drm/i915/xehpsdv: Define steering tables

Define and initialize the MMIO ranges for which XeHP SDV requires MSLICE
and LNCF steering.

Bspec: 66534
Cc: Tvrtko Ursulin <[email protected]>
Cc: Daniele Ceraolo Spurio <[email protected]>
Signed-off-by: Matt Roper <[email protected]>
Reviewed-by: Lucas De Marchi <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: mattrope

drivers/gpu/drm/i915/gt/intel_gt.c

@@ -89,6 +89,20 @@ static const struct intel_mmio_range icl_l3bank_steering_table[] = {
 	{},
 };
 
+static const struct intel_mmio_range xehpsdv_mslice_steering_table[] = {
+	{ 0x004000, 0x004AFF },
+	{ 0x00C800, 0x00CFFF },
+	{ 0x00DD00, 0x00DDFF },
+	{ 0x00E900, 0x00FFFF }, /* 0xEA00 - OxEFFF is unused */
+	{},
+};
+
+static const struct intel_mmio_range xehpsdv_lncf_steering_table[] = {
+	{ 0x00B000, 0x00B0FF },
+	{ 0x00D800, 0x00D8FF },
+	{},
+};
+
 static u16 slicemask(struct intel_gt *gt, int count)
 {
 	u64 dss_mask = intel_sseu_get_subslices(&gt->info.sseu, 0);
@@ -115,7 +129,10 @@ int intel_gt_init_mmio(struct intel_gt *gt)
 			(intel_uncore_read(gt->uncore, GEN10_MIRROR_FUSE3) &
 			 GEN12_MEML3_EN_MASK);
 
-	if (GRAPHICS_VER(i915) >= 11 &&
+	if (IS_XEHPSDV(i915)) {
+		gt->steering_table[MSLICE] = xehpsdv_mslice_steering_table;
+		gt->steering_table[LNCF] = xehpsdv_lncf_steering_table;
+	} else if (GRAPHICS_VER(i915) >= 11 &&
 		   GRAPHICS_VER_FULL(i915) < IP_VER(12, 50)) {
 		gt->steering_table[L3BANK] = icl_l3bank_steering_table;
 		gt->info.l3bank_mask =

drivers/gpu/drm/i915/gt/intel_workarounds.c

@@ -934,7 +934,6 @@ icl_wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal)
 	__add_mcr_wa(i915, wal, slice, subslice);
 }
 
-__maybe_unused
 static void
 xehp_init_mcr(struct intel_gt *gt, struct i915_wa_list *wal)
 {
@@ -1136,10 +1135,18 @@ dg1_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal)
 			    VSUNIT_CLKGATE_DIS_TGL);
 }
 
+static void
+xehpsdv_gt_workarounds_init(struct drm_i915_private *i915, struct i915_wa_list *wal)
+{
+	xehp_init_mcr(&i915->gt, wal);
+}
+
 static void
 gt_init_workarounds(struct drm_i915_private *i915, struct i915_wa_list *wal)
 {
-	if (IS_DG1(i915))
+	if (IS_XEHPSDV(i915))
+		xehpsdv_gt_workarounds_init(i915, wal);
+	else if (IS_DG1(i915))
 		dg1_gt_workarounds_init(i915, wal);
 	else if (IS_TIGERLAKE(i915))
 		tgl_gt_workarounds_init(i915, wal);