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 154 additions and 45 deletions

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4

drivers/net/ethernet/intel/ice/ice_common.c

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32

drivers/net/ethernet/intel/ice/ice_main.c

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47

drivers/net/ethernet/intel/ice/ice_ptp.c

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9

drivers/net/ethernet/intel/ice/ice_ptp.h

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106

drivers/net/ethernet/intel/ice/ice_ptp_hw.c

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7

drivers/net/ethernet/intel/ice/ice_ptp_hw.h

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2

drivers/net/ethernet/intel/ice/ice_type.h

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