1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h
index 22f664b9f4c6..abbdcd3a7596 100644
--- a/drivers/cxl/cxl.h
+++ b/drivers/cxl/cxl.h
@@ -615,6 +615,29 @@ struct cxl_port {
 	bool cdat_available;
 };
 
+struct cxl_root_ops {
+	int (*qos_class)(struct cxl_port *root_port,
+			 struct access_coordinate *coord, int entries,
+			 int *qos_class);
+};
+
+/**
+ * struct cxl_root - logical collection of root cxl_port items
+ *
+ * @port: cxl_port member
+ * @ops: cxl root operations
+ */
+struct cxl_root {
+	struct cxl_port port;
+	const struct cxl_root_ops *ops;
+};
+
+static inline struct cxl_root *
+to_cxl_root(const struct cxl_port *port)
+{
+	return container_of(port, struct cxl_root, port);
+}
+
 static inline struct cxl_dport *
 cxl_find_dport_by_dev(struct cxl_port *port, const struct device *dport_dev)
 {
@@ -703,6 +726,8 @@ struct cxl_port *devm_cxl_add_port(struct device *host,
 				   struct device *uport_dev,
 				   resource_size_t component_reg_phys,
 				   struct cxl_dport *parent_dport);
+struct cxl_root *devm_cxl_add_root(struct device *host,
+				   const struct cxl_root_ops *ops);
 struct cxl_port *find_cxl_root(struct cxl_port *port);
 int devm_cxl_enumerate_ports(struct cxl_memdev *cxlmd);
 void cxl_bus_rescan(void);