netdev - [PATCH v4 net-next 00/11] New DSA driver for VSC9953 Seville switch

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Date:   Mon, 13 Jul 2020 19:57:00 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, andrew@...n.ch, vivien.didelot@...il.com,
        f.fainelli@...il.com, antoine.tenart@...tlin.com,
        alexandre.belloni@...tlin.com, UNGLinuxDriver@...rochip.com,
        alexandru.marginean@....com, claudiu.manoil@....com,
        madalin.bucur@....nxp.com, radu-andrei.bulie@....com,
        fido_max@...ox.ru
Subject: [PATCH v4 net-next 00/11] New DSA driver for VSC9953 Seville switch

From: Vladimir Oltean <vladimir.oltean@....com>

Looking at the Felix and Ocelot drivers, Maxim asked if it would be
possible to use them as a base for a new driver for the Seville switch
inside NXP T1040. Turns out, it is! The result is that the mscc_felix
driver was extended to probe on Seville.

The biggest challenge seems to be getting register read/write API
generic enough to cover such wild bitfield variations between hardware
generations.

Currently, both felix and seville are built under the same kernel config
option (NET_DSA_MSCC_FELIX). This has both some advantages (no need to
duplicate the Lynx PCS code from felix_vsc9959.c) and some disadvantages
(Seville needs to depend on PCI and on ENETC_MDIO). This will be further
refined as time progresses.

The driver has been completely reviewed. Previous submission was here,
it wasn't accepted due to a conflict with Mark Brown's tree, very late
in the release cycle:

https://patchwork.ozlabs.org/project/netdev/cover/20200531122640.1375715-1-olteanv@gmail.com/

So this is more of a repost, with the only changes being related to
rebasing on top of the cleanup I had to do in Ocelot.

Maxim Kochetkov (4):
  soc: mscc: ocelot: add MII registers description
  net: mscc: ocelot: convert SYS_PAUSE_CFG register access to regfield
  net: mscc: ocelot: extend watermark encoding function
  net: dsa: felix: introduce support for Seville VSC9953 switch

Vladimir Oltean (7):
  net: mscc: ocelot: convert port registers to regmap
  net: mscc: ocelot: convert QSYS_SWITCH_PORT_MODE and SYS_PORT_MODE to
    regfields
  net: dsa: felix: create a template for the DSA tags on xmit
  net: mscc: ocelot: split writes to pause frame enable bit and to
    thresholds
  net: mscc: ocelot: disable flow control on NPI interface
  net: dsa: felix: move probing to felix_vsc9959.c
  docs: devicetree: add bindings for Seville DSA switch inside Felix
    driver

 .../devicetree/bindings/net/dsa/ocelot.txt    |  105 +-
 drivers/net/dsa/ocelot/Kconfig                |   12 +-
 drivers/net/dsa/ocelot/Makefile               |    3 +-
 drivers/net/dsa/ocelot/felix.c                |  232 +---
 drivers/net/dsa/ocelot/felix.h                |   28 +-
 drivers/net/dsa/ocelot/felix_vsc9959.c        |  303 ++++-
 drivers/net/dsa/ocelot/seville_vsc9953.c      | 1104 +++++++++++++++++
 drivers/net/ethernet/mscc/ocelot.c            |   73 +-
 drivers/net/ethernet/mscc/ocelot.h            |    9 +-
 drivers/net/ethernet/mscc/ocelot_io.c         |   18 +-
 drivers/net/ethernet/mscc/ocelot_net.c        |    5 +-
 drivers/net/ethernet/mscc/ocelot_vsc7514.c    |   82 +-
 include/soc/mscc/ocelot.h                     |   68 +-
 include/soc/mscc/ocelot_dev.h                 |   78 --
 include/soc/mscc/ocelot_qsys.h                |   13 -
 include/soc/mscc/ocelot_sys.h                 |   23 -
 net/dsa/tag_ocelot.c                          |   21 +-
 17 files changed, 1767 insertions(+), 410 deletions(-)
 create mode 100644 drivers/net/dsa/ocelot/seville_vsc9953.c

-- 
2.25.1