[PATCH net-next v8 0/8] Hirschmann Hellcreek DSA driver

Kurt Kanzenbach
2020-11-03T07:11:35Z

Hi,

this series adds a DSA driver for the Hirschmann Hellcreek TSN switch
IP. Characteristics of that IP:

* Full duplex Ethernet interface at 100/1000 Mbps on three ports
* IEEE 802.1Q-compliant Ethernet Switch
* IEEE 802.1Qbv Time-Aware scheduling support
* IEEE 1588 and IEEE 802.1AS support

That IP is used e.g. in

https://www.arrow.com/en/campaigns/arrow-kairos

Due to the hardware setup the switch driver is implemented using DSA. A special
tagging protocol is leveraged. Furthermore, this driver supports PTP and
hardware timestamping.

This work is part of the AccessTSN project: https://www.accesstsn.com/

The previous versions can be found here:

* https://lkml.kernel.org/netdev/20200618064029.32168-1-kurt@linutronix.de/
* https://lkml.kernel.org/netdev/20200710113611.3398-1-kurt@linutronix.de/
* https://lkml.kernel.org/netdev/20200723081714.16005-1-kurt@linutronix.de/
* https://lkml.kernel.org/netdev/20200820081118.10105-1-kurt@linutronix.de/
* https://lkml.kernel.org/netdev/20200901125014.17801-1-kurt@linutronix.de/
* https://lkml.kernel.org/netdev/20200904062739.3540-1-kurt@linutronix.de/
* https://lkml.kernel.org/netdev/20201004112911.25085-1-kurt@linutronix.de/
* https://lkml.kernel.org/netdev/20201028074221.29326-1-kurt@linutronix.de/

Changes since v7:

* Simplify tagging code (rebase to net-next)
* Pass info instead of ptr (Florian Fainelli)
* Fix yamllint warnings (Rob Herring)

Changes since v6:

* Add .tail_tag = true (Vladimir Oltean)
* Fix vlan_filtering=0 bridges (Vladimir Oltean)
* Enforce restrictions (Vladimir Oltean)
* Sort stuff alphabetically (Vladimir Oltean)
* Rename hellcreek.yaml to hirschmann,hellcreek.yaml
* Typo fixes

Changes since v5:

* Implement configure_vlan_while_not_filtering behavior (Vladimir Oltean)
* Minor cleanups

Changes since v4:

* Fix W=1 compiler warnings (kernel test robot)
* Add tags

Changes since v3:

* Drop TAPRIO support (David Miller)
=> Switch to mutexes due to the lack of hrtimers
* Use more specific compatible strings and add platform data (Andrew Lunn)
* Fix Kconfig ordering (Andrew Lunn)

Changes since v2:

* Make it compile by getting all requirements merged first (Jakub Kicinski, David Miller)
* Use "tsn" for TSN register set (Rob Herring)
* Fix DT binding issues (Rob Herring)

Changes since v1:

* Code simplifications (Florian Fainelli, Vladimir Oltean)
* Fix issues with hellcreek.yaml bindings (Florian Fainelli)
* Clear reserved field in ptp v2 event messages (Richard Cochran)
* Make use of generic ptp parsing function (Richard Cochran, Vladimir Oltean)
* Fix Kconfig (Florian Fainelli)
* Add tags (Florian Fainelli, Rob Herring, Richard Cochran)

Changes since RFC ordered by reviewers:

* Andrew Lunn
* Use dev_dbg for debug messages
* Get rid of __ function names where possible
* Use reverse xmas tree variable ordering
* Remove redundant/useless checks
* Improve comments e.g. for PTP
* Fix Kconfig ordering
* Make LED handling more generic and provide info via DT
* Setup advertisement of PHYs according to hardware
* Drop debugfs patch
* Jakub Kicinski
* Fix compiler warnings
* Florian Fainelli
* Switch to YAML DT bindings
* Richard Cochran
* Fix typo
* Add missing NULL checks

Kamil Alkhouri (2):
net: dsa: hellcreek: Add PTP clock support
net: dsa: hellcreek: Add support for hardware timestamping

Kurt Kanzenbach (5):
net: dsa: Add tag handling for Hirschmann Hellcreek switches
net: dsa: Add DSA driver for Hirschmann Hellcreek switches
net: dsa: hellcreek: Add PTP status LEDs
dt-bindings: Add vendor prefix for Hirschmann
dt-bindings: net: dsa: Add documentation for Hellcreek switches

Vladimir Oltean (1):
net: dsa: Give drivers the chance to veto certain upper devices

.../net/dsa/hirschmann,hellcreek.yaml | 127 ++
.../devicetree/bindings/vendor-prefixes.yaml | 2 +
drivers/net/dsa/Kconfig | 2 +
drivers/net/dsa/Makefile | 1 +
drivers/net/dsa/hirschmann/Kconfig | 9 +
drivers/net/dsa/hirschmann/Makefile | 5 +
drivers/net/dsa/hirschmann/hellcreek.c | 1339 +++++++++++++++++
drivers/net/dsa/hirschmann/hellcreek.h | 286 ++++
.../net/dsa/hirschmann/hellcreek_hwtstamp.c | 479 ++++++
.../net/dsa/hirschmann/hellcreek_hwtstamp.h | 58 +
drivers/net/dsa/hirschmann/hellcreek_ptp.c | 452 ++++++
drivers/net/dsa/hirschmann/hellcreek_ptp.h | 76 +
.../platform_data/hirschmann-hellcreek.h | 23 +
include/net/dsa.h | 8 +
net/dsa/Kconfig | 6 +
net/dsa/Makefile | 1 +
net/dsa/slave.c | 12 +
net/dsa/tag_hellcreek.c | 66 +
18 files changed, 2952 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/dsa/hirschmann,hellcreek.yaml
create mode 100644 drivers/net/dsa/hirschmann/Kconfig
create mode 100644 drivers/net/dsa/hirschmann/Makefile
create mode 100644 drivers/net/dsa/hirschmann/hellcreek.c
create mode 100644 drivers/net/dsa/hirschmann/hellcreek.h
create mode 100644 drivers/net/dsa/hirschmann/hellcreek_hwtstamp.c
create mode 100644 drivers/net/dsa/hirschmann/hellcreek_hwtstamp.h
create mode 100644 drivers/net/dsa/hirschmann/hellcreek_ptp.c
create mode 100644 drivers/net/dsa/hirschmann/hellcreek_ptp.h
create mode 100644 include/linux/platform_data/hirschmann-hellcreek.h
create mode 100644 net/dsa/tag_hellcreek.c

--
2.20.1