linux.git/drivers/net/phy/Kconfig, branch v5.8

net: phy: mscc: avoid skcipher API for single block AES encryption

2020-06-25T19:16:14+00:00

The skcipher API dynamically instantiates the transformation object
on request that implements the requested algorithm optimally on the
given platform. This notion of optimality only matters for cases like
bulk network or disk encryption, where performance can be a bottleneck,
or in cases where the algorithm itself is not known at compile time.

In the mscc case, we are dealing with AES encryption of a single
block, and so neither concern applies, and we are better off using
the AES library interface, which is lightweight and safe for this
kind of use.

Note that the scatterlist API does not permit references to buffers
that are located on the stack, so the existing code is incorrect in
any case, but avoiding the skcipher and scatterlist APIs entirely is
the most straight-forward approach to fixing this.

Cc: Antoine Tenart 
Cc: Andrew Lunn 
Cc: Florian Fainelli 
Cc: Heiner Kallweit 
Cc: "David S. Miller" 
Cc: Jakub Kicinski 
Fixes: 28c5107aa904e ("net: phy: mscc: macsec support")
Reviewed-by: Eric Biggers 
Signed-off-by: Ard Biesheuvel 
Tested-by: Antoine Tenart 
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

net: phy: mscc-miim: read poll when high resolution timers are disabled

2020-05-26T22:33:56+00:00

The driver uses a read polling mechanism to check the status of the MDIO
bus, to know if it is ready to accept next commands. This polling
mechanism uses usleep_delay() under the hood between reads which is fine
as long as high resolution timers are enabled. Otherwise the delays will
end up to be much longer than expected.

This patch fixes this by using udelay() under the hood when
CONFIG_HIGH_RES_TIMERS isn't enabled. This increases CPU usage.

Signed-off-by: Antoine Tenart 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: phy: mdio: add IPQ4019 MDIO driver

2020-04-30T19:11:14+00:00

This patch adds the driver for the MDIO interface
inside of Qualcomm IPQ40xx series SoC-s.

Signed-off-by: Christian Lamparter 
Signed-off-by: Robert Marko 
Reviewed-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Cc: Luka Perkov 
Signed-off-by: David S. Miller

net: phy: bcm54140: add hwmon support

2020-04-22T19:14:18+00:00

The PHY supports monitoring its die temperature as well as two analog
voltages. Add support for it.

Signed-off-by: Michael Walle 
Acked-by: Guenter Roeck 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: phy: add Broadcom BCM54140 support

2020-04-22T19:14:18+00:00

The Broadcom BCM54140 is a Quad SGMII/QSGMII Copper/Fiber Gigabit
Ethernet transceiver.

This also adds support for tunables to set and get downshift and
energy detect auto power-down.

The PHY has four ports and each port has its own PHY address.
There are per-port registers as well as global registers.
Unfortunately, the global registers can only be accessed by reading
and writing from/to the PHY address of the first port. Further,
there is no way to find out what port you actually are by just
reading the per-port registers. We therefore, have to scan the
bus on the PHY probe to determine the port and thus what address
we need to access the global registers.

Signed-off-by: Michael Walle 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: phy: add marvell usb to mdio controller

2020-03-27T02:49:34+00:00

An MDIO controller present on development boards for Marvell switches
from the Link Street (88E6xxx) family.

Using this module, you can use the following setup as a development
platform for switchdev and DSA related work.

   .-------.      .-----------------.
   |      USB----USB                |
   |  SoC  |      |  88E6390X-DB  ETH1-10
   |      ETH----ETH0               |
   '-------'      '-----------------'

Signed-off-by: Tobias Waldekranz 
Reviewed-by: Greg Kroah-Hartman 
Reviewed-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: phy: Add Synopsys DesignWare XPCS MDIO module

2020-03-10T03:13:16+00:00

Synopsys DesignWare XPCS is an MMD that can manage link status,
auto-negotiation, link training, ...

In this commit we add basic support for XPCS using USXGMII interface and
Clause 73 Auto-negotiation.

This is highly tied with PHYLINK and can't be used without it. A given
ethernet driver can use the provided callbacks to add the support for
XPCS.

Signed-off-by: Jose Abreu 
Signed-off-by: David S. Miller

net: mdio: add ipq8064 mdio driver

2020-03-07T06:07:05+00:00

Currently ipq806x soc use generic bitbang driver to
comunicate with the gmac ethernet interface.
Add a dedicated driver created by chunkeey to fix this.

Co-developed-by: Christian Lamparter 
Signed-off-by: Christian Lamparter 
Signed-off-by: Ansuel Smith 
Signed-off-by: David S. Miller

net: phy: allow bcm84881 to be a module

2020-02-17T23:08:55+00:00

Now that the phylib module loading issue has been resolved, we can
allow this PHY driver to be built as a module.

Signed-off-by: Russell King 
Acked-by: Florian Fainelli 
Signed-off-by: David S. Miller