diff options
| author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2024-04-27 12:03:27 +0100 |
|---|---|---|
| committer | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2024-05-07 10:49:41 +0100 |
| commit | 783030bd0fe42295ecc6fb396abb4e31c05f774b (patch) | |
| tree | 3bdeccc3d606830aae98f73a3881e53db160377b /include/linux | |
| parent | 1d0fba81b764198d8b267fd1d12f28b460708489 (diff) | |
net: phylink: add pcs_query_inband() method
Add a pcs_query_inband() method to query the PCS for its inband link
capabilities, and use this to determine whether link modes used with
optical SFPs can be supported.
When a PCS does not provide a method, we allow inband negotiation to
be either on or off, making this a no-op until the pcs_query_inband()
method is implemented by a PCS driver.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/phylink.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/phylink.h b/include/linux/phylink.h index e1fa495c6f70..924cfdcc73f2 100644 --- a/include/linux/phylink.h +++ b/include/linux/phylink.h @@ -445,6 +445,7 @@ struct phylink_pcs { /** * struct phylink_pcs_ops - MAC PCS operations structure. * @pcs_validate: validate the link configuration. + * @pcs_query_inband: query inband support for interface mode. * @pcs_enable: enable the PCS. * @pcs_disable: disable the PCS. * @pcs_pre_config: pre-mac_config method (for errata) @@ -458,6 +459,8 @@ struct phylink_pcs { struct phylink_pcs_ops { int (*pcs_validate)(struct phylink_pcs *pcs, unsigned long *supported, const struct phylink_link_state *state); + unsigned int (*pcs_query_inband)(struct phylink_pcs *pcs, + phy_interface_t interface); int (*pcs_enable)(struct phylink_pcs *pcs); void (*pcs_disable)(struct phylink_pcs *pcs); void (*pcs_pre_config)(struct phylink_pcs *pcs, @@ -494,6 +497,20 @@ int pcs_validate(struct phylink_pcs *pcs, unsigned long *supported, const struct phylink_link_state *state); /** + * pcs_query_inband - query inband support for interface mode. + * @pcs: a pointer to a &struct phylink_pcs. + * @interface: interface mode to be queried + * + * Returns zero if it is unknown what in-band signalling is supported by the + * PHY (e.g. because the PHY driver doesn't implement the method.) Otherwise, + * returns a bit mask of the LINK_INBAND_* values from + * &enum link_inband_signalling to describe which inband modes are supported + * for this interface mode. + */ +unsigned int pcs_query_inband(struct phylink_pcs *pcs, + phy_interface_t interface); + +/** * pcs_enable() - enable the PCS. * @pcs: a pointer to a &struct phylink_pcs. */ |