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2023-12-08 01573e231f18eb2d99162747186f59511f56b64d 
 kernel/include/linux/sfp.h
....@@ -224,7 +224,7 @@
224224  *
225225  * See the SFF-8472 specification and related documents for the definition
226226  * of these structure members. This can be obtained from
227
- * ftp://ftp.seagate.com/sff
227
+ * https://www.snia.org/technology-communities/sff/specifications
228228  */
229229 struct sfp_eeprom_id {
230230 	struct sfp_eeprom_base base;
....@@ -275,6 +275,61 @@
275275 	__be16 cal_v_offset;
276276 } __packed;
277277 
278
+/* SFF8024 defined constants */
279
+enum {
280
+	SFF8024_ID_UNK			= 0x00,
281
+	SFF8024_ID_SFF_8472		= 0x02,
282
+	SFF8024_ID_SFP			= 0x03,
283
+	SFF8024_ID_DWDM_SFP		= 0x0b,
284
+	SFF8024_ID_QSFP_8438		= 0x0c,
285
+	SFF8024_ID_QSFP_8436_8636	= 0x0d,
286
+	SFF8024_ID_QSFP28_8636		= 0x11,
287
+
288
+	SFF8024_ENCODING_UNSPEC		= 0x00,
289
+	SFF8024_ENCODING_8B10B		= 0x01,
290
+	SFF8024_ENCODING_4B5B		= 0x02,
291
+	SFF8024_ENCODING_NRZ		= 0x03,
292
+	SFF8024_ENCODING_8472_MANCHESTER= 0x04,
293
+	SFF8024_ENCODING_8472_SONET	= 0x05,
294
+	SFF8024_ENCODING_8472_64B66B	= 0x06,
295
+	SFF8024_ENCODING_8436_MANCHESTER= 0x06,
296
+	SFF8024_ENCODING_8436_SONET	= 0x04,
297
+	SFF8024_ENCODING_8436_64B66B	= 0x05,
298
+	SFF8024_ENCODING_256B257B	= 0x07,
299
+	SFF8024_ENCODING_PAM4		= 0x08,
300
+
301
+	SFF8024_CONNECTOR_UNSPEC	= 0x00,
302
+	/* codes 01-05 not supportable on SFP, but some modules have single SC */
303
+	SFF8024_CONNECTOR_SC		= 0x01,
304
+	SFF8024_CONNECTOR_FIBERJACK	= 0x06,
305
+	SFF8024_CONNECTOR_LC		= 0x07,
306
+	SFF8024_CONNECTOR_MT_RJ		= 0x08,
307
+	SFF8024_CONNECTOR_MU		= 0x09,
308
+	SFF8024_CONNECTOR_SG		= 0x0a,
309
+	SFF8024_CONNECTOR_OPTICAL_PIGTAIL= 0x0b,
310
+	SFF8024_CONNECTOR_MPO_1X12	= 0x0c,
311
+	SFF8024_CONNECTOR_MPO_2X16	= 0x0d,
312
+	SFF8024_CONNECTOR_HSSDC_II	= 0x20,
313
+	SFF8024_CONNECTOR_COPPER_PIGTAIL= 0x21,
314
+	SFF8024_CONNECTOR_RJ45		= 0x22,
315
+	SFF8024_CONNECTOR_NOSEPARATE	= 0x23,
316
+	SFF8024_CONNECTOR_MXC_2X16	= 0x24,
317
+
318
+	SFF8024_ECC_UNSPEC		= 0x00,
319
+	SFF8024_ECC_100G_25GAUI_C2M_AOC	= 0x01,
320
+	SFF8024_ECC_100GBASE_SR4_25GBASE_SR = 0x02,
321
+	SFF8024_ECC_100GBASE_LR4_25GBASE_LR = 0x03,
322
+	SFF8024_ECC_100GBASE_ER4_25GBASE_ER = 0x04,
323
+	SFF8024_ECC_100GBASE_SR10	= 0x05,
324
+	SFF8024_ECC_100GBASE_CR4	= 0x0b,
325
+	SFF8024_ECC_25GBASE_CR_S	= 0x0c,
326
+	SFF8024_ECC_25GBASE_CR_N	= 0x0d,
327
+	SFF8024_ECC_10GBASE_T_SFI	= 0x16,
328
+	SFF8024_ECC_10GBASE_T_SR	= 0x1c,
329
+	SFF8024_ECC_5GBASE_T		= 0x1d,
330
+	SFF8024_ECC_2_5GBASE_T		= 0x1e,
331
+};
332
+
278333 /* SFP EEPROM registers */
279334 enum {
280335 	SFP_PHYS_ID			= 0x00,
....@@ -309,34 +364,7 @@
309364 	SFP_SFF8472_COMPLIANCE		= 0x5e,
310365 	SFP_CC_EXT			= 0x5f,
311366 
312
-	SFP_PHYS_ID_SFF			= 0x02,
313
-	SFP_PHYS_ID_SFP			= 0x03,
314367 	SFP_PHYS_EXT_ID_SFP		= 0x04,
315
-	SFP_CONNECTOR_UNSPEC		= 0x00,
316
-	/* codes 01-05 not supportable on SFP, but some modules have single SC */
317
-	SFP_CONNECTOR_SC		= 0x01,
318
-	SFP_CONNECTOR_FIBERJACK		= 0x06,
319
-	SFP_CONNECTOR_LC		= 0x07,
320
-	SFP_CONNECTOR_MT_RJ		= 0x08,
321
-	SFP_CONNECTOR_MU		= 0x09,
322
-	SFP_CONNECTOR_SG		= 0x0a,
323
-	SFP_CONNECTOR_OPTICAL_PIGTAIL	= 0x0b,
324
-	SFP_CONNECTOR_MPO_1X12		= 0x0c,
325
-	SFP_CONNECTOR_MPO_2X16		= 0x0d,
326
-	SFP_CONNECTOR_HSSDC_II		= 0x20,
327
-	SFP_CONNECTOR_COPPER_PIGTAIL	= 0x21,
328
-	SFP_CONNECTOR_RJ45		= 0x22,
329
-	SFP_CONNECTOR_NOSEPARATE	= 0x23,
330
-	SFP_CONNECTOR_MXC_2X16		= 0x24,
331
-	SFP_ENCODING_UNSPEC		= 0x00,
332
-	SFP_ENCODING_8B10B		= 0x01,
333
-	SFP_ENCODING_4B5B		= 0x02,
334
-	SFP_ENCODING_NRZ		= 0x03,
335
-	SFP_ENCODING_8472_MANCHESTER	= 0x04,
336
-	SFP_ENCODING_8472_SONET		= 0x05,
337
-	SFP_ENCODING_8472_64B66B	= 0x06,
338
-	SFP_ENCODING_256B257B		= 0x07,
339
-	SFP_ENCODING_PAM4		= 0x08,
340368 	SFP_OPTIONS_HIGH_POWER_LEVEL	= BIT(13),
341369 	SFP_OPTIONS_PAGING_A2		= BIT(12),
342370 	SFP_OPTIONS_RETIMER		= BIT(11),
....@@ -428,6 +456,10 @@
428456 	SFP_TEC_CUR			= 0x6c,
429457 
430458 	SFP_STATUS			= 0x6e,
459
+	SFP_STATUS_TX_DISABLE		= BIT(7),
460
+	SFP_STATUS_TX_DISABLE_FORCE	= BIT(6),
461
+	SFP_STATUS_TX_FAULT		= BIT(2),
462
+	SFP_STATUS_RX_LOS		= BIT(1),
431463 	SFP_ALARM0			= 0x70,
432464 	SFP_ALARM0_TEMP_HIGH		= BIT(7),
433465 	SFP_ALARM0_TEMP_LOW		= BIT(6),
....@@ -464,14 +496,19 @@
464496 struct fwnode_handle;
465497 struct ethtool_eeprom;
466498 struct ethtool_modinfo;
467
-struct net_device;
468499 struct sfp_bus;
469500 
470501 /**
471502  * struct sfp_upstream_ops - upstream operations structure
503
+ * @attach: called when the sfp socket driver is bound to the upstream
504
+ *   (mandatory).
505
+ * @detach: called when the sfp socket driver is unbound from the upstream
506
+ *   (mandatory).
472507  * @module_insert: called after a module has been detected to determine
473508  *   whether the module is supported for the upstream device.
474509  * @module_remove: called after the module has been removed.
510
+ * @module_start: called after the PHY probe step
511
+ * @module_stop: called before the PHY is removed
475512  * @link_down: called when the link is non-operational for whatever
476513  *   reason.
477514  * @link_up: called when the link is operational.
....@@ -481,8 +518,12 @@
481518  *   been removed.
482519  */
483520 struct sfp_upstream_ops {
521
+	void (*attach)(void *priv, struct sfp_bus *bus);
522
+	void (*detach)(void *priv, struct sfp_bus *bus);
484523 	int (*module_insert)(void *priv, const struct sfp_eeprom_id *id);
485524 	void (*module_remove)(void *priv);
525
+	int (*module_start)(void *priv);
526
+	void (*module_stop)(void *priv);
486527 	void (*link_down)(void *priv);
487528 	void (*link_up)(void *priv);
488529 	int (*connect_phy)(void *priv, struct phy_device *);
....@@ -492,10 +533,10 @@
492533 #if IS_ENABLED(CONFIG_SFP)
493534 int sfp_parse_port(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
494535 		   unsigned long *support);
536
+bool sfp_may_have_phy(struct sfp_bus *bus, const struct sfp_eeprom_id *id);
495537 void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
496538 		       unsigned long *support);
497539 phy_interface_t sfp_select_interface(struct sfp_bus *bus,
498
-				     const struct sfp_eeprom_id *id,
499540 				     unsigned long *link_modes);
500541 
501542 int sfp_get_module_info(struct sfp_bus *bus, struct ethtool_modinfo *modinfo);
....@@ -503,16 +544,23 @@
503544 			  u8 *data);
504545 void sfp_upstream_start(struct sfp_bus *bus);
505546 void sfp_upstream_stop(struct sfp_bus *bus);
506
-struct sfp_bus *sfp_register_upstream(struct fwnode_handle *fwnode,
507
-				      struct net_device *ndev, void *upstream,
508
-				      const struct sfp_upstream_ops *ops);
509
-void sfp_unregister_upstream(struct sfp_bus *bus);
547
+void sfp_bus_put(struct sfp_bus *bus);
548
+struct sfp_bus *sfp_bus_find_fwnode(struct fwnode_handle *fwnode);
549
+int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream,
550
+			 const struct sfp_upstream_ops *ops);
551
+void sfp_bus_del_upstream(struct sfp_bus *bus);
510552 #else
511553 static inline int sfp_parse_port(struct sfp_bus *bus,
512554 				 const struct sfp_eeprom_id *id,
513555 				 unsigned long *support)
514556 {
515557 	return PORT_OTHER;
558
+}
559
+
560
+static inline bool sfp_may_have_phy(struct sfp_bus *bus,
561
+				    const struct sfp_eeprom_id *id)
562
+{
563
+	return false;
516564 }
517565 
518566 static inline void sfp_parse_support(struct sfp_bus *bus,
....@@ -522,7 +570,6 @@
522570 }
523571 
524572 static inline phy_interface_t sfp_select_interface(struct sfp_bus *bus,
525
-						   const struct sfp_eeprom_id *id,
526573 						   unsigned long *link_modes)
527574 {
528575 	return PHY_INTERFACE_MODE_NA;
....@@ -548,15 +595,22 @@
548595 {
549596 }
550597 
551
-static inline struct sfp_bus *sfp_register_upstream(
552
-	struct fwnode_handle *fwnode,
553
-	struct net_device *ndev, void *upstream,
554
-	const struct sfp_upstream_ops *ops)
598
+static inline void sfp_bus_put(struct sfp_bus *bus)
555599 {
556
-	return (struct sfp_bus *)-1;
557600 }
558601 
559
-static inline void sfp_unregister_upstream(struct sfp_bus *bus)
602
+static inline struct sfp_bus *sfp_bus_find_fwnode(struct fwnode_handle *fwnode)
603
+{
604
+	return NULL;
605
+}
606
+
607
+static inline int sfp_bus_add_upstream(struct sfp_bus *bus, void *upstream,
608
+				       const struct sfp_upstream_ops *ops)
609
+{
610
+	return 0;
611
+}
612
+
613
+static inline void sfp_bus_del_upstream(struct sfp_bus *bus)
560614 {
561615 }
562616 #endif