[PATCH 2/3] drm/xe/vf: Don't try to program MOCS if VF

Michal Wajdeczko michal.wajdeczko at intel.com
Fri Apr 5 13:39:35 UTC 2024


VFs drivers don't have access to MOCS registers. It is a PF driver
responsibility to program MOCS according to the HW team guidelines.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
---
 drivers/gpu/drm/xe/xe_mocs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_mocs.c b/drivers/gpu/drm/xe/xe_mocs.c
index bff659d20062..d16fa64da881 100644
--- a/drivers/gpu/drm/xe/xe_mocs.c
+++ b/drivers/gpu/drm/xe/xe_mocs.c
@@ -568,6 +568,9 @@ void xe_mocs_init(struct xe_gt *gt)
 	flags = get_mocs_settings(gt_to_xe(gt), &table);
 	mocs_dbg(gt, "flag:0x%x\n", flags);
 
+	if (IS_SRIOV_VF(gt_to_xe(gt)))
+		return;
+
 	if (flags & HAS_GLOBAL_MOCS)
 		__init_mocs_table(gt, &table);
 	if (flags & HAS_LNCF_MOCS)
-- 
2.43.0



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