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ice: add Tx reference clock index handling to AN restart command

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Extend the Restart Auto-Negotiation (AN) AdminQ command with a new
parameter allowing software to specify the Tx reference clock index to
be used during link restart.

This patch:
 - adds REFCLK field definitions to ice_aqc_restart_an
 - updates ice_aq_set_link_restart_an() to take a new refclk parameter
   and properly encode it into the command
 - keeps legacy behavior by passing REFCLK_NOCHANGE where appropriate

This prepares the driver for configurations requiring dynamic selection
of the Tx reference clock as part of the AN flow.

Reviewed-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Grzegorz Nitka <grzegorz.nitka@intel.com>
Link: https://patch.msgid.link/20260607183045.1213735-13-grzegorz.nitka@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Grzegorz Nitka 2026-06-07 20:30:44 +02:00 committed by Jakub Kicinski
parent fff4ed70ca
commit 4128bda8fc
4 changed files with 9 additions and 3 deletions
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2
drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
View File

@ -1169,6 +1169,8 @@ struct ice_aqc_restart_an {
u8 cmd_flags;
#define ICE_AQC_RESTART_AN_LINK_RESTART BIT(1)
#define ICE_AQC_RESTART_AN_LINK_ENABLE BIT(2)
#define ICE_AQC_RESTART_AN_REFCLK_M GENMASK(4, 3)
#define ICE_AQC_RESTART_AN_REFCLK_NOCHANGE 0
u8 reserved2[13];
};

5
drivers/net/ethernet/intel/ice/ice_common.c
View File

@ -4124,12 +4124,13 @@ int ice_get_link_status(struct ice_port_info *pi, bool *link_up)
* @pi: pointer to the port information structure
* @ena_link: if true: enable link, if false: disable link
* @cd: pointer to command details structure or NULL
* @refclk: the new TX reference clock, 0 if no change
*
* Sets up the link and restarts the Auto-Negotiation over the link.
*/
int
ice_aq_set_link_restart_an(struct ice_port_info *pi, bool ena_link,
struct ice_sq_cd *cd)
struct ice_sq_cd *cd, u8 refclk)
{
struct ice_aqc_restart_an *cmd;
struct libie_aq_desc desc;
@ -4145,6 +4146,8 @@ ice_aq_set_link_restart_an(struct ice_port_info *pi, bool ena_link,
else
cmd->cmd_flags &= ~ICE_AQC_RESTART_AN_LINK_ENABLE;
cmd->cmd_flags |= FIELD_PREP(ICE_AQC_RESTART_AN_REFCLK_M, refclk);
return ice_aq_send_cmd(pi->hw, &desc, NULL, 0, cd);
}

2
drivers/net/ethernet/intel/ice/ice_common.h
View File

@ -215,7 +215,7 @@ ice_cfg_phy_fec(struct ice_port_info *pi, struct ice_aqc_set_phy_cfg_data *cfg,
enum ice_fec_mode fec);
int
ice_aq_set_link_restart_an(struct ice_port_info *pi, bool ena_link,
struct ice_sq_cd *cd);
struct ice_sq_cd *cd, u8 refclk);
int
ice_aq_set_mac_cfg(struct ice_hw *hw, u16 max_frame_size, struct ice_sq_cd *cd);
int

3
drivers/net/ethernet/intel/ice/ice_lib.c
View File

@ -3769,7 +3769,8 @@ int ice_set_link(struct ice_vsi *vsi, bool ena)
if (vsi->type != ICE_VSI_PF)
return -EINVAL;
status = ice_aq_set_link_restart_an(pi, ena, NULL);
status = ice_aq_set_link_restart_an(pi, ena, NULL,
ICE_AQC_RESTART_AN_REFCLK_NOCHANGE);
/* if link is owned by manageability, FW will return LIBIE_AQ_RC_EMODE.
* this is not a fatal error, so print a warning message and return