From 74c551ca5a0edcc9cf66a3b73fd95b9a8615bfd0 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 11 Dec 2019 10:56:09 +0000 Subject: net: sfp: add module start/stop upstream notifications When dealing with some copper modules, we can't positively know the module capabilities are until we have probed the PHY. Without the full capabilities, we may end up failing a module that we could otherwise drive with a restricted set of capabilities. An example of this would be a module with a NBASE-T PHY plugged into a host that supports phy interface modes 2500BASE-X and SGMII. The PHY supports 10GBASE-R, 5000BASE-X, 2500BASE-X, SGMII interface modes, which means a subset of the capabilities are compatible with the host. However, reading the module EEPROM leads us to believe that the module only supports ethtool link mode 10GBASE-T, which is incompatible with the host - and thus results in the module being rejected. This patch adds an extra notification which are triggered after the SFP module's PHY probe, and a corresponding notification just before the PHY is removed. Reviewed-by: Andrew Lunn Signed-off-by: Russell King Signed-off-by: David S. Miller --- include/linux/sfp.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux/sfp.h') diff --git a/include/linux/sfp.h b/include/linux/sfp.h index 373d8b67ea86..66a56396e8e3 100644 --- a/include/linux/sfp.h +++ b/include/linux/sfp.h @@ -507,6 +507,8 @@ struct sfp_bus; * @module_insert: called after a module has been detected to determine * whether the module is supported for the upstream device. * @module_remove: called after the module has been removed. + * @module_start: called after the PHY probe step + * @module_stop: called before the PHY is removed * @link_down: called when the link is non-operational for whatever * reason. * @link_up: called when the link is operational. @@ -520,6 +522,8 @@ struct sfp_upstream_ops { void (*detach)(void *priv, struct sfp_bus *bus); int (*module_insert)(void *priv, const struct sfp_eeprom_id *id); void (*module_remove)(void *priv); + int (*module_start)(void *priv); + void (*module_stop)(void *priv); void (*link_down)(void *priv); void (*link_up)(void *priv); int (*connect_phy)(void *priv, struct phy_device *); -- cgit v1.2.3-59-g8ed1b