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 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 /* Decode the bitrate information to MBd */
155 br_min = br_nom = br_max = 0;
156 if (id->base.br_nominal) {
157 if (id->base.br_nominal != 255) {
158 br_nom = id->base.br_nominal * 100;
159 br_min = br_nom - id->base.br_nominal * id->ext.br_min;
160 br_max = br_nom + id->base.br_nominal * id->ext.br_max;
161 } else if (id->ext.br_max) {
162 br_nom = 250 * id->ext.br_max;
163 br_max = br_nom + br_nom * id->ext.br_min / 100;
164 br_min = br_nom - br_nom * id->ext.br_min / 100;
167 /* When using passive cables, in case neither BR,min nor BR,max
168 * are specified, set br_min to 0 as the nominal value is then
169 * used as the maximum.
171 if (br_min == br_max && id->base.sfp_ct_passive)
175 /* Set ethtool support from the compliance fields. */
176 if (id->base.e10g_base_sr) {
177 phylink_set(modes, 10000baseSR_Full);
178 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
180 if (id->base.e10g_base_lr) {
181 phylink_set(modes, 10000baseLR_Full);
182 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
184 if (id->base.e10g_base_lrm) {
185 phylink_set(modes, 10000baseLRM_Full);
186 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
188 if (id->base.e10g_base_er) {
189 phylink_set(modes, 10000baseER_Full);
190 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
192 if (id->base.e1000_base_sx ||
193 id->base.e1000_base_lx ||
194 id->base.e1000_base_cx) {
195 phylink_set(modes, 1000baseX_Full);
196 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
198 if (id->base.e1000_base_t) {
199 phylink_set(modes, 1000baseT_Half);
200 phylink_set(modes, 1000baseT_Full);
201 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
202 __set_bit(PHY_INTERFACE_MODE_SGMII, interfaces);
205 /* 1000Base-PX or 1000Base-BX10 */
206 if ((id->base.e_base_px || id->base.e_base_bx10) &&
207 br_min <= 1300 && br_max >= 1200) {
208 phylink_set(modes, 1000baseX_Full);
209 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
212 /* 100Base-FX, 100Base-LX, 100Base-PX, 100Base-BX10 */
213 if (id->base.e100_base_fx || id->base.e100_base_lx) {
214 phylink_set(modes, 100baseFX_Full);
215 __set_bit(PHY_INTERFACE_MODE_100BASEX, interfaces);
217 if ((id->base.e_base_px || id->base.e_base_bx10) && br_nom == 100) {
218 phylink_set(modes, 100baseFX_Full);
219 __set_bit(PHY_INTERFACE_MODE_100BASEX, interfaces);
222 /* For active or passive cables, select the link modes
223 * based on the bit rates and the cable compliance bytes.
225 if ((id->base.sfp_ct_passive || id->base.sfp_ct_active) && br_nom) {
226 /* This may look odd, but some manufacturers use 12000MBd */
227 if (br_min <= 12000 && br_max >= 10300) {
228 phylink_set(modes, 10000baseCR_Full);
229 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
231 if (br_min <= 3200 && br_max >= 3100) {
232 phylink_set(modes, 2500baseX_Full);
233 __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
235 if (br_min <= 1300 && br_max >= 1200) {
236 phylink_set(modes, 1000baseX_Full);
237 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
240 if (id->base.sfp_ct_passive) {
241 if (id->base.passive.sff8431_app_e) {
242 phylink_set(modes, 10000baseCR_Full);
243 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
246 if (id->base.sfp_ct_active) {
247 if (id->base.active.sff8431_app_e ||
248 id->base.active.sff8431_lim) {
249 phylink_set(modes, 10000baseCR_Full);
250 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
254 switch (id->base.extended_cc) {
255 case SFF8024_ECC_UNSPEC:
257 case SFF8024_ECC_100GBASE_SR4_25GBASE_SR:
258 phylink_set(modes, 100000baseSR4_Full);
259 phylink_set(modes, 25000baseSR_Full);
261 case SFF8024_ECC_100GBASE_LR4_25GBASE_LR:
262 case SFF8024_ECC_100GBASE_ER4_25GBASE_ER:
263 phylink_set(modes, 100000baseLR4_ER4_Full);
265 case SFF8024_ECC_100GBASE_CR4:
266 phylink_set(modes, 100000baseCR4_Full);
268 case SFF8024_ECC_25GBASE_CR_S:
269 case SFF8024_ECC_25GBASE_CR_N:
270 phylink_set(modes, 25000baseCR_Full);
272 case SFF8024_ECC_10GBASE_T_SFI:
273 case SFF8024_ECC_10GBASE_T_SR:
274 phylink_set(modes, 10000baseT_Full);
275 __set_bit(PHY_INTERFACE_MODE_10GBASER, interfaces);
277 case SFF8024_ECC_5GBASE_T:
278 phylink_set(modes, 5000baseT_Full);
280 case SFF8024_ECC_2_5GBASE_T:
281 phylink_set(modes, 2500baseT_Full);
282 __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
285 dev_warn(bus->sfp_dev,
286 "Unknown/unsupported extended compliance code: 0x%02x\n",
287 id->base.extended_cc);
291 /* For fibre channel SFP, derive possible BaseX modes */
292 if (id->base.fc_speed_100 ||
293 id->base.fc_speed_200 ||
294 id->base.fc_speed_400) {
295 if (id->base.br_nominal >= 31) {
296 phylink_set(modes, 2500baseX_Full);
297 __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
299 if (id->base.br_nominal >= 12) {
300 phylink_set(modes, 1000baseX_Full);
301 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
305 /* If we haven't discovered any modes that this module supports, try
306 * the bitrate to determine supported modes. Some BiDi modules (eg,
307 * 1310nm/1550nm) are not 1000BASE-BX compliant due to the differing
308 * wavelengths, so do not set any transceiver bits.
310 * Do the same for modules supporting 2500BASE-X. Note that some
311 * modules use 2500Mbaud rather than 3100 or 3200Mbaud for
312 * 2500BASE-X, so we allow some slack here.
314 if (bitmap_empty(modes, __ETHTOOL_LINK_MODE_MASK_NBITS) && br_nom) {
315 if (br_min <= 1300 && br_max >= 1200) {
316 phylink_set(modes, 1000baseX_Full);
317 __set_bit(PHY_INTERFACE_MODE_1000BASEX, interfaces);
319 if (br_min <= 3200 && br_max >= 2500) {
320 phylink_set(modes, 2500baseX_Full);
321 __set_bit(PHY_INTERFACE_MODE_2500BASEX, interfaces);
325 if (bus->sfp_quirk && bus->sfp_quirk->modes)
326 bus->sfp_quirk->modes(id, modes, interfaces);
328 linkmode_or(support, support, modes);
330 phylink_set(support, Autoneg);
331 phylink_set(support, Pause);
332 phylink_set(support, Asym_Pause);
334 EXPORT_SYMBOL_GPL(sfp_parse_support);
337 * sfp_select_interface() - Select appropriate phy_interface_t mode
338 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
339 * @link_modes: ethtool link modes mask
341 * Derive the phy_interface_t mode for the SFP module from the link
344 phy_interface_t sfp_select_interface(struct sfp_bus *bus,
345 unsigned long *link_modes)
347 if (phylink_test(link_modes, 25000baseCR_Full) ||
348 phylink_test(link_modes, 25000baseKR_Full) ||
349 phylink_test(link_modes, 25000baseSR_Full))
350 return PHY_INTERFACE_MODE_25GBASER;
352 if (phylink_test(link_modes, 10000baseCR_Full) ||
353 phylink_test(link_modes, 10000baseSR_Full) ||
354 phylink_test(link_modes, 10000baseLR_Full) ||
355 phylink_test(link_modes, 10000baseLRM_Full) ||
356 phylink_test(link_modes, 10000baseER_Full) ||
357 phylink_test(link_modes, 10000baseT_Full))
358 return PHY_INTERFACE_MODE_10GBASER;
360 if (phylink_test(link_modes, 5000baseT_Full))
361 return PHY_INTERFACE_MODE_5GBASER;
363 if (phylink_test(link_modes, 2500baseX_Full))
364 return PHY_INTERFACE_MODE_2500BASEX;
366 if (phylink_test(link_modes, 1000baseT_Half) ||
367 phylink_test(link_modes, 1000baseT_Full))
368 return PHY_INTERFACE_MODE_SGMII;
370 if (phylink_test(link_modes, 1000baseX_Full))
371 return PHY_INTERFACE_MODE_1000BASEX;
373 if (phylink_test(link_modes, 100baseFX_Full))
374 return PHY_INTERFACE_MODE_100BASEX;
376 dev_warn(bus->sfp_dev, "Unable to ascertain link mode\n");
378 return PHY_INTERFACE_MODE_NA;
380 EXPORT_SYMBOL_GPL(sfp_select_interface);
382 static LIST_HEAD(sfp_buses);
383 static DEFINE_MUTEX(sfp_mutex);
385 static const struct sfp_upstream_ops *sfp_get_upstream_ops(struct sfp_bus *bus)
387 return bus->registered ? bus->upstream_ops : NULL;
390 static struct sfp_bus *sfp_bus_get(struct fwnode_handle *fwnode)
392 struct sfp_bus *sfp, *new, *found = NULL;
394 new = kzalloc(sizeof(*new), GFP_KERNEL);
396 mutex_lock(&sfp_mutex);
398 list_for_each_entry(sfp, &sfp_buses, node) {
399 if (sfp->fwnode == fwnode) {
400 kref_get(&sfp->kref);
407 kref_init(&new->kref);
408 new->fwnode = fwnode;
409 list_add(&new->node, &sfp_buses);
414 mutex_unlock(&sfp_mutex);
421 static void sfp_bus_release(struct kref *kref)
423 struct sfp_bus *bus = container_of(kref, struct sfp_bus, kref);
425 list_del(&bus->node);
426 mutex_unlock(&sfp_mutex);
431 * sfp_bus_put() - put a reference on the &struct sfp_bus
432 * @bus: the &struct sfp_bus found via sfp_bus_find_fwnode()
434 * Put a reference on the &struct sfp_bus and free the underlying structure
435 * if this was the last reference.
437 void sfp_bus_put(struct sfp_bus *bus)
440 kref_put_mutex(&bus->kref, sfp_bus_release, &sfp_mutex);
442 EXPORT_SYMBOL_GPL(sfp_bus_put);
444 static int sfp_register_bus(struct sfp_bus *bus)
446 const struct sfp_upstream_ops *ops = bus->upstream_ops;
451 ops->link_down(bus->upstream);
452 if (ops->connect_phy && bus->phydev) {
453 ret = ops->connect_phy(bus->upstream, bus->phydev);
458 bus->registered = true;
459 bus->socket_ops->attach(bus->sfp);
461 bus->socket_ops->start(bus->sfp);
462 bus->upstream_ops->attach(bus->upstream, bus);
466 static void sfp_unregister_bus(struct sfp_bus *bus)
468 const struct sfp_upstream_ops *ops = bus->upstream_ops;
470 if (bus->registered) {
471 bus->upstream_ops->detach(bus->upstream, bus);
473 bus->socket_ops->stop(bus->sfp);
474 bus->socket_ops->detach(bus->sfp);
475 if (bus->phydev && ops && ops->disconnect_phy)
476 ops->disconnect_phy(bus->upstream);
478 bus->registered = false;
482 * sfp_get_module_info() - Get the ethtool_modinfo for a SFP module
483 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
484 * @modinfo: a &struct ethtool_modinfo
486 * Fill in the type and eeprom_len parameters in @modinfo for a module on
487 * the sfp bus specified by @bus.
489 * Returns 0 on success or a negative errno number.
491 int sfp_get_module_info(struct sfp_bus *bus, struct ethtool_modinfo *modinfo)
493 return bus->socket_ops->module_info(bus->sfp, modinfo);
495 EXPORT_SYMBOL_GPL(sfp_get_module_info);
498 * sfp_get_module_eeprom() - Read the SFP module EEPROM
499 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
500 * @ee: a &struct ethtool_eeprom
501 * @data: buffer to contain the EEPROM data (must be at least @ee->len bytes)
503 * Read the EEPROM as specified by the supplied @ee. See the documentation
504 * for &struct ethtool_eeprom for the region to be read.
506 * Returns 0 on success or a negative errno number.
508 int sfp_get_module_eeprom(struct sfp_bus *bus, struct ethtool_eeprom *ee,
511 return bus->socket_ops->module_eeprom(bus->sfp, ee, data);
513 EXPORT_SYMBOL_GPL(sfp_get_module_eeprom);
516 * sfp_get_module_eeprom_by_page() - Read a page from the SFP module EEPROM
517 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
518 * @page: a &struct ethtool_module_eeprom
519 * @extack: extack for reporting problems
521 * Read an EEPROM page as specified by the supplied @page. See the
522 * documentation for &struct ethtool_module_eeprom for the page to be read.
524 * Returns 0 on success or a negative errno number. More error
525 * information might be provided via extack
527 int sfp_get_module_eeprom_by_page(struct sfp_bus *bus,
528 const struct ethtool_module_eeprom *page,
529 struct netlink_ext_ack *extack)
531 return bus->socket_ops->module_eeprom_by_page(bus->sfp, page, extack);
533 EXPORT_SYMBOL_GPL(sfp_get_module_eeprom_by_page);
536 * sfp_upstream_start() - Inform the SFP that the network device is up
537 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
539 * Inform the SFP socket that the network device is now up, so that the
540 * module can be enabled by allowing TX_DISABLE to be deasserted. This
541 * should be called from the network device driver's &struct net_device_ops
544 void sfp_upstream_start(struct sfp_bus *bus)
547 bus->socket_ops->start(bus->sfp);
550 EXPORT_SYMBOL_GPL(sfp_upstream_start);
553 * sfp_upstream_stop() - Inform the SFP that the network device is down
554 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
556 * Inform the SFP socket that the network device is now up, so that the
557 * module can be disabled by asserting TX_DISABLE, disabling the laser
558 * in optical modules. This should be called from the network device
559 * driver's &struct net_device_ops ndo_stop() method.
561 void sfp_upstream_stop(struct sfp_bus *bus)
564 bus->socket_ops->stop(bus->sfp);
565 bus->started = false;
567 EXPORT_SYMBOL_GPL(sfp_upstream_stop);
569 static void sfp_upstream_clear(struct sfp_bus *bus)
571 bus->upstream_ops = NULL;
572 bus->upstream = NULL;
576 * sfp_bus_find_fwnode() - parse and locate the SFP bus from fwnode
577 * @fwnode: firmware node for the parent device (MAC or PHY)
579 * Parse the parent device's firmware node for a SFP bus, and locate
580 * the sfp_bus structure, incrementing its reference count. This must
581 * be put via sfp_bus_put() when done.
584 * - on success, a pointer to the sfp_bus structure,
585 * - %NULL if no SFP is specified,
586 * - on failure, an error pointer value:
588 * - corresponding to the errors detailed for
589 * fwnode_property_get_reference_args().
590 * - %-ENOMEM if we failed to allocate the bus.
591 * - an error from the upstream's connect_phy() method.
593 struct sfp_bus *sfp_bus_find_fwnode(struct fwnode_handle *fwnode)
595 struct fwnode_reference_args ref;
599 ret = fwnode_property_get_reference_args(fwnode, "sfp", NULL,
606 if (!fwnode_device_is_available(ref.fwnode)) {
607 fwnode_handle_put(ref.fwnode);
611 bus = sfp_bus_get(ref.fwnode);
612 fwnode_handle_put(ref.fwnode);
614 return ERR_PTR(-ENOMEM);
618 EXPORT_SYMBOL_GPL(sfp_bus_find_fwnode);
621 * sfp_bus_add_upstream() - parse and register the neighbouring device
622 * @bus: the &struct sfp_bus found via sfp_bus_find_fwnode()
623 * @upstream: the upstream private data
624 * @ops: the upstream's &struct sfp_upstream_ops
626 * Add upstream driver for the SFP bus, and if the bus is complete, register
627 * the SFP bus using sfp_register_upstream(). This takes a reference on the
628 * bus, so it is safe to put the bus after this call.
631 * - on success, a pointer to the sfp_bus structure,
632 * - %NULL if no SFP is specified,
633 * - on failure, an error pointer value:
635 * - corresponding to the errors detailed for
636 * fwnode_property_get_reference_args().
637 * - %-ENOMEM if we failed to allocate the bus.
638 * - an error from the upstream's connect_phy() method.
640 int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream,
641 const struct sfp_upstream_ops *ops)
645 /* If no bus, return success */
650 kref_get(&bus->kref);
651 bus->upstream_ops = ops;
652 bus->upstream = upstream;
655 ret = sfp_register_bus(bus);
657 sfp_upstream_clear(bus);
668 EXPORT_SYMBOL_GPL(sfp_bus_add_upstream);
671 * sfp_bus_del_upstream() - Delete a sfp bus
672 * @bus: a pointer to the &struct sfp_bus structure for the sfp module
674 * Delete a previously registered upstream connection for the SFP
675 * module. @bus should have been added by sfp_bus_add_upstream().
677 void sfp_bus_del_upstream(struct sfp_bus *bus)
682 sfp_unregister_bus(bus);
683 sfp_upstream_clear(bus);
689 EXPORT_SYMBOL_GPL(sfp_bus_del_upstream);
691 /* Socket driver entry points */
692 int sfp_add_phy(struct sfp_bus *bus, struct phy_device *phydev)
694 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
697 if (ops && ops->connect_phy)
698 ret = ops->connect_phy(bus->upstream, phydev);
701 bus->phydev = phydev;
705 EXPORT_SYMBOL_GPL(sfp_add_phy);
707 void sfp_remove_phy(struct sfp_bus *bus)
709 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
711 if (ops && ops->disconnect_phy)
712 ops->disconnect_phy(bus->upstream);
715 EXPORT_SYMBOL_GPL(sfp_remove_phy);
717 void sfp_link_up(struct sfp_bus *bus)
719 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
721 if (ops && ops->link_up)
722 ops->link_up(bus->upstream);
724 EXPORT_SYMBOL_GPL(sfp_link_up);
726 void sfp_link_down(struct sfp_bus *bus)
728 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
730 if (ops && ops->link_down)
731 ops->link_down(bus->upstream);
733 EXPORT_SYMBOL_GPL(sfp_link_down);
735 int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
736 const struct sfp_quirk *quirk)
738 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
741 bus->sfp_quirk = quirk;
743 if (ops && ops->module_insert)
744 ret = ops->module_insert(bus->upstream, id);
748 EXPORT_SYMBOL_GPL(sfp_module_insert);
750 void sfp_module_remove(struct sfp_bus *bus)
752 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
754 if (ops && ops->module_remove)
755 ops->module_remove(bus->upstream);
757 bus->sfp_quirk = NULL;
759 EXPORT_SYMBOL_GPL(sfp_module_remove);
761 int sfp_module_start(struct sfp_bus *bus)
763 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
766 if (ops && ops->module_start)
767 ret = ops->module_start(bus->upstream);
771 EXPORT_SYMBOL_GPL(sfp_module_start);
773 void sfp_module_stop(struct sfp_bus *bus)
775 const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
777 if (ops && ops->module_stop)
778 ops->module_stop(bus->upstream);
780 EXPORT_SYMBOL_GPL(sfp_module_stop);
782 static void sfp_socket_clear(struct sfp_bus *bus)
786 bus->socket_ops = NULL;
789 struct sfp_bus *sfp_register_socket(struct device *dev, struct sfp *sfp,
790 const struct sfp_socket_ops *ops)
792 struct sfp_bus *bus = sfp_bus_get(dev->fwnode);
799 bus->socket_ops = ops;
801 if (bus->upstream_ops) {
802 ret = sfp_register_bus(bus);
804 sfp_socket_clear(bus);
816 EXPORT_SYMBOL_GPL(sfp_register_socket);
818 void sfp_unregister_socket(struct sfp_bus *bus)
821 if (bus->upstream_ops)
822 sfp_unregister_bus(bus);
823 sfp_socket_clear(bus);
828 EXPORT_SYMBOL_GPL(sfp_unregister_socket);