drm/i915/xehpsdv: Add maximum sseu limits

Due to the removal of legacy slices and the transition to a
gslice/cslice/mslice/etc. design, we'll internally store all DSS under
"slice0."

Signed-off-by: Matt Roper <[email protected]>
Reviewed-by: Caz Yokoyama <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: mattrope

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

@@ -145,7 +145,10 @@ static void gen12_sseu_info_init(struct intel_gt *gt)
 	 * across the entire device. Then calculate out the DSS for each
 	 * workload type within that software slice.
 	 */
-	intel_sseu_set_info(sseu, 1, 6, 16);
+	if (IS_XEHPSDV(gt->i915))
+		intel_sseu_set_info(sseu, 1, 32, 16);
+	else
+		intel_sseu_set_info(sseu, 1, 6, 16);
 
 	/*
 	 * As mentioned above, Xe_HP does not have the concept of a slice.

drivers/gpu/drm/i915/gt/intel_sseu.h

@@ -16,7 +16,7 @@ struct intel_gt;
 struct drm_printer;
 
 #define GEN_MAX_SLICES		(3) /* SKL upper bound */
-#define GEN_MAX_SUBSLICES	(8) /* ICL upper bound */
+#define GEN_MAX_SUBSLICES	(32) /* XEHPSDV upper bound */
 #define GEN_SSEU_STRIDE(max_entries) DIV_ROUND_UP(max_entries, BITS_PER_BYTE)
 #define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
 #define GEN_MAX_EUS		(16) /* TGL upper bound */

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

@@ -53,7 +53,7 @@ static void cherryview_sseu_device_status(struct intel_gt *gt,
 static void gen11_sseu_device_status(struct intel_gt *gt,
 				     struct sseu_dev_info *sseu)
 {
-#define SS_MAX 6
+#define SS_MAX 8
 	struct intel_uncore *uncore = gt->uncore;
 	const struct intel_gt_info *info = &gt->info;
 	u32 s_reg[SS_MAX], eu_reg[2 * SS_MAX], eu_mask[2];