[PATCH net-next 00/12] ionic: add PTP and hw clock support

From: Shannon Nelson <snelson@pensando.io>
To: netdev@vger.kernel.org, davem@davemloft.net, kuba@kernel.org
Cc: drivers@pensando.io, Shannon Nelson <snelson@pensando.io>
Subject: [PATCH net-next 00/12] ionic: add PTP and hw clock support
Date: Thu,  1 Apr 2021 10:55:58 -0700	[thread overview]
Message-ID: <20210401175610.44431-1-snelson@pensando.io> (raw)

This patchset adds support for accessing the DSC hardware clock and
for offloading PTP timestamping.

Tx packet timestamping happens through a separate Tx queue set up with
expanded completion descriptors that can report the timestamp.

Rx timestamping can happen either on all queues, or on a separate
timestamping queue when specific filtering is requested.  Again, the
timestamps are reported with the expanded completion descriptors.

The timestamping offload ability is advertised but not enabled until an
OS service asks for it.  At that time the driver's queues are reconfigured
to use the different completion descriptors and the private processing
queues as needed.

Reading the raw clock value comes through a new pair of values in the
device info registers in BAR0.  These high and low values are interpreted
with help from new clock mask, mult, and shift values in the device
identity information.

First we add the ability to detect new queue features, then the handling
of the new descriptor sizes.  After adding the new interface structures,
we start adding the support code, saving the advertising to the stack
for last.

Shannon Nelson (12):
  ionic: add new queue features to interface
  ionic: add handling of larger descriptors
  ionic: add hw timestamp structs to interface
  ionic: split adminq post and wait calls
  ionic: add hw timestamp support files
  ionic: link in the new hw timestamp code
  ionic: add rx filtering for hw timestamp steering
  ionic: set up hw timestamp queues
  ionic: add and enable tx and rx timestamp handling
  ionic: add ethtool support for PTP
  ionic: ethtool ptp stats
  ionic: advertise support for hardware timestamps

 drivers/net/ethernet/pensando/ionic/Makefile  |   1 +
 drivers/net/ethernet/pensando/ionic/ionic.h   |   6 +
 .../net/ethernet/pensando/ionic/ionic_dev.c   |   2 +
 .../net/ethernet/pensando/ionic/ionic_dev.h   |   3 +
 .../ethernet/pensando/ionic/ionic_ethtool.c   |  93 +++
 .../net/ethernet/pensando/ionic/ionic_if.h    | 214 ++++++-
 .../net/ethernet/pensando/ionic/ionic_lif.c   | 439 ++++++++++++-
 .../net/ethernet/pensando/ionic/ionic_lif.h   |  75 +++
 .../net/ethernet/pensando/ionic/ionic_main.c  |  17 +-
 .../net/ethernet/pensando/ionic/ionic_phc.c   | 589 ++++++++++++++++++
 .../ethernet/pensando/ionic/ionic_rx_filter.c |  21 +
 .../ethernet/pensando/ionic/ionic_rx_filter.h |   1 +
 .../net/ethernet/pensando/ionic/ionic_stats.c |  38 +-
 .../net/ethernet/pensando/ionic/ionic_txrx.c  | 138 +++-
 .../net/ethernet/pensando/ionic/ionic_txrx.h  |   3 +
 15 files changed, 1565 insertions(+), 75 deletions(-)
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_phc.c

-- 
2.17.1