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| author | Anil Samal <anil.samal@intel.com> | 2024-07-09 13:29:49 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-07-10 19:09:45 -0700 |
| commit | 70838938e89c759586eb4f3b5ce29ca252c8240d (patch) | |
| tree | a44e161338aa0f9b62c924d15816ca2307e2ec1f /drivers/net/ethernet/intel/ice/ice_common.c | |
| parent | ac21add2540e1a6ed27abea47fd2234ab05c71eb (diff) | |
| download | linux-70838938e89c759586eb4f3b5ce29ca252c8240d.tar.gz linux-70838938e89c759586eb4f3b5ce29ca252c8240d.tar.bz2 linux-70838938e89c759586eb4f3b5ce29ca252c8240d.zip | |
ice: Implement driver functionality to dump serdes equalizer values
To debug link issues in the field, serdes Tx/Rx equalizer values
help to determine the health of serdes lane.
Extend 'ethtool -d' option to dump serdes Tx/Rx equalizer.
The following list of equalizer param is supported
a. rx_equalization_pre2
b. rx_equalization_pre1
c. rx_equalization_post1
d. rx_equalization_bflf
e. rx_equalization_bfhf
f. rx_equalization_drate
g. tx_equalization_pre1
h. tx_equalization_pre3
i. tx_equalization_atten
j. tx_equalization_post1
k. tx_equalization_pre2
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Anil Samal <anil.samal@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://patch.msgid.link/20240709202951.2103115-4-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_common.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_common.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c index a4f175cf5c61..e311a41a74fa 100644 --- a/drivers/net/ethernet/intel/ice/ice_common.c +++ b/drivers/net/ethernet/intel/ice/ice_common.c @@ -3371,6 +3371,43 @@ int ice_update_link_info(struct ice_port_info *pi) return status; } +/** + * ice_aq_get_phy_equalization - function to read serdes equaliser + * value from firmware using admin queue command. + * @hw: pointer to the HW struct + * @data_in: represents the serdes equalization parameter requested + * @op_code: represents the serdes number and flag to represent tx or rx + * @serdes_num: represents the serdes number + * @output: pointer to the caller-supplied buffer to return serdes equaliser + * + * Return: non-zero status on error and 0 on success. + */ +int ice_aq_get_phy_equalization(struct ice_hw *hw, u16 data_in, u16 op_code, + u8 serdes_num, int *output) +{ + struct ice_aqc_dnl_call_command *cmd; + struct ice_aqc_dnl_call buf = {}; + struct ice_aq_desc desc; + int err; + + buf.sto.txrx_equa_reqs.data_in = cpu_to_le16(data_in); + buf.sto.txrx_equa_reqs.op_code_serdes_sel = + cpu_to_le16(op_code | (serdes_num & 0xF)); + cmd = &desc.params.dnl_call; + ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_dnl_call); + desc.flags |= cpu_to_le16(ICE_AQ_FLAG_BUF | + ICE_AQ_FLAG_RD | + ICE_AQ_FLAG_SI); + desc.datalen = cpu_to_le16(sizeof(struct ice_aqc_dnl_call)); + cmd->activity_id = cpu_to_le16(ICE_AQC_ACT_ID_DNL); + + err = ice_aq_send_cmd(hw, &desc, &buf, sizeof(struct ice_aqc_dnl_call), + NULL); + *output = err ? 0 : buf.sto.txrx_equa_resp.val; + + return err; +} + #define FEC_REG_PORT(port) { \ FEC_CORR_LOW_REG_PORT##port, \ FEC_CORR_HIGH_REG_PORT##port, \ |