drm/xe/guc: Enable w/a 16026508708

The workaround is only relevant to SRIOV but does affect all platforms.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://lore.kernel.org/r/20250403185619.1555853-2-John.C.Harrison@Intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

Author: johnharr-intel

drivers/gpu/drm/xe/abi/guc_klvs_abi.h

@@ -367,6 +367,7 @@ enum xe_guc_klv_ids {
 	GUC_WA_KLV_NP_RD_WRITE_TO_CLEAR_RCSM_AT_CGP_LATE_RESTORE			= 0x9008,
 	GUC_WORKAROUND_KLV_ID_BACK_TO_BACK_RCS_ENGINE_RESET				= 0x9009,
 	GUC_WA_KLV_WAKE_POWER_DOMAINS_FOR_OUTBOUND_MMIO					= 0x900a,
+	GUC_WA_KLV_RESET_BB_STACK_PTR_ON_VF_SWITCH					= 0x900b,
 };
 
 #endif

drivers/gpu/drm/xe/xe_guc_ads.c

@@ -376,6 +376,11 @@ static void guc_waklv_init(struct xe_guc_ads *ads)
 					GUC_WORKAROUND_KLV_ID_BACK_TO_BACK_RCS_ENGINE_RESET,
 					&offset, &remain);
 
+	if (GUC_FIRMWARE_VER(&gt->uc.guc) >= MAKE_GUC_VER(70, 44, 0) && XE_WA(gt, 16026508708))
+		guc_waklv_enable_simple(ads,
+					GUC_WA_KLV_RESET_BB_STACK_PTR_ON_VF_SWITCH,
+					&offset, &remain);
+
 	size = guc_ads_waklv_size(ads) - remain;
 	if (!size)
 		return;

drivers/gpu/drm/xe/xe_wa_oob.rules

@@ -57,3 +57,5 @@ no_media_l3	MEDIA_VERSION(3000)
 		GRAPHICS_VERSION(1260), GRAPHICS_STEP(A0, B0)
 16023105232	GRAPHICS_VERSION_RANGE(2001, 3001)
 		MEDIA_VERSION_RANGE(1301, 3000)
+16026508708	GRAPHICS_VERSION_RANGE(1200, 3001)
+		MEDIA_VERSION_RANGE(1300, 3000)