path: root/pkgs/patches-linux-5.15/110-net-sfp-move-quirk-handling-into-sfp.c.patch

From cb3a4e33a0415f84736734e77fb2d6c1a5fab1d7 Mon Sep 17 00:00:00 2001
From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Date: Fri, 26 Aug 2022 08:43:30 +0100
Subject: [PATCH 1/4] net: sfp: move quirk handling into sfp.c

We need to handle more quirks than just those which affect the link
modes of the module. Move the quirk lookup into sfp.c, and pass the
quirk to sfp-bus.c

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/phy/sfp-bus.c | 98 ++-------------------------------------
 drivers/net/phy/sfp.c     | 94 ++++++++++++++++++++++++++++++++++++-
 drivers/net/phy/sfp.h     |  9 +++-
 3 files changed, 104 insertions(+), 97 deletions(-)

diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
index 4369d6249e7b..267182d32bd5 100644
--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -10,12 +10,6 @@
 
 #include "sfp.h"
 
-struct sfp_quirk {
-	const char *vendor;
-	const char *part;
-	void (*modes)(const struct sfp_eeprom_id *id, unsigned long *modes);
-};
-
 /**
  * struct sfp_bus - internal representation of a sfp bus
  */
@@ -38,93 +32,6 @@ struct sfp_bus {
 	bool started;
 };
 
-static void sfp_quirk_2500basex(const struct sfp_eeprom_id *id,
-				unsigned long *modes)
-{
-	phylink_set(modes, 2500baseX_Full);
-}
-
-static void sfp_quirk_ubnt_uf_instant(const struct sfp_eeprom_id *id,
-				      unsigned long *modes)
-{
-	/* Ubiquiti U-Fiber Instant module claims that support all transceiver
-	 * types including 10G Ethernet which is not truth. So clear all claimed
-	 * modes and set only one mode which module supports: 1000baseX_Full.
-	 */
-	phylink_zero(modes);
-	phylink_set(modes, 1000baseX_Full);
-}
-
-static const struct sfp_quirk sfp_quirks[] = {
-	{
-		// Alcatel Lucent G-010S-P can operate at 2500base-X, but
-		// incorrectly report 2500MBd NRZ in their EEPROM
-		.vendor = "ALCATELLUCENT",
-		.part = "G010SP",
-		.modes = sfp_quirk_2500basex,
-	}, {
-		// Alcatel Lucent G-010S-A can operate at 2500base-X, but
-		// report 3.2GBd NRZ in their EEPROM
-		.vendor = "ALCATELLUCENT",
-		.part = "3FE46541AA",
-		.modes = sfp_quirk_2500basex,
-	}, {
-		// Huawei MA5671A can operate at 2500base-X, but report 1.2GBd
-		// NRZ in their EEPROM
-		.vendor = "HUAWEI",
-		.part = "MA5671A",
-		.modes = sfp_quirk_2500basex,
-	}, {
-		// Lantech 8330-262D-E can operate at 2500base-X, but
-		// incorrectly report 2500MBd NRZ in their EEPROM
-		.vendor = "Lantech",
-		.part = "8330-262D-E",
-		.modes = sfp_quirk_2500basex,
-	}, {
-		.vendor = "UBNT",
-		.part = "UF-INSTANT",
-		.modes = sfp_quirk_ubnt_uf_instant,
-	},
-};
-
-static size_t sfp_strlen(const char *str, size_t maxlen)
-{
-	size_t size, i;
-
-	/* Trailing characters should be filled with space chars */
-	for (i = 0, size = 0; i < maxlen; i++)
-		if (str[i] != ' ')
-			size = i + 1;
-
-	return size;
-}
-
-static bool sfp_match(const char *qs, const char *str, size_t len)
-{
-	if (!qs)
-		return true;
-	if (strlen(qs) != len)
-		return false;
-	return !strncmp(qs, str, len);
-}
-
-static const struct sfp_quirk *sfp_lookup_quirk(const struct sfp_eeprom_id *id)
-{
-	const struct sfp_quirk *q;
-	unsigned int i;
-	size_t vs, ps;
-
-	vs = sfp_strlen(id->base.vendor_name, ARRAY_SIZE(id->base.vendor_name));
-	ps = sfp_strlen(id->base.vendor_pn, ARRAY_SIZE(id->base.vendor_pn));
-
-	for (i = 0, q = sfp_quirks; i < ARRAY_SIZE(sfp_quirks); i++, q++)
-		if (sfp_match(q->vendor, id->base.vendor_name, vs) &&
-		    sfp_match(q->part, id->base.vendor_pn, ps))
-			return q;
-
-	return NULL;
-}
-
 /**
  * sfp_parse_port() - Parse the EEPROM base ID, setting the port type
  * @bus: a pointer to the &struct sfp_bus structure for the sfp module
@@ -786,12 +693,13 @@ void sfp_link_down(struct sfp_bus *bus)
 }
 EXPORT_SYMBOL_GPL(sfp_link_down);
 
-int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id)
+int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
+		      const struct sfp_quirk *quirk)
 {
 	const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
 	int ret = 0;
 
-	bus->sfp_quirk = sfp_lookup_quirk(id);
+	bus->sfp_quirk = quirk;
 
 	if (ops && ops->module_insert)
 		ret = ops->module_insert(bus->upstream, id);
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 028a5df5c538..7be9eb47c40f 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -252,6 +252,8 @@ struct sfp {
 	unsigned int module_t_start_up;
 	bool tx_fault_ignore;
 
+	const struct sfp_quirk *quirk;
+
 #if IS_ENABLED(CONFIG_HWMON)
 	struct sfp_diag diag;
 	struct delayed_work hwmon_probe;
@@ -308,6 +310,93 @@ static const struct of_device_id sfp_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, sfp_of_match);
 
+static void sfp_quirk_2500basex(const struct sfp_eeprom_id *id,
+				unsigned long *modes)
+{
+	linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseX_Full_BIT, modes);
+}
+
+static void sfp_quirk_ubnt_uf_instant(const struct sfp_eeprom_id *id,
+				      unsigned long *modes)
+{
+	/* Ubiquiti U-Fiber Instant module claims that support all transceiver
+	 * types including 10G Ethernet which is not truth. So clear all claimed
+	 * modes and set only one mode which module supports: 1000baseX_Full.
+	 */
+	linkmode_zero(modes);
+	linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, modes);
+}
+
+static const struct sfp_quirk sfp_quirks[] = {
+	{
+		// Alcatel Lucent G-010S-P can operate at 2500base-X, but
+		// incorrectly report 2500MBd NRZ in their EEPROM
+		.vendor = "ALCATELLUCENT",
+		.part = "G010SP",
+		.modes = sfp_quirk_2500basex,
+	}, {
+		// Alcatel Lucent G-010S-A can operate at 2500base-X, but
+		// report 3.2GBd NRZ in their EEPROM
+		.vendor = "ALCATELLUCENT",
+		.part = "3FE46541AA",
+		.modes = sfp_quirk_2500basex,
+	}, {
+		// Huawei MA5671A can operate at 2500base-X, but report 1.2GBd
+		// NRZ in their EEPROM
+		.vendor = "HUAWEI",
+		.part = "MA5671A",
+		.modes = sfp_quirk_2500basex,
+	}, {
+		// Lantech 8330-262D-E can operate at 2500base-X, but
+		// incorrectly report 2500MBd NRZ in their EEPROM
+		.vendor = "Lantech",
+		.part = "8330-262D-E",
+		.modes = sfp_quirk_2500basex,
+	}, {
+		.vendor = "UBNT",
+		.part = "UF-INSTANT",
+		.modes = sfp_quirk_ubnt_uf_instant,
+	},
+};
+
+static size_t sfp_strlen(const char *str, size_t maxlen)
+{
+	size_t size, i;
+
+	/* Trailing characters should be filled with space chars */
+	for (i = 0, size = 0; i < maxlen; i++)
+		if (str[i] != ' ')
+			size = i + 1;
+
+	return size;
+}
+
+static bool sfp_match(const char *qs, const char *str, size_t len)
+{
+	if (!qs)
+		return true;
+	if (strlen(qs) != len)
+		return false;
+	return !strncmp(qs, str, len);
+}
+
+static const struct sfp_quirk *sfp_lookup_quirk(const struct sfp_eeprom_id *id)
+{
+	const struct sfp_quirk *q;
+	unsigned int i;
+	size_t vs, ps;
+
+	vs = sfp_strlen(id->base.vendor_name, ARRAY_SIZE(id->base.vendor_name));
+	ps = sfp_strlen(id->base.vendor_pn, ARRAY_SIZE(id->base.vendor_pn));
+
+	for (i = 0, q = sfp_quirks; i < ARRAY_SIZE(sfp_quirks); i++, q++)
+		if (sfp_match(q->vendor, id->base.vendor_name, vs) &&
+		    sfp_match(q->part, id->base.vendor_pn, ps))
+			return q;
+
+	return NULL;
+}
+
 static unsigned long poll_jiffies;
 
 static unsigned int sfp_gpio_get_state(struct sfp *sfp)
@@ -1952,6 +2041,8 @@ static int sfp_sm_mod_probe(struct sfp *sfp, bool report)
 	else
 		sfp->tx_fault_ignore = false;
 
+	sfp->quirk = sfp_lookup_quirk(&id);
+
 	return 0;
 }
 
@@ -2063,7 +2154,8 @@ static void sfp_sm_module(struct sfp *sfp, unsigned int event)
 			break;
 
 		/* Report the module insertion to the upstream device */
-		err = sfp_module_insert(sfp->sfp_bus, &sfp->id);
+		err = sfp_module_insert(sfp->sfp_bus, &sfp->id,
+					sfp->quirk);
 		if (err < 0) {
 			sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0);
 			break;
diff --git a/drivers/net/phy/sfp.h b/drivers/net/phy/sfp.h
index 27226535c72b..03f1d47fe6ca 100644
--- a/drivers/net/phy/sfp.h
+++ b/drivers/net/phy/sfp.h
@@ -6,6 +6,12 @@
 
 struct sfp;
 
+struct sfp_quirk {
+	const char *vendor;
+	const char *part;
+	void (*modes)(const struct sfp_eeprom_id *id, unsigned long *modes);
+};
+
 struct sfp_socket_ops {
 	void (*attach)(struct sfp *sfp);
 	void (*detach)(struct sfp *sfp);
@@ -23,7 +29,8 @@ int sfp_add_phy(struct sfp_bus *bus, struct phy_device *phydev);
 void sfp_remove_phy(struct sfp_bus *bus);
 void sfp_link_up(struct sfp_bus *bus);
 void sfp_link_down(struct sfp_bus *bus);
-int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id);
+int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
+		      const struct sfp_quirk *quirk);
 void sfp_module_remove(struct sfp_bus *bus);
 int sfp_module_start(struct sfp_bus *bus);
 void sfp_module_stop(struct sfp_bus *bus);
-- 
2.34.1