drm/xe: Drop WA 16015675438

With dynamic load-balancing disabled on the compute side, there's no
reason left to enable WA 16015675438. Drop it from both PVC and DG2.

Note that this can be done because now the driver always set a fixed
partition of EUs during initialization via the ccs_mode configuration.

Cc: Mateusz Jablonski <mateusz.jablonski@intel.com>
Cc: Michal Mrozek <michal.mrozek@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Michal Mrozek <michal.mrozek@intel.com>
Acked-by: Mateusz Jablonski <mateusz.jablonski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240304233103.1687412-1-lucas.demarchi@intel.comSigned-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

drivers/gpu/drm/xe/xe_guc.c

@@ -164,7 +164,7 @@ static u32 guc_ctl_wa_flags(struct xe_guc *guc)
 	if (XE_WA(gt, 22012727170) || XE_WA(gt, 22012727685))
 		flags |= GUC_WA_CONTEXT_ISOLATION;
 
-	if ((XE_WA(gt, 16015675438) || XE_WA(gt, 18020744125)) &&
+	if (XE_WA(gt, 18020744125) &&
 	    !xe_hw_engine_mask_per_class(gt, XE_ENGINE_CLASS_RENDER))
 		flags |= GUC_WA_RCS_REGS_IN_CCS_REGS_LIST;
 

drivers/gpu/drm/xe/xe_wa.c

@@ -328,12 +328,6 @@ static const struct xe_rtp_entry_sr engine_was[] = {
 		       FUNC(xe_rtp_match_first_render_or_compute)),
 	  XE_RTP_ACTIONS(SET(ROW_CHICKEN4, XEHP_DIS_BBL_SYSPIPE))
 	},
-	{ XE_RTP_NAME("16015675438"),
-	  XE_RTP_RULES(PLATFORM(DG2),
-		       FUNC(xe_rtp_match_first_render_or_compute)),
-	  XE_RTP_ACTIONS(SET(FF_SLICE_CS_CHICKEN2(RENDER_RING_BASE),
-			     PERF_FIX_BALANCING_CFE_DISABLE))
-	},
 	{ XE_RTP_NAME("18028616096"),
 	  XE_RTP_RULES(PLATFORM(DG2),
 		       FUNC(xe_rtp_match_first_render_or_compute)),
@@ -383,11 +377,6 @@ static const struct xe_rtp_entry_sr engine_was[] = {
 	  XE_RTP_RULES(PLATFORM(PVC), FUNC(xe_rtp_match_first_render_or_compute)),
 	  XE_RTP_ACTIONS(SET(ROW_CHICKEN4, XEHP_DIS_BBL_SYSPIPE))
 	},
-	{ XE_RTP_NAME("16015675438"),
-	  XE_RTP_RULES(PLATFORM(PVC), FUNC(xe_rtp_match_first_render_or_compute)),
-	  XE_RTP_ACTIONS(SET(FF_SLICE_CS_CHICKEN2(RENDER_RING_BASE),
-			     PERF_FIX_BALANCING_CFE_DISABLE))
-	},
 	{ XE_RTP_NAME("14014999345"),
 	  XE_RTP_RULES(PLATFORM(PVC), ENGINE_CLASS(COMPUTE),
 		       GRAPHICS_STEP(B0, C0)),

drivers/gpu/drm/xe/xe_wa_oob.rules

@@ -4,9 +4,6 @@
 22011391025	PLATFORM(DG2)
 22012727170	SUBPLATFORM(DG2, G11)
 22012727685	SUBPLATFORM(DG2, G11)
-16015675438	PLATFORM(PVC)
-		SUBPLATFORM(DG2, G10)
-		SUBPLATFORM(DG2, G12)
 18020744125	PLATFORM(PVC)
 1509372804	PLATFORM(PVC), GRAPHICS_STEP(A0, C0)
 1409600907	GRAPHICS_VERSION_RANGE(1200, 1250)