redonkable/alistair23-linux
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sfp: add support for 1000Base-PX and 1000Base-BX10

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Add support for decoding the transceiver information for 1000Base-PX and
1000Base-BX10.  These use 1000BASE-X protocol.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2017-12-29 12:15:23 +00:00 committed by David S. Miller
parent 3fa7d19abe
commit 9962acf7fb
1 changed files with 21 additions and 0 deletions
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21
drivers/net/phy/sfp-bus.c
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@ -165,10 +165,26 @@ EXPORT_SYMBOL_GPL(sfp_parse_interface);
void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
unsigned long *support)
{
unsigned int br_min, br_nom, br_max;
phylink_set(support, Autoneg);
phylink_set(support, Pause);
phylink_set(support, Asym_Pause);
/* Decode the bitrate information to MBd */
br_min = br_nom = br_max = 0;
if (id->base.br_nominal) {
if (id->base.br_nominal != 255) {
br_nom = id->base.br_nominal * 100;
br_min = br_nom + id->base.br_nominal * id->ext.br_min;
br_max = br_nom + id->base.br_nominal * id->ext.br_max;
} else if (id->ext.br_max) {
br_nom = 250 * id->ext.br_max;
br_max = br_nom + br_nom * id->ext.br_min / 100;
br_min = br_nom - br_nom * id->ext.br_min / 100;
}
}
/* Set ethtool support from the compliance fields. */
if (id->base.e10g_base_sr)
phylink_set(support, 10000baseSR_Full);
@ -187,6 +203,11 @@ void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
phylink_set(support, 1000baseT_Full);
}
/* 1000Base-PX or 1000Base-BX10 */
if ((id->base.e_base_px || id->base.e_base_bx10) &&
br_min <= 1300 && br_max >= 1200)
phylink_set(support, 1000baseX_Full);
switch (id->base.extended_cc) {
case 0x00: /* Unspecified */
break;