13  * struct sfp_bus - internal representation of a sfp bus
35  * @bus: a pointer to the &struct sfp_bus structure for the sfp module
47 int sfp_parse_port(struct sfp_bus *bus, const struct sfp_eeprom_id *id,  in sfp_parse_port()  argument
86 		dev_warn(bus->sfp_dev, "SFP: unknown connector id 0x%02x\n",  in sfp_parse_port()
110  * @bus: a pointer to the &struct sfp_bus structure for the sfp module
117 void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,  in sfp_parse_support()  argument
208 		dev_warn(bus->sfp_dev,  in sfp_parse_support()
246  * @bus: a pointer to the &struct sfp_bus structure for the sfp module
255 phy_interface_t sfp_select_interface(struct sfp_bus *bus,  in sfp_select_interface()  argument
277 	dev_warn(bus->sfp_dev, "Unable to ascertain link mode\n");  in sfp_select_interface()
286 static const struct sfp_upstream_ops *sfp_get_upstream_ops(struct sfp_bus *bus)  in sfp_get_upstream_ops()  argument
288 	return bus->registered ? bus->upstream_ops : NULL;  in sfp_get_upstream_ops()
324 	struct sfp_bus *bus = container_of(kref, struct sfp_bus, kref);  in sfp_bus_release()  local
326 	list_del(&bus->node);  in sfp_bus_release()
328 	kfree(bus);  in sfp_bus_release()
331 static void sfp_bus_put(struct sfp_bus *bus)  in sfp_bus_put()  argument
333 	kref_put_mutex(&bus->kref, sfp_bus_release, &sfp_mutex);  in sfp_bus_put()
336 static int sfp_register_bus(struct sfp_bus *bus)  in sfp_register_bus()  argument
338 	const struct sfp_upstream_ops *ops = bus->upstream_ops;  in sfp_register_bus()
343 			ops->link_down(bus->upstream);  in sfp_register_bus()
344 		if (ops->connect_phy && bus->phydev) {  in sfp_register_bus()
345 			ret = ops->connect_phy(bus->upstream, bus->phydev);  in sfp_register_bus()
350 	bus->socket_ops->attach(bus->sfp);  in sfp_register_bus()
351 	if (bus->started)  in sfp_register_bus()
352 		bus->socket_ops->start(bus->sfp);  in sfp_register_bus()
353 	bus->upstream_ops->attach(bus->upstream, bus);  in sfp_register_bus()
354 	bus->registered = true;  in sfp_register_bus()
358 static void sfp_unregister_bus(struct sfp_bus *bus)  in sfp_unregister_bus()  argument
360 	const struct sfp_upstream_ops *ops = bus->upstream_ops;  in sfp_unregister_bus()
362 	if (bus->registered) {  in sfp_unregister_bus()
363 		bus->upstream_ops->detach(bus->upstream, bus);  in sfp_unregister_bus()
364 		if (bus->started)  in sfp_unregister_bus()
365 			bus->socket_ops->stop(bus->sfp);  in sfp_unregister_bus()
366 		bus->socket_ops->detach(bus->sfp);  in sfp_unregister_bus()
367 		if (bus->phydev && ops && ops->disconnect_phy)  in sfp_unregister_bus()
368 			ops->disconnect_phy(bus->upstream);  in sfp_unregister_bus()
370 	bus->registered = false;  in sfp_unregister_bus()
375  * @bus: a pointer to the &struct sfp_bus structure for the sfp module
379  * the sfp bus specified by @bus.
383 int sfp_get_module_info(struct sfp_bus *bus, struct ethtool_modinfo *modinfo)  in sfp_get_module_info()  argument
385 	return bus->socket_ops->module_info(bus->sfp, modinfo);  in sfp_get_module_info()
391  * @bus: a pointer to the &struct sfp_bus structure for the sfp module
400 int sfp_get_module_eeprom(struct sfp_bus *bus, struct ethtool_eeprom *ee,  in sfp_get_module_eeprom()  argument
403 	return bus->socket_ops->module_eeprom(bus->sfp, ee, data);  in sfp_get_module_eeprom()
409  * @bus: a pointer to the &struct sfp_bus structure for the sfp module
416 void sfp_upstream_start(struct sfp_bus *bus)  in sfp_upstream_start()  argument
418 	if (bus->registered)  in sfp_upstream_start()
419 		bus->socket_ops->start(bus->sfp);  in sfp_upstream_start()
420 	bus->started = true;  in sfp_upstream_start()
426  * @bus: a pointer to the &struct sfp_bus structure for the sfp module
433 void sfp_upstream_stop(struct sfp_bus *bus)  in sfp_upstream_stop()  argument
435 	if (bus->registered)  in sfp_upstream_stop()
436 		bus->socket_ops->stop(bus->sfp);  in sfp_upstream_stop()
437 	bus->started = false;  in sfp_upstream_stop()
441 static void sfp_upstream_clear(struct sfp_bus *bus)  in sfp_upstream_clear()  argument
443 	bus->upstream_ops = NULL;  in sfp_upstream_clear()
444 	bus->upstream = NULL;  in sfp_upstream_clear()
449  * @fwnode: firmware node for the SFP bus
453  * Register the upstream device (eg, PHY) with the SFP bus. MAC drivers
463 	struct sfp_bus *bus = sfp_bus_get(fwnode);  in sfp_register_upstream()  local
466 	if (bus) {  in sfp_register_upstream()
468 		bus->upstream_ops = ops;  in sfp_register_upstream()
469 		bus->upstream = upstream;  in sfp_register_upstream()
471 		if (bus->sfp) {  in sfp_register_upstream()
472 			ret = sfp_register_bus(bus);  in sfp_register_upstream()
474 				sfp_upstream_clear(bus);  in sfp_register_upstream()
480 		sfp_bus_put(bus);  in sfp_register_upstream()
481 		bus = NULL;  in sfp_register_upstream()
484 	return bus;  in sfp_register_upstream()
489  * sfp_unregister_upstream() - Unregister sfp bus
490  * @bus: a pointer to the &struct sfp_bus structure for the sfp module
493  * module. @bus is returned from sfp_register_upstream().
495 void sfp_unregister_upstream(struct sfp_bus *bus)  in sfp_unregister_upstream()  argument
498 	if (bus->sfp)  in sfp_unregister_upstream()
499 		sfp_unregister_bus(bus);  in sfp_unregister_upstream()
500 	sfp_upstream_clear(bus);  in sfp_unregister_upstream()
503 	sfp_bus_put(bus);  in sfp_unregister_upstream()
508 int sfp_add_phy(struct sfp_bus *bus, struct phy_device *phydev)  in sfp_add_phy()  argument
510 	const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);  in sfp_add_phy()
514 		ret = ops->connect_phy(bus->upstream, phydev);  in sfp_add_phy()
517 		bus->phydev = phydev;  in sfp_add_phy()
523 void sfp_remove_phy(struct sfp_bus *bus)  in sfp_remove_phy()  argument
525 	const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);  in sfp_remove_phy()
528 		ops->disconnect_phy(bus->upstream);  in sfp_remove_phy()
529 	bus->phydev = NULL;  in sfp_remove_phy()
533 void sfp_link_up(struct sfp_bus *bus)  in sfp_link_up()  argument
535 	const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);  in sfp_link_up()
538 		ops->link_up(bus->upstream);  in sfp_link_up()
542 void sfp_link_down(struct sfp_bus *bus)  in sfp_link_down()  argument
544 	const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);  in sfp_link_down()
547 		ops->link_down(bus->upstream);  in sfp_link_down()
551 int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id)  in sfp_module_insert()  argument
553 	const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);  in sfp_module_insert()
557 		ret = ops->module_insert(bus->upstream, id);  in sfp_module_insert()
563 void sfp_module_remove(struct sfp_bus *bus)  in sfp_module_remove()  argument
565 	const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);  in sfp_module_remove()
568 		ops->module_remove(bus->upstream);  in sfp_module_remove()
572 static void sfp_socket_clear(struct sfp_bus *bus)  in sfp_socket_clear()  argument
574 	bus->sfp_dev = NULL;  in sfp_socket_clear()
575 	bus->sfp = NULL;  in sfp_socket_clear()
576 	bus->socket_ops = NULL;  in sfp_socket_clear()
582 	struct sfp_bus *bus = sfp_bus_get(dev->fwnode);  in sfp_register_socket()  local
585 	if (bus) {  in sfp_register_socket()
587 		bus->sfp_dev = dev;  in sfp_register_socket()
588 		bus->sfp = sfp;  in sfp_register_socket()
589 		bus->socket_ops = ops;  in sfp_register_socket()
591 		if (bus->upstream_ops) {  in sfp_register_socket()
592 			ret = sfp_register_bus(bus);  in sfp_register_socket()
594 				sfp_socket_clear(bus);  in sfp_register_socket()
600 		sfp_bus_put(bus);  in sfp_register_socket()
601 		bus = NULL;  in sfp_register_socket()
604 	return bus;  in sfp_register_socket()
608 void sfp_unregister_socket(struct sfp_bus *bus)  in sfp_unregister_socket()  argument
611 	if (bus->upstream_ops)  in sfp_unregister_socket()
612 		sfp_unregister_bus(bus);  in sfp_unregister_socket()
613 	sfp_socket_clear(bus);  in sfp_unregister_socket()
616 	sfp_bus_put(bus);  in sfp_unregister_socket()