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authorRussell King <rmk+kernel@armlinux.org.uk>2019-03-08 14:02:25 +0000
committerRussell King <rmk+kernel@armlinux.org.uk>2019-07-09 11:44:26 +0100
commitb8c7060d1b26cd2f5e1c579852bb575f4eda32fc (patch)
treed3605154760365113490a0fdc38038e439b1b1ef
parentacb17643eb18dc05c72f0a46a532c149879cb9e3 (diff)
net: sfp: add support for module quirks
Add support for applying module quirks to the list of supported ethtool link modes. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
-rw-r--r--drivers/net/phy/sfp-bus.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
index b23fc41896ef..11cb98fa66f4 100644
--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -9,6 +9,12 @@
#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
*/
@@ -21,6 +27,7 @@ struct sfp_bus {
const struct sfp_socket_ops *socket_ops;
struct device *sfp_dev;
struct sfp *sfp;
+ const struct sfp_quirk *sfp_quirk;
const struct sfp_upstream_ops *upstream_ops;
void *upstream;
@@ -30,6 +37,39 @@ struct sfp_bus {
bool started;
};
+static const struct sfp_quirk sfp_quirks[] = {
+};
+
+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 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 ((!q->vendor ||
+ !strncmp(q->vendor, id->base.vendor_name, vs)) &&
+ (!q->part ||
+ !strncmp(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
@@ -233,6 +273,9 @@ void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
phylink_set(modes, 1000baseX_Full);
}
+ if (bus->sfp_quirk)
+ bus->sfp_quirk->modes(id, modes);
+
bitmap_or(support, support, modes, __ETHTOOL_LINK_MODE_MASK_NBITS);
phylink_set(support, Autoneg);
@@ -553,6 +596,8 @@ int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id)
const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
int ret = 0;
+ bus->sfp_quirk = sfp_lookup_quirk(id);
+
if (ops && ops->module_insert)
ret = ops->module_insert(bus->upstream, id);
@@ -566,6 +611,8 @@ void sfp_module_remove(struct sfp_bus *bus)
if (ops && ops->module_remove)
ops->module_remove(bus->upstream);
+
+ bus->sfp_quirk = NULL;
}
EXPORT_SYMBOL_GPL(sfp_module_remove);