DISABLE_DYNAMIC_CREDIT_SHARING) },
 
-	/* WaInPlaceDecompressionHang:bxt */
-	if (IS_BXT_REVID(dev_priv, BXT_REVID_C0, REVID_FOREVER))
-		I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA,
-			   (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
-			    GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
-}
+	{ WA_GT("WaDisableGafsUnitClkGating"),
+	  ALL_REVS, REG(GEN7_UCGCTL4),
+	  SET_BIT(GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE) },
 
-static void kbl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
-{
-	gen9_gt_workarounds_apply(dev_priv);
-
-	/* WaEnableGapsTsvCreditFix:kbl */
-	I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
-				   GEN9_GAPS_TSV_CREDIT_DISABLE));
-
-	/* WaDisableDynamicCreditSharing:kbl */
-	if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0))
-		I915_WRITE(GAMT_CHKN_BIT_REG,
-			   (I915_READ(GAMT_CHKN_BIT_REG) |
-			    GAMT_CHKN_DISABLE_DYNAMIC_CREDIT_SHARING));
-
-	/* WaDisableGafsUnitClkGating:kbl */
-	I915_WRITE(GEN7_UCGCTL4, (I915_READ(GEN7_UCGCTL4) |
-				  GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE));
-
-	/* WaInPlaceDecompressionHang:kbl */
-	I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA,
-		   (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
-		    GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
-}
+	{ WA_GT("WaInPlaceDecompressionHang"),
+	  ALL_REVS, REG(GEN9_GAMT_ECO_REG_RW_IA),
+	  SET_BIT(GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS) },
+};
 
-static void glk_gt_workarounds_apply(struct drm_i915_private *dev_priv)
-{
-	gen9_gt_workarounds_apply(dev_priv);
-}
+static struct i915_wa_reg glk_gt_was[] = {
+	{ WA_GT("WaDisableKillLogic"),
+	  ALL_REVS, REG(GAM_ECOCHK),
+	  SET_BIT(ECOCHK_DIS_TLB) },
+};
 
-static void cfl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
-{
-	gen9_gt_workarounds_apply(dev_priv);
+static struct i915_wa_reg cfl_gt_was[] = {
+	{ WA_GT("WaEnableGapsTsvCreditFix"),
+	  ALL_REVS, REG(GEN8_GARBCNTL),
+	  SET_BIT(GEN9_GAPS_TSV_CREDIT_DISABLE) },
 
-	/* WaEnableGapsTsvCreditFix:cfl */
-	I915_WRITE(GEN8_GARBCNTL, (I915_READ(GEN8_GARBCNTL) |
-				   GEN9_GAPS_TSV_CREDIT_DISABLE));
+	{ WA_GT("WaDisableGafsUnitClkGating"),
+	  ALL_REVS, REG(GEN7_UCGCTL4),
+	  SET_BIT(GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE) },
 
-	/* WaDisableGafsUnitClkGating:cfl */
-	I915_WRITE(GEN7_UCGCTL4, (I915_READ(GEN7_UCGCTL4) |
-				  GEN8_EU_GAUNIT_CLOCK_GATE_DISABLE));
+	{ WA_GT("WaInPlaceDecompressionHang"),
+	  ALL_REVS, REG(GEN9_GAMT_ECO_REG_RW_IA),
+	  SET_BIT(GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS) },
+};
 
-	/* WaInPlaceDecompressionHang:cfl */
-	I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA,
-		   (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
-		    GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
-}
+static struct i915_wa_reg cnl_gt_was[] = {
+	{ WA_GT("WaDisableI2mCycleOnWRPort"),
+	  REVS(CNL_REVID_B0, CNL_REVID_B0), REG(GAMT_CHKN_BIT_REG),
+	  SET_BIT(GAMT_CHKN_DISABLE_I2M_CYCLE_ON_WR_PORT) },
 
-static void cnl_gt_workarounds_apply(struct drm_i915_private *dev_priv)
-{
-	/* WaDisableI2mCycleOnWRPort:cnl (pre-prod) */
-	if (IS_CNL_REVID(dev_priv, CNL_REVID_B0, CNL_REVID_B0))
-		I915_WRITE(GAMT_CHKN_BIT_REG,
-			   (I915_READ(GAMT_CHKN_BIT_REG) |
-			    GAMT_CHKN_DISABLE_I2M_CYCLE_ON_WR_PORT));
+	{ WA_GT("WaInPlaceDecompressionHang"),
+	  ALL_REVS, REG(GEN9_GAMT_ECO_REG_RW_IA),
+	  SET_BIT(GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS) },
 
-	/* WaInPlaceDecompressionHang:cnl */
-	I915_WRITE(GEN9_GAMT_ECO_REG_RW_IA,
-		   (I915_READ(GEN9_GAMT_ECO_REG_RW_IA) |
-		    GAMT_ECO_ENABLE_IN_PLACE_DECOMPRESS));
+	{ WA_GT("WaEnablePreemptionGranularityControlByUMD"),
+	  ALL_REVS, REG(GEN7_FF_SLICE_CS_CHICKEN1),
+	  SET_BIT_MASKED(GEN9_FFSC_PERCTX_PREEMPT_CTRL) },
+};
 
-	/* WaEnablePreemptionGranularityControlByUMD:cnl */
-	I915_WRITE(GEN7_FF_SLICE_CS_CHICKEN1,
-		   _MASKED_BIT_ENABLE(GEN9_FFSC_PERCTX_PREEMPT_CTRL));
-}
+static const struct i915_wa_reg_table bdw_gt_wa_tbl[] = {
+	{ gen8_gt_was, ARRAY_SIZE(gen8_gt_was) },
+	{ bdw_gt_was,  ARRAY_SIZE(bdw_gt_was) },
+};
 
-void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
+static const struct i915_wa_reg_table chv_gt_wa_tbl[] = {
+	{ gen8_gt_was, ARRAY_SIZE(gen8_gt_was) },
+	{ chv_gt_was,  ARRAY_SIZE(chv_gt_was) },
+};
+
+static const struct i915_wa_reg_table skl_gt_wa_tbl[] = {
+	{ gen9_gt_was, ARRAY_SIZE(gen9_gt_was) },
+	{ skl_gt_was,  ARRAY_SIZE(skl_gt_was) },
+};
+
+static const struct i915_wa_reg_table bxt_gt_wa_tbl[] = {
+	{ gen9_gt_was, ARRAY_SIZE(gen9_gt_was) },
+	{ bxt_gt_was,  ARRAY_SIZE(bxt_gt_was) },
+};
+
+static const struct i915_wa_reg_table kbl_gt_wa_tbl[] = {
+	{ gen9_gt_was, ARRAY_SIZE(gen9_gt_was) },
+	{ kbl_gt_was,  ARRAY_SIZE(kbl_gt_was) },
+};
+
+static const struct i915_wa_reg_table glk_gt_wa_tbl[] = {
+	{ gen9_gt_was, ARRAY_SIZE(gen9_gt_was) },
+	{ glk_gt_was,  ARRAY_SIZE(glk_gt_was) },
+};
+
+static const struct i915_wa_reg_table cfl_gt_wa_tbl[] = {
+	{ gen9_gt_was, ARRAY_SIZE(gen9_gt_was) },
+	{ cfl_gt_was,  ARRAY_SIZE(cfl_gt_was) },
+};
+
+static const struct i915_wa_reg_table cnl_gt_wa_tbl[] = {
+	{ cnl_gt_was,  ARRAY_SIZE(cnl_gt_was) },
+};
+
+void intel_gt_workarounds_get(struct drm_i915_private *dev_priv,
+			      const struct i915_wa_reg_table **wa_table,
+			      uint *table_count)
 {
+	*wa_table = NULL;
+	*table_count = 0;
+
 	if (INTEL_GEN(dev_priv) < 8)
 		return;
-	else if (IS_BROADWELL(dev_priv))
-		bdw_gt_workarounds_apply(dev_priv);
-	else if (IS_CHERRYVIEW(dev_priv))
-		chv_gt_workarounds_apply(dev_priv);
-	else if (IS_SKYLAKE(dev_priv))
-		skl_gt_workarounds_apply(dev_priv);
-	else if (IS_BROXTON(dev_priv))
-		bxt_gt_workarounds_apply(dev_priv);
-	else if (IS_KABYLAKE(dev_priv))
-		kbl_gt_workarounds_apply(dev_priv);
-	else if (IS_GEMINILAKE(dev_priv))
-		glk_gt_workarounds_apply(dev_priv);
-	else if (IS_COFFEELAKE(dev_priv))
-		cfl_gt_workarounds_apply(dev_priv);
-	else if (IS_CANNONLAKE(dev_priv))
-		cnl_gt_workarounds_apply(dev_priv);
-	else
+	else if (IS_BROADWELL(dev_priv)) {
+		*wa_table = bdw_gt_wa_tbl;
+		*table_count = ARRAY_SIZE(bdw_gt_wa_tbl);
+	} else if (IS_CHERRYVIEW(dev_priv)) {
+		*wa_table = chv_gt_wa_tbl;
+		*table_count = ARRAY_SIZE(chv_gt_wa_tbl);
+	} else if (IS_SKYLAKE(dev_priv)) {
+		*wa_table = skl_gt_wa_tbl;
+		*table_count = ARRAY_SIZE(skl_gt_wa_tbl);
+	} else if (IS_BROXTON(dev_priv)) {
+		*wa_table = bxt_gt_wa_tbl;
+		*table_count = ARRAY_SIZE(bxt_gt_wa_tbl);
+	} else if (IS_KABYLAKE(dev_priv)) {
+		*wa_table = kbl_gt_wa_tbl;
+		*table_count = ARRAY_SIZE(kbl_gt_wa_tbl);
+	} else if (IS_GEMINILAKE(dev_priv)) {
+		*wa_table = glk_gt_wa_tbl;
+		*table_count = ARRAY_SIZE(glk_gt_wa_tbl);
+	} else if (IS_COFFEELAKE(dev_priv)) {
+		*wa_table = cfl_gt_wa_tbl;
+		*table_count = ARRAY_SIZE(cfl_gt_wa_tbl);
+	} else if (IS_CANNONLAKE(dev_priv)) {
+		*wa_table = cnl_gt_wa_tbl;
+		*table_count = ARRAY_SIZE(cnl_gt_wa_tbl);
+	} else {
 		MISSING_CASE(INTEL_GEN(dev_priv));
+		return;
+	}
+}
+
+void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv)
+{
+	const struct i915_wa_reg_table *wa_table;
+	uint table_count, total_count;
+
+	intel_gt_workarounds_get(dev_priv, &wa_table, &table_count);
+	total_count = mmio_workarounds_apply(dev_priv, wa_table, table_count);
+
+	dev_priv->workarounds.gt_count = total_count;
+	DRM_DEBUG_DRIVER("Number of GT specific w/a: %u\n", total_count);
 }
 
 static int wa_ring_whitelist_reg(struct intel_engine_cs *engine,
diff --git a/drivers/gpu/drm/i915/intel_workarounds.h b/drivers/gpu/drm/i915/intel_workarounds.h
index 38763e7..9bb3c48 100644
--- a/drivers/gpu/drm/i915/intel_workarounds.h
+++ b/drivers/gpu/drm/i915/intel_workarounds.h
@@ -30,6 +30,9 @@ void intel_ctx_workarounds_get(struct drm_i915_private *dev_priv,
                                uint *table_count);
 int intel_ctx_workarounds_emit(struct drm_i915_gem_request *req);
 
+void intel_gt_workarounds_get(struct drm_i915_private *dev_priv,
+                              const struct i915_wa_reg_table **wa_table,
+                              uint *table_count);
 void intel_gt_workarounds_apply(struct drm_i915_private *dev_priv);
 
 int intel_whitelist_workarounds_apply(struct intel_engine_cs *engine);
-- 
1.9.1

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