drm/xe/vf: Don't program MOCS if VF

MOCS programming may only be done by the PF driver.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240213154355.1221-4-michal.wajdeczko@intel.com

drivers/gpu/drm/xe/xe_mocs.c

@@ -13,6 +13,7 @@
 #include "xe_gt_mcr.h"
 #include "xe_mmio.h"
 #include "xe_platform_types.h"
+#include "xe_sriov.h"
 #include "xe_step_types.h"
 
 #if IS_ENABLED(CONFIG_DRM_XE_DEBUG)
@@ -539,6 +540,9 @@ void xe_mocs_init(struct xe_gt *gt)
 	struct xe_mocs_info table;
 	unsigned int flags;
 
+	if (IS_SRIOV_VF(gt_to_xe(gt)))
+		return;
+
 	/*
 	 * MOCS settings are split between "GLOB_MOCS" and/or "LNCFCMOCS"
 	 * registers depending on platform.