[net-next,v6,0/8] add octeon_ep_vf driver

Message

Shinas Rasheed Feb. 7, 2024, 6:51 a.m. UTC

This driver implements networking functionality of Marvell's Octeon
PCI Endpoint NIC VF.

This driver support following devices:
 * Network controller: Cavium, Inc. Device b203
 * Network controller: Cavium, Inc. Device b403
 * Network controller: Cavium, Inc. Device b103
 * Network controller: Cavium, Inc. Device b903
 * Network controller: Cavium, Inc. Device ba03
 * Network controller: Cavium, Inc. Device bc03
 * Network controller: Cavium, Inc. Device bd03

Changes:
V6:
  - Removed reuse of netif_tx_stop_all_queues, called implicitly in
    netif_tx_disable, when stopping netdev
  - Corrected error jump labels to have proper action-specific names in
    probe function
  - Removed singlethreaded workqueue implementation, since only tx
    timeout task is run. Run the same in the system workqueue
  - netdev_hold when tx_timeout happens to protect against free_netdev
    if race occurs between rmmod and a tx timeout. netdev_put the
    reference when timeout task ends to progress freeing netdev
 

V5: https://lore.kernel.org/all/[e-mail]/
  - Changed unchecked return types to void and removed unnecessary
    initializations in [2/8] patch.

V4: https://lore.kernel.org/all/[e-mail]/
  - Moved some stats from ethtool and added more to ndo_get_stats64
  - Replaced code in IQ full check function to use helper from
    net/netdev_queues.h
  - Refactored code so that NETDEV_TX_BUSY is avoided

V3: https://lore.kernel.org/all/[e-mail]/
  - Removed UINT64_MAX, which is unused
  - Replaced masks and ULL declarations with GENMASK_ULL(), ULL() and
    other linux/bits.h macros, corrected declarations to conform to xmas tree format in patch [2/8]
  - Moved vfree and vzalloc null pointer casting corrections to patch
    [3/8], and corrected return values to follow standard kernel error codes in same
   - Set static budget of 64 for tx completion processing in NAPI
  - Replaces napi_complete and build_skb APIs to napi_complete_done and
    napi_build_skb APIs respectively
  - Replaced code with helper from net/netdev_queues.h to wake queues in TX completion
    processing
  - Removed duplicate reporting of TX/RX packets/bytes, which is already
    done during ndo_get_stats64

V2: https://lore.kernel.org/all/[e-mail]/
  - Removed linux/version.h header file from inclusion in
    octep_vf_main.c
  - Corrected Makefile entry to include building octep_vf_mbox.c in
    [6/8] patch.
  - Removed redundant vzalloc pointer cast and vfree pointer check in
    [6/8] patch.

V1: https://lore.kernel.org/all/[e-mail]/

Shinas Rasheed (8):
  octeon_ep_vf: Add driver framework and device initialization
  octeon_ep_vf: add hardware configuration APIs
  octeon_ep_vf: add VF-PF mailbox communication.
  octeon_ep_vf: add Tx/Rx ring resource setup and cleanup
  octeon_ep_vf: add support for ndo ops
  octeon_ep_vf: add Tx/Rx processing and interrupt support
  octeon_ep_vf: add ethtool support
  octeon_ep_vf: update MAINTAINERS

 .../device_drivers/ethernet/index.rst         |    1 +
 .../ethernet/marvell/octeon_ep_vf.rst         |   24 +
 MAINTAINERS                                   |    9 +
 drivers/net/ethernet/marvell/Kconfig          |    1 +
 drivers/net/ethernet/marvell/Makefile         |    1 +
 .../net/ethernet/marvell/octeon_ep_vf/Kconfig |   19 +
 .../ethernet/marvell/octeon_ep_vf/Makefile    |   10 +
 .../marvell/octeon_ep_vf/octep_vf_cn9k.c      |  491 +++++++
 .../marvell/octeon_ep_vf/octep_vf_cnxk.c      |  502 +++++++
 .../marvell/octeon_ep_vf/octep_vf_config.h    |  160 +++
 .../marvell/octeon_ep_vf/octep_vf_ethtool.c   |  273 ++++
 .../marvell/octeon_ep_vf/octep_vf_main.c      | 1228 +++++++++++++++++
 .../marvell/octeon_ep_vf/octep_vf_main.h      |  334 +++++
 .../marvell/octeon_ep_vf/octep_vf_mbox.c      |  430 ++++++
 .../marvell/octeon_ep_vf/octep_vf_mbox.h      |  166 +++
 .../marvell/octeon_ep_vf/octep_vf_regs_cn9k.h |  154 +++
 .../marvell/octeon_ep_vf/octep_vf_regs_cnxk.h |  162 +++
 .../marvell/octeon_ep_vf/octep_vf_rx.c        |  510 +++++++
 .../marvell/octeon_ep_vf/octep_vf_rx.h        |  224 +++
 .../marvell/octeon_ep_vf/octep_vf_tx.c        |  330 +++++
 .../marvell/octeon_ep_vf/octep_vf_tx.h        |  276 ++++
 21 files changed, 5305 insertions(+)
 create mode 100644 Documentation/networking/device_drivers/ethernet/marvell/octeon_ep_vf.rst
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/Kconfig
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/Makefile
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_cn9k.c
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_cnxk.c
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_config.h
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_ethtool.c
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.c
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_main.h
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_mbox.c
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_mbox.h
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_regs_cn9k.h
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_regs_cnxk.h
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_rx.c
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_rx.h
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_tx.c
 create mode 100644 drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_tx.h