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net: sfp: add support for module quirks

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Add support for applying module quirks to the list of supported
ethtool link modes.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2019-11-20 11:42:42 +00:00 committed by David S. Miller
parent 9bb59a21f5
commit b34bb2cb5b
1 changed files with 54 additions and 0 deletions
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54
drivers/net/phy/sfp-bus.c
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@ -10,6 +10,12 @@
#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
*/
@ -22,6 +28,7 @@ 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;
@ -31,6 +38,46 @@ 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 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
@ -234,6 +281,9 @@ 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);
@ -610,6 +660,8 @@ 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);
@ -623,6 +675,8 @@ 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);