ice: Enable SW interrupt from FW for LL TS

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Introduce new capability - Low Latency Timestamping with Interrupt.
On supported devices, driver can request a single timestamp from FW
without polling the register afterwards. Instead, FW can issue
a dedicated interrupt when the timestamp was read from the PHY register
and its value is available to read from the register.
This eliminates the need of bottom half scheduling, which results in
minimal delay for timestamping.

For this mode, allocate TS indices sequentially, so that timestamps are
always completed in FIFO manner.

Co-developed-by: Yochai Hagvi <yochai.hagvi@intel.com>
Signed-off-by: Yochai Hagvi <yochai.hagvi@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Karol Kolacinski <karol.kolacinski@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>

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This commit is contained in:

Karol Kolacinski 2023-11-29 13:40:23 +01:00 • committed by Tony Nguyen

parent 00d5000144

commit 82e71b226e

8 changed files with 274 additions and 28 deletions

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2

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

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

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

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

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

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

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

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

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