From: Brelinski, TonyX <tonyx.brelinski@intel.com>
To: intel-wired-lan@osuosl.org
Subject: [Intel-wired-lan] [PATCH v2 6/8] ice: report the PTP clock index in ethtool .get_ts_info
Date: Thu, 10 Jun 2021 21:20:31 +0000 [thread overview]
Message-ID: <CO1PR11MB51050F7A582B08C6A5F84328FA359@CO1PR11MB5105.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20210609163953.52440-7-anthony.l.nguyen@intel.com>
> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of
> Tony Nguyen
> Sent: Wednesday, June 9, 2021 9:40 AM
> To: intel-wired-lan at lists.osuosl.org
> Subject: [Intel-wired-lan] [PATCH v2 6/8] ice: report the PTP clock index in
> ethtool .get_ts_info
>
> From: Jacob Keller <jacob.e.keller@intel.com>
>
> Now that the driver registers a PTP clock device that represents the clock
> hardware, it is important that the clock index is reported via the ethtool
> .get_ts_info callback.
>
> The underlying hardware resource is shared between multiple PF functions.
> Only one function owns the hardware resources associated with a timer, but
> multiple functions may be associated with it for the purposes of
> timestamping.
>
> To support this, the owning PF will store the clock index into the driver
> shared parameters buffer in firmware. Other PFs will look up the clock index
> by reading the driver shared parameter on demand when requested via the
> .get_ts_info ethtool function.
>
> In this way, all functions which are tied to the same timer are able to report
> the clock index. Userspace software such as ptp4l performs a look up on the
> netdev to determine the associated clock, and all commands to control or
> configure the clock will be handled through the controlling PF.
>
> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
> ---
> drivers/net/ethernet/intel/ice/ice_ethtool.c | 22 +++-
> drivers/net/ethernet/intel/ice/ice_ptp.c | 129 +++++++++++++++++++
> drivers/net/ethernet/intel/ice/ice_ptp.h | 5 +
> 3 files changed, 155 insertions(+), 1 deletion(-)
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com> (A Contingent Worker at Intel)
next prev parent reply other threads:[~2021-06-10 21:20 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-09 16:39 [Intel-wired-lan] [PATCH v2 0/8] ice: implement PTP clock for E810 devices Tony Nguyen
2021-06-09 16:39 ` [Intel-wired-lan] [PATCH v2 1/8] ice: add support for sideband messages Tony Nguyen
2021-06-10 20:03 ` Brelinski, TonyX
2021-06-09 16:39 ` [Intel-wired-lan] [PATCH v2 2/8] ice: process 1588 PTP capabilities during initialization Tony Nguyen
2021-06-10 20:04 ` Brelinski, TonyX
2021-06-09 16:39 ` [Intel-wired-lan] [PATCH v2 3/8] ice: add support for set/get of driver-stored firmware parameters Tony Nguyen
2021-06-10 21:16 ` Brelinski, TonyX
2021-06-09 16:39 ` [Intel-wired-lan] [PATCH v2 4/8] ice: add low level PTP clock access functions Tony Nguyen
2021-06-10 21:19 ` Brelinski, TonyX
2021-06-09 16:39 ` [Intel-wired-lan] [PATCH v2 5/8] ice: register 1588 PTP clock device object for E810 devices Tony Nguyen
2021-06-10 21:19 ` Brelinski, TonyX
2021-06-09 16:39 ` [Intel-wired-lan] [PATCH v2 6/8] ice: report the PTP clock index in ethtool .get_ts_info Tony Nguyen
2021-06-10 21:20 ` Brelinski, TonyX [this message]
2021-06-09 16:39 ` [Intel-wired-lan] [PATCH v2 7/8] ice: enable receive hardware timestamping Tony Nguyen
2021-06-10 21:21 ` Brelinski, TonyX
2021-06-09 16:39 ` [Intel-wired-lan] [PATCH v2 8/8] ice: enable transmit timestamps for E810 devices Tony Nguyen
2021-06-10 21:34 ` Brelinski, TonyX
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