linux-toradex.git/drivers/net/ethernet/mellanox/Kconfig, branch master

Add Mellanox BlueField Gigabit Ethernet driver

2021-06-25T18:20:23+00:00

This patch adds build and driver logic for the "mlxbf_gige"
Ethernet driver from Mellanox Technologies. The second
generation BlueField SoC from Mellanox supports an
out-of-band GigaBit Ethernet management port to the Arm
subsystem.  This driver supports TCP/IP network connectivity
for that port, and provides back-end routines to handle
basic ethtool requests.

The driver interfaces to the Gigabit Ethernet block of
BlueField SoC via MMIO accesses to registers, which contain
control information or pointers describing transmit and
receive resources.  There is a single transmit queue, and
the port supports transmit ring sizes of 4 to 256 entries.
There is a single receive queue, and the port supports
receive ring sizes of 32 to 32K entries. The transmit and
receive rings are allocated from DMA coherent memory. There
is a 16-bit producer and consumer index per ring to denote
software ownership and hardware ownership, respectively.

The main driver logic such as probe(), remove(), and netdev
ops are in "mlxbf_gige_main.c".  Logic in "mlxbf_gige_rx.c"
and "mlxbf_gige_tx.c" handles the packet processing for
receive and transmit respectively.

The logic in "mlxbf_gige_ethtool.c" supports the handling
of some basic ethtool requests: get driver info, get ring
parameters, get registers, and get statistics.

The logic in "mlxbf_gige_mdio.c" is the driver controlling
the Mellanox BlueField hardware that interacts with a PHY
device via MDIO/MDC pins.  This driver does the following:
  - At driver probe time, it configures several BlueField MDIO
    parameters such as sample rate, full drive, voltage and MDC
  - It defines functions to read and write MDIO registers and
    registers the MDIO bus.
  - It defines the phy interrupt handler reporting a
    link up/down status change
  - This driver's probe is invoked from the main driver logic
    while the phy interrupt handler is registered in ndo_open.

Driver limitations
  - Only supports 1Gbps speed
  - Only supports GMII protocol
  - Supports maximum packet size of 2KB
  - Does not support scatter-gather buffering

Testing
  - Successful build of kernel for ARM64, ARM32, X86_64
  - Tested ARM64 build on FastModels & Palladium
  - Tested ARM64 build on several Mellanox boards that are built with
    the BlueField-2 SoC.  The testing includes coverage in the areas
    of networking (e.g. ping, iperf, ifconfig, route), file transfers
    (e.g. SCP), and various ethtool options relevant to this driver.

Signed-off-by: David Thompson 
Signed-off-by: Asmaa Mnebhi 
Reviewed-by: Liming Sun 
Signed-off-by: David S. Miller

treewide: replace '---help---' in Kconfig files with 'help'

2020-06-13T16:57:21+00:00

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

Change Kconfig description

2017-08-14T18:18:16+00:00

This patch apply Mellanox network vendor which includes:
- Mellanox card devices: ConnectX-4, ConnectX-5 and Connect-IB cards.
- Mellanox switch device: SwitchX-2 Switch-IB, Spectrum.
Therefore rephrasing help.

Signed-off-by: Ohad Oz 
Acked-by: Leon Romanovsky 
Acked-by: Jiri Pirko 
Signed-off-by: David S. Miller

Allow Mellanox switch devices to be configured if only I2C bus is set

2017-08-14T18:18:16+00:00

Mellanox switches (mlxsw) supports I2C systems without PCI, in order to
give the ability to the users to use such functionality, there is need
to update Kconfig.

Signed-off-by: Ohad Oz 
Acked-by: Leon Romanovsky 
Acked-by: Jiri Pirko 
Signed-off-by: David S. Miller

Add the mlxfw module for Mellanox firmware flash process

2017-05-25T21:46:17+00:00

The mlxfw module is in charge of common logic needed to flash Mellanox
devices firmware, which consists of:
 - Parse the Mellanox Firmware Archive version 2 (MFA2) format, which is
   the format used to store the Mellanox firmware. The MFA2 format file can
   hold firmware for many different silicon variants, differentiated by a
   unique ID called PSID. In addition, the MFA2 file data section is
   compressed using xz compression to save both file-system space and
   memory at extraction time.
 - Implement the firmware flash state machine logic, which is a common
   logic for Mellanox products needed to flash the firmware to the device.

As the module is shared between different Mellanox products, it defines a
set of callbacks to be implemented by the specific driver for hardware
interaction.

Signed-off-by: Yotam Gigi 
Reviewed-by: Ido Schimmel 
Signed-off-by: Jiri Pirko 
Signed-off-by: David S. Miller

mlxsw: Introduce Mellanox switch driver core

2015-07-30T07:04:59+00:00

Add core components of Mellanox switch driver infrastructure.
Core infrastructure is designed so that it can be used by multiple
bus drivers (PCI now, I2C and SGMII are planned to be implemented
in the future). Multiple switch kind drivers can be registered as well.
This core serves as a glue between buses and drivers.

Signed-off-by: Jiri Pirko 
Signed-off-by: Ido Schimmel 
Signed-off-by: Elad Raz 
Reviewed-by: Scott Feldman 
Signed-off-by: David S. Miller

drivers/net: remove all references to obsolete Ethernet-HOWTO

2015-06-23T13:50:35+00:00

This howto made sense in the 1990s when users had to manually configure
ISA cards with jumpers or vendor utilities, but with the implementation
of PCI it became increasingly less and less relevant, to the point where
it has been well over a decade since I last updated it.  And there is
no value in anyone else taking over updating it either.

However the references to it continue to spread as boiler plate text
from one Kconfig file into the next.  We are not doing end users any
favours by pointing them at this old document, so lets kill it with
fire, once and for all, to hopefully stop any further spread.

No code is changed in this commit, just Kconfig help text.

Signed-off-by: Paul Gortmaker 
Signed-off-by: David S. Miller

mlx5: Add driver for Mellanox Connect-IB adapters

2013-07-08T17:32:24+00:00

The driver is comprised of two kernel modules: mlx5_ib and mlx5_core.
This partitioning resembles what we have for mlx4, except that mlx5_ib
is the pci device driver and not mlx5_core.

mlx5_core is essentially a library that provides general functionality
that is intended to be used by other Mellanox devices that will be
introduced in the future.  mlx5_ib has a similar role as any hardware
device under drivers/infiniband/hw.

Signed-off-by: Eli Cohen 
Signed-off-by: Jack Morgenstein 
Signed-off-by: Or Gerlitz 

[ Merge in coccinelle fixes from Fengguang Wu .
  - Roland ]

Signed-off-by: Roland Dreier

net: Remove bogus dependencies on INET

2012-11-20T00:13:59+00:00

Various drivers depend on INET because they used to select INET_LRO,
but they have all been converted to use GRO which has no such
dependency.

Signed-off-by: Ben Hutchings 
Signed-off-by: David S. Miller