drm/xe: Add helper to return any available hw engine

Get the first available engine from a gt, which helps in the case any engine serves as a context, like when reading RING_TIMESTAMP. Reviewed-by: Umesh Nerlige Ramappa <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected] Signed-off-by: Lucas De Marchi <[email protected]>
lutzbichler · Sep 6, 2024 · a67a405 · a67a405
1 parent 0af91f8
commit a67a405
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diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c
@@ -833,3 +833,14 @@ struct xe_hw_engine *xe_gt_any_hw_engine_by_reset_domain(struct xe_gt *gt,
 
 	return NULL;
 }
+
+struct xe_hw_engine *xe_gt_any_hw_engine(struct xe_gt *gt)
+{
+	struct xe_hw_engine *hwe;
+	enum xe_hw_engine_id id;
+
+	for_each_hw_engine(hwe, gt, id)
+		return hwe;
+
+	return NULL;
+}
diff --git a/drivers/gpu/drm/xe/xe_gt.h b/drivers/gpu/drm/xe/xe_gt.h
@@ -67,6 +67,13 @@ void xe_gt_remove(struct xe_gt *gt);
 struct xe_hw_engine *
 xe_gt_any_hw_engine_by_reset_domain(struct xe_gt *gt, enum xe_engine_class class);
 
+/**
+ * xe_gt_any_hw_engine - scan the list of engines and return the
+ * first available
+ * @gt: GT structure
+ */
+struct xe_hw_engine *xe_gt_any_hw_engine(struct xe_gt *gt);
+
 struct xe_hw_engine *xe_gt_hw_engine(struct xe_gt *gt,
 				     enum xe_engine_class class,
 				     u16 instance,