drivers/thunderbolt/tunnel.c

287  * @down: PCIe downstream adapter
290  * If @down adapter is active, follows the tunnel to the PCIe upstream
294 struct tb_tunnel *tb_tunnel_discover_pci(struct tb *tb, struct tb_port *down,
300 	if (!tb_pci_port_is_enabled(down))
308 	tunnel->src_port = down;
315 	path = tb_path_discover(down, TB_PCI_HOPID, NULL, -1,
319 		tb_pci_port_enable(down, false);
326 	path = tb_path_discover(tunnel->dst_port, -1, down, TB_PCI_HOPID, NULL,
341 	if (down != tunnel->src_port) {
367  * @down: PCIe downstream adapter port
375 				      struct tb_port *down)
385 	tunnel->src_port = down;
388 	path = tb_path_alloc(tb, down, TB_PCI_HOPID, up, TB_PCI_HOPID, 0,
396 	path = tb_path_alloc(tb, up, TB_PCI_HOPID, down, TB_PCI_HOPID, 0,
831 	 * max_up/down fields. For discovery we just read what the
1779 static int tb_usb3_max_link_rate(struct tb_port *up, struct tb_port *down)
1788 	ret = usb4_usb3_port_max_link_rate(down);
1949  * @down: USB3 downstream adapter
1952  * If @down adapter is active, follows the tunnel to the USB3 upstream
1956 struct tb_tunnel *tb_tunnel_discover_usb3(struct tb *tb, struct tb_port *down,
1962 	if (!tb_usb3_port_is_enabled(down))
1970 	tunnel->src_port = down;
1977 	path = tb_path_discover(down, TB_USB3_HOPID, NULL, -1,
1981 		tb_usb3_port_enable(down, false);
1987 	path = tb_path_discover(tunnel->dst_port, -1, down, TB_USB3_HOPID, NULL,
2001 	if (down != tunnel->src_port) {
2012 	if (!tb_route(down->sw)) {
2019 		ret = usb4_usb3_port_allocated_bandwidth(down,
2050  * @down: USB3 downstream adapter port
2062 				       struct tb_port *down, int max_up,
2069 	if (!tb_route(down->sw) && (max_up > 0 || max_down > 0)) {
2075 		max_rate = tb_usb3_max_link_rate(down, up);
2089 	tunnel->src_port = down;
2094 	path = tb_path_alloc(tb, down, TB_USB3_HOPID, up, TB_USB3_HOPID, 0,
2103 	path = tb_path_alloc(tb, up, TB_USB3_HOPID, down, TB_USB3_HOPID, 0,
2112 	if (!tb_route(down->sw)) {