[PATCH v4 7/8] drm/xe: Add helper to return any available hw engine

[Lucas De Marchi]

Get the first available engine from a gt, which helps in the case any
engine serves as a context, like when reading RING_TIMESTAMP.

Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 drivers/gpu/drm/xe/xe_gt.c | 11 +++++++++++
 drivers/gpu/drm/xe/xe_gt.h |  7 +++++++
 2 files changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c
index 5194a3d38e76..3432fef56486 100644
--- 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
index ad3fd31e0a41..a53f01362d94 100644
--- 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,
-- 
2.43.0