drivers/thunderbolt/path.c

16 static void tb_dump_hop(const struct tb_path_hop *hop, const struct tb_regs_hop *regs)
18 	const struct tb_port *port = hop->in_port;
21 		    hop->in_hop_index, regs->out_port, regs->next_hop);
38 	struct tb_regs_hop hop;
48 		ret = tb_port_read(port, &hop, TB_CFG_HOPS, 2 * hopid, 2);
54 		if (!hop.enable)
57 		out_port = &sw->ports[hop.out_port];
58 		hopid = hop.next_hop;
107 	struct tb_regs_hop hop;
134 		ret = tb_port_read(p, &hop, TB_CFG_HOPS, 2 * h, 2);
140 		/* If the hop is not enabled we got an incomplete path */
141 		if (!hop.enable)
144 		out_port = &sw->ports[hop.out_port];
148 		h = hop.next_hop;
180 		ret = tb_port_read(p, &hop, TB_CFG_HOPS, 2 * h, 2);
189 		out_port = &sw->ports[hop.out_port];
190 		next_hop = hop.next_hop;
204 		tb_dump_hop(&path->hops[i], &hop);
267 	/* Each hop takes two ports */
364 			const struct tb_path_hop *hop = &path->hops[i];
366 			if (hop->in_port)
367 				tb_port_release_in_hopid(hop->in_port,
368 							 hop->in_hop_index);
369 			if (hop->out_port)
370 				tb_port_release_out_hopid(hop->out_port,
371 							  hop->next_hop_index);
387 				     "nfc credits deallocation failed for hop %d\n",
395 	struct tb_regs_hop hop;
400 	ret = tb_port_read(port, &hop, TB_CFG_HOPS, 2 * hop_index, 2);
405 	if (!hop.enable)
408 	hop.enable = 0;
410 	ret = tb_port_write(port, &hop, TB_CFG_HOPS, 2 * hop_index, 2);
417 		ret = tb_port_read(port, &hop, TB_CFG_HOPS, 2 * hop_index, 2);
421 		if (!hop.pending) {
430 					hop.ingress_fc = 0;
431 					hop.ingress_shared_buffer = 0;
433 				hop.egress_fc = 0;
434 				hop.egress_shared_buffer = 0;
436 				return tb_port_write(port, &hop, TB_CFG_HOPS,
472 				     "hop deactivation failed for hop %d, index %d\n",
498  * Activate a path starting with the last hop and iterating backwards. The
541 		struct tb_regs_hop hop = { 0 };
548 		hop.next_hop = path->hops[i].next_hop_index;
549 		hop.out_port = path->hops[i].out_port->port;
550 		hop.initial_credits = path->hops[i].initial_credits;
551 		hop.pmps = path->hops[i].pm_support;
552 		hop.unknown1 = 0;
553 		hop.enable = 1;
559 		hop.weight = path->weight;
560 		hop.unknown2 = 0;
561 		hop.priority = path->priority;
562 		hop.drop_packages = path->drop_packages;
563 		hop.counter = path->hops[i].in_counter_index;
564 		hop.counter_enable = path->hops[i].in_counter_index != -1;
565 		hop.ingress_fc = path->ingress_fc_enable & in_mask;
566 		hop.egress_fc = path->egress_fc_enable & out_mask;
567 		hop.ingress_shared_buffer = path->ingress_shared_buffer
569 		hop.egress_shared_buffer = path->egress_shared_buffer
571 		hop.unknown3 = 0;
573 		tb_port_dbg(path->hops[i].in_port, "Writing hop %d\n", i);
574 		tb_dump_hop(&path->hops[i], &hop);
575 		res = tb_port_write(path->hops[i].in_port, &hop, TB_CFG_HOPS,