[Intel-gfx] [PATCH v2 31/32] drm/i915/dg1: Add initial DG1 workarounds

Lucas De Marchi lucas.demarchi at intel.com
Thu Jun 18 00:42:39 UTC 2020


From: Stuart Summers <stuart.summers at intel.com>

DG1 shares some workarounds with TGL and RKL and also has some
additional workarounds of its own.

Media power gating should not be applied so we just set it to
nop_init_clock_gating().

BSpec: 53508

Cc: Matt Atwood <matthew.s.atwood at intel.com>
Cc: Matt Roper <matthew.d.roper at intel.com>
Cc: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
Cc: José Roberto de Souza <jose.souza at intel.com>
Signed-off-by: Stuart Summers <stuart.summers at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 .../drm/i915/display/intel_display_power.c    |  5 +-
 drivers/gpu/drm/i915/display/intel_sprite.c   |  4 +-
 drivers/gpu/drm/i915/gt/intel_workarounds.c   | 91 ++++++++++++++++---
 drivers/gpu/drm/i915/i915_reg.h               | 10 +-
 drivers/gpu/drm/i915/intel_pm.c               | 17 +++-
 5 files changed, 105 insertions(+), 22 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 5dc62e6068f24..3a016abd80c53 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -5462,8 +5462,9 @@ static void tgl_bw_buddy_init(struct drm_i915_private *dev_priv)
 	unsigned long abox_mask = INTEL_INFO(dev_priv)->abox_mask;
 	int config, i;
 
-	if (IS_TGL_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_B0))
-		/* Wa_1409767108: tgl */
+	if (IS_DG1_REVID(dev_priv, DG1_REVID_A0, DG1_REVID_A0) ||
+	    IS_TGL_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_B0))
+		/* Wa_1409767108:tgl,dg1 */
 		table = wa_1409767108_buddy_page_masks;
 	else
 		table = tgl_buddy_page_masks;
diff --git a/drivers/gpu/drm/i915/display/intel_sprite.c b/drivers/gpu/drm/i915/display/intel_sprite.c
index 63ac79f88fa21..ba03f2459d9b5 100644
--- a/drivers/gpu/drm/i915/display/intel_sprite.c
+++ b/drivers/gpu/drm/i915/display/intel_sprite.c
@@ -2842,8 +2842,8 @@ static bool skl_plane_format_mod_supported(struct drm_plane *_plane,
 static bool gen12_plane_supports_mc_ccs(struct drm_i915_private *dev_priv,
 					enum plane_id plane_id)
 {
-	/* Wa_14010477008:tgl[a0..c0],rkl[all] */
-	if (IS_ROCKETLAKE(dev_priv) ||
+	/* Wa_14010477008:tgl[a0..c0],rkl[all],dg1[all] */
+	if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv) ||
 	    IS_TGL_REVID(dev_priv, TGL_REVID_A0, TGL_REVID_C0))
 		return false;
 
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 741710ca2b9a5..5a9772011d335 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -641,6 +641,20 @@ static void tgl_ctx_workarounds_init(struct intel_engine_cs *engine,
 	       0);
 }
 
+static void dg1_ctx_workarounds_init(struct intel_engine_cs *engine,
+				     struct i915_wa_list *wal)
+{
+	gen12_ctx_workarounds_init(engine, wal);
+
+	/* Wa_1409044764 */
+	WA_CLR_BIT_MASKED(GEN11_COMMON_SLICE_CHICKEN3,
+			  DG1_FLOAT_POINT_BLEND_OPT_STRICT_MODE_EN);
+
+	/* Wa_22010493298 */
+	WA_SET_BIT_MASKED(HIZ_CHICKEN,
+			  DG1_HZ_READ_SUPPRESSION_OPTIMIZATION_DISABLE);
+}
+
 static void
 __intel_engine_init_ctx_wa(struct intel_engine_cs *engine,
 			   struct i915_wa_list *wal,
@@ -653,7 +667,9 @@ __intel_engine_init_ctx_wa(struct intel_engine_cs *engine,
 
 	wa_init_start(wal, name, engine->name);
 
-	if (IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915))
+	if (IS_DG1(i915))
+		dg1_ctx_workarounds_init(engine, wal);
+	else if (IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915))
 		tgl_ctx_workarounds_init(engine, wal);
 	else if (IS_GEN(i915, 12))
 		gen12_ctx_workarounds_init(engine, wal);
@@ -1213,10 +1229,30 @@ tgl_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal)
 			    L3_CLKGATE_DIS | L3_CR2X_CLKGATE_DIS);
 }
 
+static void
+dg1_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal)
+{
+	gen12_gt_workarounds_init(i915, wal);
+
+	/* Wa_1607087056:dg1 */
+	if (IS_DG1_REVID(i915, DG1_REVID_A0, DG1_REVID_A0))
+		wa_write_or(wal,
+			    SLICE_UNIT_LEVEL_CLKGATE,
+			    L3_CLKGATE_DIS | L3_CR2X_CLKGATE_DIS);
+
+	/* Wa_1409420604:dg1 */
+	if (IS_DG1(i915))
+		wa_write_or(wal,
+			    SUBSLICE_UNIT_LEVEL_CLKGATE2,
+			    CPSSUNIT_CLKGATE_DIS);
+}
+
 static void
 gt_init_workarounds(struct drm_i915_private *i915, struct i915_wa_list *wal)
 {
-	if (IS_TIGERLAKE(i915))
+	if (IS_DG1(i915))
+		dg1_gt_workarounds_init(i915, wal);
+	else if (IS_TIGERLAKE(i915))
 		tgl_gt_workarounds_init(i915, wal);
 	else if (IS_GEN(i915, 12))
 		gen12_gt_workarounds_init(i915, wal);
@@ -1581,6 +1617,20 @@ static void tgl_whitelist_build(struct intel_engine_cs *engine)
 	}
 }
 
+static void dg1_whitelist_build(struct intel_engine_cs *engine)
+{
+	struct i915_wa_list *w = &engine->whitelist;
+
+	tgl_whitelist_build(engine);
+
+	/* GEN:BUG:1409280441:dg1 */
+	if (IS_DG1_REVID(engine->i915, DG1_REVID_A0, DG1_REVID_A0) &&
+	    (engine->class == RENDER_CLASS ||
+	     engine->class == COPY_ENGINE_CLASS))
+		whitelist_reg_ext(w, RING_ID(engine->mmio_base),
+				  RING_FORCE_TO_NONPRIV_ACCESS_RD);
+}
+
 void intel_engine_init_whitelist(struct intel_engine_cs *engine)
 {
 	struct drm_i915_private *i915 = engine->i915;
@@ -1588,7 +1638,9 @@ void intel_engine_init_whitelist(struct intel_engine_cs *engine)
 
 	wa_init_start(w, "whitelist", engine->name);
 
-	if (IS_GEN(i915, 12))
+	if (IS_DG1(i915))
+		dg1_whitelist_build(engine);
+	else if (IS_GEN(i915, 12))
 		tgl_whitelist_build(engine);
 	else if (IS_GEN(i915, 11))
 		icl_whitelist_build(engine);
@@ -1642,15 +1694,18 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 {
 	struct drm_i915_private *i915 = engine->i915;
 
-	if (IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0)) {
+	if (IS_DG1_REVID(i915, DG1_REVID_A0, DG1_REVID_A0) ||
+	    IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0)) {
 		/*
-		 * Wa_1607138336:tgl
-		 * Wa_1607063988:tgl
+		 * Wa_1607138336:tgl[a0],dg1[a0]
+		 * Wa_1607063988:tgl[a0],dg1[a0]
 		 */
 		wa_write_or(wal,
 			    GEN9_CTX_PREEMPT_REG,
 			    GEN12_DISABLE_POSH_BUSY_FF_DOP_CG);
+	}
 
+	if (IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0)) {
 		/*
 		 * Wa_1606679103:tgl
 		 * (see also Wa_1606682166:icl)
@@ -1663,32 +1718,40 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal)
 		wa_write_or(wal,
 			    GEN7_FF_THREAD_MODE,
 			    GEN12_FF_TESSELATION_DOP_GATE_DISABLE);
+	}
 
-		/* Wa_1408615072:tgl */
+	if (IS_DG1(i915) || IS_TGL_REVID(i915, TGL_REVID_A0, TGL_REVID_A0)) {
+		/* Wa_1408615072:tgl[a0],dg1 */
 		wa_write_or(wal, UNSLICE_UNIT_LEVEL_CLKGATE2,
 			    VSUNIT_CLKGATE_DIS_TGL);
 	}
 
-	if (IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915)) {
-		/* Wa_1606931601:tgl,rkl */
+	if (IS_DG1(i915) || IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915)) {
+		/* Wa_1606931601:tgl,rkl,dg1 */
 		wa_masked_en(wal, GEN7_ROW_CHICKEN2, GEN12_DISABLE_EARLY_READ);
+	}
 
-		/* Wa_1409804808:tgl,rkl */
+	if (IS_DG1_REVID(i915, DG1_REVID_A0, DG1_REVID_A0) ||
+	    IS_ROCKETLAKE(i915) || IS_TIGERLAKE(i915)) {
+		/* Wa_1409804808:tgl,rkl,dg1[a0] */
 		wa_masked_en(wal, GEN7_ROW_CHICKEN2,
 			     GEN12_PUSH_CONST_DEREF_HOLD_DIS);
 
 		/*
 		 * Wa_1409085225:tgl
-		 * Wa_14010229206:tgl,rkl
+		 * Wa_14010229206:tgl,rkl,dg1[a0]
 		 */
 		wa_masked_en(wal, GEN9_ROW_CHICKEN4, GEN12_DISABLE_TDL_PUSH);
 
 		/*
 		 * Wa_1607030317:tgl
 		 * Wa_1607186500:tgl
-		 * Wa_1607297627:tgl,rkl there are multiple entries for this
-		 * WA in the BSpec; some indicate this is an A0-only WA,
-		 * others indicate it applies to all steppings.
+		 * Wa_1607297627:tgl,rkl,dg1[a0]
+		 *
+		 * On TGL and RKL there are multiple entries for this WA in the
+		 * BSpec; some indicate this is an A0-only WA, others indicate
+		 * it applies to all steppings so we trust the "all steppings."
+		 * For DG1 this only applies to A0.
 		 */
 		wa_masked_en(wal,
 			     GEN6_RC_SLEEP_PSMI_CONTROL,
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 34ed419283a70..0fd6aed908cde 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2530,6 +2530,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
 #define RING_PSMI_CTL(base)	_MMIO((base) + 0x50)
 #define RING_MAX_IDLE(base)	_MMIO((base) + 0x54)
 #define RING_HWS_PGA(base)	_MMIO((base) + 0x80)
+#define RING_ID(base)		_MMIO((base) + 0x8c)
 #define RING_HWS_PGA_GEN6(base)	_MMIO((base) + 0x2080)
 #define RING_RESET_CTL(base)	_MMIO((base) + 0xd0)
 #define   RESET_CTL_CAT_ERROR	   REG_BIT(2)
@@ -4144,6 +4145,7 @@ enum {
 
 #define GEN9_CLKGATE_DIS_3		_MMIO(0x46538)
 #define   TGL_VRH_GATING_DIS		REG_BIT(31)
+#define   DPT_GATING_DIS		REG_BIT(22)
 
 #define GEN9_CLKGATE_DIS_4		_MMIO(0x4653C)
 #define   BXT_GMBUS_GATING_DIS		(1 << 14)
@@ -7959,12 +7961,14 @@ enum {
 #define GEN8_L3CNTLREG	_MMIO(0x7034)
   #define GEN8_ERRDETBCTRL (1 << 9)
 
-#define GEN11_COMMON_SLICE_CHICKEN3		_MMIO(0x7304)
-  #define GEN11_BLEND_EMB_FIX_DISABLE_IN_RCC	(1 << 11)
-  #define GEN12_DISABLE_CPS_AWARE_COLOR_PIPE	(1 << 9)
+#define GEN11_COMMON_SLICE_CHICKEN3			_MMIO(0x7304)
+  #define DG1_FLOAT_POINT_BLEND_OPT_STRICT_MODE_EN	REG_BIT(12)
+  #define GEN11_BLEND_EMB_FIX_DISABLE_IN_RCC		REG_BIT(11)
+  #define GEN12_DISABLE_CPS_AWARE_COLOR_PIPE		REG_BIT(9)
 
 #define HIZ_CHICKEN					_MMIO(0x7018)
 # define CHV_HZ_8X8_MODE_IN_1X				(1 << 15)
+# define DG1_HZ_READ_SUPPRESSION_OPTIMIZATION_DISABLE   (1 << 14)
 # define BDW_HIZ_POWER_COMPILER_CLOCK_GATING_DISABLE	(1 << 3)
 
 #define GEN9_SLICE_COMMON_ECO_CHICKEN0		_MMIO(0x7308)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 2a32d62307954..77bf1a8c285b3 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -7123,6 +7123,19 @@ static void tgl_init_clock_gating(struct drm_i915_private *dev_priv)
 			 0, DFR_DISABLE);
 }
 
+static void dg1_init_clock_gating(struct drm_i915_private *dev_priv)
+{
+	/*
+	 * As opposed to TGL, we should not touch the registers for  media power
+	 * gating
+	 */
+
+	/* Wa_14010096844:dg1[a0] */
+	if (IS_DG1_REVID(dev_priv, DG1_REVID_A0, DG1_REVID_A0))
+		I915_WRITE(GEN9_CLKGATE_DIS_3, I915_READ(GEN9_CLKGATE_DIS_3) |
+			   DPT_GATING_DIS);
+}
+
 static void cnp_init_clock_gating(struct drm_i915_private *dev_priv)
 {
 	if (!HAS_PCH_CNP(dev_priv))
@@ -7499,7 +7512,9 @@ 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_GEN(dev_priv, 12))
+	if (IS_DG1(dev_priv))
+		dev_priv->display.init_clock_gating = dg1_init_clock_gating;
+	else if (IS_GEN(dev_priv, 12))
 		dev_priv->display.init_clock_gating = tgl_init_clock_gating;
 	else if (IS_GEN(dev_priv, 11))
 		dev_priv->display.init_clock_gating = icl_init_clock_gating;
-- 
2.26.2



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