1 // SPDX-License-Identifier: GPL-2.0-only
2 #include <linux/export.h>
3 #include <linux/kref.h>
4 #include <linux/list.h>
5 #include <linux/mutex.h>
6 #include <linux/phylink.h>
7 #include <linux/property.h>
8 #include <linux/rtnetlink.h>
9 #include <linux/slab.h>
14 * struct sfp_bus - internal representation of a sfp bus
19 struct list_head node;
20 const struct fwnode_handle *fwnode;
22 const struct sfp_socket_ops *socket_ops;
23 struct device *sfp_dev;
25 const struct sfp_quirk *sfp_quirk;
27 const struct sfp_upstream_ops *upstream_ops;
29 struct phy_device *phydev;
36 * sfp_parse_port() - Parse the EEPROM base ID, setting the port type
37 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
38 * @id: a pointer to the module's &struct sfp_eeprom_id
39 * @support: optional pointer to an array of unsigned long for the
40 * ethtool support mask
42 * Parse the EEPROM identification given in @id, and return one of
43 * %PORT_TP, %PORT_FIBRE or %PORT_OTHER. If @support is non-%NULL,
44 * also set the ethtool %ETHTOOL_LINK_MODE_xxx_BIT corresponding with
47 * If the port type is not known, returns %PORT_OTHER.
49 int sfp_parse_port(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
50 unsigned long *support)
54 /* port is the physical connector, set this from the connector field. */
55 switch (id->base.connector) {
56 case SFF8024_CONNECTOR_SC:
57 case SFF8024_CONNECTOR_FIBERJACK:
58 case SFF8024_CONNECTOR_LC:
59 case SFF8024_CONNECTOR_MT_RJ:
60 case SFF8024_CONNECTOR_MU:
61 case SFF8024_CONNECTOR_OPTICAL_PIGTAIL:
62 case SFF8024_CONNECTOR_MPO_1X12:
63 case SFF8024_CONNECTOR_MPO_2X16:
67 case SFF8024_CONNECTOR_RJ45:
71 case SFF8024_CONNECTOR_COPPER_PIGTAIL:
75 case SFF8024_CONNECTOR_UNSPEC:
76 if (id->base.e1000_base_t) {
81 case SFF8024_CONNECTOR_SG: /* guess */
82 case SFF8024_CONNECTOR_HSSDC_II:
83 case SFF8024_CONNECTOR_NOSEPARATE:
84 case SFF8024_CONNECTOR_MXC_2X16:
88 dev_warn(bus->sfp_dev, "SFP: unknown connector id 0x%02x\n",
97 phylink_set(support, FIBRE);
101 phylink_set(support, TP);
108 EXPORT_SYMBOL_GPL(sfp_parse_port);
111 * sfp_may_have_phy() - indicate whether the module may have a PHY
112 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
113 * @id: a pointer to the module's &struct sfp_eeprom_id
115 * Parse the EEPROM identification given in @id, and return whether
116 * this module may have a PHY.
118 bool sfp_may_have_phy(struct sfp_bus *bus, const struct sfp_eeprom_id *id)
120 if (id->base.e1000_base_t)
123 if (id->base.phys_id != SFF8024_ID_DWDM_SFP) {
124 switch (id->base.extended_cc) {
125 case SFF8024_ECC_10GBASE_T_SFI:
126 case SFF8024_ECC_10GBASE_T_SR:
127 case SFF8024_ECC_5GBASE_T:
128 case SFF8024_ECC_2_5GBASE_T:
135 EXPORT_SYMBOL_GPL(sfp_may_have_phy);
138 * sfp_parse_support() - Parse the eeprom id for supported link modes
139 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
140 * @id: a pointer to the module's &struct sfp_eeprom_id
141 * @support: pointer to an array of unsigned long for the ethtool support mask
142 * @interfaces: pointer to an array of unsigned long for phy interface modes
145 * Parse the EEPROM identification information and derive the supported
146 * ethtool link modes for the module.
148 void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
149 unsigned long *support, unsigned long *interfaces)
151 unsigned int br_min, br_nom, br_max;
152 __ETHTOOL_DECLARE_LINK_MODE_MASK(modes) = { 0, };
154 phylink_set(modes, Autoneg);
155 phylink_set(modes, Pause);
156 phylink_set(modes, Asym_Pause);
158 /* Decode the bitrate information to MBd */
159 br_min = br_nom = br_max = 0;
160 if (id->base.br_nominal) {
161 if (id->base.br_nominal != 255) {
162 br_nom = id->base.br_nominal * 100;
163 br_min = br_nom - id->base.br_nominal * id->ext.br_min;
164 br_max = br_nom + id->base.br_nominal * id->ext.br_max;
165 } else if (id->ext.br_max) {
166 br_nom = 250 * id->ext.br_max;
167 br_max = br_nom + br_nom * id->ext.br_min / 100;
168 br_min = br_nom - br_nom * id->ext.br_min / 100;
171 /* When using passive cables, in case neither BR,min nor BR,max
172 * are specified, set br_min to 0 as the nominal value is then
173 * used as the maximum.
175 if (br_min == br_max && id->base.sfp_ct_passive)
179 /* Set ethtool support from the compliance fields. */
180 if (id->base.e10g_base_sr) {
181 phylink_set(modes, 10000baseSR_Full);
182 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
184 if (id->base.e10g_base_lr) {
185 phylink_set(modes, 10000baseLR_Full);
186 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
188 if (id->base.e10g_base_lrm) {
189 phylink_set(modes, 10000baseLRM_Full);
190 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
192 if (id->base.e10g_base_er) {
193 phylink_set(modes, 10000baseER_Full);
194 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
196 if (id->base.e1000_base_sx ||
197 id->base.e1000_base_lx ||
198 id->base.e1000_base_cx) {
199 phylink_set(modes, 1000baseX_Full);
200 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
202 if (id->base.e1000_base_t) {
203 phylink_set(modes, 1000baseT_Half);
204 phylink_set(modes, 1000baseT_Full);
205 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
206 __set_bit(PHY_INTERFACE_MODE_SGMII, interfaces);
209 /* 1000Base-PX or 1000Base-BX10 */
210 if ((id->base.e_base_px || id->base.e_base_bx10) &&
211 br_min <= 1300 && br_max >= 1200) {
212 phylink_set(modes, 1000baseX_Full);
213 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
216 /* 100Base-FX, 100Base-LX, 100Base-PX, 100Base-BX10 */
217 if (id->base.e100_base_fx || id->base.e100_base_lx) {
218 phylink_set(modes, 100baseFX_Full);
219 __set_bit(PHY_INTERFACE_MODE_100BASEX, interfaces);
221 if ((id->base.e_base_px || id->base.e_base_bx10) && br_nom == 100) {
222 phylink_set(modes, 100baseFX_Full);
223 __set_bit(PHY_INTERFACE_MODE_100BASEX, interfaces);
226 /* For active or passive cables, select the link modes
227 * based on the bit rates and the cable compliance bytes.
229 if ((id->base.sfp_ct_passive || id->base.sfp_ct_active) && br_nom) {
230 /* This may look odd, but some manufacturers use 12000MBd */
231 if (br_min <= 12000 && br_max >= 10300) {
232 phylink_set(modes, 10000baseCR_Full);
233 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
235 if (br_min <= 3200 && br_max >= 3100) {
236 phylink_set(modes, 2500baseX_Full);
237 __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
239 if (br_min <= 1300 && br_max >= 1200) {
240 phylink_set(modes, 1000baseX_Full);
241 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
244 if (id->base.sfp_ct_passive) {
245 if (id->base.passive.sff8431_app_e) {
246 phylink_set(modes, 10000baseCR_Full);
247 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
250 if (id->base.sfp_ct_active) {
251 if (id->base.active.sff8431_app_e ||
252 id->base.active.sff8431_lim) {
253 phylink_set(modes, 10000baseCR_Full);
254 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
258 switch (id->base.extended_cc) {
259 case SFF8024_ECC_UNSPEC:
261 case SFF8024_ECC_100GBASE_SR4_25GBASE_SR:
262 phylink_set(modes, 100000baseSR4_Full);
263 phylink_set(modes, 25000baseSR_Full);
264 __set_bit(PHY_INTERFACE_MODE_25GBASER, interfaces);
266 case SFF8024_ECC_100GBASE_LR4_25GBASE_LR:
267 case SFF8024_ECC_100GBASE_ER4_25GBASE_ER:
268 phylink_set(modes, 100000baseLR4_ER4_Full);
270 case SFF8024_ECC_100GBASE_CR4:
271 phylink_set(modes, 100000baseCR4_Full);
273 case SFF8024_ECC_25GBASE_CR_S:
274 case SFF8024_ECC_25GBASE_CR_N:
275 phylink_set(modes, 25000baseCR_Full);
276 __set_bit(PHY_INTERFACE_MODE_25GBASER, interfaces);
278 case SFF8024_ECC_10GBASE_T_SFI:
279 case SFF8024_ECC_10GBASE_T_SR:
280 phylink_set(modes, 10000baseT_Full);
281 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
283 case SFF8024_ECC_5GBASE_T:
284 phylink_set(modes, 5000baseT_Full);
285 __set_bit(PHY_INTERFACE_MODE_5GBASER, interfaces);
287 case SFF8024_ECC_2_5GBASE_T:
288 phylink_set(modes, 2500baseT_Full);
289 __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
292 dev_warn(bus->sfp_dev,
293 "Unknown/unsupported extended compliance code: 0x%02x\n",
294 id->base.extended_cc);
298 /* For fibre channel SFP, derive possible BaseX modes */
299 if (id->base.fc_speed_100 ||
300 id->base.fc_speed_200 ||
301 id->base.fc_speed_400) {
302 if (id->base.br_nominal >= 31) {
303 phylink_set(modes, 2500baseX_Full);
304 __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
306 if (id->base.br_nominal >= 12) {
307 phylink_set(modes, 1000baseX_Full);
308 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
312 /* If we haven't discovered any modes that this module supports, try
313 * the bitrate to determine supported modes. Some BiDi modules (eg,
314 * 1310nm/1550nm) are not 1000BASE-BX compliant due to the differing
315 * wavelengths, so do not set any transceiver bits.
317 * Do the same for modules supporting 2500BASE-X. Note that some
318 * modules use 2500Mbaud rather than 3100 or 3200Mbaud for
319 * 2500BASE-X, so we allow some slack here.
321 if (bitmap_empty(modes, __ETHTOOL_LINK_MODE_MASK_NBITS) && br_nom) {
322 if (br_min <= 1300 && br_max >= 1200) {
323 phylink_set(modes, 1000baseX_Full);
324 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
326 if (br_min <= 3200 && br_max >= 2500) {
327 phylink_set(modes, 2500baseX_Full);
328 __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
332 if (bus->sfp_quirk && bus->sfp_quirk->modes)
333 bus->sfp_quirk->modes(id, modes, interfaces);
335 linkmode_or(support, support, modes);
337 EXPORT_SYMBOL_GPL(sfp_parse_support);
340 * sfp_select_interface() - Select appropriate phy_interface_t mode
341 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
342 * @link_modes: ethtool link modes mask
344 * Derive the phy_interface_t mode for the SFP module from the link
347 phy_interface_t sfp_select_interface(struct sfp_bus *bus,
348 unsigned long *link_modes)
350 if (phylink_test(link_modes, 25000baseCR_Full) ||
351 phylink_test(link_modes, 25000baseKR_Full) ||
352 phylink_test(link_modes, 25000baseSR_Full))
353 return PHY_INTERFACE_MODE_25GBASER;
355 if (phylink_test(link_modes, 10000baseCR_Full) ||
356 phylink_test(link_modes, 10000baseSR_Full) ||
357 phylink_test(link_modes, 10000baseLR_Full) ||
358 phylink_test(link_modes, 10000baseLRM_Full) ||
359 phylink_test(link_modes, 10000baseER_Full) ||
360 phylink_test(link_modes, 10000baseT_Full))
361 return PHY_INTERFACE_MODE_10GBASER;
363 if (phylink_test(link_modes, 5000baseT_Full))
364 return PHY_INTERFACE_MODE_5GBASER;
366 if (phylink_test(link_modes, 2500baseX_Full))
367 return PHY_INTERFACE_MODE_2500BASEX;
369 if (phylink_test(link_modes, 1000baseT_Half) ||
370 phylink_test(link_modes, 1000baseT_Full))
371 return PHY_INTERFACE_MODE_SGMII;
373 if (phylink_test(link_modes, 1000baseX_Full))
374 return PHY_INTERFACE_MODE_1000BASEX;
376 if (phylink_test(link_modes, 100baseFX_Full))
377 return PHY_INTERFACE_MODE_100BASEX;
379 dev_warn(bus->sfp_dev, "Unable to ascertain link mode\n");
381 return PHY_INTERFACE_MODE_NA;
383 EXPORT_SYMBOL_GPL(sfp_select_interface);
385 static LIST_HEAD(sfp_buses);
386 static DEFINE_MUTEX(sfp_mutex);
388 static const struct sfp_upstream_ops *sfp_get_upstream_ops(struct sfp_bus *bus)
390 return bus->registered ? bus->upstream_ops : NULL;
393 static struct sfp_bus *sfp_bus_get(const struct fwnode_handle *fwnode)
395 struct sfp_bus *sfp, *new, *found = NULL;
397 new = kzalloc(sizeof(*new), GFP_KERNEL);
399 mutex_lock(&sfp_mutex);
401 list_for_each_entry(sfp, &sfp_buses, node) {
402 if (sfp->fwnode == fwnode) {
403 kref_get(&sfp->kref);
410 kref_init(&new->kref);
411 new->fwnode = fwnode;
412 list_add(&new->node, &sfp_buses);
417 mutex_unlock(&sfp_mutex);
424 static void sfp_bus_release(struct kref *kref)
426 struct sfp_bus *bus = container_of(kref, struct sfp_bus, kref);
428 list_del(&bus->node);
429 mutex_unlock(&sfp_mutex);
434 * sfp_bus_put() - put a reference on the &struct sfp_bus
435 * @bus: the &struct sfp_bus found via sfp_bus_find_fwnode()
437 * Put a reference on the &struct sfp_bus and free the underlying structure
438 * if this was the last reference.
440 void sfp_bus_put(struct sfp_bus *bus)
443 kref_put_mutex(&bus->kref, sfp_bus_release, &sfp_mutex);
445 EXPORT_SYMBOL_GPL(sfp_bus_put);
447 static int sfp_register_bus(struct sfp_bus *bus)
449 const struct sfp_upstream_ops *ops = bus->upstream_ops;
454 ops->link_down(bus->upstream);
455 if (ops->connect_phy && bus->phydev) {
456 ret = ops->connect_phy(bus->upstream, bus->phydev);
461 bus->registered = true;
462 bus->socket_ops->attach(bus->sfp);
464 bus->socket_ops->start(bus->sfp);
465 bus->upstream_ops->attach(bus->upstream, bus);
469 static void sfp_unregister_bus(struct sfp_bus *bus)
471 const struct sfp_upstream_ops *ops = bus->upstream_ops;
473 if (bus->registered) {
474 bus->upstream_ops->detach(bus->upstream, bus);
476 bus->socket_ops->stop(bus->sfp);
477 bus->socket_ops->detach(bus->sfp);
478 if (bus->phydev && ops && ops->disconnect_phy)
479 ops->disconnect_phy(bus->upstream);
481 bus->registered = false;
485 * sfp_get_module_info() - Get the ethtool_modinfo for a SFP module
486 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
487 * @modinfo: a &struct ethtool_modinfo
489 * Fill in the type and eeprom_len parameters in @modinfo for a module on
490 * the sfp bus specified by @bus.
492 * Returns 0 on success or a negative errno number.
494 int sfp_get_module_info(struct sfp_bus *bus, struct ethtool_modinfo *modinfo)
496 return bus->socket_ops->module_info(bus->sfp, modinfo);
498 EXPORT_SYMBOL_GPL(sfp_get_module_info);
501 * sfp_get_module_eeprom() - Read the SFP module EEPROM
502 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
503 * @ee: a &struct ethtool_eeprom
504 * @data: buffer to contain the EEPROM data (must be at least @ee->len bytes)
506 * Read the EEPROM as specified by the supplied @ee. See the documentation
507 * for &struct ethtool_eeprom for the region to be read.
509 * Returns 0 on success or a negative errno number.
511 int sfp_get_module_eeprom(struct sfp_bus *bus, struct ethtool_eeprom *ee,
514 return bus->socket_ops->module_eeprom(bus->sfp, ee, data);
516 EXPORT_SYMBOL_GPL(sfp_get_module_eeprom);
519 * sfp_get_module_eeprom_by_page() - Read a page from the SFP module EEPROM
520 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
521 * @page: a &struct ethtool_module_eeprom
522 * @extack: extack for reporting problems
524 * Read an EEPROM page as specified by the supplied @page. See the
525 * documentation for &struct ethtool_module_eeprom for the page to be read.
527 * Returns 0 on success or a negative errno number. More error
528 * information might be provided via extack
530 int sfp_get_module_eeprom_by_page(struct sfp_bus *bus,
531 const struct ethtool_module_eeprom *page,
532 struct netlink_ext_ack *extack)
534 return bus->socket_ops->module_eeprom_by_page(bus->sfp, page, extack);
536 EXPORT_SYMBOL_GPL(sfp_get_module_eeprom_by_page);
539 * sfp_upstream_start() - Inform the SFP that the network device is up
540 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
542 * Inform the SFP socket that the network device is now up, so that the
543 * module can be enabled by allowing TX_DISABLE to be deasserted. This
544 * should be called from the network device driver's &struct net_device_ops
547 void sfp_upstream_start(struct sfp_bus *bus)
550 bus->socket_ops->start(bus->sfp);
553 EXPORT_SYMBOL_GPL(sfp_upstream_start);
556 * sfp_upstream_stop() - Inform the SFP that the network device is down
557 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
559 * Inform the SFP socket that the network device is now up, so that the
560 * module can be disabled by asserting TX_DISABLE, disabling the laser
561 * in optical modules. This should be called from the network device
562 * driver's &struct net_device_ops ndo_stop() method.
564 void sfp_upstream_stop(struct sfp_bus *bus)
567 bus->socket_ops->stop(bus->sfp);
568 bus->started = false;
570 EXPORT_SYMBOL_GPL(sfp_upstream_stop);
572 static void sfp_upstream_clear(struct sfp_bus *bus)
574 bus->upstream_ops = NULL;
575 bus->upstream = NULL;
579 * sfp_bus_find_fwnode() - parse and locate the SFP bus from fwnode
580 * @fwnode: firmware node for the parent device (MAC or PHY)
582 * Parse the parent device's firmware node for a SFP bus, and locate
583 * the sfp_bus structure, incrementing its reference count. This must
584 * be put via sfp_bus_put() when done.
587 * - on success, a pointer to the sfp_bus structure,
588 * - %NULL if no SFP is specified,
589 * - on failure, an error pointer value:
591 * - corresponding to the errors detailed for
592 * fwnode_property_get_reference_args().
593 * - %-ENOMEM if we failed to allocate the bus.
594 * - an error from the upstream's connect_phy() method.
596 struct sfp_bus *sfp_bus_find_fwnode(const struct fwnode_handle *fwnode)
598 struct fwnode_reference_args ref;
602 ret = fwnode_property_get_reference_args(fwnode, "sfp", NULL,
609 if (!fwnode_device_is_available(ref.fwnode)) {
610 fwnode_handle_put(ref.fwnode);
614 bus = sfp_bus_get(ref.fwnode);
615 fwnode_handle_put(ref.fwnode);
617 return ERR_PTR(-ENOMEM);
621 EXPORT_SYMBOL_GPL(sfp_bus_find_fwnode);
624 * sfp_bus_add_upstream() - parse and register the neighbouring device
625 * @bus: the &struct sfp_bus found via sfp_bus_find_fwnode()
626 * @upstream: the upstream private data
627 * @ops: the upstream's &struct sfp_upstream_ops
629 * Add upstream driver for the SFP bus, and if the bus is complete, register
630 * the SFP bus using sfp_register_upstream(). This takes a reference on the
631 * bus, so it is safe to put the bus after this call.
634 * - on success, a pointer to the sfp_bus structure,
635 * - %NULL if no SFP is specified,
636 * - on failure, an error pointer value:
638 * - corresponding to the errors detailed for
639 * fwnode_property_get_reference_args().
640 * - %-ENOMEM if we failed to allocate the bus.
641 * - an error from the upstream's connect_phy() method.
643 int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream,
644 const struct sfp_upstream_ops *ops)
648 /* If no bus, return success */
653 kref_get(&bus->kref);
654 bus->upstream_ops = ops;
655 bus->upstream = upstream;
658 ret = sfp_register_bus(bus);
660 sfp_upstream_clear(bus);
671 EXPORT_SYMBOL_GPL(sfp_bus_add_upstream);
674 * sfp_bus_del_upstream() - Delete a sfp bus
675 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
677 * Delete a previously registered upstream connection for the SFP
678 * module. @bus should have been added by sfp_bus_add_upstream().
680 void sfp_bus_del_upstream(struct sfp_bus *bus)
685 sfp_unregister_bus(bus);
686 sfp_upstream_clear(bus);
692 EXPORT_SYMBOL_GPL(sfp_bus_del_upstream);
694 /* Socket driver entry points */
695 int sfp_add_phy(struct sfp_bus *bus, struct phy_device *phydev)
697 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
700 if (ops && ops->connect_phy)
701 ret = ops->connect_phy(bus->upstream, phydev);
704 bus->phydev = phydev;
708 EXPORT_SYMBOL_GPL(sfp_add_phy);
710 void sfp_remove_phy(struct sfp_bus *bus)
712 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
714 if (ops && ops->disconnect_phy)
715 ops->disconnect_phy(bus->upstream);
718 EXPORT_SYMBOL_GPL(sfp_remove_phy);
720 void sfp_link_up(struct sfp_bus *bus)
722 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
724 if (ops && ops->link_up)
725 ops->link_up(bus->upstream);
727 EXPORT_SYMBOL_GPL(sfp_link_up);
729 void sfp_link_down(struct sfp_bus *bus)
731 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
733 if (ops && ops->link_down)
734 ops->link_down(bus->upstream);
736 EXPORT_SYMBOL_GPL(sfp_link_down);
738 int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
739 const struct sfp_quirk *quirk)
741 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
744 bus->sfp_quirk = quirk;
746 if (ops && ops->module_insert)
747 ret = ops->module_insert(bus->upstream, id);
751 EXPORT_SYMBOL_GPL(sfp_module_insert);
753 void sfp_module_remove(struct sfp_bus *bus)
755 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
757 if (ops && ops->module_remove)
758 ops->module_remove(bus->upstream);
760 bus->sfp_quirk = NULL;
762 EXPORT_SYMBOL_GPL(sfp_module_remove);
764 int sfp_module_start(struct sfp_bus *bus)
766 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
769 if (ops && ops->module_start)
770 ret = ops->module_start(bus->upstream);
774 EXPORT_SYMBOL_GPL(sfp_module_start);
776 void sfp_module_stop(struct sfp_bus *bus)
778 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
780 if (ops && ops->module_stop)
781 ops->module_stop(bus->upstream);
783 EXPORT_SYMBOL_GPL(sfp_module_stop);
785 static void sfp_socket_clear(struct sfp_bus *bus)
789 bus->socket_ops = NULL;
792 struct sfp_bus *sfp_register_socket(struct device *dev, struct sfp *sfp,
793 const struct sfp_socket_ops *ops)
795 struct sfp_bus *bus = sfp_bus_get(dev->fwnode);
802 bus->socket_ops = ops;
804 if (bus->upstream_ops) {
805 ret = sfp_register_bus(bus);
807 sfp_socket_clear(bus);
819 EXPORT_SYMBOL_GPL(sfp_register_socket);
821 void sfp_unregister_socket(struct sfp_bus *bus)
824 if (bus->upstream_ops)
825 sfp_unregister_bus(bus);
826 sfp_socket_clear(bus);
831 EXPORT_SYMBOL_GPL(sfp_unregister_socket);