22  * Minimum bandwidth (in Mb/s) that is needed in the single transmitter/receiver
23  * direction. This is 40G - 10% guard band bandwidth.
28  * Threshold bandwidth (in Mb/s) that is used to switch the links to
55  * @groups: Bandwidth groups used in this domain.
100 	tb_port_dbg(in, "attached to bandwidth group %d\n", group->index);  in tb_bandwidth_group_attach_port()
149 		tb_port_warn(in, "no available bandwidth groups\n");  in tb_attach_bandwidth_group()
180 		tb_port_dbg(in, "detached from bandwidth group %d\n", group->index);  in tb_detach_bandwidth_group()
625  * tb_consumed_usb3_pcie_bandwidth() - Consumed USB3/PCIe bandwidth over a single link
629  * @port: USB4 port the consumed bandwidth is calculated
630  * @consumed_up: Consumed upsream bandwidth (Mb/s)
631  * @consumed_down: Consumed downstream bandwidth (Mb/s)
633  * Calculates consumed USB3 and PCIe bandwidth at @port between path
673  * tb_consumed_dp_bandwidth() - Consumed DP bandwidth over a single link
677  * @port: USB4 port the consumed bandwidth is calculated
678  * @consumed_up: Consumed upsream bandwidth (Mb/s)
679  * @consumed_down: Consumed downstream bandwidth (Mb/s)
681  * Calculates consumed DP bandwidth at @port between path from @src_port
700 	 * their consumed bandwidth from the available.  in tb_consumed_dp_bandwidth()
717 		 * re-calculating estimated bandwidth.  in tb_consumed_dp_bandwidth()
750  * tb_maximum_bandwidth() - Maximum bandwidth over a single link
754  * @port: USB4 port the total bandwidth is calculated
755  * @max_up: Maximum upstream bandwidth (Mb/s)
756  * @max_down: Maximum downstream bandwidth (Mb/s)
757  * @include_asym: Include bandwidth if the link is switched from
760  * Returns maximum possible bandwidth in @max_up and @max_down over a
795 			 * this bandwidth as available (even though it  in tb_maximum_bandwidth()
828 			 * this bandwidth as available (even though it  in tb_maximum_bandwidth()
848 	tb_port_dbg(port, "link maximum bandwidth %d/%d Mb/s\n", *max_up, *max_down);  in tb_maximum_bandwidth()
853  * tb_available_bandwidth() - Available bandwidth for tunneling
857  * @available_up: Available bandwidth upstream (Mb/s)
858  * @available_down: Available bandwidth downstream (Mb/s)
859  * @include_asym: Include bandwidth if the link is switched from
862  * Calculates maximum available bandwidth for protocol tunneling between
864  * link bandwidth across all links reduced by currently consumed
865  * bandwidth on that link.
867  * If @include_asym is true then includes also bandwidth that can be
878 	/* Maximum possible bandwidth asymmetric Gen 4 link is 120 Gb/s */  in tb_available_bandwidth()
881 	/* Find the minimum available bandwidth over all links */  in tb_available_bandwidth()
942 	tb_tunnel_dbg(tunnel, "reclaiming unused bandwidth\n");  in tb_reclaim_usb3_bandwidth()
945 	 * Calculate available bandwidth for the first hop USB3 tunnel.  in tb_reclaim_usb3_bandwidth()
946 	 * That determines the whole USB3 bandwidth for this branch.  in tb_reclaim_usb3_bandwidth()
951 		tb_tunnel_warn(tunnel, "failed to calculate available bandwidth\n");  in tb_reclaim_usb3_bandwidth()
955 	tb_tunnel_dbg(tunnel, "available bandwidth %d/%d Mb/s\n", available_up,  in tb_reclaim_usb3_bandwidth()
1001 		/* Make all unused bandwidth available for the new tunnel */  in tb_tunnel_usb3()
1012 	tb_port_dbg(up, "available bandwidth for new USB3 tunnel %d/%d Mb/s\n",  in tb_tunnel_usb3()
1074  * @requested_up: Additional bandwidth (Mb/s) required upstream
1075  * @requested_down: Additional bandwidth (Mb/s) required downstream
1079  * in the opposite direction, if the bandwidth requirements
1184  * @requested_up: New lower bandwidth request upstream (Mb/s)
1185  * @requested_down: New lower bandwidth request downstream (Mb/s)
1189  * transition the link to symmetric if the currently consumed bandwidth
1301 	 * above into symmetric if bandwidth allows.  in tb_configure_link()
1491 		 * If bandwidth on a link is < asym_threshold  in tb_deactivate_and_free_tunnel()
1509 		 * bandwidth.  in tb_deactivate_and_free_tunnel()
1616 	tb_dbg(tb, "re-calculating bandwidth estimation for group %u\n",  in tb_recalc_estimated_bandwidth_for_group()
1634 			 * Since USB3 bandwidth is shared by all DP  in tb_recalc_estimated_bandwidth_for_group()
1637 			 * can release USB3 bandwidth just once and not  in tb_recalc_estimated_bandwidth_for_group()
1645 					"failed to release unused bandwidth\n");  in tb_recalc_estimated_bandwidth_for_group()
1655 				"failed to re-calculate estimated bandwidth\n");  in tb_recalc_estimated_bandwidth_for_group()
1660 		 * Estimated bandwidth includes:  in tb_recalc_estimated_bandwidth_for_group()
1661 		 *  - already allocated bandwidth for the DP tunnel  in tb_recalc_estimated_bandwidth_for_group()
1662 		 *  - available bandwidth along the path  in tb_recalc_estimated_bandwidth_for_group()
1663 		 *  - bandwidth allocated for USB 3.x but not used.  in tb_recalc_estimated_bandwidth_for_group()
1666 			      "re-calculated estimated bandwidth %u/%u Mb/s\n",  in tb_recalc_estimated_bandwidth_for_group()
1676 				       "failed to update estimated bandwidth\n");  in tb_recalc_estimated_bandwidth_for_group()
1683 	tb_dbg(tb, "bandwidth estimation for group %u done\n", group->index);  in tb_recalc_estimated_bandwidth_for_group()
1691 	tb_dbg(tb, "bandwidth consumption changed, re-calculating estimated bandwidth\n");  in tb_recalc_estimated_bandwidth()
1700 	tb_dbg(tb, "bandwidth re-calculation done\n");  in tb_recalc_estimated_bandwidth()
1785 	 * topology). For these try to share the DP bandwidth between  in tb_tunnel_one_dp()
1815 	/* Make all unused USB3 bandwidth available for the new DP tunnel */  in tb_tunnel_one_dp()
1818 		tb_warn(tb, "failed to release unused bandwidth\n");  in tb_tunnel_one_dp()
1827 	tb_dbg(tb, "available bandwidth for new DP tunnel %u/%u Mb/s\n",  in tb_tunnel_one_dp()
1852 	/* Update the domain with the new bandwidth estimation */  in tb_tunnel_one_dp()
2256 	tb_tunnel_dbg(tunnel, "bandwidth allocated currently %d/%d Mb/s\n",  in tb_alloc_dp_bandwidth()
2298 	tb_tunnel_dbg(tunnel, "corrected bandwidth request %d/%d Mb/s\n",  in tb_alloc_dp_bandwidth()
2304 			      "bandwidth request too high (%d/%d Mb/s > %d/%d Mb/s)\n",  in tb_alloc_dp_bandwidth()
2313 		 * If bandwidth on a link is < asym_threshold transition  in tb_alloc_dp_bandwidth()
2318 		 * If requested bandwidth is less or equal than what is  in tb_alloc_dp_bandwidth()
2322 		 * group the released bandwidth will be taken into  in tb_alloc_dp_bandwidth()
2330 	 * More bandwidth is requested. Release all the potential  in tb_alloc_dp_bandwidth()
2331 	 * bandwidth from USB3 first.  in tb_alloc_dp_bandwidth()
2340 	 * that we use with the normal bandwidth allocation).  in tb_alloc_dp_bandwidth()
2347 	tb_tunnel_dbg(tunnel, "bandwidth available for allocation %d/%d Mb/s\n",  in tb_alloc_dp_bandwidth()
2353 		 * If bandwidth on a link is >= asym_threshold  in tb_alloc_dp_bandwidth()
2366 			tb_tunnel_warn(tunnel, "failed to allocate bandwidth\n");  in tb_alloc_dp_bandwidth()
2396 		tb_warn(tb, "bandwidth request from non-existent router %llx\n",  in tb_handle_dp_bandwidth_request()
2403 		tb_port_warn(in, "bandwidth request to non-DP IN adapter\n");  in tb_handle_dp_bandwidth_request()
2407 	tb_port_dbg(in, "handling bandwidth allocation request\n");  in tb_handle_dp_bandwidth_request()
2410 		tb_port_warn(in, "bandwidth allocation mode not enabled\n");  in tb_handle_dp_bandwidth_request()
2417 			tb_port_dbg(in, "no bandwidth request active\n");  in tb_handle_dp_bandwidth_request()
2419 			tb_port_warn(in, "failed to read requested bandwidth\n");  in tb_handle_dp_bandwidth_request()
2424 	tb_port_dbg(in, "requested bandwidth %d Mb/s\n", requested_bw);  in tb_handle_dp_bandwidth_request()
2446 				       "not enough bandwidth available\n");  in tb_handle_dp_bandwidth_request()
2449 				       "failed to change bandwidth allocation\n");  in tb_handle_dp_bandwidth_request()
2452 			      "bandwidth allocation changed to %d/%d Mb/s\n",  in tb_handle_dp_bandwidth_request()