thunderbolt: Generalize tunnel creation functionality

[linux-2.6-microblaze.git] / drivers / thunderbolt / tunnel.h

diff --git a/drivers/thunderbolt/tunnel.h b/drivers/thunderbolt/tunnel.h
index dff0f27..b4e9921 100644 (file)
--- a/drivers/thunderbolt/tunnel.h
+++ b/drivers/thunderbolt/tunnel.h
@@ -1,8 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 /*
- * Thunderbolt Cactus Ridge driver - Tunneling support
+ * Thunderbolt driver - Tunneling support
  *
  * Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
+ * Copyright (C) 2019, Intel Corporation
  */
 
 #ifndef TB_TUNNEL_H_
@@ -10,22 +11,33 @@
 
 #include "tb.h"
 
-struct tb_pci_tunnel {
+/**
+ * struct tb_tunnel - Tunnel between two ports
+ * @tb: Pointer to the domain
+ * @src_port: Source port of the tunnel
+ * @dst_port: Destination port of the tunnel
+ * @paths: All paths required by the tunnel
+ * @npaths: Number of paths in @paths
+ * @activate: Optional tunnel specific activation/deactivation
+ * @list: Tunnels are linked using this field
+ */
+struct tb_tunnel {
        struct tb *tb;
-       struct tb_port *up_port;
-       struct tb_port *down_port;
-       struct tb_path *path_to_up;
-       struct tb_path *path_to_down;
+       struct tb_port *src_port;
+       struct tb_port *dst_port;
+       struct tb_path **paths;
+       size_t npaths;
+       int (*activate)(struct tb_tunnel *tunnel, bool activate);
        struct list_head list;
 };
 
-struct tb_pci_tunnel *tb_pci_alloc(struct tb *tb, struct tb_port *up,
-                                  struct tb_port *down);
-void tb_pci_free(struct tb_pci_tunnel *tunnel);
-int tb_pci_activate(struct tb_pci_tunnel *tunnel);
-int tb_pci_restart(struct tb_pci_tunnel *tunnel);
-void tb_pci_deactivate(struct tb_pci_tunnel *tunnel);
-bool tb_pci_is_invalid(struct tb_pci_tunnel *tunnel);
+struct tb_tunnel *tb_tunnel_alloc_pci(struct tb *tb, struct tb_port *up,
+                                     struct tb_port *down);
+void tb_tunnel_free(struct tb_tunnel *tunnel);
+int tb_tunnel_activate(struct tb_tunnel *tunnel);
+int tb_tunnel_restart(struct tb_tunnel *tunnel);
+void tb_tunnel_deactivate(struct tb_tunnel *tunnel);
+bool tb_tunnel_is_invalid(struct tb_tunnel *tunnel);
 
 #endif