18  * struct sfp_bus - internal representation of a sfp bus
48 		// Alcatel Lucent G-010S-P can operate at 2500base-X, but
54 		// Alcatel Lucent G-010S-A can operate at 2500base-X, but
60 		// Huawei MA5671A can operate at 2500base-X, but report 1.2GBd
95 	vs = sfp_strlen(id->base.vendor_name, ARRAY_SIZE(id->base.vendor_name));  in sfp_lookup_quirk()
96 	ps = sfp_strlen(id->base.vendor_pn, ARRAY_SIZE(id->base.vendor_pn));  in sfp_lookup_quirk()
99 		if (sfp_match(q->vendor, id->base.vendor_name, vs) &&  in sfp_lookup_quirk()
100 		    sfp_match(q->part, id->base.vendor_pn, ps))  in sfp_lookup_quirk()
106  * sfp_parse_port() - Parse the EEPROM base ID, setting the port type
113  * %PORT_TP, %PORT_FIBRE or %PORT_OTHER. If @support is non-%NULL,
125 	switch (id->base.connector) {  in sfp_parse_port()
144 		if (id->base.e1000_base_t) {  in sfp_parse_port()
158 		dev_warn(bus->sfp_dev, "SFP: unknown connector id 0x%02x\n",  in sfp_parse_port()
159 			 id->base.connector);  in sfp_parse_port()
181  * sfp_parse_support() - Parse the eeprom id for supported link modes
197 	if (id->base.br_nominal) {  in sfp_parse_support()
198 		if (id->base.br_nominal != 255) {  in sfp_parse_support()
199 			br_nom = id->base.br_nominal * 100;  in sfp_parse_support()
200 			br_min = br_nom - id->base.br_nominal * id->ext.br_min;  in sfp_parse_support()
201 			br_max = br_nom + id->base.br_nominal * id->ext.br_max;  in sfp_parse_support()
202 		} else if (id->ext.br_max) {  in sfp_parse_support()
203 			br_nom = 250 * id->ext.br_max;  in sfp_parse_support()
204 			br_max = br_nom + br_nom * id->ext.br_min / 100;  in sfp_parse_support()
205 			br_min = br_nom - br_nom * id->ext.br_min / 100;  in sfp_parse_support()
212 		if (br_min == br_max && id->base.sfp_ct_passive)  in sfp_parse_support()
217 	if (id->base.e10g_base_sr)  in sfp_parse_support()
219 	if (id->base.e10g_base_lr)  in sfp_parse_support()
221 	if (id->base.e10g_base_lrm)  in sfp_parse_support()
223 	if (id->base.e10g_base_er)  in sfp_parse_support()
225 	if (id->base.e1000_base_sx ||  in sfp_parse_support()
226 	    id->base.e1000_base_lx ||  in sfp_parse_support()
227 	    id->base.e1000_base_cx)  in sfp_parse_support()
228 		phylink_set(modes, 1000baseX_Full);  in sfp_parse_support()
229 	if (id->base.e1000_base_t) {  in sfp_parse_support()
230 		phylink_set(modes, 1000baseT_Half);  in sfp_parse_support()
231 		phylink_set(modes, 1000baseT_Full);  in sfp_parse_support()
234 	/* 1000Base-PX or 1000Base-BX10 */  in sfp_parse_support()
235 	if ((id->base.e_base_px || id->base.e_base_bx10) &&  in sfp_parse_support()
237 		phylink_set(modes, 1000baseX_Full);  in sfp_parse_support()
242 	if ((id->base.sfp_ct_passive || id->base.sfp_ct_active) && br_nom) {  in sfp_parse_support()
249 			phylink_set(modes, 1000baseX_Full);  in sfp_parse_support()
251 	if (id->base.sfp_ct_passive) {  in sfp_parse_support()
252 		if (id->base.passive.sff8431_app_e)  in sfp_parse_support()
255 	if (id->base.sfp_ct_active) {  in sfp_parse_support()
256 		if (id->base.active.sff8431_app_e ||  in sfp_parse_support()
257 		    id->base.active.sff8431_lim) {  in sfp_parse_support()
262 	switch (id->base.extended_cc) {  in sfp_parse_support()
265 	case 0x02: /* 100Gbase-SR4 or 25Gbase-SR */  in sfp_parse_support()
269 	case 0x03: /* 100Gbase-LR4 or 25Gbase-LR */  in sfp_parse_support()
270 	case 0x04: /* 100Gbase-ER4 or 25Gbase-ER */  in sfp_parse_support()
273 	case 0x0b: /* 100Gbase-CR4 or 25Gbase-CR CA-L */  in sfp_parse_support()
274 	case 0x0c: /* 25Gbase-CR CA-S */  in sfp_parse_support()
275 	case 0x0d: /* 25Gbase-CR CA-N */  in sfp_parse_support()
280 		dev_warn(bus->sfp_dev,  in sfp_parse_support()
281 			 "Unknown/unsupported extended compliance code: 0x%02x\n",  in sfp_parse_support()
282 			 id->base.extended_cc);  in sfp_parse_support()
287 	if (id->base.fc_speed_100 ||  in sfp_parse_support()
288 	    id->base.fc_speed_200 ||  in sfp_parse_support()
289 	    id->base.fc_speed_400) {  in sfp_parse_support()
290 		if (id->base.br_nominal >= 31)  in sfp_parse_support()
292 		if (id->base.br_nominal >= 12)  in sfp_parse_support()
293 			phylink_set(modes, 1000baseX_Full);  in sfp_parse_support()
298 	 * modules (eg, 1310nm/1550nm) are not 1000BASE-BX compliant due to  in sfp_parse_support()
302 		/* If the encoding and bit rate allows 1000baseX */  in sfp_parse_support()
303 		if (id->base.encoding == SFP_ENCODING_8B10B && br_nom &&  in sfp_parse_support()
305 			phylink_set(modes, 1000baseX_Full);  in sfp_parse_support()
308 	if (bus->sfp_quirk)  in sfp_parse_support()
309 		bus->sfp_quirk->modes(id, modes);  in sfp_parse_support()
320  * sfp_select_interface() - Select appropriate phy_interface_t mode
344 	if (id->base.e1000_base_t ||  in sfp_select_interface()
345 	    id->base.e100_base_lx ||  in sfp_select_interface()
346 	    id->base.e100_base_fx)  in sfp_select_interface()
349 	if (phylink_test(link_modes, 1000baseX_Full))  in sfp_select_interface()
352 	dev_warn(bus->sfp_dev, "Unable to ascertain link mode\n");  in sfp_select_interface()
363 	return bus->registered ? bus->upstream_ops : NULL;  in sfp_get_upstream_ops()
375 		if (sfp->fwnode == fwnode) {  in sfp_bus_get()
376 			kref_get(&sfp->kref);  in sfp_bus_get()
383 		kref_init(&new->kref);  in sfp_bus_get()
384 		new->fwnode = fwnode;  in sfp_bus_get()
385 		list_add(&new->node, &sfp_buses);  in sfp_bus_get()
401 	list_del(&bus->node);  in sfp_bus_release()
408 	kref_put_mutex(&bus->kref, sfp_bus_release, &sfp_mutex);  in sfp_bus_put()
413 	const struct sfp_upstream_ops *ops = bus->upstream_ops;  in sfp_register_bus()
417 		if (ops->link_down)  in sfp_register_bus()
418 			ops->link_down(bus->upstream);  in sfp_register_bus()
419 		if (ops->connect_phy && bus->phydev) {  in sfp_register_bus()
420 			ret = ops->connect_phy(bus->upstream, bus->phydev);  in sfp_register_bus()
425 	bus->socket_ops->attach(bus->sfp);  in sfp_register_bus()
426 	if (bus->started)  in sfp_register_bus()
427 		bus->socket_ops->start(bus->sfp);  in sfp_register_bus()
428 	bus->netdev->sfp_bus = bus;  in sfp_register_bus()
429 	bus->registered = true;  in sfp_register_bus()
435 	const struct sfp_upstream_ops *ops = bus->upstream_ops;  in sfp_unregister_bus()
437 	bus->netdev->sfp_bus = NULL;  in sfp_unregister_bus()
438 	if (bus->registered) {  in sfp_unregister_bus()
439 		if (bus->started)  in sfp_unregister_bus()
440 			bus->socket_ops->stop(bus->sfp);  in sfp_unregister_bus()
441 		bus->socket_ops->detach(bus->sfp);  in sfp_unregister_bus()
442 		if (bus->phydev && ops && ops->disconnect_phy)  in sfp_unregister_bus()
443 			ops->disconnect_phy(bus->upstream);  in sfp_unregister_bus()
445 	bus->registered = false;  in sfp_unregister_bus()
449  * sfp_get_module_info() - Get the ethtool_modinfo for a SFP module
460 	return bus->socket_ops->module_info(bus->sfp, modinfo);  in sfp_get_module_info()
465  * sfp_get_module_eeprom() - Read the SFP module EEPROM
468  * @data: buffer to contain the EEPROM data (must be at least @ee->len bytes)
478 	return bus->socket_ops->module_eeprom(bus->sfp, ee, data);  in sfp_get_module_eeprom()
483  * sfp_upstream_start() - Inform the SFP that the network device is up
493 	if (bus->registered)  in sfp_upstream_start()
494 		bus->socket_ops->start(bus->sfp);  in sfp_upstream_start()
495 	bus->started = true;  in sfp_upstream_start()
500  * sfp_upstream_stop() - Inform the SFP that the network device is down
510 	if (bus->registered)  in sfp_upstream_stop()
511 		bus->socket_ops->stop(bus->sfp);  in sfp_upstream_stop()
512 	bus->started = false;  in sfp_upstream_stop()
518 	bus->upstream_ops = NULL;  in sfp_upstream_clear()
519 	bus->upstream = NULL;  in sfp_upstream_clear()
520 	bus->netdev = NULL;  in sfp_upstream_clear()
524  * sfp_register_upstream() - Register the neighbouring device
545 		bus->upstream_ops = ops;  in sfp_register_upstream()
546 		bus->upstream = upstream;  in sfp_register_upstream()
547 		bus->netdev = ndev;  in sfp_register_upstream()
549 		if (bus->sfp) {  in sfp_register_upstream()
567  * sfp_unregister_upstream() - Unregister sfp bus
576 	if (bus->sfp)  in sfp_unregister_upstream()
591 	if (ops && ops->connect_phy)  in sfp_add_phy()
592 		ret = ops->connect_phy(bus->upstream, phydev);  in sfp_add_phy()
595 		bus->phydev = phydev;  in sfp_add_phy()
605 	if (ops && ops->disconnect_phy)  in sfp_remove_phy()
606 		ops->disconnect_phy(bus->upstream);  in sfp_remove_phy()
607 	bus->phydev = NULL;  in sfp_remove_phy()
615 	if (ops && ops->link_up)  in sfp_link_up()
616 		ops->link_up(bus->upstream);  in sfp_link_up()
624 	if (ops && ops->link_down)  in sfp_link_down()
625 		ops->link_down(bus->upstream);  in sfp_link_down()
634 	bus->sfp_quirk = sfp_lookup_quirk(id);  in sfp_module_insert()
636 	if (ops && ops->module_insert)  in sfp_module_insert()
637 		ret = ops->module_insert(bus->upstream, id);  in sfp_module_insert()
647 	if (ops && ops->module_remove)  in sfp_module_remove()
648 		ops->module_remove(bus->upstream);  in sfp_module_remove()
650 	bus->sfp_quirk = NULL;  in sfp_module_remove()
656 	bus->sfp_dev = NULL;  in sfp_socket_clear()
657 	bus->sfp = NULL;  in sfp_socket_clear()
658 	bus->socket_ops = NULL;  in sfp_socket_clear()
664 	struct sfp_bus *bus = sfp_bus_get(dev->fwnode);  in sfp_register_socket()
669 		bus->sfp_dev = dev;  in sfp_register_socket()
670 		bus->sfp = sfp;  in sfp_register_socket()
671 		bus->socket_ops = ops;  in sfp_register_socket()
673 		if (bus->netdev) {  in sfp_register_socket()
693 	if (bus->netdev)  in sfp_unregister_socket()