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ice: Add low latency Tx timestamp read

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E810 products can support low latency Tx timestamp register read.
This requires usage of threaded IRQ instead of kthread to reduce the
kthread start latency (spikes up to 20 ms).
Add a check for the device capability and use the new method if
supported.

Signed-off-by: Karol Kolacinski <karol.kolacinski@intel.com>
Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Link: https://lore.kernel.org/r/20220916201728.241510-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Karol Kolacinski
2022-09-16 13:17:28 -07:00
committed by Jakub Kicinski
parent 0572b18da9
commit 1229b33973
7 changed files with 158 additions and 49 deletions
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4
drivers/net/ethernet/intel/ice/ice_common.c
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@ -2519,6 +2519,8 @@ ice_parse_1588_dev_caps(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
info->tmr1_owned = ((number & ICE_TS_TMR1_OWND_M) != 0);
info->tmr1_ena = ((number & ICE_TS_TMR1_ENA_M) != 0);
info->ts_ll_read = ((number & ICE_TS_LL_TX_TS_READ_M) != 0);
info->ena_ports = logical_id;
info->tmr_own_map = phys_id;
@ -2536,6 +2538,8 @@ ice_parse_1588_dev_caps(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
info->tmr1_owned);
ice_debug(hw, ICE_DBG_INIT, "dev caps: tmr1_ena = %u\n",
info->tmr1_ena);
ice_debug(hw, ICE_DBG_INIT, "dev caps: ts_ll_read = %u\n",
info->ts_ll_read);
ice_debug(hw, ICE_DBG_INIT, "dev caps: ieee_1588 ena_ports = %u\n",
info->ena_ports);
ice_debug(hw, ICE_DBG_INIT, "dev caps: tmr_own_map = %u\n",