[v2,net-next,00/19] Add ionic driver

This is the second version of a patch series that adds the ionic driver,
supporting the Pensando ethernet device.

In this initial patchset we implement basic transmit and receive.  Later
patchsets will add more advanced features.

Our thanks to Andrew Lunn, Michal Kubecek, Jacub Kicinski, and the ever
present kbuild test robots for their comments and suggestions.

There was some commentary on patch size and count, and I'm trying to
be careful - this v2 adds a patch with 2 new files for devlink, but has
fewer total lines.  I'm pushing the boundaries on how many in a patchset,
but I tried to keep most of them bite-sized and self consistent.  I'm not
sure further slicing-and-dicing will make much difference, but I'll try
if it is still an issue.

New in v2:
 - removed debugfs error checking and cut down on debugfs use
 - remove redundant bounds checking on incoming values for mtu and ethtool
 - don't alloc rx_filter memory until the match type has been checked
 - free the ionic struct on remove
 - simplified link_up and netif_carrier_ok comparison
 - put stats into ethtool -S, out of debugfs
 - moved dev_cmd and dev_info dumping to ethtool -d, out of debugfs
 - added devlink support
 - used kernel's rss init routines rather than open code
 - set the Kbuild dependant on 64BIT
 - cut down on some unnecessary log messaging
 - cleaned up ionic_get_link_ksettings
 - cleaned up other little code bits here and there

Shannon Nelson (19):
  ionic: Add basic framework for IONIC Network device driver
  ionic: Add hardware init and device commands
  ionic: Add port management commands
  ionic: Add basic lif support
  ionic: Add interrupts and doorbells
  ionic: Add basic adminq support
  ionic: Add adminq action
  ionic: Add notifyq support
  ionic: Add the basic NDO callbacks for netdev support
  ionic: Add management of rx filters
  ionic: Add Rx filter and rx_mode ndo support
  ionic: Add async link status check and basic stats
  ionic: Add initial ethtool support
  ionic: Add Tx and Rx handling
  ionic: Add netdev-event handling
  ionic: Add driver stats
  ionic: Add RSS support
  ionic: Add coalesce and other features
  ionic: Add basic devlink interface

 .../networking/device_drivers/index.rst       |    1 +
 .../device_drivers/pensando/ionic.rst         |   64 +
 MAINTAINERS                                   |    8 +
 drivers/net/ethernet/Kconfig                  |    1 +
 drivers/net/ethernet/Makefile                 |    1 +
 drivers/net/ethernet/pensando/Kconfig         |   32 +
 drivers/net/ethernet/pensando/Makefile        |    6 +
 drivers/net/ethernet/pensando/ionic/Makefile  |    8 +
 drivers/net/ethernet/pensando/ionic/ionic.h   |   72 +
 .../net/ethernet/pensando/ionic/ionic_bus.h   |   16 +
 .../ethernet/pensando/ionic/ionic_bus_pci.c   |  291 ++
 .../ethernet/pensando/ionic/ionic_debugfs.c   |  279 ++
 .../ethernet/pensando/ionic/ionic_debugfs.h   |   38 +
 .../net/ethernet/pensando/ionic/ionic_dev.c   |  535 ++++
 .../net/ethernet/pensando/ionic/ionic_dev.h   |  284 ++
 .../ethernet/pensando/ionic/ionic_devlink.c   |   89 +
 .../ethernet/pensando/ionic/ionic_devlink.h   |   12 +
 .../ethernet/pensando/ionic/ionic_ethtool.c   |  796 +++++
 .../ethernet/pensando/ionic/ionic_ethtool.h   |    9 +
 .../net/ethernet/pensando/ionic/ionic_if.h    | 2552 +++++++++++++++++
 .../net/ethernet/pensando/ionic/ionic_lif.c   | 2268 +++++++++++++++
 .../net/ethernet/pensando/ionic/ionic_lif.h   |  270 ++
 .../net/ethernet/pensando/ionic/ionic_main.c  |  553 ++++
 .../net/ethernet/pensando/ionic/ionic_regs.h  |  133 +
 .../ethernet/pensando/ionic/ionic_rx_filter.c |  142 +
 .../ethernet/pensando/ionic/ionic_rx_filter.h |   34 +
 .../net/ethernet/pensando/ionic/ionic_stats.c |  333 +++
 .../net/ethernet/pensando/ionic/ionic_stats.h |   53 +
 .../net/ethernet/pensando/ionic/ionic_txrx.c  |  880 ++++++
 .../net/ethernet/pensando/ionic/ionic_txrx.h  |   15 +
 30 files changed, 9775 insertions(+)
 create mode 100644 Documentation/networking/device_drivers/pensando/ionic.rst
 create mode 100644 drivers/net/ethernet/pensando/Kconfig
 create mode 100644 drivers/net/ethernet/pensando/Makefile
 create mode 100644 drivers/net/ethernet/pensando/ionic/Makefile
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_bus.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_debugfs.c
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_debugfs.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_dev.c
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_dev.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_devlink.c
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_devlink.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_ethtool.c
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_ethtool.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_if.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_lif.c
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_lif.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_main.c
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_regs.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_rx_filter.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_stats.c
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_stats.h
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_txrx.c
 create mode 100644 drivers/net/ethernet/pensando/ionic/ionic_txrx.h