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Commit 9962acf7 authored by Russell King's avatar Russell King Committed by David S. Miller
Browse files

sfp: add support for 1000Base-PX and 1000Base-BX10 



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

Signed-off-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3fa7d19a

drivers/net/phy/sfp-bus.c

+21 −0
Original line number Diff line number Diff line
@@ -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;