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ce0aa27f RK |
1 | #include <linux/export.h> |
2 | #include <linux/kref.h> | |
3 | #include <linux/list.h> | |
4 | #include <linux/mutex.h> | |
5 | #include <linux/phylink.h> | |
6 | #include <linux/rtnetlink.h> | |
7 | #include <linux/slab.h> | |
8 | ||
9 | #include "sfp.h" | |
10 | ||
0a6fcd3f RK |
11 | /** |
12 | * struct sfp_bus - internal representation of a sfp bus | |
13 | */ | |
ce0aa27f | 14 | struct sfp_bus { |
0a6fcd3f | 15 | /* private: */ |
ce0aa27f RK |
16 | struct kref kref; |
17 | struct list_head node; | |
c19bb000 | 18 | struct fwnode_handle *fwnode; |
ce0aa27f RK |
19 | |
20 | const struct sfp_socket_ops *socket_ops; | |
21 | struct device *sfp_dev; | |
22 | struct sfp *sfp; | |
23 | ||
24 | const struct sfp_upstream_ops *upstream_ops; | |
25 | void *upstream; | |
26 | struct net_device *netdev; | |
27 | struct phy_device *phydev; | |
28 | ||
29 | bool registered; | |
30 | bool started; | |
31 | }; | |
32 | ||
0a6fcd3f RK |
33 | /** |
34 | * sfp_parse_port() - Parse the EEPROM base ID, setting the port type | |
35 | * @bus: a pointer to the &struct sfp_bus structure for the sfp module | |
36 | * @id: a pointer to the module's &struct sfp_eeprom_id | |
37 | * @support: optional pointer to an array of unsigned long for the | |
38 | * ethtool support mask | |
39 | * | |
40 | * Parse the EEPROM identification given in @id, and return one of | |
41 | * %PORT_TP, %PORT_FIBRE or %PORT_OTHER. If @support is non-%NULL, | |
42 | * also set the ethtool %ETHTOOL_LINK_MODE_xxx_BIT corresponding with | |
43 | * the connector type. | |
44 | * | |
45 | * If the port type is not known, returns %PORT_OTHER. | |
46 | */ | |
ce0aa27f RK |
47 | int sfp_parse_port(struct sfp_bus *bus, const struct sfp_eeprom_id *id, |
48 | unsigned long *support) | |
49 | { | |
50 | int port; | |
51 | ||
52 | /* port is the physical connector, set this from the connector field. */ | |
53 | switch (id->base.connector) { | |
54 | case SFP_CONNECTOR_SC: | |
55 | case SFP_CONNECTOR_FIBERJACK: | |
56 | case SFP_CONNECTOR_LC: | |
57 | case SFP_CONNECTOR_MT_RJ: | |
58 | case SFP_CONNECTOR_MU: | |
59 | case SFP_CONNECTOR_OPTICAL_PIGTAIL: | |
ce0aa27f RK |
60 | port = PORT_FIBRE; |
61 | break; | |
62 | ||
63 | case SFP_CONNECTOR_RJ45: | |
ce0aa27f RK |
64 | port = PORT_TP; |
65 | break; | |
66 | ||
f10fcbcf RK |
67 | case SFP_CONNECTOR_COPPER_PIGTAIL: |
68 | port = PORT_DA; | |
69 | break; | |
70 | ||
ce0aa27f RK |
71 | case SFP_CONNECTOR_UNSPEC: |
72 | if (id->base.e1000_base_t) { | |
ce0aa27f RK |
73 | port = PORT_TP; |
74 | break; | |
75 | } | |
76 | /* fallthrough */ | |
77 | case SFP_CONNECTOR_SG: /* guess */ | |
78 | case SFP_CONNECTOR_MPO_1X12: | |
79 | case SFP_CONNECTOR_MPO_2X16: | |
80 | case SFP_CONNECTOR_HSSDC_II: | |
ce0aa27f RK |
81 | case SFP_CONNECTOR_NOSEPARATE: |
82 | case SFP_CONNECTOR_MXC_2X16: | |
83 | port = PORT_OTHER; | |
84 | break; | |
85 | default: | |
86 | dev_warn(bus->sfp_dev, "SFP: unknown connector id 0x%02x\n", | |
87 | id->base.connector); | |
88 | port = PORT_OTHER; | |
89 | break; | |
90 | } | |
91 | ||
f10fcbcf RK |
92 | if (support) { |
93 | switch (port) { | |
94 | case PORT_FIBRE: | |
95 | phylink_set(support, FIBRE); | |
96 | break; | |
97 | ||
98 | case PORT_TP: | |
99 | phylink_set(support, TP); | |
100 | break; | |
101 | } | |
102 | } | |
103 | ||
ce0aa27f RK |
104 | return port; |
105 | } | |
106 | EXPORT_SYMBOL_GPL(sfp_parse_port); | |
107 | ||
0a6fcd3f RK |
108 | /** |
109 | * sfp_parse_support() - Parse the eeprom id for supported link modes | |
110 | * @bus: a pointer to the &struct sfp_bus structure for the sfp module | |
111 | * @id: a pointer to the module's &struct sfp_eeprom_id | |
112 | * @support: pointer to an array of unsigned long for the ethtool support mask | |
113 | * | |
114 | * Parse the EEPROM identification information and derive the supported | |
115 | * ethtool link modes for the module. | |
116 | */ | |
ce0aa27f RK |
117 | void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id, |
118 | unsigned long *support) | |
119 | { | |
9962acf7 | 120 | unsigned int br_min, br_nom, br_max; |
03145864 | 121 | __ETHTOOL_DECLARE_LINK_MODE_MASK(modes) = { 0, }; |
ce0aa27f | 122 | |
9962acf7 RK |
123 | /* Decode the bitrate information to MBd */ |
124 | br_min = br_nom = br_max = 0; | |
125 | if (id->base.br_nominal) { | |
126 | if (id->base.br_nominal != 255) { | |
127 | br_nom = id->base.br_nominal * 100; | |
52c5cd1b | 128 | br_min = br_nom - id->base.br_nominal * id->ext.br_min; |
9962acf7 RK |
129 | br_max = br_nom + id->base.br_nominal * id->ext.br_max; |
130 | } else if (id->ext.br_max) { | |
131 | br_nom = 250 * id->ext.br_max; | |
132 | br_max = br_nom + br_nom * id->ext.br_min / 100; | |
133 | br_min = br_nom - br_nom * id->ext.br_min / 100; | |
134 | } | |
2b999ba8 AT |
135 | |
136 | /* When using passive cables, in case neither BR,min nor BR,max | |
137 | * are specified, set br_min to 0 as the nominal value is then | |
138 | * used as the maximum. | |
139 | */ | |
140 | if (br_min == br_max && id->base.sfp_ct_passive) | |
141 | br_min = 0; | |
9962acf7 RK |
142 | } |
143 | ||
ce0aa27f RK |
144 | /* Set ethtool support from the compliance fields. */ |
145 | if (id->base.e10g_base_sr) | |
03145864 | 146 | phylink_set(modes, 10000baseSR_Full); |
ce0aa27f | 147 | if (id->base.e10g_base_lr) |
03145864 | 148 | phylink_set(modes, 10000baseLR_Full); |
ce0aa27f | 149 | if (id->base.e10g_base_lrm) |
03145864 | 150 | phylink_set(modes, 10000baseLRM_Full); |
ce0aa27f | 151 | if (id->base.e10g_base_er) |
03145864 | 152 | phylink_set(modes, 10000baseER_Full); |
ce0aa27f RK |
153 | if (id->base.e1000_base_sx || |
154 | id->base.e1000_base_lx || | |
155 | id->base.e1000_base_cx) | |
03145864 | 156 | phylink_set(modes, 1000baseX_Full); |
ce0aa27f | 157 | if (id->base.e1000_base_t) { |
03145864 RK |
158 | phylink_set(modes, 1000baseT_Half); |
159 | phylink_set(modes, 1000baseT_Full); | |
ce0aa27f RK |
160 | } |
161 | ||
9962acf7 RK |
162 | /* 1000Base-PX or 1000Base-BX10 */ |
163 | if ((id->base.e_base_px || id->base.e_base_bx10) && | |
164 | br_min <= 1300 && br_max >= 1200) | |
165 | phylink_set(support, 1000baseX_Full); | |
166 | ||
f10fcbcf RK |
167 | /* For active or passive cables, select the link modes |
168 | * based on the bit rates and the cable compliance bytes. | |
169 | */ | |
170 | if ((id->base.sfp_ct_passive || id->base.sfp_ct_active) && br_nom) { | |
171 | /* This may look odd, but some manufacturers use 12000MBd */ | |
172 | if (br_min <= 12000 && br_max >= 10300) | |
03145864 | 173 | phylink_set(modes, 10000baseCR_Full); |
f10fcbcf | 174 | if (br_min <= 3200 && br_max >= 3100) |
03145864 | 175 | phylink_set(modes, 2500baseX_Full); |
f10fcbcf | 176 | if (br_min <= 1300 && br_max >= 1200) |
03145864 | 177 | phylink_set(modes, 1000baseX_Full); |
f10fcbcf RK |
178 | } |
179 | if (id->base.sfp_ct_passive) { | |
180 | if (id->base.passive.sff8431_app_e) | |
03145864 | 181 | phylink_set(modes, 10000baseCR_Full); |
f10fcbcf RK |
182 | } |
183 | if (id->base.sfp_ct_active) { | |
184 | if (id->base.active.sff8431_app_e || | |
185 | id->base.active.sff8431_lim) { | |
03145864 | 186 | phylink_set(modes, 10000baseCR_Full); |
f10fcbcf RK |
187 | } |
188 | } | |
189 | ||
ce0aa27f RK |
190 | switch (id->base.extended_cc) { |
191 | case 0x00: /* Unspecified */ | |
192 | break; | |
193 | case 0x02: /* 100Gbase-SR4 or 25Gbase-SR */ | |
03145864 RK |
194 | phylink_set(modes, 100000baseSR4_Full); |
195 | phylink_set(modes, 25000baseSR_Full); | |
ce0aa27f RK |
196 | break; |
197 | case 0x03: /* 100Gbase-LR4 or 25Gbase-LR */ | |
198 | case 0x04: /* 100Gbase-ER4 or 25Gbase-ER */ | |
03145864 | 199 | phylink_set(modes, 100000baseLR4_ER4_Full); |
ce0aa27f RK |
200 | break; |
201 | case 0x0b: /* 100Gbase-CR4 or 25Gbase-CR CA-L */ | |
202 | case 0x0c: /* 25Gbase-CR CA-S */ | |
203 | case 0x0d: /* 25Gbase-CR CA-N */ | |
03145864 RK |
204 | phylink_set(modes, 100000baseCR4_Full); |
205 | phylink_set(modes, 25000baseCR_Full); | |
ce0aa27f RK |
206 | break; |
207 | default: | |
208 | dev_warn(bus->sfp_dev, | |
209 | "Unknown/unsupported extended compliance code: 0x%02x\n", | |
210 | id->base.extended_cc); | |
211 | break; | |
212 | } | |
213 | ||
214 | /* For fibre channel SFP, derive possible BaseX modes */ | |
215 | if (id->base.fc_speed_100 || | |
216 | id->base.fc_speed_200 || | |
217 | id->base.fc_speed_400) { | |
218 | if (id->base.br_nominal >= 31) | |
03145864 | 219 | phylink_set(modes, 2500baseX_Full); |
ce0aa27f | 220 | if (id->base.br_nominal >= 12) |
03145864 | 221 | phylink_set(modes, 1000baseX_Full); |
ce0aa27f | 222 | } |
03145864 RK |
223 | |
224 | /* If we haven't discovered any modes that this module supports, try | |
225 | * the encoding and bitrate to determine supported modes. Some BiDi | |
226 | * modules (eg, 1310nm/1550nm) are not 1000BASE-BX compliant due to | |
227 | * the differing wavelengths, so do not set any transceiver bits. | |
228 | */ | |
229 | if (bitmap_empty(modes, __ETHTOOL_LINK_MODE_MASK_NBITS)) { | |
230 | /* If the encoding and bit rate allows 1000baseX */ | |
231 | if (id->base.encoding == SFP_ENCODING_8B10B && br_nom && | |
232 | br_min <= 1300 && br_max >= 1200) | |
233 | phylink_set(modes, 1000baseX_Full); | |
234 | } | |
235 | ||
236 | bitmap_or(support, support, modes, __ETHTOOL_LINK_MODE_MASK_NBITS); | |
237 | ||
238 | phylink_set(support, Autoneg); | |
239 | phylink_set(support, Pause); | |
240 | phylink_set(support, Asym_Pause); | |
ce0aa27f RK |
241 | } |
242 | EXPORT_SYMBOL_GPL(sfp_parse_support); | |
243 | ||
a9c79364 RK |
244 | /** |
245 | * sfp_select_interface() - Select appropriate phy_interface_t mode | |
246 | * @bus: a pointer to the &struct sfp_bus structure for the sfp module | |
247 | * @id: a pointer to the module's &struct sfp_eeprom_id | |
248 | * @link_modes: ethtool link modes mask | |
249 | * | |
250 | * Derive the phy_interface_t mode for the information found in the | |
251 | * module's identifying EEPROM and the link modes mask. There is no | |
252 | * standard or defined way to derive this information, so we decide | |
253 | * based upon the link mode mask. | |
254 | */ | |
255 | phy_interface_t sfp_select_interface(struct sfp_bus *bus, | |
256 | const struct sfp_eeprom_id *id, | |
257 | unsigned long *link_modes) | |
258 | { | |
259 | if (phylink_test(link_modes, 10000baseCR_Full) || | |
260 | phylink_test(link_modes, 10000baseSR_Full) || | |
261 | phylink_test(link_modes, 10000baseLR_Full) || | |
262 | phylink_test(link_modes, 10000baseLRM_Full) || | |
263 | phylink_test(link_modes, 10000baseER_Full)) | |
264 | return PHY_INTERFACE_MODE_10GKR; | |
265 | ||
266 | if (phylink_test(link_modes, 2500baseX_Full)) | |
267 | return PHY_INTERFACE_MODE_2500BASEX; | |
268 | ||
269 | if (id->base.e1000_base_t || | |
270 | id->base.e100_base_lx || | |
271 | id->base.e100_base_fx) | |
272 | return PHY_INTERFACE_MODE_SGMII; | |
273 | ||
274 | if (phylink_test(link_modes, 1000baseX_Full)) | |
275 | return PHY_INTERFACE_MODE_1000BASEX; | |
276 | ||
277 | dev_warn(bus->sfp_dev, "Unable to ascertain link mode\n"); | |
278 | ||
279 | return PHY_INTERFACE_MODE_NA; | |
280 | } | |
281 | EXPORT_SYMBOL_GPL(sfp_select_interface); | |
282 | ||
ce0aa27f RK |
283 | static LIST_HEAD(sfp_buses); |
284 | static DEFINE_MUTEX(sfp_mutex); | |
285 | ||
286 | static const struct sfp_upstream_ops *sfp_get_upstream_ops(struct sfp_bus *bus) | |
287 | { | |
288 | return bus->registered ? bus->upstream_ops : NULL; | |
289 | } | |
290 | ||
c19bb000 | 291 | static struct sfp_bus *sfp_bus_get(struct fwnode_handle *fwnode) |
ce0aa27f RK |
292 | { |
293 | struct sfp_bus *sfp, *new, *found = NULL; | |
294 | ||
295 | new = kzalloc(sizeof(*new), GFP_KERNEL); | |
296 | ||
297 | mutex_lock(&sfp_mutex); | |
298 | ||
299 | list_for_each_entry(sfp, &sfp_buses, node) { | |
c19bb000 | 300 | if (sfp->fwnode == fwnode) { |
ce0aa27f RK |
301 | kref_get(&sfp->kref); |
302 | found = sfp; | |
303 | break; | |
304 | } | |
305 | } | |
306 | ||
307 | if (!found && new) { | |
308 | kref_init(&new->kref); | |
c19bb000 | 309 | new->fwnode = fwnode; |
ce0aa27f RK |
310 | list_add(&new->node, &sfp_buses); |
311 | found = new; | |
312 | new = NULL; | |
313 | } | |
314 | ||
315 | mutex_unlock(&sfp_mutex); | |
316 | ||
317 | kfree(new); | |
318 | ||
319 | return found; | |
320 | } | |
321 | ||
b6e67d6d | 322 | static void sfp_bus_release(struct kref *kref) |
ce0aa27f RK |
323 | { |
324 | struct sfp_bus *bus = container_of(kref, struct sfp_bus, kref); | |
325 | ||
326 | list_del(&bus->node); | |
327 | mutex_unlock(&sfp_mutex); | |
328 | kfree(bus); | |
329 | } | |
330 | ||
331 | static void sfp_bus_put(struct sfp_bus *bus) | |
332 | { | |
333 | kref_put_mutex(&bus->kref, sfp_bus_release, &sfp_mutex); | |
334 | } | |
335 | ||
336 | static int sfp_register_bus(struct sfp_bus *bus) | |
337 | { | |
338 | const struct sfp_upstream_ops *ops = bus->upstream_ops; | |
339 | int ret; | |
340 | ||
341 | if (ops) { | |
342 | if (ops->link_down) | |
343 | ops->link_down(bus->upstream); | |
344 | if (ops->connect_phy && bus->phydev) { | |
345 | ret = ops->connect_phy(bus->upstream, bus->phydev); | |
346 | if (ret) | |
347 | return ret; | |
348 | } | |
349 | } | |
350 | if (bus->started) | |
351 | bus->socket_ops->start(bus->sfp); | |
126d6848 | 352 | bus->netdev->sfp_bus = bus; |
ce0aa27f RK |
353 | bus->registered = true; |
354 | return 0; | |
355 | } | |
356 | ||
357 | static void sfp_unregister_bus(struct sfp_bus *bus) | |
358 | { | |
359 | const struct sfp_upstream_ops *ops = bus->upstream_ops; | |
360 | ||
126d6848 | 361 | bus->netdev->sfp_bus = NULL; |
ce0aa27f RK |
362 | if (bus->registered) { |
363 | if (bus->started) | |
364 | bus->socket_ops->stop(bus->sfp); | |
365 | if (bus->phydev && ops && ops->disconnect_phy) | |
366 | ops->disconnect_phy(bus->upstream); | |
367 | } | |
368 | bus->registered = false; | |
369 | } | |
370 | ||
0a6fcd3f RK |
371 | /** |
372 | * sfp_get_module_info() - Get the ethtool_modinfo for a SFP module | |
373 | * @bus: a pointer to the &struct sfp_bus structure for the sfp module | |
374 | * @modinfo: a &struct ethtool_modinfo | |
375 | * | |
376 | * Fill in the type and eeprom_len parameters in @modinfo for a module on | |
377 | * the sfp bus specified by @bus. | |
378 | * | |
379 | * Returns 0 on success or a negative errno number. | |
380 | */ | |
ce0aa27f RK |
381 | int sfp_get_module_info(struct sfp_bus *bus, struct ethtool_modinfo *modinfo) |
382 | { | |
ce0aa27f RK |
383 | return bus->socket_ops->module_info(bus->sfp, modinfo); |
384 | } | |
385 | EXPORT_SYMBOL_GPL(sfp_get_module_info); | |
386 | ||
0a6fcd3f RK |
387 | /** |
388 | * sfp_get_module_eeprom() - Read the SFP module EEPROM | |
389 | * @bus: a pointer to the &struct sfp_bus structure for the sfp module | |
390 | * @ee: a &struct ethtool_eeprom | |
391 | * @data: buffer to contain the EEPROM data (must be at least @ee->len bytes) | |
392 | * | |
393 | * Read the EEPROM as specified by the supplied @ee. See the documentation | |
394 | * for &struct ethtool_eeprom for the region to be read. | |
395 | * | |
396 | * Returns 0 on success or a negative errno number. | |
397 | */ | |
ce0aa27f | 398 | int sfp_get_module_eeprom(struct sfp_bus *bus, struct ethtool_eeprom *ee, |
516b29ed | 399 | u8 *data) |
ce0aa27f | 400 | { |
ce0aa27f RK |
401 | return bus->socket_ops->module_eeprom(bus->sfp, ee, data); |
402 | } | |
403 | EXPORT_SYMBOL_GPL(sfp_get_module_eeprom); | |
404 | ||
0a6fcd3f RK |
405 | /** |
406 | * sfp_upstream_start() - Inform the SFP that the network device is up | |
407 | * @bus: a pointer to the &struct sfp_bus structure for the sfp module | |
408 | * | |
409 | * Inform the SFP socket that the network device is now up, so that the | |
410 | * module can be enabled by allowing TX_DISABLE to be deasserted. This | |
411 | * should be called from the network device driver's &struct net_device_ops | |
412 | * ndo_open() method. | |
413 | */ | |
ce0aa27f RK |
414 | void sfp_upstream_start(struct sfp_bus *bus) |
415 | { | |
416 | if (bus->registered) | |
417 | bus->socket_ops->start(bus->sfp); | |
418 | bus->started = true; | |
419 | } | |
420 | EXPORT_SYMBOL_GPL(sfp_upstream_start); | |
421 | ||
0a6fcd3f RK |
422 | /** |
423 | * sfp_upstream_stop() - Inform the SFP that the network device is down | |
424 | * @bus: a pointer to the &struct sfp_bus structure for the sfp module | |
425 | * | |
426 | * Inform the SFP socket that the network device is now up, so that the | |
427 | * module can be disabled by asserting TX_DISABLE, disabling the laser | |
428 | * in optical modules. This should be called from the network device | |
429 | * driver's &struct net_device_ops ndo_stop() method. | |
430 | */ | |
ce0aa27f RK |
431 | void sfp_upstream_stop(struct sfp_bus *bus) |
432 | { | |
433 | if (bus->registered) | |
434 | bus->socket_ops->stop(bus->sfp); | |
435 | bus->started = false; | |
436 | } | |
437 | EXPORT_SYMBOL_GPL(sfp_upstream_stop); | |
438 | ||
f20a4c46 RK |
439 | static void sfp_upstream_clear(struct sfp_bus *bus) |
440 | { | |
441 | bus->upstream_ops = NULL; | |
442 | bus->upstream = NULL; | |
443 | bus->netdev = NULL; | |
444 | } | |
445 | ||
0a6fcd3f RK |
446 | /** |
447 | * sfp_register_upstream() - Register the neighbouring device | |
4bb7df7d | 448 | * @fwnode: firmware node for the SFP bus |
0a6fcd3f RK |
449 | * @ndev: network device associated with the interface |
450 | * @upstream: the upstream private data | |
451 | * @ops: the upstream's &struct sfp_upstream_ops | |
452 | * | |
453 | * Register the upstream device (eg, PHY) with the SFP bus. MAC drivers | |
454 | * should use phylink, which will call this function for them. Returns | |
455 | * a pointer to the allocated &struct sfp_bus. | |
456 | * | |
457 | * On error, returns %NULL. | |
458 | */ | |
c19bb000 | 459 | struct sfp_bus *sfp_register_upstream(struct fwnode_handle *fwnode, |
516b29ed FF |
460 | struct net_device *ndev, void *upstream, |
461 | const struct sfp_upstream_ops *ops) | |
ce0aa27f | 462 | { |
c19bb000 | 463 | struct sfp_bus *bus = sfp_bus_get(fwnode); |
ce0aa27f RK |
464 | int ret = 0; |
465 | ||
466 | if (bus) { | |
467 | rtnl_lock(); | |
468 | bus->upstream_ops = ops; | |
469 | bus->upstream = upstream; | |
470 | bus->netdev = ndev; | |
471 | ||
f20a4c46 | 472 | if (bus->sfp) { |
ce0aa27f | 473 | ret = sfp_register_bus(bus); |
f20a4c46 RK |
474 | if (ret) |
475 | sfp_upstream_clear(bus); | |
476 | } | |
ce0aa27f RK |
477 | rtnl_unlock(); |
478 | } | |
479 | ||
480 | if (ret) { | |
481 | sfp_bus_put(bus); | |
482 | bus = NULL; | |
483 | } | |
484 | ||
485 | return bus; | |
486 | } | |
487 | EXPORT_SYMBOL_GPL(sfp_register_upstream); | |
488 | ||
0a6fcd3f RK |
489 | /** |
490 | * sfp_unregister_upstream() - Unregister sfp bus | |
491 | * @bus: a pointer to the &struct sfp_bus structure for the sfp module | |
492 | * | |
493 | * Unregister a previously registered upstream connection for the SFP | |
494 | * module. @bus is returned from sfp_register_upstream(). | |
495 | */ | |
ce0aa27f RK |
496 | void sfp_unregister_upstream(struct sfp_bus *bus) |
497 | { | |
498 | rtnl_lock(); | |
0b2122e4 RK |
499 | if (bus->sfp) |
500 | sfp_unregister_bus(bus); | |
f20a4c46 | 501 | sfp_upstream_clear(bus); |
ce0aa27f RK |
502 | rtnl_unlock(); |
503 | ||
504 | sfp_bus_put(bus); | |
505 | } | |
506 | EXPORT_SYMBOL_GPL(sfp_unregister_upstream); | |
507 | ||
ce0aa27f RK |
508 | /* Socket driver entry points */ |
509 | int sfp_add_phy(struct sfp_bus *bus, struct phy_device *phydev) | |
510 | { | |
511 | const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus); | |
512 | int ret = 0; | |
513 | ||
514 | if (ops && ops->connect_phy) | |
515 | ret = ops->connect_phy(bus->upstream, phydev); | |
516 | ||
517 | if (ret == 0) | |
518 | bus->phydev = phydev; | |
519 | ||
520 | return ret; | |
521 | } | |
522 | EXPORT_SYMBOL_GPL(sfp_add_phy); | |
523 | ||
524 | void sfp_remove_phy(struct sfp_bus *bus) | |
525 | { | |
526 | const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus); | |
527 | ||
528 | if (ops && ops->disconnect_phy) | |
529 | ops->disconnect_phy(bus->upstream); | |
530 | bus->phydev = NULL; | |
531 | } | |
532 | EXPORT_SYMBOL_GPL(sfp_remove_phy); | |
533 | ||
ce0aa27f RK |
534 | void sfp_link_up(struct sfp_bus *bus) |
535 | { | |
536 | const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus); | |
537 | ||
538 | if (ops && ops->link_up) | |
539 | ops->link_up(bus->upstream); | |
540 | } | |
541 | EXPORT_SYMBOL_GPL(sfp_link_up); | |
542 | ||
543 | void sfp_link_down(struct sfp_bus *bus) | |
544 | { | |
545 | const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus); | |
546 | ||
547 | if (ops && ops->link_down) | |
548 | ops->link_down(bus->upstream); | |
549 | } | |
550 | EXPORT_SYMBOL_GPL(sfp_link_down); | |
551 | ||
552 | int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id) | |
553 | { | |
554 | const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus); | |
555 | int ret = 0; | |
556 | ||
557 | if (ops && ops->module_insert) | |
558 | ret = ops->module_insert(bus->upstream, id); | |
559 | ||
560 | return ret; | |
561 | } | |
562 | EXPORT_SYMBOL_GPL(sfp_module_insert); | |
563 | ||
564 | void sfp_module_remove(struct sfp_bus *bus) | |
565 | { | |
566 | const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus); | |
567 | ||
568 | if (ops && ops->module_remove) | |
569 | ops->module_remove(bus->upstream); | |
570 | } | |
571 | EXPORT_SYMBOL_GPL(sfp_module_remove); | |
572 | ||
f20a4c46 RK |
573 | static void sfp_socket_clear(struct sfp_bus *bus) |
574 | { | |
575 | bus->sfp_dev = NULL; | |
576 | bus->sfp = NULL; | |
577 | bus->socket_ops = NULL; | |
578 | } | |
579 | ||
ce0aa27f RK |
580 | struct sfp_bus *sfp_register_socket(struct device *dev, struct sfp *sfp, |
581 | const struct sfp_socket_ops *ops) | |
582 | { | |
c19bb000 | 583 | struct sfp_bus *bus = sfp_bus_get(dev->fwnode); |
ce0aa27f RK |
584 | int ret = 0; |
585 | ||
586 | if (bus) { | |
587 | rtnl_lock(); | |
588 | bus->sfp_dev = dev; | |
589 | bus->sfp = sfp; | |
590 | bus->socket_ops = ops; | |
591 | ||
f20a4c46 | 592 | if (bus->netdev) { |
ce0aa27f | 593 | ret = sfp_register_bus(bus); |
f20a4c46 RK |
594 | if (ret) |
595 | sfp_socket_clear(bus); | |
596 | } | |
ce0aa27f RK |
597 | rtnl_unlock(); |
598 | } | |
599 | ||
600 | if (ret) { | |
601 | sfp_bus_put(bus); | |
602 | bus = NULL; | |
603 | } | |
604 | ||
605 | return bus; | |
606 | } | |
607 | EXPORT_SYMBOL_GPL(sfp_register_socket); | |
608 | ||
609 | void sfp_unregister_socket(struct sfp_bus *bus) | |
610 | { | |
611 | rtnl_lock(); | |
0b2122e4 RK |
612 | if (bus->netdev) |
613 | sfp_unregister_bus(bus); | |
f20a4c46 | 614 | sfp_socket_clear(bus); |
ce0aa27f RK |
615 | rtnl_unlock(); |
616 | ||
617 | sfp_bus_put(bus); | |
618 | } | |
619 | EXPORT_SYMBOL_GPL(sfp_unregister_socket); |