[PATCH v4 04/18] drm/i915/dg2: Update LNCF steering ranges

[Matt Roper <matthew.d.roper@xxxxxxxxx>]

DG2's replicated register ranges are almost the same at XeHP SDV with
the exception of one LNCF sub-range that switches to gslice steering.
We can re-use the XeHP SDV mslice steering table and just provide a
DG2-specific LNCF steering table.

Bspec: 66534
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
 drivers/gpu/drm/i915/gt/intel_gt.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index 8e13bfc81634..1971e34da254 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -103,6 +103,12 @@ static const struct intel_mmio_range xehpsdv_lncf_steering_table[] = {
 	{},
 };
 
+static const struct intel_mmio_range dg2_lncf_steering_table[] = {
+	{ 0x00B000, 0x00B0FF },
+	{ 0x00D880, 0x00D8FF },
+	{},
+};
+
 static u16 slicemask(struct intel_gt *gt, int count)
 {
 	u64 dss_mask = intel_sseu_get_subslices(&gt->info.sseu, 0);
@@ -129,7 +135,10 @@ int intel_gt_init_mmio(struct intel_gt *gt)
 			(intel_uncore_read(gt->uncore, GEN10_MIRROR_FUSE3) &
 			 GEN12_MEML3_EN_MASK);
 
-	if (IS_XEHPSDV(i915)) {
+	if (IS_DG2(i915)) {
+		gt->steering_table[MSLICE] = xehpsdv_mslice_steering_table;
+		gt->steering_table[LNCF] = dg2_lncf_steering_table;
+	} else 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 &&
-- 
2.25.4

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