[PATCH AUTOSEL 6.0 53/77] net: sfp: move quirk handling into sfp.c

Sasha Levin
2022-10-09T22:19:52Z

From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>

[ Upstream commit 23571c7b96437483d28a990c906cc81f5f66374e ]

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>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 15aa5ac1ff49..82216c7bb470 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 a38705cf192f..2b06230be94f 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -253,6 +253,8 @@ 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;
@@ -309,6 +311,93 @@ 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)
@@ -1971,6 +2060,8 @@ 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;
}

@@ -2083,7 +2174,8 @@ 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);
--
2.35.1